WO2023000862A1 - 一种用于等温除湿和冷风机的制冷***切换结构 - Google Patents

一种用于等温除湿和冷风机的制冷***切换结构 Download PDF

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WO2023000862A1
WO2023000862A1 PCT/CN2022/098143 CN2022098143W WO2023000862A1 WO 2023000862 A1 WO2023000862 A1 WO 2023000862A1 CN 2022098143 W CN2022098143 W CN 2022098143W WO 2023000862 A1 WO2023000862 A1 WO 2023000862A1
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air
condenser
valve
pipe
branch pipe
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PCT/CN2022/098143
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English (en)
French (fr)
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叶海林
岑利峰
叶子豪
徐剑
夏宾
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浙江普林艾尔电器工业有限公司
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Publication of WO2023000862A1 publication Critical patent/WO2023000862A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification

Definitions

  • the utility model relates to a refrigeration system, more specifically, it relates to a refrigeration system switching structure for isothermal dehumidification and a cooling fan.
  • the fresh air dehumidifier is a dehumidification device that filters and dehumidifies the outdoor air, and sends relatively dry air that reaches the target relative humidity to the room through the fresh air duct to meet the comfort or technological indoor environmental humidity requirements.
  • Existing fresh air dehumidifiers usually only have the function of fresh air dehumidification. In some special spaces such as kitchens and bathrooms where it is inconvenient to install air conditioners, it is impossible to obtain a suitable ambient temperature.
  • the utility model provides a refrigeration system switching structure for isothermal dehumidification and cooling fan, which can realize the switching of the refrigeration system corresponding to the isothermal dehumidification working mode and the cooling fan working mode, and is convenient to realize the isothermal dehumidification working mode and cooling fan working mode.
  • a refrigeration system switching structure for isothermal dehumidification and cooling fan including the body, compressor, evaporator, first condenser, reheat condenser, air supply Fan, exhaust fan, air supply chamber and exhaust chamber are installed in the body, the air supply fan, reheat condenser, and evaporator are installed in the air supply chamber, and the first condenser and exhaust fan are installed in the exhaust chamber ;
  • the outlet of the compressor is connected to the inlet of the first condenser, the outlet of the first condenser is connected in parallel with the first branch pipe and the second branch pipe, the first solenoid valve and the second solenoid valve are respectively installed on the first branch pipe and the second branch pipe, and the first branch pipe is connected to
  • the inlet of the reheat condenser, the outlet of the reheat condenser and the inlet of the evaporator are connected in parallel with the first throttle tube and the second throttle tube, and the first throttle valve and
  • the refrigeration system When the refrigeration system is working, it can realize the isothermal dehumidification working mode and the cooling fan working mode.
  • the refrigerant In the isothermal dehumidification working mode, the refrigerant is discharged from the outlet of the compressor into the first condenser, the first solenoid valve is opened, the second solenoid valve is closed, the refrigerant enters the reheat condenser, and enters the evaporator through the one-way valve and the second throttle valve , and then return to the inlet of the compressor, so that the cycle works, and the air supply fan will discharge the air after isothermal dehumidification from the air supply chamber.
  • the refrigerant When the air cooler is in working mode, the refrigerant is discharged from the compressor outlet into the first condenser, the first solenoid valve is closed, the second solenoid valve is opened, the refrigerant enters the evaporator through the second throttle valve, and then returns to the compressor inlet, and so on. Work.
  • the refrigerant in the reheating condenser is supplemented into the evaporator through the first throttle valve until the pressure of the reheating condenser and the evaporator is balanced, and the air supply fan discharges the cold air from the air supply chamber.
  • the pipeline of the first throttle valve is longer and the pipe diameter is thinner, so the throttling effect of the first throttle valve is better.
  • the refrigerant in the reheating condenser is sent to the evaporator from the second throttle valve, instead of being sent to the evaporator from the first throttle valve.
  • the exhaust fan works to generate flowing air in the exhaust chamber to dissipate heat from the first condenser. This program focuses on the isothermal dehumidification function.
  • the refrigeration system switching structure for isothermal dehumidification and cooling fan can realize the switching of the refrigeration system corresponding to the isothermal dehumidification working mode and the cooling fan working mode, and is convenient to realize the isothermal dehumidification working mode and the cooling fan working mode.
  • a liquid storage barrel is installed between the second branch pipe and the second throttle valve on the second throttle pipe.
  • the liquid storage tank can store the refrigerant, so that the system has enough refrigerant, which is convenient for the refrigerant to be added to the main circulation pipeline, so that the system operates efficiently.
