CN114646168A - Refrigerator and control method of vacuum drawer of refrigerator - Google Patents
Refrigerator and control method of vacuum drawer of refrigerator Download PDFInfo
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- CN114646168A CN114646168A CN202210252904.8A CN202210252904A CN114646168A CN 114646168 A CN114646168 A CN 114646168A CN 202210252904 A CN202210252904 A CN 202210252904A CN 114646168 A CN114646168 A CN 114646168A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005086 pumping Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 abstract description 22
- 239000000463 material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 8
- 238000007906 compression Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011555 saturated liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006479 redox reaction Methods 0.000 description 1
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- 238000006722 reduction reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/30—Insulation with respect to sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
Abstract
The invention discloses a refrigerator and a control method of a vacuum drawer of the refrigerator. During vacuum pumping, the double pumps are controlled to be started simultaneously according to preset initial power, then in the operation process of the double pumps, in order to avoid the problem of overlarge noise, the operation states of the first vacuum pump and the second vacuum pump are controlled in stages according to the pressure difference between standard atmospheric pressure and real-time atmospheric pressure, the operation powers of the first vacuum pump and the second vacuum pump are respectively adjusted, the double pumps stop working until the vacuum drawer enters a pressure maintaining state, and the noise is reduced as much as possible while the vacuum pumping time is shortened. The embodiment of the invention adopts the double vacuum pumps to vacuumize the vacuum drawer, reduces the vacuumizing time, and simultaneously adjusts the working power of the double vacuum pumps in stages, thereby avoiding the continuous high noise phenomenon caused by long-time high-power work of the double vacuum pumps.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a refrigerator and a control method of a vacuum drawer of the refrigerator.
Background
Refrigerators occupy an important share of the market as indispensable electric appliances in home life. With the increasing requirements of consumers on the quality of fresh food, the requirements on refrigerators are also increasing, and refrigerators are required to have higher configuration and stronger functions, and especially, it is desirable that the stored fresh food can have a longer storage period, so that the freshness of food materials is ensured, and the loss of nutritional ingredients is prevented. In order to better store food, the Haixin is pushed out of a full-ecological and full-scene vacuum fresh-keeping refrigerator, which comprises a refrigerator with a vacuum drawer, an on-door vacuum-pumping refrigerator, a door shelf vacuum-pumping refrigerator and an in-door vacuum box refrigerator. The vacuum fresh-keeping refrigerator chamber carries out vacuum pumping treatment on the vacuum chamber through a vacuum pumping device, reduces the air content of the chamber, weakens the oxidation-reduction reaction of food materials, and prevents food from deteriorating. The existing refrigerator vacuum drawers are all vacuumized by utilizing a vacuum pump, and in order to reach the target vacuum degree, the vacuumization time which needs to be spent is long, so that the food storage quality is influenced.
Disclosure of Invention
The embodiment of the invention aims to provide a refrigerator and a control method of a vacuum drawer of the refrigerator.
To achieve the above object, an embodiment of the present invention provides a refrigerator, including:
the vacuum drawer comprises a box body, a drawer body and a vacuum module; the vacuum module is arranged on one side of the box body and comprises a first vacuum pump and a second vacuum pump which are used for vacuumizing the vacuum drawer;
the controller is configured to:
responding to a vacuumizing instruction of the vacuum drawer, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
acquiring standard atmospheric pressure outside the vacuum drawer and real-time atmospheric pressure inside the vacuum drawer, and calculating the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
and adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer enters a pressure maintaining state.
As an improvement of the above, the adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference includes:
when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, adjusting the power of the first vacuum pump to be a first power, and adjusting the power of the second vacuum pump to be a second power;
when the air pressure difference is greater than or equal to the second air pressure and smaller than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
As an improvement of the above, the controller is further configured to:
before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and controlling the first initial power to be P11 and the second initial power to be P21 after the first vacuum pump and the second vacuum pump are started;
when the compressor or the fan is in an operating state, controlling the first initial power to be P12 and the second initial power to be P22 after the first vacuum pump and the second vacuum pump are started; wherein P11 > P12 and P21 > P22.
As an improvement of the above, after responding to a vacuum drawing command of the vacuum drawer, the controller is further configured to:
after the first vacuum pump and the second vacuum pump run, obtaining the running states of the first vacuum pump and the second vacuum pump after a preset detection time period;
if any vacuum pump of the first vacuum pump and the second vacuum pump does not work, determining that the non-working vacuum pump is a failure vacuum pump;
after the vacuumizing operation of the current period is finished, acquiring the historical running state of the fault vacuum pump in the historical period; wherein each cycle comprises at least one of a dual pump operating phase, a first vacuum pump operating phase only, a second vacuum pump operating phase only, and a dwell phase;
determining the working stop times N of the fault vacuum pump according to the historical running state;
if N is larger than or equal to M, sending a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
As an improvement of the above scheme, the first vacuum pump and the second vacuum pump respectively comprise a vacuum pump body, an exhaust pipe and an exhaust pipe; one end of the exhaust pipe is communicated with the box body, the other end of the exhaust pipe is communicated with the vacuum pump body, one end of the exhaust pipe is communicated with the vacuum pump body, and the other end of the exhaust pipe is connected to the outside of the refrigerator.
