CN113915902B - Refrigerator and refrigerator noise reduction method - Google Patents
Refrigerator and refrigerator noise reduction method Download PDFInfo
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- CN113915902B CN113915902B CN202110709466.9A CN202110709466A CN113915902B CN 113915902 B CN113915902 B CN 113915902B CN 202110709466 A CN202110709466 A CN 202110709466A CN 113915902 B CN113915902 B CN 113915902B
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/30—Insulation with respect to sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a refrigerator, comprising: a cabinet serving as a support structure of the refrigerator, having a heat-insulating function, and providing an assembly space for various components of the refrigerator; the refrigerating system provides a refrigerating function for the refrigerator and comprises a freezing fan and a refrigerating fan; the controller is configured to: acquiring a defrosting type of the refrigerator in response to a defrosting operation of the refrigerator; when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle; judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not; if so, controlling the refrigeration fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode. The invention also discloses a refrigerator noise reduction method. By adopting the embodiment of the invention, the dynamic rotation speed adjustment of the fan can be realized, the low noise level of the fan in the refrigerating blowing defrosting process is ensured, and the defrosting is completed as required.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a refrigerator noise reduction method.
Background
With the rapid development of user requirements and markets, the sales proportion of large-volume high-end refrigerators is more and more. The existing large-volume multi-system refrigerators such as four cross doors, multiple French doors and other series have various operation modes and have clear compartment classification, so that the existing large-volume multi-system refrigerators generally have a complex refrigeration cycle system, wherein a plurality of fans which run at high speed are designed, such as a refrigeration fan, a freezing fan, a temperature-changing fan and the like. In the daily use process, when the refrigerator runs in a normal mode or a quick-freezing mode, the noise of the compressor is relatively large, the subjective perception of a user is obvious, and after the noise of the running of the fan is shielded by the noise of the compressor, the direct feeling of the user is not easy to cause. However, when the refrigerator enters a shutdown defrosting stage, the compressor stops operating, and at this time, the flow noise of the refrigeration system pipeline, the condensed water vaporization noise of the fin evaporator, and the noise of the air blowing defrosting operation of the refrigeration fan become key factors affecting the sound quality experience of the user, and easily cause noise complaints of the user on products.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator and a refrigerator noise reduction method, which can realize dynamic rotation speed adjustment of a fan, ensure that the noise level of the fan is lower in a refrigerating blowing defrosting process and defrosting is finished as required.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
a cabinet serving as a support structure of the refrigerator, having a heat-insulating function, and providing an assembly space for various components of the refrigerator;
the refrigerating system provides a refrigerating function for the refrigerator and comprises a freezing fan and a refrigerating fan;
the controller is configured to:
responding to a defrosting operation of the refrigerator, and acquiring a defrosting type of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
As a modification of the above, the first mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
As an improvement of the above, the second muting control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigeration fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed.
As an improvement of the above, the controller is further configured to:
when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
As a modification of the above, the third muting control mode includes:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
The embodiment of the invention also provides a refrigerator noise reduction method, which comprises the following steps:
acquiring a defrosting type of the refrigerator in response to a defrosting operation of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigerating fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
As a modification of the above, the first mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
As a modification of the above, the second muting control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed.
