CN106766579B - Evaporator for refrigerator impregnates de-icing method - Google Patents
Evaporator for refrigerator impregnates de-icing method Download PDFInfo
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- CN106766579B CN106766579B CN201611045902.2A CN201611045902A CN106766579B CN 106766579 B CN106766579 B CN 106766579B CN 201611045902 A CN201611045902 A CN 201611045902A CN 106766579 B CN106766579 B CN 106766579B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010257 thawing Methods 0.000 claims abstract description 178
- 239000007788 liquid Substances 0.000 claims abstract description 142
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000007654 immersion Methods 0.000 claims description 16
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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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)
Abstract
本发明提供了一种用于冰箱的蒸发器浸泡除冰方法。包括：若需要对蒸发器进行除霜，将除霜液体导入除霜箱；第一预设时长后，检测除霜箱中下部和上部除霜液体的温度；判断执行步骤：若除霜箱中上部除霜液体的温度大于或等于下部除霜液体的温度，且除霜箱中下部除霜液体的温度大于或等于第一预设值时，将除霜箱内的除霜液体导入储液装置；否则，开启加热装置，且在除霜箱中下部除霜液体的温度大于第二预设值后关闭加热装置，并进入第二液体静止检测步骤；第二液体静止检测步骤：第二预设时长后，检测除霜箱中下部除霜液体的温度和上部除霜液体的温度，并返回判断执行步骤。该方法既能够快速化霜，又能节约能量，使化霜速度与能耗达到最佳配合。
The invention provides an evaporator soaking deicing method for a refrigerator. Including: if the evaporator needs to be defrosted, the defrosting liquid is introduced into the defrosting box; after the first preset time, the temperature of the defrosting liquid in the lower and upper parts of the defrosting box is detected; the judgment execution step: if the defrosting box is in the defrosting box When the temperature of the upper defrosting liquid is greater than or equal to the temperature of the lower defrosting liquid, and the temperature of the lower defrosting liquid in the defrosting box is greater than or equal to the first preset value, the defrosting liquid in the defrosting box is introduced into the liquid storage device ; Otherwise, turn on the heating device, and turn off the heating device after the temperature of the defrosting liquid in the lower part of the defrosting box is greater than the second preset value, and enter the second liquid static detection step; the second liquid static detection step: the second preset After a period of time, detect the temperature of the lower defrosting liquid and the temperature of the upper defrosting liquid in the defrosting box, and return to the judgment execution step. This method can not only quickly defrost, but also save energy, so that the speed of defrosting and energy consumption can be optimally matched.
Description
技术领域technical field
本发明涉及冷藏冷冻储物领域，特别是涉及一种用于冰箱的蒸发器浸泡除冰方法。The invention relates to the field of refrigerated and frozen storage, in particular to an evaporator soaking and deicing method for a refrigerator.
背景技术Background technique
现有直冷冰箱在使用一段时间后会出现箱内间室结霜现象。间冷冰箱很好地解决了冰箱结霜的问题，但是间冷冰箱(即风冷冰箱)使用一段时间后蒸发器表面会结霜。随着蒸发器上结霜量的增多，会导致冰箱制冷效率下降，影响冰箱间室温度的稳定性，需要定期将压缩机停机以对蒸发器进行化霜。目前冰箱通常采用除霜加热器以电加热的方式定期融化蒸发器上的结霜。这种除霜方式的主要缺点在于，在运行除霜过程时，除霜加热器产生的热量会使冷冻间室内部温度上升；当蒸发器化霜完成后，压缩机再次工作对冷冻室进行降温时，其工作负荷变大。并且由于除霜加热器加热产生的热量没有被高效利用，导致除霜的耗电量大、加热化霜效率较低、化霜时间较长、容易引发火灾等问题。为了解决上述问题，一些风冷冰箱采用液体对蒸发器进行除霜除冰，基本上都是直接提供加热后的液体对蒸发器进行浸泡预设时长，然后排出蒸发器室内的液体完成除霜，然而，这种除霜方法不够节能且除霜除冰时间长，浪费资源且会降低冰箱能效。The existing direct-cooling refrigerator will have the phenomenon of frosting in the compartment after being used for a period of time. The intercooling refrigerator solves the problem of frosting in the refrigerator very well, but the surface of the evaporator will frost after the intercooling refrigerator (that is, the air-cooled refrigerator) is used for a period of time. As the amount of frost on the evaporator increases, the refrigeration efficiency of the refrigerator will decrease, which will affect the stability of the temperature in the refrigerator compartment. It is necessary to stop the compressor regularly to defrost the evaporator. At