CN107166869B - Fault detection method and computer storage medium for refrigerator air conditioning system - Google Patents
Fault detection method and computer storage medium for refrigerator air conditioning system Download PDFInfo
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- CN107166869B CN107166869B CN201710548067.2A CN201710548067A CN107166869B CN 107166869 B CN107166869 B CN 107166869B CN 201710548067 A CN201710548067 A CN 201710548067A CN 107166869 B CN107166869 B CN 107166869B
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- 238000001514 detection method Methods 0.000 title claims abstract description 67
- 238000004378 air conditioning Methods 0.000 title claims abstract description 36
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- 238000004320 controlled atmosphere Methods 0.000 claims description 22
- 239000012528 membrane Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 10
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a fault detection method of a refrigerator air conditioning system and a computer storage medium. The fault detection method of the refrigerator air conditioning system comprises the following steps: detecting the actual rotating speed of the vacuum pump through a rotating speed detection circuit; judging whether the actual rotating speed of the vacuum pump is within a pre-acquired normal rotating speed range of the vacuum pump; and if not, determining that the gas regulating system has a fault and outputting a corresponding fault code according to the actual rotating speed of the vacuum pump, wherein the fault code comprises a vacuum pump fault code, an air leakage fault code and an air blockage fault code. According to the scheme provided by the invention, the fault of the gas regulating system can be quickly detected in a simple manner, and the specific type of the fault is determined, so that a prerequisite condition is provided for follow-up fault processing, the gas atmosphere of a fresh-keeping space cannot meet the storage requirement of food materials due to the fact that the gas regulating system runs for a long time in a fault state is avoided, the working reliability of the gas regulating system is effectively improved, the storage effect of the food materials is improved, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a fault detection method and a computer storage medium for a refrigerator air conditioning system.
Background
With the social development, the living standard of people is improved day by day and the pace of life of people is faster and faster, people often buy a large amount of articles to place in various refrigerators, but for leaf vegetables and fruits, the low temperature in the storage space of the refrigerator can not only cause the skin of the foods to have wrinkling and spot marks, but also influence the original taste and nutrition of the foods.
In the preservation technology of the refrigerator, oxygen is closely related to the oxidation and respiration of food in the refrigerator. The slower the respiration of the food, the lower the oxidation of the food and the longer the preservation time. The oxygen content in the air is reduced, and the fresh-keeping effect on food is obvious. At present, in order to reduce the oxygen content in the refrigerator, the prior art generally uses the modified atmosphere preservation technology to perform low-oxygen preservation.
Modified atmosphere technology generally refers to technology for prolonging the storage life of food by adjusting the gas atmosphere (gas component ratio or gas pressure) of a closed space where stored objects are located, and the basic principle is as follows: in a certain closed space, a gas atmosphere different from normal air components is obtained through various regulation modes so as to inhibit physiological and biochemical processes and activities of microorganisms which cause the putrefaction and deterioration of stored objects (generally food materials). In particular, in the present application, the modified atmosphere preservation discussed will be specific to modified atmosphere preservation techniques that regulate the proportions of the gas components.
As is known to those skilled in the art, the normal air composition includes (in volume percent, the same applies hereinafter): about 78% nitrogen, about 21% oxygen, about 0.939% noble gases (helium, neon, argon, krypton, xenon, radon), 0.031% carbon dioxide, and 0.03% other gases and impurities (e.g., ozone, nitric oxide, nitrogen dioxide, water vapor, etc.). In the field of modified atmosphere preservation, nitrogen-rich and oxygen-poor preservation gas atmosphere is obtained by filling nitrogen-rich gas into a closed space to reduce oxygen content. Here, nitrogen-rich gas is understood by those skilled in the art to mean a gas having a nitrogen content exceeding that of the normal air, for example, the nitrogen content therein may be 95% to 99%, or even higher; the nitrogen-rich and oxygen-poor fresh-keeping gas atmosphere refers to a gas atmosphere in which the nitrogen content exceeds the nitrogen content in the normal air and the oxygen content is lower than the oxygen content in the normal air.
In the prior art, a sealed space is often arranged in a storage space to serve as a fresh-keeping chamber, and the gas atmosphere of the fresh-keeping chamber is adjusted through a gas adjusting system. However, the working reliability of the existing gas conditioning system cannot be guaranteed, the failure of the gas conditioning system cannot be found in time, the storage effect of food materials in the fresh-keeping chamber is easily affected, and the use experience of a user is reduced.
Disclosure of Invention
One object of the present invention is to improve the operational reliability of a refrigerator air conditioning system.
The invention further aims to prolong the service life of the air conditioning system and improve the storage effect of food materials in the refrigerator.
