CN114087825B - Energy-saving control method for refrigerator - Google Patents
Energy-saving control method for refrigerator Download PDFInfo
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- CN114087825B CN114087825B CN202111402445.9A CN202111402445A CN114087825B CN 114087825 B CN114087825 B CN 114087825B CN 202111402445 A CN202111402445 A CN 202111402445A CN 114087825 B CN114087825 B CN 114087825B
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- temperature
- expansion valve
- gear
- opening
- compartment
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Classifications
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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
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses an energy-saving control method of a refrigerator, which is applied to the field of energy-saving control and aims at the problem that the prior art cannot effectively control the energy saving of the refrigerator; the invention can effectively reduce the energy consumption of the refrigerator under the condition of not influencing the refrigerating use effect of the refrigerator by acquiring the local power consumption in real time and controlling the rotation speeds of the compressor and the fan of the refrigerator in the power consumption peak period; therefore, when the power consumption is high, the control of household power consumption is realized, and the occurrence of household circuit faults is avoided.
Description
Technical Field
The invention belongs to the field of energy-saving control, and particularly relates to a refrigerator energy-saving control technology.
Background
With the improvement of market consumption level and life quality requirements of people, people put higher requirements on a refrigerator, which is a main electric appliance for storing food in families. At present, the requirements of consumers on household refrigerators tend to be low in noise, high in energy efficiency, high in quality and high in volume, and the refrigerators on the market are mainly divided into a direct-cooling refrigerator and an air-cooling refrigerator, wherein the direct-cooling refrigerator is cooled in a natural convection mode of cold air to achieve the purpose of low-temperature storage of foods, the air-cooling refrigerator is forced to realize rapid cooling by using a fan and an air door, and the uniformity of a temperature field and the refrigerating effect of an air-cooling refrigerator compartment are better due to the forced convection. Air-cooled refrigerators are thus more favored by consumers than direct-cooled refrigerators.
The common air-cooled refrigerator drives a refrigerant in a refrigerator refrigerating system to circulate through a variable frequency or fixed frequency compressor, the flow of the refrigerant is controlled through a throttle valve, so that low-temperature air is manufactured, the low-temperature air is forcedly blown to a freezing chamber and a refrigerating chamber through a control fan to realize forced convection refrigeration, the fan is driven to operate at a certain rotating speed through a motor or a motor, and the air quantity actually entering a compartment is controlled through an electric air door.
Under the 'double carbon' background, the energy power of China needs to realize transformation development, so that the efficiency is improved at the supply side, and flexible resources at the user side are mined. The refrigerator is used as a household appliance which runs continuously for 24 hours, and the flexible power consumption adjustment of a user side can be realized by reasonably optimizing the energy consumption of the refrigerator.
Prior art 1: CN105509411A is used for cooperatively controlling the opening of an electronic expansion valve and the rotating speed of a fan mainly by collecting the ambient temperature and the superheat degree of an evaporator, so as to achieve the aim of matching the refrigerating capacity, the air quantity and the heat load; but does not achieve energy consumption optimization from a major factor.
Prior art 2: CN110186248A, controlling the operation of the refrigerator based on the schedule information of the user, suppressing the excessive energy consumption in the refrigerator, storing the schedule information of the user's home through the server, accessing the schedule program through the terminal device, and transmitting the schedule information to the schedule program; however, a good household electricity distribution strategy cannot be realized in the electricity consumption peak period, for example, in the patent, a strong cooling mode is entered in the electricity consumption peak period, so that energy consumption is increased, however, in practice, the power grid load in the period is large, and the user refrigerator is easy to cause short power failure due to overlarge power grid load by adopting the mode, so that the using effect is influenced, and the household circuit is broken.
Disclosure of Invention
In order to solve the technical problems, the invention provides an energy-saving control method of a refrigerator, which is used for controlling the low power consumption of intelligent household appliances in the corresponding power utilization peak section by acquiring the time period of the local power consumption, so that the household energy consumption can be effectively reduced.
The invention adopts the technical scheme that: an energy saving control method for a refrigerator, comprising:
s1, setting a power consumption peak time period by a user;
s2, judging whether the current time t is in a set electricity utilization peak time period or not; if yes, executing the step S3 to switch the working modes; otherwise, keeping the current working mode to run;
s3, the refrigerator enters a low-power-consumption mode to operate.
