CN114061253B - Control Method of Single System Refrigerator - Google Patents

Abstract

The invention provides a control method of a single-system refrigerator, which comprises the following steps: s1, acquiring the ambient temperature Tc of the environment where the refrigerator is located, and acquiring the running time of the refrigerator; and S2, controlling the working state of the refrigerating system according to the ambient temperature and the running time. In the method, the working state of the refrigerating system is not controlled by the refrigerating temperature any more, and the refrigerating heating wire is not required to be added, but the automatic control can be carried out according to the ambient temperature and the running time.

Description

Control Method of Single System Refrigerator

technical field

The invention relates to refrigerator refrigeration technology, in particular to a control method for a single-system refrigerator.

Background technique

Single-system refrigerators provide cooling capacity to the refrigerator and freezer at the same time through a set of refrigeration systems. At present, in single-system refrigerators, the start and stop of the compressor in the refrigeration system is usually controlled by the temperature of the refrigerator room. The refrigerating room is too low to reach the temperature of the starting point, causing the temperature of the refrigerating room to be too high and causing food deterioration. Generally, heating wires are added in the refrigerating room, and the refrigerating room is heated by the heating wire to increase the temperature of the refrigerating room. Reach the start-up point temperature. However, this control method has the following disadvantages: 1. The use of heating wires increases costs, 2. Heating wires may cause fires and increase potential safety hazards; 3. Heating wires heat and increase power loss.

In view of this, it is necessary to provide a new control method for a single-system refrigerator to solve the above problems.

Contents of the invention

The present invention aims to solve at least one of the technical problems in the prior art, thereby providing a control method for a single-system refrigerator.

For realizing one of above-mentioned object of the invention, the present invention adopts following technical scheme:

A method for controlling a single-system refrigerator, comprising the following steps:

S1 obtains the ambient temperature Tc of the environment where the refrigerator is located, and obtains the running time of the refrigerator;

S2 controls the working state of the refrigeration system according to the ambient temperature and running time.

Further, step S2 includes the following steps: S21 judges whether the ambient temperature ≥ T1, if so, then enter step S22 after starting up; if not, then enter step S23 after starting up; S22 judges whether the single operation time of the refrigerator is ≥a1*(Kl* Tc/b), if so, then shut down; If otherwise, continue to run step S22; S23 judges whether the single running time of the refrigerator is more than or equal to a2*(Kl*Tc/b), if so, shut down; if otherwise, continue to run step S23; wherein, a1, a2 and b are proportional coefficients, and a1>a2, Kl is the volume of the refrigerator, and Tc is the ambient temperature.

Further, step S2 also includes: step S22' after step S22: judging whether the single shutdown time of the refrigerator is ≥ c1*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S22'; Step S23' after step S23: determine whether the single downtime of the refrigerator is ≥ c2*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S23'; where c1 and c2 are coefficients , and c1<c2; Kl is the volume of the refrigerator, and Tc is the ambient temperature.

Further, step S2 includes the following steps: S24 judges whether the ambient temperature is greater than or equal to T2, and T2 is greater than T1; if so, then proceeds to step S25 after starting up; if not, proceeds to step S21; S25 judges whether the single operation time of the refrigerator is greater than or equal to a3*( Kl*Tc/b), if yes, then shut down; otherwise, continue to run step S25; wherein, a3 is a proportional coefficient, and a3>a1, Kl is the volume of the refrigerator, and Tc is the ambient temperature.

Further, step S2 also includes: step S22' after step S22: judging whether the single shutdown time of the refrigerator is ≥ c1*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S22'; Step S23' after step S23: determine whether the single shutdown time of the refrigerator is ≥ c2*(Kl*Tc/b); if so, return to step S1; otherwise continue to run step S23'; be positioned at S25' after step S25, Determine whether the single shutdown time of the refrigerator is ≥ c3*(Kl*Tc/b); if yes, return to step S1; otherwise, continue to run step S25'; where c1, c2 and c3 are coefficients, and c3<c1<c2 ; Kl is the volume of the refrigerator, Tc is the ambient temperature.

