EP3775359B1 - Séchoir à linge avec pompe à chaleur - Google Patents
Séchoir à linge avec pompe à chaleur Download PDFInfo
- Publication number
- EP3775359B1 EP3775359B1 EP19708999.8A EP19708999A EP3775359B1 EP 3775359 B1 EP3775359 B1 EP 3775359B1 EP 19708999 A EP19708999 A EP 19708999A EP 3775359 B1 EP3775359 B1 EP 3775359B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- detection means
- pump
- temperature
- enabling
- laundry dryer
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 description 10
- 230000005494 condensation Effects 0.000 description 10
- 238000001035 drying Methods 0.000 description 7
- 238000007791 dehumidification Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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
- D06F58/24—Condensing 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 dryer with heat pump.
- the drying air absorbing the humidity of the laundry items in the drum leaves its humidity in the evaporator and is introduced back in the drum after passing through the condenser.
- coolant cycle the coolant arrives with increased pressure and heat from the compressor to the condenser, is introduced into the evaporator after being throttled in the capillary tube and draws heat from the drying air in the evaporator in order to dehumidify it. Dehumidification occurs as the drying air reaches a certain temperature at the outlet of the drum, and the drying air cycle is thus completed.
- a cooling system continuously operates and conditions the same drying air, therefore the heat of the cooling system continually increases.
- the drying air heated at the condenser side is sent into the drum and the laundry items in the drum are heated by means of this air.
- the air exiting the drum passes through the evaporator and leaves its humidity.
- Condensed humidity is pumped to a water collection tank of the dryer by means of a pump.
- dehumidification of the laundry items and condensation do not begin with the initial activation of a laundry dryer. Dehumidification of the laundry items and condensation occur once the system reaches a stable regime.
- a pump operates in given periods starting from activation of a laundry dryer, regardless whether there is water in the system.
- a pumps activation in the beginning of the cycle implies that it operates also when the dehumidification process is not already active. Operating in dry environment causes the pump to have a shorter lifetime and to operate with more noise.
- EP2341180 discloses a heat pump system for a tumble dryer.
- the aim of the present invention is to realize a laundry dryer with heat pump in which the useful lifetime of the pump is prolonged and operation noise is mitigated by preventing pump operation in dry environment.
- a laundry dryer comprises a drum in which the laundry items desired to be dried are placed, an air circulation line enabling the recirculated air to circulate in a closed cycle, an evaporator enabling dehumidifying the humid process air discharged from the drum, a condenser enabling heating the dehumidified process air, a compressor and an expansion valve enabling coolant flow, and a pump enabling discharging the condensed water.
- the laundry dryer with heat pump of the invention comprises a first detection means measuring coolant temperature, a second detection means measuring process air temperature, and a control unit controlling operation of the pump according to data received from the first detection means and the second detection means.
- the temperatures of the coolant and the process air are determined by the control unit, and the control unit controls the state of condensation according to the determined temperature values and activates the pump when condensation occurs.
- control unit instantaneously controls operation of the pump according to information received from the first detection means and the second detection means.
- the pump is thus prevented from operating in dry environment, avoiding noisy operation of the laundry dryer.
- the laundry dryer comprises a control unit comparing the temperature difference between the temperature measured by the first detection means and the temperature measured by the second detection means and activating the pump if the measured temperature difference is higher than a limit temperature value and halting the pump if the measured temperature difference is lower than the limit temperature value. If the instant temperature difference between the temperature measured by the first detection means and the temperature measured by the second detection means is higher than a limit temperature value predetermined by the producer, the control unit determines occurrence of condensation and activates the pump. If the measured temperature difference is lower than the limit temperature value, the control unit enables halting the pump.
- Figure 1 is a schematic view of a laundry dryer with heat pump.
- the laundry dryer (1) with heat pump comprises
- the laundry dryer (1) with heat pump of the invention comprises a first detection means (9) measuring coolant temperature (T1), a second detection means (10) measuring process air temperature (T2), and a control unit (11) controlling operation of the pump (8) according to data received from the first detection means (9) and the second detection means (10).
- the control unit (11) determines beginning of condensation according to the measured temperature values (T1, T2), activates the pump (8) when condensation occurs and enables discharging the condensed water.
- control unit (11) instantaneously controls operation of the pump (8) according to information received from the first detection means (9) and the second detection means (10).
