WO2020097831A1 - 闭式热泵干衣机*** - Google Patents

闭式热泵干衣机*** Download PDF

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Publication number
WO2020097831A1
WO2020097831A1 PCT/CN2018/115463 CN2018115463W WO2020097831A1 WO 2020097831 A1 WO2020097831 A1 WO 2020097831A1 CN 2018115463 W CN2018115463 W CN 2018115463W WO 2020097831 A1 WO2020097831 A1 WO 2020097831A1
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WIPO (PCT)
Prior art keywords
heat pump
condenser
evaporator
clothes
compression
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PCT/CN2018/115463
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English (en)
French (fr)
Inventor
杨明洪
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广东美的白色家电技术创新中心有限公司
美的集团股份有限公司
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Application filed by 广东美的白色家电技术创新中心有限公司, 美的集团股份有限公司 filed Critical 广东美的白色家电技术创新中心有限公司
Priority to CN201880037321.5A priority Critical patent/CN110799695A/zh
Priority to PCT/CN2018/115463 priority patent/WO2020097831A1/zh
Publication of WO2020097831A1 publication Critical patent/WO2020097831A1/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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • 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 
    • D06F58/22—Lint collecting 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

Definitions

  • This application relates to the technical field of heat pumps, in particular to a closed heat pump dryer system.
  • the heat pump drying system uses the dehumidification capacity of the heat pump to remove moisture in the humid air, such as clothes dryers, dehumidifiers, food and industrial drying equipment. Its working principle is: the wet air is first cooled by the evaporator to become low temperature and low humidity air, and then heated by the condenser to become high temperature and low humidity air.
  • the conventional heat pump dryer system is shown in Figure 1.
  • a single-stage heat pump is used to process the humid air. After dehumidification and temperature increase, the dried hot air is sent into the drum.
  • the latent heat load of dehumidification generally exceeds 70% of the total load, which is the main heat load.
  • the air temperature generally only drops by 3 to 8 ° C; the dehumidified air passes through the condenser At this time, the heat load is all sensible heat load, and the air temperature can rise by 20-40 ° C.
  • Conventional heat pump dryers generally use R134a or R290 as the refrigerant.
  • the refrigerant condenses and releases heat in the condenser close to a constant temperature process.
  • the condensation temperature needs to be higher than the outlet air temperature, resulting in a higher condensation temperature and the operating condition of the compressor 7 ' A higher compression ratio is required, and the power consumption is larger, resulting in lower energy efficiency of the system.
  • This application aims to solve at least one of the technical problems existing in the prior art or related technologies.
  • the purpose of this application is to provide a closed-type heat pump dryer system to sequentially cool and dehumidify and heat the damp and hot air, to achieve the stepwise utilization of the air temperature energy, improve the energy efficiency of the system cycle, reduce energy consumption and drying time.
  • the embodiments of the present application provide a closed-type heat pump dryer system, including a first heat pump system, a second heat pump system, a circulating air duct, and a clothes drum
  • the first heat pump system includes a first refrigeration A refrigerant line and a first condenser, a first throttling device, a first evaporator, and a first compression device that are sequentially provided on the first refrigerant line
  • the second heat pump system includes a second refrigerant line And a second condenser, a second throttling device, a second evaporator, and a second compression device that are sequentially provided on the second refrigerant line
  • the circulating air channel sequentially communicates with the first evaporator
  • the second evaporator, the second condenser and the first condenser communicate with each other, and the circulation air duct extending from the first condenser communicates with the air inlet of the clothes drum and extends from the first
  • the first compression device is provided with a first suction port and a first exhaust port
  • the second compression device is provided with a second suction port and a second exhaust port
  • the first compression The device and the second compression device have independent suction and discharge pressures, respectively.
  • the first compression device is provided with a first compression cavity
  • the second compression device is provided with a second compression cavity
  • the first compression cavity and the second compression cavity are arranged in parallel in the same compression housing
  • the first compression chamber and the second compression chamber are connected to the motor through the same shaft;
  • the first compression chamber is provided with a first suction port and a first exhaust port, and the second compression chamber is provided with a first Two intake ports and a second exhaust port;
  • an isolation device is provided between the first intake port and the second intake port, and an isolation device is provided between the first exhaust port and the second exhaust port To ensure that the first compression chamber and the second compression chamber have independent suction and discharge pressures, respectively.
  • the first exhaust port communicates with the first condenser
  • the first suction port communicates with the first evaporator
  • the second exhaust port communicates with the second condenser
  • the second suction port communicates with the second evaporator.
  • the first evaporator includes a first shell and a first evaporation tube provided in the first shell, and the outer surface of the first evaporation tube has a number of fins arranged along its axial direction sheet.