  • the liquid storage barrel is arranged in the air supply chamber.
  • the liquid storage barrel is installed in the air supply chamber, which is convenient for layout and installation.
  • Another solution is to install the second condenser on the second branch pipe, install the check valve on the second branch pipe, connect the third throttling pipe between the second branch pipe and the inlet of the evaporator, and install the third throttling pipe on the third throttling pipe.
  • flow valve, and the third throttle pipe is connected between the outlet of the second condenser and the one-way valve on the second branch pipe.
  • the refrigerant is discharged from the outlet of the compressor into the first condenser, the first solenoid valve is opened, the second solenoid valve is closed, the refrigerant enters the reheat condenser, and enters the evaporator through the one-way valve and the second throttle valve , and then return to the inlet of the compressor, so that the cycle works, and the air supply fan will discharge the air after isothermal dehumidification from the air supply chamber.
  • the refrigerant in the second condenser is replenished into the evaporator through the third throttling valve until the pressure of the second condenser and the evaporator are balanced.
  • the first solenoid valve When the air cooler is in working mode, the first solenoid valve is closed and the second solenoid valve is opened.
  • the refrigerant is discharged from the outlet of the compressor into the first condenser and then into the second condenser.
  • the flow valve enters the evaporator, and then returns to the compressor inlet, so that the cycle works.
  • the refrigerant in the reheating condenser is supplemented into the evaporator through the first throttle valve until the pressure of the reheating condenser and the evaporator is balanced, and the air supply fan discharges the cold air from the air supply chamber.
  • the pipeline of the first throttle valve and the third throttle valve is longer and the pipe diameter is thinner, the first throttle valve, the third throttle valve
  • the throttling effect of the throttle valve is good.
  • the exhaust fan works to generate flowing air in the exhaust chamber to dissipate heat from the first condenser. This program focuses on the function of the air cooler.
  • the second condenser is arranged in the exhaust chamber.
  • the second condenser is installed in the exhaust chamber to facilitate heat dissipation.
  • the compressor is installed in the exhaust chamber.
  • the compressor is installed in the exhaust chamber for heat dissipation.
  • a return air chamber and a fresh air chamber are provided in the body, and a heat exchanger is installed in the body, and two heat exchange air passages are arranged in the heat exchanger, and the front ends of the return air chamber, the fresh air chamber and the two heat exchange air passages are respectively
  • the first air valve and the second air valve are connected
  • the third air valve and the fourth air valve are respectively connected between the return air chamber, the fresh air chamber and the rear ends of the two heat exchange air ducts
  • the rear ends of the two heat exchange air ducts They are respectively connected with the air supply cavity and the exhaust cavity.
  • the working mode of the fresh air dehumidifier with pre-cooling the working mode of the internal circulation dehumidification, and the working mode of the full heat exchange fresh air machine can be realized. Versatile.
  • the beneficial effect of the utility model is that the switching structure of the refrigeration system used for isothermal dehumidification and cooling fan can realize the switching of the refrigeration system corresponding to the isothermal dehumidification working mode and the cooling fan working mode, which facilitates the realization of isothermal dehumidification work mode and the working mode of the cooling fan.
  • Fig. 1 is a structural representation of the utility model
  • Fig. 2 is the pipeline connection schematic diagram of embodiment 1 of the present utility model
  • Fig. 3 is the pipeline connection schematic diagram of embodiment 2 of the present utility model
  • Embodiment 1 A refrigeration system switching structure for isothermal dehumidification and cooling fan (see accompanying drawing 1, accompanying drawing 2), including body 1, compressor 2, evaporator 3, first condenser 4, reheating condensing Device 5, air supply fan 6, exhaust fan 7, air supply chamber 8, exhaust air chamber 9 are arranged in the body, air supply fan, reheat condenser, evaporator are installed in the air supply chamber, the first condenser, The exhaust fan is installed in the exhaust chamber; the outlet of the compressor is connected to the inlet of the first condenser, the outlet of the first condenser is connected in parallel with the first branch pipe 10 and the second branch pipe 11, and the first solenoid valve is respectively installed on the first branch pipe and the second branch pipe 12.
  • the second solenoid valve 13 the first branch pipe is connected to the inlet of the reheat condenser, the outlet of the reheat condenser and the inlet of the evaporator are connected in parallel with the first throttling pipe 14, the second throttling pipe 15, and the first throttling pipe
  • the first throttling valve 16 and the second throttling valve 17 are respectively installed on the second throttling pipe, and the check valve 18 is installed on the second throttling pipe, and the second branch pipe is connected to the check valve and the second throttling pipe.
