WO2018121593A1 - 冰箱节能制冷系统及具有该系统的冰箱运行方法 - Google Patents

冰箱节能制冷系统及具有该系统的冰箱运行方法 Download PDF

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WO2018121593A1
WO2018121593A1 PCT/CN2017/118943 CN2017118943W WO2018121593A1 WO 2018121593 A1 WO2018121593 A1 WO 2018121593A1 CN 2017118943 W CN2017118943 W CN 2017118943W WO 2018121593 A1 WO2018121593 A1 WO 2018121593A1
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WIPO (PCT)
Prior art keywords
refrigerating
evaporator
refrigerator
freezing
way valve
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PCT/CN2017/118943
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English (en)
French (fr)
Inventor
曹东强
刘建如
朱小兵
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青岛海尔股份有限公司
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Publication of WO2018121593A1 publication Critical patent/WO2018121593A1/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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • 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
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • 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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2511—Evaporator distribution valves
    • 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

Definitions

  • the invention relates to the field of household appliances, in particular to a refrigerator energy-saving refrigeration system, a refrigerator having the same and a running method thereof.
  • FIG. 1 A series-parallel refrigeration system of a conventional refrigerator is shown in FIG. 1, and includes a compressor 11, a condenser 12, a three-way valve 13, a refrigerating capillary 141, a freezing capillary 142, a refrigerating evaporator 151, a cold-cooling evaporator 152, and a dry filter. 18.
  • a compressor 11 a condenser 12
  • a three-way valve 13 a refrigerating capillary 141
  • a freezing capillary 142 a refrigerating evaporator 151
  • a cold-cooling evaporator 152 a cold-cooling evaporator
  • the specific refrigerant connection direction is as follows: compressor 11 ⁇ condenser 12 ⁇ drying filter 18 ⁇ three-way valve 13 ⁇ refrigerating capillary 141 ⁇ refrigerating evaporator 151 ⁇ freezing evaporation
  • the compressor 152 ⁇ the compressor 11; the refrigerant flow during the freezing of the inside of the freezing chamber is: compressor 11 ⁇ condenser 12 ⁇ drying filter 18 ⁇ three-way valve 13 ⁇ freezing capillary 142 ⁇ freezing evaporator 152 ⁇ compressor 11 .
  • the refrigerant compressed by the compressor 11 enters the condenser 12, and the refrigerant condensed by the condenser 12 is dried by the drying filter 18 and then flows into the three-way valve 13, the three-way valve 13 selectively connects the refrigerating capillary 141 or the freezing capillary 142.
  • the three-way valve 13 communicates with the refrigerating capillary 141, and the refrigerant depressurized by the refrigerating capillary 141 enters the refrigerating evaporator 151, and is evaporated by the refrigerating evaporator 151 to achieve internal refrigeration of the refrigerating compartment, and refrigerating
  • the refrigerant of the evaporator 151 needs to be further evaporated by the freezing evaporator 152 and then returned to the compressor 11, which is designed to ensure that the refrigerant flowing back to the compressor 11 has a suitable pressure and temperature range; the refrigeration process in the freezing chamber
  • the three-way valve 13 is connected to the freezing capillary 142, and the refrigerant depressurized by the freezing capillary 142 enters the freezing evaporator 152, and is evaporated by the freezing evaporator 152 to realize internal refrigeration of the freezing chamber, and the refrigerant of the freezing evaporator 152 Flow directly back
  • the conventional series-parallel refrigerator refrigeration system has the following problems in the refrigeration process: during the initial stage of the refrigeration internal refrigeration process or when a lot of hot food is suddenly placed in the refrigeration compartment, the refrigerant in the refrigerating evaporator passes through the heat exchange with the refrigerating compartment. After the higher temperature, the higher temperature refrigerant enters the freezing evaporator during the downward flow. At this time, the temperature of the refrigerant itself may be higher than the temperature inside the freezing chamber, so that the freezing evaporator cannot reduce or maintain the freezing chamber. The temperature will, on the contrary, accelerate the increase in the temperature of the food stored in the freezer, resulting in poor food preservation and energy waste.
  • the present invention aims to at least solve one of the technical problems existing in the prior art.
  • the present invention provides an energy-saving refrigeration system for a refrigerator, which is specifically designed as follows.
