WO2022042424A1

WO2022042424A1 - Control method for refrigerator and refrigerator

Info

Publication number: WO2022042424A1
Application number: PCT/CN2021/113555
Authority: WO
Inventors: 张振兴; 程学丽; 娄喜才; 王磊
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2020-08-25
Filing date: 2021-08-19
Publication date: 2022-03-03

Abstract

A control method for a refrigerator and the refrigerator. The control method comprises: when a door body is opened, determining whether an air-conditioning membrane assembly of an air-conditioning preservation device is working; if the air-conditioning membrane assembly of the air-conditioning preservation device is in a working state, then suspend the working of the air-conditioning membrane assembly of the air-conditioning preservation device; when the door body is closed, detecting whether the air-conditioning membrane assembly of the air-conditioning preservation device is in a suspended working state; if the air-conditioning membrane assembly of the air-conditioning preservation device is in the suspended working state, then enabling the air-conditioning membrane assembly of the air-conditioning preservation device to continue working; if the air-conditioning membrane assembly of the air-conditioning preservation device is in a shutdown state, then detecting whether the air-conditioning preservation device has been opened; if the air-conditioning preservation device has been opened, then once the door body is closed for a first preset time, enabling the air-conditioning membrane assembly of the air-conditioning preservation device to be in the working state when a compressor of the refrigerator is shut down; otherwise, once the door body is closed, enabling the air-conditioning membrane assembly of the air-conditioning preservation device to be in the working state at each interval of a second preset time.

Description

Refrigerator control method and refrigerator

technical field

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

Background technique

A refrigerator is a refrigeration device that maintains a constant low temperature, and it is also a civilian product that keeps food or other items in a constant low temperature and cold state. With the improvement of people's living standards, the preservation of ingredients has reached a new height, and the preservation of food is more urgent. At present, most refrigerators on the market only have the basic functions of refrigerating and freezing food materials, and there is no detailed distinction on the preservation of food materials, and the preservation function cannot meet the needs of customers. Some refrigerators have a separate fresh-keeping compartment, but the temperature range is single, and can only store the fresh-keeping function of one type of food. I often hear some complaints from customers about the freshness of food ingredients but not meeting the requirements of customers.

SUMMARY OF THE INVENTION

The present invention aims to overcome at least one defect of the existing refrigerators for fresh-keeping, and provides a novel refrigerator, so that the refrigerator has at least two or more air-conditioned compartments, and each air-conditioned compartment has its own air-conditioned membrane unit, And each air-conditioned room has its own temperature range to meet the fresh-keeping needs of different ingredients. At the same time, the inventor proposes that a plurality of air-conditioning compartments share one air extraction device, and how to connect one air extraction device to a plurality of air-conditioning compartments needs to be solved urgently. Based on this, the present invention also provides a control method applicable to the novel refrigerator.

In one aspect, the present invention provides a control method for a refrigerator, wherein the refrigerator includes a box body, a door body, an air-conditioning fresh-keeping device and an air extraction device, and a storage compartment is provided in the box body, and the air-conditioning The fresh-keeping device is installed in the storage compartment, and a fresh-keeping space is defined in the air-conditioning fresh-keeping device, and the air-conditioning fresh-keeping device includes an air-conditioning membrane assembly communicated with the air extraction device; the door body is configured to Open and close the storage compartment; the control method of the refrigerator includes:

Detecting whether the door is open;

When the door body is opened, it is judged whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is working; if the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in the working state, the The controlled atmosphere membrane assembly suspends its operation; wherein, the oxygen in the fresh-keeping space can enter the air extraction device more through the controlled atmosphere membrane assembly than the nitrogen in the fresh-keeping space through the operation of the air extraction device, so that the The modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device is in working condition;

When the door body is closed, it is detected whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a suspended working state; if the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a suspended working state, the The modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device continues to work, so that the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device works completely once; if the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device is in a shutdown state, the State whether the modified atmosphere fresh-keeping device has been opened;

If the air-conditioning fresh-keeping device has been opened, after the door is closed for a first preset time, when the compressor of the refrigerator is stopped, the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a working state and Completely work once; otherwise, after the door body is closed, at every second preset time interval, the modified atmosphere membrane assembly of the modified atmosphere preservation device is in a working state and works completely once, and the second preset time is greater than the preset time. the first preset time.

Optionally, there are multiple air-conditioning fresh-keeping devices, multiple storage compartments, and multiple door bodies, and each of the air-conditioning fresh-keeping devices is installed in one of the storage compartments, Each of the door bodies is configured to open or close one of the storage compartments; the refrigerator further includes an air circuit connection device having a plurality of inlets and an outlet, and each of the air-conditioning membranes The components are all communicated with an inlet of the air path connection device, and the outlet of the air path connection device is communicated with the air suction port; the air path connection device is a control valve to controllably conduct the air suction port to the air outlet. one or more of the plurality of said oxygen-enriched gas collection chambers.

Optionally, one of the air-conditioning membrane assemblies is disconnected from the air extraction device through the air path connecting device, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a stopped state or in a suspended working state;

The air-conditioning membrane assembly of each of the air-conditioning fresh-keeping devices has accumulated a corresponding preset time and then stops working, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device can 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, check whether the compressor of the refrigerator is working. If the compressor is in a shutdown state, turn on the air extraction device and use the air circuit connection device to keep a plurality of the air conditioning fresh. The modified atmosphere membrane components of the device work completely once in sequence;

If the refrigerator is not powered on for the first time, it is detected whether the door is opened.