The control system on which the method is based comprises: the device comprises a main controller, a room temperature sensor, a touch display screen, an air door, an expansion valve, a fan and a compressor; and the room temperature sensor, the touch display screen, the air door, the expansion valve, the fan and the compressor are respectively connected with the main controller.
The refrigerator enters a low power consumption mode to operate, and the method comprises the following steps of:
a1, acquiring temperature data of each compartment of the refrigerator through a compartment temperature sensor;
a2, comparing the temperature data of each compartment with the temperature set in the current working mode, and executing the step A3 if the temperature data of each compartment meets the temperature requirement of the current working mode; otherwise, executing the step A4;
a3, reducing the rotation speeds of the compressor and the fan, and increasing the opening gear of the expansion valve and the air door;
and A4, increasing the opening gear of the expansion valve and the air door until the temperature of the current intermediate room meets the temperature requirement of the current working mode, and then reducing the rotating speed gear of the compressor and the fan.
Step A2, according to the compartment set temperature corresponding to the current working mode and the allowable temperature error, obtaining a compartment temperature range corresponding to the current working mode, judging whether the temperature data of the compartment collected at present is in the compartment temperature range corresponding to the current working mode, and if so, executing step A3; otherwise, executing the step A4.
The opening gear setting process of the expansion valve and the air door in the step A3 and the step A4 is as follows:
uniformly dividing the opening of the expansion valve and the air door from 0% full closing to 100% full opening to obtain a plurality of gears;
recording the ambient temperature as a, the compartment temperature detected by the temperature sensor as b, and the temperature set in the current working mode as c; the ratio M is calculated as follows:
M＝(b-c)/(a-c)
if M is a positive number, the detected temperature of the current compartment is higher than the set temperature, and the opening gear of the expansion valve and the air door is adjusted upwards; and if M is a negative number, the detected temperature of the current compartment is lower than the set temperature, and the opening gear of the expansion valve and the air door is adjusted downwards.
The upward adjustment is specifically as follows: and finding a gear close to M, and adjusting the opening degrees of the expansion valve and the air door upwards to a larger gear close to M.
And if the current opening degrees of the expansion valve and the air door are in a larger gear close to M, the opening degrees of the expansion valve and the air door are adjusted by one gear again.
The downward adjustment is specifically as follows: and finding a gear close to the absolute value of M, and adjusting the opening degrees of the expansion valve and the air door upwards to a smaller gear close to the absolute value of M.
And if the current opening degree of the expansion valve and the air door is in a smaller gear close to the absolute value M, the opening degree of the expansion valve and the air door is reduced by one gear.
The invention has the beneficial effects that: in the invention, under the current 'double carbon' background, when the power supply is limited, the control strategy of the electric appliance-refrigerator with the maximum household electricity consumption is reasonably adjusted; the refrigerator control strategy controlled by time sharing can enable the household refrigerator to save more energy in the power consumption peak time period, ensure the household power consumption safety and avoid the fault of high-power electric equipment in the household during the power consumption peak; compared with the operation strategy without change all the day, the time-sharing control operation strategy can reduce the energy consumption on the basis of not influencing the final refrigeration effect.
Drawings
FIG. 1 is a control system on which the method of the present invention is based;
FIG. 2 is a flow chart of an embodiment of the present invention;
fig. 3 is a control flow chart of the low power consumption mode.
Detailed Description
The present invention will be further explained below with reference to the drawings in order to facilitate understanding of technical contents of the present invention to those skilled in the art.
As shown in fig. 1, the control system on which the control method of the present invention is based includes: the device comprises a main controller, a room temperature sensor, a touch display screen, an air door, an expansion valve, a fan and a compressor; and the room temperature sensor, the touch display screen, the air door, the expansion valve, the fan and the compressor are respectively connected with the main controller.
As shown in fig. 2, the energy-saving control method of the refrigerator of the present invention comprises the following steps:
s1, a user can input a low power consumption control time and a setting mode which are required to be set through a touch display, such as a strong gear, a middle gear, a low gear and quick freezing; a fixed time period is used as a power utilization peak period by default, for example, 11:00-12:00, 17:00-19:00 in a peak period of 1, 12 months and 11:00-12:00, 14:00-16:00 in a peak period of 7, 8 months; of course, in practical application, the time period of low power consumption control can be set in a self-defined manner according to the requirement.
