CN115077193A - 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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- CN115077193A CN115077193A CN202210758095.8A CN202210758095A CN115077193A CN 115077193 A CN115077193 A CN 115077193A CN 202210758095 A CN202210758095 A CN 202210758095A CN 115077193 A CN115077193 A CN 115077193A
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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
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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 currently set by a user and actual temperature values of different areas in a chamber to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature values into a pre-constructed conditional judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on a compressor of the refrigerator according to a judgment result of the conditional judgment formula. The method has the advantages that the nonstructness of single-point acquisition is avoided by acquiring the actual temperature values of different regions in the refrigerator room to be controlled, multistage judgment is carried out on the expected temperature value and the actual temperature value through a plurality of condition judgment formulas which are constructed in advance, compared with the prior art that the temperature in the refrigerator and the preset temperature are simply compared, the rigidness of the scheme in the application is higher, corresponding control strategies are provided according to different judgment results, and the temperature control effect is better due to diversified control strategies.
Description
Technical Field
The invention relates to the field of refrigerator temperature control, in particular to a method and a system for controlling temperature in a refrigerator and the refrigerator.
Background
The rapid development of household appliances enables the refrigerator to enter thousands of households, and along with the development of science and technology, the refrigerator can meet the daily freezing and food storage requirements of users and gradually develop towards the aspects of intellectualization, high-precision temperature control, humanization and the like.
In daily life, the phenomenon that food materials on the lower layer of a compartment are frozen and damaged and food materials on a shelf on the upper layer of the compartment are deteriorated often occurs in a refrigerating chamber of a refrigerator. This is because the density of the cold air is higher than that of the hot air, and when the cold quantity is transferred from the freezing chamber to the refrigerating chamber, the cold quantity will sink, and the hot air in the refrigerating chamber will move upward, so that the temperature of the refrigerating chamber will be higher or lower, that is, the lower temperature of the refrigerating chamber is lower than the temperature set by the user, and the upper temperature is higher than the temperature set by the user.
In the method for controlling the temperature in the refrigerator in the prior art, generally, the temperature in the refrigerating chamber of the refrigerator is collected by a single or a plurality of temperature sensors, the collected temperature is simply compared with the 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 present invention provides a method and a system for controlling a temperature in a refrigerator, and a refrigerator, so as to solve the problem in the prior art that a temperature control effect is poor due to a single temperature control idea and lack of rigor.
According to a first aspect of embodiments of the present invention, there is provided an in-refrigerator temperature control method including:
acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a chamber 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 multi-stage judgment;
and executing a corresponding control strategy on the refrigerator compressor according to the judgment result of the condition judgment formula.
Preferably, the acquiring actual temperature values of different areas in the refrigerator includes:
determining the temperature distribution in the room to be controlled;
dividing the room to be controlled into at least two areas according to the temperature distribution in the room to be controlled;
acquiring actual temperature values of different areas in the room to be controlled; the actual temperature values include 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 decision formula for performing a multi-stage decision includes:
and judging whether the expected temperature value is not less than a first preset temperature value or not.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform a multi-stage decision further includes:
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 a second preset temperature value.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform a multi-stage decision further includes:
if the difference between the first actual temperature value and the expected temperature value is less than the second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not less than a 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 a third preset temperature value, 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 a fourth preset temperature value is judged.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform a multi-stage decision further includes:
if the expected temperature value is smaller than the first preset temperature value, whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value or not is judged.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform a multi-stage decision further includes:
if the difference between the expected temperature value and the second preset temperature value is smaller than the fourth preset temperature value, whether the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value is judged.
Preferably, the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform a multi-stage decision further includes:
and 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 decision formula to perform a multi-stage decision 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, whether the average value of the first actual temperature value and the second actual temperature value is not larger than the difference between the expected temperature value and the fifth preset temperature value is judged.
