CN113847780A - Refrigerating chamber air door control method and system - Google Patents
Refrigerating chamber air door control method and system Download PDFInfo
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- CN113847780A CN113847780A CN202110951385.XA CN202110951385A CN113847780A CN 113847780 A CN113847780 A CN 113847780A CN 202110951385 A CN202110951385 A CN 202110951385A CN 113847780 A CN113847780 A CN 113847780A
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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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- 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
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Abstract
The application relates to a refrigerating chamber air door control method. The method comprises the following steps: acquiring a first temperature difference value, wherein the first temperature difference value is the difference value between a first detection temperature and a preset temperature; acquiring a second temperature difference value, wherein the second temperature difference value is the difference value between a second detection temperature and the first detection temperature; judging whether the second temperature difference value is smaller than or equal to a preset constant value, if so, setting the opening of the refrigerating chamber air door to be K1; if not, setting the opening of the refrigerating chamber air door to be K2; wherein K1 is determined according to the ratio of the first temperature difference and the second temperature difference and the refrigerating chamber state constant, and K1 and K2 are complementary. This scheme is according to the opening of the temperature variation difference in the freezer and in time adjusting the freezer air door of freezer state constant, and then the air output of control freezer air door to the temperature difference control of freezer is in the temperature range of target, realizes the temperature control in the freezer, and finally makes the temperature in each region in the freezer close.
Description
Technical Field
The application relates to the technical field of refrigerating chamber air door control, in particular to a refrigerating chamber air door control method and system.
Background
The traditional air-cooled refrigerating chamber transfers cold air in an evaporator chamber to other refrigerating chambers through a freezing fan, so that the refrigerating chamber is refrigerated; at present, a stepping motor type air door and a set of gear transmission device are installed at an air duct opening of a refrigerating chamber, and the temperature in the refrigerating chamber is controlled mainly by driving the opening of the stepping motor air door through the gear transmission device so as to control the amount of cold air entering the refrigerating chamber; namely, the opening and closing of the air door are controlled according to the positive and negative rotation and the pulse step number of the stepping motor, and the air door is closed when the room temperature reaches the set temperature; on the contrary, when the temperature of the compartment is higher than the temperature of the starting point of the appliance, the air door is opened, and then the cold air volume is controlled to be conveyed.
However, the air door of the traditional air-cooled refrigerating chamber only has two states of full opening and full closing, so that the air door cannot control and adjust the air supply quantity, the temperature fluctuation of the refrigerating chamber is large, and the time delay of controlling the temperature in the refrigerating chamber is caused; in addition, after the uniformity research on the temperature in the refrigerating chamber, the maximum fluctuation of the temperature in the refrigerating chamber can reach 6 ℃ under the normal operation and shutdown states of the refrigerator, the problem of non-uniformity of the temperature in the refrigerating chamber is caused by the air door control mode, the power consumption of the refrigerator is increased, and the adverse effects of increased juice loss rate, reduced storage life and the like of stored products are also caused.
Disclosure of Invention
To overcome the problems of the related art, the present application provides a method of controlling an opening degree of a damper of a refrigerator compartment.
The application provides a refrigerating chamber air door control method in a first aspect, which comprises the following steps:
acquiring a first temperature difference value, wherein the first temperature difference value is the difference value between a first detection temperature and a preset temperature, and the first detection temperature is the temperature detected in the refrigerating chamber; acquiring a second temperature difference value, wherein the second temperature difference value is the difference value between a second detection temperature and the first detection temperature, and the second detection temperature is the temperature of the refrigerating chamber detected again at an interval of a first preset time length after the first detection temperature is detected; judging whether the second temperature difference value is smaller than or equal to a preset constant value, if so, setting the opening of the refrigerating chamber air door to be K1; if not, setting the opening of the refrigerating chamber air door to be K2; wherein K1 is determined according to the ratio of the first temperature difference and the second temperature difference and the refrigerating chamber state constant, and K1 and K2 are complementary.
In one implementation method, before determining whether the second temperature difference is smaller than or equal to a predetermined constant value, the method further includes: obtaining a refrigerating chamber starting reference value, wherein the refrigerating chamber starting reference value is a value obtained by adding a constant value to an initial temperature value of a refrigerating chamber when the refrigerating chamber operates for the first time; judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value or not, and whether the first temperature difference value is larger than or equal to the initial temperature value of the refrigerating chamber or not; if yes, executing the step of judging whether the second temperature difference value is smaller than or equal to a preset constant value; if not, the opening degree of the current refrigerating chamber air door is kept unchanged.
In one embodiment, before determining whether the refrigerating compartment startup reference value is greater than the first temperature difference value, the method includes: judging whether the starting reference value of the refrigerating chamber is less than or equal to the first temperature difference value or not; if yes, the opening of the refrigerating chamber air door is set to be K3, and K3 is larger than or equal to 90 degrees; if not, executing the step of judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value and whether the first temperature difference value is larger than or equal to the initial temperature value of the refrigerating chamber.