  • the fins are corrugated fins, and the plurality of fins are evenly distributed on the outer surface of the first evaporation tube.
  • the corrugated fins can enhance the heat transfer coefficient, and at the same time reduce the condensation water beads being blown by the wind The first condenser.
  • the flow direction of the refrigerant in the first evaporating tube and the flow direction of the wind flowing through the first housing are arranged counter-currently, and the counter-current arrangement is adopted to enhance the heat exchange and dehumidification capacity of the first evaporator.
  • the second evaporator includes a second housing and a second evaporating tube provided in the second housing.
  • the refrigerant in the second evaporating tube flows and flows through the second housing
  • the wind direction of the body is arranged downstream, thereby increasing the amount of dehumidification close to the windward surface of the second evaporator and reducing the amount of dehumidification close to the air outlet surface, so as to reduce the condensation water beads being blown toward the second condenser.
  • the evaporation temperature in the first evaporator is more than 2 ° C higher than the evaporation temperature in the second evaporator, and the condensation temperature in the first condenser is higher than the condensation temperature in the second condenser by 5 °C above.
  • auxiliary condenser which is provided on the first refrigerant line between the first condenser and the first throttle device; outside the auxiliary condenser A heat dissipation fan is provided, and the heat dissipation fan introduces fresh air from the outside of the dryer to blow to the auxiliary condenser.
  • the clothes dryer includes a clothes drying cabinet and the clothes drying drum provided in the clothes drying cabinet.
  • the first heat pump system, the second heat pump system, and the circulating air duct are all placed in the dryer Inside the clothes cabinet; a circulation fan is provided on the circulation air channel between the air inlet of the clothes dryer and the first condenser; and between the air outlet of the clothes dryer and the first evaporator
  • the circulation air channel is provided with a filter net for collecting clothing fluff; the bottom of the clothes drying cabinet is provided with a water receiving tray for collecting condensed water evaporated and condensed.
  • the clothes drying drum is driven by a working motor, and the working motor is a forward and reverse motor.
  • a closed-type heat pump clothes dryer system provided by an embodiment of the present application, through a reasonable connection between the first heat pump system and the second heat pump system, the circulating air channel is sequentially connected with the first evaporator, the second evaporator, and the second condensate along the wind direction
  • the humidifier and the first condenser communicate with each other, and the humid and hot air discharged from the drying drum passes through the first evaporator and the second evaporator in order to cool down and dehumidify in steps, and then passes through the second condenser and the first condenser to step up in temperature, and the air passes through the steps Cooling down and heating up the steps to achieve the purpose of dehumidification and heating, and to achieve the use of air temperature energy steps, the system power consumption is increased by 15% to 35% compared to the single heat pump system; the energy efficiency of the heat pump system cycle is improved, and the dryer is reduced Energy consumption and drying time.
  • Figure 1 is a schematic diagram of a conventional heat pump dryer system in the prior art
  • FIG. 2 is a schematic diagram of the overall connection relationship of a closed heat pump dryer system according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a closed heat pump dryer system according to another embodiment of the present application.
  • FIG. 4 is an internal schematic diagram of the compression device in FIG. 3;
  • FIG. 5 is a schematic diagram of a closed heat pump clothes dryer system according to a third embodiment of this application.
  • connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • connection should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components.
  • multiple means two or more.
  • an embodiment of the present application provides a closed-type heat pump clothes dryer system, including a first heat pump system, a second heat pump system, a circulating air duct 12 and a clothes drum 20, the first
  • the heat pump system includes a first refrigerant line and a first condenser 3, a first throttling device 5, a first evaporator 1, and a first compression device 7, which are sequentially provided on the first refrigerant line to form a circuit.
  • the second heat pump system includes a second refrigerant line and a second condenser 4, a second throttling device 6, a second evaporator 2 and a second compression device which are sequentially arranged on the second refrigerant line to form a circuit 8.
  • Refrigerant circulates in both the first refrigerant pipeline and the second refrigerant pipeline.
  • the first refrigerant pipeline and the second refrigerant pipeline may use the same refrigerant, and the circulating air duct 12 is along the wind direction Communicate with the first evaporator 1, the second evaporator 2, the second condenser 4 and the first condenser 3 in sequence, that is to say, the air flow in the circulating air duct 12 first passes through the first evaporator 1, the first The second evaporator 2 then passes through the second condenser 4 and the first condenser 3, the arrow in the circulation air duct 12 in FIG.
  • the duct 12 communicates with the air inlet of the drying drum 20, and the circulating air duct 12 extending from the first evaporator 1 communicates with the air outlet of the drying drum 20 to form a closed-loop circulating air passage.