present, the refrigerator usually adopts a defrosting heater to periodically melt the frost on the evaporator by means of electric heating. The main disadvantage of this defrosting method is that when the defrosting process is running, the heat generated by the defrosting heater will increase the temperature inside the freezer compartment; when the evaporator is defrosted, the compressor will work again to cool down the freezer compartment , its workload becomes larger. In addition, because the heat generated by the defrosting heater is not efficiently utilized, the power consumption of defrosting is large, the heating and defrosting efficiency is low, the defrosting time is long, and it is easy to cause fires and other problems. In order to solve the above problems, some air-cooled refrigerators use liquid to defrost and deice the evaporator. Basically, the heated liquid is directly provided to soak the evaporator for a preset time, and then the liquid in the evaporator chamber is discharged to complete the defrosting. However, this defrosting method is not energy-saving enough and takes a long time for defrosting and deicing, which wastes resources and reduces the energy efficiency of the refrigerator.
发明内容SUMMARY OF THE INVENTION
本发明旨在克服现有的冰箱中蒸发器除霜的至少一个缺陷，提供一种用于冰箱的蒸发器浸泡除冰方法，其不仅节能，且能够实现快速化霜与节约能耗的较佳平衡，显著提高了冰箱的能效。The present invention aims to overcome at least one defect of evaporator defrosting in existing refrigerators, and provides a method for immersing and deicing evaporators in refrigerators, which not only saves energy, but also achieves fast defrosting and energy saving. Balanced, significantly improving the energy efficiency of the refrigerator.
特别地，本发明提供了一种用于冰箱的蒸发器浸泡除冰方法，所述冰箱包括蒸发器、用于容纳所述蒸发器的除霜箱、用于容纳除霜液体的储液装置，以及用于加热所述除霜箱内除霜液体的加热装置；其中，所述蒸发器浸泡除冰方法包括：In particular, the present invention provides an evaporator immersion deicing method for a refrigerator, the refrigerator comprising an evaporator, a defrosting box for accommodating the evaporator, a liquid storage device for accommodating a defrosting liquid, And a heating device for heating the defrosting liquid in the defrosting box; wherein, the evaporator soaking deicing method includes:
除霜液体添加步骤：若需要对所述蒸发器进行除霜，将所述储液装置内的所述除霜液体导入所述除霜箱中至一预设水位处，以使所述蒸发器的至少部分浸没在所述除霜箱中的除霜液体中；Defrost liquid adding step: if the evaporator needs to be defrosted, the defrost liquid in the liquid storage device is introduced into the defrost box to a preset water level, so that the evaporator is at least partially submerged in the defrosting liquid in the defrosting tank;
第一液体静止检测步骤：第一预设时长后，检测所述除霜箱中下部除霜液体的温度和上部除霜液体的温度；The first liquid static detection step: after a first preset time period, detect the temperature of the lower defrosting liquid and the temperature of the upper defrosting liquid in the defrosting box;
判断执行步骤：若所述除霜箱中上部除霜液体的温度大于或等于下部除霜液体的温度，且所述除霜箱中下部除霜液体的温度大于或等于第一预设值时，将所述除霜箱内的所述除霜液体导入所述储液装置；否则，开启所述加热装置，且在所述除霜箱中下部除霜液体的温度大于第二预设值后关闭所述加热装置，并进入第二液体静止检测步骤；Judgment execution step: if the temperature of the upper defrosting liquid in the defrosting box is greater than or equal to the temperature of the lower defrosting liquid, and the temperature of the lower defrosting liquid in the defrosting box is greater than or equal to the first preset value, Leading the defrosting liquid in the defrosting box into the liquid storage device; otherwise, turning on the heating device, and turning off the heating device when the temperature of the defrosting liquid in the lower part of the defrosting box is greater than a second preset value The heating device, and enter the second liquid static detection step;
所述第二液体静止检测步骤：第二预设时长后，检测所述除霜箱中下部除霜液体的温度和上部除霜液体的温度，并返回所述判断执行步骤。The second liquid static detection step: after a second preset time period, detect the temperature of the lower defrosting liquid and the temperature of the upper defrosting liquid in the defrosting box, and return to the judgment execution step.