Preferably, the executing a corresponding control strategy for the refrigerator compressor according to the judgment result of the conditional judgment formula includes:
and if the difference between the first actual temperature value and the expected temperature value is not less 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 judgment result of the conditional judgment formula further includes:
and if the difference between the expected temperature value and the second actual temperature value is not less 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 judgment result of the conditional judgment formula further includes:
and if the average value of the first actual temperature value and the second actual temperature value is not less 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 judgment result of the conditional judgment formula further includes:
and if the difference between the expected temperature value and the second preset temperature value is not less 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 judgment result of the conditional judgment formula further includes:
and if the difference between the first actual temperature value and the expected temperature value is not less 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 judgment result of the conditional judgment formula further includes:
if the mean 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 a fifth preset temperature value, controlling a 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 greater than the difference between the expected temperature value and a fifth preset temperature value, controlling the compressor of the refrigerator to maintain the current gear.
Preferably, after the controlling the refrigerator compressor to shift up, 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;
and if the difference between the first actual temperature value and the expected temperature value is not less than a positive integer multiple of 2, controlling the gear of the refrigerator compressor 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 with the expected value of the expected temperature value;
the temperature interval of the second preset temperature value is equal to the temperature interval of the third preset temperature value;
the values of the second preset temperature value and the third preset temperature value are greater than the value of the fifth preset temperature value;
the value of the fifth preset temperature value is larger than that of 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 room to be controlled of the refrigerator;
the memory has stored therein program instructions;
the processor is configured to execute program instructions stored in the memory to perform the method of any of the above.
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, 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 the room to be controlled of the refrigerator;
the judgment module is used for substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multi-stage judgment;
and the execution module is used for executing a corresponding control strategy on the refrigerator compressor according to the judgment result of the condition judgment formula.
The technical scheme provided by the embodiment of the invention can have 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 currently set by a user and actual temperature values of different areas in a chamber to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature values into a pre-constructed conditional judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on a compressor of the refrigerator according to a judgment result of the conditional judgment formula. The method has the advantages that the nonstructness of single-point acquisition is avoided by acquiring the actual temperature values of different regions in the refrigerator room to be controlled, multistage judgment is carried out on the expected temperature value and the actual temperature value through a plurality of condition judgment formulas which are constructed in advance, compared with the prior art that the temperature in the refrigerator and the preset temperature are simply compared, the rigidness of the scheme in the application is higher, corresponding control strategies are provided according to different judgment results, and the temperature control effect is better due to diversified control strategies.
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 present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart illustrating an in-refrigerator temperature control method according to an exemplary embodiment;
fig. 2 is a flowchart illustrating a multi-stage judgment by a condition judgment equation in a method for controlling a temperature in a refrigerator according to an exemplary embodiment;
fig. 3 is a schematic structural view illustrating 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; -a refrigerator compressor-22; a communication module-23; a processor-24; a memory-25; an acquisition module-31; a judgment module-32; the module-33 is executed.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Example one
Fig. 1 is a flowchart illustrating an in-refrigerator temperature control method according to an exemplary embodiment, as shown in fig. 1, the method including:
step S1, obtaining the expected temperature value currently set by the user and the actual temperature values of different areas in the compartment to be controlled of the refrigerator;
step S2, substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multi-level judgment;
and step S3, executing a corresponding control strategy for the refrigerator compressor according to the judgment result of the condition judgment 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 a compartment to be controlled as a refrigerating chamber as an example, a set temperature range of the refrigerating chamber is 2-8 ℃, and 2 ℃ and 8 ℃ are a lower limit temperature and an upper limit temperature selectable by a user, the user generally sets an expected temperature value according to sensory judgment, and due to the characteristic that the temperature in the refrigerating chamber is sequentially reduced from top to bottom, the actual temperature in the refrigerating chamber may not meet the expectation of the user, if the lower layer temperature of the refrigerating chamber is lower than the set temperature of the user, and the upper layer temperature of the refrigerating chamber is higher than the set temperature of the user, 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 food materials on the lower layer of the refrigerating chamber are frozen and food materials on a shelf on the upper layer are deteriorated are avoided.
