CN110953792A - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN110953792A CN110953792A CN201811132998.5A CN201811132998A CN110953792A CN 110953792 A CN110953792 A CN 110953792A CN 201811132998 A CN201811132998 A CN 201811132998A CN 110953792 A CN110953792 A CN 110953792A
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D2600/06—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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- 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
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
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- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a control method of a variable frequency refrigerator, which comprises the following steps: acquiring the ambient temperature and the ambient humidity of the area where the variable frequency refrigerator is located; acquiring the temperature of a compartment inside the variable frequency refrigerator, and calculating the temperature difference between the compartment temperature and the compartment set temperature; determining the rotating speed of the compressor corresponding to the environment temperature, the environment humidity and the temperature difference according to a preset mapping relation, wherein the mapping relation specifies a rotating speed value corresponding to an environment temperature numerical range, an environment humidity numerical range and a temperature difference numerical range; and controlling the compressor of the inverter refrigerator to operate according to the determined rotating speed of the compressor. The invention also provides a refrigerator.
Description
Technical Field
The invention relates to the technical field of cold storage and freezing devices, in particular to a refrigerator and a control method thereof.
Background
The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. A refrigeration system of a conventional refrigerator is a compression refrigeration system in which a compressor is driven by a motor to rotate endlessly to compress a refrigerant as a power of a refrigeration cycle. The inverter compressor is a compressor which can change output energy by adjusting the rotating speed of the compressor within a certain range through a control mode or means relative to a compressor with constant rotating speed. Some refrigerators have a dry space in the cold storage compartment, which is prone to getting damp due to the difficulty in absolute sealing. In the prior art, cold air with low temperature and low humidity is sent into a dry area space by a compression refrigeration system, and a compressor is controlled to continuously operate to continuously keep the dry area space in a micro-positive pressure state so as to prevent wet air in a refrigerating chamber from entering the dry area space. In the initial process of steady-state refrigeration, the compressor has overhigh rotating speed, so that the condensation temperature is high, the refrigeration efficiency is low, meanwhile, the parts of the compressor are easy to damage due to overhigh rotating speed, and in addition, the energy consumption of the refrigerator is high due to large cold quantity.
Disclosure of Invention
The invention aims to provide a control method of an inverter refrigerator, which can adjust the rotating speed of a compressor timely, quickly and accurately.
It is a further object of the present invention to provide a refrigerator.
In one aspect, the present invention provides the following technical solutions:
a control method of a variable frequency refrigerator comprises the following steps:
acquiring the ambient temperature and the ambient humidity of the area where the variable frequency refrigerator is located;
acquiring the temperature of a compartment inside the variable frequency refrigerator, and calculating the temperature difference between the compartment temperature and the compartment set temperature;
determining the rotating speed of the compressor corresponding to the environment temperature, the environment humidity and the temperature difference according to a preset mapping relation; the mapping relation specifies the rotating speed values corresponding to an environmental temperature numerical range, an environmental humidity numerical range and a temperature difference numerical range;
and controlling the compressor of the inverter refrigerator to operate according to the determined rotating speed of the compressor.
Optionally, the step of determining the compressor rotation speed according to the mapping relationship comprises:
determining the environmental temperature numerical range to which the environmental temperature belongs;
inquiring according to the determined environmental temperature numerical range to obtain a corresponding temperature difference-humidity-rotating speed mapping relation; the temperature difference-humidity-rotating speed mapping relation specifies an environmental humidity numerical range and a rotating speed value corresponding to the temperature difference numerical range, and the temperature difference-humidity-rotating speed mapping relations corresponding to different environmental temperature numerical ranges are different.
Optionally, the interval length of the environmental temperature numerical range is obtained by equally dividing according to the limit working temperature of the variable frequency refrigerator.
Optionally, after calculating the temperature difference, the method further includes:
comparing the temperature difference with a preset temperature difference threshold value; and under the condition that the temperature difference is greater than the temperature difference threshold value, the compressor is enabled to run and execute the step of determining the rotating speed of the compressor, and if the temperature difference is less than or equal to the temperature difference threshold value, the compressor is enabled to stop.