可选地，所述除霜液体为水。Optionally, the defrosting liquid is water.
可选地，所述第一预设值等于所述第二预设值。Optionally, the first preset value is equal to the second preset value.
可选地，所述第一预设值的取值范围为3.5℃至4.5℃。Optionally, the value range of the first preset value is 3.5°C to 4.5°C.
可选地，所述第一预设时长的取值范围为4min至6min。Optionally, the value range of the first preset duration is 4 minutes to 6 minutes.
可选地，所述第二预设时长的取值范围为40s至100s。Optionally, the value range of the second preset duration is 40s to 100s.
可选地，所述加热装置配置成加热所述除霜箱下部的除霜液体。Optionally, the heating device is configured to heat the defrosting liquid in the lower part of the defrosting box.
可选地，所述加热装置设置于所述除霜箱的内部腔室的底部。Optionally, the heating device is arranged at the bottom of the inner chamber of the defrosting box.
可选地，所述蒸发器的全部浸没在所述除霜箱中的除霜液体中；Optionally, all of the evaporator is submerged in the defrosting liquid in the defrosting box;
利用第一温度检测装置和第二温度检测装置分别检测所述除霜箱中上部除霜液体的温度和下部除霜液体的温度；且using the first temperature detection device and the second temperature detection device to respectively detect the temperature of the upper defrosting liquid and the temperature of the lower defrosting liquid in the defrosting box; and
所述第一温度检测装置设置于所述蒸发器的高度的2/3处与所述蒸发器的顶部之间的任一位置处；The first temperature detection device is arranged at any position between 2/3 of the height of the evaporator and the top of the evaporator;
所述第二温度检测装置设置于所述蒸发器的底部与所述蒸发器的1/3处之间的任一位置处。The second temperature detection device is arranged at any position between the bottom of the evaporator and 1/3 of the evaporator.
可选地，在所述除霜液体添加步骤之前还包括除霜判断步骤：根据预设程序判断是否需要对所述蒸发器进行除霜。Optionally, before the step of adding the defrosting liquid, a defrosting judging step is further included: judging whether the evaporator needs to be defrosted according to a preset program.
本发明的用于冰箱的蒸发器浸泡除冰方法，因为先将泵入除霜箱内的除霜液体静止，然后根据上下部液体温度之间的关系判断蒸发器上的霜冰是否清除干净，若清除干净且不用加热，否则进行加热和二次静止，然后在判断。静止可充分利用除霜液体的温度，显著提高了资源利用率，特别地，也使除霜液体自然分层，提高判断的准确性，以进一步达到节约能源的目的。同时根据实际需求进行除霜液体的加热，可提高除霜效率，节省除霜时间，因此可实现快速化霜与节约能耗的较佳平衡，显著提高了冰箱的能效。也就是说，该蒸发器浸泡除冰方法既能够快速化霜，又能节约能量，使化霜速度与能耗达到最佳配合。The evaporator immersion deicing method used in the refrigerator of the present invention, because the defrosting liquid pumped into the defrosting box is firstly static, and then judges whether the frost ice on the evaporator is cleared according to the relationship between the upper and lower liquid temperatures, If it is cleared and no heating is required, otherwise, heat and rest for a second time, and then judge. Standstill can make full use of the temperature of the defrosting liquid, which significantly improves the resource utilization rate. In particular, it also makes the defrosting liquid stratify naturally, improves the accuracy of judgment, and further achieves the purpose of saving energy. At the same time, the defrosting liquid is heated according to the actual demand, which can improve the defrosting efficiency and save the defrosting time. Therefore, a better balance between fast defrosting and energy saving can be achieved, and the energy efficiency of the refrigerator is significantly improved. That is to say, the evaporator immersion deicing method can not only quickly defrost, but also save energy, so that the speed of defrosting and energy consumption can be optimally coordinated.