  • the inlet air of the first evaporator 1 is humid and hot air, the relative humidity is not less than 60%, the inlet air temperature range is 10-50 °C, the humid and hot air discharged from the drying drum 20 passes through the first evaporator 1 and the second evaporation
  • the condenser 2 performs step cooling and dehumidification, and then passes through the second condenser 4 and the first condenser 3 to step up the temperature in sequence.
  • the air passes through the step cooling and step heating to achieve the purpose of dehumidification and heating, and realizes the energy step utilization of the air temperature.
  • the system power consumption is increased by 15% to 35% compared to the single heat pump system; the energy efficiency of the heat pump system cycle is improved, and the energy consumption and drying time of the dryer are reduced.
  • the first compression device 7 such as the first compressor is provided with a first suction port 13 and a first exhaust port 14, and the second compression device 8 such as the second compression
  • the machine is provided with a second suction port 15 and a second exhaust port 16, that is, two independent compressors, each having an independent suction and discharge pressure; the first exhaust port 14 and the first condenser 3 communicates, the first suction port 13 communicates with the first evaporator 1; the second exhaust port 16 communicates with the second condenser 4, the second suction port 15 communicates with the The second evaporator 2 communicates, so that the first compressor and the first condenser 3, the first throttling device 5, and the first evaporator 1 together form a circulation circuit, and the second compressor and the second condenser 4, the second section The flow device 6 and the second evaporator 2 together form another circulation circuit. Compression can be positive displacement compressor or speed compressor.
  • the first compression device 7 is provided with a first compression cavity 9, and the second compression device 8 is provided with a second compression cavity 10, the The first compression cavity 9 and the second compression cavity 10 are juxtaposed in the same compression housing 11, the first compression cavity 9 and the second compression cavity 10 are connected to the motor through the same shaft; the first compression cavity 9 A first suction port 13 and a first exhaust port 14 are provided, and the second compression chamber 10 is provided with a second suction port 15 and a second exhaust port 16, that is, two parallel side of the common motor and transmission structure
  • an isolation device is provided between the first suction port 13 and the second suction port 15, and an isolation device is provided between the first exhaust port 14 and the second exhaust port 16, to ensure that The first compression chamber 9 and the second compression chamber 10 have independent suction and discharge pressures; the first exhaust port 14 communicates with the first condenser 3, and the first suction port 13 and the first An evaporator 1 is in communication, the second exhaust port 16 is in communication with the
  • the first evaporator 1 includes a first casing and a first evaporation tube provided in the first casing.
  • the outer surface of the first evaporation tube is arranged along its axial direction Fins to increase the heat exchange area.
  • the fin is a corrugated fin, that is, the surface of the fin is corrugated.
  • the corrugated fin is used to increase the surface area of the fin, thereby further increasing the heat transfer Area;
  • the corrugated fins can enhance the heat transfer coefficient, and at the same time reduce the condensed water beads being blown to the condenser by the wind.
  • the refrigerant flow direction in the first evaporator tube and the air flow direction of the air flowing through the first housing are arranged counter-currently to enhance the heat exchange and dehumidification capacity of the first evaporator.
  • Strong heat capacity mainly used to remove sensible heat and partial latent heat of humid air to remove part of moisture in humid air.
  • the second evaporator 2 includes a second housing and a second evaporating tube provided in the second housing, and the refrigerant in the second evaporating tube flows and flows through the second
  • the air flow direction of the casing is arranged downstream, thereby increasing the amount of dehumidification close to the windward surface of the second evaporator and reducing the amount of dehumidification close to the air outlet surface, so as to reduce the condensed water beads being blown toward the condenser, further reducing the temperature of the air and dehumidifying, It is the main component of dehumidification.
  • This arrangement can improve the dehumidification efficiency of the heat pump and reduce energy consumption.
  • both the first condenser 3 and the second condenser 4 include a casing and a condenser tube provided in the casing.
  • the circulating air duct 12 may specifically be a multi-section air pipe.
  • a duct is connected between the second shell of the second evaporator 2 and a duct between the second shell and the shell of the second condenser 4 is connected to the shell of the second condenser 4
  • An air duct is connected to the housing of the first condenser 3, and an air duct is connected between the housing of the first condenser 3 and the air inlet of the outer shell of the drying drum 20.
  • a wind pipe is connected between the air outlet of the shell and the first casing of the first evaporator 1, and the multi-section wind pipes communicate with each other.
  • the first casing, the second casing, the casing of the first condenser 3, the first The shells of the two condensers 4 are used as ventilation channels to participate in the air circulation.
  • the circulating air duct 12 may also adopt an integrated air pipe that passes through the first shell, the second shell, the second condenser 4 shell, and the first condenser 3 shell in this order, and the integrated Both ends of the air pipe extend out of the housing of the first housing and the first condenser 3, and are used to connect the air outlet and air inlet of the outer shell of the clothes drum 20.
