CN109489222B - Refrigerator fan control method - Google Patents
Refrigerator fan control method Download PDFInfo
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- CN109489222B CN109489222B CN201710824346.7A CN201710824346A CN109489222B CN 109489222 B CN109489222 B CN 109489222B CN 201710824346 A CN201710824346 A CN 201710824346A CN 109489222 B CN109489222 B CN 109489222B
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Abstract
The invention discloses a refrigerator fan control method, which comprises the following steps: a wind speed division step, namely dividing wind speed gears including a high gear and a low gear; freezer fan wind speed control step includes: (1) detecting the door opening state, and controlling the evaporation fan to operate at a low wind level or stop operating if the current door body is opened; (2) judging the current running state of the compressor, and controlling the evaporation fan and the condensation fan to run at a high wind gear if the compressor is running; (3) and judging the current defrosting state, if the current defrosting mode is adopted, controlling the evaporation fan and the condensation fan to operate at a high wind gear respectively, and otherwise, controlling the evaporation fan and the condensation fan to operate at a low wind gear or stop operating respectively. According to the control method, the evaporation fan is controlled to run at a low wind level or stop running in the door opening state so as to realize energy conservation; when the door is closed and the compressor is running, the evaporation fan and the condensation fan are controlled to run at a high wind gear respectively so as to improve the heat exchange efficiency.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment control, in particular to a refrigerator fan control method.
Background
The existing refrigerator only has two states of starting and shutting by using a fan working mode, the operation of a condensing fan is synchronous with a compressor, the fan operates when the compressor works, and the fan stops operating when the compressor stops, and the working mode mainly has the advantages that the heat dissipation after the compressor stops working is realized in a natural heat dissipation mode, and the heat dissipation speed is low; the working mode of the evaporation fan is constant rotation along with the power supply, the working state is single, the running state of the fan cannot be adjusted according to the refrigeration working state, and the energy consumption is large.
Disclosure of Invention
The invention provides a refrigerator fan control method, which aims to solve the technical problem that the fan working mode of the existing refrigerator is only in a starting state and a shutdown state, so that the energy consumption is high.
In order to solve the technical problems, the invention adopts the following technical scheme:
a refrigerator fan control method comprises the following steps:
a wind speed division step, namely dividing wind speed gears, wherein the wind speed gears at least comprise a high gear and a low gear, the high gear at least comprises a wind speed value t11, and the low gear at least comprises a wind speed value t21, wherein t11 is greater than t21 is greater than 0;
freezer fan wind speed control step includes:
(1) detecting the door opening state, controlling the evaporation fan to operate at a low wind level or stop operating if the current door body is opened, and executing the step (2) if the current door body is closed;
(2) judging the current running state of the compressor, if the compressor is running, controlling the evaporation fan and the condensation fan to run at a high wind gear respectively, otherwise, executing the step (3);
(3) and judging the current defrosting state, if the current defrosting mode is adopted, controlling the evaporation fan and the condensation fan to operate at a high wind gear respectively, and otherwise, controlling the evaporation fan and the condensation fan to operate at a low wind gear or stop operating respectively.
Further, in the step (1), if the current door body is closed, calculating the time length from the current time to the last door closing time, and if the time length from the current time to the last door closing time is greater than a set threshold, executing the step (2).
Further, in the step (1), if the current door body is opened, the step of further judging the current operation state of the evaporation fan is further included, if the evaporation fan is currently operating at a high wind gear, the evaporation fan is controlled to operate at a low wind gear, and if the evaporation fan is currently operating at a low wind gear or is stopped, the current operation state of the evaporation fan is kept.
Further, the high wind gear comprises two wind speed values t11, t12, wherein t11 < t12, and the low wind gear comprises two wind speed values t21, t22, wherein t21 > t 22.
Further, a step of judging a current day/night mode is further included between the step (1) and the step (2), if the current day/night mode is the night mode, the step (21) is executed, the current running state of the compressor is judged, and if the compressor is running, the evaporation fan and the condensation fan are controlled to run at a high wind speed value t11 respectively.
