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
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/28—Air properties
  • D06F2103/36—Flow or velocity
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/38—Time, e.g. duration
• • 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
  • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
  • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/16—Air properties
  • D06F2105/24—Flow or velocity
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/26—Heat pumps
• • 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
  • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
  • D06F2105/32—Air flow control means
• • 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
  • D06F58/32—Control of operations performed in domestic laundry dryers 
  • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
  • D06F58/46—Control of the operating time
• • 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
  • D06F58/32—Control of operations performed in domestic laundry dryers 
  • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
  • D06F58/48—Control of the energy consumption
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

• the present invention relates to a heat pump laundry dryer.
• the heat pump used for drying the laundry is composed of flow tubes through which the refrigerant circulates, a compressor that provides the circulation of the refrigerant by pressurizing it, an evaporator and a condenser, and the drying process is performed by passing the processing air over the laundry.
• the condenser located in the heat pump functions as a heater and the evaporator functions as a condenser.
• the processing air is heated while passing through the condenser, delivered onto the laundry as being heated and after dehumidifying the laundry, leaves its humidity while passing over the evaporator.
• various embodiments are performed in order to decrease energy consumption. For example, the compressor speed is decreased/increased, the operational parameters of the condenser and the evaporator, which are the other components of the heat pump, are changed; however, the desired improvement in the energy consumption cannot be attained.
• the aim of the present invention is the realization of a laundry dryer which comprises a heat pump and wherein energy is saved by decreasing the time of drying process.
• the laundry dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a drum, an air circulation duct and a heat pump composed of a compressor, an evaporator and a condenser, and the processing air that is dehumidified in the evaporator and heated in the condenser is sent onto the laundry in the drum through the air circulation duct by means of the processing air fan.
• the control unit regulating the drying processes stops the operation of the heat pump at the end of the drying process, but does not stop the operation of the processing air fan and the laundry in the drum is provided to be aired.
• dry air is received into the air circulation duct from the outer environment by means of an opening on the air circulation duct and a shutter that is opened/closed on the opening.
• the shutter is opened/closed on the opening by being actuated by a driving mechanism with a thermo-actuator, solenoid valve, electric motor, etc.
• the shutter is located at the upper side of the air circulation duct and opens towards the gap between the air circulation duct and the drum.
• the shutter is located at the lower side of the air circulation duct and opens towards the gap between the air circulation duct and the exterior body base.
• the environment air heated by the compressor is provided to be received into the air circulation duct.
• the laundry dryer comprises a cooling fan that provides the compressor to be cooled with the outer environment air.
• the environment air which cools the compressor by means of the cooling fan and hence which is heated, is guided to the air circulation duct by means of the shutter opening towards the gap wherein the compressor is situated.
• the driving mechanism actuates the shutter by means of a crank connected to the center of the shutter.
• a sealing element is placed onto the shutter or at the edges of the opening.
• the processing air fan is operated for some more time after the drying process is completed and thus, the laundry in the drum is aired and the temperature and humidity inside the drum are reduced.
• the operation time of the heat pump and hence the total drying time are shortened and energy saving is provided.
• Figure 1 - is the schematic view of a laundry dryer.
• PA Processing air providing the drying of the laundry
• the laundry dryer (1) comprises a body (15), a drum (2) wherein the laundry to be dried is placed, an air circulation duct (3) providing the dry and hot processing air (PA) to be sent onto the laundry in the drum (2), a processing air fan (4) located in the air circulation duct (3), a heat pump (8) having a compressor (5) wherein the refrigerant cycle is realized and which provides the refrigerant to be sucked and compressed, an evaporator (6) which provides the processing air (PA) to be dehumidified and a condenser (7) which provides the processing air (PA) to be heated, and a control unit (9) regulating the drying process.
• a body 15
• a drum (2) wherein the laundry to be dried is placed
