EP2189568B1 - Machine à laver et sécher le linge - Google Patents

Machine à laver et sécher le linge Download PDF

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Publication number
EP2189568B1
EP2189568B1 EP20080169589 EP08169589A EP2189568B1 EP 2189568 B1 EP2189568 B1 EP 2189568B1 EP 20080169589 EP20080169589 EP 20080169589 EP 08169589 A EP08169589 A EP 08169589A EP 2189568 B1 EP2189568 B1 EP 2189568B1
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EP
European Patent Office
Prior art keywords
refrigerant
heat exchanger
water
air
laundry
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
EP20080169589
Other languages
German (de)
English (en)
Other versions
EP2189568A1 (fr
Inventor
Gordon Elger
Alberto Bison
Massimiliano Vignocchi
Jean-Yves Noel
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 Home Products Corp NV
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Electrolux Home Products Corp NV
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 Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP20080169589 priority Critical patent/EP2189568B1/fr
Priority to AT08169589T priority patent/ATE540154T1/de
Priority to PCT/EP2009/006394 priority patent/WO2010057547A1/fr
Priority to CN2009801532154A priority patent/CN102272373B/zh
Priority to US13/130,334 priority patent/US20120272689A1/en
Priority to BRPI0920911A priority patent/BRPI0920911A2/pt
Publication of EP2189568A1 publication Critical patent/EP2189568A1/fr
Application granted granted Critical
Publication of EP2189568B1 publication Critical patent/EP2189568B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • 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 washing and drying machine.
  • the present invention relates to a front-loading home laundry washing and drying machine, to which the following description refers purely by way of example.
  • front-loading laundry washing and drying machines generally comprise a substantially parallelepiped-shaped outer box casing resting on the floor; a substantially bell-shaped washing tub which is suspended in floating manner inside the casing by means of a number of coil springs and shock-absorber, directly facing a laundry loading and unloading opening formed in the front face of the casing; a door hinged to the front face of the casing to rotate to and from a closing position in which the door closes the opening in the front face of the casing to seal the washing tub; a substantially bell-shaped cylindrical revolving drum for housing the laundry to be washed and dried, and which is housed substantially horizontally inside the washing tub to rotate about its longitudinal axis; and an electric motor for rotating the revolving drum about its longitudinal axis inside the washing tub.
  • Front-loading laundry washing and drying machines of the above type also have a water supply and recirculating circuit for supplying a given amount of tap water into the washing tub, and for circulating said water into the washing tub during washing and rinsing phases of the washing cycle; and a closed-circuit, hot-air generator designed to circulate inside the washing tub a stream of hot air with a low moisture content, and which flows through the revolving drum and over the laundry inside the drum to rapidly dry the laundry.
  • the closed-circuit, hot-air generator comprises an air recirculating conduit having its two ends connected to the washing tub, on opposite sides of the latter; an electric centrifugal fan located along the recirculating conduit to produce, inside the latter, an airflow which flows through the washing tub and the revolving drum; and finally a heat-pump assembly having its two heat exchangers located one after the other, along the air recirculating conduit.
  • the first air/refrigerant heat exchanger of the heat-pump assembly provides for rapidly cooling the airflow arriving from the washing tub to condense the surplus moisture in the airflow; whereas the second air/refrigerant heat exchanger of the heat-pump assembly provides for rapidly heating the airflow arriving from the first heat exchanger and directed back to the washing tub, so that the airflow re-entering into the washing tub is heated rapidly to a temperature higher than or equal to that of the air flowing out of the washing tub.
  • the heat-pump assembly of the hot-air generator comprises:
  • first and second air/refrigerant heat exchangers of the heat-pump assembly are located along the air recirculating conduit, so as that the second air/refrigerant heat exchanger provides for rapidly cooling the airflow arriving from the washing tub to condense the surplus moisture in the airflow, and the first air/refrigerant heat exchanger provides for rapidly heating the airflow arriving from the second air/refrigerant heat exchanger and directed back to the washing tub, so that the airflow entering into the tub is heated rapidly to a temperature higher than or equal to that of the same air flowing out of the tub.
  • the first air/refrigerant heat exchanger of the heat-pump assembly i.e. the heat exchanger which heats up the airflow directed back to the washing tub
  • the first air/refrigerant heat exchanger of the heat-pump assembly is also used for heating up the tap water necessary for performing the washing and rinsing phases of the washing cycle.
  • This heat exchanger in fact, is structured for performing an optimal heat exchange between two fluids in gaseous state (i.e. the dehumidified air directed back to the washing tub and the refrigerant in the gaseous state), and therefore it is unable to allow an optimal heat exchange between a fluid in liquid state and a fluid in gaseous state.
  • the first heat exchanger of the heat-pump-type, hot-air generator is unable to speedy heat up the washing water stored in the washing tub.
