WO2022199595A1 - 一种干衣机的烘干方法及干衣机 - Google Patents

一种干衣机的烘干方法及干衣机 Download PDF

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Publication number
WO2022199595A1
WO2022199595A1 PCT/CN2022/082393 CN2022082393W WO2022199595A1 WO 2022199595 A1 WO2022199595 A1 WO 2022199595A1 CN 2022082393 W CN2022082393 W CN 2022082393W WO 2022199595 A1 WO2022199595 A1 WO 2022199595A1
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Prior art keywords
temperature
heating element
electric heating
compressor
drying
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PCT/CN2022/082393
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English (en)
French (fr)
Inventor
马洪彪
姚龙平
姬华民
Original Assignee
青岛海尔滚筒洗衣机有限公司
海尔智家股份有限公司
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Publication of WO2022199595A1 publication Critical patent/WO2022199595A1/zh

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    • 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
    • D06F58/48—Control of the energy consumption
    • 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
    • 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
    • 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 
    • 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
    • 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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
    • 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
    • D06F2103/68—Operation mode; Program phase
    • 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
    • D06F2105/16—Air properties
    • D06F2105/20—Temperature
    • 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
    • D06F2105/28—Electric heating

Definitions

  • the present application relates to the technical field of clothes dryers, for example, to a drying method of a clothes dryer and a clothes dryer.
  • the heat pump type clothes dryer in the related art is provided with the following gas circulation passages: the heated gas heated by the condenser in the heat pump circulation system is sent into the drum containing the clothes, and the moist gas that has captured moisture from the clothes It is sent back to the evaporator for dehumidification, and the dehumidified gas is heated by the condenser again and sent to the drying chamber.
  • the heat pump system heats the air to dry the clothes, which can keep the low temperature of 50°C-60°C to dry the clothes, which can minimize the damage to the clothes, especially some delicate clothes, and can save energy and protect the environment.
  • the heat pump system to heat and dry clothes.
  • the ambient temperature of the compressor is low, the work efficiency will be reduced, resulting in the clothes not drying or the time required for drying the clothes is too long. Excessive drying of clothes will not only cause certain damage to clothes, but also cause waste of resources.
  • heating elements such as heating wires or heating pipes are arranged in the heat pump clothes dryer for auxiliary heating.
  • the drying time is shortened by the heating time of the dryer.
  • the heating element and the heat pump system cannot be used in a reasonable manner, not only will the work efficiency not be improved, but also the over-drying of the clothes may occur, which will cause certain damage to the clothes and also cause waste of resources.
  • the present application provides a drying method for a clothes dryer, which improves drying efficiency, improves drying effect, and avoids excessive drying and waste of resources.
  • the application also provides a clothes dryer, which has high working efficiency, good drying effect, energy saving and emission reduction, and improves user satisfaction.
  • the present application provides a drying method for a clothes dryer, the clothes dryer includes a heat pump system and an electric heating element, the heat pump system includes a compressor, a condenser, an evaporator and a throttling device, the drying
  • the methods include accelerated drying mode, normal mode and energy saving mode;
  • the start and stop of the compressor is controlled according to the condenser outlet temperature and the compressor discharge port temperature, and the compressor is controlled according to the condenser outlet temperature and the temperature at the electric heating element. Start and stop of the electric heating element, and when the compressor stops working, the electric heating element stops working;
  • the electric heating element stops working, and the compressor starts and stops according to the condenser outlet temperature and the compressor discharge outlet temperature.
  • the present application further provides a clothes dryer according to the method for drying a clothes dryer according to the above-mentioned first aspect, wherein the clothes dryer includes a heat pump system and an electric heating element, and the heat pump system includes a compressor, Condensers, evaporators and throttling devices;
  • the clothes dryer further includes an operation panel, and the operation panel is provided with mode buttons for the user to select the accelerated drying mode, the normal mode and the energy-saving mode.
  • FIG. 1 is a flowchart of a drying method of a clothes dryer provided by an embodiment of the present application.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • connection may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the drying efficiency of the clothes dryer is low, the clothes may be over-dried or not dried, causing damage to the clothes, and the energy consumption of the clothes dryer is high.
  • This embodiment provides a drying method of the clothes dryer. A method and a clothes dryer are provided to solve the above technical problems.
  • the clothes dryer provided in this embodiment includes a heat pump system and an electric heating element
  • the heat pump system includes a compressor, a condenser, an evaporator and a throttling device.
  • the refrigerant circulation pipeline connects the evaporator, the compressor, the condenser, and the throttling device to the evaporator in sequence
  • an electric heating element is arranged on the pipeline connecting the air outlet of the condenser with the inner cylinder of the clothes dryer, so as to To achieve auxiliary heating of the gas entering the inner cylinder.
  • the electric heating element may be an electric heating wire or an electric heating tube, which is not limited herein.
  • the dryer can perform three drying modes: accelerated drying mode, normal mode and energy-saving mode.
  • the dryer also includes an operation panel.
  • the operation panel is provided with mode buttons for users to select accelerated drying mode, normal mode and energy-saving mode.
