EP3084065B1 - Appliance having a heat pump for treating articles - Google Patents

Appliance having a heat pump for treating articles Download PDF

Info

Publication number
EP3084065B1
EP3084065B1 EP13811965.6A EP13811965A EP3084065B1 EP 3084065 B1 EP3084065 B1 EP 3084065B1 EP 13811965 A EP13811965 A EP 13811965A EP 3084065 B1 EP3084065 B1 EP 3084065B1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
temperature
heat exchanger
medium
appliance
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.)
Not-in-force
Application number
EP13811965.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3084065A1 (en
Inventor
Filippo BELLOMARE
Alessandro DALLA ROSA
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to PL13811965.6T priority Critical patent/PL3084065T3/pl
Publication of EP3084065A1 publication Critical patent/EP3084065A1/en
Application granted granted Critical
Publication of EP3084065B1 publication Critical patent/EP3084065B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the present invention relates to a laundry or tableware treatment appliance, like laundry washers, laundry washers/dryers, dishwashers.
  • Appliances for drying laundry like laundry dryers (tumble dryers) and laundry washers/dryers, generally comprise a drying chamber for accommodating therein the laundry to be dried.
  • a heated and dehumidified drying medium typically air
  • the heated and dehumidified drying medium takes up humidity and at the same time cools down.
  • the drying medium then exits the drying chamber, thereby discharging humidity from the drying chamber and the laundry.
  • the drying medium is cooled down and dehumidified and then heated up in the heat pump system and finally reinserted again into the drying chamber.
  • the heat pump system typically comprises a refrigerant flowing in a closed-loop refrigerant circuit constituted by a first heat exchanger, a compressor, a second heat exchanger and an expansion device.
  • the first heat exchanger cools and dehumidifies the drying medium leaving the drying chamber while the second heat exchanger heats up the drying medium.
  • the refrigerant flows in the refrigerant circuit where it is compressed by the compressor and expanded in the expansion device.
  • the second heat exchanger which is arranged immediately downstream of the compressor is subjected therefore to higher pressure levels with respect to the first heat exchanger which is arranged immediately downstream of the expansion device.
  • the temperatures of the drying medium and the refrigerant are strongly correlated to each other.
  • halogenated refrigerants like halogenated refrigerants, such as HydroChloroFluoroCarbons (HCFC) and HydroFluoroCarbons (HFC) (like R134a and R407C), are known to cause damages to the environment, inter alia by their ozone-destroying properties and most of all by their high Global Warming Potential (GWP), which is the measure of how much a given mass of greenhouse gas is estimated to contribute to global warming.
  • GWP Global Warming Potential
  • HFOs HydroFluoroHolefins
  • said synthetic fluids are still partially toxic and still have an impact on the environment, in particular in terms of recycling process.
  • CO 2 carbon dioxide
  • GWP GWP
  • a first drawback of appliances with heat pump systems using carbon dioxide (CO 2 ) as refrigerant is linked to the high critical pressure (73,773 bar) and the low critical temperature (30,978 °C) of such refrigerant, in particular when the heat pump system is used in laundry dryers.
  • CO 2 carbon dioxide
  • the drying medium (drying air) which leaves the second heat exchanger and enters the drying chamber is heated up to a temperature about 60°C, i.e. quite higher than the critical temperature of the refrigerant (30,978 °C).
  • the refrigerant in the second heat exchanger is in a supercritical state, i.e. with temperature and pressure above the respective critical temperature (30,978 °C) and pressure (73,773 bar).
  • the heat pump in particular the second heat exchanger, is therefore affected by high pressure levels and the components of the heat pump itself must be opportunely designed to support high pressure levels, thus requiring expensive components.
  • Heat pump system working with high pressure levels and pressure above the critical pressure typically requires a back pressure valve arranged downstream of the second heat exchanger which controls the pressure of the refrigerant in order to maintain it within a safety range.
  • a heat pump system where the refrigerant is in a supercritical state at least in the second heat exchanger, i.e. with pressure levels above the critical pressure, shows a low efficiency.
  • EP2053159 discloses the use of propane (R290) as refrigerant.
