A fault protection control method of a refrigerator

Abstract

The application discloses a fault protection control method of a refrigerator, which comprises the following steps: collecting working parameters in different states by an electric control device; in the first state, collecting the compressor working time T1 and the compressor stop time K1 during the refrigeration corresponding to the current temperature position; if the refrigerator door switch is opened during the refrigeration, collecting the door opening time t1 before the sensor is damaged, the door opening time t after the sensor is damaged, and the compressor working time T2; in the second state, collecting the compressor working time T3 and the compressor stop time K3 during the refrigeration after the temperature position is changed, collecting the temperature values W1 and W2 corresponding to the temperature positions before and after the change, and collecting the changed temperature position S3; and calculating the compressor working time T6 and the compressor stop time K6 by using a formula. The application has the advantages of accurate control of the refrigerator refrigeration and prevention of poor refrigerator refrigeration effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, in particular to a fault protection control method of a refrigerator. BACKGROUND

[0002] With the increasing demand for multifunctional refrigerators, the number of electronic components used in refrigerators is increasing. However, the use of electronic components increases the failure rate of refrigerators. In order to ensure normal refrigeration of the refrigerator, different protection controls need to be proposed according to different faults. In particular, when the temperature sensor that affects the refrigeration effect fails, it is easy to cause the refrigerator not to refrigerate. The current fault protection method is to start and stop the compressor at a fixed time when the temperature sensor fails to ensure basic refrigeration, which is a passive control method. However, this control method cannot ensure that the temperature basically reaches the set temperature at different gears, and can only ensure that the refrigerator refrigerates. At the same time, when the refrigerator door is opened and a large amount of food is put into the refrigerator, the temperature in the refrigerator may become higher according to the fixed time control, which may cause the food to deteriorate. Patent No. CN109307399A discloses a refrigerator refrigeration capacity control method, device and refrigerator. Specifically, it is disclosed that the start-up time and stop time of the compressor during a running cycle (refrigeration period) of the compressor in the refrigerator are determined to calculate the start-up rate, and the start-up rate is compared with the predetermined start-up rate to increase or decrease the start-up and stop time of the compressor. However, the influence of the refrigerator door opening time on the refrigerator refrigeration time during the refrigeration period and the influence of the different gear adjustments on the refrigerator refrigeration time are ignored, which cannot accurately control the refrigerator refrigeration time and cannot achieve a refrigerator that is closer to the real refrigeration effect, which may cause the refrigerator not to refrigerate or the refrigeration effect to be poor or strong when the temperature sensor of the refrigerator fails. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the existing defects and provide a fault protection control method of a refrigerator, which can accurately control the refrigerator refrigeration according to the start-up and stop time before the fault occurs, the influence of the refrigerator door opening time on the refrigerator refrigeration time, and the influence of the different gear adjustments on the refrigerator refrigeration time, so that the refrigerator is closer to the real refrigeration effect, and prevents the refrigerator from not refrigerating or the refrigeration effect from being poor or strong when the temperature sensor of the refrigerator fails, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the present application provides the following technical scheme: a fault protection control method of a refrigerator, which comprises collecting the following working parameters of different states by an electric control device in the refrigerator:

[0005] The first state: the temperature of the refrigerator does not change, and the compressor working time T1 and the compressor downtime K1 during the refrigeration corresponding to the current gear are collected; the refrigerator door switch is opened within a refrigeration period, and the opening time t1 before the sensor is damaged, the opening time t after the sensor is damaged, and the compressor working time T2 are collected;

[0006] The second state: after the temperature of the refrigerator changes, the compressor working time T3 and the compressor downtime K3 during a refrigeration period after the change of the gear are collected, and the gear before the change is S1 and the gear after the change is S2; the temperature value W1 corresponding to the gear S1 before the change and the temperature value W2 corresponding to the gear S2 after the change are collected; and the changed gear value S3 is collected;

[0007] The electric control device collects the working parameters of the above two states in cycles, and when the working parameters of a cycle are collected, the working parameters of the next cycle are collected, and if the working parameters of the next cycle are collected, the working parameters of the previous cycle are no longer remembered; at this time, when the temperature sensor is damaged, the following formula is used to calculate the compressor working time T6 and the compressor downtime K6 in the cycle refrigeration;

[0008] Formula one: control calculation of the compressor working time T6

[0009] T6=1 / t1*t*(T2—T1)+|T3—T1| / (W2—W1)*s3+T1

[0010] Formula two: control of the compressor downtime K6

[0011] K6=K1—|K3—K1| / (W2—W1)*s3

[0012] Further, if the temperature sensor is damaged when the working parameters of the next cycle are not collected in the second state, the working parameters of the first state of the cycle are used for fault protection control calculation, and then the compressor is started and stopped according to the calculation result;

[0013] If the temperature sensor is damaged when the working parameters of the next cycle are not collected in the above two states, the compressor is started and stopped according to the last normal refrigeration time T4 and the downtime K4;

[0014] If the temperature sensor is damaged when there is no normal refrigeration state, the compressor is started and stopped according to the fixed refrigeration time T5 and the downtime K5 built in the electric control device.

