WO2019144664A1 - 风冷冰箱及其化霜控制方法 - Google Patents

风冷冰箱及其化霜控制方法 Download PDF

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Publication number
WO2019144664A1
WO2019144664A1 PCT/CN2018/112299 CN2018112299W WO2019144664A1 WO 2019144664 A1 WO2019144664 A1 WO 2019144664A1 CN 2018112299 W CN2018112299 W CN 2018112299W WO 2019144664 A1 WO2019144664 A1 WO 2019144664A1
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Prior art keywords
air
chamber
refrigerating
evaporator
temperature
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PCT/CN2018/112299
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English (en)
French (fr)
Inventor
赵国良
赵全文
付东晓
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青岛海尔股份有限公司
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Publication of WO2019144664A1 publication Critical patent/WO2019144664A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the invention belongs to the field of household appliances, and in particular relates to an air-cooled refrigerator and a defrosting control method thereof.
  • the defrosting treatment of the evaporator is usually performed by heating with a defrosting heating wire on the evaporator to perform defrosting.
  • heat is generated by the defrosting heating wire to increase the temperature of the evaporator, and then the condensed frost on the evaporator is turned into water, and then discharged through the drain pipe to achieve the effect of defrosting;
  • the disadvantages of the method are also obvious: in the process of the defrosting temperature from low to high, all the energy consumption is the heat generated by the heating tube, and the power generated by heating the heating tube to the target temperature in a low temperature environment is high. As a result, a large amount of energy is consumed, which is not conducive to the concept of environmental protection and energy saving.
  • the present application proposes a refrigerator.
  • the present invention provides an air-cooled refrigerator including a refrigerating chamber, a freezing chamber, and an evaporator chamber, wherein the evaporator chamber is provided with an evaporator and a heating tube, the freezing chamber and the evaporator chamber Connected by a freezing air duct, the first air inlet opening and closing is provided in the freezing air duct, the cold air chamber includes a first air inlet and a first air outlet, and the evaporator chamber includes a second air inlet, a second air outlet and a fan disposed adjacent to the second air outlet; the air-cooled refrigerator further includes a refrigerating air passage connecting the first air inlet and the second air outlet, and communicating the first air outlet and the second a return air duct of the air inlet, wherein the refrigerating air duct is provided with a second damper.
  • the set height of the first air outlet is higher than the set height of the first air inlet
  • the height of the second air outlet is higher than the height of the second air inlet
  • the evaporator is disposed adjacent to the second air outlet, and the heating tube is disposed adjacent to the second air inlet.
  • one end of the freezing duct connected to the evaporator chamber forms a third air outlet adjacent to the fan, and the position height of the third air outlet corresponds to the position height of the fan.
  • the present invention also provides a defrosting control method for an air-cooled refrigerator according to any of the above, the method comprising the steps of:
  • the step of "detecting the temperature of the freezing compartment and the refrigerating compartment" specifically includes:
  • the first damper opening the first damper to cool the freezing compartment, and detecting whether the temperature of the refrigerating compartment is greater than a third threshold temperature, and if so, opening the second The damper cools the refrigerating chamber, and closes the second damper when the temperature of the refrigerating chamber is less than or equal to a third threshold temperature and greater than or equal to a fourth threshold temperature; wherein the third threshold temperature is less than the second Threshold temperature.
  • the invention has the beneficial effects that the heating tube can be preheated by returning the high temperature return air in the refrigerating chamber through the return air duct to the evaporator chamber, so that the heating tube can be heated to the defrosting temperature in a shorter time, thereby saving
  • the energy consumption of the heating tube during heating is more energy-saving and environmentally friendly.
  • FIG. 1 is a schematic structural view of an air-cooled refrigerator of the present invention
  • FIG. 2 is a flow chart of the defrosting control method of the present invention.
  • the present invention provides an air-cooled refrigerator 10 including a refrigerating compartment 100, a freezing compartment 200, and an evaporator chamber 300, wherein an evaporator 340 and heating for defrosting the evaporator 340 are disposed in the evaporator chamber 300. Tube 350.
