CN113218128A - Freezing fan heating control method of air-cooled refrigerator, air-cooled refrigerator and freezing fan - Google Patents
Freezing fan heating control method of air-cooled refrigerator, air-cooled refrigerator and freezing fan Download PDFInfo
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- CN113218128A CN113218128A CN202110316754.8A CN202110316754A CN113218128A CN 113218128 A CN113218128 A CN 113218128A CN 202110316754 A CN202110316754 A CN 202110316754A CN 113218128 A CN113218128 A CN 113218128A
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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
- 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
- F25D23/00—General constructional features
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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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- 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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- Combustion & Propulsion (AREA)
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- 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 a heating control method of a freezing fan of an air-cooled refrigerator, the air-cooled refrigerator and the freezing fan; the method comprises the following steps: detecting and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not; when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal; if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working; when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, and the heating wire arranged on the freezing fan is controlled to heat for a preset time, and then the freezing fan is controlled to start running again. The invention can effectively solve the risk that the freezing fan is not rotated after being frozen, ensure the normal use of the freezing fan and prolong the service life of the freezing fan.
Description
Technical Field
The invention relates to the technical field of air-cooled refrigerators, in particular to a heating control method for a freezing fan of an air-cooled refrigerator, the air-cooled refrigerator and the freezing fan.
Background
The most important advantage of the air-cooled refrigerator is that the refrigerator has no frost. The air-cooled refrigerator is not always wet like a direct-cooled refrigerator, and foods are not adhered to each other. Moreover, the air-cooled refrigerator can continuously circulate cold air, and the cold air is filtered by the deodorization system, so that the smell in the refrigerator can be kept fresh for a long time, and the harsh 'refrigerator smell' can not be generated. In addition, the air-cooled refrigerator can automatically defrost.
The freezing fan in the freezing wind channel of most air-cooled refrigerators in the prior art does not have the heater strip function, has the risk that the freezing fan is frozen and leads to the refrigerator refrigeration effect poor, and inconvenient user uses.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a refrigerating fan heating control method of an air-cooled refrigerator, the air-cooled refrigerator and a refrigerating fan aiming at the defects in the prior art. The invention can effectively solve the risk that the freezing fan is not rotated after being frozen, ensure the normal use of the freezing fan and prolong the service life of the freezing fan.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a heating control method for a freezing fan of an air-cooled refrigerator comprises the following steps:
detecting the temperature of a refrigerating chamber or the temperature of a freezing chamber of the air-cooled refrigerator, and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not;
when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal;
if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working;
when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, and the heating wire arranged on the freezing fan is controlled to heat for a preset time, and then the freezing fan is controlled to start running again.
The continuous data copying control method based on the mobile terminal comprises the following steps of controlling the refrigerating fan to stop running and controlling a heating wire arranged on the refrigerating fan to heat for a preset time and then controlling the refrigerating fan to start again after detecting that a feedback signal of the refrigerating fan is abnormal, and further comprises the following steps:
recording the abnormal times of the feedback signal of the refrigerating fan;
when the abnormal times of the feedback signals of the freezing fan are continuously detected to be more than or equal to a first preset value, alarming is carried out to prompt and display the fan fault.
The continuous data replication control method based on the mobile terminal is characterized in that if a feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration, the freezing fan stops working until the temperatures of the refrigerating chamber and the freezing chamber reach a stop condition, and the fan heating wire starts working according to the following steps:
when the PWM feedback signal of the freezing fan is detected to be normal, the freezing fan continues to operate the air-cooled refrigerator for normal refrigeration, and whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset shutdown condition or not is detected in real time;
when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset stop condition, controlling the freezing fan to stop and controlling the heating wire to perform heating work;
and detecting whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches the preset starting condition again.
The continuous data copying control method based on the mobile terminal comprises the following steps of controlling the refrigerating fan to stop running and controlling a heating wire arranged on the refrigerating fan to heat for a preset time and then controlling the refrigerating fan to start again after detecting that a feedback signal of the refrigerating fan is abnormal, wherein the step of controlling the refrigerating fan to stop running comprises the following steps:
and when the PWM feedback signal of the freezing fan is detected to be abnormal, controlling the freezing fan to stop working, controlling the freezing fan to stop running, controlling a heating wire arranged on the freezing fan to heat for a preset time, stopping heating, controlling the fan to start working again, and detecting the PWM feedback signal of the freezing fan again.