  • Propane can be considered an alternative to halogenated refrigerants, thanks to its low environmental impact in terms of GWP. Nevertheless, a main drawback of propane is its high flammability and the system requires dedicated protection against fire hazard.
  • EP 2 674 525 A1 discloses a laundry dryer with a heat pump system using different mixtures of refrigerants for forming the used refrigerant blend - for example a blend comprising Carbon Dioxide (CO 2 ) and Hydrocarbons (HCs).
  • the refrigerant fluid comprises particles having a size of less than 10 micron.
  • RU 2 220 383 C1 discloses a cascaded refrigeration system for refrigeration plants to generate low temperatures at different temperature levels.
  • a refrigeration blend comprising only CO 2 and Propane is used. The density and high molecular weight of Isobutane relative to CO 2 adversely affects the value of the thermodynamic losses in the compressor and heat exchangers.
  • ANONYMOUS "Hydrocarbon refrigerant R441 a gets first roll out in the USA", INTERNET CITATION, 23 March 2011 (2011-03-23), pages 1-2, XP002695016, Retrieved from the Internet: URL: http://www.acr-news.com/hydrocarbon-refrigerant-r441a-gets-first-roll-out-in-the-usa [retrieved on 2013-04-09 ] relates to refrigeration and air conditioning, in particular to domestic household refrigerators, freezers and window air-conditioners, wherein refrigeration blend R441a is used to replace hydrofluorocarbon (HFC) R-134.
  • HFC hydrofluorocarbon
  • WO 2008/105233 A1 discloses a dryer with a refrigerant leakage detection means for detecting a leakage of a refrigerant, e.g. CO 2 , from a refrigerant circuit of the dryer.
  • a refrigerant leakage detection means detects a leakage of refrigerant from the refrigerant circuit
  • the door lock device locks the door.
  • WO 2011/144885 A1 discloses refrigerant blends comprising trans -1, 3,3,3-tetrafluoropropene (R-1234Ze(E)), carbon dioxide (R-744) and a third component selected from difluoromethane (R-32), 1,1-difluoroethane (R-152a), fluoroethane (R- 161 ), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof.
  • EP 2 412 868 A1 discloses a heat pump dryer, which is operable with superheating the refrigerant to between 6°C and 22°C.
  • refrigerant R 290 Propane
  • R134a, R152a, R407C, R410A, and R744 Carbon dioxide
  • R 290 Process
  • R134a, R152a, R407C, R410A, and R744 Carbon dioxide
  • an energy-efficient refrigerant with low environmental impact and that can be expediently used, being particularly efficient due to its thermodynamical properties, in heat-pump article treatment appliances, particularly appliances for treating laundry or tableware, is a fluid which is a blend comprising carbon dioxide and at least one hydrocarbon.
  • the present invention relates, therefore, to an articles treatment appliance, in particular for treating laundry or tableware, having a heat pump system, the heat pump system having a refrigerant loop, the appliance comprising:
  • the refrigerant is a blend that allows obtaining a subcritical thermodynamic cycle.
  • the temperature of the refrigerant during the isobaric condensation phase in the second heat exchanger is lower than the critical temperature of the refrigerant.
  • the percentage in weight of said carbon dioxide in the refrigerant is comprised between 10% and 70%, preferably comprised between 20% and 60%, preferably comprised between 20% and 40%, preferably comprised between 25% and 35% and more preferably equal to 30%.
  • the refrigerant is a blend comprising carbon dioxide and R441a.
  • the difference between the critical temperature of the refrigerant and the temperature of the medium at the second heat exchanger outlet is comprised between +40°C and -40°C, preferably between +30°C and -30°C, more preferably between +20°C and -20°C.
  • the critical temperature of the refrigerant is equal or higher than the temperature of the medium at the second heat exchanger outlet.
  • the difference between the critical temperature of the refrigerant and the temperature of the medium at the second heat exchanger outlet is comprised between +40°C and 0°C, preferably between +30°C and 10°C, preferably between +25°C and 15°C, more preferably equal to 20°C.
  • the critical temperature of the refrigerant is lower than the temperature of the medium at the second heat exchanger outlet.
  • the critical temperature of the refrigerant is comprised between 100°C and 34°C, preferably between 90°C and 40°C, preferably between 80°C and 60°C, preferably between 75°C and 65°C more preferably equal to 70°C.
  • the percentage in weight of the carbon dioxide in the refrigerant is comprised between 25% and 35% , the difference between the critical temperature of the refrigerant and the temperature of the medium at the second heat exchanger outlet is between +25°C and 15°C and the critical temperature of the refrigerant is between 75°C and 65°C.