  • the freezing chamber 200 and the evaporator chamber 300 are connected by a freezing duct 600, and the freezing duct 600 is provided with an openable and closable first damper 610.
  • the first in this embodiment The damper 610 is provided as an electronic damper.
  • the refrigerating compartment 100 includes a first air inlet 110 and a first air outlet 120.
  • the evaporator chamber 300 includes a second air inlet 310, a second air outlet 320, and a fan 330 disposed adjacent to the second air outlet 320.
  • the air-cooled refrigerator 10 further includes a refrigerating air duct 400 that connects the first air inlet 110 and the second air outlet 320, and a return air duct 500 that connects the first air outlet 120 and the second air inlet 310, wherein the refrigerating air
  • a second damper 410 is also disposed in the tunnel 400.
  • the second damper 410 in this embodiment is also disposed as an electronic damper.
  • the second damper 410 is opened, and the cold air generated by the evaporator 340 in the evaporator chamber 300 is blown into the refrigerating chamber 100 by the fan 330 through the refrigerating duct 400.
  • the first damper 610 is opened, and the cold air generated by the evaporator 340 in the evaporator chamber 300 is cooled by the fan 330 through the freezing duct 600. The air is blown into the freezing compartment 200 to control the temperature inside the freezing compartment 200.
  • the height of the first air outlet 120 is higher than the height of the first air inlet 110, and the height of the second air outlet 320 is higher than the height of the second air inlet 310.
  • the first air inlet 110 and the first air outlet 120 are respectively opened on different walls of the refrigerating chamber 100.
  • the first air inlet 110 is opened in the bottom wall of the refrigerating chamber 100, and the first air outlet 120 is opened behind the refrigerating chamber 100.
  • the second air inlet 310 and the second air outlet 320 are respectively opened on different walls of the evaporator chamber 300, and the second air inlet 310 is opened at the bottom end of the rear wall of the evaporator chamber 300, second The air outlet 320 is opened in the top wall of the evaporator chamber 300.
  • the wind in the evaporator chamber 300 can be formed from the second air outlet 320 - the refrigerating air duct 400 - the first air inlet 110 - the first air outlet 120 - the return air duct 500 - the second
  • the tuyere 310 - the closed loop of the evaporator chamber 300 provides an optimal path for air circulation between the evaporator chamber 300 and the refrigerating chamber 100.
  • the evaporator 340 in this embodiment is disposed adjacent to the second air outlet 320 to improve the efficiency of the cold air being sent into the refrigerating chamber 100 and/or the freezing chamber 200
  • the heating tube 350 is disposed adjacent to the second air inlet 310 so that The high temperature return air recirculated by the refrigerating compartment 100 through the return air duct 500 maintains the temperature of the heating pipe 350, thereby preventing the heating pipe 350 from being too low in temperature when heating is required, thereby generating a large amount of energy loss.
  • a partition 220 is disposed between the evaporator chamber 300 and the freezing chamber 200, which increases the stability and also reduces the loss of the cooling capacity in the freezing chamber 200, thereby improving energy saving efficiency.
  • the third air outlet 210 is disposed adjacent to the fan chamber 300.
  • the height of the third air outlet 210 corresponds to the height of the fan 330.
  • this embodiment The third air outlet 210 is disposed in the front wall of the evaporator chamber 300 to enable the fan 330 to simultaneously supply air into the refrigerating chamber 100 and the freezing chamber 200, thereby saving production costs.
  • the present invention also provides a defrosting control method for the air-cooled refrigerator 10.
  • the specific control method includes the following steps:
  • Determining whether the evaporator 340 needs defrosting includes automatic selection and manual selection by the user, wherein the automatic selection is based on the accumulated working time of the air-cooled refrigerator 10 and the evaporator
  • the cumulative working time of 340 is used for determination, and the manual selection can control the air-cooling refrigerator 10 to enter the defrost mode at any time according to the user's own needs;
  • the first damper 610 is turned on to cool the freezing compartment 200, and the temperature of the refrigerating compartment 100 is detected to be greater than a third threshold temperature. If so, the second damper 410 is opened.
