WO2018006772A1 - 一种根据加热器控制周期调节冷凝介质量的方法 - Google Patents

一种根据加热器控制周期调节冷凝介质量的方法 Download PDF

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Publication number
WO2018006772A1
WO2018006772A1 PCT/CN2017/091442 CN2017091442W WO2018006772A1 WO 2018006772 A1 WO2018006772 A1 WO 2018006772A1 CN 2017091442 W CN2017091442 W CN 2017091442W WO 2018006772 A1 WO2018006772 A1 WO 2018006772A1
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Prior art keywords
heater
condensing medium
supply
condensing
amount
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PCT/CN2017/091442
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English (en)
French (fr)
Inventor
宋华诚
许升
田书君
徐永洪
张立君
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Qingdao Haier Drum Washing Machine Co Ltd
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Qingdao Haier Drum Washing Machine Co Ltd
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Priority to EP17823584.2A priority Critical patent/EP3483334A4/en
Publication of WO2018006772A1 publication Critical patent/WO2018006772A1/zh
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/32Control of operations performed in domestic laundry dryers 
    • D06F58/34Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02Characteristics of laundry or load
    • D06F2103/08Humidity
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28Air properties
    • D06F2103/32Temperature
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38Time, e.g. duration
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/52Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/36Condensing arrangements, e.g. control of water injection therefor
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56Remaining operation time; Remaining operational cycles
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/20General details of domestic laundry dryers 
    • D06F58/24Condensing arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/32Control of operations performed in domestic laundry dryers 
    • D06F58/34Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/46Control of the operating time
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention belongs to the technical field of clothes dryers, and in particular to a method for adjusting the amount of condensing medium according to a heater control cycle.
  • the dryer typically has a cartridge containing the fabric to be dried and a condensing device in communication with the cartridge space.
  • the process air is heated to meet the moist fabric in the barrel, evaporating moisture from the fabric and becoming wet.
  • the hot, humid process air then enters the condensing unit.
  • process air exchanges heat with a lower temperature condensing medium, and the moisture therein is condensed and separated from the process air.
  • the water content of the air near the condensing device varies, so that the power required by the dryer for the condensing device varies during the entire working process. If the working mode of maintaining the power of the condensing device in the whole working process in the conventional clothes dryer is adopted, the power of the condensing device is inevitably wasted, thereby wasting resources.
  • Chinese Patent Application No. 201410479955.X discloses a clothes dryer and a drying method thereof, and specifically discloses: wherein the clothes dryer comprises a control device, a barrel for containing the fabric to be dried, and a condensation device communicating with the barrel space, Wherein the condensing device comprises a condensing medium supply, the method comprising determining the tempo of the supply of condensing medium during the drying process based at least on the temperature of the condensing medium.
  • the control device continuously detects the change of the fabric information in the tub and/or the information change of the process air participating in the drying, and according to the change of the fabric information in the tub and/or participates in the drying process.
  • the change in air information adjusts the rhythm of the condensate supply.
  • the patent focuses on a method for adjusting the rhythm of the condensing medium according to the temperature of the condensing medium.
  • the problem with this method is that: 1.
  • the temperature change of the condensing medium is caused by the heat dissipation of the air discharged from the dryer, and is condensed.
  • the temperature change of the medium to react to the drying process is not straightforward;
  • Second, the specific heat capacity of the condensing medium, especially when using water as the condensing medium, is large, therefore, the temperature reaction of the condensing medium is not sensitive enough, further affecting the adjustment of the entire condensing medium supply. Accuracy.
  • the existing condensing dryer controls the condensed water, and the following improvements are made to control the inlet water according to the time node. For example, after the start of drying, the water is introduced for 15 seconds to stop the water inlet 5 The second loop is controlled in a way.
  • this method does not consider the influence of the humidity of the fabric. The single reduction of the supply of water causes insufficient condensation, the drying time becomes longer, and the energy consumption becomes larger.
  • the present invention has been made in view of the above.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a method for adjusting the amount of condensing medium according to the heater control period.