In one implementation method, after the setting of the refrigerating chamber damper opening degree to K3, the method further comprises the following steps: acquiring the working time of the air door of the refrigerating chamber; judging whether the working time of the refrigerating chamber air door is longer than the preset time by a second preset time; and if so, setting the opening of the refrigerating chamber air door to be M, wherein the M is the initial opening value of the refrigerating chamber air door.
In one implementation, after the obtaining the operating time of the refrigerating chamber damper, the method further comprises: acquiring the adjusting times of the opening degree of the air door; judging whether the adjusting times of the opening degree of the air door is less than the preset times or not; if yes, the opening degree of the air door of the refrigerating chamber is set to J, and the J is larger than 0 degrees and smaller than or equal to 10 degrees.
In one embodiment, after the setting of the opening degree of the damper of the refrigerating compartment to J, the method further includes: obtaining a stop temperature, wherein the stop temperature is the temperature difference allowed in the refrigerating chamber; judging whether the adjusting times of the opening degree of the air door is more than or equal to the preset times or not, and judging whether the first temperature difference value is equal to the stopping temperature or not; if yes, setting the opening of the refrigerating chamber air door to be 0 degree; if not, judging whether the refrigerating chamber starting reference value is less than or equal to the first temperature difference value.
In one embodiment, before obtaining the first temperature difference, the method further includes: acquiring a freezing detection temperature which is a detected temperature in the freezing chamber; judging whether the freezing detection temperature is less than or equal to the preset freezing temperature; if yes, the compressor is closed; if not, the compressor is started.
In one embodiment, after the setting of the opening degree of the damper of the refrigerating compartment to J, the method further includes: recording the adjustment time length after the opening of the air door of the refrigerating chamber is J; when the adjusting time length reaches G, the opening degree of the air door of the refrigerating chamber is set to be M again; the G is less than 10 s.
In one implementation, the formula for K1 is:
the formula for K2 is:
wherein the K1 and K2 represent opening values of damper adjustment, the Δ T1 represents a first temperature difference, the Δ T2 represents a second temperature difference, and m and n are refrigerator compartment state constants.
A second aspect of the present application provides a refrigeration compartment damper control system comprising:
an acquisition unit and a processing unit; the acquiring unit is used for acquiring the temperature of the refrigerating chamber, acquiring the adjusting times of the air door of the refrigerating chamber and acquiring the air door operating time of the refrigerating chamber after the air door is adjusted; the processing unit is configured to perform the method as set forth in any one of the above and to control the refrigerator compartment damper according to the method.
The technical scheme provided by the application can comprise the following beneficial effects:
in this embodiment, when the refrigerator is operated, the opening degree of the damper of the refrigerating chamber is determined by obtaining the detected temperatures (i.e., the first detected temperature and the second detected temperature) and the preset temperature of the refrigerating chamber of the refrigerator at two different moments, calculating the difference between the first detected temperature and the preset temperature (i.e., the first temperature difference) and the difference between the first detected temperature and the second detected temperature (i.e., the second temperature difference), comparing the second temperature difference with a preset constant value, and finally calculating the opening degree of the damper of the refrigerating chamber according to the ratio of the first temperature difference to the second temperature difference and the refrigerating chamber state constant; the opening degree of the air door of the refrigerating chamber is timely adjusted according to the temperature change difference value in the refrigerating chamber and the refrigerating chamber state constant, and then the air outlet quantity of the air door of the refrigerating chamber is controlled, so that the temperature difference of the refrigerating chamber is controlled within a target temperature range, the temperature in the refrigerating chamber is controlled, the refrigerating chamber is more uniform, and finally the temperature of each area in the refrigerating chamber is close.
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 foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic flow chart diagram illustrating a method for controlling a damper of a refrigeration compartment according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for obtaining an operating time period of a refrigerator compartment damper according to an embodiment of the present application;
FIG. 3 is a flowchart illustrating a method after the opening of the refrigerating chamber damper is set to K3 according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a method before obtaining the first temperature difference according to an embodiment of the present application.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Because the air door of the traditional air-cooled refrigerator only has two states of full opening and full closing, the air door cannot control and adjust the air supply quantity, the temperature fluctuation of the refrigerating chamber is large, the time delay of controlling the temperature in the refrigerating chamber is caused, and the problem of non-uniformity of the temperature in the refrigerating chamber is caused.
In view of the above problems, the embodiment of the application provides a refrigerating chamber air door control method, which can make the temperature in a refrigerating chamber more uniform.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart diagram illustrating a method for controlling a refrigerator compartment damper according to an embodiment of the present application.
Referring to fig. 1, an embodiment (embodiment one) of the refrigerating compartment damper control method in the embodiment of the present application includes:
101. acquiring a first temperature difference value, wherein the first temperature difference value is the difference value between a first detection temperature and a preset temperature, and the first detection temperature is the temperature detected in the refrigerating chamber;
in this embodiment, the first detected temperature is a temperature detected in the refrigerating chamber, and the preset temperature is a refrigerating temperature set by a user in the refrigerating chamber according to a requirement, that is, a temperature required to be set for preservation; whether the temperature in the refrigerating chamber reaches the target temperature value or not can be judged according to the detected temperature in the refrigerating chamber and the set refrigerating temperature in the refrigerating chamber, and whether the refrigerating chamber has a refrigerating requirement or not can be determined according to a comparison result.