Further, T1 is between 1°C and 3°C, and T2 is between 8°C and 12°C.

Further, step S2 includes the following steps: S2a judges whether the ambient temperature ≥ Ta, if so, then enters step S2b; if not, then enters step S2c; S2b determines whether the total running time of the refrigerator is ≥x1*(Kl*Tc/y), If yes, then enter step S2d; if otherwise, the compressor operates at H1 frequency; S2c judges whether the total operating time of the refrigerator is ≥ x2*(Kl*Tc/y), if so, enters step S2e; otherwise, the compressor operates at H2 frequency; S2d judges whether the total running time of the refrigerator is ≥x3*(Kl*Tc/y), if yes, the compressor runs at H3 frequency; if not, the compressor runs at H4 frequency; S2e judges whether the total running time of the refrigerator is ≥x4*( Kl*Tc/y), if yes, the compressor runs at H5 frequency; if not, the compressor runs at H6 frequency; among them, x1, x2, x3, x4 and y are proportional coefficients, and x1>x2, x3 >x4, x3>x1, x4>x2, Kl is refrigerator capacity, Tc is ambient temperature, H1>H2, H3>H5, H4>H6, H1>H4>H3, H2>H6>H5.

Further, step S2 also includes the following steps: during the operation of the compressor, determine whether the single operation time of the refrigerator is greater than (Kl*Tc/y), if so, return to step S1, otherwise, the compressor continues to operate at the current frequency.

Further, step S2 also includes the following steps: S2f judges whether the ambient temperature ≥ Tb, Tb is greater than Ta; if so, then enters step S2g; if not, then enters step S2a; S2g judges whether the total running time of the refrigerator is ≥x5*(Kl* Tc/y), if so, then enter step S2h; if otherwise, the compressor runs at H7 frequency; S2h judges whether the total running time of the refrigerator is ≥ x6*(Kl*Tc/y), if so, then the compressor runs at H8 frequency; if No, the compressor runs at H9 frequency; among them, x5, x6 and y are proportional coefficients, and x6>x5, x5>x1, x6>x3, Kl is the volume of the refrigerator, Tc is the ambient temperature, H8<H9<H7 , H8>H3, H9>H4, H7>H1.

Further, Ta is between 1°C and 3°C, and Tb is between 8°C and 12°C.

The beneficial effects of the present invention are: the refrigerator control method of the present invention, the working state of the refrigeration system is no longer controlled by the refrigeration temperature, and there is no need to add refrigeration heating wires, but it will be automatically controlled according to the ambient temperature and operating time, The control method of the refrigerator can not only effectively refrigerate, but also realize energy saving and cost reduction, and reduce potential safety hazards.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings on the premise of not paying creative efforts.

Fig. 1 is a flowchart of a control method of a refrigerator in a preferred embodiment of the present invention;

Fig. 2 is a flowchart of a control method of a refrigerator according to a specific embodiment of the present invention;

FIG. 3 is a flowchart of a control method of a refrigerator in another preferred embodiment of the present invention;

Fig. 4 is a flowchart of a control method of a refrigerator according to another preferred embodiment of the present invention;

Fig. 5 is a flowchart of a control method of a refrigerator according to another preferred embodiment of the present invention;

Fig. 6 is a flowchart of a control method of a refrigerator according to another preferred embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 6, which are the control method of the refrigerator according to the preferred embodiment of the present invention, including the following steps: S1 obtains the ambient temperature Tc of the environment where the refrigerator is located, and obtains the running time of the refrigerator; S2 according to the ambient temperature and the operating time Time controls the working state of the refrigeration system. In this control method, the start and stop of the refrigeration system is no longer controlled by the refrigeration temperature, and there is no need to add refrigeration heating wires, but it will be automatically controlled according to the ambient temperature and operating time. This refrigerator control method can not only effectively refrigerate, It can also save energy and reduce costs, and reduce potential safety hazards.

The inventor found in the research that the size of the refrigerator volume Kl determines the size of the food storage, and the size of the food storage determines the food temperature cooling rate d/dt; the larger the refrigerator volume Kl, the greater the food storage capacity, and the food temperature cooling rate d/dt /dt is smaller.

