CN114165978B

CN114165978B - Control method of refrigerator

Info

Publication number: CN114165978B
Application number: CN202010954507.6A
Authority: CN
Inventors: 刘畅; 刘桂信; 崔增燕; 吴光瑞; 陈建龙
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2023-05-16
Anticipated expiration: 2040-09-11
Also published as: CN114165978A

Abstract

The invention provides a control method of a refrigerator. Comprising the following steps: judging whether the two fresh-keeping spaces need to be subjected to gas adjustment or not; when one fresh-keeping space needs to be subjected to gas regulation, the flow path control device is controlled to enable the gas regulating membrane component corresponding to the fresh-keeping space to be communicated with the two gas exhaust devices, so that oxygen in the fresh-keeping space enters the two gas exhaust devices more than nitrogen in the fresh-keeping space through the gas regulating membrane component; when the two fresh-keeping spaces are all required to be subjected to gas regulation, the flow path control device is controlled to enable the two air-regulating membrane assemblies to be respectively communicated with the two air exhaust devices, so that oxygen in each fresh-keeping space passes through the corresponding air exhaust devices relative to nitrogen in the fresh-keeping space and more enters the corresponding air exhaust devices through the corresponding air-regulating membrane assemblies. The two air extraction devices are utilized for oxygen extraction, so that the oxygen extraction speed can be remarkably improved, the oxygen reduction rate is improved to the maximum extent, and the intelligent degree is high.

Description

Control method of refrigerator

Technical Field

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

Background

Refrigerators are a kind of refrigerating apparatus that maintains a constant low temperature, and also a kind of civil products that maintain foods or other objects in a constant low temperature cold state. Along with the improvement of the living standard of people, the fresh-keeping of food materials is improved to a new height, and the fresh-keeping of food is more urgent. Most of refrigerators in the current market only have basic food material refrigerating and freezing storage functions, the food material preservation is not distinguished in detail, and the preservation function cannot meet the demands of customers. Some refrigerators have an independent fresh-keeping compartment, but have a single temperature range, and can only keep fresh of one type of food. Some complaints are often heard that customers' demand for fresh food products is not met.

Disclosure of Invention

The invention aims to overcome at least one defect of fresh-keeping of the existing refrigerator, and provides a novel refrigerator, so that the refrigerator is provided with two air-conditioning compartments, each air-conditioning compartment is provided with a respective air-conditioning membrane unit, and each air-conditioning compartment is provided with a temperature value range, so that the fresh-keeping requirements of different food materials are met. However, the inventor finds that after the low-temperature MSA and MSA functions are carried at the same time, two pumps pump oxygen to one oxygen control interval at the same time, the actual efficiency is limited by the controlled oxygen membrane, the total oxygen reduction rate is low, and meanwhile, the two oxygen control intervals pump oxygen, and the oxygen concentration is uneven due to different volumes of the oxygen control intervals. Based on the above, the invention also provides a control method applicable to the novel refrigerator, and the control method of the refrigerator can be applicable to other refrigerators.

The invention provides a control method of a refrigerator, wherein the refrigerator comprises a box body, a door body, two air-conditioning fresh-keeping devices, a flow path control device and two air exhaust devices, wherein the two air-conditioning fresh-keeping devices are arranged in the box body, a fresh-keeping space is limited in each air-conditioning fresh-keeping device, each air-conditioning fresh-keeping device comprises an air-conditioning film component, and the two air-conditioning film components are controllably conducted with the two air exhaust devices through the flow path control device; the control method of the refrigerator comprises the following steps:

judging whether the two fresh-keeping spaces need to be subjected to gas adjustment or not;

when one fresh-keeping space needs to be subjected to gas regulation, the flow path control device is controlled to enable the gas regulating membrane component corresponding to the fresh-keeping space to be communicated with the two gas exhaust devices, so that oxygen in the fresh-keeping space enters the two gas exhaust devices more than nitrogen in the fresh-keeping space through the gas regulating membrane component;

when the two fresh-keeping spaces are all required to be subjected to gas regulation, the flow path control device is controlled to enable the two air-regulating membrane assemblies to be respectively communicated with the two air exhaust devices, so that oxygen in each fresh-keeping space passes through the corresponding air exhaust devices relative to nitrogen in the fresh-keeping space and more enters the corresponding air exhaust devices through the corresponding air-regulating membrane assemblies.