In order to achieve the above object, an embodiment of the present invention further provides a method for controlling a vacuum drawer of a refrigerator, the vacuum drawer including a first vacuum pump and a second vacuum pump for performing a vacuum pumping operation on the vacuum drawer, the method including:
responding to a vacuumizing instruction of the vacuum drawer, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
acquiring standard atmospheric pressure outside the vacuum drawer and real-time atmospheric pressure inside the vacuum drawer, and calculating the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer enters a pressure maintaining state
As an improvement of the above, the adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference includes:
when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, adjusting the power of the first vacuum pump to be a first power, and adjusting the power of the second vacuum pump to be a second power;
when the air pressure difference is greater than or equal to the second air pressure and less than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
As an improvement of the above, the method further comprises:
before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and controlling the first initial power to be P11 and the second initial power to be P21 after the first vacuum pump and the second vacuum pump are started;
when the compressor or the fan is in an operating state, controlling the first initial power to be P12 and the second initial power to be P22 after the first vacuum pump and the second vacuum pump are started; wherein P11 > P12 and P21 > P22.
As an improvement of the above, after responding to the vacuum drawing command of the vacuum drawer, the method further comprises:
after the first vacuum pump and the second vacuum pump operate, acquiring the operating states of the first vacuum pump and the second vacuum pump after a preset detection time period;
if any vacuum pump of the first vacuum pump and the second vacuum pump does not work, determining that the non-working vacuum pump is a failure vacuum pump;
after the vacuumizing operation of the current period is finished, acquiring the historical running state of the fault vacuum pump in the historical period; wherein each cycle comprises at least one of a dual pump operating phase, a first vacuum pump operating phase only, a second vacuum pump operating phase only, and a dwell phase;
determining the stop working times N of the failed vacuum pump according to the historical running state;
if N is larger than or equal to M, sending a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
As an improvement of the above scheme, the first vacuum pump and the second vacuum pump respectively comprise a vacuum pump body, an exhaust pipe and an exhaust pipe; one end of the exhaust pipe is communicated with the box body of the vacuum drawer, the other end of the exhaust pipe is communicated with the vacuum pump body, one end of the exhaust pipe is communicated with the vacuum pump body, and the other end of the exhaust pipe is connected to the outside of the refrigerator.
Compared with the prior art, the refrigerator and the control method of the vacuum drawer of the refrigerator disclosed by the embodiment of the invention have the advantages that the first vacuum pump and the second vacuum pump are arranged in the vacuum drawer, the vacuum drawer is vacuumized by using the double pumps, the vacuumizing time is shortened, and the vacuum drawer can quickly enter a vacuum environment. During vacuum pumping, the double pumps are controlled to be started simultaneously according to preset initial power, then in the running process of the double pumps, in order to avoid the problem of overlarge noise, the running states of the first vacuum pump and the second vacuum pump are controlled in stages according to the pressure difference between standard atmospheric pressure and real-time atmospheric pressure, the running powers of the first vacuum pump and the second vacuum pump are respectively adjusted, the double pumps stop working until the vacuum drawer enters a pressure maintaining state, and the noise is reduced as much as possible while the vacuum pumping time is shortened. The embodiment of the invention adopts the double vacuum pumps to vacuumize the vacuum drawer, reduces the vacuumizing time, and simultaneously adjusts the working power of the double vacuum pumps in stages, thereby avoiding the continuous high noise phenomenon caused by long-time high-power work of the double vacuum pumps.
Drawings
Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a refrigeration system for a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vacuum drawer provided by an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a vacuum pump provided in an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for controlling a vacuum drawer of a refrigerator according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a step S3 of a method for controlling a vacuum drawer of a refrigerator according to an embodiment of the present invention;
fig. 7 is a flowchart of step S1 of the method for controlling the vacuum drawer of the refrigerator according to the embodiment of the present invention;
fig. 8 is a flowchart of determining a failure determination of a vacuum pump according to an embodiment of the present invention.
100, a refrigerator; 10. a vacuum drawer; 20. a controller; 1. a compressor; 2. a condenser; 3. an anti-condensation pipe; 4. drying the filter; 5. a capillary tube; 6. an evaporator; 7. a gas-liquid separator; 11. a box body; 12. a drawer body; 13. a vacuum module; 131. a vacuum pump body; 132. an air exhaust pipe; 133. and (4) exhausting the gas.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator 100 according to an embodiment of the present invention, the refrigerator 100 includes a vacuum drawer 10 and a controller 20, the vacuum drawer 10 is used for placing food materials and creating a vacuum environment, and the controller 20 controls an operation process of a vacuum pump in the vacuum drawer 10.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a refrigeration system in a refrigerator according to an embodiment of the present invention, where the refrigeration system includes a compressor 1, a condenser 2, a condensation preventing pipe 3, a dry filter 4, a capillary tube 5, an evaporator 6, and a gas-liquid separator 7. The working process of the refrigeration system comprises a compression process, a condensation process, a throttling process and an evaporation process.