As an improvement of the above, the method further comprises:
when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
As a modification of the above, the third muting control mode includes:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
Compared with the prior art, the refrigerator and the noise reduction method of the refrigerator disclosed by the embodiment of the invention begin with the practical problem of noise improvement, the noise source in the defrosting process of the refrigerator during shutdown is analyzed, and the refrigerating fan runs at a constant high rotating speed in the defrosting process, so that the generated noise is high, and the rotating speed of the refrigerating fan is mainly controlled in the embodiment of the invention. The number of times of opening the door of the compartment and the time of opening the door are increased, the defrosting quantity is judged according to the requirement, the rotating speed of the refrigeration fan in the defrosting process is reasonably and dynamically adjusted, different mute control modes are designed and developed, and the running noise of the fan is reduced. In addition, according to the embodiment of the invention, a mute control method for defrosting on demand and dynamically adjusting the rotating speed in a segmented manner is provided by analyzing the noise generated by the running of the refrigerating fan under different defrosting working conditions, so that the problem of product noise is solved.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is a flowchart of defrosting operation of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a flow chart of a first mute control mode provided by an embodiment of the present invention;
FIG. 4 is a flow chart of a second mute control mode provided by an embodiment of the present invention;
FIG. 5 is a flow chart of a third mute control mode provided by an embodiment of the present invention;
fig. 6 is a flowchart of a refrigerator noise reduction method according to an embodiment of 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention, where the refrigerator includes:
a cabinet 10 serving as a support structure of the refrigerator, having a heat-insulating function, and providing an assembly space for various components of the refrigerator;
the refrigerating system 20 provides a refrigerating function for the refrigerator and comprises a freezing fan and a refrigerating fan;
the controller 30 is configured to:
acquiring a defrosting type of the refrigerator in response to a defrosting operation of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
Further, when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
Specifically, in the embodiment of the invention, the mute and noise reduction control design of the refrigerating fan is developed according to different running conditions of the refrigerator after the refrigerator enters the defrosting mode. As shown in fig. 2 below, firstly, the defrosting type of the refrigerator is determined by a program, and the refrigerator is divided into a freezing and refrigerating dual defrosting mode and a refrigerating defrosting mode, wherein the freezing and refrigerating dual defrosting mode indicates that freezing and heating defrosting are performed and refrigerating synchronous blowing defrosting is performed, and the refrigerating defrosting mode performs blowing defrosting only by refrigerating. When the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, the door opening times and the door opening time of the total refrigerating chamber in one service cycle of the refrigerator are judged through the added chamber door opening times and door opening time acquisition and recording module. For example, the use period is 24h.
For example, the defrosting condition may be: the door opening times are larger than or equal to a preset door opening time threshold, and the accumulated door opening time is larger than or equal to a preset door opening time threshold. For example, the threshold of the door opening times is 8, and the accumulated door opening time is 16min. When the door opening times N are less than 8 and the accumulated door opening time t is less than 16min, judging that the frosting amount of the refrigeration evaporator is relatively less, and entering a first mute control mode; and when the door opening times N are more than or equal to 8 times and the accumulated door opening time t is more than or equal to 16min, the frosting amount of the refrigeration evaporator caused by door opening is large, entering a second mute control mode, and carrying out dynamic rotation speed adjustment on the fan. And if the defrosting type of the refrigerator is a refrigerating defrosting mode, directly entering a third mute control mode, and continuing to perform the next targeted judgment and control.
Specifically, the first mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
For example, referring to fig. 3, after the refrigerator enters the defrosting mode, the freezing and refrigerating are performed synchronously for defrosting, but because the door opening times of the refrigerating chamber are less and the door opening time is short, and the frosting amount of the refrigerating evaporator is less in the whole operation period, the fan can be controlled to operate at a relatively low rotating speed, and the noise level is reduced. The first defrosting time threshold is 5min, and the second defrosting time threshold is 20min.
The defrosting operation time T during the defrosting process is analyzed through the acquisition and recording module, when the defrosting starts synchronously until the time T is less than or equal to 5min, because the temperature of a heating wire of the freezing evaporator can gradually rise, the temperature is transferred to the evaporator and a certain time is needed for defrosting, and the unstable defrosting noise can not occur in a freezing chamber according to the experimental noise test, the refrigerating fan can be controlled to operate at the middle rotating speed R2 at the stage, and the superposition of the refrigerating defrosting noise and the refrigerating fan operating noise can be effectively avoided. When the defrosting process enters a time period of T being more than 5min and less than or equal to 20min, heating defrosting noise of the freezing evaporator begins to appear and is represented as continuous unsteady fluctuation noise, and the refrigerating fan is controlled to stop running at the moment, so that the noise problem caused by the simultaneous occurrence of fan noise and defrosting noise is prevented. When the defrosting process is developed to a time period T > 20min, the defrosting of the freezing chamber is basically completed completely, the noise of the frozen defrosting disappears, and the refrigerating fan is controlled to recover to work and operate at a low rotating speed R1. Along with the whole defrosting process of cold storage and freezing and the refrigerator stopping refrigeration, the air temperature in the cold storage chamber is gradually increased, and the cold storage fan works at a lower rotating speed R1 in the last stage to finish blowing defrosting.
Specifically, the second mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigeration fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed.
For example, referring to fig. 4, after entering the defrosting mode, because the door opening times of the refrigerating compartment are more and the door opening time is longer in the operation cycle of the refrigerator, the frost formation amount of the refrigerating evaporator is more due to the moisture in the air entering the compartment, and the fan is required to operate at a relatively higher rotation speed, but dynamic control adjustment is performed.