Optionally, the control method of the refrigerator further includes: in the process of gas regulation of two fresh-keeping spaces, when one fresh-keeping space completes gas regulation, the flow path control device is controlled to enable the air regulating membrane component corresponding to the other fresh-keeping space to be communicated with the two air extraction devices.

Optionally, the control method of the refrigerator further includes: in the process of carrying out gas regulation on one fresh-keeping space, when the other fresh-keeping space also needs to be subjected to gas regulation, the flow path control device is controlled to enable the two air-conditioning membrane assemblies to be respectively communicated with the two air extraction devices.

Optionally, determining whether the corresponding fresh-keeping space needs to be subjected to gas adjustment or not by detecting the oxygen concentration in each fresh-keeping space, and whether the gas adjustment is completed or not.

Optionally, two storage compartments are further provided in the case, the refrigerator further includes two door bodies, each of the air-conditioning fresh-keeping devices is installed in one of the storage compartments, and each of the door bodies is configured to open or close one of the storage compartments; the control method of the refrigerator further 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 component of the air-conditioning fresh-keeping device corresponding to the door body works or not; if the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a working state, the air-conditioning membrane component of the air-conditioning fresh-keeping device is stopped; wherein, the air-conditioning membrane component of the air-conditioning fresh-keeping device works through the two air extraction devices and is in a working state;

when the door body is closed, detecting whether an air-conditioning membrane component of the corresponding air-conditioning fresh-keeping device is in a state of suspending operation; if the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a suspended working state, the air-conditioning membrane component of the air-conditioning fresh-keeping device is enabled to work continuously; if the corresponding air-conditioning membrane component of the air-conditioning fresh-keeping device is in a stop state, detecting whether the air-conditioning fresh-keeping device is opened or not;

if the air-conditioning fresh-keeping device is opened, judging whether the corresponding fresh-keeping space needs to be subjected to air conditioning or not after the door body is closed for a first preset time; otherwise, after the door body is closed for a second preset time, judging whether the corresponding fresh-keeping space needs to be subjected to gas adjustment or not; the second preset time is smaller than the first preset time.

Optionally, determining whether the two fresh-keeping spaces need to be subjected to gas adjustment is performed when the compressor of the refrigerator is in a stopped state.

Optionally, the preset storage temperatures in the two fresh-keeping spaces are different.

Optionally, the flow path control device is an electric four-way valve, each fresh-keeping space is internally provided with an oxygen concentration sensor, each air extractor comprises a vacuum pump, a compressor bin is arranged in the box body, and two air extractors are installed in the compressor bin.

Optionally, the refrigerator further comprises two moisture permeable devices, two air supply devices and two air guiding devices, wherein a communication port is arranged at the rear part of the upper surface of the air-conditioning fresh-keeping device, each moisture permeable device is arranged at the communication port of one air-conditioning fresh-keeping device, and the moisture permeable devices are provided with moisture permeable films, so that moisture in the fresh-keeping space is permeated in one direction to the outer side of the fresh-keeping space through the moisture permeable films; each air supply device is arranged above one air-conditioning fresh-keeping device, and an air inlet of each air supply device faces to part or all of the area of the corresponding moisture-permeable film; each air guide device is arranged on the upper side of one air-conditioning fresh-keeping device, the rear end of each air guide device is communicated with the cooling chamber of the refrigerator, and the air guide devices are configured to supply air to at least the front part and/or the front part of the air-conditioning fresh-keeping device.

Optionally, the refrigerator further comprises two temperature-control heat conducting devices; the temperature control type heat conduction device is configured to transfer heat generated by the motor to the pump head, and the heat transfer is disconnected after the temperature of the pump head reaches a preset temperature;

the motor comprises a motor shell, and the motor shell and the pump head are both in thermal connection with the temperature control type heat conduction device; the exhaust pipe is wound on the motor shell, and an inlet of the exhaust pipe is communicated with the pump outlet on the pump head; the exhaust pipe is made of heat conduction materials, and the temperature control type heat conduction device is in thermal connection with the motor shell through the exhaust pipe.

