CN114111195A - Refrigerator control method and refrigerator - Google Patents

Abstract

The invention provides a refrigerator and a control method thereof. The control method comprises the following steps: when the door body is opened, judging whether an air-conditioning membrane assembly of the air-conditioning fresh-keeping device works or not; if the controlled atmosphere module of the controlled atmosphere preservation device is in a working state, the controlled atmosphere module of the controlled atmosphere preservation device is suspended to work; when the door body is closed, detecting whether a controlled atmosphere membrane component of the controlled atmosphere preservation device is in a state of suspending working; if the controlled atmosphere module of the controlled atmosphere preservation device is in a pause working state, the controlled atmosphere module of the controlled atmosphere preservation device continues to work; if the controlled atmosphere module of the controlled atmosphere preservation device is in a shutdown state, detecting whether the controlled atmosphere preservation device is opened; if the controlled atmosphere preservation device is opened, after the door body is closed for a first preset time, when a compressor of the refrigerator is stopped, the controlled atmosphere film assembly of the controlled atmosphere preservation device is in a working state; otherwise, the controlled atmosphere membrane component of the controlled atmosphere preservation device is in a working state every second preset time after the door body is closed.

Description

Refrigerator control method and refrigerator

Technical Field

The invention relates to the technical field of cold storage and frozen storage, in particular to a control method of a refrigerator and the refrigerator.

Background

The refrigerator is a refrigerating device for keeping constant low temperature, and is a civil product for keeping food or other articles in a constant low-temperature cold state. With the improvement of living standard of people, a new height is provided for the preservation of food materials, and the preservation of food is more urgent. Most refrigerators in the market at present only have basic food material cold storage and freezing storage functions, food material preservation is not distinguished in detail, and the preservation function cannot meet the requirements of customers. Some refrigerators have independent fresh-keeping chambers, but the temperature range is single, and only one type of food can be placed in the refrigerator. Some complaints that the fresh-keeping requirement of the food materials for the customers cannot be met are frequently heard.

Disclosure of Invention

The invention aims to overcome at least one defect of the existing refrigerator for fresh keeping, and provides a novel refrigerator, so that the refrigerator is provided with at least more than two air-conditioning chambers, each air-conditioning chamber is provided with a respective air-conditioning film unit, and each air-conditioning chamber is provided with a temperature value range, thereby realizing the fresh keeping requirements of different food materials. Based on the above, the invention also provides a control method applicable to the novel refrigerator.

On one hand, the invention provides a control method of a refrigerator, wherein the refrigerator comprises a refrigerator body, a door body, an air-conditioning preservation device and an air exhaust device, wherein a storage chamber is arranged in the refrigerator body, the air-conditioning preservation device is arranged in the storage chamber, a preservation space is limited in the air-conditioning preservation device, and the air-conditioning preservation device comprises an air-conditioning membrane component communicated with the air exhaust device; the door body is configured to open and close the storage compartment; the control method of the refrigerator comprises the following steps:

detecting whether the door body is opened or not;

when the door body is opened, judging whether the air-conditioning membrane assembly of the air-conditioning preservation device works or not; if the controlled atmosphere module of the controlled atmosphere preservation device is in a working state, the controlled atmosphere module of the controlled atmosphere preservation device is suspended to work; the air exhaust device works to enable more oxygen in the fresh-keeping space to enter the air exhaust device through the air-conditioning membrane component relative to nitrogen in the fresh-keeping space, so that the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a working state;

when the door body is closed, detecting whether a controlled atmosphere membrane component of the controlled atmosphere preservation device is in a state of suspending working; if the controlled atmosphere module of the controlled atmosphere preservation device is in a pause working state, the controlled atmosphere module of the controlled atmosphere preservation device continues to work so as to enable the controlled atmosphere module of the controlled atmosphere preservation device to completely work once; if the controlled atmosphere module of the controlled atmosphere preservation device is in a shutdown state, detecting whether the controlled atmosphere preservation device is opened;

if the controlled atmosphere preservation device is opened, after the door body is closed for a first preset time, when a compressor of the refrigerator is stopped, the controlled atmosphere component of the controlled atmosphere preservation device is in a working state and works completely for one time; otherwise, after the door body is closed, the controlled atmosphere membrane assembly of the controlled atmosphere preservation device is in a working state and works completely once every second preset time, wherein the second preset time is longer than the first preset time.

Optionally, the storage compartment is provided with a plurality of storage compartments, the door bodies are provided with a plurality of storage compartments, each storage compartment is provided with a storage compartment, and each door body is configured to open or close one storage compartment; the refrigerator also comprises a gas path connecting device, the gas path connecting device is provided with a plurality of inlets and an outlet, each gas regulating membrane module is communicated with one inlet of the gas path connecting device, and the outlet of the gas path connecting device is communicated with the air suction opening; the gas path connecting device is a control valve so as to controllably conduct the pumping hole and one or more of the oxygen-enriched gas collecting cavities.

Optionally, one of the controlled atmosphere modules is disconnected from the air extraction device through the air path connection device, so that the controlled atmosphere module of the controlled atmosphere preservation device is in a stop state or in a pause state;

and stopping working after the air-conditioning membrane assemblies of each air-conditioning preservation device work for a corresponding preset time period in an accumulated mode, so that the air-conditioning membrane assemblies of the air-conditioning preservation devices work completely once.

Optionally, the control method of the refrigerator further includes:

detecting whether the refrigerator is powered on for the first time;

if the refrigerator is powered on for the first time, detecting whether a compressor of the refrigerator works, and if the compressor is in a stop state, starting the air extraction device and enabling the modified atmosphere components of the modified atmosphere preservation devices to work sequentially and completely once through the air path connecting device;

and if the refrigerator is not powered on for the first time, detecting whether the door body is opened or not.