Particularly, the invention provides a fault detection method of a refrigerator air conditioning system, wherein a refrigerator comprises a refrigerator body, a storage space and a compressor bin are limited in the refrigerator body, and a fresh-keeping space is arranged in the storage space; an atmosphere control system comprising an atmosphere control membrane module disposed in the fresh-keeping space and a vacuum pump disposed in the compressor bin, the atmosphere control system configured to control a gas atmosphere within the fresh-keeping space; and a rotation speed detection circuit connected to the vacuum pump and configured to detect a rotation speed of the vacuum pump, and the fault detection method includes: detecting the actual rotating speed of the vacuum pump through a rotating speed detection circuit; judging whether the actual rotating speed of the vacuum pump is within a pre-acquired normal rotating speed range of the vacuum pump; and if not, determining that the gas regulating system has a fault and outputting a corresponding fault code according to the actual rotating speed of the vacuum pump, wherein the fault code comprises a vacuum pump fault code, an air leakage fault code and an air blockage fault code.
Optionally, the normal rotation speed range of the vacuum pump is greater than or equal to the second rotation speed and less than or equal to the third rotation speed, and the step of outputting the corresponding fault code according to the actual rotation speed of the vacuum pump includes: outputting a fault code of the vacuum pump when the actual rotating speed of the vacuum pump is less than the first rotating speed or greater than the fourth rotating speed; outputting a gas blockage fault code when the actual rotating speed of the vacuum pump is greater than or equal to the first rotating speed and less than the second rotating speed; and outputting a gas leakage fault code when the actual rotating speed of the vacuum pump is greater than the third rotating speed and less than or equal to the fourth rotating speed, wherein the first rotating speed is less than the second rotating speed and less than the third rotating speed and less than the fourth rotating speed.
Optionally, when the fault code of the vacuum pump is output, the vacuum pump is controlled to stop, and the stop times are recorded.
Optionally, after the step of recording the number of the shutdown, the method further comprises: judging whether the shutdown times are less than the preset times or not; and if so, restarting the vacuum pump after stopping for the first preset time, and detecting the actual rotating speed of the vacuum pump to detect the fault again.
Optionally, when the number of times of shutdown is greater than or equal to the preset number of times, restarting the vacuum pump after obtaining the operation of starting the fresh-keeping space by the user, and detecting the actual rotation speed of the vacuum pump to perform fault detection again.
Optionally, after the operation of starting the fresh keeping space by the user is obtained, restarting the vacuum pump, and when the fault code of the vacuum pump is still output, prohibiting the vacuum pump from restarting, and outputting a fault prompt signal.
Alternatively, when a gas leakage fault code or a gas blockage fault code is output, the vacuum pump is controlled to stop, and the stop time is recorded.
Optionally, the step of controlling the vacuum pump to stop further comprises: and restarting the vacuum pump in a pre-acquired user common time period, and detecting the actual rotating speed of the vacuum pump to perform fault detection again.
Optionally, when the vacuum pump is restarted in a pre-acquired user common time period and the air leakage fault code or the air blockage fault code is still output, acquiring current time and comparing the current time with the downtime, judging whether the fault duration is greater than or equal to a second preset time length, if so, resetting the normal rotating speed range according to the actual rotating speed of the vacuum pump at the current time, and clearing the air leakage fault code or the air blockage fault code.
According to another aspect of the present invention, there is also provided a computer storage medium, wherein a computer program is stored, and the computer program is executed to cause an apparatus of the computer storage medium to perform any one of the above-mentioned fault detection methods for a refrigerator air conditioning system.
The invention relates to a fault detection method of a refrigerator controlled atmosphere system and a computer storage medium, wherein the fault detection method of the refrigerator controlled atmosphere system detects the actual rotating speed of a vacuum pump through a rotating speed detection circuit; judging whether the actual rotating speed of the vacuum pump is within a pre-acquired normal rotating speed range of the vacuum pump; and if not, determining that the gas conditioning system has a fault and outputting a corresponding fault code according to the actual rotating speed of the vacuum pump, wherein the fault code comprises a vacuum pump fault code, an air leakage fault code and an air blockage fault code, and can quickly detect the fault of the gas conditioning system and determine the specific type of the fault in a simple mode, so that a prerequisite condition is provided for follow-up fault handling, the gas atmosphere in a fresh-keeping space cannot meet the storage requirement of food materials due to long-term operation of the gas conditioning system in a fault state is avoided, the working reliability of the gas conditioning system is effectively improved, the storage effect of the food materials is improved, and the use experience of a user is improved.
