CN115451644A - Method and device for controlling rotating speed of refrigerating fan of refrigerator - Google Patents
Method and device for controlling rotating speed of refrigerating fan of refrigerator Download PDFInfo
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- CN115451644A CN115451644A CN202211053459.9A CN202211053459A CN115451644A CN 115451644 A CN115451644 A CN 115451644A CN 202211053459 A CN202211053459 A CN 202211053459A CN 115451644 A CN115451644 A CN 115451644A
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/067—Evaporator fan units
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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
- F25D2323/00—General constructional features not provided for in other groups of this subclass
- F25D2323/002—Details for cooling refrigerating machinery
- F25D2323/0023—Control of the air flow cooling refrigerating machinery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a method and a device for controlling the rotating speed of a refrigerating fan of a refrigerator, wherein the method comprises the following steps: in the current operation period, detecting whether the temperature of the refrigerator evaporator reaches a target temperature before the operation time of the refrigerator freezing fan reaches a preset time, and obtaining a detection result; determining a control strategy for the rotating speed of the refrigerating fan of the refrigerator according to the detection result; and controlling the rotating speed of the freezing fan of the refrigerator according to the control strategy. The technical problems that in the prior art, the rotating speed control of the freezing fan of the refrigerator is not in accordance with the actual working condition of the refrigerator, the freezing fan runs at a high speed in production time, and the fan running noise is large, and therefore user experience is low are solved.
Description
Technical Field
The invention relates to the technical field of refrigerator control, in particular to a method and a device for controlling the rotating speed of a refrigerating fan of a refrigerator.
Background
The air-cooled refrigerator meets the refrigeration requirement of the refrigerator by matching a compressor and a freezing fan, generally, the running rotating speeds of a plurality of freezing fans are preset in a control system, and then the corresponding fan running rotating speeds are selected according to the change of the running rotating speed of the compressor or the ambient temperature, so that the cooling requirement of the refrigerator under different working conditions is met, but the association is usually a one-to-one corresponding fixed mode, and the load change of the refrigerator in actual running is not considered. If put into a large amount of heat loads at refrigerator operation in-process, the refrigerator incasement load increase is obvious this moment, need for the heat load cooling fast, nevertheless according to present control mode, only can just can reduce heat load temperature through the long-time refrigeration operation of refrigerator, even frequency conversion refrigerator also only reaches the purpose of rapid cooling through promoting the compressor rotational speed then matching high fan rotational speed.
Above-mentioned control mode, the control to fan operation rotational speed is comparatively rigid, and is not nimble enough, and freezing fan is long-time in high rotational speed operation moreover, can bring the vexation of fan running noise for the user.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a method and a device for controlling the rotating speed of a freezing fan of a refrigerator, so as to solve the technical problems that in the prior art, the rotating speed control of the freezing fan of the refrigerator does not accord with the actual working condition of the refrigerator, the high-speed operation of the freezing fan is caused in the production time, the running noise of the fan is large, and the user experience is low.
According to a first aspect of the present invention, there is provided a method for controlling the rotational speed of a freezing fan of a refrigerator, comprising: in the current operation period, detecting whether the temperature of the refrigerator evaporator reaches a target temperature before the operation time of the refrigerator freezing fan reaches a preset time, and obtaining a detection result; determining a control strategy for the rotating speed of the freezing fan of the refrigerator according to the detection result; and controlling the rotating speed of the freezing fan of the refrigerator according to the control strategy.
Further, the determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result comprises: before the running time of the refrigerator freezing fan reaches the preset time, and under the condition that the temperature of the refrigerator evaporator reaches the target temperature, determining the control strategy as follows: and controlling the refrigerating fan of the refrigerator to rotate at a reduced speed in the next operation period.
Further, in the next operation period, controlling the refrigerator freezing fan to rotate at a reduced speed comprises: acquiring the actual running time and the average rotating speed of the refrigerator freezing fan in the current running period, wherein the actual running time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually runs; calculating a target rotating speed according to the actual running time and the average rotating speed; and controlling the refrigerator freezing fan to rotate at a reduced speed by taking the target rotating speed as the initial rotating speed of the next operation period.
