CN115355639A - Refrigerator and vibration adjusting method of compressor - Google Patents
Refrigerator and vibration adjusting method of compressor Download PDFInfo
- Publication number
- CN115355639A CN115355639A CN202210960517.XA CN202210960517A CN115355639A CN 115355639 A CN115355639 A CN 115355639A CN 202210960517 A CN202210960517 A CN 202210960517A CN 115355639 A CN115355639 A CN 115355639A
- Authority
- CN
- China
- Prior art keywords
- rigidity
- compressor
- adjusting
- signal
- stiffness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/13—Vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a refrigerator and a vibration adjusting method of a compressor. The refrigerator comprises a compressor and a compressor pipeline connected with the compressor, and is further provided with a vibration adjusting system comprising a mass unit and a rigidity adjustable unit, wherein the mass unit and the rigidity adjustable unit are stacked and fixedly connected to at least one side of the compressor pipeline. After the refrigerator is powered on, the current working state of the compressor is obtained, the vibration frequency of a compressor pipeline and/or the displacement of the mass unit are obtained in real time, and then the rigidity of the rigidity adjustable unit is adjusted according to the current working state of the compressor and the change of the vibration frequency and/or the displacement, so that the natural frequency of the vibration adjusting system is equal to or close to the vibration frequency. By adopting the invention, the natural frequency can be adaptively adjusted according to the working state of the compressor, the vibration energy of the compressor pipeline is absorbed, and the vibration and noise of the compressor under different working states are effectively reduced.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a vibration adjusting method of a compressor.
Background
With the continuous pursuit of people for high-quality life, the refrigerator with low noise and stable operation becomes the most basic requirement of users for the refrigerator, and is a basic factor for measuring the quality of the refrigerator. The vibration noise generated in the operation process of the refrigerator greatly influences the experience of a user on the refrigerator.
The main source of vibration noise in refrigerators is the compressor, and the suction and discharge pipes of the compressor are the main path for vibration transmission. As shown in fig. 1, fig. 1 is a schematic view of a compressor and a pipeline structure thereof of a refrigerator in the prior art, one end of a suction pipe and an exhaust pipe of the compressor is fixed on the compressor, the other end of the suction pipe and the exhaust pipe extend into a foaming layer of a box body, and the middle pipeline is approximately in a suspended state. The vibration of the pipeline mainly comes from two aspects, namely that the vibration of the compressor is directly transmitted to the pipeline on the one hand, and the vibration of the pipeline is generated by the pulsation of the refrigerant in the pipeline on the other hand. In the operation process of the reciprocating compressor, a crank which rotates generates rotating inertia force, a piston which reciprocates generates reciprocating inertia force, a connecting rod between the crank and the piston generates the rotating inertia force and the reciprocating inertia force at the same time, the periodic changing inertia force prompts the compressor to vibrate, and the exhaust process of the compressor to an exhaust pipe is intermittent, so that the pressure in a pipeline is suddenly high and suddenly low, the air flow speed is suddenly high and suddenly low, the air pressure in the pipeline is suddenly high and suddenly low, the gas flow speed is suddenly high and suddenly low to cause pressure pulsation, the pressure pulsation can generate pulsating exciting force on a pipeline, the pipeline is excited to vibrate mechanically, the refrigerant pressure pulsation and the compressor vibration can cause the pipeline to vibrate greatly, meanwhile, the pipeline vibration is transmitted to a box body to cause the box body to vibrate, obvious humming noise is generated, and the user experience is reduced.
In the prior art, a vibration reduction mode for a compressor pipeline generally adopts a rubber block to buffer the compressor pipeline so as to reduce vibration energy. However, the inventors found that the prior art has at least the following problems: for the variable frequency compressor, the rotating speed of the compressor can be changed along with different operating environments and operating requirements, and the rubber block can only attenuate vibration under specific frequency and cannot reduce vibration energy of all frequency bands, so that better vibration and noise reduction effects are difficult to achieve.
Disclosure of Invention
The invention aims to provide a refrigerator and a vibration adjusting method of a compressor, which can adaptively adjust natural frequency according to the working state of the compressor, absorb vibration energy of a compressor pipeline and effectively reduce vibration and noise of the compressor in different working states.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
the compressor is connected with a compressor pipeline;
the vibration adjusting system comprises a mass unit and a rigidity adjustable unit; the mass unit and the rigidity adjustable unit are arranged in a stacked mode and fixedly connected to at least one side of the compressor pipeline;
the vibration sensor is used for detecting the vibration frequency of the compressor pipeline;
a displacement sensor for detecting a displacement of the mass unit;
a controller to:
after the refrigerator is powered on, acquiring the current working state of the compressor;
acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
and adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
As an improvement of the above scheme, the adjusting the stiffness of the stiffness adjustable unit according to the current operating state of the compressor and the change of the vibration frequency and/or the displacement specifically includes:
sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
after a preset rigidity adjusting signal is sent to the rigidity adjustable unit, the rigidity adjusting signal is adjusted according to the vibration frequency and/or the change of the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjusting signal unchanged, changing the adjusting signal or stopping sending the stiffness adjusting signal.
As an improvement of the above solution, the operating state of the compressor includes: the compressor is in the stage of just starting operation, the compressor is in the stage of just stopping operation, the compressor is in the stage of adjusting the running rotating speed, and the compressor is in the stage of opening the door of the refrigerator.
