CN105780432B - Cloth drying machine and its working method - Google Patents

Cloth drying machine and its working method Download PDF

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Publication number
CN105780432B
CN105780432B CN201410829981.0A CN201410829981A CN105780432B CN 105780432 B CN105780432 B CN 105780432B CN 201410829981 A CN201410829981 A CN 201410829981A CN 105780432 B CN105780432 B CN 105780432B
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China
Prior art keywords
condensing unit
drying machine
cloth drying
working method
air
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CN105780432A (en
Inventor
徐永刚
李茂银
刘军
陆飞
赵迎
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BSH Electrical Appliances Jiangsu Co Ltd
BSH Hausgeraete GmbH
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BSH Electrical Appliances Jiangsu Co Ltd
BSH Bosch und Siemens Hausgeraete GmbH
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Publication of CN105780432A publication Critical patent/CN105780432A/en
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Abstract

The invention discloses a kind of working methods of cloth drying machine, and wherein cloth drying machine includes control device;Equipped with the accommodating chamber for being oven-dried clothing;The air circulation duct communicated with accommodating chamber;It is supplied water into air circulation duct to condense the condensing unit of the drying air from accommodating chamber;It is equipped with blower device in air circulation duct and is circulated in clothing accommodating chamber and air circulation duct with promoting to dry air, its main feature is that the working method includes to execute condensed water detecting step by control device, in this step, control device opens condensing unit, and judges whether condensing unit provides water according to the rotation speed change or the variation of blower device operating current of blower device in a period of time behind condensing unit unlatching front and back or condensing unit unlatching.In addition, the invention also provides a kind of cloth drying machines that can be realized above-mentioned working method.