Optionally, after obtaining the room temperature inside the inverter refrigerator, the method further includes:
judging whether the inverter refrigerator meets a steady-state operation condition, and if so, executing the step of determining the rotating speed of the compressor;
and the steady-state operation condition is that in a preset time, if the change value of the compartment temperature is smaller than a preset change threshold value, the variable frequency refrigerator is considered to meet the steady-state operation condition.
Optionally, the variable frequency refrigerator comprises a refrigerating chamber, and a dry region space is formed in an inner region of the refrigerating chamber;
and the step of obtaining the temperature of the compartment inside the variable frequency refrigerator is to obtain the temperature of a compartment dry area of the dry area space, calculate the temperature difference between the temperature of the compartment dry area and the set temperature of the compartment dry area, and then execute the step of determining the rotating speed of the compressor.
Optionally, the obtaining of the ambient temperature and the ambient humidity of the area where the inverter refrigerator is located includes: and acquiring numerical values measured by a plurality of environment detection devices arranged at different positions on the shell of the variable frequency refrigerator, and performing fusion calculation on the numerical values to obtain the environment temperature and the environment humidity of the area where the variable frequency refrigerator is located.
Optionally, after the numerical values measured by the plurality of environment detection devices at different positions are obtained, the environment detection device with the excessively large numerical value deviation is identified and reminded.
On the other hand, the invention provides the following technical scheme:
a refrigerator, comprising:
the refrigerator comprises a refrigerator body, a storage compartment and a door, wherein one or more storage compartments are formed in the refrigerator body;
the compression refrigeration system is used for providing cold energy to the storage room and comprises a variable frequency compressor;
the environment detection device is used for detecting the environment temperature and the environment humidity of the area where the refrigerator is located;
the compartment temperature measuring device is arranged inside one or more storage compartments and used for detecting the compartment temperature; and
a controller having a memory and a processor, the memory having stored therein a control program for implementing the aforementioned control method when the control program is executed by the processor.
Optionally, the environment detection devices are respectively arranged at different positions on the casing of the box body;
the controller is configured to implement the aforementioned control method when the control program is executed by the processor.
The control method of the variable frequency refrigerator fully considers various factors influencing the rotating speed of the compressor, and the rotating speed of the compressor is corresponded according to the measured environmental temperature, environmental humidity and calculated temperature difference by specifying the rotating speed value corresponding to the environmental temperature numerical range, the environmental humidity numerical range and the temperature difference numerical range in the preset mapping relation, so that the rotating speed of the compressor of the variable frequency refrigerator can be adjusted timely, quickly and accurately.
Furthermore, the control method of the inverter refrigerator is started when the inverter refrigerator is in a steady-state operation condition, so that the efficiency of the compressor can be improved, and the energy consumption is saved; the evaporator temperature can be properly increased, the condensing temperature can be reduced, the refrigeration efficiency is improved, the working temperature of the compressor can be prevented from being overhigh, and the service life of the compressor is prolonged.
Furthermore, the control method of the variable frequency refrigerator measures the compartment dry zone temperature of the dry zone space, and adjusts the rotating speed of the compressor of the variable frequency refrigerator in time, quickly and accurately by using the preset mapping relation, so that the dry zone space can be kept in a micro-positive pressure state continuously, and the dry zone space is effectively prevented from getting damp.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of a refrigerator according to one embodiment of the present invention.
Fig. 2 is a schematic diagram illustrating a flow of control signals of a controller of a refrigerator according to an embodiment of the present invention.
Fig. 3 is a flow chart illustrating a control method of the inverter refrigerator according to an embodiment of the present invention.
