CN115077193B - Method and system for controlling temperature in refrigerator and refrigerator - Google Patents
Method and system for controlling temperature in refrigerator and refrigerator Download PDFInfo
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- CN115077193B CN115077193B CN202210758095.8A CN202210758095A CN115077193B CN 115077193 B CN115077193 B CN 115077193B CN 202210758095 A CN202210758095 A CN 202210758095A CN 115077193 B CN115077193 B CN 115077193B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
- F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention relates to a method and a system for controlling the temperature in a refrigerator and the refrigerator, wherein the method comprises the following steps: the method comprises the steps of obtaining an expected temperature value set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature value into a pre-established condition judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on the refrigerator compressor according to a judgment result of the condition judgment formula. The actual temperature values of different indoor areas of the refrigerator to be controlled are obtained, single-point acquisition is avoided, the expected temperature value and the actual temperature value are subjected to multistage judgment according to a plurality of preset condition judgment formulas, and compared with the prior art, the acquired temperature in the refrigerator is simply compared with the preset temperature, the scheme in the application is higher in accuracy, and the control strategy corresponding to different judgment results is provided, so that the diversified control strategy enables the temperature control effect to be better.
Description
Technical Field
The invention relates to the field of refrigerator temperature control, in particular to a method and a system for controlling the temperature in a refrigerator and the refrigerator.
Background
The rapid development of household electrical appliances makes the refrigerator enter into thousands of families, and along with the development of technology, the refrigerator is gradually developed to the aspects of intelligence, high-precision temperature control, humanization and the like while meeting the daily freezing and food storage requirements of users.
In daily life, the refrigerator refrigerating chamber often has the phenomenon that the food materials on the lower layer of the chamber are frozen and damaged and the food materials on the upper layer of the chamber are deteriorated. This is because the air density of the cool air is higher than that of the hot air, and when the cool air is transferred from the freezing chamber to the refrigerating chamber, the cool air is sunk, and the hot air in the refrigerating chamber is moved upward, so that the temperature of the compartment of the refrigerating chamber is higher or lower, that is, the lower temperature of the refrigerating chamber is lower than the user-set temperature, and the upper temperature is higher than the user-set temperature.
In the temperature control method in the refrigerator aiming at the problems in the prior art, the temperature in the refrigerating chamber of the refrigerator is generally collected through a single temperature sensor or a plurality of temperature sensors, the collected temperature is simply compared with a preset temperature, and finally the refrigerating equipment of the refrigerator is controlled to increase or decrease the refrigerating power according to the comparison result.
Disclosure of Invention
In view of the above, the invention aims to provide a method and a system for controlling the temperature in a refrigerator and the refrigerator, so as to solve the problem that the temperature control effect is poor due to the lack of rigor of the temperature control thought of the method for controlling the temperature in the refrigerator in the prior art.
According to a first aspect of an embodiment of the present invention, there is provided a method for controlling temperature in a refrigerator, including:
acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multistage judgment;
and executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula.
Preferably, the acquiring the actual temperature values of different areas in the refrigerator includes:
determining the temperature distribution in the compartment to be controlled;
dividing the compartment to be controlled into at least two areas according to the temperature distribution in the compartment to be controlled;
acquiring actual temperature values of different areas in the compartment to be controlled; the actual temperature value includes at least: a first actual temperature value and a second actual temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment includes:
and judging whether the expected temperature value is not smaller than a first preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the expected temperature value is not smaller than the first preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not smaller than the second preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the difference between the first actual temperature value and the expected temperature value is smaller than the second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the difference between the expected temperature value and the second actual temperature value is smaller than the third preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the expected temperature value is smaller than the first preset temperature value, judging whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the difference between the expected temperature value and the second preset temperature value is smaller than the fourth preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the difference between the first actual temperature value and the expected temperature value is smaller than the fifth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment further includes:
if the average value of the first actual temperature value and the second actual temperature value is smaller than the sum of the expected temperature value and the fourth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula includes:
and if the difference between the first actual temperature value and the expected temperature value is not smaller than the second preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula further includes:
and if the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula further includes:
and if the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value, controlling the refrigerator compressor to maintain the current gear.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula further includes:
and if the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula further includes:
and if the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula further includes:
if the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled;
and if the average value of the first actual temperature value and the second actual temperature value is larger than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to maintain the current gear.