进一步地，本发明的用于冰箱的蒸发器浸泡除冰方法中，加热装置加热后的水温略高于4℃，该温度不会对风道内的气流产生较大的影响，可防止风道内的气流温度升温过高，影响冰箱的制冷。Further, in the evaporator immersion deicing method used in refrigerators of the present invention, the temperature of the water heated by the heating device is slightly higher than 4°C, and this temperature will not have a great impact on the airflow in the air duct, which can prevent the air flow in the air duct. The air temperature rises too high, affecting the cooling of the refrigerator.
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.
附图说明Description of drawings
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：Hereinafter, some specific embodiments of the present invention will be described in detail by way of illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:
图1是根据本发明一个实施例的冰箱的示意性结构图；Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
图2是图1中的冰箱的后视局部透视图；Fig. 2 is a rear partial perspective view of the refrigerator in Fig. 1;
图3是根据本发明一个实施例的用于冰箱的蒸发器浸泡除冰方法的示意性流程图。Fig. 3 is a schematic flowchart of an evaporator immersion deicing method for a refrigerator according to an embodiment of the present invention.
具体实施方式Detailed ways
图1是根据本发明一个实施例的冰箱的示意性侧视图；图2是图1中的冰箱的后视局部透视图。参见图1和图2，本发明实施例的冰箱可包括储物间室11和用于向储物间室11提供冷量的蒸发器12。图1示出的冰箱具有两个储物间室11，在未示出的实施例中，冰箱也可仅具有一个储物间室11或者具有多于两个的储物间室11。如本领域技术人员可意识到的，除蒸发器12外，本发明实施例的冰箱与现有的间冷冰箱一样，还可包括压缩机13、冷凝器(图中未示出)以及节流元件(图中未示出)等。蒸发器12经由制冷剂管路(图中未示出)与压缩机13、冷凝器、节流元件连接，构成制冷循环回路，在压缩机13启动时降温。蒸发器12对流经其的空气进行冷却，以向储物间室11供应冷气。本领域技术人员应理解，本发明所称的“冰箱”并不限定为一般意义上的具有冷藏室和冷冻室且用于存储食物的冰箱，还可以是其他具有冷藏和/或冷冻功能的装置，例如冰柜、酒柜、冷藏罐等。FIG. 1 is a schematic side view of a refrigerator according to an embodiment of the present invention; FIG. 2 is a partial rear perspective view of the refrigerator in FIG. 1 . Referring to FIGS. 1 and 2 , the refrigerator according to the embodiment of the present invention may include a storage compartment 11 and an evaporator 12 for providing cooling capacity to the storage compartment 11 . The refrigerator shown in FIG. 1 has two storage compartments 11 , and in an embodiment not shown, the refrigerator may also have only one storage compartment 11 or more than two storage compartments 11 . As can be appreciated by those skilled in the art, except for the evaporator 12, the refrigerator of the embodiment of the present invention, like the existing indirect refrigerator, may also include a compressor 13, a condenser (not shown in the figure) and a throttling components (not shown in the figure), etc. The evaporator 12 is connected with the compressor 13, the condenser, and the throttling element through a refrigerant pipeline (not shown in the figure), forming a refrigeration cycle, and cooling down when the compressor 13 is started. The evaporator 12 cools air flowing therethrough to supply cool air to the storage compartment 11 . Those skilled in the art should understand that the "refrigerator" referred to in the present invention is not limited to a refrigerator with a refrigerator and a freezer for storing food in the general sense, and may also be other devices with refrigeration and/or freezing functions , such as freezers, wine cabinets, refrigerated tanks, etc.