  • a refrigerator energy-saving refrigeration system comprising a compressor, a condenser, a refrigerating capillary, a refrigerating evaporator, a freezing capillary, and a freezing evaporator, wherein an outlet end of the compressor is connected to an inlet end of the condenser, the condensation
  • the outlet end of the device is provided with a first three-way valve, and the refrigerating capillary is disposed in parallel with the freezing capillary at two outlet ends of the first three-way valve; the outlet end of the freezing capillary and the freezing evaporation
  • the inlet end of the freezing evaporator is connected to the inlet end of the compressor; the outlet end of the refrigerating capillary is connected to the inlet end of the refrigerating evaporator, the outlet end of the refrigerating evaporator a second three-way valve is provided, one outlet end of the second three-way valve is directly connected to the inlet end of the compressor, and the other outlet end of the
  • the outlet end of the freezing evaporator is provided with a one-way valve, and the freezing evaporator is connected to the inlet end of the compressor through the one-way valve.
  • the refrigerator refrigeration system further includes a temperature sensor for monitoring a temperature of the refrigerant flowing out of the outlet end of the refrigerating evaporator for heat exchange.
  • first three-way valve and the second three-way valve are both electromagnetic three-way valves.
  • a drying filter is further disposed between the condenser and the first three-way valve.
  • the refrigerator refrigeration system further includes a refrigerating fan and a freezing fan respectively for realizing the cold storage of the refrigerating evaporator and the refrigerating evaporator.
  • the present invention also provides a method of operating a refrigerator, the refrigerator including a refrigerating compartment and a freezing compartment, the refrigerator further comprising the above-described refrigerator energy-saving refrigerating system, the refrigerating evaporator being used for the interior of the refrigerating compartment Cooling, the freezing evaporator is used to cool the inside of the freezing chamber, and when the refrigerator is running, performing cooling according to one of the following steps:
  • the first three-way valve is connected to the inlet end of the freezing capillary, and the refrigerant for heat exchange is depressurized by the freezing capillary and then enters a freezing evaporator, and the freezing evaporator cools the inside of the freezing chamber;
  • the first three-way valve is connected to the inlet end of the refrigerating capillary tube
  • the second three-way valve is directly connected to the inlet end of the compressor
  • the refrigerant is depressurized by the refrigerating capillary tube and then enters the refrigerating evaporator, and the refrigerating evaporator is connected to the refrigerating chamber Internal cooling;
  • the first three-way valve is connected to the inlet end of the refrigerating capillary
  • the second three-way valve is connected to the inlet end of the refrigerating evaporator
  • the refrigerant is depressurized by the refrigerating capillary to enter the refrigerating evaporator
  • the refrigerating evaporator is The inside of the refrigerating compartment is cooled, and the refrigerant flowing out from the outlet end of the refrigerating evaporator enters the refrigerating evaporator and is returned from the outlet end of the refrigerating evaporator to the compressor.
  • the refrigerator refrigeration system further includes a temperature sensor for monitoring a refrigerant temperature T flowing out from an outlet end of the refrigerating evaporator; and when the refrigerating compartment is cooled, the first three-way valve is connected At the inlet end of the refrigerating capillary tube, if the temperature of the refrigerant temperature T is higher than the temperature inside the freezing chamber, the refrigerator is cooled in a rapid cooling step, and if the temperature of the refrigerant temperature T is not higher than the temperature inside the freezing chamber, the refrigerator is cooled in a normal cooling step.
  • the utility model has the beneficial effects that: in the structure of the refrigerator refrigeration system of the invention, in the refrigeration process of the refrigerator interior, if the refrigerating evaporator and the refrigerating chamber have sufficient heat exchange, the refrigerant temperature at the outlet end of the refrigerating evaporator is higher than the freezing chamber.
  • the temperature of the refrigerant flowing out of the refrigerated evaporator can be directly returned to the compressor to avoid causing the temperature inside the freezing chamber to rise; if the refrigerating evaporator and the refrigerating chamber exchange heat, the refrigerant temperature at the outlet end of the refrigerating evaporator is not higher than the freezing temperature.
  • the temperature of the chamber, the refrigerant flowing out of the refrigerating evaporator, can further enter the refrigerating evaporator to achieve refrigeration inside the freezing chamber.
  • This design method can effectively achieve energy saving in the refrigerator and meet the environmental protection requirements of family life.