Optionally, the preset storage temperature in at least one of the fresh-keeping spaces is different from the preset storage temperature in the rest of the fresh-keeping spaces;

the modified atmosphere components of the plurality of modified atmosphere preservation devices sequentially and completely work once according to the sequence of the preset storage temperature in the preservation space.

On the other hand, the invention also provides a refrigerator, which comprises a refrigerator body, wherein the refrigerator body is internally provided with a storage compartment and a compressor bin, and further comprises an air extracting device, an air path connecting device and a plurality of air-conditioning fresh-keeping devices, wherein each air-conditioning fresh-keeping device comprises a storage container and an air-conditioning membrane assembly;

a fresh-keeping space is limited in each storage container, and a plurality of storage containers are arranged in the storage room; the preset storage temperature in at least one storage container is different from the preset storage temperature in the rest storage containers;

each gas-regulating membrane module is arranged in the corresponding storage container, the space around the gas-regulating membrane module is communicated with the corresponding fresh-keeping space, each gas-regulating membrane module is provided with at least one gas-regulating membrane and one oxygen-enriched gas collecting cavity, and the gas-regulating membrane modules are configured to enable oxygen in airflow around the gas-regulating membrane module to penetrate through the gas-regulating membrane more than nitrogen in the airflow around the gas-regulating membrane module into the oxygen-enriched gas collecting cavity, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space than nitrogen in the airflow;

the air extracting device is arranged in the compressor bin and is provided with an air extracting opening, the air path connecting device is provided with a plurality of inlets and an outlet, each oxygen-enriched gas collecting cavity is communicated with one inlet of the air path connecting device, and the outlet of the air path connecting device is communicated with the air extracting opening;

the gas circuit connecting device is arranged in the compressor bin and close to the air extracting device, or the gas circuit connecting device is integrated on the air extracting device.

Optionally, the gas path connecting device is a three-way joint, or the gas path connecting device is a control valve to controllably communicate the pumping port with one or more of the oxygen-enriched gas collecting chambers.

Optionally, the number of the storage compartments is at least two, and the storage compartments include a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices include a first controlled atmosphere preservation device arranged in the first storage compartment and a second controlled atmosphere preservation device arranged in the second storage compartment;

the first storage chamber is a refrigerating chamber, and the second storage chamber is a freezing chamber.

Optionally, the refrigerator further comprises a plurality of moisture permeable devices, a communication port is arranged at the rear part of the upper surface of the modified atmosphere preservation device, each moisture permeable device is installed at the communication port of one modified atmosphere preservation device, and the moisture permeable device is provided with a moisture permeable film, so that moisture in the preservation space can permeate to the outside of the preservation space in a single direction through the moisture permeable film.

Optionally, the refrigerator further comprises a plurality of air supply devices and a plurality of air guide devices, the air supply devices are vortex fans or centrifugal fans, each air supply device is arranged in the storage compartment and above one air conditioning and fresh keeping device, and an air inlet of each air supply device faces to part or all of the corresponding moisture permeable film; the rear wall of the storage compartment is provided with a plurality of air supply outlets, each air guide device is arranged on the upper side of one controlled atmosphere preservation device, the rear end of each air guide device is connected with the corresponding air supply outlet, and the air guide devices are configured to supply air to at least the front part and/or the front part of the controlled atmosphere preservation device;

the lower surface of the air guide device is provided with a yielding groove extending along the front-back direction, and the air supply device is installed at the rear end of the yielding groove;

the upper limiting surface of the abdicating groove is obliquely arranged, the front end of the upper limiting surface is connected to the lower surface of the air guide device, and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface.

In the refrigerator and the control method, the refrigerator is provided with at least more than two air-conditioning preservation devices, namely at least more than two air-conditioning chambers, each air-conditioning chamber is provided with the air-conditioning membrane component, and each air-conditioning chamber is provided with the temperature value range, so that the preservation requirements of different food materials are met.

Furthermore, at least more than two air-conditioning preservation devices share one set of air extraction device, so that the product cost is reduced to the minimum while the preservation requirement is met. And the gas circuit connecting devices such as a three-way joint or a controllable three-way valve are adopted for gas circuit connection, so that the structure is simple, and the production operation is convenient. The special installation position of the gas circuit connecting device can enable the refrigerator to be compact in structure and reasonable in layout, namely, the refrigerator can be flexibly arranged according to the actual condition of the refrigerator, the internal space of the refrigerator is reasonably utilized, the volume ratio of the refrigerator is improved as much as possible, meanwhile, the optimal arrangement position is achieved, and the product cost is saved.

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 front view of a refrigerator according to one embodiment of the present invention;

FIG. 2 is a schematic side view of a refrigerator according to one embodiment of the present invention;

fig. 3 is a schematic front view of a partial structure of a refrigerator according to one embodiment of the present invention;

fig. 4 is a schematic rear view of a partial structure of a refrigerator according to one embodiment of the present invention;

FIG. 5 is a schematic rear view of a partial structure of a refrigerator according to one embodiment of the present invention

FIG. 6 is a schematic structural view of a refreshing apparatus in a refrigerator according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of the modified atmosphere preservation apparatus shown in FIG. 6;

FIG. 8 is a schematic exploded view of the modified atmosphere preservation apparatus shown in FIG. 6;

FIG. 9 is a schematic sealing diagram of the modified atmosphere preservation apparatus shown in FIG. 6;

FIG. 10 is a schematic partial block diagram of the air extractor in the refrigerator of FIG. 1;

fig. 11 is a schematic flowchart of a control method of a refrigerator according to one embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic front view of a refrigerator according to one embodiment of the present invention. As shown in fig. 1 and referring to fig. 2 to 5, an embodiment of the present invention provides a refrigerator. The refrigerator comprises a refrigerator body 20, a plurality of air-conditioning preservation devices 30 and a refrigerating system.