  • a touch display screen is set on the operation panel, and three separate touch-type mode buttons can be set on the touch-screen display screen, each mode button corresponds to a drying mode, and a touch-type mode button can also be set, to switch between different drying modes, and the font of the current drying mode will be displayed on the mode button.
  • mechanical mode buttons can also be set on the operation panel, three mechanical mode buttons can be set, each mode button corresponds to a drying mode, and one mechanical mode button can also be set, In order to switch between different drying modes, an area displaying the font of the current drying mode is set on the corresponding operation panel, so that the user can understand the current drying mode.
  • the clothes dryer provided by the present application, users can select one of three drying modes according to their needs, which improves the flexibility of the clothes dryer, and the drying effect can meet the needs of users, save energy and reduce emissions, and improve the use of the clothes dryer. satisfaction.
  • the drying method includes an accelerated drying mode, a normal mode and an energy-saving mode.
  • the clothes dryer performs the drying work according to the drying mode selected by the user.
  • the accelerated drying mode or the normal mode Control the start and stop of the compressor according to the outlet temperature of the condenser and the temperature of the compressor discharge port, control the start and stop of the electric heating element according to the outlet temperature of the condenser and the temperature of the electric heating element, and when the compressor stops working, the electric heating
  • the electric heating element stops working, and the compressor starts and stops according to the outlet temperature of the condenser and the temperature of the exhaust port of the compressor.
  • Three drying modes are provided for users to choose, which improves the flexibility of the dryer; in the accelerated drying mode and the normal mode, the electric heating element assists the compressor to heat, which improves the drying efficiency; Therefore, in the energy-saving mode, only the compressor needs to work, saving energy and reducing emissions; according to the condenser outlet temperature, the compressor discharge port temperature and the temperature at the electric heating element, the compressor and electric heating element are controlled to start and stop. Precisely control the drying temperature in each drying mode, avoid over-drying or under-drying, improve the drying effect, and protect the clothes from damage.
  • the controller of the dryer invokes a program instruction corresponding to the accelerated drying mode.
  • the compressor will be turned off and stop working, but when the compressor stops working, the electric If the heating element does not meet the closing conditions, it will also be turned off to avoid excessive drying of the dryer and effectively protect the clothes.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature is 78°C
  • the compressor shutdown temperature corresponding to the compressor discharge port temperature is 100°C.
  • the temperature of the gas discharged from the compressor is higher than the temperature at the condenser outlet, so the compressor shutdown temperature corresponding to the condenser outlet temperature is also lower than the compressor shutdown temperature corresponding to the compressor discharge temperature.
  • the compressor will stop working, which improves the accuracy of drying temperature control in the cylinder and effectively avoids the overdrying.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature and the compressor shutdown temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the temperature of the gas entering the inner cylinder will gradually decrease. Therefore, the outlet temperature of the condenser and the temperature of the exhaust port of the compressor satisfy the corresponding compressor requirements at the same time.
  • the compressor will only turn on when the temperature is turned on, preventing the dryer from over drying.
  • the compressor opening temperature corresponding to the condenser outlet temperature is 55°C
  • the compressor opening temperature corresponding to the compressor discharge port temperature is 90°C.
  • the compressor opening temperature corresponding to the condenser outlet temperature and the compressor opening temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the electric heating element assists the heat pump system to heat the gas entering the inner cylinder, so as to improve the drying efficiency, especially in the low temperature environment, the drying efficiency can be increased by 20%, which solves the problem of low working efficiency of the compressor when the ambient temperature is low in the related art.
  • the electric heating element will be selectively turned off when heated to a certain extent, which can not only play the role of auxiliary heating, but also avoid over-drying and save energy and reduce emissions.
  • the electric heating element is turned off.
  • the electric heating element and the compressor work at the same time, the electric heating element is preferentially turned off. In the actual use process, the compressor starts for a long time, and it is necessary to minimize the number of compressor stops to improve the working efficiency of the dryer.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser is 70°C
  • the closing temperature of the electric heating element corresponding to the temperature at the electric heating element is 95°C.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser should be lower than the closing temperature of the compressor corresponding to the outlet temperature of the condenser, so that the electric heating element can be turned off preferentially.
  • the electric heating element stops working, which improves the accuracy of drying temperature control in the cylinder and effectively avoids the overdrying.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser and the closing temperature of the electric heating element corresponding to the temperature at the electric heating element are not limited to the above temperature values, and can be comprehensively determined according to parameters such as the capacity of the dryer.
  • the temperature of the gas provided by the compressor does not meet the requirements for use, and the temperature of the gas entering the inner cylinder may gradually decrease.
  • the electric heating element will be turned on, so as to avoid excessive drying of the clothes dryer and ensure that the temperature entering the inner cylinder can be raised in time.
  • the turn-on temperature of the electric heating element corresponding to the outlet temperature of the condenser is 55°C
  • the turn-on temperature of the electric heating element corresponding to the temperature at the electric heating element is 70°C.
