WO2015006973A1 - 一种利用迫近参数的冰箱温度控制方法 - Google Patents

一种利用迫近参数的冰箱温度控制方法 Download PDF

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WO2015006973A1
WO2015006973A1 PCT/CN2013/079687 CN2013079687W WO2015006973A1 WO 2015006973 A1 WO2015006973 A1 WO 2015006973A1 CN 2013079687 W CN2013079687 W CN 2013079687W WO 2015006973 A1 WO2015006973 A1 WO 2015006973A1
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temperature
refrigerator
rotating speed
refrigerating
compressor
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PCT/CN2013/079687
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English (en)
French (fr)
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孔冬
潘坚
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海信容声(广东)冰箱有限公司
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Priority to PCT/CN2013/079687 priority Critical patent/WO2015006973A1/zh
Publication of WO2015006973A1 publication Critical patent/WO2015006973A1/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
    • F25D29/00—Arrangement or mounting of control or safety 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
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters
    • 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
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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 relates to a refrigerator temperature control method using an impending parameter, and the method of the invention can also be applied to a freezer, a wine cabinet, an ice maker and a refrigerator.
  • Previous refrigerator temperature control was based on a deterministic control strategy, which is achieved by direct comparison of pick-up temperature to set temperature.
  • the existing refrigerator temperature control such as the Chinese patent, the application number is 201210413861.3, the name is the control method of the refrigerator and the refrigerator, Including the following steps: collection The current ambient temperature of the environment in which the refrigerator is located; determining whether the first temperature interval in which the current ambient temperature is located is the same temperature interval as the second temperature interval in which the ambient temperature was last collected; if the temperature difference is less than or equal to the Maintaining a working temperature of the refrigerator while maintaining a predetermined temperature; if the temperature difference is greater than the predetermined temperature, changing an operating mode of the refrigerator to an operating mode corresponding to the first temperature interval, wherein, in different working modes The temperature at the starting point of the refrigerator and the temperature at the shutdown point are different.
  • the invention avoids the constant switching of the temperature of the opening and stopping point of the refrigerator when the ring temperature continuously fluctuates around the critical point of the two temperature intervals, thereby realizing accurate and stable control of the temperature of the refrigerator.
  • This The patents mainly adopt different control strategies according to the ambient temperature.
  • the working condition of the refrigerating compartment is divided into three or more open and close temperature ranges, and each open and stop temperature range corresponds to a working gear position;
  • B. sampling the temperature of the indoor temperature in the refrigerator, and transmitting the sampling temperature to the main control chip of the refrigerator;
  • the current compressor and solenoid valve are controlled on and off.
  • the temperature of the refrigerator compartment is directly controlled by using a certain temperature point inside the refrigerator compartment, the actual temperature inside the refrigerator compartment can be more accurately reflected, that is, the actual control effect on the refrigerator, so that the stored food has longer storage. time.
  • the temperature range near the sensor is small (0 °C - 10 °C), which is beneficial to the selection of the sensor. This patent divides the compartment temperature into three intervals and uses different coping strategies.
  • the control method includes: the first step, Comparing the detection temperature of the freezer compartment with the upper limit set temperature of the freezer compartment and the lower limit set temperature of the freezer compartment, and starting/closing the compressor and the circulation fan, The detection temperature of the freezer compartment reaches a range between the upper limit set temperature and the lower limit set temperature of the freezer compartment; the second step, after the first step, Comparing the detection temperature of the refrigerating compartment with the upper limit setting temperature of the refrigerating compartment and the lower limit setting temperature of the refrigerating compartment, and starting/closing the regulating damper and the circulation fan, Having the detected temperature of the refrigerating compartment reach a range between the upper limit set temperature and the lower limit set temperature of the refrigerating compartment; and a third step, if the compressor and the circulating fan are started in the first step and the damper is closed in the second step, Then, the cool air is discharged to at least one of the
  • the above-mentioned refrigerator control system mainly adopts a deterministic control method, that is, whether an indicator (for example, temperature, humidity, time, etc.) reaches a set value, or a different identification interval is divided into related indicators, and then the next step is started.
