EP2033545A2 - Procédé et dispositif destinés à la climatisation d'une vitrine - Google Patents

Procédé et dispositif destinés à la climatisation d'une vitrine Download PDF

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Publication number
EP2033545A2
EP2033545A2 EP08105033A EP08105033A EP2033545A2 EP 2033545 A2 EP2033545 A2 EP 2033545A2 EP 08105033 A EP08105033 A EP 08105033A EP 08105033 A EP08105033 A EP 08105033A EP 2033545 A2 EP2033545 A2 EP 2033545A2
Authority
EP
European Patent Office
Prior art keywords
air
showcase
temperature
air flow
interior
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.)
Granted
Application number
EP08105033A
Other languages
German (de)
English (en)
Other versions
EP2033545A3 (fr
EP2033545B1 (fr
Inventor
Detlef Makulla
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.)
Yit Germany GmbH
Original Assignee
Yit Germany GmbH
Caverion 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 Yit Germany GmbH, Caverion GmbH filed Critical Yit Germany GmbH
Publication of EP2033545A2 publication Critical patent/EP2033545A2/fr
Publication of EP2033545A3 publication Critical patent/EP2033545A3/fr
Application granted granted Critical
Publication of EP2033545B1 publication Critical patent/EP2033545B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47F3/001—Devices for lighting, humidifying, heating, ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect

Definitions

  • the invention relates to a method for air conditioning a display case for the accommodation of objects that make high demands on the constancy of the air temperature, wherein air from an interior of the showcase led out as air flow, tempered by an air treatment unit with a temperature-regulating material, in particular a phase change material, in particular cooled, and then returned to the interior of the showcase.
  • the invention relates to an apparatus for carrying out the method described above.
  • a showcase is to be understood as a space bounded by glass panes or transparent plastic panes and by a floor or cover part of another material for storing and displaying objects, in particular in museums.
  • the exhibits accommodated in such showcases typically place very high demands on the constancy of the temperature in the interior of the showcase.
  • the air temperature can be controlled.
  • the air temperature can be obtained by arrangement of a P hase C hange M aterials are buffered in particular at a temperature rise (PCM), that is, passes in the course of temperature rise the PCM undergoes a phase change whereby the heat accumulated in the display cabinet is stored in the PCM and the interior of the showcase is cooled.
  • PCM temperature rise
  • the performance of passive methods for air conditioning showcases is limited because only with the use of PCM only small temperature fluctuations can be compensated because the regeneration of the PCM is possible only by means of air with the ambient temperature.
  • this is the DE 10 2006 022 296 A1 also called a showcase for housing objects with high demands on the constancy of air temperature.
  • Air taken out of the interior of the showcase is tempered via an air treatment unit or regulated with respect to its moisture properties and returned to the interior of the showcase.
  • a showcase with climate control system which consists of a lower part and an exhibition chamber.
  • the display chamber is connected to a hermetically sealed air circulation system having an air outlet for removing air from the display chamber and an air inlet for supplying air into the display chamber.
  • an electrically operated conditioning device is connected, which has means for heating or cooling the air or humidifying or dehumidifying it.
  • a drawer arranged with hygroscopic material as silica gel or saline solution is filled and which is in atmospheric contact with the exhibition chamber.
  • Object of the present invention is to provide a decentralized method for air conditioning a display case, which is characterized by an optimized noise behavior and ensures a minimum heat load on the ambient air. It is another object of the present invention to provide an apparatus for carrying out this method.
  • this object is achieved in that the air flow is first passed over a heat exchanger surface of a Peltier element and then fed to the air treatment unit.
  • the advantage of this method is the flexibility with regard to various temperature conditions present in the showcase.
  • the material properties of the PCM are chosen so that the melting point, ie the point of the phase transition, is in the range of the target temperature in the showcase. If there is a deviation of the existing temperature from the setpoint temperature in the showcase, the deviating air temperature of the airflow causes a phase change in the PCM. In the event that the existing temperature in the showcase is higher than the setpoint temperature, the PCM undergoes a phase change from solid to liquid so that heat energy is stored in the PCM and a cooling effect is achieved. On the other hand, the PCM goes through a phase change from liquid to solid, if the existing temperature in the showcase is below the target temperature, since the PCM stored heat energy is withdrawn. This creates a warming effect for the interior of the showcase.
  • the tempering of the interior climate of the showcase can take place with increased performance by simple activation of the Peltier element, which is then used to support the cooling effect.
  • the air flow is tempered during a first period by means of the air treatment unit with temperature-regulating material and the air flow is first tempered by means of the Peltier element during a later second period before passing through the air treatment unit with temperaturregulierendem Material is passed, which takes place in the second period in the temperature-regulating material by the tempered air flow, a phase change.
  • the PCM is used to control the temperature of the showcase, whereby it is gradually subjected to a phase change (loading process). If the entire PCM has a phase change dur h-run, it can not be used for air conditioning of the air flow and the use of the Peltier element is required. Since the temperature control of the air flow by means of Peltier element in front of the PCM, already tempered, for example, cooled air reaches the PCM, which in turn is regenerated e-riert, that is undergoes a u mended phase change. In addition to the actual function of the Peltier element, to cool the air flow, it therefore also fulfills the task of converting the PCM back into a state in which it can in turn be used for temperature control (discharge process).
  • the proposed method for example, it is possible to make the cooling of a showcase during the day using PCM, which is regenerated at night by active cooling via a Peltier element and thus during the day is again able to absorb heat due to a renewed phase change from solid to liquid.
  • PCM makes it possible to shift the operation of active cooling into the night, so that the acoustic problem of the Peltier element during the day and therefore costly soundproofing measures can be eliminated.
  • the heat output of the Peltier element is shifted to the night hours, whereby an additional temperature load of the museum does not occur during the day.
  • the air flow through the Peltier element is cooled to a temperature which is below the phase change temperature of the temperature-regulating material by a specific temperature difference.
  • a specific temperature difference may usefully be between 5 ° C and 10 ° C, if necessary also between 10 ° C and 20 ° C.
  • the humidity of the air stream is regulated according to an embodiment of the method by means of a unit with moisture-regulating material.
  • showcases are produced for the display of exhibits with a relatively high density, nevertheless there is a certain exchange of air with the environment, which can cause fluctuations in the humidity. These are then balanced by means of the moisture-regulating material.
  • the air flow is purified after exiting the interior of the showcase and before entering the interior of the showcase in each case by means of a filter, in particular a HEPA filter.