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

The air-conditioning membrane assemblies of the plurality of air-conditioning fresh-keeping devices work completely in sequence according to the order of the preset storage temperature in the fresh-keeping space.

On the other hand, the present invention also provides a refrigerator, including a box body, the box body is provided with a storage compartment and a compressor compartment, wherein, it also includes an air extraction device, an air path connection device and a plurality of modified atmosphere fresh-keeping devices device, each of the modified atmosphere preservation devices includes a storage container and a modified atmosphere membrane assembly;

Each of the storage containers defines a fresh-keeping space, and a plurality of the storage containers are arranged in the storage compartment;

Each of the modified atmosphere membrane assemblies is installed in the corresponding storage container and the surrounding space of the modified atmosphere membrane assembly is communicated with the corresponding fresh-keeping space, and each of the modified atmosphere membrane assemblies has at least one modified atmosphere membrane and one oxygen-enriched membrane The oxygen-rich gas collection cavity is configured so that the oxygen in the airflow of the space around the modified atmosphere membrane module is more permeable through the modified atmosphere membrane into the oxygen-enriched gas collection cavity than the nitrogen therein, so that the fresh-keeping space Compared with nitrogen, the oxygen in the air flows out of the fresh-keeping space more;

The air extraction device is arranged in the compressor compartment and has an air extraction port, the air path connection device has multiple inlets and an outlet, and each of the oxygen-enriched gas collection chambers is connected to the air path connection device. An inlet is communicated, and the outlet of the air path connecting device is communicated with the air suction port;

The air path connection device is disposed in the compressor compartment and adjacent to the air extraction device, or the air path connection device is integrated on the air extraction device.

Optionally, the air path connecting device is arranged on the top wall of the compressor compartment and is above the air extraction device.

Optionally, the air extraction device includes an installation box and a vacuum pump arranged in the installation box, and the air path connecting device is arranged on the inner surface of the side wall or the outer surface of the side wall of the installation box.

Optionally, the refrigerator further includes a plurality of air guide devices,

The rear wall of the storage compartment is provided with a plurality of air supply ports, each of the air guide devices is arranged on the upper side of one of the air-conditioning fresh-keeping devices, and the rear end of the air guide device is connected to the air supply device. A tuyere, wherein the air guide device is configured to supply air at least to the front and/or front of the air-conditioning fresh-keeping device.

Optionally, the preset storage temperature in at least one of the storage containers is different from the preset storage temperature in the other storage containers.

Optionally, the air path connection device is a three-way joint, or the air path connection device is a control valve to controllably conduct the air suction port and one of the multiple oxygen-enriched gas collection chambers. or more.

Optionally, there are at least two storage compartments, including a first storage compartment and a second storage compartment, and the plurality of air-conditioned fresh-keeping devices include a first storage compartment disposed in the first storage compartment. An air-conditioning fresh-keeping device and a second air-conditioning fresh-keeping device arranged in the second storage compartment.

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

Optionally, the refrigerator further includes a plurality of moisture permeable devices, a communication port is provided at the rear of the upper surface of the air-conditioned fresh-keeping device, and each of the moisture-permeable devices is installed in a communication port of the air-conditioned fresh-keeping device. The moisture-permeable device has a moisture-permeable membrane, so that the moisture in the fresh-keeping space can permeate to the outside of the fresh-keeping space in one direction through the moisture-permeable membrane.

Optionally, the refrigerator further includes a plurality of air supply devices, the air supply devices are vortex fans or centrifugal fans, and each of the air supply devices is arranged in the storage compartment and is located in one of the modified atmosphere fresh-keeping devices. Above the device, the air inlet of the air supply device faces the corresponding part or all of the area of the moisture permeable membrane;

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

The upper limiting surface of the escaping groove is arranged obliquely, 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 of the present invention, because there are at least two or more air-conditioning fresh-keeping devices, that is, there are at least two or more air-conditioning compartments, each air-conditioning compartment has its own air-conditioning membrane assembly, and each air-conditioning compartment has its own air-conditioning membrane assembly. An air-conditioned room has its own temperature range to meet the freshness requirements of different ingredients.

Further, at least two or more air-conditioning fresh-keeping devices share a set of air extraction devices, so as to meet the fresh-keeping requirements and at the same time reduce the product cost to a minimum. The pneumatic connection device such as a three-way joint or a controllable three-way valve is used to connect the gas circuit, and the structure is simple and convenient for production and operation. The special installation position of the air connection device can make the refrigerator compact in structure and reasonable in layout, that is to say, it can be flexibly arranged according to the actual situation of the refrigerator, the internal space of the refrigerator can be reasonably used, and the volume ratio of the refrigerator can be improved as much as possible. , and at the same time realize the optimal layout position, and the product cost is more economical.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic front view of a refrigerator according to an embodiment of the present invention;

2 is a schematic side view of a refrigerator according to an embodiment of the present invention;

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

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

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

6 is a schematic structural diagram of an air-conditioning fresh-keeping device in a refrigerator according to an embodiment of the present invention;

Fig. 7 is a schematic cross-sectional view of the modified atmosphere fresh-keeping device shown in Fig. 6;

Fig. 8 is a schematic exploded view of the modified atmosphere fresh-keeping device shown in Fig. 6;

Fig. 9 is a schematic sealing principle diagram of the modified atmosphere fresh-keeping device shown in Fig. 6;

Fig. 10 is a schematic partial structural view of the air extraction device in the refrigerator shown in Fig. 1;

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

detailed description

FIG. 1 is a schematic front view of a refrigerator according to an embodiment of the present invention. As shown in FIG. 1 and with reference to FIGS. 2 to 5 , an embodiment of the present invention provides a refrigerator. The refrigerator includes a box body 20 , a plurality of air-conditioning fresh-keeping devices 30 and a refrigeration system.