The defrosting operation time T in the defrosting process is judged through the acquisition and recording module, and when defrosting starts synchronously until the time T is less than or equal to 5min, the refrigerating fan is controlled to operate at a high rotating speed R3, so that the refrigerating evaporator is ensured to enter the defrosting process, and meanwhile, the superposition of freezing defrosting noise can be avoided. When the defrosting process is carried out in a time period of T being more than 5min and less than or equal to 20min, heating defrosting noise of the freezing evaporator begins to appear and is represented as continuous unsteady fluctuation noise, and the refrigerating fan is controlled to operate at a low rotating speed R1; even guarantee that the fan noise and change under this condition of frost noise emergence simultaneously, the fan noise also can not produce obvious influence to user's sound quality experience to can continue to maintain the development of cold-stored frost process. When the defrosting process is developed to a time period T being more than 20min, the defrosting of the freezing chamber is basically and completely finished, the noise of the frozen defrosting disappears, the refrigerating fan is controlled to stably rise to the middle rotating speed R2 for operation, and finally the refrigerator is normally started until the defrosting is finished, the defrosting recovery period is started, the fan operates at a high speed according to the original control mode, and the mute control mode is exited.
Specifically, the third mute control mode includes:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
For example, referring to fig. 5, after entering the refrigeration single blowing defrosting mode, the original control mode controls the fan to operate at a constant rotation speed, and a balanced matching design of low noise and large frosting amount of the fan at different rotation speeds is not considered, which causes large defrosting noise and high fan energy consumption. Therefore, the total door opening times and door opening time of the refrigerating chamber within 24 hours of the refrigerator are judged by adopting the increased acquisition and recording module for the door opening times and the door opening time of the chamber; when the door opening times N are less than 8 and the door opening time t is less than 16min, and the frosting amount of the refrigeration evaporator is relatively small, the fan operates at a low rotating speed R1; when the door opening times N are more than or equal to 8 times and the door opening time t is more than or equal to 16min, the frost formation amount of the refrigeration evaporator caused by door opening is large, the fan is controlled to operate at the middle rotating speed R2, the dynamic rotating speed adjustment of the fan is realized, the low noise level of the fan in the refrigeration blowing defrosting process is ensured, and defrosting is completed as required.
Compared with the prior art, the refrigerator disclosed by the embodiment of the invention starts from the actual problem of noise improvement, analyzes the noise source in the defrosting process of the refrigerator when the refrigerator is stopped, and mainly controls the rotating speed of the refrigerating fan in the embodiment of the invention because the refrigerating fan runs at a constant high rotating speed in the defrosting process and the generated noise is high. Through increasing the collection to the number of times of opening the door and the time of opening the door of room, the reflection judges the amount of frosting and how much changes the frost as required, and the reasonable dynamic adjustment changes the cold-stored fan rotational speed of white in-process, and the design develops different silence control mode, reduces fan running noise. In addition, according to the embodiment of the invention, a mute control method for defrosting on demand and dynamically adjusting the rotating speed in a segmented manner is provided by analyzing the noise generated by the running of the refrigerating fan under different defrosting working conditions, so that the problem of product noise is solved.
Referring to fig. 6, fig. 6 is a flowchart of a refrigerator noise reduction method according to an embodiment of the present invention, where the refrigerator noise reduction method includes:
s1, responding to a defrosting operation of a refrigerator, and acquiring a defrosting type of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
s2, when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
s3, judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
s4, if yes, controlling the refrigeration fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
Further, the method further comprises step S5:
s5, when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
Specifically, in the embodiment of the invention, the mute and noise reduction control design of the refrigerating fan is developed according to different running conditions of the refrigerator after the refrigerator enters the defrosting mode. The defrosting type of the refrigerator is judged through a program and is divided into a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode, wherein the freezing and refrigerating double defrosting mode represents freezing heating defrosting and refrigerating synchronous blowing defrosting, and the refrigerating defrosting mode only carries out blowing defrosting by refrigerating independently. When the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, the total refrigerating chamber door opening times and door opening time of the refrigerator in one service cycle are judged through the increased chamber door opening times and door opening time acquisition and recording module. For example, the use period is 24h.
For example, the defrosting condition may be: the door opening times are larger than or equal to a preset door opening time threshold, and the accumulated door opening time is larger than or equal to a preset door opening time threshold. For example, the threshold of the door opening times is 8, and the accumulated door opening time is 16min. When the door opening times N are less than 8 and the accumulated door opening time t is less than 16min, judging that the frosting amount of the refrigeration evaporator is relatively less, and entering a first mute control mode; and when the door opening times N are more than or equal to 8 times and the accumulated door opening time t is more than or equal to 16min, the frosting amount of the refrigeration evaporator caused by door opening is large, entering a second mute control mode, and carrying out dynamic rotation speed adjustment on the fan. And if the defrosting type of the refrigerator is a refrigerating defrosting mode, directly entering a third mute control mode, and continuing to perform the next targeted judgment and control.
