CN107576144B - Shutdown method and device for refrigerator - Google Patents
Shutdown method and device for refrigerator Download PDFInfo
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- CN107576144B CN107576144B CN201710676506.8A CN201710676506A CN107576144B CN 107576144 B CN107576144 B CN 107576144B CN 201710676506 A CN201710676506 A CN 201710676506A CN 107576144 B CN107576144 B CN 107576144B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000003507 refrigerant Substances 0.000 claims abstract description 199
- 239000007788 liquid Substances 0.000 claims abstract description 157
- 239000011550 stock solution Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000007774 longterm Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010037844 rash Diseases 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The invention provides a shutdown method of a refrigerator, wherein the refrigerator comprises a liquid storage device and a second electromagnetic valve; the liquid storage device is communicated with an exhaust port of the compressor through a pipeline, and can suck and store a refrigerant, discharge the stored refrigerant and open and close the pipeline between the liquid storage device and the exhaust port of the compressor; the shutdown method comprises the following steps: controlling the second electromagnetic valve to be in a closed state, controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in an open state, and controlling the liquid storage device to suck a refrigerant; continuously acquiring first state information of a compressor and/or a liquid storage device until the first state information meets a first preset condition; controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in a closed state, and controlling a second electromagnetic valve to be in an open state; the compressor is turned off. In this way, noise is greatly reduced when the compressor is turned off.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a method and a device for stopping a refrigerator.
Background
During the use process of the refrigerator, if the difference value between the temperature of the storage chamber and the preset temperature exceeds a preset threshold value, the compressor starts to work, the compressor enters a normal working state, at the moment, the temperature of the storage chamber slowly decreases, after a period of time, if the difference value between the temperature of the storage chamber and the preset temperature is smaller than the preset threshold value, the compressor stops working, and the compressor is in a closed state; at this moment, the heat outside the refrigerator body can slowly enter the storage chamber, the temperature of the storage chamber can rise, and the compressor can be started again until the difference value between the temperature of the storage chamber and the preset temperature exceeds the preset threshold value again, so that the compressor can be started, stopped and started … … continuously in the using process of the refrigerator. In the starting and stopping processes of the compressor, due to the reasons of large load, sudden cut-off of a power supply and the like, noise is generated, and the use experience of a customer is reduced; in the prior art, measures for reducing noise of the compressor are generally taken, including: the damping daub and the damping rubber pad are arranged between the compressor and the refrigerator body or the secondary eruption pipe for reducing the eruption sound is arranged on the compressor, but the measures are that after the noise is generated, part of the noise is removed, and the noise is not reduced from the source, so that the effect is not obvious.
Therefore, how to effectively reduce the noise generated when the compressor is stopped is a problem to be solved.
Disclosure of Invention
The invention aims to provide a method and a device for stopping a refrigerator.
In order to achieve one of the above objects, an embodiment of the present invention provides a shutdown method of a refrigerator, the refrigerator including: the device comprises a compressor, a condenser, a capillary tube, an evaporator, a liquid storage device and a second electromagnetic valve; the liquid storage device is communicated with an exhaust port of the compressor through a pipeline, and can suck and store a refrigerant, discharge the stored refrigerant and open and close the pipeline between the liquid storage device and the exhaust port of the compressor; the first end of the second electromagnetic valve is communicated with an exhaust port of the compressor through a pipeline, and the second end of the second electromagnetic valve is communicated with one end of the condenser; the other end of the condenser, the capillary tube, the evaporator and the return air port of the compressor are communicated in series through pipelines;
the shutdown method comprises the following steps:
controlling the second electromagnetic valve to be in a closed state, controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in an open state, and controlling the liquid storage device to suck a refrigerant;
continuously acquiring first state information of a compressor and/or a liquid storage device until the first state information meets a first preset condition;
controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in a closed state, and controlling a second electromagnetic valve to be in an open state;
the compressor is turned off.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state and a pipeline between the liquid storage device and an exhaust port of the compressor is controlled to be in an open state, the continuous working time of the compressor is obtained;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than or equal to a first preset time value, a first preset condition is met.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: acquiring the quality value of the refrigerant in the liquid storage device;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than or equal to a first preset quality value, a first preset condition is met.
As a further improvement of the embodiment of the present invention, the liquid storage device includes: the outlet and the inlet of the liquid storage tank are the same; the port of the liquid storage tank is communicated with the exhaust port of the compressor through a first electromagnetic valve;
the pipeline between the control stock solution device and the gas vent of compressor is in the open mode, and controls stock solution device suction refrigerant, includes: controlling the first electromagnetic valve to be in an open state;
control the pipeline between the gas vent of stock solution device and compressor and be in the closed condition, include: and controlling the first electromagnetic valve to be in a closed state.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state and the first electromagnetic valve is controlled to be in an open state, acquiring the continuous working time of the compressor;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: obtaining a quality value of refrigerant in the liquid storage tank;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
As a further improvement of the embodiment of the present invention, the liquid storage device includes: the inlet of the liquid storage tank is communicated with the exhaust port of the compressor through the third electromagnetic valve, and the outlet of the liquid storage tank is communicated with the exhaust port of the compressor through the fourth electromagnetic valve;
the pipeline between the control stock solution device and the gas vent of compressor is in the open mode, and controls stock solution device suction refrigerant, includes: controlling the third electromagnetic valve to be in an open state and the fourth electromagnetic valve to be in a closed state;
control the pipeline between the gas vent of stock solution device and compressor and be in the closed condition, include: and controlling the third electromagnetic valve and the fourth electromagnetic valve to be in a closed state.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state, the third electromagnetic valve is controlled to be in an open state and the fourth electromagnetic valve is controlled to be in a closed state, the continuous working time of the compressor is obtained;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
As a further improvement of the embodiment of the present invention, the acquiring the first state information of the compressor and/or the liquid storage device includes: obtaining a quality value of refrigerant in the liquid storage tank;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
An embodiment of the present invention provides a stopping device of a refrigerator, the refrigerator including: the device comprises a compressor, a condenser, a capillary tube, an evaporator, a liquid storage device and a second electromagnetic valve; the liquid storage device is communicated with an exhaust port of the compressor through a pipeline, and can suck and store a refrigerant, discharge the stored refrigerant and open and close the pipeline between the liquid storage device and the exhaust port of the compressor; the first end of the second electromagnetic valve is communicated with an exhaust port of the compressor through a pipeline, and the second end of the second electromagnetic valve is communicated with one end of the condenser; the other end of the condenser, the capillary tube, the evaporator and the return air port of the compressor are communicated in series through pipelines;
the shutdown device includes:
the refrigerant suction module is started and used for controlling the second electromagnetic valve to be in a closed state, controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in an open state and controlling the liquid storage device to suck the refrigerant;
the first state judgment module is used for continuously acquiring first state information of the compressor and/or the liquid storage device until the first state information meets a first preset condition;
the refrigerant suction stopping module is used for controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in a closed state and controlling the second electromagnetic valve to be in an open state;
a compressor shutdown module to shutdown the compressor.
