CN114279162A - Control method and device of air-cooled refrigerator and refrigerator - Google Patents
Control method and device of air-cooled refrigerator and refrigerator Download PDFInfo
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- CN114279162A CN114279162A CN202111628250.6A CN202111628250A CN114279162A CN 114279162 A CN114279162 A CN 114279162A CN 202111628250 A CN202111628250 A CN 202111628250A CN 114279162 A CN114279162 A CN 114279162A
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Abstract
The invention provides a control method and a control device of an air-cooled refrigerator and the refrigerator, relates to the technical field of air-cooled refrigerators and solves the technical problems that when freezing refrigeration is close to a shutdown point, an electric air door is opened, the cold energy of a freezing chamber is transferred to refrigeration, so that the freezing refrigeration is not stopped for a long time easily, and the power consumption is increased. The control method comprises the steps of determining the temperature change rate of a freezing chamber according to the temperature change of the freezing chamber in a preset time period; if the temperature change rate of the freezing chamber is smaller than a preset threshold value, a cold air flow path between the freezing chamber and the refrigerating chamber is cut off, and when the freezing chamber reaches a set freezing temperature, the refrigerating is normally controlled. After the control method of the air-cooled refrigerator is adopted, when freezing refrigeration is close to a shutdown point, the electric air door is not directly opened to transmit the cold energy of the freezing chamber to the refrigerating chamber, but the freezing refrigeration performance is judged firstly, and the electric air door is closed when the freezing refrigeration performance is poor, so that freezing can be continuously and rapidly cooled, the normal shutdown of freezing is ensured, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of air-cooled refrigerators, in particular to a control method and device of an air-cooled refrigerator and a refrigerator.
Background
The existing single-system air-cooled refrigerator generally comprises a main control board, a control panel, a compressor, a freezing fan, an electric air door, a sensor and the like, because only one compressor is provided, in order to realize the independent control of the temperature of different compartments, the prior art generally controls the start and stop of the compressor by taking freezing as a priority, and the cold energy entering a refrigerating chamber is transmitted to the refrigerating chamber through the electric air door.
In the operation process of the existing refrigerator, a user can directly enter an energy-saving mode through touch control of a display panel, or the refrigerator can automatically enter the energy-saving mode after running for a period of time at a specific environment temperature. In the energy saving mode, the refrigerator controls the opening of the electric damper in the cold storage chamber to transfer cold in the freezing chamber to the cold storage chamber when the freezing chamber is in the refrigerating process and is close to the stop point. Because the freezing chamber divides a part of cold energy to be supplied to the refrigerating chamber, the cooling speed of the freezing chamber is slowed, the temperature of the freezing chamber is not easy to reach the set freezing temperature, the freezing chamber is easy to freeze for a long time without stopping, and the power consumption is increased.
Disclosure of Invention
The invention aims to provide a control method and a control device of an air-cooled refrigerator and the refrigerator, which at least solve the technical problems that in the prior art, when freezing refrigeration is close to a shutdown point, an electric air door is opened, the cold energy of a freezing chamber is transferred to refrigeration, so that the long-time non-shutdown of freezing is easily caused, and the power consumption is increased. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a control method of an air-cooled refrigerator, which comprises the following steps:
in the case of the energy-saving mode,
if the freezing chamber is in a refrigerating state, determining the temperature change rate of the freezing chamber according to the temperature change of the freezing chamber in a preset time period;
and if the temperature change rate of the freezing chamber is smaller than a preset threshold value, a cold air flow path between the freezing chamber and the refrigerating chamber is disconnected, and when the freezing chamber reaches the set freezing temperature, the refrigerating is normally controlled.
Optionally, if the temperature change rate of the freezing chamber is greater than a preset threshold value, normally controlling refrigeration.
Optionally, the normally controlled refrigeration comprises: and controlling the on-off of the cold air flow path according to the temperature of the refrigerating chamber.
Optionally, the controlling the on-off of the cold air flow path according to the temperature of the refrigerating chamber includes obtaining the temperature of the refrigerating chamber, and opening the cold air flow path when the temperature of the refrigerating chamber is greater than a set temperature threshold.
Optionally, the determining a temperature change rate of the freezing chamber according to a temperature change of the freezing chamber within a preset time period includes:
and acquiring the starting temperature and the end temperature of the freezing chamber in a preset time period, and calculating the temperature change rate of the freezing chamber.
Alternatively, the temperature of the freezing chamber is detected by a freezing temperature sensor.
Optionally, the switch of the electric damper between the freezing chamber and the refrigerating chamber is controlled to realize the on-off of the cold air flow path.