As an improvement of the above scheme, the sending a preset stiffness adjustment signal to the stiffness adjustable unit according to the current working state of the compressor specifically includes:
if the compressor is currently in a just-started operation stage, sending a rigidity increasing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is greater than the vibration frequency at the last moment, continuing to send the rigidity increasing signal to the rigidity adjustable unit;
if the vibration frequency at the current moment is smaller than the vibration frequency at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
As an improvement of the above scheme, the sending a preset stiffness adjustment signal to the stiffness adjustable unit according to the current working state of the compressor specifically includes:
if the compressor is currently in a just-stopped operation stage, sending a rigidity reducing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, continuously sending the rigidity reducing signal to the rigidity adjustable unit;
if the vibration frequency at the current moment is greater than the vibration frequency at the previous moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
As an improvement of the above scheme, the sending a preset stiffness adjustment signal to the stiffness adjustable unit according to the current working state of the compressor specifically includes:
if the compressor is currently in the operation rotating speed adjusting stage, sending a rigidity increasing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than the displacement at the previous moment, continuously sending the rigidity increasing signal to the rigidity adjustable unit;
if the displacement at the current moment is smaller than the displacement at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
As an improvement of the above scheme, the sending a preset stiffness adjustment signal to the stiffness adjustable unit according to the current working state of the compressor specifically includes:
if the compressor is currently in the stage of opening the door of the refrigerator, sending a rigidity reducing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than the displacement at the previous moment, the rigidity reducing signal is continuously sent to the rigidity adjustable unit;
if the displacement at the current moment is smaller than the displacement at the previous moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
The embodiment of the invention also provides a vibration adjusting method of the compressor, which is applied to a refrigerator, wherein the refrigerator comprises the following steps:
the compressor is connected with a compressor pipeline;
the vibration adjusting system comprises a mass unit and a rigidity adjustable unit; the mass unit and the rigidity adjustable unit are arranged in a stacked mode and fixedly connected to at least one side of the compressor pipeline;
the vibration sensor is used for detecting the vibration frequency of the compressor pipeline;
a displacement sensor for detecting a displacement of the mass unit;
the method comprises the following steps:
after the refrigerator is powered on, acquiring the current working state of the compressor;
acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
and adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
As an improvement of the above scheme, the adjusting the stiffness of the stiffness adjustable unit according to the current operating state of the compressor and the change of the vibration frequency and/or the displacement specifically includes:
sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
after sending a preset stiffness adjusting signal to the stiffness adjustable unit, adjusting the stiffness adjusting signal according to the change of the vibration frequency and/or the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjustment signal unchanged, changing the adjustment signal or stopping sending the stiffness adjustment signal.
As an improvement of the above solution, the operating state of the compressor includes: the compressor is in the stage of just starting operation, the compressor is in the stage of just stopping operation, the compressor is in the stage of adjusting the running rotating speed, and the compressor is in the stage of opening the door of the refrigerator.
Compared with the prior art, the embodiment of the invention discloses a vibration adjusting method for a refrigerator and a compressor. The refrigerator is provided with a vibration adjusting system comprising a mass unit and a rigidity adjustable unit, wherein the mass unit and the rigidity adjustable unit are stacked and fixedly connected to at least one side of the compressor pipeline. After the refrigerator is powered on, the current working state of the compressor is obtained, the vibration frequency of a compressor pipeline and/or the displacement of the mass unit are obtained in real time, and then the rigidity of the rigidity adjustable unit is adjusted according to the current working state of the compressor and the change of the vibration frequency and/or the displacement, so that the natural frequency of the vibration adjusting system is equal to or close to the vibration frequency. By adopting the technical means of the embodiment of the invention, the vibration adjusting system is arranged on the compressor pipeline, and the rigidity of the rigidity adjustable unit in the vibration adjusting system is controlled to generate a certain natural frequency, so that the vibration adjusting system resonates with the compressor pipeline to absorb the vibration energy of the compressor pipeline, and further the vibration and noise of the compressor in different working states are effectively reduced.
Drawings
Fig. 1 is a schematic view of a compressor of a refrigerator and a piping structure thereof in the related art;
fig. 2 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic view of the connection of the compressor to the vibration adjustment system in an embodiment of the present invention;
fig. 4 is a schematic flowchart of operations performed by the controller in the embodiment of the present invention in the first preferred implementation;
FIG. 5 is a flow chart illustrating operations performed by the controller in accordance with a second preferred embodiment of the present invention;
FIG. 6 is a flow chart illustrating the operation of the controller during the startup phase of the compressor according to the embodiment of the present invention;
FIG. 7 is a schematic flow chart of the operation performed by the controller during the stop phase of the compressor in accordance with the exemplary embodiment of the present invention;
FIG. 8 is a flow chart illustrating the operation of the controller during the rotational speed adjustment phase of the compressor according to the embodiment of the present invention;
FIG. 9 is a schematic flow chart of the operation performed by the controller during the opening stage of the refrigerator according to the embodiment of the present invention;
fig. 10 is a schematic flow chart illustrating a vibration adjustment method for a compressor 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a schematic structural diagram of a refrigerator according to an embodiment of the present invention is shown. The embodiment of the invention provides a refrigerator 10, which comprises a box body and a box door, wherein at least one storage chamber, such as a refrigerating chamber and/or a freezing chamber, is arranged in the box body and is used for storing articles with fresh-keeping or freezing requirements.
The refrigerator 10 further includes a refrigerating system for performing a refrigerating operation of the refrigerator. It should be noted that the refrigerator performs a cooling operation by the cooling system to provide cooling energy to the storage compartment, so that the storage compartment is maintained in a constant low temperature state. Specifically, the refrigeration system of the refrigerator according to the embodiment of the present invention includes a compressor 11, a condenser, a dry filter, a capillary tube, and an evaporator, and the operation of the refrigeration system includes a compression process, a condensation process, a throttling process, and an evaporation process. The compressor 11 is connected to other components via a compressor line 12 and performs corresponding functions, wherein the compressor line 12 comprises a discharge line and a return line.