Further, the determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result comprises: after the running time of the refrigerator freezing fan reaches the preset time and the temperature of the refrigerator evaporator does not reach the target temperature, determining the control strategy as follows: and controlling the freezing fan of the refrigerator to rotate at an increased speed until the temperature of the evaporator of the refrigerator reaches the target temperature.
Further, the controlling the refrigerator freezing fan to rotate at an increased speed until the temperature of the refrigerator evaporator reaches the target temperature comprises: and controlling the rotating speed of the freezing fan of the refrigerator to increase by a specified amplitude at specified time intervals until the temperature of the evaporator of the refrigerator reaches the target temperature.
Further, the specified time is a preset proportion of the preset time.
Further, after the temperature of the evaporator of the refrigerator reaches the target temperature, the controlling the rotating speed of the freezing fan of the refrigerator according to the control strategy further comprises: acquiring the actual running time and the average rotating speed of the refrigerator freezing fan in the current running period, wherein the actual running time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually runs; calculating a target rotating speed according to the actual running time and the average rotating speed; and controlling the refrigerator freezing fan to rotate by taking the target rotating speed as the initial rotating speed of the next operation period.
Further, the calculating a target rotation speed according to the actual operation time and the average rotation speed includes: calculating the deviation between the actual running time and the preset time; and determining the target rotating speed according to the deviation.
Further, said determining said target speed based on said deviation comprises: determining a magnitude correction value based on the deviation; and determining the target rotating speed according to the amplitude correction value.
Further, the target rotation speed is calculated by the following formula:
Rn＝Rm*((K*(Ts-Ta)+Ta)/Ts)+Ro
wherein Rn represents the target rotation speed, rm represents the average rotation speed, ts represents the preset time, ta represents the actual operation time, ro represents an amplitude correction value, and K represents a preset correction coefficient.
Further, the determining a magnitude correction value based on the deviation comprises: determining the amplitude correction value as a first correction value in the case that the deviation is smaller than a first threshold value; determining a magnitude correction value as a second correction value in a case where the deviation is greater than or equal to the first threshold value and less than or equal to a second threshold value; determining a magnitude correction value as a third correction value if the deviation is greater than the second threshold; wherein the first correction value is smaller than the second correction value, the second correction value is smaller than the third correction value, and the first threshold value is smaller than the second threshold value.
According to a second aspect of the present invention, there is provided a control apparatus for a rotational speed of a freezing fan of a refrigerator, comprising: the detection unit is used for detecting whether the temperature of the refrigerator evaporator reaches a target temperature or not before the running time of the refrigerator freezing fan reaches the preset time in the current running period to obtain a detection result; the determining unit is used for determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result; and the control unit is used for controlling the rotating speed of the refrigerator freezing fan according to the control strategy.
The invention provides a method and a device for controlling the rotating speed of a refrigerating fan of a refrigerator, wherein the method comprises the following steps: in the current operation period, detecting whether the temperature of the refrigerator evaporator reaches a target temperature before the operation time of the refrigerator freezing fan reaches a preset time, and obtaining a detection result; determining a control strategy for the rotating speed of the refrigerating fan of the refrigerator according to the detection result; and controlling the rotating speed of the refrigerator freezing fan according to the control strategy. The technical problems that in the prior art, the rotating speed control of a freezing fan of a refrigerator is not in accordance with the actual working condition of the refrigerator, the freezing fan runs at a high speed in production time, and the fan running noise is large, and therefore user experience is low are solved.
Drawings
FIG. 1 is a schematic diagram of a method for controlling the rotational speed of a freezing fan of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a cooling control of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative method for controlling the rotational speed of a freezing fan of a refrigerator according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control device for controlling the rotational speed of a freezing fan of a refrigerator according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
The embodiment provides a method for controlling the rotating speed of a freezing fan of a refrigerator, and as shown in fig. 1, the method comprises the following steps:
and S11, detecting whether the temperature of the refrigerator evaporator reaches a target temperature before the running time of the refrigerator freezing fan reaches the preset time in the current running period, and obtaining a detection result.