  • the opening temperature of the electric heating element corresponding to the outlet temperature of the condenser and the opening temperature of the electric heating element corresponding to the temperature at the electric heating element are not limited to the above temperature values, and can be comprehensively determined according to parameters such as the capacity of the dryer.
  • the controller of the clothes dryer invokes a program instruction corresponding to the general mode.
  • the compressor is turned off.
  • the electric heating element will also be turned off if it does not meet the closing conditions, so as to avoid excessive drying of the clothes dryer and effectively protect the clothes.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature is 78°C
  • the compressor shutdown temperature corresponding to the compressor discharge port temperature is 100°C.
  • the temperature of the gas discharged through the compressor is higher than the temperature at the condenser outlet, so the compressor shutdown temperature corresponding to the condenser outlet temperature is also lower than the compressor shutdown temperature corresponding to the compressor discharge temperature.
  • the compressor will stop working, which improves the accuracy of drying temperature control in the cylinder and effectively avoids the overdrying.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature and the compressor shutdown temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the temperature of the gas entering the inner cylinder will gradually decrease. Therefore, the outlet temperature of the condenser and the temperature of the exhaust port of the compressor satisfy the corresponding compressor requirements at the same time.
  • the compressor will only turn on when the temperature is turned on, preventing the dryer from over drying.
  • the compressor opening temperature corresponding to the condenser outlet temperature is 55°C
  • the compressor opening temperature corresponding to the compressor discharge port temperature is 90°C.
  • the compressor opening temperature corresponding to the condenser outlet temperature and the compressor opening temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the electric heating element assists the heat pump system to heat the gas entering the inner cylinder, so as to improve the drying efficiency, especially in the low temperature environment, the drying efficiency can be increased by 20%, which solves the problem of low working efficiency of the compressor when the ambient temperature is low in the related art.
  • the problem
  • the electric heating element will be selectively turned off when heated to a certain extent, which can not only play the role of auxiliary heating, but also avoid over-drying and save energy and reduce emissions.
  • the electric heating element is turned off.
  • the electric heating element and the compressor work at the same time, the electric heating element is preferentially turned off.
  • the compressor starts for a long time, and it is necessary to minimize the number of compressor stops to improve the working efficiency of the dryer.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser is lower than the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser in the accelerated drying mode, and the electric heating element corresponding to the temperature at the electric heating element.
  • the closing temperature of the electric heating element is also lower than the closing temperature of the electric heating element corresponding to the temperature of the electric heating element in the accelerated drying mode, so that the general mode can save energy than the accelerated drying mode, but the drying efficiency is slightly weaker than that of the accelerated drying mode.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser is 60°C
  • the closing temperature of the electric heating element corresponding to the temperature at the electric heating element is 90°C.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser should be lower than the closing temperature of the compressor corresponding to the outlet temperature of the condenser, so that the electric heating element can be turned off preferentially.
  • the electric heating element stops working, which improves the accuracy of drying temperature control in the cylinder and effectively avoids overdrying.
  • the closing temperature of the electric heating element corresponding to the outlet temperature of the condenser and the closing temperature of the electric heating element corresponding to the temperature at the electric heating element are not limited to the above temperature values, and can be comprehensively determined according to parameters such as the capacity of the dryer.
  • the temperature of the gas provided by the compressor does not meet the requirements for use, and the temperature of the gas entering the inner cylinder may gradually decrease.
  • the electric heating element will be turned on, so as to avoid excessive drying of the clothes dryer and ensure that the temperature entering the inner cylinder can be raised in time.
  • the turn-on temperature of the electric heating element corresponding to the outlet temperature of the condenser is 50°C
  • the turn-on temperature of the electric heating element corresponding to the temperature at the electric heating element is 65°C.
  • the opening temperature of the electric heating element corresponding to the outlet temperature of the condenser and the opening temperature of the electric heating element corresponding to the temperature at the electric heating element are not limited to the above temperature values, and can be comprehensively determined according to parameters such as the capacity of the dryer.
  • the opening temperature of the electric heating element corresponding to the outlet temperature of the condenser is lower than the opening temperature of the electric heating element corresponding to the outlet temperature of the condenser in the accelerated drying mode, and the electric heating element corresponding to the temperature at the electric heating element.
  • the opening temperature of the heating element is also lower than the opening temperature of the electric heating element corresponding to the temperature of the electric heating element in the accelerated drying mode, so that the general mode can save energy than the accelerated drying mode, but the drying efficiency is slightly weaker than that of the accelerated drying mode.
  • the controller of the clothes dryer invokes a program instruction corresponding to the energy-saving mode.
  • the electric heating element stops working, and either the condenser outlet temperature or the compressor discharge outlet temperature satisfies The compressor is turned off when the corresponding compressor off temperature is reached.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature is 78°C
  • the compressor shutdown temperature corresponding to the compressor discharge port temperature is 100°C.
  • the temperature of the gas discharged from the compressor is higher than the temperature at the condenser outlet, so the compressor shutdown temperature corresponding to the condenser outlet temperature is also lower than the compressor shutdown temperature corresponding to the compressor discharge temperature.
