Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L15/00—Washing or rinsing machines for crockery or tableware
  • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
  • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
  • A47L15/0034—Drying phases, including dripping-off phases
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L15/00—Washing or rinsing machines for crockery or tableware
  • A47L15/42—Details
  • A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L15/00—Washing or rinsing machines for crockery or tableware
  • A47L15/42—Details
  • A47L15/48—Drying arrangements
  • A47L15/483—Drying arrangements by using condensers
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
  • A47L2401/18—Air temperature
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
  • A47L2401/19—Air humidity
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
  • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
  • A47L2501/36—Other output
• • 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
  • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
  • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
• • 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 dishwasher comprising a heat pump.
• heat pumps are used for decreasing the energy consumption and improve the drying performance.
• the heat pump is composed of the compressor, the condenser, the throttle valve and the evaporator elements.
• the components of the heat pump are connected via a pipe line and the heat pump operates by means of the cycle fluid in the line.
• the condenser is a tube bundle having a hot surface and enables the water to be heated by being positioned in the washing liquid of the dishwasher.
• the evaporator has a cold surface and is positioned so as to contact the ambient air. The evaporator absorbs heat from the environment and provides heat transfer to the compressor and the condenser.
• the compressor In heat pump systems, for heating the water, the compressor is operated to enable the condenser to heat the water, and the evaporator is enabled to absorb heat from the environment to support the condenser that heats the water.
• the same heat pump is needed to be also used for drying. In such cases, since the same heat exchangers cannot be used in direct cooperation with the drying duct, an additional condenser or evaporator may be needed for the drying duct.
• the heat pump used completes the thermodynamic cycle thereof by means of the compressor, the condenser, the evaporator, the fan and the capillary.
• the heat pump takes heat from the ambient air into the machine and discharges waste heat in the machine to the ambient air.
• the air which is passed over the evaporator and cooled, is then passed over the condenser, thus enabling the waste heat on the condenser to be discharged and providing optimized operation of the system.
• the fan provides the air circulation. In standard embodiments, an additional fan is used in dishwashers for the drying process.
• a dishwasher comprising a heat pump that enables the stored heat to be used in the drying step since the heat exchanger is placed in a housing.
• the aim of the present invention is the realization of a dishwasher wherein the fan in the heat pump group is used in the drying step and thus the drying performance is improved.
• the dishwasher realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a body; a washing tub that is disposed in the body and wherein the dishes to be washed are placed; a modular heat pump system which is adjacent to the washing tub, and a drying duct which enables the air used in the drying step to be dehumidified.
• the drying duct in the dishwasher of the present invention comprises an evaporator wherein the humid and hot air drawn from inside the machine is condensed; a first air duct condenser for heating the dehumidified and cooled air with the relative humidity thereof being decreased; a fan which delivers the heated air into the machine; and a second air duct condenser which increases the temperature of said hot air with low humidity so as to improve the drying performance thereof.
• the dishwasher of the present invention comprises a modular heat pump system having the drying duct, a condenser with a water tank which heats the washing water to deliver the same to the receptacle, and a compressor which performs the refrigerant cycle between the evaporator and the condenser.
• the dishwasher comprises the water tank which provides the formation of a cold surface or a hot surface by means of the water therein which is heated or cooled.
• the drying air can be dehumidified more quickly.
• the dishwasher of the present invention comprising the heat pump enables the fan, which is used for the continuity of the thermodynamic cycle, to be used in the drying step of the dishwasher.
• the dishwasher uses the fan in the heat pump group in the drying step without using an additional fan. Consequently, energy efficiency is provided.
• the drying performance is improved by using the air at the outlet of the evaporator or the condenser.
• the dishwasher provides that preferably the condenser output is circulated in the dishwasher without requiring the reheating the air with high temperature and low relative humidity, thus increasing the drying performance.
• the air discharged from the condenser is delivered into the machine preferably by means of a heat pump fan positioned at the level of the drying duct, and thus air circulation for the drying step is provided.
• valve disposed on the drying duct enables the duct to be opened and closed at the beginning of the drying step.
• the air used in the drying step can be the air at the outlet of the condenser or the ambient air or the air leaving the evaporator.
• the humidity sensor, the temperature sensor, etc. disposed in the receptacle, the relative humidity, temperature, etc. of the air are controlled, thus determining the most suitable air for high drying performance.
• the ambient air in cases the relative humidity detected by the sensor in the machine is higher than the detected relative humidity of the ambient air, the ambient air can be circulated in the system by the fan for the drying process.
• the air at the outlet of the condenser can be delivered to the system to continue the drying process. The drying process continues until the relative humidity in the machine decreases to a certain level.
• the heat pump drying system is used together with liquid or solid desiccants such as zeolite, etc.
• the desiccants placed into the air intake duct of the dishwasher decrease the relative humidity of the air delivered into the machine for the drying process, thus accelerating the drying process and increasing the efficiency.
• the surface wetness of the dishes are evaluated by measuring the parameters of temperature, time and humidity at certain intervals, and the drying process is performed according to an algorithm. Consequently, when the heat pump is not operated, only the system controlling the fan and the valves on the air duct is operated to carry out the drying process.
• variable speed fan is used to perform the drying process more quickly while controlling the energy.
• the flow rate of the fan can be increased depending on the algorithm if the drying process is needed to be performed more quickly. Consequently, in cases of low relative humidity, forced convection can be carried out more effectively.
• Figure 1 - is the perspective view of the dishwasher.
• Figure 2 - is the perspective view of the modular heat pump system.
• Figure 3 - is the schematic view of the dishwasher.
• the dishwasher (1) comprises a body (2), a washing tub (3) which is disposed in the body (2) and wherein the washing process is performed, and a modular heat pump system (4) which is adjacent to the washing tub (3) and which has a drying duct (12) therein ( Figure 1, Figure 2).
• the heat pump dishwasher (1) comprises the drying duct (12) having an evaporator (7) wherein the humid and hot air drawn from inside the machine is condensed, a first air duct condenser (9) for heating the dehumidified and cooled air with the relative humidity thereof being decreased, a fan (8) which delivers the heated air into the machine, and a second air duct condenser (10) which increases the temperature of said hot air with low humidity so as to improve the drying performance thereof ( Figure 3).
• the dishwasher (1) enables the fan (8), which is positioned in the drying duct (12) for the continuity of the thermodynamic cycle, to be used in the drying step.
• the air at the outlet of the evaporator (7), of the first air duct condenser (9) or of the second air duct condenser (10) is used.
• a valve (13) disposed on the drying duct (12) enables the duct (12) to be opened and closed at the beginning of the drying step.
• the relative humidity, temperature, etc. of the air are controlled, thus determining the most suitable air for high drying performance, and in cases the detected relative humidity is higher than the detected relative humidity of the ambient air, the ambient air can be circulated in the system by means of the heat pump fan (6).
• liquid or solid desiccants such as zeolite, etc. can be placed into the drying duct (12).
• the surface wetness of the dishes are evaluated by measuring the parameters of temperature, time and humidity at certain intervals by the sensors (14), and the drying process is performed according to an algorithm.

Landscapes

• Washing And Drying Of Tableware (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67513523

Family Applications (1)

Country Status (2)

Family Cites Families (6)

• 2019
  • 2019-07-30 EP EP19748527.9A patent/EP3852597A1/de not_active Withdrawn
  • 2019-07-30 WO PCT/EP2019/070531 patent/WO2020057829A1/en unknown

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