It should be noted that, acquiring actual temperature values of different areas in the refrigerator includes:
determining the temperature distribution in a room to be controlled; dividing the room to be controlled into at least two areas according to the temperature distribution in the room 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.
In the prior art, a single temperature sensor is generally used for acquiring a temperature value in the refrigerator as an actual temperature value in the refrigerator. However, a single temperature sensor can only capture the temperature at a certain location of the compartment and not represent the average temperature of the entire compartment.
In specific practice, taking a compartment to be controlled as a refrigerating chamber as an example, the temperature distribution in the refrigerating chamber is generally reduced from top to bottom in sequence, in this embodiment, the refrigerating chamber can be divided into an upper area and a lower area, actual temperature values of the upper area and the lower area of the refrigerating chamber are respectively obtained, the actual temperature value of the upper half area of the refrigerating chamber is used as a first actual temperature value, and the actual temperature value of the lower half area of the refrigerating chamber is used as a second actual temperature value.
It should be noted that, referring to fig. 2, substituting the expected temperature value and the actual temperature value into a pre-constructed conditional decision formula to perform multi-stage decision includes:
firstly, judging whether the expected temperature value is not less 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 a second preset temperature value;
if the difference between the first actual temperature value and the expected temperature value is smaller than a second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not smaller than a third preset temperature value;
if the difference between the expected temperature value and the second actual temperature value is smaller than a third preset temperature value, 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 a fourth preset temperature value is judged.
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 a 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;
if the difference between the first actual temperature value and the expected temperature value is smaller than a fifth preset temperature value, 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 is judged.
And finally, if the mean 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 mean value of the first actual temperature value and the second actual temperature value is not larger than the difference between the expected temperature value and the fifth preset temperature value.
Correspondingly, according to the judgment result of the condition judgment formula, executing a corresponding control strategy on the refrigerator compressor, comprising:
if the difference between the first actual temperature value and the expected temperature value is not less than a 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 less than a 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 less 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 mean 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 a fifth preset temperature value, controlling a 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 a 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 less than the fourth preset temperature value, controlling the compressor of the refrigerator 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 less than a fifth preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
It should be noted that the refrigerator compressor gear refers to a rotational speed gear of the refrigerator compressor, different gears of the refrigerator compressor have different rotational speeds, and the refrigerator compressor gear is increased, that is, the rotational speed of the refrigerator compressor is increased.
It should be noted that T in fig. 2 indicates an expected temperature value, T1 indicates a first actual temperature value, T2 indicates a second actual temperature value, and a to f indicate a first preset temperature value to a fifth preset temperature value, respectively. 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 respectively referred to by T preset, T1, T2, and a to f hereinafter.
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 temperature interval of the second preset temperature value is equal to the temperature interval of the third preset temperature value; the values of the second preset temperature value and the third preset temperature value are greater than the value of the fifth preset temperature value; the value of the fifth preset temperature value is larger than that of the fourth preset temperature value.
In specific practice, taking a room to be controlled as a refrigerating chamber as an example, a set temperature gear of the refrigerating chamber is 2-8 ℃, and a T pre-fetching value interval is 2-8 ℃; and a is the middle value of the temperature range of the T pre-allowable value, and the value of a is 5 ℃. Preferably, b can take a value of 2.5-3.5 ℃, and is optimally taken to be 3 ℃; c can take a value of 2.5-3.5 ℃, and the optimal value is 3 ℃; d can be 0.5-1 ℃, and 0.5 ℃ is optimally selected; f can be 1.5-2.5 deg.C, preferably 1.5 deg.C. It can be understood that the above values can be adjusted according to actual conditions.