  • a laundry washing and drying machine as claimed in Claim 1 and preferably, though not necessarily, in any one of the Claims depending directly or indirectly on Claim 1.
  • number 1 indicates as a whole a laundry washing and drying machine comprising a preferably, though not necessarily, parallelepiped-shaped outer box casing 2 resting on the floor; a substantially bell-shaped washing tub 3 suspended in floating manner inside casing 2 via a suspension system comprising a number of coil springs 4 (only one shown in Figure 1 ) preferably, though not necessarily, combined with one or more vibration dampers 5 (only one shown in Figure 1 ); a substantially bell-shaped cylindrical revolving drum 6 for housing the laundry to be washed and/or dried, and which is fixed in axially rotating manner inside washing tub 3 for rotating about its longitudinal axis L; and an electric motor assembly 7 for rotating, on command, revolving drum 6 about its longitudinal axis L inside washing tub 3.
  • laundry washing and drying machine 1 is a front-loading home washing and drying machine, therefore washing tub 3 is suspended substantially horizontally inside casing 2, with the front opening of washing tub 3 directly faced to a laundry loading and unloading opening formed in a front face 2a of casing 2.
  • Revolving drum 6, in turn, is housed into washing tub 3 so that its longitudinal axis L is oriented substantially horizontally, and coincides with the longitudinal axis of washing tub 3.
  • laundry washing and drying machine 1 is also provided with a cylindrical elastic-deformable bellows 8 connecting the front opening of washing tub 3 to the laundry loading and unloading opening formed in front face 2a of casing 2, and with a door (not shown) hinged to front face 2a of casing 2 to rotate to and from a closing position in which the door closes the laundry loading and unloading opening in front face 2a to seal washing tub 3.
  • laundry washing and drying machine 1 is also provided with a water supply and recirculating system 9 for supplying a given amount of tap water into washing tub 3, and for circulating said water into washing tub 3 during washing and rinsing phases of the washing cycle; and with a closed-circuit, hot-air generator 10 designed to circulate inside washing tub 3 a stream of hot air with a low moisture content, and which flows through revolving drum 6 and over the laundry inside the drum to rapidly dry the laundry.
  • a water supply and recirculating system 9 for supplying a given amount of tap water into washing tub 3, and for circulating said water into washing tub 3 during washing and rinsing phases of the washing cycle
  • a closed-circuit, hot-air generator 10 designed to circulate inside washing tub 3 a stream of hot air with a low moisture content, and which flows through revolving drum 6 and over the laundry inside the drum to rapidly dry the laundry.
  • closed-circuit, hot-air generator 10 provides for gradually drawing air from washing tub 3; extracting surplus moisture from the air drawn from washing tub 3; heating the dehumidified air to a predetermined temperature, normally higher than the temperature of the air from washing tub 3; and feeding the heated, dehumidified air back into washing tub 3, where it flows over, to rapidly dry, the laundry inside the revolving drum 6.
  • laundry washing and drying machine 1 is preferably, though not necessarily, provided with a detergent drawer (not shown) which is removably housed inside a seat on front face 2a of casing 2, and which has at least one compartment for a given amount of detergent and/or softener for use in the washing cycle.
  • a detergent drawer (not shown) which is removably housed inside a seat on front face 2a of casing 2, and which has at least one compartment for a given amount of detergent and/or softener for use in the washing cycle.
  • the seat communicates directly with washing tub 3, and the water supply and recirculating system 9 consists of a drawer flush circuit 11 which, on command, feeds a given amount of tap water into the compartments of the detergent drawer to flush the detergent and/or softener out of the compartments and down into washing tub 3; and of a washing water recirculating and draining circuit 12 which, on command, sucks the washing water from the bottom of washing tub 3 and feeds said water back into the revolving drum 6, or alternatively drains the water accumulated into the washing tub 3 into a waste-water exhaust duct (not shown) located out of the laundry washing and drying machine 1.
  • a drawer flush circuit 11 which, on command, feeds a given amount of tap water into the compartments of the detergent drawer to flush the detergent and/or softener out of the compartments and down into washing tub 3
  • a washing water recirculating and draining circuit 12 which, on command, sucks the washing water from the bottom of washing tub 3 and feeds said water back into the revolving drum 6,
  • the drawer flush circuit 11 comprises at least one water supply pipe 13, which is connected to the external water supply main M of the building in which the washing machine is installed, and terminates directly over the detergent drawer; and at least one electrically controlled on-off valve 14 interposed between water supply pipe 13 and the water supply main M to regulate the pressurized-water flow to the end of water supply pipe 13, so as to sprinkle, on command, the compartment/s of the detergent drawer.
  • electrically controlled on-off valve 14 is a conventional controlled-open-close solenoid valve 14.