Description

Cloth drying machine and its working method
[technical field]
The present invention relates to a kind of working methods of cloth drying machine, and are related to that the clothes drying of the working method can be achieved Machine.
[background technique]
The cloth drying machines such as the cloth drying machine that the laundry of existing dryer sum aggregate is integrated with clothes drying function usually just like Lower drying course: under the action of heating device, dry air is heated to form dry hot-air in heating tube, then into Enter in clothing accommodating chamber and heat exchange occurs with wet clothing, the moisture in clothing is taken away, forms moister hot-air, so Enter condensing unit by outlet set on accommodating chamber afterwards, by the condensation of condensing unit, moister heat is empty Moisture in gas is condensed into water, is then discharged by drainpipe, and the air after being condensed becomes the cold air of relatively dry, It is imported into heating tube again in the effect of fan, by being thermally formed dry hot-air into next circulation, so week And renew, until drying procedure terminates.
In cloth drying machine relatively common condensing unit be in the air duct being connect with clothing accommodating chamber setting with The spray head of water inlet pipe connection, condensation trap is equipped on water inlet pipe.Water from spray head ejection after in channel come from clothing accommodating chamber Vapor meet.Since the temperature of water is lower, vapor, which then cools down, is condensed into water.
During the drying process if there is cutting off the water, hydraulic pressure is too low, tap be not switched on or condensation trap damage caused by Condensation water quantity is very few or evaporated condensation water supply, the vapor that clothing evaporates cannot effectively be cooled, it is difficult to reach It is condensed to dew-point temperature, then will be greatly reduced the drying performance of machine.Meanwhile no cooling water or cooling water is very few to lead Machine temperature is excessively high in cause drying course, causes aging, the deformation of machine interior section plastic part, to damage machine or contracting The service life of short machine.
The whether normal method of water flow whether known detection water valve supplies water or supply is to pass through flow sensor Or the hydraulic pressure by detecting clothing accommodating chamber.However, due to the general very little of the flow of condensed water, about at 0.25 liter/min Range between 1 liter/min, and for the flow sensor of small flow, often accuracy in detection is low currently on the market, price It is expensive.Whether supplied water by the hydraulic pressure that detection condensation trap opens clothing accommodating chamber after a period of time judging condensation trap or water supply Size the shortcomings that be to be influenced by the factors such as accuracy of mechanical system and user's water pressure, flooding time and pressure rise Relationship is inconsistent, if flooding time setting is too long, it is possible to will appear cooling water enter interior bucket and the case where wetting clothing, such as The setting of fruit flooding time is too short, and pressure parameter setting is too low, then detection accuracy is not high, is easy to appear erroneous judgement;In addition, drying starts Preceding to detect water supply situation by additionally intaking, machine is in cold conditions loitering phase at this time, wastes the cooling water of this part supply, Also the runing time of drying procedure is wasted.
[summary of the invention]
It is an object of the present invention to provide a kind of improvement or the working methods for the cloth drying machine for overcoming disadvantages mentioned above, and The cloth drying machine that the working method can be achieved is provided.
For object above, the present invention provides the working method of such a cloth drying machine, wherein cloth drying machine packet Containing control device;Equipped with the accommodating chamber for being oven-dried clothing;The air circulation duct communicated with accommodating chamber;Into air circulation duct It supplies water to condense the condensing unit of the drying air from accommodating chamber;Blower device is equipped in air circulation duct to promote to dry Dry air circulates in clothing accommodating chamber and air circulation duct, its main feature is that the working method includes by control dress Set execute condensed water detecting step, in this step, control device open condensing unit, and according to condensing unit open front and back or The rotation speed change of blower device or the variation judgement condensation of blower device operating current fill in a period of time after person's condensing unit is opened It sets and whether provides water.
Preferably, along air-flow direction, wherein the blower device is located at the downstream of condensing unit present position.
Preferably, the working method includes to execute preheating step by control device, and in this step, heating accommodates Indoor air supplies the drying air after heating to accommodating chamber, and the condensing unit for supplying condensed water is closed, and preheating walks Enter condensed water detecting step after rapid.
Preferably, in condensed water detecting step, if condensing unit opens front and back or condensing unit opens latter section The revolving speed of time blower device increases or operating current becomes smaller, then is judged as the oriented air circulation duct supply water of condensing unit; If blower device revolving speed is reduced or remained unchanged or blower device operating current becomes larger or remains unchanged, it is judged as condensation Device does not supply water to air circulation duct.
Preferably, condensed water detecting step is continuously carried out in the condensing unit course of work, if detecting blower device Revolving speed reduce or operating current becomes larger, then be judged as the water reduction that condensing unit supply to air circulation duct.
Preferably, in condensed water detecting step, if condensing unit opens front and back or condensing unit opens latter section In time, the revolving speed of blower device is more than or equal to particular value or blower device operating current is less than or equal to particular value, then judges Normal water supply amount is supplied to air circulation duct for condensing unit.