A storage compartment is arranged in the box body 20, and a door is arranged at the opening of the storage compartment to open and close the storage compartment. For example, a refrigerator compartment 21 , a freezer compartment 22 and a temperature-changing compartment 23 are provided in the box 20 . The storage temperature of the refrigerating compartment 21 is generally between 2°C and 10°C, preferably between 3°C and 8°C. The temperature within the freezer compartment 22 typically ranges from -14°C to -22°C. The temperature changing compartment 23 can be adjusted according to requirements to store suitable food. Optionally, the temperature changing range of the changing temperature compartment 23 is -24°C to 10°C. Preferably, the temperature change range of the variable temperature compartment 23 is -8°C to 0°C. The refrigeration system is configured to provide cooling capacity to the storage compartment, and may consist of a compressor, a condenser, a throttling device, an evaporator, and the like.

As shown in FIG. 1 , each modified atmosphere fresh-keeping device 30 may include a storage container and a modified atmosphere membrane assembly 42 . A fresh-keeping space is defined in each storage container. A plurality of storage containers are arranged in the storage compartment, and the preset storage temperature in at least one storage container is different from the preset storage temperature in the other storage containers. For example, there are multiple storage compartments, and the multiple air-conditioned fresh-keeping devices 30 are respectively disposed in the multiple storage compartments, and the preset temperature in each storage compartment may be different, so that the preset storage compartments in the air-conditioned fresh-keeping device 30 are preset. material temperature is different. For another example, there are at least two storage compartments, including a first storage compartment and a second storage compartment, and a plurality of air-conditioning fresh-keeping 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 another example, a plurality of storage containers may be arranged in one storage compartment, but the preset storage temperatures in the plurality of storage containers are different.

Each modified atmosphere membrane assembly 42 is installed in a corresponding storage container, and the surrounding space of the modified atmosphere membrane assembly 42 is communicated with the corresponding fresh-keeping space. Each modified atmosphere membrane assembly 42 has at least one modified atmosphere membrane and an oxygen-rich gas collection cavity, and It is configured so that the oxygen in the air flow in the space around the modified atmosphere membrane assembly 42 is more permeable through the modified atmosphere membrane and enters the oxygen-enriched gas collection chamber relative to the nitrogen therein, so that the oxygen in the fresh-keeping space flows out of the fresh-keeping space more than the nitrogen. .

In the embodiment of the present invention, because there are at least two or more air-conditioning fresh-keeping devices 30, that is, there are at least two or more air-conditioning compartments, each air-conditioning compartment has its own air-conditioning membrane assembly 42, and each air-conditioning compartment has its own air-conditioning membrane assembly 42. An air-conditioned room has its own temperature range to meet the freshness requirements of different ingredients.

Preferably, in this embodiment, the refrigerator further includes an air extraction device 70 and an air circuit connection device 80. The air extraction device 70 has an air extraction port, and each oxygen-enriched gas collection chamber is connected to the air extraction device through the outlet pipeline 34 and the air circuit connection device 80. Air connection. Specifically, the gas path connecting device 80 has a plurality of inlets and one outlet, and each oxygen-enriched gas collection chamber is communicated with one inlet of the gas path connecting device 80 . The outlet of the air path connecting device 80 is communicated with the air suction port through the pipeline 81 . Further optionally, the gas path connecting device 80 is a three-way joint, that is, the air suction port communicates with a plurality of oxygen-enriched gas collection chambers through the three-way joint. Further preferably, the gas path connecting device 80 is a control valve, that is, the air suction port is controlledly communicated with a plurality of oxygen-enriched gas collection chambers through the control valve. At least two or more air-conditioning fresh-keeping devices 30 share a set of air extraction device 70, which can meet the fresh-keeping requirements and at the same time minimize product cost. The three-way joint or the controllable three-way valve is used to connect the gas circuit, and the structure is simple, which is convenient for production and operation.

Further, a compressor compartment for placing the compressor is also arranged inside the box, and the air extraction device 70 is arranged in the compressor compartment. The air path connecting device 80 can be installed in the storage room behind a modified atmosphere fresh-keeping device, in the thermal insulation layer of the box, or in the compressor compartment provided in the box. The special installation position of the air path connecting device 80 can make the refrigerator compact in structure and reasonable in layout. That is to say, in this way, a flexible arrangement can be made according to the actual situation of the refrigerator, the internal space of the refrigerator can be reasonably utilized, the volume ratio of the refrigerator can be improved as much as possible, and at the same time, the optimal arrangement position can be realized, and the product cost is more economical. Preferably, as shown in FIG. 4 , the air circuit connection device 80 can be installed in the compressor compartment and adjacent to the air extraction device 70 . More preferably, as shown in FIG. 5 , the air circuit connection device 80 is integrated in the air extraction device 70 . on the gas device 70.