In the present embodiment, it is first determined whether tpredi ≧ a is satisfied in order to determine the upper and lower limits of tpredi. Because a is the intermediate value of the temperature interval of the pre-desired value of T, when T is not less than a, T is the upper limit temperature, and when T is less than a, T is the lower limit temperature. In this embodiment, the upper and lower limits of T pre are determined first, and then the subsequent conditional decision formula is performed on T1 and T2 according to the upper and lower limits of T pre.
If T is not less than a, judging whether T1-T is set to be not less than b, if so, judging whether b is set to be not less than b, and if T1-T is set to be not less than b, proving that the temperature in the refrigerating chamber is higher at the moment and cooling is needed, so 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 the T1-T is less than b, judging whether T is more than or equal to c of-T2, and if T is more than or equal to c of-T2, controlling the refrigerator compressor to stop refrigerating the refrigerating chamber at the moment, wherein the value of c can be 2.5-3.5 ℃, and the temperature of the refrigerating chamber is proved to be lower at the moment; if T is set as-T2 < c, the corresponding control strategy needs to be determined through the subsequent conditional judgment formula. It can be understood that the determination of whether T is set to-T2 ≧ c in this step is to determine whether T2 is too low, and T2 is too low to indicate that cold air is accumulated in the lower half region of the refrigerating chamber and is sinking, which may cause the food material to be frozen, and to prevent T2 from being too low, it is necessary to control the refrigerator compressor to stop cooling the refrigerating chamber when T is set to-T2 ≧ c.
If T is-T2 and c is less than T, judging whether (T1+ T2)/2 is greater than or equal to T and + d is true, and if (T1+ T2)/2 is greater than or equal to T and + d, proving that the integral temperature of the refrigerating chamber can meet the user expectation at the moment, and controlling the refrigerator compressor to maintain the current gear at the moment; if (T1+ T2)/2 < T + d, the corresponding control strategy is determined by the subsequent conditional judgment formula.
If (T1+ T2)/2 is less than T and + d, judging whether (T1+ T2)/2 is less than or equal to T and-f is established, and if (T1+ T2)/2 is less than or equal to T and-f, proving that the whole temperature of the refrigerating chamber is lower at the moment, and controlling the refrigerator compressor to stop refrigerating the refrigerating chamber at the moment; if (T1+ T2)/2 > T set-f, the integral temperature of the refrigerating chamber can meet the user expectation at the moment, and the compressor of the refrigerator is controlled to maintain the current gear at the moment.
If T is less than a, judging whether T is more than or equal to d which is set as-T2, wherein d can be 0.5-1 ℃, if T is more than or equal to d which is set as-T2, the temperature of the refrigerating chamber is proved to be lower, and the refrigerator compressor is controlled to stop refrigerating the refrigerating chamber at the moment; if T is set as-T2 < d, the corresponding control strategy needs to be determined by the subsequent conditional judgment formula. It can be understood that the determination of whether T is set to-T2 ≧ d in this step is to determine whether T2 is too low, and T2 is too low to indicate that cold air is accumulated in the lower half area of the refrigerating chamber and is sinking, which may cause the food material to be frozen, and to prevent T2 from being too low, it is necessary to control the refrigerator compressor to stop cooling the refrigerating chamber when T is set to-T2 ≧ d.
If T is-T2 < d, judging whether T1-T is more than or equal to f, wherein f can be 1.5-2.5 ℃, and if T1-T is more than or equal to f, the temperature in the refrigerating chamber is higher at the moment and needs to be reduced, so that the gear of the compressor of the refrigerator 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 greater than or equal to T and + d is true, and if (T1+ T2)/2 is greater than or equal to T and + d, proving that the integral temperature of the refrigerating chamber can meet the user expectation at the moment, and controlling the refrigerator compressor to maintain the current gear at the moment; if (T1+ T2)/2 < T + d, the corresponding control strategy is determined by the subsequent conditional judgment formula.