Wherein, the compression process is as follows: the power cord of the refrigerator is plugged, when the contact of the temperature controller is connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked by the compressor 1, and is compressed into high-temperature and high-pressure superheated gas in the cylinder of the compressor 1 and then is discharged into the condenser 2; the condensation process is as follows: the high-temperature and high-pressure refrigerant gas is radiated by the condenser 2, the temperature is continuously reduced, the refrigerant gas is gradually cooled into normal-temperature and high-pressure saturated vapor and further cooled into saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as the condensation temperature, and the pressure of the refrigerant in the whole condensation process is almost unchanged; the throttling process is as follows: the condensed refrigerant saturated liquid flows into the capillary tube 5 after moisture and impurities are filtered by the drying filter 4, throttling and pressure reduction are carried out through the capillary tube, and the refrigerant is changed into normal-temperature low-pressure wet vapor; the evaporation process is as follows: the normal temperature and low pressure wet steam starts to absorb heat for vaporization in the evaporator 6, which not only reduces the temperature of the evaporator and the surrounding, but also changes the refrigerant into low temperature and low pressure gas, the refrigerant from the evaporator 6 returns to the compressor 1 after passing through the gas-liquid separator 7, and the processes are repeated to transfer the heat in the refrigerator to the air outside the refrigerator, thereby realizing the purpose of refrigeration.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a vacuum drawer 10 according to an embodiment of the present invention; the vacuum drawer 10 includes: the vacuum drawer comprises a box body 11, a drawer body 12 and a vacuum module 13, wherein the vacuum module 13 is arranged on one side of the box body 11 and comprises a first vacuum pump and a second vacuum pump which are used for vacuumizing the vacuum drawer 10. Referring to fig. 4, fig. 4 is a schematic structural diagram of a first vacuum pump and a second vacuum pump provided in an embodiment of the present invention, where the first vacuum pump and the second vacuum pump include a vacuum pump body 131, an exhaust pipe 132, and an exhaust pipe 133; one end of the air exhaust pipe 132 is communicated with the refrigerator body 11, the other end of the air exhaust pipe 132 is communicated with the vacuum pump body 131, one end of the air exhaust pipe 133 is communicated with the vacuum pump body 131, and the other end of the air exhaust pipe 133 is connected to the outside of the refrigerator 100.
Illustratively, the air suction pipe 132, which is in communication with the cabinet 11, continuously sucks the air from the thawing drawer 10 by the vacuum pump body 131, and then discharges the air out of the refrigerator 100 through the air discharge pipe 133. The vacuum pump can be a roots pump, two 8-shaped rotors of the roots pump are vertically arranged on a pair of parallel shafts in a pump cavity, a pair of gears with the transmission ratio of 1 drive the rotors to perform opposite synchronous rotation, a certain gap is kept between the rotors and the inner wall of a pump shell, and high-speed operation can be realized. Because the roots pump is a vacuum pump without internal compression, the compression ratio is usually very low, and therefore, the high-medium vacuum pump needs a backing pump. The limit vacuum of the roots pump depends on the limit vacuum of the backing pump besides the structure and the manufacturing precision of the pump, and the roots pump can be used in series in order to improve the limit vacuum degree of the pump. The Roots pump sucks pumped gas into a space between the rotor and the pump shell from the air suction pipe due to the continuous rotation of the rotor, and then the pumped gas is discharged through the exhaust pipe.
The controller 20 is configured to:
responding to a vacuumizing instruction of the vacuum drawer 10, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
acquiring standard atmospheric pressure outside the vacuum drawer 10 and real-time atmospheric pressure inside the vacuum drawer 10, and calculating a pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
and adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer 10 enters a pressure maintaining state.
Illustratively, when a user needs to store food materials in vacuum, after the food materials are placed, a vacuumizing instruction may be sent to the controller 20 through a key, and after receiving the vacuumizing instruction, the controller controls the first vacuum pump to operate according to a first initial power and controls the second vacuum pump to operate according to a second initial power, where the first initial power and the second initial power may be rated powers of vacuum pumps, and the first vacuum pump and the second vacuum pump may be vacuum pumps of the same model. After the vacuum pumps are started simultaneously, the atmospheric pressure in the vacuum drawer 10 can be rapidly reduced at the moment, the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure is obtained at the moment, the power of the first vacuum pump and the power of the second vacuum pump are adjusted according to the atmospheric pressure difference, and the first vacuum pump and the second vacuum pump do not work until the vacuum drawer enters a pressure maintaining state.
Optionally, the adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference includes:
when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, adjusting the power of the first vacuum pump to be a first power, and adjusting the power of the second vacuum pump to be a second power;
when the air pressure difference is greater than or equal to the second air pressure and less than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
Illustratively, in embodiments of the present invention, there are periods of vacuum pump operation, each period including at least one of a dual pump operation phase, a first vacuum pump only operation phase, a second vacuum pump only operation phase, and a dwell phase. Acquiring real-time atmospheric pressure of the vacuum drawer at fixed time intervals (such as 1h) to determine whether a next period needs to be entered, controlling the first vacuum pump and the second vacuum pump to operate in the above manner until a third atmospheric pressure is reached, entering a pressure maintaining state, stopping the two vacuum pumps, in the process, after 1h, the real-time atmospheric pressure is detected and the air pressure difference is calculated, once the air pressure difference is not equal to the third air pressure, exiting the pressure maintaining state and entering a second period, repeating the process, and if the air pressure difference is detected to be smaller than the first air pressure before entering the second period, indicating that the real-time atmospheric pressure of the vacuum drawer 10 is close to the standard atmospheric pressure, controlling the first vacuum pump to operate according to a first initial power and controlling the second vacuum pump to operate according to a second initial power; if the air pressure difference is detected to be between the first air pressure and the second air pressure before entering the second period, adjusting the power of the first vacuum pump to be first power, and adjusting the power of the second vacuum pump to be second power; and so on. Therefore, it is not always necessary to perform a double pump operation stage once for one cycle, and which stage is determined as an initial stage according to the pressure difference, but each cycle is always subjected to a pressure holding stage.