  • Workflow for example, switching compressors, fans, defrosting, etc.
  • the deterministic judgment method can directly describe the difference between the pick-up temperature and the set temperature, it cannot describe the imminent degree of the pick-up temperature and the set temperature (for example, the pick-up temperature differs from the set temperature, 1 o C, 3 o C , 5 o C and other specific differences).
  • the corresponding strategy can be adopted to improve the accurate control of the compartment temperature, and the adaptive temperature control is realized, thereby improving the refrigeration capacity of the refrigerator and reducing the energy consumption. purpose.
  • the technical problem to be solved by the present invention is to provide a refrigerator temperature control method using an impending parameter, It is easy to implement temperature control program and meet the requirements of precise temperature control. It can also adaptive temperature control for products with different ambient temperature or climate types.
  • a refrigerator temperature control method using an impending parameter which comprises the following steps:
  • control strategy B is adopted: the cooling state is stopped at the same time as the refrigerating fan is operated;
  • control strategy C Adjust the compressor speed to 60% of the maximum compressor speed and continue to run the refrigerating fan speed;
  • control strategy D Adjust the compressor speed to 80% of the maximum compressor speed and continue to run the refrigerating fan speed;
  • control strategy E the compressor speed is adjusted to 100% of the maximum compressor speed, and the refrigerating fan speed is continuously operated.
  • the invention calculates the imminent function of the picking temperature, describes the approaching degree of the picking temperature and the set temperature, and adopts different coping strategies, can improve the precise control of the compartment temperature, achieve adaptive temperature control, and improve the refrigeration of the refrigerator. Capabilities, while reducing energy consumption, and adaptive temperature control for products of different ambient temperatures or climate types.
  • FIG. 1 is a schematic block diagram of a refrigerator temperature control system using an impending parameter according to the present invention
  • Figure 2 is a graph of the approximation function of the pickup temperature T1 and the set temperature T;
  • FIG. 3 is a flow chart of a method for controlling temperature of a refrigerator using an impending parameter according to the present invention.
  • the needle of the present invention is realized only for the temperature control of the single compartment of the refrigerator and the number of temperature sensors is one, as an example. By using the design idea of this patent, it can be utilized in the working condition of multiple compartments of a refrigerator and multiple temperature sensors.
  • Figure 2 shows the curve of the impending function R when the cold room is set to a temperature of 5 o C. As can be seen from Figure 2, the closer T1 is to T, the closer R is to 1, and the more T deviates from T, the more R tends to zero. . Therefore, the impending function R can well describe the imminent degree of the pickup temperature T1 and the set temperature T, and use this as a basis for adopting different control strategies.
  • the value can be divided into different intervals, such as 0.8 ⁇ R ⁇ 1, 0.6 ⁇ R ⁇ 0.8, 0.4 ⁇ R ⁇ 0.6, 0 ⁇ R ⁇ 0.4, different control strategies can be set.
  • the specific control process is shown in Figure 3:
  • control strategy A (stop cooling state and stop the refrigerating fan);
  • the control strategy B is adopted (this interval shows that the pickup temperature T1 and the set temperature T are close to each other, so the same control strategy as A is adopted, that is, the cooling state is stopped at the same time and the refrigerating fan is operated);
  • the control strategy C is adopted (for the degree of deviation, the compressor speed is adjusted to be 60% of the maximum compressor speed, and the refrigerating fan speed is continuously operated);
  • control strategy E is adopted. (This condition determines that the pickup temperature deviates significantly from the set temperature, and the compressor is adjusted. The speed is 100% of the maximum compressor speed and continues to operate at the refrigerating fan speed).
  • the temperature of the refrigerator T1 picking up temperature T1 will gradually reach the set temperature T Close and will maintain good accuracy and stability at set temperature attachments.