The ambient temperature Tc determines the heat exchange rate of the refrigerator, and the heat exchange rate of the refrigerator determines the food temperature cooling rate d/dt, that is to say, the higher the ambient temperature Tc, the slower the refrigerator heat exchange rate, but the smaller the food temperature cooling rate d/dt.

The volume Kl of the refrigerator and the ambient temperature Tc are in a logical "AND" relationship, and changes in any one of them can affect the control methods of the AC compressor and the DC compressor. Therefore, step S2 controls the operation of the compressor by detecting the ambient temperature and the running time of the refrigerator based on the volume K1 of the refrigerator.

Please refer to Figures 1 to 3, when the compressor in the refrigeration system is an AC compressor, step S2 includes the following steps:

S21 judges whether the ambient temperature is greater than or equal to T1, if so, enter step S22 after starting up; Start the compressor.

S22 judges whether the single running time of the refrigerator is more than or equal to a1*(Kl*Tc/b), if so, then shut down; if otherwise, continue to run step S22; those skilled in the art can understand that here and the "shutdown" mentioned later in this paper ” refers to turning off the compressor and the refrigeration system is no longer working.

S23 judges whether the single running time of the refrigerator is ≥a2*(Kl*Tc/b), if so, then shut down; otherwise, continue to run step S23; wherein, a1, a2 and b are proportional coefficients, and a1>a2, Kl is the refrigerator Volume, Tc is ambient temperature.

This method comprehensively considers the overall heat load of the refrigerator through the volume of the refrigerator and the ambient temperature, and the running time of the refrigerator is based on a*(Kl*Tc/b) as a reference, so that the temperature of the refrigerator can be controlled more accurately and reasonably; among them, in different In the step, the coefficient a is represented by a1, a2...an, and n is a natural number greater than 1.

Further, step S2 also includes: step S22' after step S22: judging whether the single shutdown time of the refrigerator is ≥ c1*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S22'; Step S23' after step S23: determine whether the single downtime of the refrigerator is ≥ c2*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S23'; where c1 and c2 are coefficients , and c2>c1; Kl is the volume of the refrigerator, and Tc is the ambient temperature.

This method comprehensively considers the overall heat load of the refrigerator through the volume of the refrigerator and the ambient temperature, and takes c*(Kl*Tc/b) as a reference for the downtime of the refrigerator, so that the temperature of the refrigerator can be controlled more accurately and reasonably. Wherein, in different steps, the coefficient c is represented by c1, c2...cn, and n is a natural number greater than 1.

Further, step S2 also includes: S24 judging whether the ambient temperature ≥ T2, T2 is greater than T1; if so, then start the machine and enter step S25; if not, then enter step S21; S25 judge whether the single operation time of the refrigerator is ≥ a3*(Kl *Tc/b), if yes, then shut down; otherwise, continue to run step S25; wherein, a3 is the proportional coefficient, and a3>a1, Kl is the volume of the refrigerator, and Tc is the ambient temperature.

Further, step S2 also includes: S25' after step S25, judging whether the single shutdown time of the refrigerator is ≥ c3*(Kl*Tc/b); if so, return to step S1; otherwise, continue to run step S25'; wherein , c1, c2 and c3 are coefficients, and c3<c1<c2; Kl is the volume of the refrigerator, and Tc is the ambient temperature.

In this method, the lower the ambient temperature is, the shorter the single running time of the compressor is, and the longer the single downtime of the compressor is, so as to realize the temperature control compared with the refrigerator.

The invention divides the environment where the refrigerator is located into multiple temperature ranges, and sets corresponding coefficients according to different ambient temperatures. In a specific embodiment, please refer to FIG. 2 , T1 is between 1° C. and 3° C., and T2 is between 8° C. and 12° C.; at low temperatures, the operation of the refrigerator can be effectively controlled without relying on the heating wire.