When the air extraction device 70 located in the compressor compartment is working, when using the tee joint for air extraction control, the air control membrane module 42 in the refrigerating compartment and the air conditioning membrane module 42 in the low temperature compartment are simultaneously pumped. air, and the working time is determined according to the air-conditioning membrane assembly 42 in the refrigerating room and the low-temperature air-conditioning membrane assembly 42 which require a longer air extraction time to ensure the air extraction quality and meet the fresh-keeping requirements. When the control valve is used for air extraction control, the air-conditioning membrane assembly 42 in the refrigerating compartment and the air-conditioning membrane assembly 42 in the low-temperature compartment are simultaneously evacuated, and the working time depends on the air-conditioning membrane assembly 42 in the refrigerating room and the low-temperature compartment. The required air extraction time in the modified atmosphere membrane assembly 42 is controlled by the control valve, so as to ensure the air extraction quality and meet the fresh-keeping requirements. The temperature set in each fresh-keeping compartment is different. For example, the temperature in the refrigerating compartment 21 is set to 5-8°C, which is beneficial to the fresh-keeping needs of fruits and vegetables; 3 ℃, which is conducive to the preservation of meat, seafood and other ingredients.

In some embodiments of the present invention, the plurality of air-conditioned fresh-keeping devices 30 include a first air-conditioned fresh-keeping device 31 disposed in the first storage compartment and a second air-conditioned fresh-keeping device 32 disposed in the second storage compartment . The first storage compartment is located above the second storage compartment, and the first air-conditioned fresh-keeping device 31 is located above the second air-conditioned fresh-keeping device 32 .

In some embodiments of the present invention, the refrigerator may further include a plurality of moisture permeable devices 41 and a plurality of air supply devices. The air-conditioning fresh-keeping device 30 defines a fresh-keeping space, and a communication port is provided at the rear of the upper surface of the air-conditioning fresh-keeping device 30 . The moisture-permeable device 41 can be installed in the communication port, and the moisture-permeable device 41 has a moisture-permeable film, so that the moisture can flow in one 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 can pass through the permeable membrane. The wet film flows out of the fresh-keeping space. That is to say, the moisture-permeable membrane allows the moisture in the fresh-keeping space to permeate unidirectionally to the outside of the fresh-keeping space through the moisture-permeable membrane, so that the fresh-keeping space has the required humidity.

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 above a corresponding air-conditioning fresh-keeping device 30, and the air inlet of the vortex fan 50 or the centrifugal fan faces the part of the corresponding moisture-permeable film or all areas. When the air supply device is turned on, the air flow outside the air conditioning fresh-keeping device 30 can be accelerated, especially the air flow outside the moisture permeable device 41, the air circulation near the moisture permeable device 41 can be accelerated, the humidity value outside the air-conditioned fresh-keeping device 30 can be reduced, and the air permeability can be prevented. The reduced efficiency or complete failure of the wet film prevents the water vapor in the fresh-keeping space from being discharged, improves the efficiency of moisture permeability, and thus prevents frosting, with a high degree of intelligence and intelligence. Because there is a moisture permeable device and a vortex fan or centrifugal fan, the air inlet of the vortex fan or centrifugal fan can face the moisture permeable film, which can speed up the air flow outside the air conditioning fresh-keeping device and reduce the humidity value outside the air conditioning fresh-keeping device, especially the moisture permeable film. The humidity value on the outside forms a large humidity difference, preventing the efficiency of the moisture-permeable film from being reduced or completely ineffective, so that the moisture inside the fresh-keeping space cannot be discharged, improving the moisture-permeability efficiency, and then reducing the moisture generated by the ingredients to form condensation or frost. At the same time, the indoor cooling capacity of the storage room can be evenly distributed as soon as possible, and the degree of intelligence and intelligence is high.

In some embodiments of the present invention, as shown in FIG. 6 , FIG. 7 and FIG. 8 , the refrigerator further includes a plurality of air guide devices 60 . The rear wall of each storage compartment may be provided with an air supply port 24, and the lower portion of the rear wall of the storage compartment may be provided with an air return port 25 for circulation of cooling air in the storage compartment. The air return port 25 is located below the air supply port 24 . The air guide device 60 is arranged on the upper side of the air-conditioning fresh-keeping device 30 , the rear end of the air-guiding device 60 is connected to the air supply port 24 , and the air guide device 60 is configured to supply air at least to the front and/or front of the air-conditioning fresh-keeping device 30 . The air guide device 60 guides the airflow to the front, which can prevent the cold air from blowing directly to the rear wall of the air-conditioning fresh-keeping device 30, and prevent the local temperature of the rear wall from being too low to form frost on the inner wall, which affects the user experience, that is, it can ensure that the air supply will not be Blowing straight on the back wall of the drawer causes frost. Further, the air guiding device 60 is arranged at intervals from the upper surface of the air-conditioning fresh-keeping device 30 so as to facilitate airflow around the air-conditioning fresh-keeping device 30 in the storage room.