Further, in the step (21), the current operation state of the compressor is judged, if the compressor stops operating, the step (31) is executed, the current defrosting state is judged, if the compressor is in the defrosting mode, the evaporation fan is controlled to operate at the wind speed value t11 of the high wind gear, otherwise, the evaporation fan is controlled to operate at the wind speed value t22 of the low wind gear, and the condensation fan is controlled to operate at the wind speed value of the low wind gear.
Further, in the step of judging the current day/night mode, if the current day/night mode is not the night mode, the step (22) is executed to judge the current running state of the compressor, and if the compressor is running, the evaporation fan and the condensation fan are controlled to run at the wind speed value t12 of the high wind level respectively.
Further, in the step (22), if the compressor stops operating, executing the step (32) and judging the current defrosting state, if the compressor is currently in the defrosting mode, controlling the evaporation fan to operate at the wind speed value t12 of the high wind gear, otherwise, controlling the evaporation fan to operate at the wind speed value t21 of the low wind gear, and controlling the condensation fan to operate at the wind speed value t21 or t22 of the low wind gear.
Compared with the prior art, the invention has the advantages and positive effects that: according to the refrigerator fan control method, the air speeds of the evaporation fan and the condensation fan are correspondingly adjusted by respectively detecting the opening and closing state of the door body, the running state of the compressor and the defrosting state, and when the door is opened, the evaporation fan is controlled to run at a low wind level or stop running, so that the cold loss is reduced to realize energy conservation; when the door is closed and the compressor is running, the evaporation fan and the condensation fan are controlled to run at a high wind gear respectively so as to improve the heat exchange efficiency. When in defrosting state, the evaporation fan is adjusted to run at high speed, so that the heat of the heater can flow circularly more effectively, and the uniform and rapid defrosting effect is achieved.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a diagram of an electric control system of a refrigerator corresponding to the refrigerator fan control method provided by the invention;
fig. 2 is a flowchart of an embodiment of a freezer fan control method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, this embodiment provides a method for controlling a refrigerator fan, as shown in fig. 1, the method is an electric control system diagram of a refrigerator in this embodiment, and an electric control cooling system of the refrigerator at least includes a controller, a temperature sensing probe, a heating wire, an evaporation fan, a condensation fan, and a compressor. The controller receives the temperature of the temperature sensing probe, controls the operation of the refrigeration compressor and the fan and controls the defrosting of the heater, wherein the rotating speed control signal end is added to the fan operation part and is used for controlling the rotating speeds of the evaporation fan and the condensation fan. The refrigerator fan control method of the embodiment comprises the following steps:
a wind speed division step, namely dividing wind speed gears, wherein the wind speed gears at least comprise a high gear and a low gear, the high gear at least comprises a wind speed value t11, and the low gear at least comprises a wind speed value t21, wherein t11 is more than t21 and more than 0;
the wind speed control step of the freezer fan, as shown in fig. 2, includes:
s1, detecting the door opening state, controlling the evaporation fan to operate at a low wind level or stop operating if the current door body is opened, and executing the step S2 if the current door body is closed;
s2, judging the current running state of the compressor, if the compressor is running, controlling the evaporation fan and the condensation fan to run at a high wind gear respectively, otherwise, executing the step S3;
and S3, judging the current defrosting state, if the current defrosting state is in a defrosting mode, controlling the evaporation fan and the condensation fan to operate at a high wind gear respectively, and otherwise, controlling the evaporation fan and the condensation fan to operate at a low wind gear or stop operating respectively.