  • a method for adjusting the amount of condensing medium according to a heater control cycle comprising the following steps:
  • the supply of the condensing medium is turned off during the start of the dryer until the dryer air temperature reaches the set temperature value.
  • determining the operating state of the heater according to the time value that the outlet air temperature of the dryer reaches the set temperature value, or determining the heating according to the time value of the air temperature of the dryer into the set inlet temperature value The operating state of the device.
  • step S4 the supply amount of the condensed medium per unit time is adjusted according to the control cycle state of the heater.
  • the opening degree of the condensing medium valve controls the opening degree of the condensing medium valve.
  • the unit length of the supply of the condensing medium is adjusted according to the control cycle state of the heater in step S4.
  • the unit length of supply of the condensing medium is extended, and when the heater is turned off, the unit length of supply of the condensing medium is shortened.
  • the change in the unit length of the supply of the condensing medium is achieved.
  • the rate of increase in the outlet air temperature is increased, the opening and closing interval of the heater becomes small, the supply amount of the condensing medium per unit time is reduced, or the unit length of the supply of the condensing medium becomes small.
  • the dryer of the present invention comprises a control device, a heater, a cartridge for containing the fabric to be dried, a condensation device in communication with the cartridge space, and a first temperature detecting device for detecting the temperature of the cartridge air, wherein the condensation device comprises a condensing medium supply device and condensation
  • the control device is arranged to control the operation of the condensate medium valve in accordance with the method described above.
  • the control device controls the heater to provide heated air to the cylinder. After the heated air exchanges heat with the fabric in the cylinder, the water in the fabric evaporates to form water vapor, which is discharged from the cylinder, and the first temperature detecting device detects The outlet air temperature controls the opening of the condensing medium valve based on the detected outlet air temperature.
  • the invention determines the operating state of the heater and the opening of the condensing medium valve according to the detected time value of the outlet air temperature reaching the set temperature value, and determines the supply tempo of the condensing medium according to the control cycle state of the heater.
  • the drying air starts to reach the set temperature value, which is the pre-drying stage.
  • the control device controls the condensing medium valve to open and does not provide condensing medium.
  • the length of the early stage affects the operating state of the heater. Long, indicating that the more moisture in the fabric, the longer the opening time of the heater, the longer the time for supplying the condensing medium.
  • the control device opens and closes the heater. Interval control of the opening time or opening degree of the condensing medium valve, condensing the moisture in the outlet air at a set rhythm, since the heat of the air entering the cylinder is mostly absorbed by the moisture in the fabric, the temperature of the outlet air is less changed.
  • the amount of water evaporated is also the most.
  • the length of supply of the condensing medium is prolonged or the supply of the condensing medium is increased; as the drying clothes proceed, the moisture in the fabric is less and less, and the rate of change of the temperature of the outlet air is increased.
  • the opening and closing interval of the heater becomes small, the supply amount of the condensing medium per unit time is reduced, or the unit length of the supply of the condensing medium becomes small.
  • the dryer is further provided with a second temperature detecting device for detecting the temperature of the inlet air, and determining the operating state of the heater according to the detected time value of the inlet air temperature reaching the set inlet temperature value.
  • the present invention has the following beneficial effects compared with the prior art: the dryer of the invention can adjust the supply of the condensing medium according to the change of the heater control cycle, thereby ensuring the drying efficiency and avoiding the condensing medium. Waste.
  • FIG. 1 and 2 are schematic diagrams showing changes in the supply amount of the condensing medium for different duty cycles of the heater of the present invention.
  • the clothes dryer of the present invention has a casing and a cylinder housed in the casing and containing the fabric to be dried.
  • the air inlet and the air outlet of the cylinder are respectively connected to the heater and the condensing device.
  • the air blowing device is connected between the heater and the condensing device to promote air circulation between the cylinder, the heater and the condensing device, and at the same time, the air outlet of the cylinder is further provided with a first temperature detecting device to obtain the outlet air temperature.