  • FIG. 1 is a schematic structural view of a series-parallel refrigeration system in the prior art
  • FIG. 2 is a schematic structural view of an energy-saving refrigeration system for a refrigerator according to the present invention
  • 11 is a compressor
  • 12 is a condenser
  • 13 is a three-way valve
  • 141 is a refrigerated capillary
  • 142 is a freezing capillary
  • 151 is a refrigerated evaporator
  • 152 is a cold-cooled evaporator
  • 18 is a dry filter
  • 20 is a temperature sensor
  • 21 is a compressor
  • 22 is a condenser
  • 23 is a first three-way valve
  • 241 is a refrigerating capillary
  • 242 is a freezing capillary
  • 251 is a refrigerating evaporator
  • 252 is a refrigerating evaporator
  • 26 For the second three-way valve, 27 check valves, 28 dry filters.
  • FIG. 2 it is a schematic structural diagram of an energy-saving refrigeration system for a refrigerator according to the present invention.
  • the refrigerator energy-saving refrigeration system of the present invention includes a compressor 21, a condenser 22, a refrigerating capillary 241, a refrigerating evaporator 251, a freezing capillary 242, and a freezing evaporator 252.
  • the outlet end of the compressor 21 is connected to the inlet end of the condenser 22, the outlet end of the condenser 22 is provided with a first three-way valve 23, and the refrigerating capillary 241 is disposed in parallel with the freezing capillary 242 at the first three-way valve 23.
  • an outlet end of the freezing capillary 242 is connected to the inlet end of the freezing evaporator 252, an outlet end of the freezing evaporator 252 is connected to the inlet end of the compressor 21; an outlet end of the refrigerating capillary 241 is connected to the inlet of the refrigerating evaporator 251 Connected to the end, the outlet end of the refrigerating evaporator 251 is provided with a second three-way valve 26, one outlet end of the second three-way valve 26 is directly connected to the inlet end of the compressor 21, and the other outlet end of the second three-way valve 26 is connected.
  • the respective components constituting the refrigeration system of the refrigerator are connected by a refrigerant pipe (not shown) through which the refrigerant flows.
  • the outlet end of the freezing evaporator 252 is provided with a check valve 27, and the freezing evaporator 252 is connected to the inlet end of the compressor 21 through a check valve 27, and a check valve 27 is provided for
  • the prevention of the pressure difference causes the refrigerant flowing directly from the refrigerating evaporator 251 to the compressor 21 to flow back into the inside of the refrigerating evaporator 252, and it is possible to prevent the recirculating refrigerant from causing an increase in the temperature inside the freezing chamber.
  • the refrigerator refrigeration system further includes a temperature sensor 20 for monitoring the temperature of the refrigerant flowing out from the outlet end of the refrigerating evaporator 251 for heat exchange.
  • the temperature sensor 20 is disposed at On the refrigerant pipe at the outlet end of the refrigerating evaporator 251, when the refrigerant flows through the refrigerating evaporator 251, the temperature sensor 20 is used to monitor the temperature of the refrigerant flowing out from the outlet end of the refrigerating evaporator 251 in real time, and feed it back to the control system of the refrigerator ( Although the control system is not shown in the figure, it is easier to understand that the control system of the refrigerator is used to control the specific operation process of the refrigerator, thereby controlling the specific operation of the refrigerator.
  • the first three-way valve 23 and the second three-way valve 26 are both electromagnetic three-way valves, and the three-way valve is controlled by a control system of the refrigerator to select a flow path of the refrigerant, thereby implementing the refrigerator.
  • the operation of different modes, the specific operation mode refers to the operation method of the subsequent refrigerator.
  • a drying filter is further disposed between the condenser 22 and the first three-way valve 23.
  • the refrigerator refrigeration system further includes a refrigerating fan and a refrigerating fan for realizing the cold transfer of the refrigerating evaporator 251 and the refrigerating evaporator 252, that is, the refrigerator realizes cooling of the interior of the compartment by air cooling, and of course, in other embodiments,
  • the refrigerator can also be cooled by direct cooling.
  • the invention provides a refrigerator, including a refrigerating compartment and a freezing compartment, on the basis of the above refrigerator refrigeration system, and the refrigerator further comprises the above refrigerator energy-saving refrigerating system, wherein the refrigerating evaporator 251 is used for refrigerating the refrigerating compartment, the freezing evaporator 252 is used to cool the interior of the freezing compartment.
  • the present invention also provides a method for operating a refrigerator.