When the refrigerator is designed with an energy-saving mode or a night mode or a long-term door-opening-free state, the cold energy in the refrigerator is not lost, the evaporation fan runs at low speed during the period, so that the energy can be effectively saved, and if the door opening action is detected, the evaporation fan is controlled to run at low wind gear or stop running, so that the cold energy loss is reduced, and the energy is saved; or adjusting the normal high-speed operation of the evaporation fan when the night mode is finished. The condensing fan mainly dissipates heat for the condenser and the compressor, and the controller controls the condensing fan to operate at a low speed when the compressor stops operating, for example, the original rotating speed is 1550r/min, the operating speed is 800r/min, and compared with a zero-speed working condition, the low-speed operation can be more effectively cooled, so that the heat exchange rate of a product and the safety under a high-temperature condition are improved. The controller is also controllable in the air speed of the evaporation fan, the evaporation fan mainly participates in cold circulation in the cabinet, the evaporation fan runs at a high speed when the compressor normally runs to increase cold flow and improve uniformity of temperature in the cabinet, when the temperature is reduced to a compressor stop point, the compressor stops running, and after the compressor stops running, the compressor stops defrosting, and the other one is that the compressor stops running without defrosting, and belongs to the technical field that the temperature in the cabinet reaches a set temperature to stop the compressor, if the defrosting is not carried out currently, the controller adjusts the low-speed running or stopping running of the evaporation fan to achieve an energy-saving effect; when in the defrosting mode, the compressor is stopped at the moment, and the evaporation fan is set to run at a high speed so as to improve the defrosting efficiency.
According to the refrigerator fan control method, the opening and closing state of the door body, the running state of the compressor and the defrosting state are respectively detected, the wind speeds of the evaporation fan and the condensation fan are correspondingly adjusted, if the door body is closed currently, the fan is controlled according to the running state of the compressor, and if the compressor is running, the evaporation fan and the condensation fan are controlled to respectively run at a high wind gear, so that the heat exchange efficiency is improved. When the defrosting state is achieved, the low-speed operation of the evaporation fan is adjusted, the heat of the heater can flow circularly more effectively, and the uniform and rapid defrosting effect is achieved. According to the method, the wind speed of the fan is comprehensively judged and controlled according to the conditions, so that the energy-saving effect is achieved, and the maximization of the operation efficiency of the refrigerator is met.
In step S1, if the current door body is closed, the time length from the current time to the last time of closing the door is calculated, and the time length from the current time to the last time of closing the door is greater than the set threshold, then step S2 is executed. And if the time length from the current time to the last door closing time is greater than a set threshold value, if no door opening action exists within 2 hours, the state belongs to a long-term door closing state, and the wind speed of the fan is controlled and adjusted according to the running state of the compressor. Wherein, setting the threshold as a constant value needs to be written into the control program in advance.
In order to reduce the start-stop rate of the fan, prolong the service life of the fan, and prevent the fan from being damaged by changing the speed greatly in a short time, in step S1, if the current door body is opened, the method further comprises the step of further judging the current running state of the evaporation fan, if the evaporation fan is running at a high wind gear currently, the evaporation fan is controlled to run at a low wind gear, and if the evaporation fan is running at a low wind gear currently or is stopped, the current running state of the evaporation fan is kept. If the evaporation fan is controlled to operate at a low wind gear, the current operation state of the evaporation fan is kept, and the number of control commands can be reduced.
In order to increase the adjustable range of the wind speed values of each wind gear, the high wind gear comprises two wind speed values t11 and t12, wherein t11 is less than t12, and the low wind gear comprises two wind speed values t21 and t22, wherein t21 is greater than t 22. The wind speed values of the high gear and the low gear are not limited to the two wind speed values, and a plurality of wind speed values can be set according to actual needs.
For some commercial refrigerators, according to the use characteristics, the refrigerator is used in the daytime and rarely used at night, a day/night mode is set for saving energy consumption, a step of judging the current day/night mode is further included between step S1 and step S2, and if the current day/night mode is the night mode, the step S21 is executed to determine the current operation state of the compressor, and if the compressor is operating, the evaporation fan and the condensation fan are controlled to operate at the high wind speed value t11, that is, when in the night mode, meanwhile, when the compressor is operated, the evaporation fan and the condensation fan are controlled to operate at high wind gear respectively in order to improve the heat exchange efficiency, because the cold loss in the night mode is small, and the load capacity in the cabinet is small, the evaporation fan and the condensation fan are controlled to operate at a relatively small wind speed value t11 in a high wind gear respectively, so that the energy-saving effect is achieved.