  • the refrigerating compartment 100 performs cooling to close the second damper 410 when the temperature of the refrigerating compartment 100 is less than or equal to a third threshold temperature and greater than or equal to a fourth threshold temperature to ensure that the storage in the refrigerating compartment 100 can be in an effective refrigerating temperature range. Refrigerate inside.
  • the first damper 610 is closed, the second damper 410 is opened, and the fan 330 is controlled to operate to blow the air in the evaporator chamber 300 through the refrigerating air duct 400 into the refrigerating chamber 100, thereby causing the return air generated in the refrigerating chamber 100 to return.
  • the wind tunnel 500 enters the evaporator chamber 300; since the evaporator 340 stops the cooling operation, the return air temperature generated in the refrigerating chamber 100 rises again, and since the heating tube 350 is disposed close to the second air inlet 310, the second inlet is The high temperature return air entering the evaporator chamber 300 of the tuyere 310 continues to preheat the heating tube 350;
  • the second threshold temperature is greater than the third threshold temperature to reserve a proper space for the temperature of the refrigerating chamber 100 to ensure high temperature
  • the preheating of the heating pipe 350 by the return air is sufficient, and the second threshold temperature is the highest refrigerating temperature of the refrigerating compartment 100. If the temperature in the refrigerating compartment 100 is higher than the second threshold temperature, the second damper 410 is kept open, which may result in the refrigerating compartment. The temperature in 100 continues to rise and thus affects the effective refrigeration of the storage in the refrigerating compartment 100;
  • Control heating tube 350 begins to operate until defrosting of evaporator 340 is complete. Since the heating pipe 350 is continuously subjected to the preheating of the high temperature return air, the heating pipe 350 can be heated to the temperature required for the defrosting in a shorter time, thereby saving the energy consumption of the heating pipe 350 during heating, and is more energy-saving and environmentally friendly.