  • the condensing device comprises an air passage and a condensing medium supply, wherein the condensing medium supply comprises a condensing medium path thermally conductively associated with the air passage, a supply element providing the condensing medium, and a condensing medium valve mounted on the condensing medium path.
  • the opening and closing of the condensing medium valve is controlled by the control unit.
  • the first temperature detecting means is electrically connected to the control means so that the detected temperature information can be transmitted to the control means, and the heater is electrically connected to the control means, whereby the control means controls the opening and closing of the heater.
  • the condensing medium is cooling water
  • the supply element is tap water
  • the condensing medium valve is a water valve
  • the part of the condensing medium path outside the air passage is a water delivery pipe
  • the air passage is in the air passage.
  • the heater heated air is fed into the cylinder by the air blowing device, and the moisture contained in the fabric is evaporated after contact with the moist fabric therein.
  • the hot, humid air then enters the air passage of the condensing unit where it exchanges heat with the condensing medium in the condensing medium path, so that the temperature of the outlet air is lowered, and the moisture therein is condensed to separate from the outlet air.
  • the condensed air that has become dry enters the heater again, and after heating, enters the next cycle, thereby gradually separating the moisture from the fabric.
  • the supply of condensing medium is determined by the condensing medium valve and is controlled by the control unit. Determining the operating state of the heater according to the time value of the outlet air temperature detected by the first temperature detecting device reaching the set temperature value, according to The rate of change of the outlet air temperature determines the operating state of the heater.
  • the condensing medium valve is opened/closed according to the working state of the heater. The larger the time value of the dryer air temperature reaching the set temperature value, the larger the unit length of the heater opening, the longer the supply of the condensing medium or the more the condensing medium is supplied.
  • the dryer is further provided with a second temperature detecting device for detecting the temperature of the inlet air, and determining the operating state of the heater according to the detected time value of the inlet air temperature reaching the set inlet temperature value.
  • a second temperature detecting device for detecting the temperature of the inlet air, and determining the operating state of the heater according to the detected time value of the inlet air temperature reaching the set inlet temperature value. The greater the time when the dryer air temperature reaches the set inlet temperature value, the greater the unit length of the heater opening, the longer the supply of condensing medium or the more condensing medium is supplied.
  • FIG. 1 and FIG. 2 it is a schematic diagram of the change of the supply amount of the condensing medium corresponding to different working cycles of the drying process heater of the present invention.
  • a method for adjusting the amount of condensing medium according to a heater control cycle comprising the following steps:
  • the water supply is not performed because the stage is dry.
  • the fabric in the barrel is in the warming phase, and the evaporation of water is less.
  • the supply of water will inevitably affect the heating rate of the fabric in the drying cylinder, which is not conducive to the evaporation of the entire drying cycle.
  • the set temperature value in the step S1 can be set to 50 ° C by the clothes dryer, and the condensing medium is selected from water.
  • the condensing medium is selected from water.
  • the larger the time value of the dryer air temperature reaching the set temperature of 50 ° C the more moisture in the fabric, the longer the supply of condensed water will be extended.
  • the smaller the time value to reach this set temperature the less moisture there is in the fabric and the shorter the time it takes to supply the condensate.
  • the control cycle of the heater in step S3 includes two cycles, each cycle including a unit duration of the heater on and off determined according to the rate of change of the outlet air temperature, corresponding to the heater on and off shown in FIGS. Off, in the middle of dry clothes, the rate of change of the outlet air temperature is less than the set rate of change. At the end of the drying period, the rate of change of the outlet air temperature is greater than the set rate of change. The rate of rise of the air temperature of the outlet is increased, the opening and closing interval of the heater becomes smaller, and the supply of the condensing medium per unit time The unit length for reducing or supplying the condensing medium is reduced.
  • step S4 the supply amount of the condensed medium per unit time is adjusted according to the control cycle state of the heater.
  • the opening degree of the condensing medium valve is controlled to realize the change of the supply amount of the condensing medium per unit time.
  • step S4 the unit duration of supply of the condensing medium is adjusted according to the control cycle state of the heater.