Fig. 4 is a flow chart illustrating an application example of a control method of the inverter refrigerator according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic view of a refrigerator 100 according to one embodiment of the present invention. Fig. 2 is a control signal flow diagram of the controller 300 of the refrigerator 100 according to one embodiment of the present invention. The refrigerator 100 according to an embodiment of the present invention may generally include a refrigerator body 110, a door body 111, an environment detection device 201, a compartment temperature measurement device 210, a compression refrigeration system 400, and a controller 300. One or more storage compartments are provided in the case body 110. The storage compartment is used for storing food. The door 111 may be multiple, and each door 111 is configured to controllably open or close one storage compartment. The environment detection device 201 is disposed outside the cabinet 110, and is configured to detect an ambient temperature and an ambient humidity. The compartment temperature measuring device 210 is arranged inside the storage compartment and used for detecting the temperature of the compartment.
The compression refrigeration system 400 is used for providing refrigeration to the storage compartment and comprises a variable frequency compressor 401, a condenser 402, a throttling device 403 and an evaporator 404. The inverter compressor 401 is driven by a motor to rotate continuously as power of a refrigeration cycle, and compresses low-temperature and low-pressure refrigerant vapor to a high-temperature and high-pressure state. The condenser 402 is a heat exchange device, and takes heat from the high-temperature and high-pressure refrigerant vapor from the compressor 401 by using an ambient cooling refrigerant, so that the high-temperature and high-pressure refrigerant vapor is cooled and condensed into a high-pressure and normal-temperature refrigerant liquid. The refrigerant liquid at high pressure and normal temperature passes through the throttling device 403 to obtain low-temperature and low-pressure refrigerant, and then is sent into the evaporator 404 for heat absorption and evaporation. The evaporator 404 serves as another heat exchange device, and the throttled low-temperature and low-pressure refrigerant liquid is evaporated into vapor in the evaporator, so that ambient heat is absorbed, the ambient temperature is reduced, and the purpose of refrigeration is achieved.
Within the preset time, if the temperature variation value of the compartment of the storage compartment is smaller than the preset variation threshold value, the refrigerator 100 is determined to meet the steady-state operation condition. During steady state operation of the refrigerator 100, heat dissipation of the refrigerator 100 to the outside is mainly related to the ambient temperature and the ambient humidity. The greater the ambient temperature is, the greater the heat transfer temperature difference between the box body 110 and the environment is, the greater the heat transfer quantity is, the greater the cooling capacity provided by the variable frequency compressor 401 to the storage compartment is, and then the rotating speed of the variable frequency compressor 401 is to be increased; the greater the ambient humidity is, the greater the heat conductivity coefficient of the ambient humid air is, the greater the heat transfer amount between the environment and the refrigerator 100 will be, the greater the cooling capacity supplied to the storage compartment by the inverter compressor 401 will be, and the higher the rotation speed of the inverter compressor 401 will be. During steady state operation of the refrigerator 100, the temperature difference between the compartment temperature of the storage compartment and the compartment set temperature is generally small. If the rotating speed of the inverter compressor 401 is controlled according to the set temperature of the compartment, the rotating speed of the inverter compressor 401 is too high, and a large energy loss is caused. Therefore, if the rotating speed of the inverter compressor 401 is intelligently controlled by establishing a mapping relation according to the ambient temperature, the ambient humidity and the temperature difference between the compartment temperature and the compartment set temperature, the efficiency of the inverter compressor 401 can be improved, and the energy consumption is saved. The evaporation temperature can be properly increased, the condensation temperature can be reduced, the refrigeration efficiency is improved, meanwhile, the working temperature of the variable frequency compressor 401 can be prevented from being too high, and the service life of the variable frequency compressor 401 is prolonged.
The environment detection device 201 may employ a temperature and humidity sensor or a combination of a temperature sensor and a humidity sensor.
In a preferred embodiment, the environment detection devices 201 are respectively disposed at different positions outside the case 110. The ambient temperature and the ambient humidity are obtained by acquiring the values measured by the plurality of environment detection devices 201 arranged at different positions on the housing and then performing fusion calculation on the plurality of values. The fused calculation yields more accurate values than a single measurement. The final ambient temperature and humidity are generally determined by adding and averaging the various values. Of course, different weights may be defined according to the setting positions of the environment detection devices 201, for example, the weight setting of the environment detection device 201 near the water source side is higher, and the weight setting of the environment detection device 201 far from the water source side is lower.