  • the patent can also be applied to the deterministic control method by referring to the calculated parameters.
  • the judgment parameter R in the present invention describes the approaching temperature of the pick-up temperature and the set temperature, such as 1 represents the same as the set temperature, and 0 represents the infinity (ideal state) from the set temperature, and the closer to 1, the more the setting and the setting The temperature is close.
  • Different intervals can be set for R.
  • Different control strategies can be adopted according to the degree of imminence with the set temperature; the description method of the proximity degree of the relevant parameters of the present invention can be used in the working conditions of multiple chambers and multiple temperature sensors.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

一种利用迫近参数的冰箱温度控制方法，包括以下步骤：S1：通过人机交互界面设定温度T；S2：拾取冷藏室当前温度T1；对拾取温度T1与设定温度T进行逻辑比较：如果T1≤T，则停止制冷状态，并停止冷藏风扇；如果Τ1＞Τ，则进行到S4；S4：计算描述迫近程度的参数R：如果0.8≤R＜1，则停止制冷状态与冷藏风扇运行；如果0.6≤R＜0.8，则调整压缩机转速为最大压缩机转速的60%，并持续运行冷藏风扇转速；如果0.4≤R＜0.6，则调整压缩机转速为最大压缩机转速的80%，并持续运行冷藏风扇转速；如果0≤R＜0.4，则调整压缩机转速为最大压缩机转速的100%，并持续运行冷藏风扇转速。

Description

一种利用迫近参数的冰箱温度控制方法
技术领域
本发明涉及一种利用迫近参数的冰箱温度控制方法，本发明方法还可应用于冰柜、酒柜、制冰机、冷藏箱 。
背景技术
随着生活水平的提高，冰箱已经成为了居家生活的必需品，人们对冰箱各间室精确控制温度的要求也越来越高。以往的冰箱温度控制都是基于确定性的控制策略，即是通过拾取温度与设定温度的直接比较来实现的。
现有的冰箱温度控制，如中国专利，申请号为 201210413861.3 ，名称为 冰箱的控制方法及冰箱， 包括如下步骤：采集 冰箱所处的环境的当前环境温度；判断所述当前环境温度所在的第一温度区间是否与上一次采集的环境温度所在的第二温度区间为同一温度区间；如果所述温差小于或等于所述预定温度，则保持所述冰箱的工作模式不变；如果所述温差大于所述预定温度，则改变所述冰箱的工作模式为第一温度区间对应的工作模式，其中，在不同的工作模式中，冰箱制冷的开机点温度和停机点温度不同。本发明避免当环温不停地在两个温度区间临界点左右波动时冰箱的开停机点温度的不停转换，从而实现对冰箱的温度的精确、稳定控制。此 专利主要是根据环境温度，而采取不同的控制策略。