For example, in the dual-pump operation stage, the first vacuum pump and the second vacuum pump operate simultaneously, at this time, the noise is large, but the vacuum environment required by the vacuum drawer can be reached quickly, in order to avoid that this process (the time period for the dual-pump operation to reach the vacuum environment may be 5min) continues to be in a high-noise condition, in this process, the operation powers of the two vacuum pumps are controlled by judging the air pressure difference, if the first initial power and the second initial power are both rated powers, when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, the adjusted first power and second power are both 60% of the rated power, or the first power is 60% of the rated power, and the second power is 70% of the rated power. In the operating stage of the first vacuum pump only, the power of the first vacuum pump is reduced to a third power or kept unchanged, for example, the third power is 40% or 60% of rated power, and the second vacuum pump is controlled to stop working, so that almost half of noise can be reduced, and the drawer is close to a vacuum environment, so that the quality of the food materials cannot be influenced. When the air pressure difference is equal to the third air pressure, the vacuum environment required by the vacuum drawer 10 is achieved, the first vacuum pump is controlled to stop working at the moment, the pressure maintaining stage is started, the air pressure in the vacuum drawer 10 is gradually increased due to insufficient sealing performance in the pressure maintaining stage, and therefore the first vacuum pump and the second vacuum pump are required to work repeatedly.
In the embodiment of the invention, the vacuum drawer 10 can quickly reach a vacuum environment by utilizing the operation of the two vacuum pumps, meanwhile, the continuous high-noise phenomenon caused by long-time high-power operation of the two pumps can be avoided by adjusting the operation power of the vacuum pumps, the noise can be gradually reduced by gradually reducing the operation power of the vacuum pumps, and the discomfort caused by the continuous high-noise phenomenon by the noise to a user can be reduced.
Optionally, the controller 20 is further configured to:
before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and controlling the first initial power to be P11 and the second initial power to be P21 after the first vacuum pump and the second vacuum pump are started;
when the compressor or the fan is in an operating state, controlling the first initial power to be P12 and the second initial power to be P22 after the first vacuum pump and the second vacuum pump are started; wherein P11 > P12 and P21 > P22.
For example, in order to avoid the problem that the overall noise of the refrigerator is too high due to the operation of other high-noise devices in the refrigerator when the vacuum pump is operated, before the vacuum pump is operated, the operating states of a compressor and a fan in the refrigerator are checked, if the compressor and the fan are both in a shutdown state, for example, the refrigerator is defrosted at the time, the initial operating powers of the first vacuum pump and the second vacuum pump at the time can be a little greater, and P11 and P12 can be the rated powers of the first vacuum pump and the second vacuum pump respectively, and the compressor and the fan are controlled to be in the shutdown state at the same time until the two vacuum pumps are started after being stopped. If both the compressor and the fan are running before the first vacuum pump and the second vacuum pump are started, then the initial operating power of the first vacuum pump and the second vacuum pump may be a little lower, and both P12 and P22 may be 70% rated power, in order to reduce noise, and the fan and the compressor may still be running.
Optionally, after responding to the vacuum drawing command of the vacuum drawer, the controller 20 is further configured to:
after the first vacuum pump and the second vacuum pump operate, acquiring the operating states of the first vacuum pump and the second vacuum pump after a preset detection time period;
if any vacuum pump of the first vacuum pump and the second vacuum pump does not work, determining that the non-working vacuum pump is a failure vacuum pump;
after the vacuumizing operation of the current period is finished, acquiring the historical running state of the fault vacuum pump in the historical period; wherein each cycle comprises at least one of a dual pump operating phase, a first vacuum pump operating phase only, a second vacuum pump operating phase only, and a dwell phase;
determining the working stop times N of the fault vacuum pump according to the historical running state;
if N is larger than or equal to M, sending a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
For example, two vacuum pumps are arranged in the vacuum drawer 10, and in the event that one vacuum pump fails, the other vacuum pump still operates to enable the vacuum drawer 10 to enter a vacuum environment, after the vacuum pumps are started and operated, whether the vacuum pump operated at this stage is accurately started is detected within a first detection time period (for example, 10s), for example, the first vacuum pump is not started in a two-pump operation stage, at this time, it is determined that the first vacuum pump is a failed vacuum pump, and the number of times of stopping operations of the failed vacuum pump is accumulated to be 1. Because the second vacuum pump is not failed, the real-time atmospheric pressure of the vacuum drawer 10 will still continue to decrease under the action of the second vacuum pump until entering the pressure maintaining state, and then enter the next period, at this time, if it is still detected that the first vacuum pump is accurately started at the stage of the operation, if not, the number of times of stopping the failed vacuum pump is 1+ 1-2, and when M-2, a failure prompt may be sent. When the drawer is not accurately started continuously for many times, in order to avoid influencing the vacuum effect of the drawer, at the moment, the other vacuum pump carries out vacuumizing operation on the vacuum drawer according to a preset single-pump operation mode, the single-pump operation mode is a common operation mode in the prior art, and the details are not repeated.