In the step S21, the current operation state of the compressor is determined, if the compressor stops operating, because the compressor has two states after the compressor stops operating, one is to stop defrosting the compressor, and the other is not to defrost, which belongs to the case that the compressor stops when the temperature in the cabinet reaches the set temperature, so that it is necessary to determine whether defrosting is currently performed, the step S31 is performed to determine the current defrosting state, if the current defrosting mode is in, the evaporation fan is controlled to operate at the wind speed value t11 of the high wind gear, otherwise, the evaporation fan is controlled to operate at the wind speed value t22 of the low wind gear, and the condensation fan is operated at the wind speed value t11 or t12 of the high wind gear. That is, when in the defrosting mode, the compressor is stopped at this time, the evaporation fan is operated at a high wind level to improve defrosting efficiency, and since the present mode is the night mode, the evaporation fan is controlled to be operated at a relatively small wind speed value t11 in the high wind level because the loss of cold energy in the night mode is small. If defrosting is not carried out currently, the controller adjusts the evaporation fan to operate at a low wind level, and because the night mode is currently the night mode, the cold loss of the night mode is small, the evaporation fan is controlled to operate at a relatively small wind speed value t22 in the low wind level.
On the contrary, in the step of determining the current day/night mode, if the current day/night mode is not the night mode, that is, the day mode, the usage amount is large in the mode, and the switching is frequent, so that the cooling loss is large, step S22 is executed, the current operation state of the compressor is determined, and if the compressor is operating, the evaporation fan and the condensation fan are controlled to operate at the wind speed value t12 of the high wind level respectively. Also during the daytime mode, freezer frequency of use is high, frequent switch, and consequently cold volume loss is big, and the capacity is great in the corresponding cabinet, if the compressor is moving this moment, in order to improve the high wind speed value t12 operation of heat exchange efficiency control evaporation fan and condensation fan with the high-grade of wind respectively to satisfy the refrigeration demand, reach quick refrigeration effect.
In step S22, if the compressor stops operating, step S32 is executed to determine the current defrosting state, if the compressor is currently in the defrosting mode, the evaporation fan is controlled to operate at the high wind speed value t12, otherwise, the evaporation fan is controlled to operate at the low wind speed value t21, and the condensation fan operates at the low wind speed value t21 or t 22. Also when the mode is in daytime, the freezer is high in use frequency and is frequently switched on and off, so that the cold loss is large, the capacity in the corresponding cabinet is large, if the compressor does not operate at the moment, but defrosting is performed, in order to improve the defrosting efficiency, the evaporation fan is controlled to operate at the high wind speed value t12 of the high wind gear, the heat of the heater is more effectively circulated and flows, the uniform and rapid defrosting effect is achieved, if defrosting does not occur, the evaporation fan is controlled to operate at the wind speed value t21 of the low wind gear, the condensation fan operates at the wind speed value t21 or t22 of the low wind gear, the heat dissipation speed of the condenser is increased, and the energy consumption is saved while the requirement on the heat dissipation safety.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. A refrigerator fan control method is characterized by comprising the following steps:
a wind speed division step, namely dividing wind speed gears, wherein the wind speed gears at least comprise a high gear and a low gear, the high gear at least comprises a wind speed value t11, and the low gear at least comprises a wind speed value t21, wherein t11 is greater than t21 is greater than 0;
freezer fan wind speed control step includes:
(1) detecting the door opening state, controlling the evaporation fan to operate at a low wind level or stop operating if the current door body is opened, and executing the step (2) if the current door body is closed;
(2) judging the current running state of the compressor, if the compressor is running, controlling the evaporation fan and the condensation fan to run at a high wind gear respectively, otherwise, executing the step (3);
(3) judging the current defrosting state, if the current defrosting state is in a defrosting mode, controlling the evaporation fan and the condensation fan to respectively operate at a high wind gear, otherwise, controlling the evaporation fan and the condensation fan to respectively operate at a low wind gear or stop operating;
the high wind gear comprises two wind speed values t11 and t12, wherein t11 is less than t12, and the low wind gear comprises two wind speed values t21 and t22, wherein t21 is greater than t 22;
and (2) judging the current day/night mode, if the current day/night mode is the night mode, executing the step (21), judging the current running state of the compressor, and if the compressor is running, controlling the evaporation fan and the condensation fan to respectively run at a high-wind-level wind speed value t 11.
