阅读说明：本技术 一种减少冷藏室出风口结冰风险的控制方法 (Control method for reducing freezing risk of air outlet of refrigerating chamber ) 是由 闵龙 张伟 肖祥顺 罗金兆 种衍习 文坚 吴启楠 于 2019-10-30 设计创作，主要内容包括：本发明减少冷藏室出风口结冰风险的控制方法,步骤如下：冰箱运行；间室内温度稳定,24小时内没有开关门动作；在1至3小时内收集信息1：冷藏风门开启到关闭的平均时间Travg：记录多次冷藏风门开启到关闭的时间Tr,计算平均值；在一定时间T1内收集信息2：压缩机开机至停机的平均时间Tyavg：记录多次压缩机开启到关闭的时间Ty,计算平均值；在3小时内减小冷藏风门的开启角度5至10°；在T2内收集Travg和Tyavg,并计算Travg和Tyavg的差值,如果差值在20％以内,则Cr执行当前角度,否则在下一个3小时内继续减少冷藏风门的开启角度Cr,在T3运行结束后继续计算Travg和Tyavg的差值,是否满足B％以内,以此类推,最终实现Travg和Tyavg的差值在20％以内。(The invention discloses a control method for reducing the risk of icing at an air outlet of a refrigerating chamber, which comprises the following steps of: operating the refrigerator; the temperature in the chamber is stable, and the door is not opened or closed within 24 hours; information was collected over 1 to 3 hours 1: average time Travg of opening to closing of the refrigerating damper: recording the time Tr from opening to closing of the refrigerating air door for many times, and calculating an average value; information 2 is collected for a certain time T1: average time Tyavg from start-up to shutdown of the compressor: recording the time Ty from the starting to the closing of the compressor for many times, and calculating an average value; reducing the opening angle of the refrigerating air door by 5-10 degrees within 3 hours; collecting Travg and Tyavg in T2, calculating the difference between Travg and Tyavg, if the difference is within 20%, Cr executes the current angle, otherwise, continuously reducing the opening angle Cr of the refrigeration damper in the next 3 hours, continuously calculating the difference between Travg and Tyavg after the T3 operation is finished, and whether the difference meets B% or not, and so on, finally realizing that the difference between Travg and Tyavg is within 20%.)

1. A control method for reducing the risk of icing at the air outlet of a refrigerating chamber is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: operating the refrigerator;

step two: the temperature in the chamber is stable, and the door is not opened or closed within 24 hours;

step three: information was collected over 1 to 3 hours 1: average time Travg of opening to closing of the refrigerating damper: recording the time Tr from opening to closing of the refrigerating air door for many times, and calculating an average value;

step four: information 2 was collected over 1 to 3 hours: average time Tyavg from start-up to shutdown of the compressor: recording the time Ty from the starting to the closing of the compressor for many times, and calculating an average value;

step five: reducing the opening angle Cr of the refrigerating air door within 3 hours, wherein the reducing angle is A, and the value of A is 5-10;

step six: collecting Travg and Tyavg in T2, calculating the difference between Travg and Tyavg, if the difference is within 20%, executing the current angle by Cr, otherwise, continuously reducing the opening angle Cr of the refrigerating air door in the next 3 hours, continuously calculating the difference between Travg and Tyavg after the operation of T3 is finished, and judging whether the difference meets B% or not, and so on, finally realizing that the difference between Travg and Tyavg is within B%;

step seven: and (3) executing the opening angle of the air door by taking the finally determined opening angle Cr of the door after the system is stabilized as a fixed value, continuously collecting Travg and Tyavg for 3 hours, calculating a difference value, exiting the program when the difference value between the Travg and the Tyavg is beyond 20 percent, and recovering the normal working state of the air door.

The technical field is as follows:

the invention relates to a control method for reducing the risk of icing at an air outlet of a refrigerating chamber, and belongs to the technical field of refrigerators.

Background art:

when the air-cooled refrigerator is used, the temperature of some chambers without evaporators is controlled by using a damper and a fan, and when the refrigeration is required, the compressor, the damper and the fan are opened to realize the temperature reduction in the chambers. When no refrigeration is needed, the air door is closed, and the temperature in the compartment is gradually increased by using the external temperature. However, in general, the opening angle of the air door is about 100 degrees and is the maximum opening angle, and the air door amount is the maximum at the moment, so that the air speed of the air outlet of the corresponding compartment is high, the air volume is large, and when the compartment has a refrigeration function, the temperature in the local space of the air outlet of the compartment is easily below the freezing point, so that fruits and vegetables are damaged. And due to high air volume and high air speed, the cooling speed of the chamber is too high, the refrigeration requirement can be quickly met, and the system requires the air door to execute the closing action. This rapid implementation and cessation of the refrigeration demand results in frequent compressor and damper activity over a long period of time, which affects the useful life of the compressor and damper.