  • This embodiment essentially has two independent heat pump cycles with different evaporation temperatures and different condensation temperatures.
  • the evaporation temperature in the first evaporator 1 is higher than the evaporation temperature in the second evaporator 2 by more than 2 ° C.
  • the condensation temperature in the first condenser 3 is higher than the condensation temperature in the second condenser 4 by more than 5 ° C.
  • more than two heat pump systems can also be used for a reasonable arrangement.
  • an auxiliary condenser 17 is further included.
  • the auxiliary condenser 17 is disposed between the first condenser 3 and the first throttle device 5 in the first refrigeration On the auxiliary pipeline; the auxiliary condenser 17 is provided with a cooling fan 18, the cooling fan 18 introduces fresh air from the outside of the dryer for blowing to the auxiliary condenser 17; the external fresh air is introduced through the cooling fan 18, through The cooling fan 18 is turned on to control whether heat is dissipated to the outside world.
  • it can avoid that the condensation temperature in the first condenser 3 is too high to protect the compression device.
  • it can also increase the degree of supercooling to further improve the energy efficiency of the system.
  • the clothes dryer includes a clothes drying cabinet and the clothes drying drum 20 provided in the clothes drying cabinet.
  • the first heat pump system, the second heat pump system, and the circulating air duct are all placed in the Inside the drying cabinet, specifically, a chassis is provided at the bottom of the drying cabinet, and the first heat pump system and the second heat pump system are both installed on the chassis; between the air inlet of the drying drum 20 and the first condenser A circulating fan 19 is provided on the circulating air duct 12; a filtering screen is provided on the circulating air duct 12 between the air outlet of the drying drum 20 and the first evaporator for collecting clothing wool Blast; the bottom of the drying cabinet is provided with a water receiving tray for collecting the condensed water evaporated and condensed by the evaporator; the outer surface of the drying drum 20 is uniformly distributed with a number of small holes, dry hot air enters from the drying cabinet , And enters the drying drum 20 through a number of small holes in the drying drum 20, exchanges heat with the humid air in the drying drum