  • the percentage in weight of the carbon dioxide in the refrigerant is substantially equal to 30%
  • the difference between the critical temperature of the refrigerant and the temperature of the medium at the second heat exchanger outlet is substantially equal to +20°C
  • the critical temperature of the refrigerant is substantially equal to 70°C.
  • the temperature of the refrigerant decreases from a higher temperature (dew temperature) to a lower temperature (bubble temperature).
  • the temperature of the refrigerant increases from a lower temperature to a higher temperature (dew temperature).
  • the first heat exchanger is adapted for cooling the medium.
  • the appliance is a laundry dryer.
  • the nominal first heat exchanger inlet temperature of the medium is about 40° C at the least.
  • the nominal first heat exchanger inlet temperature of the medium is comprised between 100 °C and 50°C, preferably between 70°C and 50°C, preferably between 60°C and 50°C, preferably between 60°C and 55°C, more preferably equal to 58°C.
  • a nominal second heat exchanger outlet temperature of the medium is 100 °C at the most.
  • the nominal second heat exchanger outlet temperature of the medium is comprised between 100 °C and 50°C, preferably between 70°C and 50°C, preferably between 60°C and 55°C, more preferably equal to 58°C.
  • the appliance comprises a closed-loop circuit wherein the medium circulates.
  • the medium comprises washing water for washing the articles.
  • the medium comprises drying air for drying said articles.
  • the appliance comprises a carbon dioxide detector.
  • the leakage of the refrigerant may be detected.
  • FIG. 1 schematically shows a heat pump laundry dryer 1 according to an embodiment of the present invention. It is pointed out that although in the following description a heat pump laundry dryer is considered, this choice is merely exemplary, because the present invention applies generally to any appliance for treating articles, in particular for treating laundry or tableware, like laundry washers, laundry washers/dryers, laundry dryers, dishwashers equipped with a heat pump in heat-exchange relationship with an article treatment medium that can be a washing medium or a drying medium.
  • the heat pump laundry dryer 1 comprises a drying chamber 2, preferably a rotatable drum.
  • the drying drum 2 accommodates wet laundry 3 to be dried.
  • a drying medium 4 such as air, in particular comprising ambient air, is circulated through the drying drum 2 via a drying medium circuit, which preferably forms a closed-loop circuit.
  • the drying medium 4 heated to a temperature of 100°C at the most and thereby having a comparatively low relative humidity is fed into the drying drum 2 and impinges the wet laundry 3.
  • humidity of the wet laundry 3 is absorbed by the drying medium 4 thereby drying the laundry 3.
  • the drying medium 4 also cools down, for example to temperatures of about 40°C.
  • the drying medium 4 After having passed through the drying drum 2, the drying medium 4, having a comparatively high relative humidity, exits the drying drum 2 and is further cooled down to condense excess humidity therefrom. After that, the drying medium 4 is recirculated through the drying drum 2. Before re-entering the drying drum 2, the drying medium 4 is heated up again, thereby reducing its relative humidity.
  • the drying medium 4 is heated to a temperature comprised between 100 °C and 50°C, preferably between 70°C and 50°C, preferably between 60°C and 50°C, preferably between 60°C and 55°C, more preferably at a temperature equal to 58°C.
  • the heat pump laundry dryer 1 For dehumidifying and reheating the drying medium 4, the heat pump laundry dryer 1 comprises a heat pump system or unit 5.
  • the heat pump unit 5 exemplarily comprises a refrigerant evaporator 6 and a refrigerant liquefier 7.
  • the heat pump unit 5 further comprises a compressor 8 interconnected between the refrigerant evaporator 6 and the refrigerant liquefier 7.
  • a refrigerant evaporator outlet 9 is connected to a compressor inlet 10 and a compressor outlet 11 is connected to a refrigerant liquefier inlet 12.
  • a refrigerant liquefier outlet 13 is connected via a throttling element 14, a capillary for example, to a refrigerant evaporator inlet 15.
  • the refrigerant is cooled down and also condensed (liquefied).
  • the relatively low temperature of the refrigerant at the refrigerant evaporator 6 is used to cool down the drying medium 4 so as to condensate humidity, i.e. to dehumidify the drying medium 4 exiting the drying drum 2.
  • the elevated temperature of the refrigerant at the refrigerant liquefier 7 is used to reheat the drying medium 4 which in turn is then fed to the drying drum 2 for drying the laundry 3.