  • the cooling is performed according to one of the following steps:
  • the first three-way valve 23 is connected to the inlet end of the freezing capillary 242, and the refrigerant for heat exchange is depressurized by the freezing capillary 242 and then enters the freezing evaporator 252, and the freezing evaporator 252 cools the inside of the freezing chamber;
  • the first three-way valve 23 is connected to the inlet end of the refrigerating capillary 241
  • the second three-way valve 26 is directly connected to the inlet end of the compressor 21, and the refrigerant is depressurized by the refrigerating capillary 241 and then enters the refrigerating evaporator 251, and is refrigerated and evaporated.
  • the device 251 cools the interior of the refrigerating compartment;
  • the first three-way valve 23 communicates with the inlet end of the refrigerating capillary 241
  • the second three-way valve 26 communicates with the inlet end of the refrigerating evaporator 252
  • the refrigerator 251 cools the inside of the refrigerating compartment, and the refrigerant flowing out from the outlet end of the refrigerating evaporator 251 enters the refrigerating evaporator 252 and is returned to the compressor 21 from the outlet end of the refrigerating evaporator 252.
  • the refrigerator refrigeration system of the present invention has a temperature sensor 20 which, in some embodiments, is disposed directly at the outlet end of the refrigerated evaporator 251 for monitoring the temperature T of the refrigerant flowing from the outlet end of the refrigerated evaporator 251.
  • the first three-way valve 23 communicates with the inlet end of the refrigerating capillary 241. If the temperature of the refrigerant temperature T detected by the temperature sensor 20 is higher than the temperature inside the freezing compartment, the refrigerator is cooled by the rapid cooling step; if the refrigerant temperature The temperature of T is not higher than the temperature inside the freezing chamber, and the refrigerator is cooled in a normal cooling step.
  • a temperature sensor is also disposed in the freezing compartment and the refrigerating compartment for monitoring the temperature of the freezing compartment or the interior of the refrigerating compartment, and the temperature monitored by the temperature sensor is fed back to the control system of the refrigerator, and the control system is judged. Make the appropriate refrigerator run options.
  • the control system of the refrigerator selects the operation steps according to the internal needs of the refrigerator. For example, when the refrigerating compartment needs to be cooled, and the outlet end temperature T of the refrigerating evaporator 251 is not higher than the temperature inside the freezing compartment, the refrigerator can be operated according to the ordinary refrigerating and cooling step, and the freezing compartment can be ensured while the refrigerating compartment is cooled. Low temperature; when a large amount of food to be refrigerated is suddenly placed inside the refrigerator compartment, the heat exchange between the refrigerator refrigerating evaporator and the refrigerating compartment is relatively stable, which causes the outlet end temperature T of the refrigerating evaporator 251 to be higher than the temperature inside the freezing compartment.
  • the refrigeration system operates according to the rapid refrigerating and cooling step, so that the rapid cooling inside the refrigerating compartment is achieved without adversely affecting the freezing compartment; when the freezing compartment needs to be cooled and the refrigerating compartment does not need to be cooled temporarily, the refrigerator can be operated according to the freezing and cooling steps.
  • the refrigerator energy-saving refrigeration system provided by the invention has multiple operation modes, and the utility model can better meet the daily needs of the user, and can better realize the energy-saving requirements.