Preferably, after the control of the gear lifting of the refrigerator compressor, the method further comprises:
judging whether the difference between the first actual temperature value and the expected temperature value is not less than a positive integer multiple of 2;
if the difference between the first actual temperature value and the expected temperature value is not smaller than the positive integer multiple of 2, controlling the refrigerator compressor gear to be lifted again based on the ratio of the difference between the first actual temperature value and the expected temperature value to 2.
Preferably, if the difference between the first actual temperature value and the expected temperature value is less than a positive integer multiple of 2, the refrigerator compressor is controlled to maintain the current gear.
Preferably, the value of the first preset temperature value is the middle value of the temperature interval of the expected temperature value;
the second preset temperature value can be equal to the third preset temperature value;
the values of the second preset temperature value and the third preset temperature value are larger than those of the fifth preset temperature value;
the fifth preset temperature value is greater than the fourth preset temperature value.
Preferably, the method further comprises: and acquiring and displaying the current gear information of the refrigerator compressor.
According to a second aspect of an embodiment of the present invention, there is provided a refrigerator including:
at least two temperature sensors;
the refrigerator comprises a refrigerator compressor, a communication module, a processor and a memory;
the temperature sensors are arranged in different areas in a compartment to be controlled of the refrigerator;
program instructions are stored in the memory;
the processor is configured to execute program instructions stored in the memory to perform the method of any one of the preceding claims.
Preferably, the temperature sensors are respectively arranged at the top and the bottom of the compartment to be controlled.
According to a third aspect of an embodiment of the present invention, there is provided an in-refrigerator temperature control system, including:
the acquisition module is used for acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
the judging module is used for substituting the expected temperature value and the actual temperature value into a pre-constructed condition judging formula to carry out multi-stage judgment;
and the execution module is used for executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula.
The technical scheme provided by the embodiment of the invention can comprise the following beneficial effects: the method for controlling the temperature in the refrigerator comprises the following steps: the method comprises the steps of obtaining an expected temperature value set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature value into a pre-established condition judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on the refrigerator compressor according to a judgment result of the condition judgment formula. The actual temperature values of different indoor areas of the refrigerator to be controlled are obtained, single-point acquisition is avoided, the expected temperature value and the actual temperature value are subjected to multistage judgment according to a plurality of preset condition judgment formulas, and compared with the prior art, the acquired temperature in the refrigerator is simply compared with the preset temperature, the scheme in the application is higher in accuracy, and the control strategy corresponding to different judgment results is provided, so that the diversified control strategy enables the temperature control effect to be better.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart illustrating a method of controlling temperature in a refrigerator according to an exemplary embodiment;
fig. 2 is a flowchart illustrating a multi-stage judgment of a condition judgment formula in a temperature control method in a refrigerator according to an exemplary embodiment;
fig. 3 is a schematic view illustrating a structure of a refrigerator according to an exemplary embodiment;
fig. 4 is a schematic block diagram illustrating an in-refrigerator temperature control system according to an exemplary embodiment.
Reference numerals: a temperature sensor-21; refrigerator compressor-22; a communication module-23; a processor-24; a memory-25; an acquisition module-31; a judgment module-32; executing module-33.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
Example 1
Fig. 1 is a flowchart illustrating a method of controlling temperature in a refrigerator according to an exemplary embodiment, as shown in fig. 1, the method including:
s1, acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
s2, substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multistage judgment;
and S3, executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula.
It should be noted that the technical solution provided in this embodiment is applicable to the temperature control process in the refrigerator compartment.
In specific practice, taking the compartment to be controlled as the refrigerating chamber as an example, the set temperature gear of the refrigerating chamber is usually 2-8 ℃, the 2 ℃ and 8 ℃ are the lower limit temperature and the upper limit temperature selectable by the user, the user generally sets the expected temperature value according to the sensory judgment, and the actual temperature in the refrigerating chamber may not meet the expectation of the user due to the characteristic that the temperature in the refrigerating chamber is sequentially reduced from top to bottom, for example, the lower temperature of the refrigerating chamber is lower than the set temperature of the user, and the upper temperature is higher than the set temperature of the user, at this time, the temperature in the refrigerating chamber needs to be adjusted according to the technical scheme in the embodiment, so that the overall temperature in the refrigerating chamber meets the expectation of the user, and the phenomena that the lower food material of the refrigerating chamber is frozen and the food material on the upper shelf is deteriorated are avoided.