  • the unit length of supply of the condensing medium When the heater is turned on, the unit length of supply of the condensing medium is extended, and when the heater is turned off, the unit length of supply of the condensing medium is shortened.
  • the opening and closing time of the condensing medium valve is controlled to realize the change of the unit length of the supply of the condensing medium.
  • the moisture in the fabric is gradually reduced during the operation of the dryer. Therefore, the working cycle of the heater can be different according to the different stages of the drying process, and the supply rhythm of the condensed water can be refined according to the working cycle of the heater. .
  • the heat of the air entering the drying cylinder is mostly absorbed by the moisture in the fabric, and the temperature of the outlet cylinder changes slowly. At this time, the amount of water evaporated is also the most.
  • the condensed water is supplied during the period. Time is longer or more supply. In the later stage of drying, as the moisture in the fabric decreases, the temperature of the dryer's outlet temperature increases. At this time, the time for supplying the condensed water is shortened or the supply is reduced, so that the condensation of moisture in the air of the dryer can be achieved.
  • the drying air starts to reach the set temperature value, which is the pre-drying stage.
  • the control device controls the condensing medium supply device to be closed, and does not provide the condensing medium.
  • the length of the early stage affects the supply of the condensing medium. The longer the time, the more moisture in the fabric, the longer the subsequent supply of the condensing medium; in the gentle temperature holding phase of the temperature region, the heater will control the opening and closing according to the change speed of the inlet temperature, and maintain the temperature of the inlet. 110 ⁇ 120 ° C or so.
  • the opening and closing of the heater is determined according to the time value at which the outlet air temperature of the dryer reaches the set temperature value.