In some embodiments of the present invention, the modified atmosphere membrane assembly 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 an escape groove 61 extending in the front-rear direction, and the vortex fan 50 or the centrifugal fan is installed at the rear end of the escape groove 61 . The structure is compact and the volume is small, and it is also convenient to blow out the air flow of the air supply device. The air outlet of the vortex fan 50 or the centrifugal fan may face forward. Further, the upper limiting surface of the letting groove 61 is inclined, the front end of the upper limiting surface is connected to the lower surface of the air guide 60 , and the rear end of the upper limiting surface is higher than the front end of the upper limiting surface. The air guiding device 60 is provided with an air guiding air duct communicating with the air supply port 24 , and the lower surface of the air guiding device 60 is provided with a plurality of outlets, and/or the front surface of the air guiding device 60 is provided with a plurality of outlets. For example, the air guide device 60 has a bottom plate defining an air guide channel and a front grille, and the front grille is provided at the front end of the bottom plate. The bottom plate is provided with a recess groove 61, and an outlet is provided. The front grille is arranged vertically, and the grille hole is the outlet. The special arrangement of flow fans or centrifugal fans and recesses can make the storage compartment compact, reasonable in layout, convenient for airflow and low noise, giving people a comfortable feeling.

In some embodiments of the present invention, the storage container of the modified atmosphere fresh-keeping device 30 includes a drawer 31 and an upper cover 32, the drawer 31 can be slidably installed in the storage compartment through the slide rail assembly 39, and the upper cover 32 is used for sealing The upper opening of the drawer 31 . For the convenience of taking out objects and closing the drawer 31, the modified atmosphere fresh-keeping device 30 further includes a lifting device. The upper cover 32 is arranged on the upper side of the drawer 31 to be movable up and down, and the drawer 31 is configured to be driven upward by the lifting device when moving backwards. The cover 32 is lowered to close the drawer 31 . The moisture permeable device 41 and the modified atmosphere membrane assembly 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 humidity in the fresh-keeping space and/or humidity outside the fresh-keeping space and in the storage compartment. The eddy current fan 50 or the centrifugal fan is configured to be activated according to the humidity value detected by the humidity detection device. For example, the humidity detection device includes a first humidity detection device and a second humidity detection device. The first humidity detection device is arranged in the fresh-keeping space, and detects the humidity in the fresh-keeping space to obtain a first humidity value. The second humidity detection device is arranged outside the fresh-keeping space and inside the storage compartment, and detects the humidity outside the fresh-keeping space and inside the storage compartment to obtain a second humidity value. The vortex fan 50 or centrifugal fan may be configured to be turned on when the difference between the first humidity value and the second humidity value is less than or equal to the first preset value, until the difference between the first humidity value and the second humidity value It is turned off when it is less than the second preset value. The second preset value is smaller than the first preset value.

In specific use, it is determined whether the difference between the first humidity value and the second humidity value is greater than the first preset value. If not, turn on the eddy current fan 50 or the centrifugal fan, if so, do not turn on the eddy current fan 50 or the centrifugal fan. Further, continue to determine whether the difference between the first humidity value and the second humidity value is less than a second preset value, and the second preset value is less than the first preset value. If so, turn off the vortex fan 50 or the centrifugal fan. Otherwise, continue to keep the vortex fan 50 or the centrifugal fan running. The turning on of the vortex fan 50 or the centrifugal fan is controlled according to the difference between the first humidity value and the second humidity value. When the moisture permeable device 41 performs the one-way infiltration of moisture, the humidity in the fresh-keeping space gradually decreases, and the external humidity gradually decreases. When the value increases, the difference between the two becomes smaller and smaller until it is less than or equal to the first preset value, and the vortex fan 50 or the centrifugal fan is turned on to improve the moisture permeability efficiency. Further, the humidity in the fresh-keeping space gradually decreases again, and the external humidity first decreases under the action of the eddy current fan 50 or the centrifugal fan, and then remains unchanged on the basis of reduction, and the decrease or increase rate decreases, finally making the difference between the inside and outside of the fresh-keeping space. The value is getting smaller and smaller, when the difference between the humidity in the fresh-keeping space and the humidity outside is small, it can be considered that the humidity in the fresh-keeping space becomes lower and meets the requirements, and the difference between the inside and outside is not enough to make the moisture permeable device 41 When working, the vortex fan 50 or the centrifugal fan stops to save energy.

It should be noted that, for some reason, for example, when the humidity in the storage room suddenly increases, the vortex fan 50 or the centrifugal fan may be turned off at this time. If the difference between the first humidity value and the second humidity value is judged, When the value is smaller than the first preset value, or even smaller than the second preset value, the eddy current fan 50 or the centrifugal fan must be turned on first. After the eddy current fan 50 or the centrifugal fan is turned on, the external humidity value of the fresh-keeping space is significantly reduced, ensuring that the moisture permeable device 41 moisture permeability. Optionally, in order to further improve the control accuracy and prevent misoperation caused by the situation that the humidity inside and outside the fresh-keeping space is relatively high, when judging whether the difference between the first humidity value and the second humidity value is less than the second preset value , and also determine whether the first humidity value is greater than the preset humidity value; when the difference between the first humidity value and the second humidity value is less than the second preset value, and the first humidity value is less than or equal to the preset humidity value , turn off the vortex fan 50 or the centrifugal fan.

In some embodiments of the present invention, the storage container of the modified atmosphere fresh-keeping device 30 further includes a cylinder 38 with a forward opening, the drawer 31 is installed in the cylinder 38 movably forward and backward, and the cylinder 38 is installed in the storage room indoor. The upper wall of the cylindrical body 38 has the bottom plate and the front grille of the air guide device 60, that is, the bottom plate and the front grille can be integrally formed and used as the upper wall of the cylindrical body. Further, the box body 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 above-mentioned storage compartment, and the upper outer cover plate 35 is covered on the cylinder body 38 The upper side, the left and right sides, and the rear side of the cylinder 38 and the upper wall of the cylinder body 38 define the air guide air channel of the air guide device 60 . It can also be said that the air guide device 60 includes the upper outer cover plate 35 and the upper wall of the cylindrical body 38 . The lower outer cover 36 is provided on the lower side, left and right sides and the rest of the rear side of the cylindrical body 38 .