又如申请号为03126145.0，名称为冰箱温度的控制方法，其按以下步骤进行:A.将冷藏室工作状态划分为三个或三个以上的开停机温度范围,每个开停机温度范围对应于一个工作档位;B.对冷藏室内环境温度取样,将该取样温度传送给冰箱主控芯片;C.冰箱主控芯片通过读取取样温度,根据实际设定的档位对应的开停机温度对当前压缩机和电磁阀进行通断控制。由于直接使用冷藏室箱体内部某个温度点来控制冷藏室是否制冷,能更准确地反映冷藏室箱体内部的实际温度,即对冰箱的实际控制效果,使贮存的食品具有更长的存储时间。另外,使用冷藏室箱体内部某个温度点来控制冷藏室是否制冷,传感器附近的温度变化范围小(0℃-10℃),有利于传感器的选择。此专利将间室温度分为三个区间，并采用不同的应对策略。
再如申请号为 200310118305.4 ，名称为冰箱的温度控制方法，控制方法包含 : 第一步骤 , 将冷冻室的检测温度与冷冻室上限设定温度和冷冻室下限设定温度进行比较 , 并使压缩机和循环风扇起动 / 关闭 , 使得冷冻室的检测温度到达冷冻室上限设定温度和下限设定温度之间的范围 ; 第二步骤 , 在第一步骤之后 , 将冷藏室的检测温度与冷藏室上限设定温度和冷藏室下限设定温度进行比较 , 并使调节风门和循环风扇起动 / 关闭 , 使得冷藏室的检测温度到达冷藏室上限设定温度和下限设定温度之间的范围 ; 以及第三步骤 , 如果在第一步骤中压缩机和循环风扇起动、在第二步骤中调节风门密闭 , 则使冷气排放到冷藏室的多个冷藏空间中的至少一个空间。此专利主要是比较拾取温度与设定温度的上下限。
上述冰箱控制系统采用的主要是确定性的控制方法，即判断某项指标（例如，温度、湿度、时间等）是否达到设定值，或者是对相关指标划分不同的识别区间，然后启动下一步的工作流程（例如，开关压缩机、风机、化霜等）。而确定性的判断方法虽然可以直接描述拾取温度与设定温度的差异，但不能描述出拾取温度与设定温度的迫近程度（如，拾取温度与设定温度相差，1oC、3oC、5oC等具体差异）。而在冰箱制冷系统温度控制中，根据拾取温度与设定温度的迫近程度采用相应策略，可以提高间室温度精确控制，做到自适应温度控制，起到提升冰箱制冷能力、同时降低能耗的目的。
发明内容
本发明所要解决的技术问题是，提供一种 利用迫近参数的冰箱温度控制方法，其 便于温度控制程序实现及满足精确控制温度的要求，并可对不同环境温度或气候类型的产品进行自适应的温度控制 。
为解决上述技术问题，本发明采用的技术方案是： 一种利用迫近参数的冰箱温度控制方法，其包括以下步骤：
S1 ：通过人机交互界面设定温度 T ；
S2 ：拾取冷藏室当前温度 T1 ；
S3 ：对拾取温度 T1 与设定温度 T 进行逻辑比较：
如果 T 1 ≤ T ，则采用控制策略 A： 停止制冷状态 ，并停止冷藏风扇 ；
如果 T1>T ，则进行到 S4 ；
S4 ：计算描述迫近程度的参数 R：
如果 0.8 ≤ R<1 ，则采用控制策略B：同时停止制冷状态与冷藏风扇运行 ；
如果 0.6 ≤ R<0.8 ，则采用控制策略C： 调整压缩机转速为最大压缩机转速的60%，并持续运行冷藏风扇转速；
如果 0.4 ≤ R<0.6 ，则采用控制策略D： 调整压缩机转速为最大压缩机转速的80%，并持续运行冷藏风扇转速；
如果0 ≤ R<0.4，则采用控制策略E：调整压缩机转速为最大压缩机转速的100%，并持续运行冷藏风扇转速。
设定温度T为5oC 。
与现有技术相比，本发明的有益效果是：
本发明通过对拾取温度计算迫近函数，用来描述拾取温度与设定温度的迫近程度，来采取不同的应对策略，可以提高间室温度精确控制，做到自适应温度控制，起到提升冰箱制冷能力、同时降低能耗的目的，并可对不同环境温度或气候类型的产品进行自适应的温度控制。
附图说明
图 1 为本发明利用迫近参数的冰箱温度控制系统的原理框图；
图 2 为拾取温度T1和设定温度T的迫近函数曲线图；
图3为本发明利用迫近参数的冰箱温度控制方法流程图。
具体实施方式
下面结合具体实施例对本发明作进一步的说明。
