CN114061253B

CN114061253B - Control method of single-system refrigerator

Info

Publication number: CN114061253B
Application number: CN202010774231.3A
Authority: CN
Inventors: 许艳青
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2023-01-20
Anticipated expiration: 2040-08-04
Also published as: CN114061253A; WO2021213272A1

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

Background

The single system refrigerator provides cooling capacity to the refrigerating chamber and the freezing chamber simultaneously through a set of refrigerating system. In the existing single-system refrigerator, the on-off of a compressor in a refrigeration system is usually controlled by the temperature of a refrigerating chamber, when the environment temperature of the refrigerator is low, for example, the room temperature in winter is low and sometimes approaches to 0 ℃, so as to avoid the problem that food is deteriorated due to overhigh temperature of the refrigerating chamber and overhigh temperature of the refrigerating chamber caused by overlow room temperature and incapability of reaching the starting point temperature, a heating wire is generally added in the refrigerating chamber, and the refrigerating chamber is heated by the heating wire so as to improve the temperature of the refrigerating chamber and reach the starting point temperature. However, this control method has the following disadvantages: 1. the cost is increased by adopting the heating wires, and 2, the heating wires can cause fire disasters and increase potential safety hazards; 3. the heating wire heats, and the electric loss is increased.

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

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides a control method of a single-system refrigerator.

In order to realize one of the purposes of the invention, the invention adopts the following technical scheme:

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;

and S2, controlling the working state of the refrigerating system according to the ambient temperature and the running time.

Further, 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), and if so, stopping the refrigerator; if not, continuing to operate the step S23; wherein a1, a2 and b are proportionality coefficients, and a1 > a2, kl is refrigerator volume, tc is ambient temperature.

Further, step S2 further includes: 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' 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.

Further, step S2 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 > a1, kl is the refrigerator volume, and Tc is the ambient temperature.

Further, step S2 further includes: 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' 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.

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

Further, 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 refrigerator running time is more than or equal to x1 (Kl Tc/y), if so, entering the step S2d; if not, the compressor is operated at the H1 frequency; s2c, judging whether the total running time of the refrigerator 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 running time of the refrigerator is more than or equal to x3 (Kl Tc/y), if so, running the compressor at the H3 frequency; if not, the compressor runs at the H4 frequency; s2e, judging whether the total operation time of the refrigerator is more than or equal to x4 (Kl Tc/y), if so, operating the compressor at the H5 frequency; if not, the compressor runs at the H6 frequency; wherein x1, x2, x3, x4 and y are all 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.

Further, step S2 further includes the following steps: and in the running process of the compressor, judging whether the single running time of the refrigerator is greater than (Kl x Tc/y), if so, returning to the step S1, and otherwise, continuing running the compressor at the current frequency.

Further, step S2 further includes the following steps: 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 refrigerator running time 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 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.

Further, ta is between 1 ℃ and 3 ℃ and Tb is between 8 ℃ and 12 ℃.

The invention has the beneficial effects that: according to the control method of the refrigerator, 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 environmental temperature and the running time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a flow chart of a control method for a refrigerator according to a preferred embodiment of the present invention;

FIG. 2 is a flowchart illustrating a method for controlling a refrigerator according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a method for controlling a refrigerator according to another preferred embodiment of the present invention;

FIG. 4 is a flowchart illustrating a method for controlling a refrigerator according to another preferred embodiment of the present invention;

FIG. 5 is a flowchart illustrating a method for controlling 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 Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 6, a method for controlling a refrigerator according to a preferred embodiment of the present invention includes 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 control method, the start and stop of the refrigeration system are not controlled by the refrigerating temperature any more, and the refrigeration 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.

The inventor finds out in the research that the size of the refrigerator volume Kl determines the size of the food storage quantity, and the size of the food storage quantity determines the cooling rate d/dt of the food temperature; the larger the refrigerator volume Kl, the larger the food storage amount, and the smaller the food temperature cooling rate d/dt.

The magnitude of the ambient temperature Tc determines the heat exchange speed of the refrigerator, and the heat exchange speed of the refrigerator determines the cooling rate d/dt of the food temperature, that is, the larger the ambient temperature Tc is, the slower the heat exchange speed of the refrigerator is, and the smaller the cooling rate d/dt of the food temperature is.

The refrigerator volume Kl and the ambient temperature Tc are logically "and" related, and a variation in either one of them affects the control method of the ac compressor or the dc compressor. Therefore, the step S2 controls the operation of the compressor by detecting the ambient temperature and the refrigerator operation time based on the capacity Kl of the refrigerator.

Referring to fig. 1 to 3, when the compressor in the refrigeration system is an ac compressor, the step S2 includes the following steps:

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; it will be understood by those skilled in the art that reference herein and hereinafter to "start-up" refers to starting the compressor.

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; it will be understood by those skilled in the art that the reference herein and subsequently to "shutdown" refers to turning off the compressor and the refrigeration system is no longer operating.

S23, judging whether the single running time of the refrigerator is more than or equal to a2 (Kl Tc/b), and if so, stopping the refrigerator; if not, continuing to operate the step S23; wherein a1, a2 and b are proportionality coefficients, and a1 > a2, kl is refrigerator volume, tc is ambient temperature.