In the embodiment of the invention, when one vacuum pump fails, the other vacuum pump can still normally operate to ensure that the drawer keeps a vacuum environment, at least two fault judgments are carried out simultaneously, the misjudgments caused by the faults when the vacuum pumps are in poor contact are avoided, when the faults are judged for two times, the fact that the failed vacuum pump can not be normally used any more and needs to be replaced can be shown, and at the moment, prompt information is sent to remind a user.
Compared with the prior art, in the refrigerator 100 disclosed in the embodiment of the present invention, the vacuum drawer 10 is provided with the first vacuum pump and the second vacuum pump, and the vacuum drawer 10 is vacuumized by using the dual pumps, so that the vacuum time is shortened, and the vacuum drawer 10 can quickly enter the vacuum environment. During vacuum pumping, the double pumps are controlled to be started simultaneously according to preset initial power, then in the running process of the double pumps, in order to avoid the problem of overlarge noise, the running states of the first vacuum pump and the second vacuum pump are controlled in stages according to the pressure difference between standard atmospheric pressure and real-time atmospheric pressure, the running powers of the first vacuum pump and the second vacuum pump are respectively adjusted, the double pumps stop working until the vacuum drawer enters a pressure maintaining state, and the noise is reduced as much as possible while the vacuum pumping time is shortened. The embodiment of the invention adopts the double vacuum pumps to vacuumize the vacuum drawer, reduces the vacuumizing time, and simultaneously adjusts the working power of the double vacuum pumps in stages, thereby avoiding the continuous high noise phenomenon caused by long-time high-power work of the double vacuum pumps.
Referring to fig. 5, fig. 5 is a flowchart of a method for controlling a vacuum drawer of a refrigerator, the vacuum drawer including a first vacuum pump and a second vacuum pump for performing a vacuum pumping operation thereon, the method including steps S1 to S3:
s1, responding to a vacuumizing instruction of the vacuum drawer, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
s2, acquiring standard atmospheric pressure outside the vacuum drawer and real-time atmospheric pressure inside the vacuum drawer, and calculating the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
and S3, adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer enters a pressure maintaining state.
Illustratively, the method for controlling a vacuum drawer of a refrigerator according to the embodiment of the present invention is implemented by a controller in the refrigerator, when a user needs to store food materials in vacuum, after the food materials are placed, a vacuumizing instruction may be sent to the controller by a key, after receiving the vacuumizing instruction, the controller controls the first vacuum pump to operate according to a first initial power and controls the second vacuum pump to operate according to a second initial power, the first initial power and the second initial power may be rated powers of the vacuum pumps, and the first vacuum pump and the second vacuum pump may be vacuum pumps of the same model. After the vacuum pumps are started simultaneously, the atmospheric pressure in the vacuum drawer can be rapidly reduced, the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure is obtained, the power of the first vacuum pump and the power of the second vacuum pump are adjusted according to the atmospheric pressure difference, and the first vacuum pump and the second vacuum pump do not work until the vacuum drawer enters a pressure maintaining state.
Optionally, the first vacuum pump and the second vacuum pump respectively comprise a vacuum pump body, an exhaust pipe and an exhaust pipe; one end of the exhaust pipe is communicated with the box body of the vacuum drawer, the other end of the exhaust pipe is communicated with the vacuum pump body, one end of the exhaust pipe is communicated with the vacuum pump body, and the other end of the exhaust pipe is connected to the outside of the refrigerator.
Illustratively, the air exhaust pipe communicated with the box body continuously exhausts the air of the thawing drawer under the action of the vacuum pump body, and then the air is exhausted out of the refrigerator through the exhaust pipe. The vacuum pump can be a roots pump, two 8-shaped rotors of the roots pump are vertically arranged on a pair of parallel shafts in a pump cavity, a pair of gears with the transmission ratio of 1 drive the rotors to perform opposite synchronous rotation, a certain gap is kept between the rotors and the inner wall of a pump shell, and high-speed operation can be realized. Because the roots pump is a vacuum pump without internal compression, the compression ratio is usually very low, and therefore, the high-medium vacuum pump needs a backing pump. The limit vacuum of the roots pump depends on the limit vacuum of the backing pump besides the structure and the manufacturing precision of the pump, and the roots pump can be used in series in order to improve the limit vacuum degree of the pump. The Roots pump sucks pumped gas into a space between the rotor and the pump shell from the air suction pipe due to the continuous rotation of the rotor, and then the pumped gas is discharged through the exhaust pipe.