  • the compressor will stop working, which improves the accuracy of drying temperature control in the cylinder and effectively avoids the overdrying.
  • the compressor shutdown temperature corresponding to the condenser outlet temperature and the compressor shutdown temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the temperature of the gas entering the inner cylinder will gradually decrease. Therefore, the outlet temperature of the condenser and the temperature of the exhaust port of the compressor satisfy the corresponding compressor requirements at the same time.
  • the compressor will only turn on when the temperature is turned on, preventing the dryer from over drying.
  • the compressor opening temperature corresponding to the condenser outlet temperature is 55°C
  • the compressor opening temperature corresponding to the compressor discharge port temperature is 90°C.
  • the compressor opening temperature corresponding to the condenser outlet temperature and the compressor opening temperature corresponding to the compressor discharge port temperature are not limited to the above temperature values, and may be comprehensively determined according to parameters such as the capacity of the dryer.
  • the drying time needs to be precisely controlled.
  • the additional drying is determined according to the load, the ambient temperature and the drying level coefficient. coefficient, and then determine the drying time in the energy-saving mode according to the drying coefficient. The smaller the drying coefficient, the longer the drying time; the larger the drying coefficient, the shorter the drying time.
  • different load amounts correspond to different load gears
  • each load gear corresponds to a load proportional coefficient
  • the drying coefficient load proportional coefficient * ambient temperature * drying grade coefficient/20.
  • the amount of load it is divided into four levels, namely, small load, medium load, medium and large load, and large load, and the load weights of small load, medium load, medium and large load, and large load are in order.
  • the load proportional coefficient corresponding to the small load is 1.5
  • the load proportional coefficient corresponding to the medium load is 1.2
  • the proportional coefficient corresponding to the medium and large load is 1, and the proportional coefficient corresponding to the large load is 0.8.