For the prior art, the invention has the technical effects that: in the years of work of the inventor, it is found that in the existing refrigerator, when the compressor is in a normal working state, the amount of refrigerant in the pipeline is large, further, the density of the refrigerant at the air return port of the compressor is large, and the pressure at the air return port is large, so that in order to ensure that the compressor sucks the refrigerant normally, the motor in the compressor needs to operate in a large load state, that is, the motor needs to output a large torque, so that when the compressor is shut down, a large noise is generated; in the invention, before the compressor is stopped, part of the refrigerant is fed into the suction liquid storage device, so that the quantity of the refrigerant in the pipeline is reduced, and the noise generated when the compressor is shut down is reduced.
Drawings
Fig. 1 is a schematic structural view of a refrigerator in a first embodiment and a second embodiment of the present invention;
fig. 2 is a flowchart of the shutdown of the refrigerator according to the first embodiment of the present invention;
fig. 3 is a flowchart illustrating a start-up process of a refrigerator according to a first embodiment of the present invention;
fig. 4 is a flowchart of the stop of the refrigerator in the second embodiment of the present invention;
fig. 5 is a flowchart of the start-up of the refrigerator according to the second embodiment of the present invention;
fig. 6 is a schematic structural view of a refrigerator according to a third embodiment of the present invention;
fig. 7 is a flowchart of the stop of the refrigerator in the third embodiment of the present invention;
fig. 8 is a flowchart of the startup of the refrigerator in the third embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Also, it should be understood that, although the terms first, second, etc. may be used herein to describe various elements or structures, these described elements should not be limited by these terms. These terms are only used to distinguish these descriptive objects from one another. For example, the first solenoid valve may be referred to as the second solenoid valve, and similarly the second solenoid valve may also be referred to as the first solenoid valve, without departing from the scope of the present application.
An embodiment of the present invention provides a refrigerator, as shown in fig. 1, where the refrigerator includes a compressor 1, a condenser 5, a capillary tube 6, and an evaporator 7, and the refrigerator further includes: a liquid storage device 9 and a second electromagnetic valve 22;
the liquid storage device 9 is communicated with an exhaust port of the compressor 1 through a pipeline 8, and the liquid storage device 9 can suck and store refrigerant, discharge the stored refrigerant and open and close the pipeline 8 between the pipeline and the exhaust port of the compressor 1;
a first end of the second electromagnetic valve 22 is communicated with an exhaust port of the compressor 1 through a pipeline 8, and a second end of the second electromagnetic valve is communicated with one end of the condenser 5; the other end of the condenser 5, the capillary tube 6, the evaporator 7 and the return air port of the compressor 1 are communicated in series through a pipeline 8.
Here, the liquid storage device 9 may include a liquid storage tank for storing refrigerant, a valve for sucking/discharging refrigerant, and a pump for opening or closing the pipe 8 between the liquid storage device 9 and the discharge port of the compressor 1.
Here, the liquid storage device 9 has the following functions: (1) a pipeline between the compressor and the exhaust port of the compressor 1 is in an open state, and refrigerant is sucked from the exhaust port of the compressor 1 and stored; (2) the pipeline between the compressor and the exhaust port of the compressor 1 is in an open state, and the stored refrigerant is discharged to the exhaust port of the compressor 1; (3) opening the conduit 8 between the reservoir 9 and the discharge of the compressor 1, while refrigerant is free to flow between the discharge of the compressor 1 and the reservoir 9; (4) the conduit 8 between the reservoir 9 and the discharge of the compressor 1 is closed and no refrigerant can flow between the discharge of the compressor 1 and the reservoir 9.
As shown by the arrow in fig. 1, the refrigeration process of the refrigerator is as follows: the compressor 1 compresses the low-pressure refrigerant flowing from the pipeline 8 into high-temperature high-pressure refrigerant, the refrigerant enters the condenser 5 through the exhaust port of the compressor 1 and the pipeline 8, and the refrigerant is condensed into high-temperature medium-pressure refrigerant in the condenser 5; the high-temperature medium-pressure refrigerant is filtered by a drying filter and then enters a capillary tube 6, the high-temperature medium pressure is changed into low-temperature low pressure after the high-temperature medium pressure is throttled and reduced by the capillary tube 6, and at the moment, the heat carried by the refrigerant is radiated to the surrounding air; the low-temperature and low-pressure refrigerant absorbs a large amount of heat in the storage compartment in the evaporator 7 and is gasified into saturated vapor, thereby achieving refrigeration, and then the refrigerant is changed into low-pressure refrigerant in the suction pipe and is sucked into the compressor 1 to maintain the cycle. Here, if the refrigerator is provided with only a refrigerating chamber, the storage compartment is the refrigerating chamber; if the refrigerator is provided with only a freezing chamber, the storage compartment is the freezing chamber; if the refrigerator is provided with a refrigerating compartment and a freezing compartment, the storage compartment is the refrigerating compartment and/or the freezing compartment.
Preferably, the refrigerator further comprises: and the control module is used for controlling the opening and closing of the second electromagnetic valve 22, controlling the opening and closing of the compressor 1, controlling the refrigerant suction and discharge of the liquid storage device 9 and controlling the opening and closing of the pipeline 8 between the liquid storage device and the exhaust port of the compressor. Here, the control module may be a hardware device, or may be a software module or a combination of software and hardware. Here, the control module is able to send control commands to the second solenoid valve 22, the compressor 1 and the reservoir 9, so as to control these devices.
Preferably, the control module controls the second solenoid valve 22 to be in the open state when it is determined that the compressor 1 is in the normal operation state. Here, when the second electromagnetic valve 22 is in an open state, the refrigerant can flow among the compressor 1, the condenser 5, the capillary tube 6, and the evaporator 7, thereby performing cooling.