Therefore, there is a need to improve the prior art to overcome the deficiencies of the prior art.

The invention content is as follows:

the invention provides a control method for reducing the icing risk of the air outlet of the refrigerating chamber in order to solve the problems in the prior art, and the characteristic of a stepping motor in an air door is utilized to realize the free control of the air door from 0 degree to the maximum opening angle.

The technical scheme adopted by the invention is as follows: a control method for reducing the risk of icing at the air outlet of a refrigerating chamber is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: operating the refrigerator;

step two: the temperature in the chamber is stable, and the door is not opened or closed within 24 hours;

step three: information was collected over 1 to 3 hours 1: average time Travg of opening to closing of the refrigerating damper: recording the time Tr from opening to closing of the refrigerating air door for many times, and calculating an average value;

step four: information 2 was collected over 1 to 3 hours: average time Tyavg from start-up to shutdown of the compressor: recording the time Ty from the starting to the closing of the compressor for many times, and calculating an average value;

step five: reducing the opening angle Cr of the refrigerating air door within 3 hours, wherein the reducing angle is A, and the value of A is 5-10;

step six: collecting Travg and Tyavg in T2, calculating the difference between Travg and Tyavg, if the difference is within 20%, executing the current angle by Cr, otherwise, continuously reducing the opening angle Cr of the refrigerating air door in the next 3 hours, continuously calculating the difference between Travg and Tyavg after the operation of T3 is finished, and judging whether the difference meets B% or not, and so on, finally realizing that the difference between Travg and Tyavg is within B%;

step seven: and (3) executing the opening angle of the air door by taking the finally determined opening angle Cr of the door after the system is stabilized as a fixed value, continuously collecting Travg and Tyavg for 3 hours, calculating a difference value, exiting the program when the difference value between the Travg and the Tyavg is beyond 20 percent, and recovering the normal working state of the air door.

The invention has the following beneficial effects: the control method for reducing the risk of icing at the air outlet of the refrigerating chamber has the advantages that the temperature in the refrigerating chamber with less refrigerating capacity is more uniform, the time of the refrigerating period is prolonged, and the refrigerating period of the refrigerating chamber is consistent with that of the refrigerating chamber. The energy is saved, the working times of parts are reduced, and the service life of the product is prolonged.

Description of the drawings:

FIG. 1 is a flow chart of a control method for reducing the risk of icing at the air outlet of the refrigerating chamber according to the present invention.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings.

The invention discloses a control method for reducing the risk of icing at an air outlet of a refrigerating chamber, which comprises the following steps of:

a control method for reducing the risk of icing at the air outlet of a refrigerating chamber is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: operating the refrigerator;

step two: the temperature in the chamber is stable, and the door is not opened or closed within 24 hours;

step three: information was collected over 1 to 3 hours 1: average time Travg of opening to closing of the refrigerating damper: recording the time Tr from opening to closing of the refrigerating air door for many times, and calculating an average value;

step four: information 2 was collected over 1 to 3 hours: average time Tyavg from start-up to shutdown of the compressor: recording the time Ty from the starting to the closing of the compressor for many times, and calculating an average value;

step five: reducing the opening angle Cr of the refrigerating air door within 3 hours, wherein the reducing angle is A, and the value of A is 5-10;

step six: collecting Travg and Tyavg in T2, calculating the difference between Travg and Tyavg, if the difference is within 20%, executing the current angle by Cr, otherwise, continuously reducing the opening angle Cr of the refrigerating air door in the next 3 hours, continuously calculating the difference between Travg and Tyavg after the operation of T3 is finished, and judging whether the difference meets B% or not, and so on, finally realizing that the difference between Travg and Tyavg is within B%;

step seven: and (3) executing the opening angle of the air door by taking the finally determined opening angle Cr of the door after the system is stabilized as a fixed value, continuously collecting Travg and Tyavg for 3 hours, calculating a difference value, exiting the program when the difference value between the Travg and the Tyavg is beyond 20 percent, and recovering the normal working state of the air door.

The steps are as follows:

tr: the time from the opening of the refrigeration air door to the closing of the refrigeration air door;

travg: the average time from the opening of the refrigeration air door to the closing of the refrigeration air door;

ty: the time the compressor is turned on to off;

travg: average time from compressor on to off;

cr: the opening angle of the refrigerating air door.

The control method for reducing the risk of icing at the air outlet of the refrigerating chamber has the advantages that the temperature in the refrigerating chamber with less refrigerating capacity is more uniform, the time of the refrigerating period is prolonged, and the refrigerating period of the refrigerating chamber is consistent with that of the refrigerating chamber. The energy is saved, the working times of parts are reduced, and the service life of the product is prolonged.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.