The control method between two adjacent temperature ranges is similar to the control method at the above T1 and T2 temperatures. According to the actual situation, b=100, and the coefficients a and c will be adjusted accordingly according to the ambient temperature. The specific reference is as follows:

When Tc≥20°C and a is between 1.0 and 1.2, when the single running time of the refrigerator is less than A*(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single running time of the refrigerator is greater than 1.2A *(Kl*Tc/100) the energy-saving effect of the refrigerator is poor. c is between 0.3 and 0.4. When the single downtime of the refrigerator is less than 0.3A*(Kl*Tc/100), the energy-saving effect of the refrigerator is poor; when the single downtime of the refrigerator is greater than 0.4A*(Kl*Tc/b) At this time, the refrigerator cannot achieve the cooling effect quickly.

When Tc≥10°C<20°C, and a is between 0.7 and 0.9, when the single running time of the refrigerator is less than 0.7*(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single running time of the refrigerator is greater than 0.9 *(Kl*Tc/100) the energy-saving effect of the refrigerator is poor. c ranges from 0.5 to 0.7. When the single downtime of the refrigerator is less than 0.5 (Kl*Tc/100), the energy-saving effect of the refrigerator is poor; when the single downtime of the refrigerator is greater than 0.7 (Kl*Tc/100), the refrigerator cannot quickly achieve Cooling effect.

When Tc≥3°C<10°C, and a is between 0.5 and 0.6, when the single running time of the refrigerator is less than 0.5(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single running time of the refrigerator is greater than 0.6( Kl*Tc/100) refrigerator energy saving effect is poor. c ranges from 1.0 to 1.5. When the single downtime of the refrigerator is less than (Kl*Tc/100), the energy-saving effect of the refrigerator is poor; when the single downtime of the refrigerator is greater than 1.5 (Kl*Tc/100), the refrigerator cannot quickly achieve refrigeration Effect.

When Tc<3°C, a ranges from 0.2 to 0.4, and when the single running time of the refrigerator is less than 0.2(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single running time of the refrigerator is greater than 0.4(Kl*Tc/100), Tc/100) refrigerator energy saving effect is poor. c ranges from 4 to 6. When the single shutdown time of the refrigerator is less than 4Kl*Tc, the refrigerator wastes electricity; when the single shutdown time of the refrigerator is greater than 6(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect.

In a specific embodiment, please refer to Figure 2, T1 is 3°C, T210 is °C, other parameters please refer to Figure 2, the operation of the refrigerator can be effectively controlled at low temperatures without relying on the heating wire.

Please also refer to shown in Figure 3, step S2 also includes: S26 judges whether ambient temperature ≥ 20 ℃; If so, then start the machine and enter step S27; *Tc/b), if yes, then shut down; otherwise, continue to run step S27.

Further, step S2 also includes: S27' after step S27, judging whether the single shutdown time of the refrigerator is ≥ 0.3*(Kl*Tc/b); if so, return to step S1; otherwise continue to run step S27'.

Therefore, at the usable ambient temperature of the refrigerator, the start and stop of the refrigeration system can be controlled based on the volume of the refrigerator, and through the ambient temperature and the running time of the refrigerator, without setting a temperature sensor in the refrigerator. Moreover, the lower the ambient temperature, the shorter the single running time of the refrigerator, the longer the downtime, and the better the energy saving effect.

Please also refer to Figures 4 to 6, when the compressor is a DC compressor, step S2 includes the following steps: S2a judges whether the ambient temperature ≥ Ta, if so, enters step S2b; if not, enters step S2c; S2b Determine whether the total running time of the refrigerator is ≥x1*(Kl*Tc/y), if so, enter step S2d; otherwise, the compressor runs at H1 frequency; S2c judges whether the total running time of the refrigerator is ≥x2*(Kl*Tc/y) , if so, enter step S2e; otherwise, the compressor operates at H2 frequency; S2d judges whether the total operating time of the refrigerator is ≥ x3*(Kl*Tc/y), if so, the compressor operates at H3 frequency; if not, compress The machine runs at H4 frequency; S2e judges whether the total running time of the refrigerator is ≥ x4*(Kl*Tc/y), if yes, the compressor runs at H5 frequency; if not, the compressor runs at H6 frequency; among them, x1, x2 , x3, x4 and y are proportional coefficients, and x1>x2, x3>x4, x3>x1, x4>x2, Kl is the volume of the refrigerator, Tc is the ambient temperature, H1>H2, H3>H5, H4>H6, H1>H4>H3, H2>H6>H5.