  • the compressor is installed in the exhaust chamber.
  • the reheat condenser is placed between the evaporator and the blower fan.
  • the body is provided with a return air cavity 19 and a fresh air cavity 20, and a heat exchanger 21 is installed in the body.
  • the first air valve 22 and the second air valve 23 are connected, and the third air valve 24 and the fourth air valve 25 are respectively connected between the return air chamber, the fresh air chamber and the rear ends of the two heat exchange air passages.
  • the rear end of the channel is connected with the air supply chamber and the air exhaust chamber respectively.
  • the body is provided with a return air outlet, a fresh air outlet, an air supply outlet, and an air exhaust outlet.
  • the air return outlet and the fresh air outlet are respectively connected with the return air chamber and the fresh air chamber. connected.
  • a liquid storage barrel 26 is installed between the second branch pipe on the second throttle pipe and the second throttle valve.
  • the liquid storage barrel is arranged in the air supply cavity.
  • the refrigeration system When the refrigeration system is working, it can realize the isothermal dehumidification working mode and the cooling fan working mode.
  • the refrigerant In the isothermal dehumidification working mode, the refrigerant is discharged from the outlet of the compressor into the first condenser, the first solenoid valve is opened, the second solenoid valve is closed, the refrigerant enters the reheat condenser, and enters the evaporator through the one-way valve and the second throttle valve , and then return to the inlet of the compressor, so that the cycle works, and the air supply fan will discharge the air after isothermal dehumidification from the air supply chamber.
  • the refrigerant When the air cooler is in working mode, the refrigerant is discharged from the compressor outlet into the first condenser, the first solenoid valve is closed, the second solenoid valve is opened, the refrigerant enters the evaporator through the second throttle valve, and then returns to the compressor inlet, and so on. Work.
  • the refrigerant in the reheating condenser is supplemented into the evaporator through the first throttle valve until the pressure of the reheating condenser and the evaporator is balanced, and the air supply fan discharges the cold air from the air supply chamber.
  • the pipeline of the first throttle valve is longer and the pipe diameter is thinner, so the throttling effect of the first throttle valve is better.
  • the refrigerant in the reheating condenser is sent into the evaporator from the second throttle valve instead of being sent into the evaporator from the first throttle valve.
  • the exhaust fan works to generate flowing air in the exhaust chamber to dissipate heat from the first condenser. This program focuses on the isothermal dehumidification function.
  • Embodiment 2 A refrigeration system switching structure for isothermal dehumidification and air cooler (see accompanying drawing 3), its structure is similar to Embodiment 1, the main difference is that the second condenser is installed on the second branch pipe in this embodiment 27. Install a one-way valve on the second branch pipe, connect the third throttle pipe 28 between the second branch pipe and the inlet of the evaporator, install the third throttle valve 29 on the third throttle pipe, and connect the third throttle pipe to the Between the outlet of the second condenser and the one-way valve on the two branch pipes. The second condenser is arranged in the exhaust chamber. Other structures are the same as in Embodiment 1.
  • the refrigerant is discharged from the outlet of the compressor into the first condenser, the first solenoid valve is opened, the second solenoid valve is closed, the refrigerant enters the reheat condenser, and enters the evaporator through the one-way valve and the second throttle valve , and then return to the inlet of the compressor, so that the cycle works, and the air supply fan will discharge the air after isothermal dehumidification from the air supply chamber.
  • the refrigerant in the second condenser is replenished into the evaporator through the third throttling valve until the pressure of the second condenser and the evaporator are balanced.
  • the first solenoid valve When the air cooler is in working mode, the first solenoid valve is closed and the second solenoid valve is opened.
  • the refrigerant is discharged from the outlet of the compressor into the first condenser and then into the second condenser.
  • the flow valve enters the evaporator, and then returns to the compressor inlet, so that the cycle works.
  • the refrigerant in the reheating condenser is supplemented into the evaporator through the first throttle valve until the pressure of the reheating condenser and the evaporator is balanced, and the air supply fan discharges the cold air from the air supply chamber.
  • the pipelines of the first throttle valve and the third throttle valve are longer and the pipe diameters are thinner.
  • the throttling effect of the throttle valve is good.
  • the exhaust fan works to generate flowing air in the exhaust chamber to dissipate heat from the first condenser and the second condenser. This program focuses on the function of the air cooler.