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

The lifting bracket 71 is installed on the cylinder body 38, the connecting frame 72 is installed on the lifting bracket 71 so as to be movable up and down, the upper cover 32 is installed on the connecting frame 72, the spring 73 is used to urge the connecting frame 72 to move upward, and the roller 74 extends along the axis of the left and right direction. It is rotatably mounted on the lower end of the connecting frame 72 . The pressing table 75 is disposed on the side wall of the drawer, and is used to gradually move the roller 74 downward along the inclined side of the pressing table 75 during the inward movement of the drawer 31 , and drive the upper cover 32 to move downward for sealing. After the drawer 31 is fully pushed into the cylinder 38, the roller 74 is on the lower side of the lower horizontal surface of the pressing table 75, so that the upper cover 32 is kept in a state of closing the drawer 31, or the upper cover 32 is kept in a state of closing the cylinder 38 state, and then keep the drawer 31 closed.

In some embodiments of the present invention, as shown in FIG. 10 , the refrigerator further includes an exhaust pipe 93 , the air extraction device 70 further includes a pump head 91 with a pump outlet and a motor, and the motor includes a motor housing 92 . The exhaust pipe 93 is wound around the motor casing 92 , and the inlet of the exhaust pipe 93 communicates with the pump outlet on the pump head 91 . Specifically, the inlet of the exhaust pipe 93 communicates with the pump outlet through a flexible pipe 94 . The flexible tube 94 may be a plastic tube. Specifically, the air extraction device 70 is a vacuum pump. The heat of the vacuum pump is concentrated in the motor part, that is, the key part of cooling. The pump outlet of the vacuum pump is connected to the exhaust pipe 93 with a plastic pipe, and the cold air passes through the exhaust pipe 93 through temperature conduction to realize the motor The temperature is reduced, and the high-speed air is forced to convect through the exhaust pipe 93 to reduce the temperature of the motor, and to achieve noise reduction by extending the total length of the exhaust.

Further, the refrigerator also includes a bimetal heat conduction device 95, the motor housing 92 and the pump head 91 are thermally connected with the bimetal heat conduction device 95, and the bimetal heat conduction device 95 is configured to transfer the heat generated by the motor to the pump head 91, And the heat transfer is cut off after the temperature of the pump head 91 reaches the preset temperature. By setting the bimetal heat conducting device 95, when the temperature of the pump head 91 is low, the pump head 91 is connected to the motor casing 92, and the high temperature is used to heat the pump head 91 to prevent the pump head 91 from frosting and freezing; when the temperature of the pump head 91 is high, the heat transfer Disconnect to prevent the high temperature on the motor from continuously heating the pump head 91. After the temperature is lowered, the bimetal heat conducting device 95 is reset to perform heat transfer. Using the bimetal heat conducting device 95 has the advantages of simple structure, low cost and long service life. Further, the temperature of the motor casing 92 is directly used, and the structure of the motor and the air extraction device 70 is not changed, and the practicability is strong and the cost is low. In some embodiments of the present invention, the exhaust pipe 93 is made of a heat-conducting material, and the bimetal heat-conducting device 95 is thermally connected to the motor casing 92 through the exhaust pipe 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 are connected to both ends of the winding pipe section, and the winding pipe section is wound around the motor casing 92 . The bimetal heat conducting device 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 sheet 96 , and the metal sheet 96 is thermally connected to the bimetal heat conducting device 95 . The heat transfer through the exhaust pipe 93 will not cause the pump head 91 to heat up too fast or too high, causing the temperature of the pump head 91 to change frequently, causing the bimetal heat conduction device 95 to operate frequently, and affecting the life and performance of the pump head 91 .

By setting the temperature-controlled heat conduction device, when the temperature of the pump head is low, the high temperature generated by the motor is used to heat the pump head to prevent the pump head from frosting and freezing; when the temperature of the pump head is high, the heat transfer is disconnected, preventing the high temperature on the motor from continuously adding heat to the pump head. temperature. It can reduce or prevent frost and icing at the pump head, ensure the performance of the vacuum pump, and prolong the reliability of the vacuum pump. The pump outlet is connected to the exhaust pipe, the cold air is passed through the exhaust pipe to reduce the temperature of the motor through temperature conduction, the high-speed air is forced to convect through the exhaust pipe to reduce the temperature of the motor, and the total length of the exhaust is extended to achieve noise reduction. It can prevent the high temperature of the motor from affecting the service life of the air extraction device, and can also reduce the noise generated by the air extraction device and improve the user experience. The temperature-controlled heat-conducting device can also prevent the pump head from being heated continuously and affect the heat dissipation effect of the motor.

The present invention also provides a method for controlling a refrigerator. FIG. 11 is a schematic flowchart of a method for controlling a refrigerator according to an embodiment of the present invention. As shown in FIG. 11 , a method for controlling a refrigerator includes:

S101: Detect whether the door is open. When the door body is opened, go to S102: determine whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 is working; The adjustment film assembly is suspended. Wherein, the oxygen in the fresh-keeping space can enter the air-extracting device 70 more through the modified atmosphere membrane assembly than the nitrogen in the fresh-keeping space through the operation of the air-extracting device 70, so that the modified-atmosphere membrane assembly of the air-conditioning fresh-keeping device 30 is in a working state.

