CN114234548B - Refrigerator temperature fluctuation control method, data processing method and device and refrigerator - Google Patents
Refrigerator temperature fluctuation control method, data processing method and device and refrigerator Download PDFInfo
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- CN114234548B CN114234548B CN202111584944.4A CN202111584944A CN114234548B CN 114234548 B CN114234548 B CN 114234548B CN 202111584944 A CN202111584944 A CN 202111584944A CN 114234548 B CN114234548 B CN 114234548B
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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
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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
- F25D2600/00—Control issues
- F25D2600/02—Timing
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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 discloses a refrigerator temperature fluctuation control method, a data processing method and device and a refrigerator. Wherein, the method comprises the following steps: after detecting that the refrigerator has door opening action and door closing action, acquiring the temperature change slope in the compartment; matching corresponding reference values in a pre-stored database according to the temperature change slope; determining whether the action of putting food materials exists after the door is opened according to the reference value; if so, determining a corresponding control strategy according to the reference value so as to control the temperature regulation and control of the refrigerator; and if not, controlling the temperature regulation and control of the refrigerator according to preset operation. According to the method and the device, when the door opening and closing action of the refrigerator is detected, the control strategy for regulating and controlling the temperature of the refrigerator is determined according to the matching of the actual temperature change slope of the compartment and the prestored database, so that the temperature of the refrigerator compartment is accurately regulated and controlled, a camera and a plurality of high-precision temperature sensing packages do not need to be arranged in the compartment, and the cost of the refrigerator is greatly reduced on the basis of ensuring the fresh-keeping effect of food materials in the refrigerator.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator temperature fluctuation control method, a data processing method and device and a refrigerator.
Background
At present, in the daily use process of an ordinary refrigerator, the door opening and closing times are generally frequent, whether food materials are put into the door opening and closing at every time or not, or how many food materials are put into the door opening and closing at every time are different, so that the temperature fluctuation of the refrigerator is large, a refrigeration system cannot accurately identify, the cold quantity cannot be increased when the food materials are put into the refrigerator, the cold quantity is put into the refrigerator in advance when new food materials are not put into the refrigerator, the energy is wasted, accurate control is difficult to achieve, delay always exists, and the temperature fluctuation is large.
In view of the above situation, in the prior art, a scheme of identifying food materials by loading a camera is adopted, but the scheme has high cost and has high requirements on low-temperature resistance and reliability of the camera. The scheme that the detection and correction of the compartment temperature are carried out through a plurality of infrared temperature sensing bulbs is adopted in the prior art, but the scheme that the plurality of high-precision temperature sensing bulbs are required to be arranged at different positions of the compartment, the cost is high, judgment errors still exist, and accurate control of compartment temperature fluctuation cannot be achieved.
Aiming at the problems that in the prior art, the cost of a compartment temperature fluctuation control scheme caused by opening and closing a door of a refrigerator is high, and the precision is not high enough, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a refrigerator temperature fluctuation control method, a data processing method and a data processing device and a refrigerator, and aims to solve the problems that in the prior art, the cost of a compartment temperature fluctuation control scheme is high and the accuracy is not high enough due to opening and closing of a door of the refrigerator.
In order to solve the technical problem, the invention provides a refrigerator temperature fluctuation control method, wherein the method comprises the following steps: after door opening and door closing actions of the refrigerator are detected, acquiring a temperature change slope in the compartment; matching corresponding reference values in a prestored database according to the temperature change slope; determining whether the action of putting food materials exists after the door opening action according to the reference value; if so, determining a corresponding control strategy according to the reference value so as to control the temperature regulation and control of the refrigerator; if not, controlling the temperature regulation and control of the refrigerator according to preset operation.
Further, the reference value is a temperature change slope under different test conditions stored in the pre-stored database; the test conditions include: the first type of test conditions: the environmental temperature, the door opening duration and whether food materials are put in; second test conditions: the food material quantity, the food material temperature and the food material placing position.
Further, acquiring a temperature change slope in the compartment comprises: monitoring the door opening duration and the temperature change value between the door opening action and the door closing action; and calculating the temperature change slope according to the temperature change value and the door opening duration.
Further, matching corresponding reference values in a pre-stored database according to the temperature change slope includes: determining the current environment temperature and the door opening duration; searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature and the same door opening duration; if so, taking the reference value as a reference value matched with the temperature change slope; if not, adjusting the fan speed and the compressor frequency of the refrigerator, and acquiring the temperature change slope in the compartment again; matching corresponding reference values in a pre-stored database according to the temperature change slope; wherein the test conditions further include a third type of test condition: fan speed, compressor frequency, change in temperature change slope over one or more temperature control cycles.