Specifically, in the present solution, a controller of the refrigerator may be used as an execution main body of the method steps of the present application, the preset time may be an optimal operation time Ts predefined by a user, and in a current operation period, the present solution controls the compressor and the freezing fan to start synchronously.
And S13, determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result.
And S15, controlling the rotating speed of the refrigerator freezing fan according to the control strategy.
Specifically, the control strategy may be to increase or decrease the speed of the freezing fan of the refrigerator in the next operation period.
It should be noted here that, according to the scheme, the optimal operation time is set by a user, the actual working condition of the refrigerator is determined by detecting the refrigerator and detecting the relation between the time required by the refrigerator to reach the target temperature and the optimal operation time, and the rotating speed of the freezing fan is accurately controlled based on the actual working condition of the refrigerator, so that the technical problems that in the prior art, the rotating speed control of the freezing fan of the refrigerator is not accordant with the actual working condition of the refrigerator, the high-speed operation of the freezing fan is caused, the fan operation noise is large, and the user experience is low are solved.
Optionally, in step S13, determining a control strategy for the rotation speed of the freezing fan of the refrigerator according to the detection result includes:
step S131, before the running time of the refrigerator freezing fan reaches the preset time, and under the condition that the temperature of the refrigerator evaporator reaches the target temperature, determining the control strategy as follows: and controlling the refrigerating fan of the refrigerator to rotate at a reduced speed in the next operation period.
Specifically, when the refrigerator freezer fan is operated and the refrigerator reaches the target temperature before the predefined operation time Ts, i.e., the compressor is shut down, the freezer fan will be slowed down for the next operation cycle.
Optionally, in the next operation period, step S131 is to control the refrigerator freezing fan to rotate at a reduced speed, and includes:
step S1311, obtaining the actual running time and the average rotating speed of the refrigerator freezing fan in the current running period, wherein the actual running time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually runs;
step S1312, calculating a target rotating speed according to the actual running time and the average rotating speed;
and step S1313, controlling the refrigerator freezing fan to rotate at a reduced speed by taking the target rotating speed as the initial rotating speed of the next operation period.
Specifically, the rotation speed Rn of the next operation period is calculated based on the actual operation time Ta and the average rotation speed Rm of the freezing fan of the previous operation period. In order to avoid an unstable start-stop period, an adjustment coefficient K is added during calculation, that is, after the target rotation speed is obtained through calculation, the target rotation speed may be multiplied by K. For example, 50% of the rotation speed needs to be adjusted, and when the adjustment coefficient K is set to 0.5, the actual rotation speed will be adjusted by only 25%.
Optionally, in step S13, determining a control strategy for the rotation speed of the freezing fan of the refrigerator according to the detection result includes:
step S132, after the running time of the refrigerator freezing fan reaches the preset time, and under the condition that the temperature of the refrigerator evaporator does not reach the target temperature, determining the control strategy as follows: and controlling the freezing fan of the refrigerator to rotate at an increased speed until the temperature of the evaporator of the refrigerator reaches the target temperature.
Specifically, when the running time of the freezing fan of the refrigerator exceeds the preset time Ts, the refrigerator still does not reach the target temperature, the compressor continues to run at the moment, and the scheme controls the freezing fan of the refrigerator to rotate at an increased speed in the current period until the temperature of the evaporator of the refrigerator reaches the target temperature.
Optionally, in step S132, controlling the refrigerator freezing fan to rotate at an increased speed until the temperature of the refrigerator evaporator reaches the target temperature, including:
and step S1321, controlling the rotating speed of the refrigerator freezing fan to increase by a specified amplitude at specified time intervals until the temperature of the refrigerator evaporator reaches the target temperature.
Specifically, the system can be controlled to gradually increase the running rotating speed of the refrigerating fan until the target temperature is achieved, and the compressor is stopped.
Optionally, the specified time is a preset proportion of the preset time.
Specifically, when the preset operation time Ts of the freezing fan reaches 10%, the fan speed is increased by 10%,20%,30%,40% and 50% at the same speed, and the maximum speed increase is 50%.