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  • Physics & Mathematics (AREA)
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Abstract

提供一种冰箱节能制冷系统及具有该系统的冰箱运行方法。该冰箱制冷系统中，冷藏蒸发器（251）出口端的制冷剂根据流出时的温度高低选择是否进入冷冻蒸发器（252），从而有效实现冰箱节能。

Description

冰箱节能制冷系统及具有该系统的冰箱运行方法
本申请要求了申请日为2016年12月28日，申请号为201611238378.0，发明名称为“冰箱节能制冷系统、具有该系统的冰箱及其运行方法”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
本发明涉及家用电器领域，尤其涉及一种冰箱节能制冷系统、具有该系统的冰箱及其运行方法。
背景技术
传统冰箱的串并联制冷系统参考图1所示，其包括，压缩机11、冷凝器12、三通阀13、冷藏毛细管141、冷冻毛细管142、冷藏蒸发器151、冷冷蒸发器152以及干燥过滤器18。其具体连接方式参考图1所示，冷藏室内部制冷时的制冷剂走向为：压缩机11→冷凝器12→干燥过滤器18→三通阀13→冷藏毛细管141→冷藏蒸发器151→冷冻蒸发器152→压缩机11；冷冻室内部制冷时制冷剂走向为：压缩机11→冷凝器12→干燥过滤器18→三通阀13→冷冻毛细管142→冷冻蒸发器152→压缩机11。
更为具体的，在冰箱制冷过程中，压缩机11压缩后的制冷剂进入冷凝器12，由冷凝器12冷凝处理的制冷剂经干燥过滤器18干燥后流进三通阀13，三通阀13选择性连通冷藏毛细管141或冷冻毛细管142。在冷藏室内部制冷过程中，三通阀13连通冷藏毛细管141，经冷藏毛细管141降压后的制冷剂进入冷藏蒸发器151，并通过冷藏蒸发器151进行蒸发以实现冷藏室的内部制冷，冷藏蒸发器151的制冷剂需要经过冷冻蒸发器152进一步蒸发后再流回压缩机11，如此设计可以保证回流到压缩机11时的制冷剂具有较为合适的压力及温度范围；在冷冻室内部制冷过程中，三通阀13连通冷冻毛细管142，经冷冻毛细管142降压后的制冷剂进入冷冻蒸发器152，并通过冷冻蒸发器152进行蒸发以实现冷冻室的内部制冷， 冷冻蒸发器152的制冷剂直接流回压缩机11。
然传统的串并联冰箱制冷系统在制冷过程中存在以下问题：在冷藏内部制冷过程的初期或者冷藏室内部突然放入较多热食品的时候，冷藏蒸发器内的制冷剂经过与冷藏室换热后温度较高，较高温度制冷剂在向下流动过程中进入到冷冻蒸发器，此时制冷剂本身的温度有可能高于冷冻室内部的温度，导致冷冻蒸发器不能降低或维持冷冻室内的温度，反而会加速冷冻室内存储食品温度的升高，从而造成食品冷冻保鲜效果不佳以及能源浪费。
有鉴于此，有必要提供一种改进的冰箱制冷系统以解决上述问题。
发明内容
本发明旨在至少解决现有技术存在的技术问题之一，为实现上述发明目的，本发明提供了一种冰箱节能制冷系统，其具体设计方式如下。
一种冰箱节能制冷系统，包括压缩机、冷凝器、冷藏毛细管、冷藏蒸发器、冷冻毛细管以及冷冻蒸发器，其中，所述压缩机的出口端连接至所述冷凝器的进口端，所述冷凝器的出口端设置有第一三通阀，所述冷藏毛细管与所述冷冻毛细管并联的设置于所述第一三通阀的两个出口端；所述冷冻毛细管的出口端与所述冷冻蒸发器的入口端相连，所述冷冻蒸发器的出口端连接至所述压缩机的入口端；所述冷藏毛细管的出口端与所述冷藏蒸发器的入口端相连，所述冷藏蒸发器的出口端设置有第二三通阀，所述第二三通阀的一个出口端直接连接所述压缩机的入口端，所述第二三通阀的另一个出口端连接所述冷冻蒸发器的入口端。
进一步，所述冷冻蒸发器的出口端设置有单向阀，所述冷冻蒸发器通过所述单向阀连接所述压缩机的入口端。
进一步，所述冰箱制冷系统还包括温度传感器，所述温度传感器用于监测由所述冷藏蒸发器出口端流出用以供热交换的制冷剂温度。
进一步，所述第一三通阀与所述第二三通阀均为电磁三通阀。
进一步，所述冷凝器与所述第一三通阀之间还设置有干燥过滤器。
