WO2021213272A1

WO2021213272A1 - Control method for single-system refrigerator

Info

Publication number: WO2021213272A1
Application number: PCT/CN2021/087777
Authority: WO
Inventors: 许艳青
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2020-08-04
Filing date: 2021-04-16
Publication date: 2021-10-28
Also published as: CN114061253B; CN114061253A

Abstract

Provided is a control method for a single-system refrigerator, the method comprising the following steps: S1, acquiring an environment temperature Tc of the environment where a refrigerator is located, and acquiring the running time of the refrigerator; and S2, controlling an operating state of a refrigerating system according to the environment temperature and the running time. An operating state of a refrigerating system can be automatically controlled according to an environment temperature and a running time, such that effective refrigeration can be realized, energy conservation and cost reduction can also be realized, and potential safety hazards are reduced.

Description

Control method of single-system refrigerator

Technical field

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

Background technique

The single-system refrigerator provides cold capacity to the refrigerator compartment and freezer compartment at the same time through a set of refrigeration system. In the current single-system refrigerator, the compressor in the refrigeration system is usually controlled by the temperature of the refrigerating compartment. When the temperature of the refrigerator is low, for example, the room temperature in winter is very low and sometimes close to 0 degrees Celsius, in order to avoid being caused by too low room temperature. The refrigerating room temperature is too low to reach the starting point temperature, causing the temperature of the freezer compartment to be too high and causing food deterioration. Generally, heating wires are added to the refrigerating room, and the refrigerating room is heated by the heating wire to increase the temperature of the refrigerating room. The temperature at the start-up point is reached. However, this control method has the following drawbacks: 1. The use of heating wires increases costs, 2 the heating wires may cause fires and increase safety hazards; 3. The heating wires are heated, which increase electrical loss.

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

Summary of the invention

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

In order to achieve one of the above-mentioned purposes of the invention, the present invention adopts the following technical solutions:

A control method of a single-system refrigerator, characterized in that it comprises the following steps:

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

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

Further, step S2 includes the following steps: S21 judges whether the ambient temperature is greater than or equal to T1; if yes, then proceeds to step S22 after turning on; if not, then proceeds to step S23 after turning on; S22 judges whether the single operating time of the refrigerator is greater than or equal to a1*(Kl* Tc/b), if yes, stop; if otherwise, continue to run step S22; S23 judge whether the single running time of the refrigerator is ≥a2*(Kl*Tc/b), if yes, stop; if otherwise, continue to run step S23; where, a1, a2, and b are proportional coefficients, and a1>a2, Kl is the refrigerator volume, 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 yes, return to step S1; if not, continue to run step S22'; Step S23' after step S23: judge whether the refrigerator single stop time ≥ c2*(Kl*Tc/b); if yes, return to step S1; if 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 yes, proceed to step S25 after turning on the machine; if not, proceed to step S21; S25 judge whether the single operation time of the refrigerator is greater than or equal to a3*( Kl*Tc/b), if yes, stop; if otherwise, continue to run step S25; wherein, a3 is the proportional coefficient, and a3>a1, Kl is the refrigerator volume, 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 yes, return to step S1; if not, continue to run step S22'; Step S23' after step S23: Determine whether the single downtime of the refrigerator is ≥c2*(Kl*Tc/b); if yes, return to step S1; if otherwise, continue to run step S23'; S25' after step S25, Judge whether the single shutdown time of the refrigerator is ≥c3*(Kl*Tc/b); if yes, return to step S1; if otherwise, continue to run step S25'; where c1, c2, and c3 are all coefficients, and c3<c1<c2 ; Kl is the volume of the refrigerator, and 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 is greater than or equal to Ta, if yes, then proceeds to step S2b; if not, then proceeds to step S2c; S2b judges whether the total operating time of the refrigerator is greater than or equal to x1*(Kl*Tc/y), If yes, go to step S2d; if otherwise, the compressor runs at H1 frequency; S2c judges whether the total running time of the refrigerator ≥ x2*(Kl*Tc/y), if yes, go to step S2e; if otherwise, the compressor runs 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, then the compressor runs at H6 frequency; where x1, x2, x3, x4 and y are all proportional coefficients, and x1>x2, x3 >x4, x3>x1, x4>x2, Kl is the refrigerator volume, Tc is the ambient temperature, H1>H2, H3>H5, H4>H6, H1>H4>H3, H2>H6>H5.