In the control method of the refrigerator, as the refrigerator is provided with two air-conditioning fresh-keeping devices, namely two air-conditioning compartments, each air-conditioning compartment is provided with a respective air-conditioning membrane assembly, and two air extraction devices are used for oxygen extraction, the oxygen extraction speed can be obviously improved, and the oxygen reduction speed can be maximally improved. Furthermore, each air-conditioning chamber has own temperature value range, so that the fresh-keeping requirements of different food materials are met. Further, the real-time detection of the oxygen control interval through the oxygen concentration sensor adopts the electric four-way valve to control the passage, and the oxygen reduction speed and the oxygen reduction minimum value of the oxygen control fresh-keeping can be effectively improved through program optimization control, so that the intelligent degree is high.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

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

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

fig. 3 is a schematic operation schematic diagram of a refrigerator according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an air-conditioning fresh-keeping apparatus in a refrigerator according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the modified atmosphere device of FIG. 4;

FIG. 6 is a schematic exploded view of the modified atmosphere device of FIG. 4;

FIG. 7 is a schematic sealing schematic diagram of the modified atmosphere device of FIG. 4;

FIG. 8 is a schematic partial construction view of an air extracting device in the refrigerator of FIG. 1;

fig. 9 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 referring to fig. 2 to 8, an embodiment of the present invention provides a refrigerator. The refrigerator comprises a box body 20, two air-conditioning fresh-keeping devices 30 and a refrigerating system.

The storage compartment is provided in the case 20, and a door is provided at an opening of the storage compartment to open and close the storage compartment. For example, a refrigerating compartment, a freezing compartment, and a temperature changing compartment are provided in the case 20. The storage temperature of the refrigerated compartment is generally between 2 ℃ and 10 ℃, preferably between 3 ℃ and 8 ℃. The temperature in the freezer compartment is typically in the range of-14 to-22 ℃. The temperature change chamber can be adjusted as required to store suitable food, alternatively, the temperature change of the temperature change chamber is in the range of-24 ℃ to 10 ℃. Preferably, the temperature of the variable temperature chamber ranges from-8 ℃ to 0 ℃. The refrigeration system is configured to provide refrigeration to the storage compartment and may be comprised of a compressor, condenser, throttling device, evaporator, and the like.

Each modified atmosphere device 30 may include a storage container and a modified atmosphere membrane assembly 42. Each storage container is internally limited with a fresh-keeping space. The two storage containers are arranged in the storage compartment, and the preset storage temperature in one storage container is different from the preset storage temperature in the other storage container. For example, the plurality of storage compartments, the two air-conditioning fresh-keeping devices 30 are respectively disposed in the two storage compartments, and the preset temperature in each storage compartment may be different, so that the preset storage temperatures in the air-conditioning fresh-keeping devices 30 are different. For another example, the number of the storage compartments is at least two, and two air-conditioning fresh-keeping devices 30 comprising a first storage compartment and a second storage compartment are respectively arranged in the first storage compartment and the second storage compartment. Further, the first storage compartment may be a refrigerated compartment and the second storage compartment may be a variable temperature compartment or a refrigerated compartment. For example, two storage containers may be disposed within one storage compartment, however, the preset storage temperatures within the two storage containers are different.

Each of the air-conditioning membrane assemblies 42 is mounted on the corresponding storage container, and the space around the air-conditioning membrane assemblies 42 is communicated with the corresponding fresh-keeping space, each of the air-conditioning membrane assemblies 42 is provided with at least one air-conditioning membrane and one oxygen-enriched gas collecting cavity, and the air-conditioning membrane assemblies are configured so that oxygen in the air flow around the air-conditioning membrane assemblies 42 can permeate through the air-conditioning membrane more than nitrogen in the air-conditioning membrane assemblies into the oxygen-enriched gas collecting cavity, and the oxygen in the fresh-keeping space can flow out of the fresh-keeping space more than nitrogen.

In the embodiment of the invention, because the air-conditioning fresh-keeping device 30 is provided with two air-conditioning compartments, each air-conditioning compartment is provided with a respective air-conditioning membrane component 42, and each air-conditioning compartment is provided with a temperature value range, the fresh-keeping requirements of different food materials are met. In some alternative embodiments of the invention, the preset temperature storage temperatures within the two storage containers are the same.