  • the filter device prevents particles that might get into the air stream in the course of the air treatment from being transported into the showcase and possibly causing damage or spoiling the exhibit by depositing it.
  • the moisture-regulating material may in particular be formed by silicate gel and / or a salt solution.
  • the interior of the showcase can be connected via a closed air flow circuit with the air conditioning module, which is particularly advantageous in terms of a constant humidity.
  • embodiments of the device may be preferred in which means for interrupting the air flow circuit are present.
  • a unit with moisture-regulating material and filters preferably HEPA filter.
  • FIG. 1 is a schematic representation of a display case 1 is shown, which has a limited by glass panes finished display part 2, which is provided with a lighting 3. Below the exhibition part 2 provided with a bottom 4, an air-conditioning module 5 is arranged, which is also indicated only schematically in the drawing figure.
  • the air conditioning module 5 has an air conveyor 6 in the form of a fan 7, which is operated by an electric motor, not shown.
  • the fan 7 withdraws from the interior 8 of the display part 2 by means of a suction line 10 which is in communication therewith (via an outlet cross-section 9) and is initially cleaned by a filter 12.
  • a pressure line 13 From the pressure side of the fan 7 is a pressure line 13, which leads to an electrically driven Peltier element 14, wherein the air flow 11 is passed so that it passes through a cold part 15 of the Peltier element 14.
  • the air stream 11 emerging from the Peltier element 14 is conducted via an air treatment unit 16, in which a temperature-regulating material, namely a phase change material (PCM), is arranged.
  • a temperature-regulating material namely a phase change material (PCM)
  • the pressure line 13 continues via a second filter 17 to open through an outlet cross section 18 in the interior 8 of the display part 2. This creates a closed air flow circuit.
  • the resulting on a warm side 19 of the Peltier element 14 heat is dissipated by means of an independent air flow 20 via a further fan 21 to the ambient air and does not enter the closed air flow circuit of the air conditioning module 5.
  • the Peltier element 14 requires an electric power supply to function which is not shown in the figure.
  • a unit with moisture-regulating material can also be arranged in the closed airflow circuit Be able to compensate for any resulting moisture fluctuations in the display part 2.
  • a first operating state which is typically taken during the day, is characterized in that the Peltier element 14 is not active, that is, that the air flow 11 is guided only by the non-operating (passive) Peltier element 14. Accordingly, the heated part of the exhibition part 2 is withdrawn air, which penetrates virtually uncooled to the PCM.
  • the material parameters of the temperature-regulating material for example paraffin or salt hydrate
  • the heated air which is above the phase change temperature of the PCM, an energy input into the temperature-regulating material, which is thereby melted, so undergoes a phase change.
  • a cooling of the air flow 11 is achieved, which in turn is used for air conditioning of the display part 2 by this the cooled air is supplied.
  • the Peltier element 14 In a second, typically occupied at night operating state, the Peltier element 14 is active and is used to cool the air flow 11. Accordingly, already cooled air passes to the air treatment unit 16, where it causes a reconsolidation, ie a regeneration of the PCM due to a suitable selection of the PCM phase change temperature.
  • the reconsolidated PCM thus again has sufficient storage capacity to absorb heat and can in turn be used to air-condition display case 1 the next day.
  • PCM can be cooled well below the required phase change temperature, thus building up an additional proportion of sensitive cooling capacity in addition to the latent one.
  • the device according to the invention is characterized by the possibility of adapting the temperature of the display case 1 in a simple manner to the climatic conditions in the display part 2 while using the active component only minimally. If there are only slight deviations between the existing temperature and the setpoint temperature in the showcase 1, the temperature control is achieved solely by the PCM. If necessary, a regeneration of the PCM by briefly switching on the Peltier element 14 take place, which causes active cooling of the air flow 11, which causes a reverse phase change from liquid to solid when passing the PCM. Thus, the PCM is then again in a state in which it can be used again for cooling the air flow 11.
  • the device according to the invention it is possible to make the cooling of a showcase 1 over the day only with the help of the PCM, so that there is no noise pollution during museum operation, nor an additional temperature load of the museum rooms arises.
  • An active cooling which is also used for the regeneration of the PCM, takes place only at night, so that both the resulting noise and the heat generated during operation of the Peltier element 14 is not a disturbance for the museum operation. Elaborate soundproofing measures on the display case 1 can thus be dispensed with.
  • the in the FIG. 2 showcase 1 differs from that in the FIG. 1 shown showcase 1 only in the arrangement of two flaps 22, 23 in the intake manifold 10 and also two flaps 24, 25 in the pressure line 13, wherein the flaps 22, 23 of the suction pipe 10 between the display case 1 and the filter 12 are arranged and the Flaps 24, 25 of the pressure line 13 between the air treatment unit 16 and the second filter 17th
  • the operation of the air-conditioning module differs 5 according to the FIG. 2 not from that of the air conditioning module 5 according to FIG. 1.
  • the air flow 11 is conditioned in a closed air flow circuit.
  • the air conditioning module it is possible to completely close the interior of the display part 2 by locking the shutters 22 and 25 so that air circulation in the region of the display part 2 is prevented.
  • the flaps 23 and 24 can be opened, whereby air is sucked from the environment of the display case 1, which in turn is used for regeneration of the PCM in the Lucasb e-treatment unit 16.
  • fluctuations in the air temperature behind the air treatment unit 16 which may arise through the regeneration cycle of the PCM, can not affect the display part 2 of the display case 1 or the Ausste I-pieces in it. Since the external temperature load of the display part 2 as a result of lighting 3 or people at night is almost zero and the display part then requires no air conditioning for a certain time, the aforementioned type of air conditioning is particularly suitable for a regeneration of the PCM at night.