本发明针仅针对冰箱单间室温度控制、且温度传感器数目为1个的工况来实现，以此作为实例。利用本专利的设计思想，可利用于冰箱多间室、多温度传感器的工况。根据拾取温度T1和设定温度T，可以计算出T1与T的迫近函数，R=exp(-abs(T1-T)/T)。图2显示了当冷藏室设定温度为5oC时的迫近函数R的曲线，从图2可以看出，T1越接近T，R越接近于1，T越偏离T，R越趋向于0。因此，迫近函数R可以很好的描述拾取温度T1与设定温度T的迫近程度，并以此作为采取不同控制策略的依据。
根据描述迫近程度的参数 R 的数值，可以划分为不同的区间，如0.8≤R<1，0.6≤R<0.8，0.4≤R<0.6，0 ≤R<0.4，可以设定不同的控制策略。针对单间室、单温度传感器的实例，具体控制流程如图3所示：
S1 ：通过人机交互界面设定温度T；
S2 ：拾取冷藏室当前温度T1；
S3 ：对拾取温度 T1 与设定温度T进行逻辑比较：
如果 T1 ≤ T ，则采用控制策略A（停止制冷状态，并停止冷藏风扇）；
如果 T1>T ，则进行到 S4 ；
S4 ：计算描述迫近程度的参数R ：
如果0.8 ≤ R<1，则采用控制策略B（本区间体现拾取温度T1与设定温度T迫近程度良好，故采用与A相同的控制策略，即同时停止制冷状态与冷藏风扇运行 ）；
如果0.6 ≤ R<0.8，则采用控制策略C（针对偏离程度，调整压缩机转速为最大压缩机转速的60%，并持续运行 冷藏风扇转速）；
如果0.4 ≤ R<0.6 ，则采用控制策略 D（针对偏离程度，调整压缩机转速为最大压缩机转速的80%，并持续运行 冷藏风扇转速）；
如果0 ≤ R<0.4 ，则采用控制策略 E（此种工况判断为拾取温度与设定温度偏离较大，调整压缩机 转速为最大压缩机转速的100%，并持续运行 冷藏风扇转速） 。
经过多个流程的循环，冰箱冷藏室拾取温度T1温度会逐渐向设定温度 T 接近，并会在设定温度附件保持良好的精确度和稳定性。
在本实例中，由于引入了迫近参数可以描述冰箱冷藏室拾取温度控制与设定温度的迫近程度，因此，本专利也可以借鉴计算出的参数应用于确定性的控制方式中。
本发明中的判断参数R，描述了拾取温度与设定温度的迫近程度，如1代表与设定温度相同，0代表与设定温度相距无限远（理想状态），越接近1越表明与设定温度相近。可以为R设定不同区间，根据与设定温度的迫近程度，可以采取不同的控制策略；本发明相关参数迫近程度的描述方法，可以用在多间室、多温度传感器的工况。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (2)

  1. 一种利用迫近参数的冰箱温度控制方法，其特征在于，包括以下步骤：
    S1 ：通过人机交互界面设定温度 T ；
    S2 ：拾取冷藏室当前温度 T1 ；
    S3 ：对拾取温度 T1 与设定温度 T 进行逻辑比较：
    如果 T 1 ≤ T ，则采用控制策略 A ： 停止制冷状态，并停止冷藏风扇 ；
    如果 T1>T ，则进行到 S4 ；
    S4 ：计算描述迫近程度的参数R ：
    如果 0.8 ≤ R<1，则采用控制策略B ：同时停止制冷状态与冷藏风扇运行 ；
    如果 0.6 ≤ R<0.8 ，则采用控制策略C ： 调整压缩机转速为最大压缩机转速的60%，并持续运行冷藏风扇转速；
    如果 0.4 ≤ R<0.6 ，则采用控制策略D ： 调整压缩机转速为最大压缩机转速的80%，并持续运行冷藏风扇转速；
    如果0 ≤ R<0.4，则采用控制策略E：调整压缩机转速为最大压缩机转速的100%，并持续运行冷藏风扇转速。
  2. 根据权利要求1所述的利用迫近参数的冰箱温度控制方法，其特征在于，设定温度T为5oC。
PCT/CN2013/079687 2013-07-19 2013-07-19 一种利用迫近参数的冰箱温度控制方法 WO2015006973A1 (zh)

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