- the pump (8) is thus continually halted when there is no condensation.
- the laundry dryer (1) comprises a control unit (11) comparing the temperature difference between the temperature (T1) measured by the first detection means (9) and the temperature (T2) measured by the second detection means (10), and activating the pump (8) if the measured temperature difference is higher than a limit temperature value (Tlim) and halting the pump (8) if the measured temperature difference is lower than the limit temperature value (Tlim). If the instant temperature difference between the temperature (T1) measured by the first detection means (9) and the temperature (T2) measured by the second detection means (10) is higher than a limit temperature value (Tlim) predetermined by the producer, the control unit (11) determines occurrence of condensation and activates the pump (8). If the measured temperature difference is lower than the limit temperature value (Tlim), the control unit (11) enables halting the pump (8).
- the pump (8) is enabled to be activated only when condensation occurs, avoiding redundant operation of the pump (8), and the shortened operation duration of the pump (8) enables prolonging the useful lifetime of the pump (8) and reducing the noise levels of the laundry dryer with heat pump (1).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Claims (3)
- Un séchoir à linge (1) avec pompe à chaleur comprenant un tambour (2) dans lequel sont placés les articles de linge à sécher, une conduite de circulation d'air (3) permettant à l'air recyclé de circuler en cycle fermé, un évaporateur (4) permettant de déshumidifier l'air de traitement humide évacué du tambour (2), un condenseur (5) permettant de chauffer l'air de traitement déshumidifié, un compresseur (6) et un détendeur (7) permettant l'écoulement du liquide de refroidissement, et une pompe (8) permettant d'évacuer l'eau condensée, et une pompe (8) permettant d'évacuer l'eau condensée, caractérisée par un premier moyen de détection (9) mesurant la température du liquide de refroidissement (T1), un second moyen de détection (10) mesurant la température de l'air de traitement (T2), et par une unité de commande (11) contrôlant le fonctionnement de la pompe (8) en fonction des données reçues du premier moyen de détection (9) et du second moyen de détection (10).
- Un séchoir à linge (1) avec pompe à chaleur selon la déclaration 1, caractérisé par le fait que l'unité de commande (11) commande instantanément le fonctionnement de la pompe (8) en fonction des informations reçues des premiers moyens de détection (9) et des seconds moyens de détection (10).
- Un séchoir à linge (1) avec pompe à chaleur selon l'une quelconque des déclarations précédentes, caractérisé par le fait que l'unité de commande (11) compare la différence de température entre la température (T1) mesurée par les premiers moyens de détection (9) et la température (T2) mesurée par les seconds moyens de détection (10), et active la pompe (8) si la différence de température mesurée est supérieure à une valeur de température limite (Tlim) et arrête la pompe (8) si la différence de température mesurée est inférieure à la valeur de température limite (Tlim).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR201804587 | 2018-04-02 | ||
PCT/EP2019/054942 WO2019192782A1 (fr) | 2018-04-02 | 2019-02-28 | Sèche-linge à pompe à chaleur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3775359A1 EP3775359A1 (fr) | 2021-02-17 |
EP3775359B1 true EP3775359B1 (fr) | 2023-07-12 |
Family
ID=65685325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19708999.8A Active EP3775359B1 (fr) | 2018-04-02 | 2019-02-28 | Séchoir à linge avec pompe à chaleur |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3775359B1 (fr) |
PL (1) | PL3775359T3 (fr) |
WO (1) | WO2019192782A1 (fr) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2341180A1 (fr) * | 2009-12-29 | 2011-07-06 | Electrolux Home Products Corporation N.V. | Système de pompe à chaleur pour sèche-linge |
DE102016202114A1 (de) * | 2016-02-12 | 2017-08-17 | BSH Hausgeräte GmbH | Haushaltsgerät und Verfahren zum Betreiben eines Haushaltsgeräts |
-
2019
- 2019-02-28 WO PCT/EP2019/054942 patent/WO2019192782A1/fr unknown
- 2019-02-28 EP EP19708999.8A patent/EP3775359B1/fr active Active
- 2019-02-28 PL PL19708999.8T patent/PL3775359T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
EP3775359A1 (fr) | 2021-02-17 |
WO2019192782A1 (fr) | 2019-10-10 |
PL3775359T3 (pl) | 2024-01-15 |
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