Preferably, if judging, condensing unit does not supply water to air circulation duct, issues prompt information.
Preferably, the prompt information includes that user is reminded to open the water inlet pipe tap to supply water to cloth drying machine.
Preferably, if judge condensing unit not to air circulation duct supply water, control device store condensing unit without The information of water.
Preferably, if judging, condensing unit does not supply water to air circulation duct, and cloth drying machine interrupts drying procedure.
Preferably, baking step is entered after condensed water detecting step.
Preferably, if judging, condensing unit does not supply water to air circulation duct, reduces and accommodates in baking step The heating temperature of indoor air or the heating temperature for reducing the air supplied to accommodating chamber.
Preferably, wherein the blower device includes a motor, and the motor is DC brushless motor or phase asynchronous Motor.
For above-mentioned purpose, it to include control device that the present invention also provides a kind of cloth drying machines, equipped with being oven-dried clothing Accommodating chamber, the air circulation duct communicated with accommodating chamber supply water into air circulation duct to condense from the damp and hot of accommodating chamber The condensation trap of air, control device therein are configured to make dryer that can realize above-mentioned working method.
Compared with the prior art, the advantages of the present invention are as follows utilize blower device revolving speed or operating current and air circulation The correspondence associated change characteristic of system resistance in channel, can be real by detection blower device rotation speed change or operating current variation Now whether detection condensing unit provides the purpose of condensed water, does not increase the extra cost of machine;Testing result is more accurate, will not It is influenced by cloth drying machine mechanical structure itself, in the environment of various load weights, environment temperature or cooling water temperature fluctuation In can accurately detect;Since condensed water detecting step carries out after the pre-heat step, filled in accommodating chamber and air circulation duct The vapor completely evaporated, then the condensed water in condensed water detecting step can directly play condensation, therefore will not bring The waste of water and drying time;Capable of emitting prompt information when as judging that water provided by condensation trap is zero, facilitate user or Maintenance personal checks water system;When as judging that water provided by condensation trap is zero, it is anhydrous that control device stores condensation trap Information, maintenance personal can be judged rapidly according to the information and its frequency stored condense water valve whether damage;In addition, of the invention Cloth drying machine detect water provided by condensation trap be zero or be less than normal water supply amount in the case where still can be to clothing Object is dried, and the heating temperature due to reducing air, and associated components will not be damaged because of high temperature.
[Detailed description of the invention]
Fig. 1 is cloth drying machine structural schematic diagram;
[specific embodiment]
As shown in Figure 1, cloth drying machine 1 has the clothing accommodating chamber 3 being located in cabinet 2, it includes being driven by motor 4 The rotatable outer barrel 6 interior bucket 5 and be placed on outside interior bucket 5.Outer barrel 6 is connect with the both ends of air circulation duct 7, to keep drying empty Gas 8 can circulate in clothing accommodating chamber 3 and air circulation duct 7.Air circulation duct 7 includes condensation channel 9 and heating Channel 10 is equipped with blower device 11 in air circulation duct 7 and promotes to dry air 8 in clothing accommodating chamber 3 and air circulation duct 7 In circulate.Cloth drying machine 1 also has control device 12, and the operation of each equipment in control machine is arranged according to program. Wherein, by the control of control device 12, in drying procedure, heating channel 10 is heated to drying air 8 therein is flowed through; High temperature drying air 8 after heating enters clothing accommodating chamber 3 under the action of blower device 11, heats the moist clothing in interior bucket 5 Object evaporates the moisture in clothing;Drying air 8 carries the moisture of evaporation and then enters condensation channel 9, dries air wherein Moisture in 8 is condensed and becomes liquid again, separates from drying air 8, and drying air 8 then becomes low temperature again and does It is dry, and heating channel 10 is reentered under the drive of blower device 11, and start the circulation of a new round, so in cycles, Clothing in final drying inner barrel 5.
In order to condense to the drying air 8 in condensation channel 9, condensation channel 9 is equipped with condensing unit 15 comprising Water supplying pipe 13 and the condensation trap 14 for being mounted on water supplying pipe 13 and being connect with water source.Along air-flow direction, blower device 11 The downstream for 15 present position of condensing unit being located at.
Blower device 11 is built-in with motor, is usually DC brushless motor or threephase asynchronous machine, in blower device 11 In the course of work, when the external environment locating for it changes, i.e., the system resistance in air circulation duct 7 changes When, the revolving speed of the blower device 11 i.e. revolving speed of its built-in motor can correspondingly change, while the work electricity of blower device 11 Stream can also change therewith, itself performance of general DC brushless motor or threephase asynchronous machine just can satisfy this to strain Change characteristic.
When selecting and executing drying procedure, under the control action of control device 12, cloth drying machine 1 is first carried out pre- Hot step.In this step, drying air 8 is heated continuously in heating channel 10, the air supply after heating to accommodating chamber 3 In, and condensation trap 14 is in close state.It in other embodiments can also be direct by the heating device being located in accommodating chamber 3 Heating device directly heats the air in accommodating chamber 3.In preheating step, cloth drying machine 1 measures blower device 11 in the work The revolving speed to tend towards stability during work, and controlled device 12 is recorded as V1;Or cloth drying machine 1 measures blower device 11 at this The operating current to tend towards stability during work, and simultaneously controlled device 12 is recorded as I1.