In practical application, the temperature in a refrigerating chamber of a household refrigerator is generally set to be 2-10 ℃, and the default temperature in the refrigerating chamber is 4 ℃; in the default refrigerating chamber temperature, the effect of keeping most of food fresh can be realized, and the temperature is a temperature suitable for preservation; in addition, the temperature in the freezer compartment of a domestic refrigerator is between-18 ℃ and-24 ℃; the cold energy in the refrigerating chamber of the refrigerator is transmitted from the freezing chamber through a damper to maintain the temperature in the refrigerating chamber; in essence, the temperature in the refrigerating chamber is detected by a temperature sensor, the refrigerating requirement is judged according to the temperature in the refrigerating chamber, and then the refrigerating capacity is conveyed to the refrigerating chamber in an off-type mode from the freezing chamber through a program control fan and an air door to maintain the temperature in the refrigerating chamber; for example, the temperature in the refrigerating chamber is set to be 4 ℃, when the temperature in the refrigerating chamber reaches more than 6 ℃, after the refrigerating requirement in the refrigerating chamber is determined, the air door is opened, and the cold energy is output from the freezing chamber into the refrigerating chamber to realize cooling; meanwhile, as the temperature in the refrigerating chamber is reduced, a temperature sensor arranged in the refrigerating chamber is arranged at a certain position in the refrigerating chamber, and the temperature detected by the temperature sensor is the temperature of the certain position in the refrigerator; therefore, the cooling capacity in the refrigerating chamber is not uniformly distributed; it is worth noting that when the air door is fully opened, the temperature in the refrigerating chamber can be reduced quickly, and when the temperature sensor detects that the temperature reaches the set temperature, the air door can be closed; when the temperature sensor detects that the temperature in the refrigerating chamber is lower than the set temperature, the temperature in the refrigerating chamber is not uniform for each area due to inertia added to the temperature drop in the refrigerating chamber.
In addition, after obtaining the first detected temperature and the preset temperature, in order to further utilize the two basic data, a difference value between the first detected temperature and the preset temperature needs to be calculated, where the difference value is a temperature value of the difference between the first detected temperature and the preset temperature, that is, an absolute value of the first detected temperature minus the preset temperature, or an absolute value of the preset temperature minus the first detected temperature; and taking the difference value between the first detection temperature and the preset temperature as a first temperature difference value, wherein the first temperature difference value is a comparison temperature threshold value in the method. In summary, it can be determined that detecting the temperature in the refrigerating chamber and obtaining the temperature in the refrigerating chamber (i.e. the first detected temperature) and the preset temperature by the temperature sensor are key steps for solving the technical problem, and are basic conditions of the technical solution.
102. Acquiring a second temperature difference value, wherein the second temperature difference value is the difference value between a second detection temperature and the first detection temperature, and the second detection temperature is the temperature of the refrigerating chamber detected again at an interval of a first preset time length after the first detection temperature is detected;
in this embodiment, in order to intuitively know the change condition of the temperature in the refrigerating chamber in each time interval, the second detected temperature and the first detected temperature need to be further processed, that is, a difference value between the second detected temperature and the first detected temperature is calculated, where the difference value is an absolute value obtained by subtracting the second detected temperature from the first detected temperature, or an absolute value obtained by subtracting the first detected temperature from the second detected temperature; in order to facilitate subsequent utilization of the temperature in the refrigerating chamber, the calculated difference is further processed, and the difference is used as a second temperature difference which is a reference value for adjusting the opening degree of the air door.
In addition, the second detection temperature refers to that after the temperature sensor acquires the primary temperature value in the refrigerating chamber, the secondary temperature value in the refrigerating chamber is acquired again at intervals of a first preset time; the first preset time length refers to the setting of the temperature sensor, namely acquiring the temperature value in the refrigerating chamber every N seconds; the N is set by a user, the smaller the value of the N is, the more the detection times are, the more accurate the detection result is, and in addition, the N is a natural number greater than 0; in terms of time, the temperature value in the two adjacent refrigerating chambers is referred to as a first detection temperature, and the temperature value in the latter refrigerating chamber is referred to as a second detection temperature.
103. Judging whether the second temperature difference value is smaller than or equal to a preset constant value, if so, setting the opening of the refrigerating chamber air door to be K1; if not, setting the opening of the refrigerating chamber air door to be K2; wherein K1 is determined according to the ratio of the first temperature difference and the second temperature difference and the refrigerating chamber state constant, and K1 and K2 are complementary.
In practical application, the state constant of the refrigerating chamber is obtained by fitting test data in a laboratory through refrigerators of different models; among them, the influence factors of the refrigerating chamber state constant are: the volume of a refrigerating chamber of the refrigerator, the air quantity of a fan of the refrigerating chamber, the rated working condition running frequency of a compressor and the default set temperature of the refrigerator; in the testing process, a relevant data curve is comprehensively simulated according to the factors, and a relevant refrigerating chamber state constant is determined.