A storage chamber is arranged in the box body 20, and a door body is arranged at an opening of the storage chamber to open and close the storage chamber. For example, the refrigerator 20 includes a refrigerating compartment 21, a freezing compartment 22, and a temperature-changing compartment 23. The storage temperature of the refrigerated compartment 21 is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. The temperature in the freezer compartment 22 typically ranges from-14 ℃ to-22 ℃. The temperature-changing chamber 23 can be adjusted as required to store suitable food, and optionally, the temperature-changing chamber 23 has a temperature ranging from-24 ℃ to 10 ℃. Preferably, the temperature of the temperature-changing compartment 23 varies in the range of-8 ℃ to 0 ℃. The refrigerating system is configured to provide cold energy to the storage compartment and can be composed of a compressor, a condenser, a throttling device, an evaporator and the like.

As shown in fig. 1, each modified atmosphere preservation device 30 may include a storage vessel and a modified atmosphere module 42. A fresh-keeping space is limited in each storage container. A plurality of storing containers set up in the storing room, and the storing temperature of predetermineeing in at least one storing container is different with the storing temperature of predetermineeing in the remaining storing container. For example, the storage compartments are multiple, the controlled atmosphere preservation devices 30 are respectively arranged in the storage compartments, and the preset temperature in each storage compartment can be different, so that the preset storage temperature in the controlled atmosphere preservation devices 30 is different. For another example, the storage compartments include at least two storage compartments, including a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices 30 are respectively disposed in the first storage compartment and the second storage compartment. Further, the first storage compartment may be a refrigerating compartment 21, and the second storage compartment may be a temperature-changing compartment 23 or a freezing compartment 22. For example, a plurality of storage containers may be disposed in one storage compartment, but the preset storage temperatures in the plurality of storage containers are different.

Each gas-modified membrane module 42 is mounted to a corresponding storage container and the space around the gas-modified membrane module 42 is in communication with a corresponding fresh-keeping space, each gas-modified membrane module 42 having at least one gas-modified membrane and one oxygen-enriched gas collection chamber and being configured such that more oxygen in the gas stream in the space around the gas-modified membrane module 42 permeates the gas-modified membrane into the oxygen-enriched gas collection chamber than nitrogen therein, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space than nitrogen.

In the embodiment of the present invention, the preservation requirements of different food materials are realized by having at least two or more modified atmosphere devices 30, i.e. at least two or more modified atmosphere chambers, each modified atmosphere chamber has its own modified atmosphere module 42, and each modified atmosphere chamber has its own temperature value range.

Preferably, in this embodiment, the refrigerator further comprises a gas extraction device 70 and a gas path connecting device 80, the gas extraction device 70 is provided with a gas extraction opening, and each oxygen-enriched gas collection chamber is communicated with the gas extraction opening through the outlet pipeline 34 and the gas path connecting device 80. Specifically, the gas path connection device 80 has a plurality of inlets and an outlet, and each oxygen-enriched gas collection chamber is communicated with one inlet of the gas path connection device 80. The outlet of the air passage connecting device 80 is communicated with the air suction port through a pipeline 81. Further optionally, the gas path connection device 80 is a three-way joint, that is, the pumping port is communicated with the plurality of oxygen-enriched gas collection chambers through the three-way joint. Further preferably, the gas path connecting device 80 is a control valve, i.e. the pumping port is controllably communicated with the plurality of oxygen-enriched gas collecting cavities through the control valve. At least more than two air-conditioning preservation devices 30 share one set of air extraction device 70, so that the product cost is reduced to the minimum while the preservation requirement is met. And the three-way joint or the controllable three-way valve is adopted for gas circuit connection, so that the structure is simple, and the production operation is convenient.

Further, a compressor bin for placing a compressor is further arranged inside the box body, and the air extraction device 70 is arranged in the compressor bin. The air passage connecting device 80 can be installed in the storage room and is positioned behind an air conditioning and fresh keeping device, in a heat preservation layer of the box body or in a compressor bin arranged in the box body. The special installation position of the air path connecting device 80 can make the refrigerator compact in structure and reasonable in layout. In other words, the refrigerator can be flexibly arranged according to the actual condition of the refrigerator, the internal space of the refrigerator is reasonably utilized, the volume ratio of the refrigerator is improved as much as possible, meanwhile, the optimal arrangement position is realized, and the product cost is saved. Preferably, as shown in FIG. 4, an air passage connection 80 may be mounted within the compressor compartment adjacent to the air extraction device 70, and more preferably, as shown in FIG. 5, the air passage connection 80 is integrated with the air extraction device 70.