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Abstract

一种用于等温除湿和冷风机的制冷***切换结构，旨在解决现有的新风除湿机功能单一的不足，包括机体（1），其内设有送风腔、排风腔，送风风机（6）、再热冷凝器（5）、蒸发器（3）安装在送风腔内，第一冷凝器（4）、排风风机（7）安装在排风腔内；压缩机（2）出口连接第一冷凝器（4）进口，第一冷凝器（4）出口并联第一支管（10）、第二支管（11），第一支管（10）和第二支管（11）上分别安装第一电磁阀（12）、第二电磁阀（13），第一支管（10）连接到再热冷凝器（5）进口，再热冷凝器（5）出口和蒸发器（3）进口之间并联第一节流管（14）、第二节流管（15），第一节流管（14）和第二节流管（15）上分别安装第一节流阀（16）和第二节流阀（17），第二节流管（15）上安装单向阀（18），第二支管（11）连接到第二节流管（15）上，蒸发器（3）出口连接到压缩机（2）进口。

Description

一种用于等温除湿和冷风机的制冷***切换结构 技术领域
本实用新型涉及一种制冷***，更具体地说，它涉及一种用于等温除湿和冷风机的制冷***切换结构。
背景技术
新风除湿机是将室外空气经过过滤除湿后，通过新风管道将相对干燥的、并达到目标相对湿度的空气送至室内，以达到舒适性或工艺性室内环境湿度需求的除湿设备。现有的新风除湿机，通常只有新风除湿功能，在一些特殊空间如厨房、卫生间不方便安装空调的空间，无法获得适宜的环境温度。
实用新型内容
为了克服上述不足，本实用新型提供了一种用于等温除湿和冷风机的制冷***切换结构，它能实现等温除湿工作模式和冷风机工作模式对应的制冷***的切换，便于实现等温除湿工作模式和冷风机工作模式。
为了解决上述技术问题，本实用新型采用以下技术方案：一种用于等温除湿和冷风机的制冷***切换结构，包括机体、压缩机、蒸发器、第一冷凝器、再热冷凝器、送风风机、排风风机，机体内设有送风腔、排风腔，送风风机、再热冷凝器、蒸发器安装在送风腔内，第一冷凝器、排风风机安装在排风腔内；压缩机出口连接第一冷凝器进口，第一冷凝器出口并联第一支管、第二支管，第一支管和第二支管上分别安装第一电磁阀、第二电磁阀，第一支管连接到再热冷凝器进口，再热冷凝器出口和蒸发器进口之间并联第一节流管、第二节流管，第一节流管和第二节流管上分别安装第一节流阀和第二节流阀，第二节流管上安装单向阀，第二支管连接到第二节流管上单向阀和第二节流阀之间的位置，蒸发器出口连接到压缩机进口。
制冷***工作时，能够实现等温除湿工作模式和冷风机工作模式。等温除湿工作模式下，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀开启，第二电磁阀关闭，冷媒进入再热冷凝器，经过单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作，送风风机将等温除湿后的空气从送风腔向外排出。冷风机工作模式时，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀关闭，第二电磁阀开启，冷媒经第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作。再热冷凝器中的冷媒通过第一节流阀补充到蒸发器中，直到再热冷凝器与蒸发器压力平衡，送风风机将冷风从送风腔向外排出。第一节流阀与第二节流阀比，第一节流阀的管路更长、管径更细，第一节流阀的节流效果好。因此在等温除湿工作 模式下，再热冷凝器内的冷媒从第二节流阀送入蒸发器，而不会从第一节流阀送入蒸发器。排风风机工作使排风腔内产生流动的气流，对第一冷凝器进行散热。本方案侧重等温除湿功能。
这种用于等温除湿和冷风机的制冷***切换结构能实现等温除湿工作模式和冷风机工作模式对应的制冷***的切换，便于实现等温除湿工作模式和冷风机工作模式。
作为优选，第二节流管上第二支管和第二节流阀之间安装储液桶。储液桶能够储存冷媒，使***有足够的冷媒量，便于冷媒补充到主循环的管路中，使***运行高效。
作为优选，储液桶设置在送风腔内。储液桶安装在送风腔内，布设安装方便。
另一种方案，第二支管上安装第二冷凝器，第二支管上安装单向阀，第二支管与蒸发器进口之间连接第三节流管，第三节流管上安装第三节流阀，第三节流管连接在第二支管上第二冷凝器出口和单向阀之间。