  • Each load level corresponds to a weight range of clothes, and the dryer determines the load proportional coefficient based on the judgment of the weight of the clothes placed in the inner tub.
  • the drying level is usually divided into two levels: storage and ready-to-wear.
  • the drying level coefficient corresponding to storage is 2, and the drying level coefficient corresponding to wearing is 3.
  • the outlet temperature of the condenser is similar to the ambient temperature (that is, the ambient temperature). Therefore, the outlet temperature of the condenser before heating is taken as the above-mentioned ambient temperature, and the temperature detection element arranged at the outlet of the condenser is used, namely Yes, there is no need to install a sensor for detecting the ambient temperature, which reduces the cost.

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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)

Abstract

一种干衣机的烘干方法及干衣机，涉及干衣机技术领域。提供了三种烘干模式供用户选择，提高了干衣机使用的灵活性；在加速烘干模式和一般模式下，电加热件辅助压缩机加热，提高了烘干效率；由于电加热件能耗高，因此，在节能模式下，只需压缩机工作，节能减排；根据冷凝器出口温度、压缩机排气口温度和电加热件处温度控制压缩机和电加热件的启停，能精确控制每种烘干模式下的烘干温度，避免过烘或者烘不干，改善烘干效果，保护衣物不受损。

Description

一种干衣机的烘干方法及干衣机
本申请要求在2021年3月23日提交中国专利局、申请号为202110309950.2的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及干衣机技术领域，例如涉及一种干衣机的烘干方法及干衣机。
背景技术
相关技术中的热泵式干衣机中设置有如下的气体循环通道：由热泵循环系统中的冷凝器进行加热的加热气体被送入装有衣物的滚筒内，从衣物中夺取了水分的湿气体被送回到蒸发器处进行除湿，除湿后的气体再次由冷凝器加热，并送入干燥室内。
目前，通过热泵系统加热气体进行烘干衣物，可以保持50℃-60℃的低温状态来烘干衣物，在最大程度上减少对衣物的损伤，尤其是一些精细的衣物，且还能节能环保。但是单纯地使用热泵系统加热烘干衣物的方法也存在一些问题，比如压缩机在环温较低时，工作效率会降低，造成衣物烘不干或烘干衣物所需时间过长，另外也会出现衣物过度烘干的情况，不但对衣物有一定的损伤，而且也会造成资源浪费。在相关技术中，为了解决上述问题，提高烘干速度和干衣机的工作效率，在热泵干衣机内设置加热丝或者加热管等加热件进行辅助加热，通过加热件与热泵系统组合，缩短干衣机的升温时间，进而缩短烘干时间。但是如果加热件与热泵系统不能合理的配合使用，不但不会提高工作效率，还有可能出现衣物过度烘干的情况，对衣物有一定的损伤，也会造成资源浪费。
因此，亟需提供一种干衣机的烘干方法以解决上述问题。
发明内容
本申请提供一种干衣机的烘干方法，提高烘干效率，改善烘干效果，避免 过度烘干和资源浪费。
本申请还提供一种干衣机，工作效率高，烘干效果好，节能减排，提高了用户使用的满意度。
本申请采用以下技术方案：
第一方面，本申请提供一种干衣机的烘干方法，干衣机包括热泵系统和电加热件，所述热泵系统包括压缩机、冷凝器、蒸发器和节流装置，所述烘干方法包括加速烘干模式、一般模式和节能模式；
在所述加速烘干模式或所述一般模式下，根据冷凝器出口温度和压缩机排气口温度控制所述压缩机的启停，根据所述冷凝器出口温度和电加热件处温度控制所述电加热件的启停，且在所述压缩机停止工作时，所述电加热件停止工作；
在所述节能模式下，所述电加热件停止工作，根据所述冷凝器出口温度和所述压缩机排气口温度控制所述压缩机的启停。
第二方面，本申请还提供一种根据上述第一方面所述的干衣机烘干方法的干衣机，所述干衣机包括热泵系统和电加热件，所述热泵系统包括压缩机、冷凝器、蒸发器和节流装置；
所述干衣机还包括操作面板，所述操作面板上设有供用户选择加速烘干模式、一般模式和节能模式的模式按键。
附图说明
图1是本申请实施例提供的干衣机的烘干方法的流程图。
具体实施方式
下面将结合附图对本申请实施例的技术方案做详细描述。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成 一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
针对相关技术中，干衣机烘干效率低，可能出现衣物过度烘干或者烘不干，对衣物造成损伤，干衣机能耗高的问题，本实施例提供了一种干衣机的烘干方法及干衣机以解决上述技术问题。