  • the drying drum 20 is driven by a working motor, and the working motor may be a forward and reverse rotation motor.
  • the forward and reverse rotation motor is used to control the drying drum 20 to perform forward and reverse rotation, thereby preventing large clothes from being wrapped.
  • this embodiment achieves the purpose of dehumidification and heating by step cooling and step heating, and realizes the use of air temperature energy steps, and the system power consumption is increased by 15% to 35% compared to the single heat pump system; The energy efficiency of the heat pump system circulation is improved, and the energy consumption and drying time of the dryer are reduced.

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  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

本申请提供了一种闭式热泵干衣机***，包括第一热泵***、第二热泵***、循环风道和干衣滚筒。本申请的闭式热泵干衣机***能够对干衣滚筒出口的湿空气依次进行梯级降温除湿、梯级加热，实现对空气温度的能量梯级利用，提高***循环的能效，降低能耗和烘干时间。

Description

闭式热泵干衣机*** 技术领域
本申请涉及热泵技术领域，特别是涉及一种闭式热泵干衣机***。
背景技术
热泵干燥***是利用热泵的除湿能力来除去湿空气中的水分，比如干衣机、除湿机、食品及工业干燥设备等。其工作原理为：湿空气先经过蒸发器被降温变成低温低湿的空气，然后经过冷凝器升温变成高温低湿的空气。
常规热泵干衣机***如图1所示，利用单级热泵处理湿空气，经除湿和升温后，将干燥的热空气送入滚筒内。现有热泵干燥***中，湿空气经过蒸发器1’时，除湿的潜热负荷一般超过总负荷的70％，为主要热负荷，空气温度一般只下降3～8℃；除湿后的空气经过冷凝器时，热负荷全部为显热负荷，空气温度可上升20～40℃。常规热泵干衣机一般采用R134a或R290作为制冷剂，制冷剂在冷凝器中冷凝放热接近定温过程，冷凝温度需高于出口空气温度，导致冷凝温度较高，压缩机7’的运行工况需要达到较大的压缩比，耗功较大，导致***能效较低。
申请内容
(一)要解决的技术问题
本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。
本申请的目的是提供一种闭式热泵干衣机***，以对湿热空气依次进行梯级降温除湿、梯级加热，实现对空气温度的能量梯级利用，提高***循环的能效，降低能耗和烘干时间。
(二)技术方案
为了解决上述技术问题，本申请实施例提供一种闭式热泵干衣机***，包括第一热泵***、第二热泵***、循环风道和干衣滚筒，所述第一热泵***包括第一制冷剂管路和依次设于所述第一制冷剂管路上的第一冷凝器、第一节流装置、第一蒸发器和第一压缩装置，所述第二热泵***包括第二制冷剂管路和依次设于所述第二制冷剂管路上的第二冷凝器、第二节流装置、第二蒸发器和第二压缩装置，所述循环风道沿风向依次与所述第一蒸发器、第二蒸发器、第二冷凝器和第一冷凝器连通，从所述第一冷凝器延伸出的所述循环风道与所述干衣滚筒的进风口连通，从所述第一蒸发器延伸出的所述循环风道与所述干衣滚筒的出风口连通，形成闭环循环风路。
本实施例中，所述第一压缩装置设有第一吸气口和第一排气口，所述第二压缩装置设有第二吸气口和第二排气口，所述第一压缩装置和第二压缩装置分别具有独立的吸排气压力。
本实施例中，所述第一压缩装置设有第一压缩腔，所述第二压缩装置设有第二压缩腔，所述第一压缩腔和第二压缩腔并列设于同一个压缩壳体中，所述第一压缩腔和第二压缩腔通过同一根轴与电机连接；所述第一压缩腔设有第一吸气口和第一排气口，所述第二压缩腔设有第二吸气口和第二排气口；所述第一吸气口与第二吸气口之间设有隔离装置，所述第一排气口与第二排气口之间设有隔离装置，保证所述第一压缩腔和第二压缩腔分别具有独立的吸排气压力。
本实施例中，所述第一排气口与所述第一冷凝器连通，所述第一吸气口与所述第一蒸发器连通；所述第二排气口与所述第二冷凝器连通，所述第二吸气口与所述第二蒸发器连通。