In this embodiment, in order to achieve uniform temperature in the refrigerating chamber and control the overall temperature difference in the whole refrigerating chamber within a preset temperature difference, the obtained temperature values need to be further compared and calculated for determining an optimal temperature difference value; the preset constant value is a constant value for measuring the temperature rise rate of the refrigeration sensor under different environmental temperature conditions, the constant value is referred to as a b value for short, namely the b value can be used as a reference value for defining the temperature change of the refrigeration chamber; in this case, the reference value (i.e. the value of b) is generally between 0.2 ℃ and 0.5 ℃; when the temperature change in the refrigerating chamber is too large, if other means are not used for controlling (such as adjusting a refrigerating air door), the temperature in the refrigerating chamber is too high or too low, and further the temperature fluctuation in the refrigerating chamber is too large, so that the transmission of cold energy is required to be adjusted by controlling the opening degree of the refrigerating chamber air door, and further the temperature in the refrigerating chamber is controlled; when the temperature in the refrigerating chamber exceeds a certain value, the temperature change in the refrigerating chamber is too large, and the opening degree of the air door needs to be adjusted.
Specifically, the second temperature difference is compared with the preset constant value, and if the second temperature difference is smaller than or equal to the preset constant value, a result calculated by using a first formula is used as the opening value K1 of the damper, where the first formula is:
in addition, for further solving the completeness of the technical scheme, the opening of the refrigerating chamber air valve is determined according to the comparison result; therefore, there are three and only three comparison results, two of which are (i.e., the second temperature difference is less than or equal to the predetermined constant value): comparing the second temperature difference value with the preset constant value, and if the second temperature difference value is smaller than or equal to the preset constant value, adopting a formula two to calculate a result as an opening value K2 of the adjusting air door, wherein the formula two is as follows:
k1 and K2 each represent an opening value of a damper adjustment, Δ T1 is a first temperature difference value, Δ T2 is a second temperature difference value, and m and n are refrigerator compartment state constants. In this example, when the refrigeration sensor temperature difference Δ T2 increases, the refrigeration damper is closed small, and when the refrigeration sensor temperature difference Δ T2 decreases, the refrigeration damper is increased, thereby controlling the temperature of the refrigeration compartment to fluctuate within a certain interval range; wherein, m and n are constant values obtained by fitting a curve obtained after drawing processing according to experimental data, and the constant values are reference values obtained by calculating processing according to differences in the aspects of the overall consistency of the refrigerator, the heat preservation capability of the refrigerator type, the refrigerating volume and the like; therefore, the temperature variation values of different refrigerators are different, i.e. m, n fluctuate within a certain range, such as: when m is 10 and n is 10, when Δ T1 is 1 and Δ T2 is 0.5, that is, K1 is 60 ° and K2 is 30 °; it can be seen that the refrigerating compartment damper opening degree increases as Δ T1 increases, and decreases as Δ T2 increases.
In this embodiment, another embodiment can also be extended, such as:
obtaining a refrigerating chamber starting reference value, wherein the refrigerating chamber starting reference value is a value obtained by adding a constant value to an initial temperature value of a refrigerating chamber when the refrigerating chamber operates for the first time; judging whether the refrigerating chamber starting reference value is smaller than or equal to the first temperature difference value or not according to the refrigerating chamber starting reference value; if yes, the refrigerating chamber air door opening is set to be K3, and K3 is larger than or equal to 90 degrees; if not, executing the step of judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value or not and whether the first temperature difference value is larger than or equal to the refrigerating chamber initial temperature value or not. Correspondingly, the method further comprises the following steps: judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value or not according to the refrigerating chamber starting reference value, and meanwhile, judging whether the first temperature difference value is larger than or equal to the refrigerating chamber initial temperature value or not; if so (i.e., both conditions are satisfied), executing the step of determining whether the second temperature difference is less than or equal to a preset constant value (i.e., re-executing); if not, the opening degree of the current refrigerating chamber air door is kept unchanged. It is to be noted that, after the refrigerating chamber damper opening is set to K3, the method further includes: acquiring the working time of the air door of the refrigerating chamber; judging whether the working time of the refrigerating chamber air door is longer than the preset time by a second preset time; and if so, setting the opening of the refrigerating chamber air door to be M, wherein the M is the initial opening value of the refrigerating chamber air door.
For example, 1: after determining the first temperature difference (i.e. the difference between the temperature in the refrigerating chamber and the preset temperature), in order to rapidly reduce the temperature in the refrigerating chamber to the preset temperature, a refrigerating chamber startup reference value needs to be obtained, where the refrigerating chamber startup reference value is a temperature threshold value obtained by adding a constant a value to an initial temperature value of the refrigerating chamber; the initial temperature value of the refrigerating chamber is a temperature value when the refrigerating chamber is started, and the constant a value is a hysteresis temperature difference value generated by the temperature rise or the temperature fall of the refrigerating chamber; in addition, the temperature difference value generally does not exceed 0.5 ℃ (constant a value), and the refrigerating chamber startup reference value is a value obtained by adding 0.5 ℃ to the initial temperature value of the refrigerating chamber; it should also be noted that when the refrigerator is in the first-time start-up state, the compartment thermal load is large, and the refrigeration damper needs to be fully opened to allow the compartment to be rapidly cooled.