When the air extracting device 70 in the compressor bin works and the three-way joint is used for air extraction control, the air-conditioning membrane module 42 in the refrigerating chamber and the air-conditioning membrane module 42 in the low-temperature chamber are simultaneously extracted, and the working time determines the air extraction time according to the fact that the air extraction time required in the air-conditioning membrane module 42 in the refrigerating chamber and the air-conditioning membrane module 42 in the low-temperature chamber is longer, so that the air extraction quality is ensured, and the preservation requirement is met. When the control valve is used for air suction control, the air-conditioning membrane assembly 42 in the refrigerating chamber and the air-conditioning membrane assembly 42 in the low-temperature chamber are simultaneously sucked, and the working time is controlled by the control valve according to the air suction time required in the air-conditioning membrane assembly 42 in the refrigerating chamber and the low-temperature air-conditioning membrane assembly 42, so that the air suction quality is ensured, and the preservation requirement is met. The temperature of each fresh-keeping chamber is different, for example, the temperature in the cold storage chamber 21 is set to be 5-8 ℃, which is beneficial to the fresh-keeping requirements of fruits, vegetables and the like; the temperature in the low-temperature chamber, such as the variable-temperature chamber 23, is set to be 0-minus 3 ℃, which is favorable for the fresh-keeping requirement of food materials such as meat, seafood and the like.

In some embodiments of the invention, the plurality of modified atmosphere devices 30 includes a first modified atmosphere device 31 disposed in the first storage compartment and a second modified atmosphere device 32 disposed in the second storage compartment. The first storage compartment is positioned above the second storage compartment, and the first modified atmosphere preservation device 31 is positioned above the second modified atmosphere preservation device 32.

In some embodiments of the present invention, the refrigerator may further include a plurality of moisture permeation devices 41 and a plurality of air blowing devices. The atmosphere-controlled fresh-keeping device 30 is internally limited with a fresh-keeping space, and the rear part of the upper surface of the atmosphere-controlled fresh-keeping device 30 is provided with a communication port. The moisture permeable device 41 can be installed at the communication port, and the moisture permeable device 41 has a moisture permeable film so as to make moisture flow in a single direction, and when the humidity in the fresh keeping space is greater than the humidity outside the fresh keeping space, the moisture in the fresh keeping space flows out of the fresh keeping space through the moisture permeable film. That is to say, the moisture permeable film makes the moisture in the fresh-keeping space unidirectionally permeate to the outside of the fresh-keeping space through the moisture permeable film, so that the fresh-keeping space has the humidity meeting the requirement.

The air supply device can be a vortex fan 50 or a centrifugal fan, the air supply device is arranged in the storage room and is positioned above a corresponding air conditioning and fresh keeping device 30, and the air inlet of the vortex fan 50 or the centrifugal fan faces to part or all of the corresponding moisture permeable film. When the air supply device is started, the air flow outside the air-conditioned freshness retaining device 30 can be accelerated, particularly the air flow outside the moisture permeable device 41 is accelerated, the air circulation near the moisture permeable device 41 is accelerated, the humidity value outside the air-conditioned freshness retaining device 30 is reduced, the phenomenon that the moisture permeable film efficiency is reduced or completely loses efficacy to enable the water vapor in the freshness retaining space to be incapable of being discharged is prevented, the moisture permeable efficiency is improved, frosting is further prevented, and the intelligent degree are high. Because have and pass through wet device and vortex fan or centrifugal fan, vortex fan or centrifugal fan's air intake can be towards the moisture permeable membrane, can accelerate the fresh-keeping device of gas conditioning outside air flow, reduce the fresh-keeping device outside humidity value of gas conditioning, especially the humidity value in the moisture permeable membrane outside, form great humidity difference, prevent that moisture permeable membrane efficiency reduces or the complete inefficacy makes the inside steam in fresh-keeping space unable discharge, improve and pass through wet efficiency, and then reduce the steam that the edible material produced and gather in inside and form condensation or frost, also can make the indoor temperature of storing room distribute evenly as soon as possible simultaneously, it is intelligent, the intelligent degree is high.

In some embodiments of the present invention, as shown in fig. 6, 7 and 8, the refrigerator further includes a plurality of wind guide devices 60. An air supply outlet 24 can be arranged on the rear wall of each storage chamber, and an air return outlet 25 is arranged at the lower part of the rear wall of each storage chamber and used for refrigerating airflow circulation in the storage chamber. The return air opening 25 is located below the supply air opening 24. The air guide device 60 is arranged on the upper side of the air-conditioning preservation device 30, the rear end of the air guide device 60 is connected to the air supply outlet 24, and the air guide device 60 is configured to supply air to at least the front part and/or the front part of the air-conditioning preservation device 30. The air guide device 60 guides the air flow to the front part, so that the rear wall of the cold air direct-blowing controlled atmosphere fresh-keeping device 30 can be prevented, the frosting formed on the inner wall surface due to too low local temperature of the rear wall surface is prevented, the user experience is influenced, and the condition that the frosting is caused by the fact that the air supply is not directly blown to the rear wall surface of the drawer can be guaranteed. Further, the air guiding device 60 is spaced from the upper surface of the air-conditioning and freshness-retaining device 30, so that the air flow can flow around the air-conditioning and freshness-retaining device 30 in the storage compartment.

In some embodiments of the invention, the modified atmosphere module 42 is preferably disposed on the front side of the moisture permeable device 41. The lower surface of the air guide device 60 is provided with a yielding groove 61 extending in the front-rear direction, and the vortex fan 50 or the centrifugal fan is mounted at the rear end of the yielding groove 61. The structure is compact, the volume is small, and the air flow of the air supply device is convenient to blow. The outlet of the vortex fan 50 or the centrifugal fan may face forward. Further, the upper limiting surface of the relief groove 61 is disposed obliquely, the front end of the upper limiting surface is connected to the lower surface of the air guiding device 60, and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface. An air guide duct communicating with the air supply opening 24 is provided in the air guide device 60, and a plurality of outlets are provided on the lower surface of the air guide device 60 and/or a plurality of outlets are provided on the front surface of the air guide device 60. For example, the air guide device 60 has a bottom plate defining an air guide duct and a front grill provided at a front end of the bottom plate. The bottom plate is provided with a yielding groove 61, an outlet is formed in the bottom plate, the front grating is vertically arranged, and the grating holes are outlets. The special arrangement form of the flow fan or the centrifugal fan and the abdicating groove can lead the storage chamber to have compact structure, reasonable layout, convenient airflow flowing and low noise, and brings people comfortable feeling.