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

Further, step S2 also includes the following steps: S2f judges whether the ambient temperature is greater than or equal to Tb, and Tb is greater than Ta; if yes, proceed to step S2g; if not, proceed to step S2a; S2g judges whether the total operating time of the refrigerator is greater than or equal to x5*(Kl* Tc/y), if yes, go to 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 yes, the compressor runs at H8 frequency; if No, the compressor runs at H9 frequency; where x5, x6 and y are all proportional coefficients, and x6>x5, x5>x1, x6>x3, Kl is the refrigerator volume, 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: 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 increase the refrigeration heating wire, but 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 the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.

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 flow chart of a refrigerator control method according to another preferred embodiment of the present invention;

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

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

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

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to Figures 1 to 6, which are a preferred embodiment of the refrigerator control method of the present invention, including the following steps: S1 obtains the ambient temperature Tc of the environment in which the refrigerator is located, and obtains the operating time of the refrigerator; S2 Time controls the working status 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 will be automatically controlled according to the ambient temperature and running time. This refrigerator control method can not only effectively refrigerate, but also It can also achieve energy saving and cost reduction, and reduce safety hazards.

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

The size of the ambient temperature Tc determines the heat exchange rate of the refrigerator, and the refrigerator heat exchange rate determines the food temperature cooling rate d/dt. That is to say, the greater the ambient temperature Tc, the slower the refrigerator heat exchange rate, but the lower the food temperature cooling rate d/dt.

The refrigerator volume Kl and the ambient temperature Tc are in a logical “AND” relationship, and the change of any one of them can affect the control method of the AC compressor and the DC compressor. Therefore, in step S2, based on the volume K1 of the refrigerator, the operation of the compressor is controlled by detecting the ambient temperature and the operation time 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 yes, then proceed to step S22 after booting; if not, then proceed to step S23 after booting; those skilled in the art can understand that the “boot” mentioned here and later in this article refers to Start the compressor.

S22 judge whether the single running time of the refrigerator is ≥a1*(Kl*Tc/b), if yes, stop; if otherwise, continue to run step S22; those skilled in the art can understand that the “stop” mentioned here and later in this article "It means that the compressor is turned off and the refrigeration system is no longer working.

S23 judge whether the single operation time of the refrigerator is ≥ a2*(Kl*Tc/b), if yes, stop; if otherwise, continue to run step S23; where a1, a2, and b are proportional coefficients, and a1>a2, Kl is the refrigerator Volume, Tc is the ambient temperature.

This method comprehensively considers the overall heat load of the refrigerator through the volume and ambient temperature of the refrigerator. The operating time of the refrigerator is based on a*(Kl*Tc/b), which can more accurately and reasonably control the temperature of the refrigerator; 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 yes, return to step S1; if not, continue to run step S22'; Step S23' after step S23: judge whether the refrigerator single stop time ≥ c2*(Kl*Tc/b); if yes, return to step S1; if 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 and ambient temperature of the refrigerator, and the shutdown time of the refrigerator is based on c*(Kl*Tc/b), which can more accurately and reasonably control the temperature of the refrigerator. Among them, 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 is greater than or equal to T2, and T2 is greater than T1; if yes, turn on the machine and proceed to step S25; if not, proceed to step S21; S25 judge whether the single operation time of the refrigerator is greater than or equal to a3*(Kl *Tc/b), if yes, stop; if not, continue to run step S25; where a3 is a proportional coefficient, and a3>a1, Kl is the refrigerator volume, and Tc is the ambient temperature.