  • the washing water recirculating and draining circuit 12 comprises a water recirculating pipe 15 having a first end in communication with the bottom of washing tub 3, and a second end faced to, or connected in known manner to, the revolving drum 6; an electrically operated water circulating pump 16 located along water recirculating pipe 15 for sucking the washing water from the bottom of washing tub 3 and pumping said water towards revolving drum 6; water filtering means (not shown) located along water recirculating pipe 15, preferably, though not necessarily, upstream of pump 16; and an electrically controlled tree-way valve 17 which is located along water recirculating pipe 15, immediately downstream of pump 16, for channeling, on command, the water flowing along recirculating pipe 15 into a water draining pipe 18 which is in communication with the waste-water exhaust duct (not shown) located out of the laundry washing and drying machine 1.
  • hot-air generator 10 is a heat-pump-type, hot-air generator and substantially comprises:
  • Heat-pump assembly 21 operates in the same way as a traditional heat-pump - which is capable of transferring heat from one fluid to another using an intermediate gaseous refrigerant subjected to a closed thermodynamic cycle, the thermodynamic principles of which are widely known and therefore not described in detail - but, differently from known laundry washing and drying machines, heat-pump assembly 21 is a bi-directional device and it comprises:
  • refrigerant heat exchanger 23 is located along air recirculating conduit 19, upstream of washing tub 3 - and preferably, thought not necessarily, downstream of centrifugal fan 20 -, and is designed so that the refrigerant arriving from the bi-directional closed-circuit refrigerant circulating means and the airflow f directed to washing tub 3 flow through it simultaneously, allowing the refrigerant to release or absorb heat to/from said airflow f, thus rapidly heating or cooling the airflow f.
  • refrigerant heat exchanger 24 is located out of air recirculating conduit 19, and is designed so that the washing water arriving from revolving drum 3 and the refrigerant arriving from the bi-directional closed-circuit refrigerant circulating means flow through it simultaneously, allowing the refrigerant to release or absorb heat to/from said washing water, thus rapidly heating or cooling the washing water arriving from revolving drum 3; and hot-air generator 10 is also provided with:
  • heat-pump assembly 21 comprises:
  • Heat-pump assembly 21 also comprises a number of suitable connecting pipes which connect refrigerant compressing device 22, air/refrigerant heat exchanger 23, water/refrigerant heat exchanger 24 and refrigerant expansion device 27 one to the other, so as to form a closed circuit allowing the refrigerant coming out from the outlet of compressing device 22 to flow through, in sequence, air/refrigerant heat exchanger 23, refrigerant expansion device 27 and water/refrigerant heat exchanger 24, before returning to the inlet of compressing device 22; and an electrically controlled four-way hydraulic distributor 28 which connects compressing device 22 to both the air/refrigerant heat exchanger 23 and the water/refrigerant heat exchanger 24.
  • the four-way hydraulic distributor 28 is structured for selectively putting the outlet of compressing device 22 in direct communication with the air/refrigerant heat exchanger 23 or, alternatively, the water/refrigerant heat exchanger 24, and the inlet of compressing device 22 in direct communication with the other refrigerant heat exchanger 23 or 24, so as to select, on command, the flowing direction of the refrigerant through the air/refrigerant heat exchanger 23, the water/ refrigerant heat exchanger 24 and the refrigerant expansion device 27.
  • hydraulic distributor 28 is able to reverse, on command, the normal flowing direction of the refrigerant along, in sequence, the air/refrigerant heat exchanger 23, the refrigerant expansion device 27 and the water/refrigerant heat exchanger 24.
  • the refrigerant releases heat to the water arriving from washing tub 3 when flowing through water/refrigerant heat exchanger 24, and absorbs heat from the air circulating into the air recirculating conduit 19 when flowing through air/refrigerant heat exchanger 23.
  • the water/refrigerant heat exchanger 24 and the electrically controlled four-way hydraulic distributor 28 are commonly know parts in the heat-pump technical field, and therefore not described in detail.
  • air/water heat exchanger 25 is a commonly know part in the washing machine technical field, and therefore not described in detail.
  • the water circulation circuit 26 comprises a first pipe 29 connecting the bottom of washing tub 3 to the inlet of water/refrigerant heat exchanger 24; a second pipe 30 connecting the outlet of water/refrigerant heat exchanger 24 to the inlet of the air/water heat exchanger 25; a third pipe 31 connecting the outlet of air/water heat exchanger 25 to the bottom of washing tub 3; and an electrically powered water circulating pump 32 which is located along pipe 29 (or alternatively along pipe 30 or pipe 31) for sucking, on command, the washing water from the bottom of washing tub 3 and circulating said water through, in sequence, the water/refrigerant heat exchanger 24 and the air/water heat exchanger 25, or vice versa, before feeding said water back into washing tub 3.