The compartment temperature measuring device 210 may employ a temperature sensor. In a preferred embodiment, a compartment temperature measuring device 210 is provided in each storage compartment to obtain a compartment temperature. The compartment temperature measuring devices 210 are respectively arranged in each storage compartment, so that each storage compartment can be accurately regulated and controlled. For example, the storage compartments include a refrigerating compartment 120, a temperature changing compartment 130, and a freezing compartment 140.
A first temperature sensor 211 is provided in the refrigerating compartment 120 to detect the temperature of the refrigerating compartment 120 and obtain a refrigerating temperature. The temperature difference between the refrigeration temperature and the refrigeration set temperature is the refrigeration temperature difference. The preset mapping relation defines the rotating speed values corresponding to the environmental temperature numerical range, the environmental humidity numerical range and the refrigeration temperature difference numerical range.
A second temperature sensor 212 is disposed in the variable temperature chamber 130, and is configured to detect a temperature of the variable temperature chamber 130 to obtain a variable temperature. The temperature difference between the variable temperature and the variable temperature setting temperature is the variable temperature difference. The preset mapping relation defines the rotating speed values corresponding to the environmental temperature numerical range, the environmental humidity numerical range and the variable temperature difference numerical range.
A third temperature sensor 213 is provided in the freezing compartment 140 to detect the temperature of the freezing compartment 140 and obtain the freezing temperature. The temperature difference between the freezing temperature and the freezing set temperature is the freezing temperature difference. The preset mapping relation defines the rotating speed values corresponding to the environmental temperature numerical range, the environmental humidity numerical range and the freezing temperature difference numerical range.
In one embodiment, the refrigerated compartment 120 is formed with a dry zone space 112. The dry space 112 is an area in which humidity is maintained at a low level, which is separately partitioned in the refrigerating compartment 120, for storing the tea leaves, the medical materials, etc., and can be preserved for a long time without getting damp. A fourth temperature sensor 214 is disposed in the dry zone space 112 for detecting the temperature of the dry zone space 112 to obtain the refrigerated dry zone temperature. The temperature difference between the temperature of the refrigerating dry area and the set temperature of the refrigerating dry area is the temperature difference of the refrigerating dry area. The preset mapping relation defines the rotating speed values corresponding to the environmental temperature numerical range, the environmental humidity numerical range and the refrigerating dry area temperature difference numerical range. The rotation speed of the inverter compressor 401 can be adjusted timely, quickly and accurately by using the preset mapping relation, so that the dry area space 112 is kept in a micro-positive pressure state continuously, and the dry area space 112 is effectively prevented from getting damp.
The predetermined mapping relationship will be described by taking the stem space 112 as an example. As shown in table 1, is a mapping of the stem space 112, shown in tabular form.
TABLE 1 trunk space mapping relationship
In the table, T represents an ambient temperature value range, d represents an ambient humidity value range, △ T represents a refrigeration dry zone temperature difference value range, and N represents a rotating speed value of the inverter compressor 401.
In the table, the environmental temperature value range, the environmental humidity value range, the temperature difference value range of the refrigerated dry area and the rotating speed value can be set as required according to the temperature control accuracy, the refrigeration and defrosting time and the like.
The interval length setting of the ambient temperature range may be equally divided according to the limit operating temperature of the refrigerator 100. The limit working temperature is assumed to be-20-50 ℃, the temperature is divided into 100 equal parts, and n is 100.
