EP2110610A2 - Dispositif de déshumidificateur de hotte de cuisine - Google Patents

Dispositif de déshumidificateur de hotte de cuisine Download PDF

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Publication number
EP2110610A2
EP2110610A2 EP20090004562 EP09004562A EP2110610A2 EP 2110610 A2 EP2110610 A2 EP 2110610A2 EP 20090004562 EP20090004562 EP 20090004562 EP 09004562 A EP09004562 A EP 09004562A EP 2110610 A2 EP2110610 A2 EP 2110610A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
internal
internal heat
afterheater
gas mixture
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Withdrawn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
EP20090004562
Other languages
German (de)
English (en)
Inventor
Oreste Bottaro
Mario Cipriani
Perry King
Santiago Miranda
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.)
Faber SpA
Original Assignee
Faber SpA
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 Faber SpA filed Critical Faber SpA
Publication of EP2110610A2 publication Critical patent/EP2110610A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the present invention relates to a kitchen hood with dehumidifier device in accordance with the introduction to the main claim.
  • the object of the present invention is therefore to provide a kitchen hood comprising a dehumidifier device in which a fluid is made to undergo a thermodynamic cycle such that by changing its state by evaporation it absorbs heat from a hot moist gas mixture at a determined temperature, and yields heat, again mainly by changing its state by condensation at higher temperatures, to the at least partially dehumidified gas mixture such as to heat it.
  • this shows a kitchen hood 1 with a housing 2 which comprises an internal heat exchanger 3 connected by a conduit 14 to compression means 6.
  • these compression means 6 are positioned outside the housing 2.
  • the compression means 6 are then connected by a further conduit 15 to the afterheater heat exchanger 5 which is connected to a throttling device 8, itself connected to the internal heat exchanger 3 such as to close the thermodynamic circuit of the invention.
  • stop valve means 10 are provided, preferably represented by a two-way solenoid valve, to enable or not enable a vector fluid to pass between the heat exchangers 3, 5.
  • a conventional vector fluid flows through the heat exchangers 3, 5, through the throttling device 8 and through the compression means 6 to perform a thermodynamic cycle with saturated vapour compression in the manner described hereinafter.
  • An internal fan 9 is positioned in proximity to the afterheater heat exchanger 5.
  • the internal fan 9 is positioned above the afterheater heat exchanger 5.
  • this internal fan is different from that conventionally provided in kitchen hoods.
  • this conventional suction fan is indicated in the figure by the reference numeral 20.
  • the afterheater heat exchanger 5 is positioned above the internal heat exchanger 3 such that the internal fan 9 can convey a gas mixture 4 drawn from the environment containing the hood 1, namely the internal environment, firstly through the internal heat exchanger 3 and then, after being processed, through the afterheater heat exchanger 5.
  • a gas mixture means a mixture comprising air and possibly other gases, suspended aerosols, oily substances and water vapour.
  • first apertures 12 are provided to convey the gas mixture 4 to the internal heat exchanger 3, and second apertures 13 to expel to the internal environment the gas mixture 13a which has passed through the afterheater heat exchanger 5.
  • the housing 2 is provided with third apertures 21 to convey a gas mixture originating from the cooking hobs to the external environment via fourth apertures 22 provided in the housing 2.
  • At least one internal baffle 23 is provided to maintain the gas flow entering through the apertures 21 and leaving from the apertures 22 separate from the gas flow entering through the apertures 12 and leaving from the apertures 13.
  • the hood 1 of the invention comprises only one fan both for expelling and for treating the gas mixtures.
  • a double suction centrifugal fan arranged transversely to the housing 2 can be used.
  • the rear part of the fan is used for treating the gas mixture originating from the cooking hobs while the front part is used for the gas mixture originating from the internal environment.
  • the flow thus generated is divided into two by a separator baffle which extends into the fan volute. The first gas flow is expelled through the apertures 22 while the second gas flow is expelled through the apertures 13.
  • one or more filtration devices are provided in proximity to the apertures 12, 13.
  • condensate collection means are provided below the internal heat exchanger 3.
  • the internal heat exchanger 3, the compression means 6 and the internal fan 9 can be combined into a conditioning/heat pump device of known type comprising an inner unit to be positioned inside the environment to be conditioned and an outer unit 16; in particular, the internal heat exchanger 3 and the fan 9 in the inner unit of the conditioning device are as used conventionally in the inner unit of a conditioning device, while the compression means 6 are the compressor provided in the outer unit 16.