Further, adjusting the fan speed and the compressor frequency of the refrigerator, and acquiring the temperature change slope in the compartment again; matching corresponding reference values in a pre-stored database according to the temperature change slope, wherein the matching comprises the following steps: adjusting the wind speed of the fan, and then acquiring the temperature change slope in the compartment again; searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration and the same fan wind speed; if so, taking the reference value as a reference value matched with the temperature change slope; if not, adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again; and matching corresponding reference values in a pre-stored database according to the temperature change slope.
Further, adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again; matching corresponding reference values in a pre-stored database according to the temperature change slope, wherein the method comprises the following steps: adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again; searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan wind speed and the same compressor frequency; if so, taking the reference value as a reference value matched with the temperature change slope; if not, monitoring the change of the temperature change slope of the refrigerator chamber in one or more temperature control periods; and matching corresponding reference values in a pre-stored database according to the change of the temperature change slope.
Further, monitoring the change of the temperature change slope of the refrigerator chamber in one or more temperature control periods; matching corresponding reference values in a pre-stored database according to the change of the temperature change slope, wherein the matching comprises the following steps: searching in the pre-stored database: whether a reference value which is the same as the change of the temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan air speed and the same compressor frequency; if so, taking the reference value as a reference value matched with the temperature change slope; and if not, taking the reference value closest to the initial temperature change slope in the prestored database as the matched reference value.
Further, determining whether an action of putting food materials into the refrigerator exists after the door opening action according to the reference value comprises the following steps: determining a second type of test condition associated with the reference value; and determining whether the action of putting food materials is available after the door opening action according to the second type of test conditions.
Further, if yes, determining a corresponding control strategy according to the reference value, including: determining all test conditions associated with the reference value; determining a corresponding control strategy according to all the test conditions; wherein, the corresponding relation between the test condition and the control strategy is preset; the control strategy includes at least one of: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased.
Further, controlling the temperature regulation of the refrigerator according to preset operation includes: determining at least one of the following preset operations according to the temperature change of the compartment: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased.
The invention also provides a refrigerator temperature fluctuation data processing method, wherein the method comprises the following steps: setting a plurality of test conditions; wherein the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in; recording the corresponding temperature change slope in the refrigerator compartment under different test conditions; the combination of all the different test conditions and the corresponding temperature change slope are stored in a pre-stored database.
Further, the test conditions further include at least one of: the food material quantity, the food material temperature and the food material placing position.
Further, the test conditions further include at least one of: fan speed, compressor frequency, change in temperature change slope over one or more temperature control cycles.
Further, the number of the food materials is the number of the experimental food material bags with the same volume and the same shape.
The present invention also provides a refrigerator temperature fluctuation control apparatus, wherein the apparatus comprises: the acquisition module is used for acquiring the temperature change slope in the compartment after detecting that the refrigerator has door opening and door closing actions; the database processing module is used for matching corresponding reference values in a pre-stored database according to the temperature change slope; determining whether the action of putting food materials is carried out after the door opening action according to the reference value; the temperature control module is used for determining a corresponding control strategy according to the reference value under the condition that food material placing action exists so as to control the temperature regulation and control of the refrigerator; and under the condition that no food material is put in, controlling the temperature regulation and control of the refrigerator according to preset operation.
The invention also provides a refrigerator temperature fluctuation data processing device, wherein the device comprises:
the setting module is used for setting a plurality of test conditions; wherein the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in; the recording module is used for recording the corresponding temperature change slope in the refrigerator compartment under different test conditions; and the storage module is used for storing all different combinations of test conditions and corresponding temperature change slopes in a pre-stored database.
The invention also provides a refrigerator, wherein the refrigerator comprises the refrigerator temperature fluctuation control device and/or the refrigerator temperature fluctuation data processing device.
The invention provides a computer-readable storage medium, on which a computer program is stored, wherein said program, when executed by a processor, implements the method as described above, and/or the method as described above.
By applying the technical scheme of the invention, the temperature change slopes under different test conditions are stored in the pre-stored database, and when the door opening and closing action of the refrigerator is detected, the control strategy for regulating and controlling the temperature of the refrigerator is determined according to the matching of the actual temperature change slope of the compartment and the pre-stored database, so that the stable and rapid recovery of the compartment temperature after the door opening and closing is accurately and efficiently realized.