Preferably, in this embodiment, the refrigerator further includes two air extracting devices 70 and a flow path control device 80, the air extracting devices 70 having air extracting openings, the flow path control device 80 having 4 communication openings, respectively communicating the two oxygen enriched gas collecting chambers and the two air extracting openings. That is, the two oxygen-enriched gas collecting chambers are controllably connected through the outlet pipe 34 and the flow path control device 80, so that the two air extracting devices can be simultaneously connected with any one of the oxygen-enriched gas collecting chambers, or the two air extracting devices can be simultaneously connected with the two oxygen-enriched gas collecting chambers respectively. Further alternatively, the flow path control device 80 is an electric four-way valve. The two air extraction devices are used for oxygen extraction, so that the oxygen extraction speed can be remarkably improved, and the oxygen reduction speed can be maximally improved.

Further, a compressor compartment for accommodating a compressor is also provided in the box, and the air extractor 70 is disposed in the compressor compartment. The flow control device 80 may be mounted within the compressor compartment adjacent to the suction devices 70, and more preferably, the flow control device 80 is integrated with one of the suction devices 70.

In some embodiments of the present invention, the plurality of modified atmosphere devices 30 includes a first modified atmosphere device 31 disposed in the first compartment and a second modified atmosphere device 32 disposed in the second compartment. The first storage compartment is located above the second storage compartment, and the first air-conditioning fresh-keeping device 31 is located above the second air-conditioning fresh-keeping device 32. The temperature of each fresh-keeping compartment is different, for example, the temperature in the refrigerating compartment 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 temperature changing chamber is set to be 0-minus 3 ℃, which is beneficial to the fresh-keeping requirements of food materials such as meat, seafood and the like.

In some embodiments of the present invention, the refrigerator may further include two moisture permeable devices 41 and two air blowing devices. The air-conditioning fresh-keeping device 30 is internally limited with a fresh-keeping space, and the rear part of the upper surface of the air-conditioning 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 is provided with a moisture permeable film, so that moisture flows unidirectionally, 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 in the fresh-keeping space is permeated in one direction 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 an eddy current fan 50 or a centrifugal fan, and is arranged in the storage compartment and above a corresponding air-conditioning fresh-keeping device 30, and the air inlet of the eddy current fan 50 or the centrifugal fan faces to a part or all of the area of the corresponding moisture-permeable film. When the air supply device is started, the air flow outside the air-conditioning fresh-keeping device 30, especially the air flow outside the moisture permeability device 41, the air circulation near the moisture permeability device 41 is accelerated, the humidity value outside the air-conditioning fresh-keeping device 30 is reduced, the efficiency of the moisture permeability film is prevented from being reduced or the moisture permeability film is completely ineffective, so that the water vapor inside the fresh-keeping space can not be discharged, the moisture permeability efficiency is improved, further, frosting is prevented, and the intelligent and intelligent degree is high. Because have moisture permeability device and air supply arrangement, the air intake of vortex fan or centrifugal fan can be towards the moisture permeability membrane, can accelerate the fresh-keeping device outside air flow of air regulation, reduce the outside humidity value of air regulation fresh-keeping device, especially the humidity value in the moisture permeability membrane outside forms great humidity difference, prevent that moisture permeability membrane efficiency from reducing or inefficacy completely makes the inside steam of fresh-keeping space unable discharge, improve moisture permeability efficiency, and then reduce the inside gathering of steam that the material produced and form condensation or frosting, also can make the indoor cold volume distribution of storing room even as early as possible simultaneously, intelligent degree is high.

In some embodiments of the present invention, the refrigerator further includes two air guides 60. An air supply port 24 can be arranged on the rear wall of each storage compartment, and an air return port 25 is arranged at the lower part of the rear wall of each storage compartment for circulating the refrigerating air flow in the storage compartment. The return air opening 25 is located below the air supply opening 24. The air guide device 60 is disposed above the air conditioning fresh keeping device 30, the rear end of the air guide device 60 is connected to the air supply port 24, and the air guide device 60 is configured to supply air to at least the front and/or the front of the air conditioning fresh keeping device 30. The air guide device 60 guides the air flow to the front part, so that the cold air can be prevented from directly blowing to adjust the rear wall of the fresh-keeping device 30, the local temperature of the rear wall surface is prevented from being too low to form frosting on the inner wall surface, the user experience is affected, and the air supply can be ensured not to directly blow the rear wall surface of the drawer to cause frosting. Further, the air guiding device 60 is spaced from the upper surface of the air conditioning and preserving device 30, so that the air flows around the air conditioning and preserving device 30 in the storage room.