The invention provides a control device of a refrigerator, which comprises:
the determining module is used for determining the temperature change rate of the freezing chamber;
and the control module is used for cutting off a cold air flow path between the freezing chamber and the refrigerating chamber when the temperature change rate of the freezing chamber is smaller than a preset threshold value.
The invention provides a refrigerator, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any of claims 1-8.
Optionally, the refrigerator is a single-system air-cooled refrigerator and comprises a freezing chamber, a non-freezing chamber, a freezing temperature sensor arranged in the freezing chamber and a refrigerating temperature sensor arranged in the refrigerating chamber;
the freezing temperature sensor is used for detecting the starting point temperature and the end point temperature of the freezing chamber in a preset time period; the refrigerating temperature sensor is used for detecting the temperature of the refrigerating chamber.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
under the freezing starting state, the first temperature and the second temperature of the freezing chamber are obtained, the unit time change rate of the temperature of the freezing chamber is determined, and the unit time change rate is compared with a preset value to judge the freezing performance, so that the cold quantity distribution of the freezing chamber and the non-freezing chamber is controlled. After the energy-saving control method of the air-cooled refrigerator is adopted, when freezing refrigeration approaches a shutdown point, the electric air door cannot be directly opened to transmit the cold energy of the freezing chamber to the refrigerating chamber, the freezing refrigeration performance is judged firstly, if the temperature change rate of the freezing chamber is smaller than a preset threshold value and the freezing performance is represented to be poor, a cold air flow path between the freezing chamber and the refrigerating chamber is disconnected, the cold energy is accumulated in the freezing chamber, the temperature of the freezing chamber is ensured to be continuously and stably reduced, and the refrigerating refrigeration is normally controlled when the temperature of the freezing chamber reaches a set freezing temperature.
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 invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a control method of an air-cooled refrigerator according to an embodiment of the present invention;
FIG. 2 is a flow chart of another method for controlling an air-cooled refrigerator according to an embodiment of the present invention;
FIG. 3 is a graph of the variation of refrigerator power, refrigeration temperature and freezing temperature over time in accordance with the present invention;
fig. 4 is a schematic diagram of a refrigerator control method according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
as shown in fig. 1, the present invention provides a method for controlling an air-cooled refrigerator, the method comprising:
s11, in the energy-saving mode, if the freezing chamber is in a refrigerating state, determining the temperature change rate of the freezing chamber according to the temperature change of the freezing chamber in a preset time period;
and S12, if the temperature change rate of the freezing chamber is smaller than a preset threshold value, cutting off a cold air flow path between the freezing chamber and the refrigerating chamber, and normally controlling the refrigeration when the freezing chamber reaches a set freezing temperature.
After the energy-saving control method of the air-cooled refrigerator is adopted, when freezing refrigeration approaches a shutdown point, the electric air door cannot be directly opened to transmit cold energy of the freezing chamber to the refrigerating chamber, the freezing refrigeration performance is judged firstly, if the temperature change rate of the freezing chamber is smaller than a preset threshold value, the characteristic freezing performance is poor, a cold air flow path between the freezing chamber and the refrigerating chamber is disconnected, the cold energy is supplied to the freezing chamber in a centralized manner, the temperature of the freezing chamber is ensured to continuously and rapidly drop, the refrigeration is normally controlled when the freezing chamber reaches a set freezing temperature, the normal shutdown of freezing is ensured by the mode of controlling whether the freezing chamber is communicated with the refrigerating chamber according to the freezing performance, and compared with the prior art, the compressor can be shut down in advance, and the power consumption is reduced.
In a specific practice, if the temperature change rate of the freezing chamber is greater than a preset threshold value, the refrigeration is normally controlled. When the unit time change rate of the temperature of the freezing chamber is larger than a preset threshold value, the characteristic that the freezing performance is good is shown, and the refrigeration can be normally controlled according to the temperature of the refrigerating chamber. At the moment, the freezing performance is better, the cold energy of the freezing chamber is supplied for refrigeration, and the normal shutdown of freezing can not be influenced.
It is understood that normal control of refrigeration includes: the on-off of the cold air flow path is controlled according to the temperature of the refrigerating chamber.
Specifically, the on-off of the cold air flow path is controlled according to the temperature of the refrigerating chamber, the temperature of the refrigerating chamber is acquired, and then the cold air flow path is opened. When the obtained refrigerating temperature does not reach a customer set value (when the temperature of the refrigerating chamber is greater than a set temperature threshold), a cold air flow path between the freezing chamber and the refrigerating chamber is opened, cold energy is transmitted to the refrigerating chamber from the freezing chamber, and refrigerating is carried out; when the refrigerating temperature reaches the set value of the customer, the cold air flow path between the freezing chamber and the refrigerating chamber is cut off.