In some embodiments of the present invention, the storage container of the modified atmosphere preservation apparatus 30 includes a drawer 31 and an upper cover 32, the drawer 31 being slidably mounted in the storage compartment by a slide rail assembly 39, the upper cover 32 being configured to seal an upper opening of the drawer 31. For the convenience of taking and closing the drawer 31, the modified atmosphere preservation device 30 further comprises a lifting device, the upper cover 32 is arranged on the upper side of the drawer 31 in a vertically movable manner, and the drawer 31 is configured to drive the upper cover 32 to descend through the lifting device when moving backwards so as to close the drawer 31. The moisture permeation device 41 and the air conditioning membrane module 42 are mounted on the upper cover 32.

In some embodiments of the present invention, the refrigerator may further include a humidity detection device configured to detect a humidity inside the fresh food space and/or a humidity outside the fresh food space and inside the storage compartment. The vortex fan 50 or the centrifugal fan is configured to be activated according to the humidity value detected by the humidity detecting means. For example, the humidity detection means includes a first humidity detection means and a second humidity detection means. First humidity detection device sets up in fresh-keeping space, detects the humidity in the fresh-keeping space and obtains first humidity value. The second humidity detection device is arranged outside the fresh-keeping space and in the storage room, and the humidity outside the fresh-keeping space and in the storage room is detected to obtain a second humidity value. The vortex fan 50 or the centrifugal fan may be configured to turn on when a difference between the first humidity value and the second humidity value is less than or equal to a first preset value, and turn off until a difference between the first humidity value and the second humidity value is less than a second preset value. The second preset value is smaller than the first preset value.

When the humidity sensor is used specifically, whether the difference value between the first humidity value and the second humidity value is larger than a first preset value or not is judged. If not, the vortex fan 50 or the centrifugal fan is started, and if so, the vortex fan 50 or the centrifugal fan is not started. And further, continuously judging whether the difference value between the first humidity value and the second humidity value is smaller than a second preset value, wherein the second preset value is smaller than the first preset value. If so, the vortex fan 50 or the centrifugal fan is turned off. Otherwise, the vortex fan 50 or the centrifugal fan is kept in operation. The opening of the vortex fan 50 or the centrifugal fan is controlled according to the difference value between the first humidity value and the second humidity value, when the moisture permeation device 41 conducts moisture unidirectional permeation work, the humidity in the fresh-keeping space is gradually reduced, the external humidity is gradually increased, the difference value between the two is smaller and smaller, and when the difference value is smaller than or equal to a first preset value, the vortex fan 50 or the centrifugal fan is opened, and the moisture permeation efficiency is improved. Further, the humidity in the fresh-keeping space is gradually reduced again, the external humidity is reduced under the action of the vortex fan 50 or the centrifugal fan, then the reduced humidity is unchanged on the basis, the reduced humidity or the increased speed is reduced, and finally the difference between the inside and the outside of the fresh-keeping space is smaller and smaller, when the difference between the humidity in the fresh-keeping space and the humidity outside is smaller, the humidity in the fresh-keeping space can be considered to be reduced, the requirement is met, the difference between the inside and the outside is not enough to enable the moisture permeable device 41 to work, the vortex fan 50 or the centrifugal fan is stopped, and energy is saved.

It should be noted that, for some reason, for example, when the humidity in the storage compartment is suddenly increased, the vortex fan 50 or the centrifugal fan may be in the off state, if the difference between the first humidity value and the second humidity value is smaller than the first preset value, or even smaller than the second preset value, the vortex fan 50 or the centrifugal fan is started first, and after the vortex fan 50 or the centrifugal fan is started, the humidity value outside the fresh-keeping space is obviously reduced, so as to ensure the moisture permeation efficiency of the moisture permeation device 41. Optionally, in order to further improve the control accuracy and prevent the misoperation caused by the condition that the humidity inside and outside the fresh-keeping space is relatively high, when judging whether the difference value between the first humidity value and the second humidity value is smaller than the second preset value, judging whether the first humidity value is larger than the preset humidity value; and when the difference value between the first humidity value and the second humidity value is smaller than a second preset value, and the first humidity value is smaller than or equal to the preset humidity value, the vortex fan 50 or the centrifugal fan is closed.

In some embodiments of the invention, the storage container of the modified atmosphere preservation apparatus 30 further comprises a barrel 38 having a forward opening, the drawer 31 is movably mounted in the barrel 38 in a forward and backward direction, and the barrel 38 is mounted in the storage compartment. The upper wall of the cylinder 38 has the floor and the front grill of the air guide device 60, i.e., the floor and the front grill may be integrally formed and serve as the upper wall of the cylinder. Further, the box 20 further includes an upper outer cover plate 35 and a lower outer cover plate 36, the upper outer cover plate 35 and the lower outer cover plate 36 define the storage compartment, the upper outer cover plate 35 covers the upper side, the left side, the right side, and the rear side of the cylinder 38, and defines an air guide duct of the air guide device 60 with the upper wall of the cylinder 38. The air guide device 60 may be said to include the upper outer cover 35 and the upper wall of the cylinder 38. The lower outer cover plate 36 is provided to the remaining portions of the lower, left and right sides and rear side of the cylinder 38.