[0015] Further, when the temperature sensor is damaged, the door is opened or the temperature is adjusted while the compressor is working, the electric control device collects the refrigeration time T7, and then calculates according to the calculation results T6 and K6, continues to refrigerate for T6-T7, and then starts the K6 and T6 cycle refrigeration.

[0016] When the temperature sensor is damaged, the door is opened or the temperature is adjusted while the compressor is stopped, the electric control device collects the stop time K8, and then calculates according to the calculation results T6 and K6, continues to stop for K6-K8, and then starts the K6 and T6 cycle refrigeration.

[0017] Further, the value of T5 is 20 min, and the value of K5 is 15 min.

[0018] Compared with the prior art, the beneficial effects of the present application are: the fault protection control method of the refrigerator adjusts the refrigerator refrigeration after the temperature sensor fails, according to the influence of the opening and stopping time before the failure, the refrigerator door opening time on the refrigerator refrigeration time, and the influence of the different gear adjustments on the refrigerator refrigeration time, and comprehensively considers the above information to more accurately control the refrigerator refrigeration after the temperature sensor fails, so that the refrigerator can be closer to the real refrigeration effect. The refrigerator is a long-term open household appliance, and the fault protection control method of the refrigerator of the present application prevents the problems of no refrigeration, poor refrigeration effect or strong refrigeration effect when the temperature sensor of the refrigerator fails. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. EMBODIMENT

[0020] The present application provides a technical solution: a fault protection control method of a refrigerator, which comprises collecting the following working parameters of different states by an electric control device in the refrigerator:

[0021] The first state: the temperature of the refrigerator does not change, and the compressor working time T1 and the compressor stopping time K1 during refrigeration corresponding to the current gear are collected; when the refrigerator door is opened, the opening time t1 before the sensor is damaged, the opening time t after the sensor is damaged, and the compressor working time T2 are collected during a refrigeration period.

[0022] The second state: after the temperature grade of the refrigerator changes, the compressor working time T3 and the compressor stop time K3 during a refrigeration period after the grade changes are collected, and the grade before the change is S1 and the grade after the change is S2; the temperature value W1 corresponding to the grade S1 before the change and the temperature value W2 corresponding to the grade S2 after the change are collected; and the changed grade value S3 is collected;

[0023] The electric control device collects the working parameters of the above two states according to a cycle, and when the working parameter collection of a cycle is completed, the working parameter collection of the next cycle is continued, and if the working parameter collection of the next cycle is completed, the working parameter of the previous cycle is no longer memorized; at this time, when the temperature sensor is damaged, the following formula is used to calculate the compressor working time T6 and the compressor stop time K6 for fault protection control;

[0024] Formula one: control calculation of the compressor working time T6

[0025] T6 = 1 / t1*t*(T2-T1) + |T3-T1| / (W2-W1)*s3 + T1

[0026] Formula two: control calculation of the compressor stop time K6

[0027] K6 = K1 - |K3-K1| / (W2-W1)*s3

[0028] Wherein 1 / t1*t*(T2-T1) represents the increased working time of the compressor during the next refrigeration period after the refrigerator door is opened; if the refrigerator door is not opened during a refrigeration period, T2 is equal to T1;

[0029] Wherein |T3-T1| / (W2-W1)*s3 represents the increased or decreased working time of the compressor during the next refrigeration period after the refrigerator grade changes; if the temperature grade of the refrigerator does not change during two continuous refrigeration periods, |T3-T1| / (W2-W1)*s3 is zero;

[0030] Wherein |K3-K1| / (W2-W1)*s3 represents the increased or decreased stop time of the compressor during the next refrigeration period after the refrigerator grade changes; if the temperature grade of the refrigerator does not change during two continuous refrigeration periods, |K3-K1| / (W2-W1)*s3 is zero;

[0031] When the temperature sensor is damaged, the door is opened or the grade is changed during the working of the compressor, the electric control device collects the refrigeration time T7 this time, and then calculates according to the calculation results T6 and K6, continues to refrigerate for T6-T7 time, and then starts K6 and T6 to cycle refrigeration;

[0032] When the temperature sensor is damaged, the door is opened or the gear is adjusted when the compressor is stopped, the electric control device collects the time K8 of this time when the compressor is stopped, then calculates according to the calculation result T6 and K6, continues to stop for K6-K8 time, and then starts K6 and T6 to perform the cycle refrigeration.