Further, the fault detection method and the computer storage medium of the refrigerator controlled atmosphere system of the invention output the fault code of the vacuum pump when the actual rotating speed of the vacuum pump is less than the first rotating speed or greater than the fourth rotating speed; outputting a gas blockage fault code when the actual rotating speed of the vacuum pump is greater than or equal to the first rotating speed and less than the second rotating speed; when the actual rotating speed of the vacuum pump is greater than the third rotating speed and less than or equal to the fourth rotating speed, the air leakage fault code is output, and different fault codes correspond to different control flows, so that different faults of the air conditioning system can be solved, and the service life of the air conditioning system is effectively prolonged.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural diagram of a refrigerator to which a fault detection method of a refrigerator controlled atmosphere system according to one embodiment of the invention is applied;
fig. 2 is a schematic structural view of the refrigerator of fig. 1 viewed from another angle;
fig. 3 is a schematic diagram of a fault detection method of a refrigerator controlled atmosphere system according to one embodiment of the invention;
fig. 4 is a detailed flowchart of a fault detection method of a refrigerator controlled atmosphere system according to one embodiment of the invention;
fig. 5 is a detailed flowchart of a fault detection method of a refrigerator controlled atmosphere system according to another embodiment of the invention; and
FIG. 6 is a schematic diagram of a computer storage medium according to one embodiment of the invention.
Detailed Description
Fig. 1 is a schematic configuration diagram of a refrigerator 100 to which a fault detection method of a refrigerator atmosphere control system according to an embodiment of the present invention is applied, and fig. 2 is a schematic configuration diagram of the refrigerator 100 of fig. 1 viewed from another angle. The refrigerator 100 in this embodiment can achieve modified atmosphere for the fresh-keeping space in the storage space to meet the storage requirement of the articles in the fresh-keeping space. The refrigerator 100 may generally include: the device comprises a box body 10, a gas conditioning system and a rotating speed detection circuit.
Wherein the cabinet 10 defines therein a storage space 101 and a compressor compartment. The number and structure of the storage spaces 101 may be configured as required, and fig. 1 shows the case of a first space, a second space and a third space which are sequentially arranged from top to bottom; the space can be configured into a refrigerating space, a freezing space, a temperature changing space or a fresh keeping space according to different purposes. Each storage space may be divided into a plurality of storage regions by a partition plate, and the articles may be stored by a rack or a drawer. A fresh-keeping space is provided in the storage space of the refrigerator 100 of the present embodiment.
The refrigerator 100 may further include a door 20 disposed at a front surface of the cabinet 10 to enclose the storage space 101. The door bodies can be arranged corresponding to the storage spaces, namely, each storage space corresponds to one or more door bodies. The number of the storage spaces and the door bodies and the functions of the storage spaces can be actually selected according to specific conditions. The refrigerator 100 of this embodiment corresponds to the first space, the second space, and the third space that are sequentially arranged from top to bottom, and is provided with the first door body, the second door body, and the third door body, respectively. The door body can be pivotally arranged on the front surface of the box body 10, and can be opened in a drawer mode to achieve a drawer-type storage space, wherein the drawer-type storage space is often provided with a metal sliding rail, so that the effect of opening and closing the drawer is ensured to be gentle, and the noise can be reduced. The refrigerator 100 of the present embodiment has the first space opened in a pivoting manner, and the second and third spaces opened in a drawer manner. The above door opening modes are only examples and are not limiting to the invention. In other embodiments, the opening mode of each storage space can be different.
The atmosphere control system comprises an atmosphere control membrane assembly arranged in the fresh-keeping space and a vacuum pump arranged in the compressor bin, and is configured to regulate the gas atmosphere in the fresh-keeping space. Specifically, the modified atmosphere modules are arranged in the fresh-keeping space, the surrounding space of the modified atmosphere modules is communicated with the fresh-keeping space, each modified atmosphere module is provided with at least one modified atmosphere film and one oxygen-enriched gas collecting cavity, and the modified atmosphere modules are configured to enable oxygen in airflow in the surrounding space of the modified atmosphere modules to penetrate through the modified atmosphere film more than nitrogen in the airflow to enter the oxygen-enriched gas collecting cavity. The vacuum pump is arranged in the compressor bin, and the inlet end of the vacuum pump is communicated with the oxygen-enriched gas collecting cavity in a controlled manner.
The refrigerator 100 of the embodiment may be configured such that the sealed drawer defines a fresh-keeping space, and a modified atmosphere module may be disposed inside the fresh-keeping space, and the internal atmosphere of the fresh-keeping space is adjusted by a vacuum pump. In some alternative embodiments, the plurality of fresh food spaces may also be defined by a sealed box, a sealed can, a sealed box, or the like. The case 10 may include an inner container defining a storage space therein. The sealed drawer includes: the drawer cylinder is provided with a forward opening, is fixed on the inner container and is internally limited with a fresh-keeping space; and a drawer body 13 slidably mounted within the drawer cylinder to operatively withdraw from and insert into the drawer cylinder outwardly from the forward opening of the drawer cylinder. The drawer cylinder can be arranged at the lower part of the inner container, and in other embodiments, the drawer cylinder can also be arranged at the middle part or the upper part of the inner container. In this embodiment, the inner container and the drawer cylinder may be integrally formed, or may be separately formed and then installed.