进一步，所述冰箱制冷系统还包括分别用以实现所述冷藏蒸发器、冷冻蒸发器冷量转移 的冷藏风扇、冷冻风扇。
另外，本发明还提供了一种冰箱的运行方法，所述冰箱包括冷藏室以及冷冻室，所述冰箱还包括以上所述的冰箱节能制冷系统，所述冷藏蒸发器用以对所述冷藏室内部制冷，所述冷冻蒸发器用以对所述冷冻室内部制冷，所述冰箱运行时，按以下步骤之一进行制冷：
冷冻制冷步骤，第一三通阀连通冷冻毛细管入口端，用以供热交换的制冷剂经所述冷冻毛细管降压后进入冷冻蒸发器，所述冷冻蒸发器对冷冻室内部进行制冷；
快速冷藏制冷步骤，第一三通阀连通冷藏毛细管入口端，第二三通阀直接连通压缩机的入口端，制冷剂经冷藏毛细管降压后进入冷藏蒸发器，所述冷藏蒸发器对冷藏室内部进行制冷；
普通冷藏制冷步骤，第一三通阀连通冷藏毛细管入口端，第二三通阀连通所述冷冻蒸发器的入口端，制冷剂经冷藏毛细管降压后进入冷藏蒸发器，所述冷藏蒸发器对冷藏室内部进行制冷，由所述冷藏蒸发器出口端流出的制冷剂进入所述冷冻蒸发器，并从所述冷冻蒸发器出口端回流至所述压缩机。
进一步，所述冰箱制冷系统还包括温度传感器，所述温度传感器用于监测由所述冷藏蒸发器出口端流出的制冷剂温度T；所述冷藏室内部制冷时，所述第一三通阀连通所述冷藏毛细管入口端，若制冷剂温度T温度高于冷冻室内部温度，冰箱按快速制冷步骤制冷，若制冷剂温度T温度不高于冷冻室内部温度，冰箱按普通制冷步骤制冷。
本发明的有益效果是：基本本发明冰箱制冷系统的结构，在冷藏室内部制冷过程中，若冷藏蒸发器与冷藏室的换热比较充分，即冷藏蒸发器出口端的制冷剂温度高于冷冻室的温度，由冷藏蒸发器流出的制冷剂可以直接回流至压缩机而避免造成冷冻室内部温度升高；若冷藏蒸发器与冷藏室的换热后冷藏蒸发器出口端的制冷剂温度不高于冷冻室的温度，冷藏蒸发器流出的制冷剂可以进一步进入冷冻蒸发器以实现冷冻室内部制冷。如此设计方式能够较为有效的实现冰箱节能，符合家庭生活的环保要求。
附图说明
图1所示为现有技术中串并联制冷系统结构示意图；
图2所示为本发明冰箱节能制冷系统的结构示意图；
图中，
现有技术中，11为压缩机，12为冷凝器，13为三通阀，141为冷藏毛细管，142为冷冻毛细管，151为冷藏蒸发器，152为冷冷蒸发器，18为干燥过滤器；
本发明中，20为温度传感器，21为压缩机，22为冷凝器，23为第一三通阀，241为冷藏毛细管，242为冷冻毛细管，251为冷藏蒸发器，252为冷冻蒸发器，26为第二三通阀，27单向阀，28干燥过滤器。
具体实施方式
以下将结合附图所示的实施方式对本发明进行详细描述，请参照图2，其为本发明冰箱节能制冷系统的结构示意图。
如图2所示，本发明的冰箱节能制冷系统，包括压缩机21、冷凝器22、冷藏毛细管241、冷藏蒸发器251、冷冻毛细管242以及冷冻蒸发器252。
其中，压缩机21的出口端连接至冷凝器22的进口端，冷凝器22的出口端设置有第一三通阀23，冷藏毛细管241与冷冻毛细管242并联的设置于第一三通阀23的两个出口端；冷冻毛细管242的出口端与冷冻蒸发器252的入口端相连，冷冻蒸发器252的出口端连接至压缩机21的入口端；冷藏毛细管241的出口端与冷藏蒸发器251的入口端相连，冷藏蒸发器251的出口端设置有第二三通阀26，第二三通阀26的一个出口端直接连接压缩机21的入口端，第二三通阀26的另一个出口端连接冷冻蒸发器252的入口端。
具体在本发明中，以上构成冰箱制冷系统的各个零部件之间是通过供制冷剂流动的制冷剂管道(图纸未标示)连接。
参考图2所示，在本实施例中，冷冻蒸发器252的出口端设置有单向阀27，冷冻蒸发器252通过单向阀27连接压缩机21的入口端，设置单向阀27用以防止压力差导致由冷藏蒸发器251直接流向压缩机21的制冷剂回流至冷冻蒸发器252内部，可以避免回流的制冷 剂造成冷冻室内部温度的升高。
在本发明中，冰箱制冷系统还包括温度传感器20，温度传感器20用于监测由冷藏蒸发器251出口端流出用以供热交换的制冷剂温度，具体的在实施过程中，温度传感器20设置于冷藏蒸发器251出口端的制冷剂管道上，在制冷剂流经冷藏蒸发器251时，温度传感器20用于实时监测由冷藏蒸发器251出口端流出的制冷剂温度，并反馈给冰箱的控制系统(图中虽未示出控制系统，但较为容易理解，冰箱的控制系统用于控制冰箱的具体运行过程)，进而控制冰箱的具体运行。