[0033] If the temperature sensor is damaged when the working parameters of the next cycle are not collected from the working parameters of the second state, the working parameters of the first state cycle of the cycle are used for fault protection control calculation, and then the compressor is started and stopped according to the calculation result;

[0034] If the temperature sensor is damaged when the working parameters of the next cycle are not collected from the working parameters of the above two states, the compressor is started and stopped according to the last normal refrigeration time T4 and the stop time K4;

[0035] If the temperature sensor is damaged without a normal refrigeration state, the compressor is started and stopped according to the fixed refrigeration time T5 and the stop time K5 built in the electric control device, the value of T5 is 20 min, and the value of K5 is 15 min.

[0036] The fault protection control method of the refrigerator disclosed in the embodiment can adjust the refrigeration of the refrigerator after the temperature sensor of the refrigerator fails, and can accurately control the refrigeration of the refrigerator after the temperature sensor fails according to the start-stop time before the failure, the influence of the refrigerator door opening time on the refrigeration time of the refrigerator, and the influence of different gear adjustments on the refrigeration time of the refrigerator. Therefore, the refrigerator can be closer to the real refrigeration effect. The refrigerator is a long-term open household appliance, and the fault protection control method of the refrigerator can prevent the refrigerator from not refrigerating, poor refrigeration effect or strong refrigeration effect when the temperature sensor of the refrigerator fails.

[0037] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method of fail-safe control of a refrigerator, characterized by: The method comprises collecting the following different state working parameters by the electric control device in the refrigerator: The first state: the refrigerator temperature position does not change, the compressor working time T1 and the compressor stop time K1 during the refrigeration corresponding to the current position are collected; the refrigerator door switch is opened within a refrigeration period, the door opening time t1 before the sensor is damaged, the door opening time t after the sensor is damaged, and the compressor working time T2 are collected; The second state: the compressor working time T3 and the compressor stop time K3 during a refrigeration period after the change of the refrigerator temperature position are collected, and the position before the change is S1 and the position after the change is S2; the temperature value W1 corresponding to the position S1 before the change and the temperature value W2 corresponding to the position S2 after the change are collected; and the changed position value S3 is collected; The electric control device collects the working parameters of the above two states in cycles, and when the working parameter collection of a cycle is completed, the working parameter collection of the next cycle is continued, and if the working parameter collection of the next cycle is completed, the working parameter of the previous cycle is no longer memorized; at this time, when the temperature sensor is damaged, the following formula is used to calculate the compressor working time T6 and the compressor stop time K6 for the cycle refrigeration: Formula one: control calculation of the compressor working time T6 T6=1 / t1*t*(T2—T1)+|T3—T1| / (W2—W1)*s3+T1 Formula two: control calculation of the compressor stop time K6 K6=K1—|K3—K1| / (W2—W1)*s3.

2. The fault protection control method of the refrigerator according to claim 1, characterized in that: If the temperature sensor is damaged when the working parameter collection of the next cycle is not completed for the second state, the working parameter of the first state of the cycle is used for fault protection control calculation, and then the compressor is started and stopped according to the calculation result; If the temperature sensor is damaged when the working parameter collection of the next cycle is not completed for the above two states, the compressor is started and stopped according to the normal refrigeration time T4 and the stop time K4; If the temperature sensor is damaged when there is no normal refrigeration state, the compressor is started and stopped according to the fixed refrigeration time T5 and the stop time K5 built in the electric control device.

3. The fault protection control method of the refrigerator according to claim 1, characterized in that: When the temperature sensor is damaged, the door is opened, or the position is changed when the compressor is working, the electric control device collects the refrigeration time T7 of this time, then calculates according to the calculation results T6 and K6, continues to refrigerate for T6-T7 time, and then starts K6 and T6 for cycle refrigeration; When the temperature sensor is damaged, the door is opened, or the position is changed when the compressor is stopped, the electric control device collects the stop time K8 of this time, then calculates according to the calculation results T6 and K6, continues to stop for K6-K8 time, and then starts K6 and T6 for cycle refrigeration.

4. The fault protection control method for a refrigerator according to claim 2, characterized in that: The value of T5 is 20 min, and the value of K5 is 15 min.