Optionally, after the temperature of the evaporator of the refrigerator reaches the target temperature, the controlling the rotation speed of the freezing fan of the refrigerator according to the control strategy further includes:
acquiring the actual operation time and the average rotating speed of the refrigerator freezing fan in the current operation period, wherein the actual operation time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually operates;
calculating a target rotating speed according to the actual running time and the average rotating speed;
and controlling the refrigerator freezing fan to rotate by taking the target rotating speed as the initial rotating speed of the next operation period.
Specifically, the initial rotation speed Rn of the next operation period may be calculated according to the actual operation time Ta and the average rotation speed Rm of the freezing fan of the previous operation period.
Optionally, the calculating a target rotation speed according to the actual operation time and the average rotation speed includes:
calculating the deviation between the actual running time and the preset time;
and determining the target rotating speed according to the deviation.
Specifically, the freezing fan operates according to the operating rotating speed calculated by the control system, and when the operating time deviation (namely the ratio of the actual operating time Ta to the predefined operating time Ts) of the freezing fan is found to be large, the control system increases the speed adjustment range.
Optionally, the determining the target rotation speed according to the deviation includes:
determining a magnitude correction value based on the deviation;
and determining the target rotating speed according to the amplitude correction value.
Specifically, if the time deviation is less than 50%, the rotation speed will rapidly decrease; if the time deviation is above 200%, the rotational speed will rise rapidly, it being noted that rapid fall and rapid rise can be achieved by means of a magnitude correction value Ro. The boost mode of speed helps to rapidly reduce or increase speed if the last cycle is too short (empty load) or the load change is too great.
Alternatively, the target rotational speed may be calculated by the following formula:
Rn＝Rm*((K*(Ts-Ta)+Ta)/Ts)+Ro
wherein Rn represents the target rotational speed, rm represents the average rotational speed, ts represents the preset time, ta represents the actual operating time, ro represents an amplitude correction value, and K represents a preset correction coefficient.
It should be noted that the above formula for calculating the target rotation speed can be used for calculating the speed of the freezing fan in the next cycle, as well as the speed of the freezing fan in the next cycle.
Optionally, the determining, according to the deviation, an amplitude correction value includes:
determining the amplitude correction value as a first correction value in the case that the deviation is smaller than a first threshold value;
determining a magnitude correction value as a second correction value in a case where the deviation is greater than or equal to the first threshold value and less than or equal to a second threshold value;
determining a magnitude correction value as a third correction value if the deviation is greater than the second threshold;
wherein the first correction value is smaller than the second correction value, the second correction value is smaller than the third correction value, and the first threshold value is smaller than the second threshold value.
Specifically, the first threshold may be 50, the first correction value may be-200, the second correction value may be 0, the second threshold may be 200, and the third correction value may be +300. I.e. the amplitude correction values are different at different deviations.
Regarding the correspondence of the amplitude correction values Ro to the ratio Ta/Ts, the following table shows:
the present solution is described below with respect to the speed boost, speed reduction and speed boost modes, by way of example and with reference to fig. 2, respectively:
(1) Example of the rotation speed increase: the rotation speed of a fan is 1800rpm, the fan is not stopped within 60min of preset time, the fan is stopped by being lifted for 2 times to 1100rpm, the actual running time is 71min, and the starting rotation speed of the next cycle is calculated by a formula:
first, calculate the average rotation speed Rm = (1800 × 60+1980 × 6+2160 × 5)/71 = (integer) 1840rpm
Next cycle rotation speed Rn =1840 ((0.5 × (60-71) + 71)/60) +0=2008rpm
(2) Example of the reduction of the rotational speed: the operation speed of the freezing fan is 1800rpm, the freezing fan is stopped in 45min, the operation time is less than the preset time for 60min, and the starting speed of the next cycle is calculated by a formula as follows:
next cycle speed Rn =1800 × ((0.5 × (60-45) + 45)/60) +0=1575rpm
(3) Speed boost mode examples: the running speed of the freezing fan is 1200rpm and is not stopped within 60min of the preset time, the freezing fan is stopped after being lifted for 5 times to 1800rpm, the actual running time is 130min, the Ro value is 46.15% (namely obtained by 60/130), then the Ro value is 200rpm, and the starting speed of the next cycle is calculated by the formula:
firstly, calculating an average rotating speed Rm;
