Intelligent frosting judgment method for air-cooled refrigerator

Abstract

The invention discloses an intelligent frosting judgment method for an air-cooled refrigerator, which is characterized in that whether the air-cooled refrigerator is frosted or not is judged according to two groups of independent conditions, and the judgment of the first group of conditions is based on the accumulated door opening times of the refrigerator and the accumulated running time of a compressor; the second set of conditions is determined according to the refrigerating chamber temperature, the temperature duration and the compressor cumulative operation time. By changing the defrosting judgment logic, the problem that an existing refrigerator is prone to intermittent non-refrigeration is solved, and the defects in the prior art are overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of air-cooled refrigerators, and specifically to an intelligent frosting determination method for an air-cooled refrigerator. Background Art

[0002] Currently, the defrost determination of air-cooled refrigerators is mainly based on the cumulative operating time of the refrigerator compressor and the number of times the refrigerator door is opened. For example, when the cumulative number of door openings is less than or equal to 1 and the cumulative operating time of the compressor reaches 24 hours, the defrosting program is started. This solution can basically meet the user's needs in general environments, but it is prone to failures in harsh environments. For example, when the environmental humidity is high and the frequency of opening and closing the door is high, a large amount of frost will condense on the refrigerator evaporator in a short time, resulting in the blockage of the air circulation circuit, and then the refrigeration effect of the refrigerator is poor or even non-refrigerating, and the refrigeration is only restored after defrosting until the defrosting condition is met. This leads to the problem of intermittent non-refrigeration of the refrigerator. Summary of the Invention

[0003] The purpose of the present invention is to provide an intelligent frosting determination method for an air-cooled refrigerator, which solves the problem of intermittent non-refrigeration that currently occurs in refrigerators by changing the defrost judgment logic, so as to overcome the deficiencies of the prior art.

[0004] The present invention provides an intelligent frosting determination method for an air-cooled refrigerator through the following technical solutions, characterized in that it determines whether to frost according to two sets of independent conditions

[0005] Among them, the determination of the first set of conditions includes the following steps:

[0006] S01, record the cumulative operating time t1 of the compressor and the cumulative number of door openings n of the refrigerator;

[0007] S02, if t1≥24h and n≤1, or t1≥12h and 1<n≤8, or t1≥10h and 8<n, proceed to the next step, otherwise return to step S01;

[0008] S03, perform defrosting and temperature pulling to lower the temperature of the freezer compartment;

[0009] S04, detect the temperature Tfa of the freezer compartment, record the temperature pulling time t2, and detect the freezer compartment shutdown temperature Tft in the original state data of the unit;

[0010] S05, if Tfa≤Tft+2℃, or Tfa>Tft+2℃ and t2≥2h, determine frosting, otherwise return to step S03;

[0011] The determination of the second set of conditions includes the following steps:

[0012] S21, detecting the refrigerating chamber temperature Tra, detecting the refrigerating chamber shutdown temperature Trk in the original state data of the unit, and recording the cumulative running time t1 of the compressor;

[0013] S22, if Tra≥Trk+5°C, proceed to the next step, otherwise return to step S21;

[0014] S23, record the duration t3 of Tra≥Trk+5℃;

[0015] S24, if t3 ≥ 30 min, proceed to the next step, otherwise return to step S22;

[0016] S25, if t1 ≥ 7h, determine that frosting has occurred, otherwise return to step S23.

[0017] When frosting is determined by the first group of conditions or the second group of conditions, the following steps are continued:

[0018] S06, perform defrosting;

[0019] S07, detecting the temperature rise Tfv after the defrosting program is executed;

[0020] S08, if Tfv≥5°C, proceed to the next step, otherwise return to step S06;

[0021] S09, turn off the heater and defrost ends;

[0022] S10, clear data such as t1, n, etc., and return to steps S01 and S21.

[0023] The present invention has the following beneficial effects: the present invention provides an intelligent frosting determination method for an air-cooled refrigerator. Based on the method in which a traditional air-cooled refrigerator determines whether frosting occurs based on the accumulated compressor operating time and the accumulated number of door openings, a method for determining whether frosting occurs based on the refrigeration chamber temperature, temperature duration and accumulated compressor operating time is added, thereby solving the problem of intermittent non-refrigeration that is prone to occur in current refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention provides a flow chart of an intelligent frosting determination method for an air-cooled refrigerator. DETAILED DESCRIPTION

[0025] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0026] The components of the embodiments of the present application that are usually described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application.

