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
  • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
  • D06F58/04—Details 
  • D06F58/08—Driving 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
  • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
  • D06F58/04—Details 
  • D06F58/06—Mountings for the rotating drums
• • 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 invention relates to a condensation dryer with a drying chamber for objects to be dried, a process air circuit to which a heater for heating the
• Process air is associated with a first blower, with which the heated
• Process air on the objects to be dried is feasible, a heat pump circuit with an evaporator, a compressor and a condenser. Furthermore, the invention also relates to a method for operating such a condensation dryer.
• a tumble dryer whose operation is based on the condensation of the evaporated by means of warm process air moisture of the laundry from the process air discharged from the laundry - a so-called condensation dryer - does not need a hose for removing the moisture-laden process air and is very popular because it is in a in a flat-lying bathroom or a laundry room of a larger residential complex can be used.
• process air In a condensation dryer air (so-called process air) is passed through a fan via a heater in a wet laundry containing drum as a drying chamber. The hot air absorbs moisture from the laundry to be dried. After passing through the drum, the now moist process air is directed into a heat exchanger, which is usually preceded by a lint filter.
• the moist process air is cooled, for example by a separately guided cooling air flow, so that the moisture contained in the process air condenses as water.
• the condensed water is then generally in collected a suitable container for later disposal, and fed the cooled and dried air again to the heater and then the drum.
• the cooling of the warm, moisture-laden process air essentially takes place in a first heat exchanger of the heat pump, in particular an evaporator, where the heat transferred is used to evaporate a refrigerant used in the heat pump.
• Such vaporized due to the heating refrigerant is fed via a compressor to a second heat exchanger, in the given case and hereinafter also called “condenser", the heat pump, where due to the condensation of the gaseous refrigerant heat is released, which in turn for heating the process air before entering the
• the liquefied refrigerant passes back to the evaporator through a restrictor, which reduces its pressure, to evaporate therefrom, re-absorbing heat from the process air
• a compressor heat pump in the condensation dryer relatively high temperatures can occur in the condenser which, as a result of the process, cause the compressor to be switched off and / or the efficiency of the heat pump worsens. This is even more pronounced if the compressor is supported by an additional, conventional per se heater in the process air circuit in order to achieve a faster and / or higher heating of the process air and thus shorter drying times.
• a tumble dryer with a heat pump in which a motor is used to drive a drum of the tumble dryer, with which motor also a first fan is connected, which circulates a dry air, and a second ventilator is connected, to cool a compressor of the heat pump.
• a first aspect of the invention relates to a condensation dryer with a drying chamber for objects to be dried, a process air circuit, which is associated with a heater for heating the process air, with a first fan, with which the heated process air on the objects to be dried is feasible, and a heat pump cycle with an evaporator, a compressor and a condenser.
• the condensation dryer comprises a second fan and an air-to-air heat exchanger through which the process air can flow, by means of which second fan a cooling air flow for the air-air heat exchanger and the compressor can be generated.
• the second blower thus achieves multifunctional cooling of separate components of the condensation dryer.
• the intake fan is assigned to the second fan, which has at least one adjacent to and oriented in the direction of the compressor opening.
• the intake tract may have one or more flow channels through which cooling air can be sucked in by the second blower.
• a flow can be generated by the suction of the cooling air at the compressor, which contributes to its cooling.
• the intake tract has an intake bypass, which is oriented with its opening adjacent to and in the direction of the compressor.
• the intake tract thus comprises at least two
• Flow channels a main channel and the intake bypass, through which cooling air can be sucked.
• the intake bypass is arranged such that a cooling air flow is generated by the suction of the cooling air through this intake bypass on the compressor.
• the intake tract comprises only one main channel, which has on a channel wall one or more openings, which are oriented adjacent to and in the direction of the compressor. Also, this can be generated by the suction of the cooling air through these openings formed in the channel wall, an air flow to the compressor, which contributes to the cooling of this.
• the intake tract can be made relatively compact, whereby a space-saving arrangement is made possible.
• the compressor facing the opening of the intake can be opened and closed via a controllable flap. As a result, depending on the situation and demand, it is possible to generate a cooling air flow in the area of the compressor.