The continuous data copying control method based on the mobile terminal is characterized in that the preset starting condition is that the temperature of a refrigerating chamber is detected to reach a refrigerating chamber sensor starting temperature Tr1, or the temperature of a freezing chamber is detected to reach a freezing chamber sensor starting temperature Tf 1;
the stop condition is that the temperature of the refrigerating compartment is detected to reach the refrigerating compartment sensor stop temperature Tr2, or the temperature of the freezing compartment is detected to reach the freezing compartment sensor stop temperature Tf 2.
The continuous data replication control method based on the mobile terminal, wherein the freezing fan comprises:
the blade assembly is provided with a plurality of fan-shaped blades;
a base on which the blade assembly is rotatably mounted;
the heating wire is wound at the joint of the blade assembly and the base and is used for heating and unfreezing the freezing fan;
the heating is performed for a predetermined time of ten minutes, and the first predetermined value is 3 times.
A freezing fan for an air-cooled refrigerator, comprising:
the blade assembly is provided with a plurality of fan-shaped blades;
a base on which the blade assembly is rotatably mounted;
the heating wire is wound on the joint of the blade assembly and the base and used for heating and unfreezing the freezing fan.
The base comprises a circular support, an installation part for installing the blade assembly is arranged in the center of the circular support, and a hollow ventilation area is arranged between the installation part and the outer edge of the circular support; the round support side is provided with and is used for fixing the freezing fan at the installation foot of forced air cooling refrigerator, be provided with the screw on the installation foot, the heater strip winding sets up the installation department.
The freezing fan, wherein, the blade subassembly includes:
a circular frame;
the fan-shaped blade group is connected and arranged in the circular frame, and a plurality of fan-shaped blades are arranged on the fan-shaped blade group;
and the mounting base is arranged in the middle of the circular frame fan-shaped blade group.
An air-cooled refrigerator comprises any one of the freezing fans, and is realized by adopting a heating control method of the freezing fan of any one of the air-cooled refrigerators.
The invention provides a freezing fan heating control method of an air cooling refrigerator, the air cooling refrigerator and a freezing fan, wherein the method comprises the following steps: detecting and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not; when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal; if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working; when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, and the heating wire arranged on the freezing fan is controlled to heat for a preset time, and then the freezing fan is controlled to start running again. The invention can effectively solve the risk that the freezing fan is not rotated after being frozen, ensure the normal use of the freezing fan and prolong the service life of the freezing fan.
Drawings
Fig. 1 is an exploded view of a freezing fan for an air-cooled refrigerator according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a base mounting heating wire of a freezing fan for an air-cooled refrigerator according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method for controlling heating of a freezing fan of an air-cooled refrigerator according to a preferred embodiment of the present invention.
Fig. 4 is a flowchart of a specific application embodiment of the heating control method of the freezing fan of the air-cooled refrigerator according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The most important advantage of the air-cooled refrigerator is that the refrigerator has no frost. The air-cooled refrigerator is not always wet like a direct-cooled refrigerator, and foods are not adhered to each other. Moreover, the air-cooled refrigerator can continuously circulate cold air, and the cold air is filtered by the deodorization system, so that the smell in the refrigerator can be kept fresh for a long time, and the harsh 'refrigerator smell' can not be generated. In addition, the air-cooled refrigerator can automatically defrost.
The freezing fan in the freezing wind channel of most air-cooled refrigerators in the prior art does not have the heater strip function, has the risk that the freezing fan is frozen and leads to the refrigerator refrigeration effect poor, and inconvenient user uses.
In order to solve the problems, the invention adopts a heating wire structure arranged on a freezing fan of an air-cooled refrigerator, when the freezing fan of the air-cooled refrigerator works, firstly, whether a refrigerating chamber or a freezing chamber reaches a starting condition is judged, if yes, the freezing fan works, a fan heating wire does not work, meanwhile, a refrigerator main board detects a PWM (pulse width modulation) feedback signal of the fan, if the PWM feedback signal of the fan is normal, the refrigerator normally refrigerates, and the freezing fan stops working and the fan heating wire starts to work until the temperatures of the refrigerating chamber and the freezing chamber reach the stopping condition. If the PWM feedback signal of the fan is abnormal, the main board controls the fan to stop working, the fan heating wire stops heating after continuously heating for t minutes, and the fan starts working and detects the PWM feedback signal again. And if the PWM feedback signal is detected to be abnormal for 3 times continuously, displaying the fan fault on the display screen of the refrigerator, and prompting a user to contact after-sale treatment.