  • the defrosting method proposed by the present invention preheats the heating tube 350 by returning the high temperature return air in the refrigerating chamber 100 through the return air duct 500 to the evaporator chamber 300, so that the heating tube 350 can be in a shorter time.
  • the internal heating to the defrosting temperature saves the energy consumption of the heating tube 350 during heating, and is more energy-saving and environmentally friendly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

一种风冷冰箱（10），包括冷藏室（100）、冷冻室（200）和蒸发器腔室（300），蒸发器腔室（300）内设置有蒸发器（340）和加热管（350），冷冻室（200）和蒸发器腔室（300）之间通过冷冻风道（600）连接，冷冻风道内设有可开闭的第一风门（610）。冷藏室（100）包括第一进风口（110）和第一出风口（120），蒸发器腔室（300）包括第二进风口（310）、第二出风口（320）以及靠近第二出风口（320）设置的风机（330）。风冷冰箱（10）还包括连通第一进风口（110）与第二出风口（320）的冷藏风道（400）以及连通第一出风口（120）和第二进风口（310）的回风风道（500），冷藏风道（400）内设置有第二风门（410）。通过将冷藏室（100）的高温回风经回风风道（500）回流至蒸发器腔室（300）内对加热管（350）进行预热，使加热管（350）能在更短时间内加热到化霜温度。

Description

风冷冰箱及其化霜控制方法
本申请要求了申请日为2018年01月24日，申请号为201810067621.X，发明名称为“风冷冰箱及其化霜控制方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于家用电器领域，尤其是涉及一种风冷冰箱及其化霜控制方法。
背景技术
现有的风冷冰箱，在蒸发器的化霜的处理上通常使用蒸发器上的化霜加热丝加热来进行化霜。在现有的化霜控制方式中，通过化霜加热丝工作产生热量，提高蒸发器的温度，进而将蒸发器上凝结的霜化成水，再经排水管排出，起到除霜的效果；此方法的缺点也比较明显：在除霜温度由低变高的过程中，所有的能量消耗都是由加热管产生的热量，又因为加热管在低温环境中加热到标的温度产生的功率很高，从而导致消耗大量的能源，不利于环保节能的产品理念。
发明内容
为了解决上述问题之一，本申请提出了一种冰箱。
为了解决上述问题，本发明提出了一种风冷冰箱，包括冷藏室、冷冻室和蒸发器腔室，所述蒸发器腔室内设置有蒸发器和加热管，所述冷冻室和蒸发器腔室之间通过冷冻风道连接，所述冷冻风道内设置有可开闭的第一风门，所述冷藏室包括第一进风口和第一出风口，所述蒸发器腔室包括第二进风口、第二出风口以及靠近所述第二出风口设置的风机；所述风冷冰箱还包括连通所述第一进风口与第二出风口的冷藏风道以及连通所述第一出风口和第二进风口的回风风道，其中所述冷藏风道内设置有第二风门。
作为本发明的进一步改进，所述第一出风口的设置高度高于所述第一进风口的设置高度，所述第二出风口的设置高度高于所述第二进风口的设置高度。
作为本发明的进一步改进，所述蒸发器靠近所述第二出风口设置，所述加热管靠近所述第二进风口设置。
作为本发明的进一步改进，所述冷冻风道连接蒸发器腔室的一端形成邻近所述风机的第三出风口，所述第三出风口的位置高度与所述风机的位置高度相对应。
本发明还提出了一种如上中任一所述的风冷冰箱的化霜控制方法，所述方法包括步骤：
判断蒸发器是否需要化霜；
若是，关闭所述第二风门；
检测所述冷冻室及冷藏室的温度，并于所述冷冻室的温度低于第一阈值温度时，控制所述蒸发器停止制冷；