Preferably, the control module controls the reservoir 9 to close the conduit 8 to the discharge of the compressor when it is determined that the compressor 1 is in the deactivated state.
Here, the control module can acquire the state information of the second electromagnetic valve 22, the compressor 1, the liquid storage device 9 and other components of the refrigerator, and determine the operating state of the refrigerator through the state information. When the refrigerator is refrigerating, the compressor 1 is in a normal working state, the refrigerant flows in the pipe 8, at this time, the temperature of the storage compartment slowly decreases, and the second electromagnetic valve 22 is in an open state, so that the refrigerant flows in the pipe 8; at this time, the pipe 8 between the liquid storage device 9 and the exhaust port of the compressor 1 may be in an open state or a closed state.
The embodiment also provides a shutdown method of the refrigerator, which comprises the following steps:
step 201: controlling the second electromagnetic valve 22 to be in a closed state, controlling the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 to be in an open state, and controlling the liquid storage device 9 to suck a refrigerant;
when the refrigerator refrigerates, the control module can detect the temperature of the storage chamber in real time, when the difference value between the temperature of the storage chamber and the preset temperature is smaller than the preset threshold value, the refrigerator needs to stop refrigerating, namely the compressor 1 needs to be closed, and the compressor enters a pre-closing state; at this time, the control module needs to close the second electromagnetic valve 22 (if the pipeline 8 between the liquid device 9 and the exhaust port of the compressor 1 is in a closed state, it needs to be opened), and controls the liquid storage device 9 to suck the refrigerant, at this time, the high-temperature and high-pressure refrigerant vapor cannot flow from the compressor 1 to the condenser 5, because the compressor 1 is still running, the compressor 1 will continue to suck the low-pressure refrigerant, compress the low-temperature and high-pressure refrigerant into the high-temperature and high-pressure refrigerant, and discharge the high-temperature and high-pressure refrigerant from the exhaust port, and the high-temperature and high-pressure refrigerant will be sucked into the liquid storage device 9 along the pipeline 8, so that the amount of the refrigerant between the other end of.
Step 202: continuously acquiring first state information of the compressor 1 and/or the liquid storage device 9 until the first state information meets a first preset condition;
since the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7, and the return port of the compressor 1 is continuously decreased, the first control means needs to detect first state information of the compressor 1 and/or the reservoir 9 (e.g., the amount of refrigerant stored in the reservoir 9; the operating time of the compressor 1 from the start of step 201, etc.) at any time, and when it is determined that the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7, and the return port of the compressor 1 is decreased to a preset value based on the first state information, it is necessary to operate step 203; otherwise, the process continues to step 202.
Step 203: controlling a pipeline 8 between the liquid storage device 9 and an exhaust port of the compressor 1 to be in a closed state, and controlling a second electromagnetic valve 22 to be in an open state;
here, it can be understood that, since the pipe 8 between the liquid storage device 9 and the discharge port of the compressor 1 is closed, the liquid storage device 9 cannot suck the refrigerant from the discharge port of the compressor 1, and at this time, the suction of the refrigerant into the liquid storage device 9 needs to be stopped (for example, the pump is turned off).
After closing the pipe 8 between the liquid storage device 9 and the exhaust port of the compressor 1, the high-temperature and high-pressure refrigerant that has entered the liquid storage device 9 is stored in the liquid storage device 9; after the second solenoid valve 22 is opened, the refrigerant can flow along the compressor 1, the condenser 5, the capillary tube 6 and the evaporator 7, but the amount of the refrigerant is greatly reduced.
Step 204: the compressor 1 is switched off.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a normal working state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the air return port of the compressor 1 is large, and the pressure at the air return port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a large load state, that is, the motor needs to output a large torque; it will be appreciated that when the motor is not rotating, the motor shaft is in a first position, when the motor is rotating, the motor shaft is in a second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned off, the motor shaft needs to be returned from the second position to the first position, and the motor shaft is returned from the second position to the first position due to a large torque just due to the output of the motor, the generated vibration is also large, and the noise is also large; and the refrigerant stops flowing due to the sudden stop of the compressor, and a large amount of refrigerant in the pipe causes a large impact to the pipe and also generates a large noise. In the stopping method provided in the present embodiment, since the amount of refrigerant in the pipe is small, noise generated when the compressor 1 is turned off is greatly reduced. After the compressor 1 is turned off, the compressor 1 is in an off state.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage device 9 includes: after controlling the second electromagnetic valve 22 to be in a closed state and controlling the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 to be in an open state, acquiring the continuous working time of the compressor 1; the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than or equal to a first preset time value, a first preset condition is met.
It can be seen that, in step 204, the amount of refrigerant in the pipe needs to be sufficiently small when the compressor 1 is turned off, and therefore, the first preset time value may be set according to the long-term use experience of the refrigerator; i.e. after the compressor 1 has been operated for a first preset time value after closing the second solenoid valve 22, the amount of refrigerant in the conduit is sufficiently small.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage device 9 includes: acquiring the quality value of the refrigerant in the liquid storage device 9; the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than or equal to a first preset quality value, a first preset condition is met.
It can be seen that in step 204, upon turning off the compressor 1, the amount of refrigerant in the piping needs to be sufficiently small, and therefore, the first preset quality value can be set according to the long-term use experience of the refrigerator; therefore, after the second solenoid valve is closed, if the mass value of the refrigerant taken into the liquid storage device 9 reaches the first preset mass value, the amount of refrigerant remaining in the pipe is sufficiently small.
When the refrigerator stops cooling, the compressor 1 is in a stop state, the refrigerant stops flowing in the pipeline 8, at this time, the temperature of the storage chamber slowly rises, and the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 is in a closed state, and during the period when the compressor 1 is in the stop state, the refrigerant stored in the liquid storage device 9 cannot flow into the exhaust port of the compressor due to the closing of the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor. The second solenoid valve 22 may be in an open state or a closed state.
