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
  • D06F58/32—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
  • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
• • 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
  • D06F2103/42—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to filters or 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
  • D06F2105/58—Indications or alarms to the control system or to the user
• • 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
  • D06F2105/58—Indications or alarms to the control system or to the user
  • D06F2105/60—Audible signals
• • 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
  • D06F2105/62—Stopping or disabling machine operation
• • 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
  • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
  • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
  • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens
• • 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 
  • D06F58/22—Lint collecting arrangements

Definitions

• the present invention relates to a laundry dryer comprising a lint filter.
• the lints etc. that break off from the laundry mix into the processing air of the machine.
• the lints that break off may accumulate on components like the propeller or the fan due to the air flow.
• lint filters are used on the processing air duct and the lints that break off from the laundry during the drying process and mix into the processing air are accumulated on the filter.
• the lint filters can be clogged in the course of time and cause the drying performance to decrease and energy consumption to increase. The filters that are not cleaned timely result in loss of energy by decreasing the drying performance.
• a laundry dryer that detects the clogging degree of the lint filter by the differential pressure.
• the aim of the present invention is the realization of a laundry dryer wherein the clogging degree of the lint filter can be measured effectively.
• 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 filter enabling the lints that break off from the laundry to be retained, at least two plates disposed on the filter, a capacitance detection unit measuring the capacitance value between the plates, and a control unit that calculates the clogging degree of the filter by analyzing the values received from the capacitance detection unit.
• the user is alerted by means of an indicator if the lint filter is clogged and not cleaned at the start of the drying process and the control unit delays the drying process until the lint filter is cleaned.
• the users who forget to clean the lint filter are alerted at the start of the drying process and are enabled to clean the lint filter.
• the user is alerted audibly and/or visually to clean the filter if the lint filter is clogged during the drying process and needs to be cleaned.
• the drying process is continued without the drying performance decreasing by cleaning the lint filter during the drying process.
• an indicator having audible and/or visual alerter, that becomes active in situations when the filter is clogged and needs to be cleaned. For example, a light on the indicator is turned on when the filter is clogged and the user understands the filter has to be cleaned upon seeing the light. Thus, the user does not have to control and clean the filter at the end of each drying process.
• the indicator there is a light source on the indicator, the brightness of which changes depending on the amount of lint collected on the lint filter.
• the light source becomes less bright when the filter is slightly clogged and brightness increases as the filter clogging degree increases.
• the user is informed about the amount of lint collected on the filter without dislodging the filter.
• an indicator is provided that is composed of at least two light sources.
• the number of light sources becoming active increases depending on the clogging degree of the filter.
• the user can monitor the clogging degree of the filter immediately.
• a V-shaped filter having two panels facing each other is used.
• the plates connected to the capacitance detection unit are placed so as to face each other and each one is disposed on one panel.
• the present invention can be used independently of the lint filter type.
• connection means that is disposed on the filter, which provides the electrical connection between the plates and the capacitance detection unit, and a housing disposed on the air duct wherein the connection means is seated.
• the capacitance detection unit detects that the lint filter is not mounted by measuring the capacitance. In this embodiment, whether or not the filter is mounted can be determined without using an additional sensor. When the lint filter is determined not to be mounted, the control unit gives the filter not in place warning by means of the indicators.
• the difference in dielectric coefficient between air and lint is utilized by placing plates on the filter in order to measure the filling rate of the lint filter. Furthermore, the clogging degree of the lint filter can be measured effectively by means of the capacitance detection unit, the control unit and the indicators, the user can monitor the state of the filter immediately. The user is enabled to clean the lint filter only when required and thus both energy is saved and the work load of the user is decreased.
• Figure 1 - is the sideways schematic view of a laundry dryer.
• Figure 2 - is the front schematic view of a laundry dryer.
• Figure 3 - is the schematic view of a V-shaped lint filter in an embodiment of the present invention.