In some embodiments of the present invention, the air-conditioning membrane module 42 is preferably disposed on the front side of the moisture permeable device 41. The lower surface of the air guide 60 is provided with a relief groove 61 extending in the front-rear direction, and the vortex fan 50 or the centrifugal fan is mounted to the rear end of the relief groove 61. The structure is compact, the volume is small, and the air flow of the air supply device is convenient to blow out. The air outlet of the vortex fan 50 or the centrifugal fan may be directed forward. Further, the upper limiting surface of the relief groove 61 is inclined, and 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 port 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 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 grille is vertically arranged, and the grille holes are outlets. The special arrangement form of the flow fan or the centrifugal fan and the abdication groove can enable the storage compartment to be compact in structure, reasonable in layout, convenient for airflow to flow and low in noise, and gives people comfortable feeling.

In some embodiments of the present invention, the storage container of the controlled atmosphere device 30 includes a drawer 31 and an upper cover 32, the drawer 31 is slidably mounted in the storage compartment by a slide rail assembly 39, and the upper cover 32 is used to seal the upper opening of the drawer 31. In order to facilitate the taking and closing of the drawer 31, the modified atmosphere fresh-keeping device 30 further includes a lifting device, the upper cover 32 is movably disposed on the upper side of the drawer 31, and the drawer 31 is configured to drive the upper cover 32 to descend by the lifting device when moving backward, so as to close the drawer 31. The moisture permeable device 41 and the air conditioning membrane module 42 are mounted to the upper cover 32.

In some embodiments of the invention, the refrigerator may further comprise a humidity detection device configured to detect humidity within the fresh space and/or humidity outside the fresh space and within the storage compartment. The vortex fan 50 or centrifugal fan is configured to be activated in response to a humidity value detected by the humidity detection means. For example, the humidity detection means includes a first humidity detection means and a second humidity detection means. 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 is positioned in the storage compartment, and the second humidity value is obtained by detecting the humidity outside the fresh-keeping space and positioned in the storage compartment. 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 a first preset value until the 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 device is specifically used, 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 yes, the vortex fan 50 or the centrifugal fan is not started. Further, whether the difference between the first humidity value and the second humidity value is smaller than a second preset value is continuously judged, and 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 an operating state. According to the difference between the first humidity value and the second humidity value, the opening of the vortex fan 50 or the centrifugal fan is controlled, when the moisture permeation device 41 performs the unidirectional moisture permeation operation, the humidity in the fresh-keeping space is gradually reduced, the external humidity is gradually increased, the difference between the two is smaller and smaller until the difference is smaller than or equal to the 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 gradually decreases again, the external humidity is reduced under the action of the vortex fan 50 or the centrifugal fan, then the basic of the reduction is unchanged, the reduction or the rising rate is reduced, 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 on the outside is smaller, the humidity in the fresh-keeping space can be considered to be lower, the requirement is met, the difference between the inside and the outside is insufficient to enable the moisture permeable device 41 to work, and the vortex fan 50 or the centrifugal fan is stopped, so that the energy is saved.

It should be noted that, for some reason, for example, when the humidity in the storage compartment suddenly increases, the vortex fan 50 or the centrifugal fan may be in a closed state at this time, if the difference between the first humidity value and the second humidity value is determined to be smaller than the first preset value, or even smaller than the second preset value, the vortex fan 50 or the centrifugal fan is turned on first, and after the vortex fan 50 or the centrifugal fan is turned on, the humidity value outside the fresh-keeping space is obviously reduced, so as to ensure the moisture permeability efficiency of the moisture permeability device 41. Optionally, in order to further improve the control accuracy and prevent misoperation caused by the condition 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 smaller than a second preset value, judging whether the first humidity value is larger than the preset humidity value or not; and when the difference 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 turned off.

In some embodiments of the present invention, the storage container of the controlled atmosphere device 30 further comprises a barrel 38 having a forward opening, the drawer 31 is movably mounted in the barrel 38 back and forth, and the barrel 38 is mounted in the storage compartment. The upper wall of the cylinder 38 has a bottom plate and a front grill of the air guide 60, i.e., the bottom plate and the front grill may be integrally formed and serve as the upper wall of the cylinder. Further, the case 20 further includes an upper cover plate 35 and a lower cover plate 36, the upper cover plate 35 and the lower cover plate 36 define the storage compartment, and the upper 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 60 may also be said to include an upper outer cover 35 and an upper wall of the cylinder 38. The lower outer cover 36 is provided on the underside, left and right sides and the remainder of the rear side of the barrel 38.