本实施例中，所述第一蒸发器包括第一壳体和设于所述第一壳体中的第一蒸发管，所述第一蒸发管的外表面沿其轴向排布有若干翅片。
本实施例中，所述翅片为波纹翅片，所述若干翅片均布在所述第一蒸发管的外表面，波纹翅片可以增强换热系数，同时减少冷凝水珠被风吹向第一冷凝器。
本实施例中，所述第一蒸发管内的制冷剂流向与流经所述第一壳体的风向逆流布置，采用逆流布置，以增强第一蒸发器的换热和除湿能力。
本实施例中，所述第二蒸发器包括第二壳体和设于所述第二壳体中的第二蒸发管，所述第二蒸发管内的制冷剂流向与流经所述第二壳体的风向顺流布置，从而增加第二蒸发器靠近迎风面的除湿量并减少靠近出风面的除湿量，以减少冷凝水珠被吹向第二冷凝器。
本实施例中，所述第一蒸发器中的蒸发温度比第二蒸发器中的蒸发温度高2℃以上，所述第一冷凝器中的冷凝温度比第二冷凝器中的冷凝温度高5℃以上。
本实施例中，还包括辅助冷凝器，所述辅助冷凝器设于所述第一冷凝器与所述第一节流装置之间的所述第一制冷剂管路上；所述辅助冷凝器外设有散热风机，所述散热风机从干衣机外部引入新风，用于吹向所述辅助冷凝器。
本实施例中，干衣机包括干衣机箱体和设于所述干衣机箱体内的所述干衣滚筒，所述第一热泵***、第二热泵***和循环风道均置于所述干衣机箱体内；所述干衣滚筒的进风口与所述第一冷凝器之间的所述循环风道上设有循环风机；所述干衣滚筒的出风口与所述第一蒸发器之间的所述循环风道上设有过滤网，用于收集衣物毛絮；所述干衣机箱体底部设有接水盘，用于收集蒸发冷凝下来的冷凝水。
本实施例中，所述干衣滚筒由工作电机驱动，所述工作电机为正反转电机。
(三)有益效果
与现有技术相比，本申请具有以下优点：
本申请实施例提供的一种闭式热泵干衣机***，通过第一热泵***和第二热泵***的合理连接，循环风道沿风向依次与第一蒸发器、第二蒸发器、第二冷凝器和第一冷凝器连通，从干衣滚筒排出的湿热空气依次经过第一蒸发器、第二蒸发器进行梯级降温除湿，然后经过第二冷凝器和第一冷凝器依次梯级升温，空气通过梯级降温和梯级升温，达到了除湿和加热的目的，并实现对空气温度的能量梯级利用，***功耗比单热泵***提升15％～35％；提高了热泵***循环的能效，降低了干衣机的能耗和烘干时间。
附图说明
图1为现有技术的常规热泵干衣机***的示意图；
图2为本申请一种实施例的闭式热泵干衣机***的整体连接关系示意图；
图3为本申请另一种实施例的闭式热泵干衣机***的示意图；
图4为图3中压缩装置的内部示意图；
图5为本申请第三种实施例的闭式热泵干衣机***的示意图；
图中：1’：蒸发器；3’：冷凝器；7’：压缩机；1：第一蒸发器；2：第二蒸发器；3：第一冷凝器；4：第二冷凝器；5：第一节流装置；6：第二节流装置；7：第一压缩装置；8：第二压缩装置；9：第一压缩腔；10：第二压缩腔；11：压缩壳体；12：循环风道；13：第一吸气口；14：第一排气口；15：第二吸气口；16：第二排气口；17：辅助冷凝器；18：散热风机；19：循环风机；20：干衣滚筒。
具体实施方式
下面结合附图和实施例，对本申请的具体实施方式作进一步详细描述。以下实施例用于说明本申请，但不用来限制本申请的范围。
在本申请的描述中，需要说明的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位 或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；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。对于本领域的普通技术人员而言，可以视具体情况理解上述术语在本申请中的具体含义。
此外，在本申请的描述中，除非另有说明，“多个”、“多根”、“多组”的含义是两个或两个以上。
如图2和图3所示，本申请实施例提供了一种闭式热泵干衣机***，包括第一热泵***、第二热泵***、循环风道12和干衣滚筒20，所述第一热泵***包括第一制冷剂管路和依次设于所述第一制冷剂管路上形成回路的第一冷凝器3、第一节流装置5、第一蒸发器1和第一压缩装置7，所述第二热泵***包括第二制冷剂管路和依次设于所述第二制冷剂管路上形成回路的第二冷凝器4、第二节流装置6、第二蒸发器2和第二压缩装置8，第一制冷剂管路和第二制冷剂管路中均流通有制冷剂，第一制冷剂管路和第二制冷剂管路可以采用同种制冷剂，所述循环风道12沿风向依次与所述第一蒸发器1、第二蒸发器2、第二冷凝器4和第一冷凝器3连通，也就是说，循环风道12中的空气流先经过第一蒸发器1、第二蒸发器2，再经过第二冷凝器4和第一冷凝器3，图2中循环风道12中的箭头所示为空气流向，从所述第一冷凝器3延伸出的所述循环风道12与所述干衣滚筒20的进风口连通，从所述第一蒸发器1延伸出的所述循环风道12与所述干衣滚筒20的出风口连通，形成闭环循环风路。第一蒸发器1进风为 湿热空气，其相对湿度不低于60％，进风温度范围为10～50℃，从干衣滚筒20排出的湿热空气依次经过第一蒸发器1、第二蒸发器2进行梯级降温除湿，然后经过第二冷凝器4和第一冷凝器3依次梯级升温，空气通过梯级降温和梯级升温，达到了除湿和加热的目的，并实现对空气温度的能量梯级利用，***功耗比单热泵***提升15％～35％；提高了热泵***循环的能效，降低了干衣机的能耗和烘干时间。