In this method, based on the volume of the refrigerator, the operating frequency of the compressor is controlled through the operating frequency and operating time of the compressor, and there is no need to set a low-temperature supplementary heating wire. Moreover, at the same temperature, as the total operating time of the compressor increases, the operating frequency H of the compressor is gradually reduced, which can effectively prevent the refrigeration compartment from being suddenly overcooled, and the control is more precise.

Further, step S2 also includes the following steps: during the operation of the compressor, determine whether the single operation time of the refrigerator is greater than (Kl*Tc/y), if so, return to step S1, if otherwise, the compressor continues to operate at the current frequency; further start To the effect of energy saving and precise temperature control.

Further, step S2 includes the following steps: S2f judges whether the ambient temperature ≥ Tb, and Tb is greater than Ta; if so, then enters step S2g; if not, then enters step S2a; S2g determines whether the total running time of the refrigerator is ≥x5*(Kl*Tc /y), if so, then enter step S2h; if otherwise, the compressor runs at H7 frequency; S2h judges whether the total running time of the refrigerator is ≥x6*(Kl*Tc/y), if so, then the compressor runs at H8 frequency; if not , the compressor runs at H9 frequency; among them, x5, x6 and y are proportional coefficients, and x6>x5, x5>x1, x6>x3, Kl is the volume of the refrigerator, Tc is the ambient temperature, H8<H9<H7, H8>H3, H9>H4, H7>H1. Among them, the values of x1~x6, H1~H9 are related to the volume of the refrigerator and the ambient temperature. When the volume of the refrigerator is constant, the lower the ambient temperature, the shorter the total running time of the refrigerator, and the lower the operating frequency of the compressor, and the energy-saving effect is better.

The invention divides the environment where the refrigerator is located into multiple temperature ranges, and sets corresponding coefficients according to different ambient temperatures. In a specific embodiment, please refer to FIG. 2 , T1 is between 1° C. and 3° C., and T2 is between 8° C. and 12° C.; at low temperatures, the operation of the refrigerator can be effectively controlled without relying on the heating wire.

The control method between two adjacent temperature ranges is similar to the control method at Ta and Tb temperatures above. According to the actual situation b=10, the coefficient a, and the operating frequency H of the compressor will be adjusted according to the actual ambient temperature. Adjustment. The specific reference is as follows:

When Tc≥20℃, x in the total running time 1 of the refrigerator is between 1.0 and 1.2. When the total running time 1 of the refrigerator is less than (Kl*Tc/10), the refrigerator cannot achieve the cooling effect quickly; When the running time 1 is greater than 1.2 (Kl*Tc/10), the energy-saving effect of the refrigerator is poor. The x in the total running time 2 of the refrigerator is between 2 and 3. When the total running time 2 of the refrigerator is less than 2(Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the total running time 2 of the refrigerator is greater than 3( Kl*Tc/10) refrigerator energy saving effect is poor.

When Tc≥10°C<20°C, x in the total running time 1 of the refrigerator is between 0.8 and 0.9, and when the total running time 1 of the refrigerator is less than 0.8 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; When the total running time 1 of the refrigerator is greater than 0.9 (Kl*Tc/10), the energy-saving effect of the refrigerator is poor. The x in the total running time 2 of the refrigerator is between 1.6 and 1.8. When the total running time 2 of the refrigerator is less than 1.6 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the total running time 2 of the refrigerator is greater than 1.8 ( Kl*Tc/10) refrigerator energy saving effect is poor.

When Tc≥3°C<10°C, the coefficient x of the total running time 1 of the refrigerator is between 0.6 and 0.7, and when the total running time 1 of the refrigerator is less than 0.6 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect ; When the total operating time 1 of the refrigerator is greater than 0.7 (Kl*Tc/10), the energy-saving effect of the refrigerator is poor. The coefficient x of the total running time 2 of the refrigerator is between 1.2 and 1.4; when the total running time 2 of the refrigerator is less than 1.2 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the total running time 2 of the refrigerator is greater than 1.4 ( Kl*Tc/10) refrigerator energy saving effect is poor.