It can be seen that when the refrigerator is stopped, the liquid storage device 9 stores the refrigerant therein, and the pipeline between the liquid storage device 9 and the exhaust port of the compressor 1 is in a closed state;
the embodiment also provides a starting method of the refrigerator, which comprises the following steps:
step 301: controlling the second electromagnetic valve 22 to be in an open state, and starting the compressor 1;
during the shutdown, the refrigerant with high temperature and high pressure enters the liquid storage device 9, and during the period of time when the refrigerator stops cooling, the liquid storage device 9 may dissipate heat to the outside, and the temperature and pressure of the refrigerant may decrease. After a period of time, when the control module determines that the difference value between the temperature of the storage compartment and the preset temperature is greater than the preset threshold value, the refrigerator needs to start refrigeration, namely the compressor 1 needs to be started, and at the moment, the compressor 1 enters a pre-starting state.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a closed state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the return port and the exhaust port of the compressor 1 is large, and the pressure at the return port and the exhaust port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a heavy-load state, namely, the motor needs to output a large torque; it will be appreciated that when the motor is not operating, the motor shaft is in the first position, and when the motor is operating, the motor shaft is in the second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned on, the motor shaft needs to be restored from the first position to the second position, and the vibration generated is large and the noise is large just because the torque of the output of the motor is large; and the refrigerant starts to flow due to the sudden start of the compressor, and the large amount of refrigerant in the pipe causes a large impact on the pipe and also generates a large noise. In the method for starting the refrigerator provided by the present invention, the amount of refrigerant in the pipe 8 is small, thereby greatly reducing noise generated when the compressor 1 is turned on. And because the output torque of the compressor is smaller, the energy consumption of the compressor is also reduced.
Step 302: continuously acquiring second state information of the compressor 1 until the second state information meets a second preset condition;
in the starting process of the compressor 1, the motor in the compressor 1 starts to rotate until the rotation speed of the motor reaches the rotation speed required by the normal operation of the compressor 1, where the second preset condition may be that the duration time is greater than or equal to a second preset time value from the start of the compressor 1, and at this time, it may be considered that the rotation speed of the motor reaches the rotation speed required by the normal operation, or the rotation speed of the motor in the compressor 1 reaches the preset rotation speed value, and the like. When the second preset condition is satisfied, step 303 is executed, otherwise, step 302 is continuously executed.
Step 303: the pipe between the liquid storage device 9 and the exhaust port of the compressor 1 is controlled to be in an open state, and the liquid storage device 9 is controlled to discharge the refrigerant.
Opening a pipe 8 between the liquid storage 9 and an exhaust port of the compressor 1 and discharging the refrigerant, at which time the refrigerant stored in the liquid storage 9 flows into the pipe 8 at the time of shutdown; because the high-temperature and high-pressure refrigerant enters the liquid storage tank 4 when the refrigerator is stopped, the liquid storage tank 4 is likely to dissipate heat to the outside in the period of time when the refrigerator stops refrigerating, the temperature and the pressure of the refrigerant are reduced, and the refrigerant in the liquid storage tank 4 slowly flows into the pipeline 8, so that the pressure at the exhaust port of the compressor 1 is not increased suddenly, the pipeline 8 is not impacted greatly, and the noise during starting is further reduced. After step 302, the compressor 1 is in a normal operating state.
It can be seen that the operating state of the compressor is switched to: in a normal working state
Pre-off state
Out of service condition
Pre-open state
Normal operating condition … …
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the continuous operation time of the compressor 1 after the compressor 1 is started; the second state information satisfies a second preset condition, including: the continuous operation time is greater than or equal to a second preset time value.
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the rotating speed of a motor of the compressor 1; the second state information satisfies a second preset condition, including: and the rotating speed of the motor reaches a preset rotating speed value.
Preferably, the control liquid storage device 9 discharges the refrigerant, and includes: the liquid storage device 9 is controlled to discharge the refrigerant at a preset rate. The refrigerant is discharged at a predetermined rate, so that the refrigerant in the pipe 8 does not increase rapidly, and noise can be reduced well.
Preferably, the refrigerator further comprises the following modules:
the refrigerant suction module is started and used for controlling the second electromagnetic valve 22 to be in a closed state, controlling the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 to be in an open state and controlling the liquid storage device 9 to suck the refrigerant;
the first state judgment module is used for continuously acquiring first state information of the compressor 1 and/or the liquid storage device 9 until the first state information meets a first preset condition;
a refrigerant suction stopping module for controlling the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 to be in a closed state and controlling the second electromagnetic valve 22 to be in an open state;
a compressor shutdown module for shutting down the compressor 1.
Preferably, the refrigerator further comprises the following modules:
the compressor starting module is used for controlling the second electromagnetic valve 22 to be in an open state, controlling the pipeline 8 between the liquid storage device 9 and the exhaust port of the compressor 1 to be in a closed state, and starting the compressor 1;
the second state judgment module is used for continuously acquiring second state information of the compressor 1 until the second state information meets a second preset condition;
and the refrigerant discharging module is started and used for controlling a pipeline between the liquid storage device 9 and the exhaust port of the compressor 1 to be in an open state and controlling the liquid storage device 9 to discharge the refrigerant.
On the basis of the refrigerator provided by the first embodiment, the second embodiment provides an improved refrigerator, which comprises the following improvements,
as shown in fig. 1, the liquid storage device 9 includes: the device comprises a first electromagnetic valve 21 and a liquid storage tank 4, wherein the outlet and the inlet of the liquid storage tank 4 are the same; the port of the liquid storage tank 4 is communicated with the exhaust port of the compressor 1 through a first electromagnetic valve 21.
Here, when the first electromagnetic valve 21 is in the open state, the refrigerant can flow freely between the discharge port of the compressor 1 and the liquid storage device 9; when the first solenoid valve 21 is in the closed state, refrigerant cannot flow between the discharge port of the compressor 1 and the liquid storage device 9.
Preferably, the control module is further configured to: the opening and closing of the first electromagnetic valve 21 and the second electromagnetic valve 22 are controlled, and the opening and closing of the compressor 1 are controlled. Here, the control module may be a hardware device, or may be a software module or a combination of software and hardware. Here, the control module is able to send control commands to the second solenoid valve 22, the compressor 1 and the reservoir 9, so as to control these devices.
Preferably, the control module controls the second solenoid valve 22 to be in the open state when it is determined that the compressor 1 is in the normal operation state. Here, when the second electromagnetic valve 22 is in an open state, the refrigerant can flow among the compressor 1, the condenser 5, the capillary tube 6, and the evaporator 7, thereby performing cooling.
Preferably, the control module controls the first solenoid valve 21 to be in a closed state when it is determined that the compressor 1 is in a stop operation state.