Drawings
Fig. 1 is a flowchart of a refrigerator temperature fluctuation control method according to an embodiment of the present invention;
fig. 2 is a flowchart of a refrigerator temperature fluctuation data processing method according to an embodiment of the present invention;
FIG. 3 is a graph schematically illustrating a temperature control of a refrigerating chamber of a general refrigerator according to the related art;
FIG. 4 is a schematic diagram illustrating a temperature variation curve when no food material is put into the refrigerator according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a temperature variation curve when food material is put into the refrigerator according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a control procedure for identifying whether food material is inserted into an opened and closed door of a refrigerator according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a temperature variation curve after different control strategies are executed after whether food materials are put into the refrigerator door is identified according to the embodiment of the invention;
fig. 8 is a block diagram of a configuration of a temperature fluctuation controlling apparatus for a refrigerator according to an embodiment of the present invention;
fig. 9 is a block diagram of a configuration of a refrigerator temperature fluctuation data processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one of 8230, and" comprising 8230does not exclude the presence of additional like elements in articles or devices comprising the element.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
Fig. 1 is a flowchart of a temperature fluctuation control method of a refrigerator according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
and S101, acquiring a temperature change slope in the compartment after detecting that the refrigerator has door opening and door closing actions. Specifically, the door opening duration and the temperature change value between the door opening action and the door closing action are monitored; and calculating the temperature change slope according to the temperature change value and the door opening duration.
And S102, matching corresponding reference values in a pre-stored database according to the temperature change slope.
And step S103, determining whether the food material placing action exists after the door opening action according to the reference value.
And step S104, if so, determining a corresponding control strategy according to the reference value so as to control the temperature regulation and control of the refrigerator.
The reference value is the temperature change slope under different testing conditions stored in a pre-stored database; the test conditions included: the first type of test conditions: ambient temperature, door opening duration, second type test condition: whether food materials are put in, the number of the food materials, the temperature of the food materials and the placement positions of the food materials are put in, and preferably, the method further comprises a third type of test conditions: fan speed, compressor frequency, temperature change slope change over one or more temperature control cycles. In the test stage, each of the first type of test condition, the second type of test condition, and the third type of test condition is arbitrarily combined to form all possible condition combinations, where the condition combinations may include two conditions or may include 9 conditions. And then, carrying out individual test on various condition combinations to obtain corresponding reference values, and storing each reference value and the corresponding test condition into a pre-stored database. The temperature control period is as follows: the temperature control period is from the time that the refrigerator compartment is at the preset temperature before the door is opened to the time that the temperature of the refrigerator compartment is increased due to the door opening and then the temperature of the refrigerator compartment is reduced to the preset temperature.
When the corresponding reference values in the pre-stored database are matched according to the temperature change slope, data search can be performed in sequence according to the priority sequence of the test conditions, for example, the ambient temperature and the door opening time in the first type of test conditions are the first priority, the fan wind speed in the third type of test conditions is the second priority, the compressor frequency is the third priority, and the change of the temperature change slope in one or more temperature control periods is the fourth priority. Of course, the above priorities are merely illustrative, and the ordering of the priorities is not limiting. The second type of test condition is that the refrigerator cannot be directly judged in the using process and needs to be searched and confirmed according to the data in the pre-stored database.
Matching corresponding reference values in a pre-stored database according to the temperature change slope, specifically: determining the current environment temperature and the door opening duration; searching in a pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature and the same door opening duration; if so, taking the reference value as a reference value matched with the temperature change slope; if not, adjusting the fan speed and the compressor frequency of the refrigerator, and acquiring the temperature change slope in the compartment again; matching corresponding reference values in a pre-stored database according to the temperature change slope; wherein the test conditions further comprise a third type of test conditions: fan speed, compressor frequency, temperature change slope change over one or more temperature control cycles. Based on this, if only one corresponding reference value can be found in the pre-stored database according to the environmental temperature and the door opening duration, it indicates that the actual use scenario (for example, whether food materials are put in, the food material placement position, and the like) of the current refrigerator can be determined accordingly.
If at least two reference values are found, the actual use scene of the current refrigerator cannot be uniquely determined, and test conditions need to be added for further confirmation. According to the embodiment, a preferable implementation mode is provided, namely, the wind speed of the fan is adjusted (for example, the wind speed of the fan is increased, and the wind speed can be adjusted according to a preset amplitude), and then the temperature change slope in the compartment is obtained again; searching in a pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration and the same fan wind speed; if so, taking the reference value as a reference value matched with the temperature change slope; if not, adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again; and matching the corresponding reference value in the pre-stored database according to the temperature change slope.