  • the outlet air may be discharged due to the supply of air heat into the cylinder.
  • the vapor content is large. If the heater is off, the outlet air will become smaller due to the reduced supply of heat.
  • the supply amount of the condensing medium is adjusted.
  • the unit time for supplying the condensed water is longer or the supply amount of the condensed water per unit time is more.
  • the unit time for supplying condensed water when the heater is turned off is shorter or the supply of condensed water per unit time is less.
  • the opening and closing interval of the heater is also smaller, and the supply of the condensing medium can be reduced according to the interval between the start and stop of the heater. Reduced.
  • the rate of temperature increase is increased, the amount of water evaporated by the clothes is less and less, and the time for supplying condensed water is reduced to achieve condensation of moisture in the air.

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

Abstract

一种根据加热器控制周期调节冷凝介质量的方法,包括如下步骤:S1、干衣开始,检测干衣机出筒空气温度,确定出筒空气温度达到设定温度值;S2、计算自干衣开始至出筒空气温度达到该设定温度值的时间值;S3、确定加热器的控制周期;S4、以步骤S3中确定的加热器的控制周期调节冷凝介质的供应节奏。在干衣机启动直至干衣机出筒空气温度达到所述设定温度值的过程中关闭供应冷凝介质。干衣机可根据加热器控制周期的变化,调节供应冷凝介质量,既可保证干衣效率,同时避免冷凝介质的浪费。

Description

一种根据加热器控制周期调节冷凝介质量的方法 技术领域
本发明属于干衣机技术领域,具体地说,涉及一种根据加热器控制周期调节冷凝介质量的方法。
背景技术
干衣机通常具有容纳待烘干织物的筒以及与筒空间相通的冷凝装置。过程空气经过加热后与筒内的潮湿织物相遇,蒸发织物中的水分,变得潮湿。湿热的过程空气接着进入冷凝装置。在冷凝装置中,过程空气与温度较低的冷凝介质发生热交换,于是其中的水分被冷凝而从过程空气中分离出来。在干衣机的整个烘干过程中,冷凝装置附近空气的含水量是变化的,因而整个工作过程中干衣机对冷凝装置需求的功率也不相同。如果采用传统干衣机中保持冷凝装置整个工作过程功率不变的工作方式,势必会造成冷凝装置功率的浪费,从而浪费了资源。
申请号为201410479955.X的中国专利公开了一种干衣机及其烘干方法,具体公开了:其中干衣机包含控制装置,容纳待烘干织物的桶,与桶空间相通的冷凝装置,其中冷凝装置包含冷凝介质供应装置,所述方法包含至少根据冷凝介质的温度确定烘干过程中冷凝介质供应的节奏。本发明还公开了在烘干过程中,控制装置持续检测桶内织物信息的变化和/或参与烘干的过程空气的信息变化,并根据桶内织物信息的变化和/或参与烘干的过程空气的信息变化调整冷凝介质供应的节奏。该专利着重介绍了一种根据冷凝介质的温度来调节冷凝介质供应节奏的方法,采用此办法存在的问题是:一、冷凝介质的温度变化是通过干衣机出筒空气散热导致的,通过冷凝介质的温度变化来反应烘干过程显得不直接;二、冷凝介质特别是选用水作为冷凝介质时的比热容较大,因此,冷凝介质的温度反应不够灵敏,进一步的影响了整个冷凝介质供应调节的精确性。
为了降低水的消耗,现有冷凝干衣机对冷凝进水的控制,作出如下改进,根据时间节点对进水进行通断控制,例如烘干开始后,以进水15秒,停止进水5秒循环的方式进行控制。但这种方式没有考虑织物湿度的影响,单一的减少水的供应量反而使冷凝不充分,干燥时间变长,能耗变大。