Referring to fig. 6, fig. 6 is a flowchart of step S3 in the method for controlling the vacuum drawer of the refrigerator according to the embodiment of the present invention, where the adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference includes steps S31 to S33:
s31, when the air pressure difference is greater than or equal to a preset first air pressure and smaller than a preset second air pressure, adjusting the power of the first vacuum pump to be first power, and adjusting the power of the second vacuum pump to be second power;
s32, when the air pressure difference is greater than or equal to the second air pressure and smaller than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
s33, when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
Illustratively, in embodiments of the present invention, there are periods of vacuum pump operation, each period including at least one of a dual pump operation phase, a first vacuum pump only operation phase, a second vacuum pump only operation phase, and a dwell phase. Acquiring real-time atmospheric pressure of the vacuum drawer at fixed time intervals (such as 1h) to determine whether a next period needs to be entered, controlling the first vacuum pump and the second vacuum pump to operate in the above manner until a third atmospheric pressure is reached, entering a pressure maintaining state, stopping the two vacuum pumps, in the process, after 1h, the real-time atmospheric pressure is detected and the air pressure difference is calculated, once the air pressure difference is not equal to the third air pressure, exiting the pressure maintaining state and entering a second period, repeating the process, and if the air pressure difference is detected to be smaller than the first air pressure before entering the second period, indicating that the real-time atmospheric pressure of the vacuum drawer is close to the standard atmospheric pressure, controlling the first vacuum pump to operate according to a first initial power and controlling the second vacuum pump to operate according to a second initial power; if the air pressure difference is detected to be between the first air pressure and the second air pressure before entering the second period, adjusting the power of the first vacuum pump to be first power, and adjusting the power of the second vacuum pump to be second power; and so on. Therefore, it is not always necessary to perform a double pump operation stage once for one cycle, and which stage is determined as an initial stage according to the pressure difference, but each cycle is always subjected to a pressure holding stage.
For example, in the dual-pump operation stage, the first vacuum pump and the second vacuum pump operate simultaneously, at this time, the noise is large, but the vacuum environment required by the vacuum drawer can be reached quickly, in order to avoid that this process (the time period for the dual-pump operation to reach the vacuum environment may be 5min) continues to be in a high-noise condition, in this process, the operation powers of the two vacuum pumps are controlled by judging the air pressure difference, if the first initial power and the second initial power are both rated powers, when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, the adjusted first power and second power are both 60% of the rated power, or the first power is 60% of the rated power, and the second power is 70% of the rated power. In the operation stage of the first vacuum pump only, the power of the first vacuum pump is reduced to a third power or kept unchanged, for example, the third power is 40% or 60% of rated power, and the second vacuum pump is controlled to stop working, so that approximately half of noise can be reduced, and the drawer is close to the vacuum environment, and the quality of the food materials cannot be influenced. And when the air pressure difference is equal to the third air pressure, the vacuum environment required by the vacuum drawer is achieved, the first vacuum pump is controlled to stop working at the moment, the pressure maintaining stage is started, the air pressure in the vacuum drawer is gradually increased due to insufficient sealing performance in the pressure maintaining stage, and therefore the first vacuum pump and the second vacuum pump are required to work repeatedly.
In the embodiment of the invention, the vacuum drawer can quickly reach a vacuum environment by utilizing the operation of the two vacuum pumps, meanwhile, the continuous high-noise phenomenon caused by long-time high-power work of the two pumps can be avoided by adjusting the operation power of the vacuum pumps, the noise can be gradually reduced by gradually reducing the operation power of the vacuum pumps, and the discomfort caused by the continuous high-noise phenomenon by the noise to a user can be reduced.
Referring to fig. 7, fig. 7 is a flowchart of step S1 in the method for controlling the vacuum drawer of the refrigerator according to the embodiment of the present invention, and step S1 includes steps S11 to S13:
s11, before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
s12, when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and after the first vacuum pump and the second vacuum pump are started, controlling the first initial power to be P11 and the second initial power to be P21;
s13, when the compressor or the fan is in a running state, after the first vacuum pump and the second vacuum pump are started, controlling the first initial power to be P12 and the second initial power to be P22; wherein P11 > P12 and P21 > P22.
For example, in order to avoid the problem that the overall noise of the refrigerator is too high due to the operation of other high-noise devices in the refrigerator when the vacuum pump is operated, before the vacuum pump is operated, the operating states of a compressor and a fan in the refrigerator are checked, if the compressor and the fan are both in a shutdown state, for example, the refrigerator is defrosted at the time, the initial operating powers of the first vacuum pump and the second vacuum pump at the time can be a little greater, and P11 and P12 can be the rated powers of the first vacuum pump and the second vacuum pump respectively, and the compressor and the fan are controlled to be in the shutdown state at the same time until the two vacuum pumps are started after being stopped. If both the compressor and the fan are running before the first vacuum pump and the second vacuum pump are started, then the initial operating power of the first vacuum pump and the second vacuum pump may be a little lower and both P12 and P22 may be 70% rated power in order to reduce noise.