Example apparatus
Referring to fig. 1 and fig. 2, fig. 1 is an exploded view of a freezing fan for an air-cooled refrigerator according to an embodiment of the present invention, and fig. 2 is a schematic structural view of a heating wire installed on a base of the freezing fan for the air-cooled refrigerator according to the embodiment of the present invention.
As shown in fig. 1 and 2, the freezing fan 100 for the air-cooled refrigerator according to the present embodiment includes:
a blade assembly 10, wherein a plurality of fan-shaped blades 11 are arranged on the blade assembly 10;
a base 30, the blade assembly 10 being rotatably mounted on the base 30;
and the heating wire 20 is wound at the joint of the blade assembly 10 and the base 30 and is used for heating and unfreezing the freezing fan 100.
In the embodiment of the invention, the heating wire is arranged on the freezing fan, so that when the freezing fan 100 is arranged in the air-cooled refrigerator, the freezing fan can be heated regularly, the freezing fan is prevented from being frozen, and the risk that the freezing fan is frozen and does not rotate can be effectively solved.
In the preferred embodiment, as shown in fig. 1 and 2, the base 30 includes a circular bracket 31, a mounting portion 32 for mounting the blade assembly 10 is disposed at the center of the circular bracket 31, so as to facilitate mounting of the blade assembly 10, the blade assembly 10 is rotatably mounted on the mounting portion 32 of the base 30, and the heater wire 20 is wound around the mounting portion 32 at a position corresponding to the mounting position of the blade assembly 10, so as to facilitate heating of the heater wire and prevent the blade assembly 10 from being frozen.
In the embodiment of the invention, a hollow ventilation area 33 is arranged between the mounting part 32 and the outer edge of the circular bracket 31, so that air flow can conveniently pass through the hollow ventilation area; the side edge of the circular support 31 is provided with a mounting foot 34 for fixing the freezing fan 100 on the air-cooled refrigerator, so that the freezing fan 100 can be conveniently fixed on the air-cooled refrigerator through screws, and the mounting foot 34 is provided with a screw hole 35.
In an embodiment of the present invention, preferably, as shown in fig. 1 and 2, the blade assembly 10 of the freezing fan 100 includes:
a circular frame 12; the circular frame 12 is adopted, so that the whole freezing fan is firmer in structure;
a fan-shaped blade group 13 which is connected and arranged in the circular frame 12, wherein a plurality of fan-shaped blades 11 are arranged on the fan-shaped blade group 13; the plurality of fan-shaped blades 11 can make the wind driving stronger;
and the mounting base 14 is arranged in the middle of the fan-shaped blade group 13 of the circular frame 12. The blade assembly 10 is mounted to the base 30 via the mounting base 14.
Based on the above embodiment, the embodiment of the present invention further provides an air-cooled refrigerator, which includes: the air-cooled refrigerator provided by the embodiment of the invention is realized by adopting any one of the freezing fan heating control methods of the air-cooled refrigerator.
The embodiment of the invention provides a heating control method for a freezing fan of an air-cooled refrigerator, which comprises the following steps of:
step S100, detecting the temperature of a refrigerating chamber or a freezing chamber of the air-cooled refrigerator, and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not;
in the embodiment of the invention, the freezing fan in the embodiment of fig. 1 and 2 is installed on the air-cooled refrigerator, and when the freezing fan is used specifically, the temperature of the refrigerating chamber or the temperature of the freezing chamber of the air-cooled refrigerator can be detected in real time, and whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches the preset starting condition or not is judged.
The preset on condition is that the temperature of the refrigerating compartment is detected to reach the refrigerating compartment sensor on temperature Tr1, for example, 8 degrees, or the temperature of the freezing compartment is detected to reach the freezing compartment sensor on temperature Tf1, for example, 1 degree.
S200, when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal;
in the embodiment of the present invention, when the temperature of the refrigerating compartment or the temperature of the freezing compartment reaches the preset start-up condition, that is, when it is detected that the temperature of the refrigerating compartment reaches the refrigerating compartment sensor start-up temperature Tr1, for example, 8 degrees, or when it is detected that the temperature of the freezing compartment reaches the freezing compartment sensor start-up temperature Tf1, for example, 1 degree;
the embodiment of the present invention controls the refrigeration fan 100, which is preset with a heating wire, to start up and operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal or not, and entering step S300.