本实施例中，如图2所示，所述第一压缩装置7例如第一压缩机设有第一吸气口13和第一排气口14，所述第二压缩装置8例如第二压缩机设有第二吸气口15和第二排气口16，即为两个独立的压缩机，分别具有独立的吸排气压力；所述第一排气口14与所述第一冷凝器3连通，所述第一吸气口13与所述第一蒸发器1连通；所述第二排气口16与所述第二冷凝器4连通，所述第二吸气口15与所述第二蒸发器2连通，从而第一压缩机与第一冷凝器3、第一节流装置5、第一蒸发器1共同形成循环回路，第二压缩机与第二冷凝器4、第二节流装置6、第二蒸发器2共同形成另一循环回路。压缩形式可为容积式压缩机，也可为速度式压缩机。
本实施例中，可选地，如图3和图4所示，所述第一压缩装置7设有第一压缩腔9，所述第二压缩装置8设有第二压缩腔10，所述第一压缩腔9和第二压缩腔10并列设于同一个压缩壳体11中，所述第一压缩腔9和第二压缩腔10通过同一根轴与电机连接；所述第一压缩腔9设有第一吸气口13和第一排气口14，所述第二压缩腔10设有第二吸气口15和第二排气口16，即为共用电机和传动结构的两个并列压缩腔，所述第一吸气口13与第二吸气口15之间设有隔离装置，所述第一排气口14与第二排气口16之间设有隔离装置，保证所述第一压缩腔9和第二压缩腔10分别具有独立的吸排气压力；所述第一排气口14与所述第一冷凝器3连通，所述第一吸气口13与所述第一蒸发器1连通，所述第二排 气口16与所述第二冷凝器4连通，所述第二吸气口15与所述第二蒸发器2连通；从而第一压缩腔9与第一冷凝器3、第一节流装置5、第一蒸发器1共同形成循环回路，第二压缩腔10与第二冷凝器4、第二节流装置6、第二蒸发器2共同形成另一循环回路。第一节流装置5和第二节流装置6可以为节流阀或膨胀阀，也可以为其他适宜的节流机构。
本实施例中，所述第一蒸发器1包括第一壳体和设于所述第一壳体中的第一蒸发管，所述第一蒸发管的外表面沿其轴向排布有若干翅片，以增大换热面积。
本实施例中，所述翅片为波纹翅片，即翅片的表面形成波纹状，通过改变翅片的表面形状，采用波纹翅片，增大了翅片的表面积，从而进一步增大换热面积；为了优化布置，所述若干翅片均布在所述第一蒸发管的外表面，波纹翅片可以增强换热系数，同时减少冷凝水珠被风吹向冷凝器。
本实施例中，为了进一步增强换热，所述第一蒸发管内的制冷剂流向与流经所述第一壳体的空气风向逆流布置，以增强第一蒸发器的换热和除湿能力，换热能力强，主要用来除去湿空气的显热和部分潜热来除去湿空气中的部分水分。
本实施例中，所述第二蒸发器2包括第二壳体和设于所述第二壳体中的第二蒸发管，所述第二蒸发管内的制冷剂流向与流经所述第二壳体的空气风向顺流布置，从而增加第二蒸发器靠近迎风面的除湿量并减少靠近出风面的除湿量，以减少冷凝水珠被吹向冷凝器，进一步降低空气的温度并除湿，是除湿的主要部件，此种布置方式能够提高热泵的除湿效率，降低能耗。
同样地，第一冷凝器3和第二冷凝器4均包括壳体和设于壳体内的冷凝管，循环风道12具体可以为多节风管，在第一蒸发器1的第一壳体与第二蒸发器2的第二壳体之间连接一节风管，在第二壳体与第二冷凝器4的壳体之间连接一节风管，在第二冷凝器4的壳体与第一冷凝 器3的壳体之间连接一节风管，在第一冷凝器3的壳体与干衣滚筒20的外壳的进风口之间连接一节风管，在干衣滚筒20的外壳的出风口与第一蒸发器1的第一壳体之间连接一节风管，多节风管相互连通，第一壳体、第二壳体以及第一冷凝器3的壳体、第二冷凝器4的壳体均作为通风通道参与空气循环。当然，循环风道12也可以采用一根依次穿过第一壳体、第二壳体，第二冷凝器4的壳体、第一冷凝器3的壳体的一体式风管，且一体式风管的两端延伸出第一壳体和第一冷凝器3的壳体外，用于连接干衣滚筒20的外壳的出风口和进风口。
本实施例本质上具有两个独立的热泵循环，具有不同的蒸发温度和不同的冷凝温度，所述第一蒸发器1中的蒸发温度比第二蒸发器2中的蒸发温度高2℃以上，所述第一冷凝器3中的冷凝温度比第二冷凝器4中的冷凝温度高5℃以上。当然，除本实施例外，还可以采用不止两个热泵***进行合理布置。
本实施例中，如图5所示，还包括辅助冷凝器17，所述辅助冷凝器17设于所述第一冷凝器3与所述第一节流装置5之间的所述第一制冷剂管路上；所述辅助冷凝器17外设有散热风机18，所述散热风机18从干衣机外部引入新风，用于吹向所述辅助冷凝器17；通过散热风机18引入外部新风，通过散热风机18的开启来控制是否向外界散热，一方面可以避免第一冷凝器3中冷凝温度过高引起压缩装置保护，另一方面也能增加过冷度进一步提升***能效。
本实施例中，干衣机包括干衣机箱体和设于所述干衣机箱体内的所述干衣滚筒20，所述第一热泵***、第二热泵***和循环风道均置于所述干衣机箱体内，具体地，干衣机箱体底部设有底盘，第一热泵***、第二热泵***均安装在底盘上；所述干衣滚筒20的进风口与所述第一冷凝器之间的所述循环风道12上设有循环风机19；所述干衣滚筒20的出风口与所述第一蒸发器之间的所述循环风道12上设有过滤网，用于收集衣物毛絮；所述干衣机箱体底部设有接水盘，用于收集 蒸发器蒸发冷凝下来的冷凝水；干衣滚筒20的外表面均布有若干小孔，干燥热空气从干衣机箱体进入，并从干衣滚筒20的若干小孔进入干衣滚筒20内，与干衣滚筒20内的湿空气进行热交换，带走干衣滚筒20中空气中的湿气；所述干衣滚筒20的进风口与所述第一冷凝器3之间的所述循环风道12上设有循环风机19，通过开启循环风机19，可以增强空气流动速度，从而提高除湿的效率。
本实施例中，所述干衣滚筒20由工作电机驱动，所述工作电机可以为正反转电机，通过正反转电机控制干衣滚筒20进行正反转，从而防止大衣物包裹。