  • the electrically operated centrifugal fan 20 is preferably, though not necessarily, located between air/refrigerant heat exchanger 23 and air/water heat exchanger 25; and hot-air generator 10 also comprises electrically controlled air valves, air baffles or similar airflow control means, which are able to put, on command, the air recirculating conduit 19 in direct communication with the outside, for allowing external air to circulate through air/refrigerant heat exchanger 23.
  • said airflow control means are preferably, though not necessarily, also able to prevent, at the same time, the external air from circulating through the air/water heat exchanger 25.
  • hot-air generator 10 is provided with two three-way valves 33 and 34, which are located along air recirculating conduit 19, on both sides of air/refrigerant heat exchanger 23, so to divide air recirculating conduit 19 into two consecutive segments, each of which crosses a respective heat exchanger 23, 25.
  • Both three-way valves 33 and 34 are designed to put the first segment of air recirculating conduit 19 that crosses air/refrigerant heat exchanger 23, in direct communication with the outside or, alternatively, in direct communication with the other segment of the air recirculating conduit 19, so to allow external air to circulate through air/refrigerant heat exchanger 23 while, at the same time, preventing said external air from circulating through the air/water heat exchanger 25.
  • three-way valve 33 is preferably, though not necessarily, located between air/water heat exchanger 25 and centrifugal fan 20, whereas three-way valve 34 is preferably, though not necessarily, located between air/refrigerant heat exchanger 23 and washing tub 3.
  • This arrangement of valves 33 and 34 allows the use of centrifugal fan 20 for generating the airflow f along the whole air recirculating conduit 19, or the airflow f' along the segment of air recirculating conduit 19 that crosses the air/refrigerant heat exchanger 23.
  • the electronic central control unit 35 of the laundry washing and drying machine 1 opens the on-off valve 14 of drawer flush circuit 11 to fill up the bottom of washing tub 3 with an appropriate quantity of tap water.
  • central control unit 35 when tap water reaches the predetermined level within washing tub 3, central control unit 35
  • central control unit 35 switches on, respectively, centrifugal fan 20, compressing device 22, and pump 32 of the water circulation circuit 26, to enable heat-pump assembly 21 to transfer heat from the airflow f' circulating through air/refrigerant heat exchanger 23 and arriving from the outside of the household appliance, to the water circulating into water circulation circuit 26 and directed back to washing tub 3.
  • the high-temperature and high-pressure refrigerant coming out from compressing device 22 passes through hydraulic distributor 28 and reaches the water/refrigerant heat exchanger 24, inside which the refrigerant releases heat to the tap water arriving from the bottom of washing tub 3 and directed back to washing tub 3.
  • the high-temperature and high-pressure refrigerant arriving from compressing device 22 heats up the water circulating into water circulation circuit 26.
  • the high-pressure refrigerant coming out from compressing device 22 then passes through the refrigerant expansion device 27, wherein the refrigerant is rapidly expanded so that pressure and temperature of the refrigerant entering in the air/refrigerant heat exchanger 23 are much lower than pressure and temperature of the refrigerant coming out from the water/refrigerant heat exchanger 24.
  • the low-pressure and low-temperature refrigerant arriving from expansion device 27 and flowing back to compressing device 22 absorbs heat from the airflow f' circulating through air/refrigerant heat exchanger 23, thus rapidly cooling the airflow f' flowing along the segment of air recirculating conduit 19 that crosses the air/refrigerant heat exchanger 23.
  • the air/water heat exchanger 25 Since no air flows through the air/water heat exchanger 25, the air/water heat exchanger 25 operates like a traditional water conduit, and the temperature of the water arriving from the water/refrigerant heat exchanger 24 and directed back to washing tub 3 remains unchanged. In other words, all heat absorbed from the airflow f' arriving from the outside is transferred to the tap water circulating into water circulation circuit 26.
  • central control unit 35 may either switch off the hot-air generator 10 (i.e. centrifugal fan 20, compressing device 22 and pump 32) and start washing the laundry placed inside revolving drum 6 with the heated up tap water, or may open again on-off valve 14 to pour some more tap water into washing tub 3 and continue heating the water within the tub.
  • the hot-air generator 10 i.e. centrifugal fan 20, compressing device 22 and pump 32
  • central control unit 35 may either switch off the hot-air generator 10 (i.e. centrifugal fan 20, compressing device 22 and pump 32) and start washing the laundry placed inside revolving drum 6 with the heated up tap water, or may open again on-off valve 14 to pour some more tap water into washing tub 3 and continue heating the water within the tub.
  • central control unit 35 switches again the hydraulic distributor 28 to put the outlet of compressing device 22 in direct communication with the air/refrigerant heat exchanger 23 and the inlet of compressing device 22 in direct communication with the water/refrigerant heat exchanger 24; and switches the three-way valves 33 and 34 back in their first operative configuration to isolate the air recirculating conduit 19 from the outside, and to let the airflow f flow along the whole air recirculating conduit 19.