Specifically, the compression process is: the power cord of the refrigerator is plugged, the compressor starts to work under the condition that the box body has a refrigeration requirement, a low-temperature and low-pressure refrigerant is sucked by the compressor, and is compressed into high-temperature and high-pressure superheated gas in a cylinder of the compressor and then is discharged into the condenser; the condensation process is as follows: the high-temperature and high-pressure refrigerant gas is radiated by the condenser, the temperature is continuously reduced, the refrigerant gas is gradually cooled to be normal-temperature and high-pressure saturated vapor and further cooled to be saturated liquid, the temperature is not reduced any more, and the temperature at the moment is called as condensation temperature. The pressure of the refrigerant in the whole condensation process is almost unchanged; the throttling process is as follows: the condensed refrigerant saturated liquid flows into a capillary tube after being filtered by a drying filter to remove moisture and impurities, throttling and pressure reduction are carried out through the capillary tube, and the refrigerant is changed into normal-temperature low-pressure wet vapor; the evaporation process is as follows: the subsequent vaporization begins by absorbing heat in the evaporator, not only reducing the temperature of the evaporator and its surroundings, but also turning the refrigerant into a low temperature, low pressure gas. The refrigerant from the evaporator returns to the compressor again, and the above processes are repeated to transfer the heat in the refrigerator to the air outside the refrigerator, thereby achieving the purpose of refrigeration.
Further, the refrigerator 10 further includes a vibration adjusting system 13 for adjusting the vibration of the compressor system to reduce the vibration noise of the compressor pipeline. The vibration adjusting system 13 includes a mass unit 131 and a stiffness adjustable unit 132. The mass unit 131 is a mass block, the mass of the mass unit is preset and fixed, and can be specifically set according to actual conditions, and the stiffness adjustable unit 132 is made of a piezoelectric material with variable stiffness. The mass unit 131 and the stiffness adjustable unit 132 are stacked and fixedly connected to at least one side of the compressor pipeline 12.
In a preferred embodiment, referring to fig. 3, a schematic diagram of a connection structure between a compressor and a vibration adjusting system in an embodiment of the present invention is shown. A set of mass unit 131 and a set of stiffness adjustable unit 132 are disposed on each side of the compressor conduit 12. In the setting process, the stiffness adjustable unit 132 is firstly arranged on one side surface of the compressor pipeline 12, the mass unit 131 is arranged on one side surface of the stiffness adjustable unit 132, which is far away from the compressor pipeline 12, and the mass unit 131 and the stiffness adjustable unit 132 are fixedly connected to the surface of the compressor pipeline through a fixing mechanism. The compressor pipeline 12 may be an exhaust pipe or a return pipe, and of course, the vibration adjusting system 13 may also be disposed on the exhaust pipe and the return pipe, respectively.
The refrigerator 10 further comprises a vibration sensor 14 and a displacement sensor 15, wherein the vibration sensor 14 is connected with the compressor pipeline 12, for example, is arranged on the surface of the compressor pipeline 12, and is used for detecting the vibration frequency of the compressor pipeline 12; the displacement sensor 15 is connected to the mass unit 131, for example, is disposed on a surface of the mass unit 131, and detects a displacement of the mass unit 131. For example, taking the position of the mass unit 131 when the compressor pipeline 12 is in a static state as an initial point, when the compressor pipeline 12 vibrates during the operation of the refrigerator, and the mass unit 131 is driven to move, the displacement sensor 15 can detect the displacement of the mass unit 131 relative to the initial point.
The refrigerator 10 further includes a controller 16, and the controller 16 is respectively connected to the vibration adjusting system 13, the vibration sensor 14 and the displacement sensor 15, and performs information interaction, so as to obtain the vibration frequency of the compressor pipeline 12 detected by the vibration sensor 14 and the displacement of the mass unit 131 detected by the displacement sensor 15, and control the vibration adjusting system 13.
Specifically, referring to fig. 4, a structural schematic diagram of a refrigerator according to an embodiment of the present invention is shown, where a door body is in an open state. The controller 16 is configured to execute steps S11 to S13:
s11, after the refrigerator is powered on, acquiring the current working state of the compressor;
s12, acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
s13, adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
The working principle of the vibration adjusting system 13 is as follows: the mass unit 131 and the stiffness adjustable unit 132 form a vibration adjusting system with adjustable natural frequency, and the natural frequency f = K/m of the system, where K denotes the stiffness of the stiffness adjustable unit 132, and m denotes the mass of the mass unit 131. The natural frequency of the system is adjusted through the variable stiffness K, and when the natural frequency f of the system is the same as or close to the vibration frequency of the compressor pipeline 12, the vibration adjusting system formed by the mass unit 131 and the stiffness adjustable unit 132 resonates with the compressor pipeline 12, so that the vibration energy of the compressor pipeline 12 is absorbed, and the vibration of the compressor pipeline 12 is reduced.
In the embodiment of the present invention, after the refrigerator is powered on, the controller 16 obtains the current working state of the compressor 11 in real time, and obtains the vibration frequency of the compressor pipeline 12 detected by the vibration sensor 14 and the displacement of the mass unit 131 detected by the displacement sensor 15 in real time. The operating state of the compressor 11 largely determines the vibration characteristics of the compressor pipeline 12, such as the vibration frequency variation, etc., and considering the operating state of the compressor 11, the stiffness adjusting direction of the stiffness adjusting unit 132 can be better determined, and then the stiffness adjusting direction of the stiffness adjusting unit 132 is comprehensively determined by combining the vibration frequency of the compressor pipeline 12 and the displacement of the mass unit 131, so as to send a corresponding stiffness adjusting instruction to the stiffness adjusting unit 132, and adjust the stiffness of the stiffness adjusting unit 132 to be larger, smaller or unchanged, so as to make the natural frequency of the vibration adjusting system 13 equal to or approach to the vibration frequency.