有鉴于此特提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足,提供一种根据加热器控制周期调节冷凝介质量的方法。
为解决上述技术问题,本发明采用技术方案的基本构思是:
一种根据加热器控制周期调节冷凝介质量的方法,包括如下步骤:
S1、干衣开始,检测干衣机出筒空气温度,确定出筒空气温度达到设定温度值;
S2、计算自干衣开始至出筒空气温度达到该设定温度值的时间值;
S3、确定加热器的控制周期;
S4、以步骤S3中确定的加热器的控制周期调节冷凝介质的供应节奏。
进一步的,在干衣机启动直至干衣机出筒空气温度达到所述设定温度值的过程中关闭供应冷凝介质。
进一步的,根据干衣机出筒空气温度达到所述设定温度值的时间值确定加热器的运行状态,或者,根据干衣机进筒空气温度达到设定进筒温度值的时间值确定加热器的运行状态。
优选的,干衣机出筒空气温度达到所述设定温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多;或者,干衣机进筒空气温度达到设定进筒温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多。
进一步的,加热器开启的单位时长与关闭的单位时长比值越大,供应冷凝介质的单位时长越大或单位时间供应冷凝介质越多。
进一步的,步骤S4中根据加热器的控制周期状态,调整单位时间冷凝介质的供应量。
进一步的,当加热器开启时,单位时间冷凝介质的供应量多;当加热器关闭时,单位时间冷凝介质的供应量少。
进一步的,采用控制冷凝介质阀的开度,实现单位时间冷凝介质的供应量变化。
或者,替换方案为,步骤S4中根据加热器的控制周期状态,调整供应冷凝介质的单位时长。
进一步的,当加热器开启时,延长供应冷凝介质的单位时长,当加热器关闭时,缩短供应冷凝介质的单位时长。
进一步的,采用控制冷凝介质阀的开通和断开时间,实现供应冷凝介质单位时长的变化。
进一步的,出筒空气温度升高速率加大,加热器的开闭间隔变小,单位时间冷凝介质的供应量减少或供应冷凝介质的单位时长变小。
本发明干衣机包括控制装置、加热器,容纳待烘干织物的筒、与筒空间相通的冷凝装置和检测出筒空气温度的第一温度检测装置,其中冷凝装置包含冷凝介质供应装置和冷凝介质阀,控制装置被设置成可根据上述方法控制冷凝介质阀的工作。
干衣机启动后,控制装置控制加热器工作,向筒内提供加热的空气,加热空气与筒内织物热交换后,织物中水分蒸发形成水蒸气,从筒内排出,第一温度检测装置检测出筒空气温度,控制装置根据检测的出筒空气温度控制冷凝介质阀的开断。
本发明根据检测的出筒空气温度达到设定温度值的时间值确定加热器的运行状态和冷凝介质阀的开启,根据加热器的控制周期状态确定冷凝介质的供应节奏。
干衣开始至出筒空气温度达到设定温度值,为干衣前期阶段,该阶段控制装置控制冷凝介质阀断开,不提供冷凝介质,该前期阶段的时长影响加热器的运行状态,时间越长,说明织物内的水分越多,加热器的开启时间越长,后续供应冷凝介质的时间也越长;当出筒空气温度升高到设定温度值后,控制装置对应加热器的开闭间隔控制冷凝介质阀的开断时间或开度,以设定的节奏对出筒空气中的水分进行冷凝,由于进入筒内的空气热量大多被织物中的水分吸收,出筒空气温度变化较小,此时蒸发的水量也最多,此阶段延长供应冷凝介质的时长或增大冷凝介质的供应量;随着干衣的进行,织物内水分越来越少,出筒空气温度的变化速率增大,加热器的开闭间隔变小,单位时间冷凝介质的供应量减少或供应冷凝介质的单位时长变小。
或者,干衣机还设有检测进筒空气温度的第二温度检测装置,根据检测的进筒空气温度达到设定进筒温度值的时间值确定加热器的运行状态。
采用上述技术方案后,本发明与现有技术相比具有以下有益效果:本发明干衣机可根据加热器控制周期的变化,调节供应冷凝介质量,既可保证干衣效率,同时避免冷凝介质的浪费。
下面结合附图对本发明的具体实施方式作进一步详细的描述。
附图说明
附图作为本发明的一部分,用来提供对本发明的进一步的理解,本发明的示意性实施例 及其说明用于解释本发明,但不构成对本发明的不当限定。显然,下面描述中的附图仅仅是一些实施例,对于本领域普通技术人员来说,在不付出创造性劳动的前提下,还可以根据这些附图获得其他附图。在附图中:
图1和图2是本发明加热器不同工作周期对应冷凝介质供应量变化的示意图。
需要说明的是,这些附图和文字描述并不旨在以任何方式限制本发明的构思范围,而是通过参考特定实施例为本领域技术人员说明本发明的概念。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对实施例中的技术方案进行清楚、完整地描述,以下实施例用于说明本发明,但不用来限制本发明的范围。
本发明干衣机具有箱体和装于箱体内且容纳待烘干织物的筒。筒的进风口和出风口分别与加热器以及冷凝装置连通。鼓风装置连接于加热器和冷凝装置之间,从而促使空气在筒、加热器以及冷凝装置之间流通,同时,筒的出风口上还装有第一温度检测装置以获得出筒空气温度。