• the second fan associated with an outlet tract which comprises an outlet bypass, the opening of which is oriented in the direction of the compressor.
• an outlet tract which comprises an outlet bypass
• the opening of which is oriented in the direction of the compressor.
• the outlet bypass is associated with a diffuser of the outlet tract.
• the outlet tract comprises a main channel, which opens into the air-air heat exchanger.
• an outlet bypass is applied in the diffuser of the second blower, which blows directly to the compressor.
• the cooling air flow generated by the second fan and guided through the air-air heat exchanger after leaving the air-air heat exchanger is at least partially feasible via an air guide to the compressor and thus the compressor can be cooled.
• the spoiler device may have an air guide plate, which is arranged on the air-air heat exchanger.
• Another aspect of the invention relates to a condensation dryer with a drying chamber for objects to be dried, a process air circuit, which is associated with a heater for heating the process air, with a first fan, with which the heated process air on the objects to be dried is feasible, and a heat pump cycle with an evaporator, a compressor and a condenser.
• the drying chamber is rotatably mounted and supported by at least one roller.
• Another fan which is designed to cool the compressor and arranged in the condensation dryer, is coupled to the roller of the drying chamber and driven by this coupling depending on the movement of the roller.
• the further fan is directly connected to the roller or bears against the roller and is thereby driven.
• the further fan is coupled via a belt with the roller.
• the invention relates to a method for operating a condensation dryer with a drying chamber for objects to be dried, a process air circuit in which a heating or heat or process air is and the heated process air is guided by means of a first blower over the objects to be dried, and a Heat pump circuit with an evaporator, a compressor and a condenser.
• a cooling air flow is generated, with which an air-air heat exchanger and additionally a compressor are cooled.
• an effective utilization of existing resources takes place.
• the overheating of the compressor and the air-to-air heat exchanger can be avoided and the efficiency of the compressor heat pump can be improved.
• Another aspect of the invention relates to a method for operating a condensation dryer with a drying chamber for objects to be dried, a process air circuit in which a heater for heating the process air is and the heated process air is guided by means of a first blower over the objects to be dried, and a heat pump cycle with an evaporator, a compressor and a condenser.
• the drying chamber is roller bearing, and another, designed for cooling the compressor fan is driven by coupling with the roller bearing. Also by this method, the advantages mentioned are achieved.
• Fig. 1 is a vertical sectional view through a condensation dryer
• 2 is a schematic representation of the process air circuit and the heat pump circuit according to a first embodiment of a condensation dryer according to FIG. 1;
• Fig. 3 is a schematic representation of the process air circuit and the heat pump circuit for a second embodiment of the
• Fig. 5 is a schematic representation of the process air circuit and the heat pump circuit for a fourth embodiment of the condensation dryer.
• a vertically cut condensation dryer 1 is shown, which is hereinafter referred to as dryer 1.
• the illustrated dryer 1 has a drum 3 rotatable about a horizontal axis, which is the drying chamber 3. Within the drum 3 are drivers 4 for moving laundry, while the drum 3 rotates, attached.
• Process air is conducted by means of a first blower 19 via a heater 18 through the drum 3, an air-air heat exchanger 1 1, 12 and a heat pump 13, 14, 15 in an air channel 2 in the closed circuit 2 (process air circuit 2). After passage through the drum 3, the moist, warm process air is cooled and reheated after condensation of moisture contained in the process air.
• the somewhat cooled process air is passed to an evaporator 13 of the heat pump 13, 14, 15, where they further removed heat while condensing out further moisture, and corresponding condensate is fed to the condensate tank 21, is.
• the refrigerant vaporized in the evaporator 13 is conducted via a compressor 14 to a condenser 15.
• the condenser 15 the compressed refrigerant liquefies under heat to the process air.
• the now in liquid form refrigerant is then passed to a throttle valve 17 and passed through this again to the evaporator 13, whereby the refrigerant circuit is closed.
• the cooling air is taken from the room air and, after passing through the air-air heat exchanger 1 1, 12 again supplied to the room air.
• the air circulation through the air-air heat exchanger 1 1, 12 is generated by a second fan 20.
• the drum 3 is mounted in the embodiment shown in Fig. 1 at the rear bottom by means of a pivot bearing and front by means of a bearing plate 7, the drum 3 rests with a brim on a sliding strip 8 on the bearing plate 7 and is held at the front end.
• the control of the condensation dryer via a control device 10, which can be controlled by the user via an operating unit 9.