If the unique reference value still cannot be corresponded, the test condition (compressor frequency) is further increased to confirm the unique actual use scene. Specifically, the compressor frequency is adjusted (for example, the compressor frequency is increased, which may be adjusted according to a preset amplitude), and then the temperature change slope in the compartment is obtained again; searching in a pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan air speed and the same compressor frequency; if so, taking the reference value as a reference value matched with the temperature change slope; if not, monitoring the change of the temperature change slope of the refrigerator chamber in one or more temperature control periods; and matching corresponding reference values in a pre-stored database according to the change of the temperature change slope.
If the unique reference value still cannot be corresponded, the test condition (the change of the temperature change slope of the refrigerator chamber in one or more temperature control periods) is further added to confirm the unique actual use scene. Specifically, look up in a pre-stored database: whether a reference value which is the same as the change of the temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan wind speed and the same compressor frequency; if so, taking the reference value as a reference value matched with the temperature change slope; if not, the reference value closest to the initial temperature change slope in the database is prestored as the matched reference value. That is, when all the above test conditions are considered, if it is still impossible to confirm a unique actual usage scenario, the closest reference value is directly retrieved. Based on the preferred embodiment, the matching accuracy can be improved step by step, so that a proper reference value can be finally matched, and various test conditions corresponding to the reference value in the database are prestored, so that the current actual use scene of the refrigerator can be comprehensively simulated, and the simulation accuracy is high.
After the reference value is matched in the pre-stored database, whether the food material is put in after the door is opened can be determined. Specifically, a second type of test condition (whether to put in food, the number of food, the temperature of food, the placement position of food) associated with the reference value is determined; and determining whether the food material placing action exists after the door opening action according to the second type of test conditions.
If the action of placing the food materials exists, the temperature of the compartment can be influenced by the newly placed food materials in the refrigerator, and therefore the corresponding control strategy is determined according to the reference value so as to control the temperature regulation and control of the refrigerator. In particular, all test conditions associated with a reference value are determined; determining a corresponding control strategy according to all the test conditions; wherein, the corresponding relation between the test condition and the control strategy is preset; the control strategy includes at least one of: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased. The combination of different test conditions corresponds to different control strategies (e.g. specific control parameters) such as magnitude of increase in compressor frequency, magnitude of increase in fan wind speed, magnitude of increase in damper opening, etc. Therefore, the room temperature can be quickly and efficiently regulated and controlled to the optimal storage temperature, and the food preservation effect is ensured.
If the food material is not put in, the temperature fluctuation in the refrigerator chamber is not too large, and normal temperature control operation is adopted, namely at least one of the following preset operations is determined according to the temperature change of the chamber: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased.
By applying the technical scheme of the invention, the temperature change slopes under different test conditions are stored in the pre-stored database, when the door opening and closing action of the refrigerator is detected, the control strategy for regulating and controlling the temperature of the refrigerator is determined according to the matching of the actual temperature change slope of the compartment and the pre-stored database, so that the stable and rapid recovery of the compartment temperature after the door opening and closing is accurately and efficiently realized, in addition, the scheme does not need to arrange a camera and a plurality of high-precision temperature sensing bags in the compartment of the refrigerator, the effective control of the temperature fluctuation of the refrigerator can be realized only by one or a plurality of common temperature sensing bags, and the refrigerator cost is greatly reduced on the basis of ensuring the fresh-keeping effect of food materials in the refrigerator.
Example 2
The above embodiments refer to a pre-stored database storing test data obtained by performing a one-to-one test under a plurality of test conditions. Fig. 2 is a flowchart of a refrigerator temperature fluctuation data processing method according to an embodiment of the present invention, as shown in fig. 2, the method including:
step S201, setting a plurality of test conditions; the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in. Preferably, the test conditions further include at least one of: food material temperature, food material placement position and food material quantity. Further comprising at least one of: fan speed, compressor frequency, temperature change slope change over one or more temperature control cycles. The number of the food materials is the number of the experimental food material bags with the same volume and the same shape, so that the accuracy of the experimental data is ensured.
Step S202, recording the corresponding temperature change slope in the refrigerator compartment under different test conditions.
Step S203, storing all combinations of different test conditions and corresponding temperature change slopes in a pre-stored database.