When Tc<3°C, the coefficient x of the total running time 1 of the refrigerator is between 0.4 and 0.5. When the total running time 1 of the refrigerator is less than 0.4 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the refrigerator When the total running time 1 is greater than 0.5 (Kl*Tc/10), the refrigerator has poor energy-saving effect. The coefficient x of the total running time 2 of the refrigerator is between 1.0 and 1.1. When the total running time 2 of the refrigerator is less than (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the total running time 2 of the refrigerator is greater than 1.1 (Kl *Tc/10) the energy-saving effect of the refrigerator is poor.

In a specific embodiment, please refer to Figure 5, Ta is between 1°C and 3°C, Tb is between 8°C and 12°C, and other parameters are shown in Figure 5, and it can still be effective at low temperatures without relying on the heating wire control the operation of the refrigerator.

Also see shown in Figure 6, step S2 further includes the following steps: S2i judges whether the ambient temperature is ≥ 20°C, if so, then enters step S2j; if not, then enters step S2f; S2j determines whether the total operating time of the refrigerator is ≥ (Kl *Tc/10)min, if yes, go to step S2k; otherwise, the compressor runs at 100Hz frequency; S2k judges whether the total running time of the refrigerator is ≥2(Kl*Tc/10)min, if yes, then the compressor runs at 60Hz frequency ; If not, the compressor runs at 80Hz frequency.

Therefore, at the usable ambient temperature of the refrigerator, the operating frequency of the compressor can be controlled based on the capacity of the refrigerator, and the ambient temperature and the running time of the refrigerator without setting a temperature sensor in the refrigerator. Moreover, the lower the ambient temperature is, the lower the operating frequency of the refrigerator is, the shorter the operating time is, and the energy-saving effect is better.

To sum up, in the refrigerator control method of the present invention, the working state of the refrigeration system is no longer controlled by the refrigeration temperature, and there is no need to add refrigeration heating wires, but it will be automatically controlled according to the ambient temperature and operating time. The advanced control method can not only effectively refrigerate, but also realize energy saving and cost reduction, and reduce potential safety hazards.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present invention, and they are not intended to limit the protection scope of the present invention. All changes should be included within the protection scope of the present invention.

Claims (8)

1. A control method of a single system refrigerator is characterized by comprising the following steps:

s1, acquiring the ambient temperature Tc of the environment where the refrigerator is located, and acquiring the running time of the refrigerator;

s2, controlling the working state of the refrigerating system according to the ambient temperature and the running time;

the step S2 includes the steps of: s21, judging whether the environmental temperature is more than or equal to T1, if so, starting the machine and then entering a step S22; if not, the step S23 is executed after the computer is started; s22, judging whether the single running time of the refrigerator is more than or equal to a1 (Kl Tc/b), and if so, stopping the refrigerator; if not, continuing to operate the step S22; s23, judging whether the single running time of the refrigerator is more than or equal to a2 (Kl Tc/b), if so, stopping the refrigerator; if not, continuing to operate the step S23; wherein a1, a2 and b are proportionality coefficients, a1 > a2, kl is refrigerator volume, tc is ambient temperature;

or, the step S2 includes the steps of: s2a, judging whether the ambient temperature is larger than or equal to Ta, if so, entering a step S2b; if not, the step S2c is carried out; s2b, judging whether the total running time of the refrigerator is more than or equal to x1 (Kl Tc/y), if so, entering the step S2d; if not, the compressor runs at the H1 frequency; s2c, judging whether the total refrigerator running time is more than or equal to x2 (Kl Tc/y), if so, entering the step S2e; if not, the compressor is operated at the H2 frequency; s2d, judging whether the total refrigerator running time is more than or equal to x3 (Kl Tc/y), if so, operating the compressor at the H3 frequency; if not, the compressor runs at the H4 frequency; s2e, judging whether the total running time of the refrigerator is more than or equal to x4 (Kl Tc/y), if so, running the compressor at the H5 frequency; if not, the compressor runs at the H6 frequency; wherein x1, x2, x3, x4 and y are proportionality coefficients, x1 is greater than x2, x3 is greater than x4, x3 is greater than x1, x4 is greater than x2, kl is refrigerator volume, tc is ambient temperature, H1 is greater than H2, H3 is greater than H5, H4 is greater than H6, H1 is greater than H4 is greater than H3, and H2 is greater than H6 is greater than H5.