Further, step S2 also includes: S25' located after step S25, judging whether the single downtime of the refrigerator is ≥c3*(Kl*Tc/b); if yes, return to step S1; if otherwise, continue to run step S25'; where , C1, c2 and c3 are all 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, the shorter the compressor single operation time, and the longer the single shutdown time, so that the temperature control of the comparative refrigerator is realized.

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

The control method between two adjacent temperature ranges is similar to the above-mentioned control method at 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℃ and a is between 1.0～1.2, when the single operation time of the refrigerator is less than A*(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single operation time of the refrigerator is greater than 1.2A *(Kl*Tc/100), the refrigerator has poor energy saving effect. 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) The refrigerator cannot quickly achieve the cooling effect.

When 10℃≤Tc＜20℃, a is between 0.7～0.9, when the single operation time of the refrigerator is less than 0.7*(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single operation time of the refrigerator is greater than 0.9 *(Kl*Tc/100), the refrigerator has poor energy saving effect. c is between 0.5 and 0.7. When the single downtime of the refrigerator is less than 0.5 (Kl*Tc/100), the refrigerator has a poor energy saving effect; when the single downtime of the refrigerator is greater than 0.7 (Kl*Tc/100), the refrigerator cannot quickly reach Refrigeration effect.

When 3℃≤Tc＜10℃ and a is between 0.5～0.6, when the single operation time of the refrigerator is less than 0.5 (Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single operation time of the refrigerator is greater than 0.6( Kl*Tc/100), the refrigerator has a poor energy-saving effect. c is between 1.0 and 1.5. When the single downtime of the refrigerator is less than (Kl*Tc/100), the refrigerator has a poor energy-saving effect; when the single downtime of the refrigerator is greater than 1.5 (Kl*Tc/100), the refrigerator cannot quickly achieve cooling Effect.

When Tc<3℃, a is between 0.2～0.4. When the single operation time of the refrigerator is less than 0.2(Kl*Tc/100), the refrigerator cannot quickly achieve the cooling effect; when the single operation time of the refrigerator is greater than 0.4(Kl* At Tc/100), the refrigerator has poor energy-saving effect. c is between 4 and 6. When the single downtime of the refrigerator is less than 4Kl*Tc, the refrigerator wastes electricity; when the single downtime 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 and T2 is 10°C. For other parameters, please refer to Figure 2. The operation of the refrigerator can still be effectively controlled at low temperatures without relying on heating wires.

Please also refer to Fig. 3, step S2 also includes: S26 judges whether the ambient temperature is ≥20°C; if yes, turn on the machine and go to step S27; if not, go to step S24; S27 judge whether the single operation time of the refrigerator is ≥(Kl *Tc/b), if yes, stop; if 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 yes, return to step S1; if not, continue to run step S27'.

Therefore, under 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 the ambient temperature and the running time of the refrigerator, without setting a temperature sensor in the refrigerating compartment. In addition, 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 determines whether the ambient temperature is greater than or equal to Ta, if yes, then proceeds to step S2b; if not, then proceeds to step S2c; S2b Judge whether the total running time of the refrigerator is ≥x1*(Kl*Tc/y), if yes, go to step S2d; if otherwise, the compressor runs at H1 frequency; S2c judges whether the total running time of the refrigerator is ≥ x2*(Kl*Tc/y) If yes, go to step S2e; if otherwise, the compressor runs at H2 frequency; S2d judges whether the total running time of the refrigerator is ≥ x3*(Kl*Tc/y), if yes, then the compressor runs at H3 frequency; if not, then 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 all proportional coefficients, and x1>x2, x3>x4, x3>x1, x4>x2, Kl is the refrigerator volume, 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 and operating time of the compressor are used to control the operating frequency 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 is extended, the operating frequency H of the compressor is reduced step by step, 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 compressor operation, it is judged whether the single operation time of the refrigerator is greater than (Kl*Tc/y), if yes, then return to step S1, if otherwise, the compressor continues to run at the current frequency; To the effect of energy saving and precise temperature control.