It should also be noted that, after the air door is opened, the refrigerating air door is adjusted according to the difference value of the temperature change of the refrigerating sensor, and when the refrigerating air door needs to be fully opened to rapidly cool the compartment, the refrigerating request after the refrigerator is powered on for the first time or is powered on again under the condition of long-time power failure can be met; therefore, in order to distinguish the temperatures in different cases, a value is set; in addition, because the refrigerator is electrified for the first time or electrified after being powered off for a long time, the refrigerating chamber and the freezing chamber of the refrigerator are close to the ambient temperature (namely, the environmental temperature range of the refrigerator in normal use is 10-43 ℃), and the preset temperature of the refrigerating chamber is between 2 ℃ and 8 ℃; therefore, when the first temperature difference is larger than or equal to 2 ℃, if the first temperature difference is larger than or equal to the initial temperature value plus the value a, the initial temperature value plus the value a must be equal to 2; in general, the initial temperature value can be 0.5 ℃ or 1 ℃, and the air door of the refrigerating chamber of the refrigerator can be reset and fully opened after the conditions are met; if the value a is far smaller than the set value, the conditions that the refrigerating chamber has refrigerating requirements and the refrigerating air door is not automatically adjusted along with refrigerating temperature difference after being opened under the normal refrigerating state can occur; after the refrigerating chamber starting reference value (namely the initial temperature value of the refrigerating chamber and a constant a value) is determined, the temperature in the refrigerating chamber needs to be specifically judged to be reduced or heated; therefore, the refrigerating chamber starting reference value is compared with the first temperature difference value, and the first temperature difference value refers to the difference value between the first detection temperature and the preset temperature; whether to fully open the damper or close the damper is determined by comparing the first temperature difference value with the refrigerating compartment startup reference value.
In practical application, when the first temperature difference value is equal to the initial temperature value minus the preset temperature and equal to the set starting temperature, the compressor starts to operate; in addition, when the temperature of the freezing chamber does not rise to the set temperature when the refrigerator is started, the compressor can not be started even if the refrigerating chamber meets the conditions; in addition, when the refrigerator is powered on for the first time or powered on again under the condition of long-time power failure, and the temperatures of the refrigerating chamber and the freezing chamber are both higher, namely the first temperature difference is larger than the initial temperature value, but the first temperature difference of the latter is far larger than the first temperature difference of the former in the normal refrigerating shutdown state.
For example, 2: when the starting time of the refrigerator is shorter than the last starting time, the initial temperature value of the refrigerating chamber is lower, and the starting reference value of the refrigerating chamber is close to the first temperature difference value; when the starting time of the refrigerator is longer than the last starting time, the initial temperature value of the refrigerating chamber is higher, and the starting reference value of the refrigerating chamber is larger than the first temperature difference value; determining the opening degree of an air door of the refrigerating chamber according to the comparison result of the refrigerating chamber starting reference value and the first temperature difference value; that is, if the refrigerating chamber start-up reference value is less than or equal to the first temperature difference value, setting a refrigerating chamber damper opening degree as K3, where K3 is a damper opening degree value of the refrigerating chamber, and the opening degree value is determined according to a maximum value of a damper opening degree design; the K3 is an opening value greater than or equal to 90 degrees; or, when the refrigerating chamber startup reference value is less than or equal to the first temperature difference value, it indicates that the temperature in the refrigerating chamber has not yet reached the preset temperature value, and therefore, it is necessary to set the opening degree of the damper of the refrigerating chamber to a larger opening degree value, that is, at least 90 ° and less than or equal to 180 °.
It should be noted that, in the above situation, the purpose of setting the opening of the refrigerating chamber damper to the minimum value is to make the refrigerating chamber damper not work any more, reduce the energy consumption of the refrigerating chamber, and at the same time, keep the current cold energy operation, cool the refrigerating chamber, and reduce the energy loss of the damper.
FIG. 2 is a schematic flow chart illustrating a method for obtaining the operating time of the refrigerator compartment damper according to an embodiment of the present application.
Referring to fig. 2, an embodiment (embodiment four) of the method for controlling the opening degree of the refrigerating chamber damper in the embodiment of the present application, after obtaining the operation time period of the refrigerating chamber damper, includes:
201. acquiring the adjusting times of the opening degree of the air door;
in this embodiment, after the working time of the air door of the refrigerating chamber is obtained, the adjustment times of the opening degree of the air door needs to be calculated, recorded and obtained; the adjusting times of the opening degree of the air door are the total adjusting times of the opening degree of the air door each time, after the adjusting times of the opening degree of the air door are obtained, the adjusting times of the opening degree of the air door are compared with the preset times, and the opening degree of the air door is adjusted again according to the comparison result to prevent the air door from being frozen; namely, if the adjusting times of the opening degree of the air door is less than the preset times, setting the opening degree of the air door of the refrigerating chamber to be J, wherein the J is more than 0 degree and less than or equal to 10 degrees; the preset times are the times that the air door needs to be adjusted at least within a certain time period set by a user.