在本发明实施例中，如图2所示，冰箱还可包括储液装置14和除霜箱15。储液装置14内容纳有除霜液体。在本发明实施例中，除霜液体可优选为水。在替代性实施例中，除霜液体也可为盐溶液等。储液装置14可邻近压缩机13设置，从而利用压缩机13开机时散发的热量将储液装置14中的除霜液体加热。具体地，储液装置14可设置在压缩机13仓中，与压缩机13横向并排设置，也可设置于压缩机13的上方。除霜箱15内限定有内部腔室，蒸发器12可设置在除霜箱15的内部腔室中。In the embodiment of the present invention, as shown in FIG. 2 , the refrigerator may further include a liquid storage device 14 and a defrosting box 15 . The liquid storage device 14 contains a defrosting liquid. In the embodiment of the present invention, the defrosting liquid may preferably be water. In alternative embodiments, the defrosting liquid may also be a saline solution or the like. The liquid storage device 14 can be arranged adjacent to the compressor 13, so that the defrosting liquid in the liquid storage device 14 can be heated by the heat dissipated when the compressor 13 is turned on. Specifically, the liquid storage device 14 can be arranged in the compartment of the compressor 13 , arranged laterally side by side with the compressor 13 , or arranged above the compressor 13 . An inner chamber is defined in the defrosting box 15 , and the evaporator 12 may be disposed in the inner chamber of the defrosting box 15 .
继续参见图1和图2，在储液装置14和除霜箱15之间还设置有管路***和泵送装置18。管路***可包括进液管道16和回液管道17。泵送装置18设置于进液管道16上。进一步地，该冰箱还可包括加热装置19，配置成加热除霜箱15内的除霜液体。加热装置19例如可为电加热丝等，优选地加热除霜箱15下部的除霜液体。加热装置19设置于除霜箱15的内部腔室的底部。Continuing to refer to FIG. 1 and FIG. 2 , a piping system and a pumping device 18 are also provided between the liquid storage device 14 and the defrosting box 15 . The piping system may include a liquid inlet pipe 16 and a liquid return pipe 17 . The pumping device 18 is disposed on the liquid inlet pipe 16 . Further, the refrigerator may further include a heating device 19 configured to heat the defrosting liquid in the defrosting box 15 . The heating device 19 can be, for example, an electric heating wire or the like, and preferably heats the defrosting liquid in the lower part of the defrosting box 15 . The heating device 19 is arranged at the bottom of the inner chamber of the defrosting box 15 .
进一步地，冰箱还包括液位开关20，配置成检测除霜箱15的内部腔室中的液面高度。泵送装置18还配置成当除霜箱15的液面高度达到设定液面阈值时关停，以停止向除霜箱15中泵送除霜液体。该设定液面阈值可以这样设置，即成当除霜箱15的液面高度达到设定液面阈值时，蒸发器12的至少一部分浸没在除霜液体中。在优选的实施例中，当除霜箱15的液面高度达到设定液面阈值时，蒸发器12的全部浸没在除霜液体中，从而加快对蒸发器12的除霜速度。该液位开关20可为液位传感器。Further, the refrigerator further includes a liquid level switch 20 configured to detect the liquid level in the inner chamber of the defrosting box 15 . The pumping device 18 is also configured to shut down when the liquid level of the defrosting tank 15 reaches a preset liquid level threshold, so as to stop pumping defrosting liquid into the defrosting tank 15 . The set liquid level threshold can be set in such a way that when the liquid level of the defrosting tank 15 reaches the set liquid level threshold, at least a part of the evaporator 12 is submerged in the defrosting liquid. In a preferred embodiment, when the liquid level of the defrosting tank 15 reaches the set liquid level threshold, the entire evaporator 12 is submerged in the defrosting liquid, thereby speeding up the defrosting speed of the evaporator 12 . The liquid level switch 20 can be a liquid level sensor.