The embodiment of the invention provides a refrigerator which is provided with a vibration adjusting system comprising a mass unit and a rigidity adjustable unit, wherein the mass unit and the rigidity adjustable unit are arranged in a stacked mode and are fixedly connected to at least one side of a compressor pipeline. After the refrigerator is powered on, the current working state of the compressor is obtained, the vibration frequency of a compressor pipeline and/or the displacement of the mass unit are obtained in real time, and then the rigidity of the rigidity adjustable unit is adjusted according to the current working state of the compressor and the change of the vibration frequency and/or the displacement, so that the natural frequency of the vibration adjusting system is equal to or approaches to the vibration frequency. By adopting the technical means of the embodiment of the invention, the vibration adjusting system is arranged on the compressor pipeline, and the rigidity of the rigidity adjustable unit in the vibration adjusting system is controlled to generate certain natural frequency, so that the vibration adjusting system generates resonance with the compressor pipeline and absorbs the vibration energy of the compressor pipeline, and further the vibration and noise of the compressor in different working states are effectively reduced.
As a preferred implementation manner, the embodiment of the present invention is further implemented on the basis of the above-mentioned embodiment, and the step S13, that is, the adjusting the stiffness of the stiffness adjustable unit according to the current operating state of the compressor and the change of the vibration frequency and/or the displacement, specifically includes steps S131 and S132:
s131, sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
s132, after sending a preset rigidity adjusting signal to the rigidity adjustable unit, adjusting the rigidity adjusting signal according to the vibration frequency and/or the change of the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjustment signal unchanged, changing the adjustment signal or stopping sending the stiffness adjustment signal.
Fig. 5 is a schematic structural diagram of a refrigerator according to a second preferred embodiment of the present invention. In the embodiment of the present invention, after the refrigerator is powered on to operate, the controller 16 obtains the current operating state of the compressor 11, and determines the stiffness adjustment direction of the stiffness adjustable unit 132, specifically, whether the stiffness is increased or decreased, according to the current operating state of the compressor, so as to send a corresponding stiffness adjustment signal, specifically, a stiffness increase signal or a stiffness decrease signal, to the stiffness adjustable unit 132.
Then, the controller 16 obtains the vibration frequency of the compressor pipeline 12 and the displacement of the mass unit 131 in real time, and determines whether to continue outputting the stiffness adjustment signal or to change to output another stiffness adjustment signal according to the variation characteristic of the vibration frequency, or the variation characteristic of the displacement, or the variation characteristic of both the vibration frequency and the displacement, so as to adjust the natural frequency of the vibration adjusting system 13, or to stop outputting the stiffness adjustment signal, so as to maintain the natural frequency of the vibration adjusting system 13 unchanged, so that the natural frequency of the vibration adjusting system 13 approaches the vibration frequency of the compressor pipeline 12, and resonance is realized.
It should be noted that after the stiffness adjustable unit 132 receives the stiffness adjustment signal, the stiffness of the stiffness adjustable unit 132 is adjusted by a certain adjustment step length and an adjustment period according to the indication of the stiffness adjustment signal, for example, the preset stiffness adjustment step length is Δ K, and the adjustment period is 5s, so that when the stiffness adjustable unit 132 continuously receives the stiffness increase signal, the stiffness adjustable unit 132 increases the current stiffness K of the stiffness adjustable unit 132 by Δ K every 5s, so that the current stiffness becomes (K +. DELTA.k); similarly, when the stiffness adjustable unit 132 continuously receives the stiffness reduction signal, the stiffness adjustable unit 132 reduces the current stiffness K of the stiffness adjustable unit per 5s by Δ K, so that the current stiffness becomes (K- Δ K) until the stiffness adjustable unit does not receive the stiffness adjustment signal.
By adopting the technical means of the embodiment of the invention, the influence of the current working state of the compressor on the vibration characteristic of the compressor pipeline is considered, so that the rigidity adjusting direction of the rigidity adjustable unit is preliminarily determined according to the working state of the compressor, the system natural frequency result obtained after rigidity adjustment can be more quickly adapted to the change of the vibration frequency of the compressor pipeline, and then the rigidity of the rigidity adjustable unit is further finely adjusted according to the change of the vibration frequency or displacement of the compressor pipeline, so that the natural frequency of the system is close to the vibration frequency of the compressor pipeline, the vibration adjusting system and the compressor pipeline generate resonance, the vibration energy of the compressor pipeline is absorbed, and the vibration and noise of the compressor in different working states are effectively reduced.
In a specific embodiment, the operating state of the compressor includes: the compressor is in a stage of just starting operation, the compressor is in a stage of just stopping operation, the compressor is in a stage of adjusting the operation rotating speed, and the compressor is in a stage of opening the door of the refrigerator; wherein the operation rotating speed adjusting phase comprises an operation rotating speed increasing phase and an operation rotating speed reducing phase.
It can be understood that, when the compressor 11 is in the above-mentioned operating state, the operation of the compressor system is unstable, the pressure fluctuation inside the compressor changes significantly, which causes the pressure in the pipeline to suddenly increase and decrease, the air flow rate to suddenly decrease and further causes pressure pulsation, the pressure pulsation will generate a pulsating exciting force on the pipeline, thereby exciting the pipeline to vibrate mechanically, the refrigerant pressure pulsation and the compressor vibration will cause the pipeline to vibrate greatly, and at the same time, the pipeline vibration is transmitted to the tank, which causes the tank to vibrate, and thus, significant hum noise is generated. Therefore, the vibration regulation control is required particularly for the above-described operating state of the compressor.
Under the first preferred embodiment, referring to fig. 6, it is a schematic flow chart of the operation performed by the controller during the starting stage of the compressor in the embodiment of the present invention. Step S131, namely, sending a preset stiffness adjusting signal to the stiffness adjustable unit according to the current working state of the compressor, specifically:
and if the compressor is currently in a just-started operation stage, sending a rigidity increasing signal to the rigidity adjustable unit.