• the laundry dryer (1) comprises a body (2), an air duct (3) that is arranged on the body (2) wherein the circulation of processing air (PA) that enables the laundry to be dried is performed and a lint filter (4) that is disposed inside the air duct (3) and that separates the lints in the processing air (PA).
• PA processing air
• the laundry dryer (1) of the present invention comprises at least two electrically conductive plates (6) disposed oppositely on the filter (4) and a capacitance detection unit (7) that is connected electrically to the plates (6) and that measures the capacitance value formed between the plates (6), and a control unit (8) that detects the amount of lint collected in the lint filter (4) depending on the data received from the capacitance detection unit (7) ( Figure 1, Figure 3).
• the capacitance value between the plates (6) changes depending on the amount of lint collected on the lint filter (4).
• the dielectric coefficient of the lints collected on the lint filter (4) is greater than the dielectric coefficient of air and hence the capacitance value between the plates (6) increases as lints are accumulated on the lint filter (4).
• the capacitance detection unit (7) measures the capacitance value formed between the plates (6) by applying high frequency alternative current to the plates (6) and transmits the value to the control unit (8).
• the control unit (8) decides whether or not the filter (4) is clogged and whether it needs to be cleaned with respect to the measured capacitance value.
• the laundry dryer (1) comprises indicators (9) disposed on the body (2). If the measured capacitance value is , above a threshold capacitance value (Cesik predetermined by the manufacturer, the control unit (8) decides that the filter (4) is clogged to the degree of affecting the drying performance and the user is alerted audibly and/or visually by means of the indicators (9) that the filter (4) is required to be cleaned ( Figure 1, Figure 2).
• a threshold capacitance value (Cesik predetermined by the manufacturer
• the brightness rate of the light sources on the indicator (9) changes depending on the amount of lint accumulated on the lint filter (4).
• the brightness of the light sources increases as the amount of lints accumulated on the lint filter (4) increases. Consequently, the user can monitor the amount of lint collected through the indicator (9) ( Figure 1, Figure 2).
• the indicator (9) is composed of at least two light sources.
• the number of light sources becoming active increases depending on the clogging degree of the filter (4).
• the clogging degree of the filter (4) is shown by dividing into five units, if two of the five LEDs are emitting light, it means that the filter (4) is roughly 40 % clogged.
• the control unit (8) controls the clogging degree of the lint filter (4) by means of the capacitance detection unit (7) at the start of the drying process. If the measured capacitance value is above a threshold capacitance value (Cesik), the control unit (8) does not start the drying process and the user is alerted that the lint filter (4) needs to be cleaned by means of the indicator (9). The control unit (8) starts the drying process after the lint filter (4) is cleaned.
• a threshold capacitance value Cesik
• the control unit (8) if the lint filter (4) is clogged during the drying process, the control unit (8) enables the user to be alerted audibly and/or visually by means of the indicators (9).
• the lint filter (4) can be cleaned during the drying process and the drying process can be continued without the drying performance decreasing.
• the filter (4) comprises two panels (5) that retain the lints and which are positioned to face each other in a V shape.
• the plates (6) are placed on the inner surfaces of the panels (5) so as to face each other oppositely. ( Figure 3).
• a detachable lint filter (4) is used.
• the lauhdry dryer (1) comprises a connection means (11) that is disposed on the detachable lint filter (4) and that provides the electrical connection of the plates (6) with the capacitance detection unit (7) and a housing (10) arranged on the air duct (3), wherein the connection means (11) is seated.
• the connection means (1 1) are connected to the capacitance detection unit (7) by means of the housing (10) arranged on the air duct (3) ( Figure 1, Figure 2, Figure 3).
• the capacitance between the electrodes located on the housing (10) is measured when the capacitance detection unit (7) tries to measure the capacitance between the plates (6), and since the distance between the electrodes is longer than the distance between the plates (6), the measured capacitance value is much smaller than the capacitance value between the plates (6).
• the control unit (8) enables the user to be alerted by means of the indicators (9).
• the clogging rate of the lint filter (4) is detected effectively by means of a low cost capacitance detection unit (7) and the plates (6) disposed on the lint filter (4), similar to working principles of state of the art parallel plate capacitors.
• the user can control the clogging degree of the lint filter (4) continuously by means of the indicators (9) controlled by the control unit (8).
• the user is enabled to clean the lint filter (4) only when required by means of the control unit (8) and thus both energy is saved and also the work load of the user is decreased.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=51659996

Family Applications (1)

Country Status (4)

Family Cites Families (11)

• 2014
  • 2014-07-21 US US14/909,457 patent/US20160186373A1/en not_active Abandoned
  • 2014-07-21 EP EP14780648.3A patent/EP3027801A1/de not_active Withdrawn
  • 2014-07-21 WO PCT/TR2014/000265 patent/WO2015016795A1/en not_active Ceased
  • 2014-07-21 AU AU2014296880A patent/AU2014296880B2/en not_active Ceased

Non-Patent Citations (2)

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