When the pre-stored database collects test data, the cooling speed is different by adjusting the fan speed and the compressor frequency when the slope is equal, so that the slope is different, and the judgment is more convenient. In the embodiment, a plurality of test conditions which can influence the temperature change of the compartment during the door opening and closing of the compartment are considered, on the basis, the test is carried out through various combination forms of the plurality of test conditions, the combination of different test conditions and the corresponding temperature change slope are obtained and stored in the pre-stored database, and therefore in the normal operation process of the refrigerator, when the door opening and closing of the compartment causes temperature fluctuation, the stored data in the pre-stored database can be directly called to judge whether the door opening and closing action has the action of putting food materials or not, and the intelligent temperature control is carried out on the refrigerator according to the action. On the basis that does not need camera and high accuracy temperature sensing package, alright realize the intelligent control by temperature change to the refrigerator, the cost is very low.
Example 3
In daily use of the refrigerator, a user often opens the door, may see what is in the refrigerator and then close the door without operation, may put in food materials after opening the door and then close the door, may put in more food materials, and has a slightly long time for closing the door. Under various scenes, the refrigerator generally waits for the door to be closed, then the temperature rises to exceed the set temperature, and then the refrigerator is moved to adjust the refrigerating capacity to reduce the temperature, so that the refrigerator is not intelligent enough. As shown in fig. 3, for a period of a temperature curve when the refrigerator is normally maintained, T3 is a set point temperature, for example, 4 ℃, after the temperature is increased, for example, when T2 (7 ℃) is reached, the refrigerating damper is opened to reduce the temperature, and when the temperature is reduced to be lower than 4 ℃, for example, when T1 (1 ℃) is reached, the refrigerating damper is closed, and then the temperature is increased accordingly, so as to form a period.
The invention provides a scheme for intelligently judging whether food materials are put in a refrigerator door opening and closing process, which is described as follows:
first, the time length required for the T2 and T3 points, i.e. T2-T1 minutes, is recorded according to different ambient temperatures, for example, 32 ℃, when the temperature fluctuates in the refrigerator stability control period, as in the process of fig. 3. The temperature change slope k1= (T2-T3)/(T2-T1) is calculated and the absolute values are taken and divided again, i.e. k1= ABS (T2-T3)/ABS (T2-T1), respectively.
Obtaining corresponding temperature change slopes, e.g. k, at different ring temperatures 32℃ 、k 25℃ 、k 16℃ Respectively indicating standard slope values at 32 ℃, 25 ℃ and 16 ℃ of ring temperature, and forming a first database by using the corresponding slope values at all the ring temperatures, and recording the values as Z Stable temperature control-different ring temperature no-load 1 。
Similarly, different numbers of food material bags are put into each shelf of the refrigerating chamber, different slope values are respectively obtained under different environment temperatures, for example, the shelf has 3 layers, and when food materials are put into the first layer, each environment temperature database is recorded as Z Stable temperature control-different environment temperature shelves with food material 2 When different numbers of layers are put in the slope database corresponding to different ring temperatures, the slope database is Z Stable temperature control-Condition 3 、……Z Stable temperature control-Condition n According to the shapeAnd forming a slope database. (the compressor frequency, the wind speed, the opening degree of the air door and the like are not changed at this time, and only one factor is changed, such as the change of the environment temperature or the change of food materials).
Secondly, the door opening and closing of the refrigerator is analyzed, as shown in fig. 4, when only the door of the refrigerator is opened and food is not put in, the air temperature rises quickly, as shown in the figure, the temperature rises to T1 after the door is opened, then the cooling speed is high after the door is closed (as the compressor frequency rises because the cooling speed is higher than the ordinary temperature control shown in the figure), at this time, the cooling slope k2= ABS (T1-T3)/ABS (tb-ta), and similarly, according to the slopes k corresponding to different ambient temperatures 32 ℃ no-load door 、k No-load door opening at 25 DEG C 8230a method for forming database Z Open door ring temperature 1 in no load Database Z formed by different door opening and closing durations Duration of no-load door opening 2 …… Z no-load door n . The slope here is greater than the slope of the stable temperature control curve under the same conditions when the refrigerator is not opened (for example, comparison under the same ring temperature). In addition, the door opening time can be obtained by detecting the opening and closing of the door of the refrigerator through the door switch.
Similarly, as shown in fig. 5, when the curve of the process of loading food materials into the refrigerator is analyzed, the slope k3= ABS (T1-T3)/ABS (td-tc), and at this time k3 is smaller than both values of k1 (temperature control without door opening) and k2 (open-door no-load cooling), because the heat of the food materials is transferred after the food materials are loaded, the transpiration of vegetables absorbs heat, and the like, the cooling effect of the refrigerator is poor, the duration is long, and the slope value is small. Also, different slope databases are recorded according to different conditions, such as Z Food storage material-environment temperature 1 ，Z Food storage Material-different food Material quantity 2 ，Z Food-open duration 3 ……Z Food-other conditions n And so on.