在本发明的一些具体实施过程中，第一三通阀23与第二三通阀26均为电磁三通阀，三通阀通过冰箱的控制系统控制以选择制冷剂的流通路径，进而实现冰箱不同模式的运行，具体运行方式参考后续冰箱的运行方法。
在本发明的一具体实施例中，冷凝器22与第一三通阀23之间还设置有干燥过滤器。冰箱制冷系统还包括分别用以实现冷藏蒸发器251、冷冻蒸发器252冷量转移的冷藏风扇、冷冻风扇，即冰箱通过风冷的方式实现间室内部的制冷，当然在另一些实施例中，冰箱也可以通过直冷的方式实现制冷。
本发明在以上冰箱制冷系统的基础上提供了一种冰箱，包括冷藏室以及冷冻室，冰箱还包括以上的冰箱节能制冷系统，其中，冷藏蒸发器251用以对冷藏室内部制冷，冷冻蒸发器252用以对冷冻室内部制冷。
另外，本发明还提供了一种冰箱的运行方法，冰箱运行时，按以下步骤之一进行制冷：
冷冻制冷步骤，第一三通阀23连通冷冻毛细管242入口端，用以供热交换的制冷剂经冷冻毛细管242降压后进入冷冻蒸发器252，冷冻蒸发器252对冷冻室内部进行制冷；
快速冷藏制冷步骤，第一三通阀23连通冷藏毛细管241入口端，第二三通阀26直接连通压缩机21的入口端，制冷剂经冷藏毛细管241降压后进入冷藏蒸发器251，冷藏蒸发器251对冷藏室内部进行制冷；
普通冷藏制冷步骤，第一三通阀23连通冷藏毛细管241入口端，第二三通阀26连通冷冻蒸发器252的入口端，制冷剂经冷藏毛细管241降压后进入冷藏蒸发器251，冷藏蒸发器251对冷藏室内部进行制冷，由冷藏蒸发器251出口端流出的制冷剂进入冷冻蒸发器252， 并从冷冻蒸发器252出口端回流至压缩机21。
本发明的冰箱制冷系统具有温度传感器20，在一些具体实施过程中，温度传感器20直接设置于冷藏蒸发器251的出口端，其用于监测由冷藏蒸发器251出口端流出的制冷剂温度T。
冷藏室内部制冷时，第一三通阀23连通冷藏毛细管241入口端，若温度传感器20所监测到的制冷剂温度T温度高于冷冻室内部温度，冰箱按快速制冷步骤制冷；若制冷剂温度T温度不高于冷冻室内部温度，冰箱按普通制冷步骤制冷。在本发明的冰箱中，冷冻室与冷藏室内也均设置有温度传感器，用于监测冷冻室或冷藏室内部的温度，温度传感器所监测的温度均反馈给冰箱的控制系统，控制系统经判断后作出相应的冰箱运行选择。
即在具体应用过程中，冰箱的控制系统根据冰箱内部需求选择运行步骤。例如，当冷藏室需要制冷时，且冷藏蒸发器251的出口端温度T不高于冷冻室内部温度，冰箱可按普通冷藏制冷步骤运行，在实现冷藏室制冷的同时，可以保证冷冻室具有较低的温度；而当冷藏室内部突然放置大量需要冷藏的食物时，冰箱冷藏蒸发器与冷藏室内部换热较稳充分，会导致冷藏蒸发器251的出口端温度T高于冷冻室内部温度，此时制冷系统按快速冷藏制冷步骤运行，实现冷藏室内部的快速制冷而不会对冷冻室造成负面影响；当冷冻室需要制冷而冷藏室暂时无需制冷时，冰箱按冷冻制冷步骤运行即可。
本发明所提供的冰箱节能制冷系统具有多种运行模式，通过其配合使用，可以较好的满足用户日常需求，且可以较好的实现节能要求。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式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，各实施方式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方式。
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方式的具体说明，它们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方式或变更均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种冰箱节能制冷系统，包括压缩机、冷凝器、冷藏毛细管、冷藏蒸发器、冷冻毛细管以及冷冻蒸发器，其特征在于，