等温除湿工作模式下，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀开启，第二电磁阀关闭，冷媒进入再热冷凝器，经过单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作，送风风机将等温除湿后的空气从送风腔向外排出。第二冷凝器中的冷媒通过第三节流阀补充到蒸发器中，直到第二冷凝器与蒸发器压力平衡。
冷风机工作模式时，第一电磁阀关闭，第二电磁阀开启，冷媒从压缩机出口排出进入第一冷凝器、再进入第二冷凝器，经第二支管上的单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作。再热冷凝器中的冷媒通过第一节流阀补充到蒸发器中，直到再热冷凝器与蒸发器压力平衡，送风风机将冷风从送风腔向外排出。第一节流阀、第三节流阀与第二节流阀比，第一节流阀、第三节流阀的管路更长、管径更细，第一节流阀、第三节流阀的节流效果好。排风风机工作使排风腔内产生流动的气流，对第一冷凝器进行散热。本方案侧重冷风机功能。
作为优选，第二冷凝器设置在排风腔内。第二冷凝器安装在排风腔中便于散热。
作为优选，压缩机安装在排风腔内。压缩机安装在排风腔中便于散热。
作为优选，机体内设有回风腔、新风腔，机体内安装换热器，换热器内设有两换热风道，回风腔、新风腔与两换热风道的前端之间分别连接有第一风阀和第二风阀，回风腔、新风腔与两换热风道的后端之间分别连接有第三风阀和第四风阀，两换热风道的后端分别与送风腔、排风腔连通。
通过对第一风阀、第二风阀、第三风阀、第四风阀的控制，可实现带预冷的新风除湿机工作模式、内循环除湿工作模式、全热交换新风机工作模式，功能多样。
与现有技术相比，本实用新型的有益效果是：用于等温除湿和冷风机的制冷***切换结构能实现等温除湿工作模式和冷风机工作模式对应的制冷***的切换，便于实现等温除湿工作模式和冷风机工作模式。
附图说明
图1是本实用新型的结构示意图；
图2是本实用新型的实施例1的管路连接示意图；
图3是本实用新型的实施例2的管路连接示意图；
图中：1、机体，2、压缩机，3、蒸发器，4、第一冷凝器，5、再热冷凝器，6、送风风机，7、排风风机，8、送风腔，9、排风腔，10、第一支管，11、第二支管，12、第一电磁阀，13、第二电磁阀，14、第一节流管，15、第二节流管，16、第一节流阀，17、第二节流阀，18、单向阀，19、回风腔，20、新风腔，21、换热器，22、第一风阀，23、第二风阀，24、第三风阀，25、第四风阀，26、储液桶，27、第二冷凝器，28、第三节流管，29、第三节流阀。
具体实施方式
下面通过具体实施例，并结合附图，对本实用新型的技术方案作进一步的具体描述：
实施例1：一种用于等温除湿和冷风机的制冷***切换结构(参见附图1、附图2)，包括机体1、压缩机2、蒸发器3、第一冷凝器4、再热冷凝器5、送风风机6、排风风机7，机体内设有送风腔8、排风腔9，送风风机、再热冷凝器、蒸发器安装在送风腔内，第一冷凝器、排风风机安装在排风腔内；压缩机出口连接第一冷凝器进口，第一冷凝器出口并联第一支管10、第二支管11，第一支管和第二支管上分别安装第一电磁阀12、第二电磁阀13，第一支管连接到再热冷凝器进口，再热冷凝器出口和蒸发器进口之间并联第一节流管14、第二节流管15，第一节流管和第二节流管上分别安装第一节流阀16和第二节流阀17，第二节流管上安装单向阀18，第二支管连接到第二节流管上单向阀和第二节流阀之间的位置，蒸发器出口连接到压缩机进口。压缩机安装在排风腔内。再热冷凝器置于蒸发器和送风风机之间。
机体内设有回风腔19、新风腔20，机体内安装换热器21，换热器内设有两换热风道，回风腔、新风腔与两换热风道的前端之间分别连接有第一风阀22和第二风阀23，回风腔、新风腔与两换热风道的后端之间分别连接有第三风阀24和第四风阀25，两换热风道的后端分别与送风腔、排风腔连通。机体上设有回风口、新风口、送风口、排风口，回风口、新风口分别与回风腔、新风腔连通，送风口、排风口分别与送风风机、排风风机的出风口连通。
第二节流管上第二支管和第二节流阀之间安装储液桶26。储液桶设置在送风腔内。
制冷***工作时，能够实现等温除湿工作模式和冷风机工作模式。等温除湿工作模式 下，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀开启，第二电磁阀关闭，冷媒进入再热冷凝器，经过单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作，送风风机将等温除湿后的空气从送风腔向外排出。冷风机工作模式时，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀关闭，第二电磁阀开启，冷媒经第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作。再热冷凝器中的冷媒通过第一节流阀补充到蒸发器中，直到再热冷凝器与蒸发器压力平衡，送风风机将冷风从送风腔向外排出。第一节流阀与第二节流阀比，第一节流阀的管路更长、管径更细，第一节流阀的节流效果好。因此在等温除湿工作模式下，再热冷凝器内的冷媒从第二节流阀送入蒸发器，而不会从第一节流阀送入蒸发器。排风风机工作使排风腔内产生流动的气流，对第一冷凝器进行散热。本方案侧重等温除湿功能。