本实施例提供的干衣机包括热泵系统和电加热件，热泵系统包括压缩机、冷凝器、蒸发器和节流装置。示例性地，制冷剂循环管道依次将蒸发器、压缩机、冷凝器、节流装置再至蒸发器连接，在冷凝器出气口与干衣机的内筒连接的管路上设置电加热件，以实现辅助加热进入内筒内的气体。在本实施例中，电加热件可以为电加热丝，也可以为电加热管，在此不做限定。
干衣机可以执行加速烘干模式、一般模式和节能模式三种烘干模式，干衣机还包括操作面板，操作面板上设有供用户选择加速烘干模式、一般模式和节能模式的模式按键。示例性地，操作面板上设置触摸显示屏，可以在触摸显示屏上设置三个单独的触摸型的模式按键，每个模式按键对应一种烘干模式，也可以设置一个触摸型的模式按键，以切换不同的烘干模式，并且会在该模式按键上显示当前的烘干模式的字体。
在其他实施例中，也可以在操作面板上设置机械式的模式按键，机械式的 模式按键可以设置三个，每个模式按键对应一种烘干模式，也可以设置一个机械式的模式按键，以切换不同的烘干模式，对应的操作面板上设置显示当前的烘干模式字体的区域，便于用户了解当前的烘干模式。
本申请提供的干衣机，用户能根据需要选择三种烘干模式中的一种，提高了干衣机使用的灵活性，且烘干效果能满足用户需求，节能减排，提高了用户使用的满意度。
电加热件与热泵系统合理的配合使用才能提高干衣机的工作效率，改善烘干效果，本实施例提供了一种干衣机的烘干方法实现了电加热件与热泵系统的合理配合，以达到上述的技术效果。
如图1所示，在本实施例中，烘干方法包括加速烘干模式、一般模式和节能模式，干衣机根据用户选择的烘干模式进行烘干工作，在加速烘干模式或一般模式下，根据冷凝器出口温度和压缩机排气口温度控制压缩机的启停，根据冷凝器出口温度和电加热件处温度控制电加热件的启停，且在压缩机停止工作时，电加热件停止工作；在所述节能模式下，电加热件停止工作，根据冷凝器出口温度和压缩机排气口温度控制压缩机的启停。
提供了三种烘干模式供用户选择，提高了干衣机使用的灵活性；在加速烘干模式和一般模式下，电加热件辅助压缩机加热，提高了烘干效率；由于电加热件能耗高，因此，在节能模式下，只需压缩机工作，节能减排；根据冷凝器出口温度、压缩机排气口温度和电加热件处温度控制压缩机和电加热件的启停，能精确控制每种烘干模式下的烘干温度，避免过烘或者烘不干，改善烘干效果，保护衣物不受损。
在本实施例中，若用户选择加速烘干模式，则干衣机的控制器调用加速烘干模式对应的程序指令。在干衣机烘干过程中，冷凝器出口温度和压缩机排气口温度中的任一个满足相对应的压缩机关闭温度时，压缩机便关闭停止工作，但是在压缩机停止工作时，电加热件不符合关闭条件也要随之关闭，避免干衣机出现过度烘干，有效保护衣物。
可选地，冷凝器出口温度对应的压缩机关闭温度为78℃，压缩机排气口温度对应的压缩机关闭温度为100℃。经过压缩机排出的气体的温度要高于冷凝器出口处的温度，因此冷凝器出口对应的压缩机关闭温度也要低于压缩机排气口温度对应的压缩机关闭温度。在检测冷凝器出口温度为78℃甚至高于78℃或者压缩机排气口温度为100℃甚至高于100℃时，压缩机停止工作，提高了筒内烘干温度控制的精确性，有效避免了过度烘干。在其他实施例中，冷凝器出口温度对应的压缩机关闭温度和压缩机排气口温度对应的压缩机关闭温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
压缩机停止工作后，随着干衣机的运行，进入到内筒内的气体的温度会逐渐降温，因此，在冷凝器出口温度和所述压缩机排气口温度同时满足相对应的压缩机开启温度时，压缩机才会开启，避免干衣机过度烘干。
可选地，冷凝器出口温度对应的压缩机开启温度为55℃，压缩机排气口温度对应的压缩机开启温度为90℃。在检测到冷凝器出口温度为55℃甚至低于55℃，同时压缩机排气口温度为90℃甚至低于90℃，证明进入内筒内的气体的温度达不到要求的烘干温度了，压缩机开启，在节能的同时，还避免了内筒内衣物烘不干的问题。在其他实施例中，冷凝器出口温度对应的压缩机开启温度和压缩机排气口温度对应的压缩机开启温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
电加热件辅助热泵系统加热进入内筒内的气体，以提高烘干效率，尤其是在低温环境下，烘干效率能提高20％，解决了相关技术中环境温度低时，压缩机工作效率低的问题。当然，为了避免过度烘干，电加热件加热到一定程度会选择性的关闭，进而既能起到辅助加热的作用，还能避免过度烘干，节能减排。示例性地，在冷凝器出口温度和电加热件处温度中的任一个满足相对应的电加热件关闭温度时，电加热件关闭。在电加热件和压缩机同时工作时，优先关闭电加热件。在实际使用过程中，压缩机启动时间长，需要尽量减少压缩机停止的次数，以提高干衣机的工作效率。
可选地，冷凝器出口温度对应的电加热件关闭温度为70℃，电加热件处温度对应的电加热件关闭温度为95℃。冷凝器出口温度对应的电加热件关闭温度要低于冷凝器出口温度对应的压缩机关闭温度，以便优先关闭电加热件。在检测冷凝器出口温度为70℃甚至高于70℃或者电加热件处温度为95℃甚至高于95℃时，电加热件停止工作，提高了筒内烘干温度控制的精确性，有效避免了过度烘干。在其他实施例中，冷凝器出口温度对应的电加热件关闭温度和电加热件处温度对应的电加热件关闭温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
电加热件停止工作后，随着干衣机的运行，压缩机提供的气体的温度达不到使用要求，进入到内筒内的气体的温度可能会逐渐降温，因此，在冷凝器出口温度和电加热件处温度同时满足相对应的电加热件开启温度时，电加热件才会开启，避免干衣机过度烘干，还能保证及时提高进入内筒内的温度。