In a specific practice, the step S11 includes acquiring a start temperature (first temperature) and an end temperature (second temperature) of the freezing compartment for a preset time period, and calculating a temperature change rate of the freezing compartment.
In particular practice, the temperature of the freezer compartment is detected by a freezer temperature sensor. The temperature of the freezing chamber is measured by the freezing temperature sensor in the freezing chamber, so that the change rate of the freezing temperature sensor per unit time is the change rate of the temperature in the freezing chamber per unit time, and the unit change rate reflects the refrigerating performance of the freezing chamber.
In particular practice, the opening and closing of an electric damper between the freezing chamber and the refrigerating chamber is controlled to open and close the cold air flow path. The electric air door is adopted for control, and the structure is simple and convenient to control.
The invention also provides a control device of the air-cooled refrigerator, which comprises:
the determining module is used for determining the temperature change rate of the freezing chamber;
and the control module is used for cutting off a cold air flow path between the freezing chamber and the refrigerating chamber when the temperature change rate of the freezing chamber is smaller than a preset threshold value.
The present invention also provides a refrigerator including:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of any of the above methods.
Example 2:
the specific embodiment of the invention provides a single-system air-cooled refrigerator. The single-system air-cooled refrigerator comprises a main control board, a control panel, a compressor, a freezing fan, a freezing chamber, a refrigerating chamber, an electric air door, a freezing temperature sensor and a refrigerating temperature sensor.
The external conditions for entering the energy-saving mode are continuously detected by the main control panel, and the external conditions comprise that a user actively touches the display panel, or the refrigerator can enter the energy-saving mode under a specific temperature (such as 16 ℃, 32 ℃ and the like) for a long time and no one frequently opens and closes the door. After entering the energy-saving mode, a signal is sent to the frequency conversion board to control the start and stop of the compressor and control the action of the electric air door, and the control principle is shown in figure 4.
As shown in fig. 2, after the refrigerator is powered on to operate, determining a condition for entering an energy-saving mode, after the condition is met, operating the refrigerator in the energy-saving mode, detecting a freezing temperature sensor, and when a compressor is started, starting to detect a unit time change rate K of the freezing temperature sensor to be (TD2-TD1)/T, wherein TD1 is a first temperature of a freezing chamber, TD2 is a second temperature of the freezing chamber, and T is a unit time (set according to an actual situation), and when K is greater than a specified preset value K1, determining that the refrigerating performance of the freezing chamber of the refrigerator is good, the natural shutdown is not affected, and the normal refrigeration control is performed; when K is smaller than a specified preset value K1, judging that the refrigerating performance of a refrigerating chamber of the refrigerator is poor, possibly stopping the refrigerator naturally, closing the refrigerating chamber immediately, locking cold in the refrigerating chamber, and stopping the refrigerating chamber quickly (the refrigerating chamber has a starting and stopping temperature point, and the compressor is started when the starting point is reached and is closed when the stopping point is reached through the detection of a freezing sensor). And after the freezing shutdown, the refrigeration is restored to normal control, and the circulation operation is performed. Fig. 3 shows the variation of the refrigerator power, the refrigerating temperature and the freezing temperature with time.
In the formula K ═ TD2-TD1)/T, time T is determined according to refrigerator shape, refrigerator volume, in-cabinet load, foam layer thickness, compressor performance, evaporator size, door seal, refrigerant amount, and the like. For example, the temperature of the refrigerator is reduced from-18 ℃ to-21 ℃ within 10min, the K value is 0.3, the preset value of K1 is 0.25, and then K is more than K1, so that the refrigeration effect of the refrigerator is good, and the refrigeration can be normally controlled. In the same stage of freezing and refrigerating, the temperature of the refrigerator is reduced from-18 ℃ to-20 ℃ within 10min, the K value is 0.2, and at the moment, K is less than K1, which indicates that the refrigerator has poor refrigerating effect, and the normal shutdown of the refrigerator is ensured only when the refrigeration is closed, so that the energy consumption is reduced.
The value of the refrigerating K1 value of the refrigerating chamber is smaller and smaller along with the lapse of refrigerating time, and the value is required to be taken according to the actual condition of the performance of the whole machine.