  • central control unit 35 switches on centrifugal fan 20, compressing device 22, and pump 32 of the water circulation circuit 26, to enable heat-pump assembly 21 to rapidly cool the airflow f coming out from washing tub 3 for condensing the surplus moisture in the airflow f, and then to rapidly heat the airflow f returning back into washing tub 3, so that the airflow f entering into washing tub 3 is heated rapidly to a temperature higher than or equal to that of the same air flowing out of the washing tub 3.
  • the cold water flowing in the water circulation circuit 26 is used for transferring heat from the airflow f coming out from washing tub 3 to the refrigerant flowing through the water/refrigerant heat exchanger 24.
  • the high temperature and pressure refrigerant coming out from compressing device 22 passes through hydraulic distributor 28 and reaches the air/refrigerant heat exchanger 23 inside which the refrigerant releases heat to the airflow f flowing into the air recirculating conduit 19, back to washing tub 3.
  • the high-temperature and high-pressure refrigerant arriving from compressing device 22 heats up the airflow f directed back into washing tub 3.
  • the high-pressure refrigerant coming out from compressing device 22 then passes through the refrigerant expansion device 27, wherein the refrigerant is rapidly expanded so that pressure and temperature of the refrigerant entering in the water/refrigerant heat exchanger 24 are much lower than pressure and temperature of the refrigerant coming out from the air/refrigerant heat exchanger 23.
  • the low-pressure and low-temperature refrigerant arriving from expansion device 27 and flowing back to compressing device 22 absorbs heat from the water arriving from the bottom of washing tub 3 and directed back to washing tub 3, thus rapidly cooling the water circulating into the water circulation circuit 26 and directed to the air/water heat exchanger 25.
  • the cold water circulating into the water circulation circuit 26 may consist in a given quantity of the rinsing water previously used in the rinsing phase of the washing and drying cycle, or may consist in a given quantity of fresh water provided by the water supply and recirculating system 9 (namely the drawer flush circuit 11).
  • the cold water circulating into the water circulation circuit 26 consists preferably, though not necessarily, in a given quantity of fresh water provided by the water supply and recirculating system 9.
  • the temperature of the washing water leaving the air/water heat exchanger 25 and directed back to the water/refrigerant heat exchanger 24 is slightly higher than the temperature of the washing water arriving from the water/refrigerant heat exchanger 24, and the increase in the water temperature is due to the heat amount absorbed from the airflow f arriving from washing tub 3. This heat amount is immediately transferred to the refrigerant flowing back to compressing device 22 within the water/refrigerant heat exchanger 24.
  • the water flowing into the water circulation circuit 26 only transfers heat from the airflow f arriving from washing tub 3 to the low-pressure and low-temperature refrigerant flowing back to compressing device 22.
  • the bottom of washing tub 3 is structured to contain a sufficient quantity of fresh or rinsing water to be used in the drying cycle, and, at the same time, to prevent said fresh or rinsing water to reach the revolving drum 6 and the laundry stored inside the drum.
  • heat-pump assembly 21 has lots of advantages. Firstly the heat exchange taking place in heat exchanger 24 of heat-pump assembly 21 always involves a fluid in gaseous state (i.e. the refrigerant) and a fluid in liquid state (i.e. the washing water stored in washing tub 3), thus heat exchanger 24 assures optimal heat-exchange performances both when laundry is dried, and when washing water is heated up.
  • a fluid in gaseous state i.e. the refrigerant
  • a fluid in liquid state i.e. the washing water stored in washing tub 3
  • the air/water heat exchanger 25 is a water spray condenser 25
  • the washing water circulating in water circulation circuit 26 can be used for capturing fluff or lint particles in the airflow f arriving from washing tub 3.
  • the water circulation circuit 26 may be integrated in the water recirculating and draining circuit 12, so as to reduce the number of water pumps.
  • the tree-way valve 17 instead of selectively channeling into water draining pipe 18 the water flowing along recirculating pipe 15, the tree-way valve 17 channels, on command, the water flowing along recirculating pipe 15 directly into water pipe 29; and the water recirculating and draining circuit 12 is provided with a second electrically controlled tree-way valve 17' which is located along water pipe 29 for channeling, on command, the water flowing along pipe 29 into water draining pipe 18.
  • pump 16 can suck the washing water from the bottom of washing tub 3 and feed said either towards revolving drum 6, or towards water/refrigerant heat exchanger 24.
  • the bi-directional closed-circuit refrigerant circulating means of heat-pump assembly 21 may lack the electrically controlled four-way hydraulic distributor 28, and may comprise instead two refrigerant compressing devices 22 which are connected to heat exchanger 23 and heat exchanger 24 via two electrically controlled three-way valves 36.