[0027] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] Next, refer to Figure 1 Describe an intelligent defrost determination method for an air-cooled refrigerator according to some embodiments of the present application.

[0031] An intelligent defrost determination method for an air-cooled refrigerator, characterized in that it determines whether to defrost according to two sets of independent conditions, and the defrosting program is executed if either set of conditions determines defrosting.

[0032] Among them, the determination of the first set of conditions includes the following steps:

[0033] S01, record the cumulative operating time t1 of the compressor and the cumulative number of times n the refrigerator door is opened;

[0034] S02, if t1≥24h and n≤1, or t1≥12h and 1 < n≤8, or t1≥10h and 8 < n, go to the next step, otherwise return to step S01;

[0035] S03, perform defrosting and temperature raising to lower the temperature of the freezer compartment;

[0036] S04, detecting the freezing chamber temperature Tfa, recording the temperature-drawing time t2, and detecting the freezing chamber shutdown temperature Tft in the original state data of the unit;

[0037] S05, if Tfa≤Tft+2℃, or Tfa>Tft+2℃ and t2≥2h, it is determined that frosting occurs, otherwise it returns to step S03;

[0038] In step S03, defrosting and warming are performed to ensure that the temperature inside the refrigerator will not be too high after defrosting.

[0039] The determination of the second set of conditions includes the following steps:

[0040] S21, detecting the refrigerating chamber temperature Tra, detecting the refrigerating chamber shutdown temperature Trk in the original state data of the unit, and recording the cumulative running time t1 of the compressor;

[0041] S22, if Tra≥Trk+5°C, proceed to the next step, otherwise return to step S21;

[0042] S23, record the duration t3 of Tra≥Trk+5℃;

[0043] S24, if t3 ≥ 30 min, proceed to the next step, otherwise return to step S22;

[0044] S25, if t1 ≥ 7h, determine that frosting has occurred, otherwise return to step S23.

[0045] When frosting is determined by the first group of conditions or the second group of conditions, the following steps are continued:

[0046] S06, perform defrosting;

[0047] S07, detecting the temperature Tfv of the refrigerator evaporator;

[0048] S08, if Tfv≥5°C, proceed to the next step, otherwise return to step S06;

[0049] S09, turn off the heater and defrost ends;

[0050] S10, clearing data such as t1 and n, and returning to steps S01 and S21.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent frosting determination method for an air-cooled refrigerator, characterized in that: Determine whether frosting occurs according to two sets of independent conditions. Among them, the determination of the first set of conditions includes the following steps: S01, Record the cumulative operation time t1 of the compressor and the cumulative number of times the refrigerator door is opened n; S02, If t1≥24h and n≤1, or t1≥12h and 1 < n≤8, or t1≥10h and 8 < n, proceed to the next step; otherwise, return to step S01; S03, Perform defrosting and temperature pulling to lower the temperature of the freezer compartment; S04, Detect the temperature Tfa of the freezer compartment, record the temperature pulling time t2, and detect the freezer compartment shutdown temperature Tft in the original unit state data; S05, If Tfa≤Tft + 2°C, or Tfa>Tft + 2°C and t2≥2h, determine frosting; otherwise, return to step S03; The determination of the second set of conditions includes the following steps: S21, Detect the temperature Tra of the refrigerator compartment, detect the refrigerator compartment shutdown temperature Trk in the original unit state data, and record the cumulative operation time t1 of the compressor; S22, If Tra≥Trk + 5°C, proceed to the next step; otherwise, return to step S21; S23, Record the duration t3 when Tra≥Trk + 5°C; S24, If t3≥30min, proceed to the next step; otherwise, return to step S22; S25, If t1≥7h, determine frosting; otherwise, return to step S23. When frosting is determined via the first set of conditions or the second set of conditions, continue to execute the following steps: S06, Perform defrosting; S07, Detect the temperature rise Tfv after the defrosting program is executed; S08, If Tfv≥5°C, proceed to the next step; otherwise, return to step S06; S09, Turn off the heater, and the defrosting ends; S10, Clear data such as t1 and n, and return to steps S01 and S21.

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