Step S300, if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach a shutdown condition, the freezing fan stops working, and a fan heating wire starts working;
in the embodiment of the invention, if the feedback signal of the freezing fan is normal, the freezing fan continues to operate, the air-cooled refrigerator performs normal refrigeration, until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working, so that the freezing fan is prevented from freezing.
In the embodiment of the present invention, the stop condition is that the temperature of the refrigerating compartment is detected to reach the refrigerating compartment sensor stop temperature Tr2, for example, 0 degrees, or the temperature of the freezing compartment is detected to reach the freezing compartment sensor stop temperature Tf2, for example, -15 degrees.
Specifically, in the embodiment of the invention, when the feedback signal of the PWM (square wave pulse signal) of the freezing fan is detected to be normal, the freezing fan continues to operate the air-cooled refrigerator for normal refrigeration, and whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches the preset shutdown condition is detected in real time; i.e., whether the temperature of the refrigerating compartment is detected to reach a refrigerating compartment sensor off temperature Tr2, for example, 0 degrees, or the temperature of the freezing compartment is detected to reach a freezing compartment sensor off temperature Tf2, for example, -15 degrees;
when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset stop condition, controlling the freezing fan to stop, stopping the freezing fan, controlling the heating wire to perform heating work, and preventing the freezing fan from freezing;
in the invention, after the freezing fan stops running, whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches the preset starting condition or not is detected again. And starting the refrigerating fan to operate to continue refrigerating when the starting condition is reached.
And S400, when the feedback signal of the refrigerating fan is detected to be abnormal, controlling the refrigerating fan to stop running, controlling a heating wire arranged on the refrigerating fan to heat for a preset time, and then controlling the refrigerating fan to start running again.
In the embodiment of the invention, when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, the heating wire arranged on the freezing fan is controlled to heat for a preset time (for example, heating is continued for 10 minutes), then the freezing fan is controlled to start running again, and if the operation of the freezing fan indicates that the freezing fan is normal, the freezing fan is controlled to refrigerate.
In the embodiment of the invention, when the heating wire is heated for 10 minutes and can not run, the heating is continued for one time to see whether the operation is normal or not; and simultaneously recording the abnormal times of the feedback signal of the refrigerating fan;
when the abnormal times of the feedback signals of the refrigerating fan are continuously detected to be more than or equal to a first preset value (for example, 3 times), alarming and prompting are carried out, and the fault of the fan is displayed.
Specifically, for example, when the PWM feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop operating, the heating wire arranged on the freezing fan is controlled to heat for a predetermined time (for example, 10 minutes) and then stop heating, and the fan is controlled to start operating again and the PWM feedback signal of the freezing fan is detected again. And if the operation of the freezing fan indicates that the freezing fan is normal, controlling the freezing fan to refrigerate.
In the embodiment of the invention, when the heating wire is heated for 10 minutes and can not run, the heating is continued for one time to see whether the operation is normal or not; and simultaneously recording the abnormal times of the feedback signal of the refrigerating fan;
when the abnormal times of the feedback signals of the refrigerating fan are continuously detected to be more than or equal to a first preset value (for example, 3 times), alarming and prompting are carried out, and the fault of the fan is displayed.
In an embodiment of the method of the present invention, the freezing fan is the freezing fan shown in the embodiment of fig. 1 and 2, and for example, the method includes: the blade assembly is provided with a plurality of fan-shaped blades; a base on which the blade assembly is rotatably mounted; the heating wire is wound on the joint of the blade assembly and the base and used for heating and unfreezing the freezing fan.
Therefore, the invention can effectively solve the risk that the freezing fan is frozen and does not rotate, and aims at solving the problem that the freezing fan in the freezing air duct of most air-cooled refrigerators in the prior art has no heating wire function and has the risk of poor refrigerating effect of the refrigerator caused by the fact that the freezing fan is frozen.