Referring to fig. 8, fig. 8 is a flowchart of determining a failure determination of a vacuum pump according to an embodiment of the present invention, and after responding to a vacuum pumping command of the vacuum drawer, the method further includes steps S4 to S7:
s4, after the first vacuum pump and the second vacuum pump operate, acquiring the operating states of the first vacuum pump and the second vacuum pump after a preset detection time period;
s5, if any vacuum pump of the first vacuum pump and the second vacuum pump is detected to be out of operation, determining that the out-of-operation vacuum pump is a failure vacuum pump;
s6, acquiring the historical running state of the fault vacuum pump in the historical period after the vacuum pumping operation of the current period is finished; wherein each cycle comprises at least one of a dual pump operation phase, a first vacuum pump only operation phase, a second vacuum pump only operation phase, and a dwell phase;
s7, determining the stop working times N of the fault vacuum pump according to the historical running state; if N is more than or equal to M, sending out a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
For example, two vacuum pumps are arranged in the vacuum drawer, and in the case that one vacuum pump fails, the other vacuum pump still works to enable the vacuum drawer to enter a vacuum environment, after the vacuum pumps are started and operated, whether the vacuum pump operated at this stage is accurately started is detected within a first detection time period (for example, 10s), for example, the first vacuum pump is not started in the two-pump operation stage, at this time, the first vacuum pump is determined to be a failed vacuum pump, and the number of times of stopping the failed vacuum pump is accumulated to be 1. At this time, the second vacuum pump is not failed, so that under the action of the second vacuum pump, the real-time atmospheric pressure of the vacuum drawer still continues to drop until the vacuum drawer enters a pressure maintaining state, then the next period is entered, if it is still detected whether the first vacuum pump is accurately started at the stage of the operation of the first vacuum pump, if not, the number of times of stopping the failed vacuum pump is 1+ 1-2, and when M is 2, a failure prompt can be sent. When the drawer is not accurately started continuously for many times, in order to avoid influencing the vacuum effect of the drawer, at the moment, the other vacuum pump carries out vacuumizing operation on the vacuum drawer according to a preset single-pump operation mode, the single-pump operation mode is a common operation mode in the prior art, and the details are not repeated.
In the embodiment of the invention, when one vacuum pump fails, the other vacuum pump can still normally operate to ensure that the drawer keeps a vacuum environment, at least two fault judgments are carried out simultaneously, the misjudgments caused by the faults when the vacuum pumps are in poor contact are avoided, when the faults are judged for two times, the fact that the failed vacuum pump can not be normally used any more and needs to be replaced can be shown, and at the moment, prompt information is sent to remind a user.
Compared with the prior art, the refrigerator disclosed by the embodiment of the invention has the advantages that the first vacuum pump and the second vacuum pump are arranged in the vacuum drawer, the vacuum-pumping operation is carried out on the vacuum drawer by utilizing the double pumps, the vacuum-pumping time is shortened, and the vacuum drawer can quickly enter a vacuum environment. During vacuum pumping, the double pumps are controlled to be started simultaneously according to preset initial power, then in the running process of the double pumps, in order to avoid the problem of overlarge noise, the running states of the first vacuum pump and the second vacuum pump are controlled in stages according to the pressure difference between standard atmospheric pressure and real-time atmospheric pressure, the running powers of the first vacuum pump and the second vacuum pump are respectively adjusted, the double pumps stop working until the vacuum drawer enters a pressure maintaining state, and the noise is reduced as much as possible while the vacuum pumping time is shortened. The embodiment of the invention adopts the double vacuum pumps to vacuumize the vacuum drawer, reduces the vacuumizing time, and simultaneously adjusts the working power of the double vacuum pumps in stages, thereby avoiding the continuous high noise phenomenon caused by long-time high-power work of the double vacuum pumps.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A refrigerator, characterized by comprising:
the vacuum drawer comprises a box body, a drawer body and a vacuum module; the vacuum module is arranged on one side of the box body and comprises a first vacuum pump and a second vacuum pump which are used for vacuumizing the vacuum drawer;
the controller is configured to:
responding to a vacuumizing instruction of the vacuum drawer, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
acquiring standard atmospheric pressure outside the vacuum drawer and real-time atmospheric pressure inside the vacuum drawer, and calculating the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
and adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer enters a pressure maintaining state.
2. The refrigerator of claim 1, wherein said adjusting the power of said first vacuum pump and said second vacuum pump based on said air pressure differential comprises:
when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, adjusting the power of the first vacuum pump to be a first power, and adjusting the power of the second vacuum pump to be a second power;
when the air pressure difference is greater than or equal to the second air pressure and smaller than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
3. The refrigerator of claim 1, wherein the controller is further configured to:
before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and controlling the first initial power to be P11 and the second initial power to be P21 after the first vacuum pump and the second vacuum pump are started;
when the compressor or the fan is in an operating state, controlling the first initial power to be P12 and the second initial power to be P22 after the first vacuum pump and the second vacuum pump are started; wherein P11 > P12 and P21 > P22.
4. The refrigerator of claim 1, wherein, in response to the vacuum draw command, the controller is further configured to:
after the first vacuum pump and the second vacuum pump operate, acquiring the operating states of the first vacuum pump and the second vacuum pump after a preset detection time period;
if any vacuum pump of the first vacuum pump and the second vacuum pump does not work, determining that the non-working vacuum pump is a failure vacuum pump;
after the vacuumizing operation of the current period is finished, acquiring the historical running state of the fault vacuum pump in the historical period; each period at least comprises one stage state of a double-pump operation stage, a first vacuum pump operation stage only, a second vacuum pump operation stage only and a pressure maintaining stage;
determining the working stop times N of the fault vacuum pump according to the historical running state;
if N is larger than or equal to M, sending a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
5. The refrigerator according to claim 1, wherein the first vacuum pump and the second vacuum pump respectively include a vacuum pump body, a suction pipe, an exhaust pipe; one end of the exhaust pipe is communicated with the box body, the other end of the exhaust pipe is communicated with the vacuum pump body, one end of the exhaust pipe is communicated with the vacuum pump body, and the other end of the exhaust pipe is connected to the outside of the refrigerator.