    所述压缩机的出口端连接至所述冷凝器的进口端，所述冷凝器的出口端设置有第一三通阀，所述冷藏毛细管与所述冷冻毛细管并联的设置于所述第一三通阀的两个出口端；
    所述冷冻毛细管的出口端与所述冷冻蒸发器的入口端相连，所述冷冻蒸发器的出口端连接至所述压缩机的入口端；
    所述冷藏毛细管的出口端与所述冷藏蒸发器的入口端相连，所述冷藏蒸发器的出口端设置有第二三通阀，所述第二三通阀的一个出口端直接连接所述压缩机的入口端，所述第二三通阀的另一个出口端连接所述冷冻蒸发器的入口端。
  2. 根据权利要求1所述的冰箱节能制冷系统，其特征在于，所述冷冻蒸发器的出口端设置有单向阀，所述冷冻蒸发器通过所述单向阀连接所述压缩机的入口端。
  3. 根据权利要求1所述的冰箱节能制冷系统，其特征在于，所述冰箱制冷系统还包括温度传感器，所述温度传感器用于监测由所述冷藏蒸发器出口端流出用以供热交换的制冷剂温度。
  4. 根据权利要求1所述的冰箱节能制冷系统，其特征在于，所述第一三通阀与所述第二三通阀均为电磁三通阀。
  5. 根据权利要求1所述的冰箱节能制冷系统，其特征在于，所述冷凝器与所述第一三通阀之间还设置有干燥过滤器。
  6. 根据权利要求1所述的冰箱节能制冷系统，其特征在于，所述冰箱制冷系统还包括分别用以实现所述冷藏蒸发器、冷冻蒸发器冷量转移的冷藏风扇、冷冻风扇。
  7. 一种冰箱的运行方法，所述冰箱包括冷藏室以及冷冻室，其特征在于，所述冰箱还 包括权利要求1所述的冰箱节能制冷系统，所述冷藏蒸发器用以对所述冷藏室内部制冷，所述冷冻蒸发器用以对所述冷冻室内部制冷，所述冰箱运行时，按以下步骤之一进行制冷：
    冷冻制冷步骤，第一三通阀连通冷冻毛细管入口端，用以供热交换的制冷剂经所述冷冻毛细管降压后进入冷冻蒸发器，所述冷冻蒸发器对冷冻室内部进行制冷；
    快速冷藏制冷步骤，第一三通阀连通冷藏毛细管入口端，第二三通阀直接连通压缩机的入口端，制冷剂经冷藏毛细管降压后进入冷藏蒸发器，所述冷藏蒸发器对冷藏室内部进行制冷；
    普通冷藏制冷步骤，第一三通阀连通冷藏毛细管入口端，第二三通阀连通所述冷冻蒸发器的入口端，制冷剂经冷藏毛细管降压后进入冷藏蒸发器，所述冷藏蒸发器对冷藏室内部进行制冷，由所述冷藏蒸发器出口端流出的制冷剂进入所述冷冻蒸发器，并从所述冷冻蒸发器出口端回流至所述压缩机。
  8. 根据权利要求7所述冰箱的运行方法，其特征在于，所述冰箱制冷系统还包括温度传感器，所述温度传感器用于监测由所述冷藏蒸发器出口端流出的制冷剂温度T；所述冷藏室内部制冷时，所述第一三通阀连通所述冷藏毛细管入口端，若制冷剂温度T温度高于冷冻室内部温度，冰箱按快速制冷步骤制冷，若制冷剂温度T温度不高于冷冻室内部温度，冰箱按普通制冷步骤制冷。
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CN104879941A (zh) * 2015-06-01 2015-09-02 合肥美的电冰箱有限公司 冰箱制冷循环系统、防凝露控制方法及冰箱
CN106123450A (zh) * 2016-06-23 2016-11-16 青岛海尔股份有限公司 冰箱的制冷控制方法与冰箱
CN106679215A (zh) * 2016-12-28 2017-05-17 青岛海尔股份有限公司 冰箱节能制冷系统、具有该系统的冰箱及其运行方法

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CN110579030A (zh) * 2019-09-27 2019-12-17 长虹美菱股份有限公司 一种冰箱的制冷系统及控制方法
CN110579030B (zh) * 2019-09-27 2023-08-08 长虹美菱股份有限公司 一种冰箱的制冷系统及控制方法
CN111288682A (zh) * 2020-03-12 2020-06-16 广东省特种设备检测研究院珠海检测院 制冷与冷热回收综合系统及制冷与冷热回收综合利用方法
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