Further, step S2 includes the following steps: S2f judges whether the ambient temperature is greater than or equal to Tb, and Tb is greater than Ta; if yes, proceed to step S2g; if not, proceed to step S2a; S2g judges whether the total running time of the refrigerator is greater than or equal to x5*(Kl*Tc /y), if yes, go to 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 yes, 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 refrigerator volume, Tc is the ambient temperature, H8<H9<H7, H8>H3, H9>H4, H7>H1. Among them, the values of x1～x6 and H1～H9 are related to the volume of the refrigerator and the ambient temperature. With a certain volume of the refrigerator, the lower the ambient temperature, the shorter the total running time of the refrigerator and the lower the compressor operating frequency, which has a better energy-saving effect.

The control method between two adjacent temperature ranges is similar to the above-mentioned control method at Ta and Tb temperature. According to the actual situation, b=10, the coefficient a, and the operating frequency H of the compressor will be based on 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 quickly achieve the cooling effect; When the running time 1 is greater than 1.2 (Kl*Tc/10), the refrigerator has a poor energy-saving effect. The x in the total operating time of the refrigerator 2 is between 2 and 3. When the total operating time of the refrigerator 2 is less than 2 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; when the total operating time of the refrigerator 2 is greater than 3 ( Kl*Tc/10), the refrigerator has poor energy-saving effect.

When 10℃≤Tc＜20℃, the x in the total running time 1 of the refrigerator is between 0.8 and 0.9. 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), the refrigerator has poor energy-saving effect.

When 3℃≤Tc＜10℃, the coefficient x of the refrigerator's total operating time 1 is between 0.6 and 0.7. When the refrigerator's total operating time 1 is less than 0.6 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect ; When the total running 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), the refrigerator has poor energy-saving effect.

When Tc<3℃, the coefficient x of the refrigerator's total operating time 1 is between 0.4 and 0.5. When the refrigerator's total operating time 1 is less than 0.4 (Kl*Tc/10), the refrigerator cannot quickly achieve the cooling effect; When the total running time 1 is greater than 0.5 (Kl*Tc/10), the refrigerator has a 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 refrigerator has a poor energy-saving effect.

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

Please also refer to Fig. 6, step S2 further includes the following steps: S2i judges whether the ambient temperature is ≥20°C, if yes, then proceeds to step S2j; if not, then proceeds to step S2f; S2j judges whether the total running time of the refrigerator is ≥(Kl *Tc/10)min, if yes, go to step S2k; if otherwise, the compressor runs at 100Hz; S2k judges whether the total running time of the refrigerator is ≥2(Kl*Tc/10)min, if yes, the compressor runs at 60Hz ; If not, the compressor runs at 80Hz.

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

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 increase the refrigeration heating wire, but will automatically control according to the ambient temperature and operating time. The control method can not only effectively refrigerate, but also achieve energy saving and cost reduction, and reduce safety hazards.

It should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately 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 implementations of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementations or implementations made without departing from the technical spirit of the present invention All changes shall be included in the protection scope of the present invention.

Claims

A control method of a single-system refrigerator, characterized in that it comprises the following steps:

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

S2 controls the working state of the refrigeration system according to the ambient temperature and operating time.
The refrigerator control method according to claim 1, wherein step S2 includes the following steps:

S21 judge whether the ambient temperature is greater than or equal to T1, if yes, then proceed to step S22 after booting; if not, then proceed to step S23 after booting;

S22 judge whether the single running time of the refrigerator is ≥a1*(Kl*Tc/b), if yes, stop; if not, continue to run step S22;

S23 judge whether the single running time of the refrigerator is ≥a2*(Kl*Tc/b), if yes, stop; if not, continue to run step S23;