According to the energy-saving control method of the air-cooled refrigerator, under the condition that the energy consumption requirement is high, the refrigerating performance is difficult to reach the standard requirement when the refrigerating operation reaches a certain stage, except for thinking and improvement from external factors, the fastest way is to find the judgment basis of poor refrigerating performance, the judgment basis can be judged by detecting the temperature change rate of the refrigerating sensor, and then the temporary closing operation of the refrigerating is determined, so that the refrigerating capacity can be ensured to be multipoint, the machine can be stopped smoothly, the energy efficiency grade can be improved, the power consumption can be reduced, and the original intention of thinking and solving methods for practical problems is met.
In fact, the temperature change rate of the freezing sensor is detected, and then the freezing execution control is only performed after the compressor is started for a period of time, the freezing chamber is lowered to a certain temperature and then is forced to stop according to an ideal state, the K value is obviously reduced through detection, the freezing is performed and closed when the K value is smaller than a preset value, and cold energy is stored in the freezing chamber, so that the freezing chamber can be stopped in advance, and the energy efficiency is saved.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A control method of an air-cooled refrigerator is characterized by comprising the following steps:
in the case of the energy-saving mode,
if the freezing chamber is in a refrigerating state, determining the temperature change rate of the freezing chamber according to the temperature change of the freezing chamber in a preset time period;
and if the temperature change rate of the freezing chamber is smaller than a preset threshold value, a cold air flow path between the freezing chamber and the refrigerating chamber is disconnected, and when the freezing chamber reaches the set freezing temperature, the refrigerating is normally controlled.
2. The method of claim 1, wherein the refrigerating is normally controlled if a temperature change rate of the freezing chamber is greater than a preset threshold value.
3. The method of claim 1 or 2, wherein the normally controlled refrigeration comprises: and controlling the on-off of the cold air flow path according to the temperature of the refrigerating chamber.
4. The method of claim 3, wherein the controlling the cold air flow path according to the temperature of the refrigerating chamber comprises obtaining the temperature of the refrigerating chamber, and opening the cold air flow path when the temperature of the refrigerating chamber is greater than a set temperature threshold.
5. The method of claim 1, wherein the determining the temperature change rate of the freezing chamber according to the temperature change of the freezing chamber within a preset time period comprises:
and acquiring the starting temperature and the end temperature of the freezing chamber in a preset time period, and calculating the temperature change rate of the freezing chamber.
6. The method of claim 5, wherein the temperature of the freezing chamber is detected by a freezing temperature sensor.
7. The method of claim 1, wherein the opening and closing of an electric damper between the freezing chamber and the refrigerating chamber is controlled to open and close the cool air flow path.
8. A control apparatus of a refrigerator, characterized in that the apparatus comprises:
the determining module is used for determining the temperature change rate of the freezing chamber;
and the control module is used for cutting off a cold air flow path between the freezing chamber and the refrigerating chamber when the temperature change rate of the freezing chamber is smaller than a preset threshold value.
9. A refrigerator, characterized by comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any of claims 1-8.
10. The refrigerator of claim 9, wherein the refrigerator is a single system air-cooled refrigerator comprising a freezing compartment, a non-freezing compartment, a freezing temperature sensor disposed in the freezing compartment, and a refrigerating temperature sensor disposed in the refrigerating compartment;
the freezing temperature sensor is used for detecting the starting point temperature and the end point temperature of the freezing chamber in a preset time period; the refrigerating temperature sensor is used for detecting the temperature of the refrigerating chamber.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117804812A (en) * | 2024-03-01 | 2024-04-02 | 江苏星星冷链科技有限公司 | Freezing performance detection method for ultralow temperature refrigerator and ultralow temperature refrigerator |
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| CN112797727A (en) * | 2021-01-05 | 2021-05-14 | 珠海格力电器股份有限公司 | Control method and device for low-temperature quick freezing of refrigerator, controller and refrigerator |
| CN113915876A (en) * | 2021-03-29 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
| CN113915901A (en) * | 2021-06-10 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator and constant-temperature refrigeration method thereof |
| CN113654298A (en) * | 2021-08-23 | 2021-11-16 | 珠海格力电器股份有限公司 | Refrigeration equipment control method, storage medium, electronic equipment and refrigeration equipment |
| CN113758136A (en) * | 2021-09-10 | 2021-12-07 | Tcl家用电器（合肥）有限公司 | Refrigerator and control method thereof |
| CN114674105A (en) * | 2022-03-09 | 2022-06-28 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
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| CN117804812A (en) * | 2024-03-01 | 2024-04-02 | 江苏星星冷链科技有限公司 | Freezing performance detection method for ultralow temperature refrigerator and ultralow temperature refrigerator |
| CN117804812B (en) * | 2024-03-01 | 2024-05-07 | 江苏星星冷链科技有限公司 | Freezing performance detection method for ultralow temperature refrigerator and ultralow temperature refrigerator |
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