  • the drying medium may not form a closed-loop.
  • the drying medium may be conveyed to the refrigerant liquefier 7 from outside, then conveyed into the drying drum 2, from the drying drum 2 conveyed to the refrigerant evaporator 6 and finally expelled to the outside.
  • the heat pump unit 5 may further comprise auxiliary heat exchangers for further optimizing energy efficiency.
  • auxiliary refrigerant evaporator and an auxiliary refrigerant liquefier may be provided.
  • the number of auxiliary refrigerant heat exchangers can be varied from one to nearly any arbitrary number.
  • An auxiliary refrigerant evaporator may be used to speed up the heat-up phase of the heat pump dryer and a refrigerant liquefier may be used to balance the excess of energy of the heat pump dryer.
  • the heat pump laundry dryer 1 may comprise a fan 16 adapted to and designed for circulating the drying medium 4 within the heat pump laundry dryer circuit.
  • a refrigerant that is a blend comprising carbon dioxide CO 2 and at least one hydrocarbon HC.
  • a suitable mix of carbon dioxide and at least one hydrocarbon is a blend that allows obtaining a subcritical thermodynamic cycle, as will be described in detail hereinafter in particular with reference to preferred embodiments of the invention.
  • the Applicant has found that the temperature of the new refrigerant during the isobaric condensation phase in the refrigerant liquefier is lower than the critical temperature Tk of the refrigerant.
  • a suitable mix of carbon dioxide and at least one hydrocarbon wherein the percentage in weight of carbon dioxide is preferably comprised between 10% and 70%, preferably comprised between 20% and 60%, preferably comprised between 20% and 40%, preferably comprised between 25% and 35% and more preferably equal to 30%.
  • a suitable mix of carbon dioxide and at least one hydrocarbon is a blend wherein the hydrocarbon is preferably one of the following hydrocarbons: Propane (R290), Butane (R600), Isobutane (R600a), Ethane (R170) or Propene (R1270).
  • the mixture may comprise only one of said hydrocarbons or, alternatively, a combination of two or more of said hydrocarbons.
  • a particularly preferable blend comprises 30% of carbon dioxide and 70% of Propane (R290).
  • Another preferred blend comprises 30% of carbon dioxide and 70% of other hydrocarbons mixed together, wherein the weight ratio composition of the hydrocarbons may be, for example, 25 : 15 : 10 : 10 : 10 of Propane : Butane : Isobutane : Ethane : Propene, respectively.
  • the refrigerant may be a blend comprising carbon dioxide and R441a, wherein R441a is a blend composed by Ethane (C 2 H 6 ), Propane (C 3 H 8 ), Buthane (C 4 H 10 ) and Isobuthane (2-metil Propane) (C 4 H 10 ).
  • the refrigerant according to the invention is composed by natural fluids, so it is more eco-friendly than both HFCs and HFOs of known type.
  • the refrigerant of the invention does not contain, for example, Halogen atoms such as Cl (Chlorine) and F (Fluorine) but contains only C (carbon) and H (hydrogen) atoms.
  • the natural fluids of the refrigerant according to the invention does not require particular operations in terms of recycling process.
  • the GWP of the refrigerant according to the invention is close to zero.
  • the lubricant oils used are composed by synthetic oils, while mineral lubricant oils cannot be used since they are not soluble.
  • the new blend comprising carbon dioxide and at least one hydrocarbon shows a lower critical pressure and a higher critical temperature compared to the refrigerant using exclusively carbon dioxide.
  • the refrigerant of the invention may work in a subcritical thermodynamic cycle, as said above.
  • the heat pump unit 5 is therefore affected by lower pressure levels and the components of the same heat pump unit 5 may be opportunely designed to support lower pressure levels. This leads to the use of cheaper components and therefore to reduced manufacturing costs.
  • the heat pump unit 5 of the invention does not require a back pressure valve as in known system.
  • the refrigerant is in subcritical state, i.e. with pressure levels below the critical pressure. Therefore, the use of a back pressure valve arranged downstream of the refrigerant liquefier 7 as in known system, is avoided.
  • thermodynamic cycle shows a higher efficiency than a transcritical cycle.
  • the refrigerant comprising carbon dioxide and at least one hydrocarbon
  • it is a zeotropic blend.
  • Pure fluids or azeotropic blends are characterized by the fact that the temperature stays at a constant level during isobaric change of phase (evaporation and condensation).
  • Zeotropic blends are instead characterized by the fact that the temperature does not remain constant during the isobaric change of phases (it increases during the evaporation phase and it decreases during the condensation phase).