The process of the invention is explained in further detail below by means of specific application examples:
as shown in fig. 4, the heating control method for the refrigerating fan of the air-cooled refrigerator according to the embodiment of the present application includes the following steps:
s11, starting;
s12, detecting whether the temperature of the refrigerating chamber or the freezing chamber reaches the starting condition, if so, entering the step S13, otherwise, entering the step S15;
s13, starting the refrigerating fan to work, enabling a heating wire of the refrigerating fan to not work, simultaneously detecting whether a PWM (pulse-width modulation) feedback signal of the fan is normal by the refrigerator main board, enabling the PWM feedback signal to normally enter a step S14, and enabling the PWM feedback signal to enter a step S20 when the PWM signal is abnormal;
s14, detecting whether the temperature of the refrigerating chamber or the freezing chamber reaches the stop condition, if so, entering the step S15, and if not, returning to the step S13;
s15, stopping the freezing fan, enabling a heating wire of the freezing fan to work, and entering the step S16;
s16, detecting whether the temperature of the refrigerating chamber or the freezing chamber reaches the starting condition, and entering the step S30 until the shutdown is finished;
s20, stopping the fan, continuously working the heating wire for ten minutes, and recording the continuous abnormal shutdown times n; judging whether the number n of abnormal continuous shutdown times of the PWM signal is more than or equal to 3, and entering step S21 when the number n of abnormal continuous shutdown times of the PWM signal is more than or equal to 3; when the number n of abnormal continuous shutdown times of the PWM signal is less than 3, the step S16 is executed;
s21, alarming;
and S30, ending.
In the embodiment of the invention, when the refrigerating fan of the air-cooled refrigerator works, whether the refrigerating chamber or the freezing chamber reaches a starting condition or not is judged firstly, if yes, the refrigerating fan works, the fan heating wire does not work, meanwhile, the refrigerator main board detects the PWM feedback signal of the fan, if the PWM feedback signal of the fan is normal, the refrigerator normally refrigerates until the temperatures of the refrigerating chamber and the freezing chamber reach a stopping condition, the refrigerating fan stops working, and the fan heating wire starts to work. If the PWM feedback signal of the fan is abnormal, the main board controls the fan to stop working, the fan heating wire stops heating after continuously heating for t minutes, and the fan starts working and detects the PWM feedback signal again. And if the PWM feedback signal is detected to be abnormal for 3 times continuously, displaying the fan fault on the display screen of the refrigerator, and prompting a user to contact after-sale treatment.
In the embodiment of the invention, the freezing fan can be used for outputting a square wave pulse signal (PWM signal) when the freezing fan operates at a rated voltage (such as +12V), and the frequency f of the pulse signal is calculated by monitoring the port of the main board by the system. The system calculates the fan speed N as 30f in "rpm". In the process of powering on the fan, when a mainboard port signal monitored by the system for 30 seconds is always low level (pulse lower edge), the fan is locked, and when the mainboard port signal is high level (pulse upper edge), the fan is opened. And if any one of the conditions is N equal to 0, judging that the fan PWM feedback signal is abnormal, otherwise, judging that the fan PWM feedback signal is normal.
The invention has the advantages that: if the fan freezes and the PWM feedback signal is abnormal due to the fact that the fan is not started, the fan stops working, and the fan heating wire starts to heat. And after t minutes, if the ice blocks are weakened, the fan is normally started, if the ice blocks are not completely melted and the fan is not started, the fan stops working again, and the fan heating wire starts heating. And if the PWM feedback signal is detected to be abnormal repeatedly for 3 times, displaying the fan fault on the display screen of the refrigerator, and prompting a user to contact after-sale treatment.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
In summary, the invention discloses a heating control method for a freezing fan of an air-cooled refrigerator, the air-cooled refrigerator and the freezing fan; the method comprises the following steps: detecting and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not; when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal; if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working; when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, and the heating wire arranged on the freezing fan is controlled to heat for a preset time, and then the freezing fan is controlled to start running again. The invention can effectively solve the risk that the freezing fan is not rotated after being frozen, ensure the normal use of the freezing fan and prolong the service life of the freezing fan.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A heating control method for a freezing fan of an air-cooled refrigerator is characterized by comprising the following steps:
detecting the temperature of a refrigerating chamber or the temperature of a freezing chamber of the air-cooled refrigerator, and judging whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition or not;
when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset starting condition, controlling a freezing fan with a preset heating wire to start to operate; and simultaneously detecting whether the feedback signal of the refrigerating fan is normal;
if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach the stop condition, the freezing fan stops working, and the fan heating wire starts working;
when the feedback signal of the freezing fan is detected to be abnormal, the freezing fan is controlled to stop running, and the heating wire arranged on the freezing fan is controlled to heat for a preset time, and then the freezing fan is controlled to start running again.