Enter condensed water detecting step after preheating step.In this step, heating channel 10, which stops heating, is supplied to appearance Receive the air of room 3.In other embodiments, if the device of heating air is located in accommodating chamber 3, stop heating accommodating chamber 3 Interior air.It opens condensing unit 15 to open 14 a period of time of condensation trap, such as 60 seconds.After 60 seconds, condensation trap 14 is closed It closes.In 60 seconds that the condensation trap 14 is opened, cloth drying machine 1 measures turn that blower device 11 tends towards stability during the work Speed, and controlled device 12 is recorded as V2;Or cloth drying machine 1 measures what blower device 11 tended towards stability during the work Operating current, and controlled device 12 is recorded as I2.If then by V1 and V2 perhaps I1 be compared with I2 V2>V1 or I2< I1, control device 12 judge that condensing unit 15 has condensed water supply;If V2 is more than or equal to a specific rotation speeds value V, and V2 >= V> V1 or I2 is less than or equal to a particular job current value I, and I2≤I< I1, control device 12 judge condensing unit The 15 normal condensation water quantities of supply.Specific rotation speeds value VWith particular job current value IFor when condensing unit 15 supply it is normal cold The revolving speed and operating current for the blower device 11 that cloth drying machine 1 measures when condensate flow, and be pre-arranged in control device 12 In;If V> V2 > V1 or INormal water is not achieved in < I2 < I1, the condensation water quantity that control device 12 judges that condensing unit 15 is supplied It is flat;If otherwise V2≤V1 or I2 >=I1, control device 12 judge that condensing unit 15 does not supply condensed water.
In addition, condensed water detecting step is continuously carried out during the work of condensing unit 15 is that condensation trap 14 is opened, if It detects that the revolving speed V2 of blower device 11 is reduced or operating current I2 becomes larger, is then judged as that condensing unit 12 is logical to air circulation The water that road 7 is supplied reduces.
Due in 14 opening procedure of condensation trap, condensed water sprays into condensation channel 9 by water supplying pipe 13, and with flow wherein 8 direct collision of drying air of promoting menstruation simultaneously hinders drying air 8 dynamic toward downstream side surface current and enters locating for blower device 11 In air circulation duct 7, namely the air quantity of blower device 11 is flowed through at this time and is reduced suddenly, in the situation that operating voltage is constant Under, blower device 11 drives the air quantity for continuing to circulate toward downstream to become smaller, the resistance that blower device 11 correspondingly needs to overcome Power becomes smaller, and the operating power of blower device 11 becomes smaller therewith, and operating current I2 becomes smaller, and revolving speed V2 is then increased.Meanwhile condensing unit 15 condensation water quantities provided number will will affect the amplitude that revolving speed V2 is raised how many and operating current I2 becomes smaller, i.e. condensation fills The water for setting 15 offers is more, then the revolving speed V2 of blower device 11 is increased more, while blower device operating current I2 becomes to get over It is small.So it can reach whether detection condensing unit 15 mentions by the rotation speed change of detection blower device 11 or operating current variation For the purpose of condensed water.
Judgement condensation opens or closes condensation trap 14 and refers to the circuit of connection condensation trap 14 under the action of control device 12 It is switched on or disconnects, if condensation trap 14 damages, even if opening condensation trap 14, still may be unable to supply condensed water.Therefore it opens Condensation trap 14 is movement performed by control device 12.
In above-mentioned condensed water detecting step, if control device 12 judges that evaporated condensation water is supplied, condensation trap is also even judged Water provided by 14 is zero, then issues prompt information by display, signal lamp or audio devices, informs user, meanwhile, Control device 12 stores the anhydrous information of condensation trap 14.If it was found that continuous anhydrous mistake, and determining tap and being in opening state State, the information that maintenance personal can be stored according to control device 12 check rapidly whether condensation trap or its circuit damage.
Enter baking step after condensed water detecting step.
If judging in condensed water detecting step, water provided by condensing unit 15 is zero or is less than normal water supply amount, The heating temperature of the air in accommodating chamber 3 is then reduced in baking step or reduces the heating for the air supplied to accommodating chamber 3 Temperature.For example, being in condensation water quantity if the target temperature heated in channel 10 in normal baking step is controlled at 100 DEG C Zero or be less than normal water supply amount in the case where, then should reduce heating channel 10 heating power, make heat channel 10 in mesh It marks temperature and is in 80 DEG C or so.In the case, the time of drying can be grown partially, but not damage to cloth drying machine 1.
In further embodiments, if control device 12 judges that evaporated condensation water is supplied, also even judge that condensation trap 14 is mentioned The water of confession is zero, is issuing prompt information by display, signal lamp or audio devices, can be with while informing user The drying procedure for interrupting cloth drying machine 1, can cause possible damage to avoid subsequent baking step to clothing.
Embodiment provided above is only better embodiment of the invention, and the present invention can also be there are many other implementations Mode, it is for those of ordinary skill in the art, made under the teachings of the present invention to be directed to equivalence changes of the invention, It should be included in the range that claim of the invention is advocated.