In some embodiments of the invention, the modified atmosphere component may be disposed on the drawer cylinder, preferably on the top wall of the drawer cylinder. Specifically, a containing cavity communicated with the fresh-keeping space is arranged in the top wall of the drawer cylinder body to contain the gas regulating membrane component. In this embodiment, the modified atmosphere membrane is an oxygen-rich membrane, and the modified atmosphere membrane module may be an oxygen-rich membrane module. The oxygen-enriched membrane component utilizes the difference of permeation rates of component gases in the air when the component gases permeate through the oxygen-enriched membrane, and oxygen in the air preferentially passes through the oxygen-enriched membrane to obtain oxygen under the driving of pressure difference. In other embodiments, the modified atmosphere membrane may also be a hollow fiber membrane, and the modified atmosphere membrane module may be a hollow fiber membrane module, and the hollow fiber membrane module utilizes the difference of the transmittance of each component gas in the air through the hollow fiber membrane, and since the oxygen molecules are smaller than the nitrogen molecules, the oxygen molecules preferentially permeate through the hollow fiber membrane to obtain oxygen.
The vacuum pump is arranged in the compressor bin, and the inlet end of the vacuum pump is communicated with the oxygen-enriched gas collecting cavity in a controlled manner. Since more oxygen in the gas flow around the modified atmosphere module permeates the modified atmosphere membrane into the oxygen-enriched gas collection chamber than nitrogen in the gas flow, the gas in the oxygen-enriched gas collection chamber is generally oxygen-enriched gas.
Under the condition that the modified atmosphere film is an oxygen-enriched film, the vacuum pump exhausts air outwards through a pipeline communicated with the oxygen-enriched air collecting cavity of the fresh-keeping space, so that the pressure of the oxygen-enriched air collecting cavity is smaller than that of the fresh-keeping space. That is to say, when the vacuum pump is exhausting outwards, the air in the fresh-keeping space can flow to the oxygen-enriched membrane component, and under the action of the oxygen-enriched membrane component, part or all of the oxygen in the air in the fresh-keeping space enters the oxygen-enriched gas collecting cavity, and then is exhausted out of the fresh-keeping space through the pipeline and the vacuum pump, so that the nitrogen-enriched and oxygen-depleted gas atmosphere in the fresh-keeping space is obtained to be favorable for keeping food fresh. The vacuum pump can be installed in the seal box and installed in the compressor bin through the installation bottom plate. The vacuum pump is arranged in the compressor bin, so that the space of the compressor bin can be fully utilized, and other places are not additionally occupied, so that the additional volume of the refrigerator cannot be increased, and the structure of the refrigerator can be compact.
And the rotating speed detection circuit is connected with the vacuum pump and is configured to detect the rotating speed of the vacuum pump. There is a range of normal rotational speeds of the vacuum pump, which may be, for example, [ S1-x, S1+ x ]. Wherein, S1 can be regarded as a reference rotation speed, and if it is detected that the actual rotation speed of the vacuum pump is within a certain range (for example, x) from the reference rotation speed, that is, the actual rotation speed of the vacuum pump is in the interval [ S1-x, S1+ x ], it can be determined that the operation state of the air-conditioning system is normal and no fault occurs. It should be noted that, the whole operation stage of the vacuum pump can be divided into: the method comprises three stages of starting, stabilizing and stopping, wherein generally, a rotating speed detection circuit detects the rotating speed of the vacuum pump when the vacuum pump is in the stabilizing stage, namely, the normal rotating speed range of the vacuum pump is obtained by the rotating speed detection circuit in the process of stabilizing the operation of the vacuum pump.
Fig. 3 is a schematic diagram of a fault detection method of a refrigerator controlled atmosphere system according to one embodiment of the invention. The fault detection method of the refrigerator air conditioning system is suitable for the refrigerator 100 of the embodiment, and can detect the fault of the air conditioning system of the refrigerator 100. As shown in fig. 3, the fault detection method of the refrigerator air conditioning system comprises the following steps:
step S302, detecting the actual rotating speed of the vacuum pump through a rotating speed detection circuit;
step S304, judging whether the actual rotating speed of the vacuum pump is in the normal rotating speed range of the vacuum pump acquired in advance, and if not, executing step S306;
and S306, determining that the air conditioning system has a fault and outputting a corresponding code fault according to the actual rotating speed of the vacuum pump.