2. The method for controlling continuous data replication based on a mobile terminal according to claim 1, wherein the step of controlling the cooling fan to stop operating and controlling the heating wire disposed on the cooling fan to heat for a predetermined time and then controlling the cooling fan to start again after detecting an abnormal feedback signal of the cooling fan further comprises:
recording the abnormal times of the feedback signal of the refrigerating fan;
when the abnormal times of the feedback signals of the freezing fan are continuously detected to be more than or equal to a first preset value, alarming is carried out to prompt and display the fan fault.
3. The method for controlling continuous data replication based on the mobile terminal according to claim 1, wherein if the feedback signal of the freezing fan is normal, the air-cooled refrigerator performs normal refrigeration until the temperatures of the refrigerating chamber and the freezing chamber reach a shutdown condition, the freezing fan stops working, and the fan heater starts working, comprising:
when the PWM feedback signal of the freezing fan is detected to be normal, the freezing fan continues to operate the air-cooled refrigerator for normal refrigeration, and whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset shutdown condition or not is detected in real time;
when the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches a preset stop condition, controlling the freezing fan to stop and controlling the heating wire to perform heating work;
and detecting whether the temperature of the refrigerating chamber or the temperature of the freezing chamber reaches the preset starting condition again.
4. The method for controlling continuous data replication based on a mobile terminal according to claim 1, wherein the step of controlling the cooling fan to stop operating and controlling a heating wire disposed on the cooling fan to heat for a predetermined time and then controlling the cooling fan to start again after detecting an abnormal feedback signal of the cooling fan comprises:
and when the PWM feedback signal of the freezing fan is detected to be abnormal, controlling the freezing fan to stop working, controlling the freezing fan to stop running, controlling a heating wire arranged on the freezing fan to heat for a preset time, stopping heating, controlling the fan to start working again, and detecting the PWM feedback signal of the freezing fan again.
5. The mobile terminal-based continuous data replication control method of claim 1, wherein the preset turn-on condition is that a temperature of a refrigerating compartment is detected to reach a refrigerating compartment sensor turn-on temperature Tr1, or a temperature of a freezing compartment is detected to reach a freezing compartment sensor turn-on temperature Tf 1;
the stop condition is that the temperature of the refrigerating compartment is detected to reach the refrigerating compartment sensor stop temperature Tr2, or the temperature of the freezing compartment is detected to reach the freezing compartment sensor stop temperature Tf 2.
6. The mobile terminal-based continuous data replication control method according to claim 2, wherein the freezing fan comprises:
the blade assembly is provided with a plurality of fan-shaped blades;
a base on which the blade assembly is rotatably mounted;
the heating wire is wound at the joint of the blade assembly and the base and is used for heating and unfreezing the freezing fan;
the heating is performed for a predetermined time of ten minutes, and the first predetermined value is 3 times.
7. A freezing fan for an air-cooled refrigerator, comprising:
the blade assembly is provided with a plurality of fan-shaped blades;
a base on which the blade assembly is rotatably mounted;
the heating wire is wound on the joint of the blade assembly and the base and used for heating and unfreezing the freezing fan.
8. The freezing fan as claimed in claim 7, wherein the base comprises a circular bracket, a mounting part for mounting the blade assembly is arranged at the center of the circular bracket, and a hollowed ventilation area is arranged between the mounting part and the outer edge of the circular bracket; the round support side is provided with and is used for fixing the freezing fan at the installation foot of forced air cooling refrigerator, be provided with the screw on the installation foot, the heater strip winding sets up the installation department.
9. The freezing fan of claim 7, wherein the vane assembly comprises:
a circular frame;
the fan-shaped blade group is connected and arranged in the circular frame, and a plurality of fan-shaped blades are arranged on the fan-shaped blade group;
and the mounting base is arranged in the middle of the circular frame fan-shaped blade group.
10. An air-cooled refrigerator, characterized in that the air-cooled refrigerator comprises the freezing fan of any one of claims 7 to 9 and is realized by adopting the heating control method of the freezing fan of the air-cooled refrigerator of any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110316754.8A CN113218128A (en) | 2021-03-22 | 2021-03-22 | Freezing fan heating control method of air-cooled refrigerator, air-cooled refrigerator and freezing fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110316754.8A CN113218128A (en) | 2021-03-22 | 2021-03-22 | Freezing fan heating control method of air-cooled refrigerator, air-cooled refrigerator and freezing fan |
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Application publication date: 20210806 |