When the door is closed, go to S104: check whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 is in a suspended working state; if the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 is in a suspended working state, go to S105: make the air-conditioning The modified atmosphere membrane assembly of the fresh-keeping device 30 continues to work, so that the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device works completely once; if the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device 30 is in a shutdown state, enter S106: Detect the modified atmosphere fresh-keeping device 30 Whether it has been opened;

If the air-conditioning fresh-keeping device 30 has been opened, then enter S107: after the door body is closed for the first preset time, when the compressor of the refrigerator is stopped, the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 is in the working state and works completely once ; otherwise, go to S108 : after the door body is closed, at every second preset time interval, make the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 in a working state and work completely once. The second preset time is greater than the first preset time. The storage of the cooling capacity in the air-conditioning fresh-keeping device 30 is convenient, the food preservation effect is good, and the energy efficiency of the refrigerator is high. The first preset time may be 25min to 35min, such as 28min, 30min, 32min, and the like. The second preset time may be 4h to 5h, eg, 4.5h.

In some embodiments of the present invention, when there are multiple air-conditioned fresh-keeping devices 30, multiple storage compartments, and multiple door bodies, each air-conditioned fresh-keeping device 30 is installed in one storage compartment, and each When the door body is configured to open or close one storage compartment, the plurality of air-conditioned fresh-keeping devices 30 can be controlled in a unified manner. Optionally, each air-conditioning fresh-keeping device 30 can also be individually controlled, and then one air-conditioning membrane assembly is disconnected from the air extraction device 70 through the air path connecting device 80, so that the air-conditioning membrane of the air-conditioning fresh-keeping device 30 is disconnected. The component is in a stopped state or in a suspended working state. That is to say, when the modified atmosphere membrane assembly is not working, the air extraction device 70 can be in a working state. The air-conditioning membrane assembly of each air-conditioning fresh-keeping device 30 stops working after accumulatively working for a corresponding preset time period, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 works completely once.

In some embodiments of the present invention, the control method for the refrigerator further includes: S201: Detect whether the refrigerator is powered on for the first time. If the refrigerator is powered on for the first time, go to S202 : check whether the compressor of the refrigerator is working, if the compressor is in a shutdown state, turn on the air extraction device 70 and connect the air-conditioning membrane assemblies of the plurality of air-conditioning fresh-keeping devices 30 through the air circuit connection device 80 Completely work once in turn; if the refrigerator is not powered on for the first time, check whether the door is open. Further, the preset storage temperature in at least one fresh-keeping space is different from the preset storage temperature in the remaining fresh-keeping spaces. The air-conditioning membrane assemblies of the plurality of air-conditioning fresh-keeping devices 30 work completely in sequence according to the order of the preset storage temperature in the fresh-keeping space. For example, a plurality of air-conditioning fresh-keeping devices include the first air-conditioning fresh-keeping device 31 and the second air-conditioning fresh-keeping device 32, then the air extraction device is turned on and the air-conditioning membrane assembly 70 of the plurality of air-conditioning fresh-keeping devices 30 is connected through the air path connecting device 80. The sequential operations include S203 : firstly enabling the modified atmosphere membrane assembly of the first modified atmosphere fresh-keeping device 31 to operate for a corresponding preset time period, and S204 : then enabling the modified atmosphere membrane assembly of the second modified atmosphere fresh-keeping device 32 to operate for a corresponding preset time period. The control method of the refrigerator allows the perfect combination of cooling capacity and atmosphere to maximize freshness.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A control method of a refrigerator, the refrigerator comprises a box body, a door body, a modified atmosphere preservation device and an air extraction device, the box body is provided with a storage compartment, and the modified atmosphere preservation device is installed in the storage compartment indoors, and a fresh-keeping space is defined in the air-conditioning fresh-keeping device, the air-conditioning fresh-keeping device includes an air-conditioning membrane assembly communicated with the air extraction device; the door body is configured to open and close the storage compartment ; The control method of the refrigerator includes:

Detecting whether the door is open;

When the door body is opened, it is judged whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is working; if the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in the working state, the The controlled atmosphere membrane assembly suspends its operation; wherein, the oxygen in the fresh-keeping space can enter the air extraction device more through the controlled atmosphere membrane assembly than the nitrogen in the fresh-keeping space through the operation of the air extraction device, so that the The modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device is in working condition;

When the door body is closed, it is detected whether the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a suspended working state; if the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a suspended working state, the The modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device continues to work, so that the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device works completely once; if the modified atmosphere membrane assembly of the modified atmosphere fresh-keeping device is in a shutdown state, the State whether the modified atmosphere fresh-keeping device has been opened;

If the air-conditioning fresh-keeping device has been opened, after the door is closed for a first preset time, when the compressor of the refrigerator is stopped, the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a working state and Completely work once; otherwise, after the door body is closed, at every second preset time interval, the modified atmosphere membrane assembly of the modified atmosphere preservation device is in a working state and works completely once, and the second preset time is greater than the preset time. the first preset time.
The control method of the refrigerator according to claim 1, wherein,