It should be noted that, obtaining actual temperature values of different areas in the refrigerator includes:
determining the temperature distribution in a room to be controlled; dividing the compartment to be controlled into at least two areas according to the temperature distribution in the compartment to be controlled; acquiring actual temperature values of different areas in a room to be controlled; the actual temperature values include at least: a first actual temperature value and a second actual temperature value.
It is common in the prior art to obtain a temperature value in a refrigerator as an actual temperature value in the refrigerator by a single temperature sensor. But a single temperature sensor can only acquire the temperature at a certain location of the compartment and cannot represent the average temperature of the whole compartment.
In specific practice, taking the compartment to be controlled as the refrigerating chamber as an example, the temperature distribution in the refrigerating chamber generally decreases from top to bottom, and in this embodiment, the refrigerating chamber may be divided into an upper area and a lower area, the actual temperature values of the upper area and the lower area of the refrigerating chamber may be obtained respectively, the actual temperature value of the upper half area of the refrigerating chamber may be taken as a first actual temperature value, and the actual temperature value of the lower half area of the refrigerating chamber may be taken as a second actual temperature value.
Referring to fig. 2, substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment includes:
firstly, judging whether the expected temperature value is not smaller than a first preset temperature value, and executing two different subsequent branch condition judgment formulas according to the judgment result, wherein the judgment formulas are as follows:
if the expected temperature value is not less than the first preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not less than the second preset temperature value;
if the difference between the first actual temperature value and the expected temperature value is smaller than the second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value or not;
if the difference between the expected temperature value and the second actual temperature value is smaller than the third preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
If the expected temperature value is smaller than the first preset temperature value, judging whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value;
if the difference between the expected temperature value and the second preset temperature value is smaller than the fourth preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value or not;
if the difference between the first actual temperature value and the expected temperature value is smaller than the fifth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
And finally, if the average value of the first actual temperature value and the second actual temperature value is smaller than the sum of the expected temperature value and the fourth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value.
Correspondingly, according to the judging result of the condition judging formula, executing a corresponding control strategy for the refrigerator compressor, wherein the control strategy comprises the following steps:
if the difference between the first actual temperature value and the expected temperature value is not smaller than the second preset temperature value, controlling the gear of the refrigerator compressor to be lifted;
if the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled;
if the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value, controlling the refrigerator compressor to maintain the current gear;
if the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled;
if the average value of the first actual temperature value and the second actual temperature value is larger than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to maintain the current gear;
if the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled;
and if the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
The refrigerator compressor gear refers to a rotation speed gear of the refrigerator compressor, rotation speeds of different gears of the refrigerator compressor are different, and the refrigerator compressor gear is lifted, namely the rotation speed of the refrigerator compressor is lifted.
In fig. 2, T denotes an expected temperature value, T1 denotes a first actual temperature value, T2 denotes a second actual temperature value, and a to f respectively denote first to fifth preset temperature values. For convenience of explanation, the expected temperature value, the first actual temperature value, the second actual temperature value, and the first to fifth preset temperature values are referred to below by T pre-set, T1, T2, and a to f, respectively.
It should be noted that, the value of the first preset temperature value is the intermediate value of the temperature interval of the expected temperature value; the second preset temperature value can be equal to the third preset temperature value; the values of the second preset temperature value and the third preset temperature value are larger than those of the fifth preset temperature value; the fifth preset temperature value is greater than the fourth preset temperature value.
In specific practice, taking a to-be-controlled room as a refrigerating room as an example, wherein the set temperature gear of the refrigerating room is usually 2-8 ℃, and the T pre-fetching value interval is 2-8 ℃; and a is a middle value of a temperature interval of T pre-available values, and a is 5 ℃. Preferably, b can take a value of 2.5-3.5 ℃, and most preferably 3 ℃; c can take a value of 2.5-3.5 ℃ and optimally takes a value of 3 ℃; d can take a value of 0.5-1 ℃ and optimally takes a value of 0.5 ℃; f can take a value of 1.5-2.5 ℃, and optimally takes a value of 1.5 ℃. It can be understood that the values can be adjusted according to practical situations.