6. A method of controlling a vacuum drawer for a refrigerator, the vacuum drawer including first and second vacuum pumps for performing a vacuum pumping operation thereon, the method comprising:
responding to a vacuumizing instruction of the vacuum drawer, controlling the first vacuum pump to operate according to a preset first initial power, and controlling the second vacuum pump to operate according to a preset second initial power;
acquiring standard atmospheric pressure outside the vacuum drawer and real-time atmospheric pressure inside the vacuum drawer, and calculating the atmospheric pressure difference between the standard atmospheric pressure and the real-time atmospheric pressure;
and adjusting the power of the first vacuum pump and the second vacuum pump according to the air pressure difference until the vacuum drawer enters a pressure maintaining state.
7. The method for controlling a vacuum drawer for a refrigerator as claimed in claim 6, wherein said adjusting the power of said first vacuum pump and said second vacuum pump according to said air pressure difference comprises:
when the air pressure difference is greater than or equal to a preset first air pressure and less than a preset second air pressure, adjusting the power of the first vacuum pump to be a first power, and adjusting the power of the second vacuum pump to be a second power;
when the air pressure difference is greater than or equal to the second air pressure and less than a preset third air pressure, adjusting the power of the first vacuum pump to be a third power, and controlling the second vacuum pump to stop working;
when the air pressure difference is equal to the third air pressure, controlling the first vacuum pump to stop working;
wherein the first power is less than the first initial power, the second power is less than the second initial power, and the third power is less than or equal to the first power.
8. The method of controlling a vacuum drawer for a refrigerator of claim 6, further comprising:
before the first vacuum pump and the second vacuum pump are started, detecting the working states of a compressor and a fan in the refrigerator;
when the compressor and the fan are both in a stop working state, controlling the compressor and the fan to keep in a stop working state during the operation of the first vacuum pump or the second vacuum pump, and controlling the first initial power to be P11 and the second initial power to be P21 after the first vacuum pump and the second vacuum pump are started;
when the compressor or the fan is in an operating state, controlling the first initial power to be P12 and the second initial power to be P22 after the first vacuum pump and the second vacuum pump are started; wherein P11 > P12 and P21 > P22.
9. The method of controlling a vacuum drawer for a refrigerator according to claim 6, wherein after responding to a vacuum command for the vacuum drawer, the method further comprises:
after the first vacuum pump and the second vacuum pump operate, acquiring the operating states of the first vacuum pump and the second vacuum pump after a preset detection time period;
if any vacuum pump of the first vacuum pump and the second vacuum pump does not work, determining that the non-working vacuum pump is a failure vacuum pump;
after the vacuumizing operation of the current period is finished, acquiring the historical running state of the fault vacuum pump in the historical period; wherein each cycle comprises at least one of a dual pump operating phase, a first vacuum pump operating phase only, a second vacuum pump operating phase only, and a dwell phase;
determining the working stop times N of the fault vacuum pump according to the historical running state;
if N is larger than or equal to M, sending a fault prompt; wherein M is more than or equal to 2, and N and M are positive integers.
10. The method for controlling a vacuum drawer for a refrigerator as claimed in claim 6, wherein the first vacuum pump and the second vacuum pump respectively comprise a vacuum pump body, a suction pipe, an exhaust pipe; one end of the exhaust pipe is communicated with the box body of the vacuum drawer, the other end of the exhaust pipe is communicated with the vacuum pump body, one end of the exhaust pipe is communicated with the vacuum pump body, and the other end of the exhaust pipe is connected to the outside of the refrigerator.
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| CN202210252904.8A CN114646168A (en) | 2022-03-15 | 2022-03-15 | Refrigerator and control method of vacuum drawer of refrigerator |
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| CN202210252904.8A CN114646168A (en) | 2022-03-15 | 2022-03-15 | Refrigerator and control method of vacuum drawer of refrigerator |
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| CN101144470A (en) * | 2006-09-12 | 2008-03-19 | 阿耐思特岩田株式会社 | Operation control device and method of vacuum pumps |
| CN111623580A (en) * | 2020-05-12 | 2020-09-04 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
| JP2020183738A (en) * | 2019-05-09 | 2020-11-12 | 株式会社アルバック | Vacuum evacuation apparatus and operation thereof |
| CN212106219U (en) * | 2019-12-11 | 2020-12-08 | 王冬 | Water suction pump for mine drainage |
| CN113586422A (en) * | 2021-08-25 | 2021-11-02 | 安徽智引力智慧水务有限公司 | Energy-saving method for power of step flow regulating pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144470A (en) * | 2006-09-12 | 2008-03-19 | 阿耐思特岩田株式会社 | Operation control device and method of vacuum pumps |
| JP2020183738A (en) * | 2019-05-09 | 2020-11-12 | 株式会社アルバック | Vacuum evacuation apparatus and operation thereof |
| CN212106219U (en) * | 2019-12-11 | 2020-12-08 | 王冬 | Water suction pump for mine drainage |
| CN111623580A (en) * | 2020-05-12 | 2020-09-04 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
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