The rotation speed control process of the inverter compressor 401 of the refrigerator 100 according to the embodiment of the present invention will be described with an application specific example. Assume a refrigerated dry zone set temperature of 4 ℃. Table 1 preset: ambient temperature value range T1Is in the range of 24-25 ℃ and the ambient humidity value d238-40% RH, temperature difference value range △ T2At 0.5-1 deg.C, rotating speed value N121Is 800 revolutions. The obtained ambient temperature is 24.8 ℃, the ambient humidity is 38% RH, the temperature of the dry refrigerating area is 5 ℃, the temperature difference of the dry refrigerating area is 1 ℃ through calculation, and the rotating speed of the variable frequency compressor 401 is 760 revolutions at the moment. Firstly, the environmental temperature value range of 24.8 ℃ is determined as T1(ii) a According to the determined environmental temperature numerical range T1Inquiring to obtain a corresponding temperature difference-humidity-rotating speed mapping relation, and according to an environment humidity numerical value range d corresponding to the environment humidity 38% RH2And the temperature difference value range △ T corresponding to the temperature difference of 1 ℃ in the cold storage dry area2Corresponding to the rotating speed value N121Is 800 revolutions. Thus, the rotation speed of the inverter compressor 401 can be controlled to increase to 800 revolutions.
In the embodiment of the present invention, only the dry space 112 is taken as an example to describe the control part of the rotational speed of the compressor 401 of the refrigerator 100 of the present invention, and it should be understood that, for other storage compartments, a mapping relationship similar to the dry space 112 part may also be adopted to represent the rotational speed value of the compressor 401, and thus, the rotational speed of the compressor 401 is controlled.
The controller 300 has a memory 301 and a processor 302, and a control program 303 is stored in the memory 301, and when the control program 303 is executed by the processor 302, the control method of the present embodiment is implemented. Fig. 3 is a flowchart illustrating a control method of the inverter refrigerator 100 according to an embodiment of the present invention. The control method of the variable frequency refrigerator 100 comprises the following steps:
s302: acquiring the ambient temperature and the ambient humidity of an area where the variable frequency refrigerator is located;
s304: acquiring the temperature of a compartment inside the variable frequency refrigerator, and calculating the temperature difference between the compartment temperature and the compartment set temperature;
s306: determining the rotating speed of the compressor corresponding to the environmental temperature, the environmental humidity and the temperature difference according to a preset mapping relation; wherein the mapping relation specifies the rotating speed values corresponding to an environmental temperature numerical range, an environmental humidity numerical range and a temperature difference numerical range;
s308: and controlling the compressor of the inverter refrigerator to operate according to the determined rotating speed of the compressor.
In one embodiment, the step of determining the rotation speed of the compressor according to the mapping relationship in S306 includes: determining an environment temperature numerical range to which the environment temperature belongs; and inquiring according to the determined environmental temperature numerical range to obtain a corresponding temperature difference-humidity-rotating speed mapping relation. The temperature difference-humidity-rotating speed mapping relation specifies an environmental humidity numerical range and a rotating speed value corresponding to the temperature difference numerical range, and the temperature difference-humidity-rotating speed mapping relations corresponding to different environmental temperature numerical ranges are different. The interval length setting of the environmental temperature numerical range is obtained by equally dividing according to the limit working temperature of the variable frequency refrigerator 100.
After the temperature difference is calculated in S304, the temperature difference is compared with a preset temperature difference threshold. In the case where the temperature difference is greater than the temperature difference threshold, the compressor 401 is operated and the step of determining the rotational speed of the compressor is performed. If the temperature difference is less than or equal to the temperature difference threshold, the compressor 401 is shut down. The temperature difference threshold value can be set according to the requirements of temperature control accuracy, refrigeration and defrosting time and the like.
After the compartment temperature is acquired in S304, it is determined whether the inverter refrigerator 100 satisfies the steady-state operation condition, and if so, the step of determining the rotational speed of the compressor is performed. The steady-state operation condition is that within a preset time, if the change value of the compartment temperature is smaller than a preset change threshold value, the inverter refrigerator 100 is considered to meet the steady-state operation condition. At the initial stage of steady state operation of the existing refrigerator, the rotating speed of a compressor is hardly adjusted, and the problems of overlarge rotating speed and high energy consumption are easy to occur. After the step of determining the rotating speed of the compressor is executed, the rotating speed of the compressor can be rapidly adjusted according to the change of conditions.