Among them, a1, a2, and b are proportional coefficients, and a1>a2, Kl is the refrigerator volume, and Tc is the ambient temperature.
The control method of a single-system refrigerator according to claim 2, wherein step S2 further comprises: step S22' after step S22: judging whether a single shutdown time of the refrigerator is greater than or equal to c1*(Kl*Tc/b); If yes, return to step S1; if otherwise, continue to run step S22';

Step S23' after step S23: Determine whether the single shutdown time of the refrigerator ≥ c2*(Kl*Tc/b); if yes, return to step S1; if otherwise, continue to run step S23';

Among them, c1 and c2 are coefficients, and c1<c2; Kl is the volume of the refrigerator, and Tc is the ambient temperature.
The control method of a single-system refrigerator according to claim 2, wherein step S2 includes the following steps:

S24 judge whether the ambient temperature is greater than or equal to T2, and T2 is greater than T1; if it is, then go to step S25 after booting; if not, go to step S21;

S25 judge whether the single operation time of the refrigerator is ≥ a3*(Kl*Tc/b), if yes, stop; if otherwise, continue to run step S25; where a3 is the proportional coefficient, and a3>a1, Kl is the refrigerator volume, and Tc is Ambient temperature.
The control method of a single-system refrigerator according to claim 4, wherein step S2 further comprises:

Step S22' after step S22: judge whether the single stop time of the refrigerator is ≥ c1*(Kl*Tc/b); if yes, go back to step S1; if otherwise, continue to run step S22';

Step S23' after step S23: Determine whether the single shutdown time of the refrigerator ≥ c2*(Kl*Tc/b); if yes, return to step S1; if otherwise, continue to run step S23';

In S25' after step S25, it is judged whether the single downtime of the refrigerator is ≥ c3*(Kl*Tc/b); if yes, return to step S1; if not, continue to run step S25';

Among them, c1, c2, and c3 are all coefficients, and c3<c1<c2; Kl is the volume of the refrigerator, and Tc is the ambient temperature.
The control method of a single-system refrigerator according to claim 4, wherein T1 is between 1°C and 3°C, and T2 is between 8°C and 12°C.
The refrigerator control method according to claim 1, wherein step S2 includes the following steps:

S2a judges whether the ambient temperature is greater than or equal to Ta, if yes, go to step S2b; if not, go to step S2c;

S2b judges whether the total running time of the refrigerator is ≥x1*(Kl*Tc/y), if yes, go to step S2d; if otherwise, the compressor runs at H1 frequency;

S2c judges whether the total running time of the refrigerator is ≥ x2*(Kl*Tc/y), if yes, go to step S2e; if otherwise, the compressor runs 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 all proportional coefficients, and x1>x2, x3>x4, x3>x1, x4>x2, Kl is the refrigerator volume, Tc is the ambient temperature, H1>H2, H3>H5 , H4>H6, H1>H4>H3, H2>H6>H5.
The control method of a single-system refrigerator according to claim 7, wherein step S2 further comprises the following steps: during the operation of the compressor, it is determined whether the single operation time of the refrigerator is greater than (Kl*Tc/y), and if so, it returns Step S1, if otherwise, the compressor continues to run at the current frequency.
The control method of a single-system refrigerator according to claim 7, wherein step S2 further comprises the following steps:

S2f judges whether the ambient temperature is greater than or equal to Tb, and Tb is greater than Ta; if yes, go to step S2g; if not, go to step S2a;

S2g judges whether the total running time of the refrigerator ≥ x5*(Kl*Tc/y), if yes, go to 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 yes, 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 refrigerator volume, Tc is the ambient temperature, H8<H9<H7, H8>H3, H9>H4, H7 >H1.
The control method of a single-system refrigerator according to claim 9, wherein Ta is between 1°C and 3°C, and Tb is between 8°C and 12°C.