Here, the control module can acquire the state information of the second electromagnetic valve 22, the compressor 1, the liquid storage device 9 and other components of the refrigerator, and judge the working state of the refrigerator through the state information. When the refrigerator is refrigerating, the compressor 1 is in a normal working state, the refrigerant flows in the pipe 8, at this time, the temperature of the storage compartment slowly decreases, and the second electromagnetic valve 22 is in an open state, so that the refrigerant flows in the pipe 8; at this time, the first electromagnetic valve 21 may be in an open state or a closed state.
The embodiment also provides a shutdown method of the refrigerator, which comprises the following steps:
step 401: controlling the second electromagnetic valve 22 to be in a closed state and the first electromagnetic valve 21 to be in an open state;
when the refrigerator is cooled, the compressor is in a normal operation state in which the temperature of the storage compartment is slowly decreased and the second electromagnetic valve 22 is in an open state. After a period of time, when the control module determines that the difference value between the temperature of the storage compartment and the preset temperature is smaller than a preset threshold value, the refrigerator needs to stop refrigerating, namely the compressor needs to be closed, and at the moment, the compressor enters a pre-closing state; first, the second electromagnetic valve 22 is closed, so that the first electromagnetic valve 21 is in an open state, and at this time, the high-temperature and high-pressure refrigerant cannot flow from the compressor 1 to the condenser 5, and since the compressor 1 is still operating, the compressor 1 continues to suck the low-pressure refrigerant, and compresses the high-temperature and high-pressure refrigerant, which is discharged from the discharge port, and the high-temperature and high-pressure refrigerant enters the accumulator 4 along the first electromagnetic valve 21, and it can be seen that the amount of the refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7, and the return port of the compressor 1 is continuously reduced at.
Step 402: continuously acquiring first state information of the compressor 1 and/or the liquid storage tank 4 until the first state information meets a first preset condition;
since the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7, and the return port of the compressor 1 is continuously decreased, the second control device needs to detect the first state information of the compressor 1 and/or the receiver tank 4 (for example, the amount of refrigerant stored in the receiver tank 9; the operation time of the compressor 1 since the execution of step 401, etc.) at any time, and when it is determined from the first state information that the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7, and the return port of the compressor 1 is decreased to a preset value, it is necessary to perform step 203.
Step 403: controlling the first electromagnetic valve 21 to be in a closed state and controlling the second electromagnetic valve 22 to be in an open state;
after the first electromagnetic valve 21 is closed, the refrigerant vapor of high temperature and high pressure having entered the receiver tank 4 is stored in the receiver tank 4; after the second solenoid valve 22 is opened, the refrigerant can flow along the compressor 1, the condenser 5, the capillary tube 6 and the evaporator 7, but the amount of the refrigerant is greatly reduced
Step 404: the compressor 1 is switched off.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a normal working state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the air return port of the compressor 1 is large, and the pressure at the air return port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a large load state, that is, the motor needs to output a large torque; it will be appreciated that when the motor is not operating, the motor shaft is in the first position, and when the motor is operating, the motor shaft is in the second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned off, the motor shaft needs to be returned from the second position to the first position, and the motor shaft is returned from the second position to the first position due to a large torque just due to the output of the motor, the generated vibration is also large, and the noise is also large; and the refrigerant stops flowing due to the sudden stop of the compressor, and a large amount of refrigerant in the pipe causes a large impact to the pipe and also generates a large noise. In the stopping method provided in the present embodiment, since the amount of refrigerant in the pipe is small, noise generated when the compressor 1 is turned off is greatly reduced. After the compressor 1 is turned off, the compressor 1 is in an off state.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage tank 4 includes: after the second electromagnetic valve 22 is controlled to be in a closed state and the first electromagnetic valve 21 is controlled to be in an open state, acquiring the continuous working time of the compressor; the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
It can be seen that, in step 404, when the compressor 1 is turned off, the amount of refrigerant in the pipe needs to be sufficiently small, and thus, the first preset time value may be set according to the long-term use experience of the refrigerator; i.e. after the compressor 1 has been operated for a first preset time value after closing the second solenoid valve, the amount of refrigerant in the conduit is sufficiently small.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage tank 4 includes: obtaining the quality value of the refrigerant in the liquid storage tank 4; the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
It can be seen that in step 404, upon turning off the compressor 1, the amount of refrigerant in the piping needs to be sufficiently small, and therefore, the first preset quality value can be set according to the long-term use experience of the refrigerator; therefore, after the second solenoid valve is closed, if the mass value of the refrigerant taken into the liquid storage device 9 reaches the first preset mass value, the amount of refrigerant remaining in the pipe is sufficiently small.
When the refrigerator stops cooling, the compressor 1 is in a stop state, the refrigerant does not flow in the pipe 8, at this time, the temperature of the storage compartment will slowly rise, and the pipe 8 between the liquid storage device 9 and the exhaust port of the compressor 1 is in a closed state, at this time, the second electromagnetic valve 22 is in an open state, and can also be in a closed state.
The embodiment also provides a starting method of the refrigerator, which comprises the following steps:
step 501: controlling the second electromagnetic valve 22 to be in an open state, and starting the compressor 1;
during the shutdown, the high-temperature and high-pressure refrigerant enters the liquid storage tank 4, and during the period of time when the refrigerator stops cooling, the liquid storage tank 4 may dissipate heat to the outside, and the temperature and the pressure of the refrigerant may decrease. After a period of time, when the control module determines that the difference value between the temperature of the storage compartment and the preset temperature is greater than the preset threshold value, the refrigerator needs to start refrigeration, namely the compressor 1 needs to be started, and at the moment, the compressor 1 enters a pre-starting state.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a closed state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the return port and the exhaust port of the compressor 1 is large, and the pressure at the return port and the exhaust port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a heavy-load state, namely, the motor needs to output a large torque; it will be appreciated that when the motor is not operating, the motor shaft is in the first position, and when the motor is operating, the motor shaft is in the second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned on, the motor shaft needs to be restored from the first position to the second position, and the vibration generated is large and the noise is large just because the torque of the output of the motor is large; and the refrigerant starts to flow due to the sudden start of the compressor, and the large amount of refrigerant in the pipe causes a large impact on the pipe and also generates a large noise. In the method for starting the refrigerator provided by the present invention, the amount of refrigerant in the pipe 8 is small, thereby greatly reducing noise generated when the compressor 1 is turned on. And because the output torque of the compressor is smaller, the energy consumption of the compressor is also reduced.