In some embodiments of the present invention, the lifting device includes a lifting bracket 71, a connection frame 72, a spring 73, a roller 74, and a pressing table 75.

The lifting bracket 71 is mounted on the cylinder 38, the link frame 72 is mounted on the lifting bracket 71 in a lifting manner, the upper cover 32 is mounted on the link frame 72, the spring 73 is used for urging the link frame 72 to move upward, and the roller 74 is rotatably mounted on the lower end of the link frame 72 along an axis extending in the left-right direction. The pressing table 75 is disposed on a side wall of the drawer, and is used for gradually moving the roller 74 downward along the inclined side surface of the pressing table 75 during the inward movement of the drawer 31, so as to drive the upper cover 32 to move downward for sealing. After the drawer 31 is completely pushed into the cylinder 38, the roller 74 is positioned at 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, thereby keeping the drawer 31 closed.

In some embodiments of the invention, the refrigerator further includes an exhaust duct 93, and the air extractor 70 further includes a vacuum pump having a pump head 91 with a pump outlet and a motor including a motor housing 92. The exhaust pipe 93 is wound around the motor housing 92, and an inlet of the exhaust pipe 93 communicates with a 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 extractor 70 is a vacuum pump, the heating of the vacuum pump is concentrated on a motor part, namely a key part for cooling, the outlet of the vacuum pump is connected with the exhaust pipe 93 by a plastic pipe, the temperature of the motor is reduced by cold air through the exhaust pipe 93 through temperature conduction, the temperature of the motor is reduced by forced convection of high-speed air through the exhaust pipe 93, and noise reduction is realized by prolonging the total length of the exhaust.

Further, the refrigerator further includes a bimetal thermal conduction device 95, the motor housing 92 and the pump head 91 are thermally connected to the bimetal thermal conduction device 95, the bimetal thermal conduction device 95 is configured to transfer heat generated by the motor to the pump head 91, and the heat transfer is disconnected 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 heated at high temperature, so that frosting and icing of the pump head 91 are prevented; when the temperature of the pump head 91 is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head 91. After the temperature is lowered, the bimetal thermal conduction device 95 is reset to conduct heat transfer. The bimetallic strip heat conduction device 95 is utilized, the structure is simple, the cost is low, and the service life is long. Further, the motor housing 92 is directly utilized for cooling, the structure of the motor and the air extractor 70 is not changed, the practicability is strong, and the cost is low. In some embodiments of the present invention, the exhaust tube 93 is made of a thermally conductive material, and the bimetal thermal conduction 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 housing 92. The bi-metallic strip heat transfer device 95 is thermally coupled to the end of the outlet tube segment that is coupled to the winding tube segment. 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. Heat is transferred through the exhaust pipe 93, so that the temperature of the pump head 91 is not raised too fast and too high, which causes frequent temperature change of the pump head 91, frequent actions of the bimetal heat conduction device 95, and influences the service life and performance of the pump head 91.

By arranging the temperature control type heat conduction device, when the temperature of the pump head is low, the pump head is heated by high temperature generated by the motor, so that frosting and icing of the pump head are prevented; when the temperature of the pump head is high, the heat transfer is disconnected, and the high temperature on the motor is prevented from continuously heating the pump head. Can reduce or prevent frosting and icing at the pump head, ensure the performance of the vacuum pump and prolong the reliability of the vacuum pump. The pump is connected with the exhaust pipe, the temperature of the motor is reduced by cold air through the exhaust pipe through temperature conduction, the temperature of the motor is reduced by high-speed air through forced convection of the exhaust pipe, and noise reduction is realized by prolonging the total length of the exhaust. Prevent that motor temperature from too high influence air exhaust device's life, also can reduce the noise that air exhaust device produced, improve user experience effect. The temperature control type heat conduction device can also prevent the heat of the pump head from being continuously heated, and the heat dissipation effect of the motor is affected.