Generally, a dry region space 112 is partitioned in the refrigerating compartment 120, the compressor 401 needs to be continuously operated in order to continuously maintain the dry region space 112 in a micro-positive pressure state, and in order to reduce energy consumption and prolong the service life of the compressor 401, real-time adjustment of the rotating speed of the compressor 401 is an optional mode. The method comprises the steps of obtaining the dry compartment temperature of the dry compartment space 112, calculating the temperature difference between the dry compartment temperature and the dry compartment set temperature, determining the range of the environment temperature according to the current environment temperature, selecting the corresponding temperature difference-humidity-rotating speed mapping relation table according to the range of the environment temperature, substituting the environment humidity and the temperature difference, and determining the rotating speed of the compressor.
In order to make the ambient temperature and the ambient humidity more accurate, in the control method S302, values measured by a plurality of environment detection devices 201 disposed at different positions on the outer casing of the variable frequency refrigerator 100 are obtained, and the plurality of values are subjected to fusion calculation to obtain the ambient temperature and the ambient humidity of the area where the variable frequency refrigerator 100 is located. In addition, after the values measured by the plurality of environment detection devices are obtained, the environment detection device 201 with the overlarge value deviation can be identified, and a prompt is sent to a user so as to remove the fault in time.
Fig. 4 is a flow chart illustrating an application example of a control method of the inverter refrigerator according to an embodiment of the present invention. The control method of the variable frequency refrigerator 100 comprises the following steps:
s402: acquiring the ambient temperature and the ambient humidity of an area where the variable frequency refrigerator is located;
s404: acquiring the temperature of a compartment inside the variable frequency refrigerator;
s406: calculating the temperature difference between the temperature of the chamber and the set temperature of the chamber;
s408: judging the temperature difference and the preset temperature difference threshold value;
s410: if the temperature difference is less than or equal to the temperature difference threshold value, controlling the compressor to stop;
s412: if the temperature difference is larger than the temperature difference threshold value, determining the numerical range of the environment temperature to which the environment temperature belongs;
s414: inquiring according to the determined environmental temperature numerical range to obtain a corresponding temperature difference-humidity-rotating speed mapping relation;
s416: determining a corresponding rotating speed value according to the environment temperature, the environment humidity and the temperature difference in the temperature difference-humidity-rotating speed mapping relation;
s418: and controlling the compressor of the inverter refrigerator to operate according to the determined rotating speed of the compressor.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A control method of a variable frequency refrigerator is characterized by comprising the following steps:
acquiring the ambient temperature and the ambient humidity of the area where the variable frequency refrigerator is located;
acquiring the temperature of a compartment inside the variable frequency refrigerator, and calculating the temperature difference between the compartment temperature and the compartment set temperature;
determining the rotating speed of the compressor corresponding to the environment temperature, the environment humidity and the temperature difference according to a preset mapping relation, wherein the mapping relation specifies a rotating speed value corresponding to an environment temperature numerical range, an environment humidity numerical range and a temperature difference numerical range;
and controlling the compressor of the inverter refrigerator to operate according to the determined rotating speed of the compressor.
2. The control method of the inverter refrigerator according to claim 1,
the step of determining the rotational speed of the compressor according to the mapping relationship includes:
determining the environmental temperature numerical range to which the environmental temperature belongs;
inquiring according to the determined environmental temperature numerical range to obtain a corresponding temperature difference-humidity-rotating speed mapping relation; the temperature difference-humidity-rotating speed mapping relation specifies an environmental humidity numerical range and a rotating speed value corresponding to the temperature difference numerical range, and the temperature difference-humidity-rotating speed mapping relations corresponding to different environmental temperature numerical ranges are different.