特别地，发明人为了更好地确定蒸发器12上的霜或冰是否清除干净，提出了一种新颖的判断方法，其利用除霜箱15中上部除霜液体的温度和下部除霜液体的温度，以及与预设温度之间的关系进行判断。例如，若除霜箱15中上部除霜液体的温度大于或等于下部除霜液体的温度，且除霜箱15中下部除霜液体的温度大于或等于第一预设值时，则判断蒸发器12上的霜或冰基本上已经清除干净。因此，该实施例的冰箱还可包括第一温度检测装置21和第二温度检测装置22，分别检测除霜箱15中上部除霜液体的温度和下部除霜液体的温度。优选地，第一温度检测装置21设置于蒸发器12的高度的2/3处至蒸发器12的顶部；第二温度检测装置22设置于蒸发器12的底部至蒸发器12的1/3处。也就是说，第一温度检测装置设置于蒸发器的高度的2/3处与蒸发器的顶部之间的任一位置处；第二温度检测装置设置于蒸发器的底部与蒸发器的1/3处之间的任一位置处。第一温度检测装置21和第二温度检测装置22均可为温度传感器。Especially, in order to better determine whether the frost or ice on the evaporator 12 is removed, the inventor proposes a novel judging method, which utilizes the temperature of the upper defrosting liquid and the temperature of the lower defrosting liquid in the defrosting box 15. temperature, and the relationship with the preset temperature to judge. For example, if the temperature of the upper defrosting liquid in the defrosting box 15 is greater than or equal to the temperature of the lower defrosting liquid, and the temperature of the lower defrosting liquid in the defrosting box 15 is greater than or equal to the first preset value, then it is determined that the evaporator The frost or ice on 12 has been largely removed. Therefore, the refrigerator of this embodiment may further include a first temperature detection device 21 and a second temperature detection device 22 for detecting the temperature of the upper defrosting liquid and the temperature of the lower defrosting liquid in the defrosting box 15 respectively. Preferably, the first temperature detection device 21 is arranged at 2/3 of the height of the evaporator 12 to the top of the evaporator 12; the second temperature detection device 22 is arranged at the bottom of the evaporator 12 to 1/3 of the evaporator 12 . That is to say, the first temperature detection device is arranged at any position between 2/3 of the height of the evaporator and the top of the evaporator; the second temperature detection device is arranged at the bottom of the evaporator and 1/3 of the evaporator any of the 3 locations. Both the first temperature detection device 21 and the second temperature detection device 22 can be temperature sensors.
图3是根据本发明一个实施例的用于冰箱的蒸发器12浸泡除冰方法的示意性流程图。如图3所示，本发明实施例还提供了一种用于冰箱的蒸发器12浸泡除冰方法。该方法可包括如下步骤：Fig. 3 is a schematic flowchart of a method for immersing and deicing the evaporator 12 of a refrigerator according to an embodiment of the present invention. As shown in FIG. 3 , an embodiment of the present invention also provides a method for immersing and deicing the evaporator 12 of a refrigerator. The method may include the steps of:
除霜液体添加步骤：若需要对蒸发器12进行除霜，将储液装置14内的除霜液体导入除霜箱15中至一预设水位处，以使蒸发器12的至少部分浸没在除霜箱15中的除霜液体中。Defrost liquid addition step: if the evaporator 12 needs to be defrosted, the defrost liquid in the liquid storage device 14 is introduced into the defrost tank 15 to a preset water level, so that at least part of the evaporator 12 is submerged in the defrost In the defrosting liquid in the frost box 15.
第一液体静止检测步骤：第一预设时长后，检测除霜箱15中下部除霜液体的温度和上部除霜液体的温度。The first liquid static detection step: after the first preset time period, detect the temperature of the lower defrosting liquid and the temperature of the upper defrosting liquid in the defrosting box 15 .
判断执行步骤：若除霜箱15中上部除霜液体的温度大于或等于下部除霜液体的温度，且除霜箱15中下部除霜液体的温度大于或等于第一预设值时，将除霜箱15内的除霜液体导入储液装置14；否则，开启加热装置19，且在除霜箱15中下部除霜液体的温度大于第二预设值后关闭加热装置19，并进入第二液体静止检测步骤。Judgment execution steps: if the temperature of the upper defrosting liquid in the defrosting box 15 is greater than or equal to the temperature of the lower defrosting liquid, and the temperature of the lower defrosting liquid in the defrosting box 15 is greater than or equal to the first preset value, the defrosting liquid will be defrosted. The defrosting liquid in the frost box 15 is introduced into the liquid storage device 14; otherwise, the heating device 19 is turned on, and the heating device 19 is closed after the temperature of the bottom defrosting liquid in the defrosting box 15 is greater than the second preset value, and enters the second Liquid stillness detection procedure.