  • the temperature at which the evaporation and condensation phases occur depends on the refrigerant pressure and it is called "saturation temperature".
  • the temperature of the saturated liquid that is called “bubble temperature”
  • the temperature of the saturated vapour that is called “dew temperature”
  • the bubble temperature is lower than the dew temperature. The difference between these two values (dew temperature minus bubble temperature) is called “glide”.
  • the presence of a certain level of glide allows a better matching between the drying medium and the refrigerant temperature profiles at the refrigerant evaporator and at the refrigerant liquefier.
  • the temperature difference between the drying medium and the refrigerant decreases in case of zeotropic refrigerant, then the efficiency of the heat pump unit increases.
  • the zeotropic nature of the refrigerant comprising carbon dioxide and at least one hydrocarbon distinguishes this fluid from other fluids which does not have glide (for example the R134a fluid) or which has a low glide level (for example R407C fluid).
  • Figure 2 shows the temperature-entropy diagram relating to the refrigerant thermodynamic cycle in the case of a preferred embodiment of the refrigerant comprising a percentage in weight of carbon dioxide substantially equal to 30% and a percentage in weight of propane substantially equal to 70%; the entropy (S, in [kJ/kg K]) is on the abscissa, while the temperature (T, in [°C]) is on the ordinate. SLC denotes the saturated liquid curve and SVC denotes the saturated vapour curve. On the same diagram the temperature profile of the drying medium 4 (dashed line) is also shown (only the temperature value is relevant; the entropy values refer only to the refrigerant).
  • drying air will also be used as a synonym of the term “drying medium”.
  • the cycle depicted in solid line represents the thermodynamic cycle of the refrigerant; in particular, state 1 is the state of the refrigerant at the refrigerant liquefier inlet 12, state 2 is the state of the refrigerant at the refrigerant liquefier outlet 13, state 3 is the state of the refrigerant at the refrigerant evaporator inlet 15 and state 4 is the state of the refrigerant at the refrigerant evaporator outlet 9.
  • a degree of superheating is maintained at the refrigerant evaporator outlet 9, as illustrated by the line "SH" in figure 2 .
  • This preferably assures that no refrigerant in liquid form enters the compressor 8. In different embodiments, nevertheless, superheating may not be present.
  • a degree of subcooling may be preferably maintained at the refrigerant liquefier outlet 13.
  • Ta is the temperature of the drying air 4 upon leaving the drum 2 and entering the refrigerant evaporator 6 (point A in the diagram)
  • Tb is the temperature of the drying air 4 after having passed through the refrigerant evaporator 6 and before passing through the refrigerant liquefier 7 (point B)
  • Tc is the temperature of the drying air 4 after having passed through the refrigerant liquefier 7 before re-entering the drum 2, i.e. at the refrigerant liquefier outlet 13 (point C).
  • the critical temperature Tk of the refrigerant is also depicted. From the diagram, it can be appreciated that the temperature of the refrigerant does not remain constant during the refrigerant transitions of phase, i.e. a certain level of glide is present. In particular in the refrigerant liquefier 7 and during the isobaric condensation phase, the temperature of the refrigerant from a high temperature Td1 (dew temperature) decreases to a lower temperature Tb1 (bubble temperature). Analogously, in the refrigerant evaporator 6 and during the isobaric evaporation phase, the temperature of the refrigerant from a low temperature Tb2 increase to a higher temperature Td2 (dew temperature).
  • the refrigerant of the invention works in a subcritical thermodynamic cycle, since the temperature of the refrigerant during the isobaric condensation phase in the refrigerant liquefier 7 is lower than the critical temperature Tk of the refrigerant.
  • the drying air 4 can be heated up at a higher level, or the average condensation temperature can be lower in the refrigerant liquefier, and the drying air 4 can be cooled down at a lower level, or the average evaporation temperature can be higher in the refrigerant evaporator.
  • Tk-Tc critical temperature Tk of the refrigerant and the temperature Tc of the drying air 4 at the refrigerant liquefier outlet 13
  • Figure 3 shows the temperature-entropy diagram relating to the refrigerant thermodynamic cycle in the case of a refrigerant comprising a low concentration of carbon dioxide (namely the percentage in weight of carbon dioxide is substantially equal to 10%).