Step 502: continuously acquiring second state information of the compressor 1 until the second state information meets a second preset condition;
in the starting process of the compressor 1, the motor in the compressor 1 starts to rotate until the rotation speed of the motor reaches the rotation speed required by the normal operation of the compressor 1, where the second preset condition may be that the duration time is greater than or equal to a second preset time value from the start of the compressor 1, and at this time, it may be considered that the rotation speed of the motor reaches the rotation speed required by the normal operation, or the rotation speed of the motor in the compressor 1 reaches the preset rotation speed value, and the like. When the second preset condition is satisfied, step 503 is executed, otherwise, step 502 is continuously executed.
Step 503: the first electromagnetic valve 21 is controlled to be in an open state.
Opening the first electromagnetic valve 21, at which time the refrigerant stored in the receiver tank 4 at the time of shutdown flows into the pipe 8; because the high-temperature and high-pressure refrigerant steam enters the liquid storage tank 4 when the refrigerator is stopped, the liquid storage tank 4 is likely to dissipate heat to the outside in the period of time when the refrigerator stops refrigerating, the temperature and the pressure of the refrigerant steam are reduced, and the refrigerant in the liquid storage tank 4 slowly flows into the pipeline 8, so that the pressure at the exhaust port of the compressor 1 is not increased suddenly, the pipeline 8 is not impacted greatly, and the noise during starting is further reduced. After the first electromagnetic valve 21 is opened, the compressor 1 is in a normal operating state.
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the continuous operation time of the compressor 1 after the compressor 1 is started; the second state information satisfies a second preset condition, including: the continuous operation time is greater than or equal to a second preset time value.
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the rotating speed of a motor of the compressor 1; the second state information satisfies a second preset condition, including: and the rotating speed of the motor reaches a preset rotating speed value.
On the basis of the refrigerator provided by the first embodiment, the third embodiment provides an improved refrigerator, which comprises the following improvements,
as shown in fig. 6, the liquid storage device 9 includes: the compressor comprises a third electromagnetic valve 23, a fourth electromagnetic valve 24 and a liquid storage tank 4, wherein the inlet of the liquid storage tank 4 is communicated with the exhaust port of the compressor 1 through the third electromagnetic valve 23, and the outlet of the liquid storage tank 4 is communicated with the exhaust port of the compressor 1 through the fourth electromagnetic valve 24.
Here, the third electromagnetic valve 23 may adopt a check valve to ensure that the refrigerant can only flow into the liquid storage tank 4 through the third electromagnetic valve 23, but not flow out; the fourth solenoid valve 24 may be a check valve to ensure that the refrigerant can only flow out of the receiver 4 through the fourth solenoid valve 24, but not into the receiver. Here, when the third electromagnetic valve 23 is in an open state, the refrigerant can flow into the reservoir tank 4 from the discharge port of the compressor 1, and when closed, it cannot; when the fourth solenoid valve 24 is in the open state, refrigerant can flow from the receiver tank 4 into the discharge port of the compressor 1, and when closed, it cannot.
Preferably, the control module is further configured to: the opening and closing of the second electromagnetic valve 22, the third electromagnetic valve 23 and the fourth electromagnetic valve 24 are controlled, and the opening and closing of the compressor 1 are controlled. Here, the control module may be a hardware device, or may be a software module or a combination of software and hardware.
Preferably, the control module controls the second solenoid valve 22 to be in the open state when it is determined that the compressor 1 is in the normal operation state. Since the second solenoid valve 22 is in the open state, the refrigerant can circulate among the compression coil 1, the condenser 5, the capillary tube 6 and the evaporator 7, so that the refrigerator can normally cool.
Preferably, the control module controls the third solenoid valve 23 and the fourth solenoid valve 24 to be in a closed state when it is determined that the compressor 1 is in a stop operation state.
When the refrigerator is refrigerating, the compressor 1 is in a normal working state, the refrigerant flows in the pipe 8, at this time, the temperature of the storage compartment slowly decreases, and the second electromagnetic valve 22 is in an open state, so that the refrigerant flows in the pipe 8; at this time, the third electromagnetic valve 23 may be in an open state or a closed state.
The embodiment also provides a shutdown method of the refrigerator, which comprises the following steps:
step 701: controlling the second solenoid valve 22 in a closed state, the third solenoid valve 23 in an open state and the fourth solenoid valve 24 in a closed state;
when the refrigerator is cooled, the compressor is in a normal operation state in which the temperature of the storage compartment is slowly decreased and the second electromagnetic valve 22 is in an open state. After a period of time, when the control module determines that the difference value between the temperature of the storage compartment and the preset temperature is smaller than a preset threshold value, the refrigerator needs to stop refrigerating, namely the compressor needs to be closed, and at the moment, the compressor enters a pre-closing state; first, the second solenoid valve 22 is closed, so that the third solenoid valve 23 is in an open state and the fourth solenoid valve 24 is in a closed state, at this time, the high-temperature and high-pressure refrigerant cannot flow from the compressor 1 to the condenser 5, and since the compressor 1 is still running, the compressor 1 continues to suck the low-pressure refrigerant, compress the high-temperature and high-pressure refrigerant into the high-temperature and high-pressure refrigerant, and discharge the high-temperature and high-pressure refrigerant from the discharge port, and the high-temperature and high-pressure refrigerant enters the liquid storage tank 4 along the third solenoid valve 23, and it is seen that the amount of the refrigerant between the other end of the condenser 5, the.
Step 702: continuously acquiring first state information of the compressor 1 and/or the liquid storage tank 4 until the first state information meets a first preset condition;
since the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7 and the return port of the compressor 1 is continuously decreased, the third control means needs to detect the first state information of the compressor 1 and/or the receiver tank 4 at any time (e.g., the amount of refrigerant stored in the receiver tank 9; the operating time of the compressor 1 from the start of step 401, etc.), and when it is determined that the amount of refrigerant between the other end of the condenser 5, the capillary tube 6, the evaporator 7 and the return port of the compressor 1 is decreased to a preset value based on the first state information, step 703 needs to be performed; otherwise, the process continues to step 202.