• Fig. 1 it is shown in Fig. 1 that the drum 3 is mounted at least in the lower region on rollers 16 which are associated with a roller bearing.
• the second blower 20 is arranged so that a cooling air flow generated by the blower 20 for both the air-to-air heat exchanger 11, 12 and for the Compressor 14 is used and thus cooling of the air-to-air heat exchanger 1 1, 12 and the compressor 14 is ensured.
• an intake tract 22 and an exhaust tract 23 or outlet tract 23 are assigned to it.
• the intake tract 22 and / or the outlet tract 23 can be designed individually in order to be able to achieve such multi-component cooling with the second blower 20.
• FIG. 2 shows a schematic representation of the process air circuit and the heat pump circuit for a first embodiment of the dryer 1.
• the intake duct 22 comprises a flow channel 22, for example with a pipe 22, which opens into the environment.
• This flow channel 22 is at least partially disposed immediately adjacent to the compressor 14 and may according to a first embodiment in a wall of the flow channel 22 have at least one opening 22a. This can be formed in particular in a main channel 25.
• air is thus sucked in via this intake tract 22, whereby both ambient air is sucked in via a rear opening 22b and at the same time air is drawn in via the at least one opening 22a.
• the intake tract 22 comprises, in addition to the main channel 25, an intake bypass 24 branching off from it.
• This may also be a tubular flow channel 24, which is adjacent to a front opening 24 a and oriented in the direction of the compressor 14. This also takes place during operation of the second blower 20, a suction via this intake bypass 24, whereby an air flow is generated at the compressor 14, through which the compressor 14 can be cooled.
• the opening 22a for example, it is preferably arranged at a distance, as shown symbolically by the opening 24a.
• Both the opening 22a and the opening 24a can be opened and closed depending on the situation by means of electronically controllable flaps (not shown).
• FIG. 3 is a schematic representation of the process air circuit 2 and the heat pump circuit for a second embodiment of the dryer 1 is shown.
• at least one opening 27a is formed in the outlet tract 23, which comprises a main channel 27 in the form of a diffuser 27.
• the air flow generated in this outlet tract 23 by the second blower 20 can then emerge at least partially from this opening 27 a and cool the compressor 14.
• the opening 27a is disposed adjacent and in the direction of the compressor 14.
• the outlet tract 23 comprises, in addition to the main channel 27, an outlet bypass 26 branching off thereof, which has a front opening 26a which is oriented adjacent to and in the direction of the compressor 14.
• the cooling air flow generated by the second fan 20 in the outlet tract 23 is then proportionally passed through this outlet bypass 26 and serves as a cooling air flow for the compressor 14th
• FIG. 4 shows a schematic representation of the process air circuit and of the heat pump circuit 13, 14, 15 for a third embodiment of the dryer 1.
• an air guiding device 28 is provided, which, viewed in the flow direction, is arranged at the outlet of the air-air heat exchanger 11, 12.
• the air guiding device 28 is shown in FIG. 4 as well as the embodiments explained in FIGS. 2 and 3 by way of example only and sketched and may be a baffle in a relatively simple embodiment. This is so arranged and shaped, that the air flow exiting from the air-air heat exchanger 11, 12 is proportionally directed towards the compressor 14 and thus a cooling of the compressor 14 is achieved by means of this redirected air flow.
• Fig. 5 is a schematic representation of the process air circuit 2 and the heat pump circuit 13, 14, 15 for a further embodiment of the dryer 1 is shown.
• this dryer 1 comprises at least one further fan 29, which is arranged adjacent to the compressor 14 and is provided for cooling the compressor 14.
• This further fan 29 is coupled to the drive with the roller bearing, comprising the rollers 16, the drum 3, coupled. It can be provided that this further fan 29 rests directly on one of the rollers 16 and is thereby driven by the movement of the roller 16.
• the further fan 29 is coupled via a belt 30 with the roller 16 to the drive.
• the dryer 1 comprises as an advantageous development, the air-to-air heat exchanger 11, 12 and the second fan 20. This is in the embodiment of the dryer 1 according to FIG. 5, but only optional, still advantageous.
• the further fan 29 is in such an embodiment then virtually a third fan 29.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Detail Structures Of Washing Machines And Dryers (AREA)
• Drying Of Solid Materials (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=39591917

Family Applications (1)

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Cited By (1)

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• 2007
  • 2007-03-23 DE DE102007013997A patent/DE102007013997A1/de not_active Withdrawn
• 2008
  • 2008-03-03 DE DE502008001832T patent/DE502008001832D1/de active Active
  • 2008-03-03 AT AT08717322T patent/ATE488634T1/de active
  • 2008-03-03 EP EP08717322A patent/EP2140061B1/fr not_active Not-in-force
  • 2008-03-03 WO PCT/EP2008/052559 patent/WO2008116726A2/fr not_active Ceased

Non-Patent Citations (1)

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