第二液体静止检测步骤：第二预设时长后，检测除霜箱15中下部除霜液体的温度和上部除霜液体的温度，并返回判断执行步骤。The second liquid static detection step: after the second preset period of time, detect the temperature of the lower defrosting liquid and the temperature of the upper defrosting liquid in the defrosting box 15, and return to the judgment execution step.
在本发明实施例中，不论是向除霜箱15中加入除霜液体，还是对除霜箱15内的除霜液体加热后，均需要静止，则是因为加入的除霜液体的温度高低不定或由于加热后除霜液体中的热量变化不定，又由于蒸发器12上结有的冰霜多少不定，因此，都先静置一段时间，可使冰箱根据里面的除霜液体自动根据不同温度而分层之后，再判定下一步动作，以进一步达到节约能源的目的；而且也可充分利用除霜液体携带的能量。In the embodiment of the present invention, whether it is to add defrosting liquid into the defrosting box 15, or after heating the defrosting liquid in the defrosting box 15, it needs to be still, because the temperature of the added defrosting liquid is variable. Or because the heat in the defrosting liquid after heating changes indefinitely, and because the amount of frost formed on the evaporator 12 is indefinite, therefore, all stand for a period of time first, so that the refrigerator can be automatically divided according to different temperatures according to the defrosting liquid in the inside. After layering, determine the next action to further achieve the purpose of saving energy; and also can make full use of the energy carried by the defrosting liquid.
在本发明的一些优选的实施例中，除霜液体为水。加热装置19配置成加热除霜箱15下部的除霜液体。蒸发器12的全部浸没在除霜箱15中的除霜液体中。利用第一温度检测装置21和第二温度检测装置22分别检测除霜箱15中上部除霜液体的温度和下部除霜液体的温度，分别获得上部温度T1和下部温度T2；且第一温度检测装置21设置于蒸发器12的高度的2/3处至蒸发器12的顶部；第二温度检测装置22设置于蒸发器12的底部至蒸发器12的1/3处。In some preferred embodiments of the present invention, the defrosting liquid is water. The heating device 19 is configured to heat the defrosting liquid in the lower part of the defrosting box 15 . The whole of the evaporator 12 is submerged in the defrosting liquid in the defrosting tank 15 . Use the first temperature detection device 21 and the second temperature detection device 22 to detect the temperature of the upper defrosting liquid and the temperature of the lower defrosting liquid in the defrosting box 15 respectively, and obtain the upper temperature T1 and the lower temperature T2 respectively; and the first temperature detection The device 21 is arranged at 2/3 of the height of the evaporator 12 to the top of the evaporator 12 ; the second temperature detection device 22 is arranged at the bottom of the evaporator 12 to 1/3 of the evaporator 12 .
第一预设值的取值范围为3.5℃至4.5℃，优选为4℃。第一预设时长的取值范围为4min至6min，优选为5min。第二预设时长的取值范围为40s至100s，优选为1min。在静置或自然条件下：当0℃≤T1≤T2＜4℃时，说明蒸发器12上可能还有冰霜存留。当4℃≤T2＜T1时，说明蒸发器12上基本没有冰霜了。T2温度越低，存留冰霜的可能性越大，若T2＝0℃了，则蒸发器12上几乎必定还有冰霜存在；而T2>4℃且温度越高，则上层水温更高，若有冰霜也早就化了，那么这时可以判定已化霜完毕。因此，低液位的除霜液体在加热过程中，测得的温度高低，也是初步判断是否化霜完毕，即是否先静置的标准。优选地，第一预设值等于第二预设值。当T2≤4℃时，说明加热时，还有大部分冰霜没化掉，因为加热上升的热水都遇上边的冰霜而降温。当T2>4℃时，说明已经有足够的热水冲过冰霜，对流到下层空间了，蒸发器12上的冰霜不多了，有可能通过已有的水中热能可以融化掉剩余的冰霜，进而再达到节能的目的。The value range of the first preset value is 3.5°C to 4.5°C, preferably 4°C. The value range of the first preset time length is 4 minutes to 6 minutes, preferably 5 minutes. The value range of the second preset duration is 40s to 100s, preferably 1min. Under static or natural conditions: when 0°C≤T1≤T2<4°C, it means that there may still be frost remaining on the evaporator 12 . When 4°C≤T2<T1, it means that there is basically no frost on the evaporator 12. The lower the T2 temperature, the greater the possibility of frost retention. If T2=0°C, there must be frost on the evaporator 12; while T2>4°C and the higher the temperature, the upper water temperature is higher. The frost has already melted, so it can be judged that the frost has been defrosted at this time. Therefore, during the heating process of the low-level defrosting liquid, the measured temperature is also the standard for preliminary judgment of whether the defrosting is completed, that is, whether to stand still first. Preferably, the first preset value is equal to the second preset value. When T2≤4℃, it means that most of the frost has not been melted during heating, because the heated hot water meets the frost on the side and cools down. When T2>4°C, it means that there is enough hot water to pass through the frost and convect to the lower space, and there is not much frost on the evaporator 12, and it is possible to melt the remaining frost through the heat energy in the water, and Reach the purpose of energy saving.