In this embodiment, it is first determined whether or not Tpre.gtoreq.a is satisfied, in order to determine the upper and lower limits of Tpre. Because the value of a is the middle value of the temperature interval of the Tpre-available value, when Tpre is more than or equal to a, the Tpre is the upper limit temperature, and when Tpre is less than a, the Tpre is the lower limit temperature. In this embodiment, the upper and lower limits of the T pre-set are determined first, and then the subsequent conditional determination formula is executed on T1 and T2 according to the upper and lower limits of the T pre-set.
If T is not less than a, judging whether T1-T is not less than b is met, and if T1-T is not less than b is met, the acceptable value of b is 2.5-3.5 ℃, and if T1-T is not less than b is met, the temperature in the refrigerating chamber is higher at the moment, and cooling is required, so that the gear of the refrigerator compressor is controlled to be lifted at the moment; if T1-T is less than b, the corresponding control strategy is determined by the subsequent condition judgment formula.
If T1-T is smaller than b, judging whether T pre-T2 is larger than or equal to c, and if T pre-T2 is larger than or equal to c, judging that the temperature of the refrigerating chamber is lower at the moment, and controlling the refrigerator compressor to stop refrigerating the refrigerating chamber at the moment because the c can take a value of 2.5-3.5 ℃; if Tpre-T2 is less than c, the corresponding control strategy is determined by a subsequent conditional judgment formula. It can be understood that in this step, whether T pre-T2 c is equal to or greater than c is determined to be too low in order to determine whether T2 is too low, where T2 is too low indicates that cold air in the lower half area of the refrigerating chamber gathers and sinks, which may cause freezing of food materials at this time, and in order to prevent T2 from being too low, it is necessary to control the refrigerator compressor to stop refrigerating in the refrigerating chamber when T pre-T2 c is equal to or greater than c.
If Tpre-T2 is less than c, judging whether (T1+T2)/2 is more than or equal to Tpre+d is true, and if (T1+T2)/2 is more than or equal to Tpre+d, proving that the whole temperature of the refrigerating chamber can meet the expectations of users at the moment, and controlling the refrigerator compressor to maintain the current gear at the moment; if (T1+T2)/2 is less than Tpre+d, the corresponding control strategy is determined by the subsequent condition judgment formula.
If (T1+T2)/2 is less than Tpre+d, judging whether (T1+T2)/2 is less than or equal to Tpre-f is met, and if (T1+T2)/2 is less than or equal to Tpre-f, the whole temperature of the refrigerating chamber is lower, so that the refrigerator compressor is controlled to stop refrigerating the refrigerating chamber; if (T1+T2)/2 is more than Tpre-f, the whole temperature of the refrigerating chamber can meet the expectations of users, and the refrigerator compressor is controlled to maintain the current gear.
If Tpre is less than a, judging whether Tpre-T2 is more than or equal to d, and if the d is more than or equal to d, judging that the temperature of the refrigerating chamber is lower because the d is 0.5-1 ℃, and controlling the refrigerator compressor to stop refrigerating the refrigerating chamber; if Tpre-T2 is less than d, the corresponding control strategy is determined by a subsequent conditional judgment formula. It can be understood that in this step, whether T pre-T2 d is equal to or greater than d is determined to be too low in order to determine whether T2 is too low, where T2 is too low indicates that cold air in the lower half area of the refrigerating chamber gathers and sinks, which may cause freezing of food materials at this time, and in order to prevent T2 from being too low, it is necessary to control the refrigerator compressor to stop refrigerating in the refrigerating chamber when T pre-T2 d is equal to or greater than d.
If T pre-T2 is less than d, judging whether T1-T pre-is more than or equal to f or not, and if T1-T pre-is more than or equal to f, proving that the temperature in the refrigerating chamber is higher at the moment, and cooling is required, so that the gear of the refrigerator compressor is controlled to be lifted at the moment; if T1-T is less than f, the corresponding control strategy is determined by the subsequent condition judgment formula.
If T1-T is less than f, judging whether (T1+T2)/2 is more than or equal to Tpre+d is true, and if the d can take a value of 0.5-1 ℃, if (T1+T2)/2 is more than or equal to Tpre+d, proving that the whole temperature of the refrigerating chamber can meet the expectations of users at the moment, and controlling the refrigerator compressor to maintain the current gear at the moment; if (T1+T2)/2 is less than Tpre+d, the corresponding control strategy is determined by the subsequent condition judgment formula.