It should also be noted that the preset number is set to 2, which is the number set by the user.
202. Judging whether the adjusting times of the opening degree of the air door is less than the preset times or not;
in this embodiment, in order to further implement the technical method, the obtained adjusting times of the refrigerating chamber damper needs to be compared with preset times, and the opening degree of the damper of the refrigerating chamber damper is determined to be readjusted according to the comparison result, so as to prevent the damper from being frozen; the preset number is more than the upper limit of the air door adjusting number set by a user; in practical applications, the preset number of times of the refrigerating compartment damper is generally set to 2 times.
It should be noted that after the action times of the opening degree of the air door is compared with the preset times, the stop temperature in the refrigerating chamber needs to be obtained, and the stop temperature is the temperature difference allowed in the refrigerating chamber, namely, the opening degree of the air door of the refrigerating chamber is not adjusted within the allowed temperature difference.
In addition, after the action times of the opening degree of the air door is compared with the preset times, if the adjustment times of the opening degree of the air door is greater than or equal to the preset times, and when the first temperature difference value is equal to the stop temperature, the adjustment times of the air door is greater than the preset times, the first temperature difference value (namely, the difference value of the first detection temperature and the preset temperature) is equal to the stop temperature (namely, the temperature difference temperature allowed in the refrigerating chamber), the air door of the refrigerating chamber does not need to be adjusted, the opening degree of the refrigerating chamber is set to be 0 degrees, and the air door of the refrigerating chamber is closed.
203. If yes, setting the opening degree of the air door of the refrigerating chamber to J, wherein J is larger than 0 degrees and smaller than or equal to 10 degrees.
In this embodiment, in order to further implement the technical method, the obtained adjusting times of the refrigerating chamber damper needs to be compared with preset times, and the opening degree of the damper of the refrigerating chamber damper is determined to be readjusted according to the comparison result, so as to prevent the damper from being frozen; that is, when the adjustment times of the opening degree of the damper is less than the preset times, it indicates that the adjustment times of the damper of the refrigerating chamber is low, and the damper is likely to be frozen, so that the opening degree of the damper needs to be finely adjusted, ice cubes attached to the damper are removed, and the damper is prevented from being completely frozen; thus, the damper opening of the refrigerating compartment is set to J, which is between 0 ° and 10 °; namely, adjusting the opening degree of the air door to be 0-10 degrees; in addition, if the adjusting times of the opening degree of the air door are greater than or equal to the preset times, namely the adjusting times of the air door of the refrigerating chamber are less, the temperature in the refrigerating chamber needs to be further judged, namely whether the stopping temperature is equal to the first temperature difference value is judged; if yes, closing the air door of the refrigerating chamber; if not, the step of obtaining the first temperature difference value is executed.
It should also be noted that after the opening of the damper of the refrigerating chamber is set to J, in order to further prevent the damper from being frozen, the adjustment time length when the opening of the damper of the refrigerating chamber is J needs to be recorded, that is, when the adjustment time length when the opening of the damper of the refrigerating chamber is J reaches G, a reset signal is sent; the reset signal means that the opening degree of the air door of the refrigerating chamber needs to be reset to the originally set opening degree of the air door, so that the air door is prevented from being frozen; wherein, in order to rapidly achieve the effect of preventing the air door from being frozen during deicing, G is larger than 0 and smaller than 10 s.
Fig. 3 is a schematic flowchart of a method after obtaining the first temperature difference according to an embodiment of the present disclosure.
Referring to fig. 3, an embodiment (embodiment three) of the method for controlling the opening degree of the refrigerating chamber wind in the embodiment of the present application, after setting the opening degree of the refrigerating chamber wind to K3, includes:
301. acquiring the working time of the air door of the refrigerating chamber;
in the embodiment, in order to prevent the air door from being frozen in long-time operation, the air door cannot be adjusted when the opening degree of the air door needs to be adjusted; therefore, in order to solve the problem, after the opening of the refrigerating chamber air door is set to be K, the working duration of the refrigerating chamber air door needs to be calculated, recorded and obtained, and the obtained working duration is compared with the preset time to determine the opening value of the air door to be adjusted again; the preset time is experience time of icing time of the air door of the refrigerating chamber.
In practical application, the working time of the refrigerating chamber air door is obtained by a timer.
302. Judging whether the working time of the refrigerating chamber air door is longer than a second preset time;
in this embodiment, to further implement the technical method, the relationship between the operating duration of the refrigerating chamber damper and a second preset duration is determined, the obtained operating duration of the refrigerating chamber damper needs to be compared with the second preset duration, and the damper opening of the refrigerating chamber damper is determined according to the comparison result; and the second preset time length is the default working time length of the system, and the working time length is the experience time length obtained by machine learning of the system.
In practical applications, the operation time of the refrigerating chamber air door depends on the time for which the refrigerator can be operated, and the second preset time is 12 hours at all.
303. And if so, setting the opening of the refrigerating chamber air door to be M, wherein the M is the initial opening value of the refrigerating chamber air door.