In some embodiments of the present invention, as shown in fig. 8 and 9, the lifting device includes a lifting bracket 71, a connecting bracket 72, a spring 73, a roller 74, and a pressing table 75.

The elevating bracket 71 is mounted on the cylinder 38, the connecting frame 72 is mounted on the elevating bracket 71 to be movable up and down, the upper cover 32 is mounted on the connecting frame 72, the spring 73 is used for urging the connecting frame 72 to move up, and the roller 74 is rotatably mounted on the lower end of the connecting frame 72 along the axis extending in the left-right direction. The pressing platform 75 is disposed on a side wall of the drawer, and is used for gradually moving the roller 74 downwards along the inclined side surface of the pressing platform 75 during the inward movement of the drawer 31, so as to drive the upper cover 32 to move downwards for sealing. After the drawer 31 is completely pushed into the cylinder 38, the roller 74 is located at a lower side of the lower horizontal surface of the pressing table 75 to keep the upper cover 32 in a state of closing the drawer 31, or to keep the upper cover 32 in a state of closing the cylinder 38, thereby keeping the drawer 31 closed.

In some embodiments of the invention, as shown in FIG. 10, the refrigerator also includes an exhaust tube 93, the suction device 70 also includes a pump head 91 having a pump outlet, and a motor including a motor housing 92. An exhaust tube 93 is wound around the motor housing 92, and an inlet of the exhaust tube 93 communicates with an outlet of the pump on the pump head 91. Specifically the inlet of the exhaust pipe 93 communicates with the outlet of the pump through a flexible pipe 94. The flexible tube 94 may be a plastic tube. Specifically, air exhaust device 70 is the vacuum pump, and the vacuum pump generates heat and concentrates on the motor part, also is the key position of cooling, connects exhaust pipe 93 at the pump of vacuum pump for the export plastic pipe, and the cold air passes through exhaust pipe 93 and realizes the motor temperature reduction through the temperature conduction, and the high-speed air passes through exhaust pipe 93 and forces the convection current to realize the motor temperature reduction, falls the noise through the total length realization of extension exhaust.

Further, the refrigerator further includes a bimetal heat conduction device 95, the motor housing 92 and the pump head 91 are both thermally connected to the bimetal heat conduction device 95, and the bimetal heat conduction device 95 is configured to transfer heat generated by the motor to the pump head 91 and disconnect the heat transfer after the temperature of the pump head 91 reaches a preset temperature. By arranging the bimetallic strip heat conduction device 95, when the temperature of the pump head 91 is low, the pump head 91 is connected with the motor shell 92, and the pump head 91 is prevented from frosting and freezing by utilizing the high-temperature heating of the pump head 91; when the pump head 91 is hot, the heat transfer is disconnected, preventing that high temperature from continuing to heat the pump head 91 on the motor. After the temperature is reduced, the bimetal thermal device 95 is reset for heat transfer. The bimetallic strip heat conducting device 95 is utilized, so that the structure is simple, the cost is low, and the service life is long. Further, the motor shell 92 is directly used for cooling, the structure of the motor and the air exhaust device 70 is not changed, the practicability is high, and the cost is low. In some embodiments of the present invention, the exhaust tube 93 is made of a heat conductive material, and the bimetal heat conducting device 95 is thermally connected to the motor housing 92 through the exhaust tube 93. Specifically, the exhaust pipe 93 includes an inlet pipe section, a winding pipe section, and an outlet pipe section, the inlet pipe section and the outlet pipe section being connected to both ends of the winding pipe section, the winding pipe section being wound around the motor case 92. The bimetallic strip thermal conductor 95 is thermally connected to the end of the outlet pipe section which is connected to the wound pipe section. For example, the exhaust pipe 93 is provided with a metal plate 96, and the metal plate 96 is thermally connected to the bimetal thermal conduction device 95. The heat is transferred through the exhaust pipe 93, so that the temperature of the pump head 91 is not increased too fast or too high, the temperature of the pump head 91 is not changed frequently, the bimetallic strip heat conducting device 95 is not operated frequently, and the service life and the performance of the pump head 91 are not affected.

By arranging the temperature control type heat conduction device, when the temperature of the pump head is low, the pump head is prevented from frosting and freezing by utilizing high-temperature heating generated by the motor; when the pump head temperature is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head. The pump head can be prevented or frosted, the performance of the vacuum pump is guaranteed, and the reliability of the vacuum pump is prolonged. The pump mouth is connected the blast pipe, and the motor temperature reduction is realized through temperature conduction to the cold air through the blast pipe, and the motor temperature reduction is realized through blast pipe forced convection to the high-speed air, falls the noise through the realization of extension exhaust total length. The service life of the air exhaust device is prevented from being influenced by the overhigh temperature of the motor, the noise generated by the air exhaust device can be reduced, and the user experience effect is improved. The temperature control type heat conduction device can also prevent the heat dissipation effect of the motor from being influenced by continuously heating the pump head.

The present invention also provides a control method of a refrigerator, fig. 11 is a schematic flowchart of the control method of the refrigerator according to an embodiment of the present invention, and as shown in fig. 11, the control method of the refrigerator includes:

s101: and detecting whether the door body is opened. When the door body is opened, the process proceeds to S102: judging whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 works; if the modified atmosphere module of the modified atmosphere preservation device 30 is in the working state, the process goes to S103: the operation of the gas-regulating membrane component of the gas-regulating fresh-keeping device 30 is suspended. Wherein, the air extracting device 70 is operated to make more oxygen in the fresh-keeping space enter the air extracting device 70 than nitrogen in the fresh-keeping space through the air-conditioning membrane module, so that the air-conditioning membrane module of the air-conditioning fresh-keeping device 30 is in an operating state.