Claims (14)

1. a kind of working method of cloth drying machine, wherein cloth drying machine includes control device;Equipped with the appearance for being oven-dried clothing Receive room;The air circulation duct communicated with accommodating chamber;It supplies water into air circulation duct empty to condense the drying from accommodating chamber The condensing unit of gas;Blower device is equipped in air circulation duct to promote to dry air in clothing accommodating chamber and air circulation It is circulated in channel, it is characterised in that: the working method includes to execute condensed water detecting step by control device, at this In step, control device opens condensing unit, and according to a period of time behind condensing unit unlatching front and back or condensing unit unlatching Rotation speed change or blower device the operating current variation of interior blower device judge whether condensing unit provides water.
2. the working method of cloth drying machine as described in claim 1, it is characterised in that: along air-flow direction, wherein The blower device is located at the downstream of condensing unit present position.
3. the working method of cloth drying machine as described in claim 1, it is characterised in that: the working method includes to pass through control Device processed executes preheating step, and in this step, heating accommodates indoor air or supplies the drying after heating to accommodating chamber Air, and the condensing unit for supplying condensed water is closed, and condensed water detecting step is entered after preheating step.
4. the working method of cloth drying machine as described in claim 1, it is characterised in that: in condensed water detecting step, if Before and after condensing unit is opened or the revolving speed of a period of time blower device increases after condensing unit unlatching or operating current becomes smaller, then It is judged as the oriented air circulation duct supply water of condensing unit;If blower device revolving speed is reduced or remained unchanged or air blast dress It sets operating current to become larger or remain unchanged, is then judged as that condensing unit does not supply water to air circulation duct.
5. the working method of cloth drying machine as described in claim 1, it is characterised in that: held in the condensing unit course of work Continuous to execute condensed water detecting step, if detecting, the revolving speed of blower device is reduced or operating current becomes larger, and is judged as condensation The water that device is supplied to air circulation duct reduces.
6. the working method of cloth drying machine as described in claim 1, it is characterised in that: in condensed water detecting step, if After condensing unit unlatching front and back or condensing unit are opened in a period of time, the revolving speed of blower device is more than or equal to particular value, or Person's blower device operating current is less than or equal to particular value, then is judged as that condensing unit supplies normal water supply to air circulation duct Amount.
7. the working method of cloth drying machine as described in claim 1, it is characterised in that: if judging condensing unit not to sky Gas circulation canal supplies water, then issues prompt information.
8. the working method of cloth drying machine as claimed in claim 7, it is characterised in that: the prompt information includes reminding to use Open the water inlet pipe tap to supply water to cloth drying machine in family.
9. the working method of cloth drying machine as described in claim 1, it is characterised in that: if judging condensing unit not to sky Gas circulation canal supplies water, and control device stores the anhydrous information of condensing unit.
10. the working method of cloth drying machine as described in claim 1, it is characterised in that: if judge condensing unit not to Air circulation duct supplies water, and cloth drying machine interrupts drying procedure.
11. the working method of cloth drying machine as described in claim 1, it is characterised in that: after condensed water detecting step Into baking step.
12. the working method of cloth drying machine as described in claim 1, it is characterised in that: if judge condensing unit not to Air circulation duct supplies water, then reduces to accommodate the heating temperature of indoor air or reduce supplying in baking step to accommodating chamber The heating temperature for the air answered.
13. the working method of cloth drying machine as described in claim 1, which is characterized in that wherein the blower device includes One motor, and the motor is DC brushless motor or threephase asynchronous machine.
14. a kind of cloth drying machine includes control device, equipped with the accommodating chamber for being oven-dried clothing, the air communicated with accommodating chamber Circulation canal is supplied water into air circulation duct to condense the condensing unit of the damp-heat air from accommodating chamber, it is characterised in that: The control device is configured to make dryer that can realize working method described in any claim in claim 1-13.
CN201410829981.0A 2014-12-26 2014-12-26 Cloth drying machine and its working method Active CN105780432B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106120278B (en) * 2016-08-25 2018-08-17 海信(山东)冰箱有限公司 A kind of washing-drying integral machine and its drying control method
CN113818181A (en) * 2020-06-16 2021-12-21 无锡小天鹅电器有限公司 Clothes treating apparatus
CN114086375B (en) * 2021-12-01 2022-09-16 珠海格力电器股份有限公司 Washing machine drying control method and device, washing machine and storage medium

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EP2123823A1 (en) * 2008-05-22 2009-11-25 Electrolux Home Products Corporation N.V. Home laundry drier
CN103080410A (en) * 2010-08-19 2013-05-01 Lg电子株式会社 Laundry machine having a drying function, and method for controlling same
CN103882664A (en) * 2012-12-19 2014-06-25 博西华电器(江苏)有限公司 Clothes dryer and working method thereof
CN104131444A (en) * 2013-05-03 2014-11-05 博西华电器(江苏)有限公司 Dryer capable of drying clothes with fillers and drying method thereof

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Publication number Priority date Publication date Assignee Title
EP2123823A1 (en) * 2008-05-22 2009-11-25 Electrolux Home Products Corporation N.V. Home laundry drier
CN103080410A (en) * 2010-08-19 2013-05-01 Lg电子株式会社 Laundry machine having a drying function, and method for controlling same
CN103882664A (en) * 2012-12-19 2014-06-25 博西华电器(江苏)有限公司 Clothes dryer and working method thereof
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