  • the two refrigerant compressing devices 22 are in anti-parallel one to the other, so that each three-way valves 36 communicates with the inlet of a first refrigerant compressing device 22, and with the outlet of a second refrigerant compressing device 22.
  • the electronic central control unit 35 of the laundry washing and drying machine 1 controls both three-way valves 36 so to selectively connect only one of the two refrigerant compressing devices 22 to heat exchanger 23 and heat exchanger 24, while keeping the other refrigerant compressing device 22 isolated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)

Claims (10)

  1. Machine à laver et sécher le linge (1) comprenant un boîtier (2) et, à l'intérieur du boîtier, un contenant pour linge (3, 6), permettant de loger le linge à laver et sécher, et un générateur d'air chaud (10) capable de faire circuler un courant d'air chaud à l'intérieur dudit contenant pour linge (3, 6), et pour chauffer l'eau de lavage stockée dans le contenant pour linge (3, 6) ; ledit générateur d'air chaud (10) comprenant
    - un conduit de recirculation d'air (19) raccordé aux deux extrémités audit contenant pour linge (3, 6) ;
    - des moyens de ventilation (20) capables de produire, le long du conduit de recirculation (8), un flux d'air (f) qui s'écoule à travers le contenant pour linge (3, 6) ; et
    - un ensemble de pompe à chaleur (21) qui est capable de refroidir rapidement le flux d'air (f) sortant du contenant pour linge (3, 6) en vue de condenser le surplus d'humidité dans ledit flux d'air (f), puis de chauffer rapidement le flux d'air (f) retournant dans ledit contenant pour linge (3, 6) ;
    ledit ensemble de pompe à chaleur (21) étant un dispositif bidirectionnel comprenant :
    - un premier (23) et un second (24) échangeur de chaleur à fluide frigorigène conçus de sorte que le fluide frigorigène s'écoulant au travers puisse libérer ou absorber alternativement la chaleur provenant d'autres fluides s'y écoulant simultanément à travers ledit premier (23) et ledit second (24) échangeur de chaleur ; et
    - des moyens de circulation de fluide frigorigène bidirectionnel (22, 27, 28, 36) capables de faire circuler un fluide frigorigène en succession à travers ledit premier (23) et ledit second (24) échangeur de chaleur tout en soumettant ledit fluide frigorigène en succession à une compression et une détente dans le passage d'un échangeur de chaleur à fluide frigorigène (23, 24) à l'autre, de sorte que de manière alternée, le premier (23) ou le second (24) échangeur de chaleur à fluide frigorigène peut recevoir un fluide frigorigène haute pression et haute température tandis que l'autre échangeur de chaleur à fluide frigorigène reçoit un fluide frigorigène basse pression et basse température ;
    ladite machine à laver et sécher le linge (1) étant caractérisée en ce que ledit premier échangeur de chaleur à fluide frigorigène (23) est situé le long du conduit de recirculation d'air (19), et est conçu de sorte que le fluide frigorigène arrivant des moyens de circulation de fluide frigorigène bidirectionnels (22, 27, 28, 36) et le flux d'air (f, f') dirigé vers le contenant pour linge (3, 6) s'y écoule simultanément, permettant au fluide frigorigène de libérer ou d'absorber la chaleur vers/depuis ledit flux d'air (f, f') ; ledit second échangeur de chaleur à fluide frigorigène (24) étant en revanche situé hors du conduit de recirculation d'air (19), et étant conçu de sorte que l'eau de lavage arrivant du contenant pour linge (3, 6) et le fluide frigorigène arrivant des moyens de circulation de fluide frigorigène à circuit fermé bidirectionnels (22, 27, 28, 36) s'y écoulent simultanément, permettant au fluide frigorigène de libérer ou absorber la chaleur vers/depuis ladite eau de lavage ; le générateur d'air chaud (10) étant également pourvu :
    - d'un échangeur de chaleur air/eau (25) qui est situé le long du conduit de recirculation d'air (19), en amont du premier échangeur de chaleur à fluide frigorigène (23), et est conçu de sorte que le flux d'air (f) arrivant du contenant pour linge (3, 6) et l'eau arrivant dudit second échangeur de chaleur à fluide frigorigène (24) s'y écoulent simultanément, permettant à l'eau d'absorber la chaleur du flux d'air (f) ; et
    - d'un circuit de circulation d'eau (26) permettant de faire circuler l'eau stockée dans le contenant pour linge (3, 6) à travers le second échangeur de chaleur à fluide frigorigène (24) et l'échangeur de chaleur air/eau (25).
  2. Machine à laver et sécher le linge selon la revendication 1, dans laquelle le générateur d'air chaud (10) est également pourvu de moyens de commande de flux d'air (33, 34) qui sont situés le long du conduit de recirculation d'air (19) pour placer, sur commande, ledit conduit de recirculation d'air (19) en communication avec l'extérieur, pour permettre à l'air externe (f') de circuler à travers le premier échangeur de chaleur à fluide frigorigène (23).