由以上实施例可以看出，本实施例通过梯级降温和梯级升温，达到了除湿和加热的目的，并实现对空气温度的能量梯级利用，***功耗比单热泵***提升15％～35％；提高了热泵***循环的能效，降低了干衣机的能耗和烘干时间。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (12)

  1. 一种闭式热泵干衣机***，其特征在于，包括第一热泵***、第二热泵***、循环风道和干衣滚筒，所述第一热泵***包括第一制冷剂管路和依次设于所述第一制冷剂管路上的第一冷凝器、第一节流装置、第一蒸发器和第一压缩装置，所述第二热泵***包括第二制冷剂管路和依次设于所述第二制冷剂管路上的第二冷凝器、第二节流装置、第二蒸发器和第二压缩装置，所述循环风道沿风向依次与所述第一蒸发器、第二蒸发器、第二冷凝器和第一冷凝器连通，从所述第一冷凝器延伸出的所述循环风道与所述干衣滚筒的进风口连通，从所述第一蒸发器延伸出的所述循环风道与所述干衣滚筒的出风口连通，形成闭环循环风路。
  2. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述第一压缩装置设有第一吸气口和第一排气口，所述第二压缩装置设有第二吸气口和第二排气口，所述第一压缩装置和第二压缩装置分别具有独立的吸排气压力。
  3. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述第一压缩装置设有第一压缩腔，所述第二压缩装置设有第二压缩腔，所述第一压缩腔和第二压缩腔并列设于同一个压缩壳体中，所述第一压缩腔和第二压缩腔通过同一根轴与电机连接；所述第一压缩腔设有第一吸气口和第一排气口，所述第二压缩腔设有第二吸气口和第二排气口；所述第一吸气口与第二吸气口之间设有隔离装置，所述第一排气口与第二排气口之间设有隔离装置，保证所述第一压缩腔和第二压缩腔分别具有独立的吸排气压力。
  4. 根据权利要求2或3所述的闭式热泵干衣机***，其特征在于，所述第一排气口与所述第一冷凝器连通，所述第一吸气口与所述第一蒸发器连通；所述第二排气口与所述第二冷凝器连通，所述第二吸气口与所述第二蒸发器连通。
  5. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述第一蒸发器包括第一壳体和设于所述第一壳体中的第一蒸发管，所述第一蒸发管的外表面沿其轴向排布有若干翅片。
  6. 根据权利要求5所述的闭式热泵干衣机***，其特征在于，所述翅片为波纹翅片，所述若干翅片均布在所述第一蒸发管的外表面。
  7. 根据权利要求5所述的闭式热泵干衣机***，其特征在于，所述第一蒸发管内的制冷剂流向与流经所述第一壳体的风向逆流布置。
  8. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述第二蒸发器包括第二壳体和设于所述第二壳体中的第二蒸发管，所述第二蒸发管内的制冷剂流向与流经所述第二壳体的风向顺流布置。
  9. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述第一蒸发器中的蒸发温度比第二蒸发器中的蒸发温度高2℃以上，所述第一冷凝器中的冷凝温度比第二冷凝器中的冷凝温度高5℃以上。
  10. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，还包括辅助冷凝器，所述辅助冷凝器设于所述第一冷凝器与所述第一节流装置之间的所述第一制冷剂管路上；所述辅助冷凝器外设有散热风机，所述散热风机从干衣机外部引入新风，用于吹向所述辅助冷凝器。
  11. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，干衣机包括干衣机箱体和设于所述干衣机箱体内的所述干衣滚筒，所述第一热泵***、第二热泵***和循环风道均置于所述干衣机箱体内；所述干衣滚筒的进风口与所述第一冷凝器之间的所述循环风道上设有循环风机；所述干衣滚筒的出风口与所述第一蒸发器之间的所述循环风道上设有过滤网，用于收集衣物毛絮；所述干衣机箱体底部设有接水盘，用于收集蒸发冷凝下来的冷凝水。
  12. 根据权利要求1所述的闭式热泵干衣机***，其特征在于，所述干衣滚筒由工作电机驱动，所述工作电机为正反转电机。
PCT/CN2018/115463 2018-11-14 2018-11-14 闭式热泵干衣机*** WO2020097831A1 (zh)

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CN113340084A (zh) * 2021-06-08 2021-09-03 张怀旺 一种纺织品高效烘干设备
CN113720129A (zh) * 2021-09-16 2021-11-30 江苏三尔汽车部件有限公司 一种安全的汽车减震器零部件烘干设备
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CN115540544A (zh) * 2022-08-30 2022-12-30 沙县万香食品有限责任公司 一种面条烘干用循环烘干机

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