In the above steps, since the normal rotation speed range of the vacuum pump is obtained by the rotation speed detection circuit in advance during the smooth operation of the vacuum pump, the actual rotation speed of the vacuum pump in step S302 is also detected by the rotation speed detection circuit when the vacuum pump is in the smooth operation stage. The scientific reasonability of the process of comparing the actual rotating speed with the normal rotating speed range can be ensured, and the accuracy of detecting faults is improved.
The normal rotation speed range of the vacuum pump in step S304 may be equal to or greater than the second rotation speed and equal to or less than the third rotation speed. For example, the normal speed range of the vacuum pump may be the interval [ S1-x, S1+ x ], i.e., the second speed is S1-x and the third speed is S1+ x. If the actual rotation speed of the vacuum pump is not within the normal rotation speed range, step S306 may be executed. If the actual rotating speed of the vacuum pump is in the normal rotating speed range, the operation of the air conditioning system is normal, no fault exists, the air conditioning system can work normally, and the gas atmosphere of the fresh-keeping space is adjusted.
The step of outputting the corresponding code fault according to the actual rotation speed of the vacuum pump in step S306 may include: outputting a fault code of the vacuum pump when the actual rotating speed of the vacuum pump is less than the first rotating speed or greater than the fourth rotating speed; outputting a gas blockage fault code when the actual rotating speed of the vacuum pump is greater than or equal to the first rotating speed and less than the second rotating speed; and outputting a gas leakage fault code when the actual rotating speed of the vacuum pump is greater than the third rotating speed and less than or equal to the fourth rotating speed, wherein the first rotating speed is less than the second rotating speed and less than the third rotating speed and less than the fourth rotating speed. In one specific embodiment, the first speed may be S1-y, the second speed may be S1-x, the third speed may be S1+ x, and the fourth speed may be S1+ y, where y is greater than x, and in general, the first speed is less than the second speed and less than the third speed and less than the fourth speed.
Because the prior art at present often can not discover in time that the air conditioning system breaks down, can lead to the air conditioning system to operate in the fault state for a long time and lead to life to shorten by a wide margin. Even if the fault of the gas conditioning system is detected, in the prior art, whether the gas conditioning system normally works is judged only by acquiring the gas atmosphere condition in the fresh-keeping space, the fault detection process is slow and inefficient, and the fault type of the gas conditioning system cannot be accurately known, so that necessary technical support cannot be provided for follow-up fault treatment.
The fault detection method for the refrigerator controlled atmosphere system can simply and rapidly detect the fault of the controlled atmosphere system and determine the specific type of the fault in a mode of detecting the rotating speed of the vacuum pump, thereby providing a prerequisite condition for follow-up fault processing, avoiding the gas atmosphere of a fresh-keeping space from being incapable of meeting the storage requirement of food materials due to long-term operation of the controlled atmosphere system in a fault state, effectively improving the working reliability of the controlled atmosphere system, improving the storage effect of the food materials and improving the use experience of users.
On the basis of the previous embodiment, fig. 4 is a detailed flowchart of a fault detection method of a refrigerator air conditioning system according to an embodiment of the invention. The method for detecting the fault of the refrigerator controlled atmosphere system of the embodiment is executed when the fault code of the vacuum pump is output in step S306 of the embodiment, and comprises the following steps:
step S402, outputting a vacuum pump fault code;
step S404, controlling the vacuum pump to stop;
step S406, restarting the vacuum pump after stopping for a first preset time, and detecting the actual rotating speed of the vacuum pump to perform fault detection again;
step S408, judging whether a vacuum pump fault code is output, if so, executing step S410, and if not, executing step S424;
step S410, controlling the vacuum pump to stop;
step S412, restarting the vacuum pump after stopping for a first preset time, and detecting the actual rotating speed of the vacuum pump to perform fault detection again;
step S414, determining whether to output a vacuum pump fault code, if yes, executing step S416, and if no, executing step S424;
step S416, controlling the vacuum pump to stop;
step S418, restarting the vacuum pump after obtaining the operation of opening the fresh-keeping space by the user, and detecting the actual rotating speed of the vacuum pump to perform fault detection again;
step S420, determining whether to output a vacuum pump fault code, if yes, performing step S422, and if no, performing step S424;
step S422, forbidding the vacuum pump to restart, outputting a fault prompt signal and executing step S426;
step S424 clears the fault code.
The method for detecting the fault of the refrigerator controlled atmosphere system of the embodiment is executed when the vacuum pump fault code is output in step S306 of the above embodiment, that is, the step S402 is to output the vacuum pump fault code for the first time.