Landscapes

  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP08105033A 2007-09-06 2008-08-13 Procédé et dispositif destinés à la climatisation d'une vitrine Not-in-force EP2033545B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007042240A DE102007042240B3 (de) 2007-09-06 2007-09-06 Verfahren und Vorrichtung zur Klimatisierung einer Vitrine

Publications (3)

Publication Number Publication Date
EP2033545A2 true EP2033545A2 (fr) 2009-03-11
EP2033545A3 EP2033545A3 (fr) 2011-01-05
EP2033545B1 EP2033545B1 (fr) 2011-12-21

Family

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Application Number Title Priority Date Filing Date
EP08105033A Not-in-force EP2033545B1 (fr) 2007-09-06 2008-08-13 Procédé et dispositif destinés à la climatisation d'une vitrine

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EP (1) EP2033545B1 (fr)
AT (1) ATE537735T1 (fr)
DE (1) DE102007042240B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111207479A (zh) * 2020-03-02 2020-05-29 何丰瀚 一种热再生的壁挂式空气净化器及其实现方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101802A1 (it) * 2010-10-01 2012-04-02 Goppion Spa Contenitore a tenuta d'aria per la conservazione di oggetti delicati.
DE202011051718U1 (de) * 2011-10-21 2013-01-25 Glasbau Hahn Gmbh Vitrine zur Zurschaustellung von Gegenständen
CN111102667B (zh) * 2020-03-02 2021-07-16 何丰瀚 一种空气净化器及其实现方法
CN112815590B (zh) * 2021-01-05 2022-02-22 西安交通大学 一种微重力下的水基相变蓄冷装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69903657T2 (de) 1998-05-14 2003-07-31 Consejo Superior De Investigaciones Cientificas, Madrid Den peltiereffekt verwendender haushaltkühlschrank mit wärmespeichern und thermosiphons mit verdampfung
DE60122133T2 (de) 2000-05-09 2007-03-08 Goppion S.P.A. Klimaregelungssystem für einen schaukasten
DE102006022296A1 (de) 2006-05-11 2007-11-15 M+W Zander Gebäudetechnik GmbH Vitrine zur Unterbringung von Gegenständen

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Publication number Priority date Publication date Assignee Title
DE19700621A1 (de) * 1997-01-10 1998-07-16 Klaus Haendel Kühlvitrine mit Luftumwälzung
FR2778733B1 (fr) * 1998-05-12 2000-08-18 Austria Haus Technik Aktienges Etageres-echangeurs pour meuble frigorifique de vente et meuble frigorifique realise au moyen de telles etageres
GB0020171D0 (en) * 2000-08-17 2000-10-04 Univ South Bank Cooling method
DE10128348B4 (de) * 2001-06-13 2006-12-07 Glasbau Hahn Gmbh + Co Kg Verfahren zur Klimatisierung einer Vitrine und Vorrichtung zur Durchführung des Verfahrens
DE10240281A1 (de) * 2002-08-31 2004-03-18 Entrak Energie- Und Antriebstechnik Gmbh & Co. Kg Tragbares Klimatisierungsgerät, insbesondere Personenklimagerät
DE202006010757U1 (de) * 2006-07-11 2006-11-02 Sgl Carbon Ag Kühlvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69903657T2 (de) 1998-05-14 2003-07-31 Consejo Superior De Investigaciones Cientificas, Madrid Den peltiereffekt verwendender haushaltkühlschrank mit wärmespeichern und thermosiphons mit verdampfung
DE60122133T2 (de) 2000-05-09 2007-03-08 Goppion S.P.A. Klimaregelungssystem für einen schaukasten
DE102006022296A1 (de) 2006-05-11 2007-11-15 M+W Zander Gebäudetechnik GmbH Vitrine zur Unterbringung von Gegenständen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111207479A (zh) * 2020-03-02 2020-05-29 何丰瀚 一种热再生的壁挂式空气净化器及其实现方法
CN111207479B (zh) * 2020-03-02 2021-07-16 何丰瀚 一种热再生的壁挂式空气净化器及其实现方法

Also Published As

Publication number Publication date
DE102007042240B3 (de) 2009-02-05
EP2033545A3 (fr) 2011-01-05
EP2033545B1 (fr) 2011-12-21
ATE537735T1 (de) 2012-01-15

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