  3. Machine à laver et sécher le linge selon la revendication 2, dans laquelle lesdits moyens de commande de flux d'air (33, 34) sont également capables d'empêcher une circulation d'air à travers l'échangeur de chaleur air/eau (25), lorsque le conduit de recirculation d'air (19) est en communication avec l'extérieur.
  4. Machine à laver et sécher le linge selon l'une quelconque des revendications précédentes, dans laquelle lesdits moyens de ventilation (20) sont situés le long du conduit de recirculation d'air (19), entre l'échangeur de chaleur air/eau (25) et le premier échangeur de chaleur à fluide frigorigène (23).
  5. Machine à laver et sécher le linge selon la revendication 4, dans laquelle lesdits moyens de commande de flux d'air (33, 34) comprennent deux soupapes à trois voies (33, 34) ou similaires, qui sont situées le long du conduit de recirculation d'air (19), des deux côtés du premier échangeur de chaleur à fluide frigorigène (23), de façon à diviser le conduit de recirculation d'air (19) en deux segments consécutifs dont chacun croise un échangeur de chaleur (23, 24) respectif ; les deux soupapes à trois voies (33, 34) ou similaires étant conçues pour placer le segment du conduit de recirculation d'air (19) qui croise le premier échangeur de chaleur à fluide frigorigène (23), en communication directe, de manière alternée, avec l'extérieur ou avec l'autre segment du conduit de recirculation d'air (19).
  6. Machine à laver et sécher le linge selon la revendication 5, dans laquelle une première soupape à trois voies (33) ou similaire est située entre l'échangeur de chaleur air/eau (25) et les moyens de ventilation (20), et une seconde soupape à trois voies (34) ou similaire est située entre le premier échangeur de chaleur à fluide frigorigène (23) et le contenant pour linge (3, 6).
  7. Machine à laver et sécher le linge selon l'une quelconque des revendications précédentes, dans laquelle ledit circuit de circulation d'eau (26) comprend un premier tuyau (15 ; 29) raccordant le fond du contenant pour linge (3, 6) à l'admission du second échangeur de chaleur à fluide frigorigène (24) ; un deuxième tuyau (30) raccordant le refoulement du second échangeur de chaleur à fluide frigorigène (24) à l'admission de l'échangeur de chaleur air/eau (25) ; un troisième tuyau (31) raccordant le refoulement de l'échangeur de chaleur air/eau (25) au contenant pour linge (3, 6) ; et une pompe de circulation d'eau (16 ; 32) qui est située le long dudit premier (15 ; 29), dudit deuxième (30) ou dudit troisième tuyau (31) pour aspirer, sur commande, l'eau de lavage provenant du fond du contenant pour linge (3, 6) et faire circuler ladite eau à travers le second échangeur de chaleur à fluide frigorigène (24) et l'échangeur de chaleur air/eau (25), avant de ramener ladite eau dans le contenant pour linge (3, 6).
  8. Machine à laver et sécher le linge selon l'une quelconque des revendications précédentes, dans laquelle ledit contenant pour linge (3, 6) comprend une cuve de lavage (3) suspendue de manière flottante à l'intérieur du boîtier (2) et un tambour rotatif (6) permettant de loger le linge à laver et/ou sécher, et qui est fixé de manière axialement rotative à l'intérieur de la cuve de lavage (3).
  9. Machine à laver et sécher le linge selon les revendications 7 et 8, dans laquelle ladite machine à laver et sécher le linge (1) comprend également un circuit de recirculation et de purge d'eau de lavage (12) permettant d'aspirer l'eau de lavage depuis le fond de la cuve de lavage (3) et de ramener ladite eau dans le tambour rotatif (6), ou alternativement, d'amener ladite eau dans une conduite d'échappement externe d'eaux usées, ledit circuit de circulation d'eau (26) étant intégré dans ledit circuit de recirculation et de purge de lavage (12).