After obtaining the data of the database through testing, a control strategy diagram as shown in fig. 6 is formed, and the control strategy comprises the following steps:
step S601, judging whether the door opening action of the refrigerator is detected; if yes, step S603 is performed, otherwise step S602 is performed.
And step S602, the refrigerator operates according to a normal cooling mode (quick freezing/quick cooling/normal).
And step S603, calculating the duration of the door opening of the refrigerator. Specifically, the door opening and closing action can be detected through a door opening and closing detector, and the door opening and closing time length can be obtained through calculation.
In step S604, the ambient temperature is acquired.
And step S605, calculating the temperature change slope according to the change value of the compartment temperature and the door opening duration.
Step S606, a pre-stored database is called, and the pre-stored database stores the test data under various test condition combinations.
And step S607, matching the reference value and determining the actual use scene of the refrigerator.
For example, when the ambient temperature is 32 ℃, the door opening and closing times of the refrigerator are detected to be 1 time, the door opening time is detected to be 3 minutes, and then the Z in the prestored database is called immediately Stable temperature control-different ring temperature no-load 1 K in (1) 32℃ 、Z Open door ring temperature 1 in no load K in (1) 32℃ 、Z Duration of no-load door opening 2 K in 32℃ 、Z Food storage material-environment temperature 1 K in (1) 32℃ 、Z Food storage Material-different food Material quantity 2 K in (1) 32℃ . And then matching is performed according to the calculated temperature change slope and the above slope values in the pre-stored database. If the direct correspondence is available, the real scene of the refrigerator can be intelligently judged, and if the fuzzy judgment is available, the test condition judgment is added. It should be noted here that the door opening time is long, the temperature is increased greatly, and the cooling slope may be close to the slope value under a certain condition, which may result in inaccurate judgment or erroneous judgment, so that the actual use scenario of the refrigerator can be accurately determined according to multiple judgment conditions, for example, the judgment condition 1 is the door opening time, the judgment condition 2 is the slope value after the wind speed of the fan is increased, and the like.
And step S608, determining corresponding test conditions according to the reference values, thereby determining corresponding control parameters, and accurately controlling the frequency of the compressor, the rotating speed of the fan and the opening degree of the air door according to the control parameters.
Based on the above embodiment, after the refrigerator is intelligently identified whether food materials are put in after the door is opened, the control strategy can be more intelligent, for example, whether food materials are put in after the door is opened or closed, the refrigerator is controlled only according to temperature riseThe height is regulated and controlled, and the refrigerator is uniformly increased in compressor frequency to realize rapid cooling because the temperature is increased rapidly when the refrigerator door is opened and food materials are not put into the refrigerator door. After the new control strategy, if the door is only opened and closed temporarily and food materials are not put in, the original frequency is kept, the temperature reduction is not accelerated, and the energy is saved by slow temperature reduction. As shown in the comparative graph of fig. 7. When the food is identified to be placed, the wind speed needs to be immediately regulated and controlled to be increased, the frequency of the compressor is increased, and the opening degree of the air door is increased; when the slope is detected to be close to Z Stable temperature control-different ring temperatures When the slope is in the middle, the food cooling is finished, and the economic operation mode or the stability maintaining mode is immediately recovered, so that the problem that the compressor always maintains high-frequency operation time and consumes much power due to the fact that only single temperature detection control is used in the prior art is solved.
The above indicates that all the periods are comparison, when the actual food materials are put in a large quantity, the heat released by the food materials has continuity, and the slope change exists in a plurality of periods, so that the slope of the stable temperature control is recovered until the temperature of the food materials is really reduced. Therefore, the change data of the temperature change slope in one or more periods can be stored into a database, such as the slope k1 of the 1 st period and the slope k2 of the 2 nd period, and the slope change can be obtained after counting the slopes of a plurality of periods, and the data can be used as one of the test conditions for increasing and accurately judging the actual use scene of the refrigerator.