There are multiple air-conditioning fresh-keeping devices, multiple storage compartments, and multiple door bodies, each of the air-conditioning fresh-keeping devices is installed in one of the storage compartments, and each of the The door body is configured to open or close one of the storage compartments; the refrigerator further includes an air path connection device, the air path connection device has a plurality of inlets and an outlet, and each of the modified atmosphere membrane assemblies is connected to the An inlet of the air path connecting device is communicated, and the outlet of the air path connecting device is communicated with the gas suction port; the gas path connecting device is a control valve to controllably conduct the gas suction port with a plurality of oxygen-rich gas ports. one or more of the body collection lumens.
The control method of the refrigerator according to claim 2, wherein,

Disconnecting one of the air-conditioning membrane assemblies from the air extraction device through the air path connecting device, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device is in a stopped state or in a suspended working state;

The air-conditioning membrane assembly of each of the air-conditioning fresh-keeping devices has accumulated a corresponding preset time and then stops working, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device can work completely once.
The control method of 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, check whether the compressor of the refrigerator is working. If the compressor is in a shutdown state, turn on the air extraction device and use the air circuit connection device to keep a plurality of the air conditioning fresh. The modified atmosphere membrane components of the device work completely once in sequence;

If the refrigerator is not powered on for the first time, it is detected whether the door is open.
The control method of the refrigerator according to claim 4, wherein,

The preset storage temperature in at least one of the fresh-keeping spaces is different from the preset storage temperature in the remaining fresh-keeping spaces;

The air-conditioning membrane assemblies of the plurality of air-conditioning fresh-keeping devices work completely in sequence according to the order of the preset storage temperature in the fresh-keeping space.
A refrigerator includes a box body, a storage compartment and a compressor compartment are arranged in the box body, and also includes an air extraction device, an air path connection device and a plurality of air-conditioning fresh-keeping devices, each of the air-conditioning fresh-keeping devices includes Storage container and modified atmosphere membrane assembly;

Each of the storage containers defines a fresh-keeping space, and a plurality of the storage containers are arranged in the storage compartment;

Each of the modified atmosphere membrane assemblies is installed in the corresponding storage container and the surrounding space of the modified atmosphere membrane assembly is communicated with the corresponding fresh-keeping space, and each of the modified atmosphere membrane assemblies has at least one modified atmosphere membrane and one oxygen-rich membrane The oxygen-rich gas collection cavity is configured so that the oxygen in the airflow of the space around the modified atmosphere membrane module is more permeable through the modified atmosphere membrane into the oxygen-enriched gas collection cavity than the nitrogen therein, so that the fresh-keeping space Compared with nitrogen, the oxygen in the air flows out of the fresh-keeping space more;

The air extraction device is arranged in the compressor compartment and has an air extraction port, the air path connection device has multiple inlets and an outlet, and each of the oxygen-enriched gas collection chambers is connected to the air path connection device. An inlet is communicated, and the outlet of the air path connecting device is communicated with the air suction port;

The air path connection device is disposed in the compressor compartment and adjacent to the air extraction device, or the air path connection device is integrated on the air extraction device.
The refrigerator according to claim 6, wherein,

The air path connecting device is arranged on the top wall of the compressor compartment and is above the air extraction device.
The refrigerator according to claim 6, wherein,

The air extraction device includes an installation box and a vacuum pump arranged in the installation box, and the air path connecting device is arranged on the inner surface of the side wall or the outer surface of the side wall of the installation box.
The refrigerator according to claim 6, further comprising a plurality of air guide devices,

The rear wall of the storage compartment is provided with a plurality of air supply ports, each of the air guide devices is arranged on the upper side of one of the air-conditioning fresh-keeping devices, and the rear end of the air guide device is connected to the air supply device. A tuyere, wherein the air guide device is configured to supply air at least to the front and/or the front of the air-conditioning fresh-keeping device.
The refrigerator according to claim 6, wherein the preset storage temperature in at least one of the storage containers is different from the preset storage temperature in the remaining storage containers.
The refrigerator according to claim 6, wherein,

The gas path connecting device is a three-way joint, or, the gas path connecting device is a control valve to controllably conduct the air suction port and one or more of the multiple oxygen-enriched gas collection chambers.
The refrigerator according to claim 6, wherein,

There are at least two storage compartments, including a first storage compartment and a second storage compartment, and the plurality of air-conditioning fresh-keeping devices include a first air-conditioning fresh-keeping device disposed in the first storage compartment and a second air-conditioning fresh-keeping device arranged in the second storage compartment.
The refrigerator according to claim 12, wherein,

The first storage compartment is a refrigerating compartment, and the second storage compartment is a variable temperature compartment or a freezing compartment.
The refrigerator according to claim 9, further comprising a plurality of moisture permeable devices,

The rear part of the upper surface of the air-conditioning fresh-keeping device is provided with a communication port, each of the moisture-permeable devices is installed at a communication port of the air-conditioning fresh-keeping device, and the moisture-permeable device has a moisture-permeable film to The moisture in the fresh-keeping space is unidirectionally permeated to the outside of the fresh-keeping space through the moisture-permeable membrane.
The refrigerator according to claim 14, further comprising a plurality of air supply devices, the air supply devices are vortex fans or centrifugal fans, each of the air supply devices is arranged in the storage compartment and is located in one of the air supply devices. Above the fresh-keeping device, the air inlet of the air supply device faces part or all of the corresponding moisture-permeable membrane;

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

The upper limiting surface of the escaping groove is arranged obliquely, 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.