冷凝装置包含空气通道和冷凝介质供应装置,其中冷凝介质供应装置包含与空气通道热传导地关联的冷凝介质路径、提供冷凝介质的供应元件和装于冷凝介质路径上的冷凝介质阀。冷凝介质阀的开启与断开受控制装置的控制。第一温度检测装置与控制装置电连接,从而可将检测到的温度信息发送给控制装置,加热器与控制装置电连接,从而控制装置控制加热器的开闭。
其中,在冷凝装置的一种具体实施方式中,冷凝介质为冷却水,供应元件为自来水,冷凝介质阀为水阀,冷凝介质路径在空气通道外部的部分为输水管道,在空气通道内的部分可以没有独立管道,直接沿着空气通道内壁向下延伸,或者在空气通道内向下喷洒。
在干衣过程中,加热器加热空气由鼓风装置送入筒内,与其中的潮湿织物接触后蒸发织物中所含水分。湿热的空气随后进入冷凝装置的空气通道,在其中与冷凝介质路径内的冷凝介质发生热交换,于是出筒空气的温度降低,其中的水分被冷凝而从出筒空气中分离。随后,变得干燥的冷凝后空气再次进入加热器,经加热后进入下一次循环,以此逐渐将水分从织物中分离。
在上述干衣过程中,冷凝介质的供应由冷凝介质阀确定,并受控制装置的控制。根据第一温度检测装置检测的出筒空气温度达到设定温度值的时间值确定加热器的运行状态,根据 出筒空气温度的变化速率确定加热器的运行状态。冷凝介质阀按加热器的工作状态开启/关闭。干衣机出筒空气温度达到所述设定温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多。
或者,干衣机还设有检测进筒空气温度的第二温度检测装置,根据检测的进筒空气温度达到设定进筒温度值的时间值确定加热器的运行状态。干衣机进筒空气温度达到设定进筒温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多。
进一步的,加热器开启的单位时长与关闭的单位时长比值越大,供应冷凝介质的单位时长越大或单位时间供应冷凝介质越多。
如图1和图2所示,分别为本发明干衣过程加热器不同工作周期对应冷凝介质供应量变化的示意图。
一种根据加热器控制周期调节冷凝介质量的方法,包括如下步骤:
S1、干衣开始,检测干衣机出筒空气温度,确定出筒空气温度达到设定温度值;
S2、计算自干衣开始至出筒空气温度达到该设定温度值的时间值;
S3、确定加热器的控制周期;
S4、以步骤S3中确定的加热器的控制周期调节冷凝介质的供应节奏。
进一步的,为了确保干衣筒内的织物尽快的达到所需要的温度,在干衣开始时,也即在出筒空气温度达到设定温度值之前,先不进行水的供应,因为此阶段干衣筒内的织物处于升温阶段,蒸发的水分较少,此时供应水,势必会影响到干衣筒内织物的升温速率,不利于整个干燥周期的蒸发。
在具体操作时,可以干衣机将步骤S1中的设定温度值定为50℃,冷凝介质选用水。其中,干衣机出筒空气温度达到设定温度50℃的时间值越大,说明织物内的水分越多,供应冷凝水的时间将延长一些。达到这一设定温度的时间值越小,说明织物内的水分越少,供应冷凝水的时间将缩短一些。
步骤S3中加热器的控制周期包括两个周期,每个周期包括根据出筒空气温度的变化速率确定的加热器开启和关闭的单位时长,对应为图1、2中所示的加热器开和关,干衣中期,出筒空气温度的变化速率小于设定的变化速率,干衣后期,出筒空气温度的变化速率大于设定的变化速率。出筒空气温度升高速率加大,加热器的开闭间隔变小,单位时间冷凝介质的供 应量减少或供应冷凝介质的单位时长变小。
实施例一
步骤S4中根据加热器的控制周期状态,调整单位时间冷凝介质的供应量。
当加热器开启时,单位时间冷凝介质的供应量多;当加热器关闭时,单位时间冷凝介质的供应量少。
本实施例采用控制冷凝介质阀的开度,实现单位时间冷凝介质的供应量变化。
实施例二
本实施例中,步骤S4中根据加热器的控制周期状态,调整供应冷凝介质的单位时长。
当加热器开启时,延长供应冷凝介质的单位时长,当加热器关闭时,缩短供应冷凝介质的单位时长。
本实施例采用控制冷凝介质阀的开通和断开时间,实现供应冷凝介质单位时长的变化。
本发明的原理:
在整个干衣机工作的过程中织物内的水分是逐渐减少的,因此可以根据干燥过程的不同阶段,加热器的工作周期也不同,对应加热器的工作周期再细化调整冷凝水的供应节奏。干衣机工作一段时间后,进入干衣筒内的空气热量大多被织物中的水分吸收,出筒温度变化较慢,此时蒸发的水量也最多,此时在该周期内,供应冷凝水的时间要比较长或者供应量比较多。干燥后期,随着织物内水分的减少,干衣机出筒温度升高速率加大,此时供应冷凝水的时间缩短或者供应量减少即可实现干衣机出筒空气中水分的冷凝。