  • the temperature of the refrigerant does not remain constant during the refrigerant transitions of phase, i.e. a certain level of glide is present.
  • the temperature of the refrigerant from a high temperature T'd1 decreases to a lower temperature T'b1 (bubble temperature).
  • T'd1 dew temperature
  • T'b1 bubble temperature
  • the temperature of the refrigerant from a low temperature T'b2 increase to a higher temperature T'd2 (dew temperature).
  • Figure 4 shows the temperature-entropy diagram relating to the refrigerant thermodynamic cycle in the case of a refrigerant comprising a high concentration of carbon dioxide (namely the percentage in weight of carbon dioxide CO 2 is substantially equal to 70%)
  • the temperature of the refrigerant does not remain constant during the refrigerant transitions of phase, i.e. a certain level of glide is present.
  • the temperature of the refrigerant from a high temperature T"d1 decreases to a lower temperature T"b1 (bubble temperature).
  • T"d1 dew temperature
  • T"b1 bubble temperature
  • the temperature of the refrigerant from a low temperature T"b2 increase to a higher temperature T"d2 (dew temperature).
  • the refrigerant of the invention works in a subcritical thermodynamic cycle, since the temperature of the refrigerant during the isobaric condensation phase in the refrigerant liquefier 7 is lower than the critical temperature T"k of the refrigerant.
  • a suitable mix of carbon dioxide and at least one hydrocarbon is a blend that allows the difference between the critical temperature Tk, T'k, T"k of the refrigerant and the temperature Tc, T'c, T"c of the drying air 4 at the refrigerant liquefier outlet 13, to be comprised between +40°C and - 40°C, preferably between +30°C and -30°C, more preferably between +20°C and -20°C.
  • a suitable mix of carbon dioxide and at least one hydrocarbon is a blend that allows the critical temperature Tk, T'k of the refrigerant to be equal or higher than the temperature Tc, T'c of the drying air 4 at the refrigerant liquefier outlet 13.
  • the difference between the critical temperature Tk, T'k of the refrigerant and the temperature Tc, T'c of the drying air 4 at the refrigerant liquefier outlet 13 is comprised between +40°C and 0°C, preferably between +30°C and 10°C, preferably between +25°C and 15°C, more preferably equal to 20°C.
  • the Applicant has found to be of particular advantage that the critical temperature Tk, T'k, T"k of the refrigerant is comprised between 100°C and 34°C, preferably between 90°C and 40°C, preferably between 80°C and 60°C, preferably between 75°C and 65°C more preferably equal to 70°C.
  • FIG. 5 is an isometric view of an exemplary laundry dryer 1.
  • the laundry dryer 1 comprises a cabinet 700, having lateral walls (one of which has been removed in the drawing) and housing the drying drum 2 and the heat pump unit 5.
  • the heat pump unit 5 is for example housed in an appliance basement 705, which is shown per se in Figure 6 .
  • the basement 705 is for example a shell composed of two half-shells 805 and 810 designed to match each other so that, when matched, they define inside them a space for accommodating the heat pump unit parts, like the refrigerant evaporator 6, the refrigerant liquefier 7, the compressor 8, the capillary 14 and passageways for the drying air 4.
  • the laundry dryer may also be provided with a carbon dioxide detector (or sensor).
  • a carbon dioxide detector or sensor
  • NDIR infrared gas sensors
  • chemical gas sensors may be used. This sensor advantageously detects the presence of carbon dioxide in case of refrigerant leakage.
  • the sensor therefore, will immediately detect the carbon dioxide leakage before the hydrocarbons leakage occurs and will preferably and advantageously send an alarm signal.
  • the alarm signal may be opportunely elaborated from the central processing unit of the laundry dryer in order to take proper actions to avoid risks.
  • the processing unit will take proper actions to reduce/eliminate the risk of fire and/or explosion of leaking hydrocarbons.
  • the present invention allows the set objects to be achieved.
  • it makes it possible to obtain a appliance for treating articles, in particular an appliance for treating laundry or tableware, having an increased energy efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
EP13811965.6A 2013-12-20 2013-12-20 Appliance having a heat pump for treating articles Not-in-force EP3084065B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13811965.6T PL3084065T3 (pl) 2013-12-20 2013-12-20 Urządzenie z pompą ciepła do obróbki wyrobów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/077614 WO2015090431A1 (en) 2013-12-20 2013-12-20 Appliance having a heat pump for treating articles