If (T1+T2)/2 is less than Tpre+d, judging whether (T1+T2)/2 is less than or equal to Tpre-f is met, and if (T1+T2)/2 is less than or equal to Tpre-f, the whole temperature of the refrigerating chamber is lower, so that the refrigerator compressor is controlled to stop refrigerating the refrigerating chamber; if (T1+T2)/2 is more than Tpre-f, the whole temperature of the refrigerating chamber can meet the expectations of users, and the refrigerator compressor is controlled to maintain the current gear.
It should be noted that, after the control of the gear lifting of the refrigerator compressor, the method further includes:
judging whether the difference between the first actual temperature value and the expected temperature value is not less than a positive integer multiple of 2;
if the difference between the first actual temperature value and the expected temperature value is not smaller than the positive integer multiple of 2, controlling the refrigerator compressor gear to be lifted again based on the ratio of the difference between the first actual temperature value and the expected temperature value to 2.
And if the difference between the first actual temperature value and the expected temperature value is smaller than the positive integer multiple of 2, controlling the refrigerator compressor to maintain the current gear.
In specific practice, the control of the gear lifting of the refrigerator compressor can be to make the rotation speed of the compressor operate in one gear above the original gear. Specifically, the rotation speed ratio F (n) of the compressor up-shift to the current shift satisfies the first-order function:
since n is 1 at this time, the rotation speed ratio of the compressor up-shift position to the current shift position is 5/4.
In this embodiment, it is determined whether T1-T is equal to or greater than 2N (N is 1, 2, 3..n+) is satisfied, and if T1-T is equal to or greater than 2N, it is proved that after the compressor is shifted up by one gear, the temperature in the refrigerating chamber is still higher, cooling is required, and at this time, the one gear cannot meet the cooling requirement, and jump gear lifting is required directly. Specifically, in this embodiment, the result of T1-T pre/2 is rounded, that is, the gear of the refrigerator compressor is controlled to be lifted again based on the value of n at this time. In specific practice, the compressor speed up n-speed operation satisfies the step function:
wherein n epsilon [1,8] represents that the highest rotation speed gear of the compressor is 9, and the value range of n can be adjusted according to the actual gear condition of the compressor in specific implementation.
If T1-T is less than 2n, after the compressor is proved to be lifted by one gear, the temperature of the refrigerating chamber can meet the expectations of users, and the refrigerator compressor is controlled to maintain the current gear.
It should be noted that, in this embodiment, the current gear information of the refrigerator compressor may also be obtained and displayed, so that the user may intuitively understand the current power situation of the refrigerator.
It can be appreciated that the method for controlling the temperature in the refrigerator provided in this embodiment includes: the method comprises the steps of obtaining an expected temperature value set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature value into a pre-established condition judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on the refrigerator compressor according to a judgment result of the condition judgment formula. In this embodiment, acquiring the actual temperature values of different areas in the compartment of the refrigerator to be controlled avoids the single-point acquisition inaccuracy, and the expected temperature value and the actual temperature value are subjected to multistage judgment according to a plurality of preset condition judgment formulas, so that compared with the prior art, only the acquired temperature in the refrigerator is simply compared with the preset temperature, the scheme in this embodiment has higher rigor, and has corresponding control strategies aiming at different judgment results, and the diversified control strategies enable the temperature control effect to be better.
Example two
Fig. 3 is a schematic structural view of a refrigerator according to an exemplary embodiment, and as shown in fig. 3, the refrigerator includes:
at least two temperature sensors 21;
a refrigerator compressor 22, a communication module 23, a processor 24 and a memory 25;
wherein the temperature sensor 22 is disposed at different areas within the refrigerator;
the memory 25 has stored therein program instructions;
the processor 24 is configured to execute program instructions stored in the memory to perform the method of controlling the temperature in the refrigerator as in the above embodiment.
In specific practice, two temperature sensors 21 may be respectively disposed at the top and bottom of the refrigerator refrigerating chamber, specifically, an upper temperature sensor is installed at a position 5cm away from the upper edge of the refrigerating fan housing, a lower temperature sensor is installed at a position 5cm above the lowest shelf of the refrigerating chamber, and in specific implementation, the setting position of the temperature sensors 21 may be adjusted according to the design volume size and the air duct structure of the refrigerator refrigerating chamber. It will be appreciated that in this embodiment, at least two temperature sensors 21 are disposed at the top and bottom of the refrigerator compartment to obtain actual temperature values at the top and bottom of the refrigerator compartment, thereby avoiding the inaccuracy of temperature single point collection.