Specifically, the first mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
In an exemplary embodiment, after the refrigerator enters the defrosting mode, the freezing and refrigerating are performed simultaneously for defrosting, but because the door opening times of the refrigerating chamber are small and the door opening time is short, and the frosting amount of the refrigerating evaporator is small in the whole operation period, the fan can be controlled to operate at a relatively low rotating speed, and the noise level is reduced. The first defrosting time threshold is 5min, and the second defrosting time threshold is 20min.
The defrosting operation time T during the defrosting process is analyzed through the acquisition and recording module, when the defrosting starts synchronously until the time T is less than or equal to 5min, because the temperature of a heating wire of the freezing evaporator can gradually rise, the temperature is transferred to the evaporator and a certain time is needed for defrosting, and the unstable defrosting noise can not occur in a freezing chamber according to the experimental noise test, the refrigerating fan can be controlled to operate at the middle rotating speed R2 at the stage, and the superposition of the refrigerating defrosting noise and the refrigerating fan operating noise can be effectively avoided. When the defrosting process enters a time period of T being more than 5min and less than or equal to 20min, heating defrosting noise of the freezing evaporator begins to appear and is represented as continuous unsteady fluctuation noise, and at the moment, the refrigerating fan is controlled to stop running, so that the noise problem caused by the simultaneous occurrence of the fan noise and the defrosting noise is prevented. When the defrosting process is developed to a time period T > 20min, the defrosting of the freezing chamber is basically finished completely, the noise of the frozen defrosting disappears, and the refrigerating fan is controlled to recover to work and operate at a low rotating speed R1. Along with the whole defrosting process of cold storage and freezing and the refrigerator stopping refrigeration, the air temperature in the cold storage chamber is gradually increased, and the cold storage fan works at a lower rotating speed R1 in the last stage to finish blowing defrosting.
Specifically, the second mute control mode includes:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset middle rotating speed.
For example, after entering the defrosting mode, because the number of times of opening the door of the refrigerating chamber is large and the door opening time is long in the operation cycle of the refrigerator, the frost formation amount of the refrigerating evaporator is large because water vapor in the air enters the chamber, and the fan is required to operate at a relatively high rotation speed, but dynamic control adjustment is performed.
The defrosting operation time T in the defrosting process is judged through the acquisition and recording module, and when defrosting starts synchronously until the time T is less than or equal to 5min, the refrigerating fan is controlled to operate at a high rotating speed R3, so that the refrigerating evaporator is ensured to enter the defrosting process, and meanwhile, the superposition of freezing defrosting noise can be avoided. When the defrosting process enters a time period of T being more than 5min and less than or equal to 20min, heating defrosting noise of the freezing evaporator begins to appear and is represented as continuous unsteady state fluctuation noise, and at the moment, the refrigerating fan is controlled to operate at a low rotating speed R1; even if the fan noise and the defrosting noise appear simultaneously, the fan noise can not obviously affect the sound quality experience of a user, and the development of a refrigerating and defrosting process can be continuously maintained. When the defrosting process is developed to a time period T being more than 20min, the defrosting of the freezing chamber is basically and completely finished, the noise of the frozen defrosting disappears, the refrigerating fan is controlled to stably rise to the middle rotating speed R2 for operation, and finally the refrigerator is normally started until the defrosting is finished, the defrosting recovery period is started, the fan operates at a high speed according to the original control mode, and the mute control mode is exited.
Specifically, the third mute control mode includes:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
For a specific control process of the refrigerator noise reduction method, reference may be made to the control process of the controller in the refrigerator described in the above embodiment, and details of the present invention are not repeated herein.
Illustratively, after entering a refrigeration single-blowing defrosting mode, the original control mode controls the fan to operate at a constant rotating speed, and the balance matching design of low noise and high frosting amount of the fan at different rotating speeds is not considered, so that the defrosting noise is larger and the energy consumption of the fan is higher. Therefore, the total opening times and opening time of the cold storage chamber in 24 hours of the refrigerator are judged by adopting the increased acquisition and recording module for the opening times and the opening time of the chamber; when the door opening times N are less than 8 and the door opening time t is less than 16min, the frosting amount of the refrigeration evaporator is relatively small, and the fan runs at a low rotating speed R1; when the door opening times N are more than or equal to 8 times and the door opening time t is more than or equal to 16min, the frost formation amount of the refrigeration evaporator caused by door opening is large, the fan is controlled to operate at the middle rotating speed R2, the dynamic rotating speed adjustment of the fan is realized, the low noise level of the fan in the refrigeration blowing defrosting process is ensured, and defrosting is completed as required.