The method comprehensively considers the whole heat load of the refrigerator through the volume and the environment temperature of the refrigerator, and the running time of the refrigerator is referenced to a (Kl Tc/b), so that the temperature of the refrigerator can be more accurately and reasonably controlled; in different steps, coefficients a are represented by a1, a2 \8230; \8230andan is a natural number larger than 1.

Further, step S2 further includes: 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 c2 > c1; kl is the refrigerator volume and Tc is the ambient temperature.

The method comprehensively considers the whole heat load of the refrigerator through the volume and the ambient temperature of the refrigerator, and the shutdown time of the refrigerator is referenced by c (Kl Tc/b), so that the temperature of the refrigerator can be more accurately and reasonably controlled. In different steps, the coefficient c is expressed by c1, c2, 8230, (8230) cn, and n is a natural number larger than 1.

Further, step S2 further includes: s24, judging whether the environmental temperature is larger than or equal to T2 or not, wherein T2 is larger than T1; if yes, starting up and entering the step S25; 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.

Further, step S2 further includes: 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.

In the method, the lower the ambient temperature is, the shorter the time of single operation of the compressor is, and the longer the time of single shutdown is, so that the temperature control of the refrigerator is realized.

The invention divides the environment of the refrigerator into a plurality of temperature intervals, and sets corresponding coefficients according to different environment temperatures. In one embodiment, referring to FIG. 2, T1 is between 1 ℃ and 3 ℃ and T2 is between 8 ℃ and 12 ℃; the operation of the refrigerator can be effectively controlled at low temperature without depending on the heating wire.

The control method between two adjacent temperature intervals is similar to the control method under the temperature T1 and the temperature T2, and according to the actual condition b =100, the coefficients a and c are adjusted correspondingly according to the ambient temperature. Specific references are as follows:

when Tc is more than or equal to 20 ℃, a is between 1.0 and 1.2, and when the single running time of the refrigerator is less than A (Kl Tc/100), the refrigerator can not rapidly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the single operation time of the refrigerator is more than 1.2A (Kl Tc/100). c is between 0.3 and 0.4, and when the single stop time of the refrigerator is less than 0.3A (Kl Tc/100), the energy-saving effect of the refrigerator is poor; the refrigerator cannot rapidly achieve a cooling effect when the single stop time of the refrigerator is more than 0.4A (kltc/b).

When the Tc is more than or equal to 10 ℃ and less than 20 ℃, a is between 0.7 and 0.9, and when the single running time of the refrigerator is less than 0.7 (Kl Tc/100), the refrigerator can not rapidly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the single operation time of the refrigerator is greater than 0.9 (Kl Tc/100). c is between 0.5 and 0.7, and when the single shutdown time of the refrigerator is less than 0.5 (Kl Tc/100), the energy-saving effect of the refrigerator is poor; the refrigerator cannot rapidly achieve a cooling effect when the single stop time of the refrigerator is more than 0.7 (Kl × Tc/100).

When the Tc is more than or equal to 3 ℃ and less than 10 ℃, a is between 0.5 and 0.6, and when the single running time of the refrigerator is less than 0.5 (Kl Tc/100), the refrigerator can not quickly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the single operation time of the refrigerator is greater than 0.6 (Kl × Tc/100). c is between 1.0 and 1.5, and when the single-time shutdown time of the refrigerator is less than (Kl x Tc/100), the energy-saving effect of the refrigerator is poor; the refrigerator cannot rapidly achieve a cooling effect when the single stop time of the refrigerator is more than 1.5 (Kl × Tc/100).

When Tc is less than 3 ℃, 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 can not achieve the refrigeration effect quickly; the refrigerator has a poor energy saving effect when the single operation time of the refrigerator is greater than 0.4 (Kl × Tc/100). c is between 4 and 6, and when the single-stop time of the refrigerator is less than 4Kl Tc, the refrigerator wastes electricity; the refrigerator cannot rapidly achieve a cooling effect when the single-off time of the refrigerator is more than 6 (Kl × Tc/100).

In one embodiment, referring to fig. 2, T1 is 3 ℃, T210 is 3 ℃, and other parameters are shown in fig. 2, so that the refrigerator can be effectively controlled at low temperature without depending on the heating wire.

Referring to fig. 3, step S2 further includes: s26, judging whether the environmental temperature is more than or equal to 20 ℃; if yes, starting up and entering the step S27; if not, the step S24 is carried out; s27, judging whether the single running time of the refrigerator is more than or equal to (Kl Tc/b), and if so, stopping the refrigerator; if not, the operation continues to step S27.

Further, step S2 further includes: s27' following the step S27, judging whether the single stop time of the refrigerator is more than or equal to 0.3 (Kl Tc/b); if yes, returning to the step S1; if not, the operation continues to step S27'.

Therefore, under the usable environment temperature of the refrigerator, the starting and stopping of the refrigerating system can be controlled according to the volume of the refrigerator and the environment temperature and the running time of the refrigerator, and a temperature sensor does not need to be arranged in the refrigerating chamber. And, 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.