Rm＝(1200*60+1320*6+1440*6+1560*6+1680*6+1800*46)/130＝1467rpm
next cycle speed Rn =1467 ((0.5 × (60-130) + 130)/60) +200 =2522rpm)
The method for controlling the cooling of the refrigerator before the rotating speed of the freezing fan is accurately controlled according to the working condition of the mobile phone of the refrigerator is described by combining the following steps with the figure 3:
and in the first operation period, the compressor is started to operate in advance, the air doors of all the chambers are closed at the moment, and the refrigerating fan does not work. When the refrigerator runs to the temperature of a defrosting sensor on a freezing evaporator is less than or equal to minus 10 ℃, each compartment air door is opened, a freezing fan starts to work, the refrigerator is started to run at the lowest rotating speed firstly to the temperature of the defrosting sensor on the evaporator is less than or equal to minus 20 ℃, and then the fan starts to run up to the highest running rotating speed until the compressor of the refrigerator reaches a shutdown condition;
and in the second operation period and the third operation period after electrification, the compressor and the refrigerating fan are synchronously started, and the refrigerating fan operates at the highest operation speed and does not depend on the operation time in the period. After these periods the control system will automatically start and gradually slow down to reach the predefined period run time Ts of the freezing fan.
When a short power failure occurs, the control system will not start from the first step again, but continue the rotation speed of the previous period, and when the power failure exceeds 1 minute, the control system will start again.
In summary, the invention provides a method for controlling the rotating speed of a refrigerating fan of a refrigerator, which presets the optimal operating rotating speed and the operating time of the refrigerating fan according to the selected operating characteristics of the refrigerating fan, compares the actual operating time of the refrigerator, and accurately calculates the actual operating rotating speed requirement under the working condition through a control system and executes the actual operating rotating speed requirement according to the actual operating time requirement, so that the refrigerating fan can operate according to the optimal operating rotating speed or the rotating speed value closest to the optimal operating rotating speed under different working conditions, the long-time high-rotating-speed operation of the refrigerating fan is avoided, the operating noise of the fan is reduced, and the complaint of users on the operating noise of the refrigerator is reduced.
Example two
The present disclosure further provides a device for controlling a rotational speed of a freezing fan of a refrigerator, which can be disposed in a controller of the refrigerator, and can also be used to perform the method of the first embodiment, as shown in fig. 4, the device includes:
the detection unit 40 is used for detecting whether the temperature of the refrigerator evaporator reaches a target temperature before the running time of the refrigerator freezing fan reaches the preset time in the current running period to obtain a detection result;
the determining unit 42 is used for determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result;
and the control unit 44 is used for controlling the rotating speed of the refrigerator freezing fan according to the control strategy.
Through each unit in the above-mentioned device, this scheme has solved prior art, and the control of refrigerator freezing fan rotational speed is not conform to the operating condition of refrigerator, thereby leads to freezing fan to produce high-speed operation of time, the big technical problem that user experience is low of fan running noise.
Of course, it can be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above can be implemented by instructing relevant hardware (such as a processor, a controller, etc.) by a computer program, and the program can be stored in a computer-readable storage medium, and when executed, the program can include the processes of the embodiments of the methods described above. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (12)
1. A control method for the rotating speed of a refrigerating fan of a refrigerator is characterized by comprising the following steps:
in the current operation period, detecting whether the temperature of a refrigerator evaporator reaches a target temperature before the operation time of a refrigerator freezing fan reaches a preset time, and obtaining a detection result;
determining a control strategy for the rotating speed of the freezing fan of the refrigerator according to the detection result;
and controlling the rotating speed of the refrigerator freezing fan according to the control strategy.
2. The method of claim 1, wherein determining a control strategy for the rotational speed of the freezer fan of the refrigerator based on the detection comprises:
before the running time of the refrigerator freezing fan reaches the preset time, under the condition that the temperature of the refrigerator evaporator reaches the target temperature, determining the control strategy as follows: and controlling the refrigerating fan of the refrigerator to rotate at a reduced speed in the next operation period.