The number of shutdowns may also be recorded after controlling the vacuum pump to shut down in step S404. And if the shutdown frequency is less than the preset frequency, restarting the vacuum pump after the first preset time of shutdown, and detecting the actual rotating speed of the vacuum pump to perform fault detection again. And when the shutdown times are more than or equal to the preset times, restarting the vacuum pump after the operation of starting the fresh-keeping space by the user is obtained, and detecting the actual rotating speed of the vacuum pump so as to perform fault detection again. The preset times can be set according to actual conditions, the preset times of the embodiment is 3, and therefore the vacuum pump is restarted after the shutdown for the first preset time length when the shutdown times are both 1 and 2, namely step S406 and step S412; and when the number of the shutdown times is 3, the vacuum pump is restarted after the operation of opening the fresh food space by the user is acquired, i.e., step S418.
In step S418, the operation of opening the fresh-keeping space by the user may be acquired by the opening and closing detection device provided in the fresh-keeping space. After the user starts the fresh-keeping space, the vacuum pump is restarted, the actual rotating speed of the vacuum pump is detected, so that fault detection is performed again, if the vacuum pump code is still output, step S422 can be executed, the vacuum pump is prohibited from being restarted, and a fault prompt signal is output. The failure prompt signal may be a buzzer warning sound emitted by a buzzer provided on the refrigerator 100, or may be a prompt message output by a display device provided on the refrigerator 100. The step is carried out after the user opens the fresh-keeping space, so that the output fault prompt signal can be ensured to be timely known by the user, the user can timely find the fault of the gas regulating system and maintain the gas regulating system, and the service life of the gas regulating system is prolonged. In addition, the failure of the vacuum pump can generate noise at the moment, and the user can be further prompted.
After the vacuum pump fault code is output for the first time in step S402, if the vacuum pump fault code is not output after the actual rotation speed of the vacuum pump is detected subsequently, it is indicated that the fault has been automatically repaired, the previous fault code can be cleared, and the normal operation of the air conditioning system is controlled to adjust the gas atmosphere in the fresh-keeping space.
The normal operating state of a typical vacuum pump is a period of shutdown B after a period of operation a. Therefore, the first preset time in the above steps can be B time, so that the temperature of the main motor of the vacuum pump can be reduced to a certain temperature after the main motor runs for a long time and is heated, the fault detection is not performed immediately after the fault code of the vacuum pump is output, and the overlong high-temperature duration time of the motor of the vacuum pump is avoided. And the vacuum pump may be restarted after acquiring the operation a duration for the user to open the fresh food space in step S418. In one specific embodiment, the A duration may be 0.5 hours and the B duration may be 7.5 hours. The specific values of A, B are merely exemplary and are not intended to limit the present invention.
According to the fault detection method of the refrigerator air conditioning system, the shutdown times are recorded after the vacuum pump is controlled to be shut down according to the output vacuum pump fault codes. And if the shutdown frequency is less than the preset frequency, restarting the vacuum pump after the first preset time of shutdown, and detecting the actual rotating speed of the vacuum pump to perform fault detection again. When the shutdown frequency is more than or equal to the preset frequency, the vacuum pump is restarted after the operation of starting the fresh-keeping space by the user is obtained, the actual rotating speed of the vacuum pump is detected, the fault detection is carried out again, the output fault prompt signal can be ensured to be timely known by the user, the user can timely find the fault of the gas regulating system and maintain the gas regulating system, and the service life of the gas regulating system is prolonged.
Fig. 5 is a detailed flowchart of a fault detection method of a refrigerator controlled atmosphere system according to another embodiment of the invention. The fault detection method of the refrigerator controlled atmosphere system of the embodiment is executed when the air leakage fault code or the air blockage fault code is output in step S306 of the embodiment of fig. 3, and comprises the following steps:
step S502, outputting a gas leakage fault code or a gas blockage fault code;
step S504, controlling the vacuum pump to stop, and recording the stop time;
step S506, restarting the vacuum pump in a pre-acquired user common time period, and detecting the actual rotating speed of the vacuum pump to perform fault detection again;
step S508, judging whether an air leakage fault code or an air blockage fault code is output, if so, executing step S510, and if not, executing step S516;
step S510, obtaining the current time and comparing the current time with the downtime;
step S512, judging whether the fault duration is greater than or equal to a second preset time length, if so, executing step S514, and if not, executing step S506;
step S514, resetting a normal rotating speed range according to the actual rotating speed of the vacuum pump at the current time;
in step S516, the fault code is cleared.
The fault detection method of the refrigerator gas conditioning system of the embodiment is executed when the gas leakage fault code or the gas blockage fault code is output in step S306 of the embodiment of fig. 3, that is, the gas leakage fault code or the gas blockage fault code is output for the first time in step S502. Wherein the air leakage fault code indicates that the air conditioning system has an air leakage problem; and the gas blockage fault code indicates that the gas regulation system has a gas blockage problem, and the two codes can indicate that the fault of the gas regulation system is not that the vacuum pump has a problem.