  • the external heat exchanger 11 is connected to the internal heat exchanger 3 by a further throttling device 19.
  • the external heat exchanger 11 is connected to the compression means 6 such that with the aid of a further external fan 17, it can operate as a conventional air conditioner or heat pump when the stop valve means 10 are closed.
  • blocking valve means 18, preferably represented by a two-way solenoid valve, are provided between the external heat exchanger 11 and the further throttling device 19.
  • the external heat exchanger 11, the further throttling device 19, the compression means 6 and the further external fan 17 are conventionally combined into an outer unit 16 of a conditioning device.
  • one or more conduits must be provided to connect the external heat exchanger 11 to the external environment.
  • the gas mixture 4 originating from the internal environment at a first temperature and with a first degree of humidity is passed through the internal heat exchanger 3. Said mixture transfers a first heat quantity to the vector fluid which flows through this internal heat exchanger 3.
  • the gas mixture 7 cools and on reaching the dew point causes the water vapour contained in it to condense.
  • the vector fluid heats up and evaporates to become saturated vapour.
  • the vector fluid in the saturated vapour state is fed to the compression device 6 for the saturated vector fluid vapours, where it is compressed and heated.
  • This superheated saturated vapour is then fed to the afterheater heat exchanger 5.
  • the gas mixture 7 originating from the internal heat exchanger 3 at a second temperature less than the first and with a degree of humidity less than the first degree of humidity is forced through the afterheater heat exchanger 5 where it acquires a heat quantity from the vector fluid.
  • the temperature of the gas flow 13a leaving the hood 1 returns to values close to that of the gas flow 4 from the internal environment.
  • the vector fluid in the superheated saturated vapour state after being cooled and condensed, is fed to the throttling device 8 to undergo temperature and pressure reduction before being returned to the internal heat exchanger 3 to recommence the thermodynamic cycle.
  • the steam condensate from the gas mixture 4 is collected in collection means provided below the heat exchanger 3.
  • the hood of the invention also comprises the throttling device 19 and the external heat exchanger 11, in this method of operation the blocking valve means 18 are closed, while the stop valve means 10 are open.
  • the hood 1 of the invention can reuse the heat extracted from the gas mixture 4 present in the internal environment during dehumidification, to then heat it before its entry into the environment, and hence to implement a process of just dehumidification without changing the ambient temperature.
  • thermodynamic saturated vapour cycle also known as a heat pump.
  • the hood 1 of the invention can operate as a conventional conditioning device or heat pump, by using the internal heat exchanger 3 and the fan 9 for cooling and dehumidifying the air in summer or heating it in winter, while the further throttling device 19, the compression means 6, a further external fan 17 and the external heat exchanger 11 act as a conventional outer unit 16 of the conditioning device or heat pump.
  • valve means are connected to a control unit which enables their opening or closure on the basis of the operating modality required by the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Gases (AREA)
  • Drying Of Solid Materials (AREA)
EP20090004562 2008-04-14 2009-03-30 Dispositif de déshumidificateur de hotte de cuisine Withdrawn EP2110610A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20080662 ITMI20080662A1 (it) 2008-04-14 2008-04-14 Cappa da cucina con dispositivo deumidificatore

Publications (1)

Publication Number Publication Date
EP2110610A2 true EP2110610A2 (fr) 2009-10-21

Family

ID=40296921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090004562 Withdrawn EP2110610A2 (fr) 2008-04-14 2009-03-30 Dispositif de déshumidificateur de hotte de cuisine

Country Status (2)

Country Link
EP (1) EP2110610A2 (fr)
IT (1) ITMI20080662A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20120110A1 (it) * 2012-08-24 2014-02-25 Energy Resources S P A Unipersonal E Cappa da cucina innovativa avente funzione di climatizzazione invernale ed estiva ad alta efficienza energetica e metodo per la riduzione dei consumi energetici e per il miglioramento della qualità dell¿aria dell¿ambiente interno

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20120110A1 (it) * 2012-08-24 2014-02-25 Energy Resources S P A Unipersonal E Cappa da cucina innovativa avente funzione di climatizzazione invernale ed estiva ad alta efficienza energetica e metodo per la riduzione dei consumi energetici e per il miglioramento della qualità dell¿aria dell¿ambiente interno

Also Published As

Publication number Publication date
ITMI20080662A1 (it) 2009-10-15

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