Example III
Fig. 4 is a schematic block diagram illustrating an in-refrigerator temperature control system according to an exemplary embodiment, and as shown in fig. 4, the in-refrigerator temperature control system includes:
the obtaining module 31 is configured to obtain an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
the judging module 32 is configured to perform multi-level judgment by substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula;
and the execution module 33 is configured to execute a corresponding control strategy for the refrigerator compressor according to the judgment result of the condition judgment formula.
It can be appreciated that the temperature control system in a refrigerator provided in this embodiment includes: an acquisition module 31, a judgment module 32 and an execution module 33. In practice, the acquiring module 31 acquires the expected temperature value currently set by the user and the actual temperature value of different areas in the compartment to be controlled of the refrigerator, the judging module 32 substitutes the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to perform multi-stage judgment, and the executing module 33 executes the corresponding control strategy for the refrigerator compressor according to the judgment result of the condition judgment formula. In this embodiment, acquiring the actual temperature values of different areas in the compartment of the refrigerator to be controlled avoids the single-point acquisition inaccuracy, and the expected temperature value and the actual temperature value are subjected to multistage judgment according to a plurality of preset condition judgment formulas, so that compared with the prior art, only the acquired temperature in the refrigerator is simply compared with the preset temperature, the scheme in this embodiment has higher rigor, and has corresponding control strategies aiming at different judgment results, and the diversified control strategies enable the temperature control effect to be better.
It should be noted that, the temperature control system in the refrigerator further includes: a power display module; the power display module is used for acquiring and displaying the current gear information of the refrigerator compressor.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (18)
1. A method for controlling temperature in a refrigerator, comprising:
acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multistage judgment;
executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula;
substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multistage judgment, wherein the method comprises the following steps of:
judging whether the expected temperature value is not smaller than a first preset temperature value, and executing two different subsequent branch condition judgment formulas according to the judgment result;
if the expected temperature value is not less than the first preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not less than the second preset temperature value;
if the expected temperature value is smaller than the first preset temperature value, judging whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value;
executing a corresponding control strategy for the refrigerator compressor, comprising:
if the difference between the first actual temperature value and the expected temperature value is not smaller than the second preset temperature value, controlling the gear of the refrigerator compressor to be lifted;
and if the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
2. The method of claim 1, wherein the obtaining actual temperature values for different areas within the refrigerator comprises:
determining the temperature distribution in the compartment to be controlled;
dividing the compartment to be controlled into at least two areas according to the temperature distribution in the compartment to be controlled;
acquiring actual temperature values of different areas in the compartment to be controlled; the actual temperature value includes at least: a first actual temperature value and a second actual temperature value.
3. The method of claim 1, wherein substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula for multi-stage judgment further comprises:
if the difference between the first actual temperature value and the expected temperature value is smaller than the second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value.
4. The method of claim 3, wherein said substituting said expected temperature value and said actual temperature value into a pre-constructed conditional decision formula for multi-level decision further comprises:
if the difference between the expected temperature value and the second actual temperature value is smaller than the third preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
5. The method of claim 1, wherein substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula for multi-stage judgment further comprises:
if the difference between the expected temperature value and the second preset temperature value is smaller than the fourth preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value.
6. The method of claim 5, wherein substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula for multi-stage judgment, further comprises:
if the difference between the first actual temperature value and the expected temperature value is smaller than the fifth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value.
7. The method according to any one of claims 4 or 6, wherein said substituting the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula for multi-stage judgment, further comprises:
if the average value of the first actual temperature value and the second actual temperature value is smaller than the sum of the expected temperature value and the fourth preset temperature value, judging whether the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value.
8. The method of claim 3, wherein the executing the corresponding control strategy for the refrigerator compressor according to the determination result of the condition determination formula further comprises:
and if the difference between the expected temperature value and the second actual temperature value is not smaller than the third preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
9. The method according to claim 4 or 6, wherein the performing a corresponding control strategy for the refrigerator compressor according to the determination result of the condition determination formula further comprises:
and if the average value of the first actual temperature value and the second actual temperature value is not smaller than the sum of the expected temperature value and the fourth preset temperature value, controlling the refrigerator compressor to maintain the current gear.