Step 703: the third electromagnetic valve 23 and the fourth electromagnetic valve 24 are controlled to be in a closed state, and the second electromagnetic valve 22 is controlled to be in an open state;
after the third electromagnetic valve 23 and the fourth electromagnetic valve 24 are closed, the refrigerant vapor with high temperature and high pressure which has entered the liquid storage tank 4 is stored in the liquid storage tank 4; after the second solenoid valve 22 is opened, the refrigerant can flow along the compressor 1, the condenser 5, the capillary tube 6 and the evaporator 7, but the amount of the refrigerant is greatly reduced
Step 704: the compressor 1 is switched off.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a normal working state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the air return port of the compressor 1 is large, and the pressure at the air return port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a large load state, that is, the motor needs to output a large torque; it will be appreciated that when the motor is not operating, the motor shaft is in the first position, and when the motor is operating, the motor shaft is in the second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned off, the motor shaft needs to be returned from the second position to the first position, and the motor shaft is returned from the second position to the first position due to a large torque just due to the output of the motor, the generated vibration is also large, and the noise is also large; and the refrigerant stops flowing due to the sudden stop of the compressor, and a large amount of refrigerant in the pipe causes a large impact to the pipe and also generates a large noise. In the stopping method provided in the present embodiment, since the amount of refrigerant in the pipe is small, noise generated when the compressor 1 is turned off is greatly reduced. After the compressor 1 is turned off, the compressor 1 is in an off state.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage tank 4 includes: after controlling the second electromagnetic valve 22 to be in a closed state, the third electromagnetic valve 23 to be in an open state and the fourth electromagnetic valve 24 to be in a closed state, acquiring the continuous working time of the compressor; the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
It can be seen that, in step 704, the amount of refrigerant in the pipe needs to be sufficiently small when the compressor 1 is turned off, and thus, the first preset time value may be set according to the long-term use experience of the refrigerator; i.e. after the compressor 1 has been operated for a first preset time value after closing the second solenoid valve, the amount of refrigerant in the conduit is sufficiently small.
Preferably, the acquiring the first state information of the compressor 1 and/or the liquid storage tank 4 includes: obtaining the quality value of the refrigerant in the liquid storage tank 4; the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
It can be seen that in step 704, the amount of refrigerant in the piping needs to be sufficiently small when the compressor 1 is turned off, and therefore, the first preset mass value can be set according to the long-term use experience of the refrigerator; therefore, after the second solenoid valve is closed, if the mass value of the refrigerant taken into the liquid storage device 9 reaches the first preset mass value, the amount of refrigerant remaining in the pipe is sufficiently small.
When the refrigerator stops cooling, the compressor 1 is in a stop state, the refrigerant does not flow in the pipe 8, at this time, the temperature of the storage compartment will slowly rise, and the pipe 8 between the liquid storage device 9 and the exhaust port of the compressor 1 is in a closed state, at this time, the second electromagnetic valve 22 is in an open state, and can also be in a closed state.
The embodiment also provides a starting method of the refrigerator, which comprises the following steps:
step 801: controlling the second electromagnetic valve 22 to be in an open state, and starting the compressor 1;
during the shutdown, the high-temperature and high-pressure refrigerant enters the liquid storage tank 4, and during the period of time when the refrigerator stops cooling, the liquid storage tank 4 may dissipate heat to the outside, and the temperature and the pressure of the refrigerant may decrease. After a period of time, when the control module determines that the difference value between the temperature of the storage compartment and the preset temperature is greater than the preset threshold value, the refrigerator needs to start refrigeration, namely the compressor 1 needs to be started, and at the moment, the compressor 1 enters a pre-starting state.
In the years of work of the inventor, it is found that in the existing refrigerator, when the compressor 1 is in a closed state, the amount of refrigerant in the pipeline 8 is large, further, the density of the refrigerant at the return port and the exhaust port of the compressor 1 is large, and the pressure at the return port and the exhaust port is large, so that in order to ensure that the compressor 1 sucks the refrigerant normally, the motor in the compressor 1 needs to operate in a heavy-load state, namely, the motor needs to output a large torque; it will be appreciated that when the motor is not operating, the motor shaft is in the first position, and when the motor is operating, the motor shaft is in the second position, and the first position is not equal to the second position; therefore, when the compressor 1 is turned on, the motor shaft needs to be restored from the first position to the second position, and the vibration generated is large and the noise is large just because the torque of the output of the motor is large; and the refrigerant starts to flow due to the sudden start of the compressor, and the large amount of refrigerant in the pipe causes a large impact on the pipe and also generates a large noise. In the method for starting the refrigerator provided by the present invention, the amount of refrigerant in the pipe 8 is small, thereby greatly reducing noise generated when the compressor 1 is turned on. And because the output torque of the compressor is smaller, the energy consumption of the compressor is also reduced.
Step 802: continuously acquiring second state information of the compressor 1 until the second state information meets a second preset condition;
in the starting process of the compressor 1, the motor in the compressor 1 starts to rotate until the rotation speed of the motor reaches the rotation speed required by the normal operation of the compressor 1, where the second preset condition may be that the duration time is greater than or equal to a second preset time value from the start of the compressor 1, and at this time, it may be considered that the rotation speed of the motor reaches the rotation speed required by the normal operation, or the rotation speed of the motor in the compressor 1 reaches the preset rotation speed value, and the like. When the second preset condition is satisfied, step 803 is executed, otherwise, step 802 is continuously executed.
Step 803: the fourth solenoid valve 24 is controlled to be in an open state.
Opening the fourth solenoid valve 24, at which time the refrigerant stored in the receiver tank 4 at the time of shutdown flows into the pipe 8; because the high-temperature and high-pressure refrigerant steam enters the liquid storage tank 4 when the refrigerator is stopped, the liquid storage tank 4 is likely to dissipate heat to the outside in the period of time when the refrigerator stops refrigerating, the temperature and the pressure of the refrigerant steam are reduced, and the refrigerant in the liquid storage tank 4 slowly flows into the pipeline 8, so that the pressure at the exhaust port of the compressor 1 is not increased suddenly, the pipeline 8 is not impacted greatly, and the noise during starting is further reduced. After opening the fourth solenoid valve 24, the compressor 1 is in a normal operating state.
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the continuous operation time of the compressor 1 after the compressor 1 is started; the second state information satisfies a second preset condition, including: the continuous operation time is greater than or equal to a second preset time value.