In this embodiment, to further determine the opening value of the damper of the refrigerating chamber, the operating time of the damper of the refrigerating chamber is compared with a second preset time, and if the operating time of the damper of the refrigerating chamber is greater than the second preset time, the opening of the damper of the refrigerating chamber is set to M; the method comprises the following steps that (1) an initial air door opening value of the M refrigerating chamber is set, namely the air door opening of the refrigerating chamber is set to be an air door opening value initially set by a system; in addition, if the working time of the refrigerating chamber air door is less than or equal to a second preset time, that is, the running time of the refrigerating chamber air door is not long, the temperature of the refrigerating chamber needs to be continuously detected, that is, whether the stopping temperature is equal to the first temperature difference value needs to be judged; if yes, closing the air door of the refrigerating chamber; if not, the step of obtaining the first temperature difference value is executed.
Fig. 4 is a flowchart illustrating a method before acquiring the first detected temperature and the preset temperature according to an embodiment of the present application.
Referring to fig. 4, an embodiment (embodiment four) of the refrigerating compartment damper control method in the embodiment of the present application, before acquiring the first detected temperature and the preset temperature, includes:
401. acquiring a freezing detection temperature, wherein the freezing detection temperature is a detected temperature in a freezing chamber;
in this embodiment, in addition to the damper control of the refrigerating chamber, that is, before the first detected temperature and the preset temperature are obtained in the refrigerating chamber, since the cooling capacity in the refrigerating chamber is transmitted through the freezing chamber, the post-energy consumption control of the freezing chamber is also required, in order to prevent the excessive energy consumption of the freezing chamber, the freezing detected temperature in the freezing chamber needs to be obtained, and whether the freezing chamber needs to be stopped or not is further determined through the freezing detected temperature.
In practical application, the freezing detection temperature is obtained by a temperature sensor.
402. Judging whether the freezing detection temperature is less than or equal to the preset freezing temperature or not;
in this embodiment, in order to further determine whether the operation of the freezing chamber needs to be stopped, the freezing detection temperature needs to be compared with a preset freezing temperature, and the freezing chamber is determined to be processed according to a comparison result; wherein the preset freezing temperature is a default freezing temperature in the refrigerator system, and the preset freezing temperature can be adjusted and changed by changing the system setting.
In practice, the predetermined freezing temperature is generally between-18 ℃ and-24 ℃.
403. If yes, the compressor is closed; if not, the compressor is started.
In this embodiment, if the detected freezing temperature is less than or equal to the preset freezing temperature, the compressor is turned off, otherwise, the compressor is turned on. In order to further determine the control of the freezing chamber, the freezing chamber needs to be controlled according to the comparison result of the freezing detection temperature and the preset freezing temperature; that is, when the detected freezing temperature is less than or equal to the preset freezing temperature, it indicates that the temperature in the freezing chamber is lower than the preset freezing temperature, and the compressor in the freezing chamber needs to be turned off, thereby achieving the purpose of reducing energy consumption.
In addition, when the freezing detection temperature is greater than the preset freezing temperature, it indicates that the temperature of the freezing chamber does not reach the preset temperature, and the compressor in the freezing chamber needs to be started to reduce the temperature.
Corresponding to the embodiment of the application function implementation method, the application also provides a refrigerating chamber air door control system, which comprises:
an acquisition unit and a processing unit; the acquisition unit is used for acquiring the temperatures of the refrigerating chamber and the freezing chamber, acquiring the adjusting times of the air door of the refrigerating chamber and acquiring the air door operating time of the refrigerating chamber after the air door is adjusted; the processing unit is used for executing the refrigerating chamber damper control method in any one of the above modes and controlling the refrigerating chamber damper according to the method.
In practical application, the temperature of the refrigerating chamber is obtained through a temperature sensor, the adjusting times of the air door of the refrigerating chamber are recorded through a computer, and the running time of the air door of the refrigerating chamber after the air door is adjusted is recorded; meanwhile, the system controls the stepping motor according to the method, and further controls the air door of the refrigerating chamber through the stepping motor; namely, according to the refrigerating chamber damper control method, the opening degree of the damper is controlled, and particularly, the opening degree of the refrigerating chamber damper is adjusted through a stepping motor.
It should be noted that the stepping motor is a motor for converting an electric pulse signal into a corresponding angular displacement or linear displacement, that is, the stepping motor rotates a rotor by an angle or one step every time a pulse signal is input, the output angular displacement or linear displacement is proportional to the input pulse number, and the rotating speed is proportional to the pulse frequency.
Corresponding to the embodiment of the application function implementation method, the application also provides electronic equipment and a corresponding embodiment.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
Furthermore, the method according to the present application may also be implemented as a computer program or computer program product comprising computer program code instructions for performing some or all of the steps of the above-described method of the present application.