可选地，冷凝器出口温度对应的电加热件开启温度为55℃，电加热件处温度对应的电加热件开启为70℃。在检测到冷凝器出口温度为55℃甚至低于55℃，同时电加热件处温度为70℃甚至低于70℃，证明进入内筒内的气体的温度达不到要求的烘干温度了，电加热件开启，在节能的同时，还避免了内筒内衣物烘不干的问题。在其他实施例中，冷凝器出口温度对应的电加热件开启温度和电加热件处温度对应的电加热件开启温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
在本实施例中，若用户选择一般模式，则干衣机的控制器调用一般模式对应的程序指令。在干衣机烘干过程中，冷凝器出口温度和压缩机排气口温度中的任一个满足相对应的压缩机关闭温度时，压缩机关闭。但是在压缩机停止工作时，电加热件不符合关闭条件也要随之关闭，避免干衣机出现过度烘干，有效保护衣物。
可选地，冷凝器出口温度对应的压缩机关闭温度为78℃，压缩机排气口温度对应的压缩机关闭温度为100℃。经过压缩机排出的气体的温度要高于冷凝器 出口处的温度，因此冷凝器出口对应的压缩机关闭温度也要低于压缩机排气口温度对应的压缩机关闭温度。在检测冷凝器出口温度为78℃甚至高于78℃或者压缩机排气口温度为100℃甚至高于100℃时，压缩机停止工作，提高了筒内烘干温度控制的精确性，有效避免了过度烘干。在其他实施例中，冷凝器出口温度对应的压缩机关闭温度和压缩机排气口温度对应的压缩机关闭温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
压缩机停止工作后，随着干衣机的运行，进入到内筒内的气体的温度会逐渐降温，因此，在冷凝器出口温度和所述压缩机排气口温度同时满足相对应的压缩机开启温度时，压缩机才会开启，避免干衣机过度烘干。
可选地，冷凝器出口温度对应的压缩机开启温度为55℃，压缩机排气口温度对应的压缩机开启温度为90℃。在检测到冷凝器出口温度为55℃甚至低于55℃，同时压缩机排气口温度为90℃甚至低于90℃，证明进入内筒内的气体的温度达不到要求的烘干温度了，压缩机开启，在节能的同时，还避免了内筒内衣物烘不干的问题。在其他实施例中，冷凝器出口温度对应的压缩机开启温度和压缩机排气口温度对应的压缩机开启温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
电加热件辅助热泵系统加热进入内筒内的气体，以提高烘干效率，尤其是在低温环境下，烘干效率能提高20％，解决了相关技术中环境温度低时，压缩机工作效率低的问题。当然，为了避免过度烘干，电加热件加热到一定程度会选择性的关闭，进而既能起到辅助加热的作用，还能避免过度烘干，节能减排。示例性地，在冷凝器出口温度和电加热件处温度中的任一个满足相对应的电加热件关闭温度时，电加热件关闭。在电加热件和压缩机同时工作时，优先关闭电加热件。在实际使用过程中，压缩机启动时间长，需要尽量减少压缩机停止的次数，以提高干衣机的工作效率。此外，在一般模式下，冷凝器出口温度对应的电加热件关闭温度要低于在加速烘干模式下的冷凝器出口温度对应的电加热件关闭温度，以及电加热件处温度对应的电加热件关闭温度也低于在加速烘 干模式下的电加热件处温度对应的电加热件关闭温度，以实现一般模式比加速烘干模式节能，但是烘干效率稍弱于加速烘干模式。
可选地，冷凝器出口温度对应的电加热件关闭温度为60℃，电加热件处温度对应的电加热件关闭温度为90℃。冷凝器出口温度对应的电加热件关闭温度要低于冷凝器出口温度对应的压缩机关闭温度，以便优先关闭电加热件。在检测冷凝器出口温度为60℃甚至高于60℃或者电加热件处温度为90℃甚至高于90℃时，电加热件停止工作，提高了筒内烘干温度控制的精确性，有效避免了过度烘干。在其他实施例中，冷凝器出口温度对应的电加热件关闭温度和电加热件处温度对应的电加热件关闭温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
电加热件停止工作后，随着干衣机的运行，压缩机提供的气体的温度达不到使用要求，进入到内筒内的气体的温度可能会逐渐降温，因此，在冷凝器出口温度和电加热件处温度同时满足相对应的电加热件开启温度时，电加热件才会开启，避免干衣机过度烘干，还能保证及时提高进入内筒内的温度。
可选地，冷凝器出口温度对应的电加热件开启温度为50℃，电加热件处温度对应的电加热件开启为65℃。在检测到冷凝器出口温度为50℃甚至低于50℃，同时电加热件处温度为65℃甚至低于65℃，证明进入内筒内的气体的温度达不到要求的烘干温度了，电加热件开启，在节能的同时，还避免了内筒内衣物烘不干的问题。在其他实施例中，冷凝器出口温度对应的电加热件开启温度和电加热件处温度对应的电加热件开启温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。此外，在一般模式下，冷凝器出口温度对应的电加热件开启温度要低于在加速烘干模式下的冷凝器出口温度对应的电加热件开启温度，以及电加热件处温度对应的电加热件开启温度也低于在加速烘干模式下的电加热件处温度对应的电加热件开启温度，以实现一般模式比加速烘干模式节能，但是烘干效率稍弱于加速烘干模式。
在本实施例中，若用户选择节能模式，则干衣机的控制器调用节能模式对 应的程序指令。在干衣机烘干过程中，由于电加热件功耗高，为了达到节能的目的，在节能模式下，电加热件停止工作，冷凝器出口温度和压缩机排气口温度中的任一个满足相对应的压缩机关闭温度时，压缩机关闭。