If (T1+ T2)/2 is less than T set + d, whether (T1+ T2)/2 is less than or equal to T set-f is judged, and since f can be 1.5-2.5 ℃, if (T1+ T2)/2 is less than or equal to T set-f, the integral temperature of the refrigerating chamber is proved to be low, and at the moment, the refrigerator compressor is controlled to stop refrigerating the refrigerating chamber; if (T1+ T2)/2 > T set-f, the integral temperature of the refrigerating chamber can meet the user expectation at the moment, and the compressor of the refrigerator is controlled to maintain the current gear at the moment.
It should be noted that, after the refrigerator compressor is controlled to be shifted up, 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;
and if the difference between the first actual temperature value and the expected temperature value is not less than a positive integer multiple of 2, controlling the gear of the refrigerator compressor 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 less than a positive integral multiple of 2, controlling the compressor of the refrigerator to maintain the current gear.
In specific practice, the refrigerator compressor is controlled to be shifted up to one gear in order to increase the rotation speed of the compressor to the original gear for operation. Specifically, the rotating speed ratio f (n) of the first gear rising position of the compressor to the current gear satisfies the first-order function:
since n is 1 at this time, the rotation speed ratio of the first-gear-up of the compressor to the current gear is 5/4.
In this embodiment, whether T1-T is equal to or greater than 2N (N is 1, 2, 3.. N +) is determined, and if T1-T is equal to or greater than 2N, it is proved that the temperature in the refrigerating chamber is still high after the compressor is shifted to a first gear, and needs to be cooled, and at this time, the shifted gear cannot meet the cooling requirement, and needs to be directly shifted to a skip gear. Specifically, in the embodiment, the rounding is performed on the result of T1-T set/2, that is, the shift of the refrigerator compressor is controlled to be raised again based on the value of n at this time. In particular practice, the compressor speed up by n runs satisfies the step function:
in the formula, n belongs to [1,8] and represents that the highest rotating 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, the temperature of the refrigerating chamber after the compressor is lifted to a gear is proved to meet the user expectation, 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 a user may visually know the current power condition of the refrigerator.
It can be understood that the method for controlling the temperature in the refrigerator provided by the embodiment includes: the method comprises the steps of obtaining an expected temperature value currently set by a user and actual temperature values of different areas in a chamber to be controlled of the refrigerator, substituting the expected temperature value and the actual temperature values into a pre-constructed conditional judgment formula to carry out multi-stage judgment, and executing a corresponding control strategy on a compressor of the refrigerator according to a judgment result of the conditional judgment formula. The method and the device for acquiring the actual temperature values of different areas in the to-be-controlled room of the refrigerator avoid the unreliability of single-point acquisition, the expected temperature values and the actual temperature values are judged in a multi-stage manner through a plurality of condition judgment formulas which are constructed in advance, and compared with the prior art that the acquired temperature in the refrigerator is simply compared with the preset temperature, the method and the device for acquiring the actual temperature values of different areas in the to-be-controlled room of the refrigerator have higher rigor, have corresponding control strategies according to different judgment results, and have better temperature control effect through diversified control strategies.
Example two
Fig. 3 is a schematic structural view illustrating a refrigerator according to an exemplary embodiment, as shown in fig. 3, the refrigerator including:
at least two temperature sensors 21;
a refrigerator compressor 22, a communication module 23, a processor 24 and a memory 25;
wherein, the temperature sensors 22 are arranged in different areas in the refrigerator;
the memory 25 has stored therein program instructions;
the processor 24 is for executing program instructions stored in the memory to perform the in-refrigerator temperature control method as in the above embodiments.