The present invention also provides a control method of a refrigerator, and fig. 9 is a schematic flowchart of a control method of a refrigerator according to an embodiment of the present invention, as shown in fig. 9, the control method of a refrigerator includes:

judging whether the two fresh-keeping spaces need to be subjected to gas adjustment. That is, it is judged whether or not oxygen control is required for two fresh-keeping spaces to obtain an excellent fresh-keeping effect. The two fresh-keeping spaces can be judged at the same time or according to different requirements.

When a fresh-keeping space needs to be subjected to gas adjustment, the flow path control device 80 is controlled to enable the gas-adjusting membrane assembly 42 corresponding to the fresh-keeping space to be communicated with the two air extraction devices 70, so that oxygen in the fresh-keeping space passes through the gas-adjusting membrane assembly 42 more than nitrogen in the fresh-keeping space enters the two air extraction devices 70. The two air extraction devices are used for oxygen extraction, so that the oxygen extraction speed can be remarkably improved, and the oxygen reduction speed can be maximally improved.

When gas adjustment is required for both fresh-keeping spaces, the flow path control device 80 is controlled to enable the two air-conditioning membrane assemblies to be respectively communicated with the two air extraction devices 70, so that oxygen in each fresh-keeping space passes through the corresponding air extraction device 70 more than nitrogen in each fresh-keeping space. Ensuring the oxygen reduction requirement.

In some embodiments of the present invention, during the process of gas adjustment of both fresh-keeping spaces, when one fresh-keeping space completes gas adjustment, the flow path control device 80 is controlled to enable the gas-regulating membrane module 42 corresponding to the other fresh-keeping space to be communicated with both the air extraction devices 70. In the process of performing gas adjustment on one fresh-keeping space, when the other fresh-keeping space also needs to be subjected to gas adjustment, the flow path control device 80 is controlled to enable the two air-conditioning film assemblies 42 to be respectively communicated with the two air extraction devices 70. That is, whenever the two fresh spaces require oxygen reduction, the two air conditioning membrane modules 42 are respectively communicated with the two air extraction devices 70; when oxygen reduction is needed in one fresh-keeping space, the corresponding air regulating membrane assembly 42 is communicated with the two air extracting devices 70. Ensures the oxygen reduction speed and the oxygen reduction effect, and is convenient for storing articles.

In some examples of the invention, the concentration of oxygen in each fresh-keeping space is detected to judge whether the corresponding fresh-keeping space needs to be subjected to gas adjustment or not, and whether the gas adjustment is completed or not. Specifically, an oxygen concentration sensor is arranged in each fresh-keeping space. The oxygen concentration sensor is used for detecting the oxygen control interval in real time, the electric four-way valve is used for controlling the passage, and the oxygen reduction speed and the oxygen reduction minimum value of oxygen control fresh-keeping can be effectively improved through program optimization control. The judgment of whether two fresh-keeping spaces need to be subjected to gas adjustment is performed when the compressor of the refrigerator is in a stop state. The compressor is stopped to control oxygen, so that interference between oxygen control and refrigeration can be reduced.

In some embodiments of the invention, each controlled atmosphere device is mounted in one storage compartment, and each door is configured to open or close one storage compartment; the control method of the refrigerator further comprises the following steps: and detecting whether the door body is opened or not. When the door body is opened, whether the air-conditioning membrane component of the air-conditioning fresh-keeping device corresponding to the door body works or not is judged. If the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a working state, the air-conditioning membrane component of the air-conditioning fresh-keeping device is enabled to stop working. Wherein, the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a working state by the two air extraction devices. When the door body is closed, detecting whether the air-conditioning membrane component of the corresponding air-conditioning fresh-keeping device is in a state of suspending operation. If the air-conditioning membrane component of the air-conditioning fresh-keeping device is in a suspended working state, the air-conditioning membrane component of the air-conditioning fresh-keeping device is enabled to work continuously. If the air-conditioning membrane component of the corresponding air-conditioning fresh-keeping device is in a stop state, detecting whether the air-conditioning fresh-keeping device is opened or not. If the air-conditioning fresh-keeping device is opened, judging whether the corresponding fresh-keeping space needs to be subjected to air conditioning or not after the door body is closed for a first preset time. Otherwise, after the door body is closed for a second preset time, judging whether the corresponding fresh-keeping space needs to be subjected to gas adjustment. The second preset time is less than the first preset time. Ensure the association uniformity of oxygen reduction and refrigeration, be convenient for article storage, intelligent degree is high.