Preferably, the acquiring the second state information of the compressor 1 includes: acquiring the rotating speed of a motor of the compressor 1; the second state information satisfies a second preset condition, including: and the rotating speed of the motor reaches a preset rotating speed value.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for stopping a refrigerator is characterized in that,
the refrigerator includes: the device comprises a compressor, a condenser, a capillary tube, an evaporator, a liquid storage device and a second electromagnetic valve; the liquid storage device is communicated with an exhaust port of the compressor through a pipeline, and can suck and store a refrigerant, discharge the stored refrigerant and open and close the pipeline between the liquid storage device and the exhaust port of the compressor; the first end of the second electromagnetic valve is communicated with an exhaust port of the compressor through a pipeline, and the second end of the second electromagnetic valve is communicated with one end of the condenser; the other end of the condenser, the capillary tube, the evaporator and the return air port of the compressor are communicated in series through pipelines;
the shutdown method comprises the following steps:
controlling the second electromagnetic valve to be in a closed state, controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in an open state, and controlling the liquid storage device to suck a refrigerant;
continuously acquiring first state information of a compressor and/or a liquid storage device until the first state information meets a first preset condition;
controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in a closed state, controlling the second electromagnetic valve to be in an open state, and enabling the refrigerant to flow along the compressor, the condenser, the capillary tube and the evaporator;
the compressor is turned off.
2. The stopping method of a refrigerator according to claim 1,
the acquiring first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state and a pipeline between the liquid storage device and an exhaust port of the compressor is controlled to be in an open state, the continuous working time of the compressor is obtained;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than or equal to a first preset time value, a first preset condition is met.
3. The stopping method of a refrigerator according to claim 1,
the acquiring first state information of the compressor and/or the liquid storage device includes: acquiring the quality value of the refrigerant in the liquid storage device;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than or equal to a first preset quality value, a first preset condition is met.
4. The stopping method of a refrigerator according to claim 1,
the liquid storage device comprises: the outlet and the inlet of the liquid storage tank are the same; the port of the liquid storage tank is communicated with the exhaust port of the compressor through a first electromagnetic valve;
the pipeline between the control stock solution device and the gas vent of compressor is in the open mode, and controls stock solution device suction refrigerant, includes: controlling the first electromagnetic valve to be in an open state;
control the pipeline between the gas vent of stock solution device and compressor and be in the closed condition, include: and controlling the first electromagnetic valve to be in a closed state.
5. The stopping method of a refrigerator according to claim 4,
the acquiring first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state and the first electromagnetic valve is controlled to be in an open state, acquiring the continuous working time of the compressor;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
6. The stopping method of a refrigerator according to claim 4,
the acquiring first state information of the compressor and/or the liquid storage device includes: obtaining a quality value of refrigerant in the liquid storage tank;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
7. The stopping method of a refrigerator according to claim 1,
the liquid storage device comprises: the inlet of the liquid storage tank is communicated with the exhaust port of the compressor through the third electromagnetic valve, and the outlet of the liquid storage tank is communicated with the exhaust port of the compressor through the fourth electromagnetic valve;
the pipeline between the control stock solution device and the gas vent of compressor is in the open mode, and controls stock solution device suction refrigerant, includes: controlling the third electromagnetic valve to be in an open state and the fourth electromagnetic valve to be in a closed state;
control the pipeline between the gas vent of stock solution device and compressor and be in the closed condition, include: and controlling the third electromagnetic valve and the fourth electromagnetic valve to be in a closed state.
8. The stopping method of a refrigerator according to claim 7,
the acquiring first state information of the compressor and/or the liquid storage device includes: after the second electromagnetic valve is controlled to be in a closed state, the third electromagnetic valve is controlled to be in an open state and the fourth electromagnetic valve is controlled to be in a closed state, the continuous working time of the compressor is obtained;
the first state information satisfies a first preset condition, including: and when the continuous working time is determined to be greater than a first preset time value, a first preset condition is met.
9. The stopping method of a refrigerator according to claim 7,
the acquiring first state information of the compressor and/or the liquid storage device includes: obtaining a quality value of refrigerant in the liquid storage tank;
the first state information satisfies a first preset condition, including: when the quality value is determined to be greater than a first preset quality value, a first preset condition is met.
10. A stop device of a refrigerator is characterized in that,
the refrigerator includes: the device comprises a compressor, a condenser, a capillary tube, an evaporator, a liquid storage device and a second electromagnetic valve; the liquid storage device is communicated with an exhaust port of the compressor through a pipeline, and can suck and store a refrigerant, discharge the stored refrigerant and open and close the pipeline between the liquid storage device and the exhaust port of the compressor; the first end of the second electromagnetic valve is communicated with an exhaust port of the compressor through a pipeline, and the second end of the second electromagnetic valve is communicated with one end of the condenser; the other end of the condenser, the capillary tube, the evaporator and the return air port of the compressor are communicated in series through pipelines;
the shutdown device includes:
the refrigerant suction module is started and used for controlling the second electromagnetic valve to be in a closed state, controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in an open state and controlling the liquid storage device to suck the refrigerant;
the first state judgment module is used for continuously acquiring first state information of the compressor and/or the liquid storage device until the first state information meets a first preset condition;
the refrigerant suction stopping module is used for controlling a pipeline between the liquid storage device and an exhaust port of the compressor to be in a closed state and controlling the second electromagnetic valve to be in an open state, and the refrigerant flows along the compressor, the condenser, the capillary tube and the evaporator;
a compressor shutdown module to shutdown the compressor.
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| CN115993011A (en) * | 2022-12-13 | 2023-04-21 | 珠海格力电器股份有限公司 | Refrigerating system for refrigerator and refrigerator |
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| CN103836773A (en) * | 2012-11-21 | 2014-06-04 | 美的集团股份有限公司 | Multi-split air conditioning system and shutdown noise control method thereof |
| CN103307819A (en) * | 2013-05-21 | 2013-09-18 | 澳柯玛股份有限公司 | Refrigerating system and method capable of regulating and controlling cold outputting capacity of compressor |
| CN105091231A (en) * | 2015-08-11 | 2015-11-25 | 青岛海尔空调器有限总公司 | Air conditioner and method for switching air conditioner from refrigeration mode to constant-temperature dehumidification mode |
| CN106766416A (en) * | 2016-12-26 | 2017-05-31 | 广东美的制冷设备有限公司 | Determine frequency machine regulating system and its adjusting method and fixed frequency air conditioner machine |
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