也就是说，本发明实施例的蒸发器12浸泡除冰方法的控制机理可为：当泵入水的过程中，液位传感器判断液位是否已到，若到，则停止泵入，静置一段时间，来判断水温状态，若冰霜少或泵入的水温高，泵入的水足以融化掉冰霜，即4℃≤T2＜T1，则直接可以排水而无需额外加热，以节约能源。若冰霜多或泵入的水温低，泵入的水不能够保证足以融化掉冰霜，即0℃≤T1≤T2＜4℃，保险起见，就当做仍有冰霜而需要加热融化。加热过程中，若T2≤4℃，需要继续进行加热化霜，直至T2>4℃，可能没有冰霜了而静置一段时间判断。接着判断冰霜是否全部化掉。在实际操作过程中，最多一两次循环就可以使冰霜全部化掉。直到4℃≤T2＜T1，且T2基本上不变，化霜彻底完成，排水。在该实施例中，要通过加热丝分多次加热，并判断加热后的水温，来判定是否化霜完毕，而非定时加热，可实现智能判断和节省电能，并提高冰箱能效。That is to say, the control mechanism of the evaporator 12 immersion deicing method in the embodiment of the present invention can be: when pumping in the water, the liquid level sensor judges whether the liquid level has reached, if so, then stop pumping in, and let it stand for a while Time, to judge the state of water temperature, if there is little frost or the temperature of the pumped water is high, the pumped water is enough to melt the frost, that is, 4℃≤T2<T1, then the water can be drained directly without additional heating to save energy. If there is a lot of frost or the temperature of the pumped water is low, the pumped water cannot guarantee enough to melt the frost, that is, 0°C ≤ T1 ≤ T2 < 4°C. To be on the safe side, it is considered that there is still frost and needs to be heated and melted. During the heating process, if T2≤4℃, it is necessary to continue heating and defrosting until T2>4℃, there may be no frost, so let it stand for a period of time to judge. Then judge whether the frost is completely melted. In the actual operation process, at most one or two cycles can completely melt the frost. Until 4℃≤T2<T1, and T2 is basically unchanged, the defrosting is completely completed, and the water is drained. In this embodiment, the heating wire is heated several times, and the temperature of the heated water is judged to determine whether the defrosting is complete, instead of timing heating, which can realize intelligent judgment and save electric energy, and improve the energy efficiency of the refrigerator.
在本发明的一些实施例中，在除霜液体添加步骤之前还包括除霜判断步骤：根据预设程序判断是否需要对蒸发器12进行除霜。预设程序可为冰箱常用的是否需要除霜判断方法。在一些替代性实施例中，也可设置除霜按钮，以使用户根据需求启动对蒸发器12的除霜除冰。In some embodiments of the present invention, before the step of adding the defrosting liquid, a defrosting judging step is further included: judging whether the evaporator 12 needs to be defrosted according to a preset program. The preset program can be a commonly used method for judging whether defrosting is required for refrigerators. In some alternative embodiments, a defrost button may also be provided, so that the user can start defrosting and deicing the evaporator 12 according to needs.
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
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