According to the invention, whether new food materials are put in can be intelligently judged by comparing the slope calculation of periodic cooling with the preset database. And the change of the cooling slope in each period can be compared with a preset database, and the quantity of the food materials put in can be intelligently estimated. Therefore, the problem that whether food materials are placed in the refrigerator door after a user opens the refrigerator door or not and the common refrigerator cannot be intelligently identified is solved, and meanwhile the problem that the number of the food materials placed in the common refrigerator cannot be estimated, refrigerating capacity cannot be intelligently controlled, and energy utilization efficiency is poor is solved. Through this embodiment, open the back at the refrigerator door, compare through predetermineeing database and actual detection, whether intelligent identification puts into new edible material and estimate how much to intelligent regulation and control refrigeration capacity and surplus cold utilization reach further accuse temperature and energy utilization.
Example 4
In correspondence to the refrigerator temperature fluctuation control method described in fig. 1, the present embodiment provides a refrigerator temperature fluctuation control apparatus, as shown in a block diagram of the structure of the refrigerator temperature fluctuation control apparatus in fig. 8, the apparatus including:
the acquiring module 10 is used for acquiring a temperature change slope in the compartment after detecting that a door opening action and a door closing action of the refrigerator occur;
the database processing module 12 is used for matching corresponding reference values in a pre-stored database according to the temperature change slope; determining whether the action of putting food materials exists after the door opening action according to the reference value;
the temperature control module 14 is configured to determine a corresponding control strategy according to the reference value under the condition that the food material is put in, so as to control temperature regulation and control of the refrigerator; and under the condition that no food material is put in, controlling the temperature regulation and control of the refrigerator according to preset operation.
Fig. 9 is a block diagram of a structure of a temperature fluctuation controlling apparatus for a refrigerator according to an embodiment of the present invention, the apparatus including:
a setting module 20, configured to set a plurality of test conditions; the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in;
the recording module 22 is used for recording the corresponding temperature change slope in the refrigerator chamber under different test conditions;
and the storage module 24 is used for storing all the combinations of different test conditions and the corresponding temperature change slopes in a prestored database.
The embodiment also provides a refrigerator which comprises the refrigerator temperature fluctuation control device and/or the refrigerator temperature fluctuation data processing device.
Example 5
The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.
Embodiments of the present invention provide a non-volatile computer storage medium, where a computer-executable instruction is stored, and the computer-executable instruction may execute the method for controlling temperature fluctuation of a refrigerator in any of the above method embodiments.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memories, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (18)
1. A method for controlling temperature fluctuation of a refrigerator, the method comprising:
after door opening and door closing actions of the refrigerator are detected, acquiring a temperature change slope in the compartment;
matching corresponding reference values in a pre-stored database according to the temperature change slope;
determining whether the action of putting food materials is carried out after the door opening action according to the reference value;
if so, determining a corresponding control strategy according to the reference value so as to control the temperature regulation and control of the refrigerator;
and if not, controlling the temperature regulation and control of the refrigerator according to preset operation.
2. The method of claim 1,
the reference value is the temperature change slope under different test conditions stored in the pre-stored database; the test conditions include: the first type of test conditions: ambient temperature, door opening duration; second type of test conditions: whether food materials are put in, the number of the food materials, the temperature of the food materials and the placement position of the food materials.
3. The method of claim 1, wherein obtaining a slope of a temperature change within a chamber comprises:
monitoring the door opening duration and the temperature change value between the door opening action and the door closing action;
and calculating the temperature change slope according to the temperature change value and the door opening duration.
4. The method of claim 2, wherein matching the corresponding reference values in a pre-stored database according to the temperature change slope comprises:
determining the current environment temperature and the door opening duration;
searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature and the same door opening duration;
if so, taking the reference value as a reference value matched with the temperature change slope;
if not, adjusting the fan speed and the compressor frequency of the refrigerator, and acquiring the temperature change slope in the compartment again; matching corresponding reference values in a pre-stored database according to the temperature change slope;
wherein the test conditions further include a third type of test condition: fan speed, compressor frequency, change in temperature change slope over one or more temperature control cycles.
5. The method of claim 4, wherein the fan speed and the compressor frequency of the refrigerator are adjusted, and the temperature change slope in the compartment is obtained again; matching corresponding reference values in a pre-stored database according to the temperature change slope, wherein the method comprises the following steps:
adjusting the wind speed of the fan, and then acquiring the temperature change slope in the compartment again;
searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration and the same fan wind speed;
if so, taking the reference value as a reference value matched with the temperature change slope;
if not, adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again; and matching corresponding reference values in a pre-stored database according to the temperature change slope.