10. The method of claim 5, wherein the executing the corresponding control strategy for the refrigerator compressor according to the determination result of the condition determination formula further comprises:
and if the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
11. The method of claim 6, wherein the executing the corresponding control strategy for the refrigerator compressor according to the determination result of the condition determination formula further comprises:
if the average value of the first actual temperature value and the second actual temperature value is not greater than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled;
and if the average value of the first actual temperature value and the second actual temperature value is larger than the difference between the expected temperature value and the fifth preset temperature value, controlling the refrigerator compressor to maintain the current gear.
12. The method of claim 1 or 10, wherein after controlling the refrigerator compressor gear lift, the method further comprises:
judging whether the difference between the first actual temperature value and the expected temperature value is not less than a positive integer multiple of 2;
if the difference between the first actual temperature value and the expected temperature value is not smaller than the positive integer multiple of 2, controlling the refrigerator compressor gear to be lifted again based on the ratio of the difference between the first actual temperature value and the expected temperature value to 2.
13. The method of claim 12, wherein the refrigerator compressor is controlled to maintain the current gear if the difference between the first actual temperature value and the expected temperature value is less than a positive integer multiple of 2.
14. The method of claim 7, wherein the first predetermined temperature value is a median of the temperature intervals of the expected temperature values;
the second preset temperature value can be equal to the third preset temperature value;
the values of the second preset temperature value and the third preset temperature value are larger than those of the fifth preset temperature value;
the fifth preset temperature value is greater than the fourth preset temperature value.
15. The method according to any one of claims 1 to 6, further comprising: and acquiring and displaying the current gear information of the refrigerator compressor.
16. A refrigerator, comprising:
at least two temperature sensors;
the refrigerator comprises a refrigerator compressor, a communication module, a processor and a memory;
the temperature sensors are arranged in different areas in a compartment to be controlled of the refrigerator;
program instructions are stored in the memory;
the processor is configured to execute program instructions stored in a memory and to perform the method of any one of claims 1 to 15.
17. The refrigerator of claim 16, wherein the temperature sensors are disposed at top and bottom of the compartment to be controlled, respectively.
18. A temperature control system in a refrigerator, comprising:
the acquisition module is used for acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a compartment to be controlled of the refrigerator;
the judging module is used for substituting the expected temperature value and the actual temperature value into a pre-constructed condition judging formula to carry out multi-stage judgment;
the execution module is used for executing a corresponding control strategy for the refrigerator compressor according to the judging result of the condition judging formula;
wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to perform multi-stage judgment comprises the following steps:
judging whether the expected temperature value is not smaller than a first preset temperature value, and executing two different subsequent branch condition judgment formulas according to the judgment result;
if the expected temperature value is not less than the first preset temperature value, judging whether the difference between the first actual temperature value and the expected temperature value is not less than the second preset temperature value;
if the expected temperature value is smaller than the first preset temperature value, judging whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value;
the executing of the corresponding control strategy for the refrigerator compressor comprises:
if the difference between the first actual temperature value and the expected temperature value is not smaller than the second preset temperature value, controlling the gear of the refrigerator compressor to be lifted;
and if the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
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| CN1151512A (en) * | 1995-10-18 | 1997-06-11 | Lg电子株式会社 | Device and method for controlling temperature of refrigerating chamber in refrigerator |
| CN1384322A (en) * | 2001-05-08 | 2002-12-11 | Lg电子株式会社 | Control method of refrigerator with two evaporators |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103604276B (en) * | 2013-12-05 | 2016-03-30 | 合肥美的电冰箱有限公司 | Refrigerator and temperature control equipment and temperature-controlled process |
| CN105043004B (en) * | 2015-06-04 | 2017-03-29 | 合肥美的电冰箱有限公司 | Refrigerator temperature control method, controller and refrigerator |
| CN105928316B (en) * | 2016-04-29 | 2019-01-29 | 合肥华凌股份有限公司 | A kind of frequency-changeable compressor control method, control system and refrigerator |
| CN109883132A (en) * | 2019-01-28 | 2019-06-14 | 珠海格力电器股份有限公司 | A kind of controlling method for refrigerator, device, storage medium and refrigerator |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151512A (en) * | 1995-10-18 | 1997-06-11 | Lg电子株式会社 | Device and method for controlling temperature of refrigerating chamber in refrigerator |
| CN1384322A (en) * | 2001-05-08 | 2002-12-11 | Lg电子株式会社 | Control method of refrigerator with two evaporators |
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