Referring to fig. 4 to 6, when the compressor is a dc compressor, the step S2 includes the following steps: 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 running time of the refrigerator 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 running time of the refrigerator is more than or equal to x3 (Kl Tc/y), if so, running 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.

In the method, the running frequency of the compressor is controlled through the running frequency and the running time of the compressor based on the volume of the refrigerator, and a low-temperature supplementary heating wire is not required to be arranged. And, under the same temperature, along with the extension of compressor operation total time, reduce the frequency H of compressor operation step by step, can prevent effectively that the refrigeration room from suddenly supercooling, and control more accurately.

Further, step S2 further includes the steps of: in the running process of the compressor, judging whether the single running time of the refrigerator is greater than (Kl x Tc/y), if so, returning to the step S1, otherwise, continuing running the compressor at the current frequency; further has the effects of energy saving and accurate temperature control.

Further, step S2 includes the steps of: s2f, judging whether the ambient temperature is greater than or equal to Tb, 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 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. The numerical values of x 1-x 6 and H1-H9 are related to the volume of the refrigerator and the ambient temperature, and under the condition that the volume of the refrigerator is fixed, the lower the ambient temperature is, the shorter the total operation time of the refrigerator is, the lower the operation frequency of the compressor is, and the energy-saving effect is good.

The control method between two adjacent temperature intervals is similar to the control method under the temperature of Ta and Tb, and according to the practical situation b =10, the coefficient a and the running frequency H of the compressor can be correspondingly adjusted according to the practical environment temperature. Specific references are as follows:

when Tc is more than or equal to 20 ℃, x in the total operation time 1 of the refrigerator is between 1.0 and 1.2, and when the total operation time 1 of the refrigerator is less than (Kl Tc/10), the refrigerator can not rapidly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 1 is greater than 1.2 (Kl × Tc/10). X in the total refrigerator running time 2 is between 2 and 3, and when the total refrigerator running time 2 is less than 2 (Kl Tc/10), the refrigerator cannot rapidly achieve a refrigerating effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 2 is greater than 3 (Kl Tc/10).

When Tc is more than or equal to 10 ℃ and less than 20 ℃, 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 x Tc/10), the refrigerator can not quickly achieve the refrigerating effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 1 is greater than 0.9 (Kl × Tc/10). X in the total refrigerator running time 2 is between 1.6 and 1.8, and when the total refrigerator running time 2 is less than 1.6 (Kl Tc/10), the refrigerator cannot rapidly achieve a refrigerating effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 2 is greater than 1.8 (Kl Tc/10).

When the Tc is more than or equal to 3 ℃ and less than 10 ℃, 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 can not quickly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 1 is greater than 0.7 (Kl × Tc/10). The coefficient x of the total refrigerator running time 2 is between 1.2 and 1.4; when the total refrigerator operating time 2 is less than 1.2 (Kl Tc/10), the refrigerator cannot rapidly achieve a cooling effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 2 is greater than 1.4 (Kl × Tc/10).

When Tc is less than 3 ℃, the coefficient x of the total running time 1 of the refrigerator is between 0.4 and 0.5, and when the total running time 1 of the refrigerator is less than 0.4 (Kl Tc/10), the refrigerator can not quickly achieve the refrigeration effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 1 is greater than 0.5 (Kl Tc/10). The coefficient x of the total refrigerator running time 2 is between 1.0 and 1.1, and when the total refrigerator running time 2 is less than (Kl Tc/10), the refrigerator cannot quickly achieve the refrigerating effect; the refrigerator has a poor energy saving effect when the total refrigerator operating time 2 is greater than 1.1 (Kl × Tc/10).

In an embodiment, referring to fig. 5, ta is between 1 ℃ and 3 ℃, tb is between 8 ℃ and 12 ℃, and other parameters refer to fig. 5, so that the refrigerator can still be effectively controlled to operate at low temperature without depending on the heating wire.

As shown in fig. 6, step S2 further includes the following steps: s2i, judging whether the environmental temperature is more than or equal to 20 ℃, and if so, entering a step S2j; if not, the step S2f is carried out; s2j, judging whether the total running time of the refrigerator is more than or equal to (Kl × Tc/10) min or not, if so, entering a step S2k; if not, the compressor is operated at the frequency of 100 Hz; s2k, judging whether the total running time of the refrigerator is more than or equal to 2 (Kl × Tc/10) min or not, if so, running the compressor at the frequency of 60 Hz; if not, the compressor is operated at 80 Hz.

Therefore, the running frequency of the compressor can be controlled based on the volume of the refrigerator under the usable environment temperature of the refrigerator and through the environment temperature and the running time of the refrigerator, and a temperature sensor does not need to be arranged in the refrigerating chamber. And, 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.

In conclusion, according to the control method of the refrigerator, the working state of the refrigeration system is not controlled by the refrigeration temperature any more, and the refrigeration heating wire is not required to be added, but the automatic control can be carried out according to the environmental temperature and the running time.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

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

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 ℃.