Step S132, that is, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is greater than the vibration frequency at the previous moment, the rigidity increasing signal is continuously sent to the rigidity adjustable unit;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
In the embodiment of the invention, if the compressor is in the initial starting operation stage, the process is instantaneous, the vibration of the compressor pipeline is gradually obvious, and if the compressor is not controlled, the noise is gradually obvious. The controller 16 sends a stiffness increasing signal to the stiffness adjusting unit 132 to increase the stiffness of the stiffness adjusting unit 132, and then the controller 16 judges the variation characteristic of the vibration frequency of the compressor pipeline 12 in real time, if the vibration frequency of the compressor pipeline 12 is continuously increased, the controller 16 continuously outputs the stiffness increasing signal to increase the stiffness of the stiffness adjusting unit 132, and the natural frequency f of the vibration adjusting system 13 is gradually increased, so as to absorb the vibration energy of the compressor pipeline; if the vibration frequency of the compressor pipeline 12 starts to decrease, the controller 16 outputs a stiffness decreasing signal to decrease the stiffness of the stiffness adjustable unit 132, and the natural frequency f of the vibration adjusting system 13 is also gradually decreased, so that the vibration adjusting system 13 is matched with the resonance of the compressor pipeline 12 to absorb the vibration energy of the compressor pipeline and reduce the noise; if the vibration frequency of the compressor pipeline 12 remains unchanged, the controller 16 stops outputting the stiffness adjustment signal, maintains the stiffness of the stiffness-adjustable unit 132 unchanged, and the vibration control system 13 forms stable resonance with the compressor pipeline 12.
Under a second preferred embodiment, referring to fig. 7, it is a schematic flow chart of the operation performed by the controller when the compressor is in the stop stage in the embodiment of the present invention. Step S131, that is, sending a preset stiffness adjusting signal to the stiffness adjusting unit according to the current working state of the compressor, specifically:
if the compressor is currently in a just-stopped operation stage, sending a rigidity reduction signal to the rigidity adjustable unit;
step S132, namely after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, continuously sending the rigidity reducing signal to the rigidity adjustable unit;
if the vibration frequency at the current moment is greater than the vibration frequency at the last moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
In the present embodiment, if the compressor is in the shutdown phase, the process is instantaneous and the vibration of the compressor circuit is gradually reduced, and if not controlled, the vibration regulation system 13 does not match the resonance of the compressor circuit, and the process still has noise. The controller 16 sends a stiffness reduction signal to the stiffness adjustable unit 132 to enable the stiffness adjustable unit 132 to reduce the stiffness of the stiffness adjustable unit 132, then the controller 16 judges the variation characteristic of the vibration frequency of the compressor pipeline 12 in real time, if the vibration frequency of the compressor pipeline 12 is reduced, the controller 16 continuously outputs the stiffness reduction signal to reduce the stiffness of the stiffness adjustable unit 132, and the natural frequency f of the vibration adjusting system 13 is gradually reduced, so that the vibration adjusting system 13 is in resonance matching with the compressor pipeline 12 to absorb the vibration energy of the compressor pipeline and reduce the noise; if the vibration frequency of the compressor pipeline 12 starts to increase, the controller 16 outputs a stiffness increasing signal to increase the stiffness of the stiffness adjusting unit 132, and the natural frequency f of the vibration adjusting system 13 is gradually increased, so that the vibration energy of the compressor pipeline is absorbed, and the noise is reduced; if the vibration frequency of the compressor pipeline 12 remains unchanged, the controller 16 stops outputting the stiffness adjustment signal, maintains the stiffness of the stiffness-adjustable unit 132 unchanged, and the vibration control system 13 forms a stable resonance with the compressor pipeline 12.
In a third preferred embodiment, referring to fig. 8, a flow chart of the work performed by the controller in the stage of adjusting the rotation speed of the compressor according to the embodiment of the present invention is shown. Step S131, that is, sending a preset stiffness adjusting signal to the stiffness adjusting unit according to the current working state of the compressor, specifically:
if the compressor is currently in the operation rotating speed adjusting stage, sending a rigidity increasing signal to the rigidity adjusting unit;
step S132, namely after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than the displacement at the previous moment, continuously sending the rigidity increasing signal to the rigidity adjustable unit;
if the displacement at the current moment is smaller than that at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
In the embodiment of the invention, the running rotating speed of the compressor can be adjusted according to the actual running requirement in the running process of the compressor, if the compressor is in a rotating speed adjusting stage, including rotating speed increase and rotating speed reduction, the vibration of a compressor pipeline can be obviously changed, and if the compressor is not controlled, the process has obvious noise. The controller 16 sends a stiffness increasing signal to the stiffness adjusting unit 132 to increase the stiffness of the stiffness adjusting unit 132, and then the controller 16 judges the variation characteristic of the displacement of the mass unit 131 in real time, if the displacement of the mass unit 131 is continuously increased, the controller 16 continuously outputs the stiffness increasing signal to increase the stiffness of the stiffness adjusting unit 132, and the natural frequency f of the vibration adjusting system 13 is gradually increased, so that the vibration energy of the compressor pipeline is absorbed, and the noise is reduced; if the displacement of the mass unit 131 starts to decrease, the controller 16 outputs a stiffness decreasing signal to decrease the stiffness of the stiffness adjustable unit 132, so that the natural frequency f of the vibration adjusting system 13 is gradually decreased, and thus the vibration adjusting system 13 is matched with the resonance of the compressor pipeline 12 to absorb the vibration energy of the compressor pipeline and reduce the noise; if the displacement of the mass unit 131 remains unchanged, the controller 16 stops outputting the stiffness adjustment signal, maintains the stiffness of the stiffness-adjustable unit 132 unchanged, and the vibration control system 13 forms a stable resonance with the compressor pipeline 12.
It can be understood that the vibration frequency of the compressor pipeline and the displacement of the mass unit form a certain linear relationship, and when the compressor is currently in the operation rotation speed adjustment stage, the rigidity adjustment of the rigidity adjustable unit can be realized by detecting the vibration frequency of the compressor pipeline.