When the door is closed, the process proceeds to S104: detecting whether the controlled atmosphere component of the controlled atmosphere preservation device 30 is in a pause state; if the controlled atmosphere module of the controlled atmosphere preservation device 30 is in the pause working state, the process goes to S105: the controlled atmosphere component of the controlled atmosphere preservation device 30 continues to work, so that the controlled atmosphere component of the controlled atmosphere preservation device completely works once; if the controlled atmosphere module of the controlled atmosphere preservation device 30 is in a shutdown state, the process goes to S106: detecting whether the controlled atmosphere preservation device 30 is opened;

if the modified atmosphere preservation device 30 is opened, the process proceeds to S107: after the door body is closed for a first preset time, when a compressor of the refrigerator stops, the controlled atmosphere membrane assembly of the controlled atmosphere preservation device 30 is in a working state and works completely once; otherwise, go to S108: after the door body is closed, the controlled atmosphere membrane assembly of the controlled atmosphere preservation device 30 is in a working state and works completely once every second preset time. The second preset time is greater than the first preset time. The cold energy in the air-conditioning fresh-keeping device 30 can be conveniently stored, the food preservation effect is good, and the refrigerator energy efficiency is high. The first predetermined time may be 25min to 35min, such as 28min, 30min, 32min, etc. The second preset time may be 4h to 5h, for example 4.5 h.

In some embodiments of the present invention, when there are a plurality of modified atmosphere preservation devices 30, a plurality of storage compartments, and a plurality of door bodies, each modified atmosphere preservation device 30 is installed in one storage compartment, and each door body is configured to open or close one storage compartment, the plurality of modified atmosphere preservation devices 30 can be controlled in a unified manner. Alternatively, each controlled atmosphere preservation device 30 can be controlled individually, and one controlled atmosphere module is disconnected from the air extractor 70 by the air passage connecting device 80, so that the controlled atmosphere modules of the controlled atmosphere preservation device 30 are in a stop state or in a pause state. That is, when the modified atmosphere module does not operate, the air extracting device 70 can be in an operating state. The air-conditioning membrane assemblies of each air-conditioning preservation device 30 stop working after accumulating working for a corresponding preset time so that the air-conditioning membrane assemblies of the air-conditioning preservation device 30 completely work once.

In some embodiments of the present invention, the control method of the refrigerator further includes: s201: whether the refrigerator is powered on for the first time is detected. If the refrigerator is powered on for the first time, the step S202 is carried out: detecting whether a compressor of the refrigerator works, if the compressor is in a stop state, starting the air extraction device 70 and enabling the air-conditioning membrane assemblies of the air-conditioning preservation devices 30 to work sequentially and completely once through the air path connecting device 80; and if the refrigerator is not powered on for the first time, detecting whether the door body is opened or not. Further, the preset storage temperature in at least one fresh-keeping space is different from the preset storage temperature in the rest fresh-keeping spaces. The controlled atmosphere components of the controlled atmosphere preservation devices 30 sequentially and completely work once according to the sequence of the preset storage temperature in the preservation space. For example, if the plurality of modified atmosphere preservation devices include the first modified atmosphere preservation device 31 and the second modified atmosphere preservation device 32, the step of starting the air extraction device 70 and enabling the modified atmosphere modules of the plurality of modified atmosphere preservation devices 30 to sequentially operate through the air passage connecting device 80 includes step S203: firstly, enabling the controlled atmosphere membrane component of the first controlled atmosphere preservation device 31 to work for a corresponding preset time, and S204: and then the controlled atmosphere module of the second controlled atmosphere preservation device 32 is operated for a corresponding preset time. The control method of the refrigerator enables the cold quantity and the controlled atmosphere to be perfectly matched, and can carry out maximum fresh keeping.

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 (10)

1. The control method of the refrigerator is characterized in that the refrigerator comprises a refrigerator body, a door body, an air-conditioning preservation device and an air exhaust device, wherein a storage chamber is arranged in the refrigerator body, the air-conditioning preservation device is arranged in the storage chamber, a preservation space is limited in the air-conditioning preservation device, and the air-conditioning preservation device comprises an air-conditioning membrane component communicated with the air exhaust device; the door body is configured to open and close the storage compartment; the control method of the refrigerator comprises the following steps:

detecting whether the door body is opened or not;

when the door body is opened, judging whether the air-conditioning membrane assembly of the air-conditioning preservation device works or not; if the controlled atmosphere module of the controlled atmosphere preservation device is in a working state, the controlled atmosphere module of the controlled atmosphere preservation device is suspended to work; the air exhaust device works to enable more oxygen in the fresh-keeping space to enter the air exhaust device through the air-conditioning membrane component relative to nitrogen in the fresh-keeping space, so that the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a working state;

when the door body is closed, detecting whether a controlled atmosphere membrane component of the controlled atmosphere preservation device is in a state of suspending working; if the controlled atmosphere module of the controlled atmosphere preservation device is in a pause working state, the controlled atmosphere module of the controlled atmosphere preservation device continues to work so as to enable the controlled atmosphere module of the controlled atmosphere preservation device to completely work once; if the controlled atmosphere module of the controlled atmosphere preservation device is in a shutdown state, detecting whether the controlled atmosphere preservation device is opened;

if the controlled atmosphere preservation device is opened, after the door body is closed for a first preset time, when a compressor of the refrigerator is stopped, the controlled atmosphere component of the controlled atmosphere preservation device is in a working state and works completely for one time; otherwise, after the door body is closed, the controlled atmosphere membrane assembly of the controlled atmosphere preservation device is in a working state and works completely once every second preset time, wherein the second preset time is longer than the first preset time.