实施例2：一种用于等温除湿和冷风机的制冷***切换结构(参见附图3)，其结构与实施例1相似，主要不同点在于本实施例中第二支管上安装第二冷凝器27，第二支管上安装单向阀，第二支管与蒸发器进口之间连接第三节流管28，第三节流管上安装第三节流阀29，第三节流管连接在第二支管上第二冷凝器出口和单向阀之间。第二冷凝器设置在排风腔内。其它结构与实施例1相同。
等温除湿工作模式下，冷媒从压缩机出口排出进入第一冷凝器，第一电磁阀开启，第二电磁阀关闭，冷媒进入再热冷凝器，经过单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作，送风风机将等温除湿后的空气从送风腔向外排出。第二冷凝器中的冷媒通过第三节流阀补充到蒸发器中，直到第二冷凝器与蒸发器压力平衡。
冷风机工作模式时，第一电磁阀关闭，第二电磁阀开启，冷媒从压缩机出口排出进入第一冷凝器、再进入第二冷凝器，经第二支管上的单向阀、第二节流阀进入蒸发器，再回到压缩机进口，如此循环工作。再热冷凝器中的冷媒通过第一节流阀补充到蒸发器中，直到再热冷凝器与蒸发器压力平衡，送风风机将冷风从送风腔向外排出。第一节流阀、第三节流阀与第二节流阀比，第一节流阀、第三节流阀的管路更长、管径更细，第一节流阀、第三节流阀的节流效果好。排风风机工作使排风腔内产生流动的气流，对第一冷凝器、第二冷凝器进行散热。本方案侧重冷风机功能。
以上所述的实施例只是本实用新型较佳的方案，并非对本实用新型作任何形式上的限制，在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。

Claims (7)

  1. 一种用于等温除湿和冷风机的制冷***切换结构，其特征是，包括机体、压缩机、蒸发器、第一冷凝器、再热冷凝器、送风风机、排风风机，机体内设有送风腔、排风腔，送风风机、再热冷凝器、蒸发器安装在送风腔内，第一冷凝器、排风风机安装在排风腔内；压缩机出口连接第一冷凝器进口，第一冷凝器出口并联第一支管、第二支管，第一支管和第二支管上分别安装第一电磁阀、第二电磁阀，第一支管连接到再热冷凝器进口，再热冷凝器出口和蒸发器进口之间并联第一节流管、第二节流管，第一节流管和第二节流管上分别安装第一节流阀和第二节流阀，第二节流管上安装单向阀，第二支管连接到第二节流管上单向阀和第二节流阀之间的位置，蒸发器出口连接到压缩机进口。
  2. 根据权利要求1所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，第二节流管上第二支管和第二节流阀之间安装储液桶。
  3. 根据权利要求2所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，储液桶设置在送风腔内。
  4. 根据权利要求1所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，第二支管上安装第二冷凝器，第二支管上安装单向阀，第二支管与蒸发器进口之间连接第三节流管，第三节流管上安装第三节流阀，第三节流管连接在第二支管上第二冷凝器出口和单向阀之间。
  5. 根据权利要求4所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，第二冷凝器设置在排风腔内。
  6. 根据权利要求1至5任意一项所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，压缩机安装在排风腔内。
  7. 根据权利要求1至5任意一项所述的一种用于等温除湿和冷风机的制冷***切换结构，其特征是，机体内设有回风腔、新风腔，机体内安装换热器，换热器内设有两换热风道，回风腔、新风腔与两换热风道的前端之间分别连接有第一风阀和第二风阀，回风腔、新风腔与两换热风道的后端之间分别连接有第三风阀和第四风阀，两换热风道的后端分别与送风腔、排风腔连通。
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