Specifically, after the stiffness increasing signal is sent to the stiffness adjustable unit if the compressor is currently in the operation rotating speed adjusting stage, in step S132, that is, after a preset stiffness adjusting signal is sent to the stiffness adjustable unit, the stiffness adjusting signal is adjusted according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is greater than the vibration frequency at the previous moment, the rigidity increasing signal is continuously sent to the rigidity adjustable unit;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
In a fourth preferred embodiment, referring to fig. 9, a flow chart of the work performed by the controller when the compressor is in the opening stage of the refrigerator in the embodiment of the present invention is shown. Step S131, namely, sending a preset stiffness adjusting signal to the stiffness adjustable unit according to the current working state of the compressor, specifically:
if the compressor is currently in the stage of opening the door of the refrigerator, sending a rigidity reducing signal to the rigidity adjustable unit;
step S132, namely after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than that at the previous moment, the rigidity reducing signal is continuously sent to the rigidity adjustable unit;
if the displacement at the current moment is smaller than the displacement at the previous moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
In the embodiment of the invention, if a user opens the refrigerator door to access articles in the operation process of the compressor, the operation parameters of the compressor are obviously changed, and if the operation process is not controlled, the process has obvious noise. The controller 16 sends a stiffness reducing signal to the stiffness adjustable unit 132 to enable the stiffness adjustable unit 132 to reduce the stiffness of the stiffness adjustable unit 132, then the controller 16 judges the variation characteristic of the displacement of the mass unit 131 in real time, if the displacement of the mass unit 131 is reduced, the controller 16 continuously outputs the stiffness reducing signal to reduce the stiffness of the stiffness adjustable unit 132, and the natural frequency f of the vibration adjusting system 13 is gradually reduced, so that the vibration adjusting system 13 is in resonance matching with the compressor pipeline 12 to absorb the vibration energy of the compressor pipeline and reduce the noise; if the displacement of the mass unit 131 starts to increase, the controller 16 outputs a stiffness increasing signal to increase the stiffness of the stiffness adjustable unit 132, so that the natural frequency f of the vibration adjusting system 13 is gradually increased, thereby absorbing the vibration energy of the compressor pipeline and reducing the noise; if the displacement of the mass unit 131 remains unchanged, the controller 16 stops outputting the stiffness adjustment signal, maintains the stiffness of the stiffness adjustable unit 132 unchanged, and the vibration adjusting system 13 forms stable resonance with the compressor pipeline 12.
It can be understood that, when the compressor is currently in the door opening stage of the refrigerator, the rigidity adjustment of the rigidity adjustable unit can also be realized by detecting the vibration frequency of the compressor pipeline.
Specifically, after the stiffness reduction signal is sent to the stiffness adjustable unit if the compressor is currently in the stage of opening the door of the refrigerator, in step S132, that is, after a preset stiffness adjustment signal is sent to the stiffness adjustable unit, the stiffness adjustment signal is adjusted according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is greater than the vibration frequency at the previous moment, the rigidity reducing signal is continuously sent to the rigidity adjustable unit;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
By adopting the technical means of the embodiment of the invention, when the compressor is in different working states, the rigidity adjustment of the rigidity adjustable unit can be realized in a targeted manner according to the different working states of the compressor, so that the natural frequency of the vibration adjusting system arranged on the compressor pipeline is adjusted, the natural frequency of the vibration adjusting system is close to the vibration frequency of the compressor pipeline, the vibration adjusting system and the compressor pipeline generate resonance, the vibration energy of the compressor pipeline is absorbed, the vibration and noise of the compressor in different working states are further effectively reduced, and good use experience is provided for users.
Referring to fig. 10, a flow chart of a vibration adjusting method of a compressor according to an embodiment of the present invention is shown. The embodiment of the invention also provides a vibration adjusting method of the compressor, which is applied to a refrigerator, and the refrigerator comprises the following steps:
the compressor and a compressor pipeline connected with the compressor;
the vibration adjusting system comprises a mass unit and a rigidity adjustable unit; the mass unit and the rigidity adjustable unit are stacked and fixedly connected to at least one side of the compressor pipeline;
the vibration sensor is used for detecting the vibration frequency of the compressor pipeline;
a displacement sensor for detecting a displacement of the mass unit;
the vibration adjusting method of the compressor includes steps S21 to S23:
s21, after the refrigerator is powered on, acquiring the current working state of the compressor;
s22, acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
s23, adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
By adopting the technical means of the embodiment of the invention, the vibration adjusting system is arranged on the compressor pipeline, and the rigidity of the rigidity adjustable unit in the vibration adjusting system is controlled to generate a certain natural frequency, so that the vibration adjusting system resonates with the compressor pipeline to absorb the vibration energy of the compressor pipeline, and further the vibration and noise of the compressor in different working states are effectively reduced.
As a preferred embodiment, the step S23, namely, the adjusting the stiffness of the stiffness-adjustable unit according to the current operating state of the compressor and the change of the vibration frequency and/or the displacement specifically includes steps S231 and S232:
s231, sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
s232, after sending a preset rigidity adjusting signal to the rigidity adjustable unit, adjusting the rigidity adjusting signal according to the change of the vibration frequency and/or the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjustment signal unchanged, changing the adjustment signal or stopping sending the stiffness adjustment signal.
Preferably, the operating state of the compressor includes: the compressor is in a stage of just starting operation, the compressor is in a stage of just stopping operation, the compressor is in a stage of adjusting the operation rotating speed, and the compressor is in a stage of opening the door of the refrigerator.
It should be noted that, the vibration adjustment method for a compressor according to the embodiment of the present invention is the same as all the process steps executed by the controller for a refrigerator according to the above embodiment, and the working principles and beneficial effects of the two are in one-to-one correspondence, so that the detailed description is omitted.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), or the like.