2. The control method of a refrigerator according to claim 1,

the air-conditioning preservation device comprises a plurality of air-conditioning preservation devices, a plurality of storage compartments and a plurality of door bodies, each air-conditioning preservation device is arranged in one storage compartment, and each door body is configured to open or close one storage compartment; the refrigerator also comprises a gas path connecting device, the gas path connecting device is provided with a plurality of inlets and an outlet, each gas regulating membrane module is communicated with one inlet of the gas path connecting device, and the outlet of the gas path connecting device is communicated with the air suction opening; the gas path connecting device is a control valve so as to controllably conduct the pumping hole and one or more of the oxygen-enriched gas collecting cavities.

3. The control method of a refrigerator according to claim 2,

the air passage connecting device is used for disconnecting one air conditioning membrane assembly from the air extraction device so as to enable the air conditioning membrane assembly of the air conditioning preservation device to be in a stop state or in a pause working state;

and stopping working after the air-conditioning membrane assemblies of each air-conditioning preservation device work for a corresponding preset time period in an accumulated mode, so that the air-conditioning membrane assemblies of the air-conditioning preservation devices work completely once.

4. The method of controlling a refrigerator according to claim 2, further comprising:

detecting whether the refrigerator is powered on for the first time;

if the refrigerator is powered on for the first time, detecting whether a compressor of the refrigerator works, and if the compressor is in a stop state, starting the air extraction device and enabling the modified atmosphere components of the modified atmosphere preservation devices to work sequentially and completely once through the air path connecting device;

and if the refrigerator is not powered on for the first time, detecting whether the door body is opened or not.

5. The control method of a refrigerator according to claim 4,

the preset storage temperature in at least one fresh-keeping space is different from the preset storage temperature in the rest fresh-keeping spaces;

the modified atmosphere components of the plurality of modified atmosphere preservation devices sequentially and completely work once according to the sequence of the preset storage temperature in the preservation space.

6. A refrigerator comprises a refrigerator body, wherein a storage compartment and a compressor bin are arranged in the refrigerator body, and the refrigerator is characterized by further comprising an air extracting device, an air path connecting device and a plurality of air-conditioning preservation devices, wherein each air-conditioning preservation device comprises a storage container and an air-conditioning membrane assembly;

a fresh-keeping space is limited in each storage container, and a plurality of storage containers are arranged in the storage room; the preset storage temperature in at least one storage container is different from the preset storage temperature in the rest storage containers;

each gas-regulating membrane module is arranged in the corresponding storage container, the space around the gas-regulating membrane module is communicated with the corresponding fresh-keeping space, each gas-regulating membrane module is provided with at least one gas-regulating membrane and one oxygen-enriched gas collecting cavity, and the gas-regulating membrane modules are configured to enable oxygen in airflow around the gas-regulating membrane module to penetrate through the gas-regulating membrane more than nitrogen in the airflow around the gas-regulating membrane module into the oxygen-enriched gas collecting cavity, so that more oxygen in the fresh-keeping space flows out of the fresh-keeping space than nitrogen in the airflow;

the air extracting device is arranged in the compressor bin and is provided with an air extracting opening, the air path connecting device is provided with a plurality of inlets and an outlet, each oxygen-enriched gas collecting cavity is communicated with one inlet of the air path connecting device, and the outlet of the air path connecting device is communicated with the air extracting opening;

the gas circuit connecting device is arranged in the compressor bin and close to the air extracting device, or the gas circuit connecting device is integrated on the air extracting device.

7. The refrigerator according to claim 6,

the gas path connecting device is a three-way joint, or the gas path connecting device is a control valve so as to controllably communicate the pumping hole with one or more of the oxygen-enriched gas collecting cavities.

8. The refrigerator according to claim 6,

the storage compartments are at least two and comprise a first storage compartment and a second storage compartment, and the plurality of controlled atmosphere preservation devices comprise a first controlled atmosphere preservation device arranged in the first storage compartment and a second controlled atmosphere preservation device arranged in the second storage compartment;

the first storage chamber is a refrigerating chamber, and the second storage chamber is a temperature-changing chamber or a freezing chamber.

9. The refrigerator of claim 6, further comprising a plurality of moisture permeable devices,

the rear part of the upper surface of the modified atmosphere preservation device is provided with a communication port, each moisture permeable device is arranged at the communication port of one modified atmosphere preservation device, and the moisture permeable device is provided with a moisture permeable film, so that moisture in the preservation space can be unidirectionally permeated to the outer side of the preservation space through the moisture permeable film.

10. The refrigerator of claim 9, further comprising a plurality of air supply devices and a plurality of air guide devices, wherein the air supply devices are vortex fans or centrifugal fans, each air supply device is arranged in the storage compartment and above one air-conditioning and freshness-preserving device, and an air inlet of each air supply device faces to part or all of the corresponding moisture permeable film; the rear wall of the storage compartment is provided with a plurality of air supply outlets, each air guide device is arranged on the upper side of one controlled atmosphere preservation device, the rear end of each air guide device is connected with the corresponding air supply outlet, and the air guide devices are configured to supply air to at least the front part and/or the front part of the controlled atmosphere preservation device;

the lower surface of the air guide device is provided with a yielding groove extending along the front-back direction, and the air supply device is installed at the rear end of the yielding groove;

the upper limiting surface of the abdicating groove is obliquely arranged, the front end of the upper limiting surface is connected to the lower surface of the air guide device, and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface.

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