  10. Machine à laver et sécher le linge selon l'une quelconque des revendications précédentes, dans laquelle lesdits moyens de circulation de fluide frigorigène bidirectionnels (22, 27, 28) comprennent :
    - des moyens de compression de fluide frigorigène (22) permettant de comprimer un fluide frigorigène gazeux de sorte que la pression et la température du fluide frigorigène sont bien plus élevées au refoulement qu'à l'admission des moyens de compression de fluide frigorigène (22) ;
    - un dispositif de détente de fluide frigorigène (27) qui soumet le fluide frigorigène s'écoulant du premier échangeur de chaleur à fluide frigorigène (23) au second échangeur de chaleur à fluide frigorigène (24) ou vice versa, à une détente rapide pour réduire la pression et la température dudit fluide frigorigène ; et
    - un distributeur hydraulique (28) qui raccorde les moyens de compression de fluide frigorigène (22) à la fois au premier (23) et au second (24) échangeur de chaleur à fluide frigorigène, et est structuré pour placer sélectivement le refoulement des moyens de compression de fluide frigorigène (22) en communication avec le premier (23) ou, de manière alternée, le second (24) échangeur de chaleur à fluide frigorigène, et l'admission des moyens de compression de fluide frigorigène (22) en communication avec l'autre échangeur de chaleur à fluide frigorigène (23, 24) pour sélectionner, sur commande, l'écoulement du fluide frigorigène le long du premier échangeur de chaleur à fluide frigorigène (23), du dispositif de détente de fluide frigorigène (27) et du second échangeur de chaleur à fluide frigorigène (24).
EP20080169589 2008-11-21 2008-11-21 Machine à laver et sécher le linge Not-in-force EP2189568B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20080169589 EP2189568B1 (fr) 2008-11-21 2008-11-21 Machine à laver et sécher le linge
AT08169589T ATE540154T1 (de) 2008-11-21 2008-11-21 Waschmaschine und trockner
PCT/EP2009/006394 WO2010057547A1 (fr) 2008-11-21 2009-09-03 Machine à laver et à sécher le linge
CN2009801532154A CN102272373B (zh) 2008-11-21 2009-09-03 洗衣、干衣机
US13/130,334 US20120272689A1 (en) 2008-11-21 2009-09-03 Laundry Washing and Drying Machine
BRPI0920911A BRPI0920911A2 (pt) 2008-11-21 2009-09-03 máquina de lavagem e secagem de roupas.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080169589 EP2189568B1 (fr) 2008-11-21 2008-11-21 Machine à laver et sécher le linge

Publications (2)

Publication Number Publication Date
EP2189568A1 EP2189568A1 (fr) 2010-05-26
EP2189568B1 true EP2189568B1 (fr) 2012-01-04

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Application Number Title Priority Date Filing Date
EP20080169589 Not-in-force EP2189568B1 (fr) 2008-11-21 2008-11-21 Machine à laver et sécher le linge

Country Status (6)

Country Link
US (1) US20120272689A1 (fr)
EP (1) EP2189568B1 (fr)
CN (1) CN102272373B (fr)
AT (1) ATE540154T1 (fr)
BR (1) BRPI0920911A2 (fr)
WO (1) WO2010057547A1 (fr)

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DE102015201864A1 (de) * 2015-02-03 2016-08-04 BSH Hausgeräte GmbH Haushaltsgerät zum Behandeln von Wäsche und Verfahren zum Betreiben eines solchen Haushaltsgeräts

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US8353114B2 (en) 2010-07-26 2013-01-15 General Electric Company Apparatus and method for refrigeration cycle with auxiliary heating
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US8533975B2 (en) * 2010-10-29 2013-09-17 General Electric Company Apparatus and method for refrigeration cycle elevation by modification of cycle start condition
EP2460926A1 (fr) * 2010-12-02 2012-06-06 Electrolux Home Products Corporation N.V. Séchoir à pompe thermique
ITTO20101018A1 (it) * 2010-12-20 2012-06-21 Indesit Co Spa Macchina per l'asciugatura di biancheria ad uso domestico
DE102011078922A1 (de) * 2011-07-11 2013-01-17 BSH Bosch und Siemens Hausgeräte GmbH Abluft-Wäschetrocknung mit Zusatzheizung und Wärmetauscheraggregat
US8490439B2 (en) 2011-09-30 2013-07-23 Electrolux Home Products, Inc. Water recirculation and drum rotation control in a laundry washer
EP2644768A1 (fr) * 2012-03-30 2013-10-02 BSH Electrodomésticos España, S.A. Pompe à chaleur pour appareil de traitement de linge
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CN105463762B (zh) * 2014-08-08 2019-07-23 博西华电器（江苏）有限公司 衣物处理设备及其控制方法
KR102364673B1 (ko) * 2014-10-28 2022-02-18 엘지전자 주식회사 의류처리장치 및 그 제어방법
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DE102015201864A1 (de) * 2015-02-03 2016-08-04 BSH Hausgeräte GmbH Haushaltsgerät zum Behandeln von Wäsche und Verfahren zum Betreiben eines solchen Haushaltsgeräts

Also Published As

Publication number Publication date
ATE540154T1 (de) 2012-01-15
WO2010057547A1 (fr) 2010-05-27
EP2189568A1 (fr) 2010-05-26
CN102272373A (zh) 2011-12-07
US20120272689A1 (en) 2012-11-01
BRPI0920911A2 (pt) 2015-12-29
CN102272373B (zh) 2013-03-27

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