Each door is configured to control both controlled atmosphere devices 30 in unison when one storage compartment is opened or closed. Alternatively, each air-conditioning fresh-keeping device 30 may be controlled independently, and then one air-conditioning membrane assembly is disconnected from the air extractor 70 by the flow path control device 80, so that the air-conditioning membrane assembly of the air-conditioning fresh-keeping device 30 is in a stopped state or in a suspended working state. That is, when one of the air moving membrane modules 42 is not in operation, both of the air extraction devices 70 may be in operation.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. The refrigerator control method is characterized by comprising a refrigerator body, two air-conditioning fresh-keeping devices, a flow path control device and two air exhaust devices, wherein the two air-conditioning fresh-keeping devices are arranged in the refrigerator body, a fresh-keeping space is limited in each air-conditioning fresh-keeping device, each air-conditioning fresh-keeping device comprises an air-conditioning membrane component, and the two air-conditioning membrane components are controllably conducted with the two air exhaust devices through the flow path control device; the refrigerator comprises a refrigerator body, at least two storage compartments, at least two door bodies and an air-conditioning fresh-keeping device, wherein the at least two storage compartments are arranged in the refrigerator body, each air-conditioning fresh-keeping device is arranged in one storage compartment, and each door body is configured to open or close one storage compartment; the control method of the refrigerator comprises the following steps:

when the two fresh-keeping spaces are required to be subjected to gas regulation, the flow path control device is controlled to enable the two air-regulating membrane assemblies to be respectively communicated with the two air extraction devices, so that oxygen in each fresh-keeping space passes through the corresponding air extraction devices more than nitrogen in each fresh-keeping space;

the control method of the refrigerator further comprises the following steps:

detecting whether the door body is opened or not;

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

in the process of gas regulation of two fresh-keeping spaces, when one fresh-keeping space completes gas regulation, the flow path control device is controlled to enable the air regulating membrane component corresponding to the other fresh-keeping space to be communicated with the two air extraction devices.

3. The control method of a refrigerator according to claim 1, further comprising:

in the process of carrying out gas regulation on one fresh-keeping space, when the other fresh-keeping space also needs to be subjected to gas regulation, the flow path control device is controlled to enable the two air-conditioning membrane assemblies to be respectively communicated with the two air extraction devices.

4. A control method of a refrigerator according to claim 2 or 3, wherein,

and judging whether the corresponding fresh-keeping space needs to be subjected to gas adjustment or not and whether the gas adjustment is finished or not by detecting the oxygen concentration in each fresh-keeping space.

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

judging whether the two fresh-keeping spaces need to be subjected to gas adjustment or not is carried out when the compressors of the refrigerator are in a stop state.

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

the preset storage temperatures in the two fresh-keeping spaces are different.

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

the flow path control device is an electric four-way valve, each fresh-keeping space is internally provided with an oxygen concentration sensor, each air extractor comprises a vacuum pump, a compressor bin is arranged in the box body, and two air extractors are installed in the compressor bin.

8. The control method of a refrigerator according to claim 1, wherein the refrigerator further comprises two moisture permeable devices, two air supplying devices and two air guiding devices, a communication port is provided at the rear of the upper surface of the modified atmosphere preservation device, each of the moisture permeable devices is installed at the communication port of one of the modified atmosphere preservation devices, and the moisture permeable devices has a moisture permeable film so that moisture in the preservation space is unidirectionally permeated to the outside of the preservation space through the moisture permeable film; each air supply device is arranged above one air-conditioning fresh-keeping device, and an air inlet of each air supply device faces to part or all of the area of the corresponding moisture-permeable film; each air guide device is arranged on the upper side of one air-conditioning fresh-keeping device, the rear end of each air guide device is communicated with the cooling chamber of the refrigerator, and the air guide devices are configured to supply air to at least the front part and/or the front part of the air-conditioning fresh-keeping device.

9. The control method of a refrigerator according to claim 1, wherein the refrigerator further comprises two temperature-controlled heat conductive devices; the temperature control type heat conduction device is configured to transfer heat generated by the motor to the pump head, and the heat transfer is disconnected after the temperature of the pump head reaches a preset temperature;