S2, reading the electricity consumption peak time period (T1-T2) and continuously reading the current time T from the main controller;
s3, judging whether the current time T is within a power utilization peak time period (T1-T2);
s4, if the current time t is in the electricity consumption peak time period, entering a low-power consumption mode for operation; if the current time t is not in the high electricity price time period, the operation is carried out according to a normal working mode;
as shown in fig. 3, in the low power consumption mode, first, the temperature sensor of each compartment collects temperature data a1, a2, a3 and … … of the corresponding compartment, and compares the collected temperature of each compartment with a temperature threshold value to be reached stored in the main controller; for example, the current temperature of the variable temperature chamber is detected to be 2.5 ℃, the current gear is a strong gear, the required room temperature is 2 ℃, the temperature allowable error is 1 ℃, namely, the temperature of the current variable temperature meets the requirements of the gear or the mode within 1-3 ℃, the rotating speed gear of the compressor and the fan can be reduced, and the opening gear of the expansion valve and the air door can be increased; otherwise, the rotational speed gear of the compressor and the fan is not changed, the opening gear of the expansion valve and the air door is increased until the temperature of the current intermediate room meets the temperature requirement of the current gear, and then the rotational speed gear of the compressor and the fan is reduced;
in the control process of the refrigerator, the gear of the fan is in three gears of high, medium and low; the gear of the compressor is three gears of high, medium and low; the opening of the air door and the expansion valve are respectively in first gear at intervals of 25 percent, and the air door and the expansion valve are fully closed from 0 percent to 100 percent and are fully opened to form five gears altogether;
in the actual control process, as the condition that the refrigerating chamber meets the temperature requirement and the freezing chamber does not meet the temperature requirement possibly exists in each chamber, only the opening of the air door of the refrigerating chamber is required to be reduced, the rotational speed gear of the compressor and the fan is not changed, the opening of the air door of the freezing chamber and the expansion valve is improved, the refrigerating air quantity is intensively blown to the freezing chamber, and after the detected temperature meets the temperature requirement, the rotational speed gear of the compressor and the fan is reduced, and the opening of the air door of the refrigerating chamber is increased;
the gear is regulated in the control process by dividing the difference value between the ambient temperature and the set temperature according to the difference value between the current temperature and the set temperature, and searching for the nearest gear; for example, the ambient temperature is 15 ℃, the detection temperature is 5 ℃, the set temperature is 3 ℃, and the temperature allowable error is 1 ℃; (5-3)/(15-3) =1/6≡16.7%, which means that the current temperature is already relatively close to the set temperature, the opening can be increased by one step, namely, the opening is increased by 25%; when the detected temperature is 11 ℃, the comparison of the current temperature and the deviation of the current temperature is indicated to be 66.7 percent by (11-3)/(15-3) =2/3, and the opening degree is increased to 75 percent, and if the current opening degree is 75 percent, the opening degree is increased to 100 percent. If the current opening is already 100% of the maximum gear, the current opening gear is maintained.
When the detected temperature is lower than the set temperature, the calculated percentage value is obviously negative, so the opening of the air door and the expansion valve are required to be downwards adjusted in the same way, and the specific adjusting mode is as follows: finding a gear interval close to the absolute value of the percentage value, and adjusting the opening of the expansion valve and the throttle upwards to a smaller gear close to M; and if the current opening degree of the expansion valve and the air door is in a smaller gear close to M, the opening degree of the expansion valve and the air door is reduced by one gear. If the current opening is 25% of the lowest gear, the current opening gear is maintained.
Those of ordinary skill in the art will recognize that the embodiments described herein are for the purpose of aiding the reader in understanding the principles of the present invention and should be understood that the scope of the invention is not limited to such specific statements and embodiments. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. An energy-saving control method for a refrigerator, comprising:
s1, setting a power consumption peak time period by a user;
s2, judging whether the current time t is in a set electricity utilization peak time period or not; if yes, executing the step S3 to switch the working modes; otherwise, keeping the current working mode to run;
the control system on which the method is based comprises: the device comprises a main controller, a room temperature sensor, a touch display screen, an air door, an expansion valve, a fan and a compressor; the room temperature sensor, the touch display screen, the air door, the expansion valve, the fan and the compressor are respectively connected with the main controller;
s3, the refrigerator enters a low-power-consumption mode to operate; the refrigerator enters a low power consumption mode to operate, and the method comprises the following steps of:
a1, acquiring temperature data of each compartment of the refrigerator through a compartment temperature sensor;
a2, comparing the temperature data of each compartment with the temperature set in the current working mode, and executing the step A3 if the temperature data of each compartment meets the temperature requirement of the current working mode; otherwise, executing the step A4;
a3, reducing the rotation speeds of the compressor and the fan, and increasing the opening gear of the expansion valve and the air door;
and A4, increasing the opening gear of the expansion valve and the air door until the temperature of the current intermediate room meets the temperature requirement of the current working mode, and then reducing the rotating speed gear of the compressor and the fan.