3. The control method of the inverter refrigerator according to claim 2,
and the interval length of the environmental temperature numerical range is set to be obtained by equally dividing according to the limit working temperature of the variable frequency refrigerator.
4. The control method of the inverter refrigerator according to claim 1,
after the temperature difference is calculated, the method further comprises the following steps:
comparing the temperature difference with a preset temperature difference threshold value; and under the condition that the temperature difference is greater than the temperature difference threshold value, the compressor is enabled to run and execute the step of determining the rotating speed of the compressor, and if the temperature difference is less than or equal to the temperature difference threshold value, the compressor is enabled to stop.
5. The control method of the inverter refrigerator according to claim 1,
after the room temperature inside the inverter refrigerator is obtained, the method further comprises the following steps:
judging whether the inverter refrigerator meets a steady-state operation condition, and if so, executing the step of determining the rotating speed of the compressor;
and the steady-state operation condition is that in a preset time, if the change value of the compartment temperature is smaller than a preset change threshold value, the variable frequency refrigerator is considered to meet the steady-state operation condition.
6. The control method of the inverter refrigerator according to claim 1,
the variable frequency refrigerator comprises a refrigerating chamber, wherein a dry area space is formed in the refrigerating chamber in an inner area;
and the step of obtaining the temperature of the compartment inside the variable frequency refrigerator is to obtain the temperature of a compartment dry area of the dry area space, calculate the temperature difference between the temperature of the compartment dry area and the set temperature of the compartment dry area, and then execute the step of determining the rotating speed of the compressor.
7. The control method of the inverter refrigerator according to claim 1,
acquiring the ambient temperature and the ambient humidity of the area where the variable frequency refrigerator is located comprises the following steps: and acquiring numerical values measured by a plurality of environment detection devices arranged at different positions on the shell of the variable frequency refrigerator, and performing fusion calculation on the numerical values to obtain the environment temperature and the environment humidity of the area where the variable frequency refrigerator is located.
8. The control method of the inverter refrigerator according to claim 7,
and after the numerical values measured by the plurality of environment detection devices at different parts are obtained, identifying the environment detection device with overlarge numerical value deviation, and reminding.
9. A refrigerator, characterized by comprising:
the refrigerator comprises a refrigerator body, a storage compartment and a door, wherein one or more storage compartments are formed in the refrigerator body;
the compression refrigeration system is used for providing cold energy to the storage room and comprises a variable frequency compressor;
the environment detection device is used for detecting the environment temperature and the environment humidity of the area where the refrigerator is located;
the compartment temperature measuring device is arranged inside one or more storage compartments and used for detecting the compartment temperature; and
a controller having a memory and a processor, the memory having stored therein a control program for implementing the control method according to any one of claims 1-6 when the control program is executed by the processor.
10. The refrigerator according to claim 9,
the environment detection devices are respectively arranged at different positions on the box body shell;
the controller is configured to implement the control method according to claim 7 or 8 when the control program is executed by the processor.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076495A (en) * | 2019-12-25 | 2020-04-28 | 珠海格力电器股份有限公司 | Humidity determination method and device for refrigeration equipment, storage medium, system and refrigerator |
| CN112413973A (en) * | 2020-11-25 | 2021-02-26 | 珠海格力电器股份有限公司 | Control method of refrigerated cabinet and refrigerating system |
| CN113465272A (en) * | 2021-07-16 | 2021-10-01 | 珠海格力电器股份有限公司 | Refrigeration control method of refrigerator, computer device and computer readable storage medium |
| CN113915934A (en) * | 2021-01-29 | 2022-01-11 | 海信（山东）冰箱有限公司 | Refrigerator and control method thereof |
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| CN111076495A (en) * | 2019-12-25 | 2020-04-28 | 珠海格力电器股份有限公司 | Humidity determination method and device for refrigeration equipment, storage medium, system and refrigerator |
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| CN115617095A (en) * | 2022-12-19 | 2023-01-17 | 长沙观谱红外科技有限公司 | Temperature control method |
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