关闭所述第一风门，打开第二风门，控制所述风机工作以将所述蒸发器腔室内的空气经所述冷藏风道吹送至冷藏室内，进而使所述冷藏室内产生的回风自所述回风风道进入蒸发器腔室；检测所述冷藏室的温度，当所述冷藏室的温度达到第二阈值温度时，关闭所述第二风门；
控制加热管开启工作，直至化霜完成。
作为本发明的进一步改进，所述步骤“检测所述冷冻室及冷藏室的温度”具体包括：
若所述冷冻室的温度高于所述第一阈值温度，开启所述第一风门对冷冻室进行制冷，同时检测所述冷藏室的温度是否大于第三阈值温度，若是，打开所述第二风门对所述冷藏室进行制冷，于所述冷藏室的温度小于或等于第三阈值温度且大于或等于第四阈值温度时关闭所述第二风门；其中，所述第三阈值温度小于第二阈值温度。
本发明的有益效果：通过将冷藏室内的高温回风经回风风道回流至蒸发器腔室内对加热管进行预热，使加热管能在更短的时间内加热到化霜温度，节省了加热管在加热时的能量消耗，更加节能环保。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是本发明风冷冰箱的结构示意图；
图2是本发明化霜控制方法的流程图。
具体实施方式
正文：为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
此外，在不同的实施例中可能使用重复的标号或标示。这些重复仅为了简单清楚地叙述本发明，不代表所讨论的不同实施方式或结构之间具有任何关联性。
下面参照附图详细描述本发明一实施例中的具体实施方式。
本发明提出了一种风冷冰箱10，包括冷藏室100、冷冻室200和蒸发器腔室300，其中，蒸发器腔室300内设置有蒸发器340和用于为蒸发器340化霜的加热管350。
参图1所示，冷冻室200和蒸发器腔室300之间通过冷冻风道600连接并且冷冻风道600内设置有可开闭的第一风门610，具体的，本实施例中的第一风门610设置为电子风门。
进一步的，冷藏室100包括有第一进风口110和第一出风口120，蒸发器腔室300包括第二进风口310、第二出风口320以及靠近第二出风口320处设置的风机330，同时，风冷冰箱10还包括连通第一进风口110和第二出风口320的冷藏风道400，以及连通第一出风 口120和第二进风口310的回风风道500，其中，冷藏风道400内还设置有第二风门410，具体的，本实施例中的第二风门410也设置为电子风门。
具体的，当冷藏室100内需要补充冷量时，将第二风门410打开，蒸发器腔室300内的由蒸发器340制冷产生的冷风被风机330经过冷藏风道400吹送至冷藏室100内以控制冷藏室100内的温度；当冷冻室200内需要补充冷量时，将第一风门610打开，蒸发器腔室300内的由蒸发器340制冷产生的冷风被风机330经过冷冻风道600吹送至冷冻室200内以控制冷冻室200内的温度。
进一步的，本实施例中第一出风口120的设置高度高于第一进风口110的设置高度，第二出风口320的设置高度高于第二进风口310的设置高度，同时，本实施例中的第一进风口110和第一出风口120分别开设于冷藏室100的不同壁上，第一进风口110开设于冷藏室100的底壁，第一出风口120开设于冷藏室100的后壁；同时，第二进风口310和第二出风口320也分别开设于蒸发器腔室300的不同壁上，第二进风口310开设于蒸发器腔室300后壁的最底端，第二出风口320开设于蒸发器腔室300的顶壁。
本发明通过上述设计，可使蒸发器腔室300内的风形成自第二出风口320—冷藏风道400—第一进风口110—第一出风口120—回风风道500—第二进风口310—蒸发器腔室300的闭环循环，使得蒸发器腔室300和冷藏室100之间的空气循环有最优的路径。
进一步的，本实施例中的蒸发器340靠近第二出风口320设置，以提高冷风送至冷藏室100和/或冷冻室200内的效率，加热管350靠近第二进风口310设置，以使冷藏室100经回风风道500回流的高温回风保持加热管350的温度，避免了加热管350在需要加热时温度过低进而产生大量的能量损耗。
进一步的，蒸发器腔室300与冷冻室200之间设置有隔板220，增加了稳固性的同时也减弱了冷冻室200内冷量的流失，提升了节能效率。
同时，冷冻风道600连接蒸发器腔室300的一端形成有临近风机330设置的第三出风口210，第三出风口210的位置高度与风机330的位置高度相对应，具体的，本实施例中的第三出风口210设置于蒸发器腔室300的前壁，以实现风机330能同时向冷藏室100和冷冻室200内送风，节约了生产成本。
进一步的，结合图2所示，本发明还提出了一种风冷冰箱10的化霜控制方法，具体的控制方法包括以下步骤：
判断蒸发器340是否需要化霜；具体的，本实施例中的风冷冰箱10进入化霜模式包括自动选择和用户手动选择，其中自动选择是可根据风冷冰箱10的累计工作时间以及蒸发器340的累计工作时间来进行判定，而手动选择可以根据用户自身需求，随时控制风冷冰箱10进入化霜模式；