6. The method according to claim 5, characterized in that the compressor frequency is adjusted, after which the temperature change slope in the compartment is again acquired; matching corresponding reference values in a pre-stored database according to the temperature change slope, wherein the method comprises the following steps:
adjusting the frequency of the compressor, and then acquiring the temperature change slope in the compartment again;
searching in the pre-stored database: whether a reference value with the same temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan wind speed and the same compressor frequency;
if so, taking the reference value as a reference value matched with the temperature change slope; if not, monitoring the change of the temperature change slope of the refrigerator chamber in one or more temperature control periods; and matching corresponding reference values in a pre-stored database according to the change of the temperature change slope.
7. The method of claim 6, wherein the change in the slope of the change in temperature of the refrigerator compartment is monitored over one or more temperature control periods; matching corresponding reference values in a pre-stored database according to the change of the temperature change slope, wherein the matching comprises the following steps:
searching in the pre-stored database: whether a reference value which is the same as the change of the temperature change slope exists or not under the same environment temperature, the same door opening duration, the same fan air speed and the same compressor frequency;
if so, taking the reference value as a reference value matched with the temperature change slope; and if not, taking the reference value closest to the initial temperature change slope in the prestored database as the matched reference value.
8. The method of claim 2, wherein determining whether there is a food material input action after the door opening action according to the reference value comprises:
determining a second type of test condition associated with the reference value;
and determining whether the food material placing action exists after the door opening action according to the second type of test conditions.
9. The method of claim 2, wherein if so, determining a corresponding control strategy based on the reference value comprises:
determining all test conditions associated with the reference value;
determining a corresponding control strategy according to all test conditions; wherein, the corresponding relation between the test condition and the control strategy is preset; the control strategy includes at least one of: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased.
10. The method as claimed in claim 1, wherein controlling the temperature regulation of the refrigerator according to a preset operation comprises:
determining at least one of the following preset operations according to the temperature change of the compartment: the frequency of the compressor is increased, the wind speed of the fan is increased, and the opening degree of the air door is increased.
11. A refrigerator temperature fluctuation data processing method for realizing the refrigerator temperature fluctuation control method according to any one of claims 1 to 10, characterized by comprising:
setting a plurality of test conditions; the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in;
recording the corresponding temperature change slope in the refrigerator compartment under different test conditions;
the combination of all the different test conditions and the corresponding temperature change slope are stored in a pre-stored database.
12. The method of claim 11,
the test conditions include at least one of: the number of food materials, the temperature of the food materials and the placement position of the food materials.
13. The method of claim 11,
the test conditions include at least one of: fan speed, compressor frequency, change in temperature change slope over one or more temperature control cycles.
14. The method of claim 11,
the number of the food materials is the number of the experimental food material bags with the same volume and the same shape.
15. A temperature fluctuation control apparatus for a refrigerator, the apparatus comprising:
the acquisition module is used for acquiring the temperature change slope in the compartment after detecting that the refrigerator has door opening and door closing actions;
the database processing module is used for matching corresponding reference values in a pre-stored database according to the temperature change slope; determining whether the action of putting food materials exists after the door opening action according to the reference value;
the temperature control module is used for determining a corresponding control strategy according to the reference value under the condition that food material placing action exists so as to control the temperature regulation and control of the refrigerator; and under the condition that no food material is put in, controlling the temperature regulation and control of the refrigerator according to preset operation.
16. A refrigerator temperature fluctuation data processing apparatus for implementing the refrigerator temperature fluctuation control method according to any one of claims 1 to 10, characterized by comprising:
the setting module is used for setting a plurality of test conditions; wherein the test conditions at least comprise the environmental temperature, the door opening duration and whether food materials are put in;
the recording module is used for recording the corresponding temperature change slope in the refrigerator compartment under different test conditions;
and the storage module is used for storing all different combinations of test conditions and corresponding temperature change slopes in a pre-stored database.
17. A refrigerator characterized in that it comprises the refrigerator temperature fluctuation control apparatus of claim 15, and/or the refrigerator temperature fluctuation data processing apparatus of claim 16.
18. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method of one of the claims 1 to 10 and/or the method of one of the claims 11 to 14.
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| DE19700544A1 (en) * | 1997-01-10 | 1998-07-16 | Aeg Hausgeraete Gmbh | Method for restoring temperature in refrigerator |
| JP5404549B2 (en) * | 2010-07-26 | 2014-02-05 | 三菱電機株式会社 | Freezer refrigerator |
| 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 |
| CN104296490B (en) * | 2014-10-09 | 2017-01-11 | 合肥美的电冰箱有限公司 | Refrigerator and control method and system thereof |
| CN109489335B (en) * | 2017-09-13 | 2020-12-25 | 青岛海尔特种电冰柜有限公司 | Refrigerator fan control method |
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