2. The control method of the single system refrigerator according to claim 1, wherein the step S2 further comprises: step S22' following step S22: judging whether the single stop time of the refrigerator is more than or equal to c1 (Kl Tc/b); if yes, returning to the step S1; if not, continuing to operate the step S22';

step S23' located after step S23: judging whether the single stop time of the refrigerator is more than or equal to c2 (Kl Tc/b); if yes, returning to the step S1; if not, continuing to operate the step S23';

wherein c1 and c2 are both coefficients, and c1 is less than c2; kl is the refrigerator volume and Tc is the ambient temperature.

3. The control method of a single system refrigerator according to claim 1, wherein the step S2 includes the steps S21, S22 and S23, and the step S2 further includes the steps of:

s24, judging whether the environmental temperature is larger than or equal to T2 or not, wherein T2 is larger than T1; if yes, entering step S25 after starting up; if not, the step S21 is carried out;

s25, judging whether the single running time of the refrigerator is more than or equal to a3 (Kl Tc/b), and if so, stopping the refrigerator; if not, continuing to operate the step S25; wherein a3 is a proportionality coefficient, a3 is more than a1, kl is refrigerator volume, and Tc is ambient temperature.

4. The control method of the single system refrigerator according to claim 3, wherein the step S2 further comprises:

step S22' following step S22: judging whether the single-time shutdown time of the refrigerator is more than or equal to c1 (Kl Tc/b); if yes, returning to the step S1; if not, continuing to operate the step S22';

step S23' following step S23: judging whether the single stop time of the refrigerator is more than or equal to c2 (Kl Tc/b); if yes, returning to the step S1; if not, continuing to operate the step S23';

s25' following the step S25, judging whether the single stop time of the refrigerator is more than or equal to c3 (Kl Tc/b); if yes, returning to the step S1; if not, continuing to operate the step S25';

wherein c1, c2 and c3 are coefficients, and c1 is more than c3 and less than c2; kl is the refrigerator volume and Tc is the ambient temperature.

5. The method for controlling a single system refrigerator according to claim 3 or 4, wherein T1 is between 1 ℃ and 13 ℃ and T2 is between 8 ℃ and 112 ℃.

6. The control method of the single system refrigerator according to claim 1, wherein the step S2 further comprises the steps of: and in the running process of the compressor, judging whether the single running time of the refrigerator is greater than (Kl × Tc/y), if so, returning to the step S1, otherwise, continuing to run the compressor at the current frequency.

7. The method for controlling a single system refrigerator according to claim 1, wherein the step S2 includes the steps S2a, S2b, S2c, S2d and S2e, and the step S2 further includes the steps of:

s2f, judging whether the ambient temperature is greater than or equal to Tb or not, wherein Tb is greater than Ta; if yes, entering step S2g; if not, the step S2a is carried out;

s2g, judging whether the total running time of the refrigerator is more than or equal to x5 (Kl Tc/y), if so, entering the step S2h; if not, the compressor is operated at the H7 frequency;

S2H, judging whether the total running time of the refrigerator is more than or equal to x6 (Kl Tc/y), if so, running the compressor at the H8 frequency; if not, the compressor runs at the H9 frequency;

wherein x5, x6 and y are all proportionality coefficients, x6 is more than x5, x5 is more than x1, x6 is more than x3, kl is refrigerator volume, tc is ambient temperature, H8 is more than H9 and less than H7, H8 is more than H3, H9 is more than H4, and H7 is more than H1.

8. The control method of a one-system refrigerator according to claim 7, wherein Ta is between 1 ℃ and 13 ℃ and Tb is between 8 ℃ and 112 ℃.

Images