3. The method of claim 2, wherein said controlling said refrigerator freezer fan to rotate at a reduced speed during a next operational cycle comprises:
acquiring the actual running time and the average rotating speed of the refrigerator freezing fan in the current running period, wherein the actual running time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually runs;
calculating a target rotating speed according to the actual running time and the average rotating speed;
and controlling the refrigerator freezing fan to rotate at a reduced speed by taking the target rotating speed as the initial rotating speed of the next operation period.
4. The method of claim 1, wherein determining a control strategy for the rotational speed of the freezer fan of the refrigerator based on the detection comprises:
after the running time of the refrigerator freezing fan reaches the preset time, and under the condition that the temperature of the refrigerator evaporator does not reach the target temperature, determining the control strategy as follows: and controlling the freezing fan of the refrigerator to rotate at an increased speed until the temperature of the evaporator of the refrigerator reaches the target temperature.
5. The method of claim 1, wherein said controlling said refrigerator freezer fan to rotate at an increased speed until a refrigerator evaporator temperature reaches said target temperature comprises:
and controlling the rotating speed of the freezing fan of the refrigerator to be increased by a specified amplitude at specified time intervals until the temperature of the evaporator of the refrigerator reaches the target temperature.
6. The method of claim 5, wherein the specified time is a preset proportion of the preset time.
7. The method of claim 4 or 5, wherein said controlling the rotational speed of the refrigerator freezer fan in accordance with the control strategy after the refrigerator evaporator temperature reaches the target temperature further comprises:
acquiring the actual running time and the average rotating speed of the refrigerator freezing fan in the current running period, wherein the actual running time is the time when the temperature of the refrigerator evaporator reaches the target temperature and the refrigerator freezing fan actually runs;
calculating a target rotating speed according to the actual running time and the average rotating speed;
and controlling the refrigerator freezing fan to rotate by taking the target rotating speed as the initial rotating speed of the next operation period.
8. The method of claim 7, wherein calculating a target speed based on the actual run time and the average speed comprises:
calculating the deviation between the actual running time and the preset time;
and determining the target rotating speed according to the deviation.
9. The method of claim 8, wherein said determining the target rotational speed based on the deviation comprises:
determining a magnitude correction value based on the deviation;
and determining the target rotating speed according to the amplitude correction value.
10. The method of claim 9, wherein the target rotational speed is calculated by the formula:
Rn＝Rm*((K*(Ts-Ta)+Ta)/Ts)+Ro
wherein Rn represents the target rotational speed, rm represents the average rotational speed, ts represents the preset time, ta represents the actual operating time, ro represents an amplitude correction value, and K represents a preset correction coefficient.
11. The method of claim 9, wherein determining a magnitude correction value based on the deviation comprises:
determining the amplitude correction value as a first correction value in the case that the deviation is smaller than a first threshold value;
determining a magnitude correction value as a second correction value in a case where the deviation is greater than or equal to the first threshold value and less than or equal to a second threshold value;
in the case where the deviation is greater than the second threshold, determining the amplitude correction value as a third correction value;
wherein the first correction value is less than the second correction value, the second correction value is less than the third correction value, and the first threshold value is less than the second threshold value.
12. The utility model provides a controlling means of refrigerator freezing fan rotational speed which characterized in that includes:
the detection unit is used for detecting whether the temperature of the refrigerator evaporator reaches a target temperature or not before the running time of the refrigerator freezing fan reaches preset time in the current running period to obtain a detection result;
the determining unit is used for determining a control strategy for the rotating speed of the refrigerator freezing fan according to the detection result;
and the control unit is used for controlling the rotating speed of the refrigerator freezing fan according to the control strategy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211053459.9A CN115451644A (en) | 2022-08-31 | 2022-08-31 | Method and device for controlling rotating speed of refrigerating fan of refrigerator |
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| CN202211053459.9A CN115451644A (en) | 2022-08-31 | 2022-08-31 | Method and device for controlling rotating speed of refrigerating fan of refrigerator |
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| CN202211053459.9A Pending CN115451644A (en) | 2022-08-31 | 2022-08-31 | Method and device for controlling rotating speed of refrigerating fan of refrigerator |
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