Compared with the prior art, the refrigerator noise reduction method disclosed by the embodiment of the invention starts from the actual problem of noise improvement, analyzes the noise source in the defrosting process of the refrigerator in a shutdown state, and mainly controls the rotating speed of the refrigerating fan in the embodiment of the invention because the refrigerating fan runs at a constant high rotating speed in the defrosting process and the generated noise is high. Through increasing the collection to the number of times of opening the door and the time of opening the door of room, the reflection judges the amount of frosting and how much changes the frost as required, and the reasonable dynamic adjustment changes the cold-stored fan rotational speed of white in-process, and the design develops different silence control mode, reduces fan running noise. In addition, the embodiment of the invention provides a targeted mute control method for defrosting as required and dynamically adjusting the rotating speed in a segmented manner by analyzing the noise condition generated by the running of the refrigerating fan under different defrosting working conditions, so that the problem of product noise is solved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A refrigerator, characterized by comprising:
a cabinet serving as a support structure of the refrigerator, having a heat-insulating function, and providing an assembly space for various components of the refrigerator;
the refrigerating system provides a refrigerating function for the refrigerator and comprises a freezing fan and a refrigerating fan;
the controller is configured to:
acquiring a defrosting type of the refrigerator in response to a defrosting operation of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigerating fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
2. The refrigerator of claim 1, wherein the first mute control mode comprises:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigerating fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
3. The refrigerator of claim 1, wherein the second mute control mode comprises:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigeration fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed.
4. The refrigerator of claim 1, wherein the controller is further configured to:
when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
5. The refrigerator as claimed in claim 4, wherein the third mute control mode comprises:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
6. A refrigerator noise reduction method is characterized by comprising the following steps:
acquiring a defrosting type of the refrigerator in response to a defrosting operation of the refrigerator; wherein the defrosting types comprise a freezing and refrigerating double defrosting mode and a refrigerating defrosting mode;
when the defrosting type of the refrigerator is a freezing and refrigerating double defrosting mode, acquiring the door opening times and accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to execute a second mute control mode; if not, controlling the refrigeration fan to execute a first mute control mode; the first mute control mode and the second mute control mode are used for controlling the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
7. The method of reducing noise in a refrigerator of claim 6, wherein the first mute control mode comprises:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigeration fan to operate at a preset middle rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to stop operating;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed.
8. The method of reducing noise in a refrigerator of claim 6, wherein the second mute control mode comprises:
acquiring defrosting operation time after entering a defrosting mode;
when the defrosting operation time is less than or equal to a preset first defrosting time threshold, controlling the refrigerating fan to operate at a preset high rotating speed;
when the defrosting operation time is greater than the first defrosting time threshold and is less than or equal to a preset second defrosting time threshold, controlling the refrigerating fan to operate at a preset low rotating speed;
and when the defrosting operation time is greater than the second defrosting time threshold, controlling the refrigerating fan to operate at a preset middle rotating speed.
9. The method of reducing noise in a refrigerator of claim 6, further comprising:
when the defrosting type of the refrigerator is a refrigerating defrosting mode, controlling the refrigerating fan to execute a third mute control mode; and the third mute control mode is to control the rotating speed of the refrigerating fan according to the defrosting operation time of the refrigerator.
10. The method of reducing noise in a refrigerator of claim 9, wherein the third mute control mode comprises:
acquiring the door opening times and the accumulated door opening time of the refrigerator in a preset service cycle;
judging whether the door opening times and the accumulated door opening time meet preset defrosting conditions or not;
if so, controlling the refrigeration fan to operate at a preset middle rotating speed; and if not, controlling the refrigeration fan to operate at a preset low rotating speed.
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| CN114777378B (en) * | 2022-04-02 | 2024-04-30 | 海信冰箱有限公司 | Refrigerator and control method thereof |
| CN114777371B (en) * | 2022-04-08 | 2024-05-07 | 海信冰箱有限公司 | Refrigerator and noise reduction method thereof |
| CN114992951A (en) * | 2022-05-25 | 2022-09-02 | 海信（山东）冰箱有限公司 | Refrigerator and mute control method thereof |
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