In specific practice, two temperature sensors 21 can be arranged at the top and the bottom of the refrigerating chamber of the refrigerator respectively, specifically, the upper temperature sensor is arranged at a position 5cm away from the upper edge of the refrigerating hood, the lower temperature sensor is arranged at a position 5cm above the lowest shelf of the refrigerating chamber, and during specific implementation, the arrangement position of the temperature sensors 21 can be adjusted according to the design volume and the air duct structure of the refrigerating chamber of the refrigerator. It can be understood that in the present embodiment, at least two temperature sensors 21 are disposed at the top and bottom of the refrigerator compartment to obtain the actual temperature values at the top and bottom of the refrigerator compartment, thereby avoiding the imprecise temperature single-point acquisition.
EXAMPLE III
Fig. 4 is a schematic block diagram illustrating an in-refrigerator temperature control system according to an exemplary embodiment, as shown in fig. 4, the in-refrigerator temperature control system including:
the acquiring module 31 is used for acquiring an expected temperature value currently set by a user and actual temperature values of different areas in the compartment to be controlled of the refrigerator;
the judgment module 32 is used for substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to perform multi-stage judgment;
and the execution module 33 is configured to execute a corresponding control strategy on the refrigerator compressor according to the judgment result of the conditional judgment formula.
It can be understood that the present embodiment provides an in-refrigerator temperature control system, including: an acquisition module 31, a judgment module 32 and an execution module 33. During implementation, the obtaining module 31 obtains an expected temperature value currently set by a user and an actual temperature value of different areas in a chamber to be controlled of the refrigerator, the judging module 32 substitutes the expected temperature value and the actual temperature value into a pre-constructed conditional judgment formula to perform multi-stage judgment, and the executing module 33 executes a corresponding control strategy on the refrigerator compressor according to a judgment result of the conditional judgment formula. The actual temperature values of different regions in the refrigerator room to be controlled are obtained in the embodiment, the non-rigor of single-point acquisition is avoided, the expected temperature value and the actual temperature value are judged in a multi-stage mode through a plurality of condition judgment formulas which are constructed in advance, compared with the prior art that the temperature in the refrigerator which is acquired is simply compared with the preset temperature, the rigor of the scheme in the embodiment is higher, corresponding control strategies are provided according to different judgment results, and the temperature control effect is better due to diversified control strategies.
It should be noted that the system for controlling the temperature in the refrigerator further includes: a power display module; and the power display module is used for acquiring and displaying the current gear information of the refrigerator compressor.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
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 alternate 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 should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (23)
1. A method for controlling a temperature in a refrigerator, comprising:
acquiring an expected temperature value currently set by a user and actual temperature values of different areas in a chamber 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 multi-stage judgment;
and executing a corresponding control strategy on the refrigerator compressor according to the judgment result of the condition judgment formula.
2. The method of claim 1, wherein the obtaining actual temperature values of different areas in the refrigerator comprises:
determining the temperature distribution in the room to be controlled;
dividing the room to be controlled into at least two areas according to the temperature distribution in the room to be controlled;
acquiring actual temperature values of different areas in the room to be controlled; the actual temperature values include at least: a first actual temperature value and a second actual temperature value.
3. The method of claim 2, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-level decision comprises:
and judging whether the expected temperature value is not less than a first preset temperature value or not.
4. The method of claim 3, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-stage determination further comprises:
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 a second preset temperature value.
5. The method of claim 4, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-stage determination further comprises:
if the difference between the first actual temperature value and the expected temperature value is less than the second preset temperature value, judging whether the difference between the expected temperature value and the second actual temperature value is not less than a third preset temperature value.
6. The method of claim 5, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-level decision further comprises:
if the difference between the expected temperature value and the second actual temperature value is smaller than a third preset temperature value, 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 a fourth preset temperature value is judged.
7. The method of claim 3, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-stage determination further comprises:
if the expected temperature value is smaller than the first preset temperature value, whether the difference between the expected temperature value and the second preset temperature value is not smaller than the fourth preset temperature value or not is judged.
8. The method of claim 7, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-stage determination further comprises:
if the difference between the expected temperature value and the second preset temperature value is smaller than the fourth preset temperature value, whether the difference between the first actual temperature value and the expected temperature value is not smaller than the fifth preset temperature value is judged.