In step S506, the time period commonly used by the user is obtained in advance, and statistical analysis can be performed on the operation of the user to open the fresh-keeping space of the refrigerator in a longer period, so as to obtain the time period in which the user frequently opens the fresh-keeping space. The fault detection is carried out in the time period, so that the emitted noise can be heard by the user in time when the gas regulating system breaks down, and the user can be ensured to process according to the actual condition of the user.
For example, when the fault duration is equal to or greater than the second preset duration in step S512, the user may be considered as insensitive to noise and may find that maintenance is not necessary, so step S514 is performed to reset the normal rotation speed range according to the actual rotation speed of the vacuum pump at the current time, and step S516 is performed to clear the fault code. If the user can not receive the noise, the air conditioning system needs to be maintained, and the air conditioning system can be directly maintained.
The normal rotation speed range may be reset according to the actual rotation speed of the vacuum pump at the current time in step S514. For example, in one particular embodiment, the first speed may be S1-y, the second speed may be S1-x, the third speed may be S1+ x, and the fourth speed may be S1+ y, where y is greater than x, and in general, the first speed is less than the second speed and less than the third speed and less than the fourth speed. The original normal rotating speed range is an interval [ S1-x, S1+ x ], and the reference rotating speed is S1. At this time, the actual rotation speed of the vacuum pump at the current time may be used as the reference rotation speed, and the normal rotation speed range may be reset. For example, if the actual rotational speed of the vacuum pump at the present time is S2, the first rotational speed may be reset to S2-y, the second rotational speed may be reset to S2-x, the third rotational speed may be S2+ x, and the fourth rotational speed may be reset to S2+ y. That is, the reset normal rotation speed range may be [ S2-x, S2+ x ]. And then, judging the rotating speed of the vacuum pump according to the reset normal rotating speed range to determine the fault type of the air conditioning system.
After the gas leakage fault code or the gas blockage fault code is output for the first time, if the gas leakage fault code or the gas blockage fault code is not output after the actual rotating speed of the vacuum pump is detected subsequently, for example, the gas leakage fault code or the gas blockage fault code is not output in the step S508, which indicates that the fault is automatically repaired, the previous fault code can be cleared, and the gas conditioning system is controlled to normally work to adjust the gas atmosphere of the fresh-keeping space.
According to the fault detection method of the refrigerator controlled atmosphere system, the fault detection is performed again in the time period commonly used by the user aiming at the output gas leakage fault code or gas blockage fault code, so that the noise emitted when the controlled atmosphere system breaks down can be ensured to be heard by the user in time, the user can be ensured to process according to the actual condition of the user, the user is insensitive to the noise, and when the user feels that the maintenance is not needed, the normal rotating speed range can be reset according to the actual rotating speed of the vacuum pump at the current time, and the fault code is eliminated; the user can not receive the noise, and when feeling that the air conditioning system needs to be maintained, the air conditioning system can be directly maintained, so that the user can be timely reminded when the air conditioning system breaks down, the running state of the air conditioning system can be timely adjusted according to the actual requirements of the user, and the use experience of the user is improved.
The present embodiment further provides a computer storage medium 200, and fig. 6 is a schematic diagram of the computer storage medium 200 according to an embodiment of the present invention, the computer storage medium 200 stores a computer program 201, and the computer program 201 runs to cause an apparatus in which the computer storage medium 200 is located to execute the fault detection method of the refrigerator air conditioning system according to any one of the above embodiments. The device in which the computer storage medium 200 is located is the refrigerator 100, and the refrigerator 100 can execute the fault detection method of the refrigerator air conditioning system in any of the embodiments.