Alternatively, the present application may also be embodied as a non-transitory machine-readable storage medium (or computer-readable storage medium, or machine-readable storage medium) having stored thereon executable code (or a computer program, or computer instruction code) which, when executed by a processor of an electronic device (or electronic device, server, etc.), causes the processor to perform part or all of the various steps of the above-described method according to the present application.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the applications disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems and methods according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A method of controlling a damper for a refrigeration compartment, comprising:
acquiring a first temperature difference value, wherein the first temperature difference value is the difference value between a first detection temperature and a preset temperature, and the first detection temperature is the temperature detected in the refrigerating chamber;
acquiring a second temperature difference value, wherein the second temperature difference value is the difference value between a second detection temperature and the first detection temperature, and the second detection temperature is the temperature of the refrigerating chamber detected again at an interval of a first preset time length after the first detection temperature is detected;
judging whether the second temperature difference value is smaller than or equal to a preset constant value, if so, setting the opening of the refrigerating chamber air door to be K1; if not, setting the opening of the refrigerating chamber air door to be K2; wherein K1 is determined according to the ratio of the first temperature difference and the second temperature difference and the refrigerating chamber state constant, and K1 and K2 are complementary.
2. The method of controlling a damper for a refrigeration compartment of claim 1, wherein before said determining whether said second temperature difference is less than or equal to a predetermined constant value, further comprising:
obtaining a refrigerating chamber starting reference value, wherein the refrigerating chamber starting reference value is a value obtained by adding a constant value to an initial temperature value of a refrigerating chamber when the refrigerating chamber operates for the first time;
judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value or not, and whether the first temperature difference value is larger than or equal to the refrigerating chamber initial temperature value or not;
if yes, executing the step of judging whether the second temperature difference value is smaller than or equal to a preset constant value;
if not, the opening degree of the current refrigerating chamber air door is kept unchanged.
3. The method of controlling a door of a refrigerator compartment of claim 2, wherein said determining whether the refrigerator compartment power-on reference value is greater than the first temperature difference value comprises:
judging whether the refrigerating chamber starting reference value is smaller than or equal to the first temperature difference value or not;
if yes, the refrigerating chamber air door opening is set to be K3, and K3 is larger than or equal to 90 degrees;
if not, executing the step of judging whether the refrigerating chamber starting reference value is larger than the first temperature difference value or not and whether the first temperature difference value is larger than or equal to the refrigerating chamber initial temperature value or not.
4. The refrigerating compartment damper control method as claimed in claim 2, further comprising, after setting the refrigerating compartment damper opening to K3:
acquiring the working time of the air door of the refrigerating chamber;
judging whether the working time of the refrigerating chamber air door is longer than the preset time by a second preset time;
and if so, setting the opening of the refrigerating chamber air door to be M, wherein the M is the initial opening value of the refrigerating chamber air door.
5. The method of controlling a refrigerating compartment damper according to claim 4, wherein the step of obtaining the operating time period of the refrigerating compartment damper further comprises:
acquiring the adjusting times of the opening degree of the air door;
judging whether the adjusting times of the opening degree of the air door is less than the preset times or not;
if yes, setting the opening degree of the air door of the refrigerating chamber to J, wherein J is larger than 0 degrees and smaller than or equal to 10 degrees.
6. The refrigerating compartment damper control method according to claim 5, further comprising, after setting the damper opening degree of the refrigerating compartment to J:
obtaining a stop temperature, wherein the stop temperature is the temperature difference allowed in the refrigerating chamber;
judging whether the adjusting times of the opening degree of the air door is greater than or equal to the preset times or not, and judging whether the first temperature difference value is equal to the stopping temperature or not;
if yes, setting the opening of the refrigerating chamber air door to be 0 degree;
if not, judging whether the refrigerating chamber starting reference value is smaller than or equal to the first temperature difference value.
7. The method of controlling a fresh food compartment damper of claim 1, wherein said obtaining a first temperature differential further comprises:
acquiring a freezing detection temperature, wherein the freezing detection temperature is the temperature detected in a freezing chamber;
judging whether the freezing detection temperature is less than or equal to the preset freezing temperature or not;
if yes, the compressor is closed; if not, the compressor is started.
8. The refrigerating compartment damper control method according to claim 5, further comprising, after setting the damper opening degree of the refrigerating compartment to J:
recording the adjustment time length after the opening of the air door of the refrigerating chamber is J;
when the adjusting time length reaches G, setting the opening degree of the air door of the refrigerating chamber to be M again; the G is less than 10 s.
9. The refrigerating compartment damper control method as set forth in claim 1, wherein:
the calculation formula of K1 is as follows:
the calculation formula of K2 is as follows:
wherein the K1 and K2 represent opening values of damper adjustment, the Δ T1 represents a first temperature difference, the Δ T2 represents a second temperature difference, and the m and n are refrigerator compartment state constants.
10. A refrigeration compartment damper control system, comprising:
an acquisition unit and a processing unit;
the acquisition unit is used for acquiring the temperatures of the refrigerating chamber and the freezing chamber, acquiring the adjusting times of the air door of the refrigerating chamber and acquiring the air door operating time of the refrigerating chamber after the air door is adjusted;
the processing unit is configured to perform the method of any of claims 1-9 and to control the refrigeration compartment damper in accordance therewith.
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Application publication date: 20211228 |