• an air circulation duct (3) providing the dry and hot processing air (PA) to be sent onto the laundry in the drum (2)
• a processing air fan (4) located in the air circulation duct (3)
• a heat pump (8) having a compressor (5) wherein the refrigerant cycle is realized and which provides
• the laundry dryer (1) of the present invention comprises a control unit (9) which continues the operation of the processing air fan (4) for some more time after stopping the operation of the heat pump (8) at the end of the drying process.
• the compressor (5) is stopped by the control unit (9) at the end of the drying process and therefore, the evaporator (6) and the condenser (7), to which the refrigerant is sent by the compressor (5), are also stopped.
• the processing air fan (4) is continued to be operated by the control unit (9) for some more time, for example for 5 – 10 minutes.
• the laundry in the drum (2) is aired, and the temperature and the amount of humidity inside the drum (2) are reduced.
• the laundry dryer (1) comprises an opening (16) arranged on the side wall of the air circulation duct (3) and a shutter (10) which is opened/closed on the opening (16), which is kept in the closed position and does not allow entry of air into the air circulation duct (3) from the outside while the heat pump (8) operates during the drying process and which allows suction of air into the air circulation duct (3) from the environment inside the body (15) by being brought to the open position after the operation of the heat pump (8) is stopped by the control unit (9).
• the shutter (10) When opened at the end of the drying process, the shutter (10) provides the dry and hot environment air inside the body (15) to be mixed with the processing air (PA) sent to the drum (2) by the processing air fan (4) in the air circulation duct (3) and the laundry drying efficiency of the processing air (PA), which passes through the evaporator (6) and the condenser (7) without the application of drying and heating processes, is increased.
• the shutter (10) is located before the processing air fan (4) on the air ventilation duct (3) and the suction effect of the processing air fan (4) is utilized for sucking air into the air ventilation duct (3) from the outside.
• the shutter (10) is located at the upper side of the air circulation duct (3) and opens towards the gap (B1) between the air circulation duct (3) and the drum (2) at the end of the drying process.
• the heat pump (8) is stopped by the control unit (9) at the end of the drying process, the shutter (10) is opened and the environment air heated in the gap (B1) with the effect of the waste heat of the drum (2) is provided to enter the air circulation duct (3).
• the processing air (PA) is heated by the environment air received from the outside and its capacity of dehumidifying the laundry is increased.
• the shutter (10) is located at the lower side of the air circulation duct (3) and opens towards the gap (B2) which is between the air circulation duct (3) and the body (15) base and wherein the compressor (5) is situated at the end of the drying process, and the environment air heated with the effect of the waste heat of the compressor (5) is provided to be mixed with the processing air (PA) in the air circulation duct (3).
• the laundry dryer (1) comprises a cooling fan (11) which sucks air from the environment outside the body (15), which provides the air to be passed over the compressor (5) and to be sent into the gap (B2) wherein the compressor (5) is situated.
• the environment air in the gap (B2) is heated by the outer environment air passed over the compressor (5) and is guided to the air circulation duct (3) by means of the shutter (10) opening towards the gap (B2).
• the ratio of dry and hot air transmitted to the air circulation duct (3) by means of the cooling fan (11) is increased and the laundry drying efficiency of the processing air (PA) is increased.
• the laundry dryer (1) comprises a driving mechanism (12) which provides the shutter (10) to be opened/closed on the opening (A) in the air circulation duct (3).
• the driving mechanism (12) comprises a thermo-actuator.
• the driving mechanism (12) comprises a solenoid valve.
• the driving mechanism (12) comprises an electric motor.
• the driving mechanism (12) comprises a crank (13) which provides the shutter (10) to close the opening (16) in a balanced manner by pressing onto the center of the shutter (10).
• the laundry dryer (1) comprises a sealing element (14) which is placed onto the shutter (10) or at the edges of the opening (16), providing the shutter (10) to close the opening (16) in a leak-proof manner.
• the humidity remaining on the laundry in the drum (2) is removed by the control unit (9) operating the processing air fan (4) for some more time at the end of the drying process.
• the operation time of the heat pump (8) is shortened and energy saving is provided.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=48520933

Family Applications (1)

Country Status (2)

Families Citing this family (6)

Family Cites Families (8)

• 2013
  • 2013-05-17 WO PCT/EP2013/060270 patent/WO2013182400A1/en active Application Filing
  • 2013-05-17 EP EP13725120.3A patent/EP2855758A1/de not_active Withdrawn

Non-Patent Citations (1)

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