若是，关闭第二风门410；
检测冷冻室200及冷藏室100的温度，并于冷冻室200的温度低于第一阈值温度时，控 制蒸发器340停止制冷；
具体的，若冷冻室200的温度高于第一阈值温度，开启第一风门610对冷冻室200进行制冷，同时检测冷藏室100的温度是否大于第三阈值温度，若是，打开第二风门410对冷藏室100进行制冷，于冷藏室100的温度小于或等于第三阈值温度且大于或等于第四阈值温度时关闭第二风门410，以保证冷藏室100内的储物能在有效的冷藏温度范围内进行冷藏。
关闭第一风门610，打开第二风门410，控制风机330工作以将蒸发器腔室300内的空气经冷藏风道400吹送至冷藏室100内，进而使冷藏室100内产生的回风自回风风道500进入蒸发器腔室300内；由于蒸发器340停止了制冷工作，冷藏室100内产生的回风温度回升，又由于加热管350靠近第二进风口310设置，所以由第二进风口310进入蒸发器腔室300内的高温回风持续给加热管350进行预热；
检测冷藏室100的温度，当冷藏室100的温度达到第二阈值温度时，关闭第二风门410，其中，第二阈值温度大于第三阈值温度，以为冷藏室100升温保留适当空间，从而保证高温回风对加热管350的预热充足，同时第二阈值温度为冷藏室100的最高冷藏温度，若冷藏室100内温度高于第二阈值温度时仍然保持第二风门410开启，会导致冷藏室100内温度持续升高进而影响冷藏室100内储物的有效冷藏；
控制加热管350开始工作，直至蒸发器340化霜完成。由于加热管350持续受到高温回风的预热，使加热管350能在更短的时间内加热到化霜所需要的温度，节省了加热管350在加热时的能量消耗，更加节能环保。
本发明提出的化霜方法，通过将冷藏室100内的高温回风经回风风道500回流至蒸发器腔室300内对加热管350进行预热，使加热管350能在更短的时间内加热到化霜温度，节省了加热管350在加热时的能量消耗，更加节能环保。
应当理解，虽然本说明书按照实施例加以描述，但并非每个实施例仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施例。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施例的具体说明，并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施例或变更均应包含在本发明的保护范围之内。

Claims (6)

  1. 一种风冷冰箱，包括冷藏室、冷冻室和蒸发器腔室，所述蒸发器腔室内设置有蒸发器和加热管，所述冷冻室和蒸发器腔室之间通过冷冻风道连接，所述冷冻风道内设置有可开闭的第一风门，其特征在于，所述冷藏室包括第一进风口和第一出风口，所述蒸发器腔室包括第二进风口、第二出风口以及靠近所述第二出风口设置的风机；所述风冷冰箱还包括连通所述第一进风口与第二出风口的冷藏风道以及连通所述第一出风口和第二进风口的回风风道，其中所述冷藏风道内设置有第二风门。
  2. 根据权利要求1所述的风冷冰箱，其特征在于，所述第一出风口的设置高度高于所述第一进风口的设置高度，所述第二出风口的设置高度高于所述第二进风口的设置高度。
  3. 根据权利要求1所述的风冷冰箱，其特征在于，所述蒸发器靠近所述第二出风口设置，所述加热管靠近所述第二进风口设置。
  4. 根据权利要求1所述的风冷冰箱，其特征在于，所述冷冻风道连接蒸发器腔室的一端形成邻近所述风机的第三出风口，所述第三出风口的位置高度与所述风机的位置高度相对应。
  5. 一种根据权利要求1至4中任一所述的风冷冰箱的化霜控制方法，其特征在于，所述方法包括步骤：
    判断蒸发器是否需要化霜；
    若是，关闭所述第二风门；
    检测所述冷冻室及冷藏室的温度，并于所述冷冻室的温度低于第一阈值温度时，控制所述蒸发器停止制冷；
    关闭所述第一风门，打开第二风门，控制所述风机工作以将所述蒸发器腔室内的空气经所述冷藏风道吹送至冷藏室内，进而使所述冷藏室内产生的回风自所述回风风道进入蒸发器腔室；
    检测所述冷藏室的温度，当所述冷藏室的温度达到第二阈值温度时，关闭所述第二风门；
    控制加热管开启工作，直至化霜完成。
  6. 根据权利要求5所述的化霜控制方法，其特征在于，所述步骤“检测所述冷冻室及冷藏室的温度”具体包括：
    若所述冷冻室的温度高于所述第一阈值温度，开启所述第一风门对冷冻室进行制冷，同时检测所述冷藏室的温度是否大于第三阈值温度，若是，打开所述第二风门对所述冷藏室进行制冷，于所述冷藏室的温度小于或等于第三阈值温度且大于或等于第四阈值温度时关闭所述第二风门；其中，所述第三阈值温度小于第二阈值温度。
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