The computer storage medium 200 of the present embodiment may be an electronic memory such as a flash memory, an EEPROM (electrically erasable and programmable read only memory), an EPROM, a hard disk, or a ROM. The computer storage medium 200 has a storage space for a computer program 201 for performing any of the method steps of the above-described method. These computer programs 201 may be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. The steps of the method described above may be performed when the computer program 201 is run by a device of the computer storage medium 200.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. A fault detection method for a refrigerator air conditioning system is disclosed, wherein the refrigerator comprises a refrigerator body, a storage space and a compressor bin are limited in the refrigerator body, and a fresh-keeping space is arranged in the storage space; the atmosphere control system comprises an atmosphere control membrane assembly arranged in the fresh-keeping space and a vacuum pump arranged in the compressor bin, and is configured to regulate the gas atmosphere in the fresh-keeping space; and a rotation speed detection circuit connected to the vacuum pump, configured to detect a rotation speed of the vacuum pump, and the failure detection method includes:
detecting the actual rotating speed of the vacuum pump through the rotating speed detection circuit;
judging whether the actual rotating speed of the vacuum pump is within a pre-acquired normal rotating speed range of the vacuum pump; and
if not, determining that the gas regulating system has a fault and outputting a corresponding fault code according to the actual rotating speed of the vacuum pump, wherein the fault code comprises a vacuum pump fault code, a gas leakage fault code and a gas blockage fault code, and the gas leakage fault code and the gas blockage fault code can both indicate that the fault of the gas regulating system is not that the vacuum pump has a problem,
when the air leakage fault code or the air blockage fault code is output, controlling the vacuum pump to stop, and recording the stop time;
after the step of controlling the vacuum pump to stop, the method further comprises the following steps: restarting the vacuum pump in a pre-acquired user common time period, and detecting the actual rotating speed of the vacuum pump to perform fault detection again;
and restarting the vacuum pump in a pre-acquired user common time period, and when the air leakage fault code or the air blockage fault code is still output, acquiring the current time, comparing the current time with the downtime, judging whether the fault duration is more than or equal to a second preset time length, if so, resetting the normal rotating speed range according to the actual rotating speed of the vacuum pump at the current time, and clearing the air leakage fault code or the air blockage fault code.
2. The method for fault detection of a refrigerator controlled atmosphere system of claim 1, wherein,
the normal rotation speed range of the vacuum pump is greater than or equal to the second rotation speed and less than or equal to the third rotation speed, and
the step of outputting a corresponding fault code according to the actual rotation speed of the vacuum pump comprises the following steps: outputting a fault code of the vacuum pump when the actual rotating speed of the vacuum pump is less than the first rotating speed or greater than the fourth rotating speed; outputting the gas blockage fault code when the actual rotating speed of the vacuum pump is greater than or equal to the first rotating speed and less than a second rotating speed; and outputting the air leakage fault code when the actual rotating speed of the vacuum pump is greater than a third rotating speed and less than or equal to a fourth rotating speed, wherein the first rotating speed is less than the second rotating speed and less than the third rotating speed and less than the fourth rotating speed.
3. The method for fault detection of a refrigerator controlled atmosphere system of claim 2, wherein,
and when the fault code of the vacuum pump is output, controlling the vacuum pump to stop, and recording the stop times.
4. The method for fault detection in a refrigerator air conditioning system of claim 3, further comprising after the step of recording the number of shutdowns:
judging whether the shutdown times are less than preset times or not; and
if yes, restarting the vacuum pump after stopping for a first preset time, and detecting the actual rotating speed of the vacuum pump to detect the fault again.
5. The method for fault detection of a refrigerator controlled atmosphere system of claim 4, wherein,
and when the shutdown times are more than or equal to the preset times, restarting the vacuum pump after obtaining the operation of starting the fresh-keeping space by the user, and detecting the actual rotating speed of the vacuum pump so as to perform fault detection again.
6. The method for fault detection of a refrigerator controlled atmosphere system of claim 5, wherein,
and after the operation that the user opens the fresh-keeping space is obtained, restarting the vacuum pump, and when the fault code of the vacuum pump is still output, forbidding the restart of the vacuum pump and outputting a fault prompt signal.
7. A computer storage medium, in which a computer program is stored, and which when run causes an apparatus of the computer storage medium to perform the method of fault detection of a refrigerator air conditioning system according to any one of claims 1 to 6.
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| CN113137804A (en) * | 2021-04-28 | 2021-07-20 | 珠海格力电器股份有限公司 | Fault diagnosis method for gas-conditioning preservation system, gas-conditioning preservation system and refrigerator |
| CN113137811A (en) * | 2021-04-28 | 2021-07-20 | 珠海格力电器股份有限公司 | Fault diagnosis method for gas-conditioning preservation system, gas-conditioning preservation system and refrigerator |
| CN113137805A (en) * | 2021-04-28 | 2021-07-20 | 珠海格力电器股份有限公司 | Gas concentration regulation and control method for refrigerator and refrigerator |
| CN113465270A (en) * | 2021-06-30 | 2021-10-01 | 重庆海尔制冷电器有限公司 | Fault prompting method for refrigerator |
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| CN103090612A (en) * | 2012-10-24 | 2013-05-08 | 徐东明 | Fresh-keeping refrigerator |
| CN105373440A (en) * | 2015-11-02 | 2016-03-02 | 努比亚技术有限公司 | Fault detection and recovery apparatus and method |
| CN106375111A (en) * | 2016-08-25 | 2017-02-01 | 珠海迈科智能科技股份有限公司 | Network fault automatic correcting method and system of intelligent gateway |
| CN106679276B (en) * | 2016-12-09 | 2020-05-26 | 青岛海尔股份有限公司 | Refrigerating and freezing device with air-conditioning fresh-keeping function |
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