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:
the compressor is connected with a compressor pipeline;
the vibration adjusting system comprises a mass unit and a rigidity adjustable unit; the mass unit and the rigidity adjustable unit are arranged in a stacked mode and fixedly connected to at least one side of the compressor pipeline;
the vibration sensor is used for detecting the vibration frequency of the compressor pipeline;
a displacement sensor for detecting a displacement of the mass unit;
a controller to:
after the refrigerator is powered on, acquiring the current working state of the compressor;
acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
and adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
2. The refrigerator according to claim 1, wherein the adjusting the stiffness of the stiffness-adjustable unit according to the current operating state of the compressor and the change in the vibration frequency and/or the displacement comprises:
sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
after sending a preset stiffness adjusting signal to the stiffness adjustable unit, adjusting the stiffness adjusting signal according to the change of the vibration frequency and/or the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjustment signal unchanged, changing the adjustment signal or stopping sending the stiffness adjustment signal.
3. The refrigerator as claimed in claim 2, wherein the operating state of the compressor includes: the compressor is in the stage of just starting operation, the compressor is in the stage of just stopping operation, the compressor is in the stage of adjusting the running rotating speed, and the compressor is in the stage of opening the door of the refrigerator.
4. The refrigerator according to claim 3, wherein the sending of a preset stiffness adjustment signal to the stiffness adjustable unit according to the current operating state of the compressor is specifically:
if the compressor is currently in a just-started operation stage, sending a rigidity increasing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is greater than the vibration frequency at the last moment, continuing to send the rigidity increasing signal to the rigidity adjustable unit;
if the vibration frequency at the current moment is less than the vibration frequency at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
5. The refrigerator according to claim 3, wherein the sending of a preset stiffness adjustment signal to the stiffness adjustable unit according to the current operating state of the compressor is specifically:
if the compressor is currently in a just-stopped operation stage, sending a rigidity reducing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the change of the vibration frequency in real time;
if the vibration frequency at the current moment is smaller than the vibration frequency at the previous moment, the rigidity reducing signal is continuously sent to the rigidity adjustable unit;
if the vibration frequency at the current moment is greater than the vibration frequency at the last moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the vibration frequency is kept unchanged at the current moment, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
6. The refrigerator according to claim 3, wherein the sending of a preset stiffness adjustment signal to the stiffness adjustable unit according to the current operating state of the compressor is specifically:
if the compressor is currently in the operation rotating speed adjusting stage, sending a rigidity increasing signal to the rigidity adjusting unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity increasing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than the displacement at the previous moment, continuously sending the rigidity increasing signal to the rigidity adjustable unit;
if the displacement at the current moment is smaller than that at the previous moment, sending a rigidity reducing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
7. The refrigerator according to claim 3, wherein the sending of a preset stiffness adjustment signal to the stiffness adjustable unit according to the current operating state of the compressor is specifically:
if the compressor is currently in the stage of opening the door of the refrigerator, sending a rigidity reducing signal to the rigidity adjustable unit;
then, after sending a preset stiffness adjustment signal to the stiffness adjustable unit, adjusting the stiffness adjustment signal according to the change of the vibration frequency and/or the displacement, specifically:
after sending a rigidity reducing signal to the rigidity adjustable unit, judging the size change of the displacement in real time;
if the displacement at the current moment is larger than the displacement at the previous moment, the rigidity reducing signal is continuously sent to the rigidity adjustable unit;
if the displacement at the current moment is smaller than the displacement at the previous moment, sending a rigidity increasing signal to the rigidity adjustable unit;
and if the displacement at the current moment is kept unchanged, stopping sending the rigidity adjusting signal to the rigidity adjusting unit.
8. A vibration adjusting method of a compressor is characterized by being applied to a refrigerator, and the refrigerator comprises the following steps:
the compressor is connected with a compressor pipeline;
the vibration adjusting system comprises a mass unit and a rigidity adjustable unit; the mass unit and the rigidity adjustable unit are arranged in a stacked mode and fixedly connected to at least one side of the compressor pipeline;
the vibration sensor is used for detecting the vibration frequency of the compressor pipeline;
a displacement sensor for detecting a displacement of the mass unit;
the method comprises the following steps:
after the refrigerator is powered on, acquiring the current working state of the compressor;
acquiring the vibration frequency of the compressor pipeline and/or the displacement of the mass unit in real time;
and adjusting the rigidity of the rigidity adjustable unit according to the current working state of the compressor and the change of the vibration frequency and/or the displacement so as to enable the natural frequency of the vibration adjusting system to be equal to or approximate to the vibration frequency.
9. The vibration adjusting method for compressor according to claim 8, wherein the adjusting the stiffness of the stiffness-adjustable unit according to the current operating state of the compressor and the change of the vibration frequency and/or the displacement comprises:
sending a preset rigidity adjusting signal to the rigidity adjusting unit according to the current working state of the compressor; the rigidity adjusting signal is used for triggering the rigidity adjusting unit to adjust the rigidity of the rigidity adjusting unit according to the rigidity adjusting signal by a preset rigidity adjusting step length and a preset rigidity adjusting period; the rigidity adjusting signal is a rigidity increasing signal or a rigidity decreasing signal;
after a preset rigidity adjusting signal is sent to the rigidity adjustable unit, the rigidity adjusting signal is adjusted according to the vibration frequency and/or the change of the displacement; wherein the stiffness adjustment signal is adjusted in a manner that: keeping the stiffness adjustment signal unchanged, changing the adjustment signal or stopping sending the stiffness adjustment signal.