9. The method of claim 8, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional predicate for multi-stage determination further comprises:
and 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.
10. The method according to any one of claims 6 or 9, wherein the substituting the expected temperature value and the actual temperature value into a pre-constructed conditional criterion for performing a multi-stage determination 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, whether the average value of the first actual temperature value and the second actual temperature value is not larger than the difference between the expected temperature value and the fifth preset temperature value is judged.
11. The method of claim 4, wherein the executing the corresponding control strategy for the refrigerator compressor according to the judgment result of the conditional judgment formula comprises:
and if the difference between the first actual temperature value and the expected temperature value is not less than the second preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
12. The method according to claim 5, wherein the executing a corresponding control strategy for the refrigerator compressor according to the judgment result of the conditional judgment formula further comprises:
and if the difference between the expected temperature value and the second actual temperature value is not less than the third preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
13. The method according to claim 6 or 9, wherein the executing a corresponding control strategy for a refrigerator compressor according to the judgment result of the conditional judgment formula further comprises:
and if the average value of the first actual temperature value and the second actual temperature value is not less than the sum of the expected temperature value and the fourth preset temperature value, controlling the refrigerator compressor to maintain the current gear.
14. The method according to claim 7, wherein the executing a corresponding control strategy for the refrigerator compressor according to the judgment result of the conditional judgment formula further comprises:
and if the difference between the expected temperature value and the second preset temperature value is not less than the fourth preset temperature value, controlling the refrigerator compressor to stop refrigerating the compartment to be controlled.
15. The method according to claim 8, wherein the executing a corresponding control strategy for a refrigerator compressor according to the judgment result of the conditional judgment formula further comprises:
and if the difference between the first actual temperature value and the expected temperature value is not less than the fifth preset temperature value, controlling the gear of the refrigerator compressor to be lifted.
16. The method of claim 10, wherein the executing a corresponding control strategy for a refrigerator compressor according to the judgment result of the conditional judgment formula further comprises:
if the mean 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 a fifth preset temperature value, controlling a 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 greater than the difference between the expected temperature value and a fifth preset temperature value, controlling the compressor of the refrigerator to maintain the current gear.
17. The method of claim 11 or 15, wherein after controlling the refrigerator compressor to be in the range up, 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;
and if the difference between the first actual temperature value and the expected temperature value is not less than a positive integral multiple of 2, controlling the shift of the refrigerator compressor to be lifted again based on the ratio of the difference between the first actual temperature value and the expected temperature value to 2.
18. The method of claim 17, wherein if the difference between the first actual temperature value and the expected temperature value is less than a positive integer multiple of 2, controlling the refrigerator compressor to maintain the current gear.
19. The method according to claim 10, wherein the first predetermined temperature value is an intermediate value of a temperature interval of expected values;
the temperature interval of the second preset temperature value is equal to the temperature interval of the third preset temperature value;
the values of the second preset temperature value and the third preset temperature value are greater than the value of the fifth preset temperature value;
the value of the fifth preset temperature value is larger than that of the fourth preset temperature value.
20. The method according to any one of claims 1 to 9, further comprising: and acquiring and displaying the current gear information of the refrigerator compressor.
21. A refrigerator, characterized by 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 room to be controlled of the refrigerator;
the memory has stored therein program instructions;
the processor is configured to execute program instructions stored in the memory to perform the method of any of claims 1 to 20.
22. The refrigerator as claimed in claim 21, wherein the temperature sensors are respectively provided at the top and bottom of the compartment to be controlled.
23. An in-refrigerator temperature control system, 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 the room to be controlled of the refrigerator;
the judgment module is used for substituting the expected temperature value and the actual temperature value into a pre-constructed condition judgment formula to carry out multi-stage judgment;
and the execution module is used for executing a corresponding control strategy on the refrigerator compressor according to the judgment result of the condition judgment formula.
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