2. The refrigerator fan control method according to claim 1, wherein in the step (1), if the current door body is closed, the time length from the current time to the last door closing time is calculated, and the time length from the current time to the last door closing time is greater than a set threshold, the step (2) is executed.
3. The refrigerator fan control method according to claim 1, wherein in step (1), if the current door body is opened, the method further comprises the step of further judging the current operation state of the evaporation fan, if the evaporation fan is currently operating at a high wind gear, the evaporation fan is controlled to operate at a low wind gear, and if the evaporation fan is currently operating at a low wind gear or is stopped, the current operation state of the evaporation fan is maintained.
4. The refrigerator fan control method according to claim 1, wherein in the step (21), the current operation state of the compressor is judged, if the compressor stops operating, the step (31) is executed, the current defrosting state is judged, if the compressor is currently in a defrosting mode, the evaporation fan is controlled to operate at a high wind speed value t11, otherwise, the evaporation fan is controlled to operate at a low wind speed value t22, and the condensation fan is controlled to operate at a low wind speed value.
5. The refrigerator fan control method according to claim 1, wherein in the step of judging the current day/night mode, if the current day/night mode is not the night mode, the step (22) of judging the current operation state of the compressor is performed, and if the compressor is operating, the evaporation fan and the condensation fan are controlled to operate at a high wind speed value t12 respectively.
6. The refrigerator fan control method according to claim 5, wherein in the step (22), if the compressor stops operating, the step (32) is executed to judge the current defrosting state, if the compressor is currently in the defrosting mode, the evaporation fan is controlled to operate at the wind speed value t12 of the high wind gear, otherwise, the evaporation fan is controlled to operate at the wind speed value t21 of the low wind gear, and the condensation fan is controlled to operate at the wind speed value t21 or t22 of the low wind gear.
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| CN201710824346.7A CN109489222B (en) | 2017-09-13 | 2017-09-13 | Refrigerator fan control method |
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| CN201710824346.7A CN109489222B (en) | 2017-09-13 | 2017-09-13 | Refrigerator fan control method |
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| CN109489222B true CN109489222B (en) | 2021-04-09 |
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| CN112066631B (en) * | 2019-06-11 | 2023-02-17 | 青岛海尔特种电冰柜有限公司 | Refrigerator fan control method |
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| JP2013245869A (en) * | 2012-05-25 | 2013-12-09 | Sharp Corp | Refrigerator |
| CN104359283A (en) * | 2014-11-14 | 2015-02-18 | 合肥美的电冰箱有限公司 | Control method and device for air cooling refrigerator and air cooling refrigerator |
| KR20150084164A (en) * | 2014-01-13 | 2015-07-22 | 주식회사 대유위니아 | Control method for defrosting operation in refrigerator having humidity maintenance |
| CN205641752U (en) * | 2016-03-25 | 2016-10-12 | 青岛海尔股份有限公司 | Air -cooling refrigerator |
| CN106091566A (en) * | 2016-06-17 | 2016-11-09 | 青岛海尔股份有限公司 | A kind of control method for wind cooling refrigerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101918224B1 (en) * | 2012-01-31 | 2018-11-13 | 엘지전자 주식회사 | Refrigerator and Control method of the same |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013245869A (en) * | 2012-05-25 | 2013-12-09 | Sharp Corp | Refrigerator |
| KR20150084164A (en) * | 2014-01-13 | 2015-07-22 | 주식회사 대유위니아 | Control method for defrosting operation in refrigerator having humidity maintenance |
| CN104359283A (en) * | 2014-11-14 | 2015-02-18 | 合肥美的电冰箱有限公司 | Control method and device for air cooling refrigerator and air cooling refrigerator |
| CN205641752U (en) * | 2016-03-25 | 2016-10-12 | 青岛海尔股份有限公司 | Air -cooling refrigerator |
| CN106091566A (en) * | 2016-06-17 | 2016-11-09 | 青岛海尔股份有限公司 | A kind of control method for wind cooling refrigerator |
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