可选地，冷凝器出口温度对应的压缩机关闭温度为78℃，压缩机排气口温度对应的压缩机关闭温度为100℃。经过压缩机排出的气体的温度要高于冷凝器出口处的温度，因此冷凝器出口对应的压缩机关闭温度也要低于压缩机排气口温度对应的压缩机关闭温度。在检测冷凝器出口温度为78℃甚至高于78℃或者压缩机排气口温度为100℃甚至高于100℃时，压缩机停止工作，提高了筒内烘干温度控制的精确性，有效避免了过度烘干。在其他实施例中，冷凝器出口温度对应的压缩机关闭温度和压缩机排气口温度对应的压缩机关闭温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
压缩机停止工作后，随着干衣机的运行，进入到内筒内的气体的温度会逐渐降温，因此，在冷凝器出口温度和所述压缩机排气口温度同时满足相对应的压缩机开启温度时，压缩机才会开启，避免干衣机过度烘干。
可选地，冷凝器出口温度对应的压缩机开启温度为55℃，压缩机排气口温度对应的压缩机开启温度为90℃。在检测到冷凝器出口温度为55℃甚至低于55℃，同时压缩机排气口温度为90℃甚至低于90℃，证明进入内筒内的气体的温度达不到要求的烘干温度了，压缩机开启，在节能的同时，还避免了内筒内衣物烘不干的问题。在其他实施例中，冷凝器出口温度对应的压缩机开启温度和压缩机排气口温度对应的压缩机开启温度不局限于上述温度值，可以根据干衣机的容量等参数综合进行确定。
可选地，为了避免干衣机过度烘干或者烘不干的问题，需要精确控制烘干时间，在本实施例中，在节能模式下，根据负载量、环温和烘干等级系数确定加烘系数，再根据加烘系数确定节能模式下的烘干时间。加烘系数越小，烘干时间越长，加烘系数越大，烘干时间越短。
可选地，不同的负载量对应不同的负载档位，每个负载档位对应一个负载 比例系数，加烘系数＝负载比例系数*环温*烘干等级系数/20。示例性地，在本实施例中，根据负载量分为四个等级分别为小负载、中负载、中大负载和大负载，且小负载、中负载、中大负载和大负载的负载重量依次增加，小负载对应的负载比例系数为1.5，中负载对应的负载比例系数为1.2，中大负载对应的比例系数为1，大负载对应的比例系数为0.8。每个负载量的等级均对应一个衣物的重量范围，干衣机根据对放入内筒内的衣物重量的判断，确定负载比例系数。烘干等级通常分为储藏和即穿两个等级，储藏对应的烘干等级系数为2，即穿对应的烘干等级系数为3。
在干衣机加热工作前，冷凝器出口温度近似于环温(即环境温度)，因此，将加热前的冷凝器出口温度作为上述的环温，使用设置于冷凝器出口处的温度检测件即可，无需再设置用于检测环境温度的传感器，降低了成本。

Claims (10)

  1. 一种干衣机的烘干方法，干衣机包括热泵系统和电加热件，所述热泵系统包括压缩机、冷凝器、蒸发器和节流装置，所述烘干方法包括加速烘干模式、一般模式和节能模式；
    在所述加速烘干模式或所述一般模式下，根据冷凝器出口温度和压缩机排气口温度控制所述压缩机的启停，根据所述冷凝器出口温度和电加热件处温度控制所述电加热件的启停，且在所述压缩机停止工作的情况下，所述电加热件停止工作；
    在所述节能模式下，所述电加热件停止工作，根据所述冷凝器出口温度和所述压缩机排气口温度控制所述压缩机的启停。
  2. 根据权利要求1所述的干衣机的烘干方法，其中，在所述加速烘干模式、所述一般模式或所述节能模式下，所述冷凝器出口温度和所述压缩机排气口温度中的任一个满足相对应的压缩机关闭温度时，所述压缩机关闭；
    所述冷凝器出口温度和所述压缩机排气口温度同时满足相对应的压缩机开启温度时，所述压缩机开启。
  3. 根据权利要求2所述的干衣机的烘干方法，其中，在所述加速烘干模式、所述一般模式和所述节能模式下，所述冷凝器出口温度对应的所述压缩机关闭温度均为78℃，所述压缩机排气口温度对应的所述压缩机关闭温度均为100℃；
    所述冷凝器出口温度对应的压缩机开启温度均为55℃，所述压缩机排气口温度对应的所述压缩机开启温度均为90℃。
  4. 根据权利要求1所述的干衣机的烘干方法，其中，在所述加速烘干模式或所述一般模式下，所述冷凝器出口温度和所述电加热件处温度中的任一个满足相对应的电加热件关闭温度时，所述电加热件关闭；
    所述冷凝器出口温度和所述电加热件处温度同时满足相对应的电加热件开启温度时，所述电加热件开启。
  5. 根据权利要求4所述的干衣机的烘干方法，其中，在所述加速烘干模式下，所述冷凝器出口温度对应的所述电加热件关闭温度为70℃，所述电加热件 处温度对应的电加热件关闭温度为95℃；
    所述冷凝器出口温度对应的电加热件开启温度为55℃，所述电加热件处温度对应的电加热件开启为70℃。
  6. 根据权利要求4所述的干衣机的烘干方法，其中，在所述一般模式下，所述冷凝器出口温度对应的所述电加热件关闭温度为60℃，所述电加热件处温度对应的电加热件关闭温度为90℃；
    所述冷凝器出口温度对应的电加热件开启温度为50℃，所述电加热件处温度对应的电加热件开启为65℃。
  7. 根据权利要求1所述的干衣机的烘干方法，其中，在所述节能模式下，根据负载量、环温和烘干等级系数确定加烘系数，再根据所述加烘系数确定所述节能模式下的烘干时间。
  8. 根据权利要求7所述的干衣机的烘干方法，其中，不同的所述负载量对应不同的负载档位，每个所述负载档位对应一个负载比例系数，加烘系数＝负载比例系数*环温*烘干等级系数/20。
  9. 根据权利要求7所述的干衣机的烘干方法，其中，所述环温为加热前的所述冷凝器出口温度。
  10. 一种根据权利要求1-9任一项所述的干衣机烘干方法的干衣机，所述干衣机包括热泵系统和电加热件，所述热泵系统包括压缩机、冷凝器、蒸发器和节流装置；
    所述干衣机还包括操作面板，所述操作面板上设有供用户选择加速烘干模式、一般模式和节能模式的模式按键。
PCT/CN2022/082393 2021-03-23 2022-03-23 一种干衣机的烘干方法及干衣机 WO2022199595A1 (zh)

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