具体为:干衣开始至出筒空气温度达到设定温度值,为干衣前期阶段,该阶段控制装置控制冷凝介质供应装置关闭,不提供冷凝介质,该前期阶段的时长影响冷凝介质供应的多少,时间越长,说明织物内的水分越多,后续供应冷凝介质的时间越长;在温度区域平缓的温度保持阶段,加热器会根据进筒温度的变化速度控制开闭,维持进筒温度在110~120℃左右。或者,根据干衣机出筒空气温度达到所述设定温度值的时间值确定加热器的开闭,如果加热器处于开启状态,出筒空气会因为进筒空气热量的供应,出筒空气水蒸气含量大。如果加热器处于关闭状态,出筒空气会因为热量的供应的减少,出筒空气水蒸气含量变小。根据加热器的运行状态,对冷凝介质供应量进行调整,当加热器开启时供应冷凝水的单位时间长一些或者单位时间冷凝水的供应量多一些。当加热器关闭时供应冷凝水的单位时间短一些或者单位时间冷凝水的供应量少一些。
随干燥进程的发展,干燥循环空气中的湿度越小,空气更容易被加热到目标温度,加热器的开停间隔也变小,冷凝介质的供应量可以根据加热器开停间隔的减小而减小。
干燥后期,温度升高速率加大,衣物蒸发的水分越来越少,供应冷凝水的时间减少即可实现空气中水分的冷凝。
以上所述仅是本发明的较佳实施例而已,并非对本发明作任何形式上的限制,虽然本发明已以较佳实施例揭露如上,然而并非用以限定本发明,任何熟悉本专利的技术人员在不脱离本发明技术方案范围内,当可利用上述提示的技术内容作出些许更动或修饰为等同变化的等效实施例,但凡是未脱离本发明技术方案的内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明方案的范围内。

Claims (12)

  1. 一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:包括如下步骤:
    S1、干衣开始,检测干衣机出筒空气温度,确定出筒空气温度达到设定温度值;
    S2、计算自干衣开始至出筒空气温度达到该设定温度值的时间值;
    S3、确定加热器的控制周期;
    S4、以步骤S3中确定的加热器的控制周期调节冷凝介质的供应节奏。
  2. 根据权利要求1所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:在干衣机启动直至干衣机出筒空气温度达到所述设定温度值的过程中关闭供应冷凝介质。
  3. 根据权利要求1所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:根据干衣机出筒空气温度达到所述设定温度值的时间值确定加热器的运行状态,或者,根据干衣机进筒空气温度达到设定进筒温度值的时间值确定加热器的运行状态。
  4. 根据权利要求3所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:干衣机出筒空气温度达到所述设定温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多;或者,干衣机进筒空气温度达到设定进筒温度值的时间值越大,加热器开启的单位时长越大,供应冷凝介质的时间越长或供应冷凝介质越多。
  5. 根据权利要求1所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:加热器开启的单位时长与关闭的单位时长比值越大,供应冷凝介质的单位时长越大或单位时间供应冷凝介质越多。
  6. 根据权利要求1-5任一所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:步骤S4中根据加热器的控制周期状态,调整单位时间冷凝介质的供应量。
  7. 根据权利要求6所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:当加热器开启时,单位时间冷凝介质的供应量多;当加热器关闭时,单位时间冷凝介质的供应量少。
  8. 根据权利要求7所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:采用控制冷凝介质阀的开度,实现单位时间冷凝介质的供应量变化。
  9. 根据权利要求1-5任一所述的一种根据加热器控制周期调节冷凝介质量的方法,其 特征在于:步骤S4中根据加热器的控制周期状态,调整供应冷凝介质的单位时长。
  10. 根据权利要求9所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:当加热器开启时,延长供应冷凝介质的单位时长,当加热器关闭时,缩短供应冷凝介质的单位时长。
  11. 根据权利要求10所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:采用控制冷凝介质阀的开通和断开时间,实现供应冷凝介质单位时长的变化。
  12. 根据权利要求1-5任一所述的一种根据加热器控制周期调节冷凝介质量的方法,其特征在于:出筒空气温度升高速率加大,加热器的开闭间隔变小,单位时间冷凝介质的供应量减少或供应冷凝介质的单位时长变小。
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