Publications (2)

Publication Number Publication Date
EP3084065A1 EP3084065A1 (en) 2016-10-26
EP3084065B1 true EP3084065B1 (en) 2022-03-30

Family

ID=49880788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13811965.6A Not-in-force EP3084065B1 (en) 2013-12-20 2013-12-20 Appliance having a heat pump for treating articles

Country Status (3)

Country Link
EP (1) EP3084065B1 (pl)
PL (1) PL3084065T3 (pl)
WO (1) WO2015090431A1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108978120A (zh) * 2017-06-05 2018-12-11 山东君睿机械科技有限公司 一种变压洗衣机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2220383C1 (ru) * 2002-04-22 2003-12-27 Шляховецкий Валентин Михайлович Рабочее вещество для компрессионных холодильных установок и тепловых насосов и установка для его реализации
JP2008212170A (ja) * 2007-02-28 2008-09-18 Sanyo Electric Co Ltd 乾燥機
EP2053159A1 (en) 2007-10-25 2009-04-29 BSH Electrodomésticos España, S.A. Household appliance containing a heat transfer fluid
RU2547118C2 (ru) * 2010-05-20 2015-04-10 Мексичем Аманко Холдинг С.А. Де С.В. Теплообменные композиции
EP2412868A1 (en) * 2010-07-29 2012-02-01 BSH Bosch und Siemens Hausgeräte GmbH Machine and process for drying humid articles with superheating a refrigerant
EP2674525A1 (en) * 2012-06-14 2013-12-18 Electrolux Home Products Corporation N.V. Apparatus comprising a heat pump system

Also Published As

Publication number Publication date
PL3084065T3 (pl) 2022-08-16
EP3084065A1 (en) 2016-10-26
WO2015090431A1 (en) 2015-06-25

Similar Documents

Publication Publication Date Title
Wang et al. A comprehensive review and analysis on CO2 heat pump water heaters
Chen et al. Screening of working fluids for the ejector refrigeration system
US20180363965A1 (en) Refrigeration cycle apparatus
Wang et al. Review of secondary loop refrigeration systems
Aprea et al. An experimental investigation of the energetic performances of HFO1234yf and its binary mixtures with HFC134a in a household refrigerator
US8356423B2 (en) Household appliance containing a heat transfer fluid
US20090095014A1 (en) Working fluid of a blend of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and 1,1,1,3,3,3-hexafluoropropane and method and apparatus for using
Mancini et al. Thermodynamic analysis and experimental investigation of a CO2 household heat pump dryer
Ju et al. Performance assessment of heat pump water heaters with R1233zd (E)/HCs binary mixtures
Arpagaus et al. Experimental results of HFO/HCFO refrigerants in a laboratory scale HTHP with up to 150 C supply temperature
Gatarić et al. Evaluating R450A as a drop-in replacement for R134a in household heat pump tumble dryers
Ünal et al. Influence of mixing section inlet and diffuser outlet velocities on the performance of ejector-expansion refrigeration system using zeotropic mixture
Cop et al. Experimental investigation of a heat pump tumble dryer with a zeotropic refrigerant mixture
Babarinde et al. Comparative analysis of the exergetic performance of a household refrigerator using R134a and R600a
EP2690213A1 (en) Appliance for treating articles
Bolaji et al. A theoretical comparison of two eco-friendly refrigerants as alternatives to R22 using a simple vapour compression refrigeration system
Paharia et al. Effect of sub cooling and superheating on vapour compression refrigeration systems using R-22 alternative refrigerants
WO2015090431A1 (en) Appliance having a heat pump for treating articles
Verma et al. A review of alternative to R134a (CH3CH2F) refrigerant
EP2479337B1 (en) Household appliance for drying objects
Pavkovic Refrigerants–Part 1: Properties and air-conditioning applications
Khan et al. Energy and exergy analysis of vapour compression refrigeration system with R12, R22, R134a
Satsangi et al. R134a refrigerant in vapour compression cycle: a review paper
Yıldırım et al. Evaluation of performance of hfc-r134a/hfo-1234yf binary mixtures used as refrigerant in a heat pump system
EP2690214A1 (en) Appliance for treating articles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160720

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210525

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

INTC Intention to grant announced (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20211022

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1479286

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220415

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602013081266

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220630

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220630

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220330

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1479286

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220701

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220801

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220730

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602013081266

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20221213

Year of fee payment: 10

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20221209

Year of fee payment: 10

26N No opposition filed

Effective date: 20230103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221228

Year of fee payment: 10

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230625

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221220

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221220

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221220

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20131220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602013081266

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330