2. The energy-saving control method of a refrigerator according to claim 1, wherein step A2 obtains a compartment temperature range corresponding to a current operation mode according to a compartment set temperature corresponding to the current operation mode and an allowable temperature error, and judges whether the temperature data of the compartment collected at present is within the compartment temperature range corresponding to the current operation mode, if so, step A3 is executed; otherwise, executing the step A4.
3. The energy saving control method of a refrigerator according to claim 2, wherein the opening gear setting process of the expansion valve and the damper in the step A3 and the step A4 is as follows:
uniformly dividing the opening of the expansion valve and the air door from 0% full closing to 100% full opening to obtain a plurality of gears;
recording the ambient temperature as a, the compartment temperature detected by the temperature sensor as b, and the temperature set in the current working mode as c; the ratio M is calculated as follows:
M＝(b-c)/(a-c)
if M is a positive number, the detected temperature of the current compartment is higher than the set temperature, and the opening gear of the expansion valve and the air door is adjusted upwards; and if M is a negative number, the detected temperature of the current compartment is lower than the set temperature, and the opening gear of the expansion valve and the air door is adjusted downwards.
4. A method for controlling energy saving of a refrigerator according to claim 3, wherein the upward adjustment is specifically: and finding a gear close to M, and adjusting the opening degrees of the expansion valve and the air door upwards to a larger gear close to M.
5. The method of claim 4, wherein the opening of the expansion valve and the damper is increased by one more gear if the opening of the expansion valve and the damper is already at a larger gear close to M.
6. The energy saving control method of a refrigerator according to claim 4, wherein the downward adjustment is specifically: and finding a gear close to the absolute value of M, and adjusting the opening degrees of the expansion valve and the air door upwards to a smaller gear close to the absolute value of M.
7. The method of claim 5, wherein the opening degree of the expansion valve and the damper is reduced by one more gear if the opening degree of the expansion valve and the damper is already at a small gear close to the absolute value of M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402445.9A CN114087825B (en) | 2021-11-24 | 2021-11-24 | Energy-saving control method for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111402445.9A CN114087825B (en) | 2021-11-24 | 2021-11-24 | Energy-saving control method for refrigerator |
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| Publication Number | Publication Date |
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| CN114087825A CN114087825A (en) | 2022-02-25 |
| CN114087825B true CN114087825B (en) | 2023-08-01 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115342589A (en) * | 2022-05-30 | 2022-11-15 | 合肥美菱物联科技有限公司 | Intelligent power-saving freezer control method |
| CN115200274B (en) * | 2022-07-21 | 2023-07-18 | 西安交通大学 | Refrigerator refrigerating capacity adjusting method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088421A (en) * | 1998-09-18 | 2000-03-31 | Hitachi Ltd | Refrigerator |
| CN102052818A (en) * | 2009-10-30 | 2011-05-11 | 泰州乐金电子冷机有限公司 | Method and device for setting frequency-variable refrigerator |
| KR101637354B1 (en) * | 2010-01-20 | 2016-07-07 | 엘지전자 주식회사 | A refrigerator and a control method thereof |
| US8869546B2 (en) * | 2010-11-03 | 2014-10-28 | General Electric Company | Refrigeration demand response recovery |
| CN104236189A (en) * | 2013-06-18 | 2014-12-24 | 苏州三星电子有限公司 | Time-division running refrigerator and control method |
| CN105698483B (en) * | 2016-04-08 | 2017-12-26 | 海信容声(广东)冰箱有限公司 | A kind of controlling method for refrigerator and refrigerator controller |
| CN107490238B (en) * | 2017-07-10 | 2019-11-22 | 广东格兰仕集团有限公司 | The method that intelligent refrigerator judges daytime and night according to user's use habit |
| CN112082322B (en) * | 2020-09-17 | 2022-07-05 | 长虹美菱股份有限公司 | Refrigerator operation method for optimizing refrigeration by time interval based on busy or idle attribute |
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