10. A vibration adjusting method of a compressor as set forth in claim 9, wherein the operation state of the compressor includes: the compressor is in the stage of just starting operation, the compressor is in the stage of just stopping operation, the compressor is in the stage of adjusting the running rotating speed, and the compressor is in the stage of opening the door of the refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960517.XA CN115355639A (en) | 2022-08-11 | 2022-08-11 | Refrigerator and vibration adjusting method of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210960517.XA CN115355639A (en) | 2022-08-11 | 2022-08-11 | Refrigerator and vibration adjusting method of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115355639A true CN115355639A (en) | 2022-11-18 |
Family
ID=84001225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210960517.XA Pending CN115355639A (en) | 2022-08-11 | 2022-08-11 | Refrigerator and vibration adjusting method of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115355639A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328211A (en) * | 2000-06-13 | 2001-12-26 | 三星光州电子株式会社 | Vibration absorption structure for high-pressure exhausting pipe of compressor |
| CN103836869A (en) * | 2014-03-18 | 2014-06-04 | 海信（山东）冰箱有限公司 | Refrigerator and refrigerating system thereof |
| CN105972370A (en) * | 2016-05-27 | 2016-09-28 | 哈尔滨工程大学 | Novel variable-rigidity semi-active pipeline vibration absorber |
| US20170058885A1 (en) * | 2015-08-31 | 2017-03-02 | Whirlpool S.A. | Method and system for protection and diagnosis of a linear compressor, and a linear compressor |
| CN110259877A (en) * | 2019-05-22 | 2019-09-20 | 长安大学 | A kind of compound dynamic vibration absorber and its control method |
| CN209943403U (en) * | 2019-04-18 | 2020-01-14 | 诺博橡胶制品有限公司 | Dynamic vibration absorber with adjustable rigidity |
| US20210215371A1 (en) * | 2019-03-11 | 2021-07-15 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Control method for air conditioner |
| CN113565912A (en) * | 2021-06-22 | 2021-10-29 | 东风汽车集团股份有限公司 | Dynamic vibration absorption structure and method with self-adaptive and fast-adjustable resonance frequency |
| CN216618968U (en) * | 2021-12-02 | 2022-05-27 | 海信（山东）空调有限公司 | Air conditioner |
| CN114543401A (en) * | 2022-02-14 | 2022-05-27 | 格力电器（合肥）有限公司 | Air conditioner pipeline anti-vibration structure, air conditioner and air conditioner pipeline anti-resonance method |
-
2022
- 2022-08-11 CN CN202210960517.XA patent/CN115355639A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328211A (en) * | 2000-06-13 | 2001-12-26 | 三星光州电子株式会社 | Vibration absorption structure for high-pressure exhausting pipe of compressor |
| CN103836869A (en) * | 2014-03-18 | 2014-06-04 | 海信（山东）冰箱有限公司 | Refrigerator and refrigerating system thereof |
| US20170058885A1 (en) * | 2015-08-31 | 2017-03-02 | Whirlpool S.A. | Method and system for protection and diagnosis of a linear compressor, and a linear compressor |
| CN105972370A (en) * | 2016-05-27 | 2016-09-28 | 哈尔滨工程大学 | Novel variable-rigidity semi-active pipeline vibration absorber |
| US20210215371A1 (en) * | 2019-03-11 | 2021-07-15 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Control method for air conditioner |
| CN209943403U (en) * | 2019-04-18 | 2020-01-14 | 诺博橡胶制品有限公司 | Dynamic vibration absorber with adjustable rigidity |
| CN110259877A (en) * | 2019-05-22 | 2019-09-20 | 长安大学 | A kind of compound dynamic vibration absorber and its control method |
| CN113565912A (en) * | 2021-06-22 | 2021-10-29 | 东风汽车集团股份有限公司 | Dynamic vibration absorption structure and method with self-adaptive and fast-adjustable resonance frequency |
| CN216618968U (en) * | 2021-12-02 | 2022-05-27 | 海信（山东）空调有限公司 | Air conditioner |
| CN114543401A (en) * | 2022-02-14 | 2022-05-27 | 格力电器（合肥）有限公司 | Air conditioner pipeline anti-vibration structure, air conditioner and air conditioner pipeline anti-resonance method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9399991B2 (en) | Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system | |
| JP2002106464A (en) | Suction muffler for compressor | |
| JPH03217322A (en) | Air conditioning control device for vehicle | |
| JP4791550B2 (en) | Linear compressor control system, method for controlling linear compressor, and linear compressor | |
| CN115355639A (en) | Refrigerator and vibration adjusting method of compressor | |
| CN109312730B (en) | Electronic control device for refrigerant compressor | |
| JP2001354028A (en) | Thermo-compression type refrigerating cycle | |
| KR20110089532A (en) | A refrigerator and a control method the same | |
| CN113048716B (en) | Control method and refrigerator | |
| JP2003003958A (en) | Hermetic electric compressor and refrigerating device using the same | |
| US20230349609A1 (en) | Refrigerator and control method thereof | |
| JP2013096602A (en) | Refrigeration cycle device | |
| JP2000121180A (en) | Cooler | |
| KR100509061B1 (en) | A driving control method of linear compressor | |
| CN116147258A (en) | Refrigerator and compressor control method | |
| JP2014034303A (en) | Vehicle air conditioner | |
| KR100548301B1 (en) | Driving control apparatus and method for reciprocating compressor | |
| CN116659149A (en) | Refrigerator and control method of variable frequency compressor of refrigerator | |
| JPH11201560A (en) | Supercritical refrigerating cycle | |
| KR100513989B1 (en) | Control method for noise reduction of refrigerator | |
| KR20020000799A (en) | Refrigerating system for domestic refrigerating appliances | |
| KR20230134355A (en) | Method and apparatus for controling driving of compressor | |
| KR100542502B1 (en) | Method for driving cooling fan of kim-chi storage | |
| KR100565340B1 (en) | Forward/reverse rotation compressor driving method for refrigerator equiped with pole change motor | |
| JP2003148358A (en) | Air conditioner for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |