WO2022257786A1

WO2022257786A1 - Vacuum storage device, air extraction control method, and refrigerator

Info

Publication number: WO2022257786A1
Application number: PCT/CN2022/095654
Authority: WO
Inventors: 吕鹏; 张�浩; 昝朝
Original assignee: 重庆海尔制冷电器有限公司; 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2021-06-11
Filing date: 2022-05-27
Publication date: 2022-12-15
Also published as: CN115468367A; CN115468367B

Abstract

An air extraction control method for a vacuum storage device. The vacuum storage device comprises an air extraction base and one or more storage boxes, wherein the air extraction base is provided with a plurality of placement tanks, and a first air extraction port is respectively formed at each placement tank; a vacuum pump is further provided in the air extraction base; a storage space is defined in each storage box, and each storage box is provided with an air extraction port; and each placement tank is respectively provided with one microswitch. The method comprises: detecting whether there is a microswitch changing from an untriggered state to a triggered state; and controlling a vacuum pump to start to extract air when it is detected that there is a microswitch changing from the untriggered state to the triggered state. The vacuum storage device has simple air extraction control logic, is easy to operate, and has high control efficiency. Further provided are a vacuum storage device and a refrigerator.

Description

Vacuum storage device, air extraction control method and refrigerator

technical field

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

Background technique

Along with the raising of people's living standard, consumer's demand to refrigerator is also more and more higher, in order to improve the fresh-keeping performance of refrigerator, the refrigerator with vacuum pumping function has appeared in the prior art, has been subjected to the favor of consumer. The principle of this kind of refrigerator is to use a vacuum pump to vacuumize a certain room of the refrigerator, which has the problem of inconvenient access to food materials, and the unreasonable arrangement of components in the vacuum preservation part leads to a decrease in the effective use volume of the refrigerator.

Contents of the invention

An object of the present invention is to overcome at least one defect in the prior art, and provide a vacuum storage device for convenient food storage.

A further object of the present invention is to provide a vacuum storage device that is easy to vacuum and has a good fresh-keeping effect.

In particular, the present invention provides a method for controlling the suction of a vacuum storage device. The vacuum storage device includes a suction base and one or more storage boxes, wherein one or more storage slots are formed on the suction base, Each placement groove is respectively formed with a first air suction port, and a vacuum pump is also arranged in the air suction base. Each storage box defines a storage space and is formed with an air suction port. Evacuate part or all of the air in the storage space; and each placement slot is also provided with a micro switch, wherein the method includes:

Detect whether a micro switch changes from an untriggered state to a triggered state;

When it is detected that the micro switch has changed from the untriggered state to the triggered state, the vacuum pump is controlled to turn on and start to pump air.

Optionally, before or after the step of controlling the opening of the vacuum pump, the method further comprises:

Get the number of storage boxes on the extraction base.

Optionally, after the step of obtaining the number of storage boxes on the suction base, the method further includes:

Calculate the product of the number of storage boxes and the preset single-box pumping time threshold to obtain the target pumping time;

Determine whether the opening time of the vacuum pump is greater than or equal to the target pumping time;

When the opening time of the vacuum pump is greater than or equal to the target pumping time, control the vacuum pump to shut down and stop pumping.

Optionally, when the opening time of the vacuum pump is shorter than the target pumping time, it is detected again whether there is a microswitch changed from the untriggered state to the triggered state;

If not, control the vacuum pump to continue pumping until the opening time is greater than or equal to the target pumping time;

If so, retrieve the number of storage boxes on the suction base.

Optionally, after the step of controlling the shutdown of the vacuum pump, the method further includes:

Determine whether the storage time of the storage box is greater than or equal to the sum of the target pumping time and the preset vacuum maintenance time threshold;

If so, control the vacuum pump to restart.

Judging whether the shutdown time of the vacuum pump is greater than or equal to the preset vacuum degree maintenance time threshold;

If so, control the vacuum pump to restart.

Optionally, the step of obtaining the number of storage boxes on the air extraction base includes:

Obtain the number of microswitches that are in the triggered state, and get the number of storage boxes on the suction base.

The present invention also provides a vacuum storage device, comprising:

suction base;

storage boxes; and

The controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, the aforementioned air extraction control method is realized.

Optionally, a micro switch is provided on the top wall of the placement slot, and when the storage box is placed in the placement slot, the micro switch is touched, so that the micro switch changes from an untriggered state to a triggered state.

The present invention also provides a refrigerator with the aforementioned vacuum storage device.

In the vacuum storage device of the present invention, a plurality of storage slots are formed on the suction base, each storage slot is respectively formed with a first suction port, a vacuum pump is also arranged in the suction base, and each storage box defines a The storage space is formed with a suction port, and the vacuum pump sequentially pumps out part or all of the air in the storage space through the first suction port and the suction port, so that the same suction base can be used for a variety of storage boxes, and the scope of application is wider, and can It is convenient to take ingredients into the storage box to improve the user experience; by setting a micro switch at each storage slot, and setting it so that when it is detected that the micro switch changes from the untriggered state to the triggered state, The vacuum pump is controlled to start to start pumping, so that the control logic of the vacuum storage device is simple, easy to operate, and has high control efficiency.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of 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 illustration and not limitation with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

FIG. 1 is a schematic diagram of a door liner and a vacuum storage device of a refrigerator having a vacuum storage device according to an embodiment of the present invention.

FIG. 2 is a schematic structural view of the suction base of the vacuum storage device shown in FIG. 1 .

Fig. 3 is another schematic structural view of the suction base of the vacuum storage device shown in Fig. 1 .

FIG. 4 is a schematic cross-sectional view of the suction base of the vacuum storage device shown in FIG. 1 .

FIG. 5 is a schematic cross-sectional view of a storage box of the vacuum storage device shown in FIG. 1 .

FIG. 6 is a schematic cross-sectional view of some parts of the cover of the vacuum storage device shown in FIG. 1 .

Fig. 7 is a schematic exploded exploded view of the cover of the vacuum storage device shown in Fig. 1 .

Fig. 8 is a schematic flowchart of a method for controlling air extraction of a vacuum storage device according to an embodiment of the present invention.

Fig. 9 is a schematic diagram showing the composition of some components of the vacuum storage device shown in Fig. 8 .

FIG. 10 is a detailed flow chart of the air extraction control method of the vacuum storage device shown in FIG. 8 .

Detailed ways

FIG. 1 is a schematic diagram of a door liner and a vacuum storage device 200 of a refrigerator provided with a vacuum storage device 200 according to an embodiment of the present invention. FIG. 2 is a schematic structural view of the suction base 300 of the vacuum storage device 200 shown in FIG. 1 . FIG. 3 is another structural schematic diagram of the suction base 300 of the vacuum storage device 200 shown in FIG. 1 . FIG. 4 is a schematic cross-sectional view of the suction base 300 of the vacuum storage device 200 shown in FIG. 2 . FIG. 5 is a schematic cross-sectional view of the storage box 400 of the vacuum storage device 200 shown in FIG. 1 . FIG. 8 is a schematic flowchart of a method for controlling air extraction of a vacuum storage device 200 according to an embodiment of the present invention. FIG. 9 is a schematic diagram of some components of the vacuum storage device 200 shown in FIG. 8 . FIG. 10 is a detailed flow chart of the air extraction control method of the vacuum storage device 200 shown in FIG. 8 .

The embodiment of the present invention provides a refrigerator, which may generally include a box body, a door body and a vacuum storage device 200 . There is at least one storage compartment with an open front side defined in the casing, usually a plurality of compartments, such as refrigerator compartments, freezer compartments, temperature-changing compartments, and the like. The number and functions of the specific storage compartments can be configured according to the pre-demand. The storage temperature of the refrigerator can be 2-9°C, or 4-7°C; the storage temperature of the freezer can be -22--14°C. ℃. The variable temperature room can be adjusted according to needs to store suitable food, or as a fresh storage room. The storage compartment can be cooled by a compression refrigeration system. The vacuum storage device 200 is disposed on the inner side of the door body, and the suction base 300 is fixed to the door liner 120 of the door body. The vacuum storage device 200 can provide a sealed space for precious food materials (such as ginseng, sea cucumber, wolfberry, tonic medicinal materials, condiments, etc.), and vacuumize the sealed space to reduce oxidative deterioration and prevent the odor of food materials. At the same time, since the vacuum storage device 200 is arranged on the inner side of the door body, it is convenient for the user to take it at any time, and there is no need to go to the depth of the box to pick and place food. As shown in Figure 1, the inner side of the door liner 120 is provided with a hanging lug 121, and the vacuum storage device 200 is provided with a hanging groove on the suction base 300. Storage device 200.

As shown in FIG. 1 , FIG. 2 and FIG. 9 , the vacuum storage device 200 of the embodiment of the present invention generally includes: an air extraction base 300 and one or more storage boxes 400 . One or more placement slots 311 are formed on the air extraction base 300 , and each placement slot 311 is respectively formed with a first air extraction port 310 . A vacuum pump 302 is also arranged in the suction base 300 . Each storage box 400 defines a storage space 410 and is formed with an air suction port 420 . The vacuum pump 302 pumps out part or all of the air in the storage space 410 through the first air outlet 310 and the air outlet 420 in sequence. Moreover, each placement slot 311 is also provided with a micro switch 308 respectively.

The air extraction control method of the vacuum storage device 200 in the embodiment of the present invention includes the following steps:

S102: Detect whether the micro switch 308 changes from the untriggered state to the triggered state;

S104: When it is detected that the micro switch 308 changes from the untriggered state to the triggered state, control the vacuum pump 302 to turn on and start pumping air.

In the vacuum storage device 200 of the embodiment of the present invention, a plurality of placement grooves 311 are formed on the suction base 300, each placement groove 311 is respectively formed with a first suction port 310, and a vacuum pump 302 is also arranged in the suction base 300 Each storage box 400 defines a storage space 410 and is formed with a suction port 420. The vacuum pump 302 sequentially pumps out part or all of the air in the storage space 410 through the first suction port 310 and the suction port 420, so that the same pumping The base 300 can be applied to a variety of storage boxes 400, and has a wider application range, and can conveniently take food materials into the storage box 400 to improve user experience; by integrating a vacuum pump 302 in the air extraction base 300, multiple The simultaneous suction of the storage box 400 makes the composition of the suction components simple. The vacuum storage device 200 of the embodiment of the present invention is also provided with a micro switch 308 at each placement slot 311, and is configured to control the vacuum pump when it is detected that the micro switch 308 changes from the untriggered state to the triggered state. 302 is turned on to start pumping, so that the control logic of the vacuum storage device 200 is very simple, easy to operate, and has high control efficiency. In the present invention, the untriggered state of the microswitch 308 refers to the state of the microswitch 308 when no storage box 400 is placed in the placement slot 311 corresponding to the microswitch 308. Correspondingly, the microswitch 308 The triggered state of the microswitch 308 refers to the state of the microswitch 308 when the storage box 400 is placed in the slot 311 corresponding to the microswitch 308 . The change of the micro switch 308 from the non-triggered state to the triggered state means that the slot 311 corresponding to the micro switch 308 has changed from no storage box 400 to a storage box 400 .

The vacuum storage device 200 of the embodiment of the present invention also includes: a controller 305, including a memory 352 and a processor 351, wherein the memory 352 stores a machine-executable program 353, and when the machine-executable program 353 is executed by the processor 351, the aforementioned Air extraction control method. Wherein, referring to FIG. 4 , a microswitch 308 is arranged on the top wall of the placement groove 311, and the storage box 400 touches the microswitch 308 when placed in the placement groove 311, so that the microswitch 308 changes from an untriggered state to a triggered state. state. The micro switch 308 can be fixed on the top wall of the placement groove 311 by a fixing frame 350 , and the head of the micro switch 308 is beyond the placement groove 311 .

In some embodiments, before or after the step of controlling the start of the vacuum pump 302 , the air extraction control method of the vacuum storage device 200 in the embodiment of the present invention further includes: obtaining the number of storage boxes 400 on the air extraction base 300 . In some embodiments, the step of obtaining the number of storage boxes 400 on the suction base 300 includes: obtaining the number of microswitches 308 in a triggered state to obtain the number of storage boxes 400 on the suction base 300 . By using the number of microswitches 308 in the triggered state as the number of storage boxes 400 on the suction base 300, no additional components for obtaining the number of storage boxes 400 are required, and the structure of the entire vacuum storage device 200 is more efficient. It is simple and easy to configure; at the same time, the state of the micro switch 308 is closely related to whether the storage box 400 is placed, so that the quantity of the storage box 400 on the air extraction base 300 can be accurately determined, thereby making the air extraction control more precise. for precision.

In some embodiments, after the step of acquiring the number of storage boxes 400 on the air extraction base 300, the air extraction control method of the vacuum storage device 200 in the embodiment of the present invention further includes:

Calculate the product of the number of storage boxes 400 and the preset single box pumping time threshold to obtain the target pumping time;

Judging whether the opening time of the vacuum pump 302 is greater than or equal to the target pumping time;

When the start time of the vacuum pump 302 is greater than or equal to the target pumping time, the vacuum pump 302 is controlled to be turned off, and the pumping is stopped.

The preset single-box pumping time threshold is the pumping time required to reach the target vacuum degree in the storage box 400 , for example, it can be 3 minutes, 5 minutes, or 7 minutes.

And when the turn-on time of the vacuum pump 302 is less than the target pumping time, the pumping control method of the vacuum storage device 200 in the embodiment of the present invention further includes:

Detect again whether microswitch 308 is changed from untriggered state to triggered state;

If not, control the vacuum pump 302 to continue pumping until the opening time is greater than or equal to the target pumping time;

If so, reacquire the quantity of storage boxes 400 on the suction base 300, and determine a new target pumping duration based on the quantity of reacquired storage boxes 400, and further control the vacuum pump 302 to continue pumping until the opening time is greater than or equal to the new one. The target pumping time for .

When the vacuum storage device 200 of the embodiment of the present invention is in use, when the user places the storage box 400 on the suction base 300, the new microswitch 308 will change from the untriggered state to the triggered state. The vacuum pump 302 is turned on to pump air. During the pumping process of the vacuum pump 302, if the user adds a storage box 400 to the pumping base 300, a new micro switch 308 will change from the untriggered state to the triggered state at this time. If it is complete, the number of storage boxes 400 on the air extraction base 300 needs to be re-checked, and the new target air extraction time is determined by the number of storage boxes 400 obtained again. The air extraction control method in the embodiment of the present invention is controlled entirely based on the state of the micro switch 308, so that the air extraction control can realize the complete air extraction of each storage box 400 without any operation by the user, and there will be no omissions Gas situation.

In some embodiments, after the step of controlling the shutdown of the vacuum pump 302, the air extraction control method of the vacuum storage device 200 in the embodiment of the present invention further includes:

Judging whether the storage time of the storage box 400 is greater than or equal to the sum of the target pumping time and the preset vacuum maintenance time threshold;

If so, control the vacuum pump 302 to restart.

The pumping control method of the embodiment of the present invention proposes that when the storage time of the storage box 400 is greater than or equal to the sum of the target pumping time and the preset vacuum degree maintenance time threshold, the vacuum pump 302 is forced to be turned on to pump again, thereby avoiding long If the air is not pumped for a while, the storage space 410 can no longer maintain a vacuum fresh-keeping environment, which affects the storage effect of food materials. The storage time of the storage box 400 may be calculated starting from the time when the storage box 400 is placed on the suction base 300 . The preset vacuum maintenance time threshold may be, for example, 5-10 days.

In other embodiments, after the step of controlling the shutdown of the vacuum pump 302, the air extraction control method of the vacuum storage device 200 in the embodiment of the present invention further includes:

Judging whether the shutdown time of the vacuum pump 302 is greater than or equal to the preset vacuum degree maintenance duration threshold;

If so, control the vacuum pump 302 to restart.

The pumping control method of the embodiment of the present invention proposes that when the shutdown time of the vacuum pump 302 is greater than or equal to the preset vacuum degree maintenance time threshold, the vacuum pump 302 is forced to be restarted to start the pumping, thereby avoiding the occurrence of storage without pumping for a long time The vacuum preservation environment can no longer be maintained in the space 410, which affects the storage effect of food materials. The preset vacuum maintenance time threshold may be, for example, 5-10 days.

As shown in FIG. 10 , it is a detailed flow chart of the air extraction control method of the vacuum storage device 200 according to the embodiment of the present invention. The air extraction control method includes the following steps:

Power on the refrigerator;

S202: Detect whether the micro switch 308 changes from the untriggered state to the triggered state; if the judgment result of step S202 is yes, execute step S204;

S204: Obtain the quantity i of the storage boxes 400 on the suction base 300;

S206: Control the vacuum pump 302 to turn on and pump air;

S208: Determine whether the opening time of the vacuum pump 302 is greater than or equal to the product of the number i of the storage boxes 400 and the preset single box pumping time threshold t; if the determination result of step S208 is yes, execute step S210; if the determination result of step S208 If no, execute step S212;

S210: Control the vacuum pump 302 to shut down without pumping air; after step S210 is executed for a period of time, step S214 is executed; for example, after step S210 is executed to preset the interval threshold, step S214 is executed, and the preset interval threshold can be, for example, 3 days ,5 days.

S212: Detect whether the micro switch 308 changes from the untriggered state to the triggered state; if the judgment result of step S212 is yes, execute step S204; if the judgment result of step S212 is no, continue to execute step S208;

S214: After step S210 is executed to preset the interval threshold, determine whether the storage time of the storage box 400 is greater than or equal to the product of the number i of the storage box 400 and the preset single-box pumping time threshold t and the preset vacuum maintenance time The sum of the threshold q; if the judgment result of step S214 is yes, execute step S204.

In the above air pumping control method, step S214 may also be: determine whether the shutdown time of the vacuum pump 302 is greater than or equal to a preset vacuum degree maintenance time threshold q.

The structure of the vacuum storage device 200 according to the embodiment of the present invention will be described in detail below with reference to FIG. 2 to FIG. 7 .

The storage box 400 of the vacuum storage device 200 of the embodiment of the present invention is detachably fixed to the suction base 300, as shown in Figures 1 and 5, the storage box 400 includes a box body 406 and a cover body 500, the box body 406 includes an inner box body 401 and an outer box body 402, wherein the inner box body 401 defines a storage space 410; the outer box body 402 is sleeved outside the inner box body 401 and has a gap 403 between the inner box body 401 and the outer box body 401. A suction port 420 is formed on the box body 402 , and the vacuum pump 302 sequentially pumps out part or all of the gas in the storage space 410 through the first suction port 310 , the suction port 420 , and the gap 403 . The storage box 400 of the embodiment of the present invention includes an inner box body 401 and an outer box body 402. By setting the outer box body 402 outside the inner box body 401 and having a gap 403 between the inner box body 401, the outer box body 402 A suction port 420 is formed on the top, so that the vacuum pump 302 sequentially pumps out part or all of the gas in the storage space 410 through the first suction port 310, the suction port 420, and the gap 403, so as to avoid the food materials in the storage space 410 from falling and blocking the suction port 420.

The bottom wall of the outer box body 402 of the storage box 400 in the embodiment of the present invention defines an air suction port 420 . The storage box 400 of the embodiment of the present invention also includes: a box body pumping switch 404, which is arranged at the pumping port 420, wherein the box body pumping switch 404 is an elastic member, and is configured such that: the vacuum pump 302 is turned on, and the box body pumping switch 404 is moved downward by the suction force to form an air suction channel with the air suction port 420; after the air suction is completed, the box body suction switch 404 recovers and deforms upwards and closes the air suction port 420. By setting the box body suction switch 404, after the suction is completed, the suction port 420 of the storage box 400 can be kept sealed, and the user can continue to place the storage box 400 on the suction base 300, or put the storage box Putting the storage box 400 into other spaces of the refrigerator, or placing the storage box 400 outside the refrigerator, the storage box 400 can still maintain a vacuum state, so that the vacuum storage device 200 has multiple application modes.

The first air suction port 310 is provided on the top wall of the air suction base 300 of the vacuum storage device 200 in the embodiment of the present invention. The suction base 300 also includes: a base suction switch 303, which is arranged at the first suction port 310, and is configured such that the storage box 400 is placed at the first suction port 310, and the base suction switch 303 is controlled by the storage box 400. The action of gravity moves downward and forms an air suction channel with the first air suction port 310 ; the storage box 400 is removed from the air suction base 300 , and the base air suction switch 303 moves upward to close the first air suction port 310 . As shown in FIG. 4 , the air extraction base 300 includes a base body 301 , and a first air extraction port 310 is opened on the top wall of the base body 301 . The suction base 300 of the embodiment of the present invention configures the base suction switch 303 so that when the storage box 400 is placed at the first suction port 310 , based on the gravitational effect of the storage box 400 , it will be between the first suction port 310 A suction channel is formed, and after the storage box 400 is removed, the base suction switch 303 moves upward to close the first suction port 310, so that the opening and closing structure of the first suction port 310 of the suction base 300 is very ingenious, and The opening and closing of the first suction port 310 are both associated with the placement of the storage box 400, which can avoid the problem that the first suction port 310 is exposed when the storage box 400 is not placed, causing particles and other sundries to enter the suction base 300 , the internal cleanliness of the suction base 300 can be maintained for a long time.

Specifically, the base suction switch 303 of the suction base 300 of the embodiment of the present invention includes: a valve body 331, a first spring 332 and a first sealing ring 333; The vertical portion (not numbered among the figures) that the horizontal portion extends downwards, the vertical portion of the valve body 331 runs through the first air suction port 310 and is provided with, the outer diameter is less than the inner diameter of the first air suction port 310 and the bottom is formed with an annular groove (in the figure unlabeled); the first spring 332 is sleeved outside the vertical portion of the valve body 331 and sandwiched between the horizontal portion of the valve body 331 and the top wall of the air extraction base 300; the first sealing ring 333 is sleeved in the annular groove The inner and outer diameters are larger than the inner diameter of the first air suction port 310 . By configuring the base suction switch 303 to include a valve body 331 , a first spring 332 and a first sealing ring 333 , the structure of the base suction switch 303 is easy to configure and the cost is low. When the storage box 400 is placed in the suction base 300, when the valve body 331 of the base suction switch 303 moves downward under the gravity of the storage box 400, the first spring 332 is compressed, and the first sealing ring 333 moves downward, the first air suction port 310 is opened, and the outer diameter of the vertical portion is smaller than the inner diameter of the first air suction port 310 so that an air suction channel is formed between the vertical portion and the first air suction port 310; when the storage box When the 400 moves out from the suction base 300, the first spring 332 recovers upwards and deforms, and the first sealing ring 333 moves upwards to block the gap between the first suction port 310 and the vertical part, thereby closing the first suction port 310. As shown in FIG. 5 , the bottom wall of the outer box body 402 of the storage box 400 in the embodiment of the present invention surrounds the suction port 420 and extends downwards to form at least one switch protrusion 421 , so that the storage box 400 is placed on the suction port. When inside the base 300 , the switch protrusion 421 collides with the horizontal portion of the valve body 331 and pushes the base suction switch 303 to move downward. By forming a switch protrusion 421 around the suction port 420 on the bottom wall of the outer box body 402, the matching structure between the base suction switch 303 and the storage box 400 can be simplified to ensure that after the storage box 400 is placed in the suction base 300, the first The suction port 310 is opened.

The air extraction base 300 of the embodiment of the present invention also includes: an air extraction box 304, which is arranged in the seat body 301 and buckled below the first air extraction port 310. A butt joint 341 is formed on the air extraction box 304, and a butt joint 341 is formed on the butt joint 341. A second suction port 340 is opened; the vacuum pump 302 is connected to the butt joint 341 through a suction pipeline (not shown in the figure). By providing the suction box 304, the connection between the vacuum pump 302 and the first suction port 310 can be realized more easily. When the suction base 300 has multiple first suction ports 310 , there are correspondingly multiple suction boxes 304 . For example, the suction base 300 has three first suction ports 310 , corresponding to three suction boxes 304 .

As shown in Figure 4, the bottom wall of the suction box 304 of the suction base 300 of the embodiment of the present invention is provided with an overpressure vent 342; a second spring 343 and a gasket 344 are also provided in the suction box 304, wherein The gasket 344 is disposed at the overpressure vent 342 . One end of the second spring 343 abuts against the inside of the top wall of the seat body 301 , and the other end abuts against the gasket 344 . By setting the overpressure vent 342 on the bottom wall of the suction box 304, the structure and components of the vacuum storage device 200 can be protected, the air pressure can be controlled to be stable, and the negative pressure encountered when the storage box 400 is pumped can be avoided. Too big a problem. Specifically, when the air pressure in the air extraction box 304 is lower than the rated air pressure, the second spring 343 will move upward together with the sealing gasket 344 under the external atmospheric pressure, and the overpressure vent 342 will open, so that the inside of the air extraction box 304 communicates with the outside air. , the air pressure inside the air extraction box 304 no longer drops and stabilizes at the rated air pressure, which avoids the problem of excessive negative air extraction pressure in the storage box 400 . Therefore, even if the vacuum storage device 200 adopts timing pumping, there is no need to worry about problems such as excessive pumping, and the overpressure leaking structure requires a small space, low cost, and high cost performance.

The cover body 500 of the storage box 400 in the embodiment of the present invention is configured to be detachably sealed and fixed with the outer box body 402, so as to open and close the storage space 410; wherein the cover body 500 is provided with a pressing inflation structure and/or an air pressure indicating structure , pressing the inflatable structure is used to allow external air to enter the storage space 410 , and the air pressure indicating structure is used to show the vacuum state in the storage space 410 .

The cover body 500 of the embodiment of the present invention includes an upper cover 501 and a lower cover 502 . The lower cover 502 is fixed to the upper cover 501 . As shown in Figure 7, the lower cover 502 is provided with a plurality of engaging protrusions 527 and a plurality of fixing posts 528, and the upper cover 501 is provided with a plurality of hooks (not shown in the figure) and a plurality of fixing columns. hole, the hook fits in the snap-in protrusion, and the fixing column fits in the fixing hole, so as to realize the fixing of the lower cover 502 and the upper cover 501. In addition, an annular groove 529 is formed around the lower part of the lower cover 502 , and a sealing ring 507 is disposed at the annular groove 529 to ensure the sealing between the cover body 500 and the outer box body 402 .

In some embodiments, the press-inflatable structure is mainly composed of an inflatable valve 503 and a press unit. The lower cover 502 is provided with an air inlet 520 passing through the upper and lower directions. The inflation valve 503 is disposed at the air inlet 520 for opening and closing the air inlet 520 . The pressing unit is disposed between the upper cover 501 and the inflation valve 503 , and is configured to press the pressing unit to keep the inflation valve 503 away from the air intake hole 520 to open the air intake hole 520 to allow outside air to enter the storage space 410 .

As shown in FIG. 6 , a first installation opening 521 is opened on the lower cover 502 . The inflation valve 503 has a mounting portion 531 and a shielding portion 532. The mounting portion 531 is inserted into the first mounting port 521 to fix the inflation valve 503 and the lower cover 502. The shielding portion 532 is configured to be close to the air inlet 520 to close the air intake. hole 520 and away from the air inlet hole 520 to open the air inlet hole 520 . As shown in Figure 7, an inflatable protrusion 523 is formed on the lower cover 502, a first installation port 521 is opened in the center of the inflatable protrusion 523, and an air inlet 520 is opened on the edge; the installation part 531 of the inflation valve 503 is inserted into the first installation port 521 , snapped and fixed with the lower surface of the lower cover 502 ; the shielding portion 532 covers the upper surface of the air inlet 520 .

The pressing unit includes a first movable part 541 and a second movable part 542 . The first movable part 541 is configured to be movable up and down in the lower cover 502, and has a pressing part 5411 and a main pushing part 5412, wherein the pressing part 5411 is set close to the upper cover 501, and the main pushing part 5412 is set at the side of the pressing part 5411 close to the inflation valve 503 side. The second movable part 542 is arranged below the main pushing part 5412 and is on one side of the inflation valve 503. The pressing unit is configured to move the main pushing part 5412 up and down by pressing the pressing part 5411 of the first movable part 541 to push the second movable part. The member 542 moves left and right to approach and push the charging valve 503 away from the air inlet 520 . As shown in FIG. 6 , the lower cover 502 is provided with a support column 525 , a rotating shaft 5413 is formed on the side of the pressing portion 5411 of the first movable member 541 away from the main pushing portion 5412 , and an arc-shaped groove is formed at the top of the support column 525 . The rotating shaft 5413 fits in the arc groove. The main pushing part 5412 is roughly rod-shaped.

The second movable part 542 has a first auxiliary pushing part 5421 and a second auxiliary pushing part 5422, wherein the first auxiliary pushing part 5421 has a slope structure, and the slope structure is below the main pushing part 5412; the second auxiliary pushing part 5422 is arranged on the second The bottom of an auxiliary pusher 5421, and the end of the second auxiliary pusher 5422 near the inflation valve 503 has a sharp head 5423, and the second movable part 542 uses the sharp head 5423 to lift the inflation valve 503 upwards to open the air inlet 520 . By setting the first movable part 541 and the second movable part 542, the user's up and down pressing action can be converted into the left and right movement of the second movable part 542, and the sharp head 5423 of the second movable part 542 is close to the shielding part 532 of the inflation valve 503 Afterwards, the corresponding area of the shielding portion 532 will be lifted upwards, thereby opening the air intake hole 520 .

The pressing unit further includes a pressing spring 543 and a pulling spring 544 . The pressing spring 543 is interposed between the pressing portion 5411 and the lower cover 502 . The traction spring 544 is arranged on the side of the second movable part 542 away from the inflation valve 503. One end of the traction spring 544 is connected with the second movable part 542, and the other end is connected with the lower cover 502 for pulling the second movable part after inflation. The member 542 is away from the inflation valve 503. As shown in FIG. 7 , the lower cover 502 is provided with a positioning column 526 , and the pressing spring 543 is sleeved on the outside of the positioning column 526 .

The pressing unit also includes a guide 545, which is arranged in the lower cover 502 and has a guide groove 5451 along the left and right directions. The second auxiliary pushing part 5422 moves left and right in the guide groove 5451, and one end of the traction spring 544 is connected to the second auxiliary pushing part. 5422, and the other end is connected with the guide 545. As shown in Figure 7, a fixed rib 5452 is formed on the end of the guide member 545 away from the inflation valve 503, a fixed rib 5424 is formed on the end of the second auxiliary pushing part 5422 away from the inflation valve 503, and one end of the traction spring 544 is connected to the fixed rib 5452. connected, and the other end is connected with the fixed edge 5424.

As shown in FIG. 5 , the air pressure indicating structure is mainly composed of an air pressure indicating column 505 and a mounting part 551 . The lower cover 502 defines a second installation opening 522 extending through the upper and lower directions. The cover body 500 of the embodiment of the present invention also includes: an air pressure indicating column 505, which is arranged at the second installation port 522. The air pressure indicating column 505 is a hollow structure with an opening at the bottom, and at least its top area is a flexible deformation structure, so that based on The deformation degree of the flexible deformation structure at the top of the air pressure indicating column 505 shows the vacuum state in the storage space 410 . Specifically, the upper cover 501 is provided with a third installation opening 510 passing through the upper and lower directions, wherein the projection of the third installation opening 510 on the horizontal plane covers the second installation opening 522, so that the top area of the air pressure indicating column 505 is exposed to the upper cover. 501 outside. The mounting part 551 has a bottom wall part 5511 and a side wall part 5512. The bottom wall part 5511 is provided with a plurality of ventilation holes 5510 along the vertical direction. The side wall part 5512 is inserted and fixed on the air pressure indicating column from the opening at the lower part of the air pressure indicating column 505. within 505. In the case of no vacuum, the flexible deformation structure of the air pressure indicating column 505 is naturally stretched out, protruding from the upper surface of the upper cover 501 as shown in FIG. 5 . When vacuuming, the flexible deformation structure of the air pressure indicating column 505 gradually shrinks and moves down, and when the upper surface of the air pressure indicating column 505 is flush with the upper surface of the upper cover 501, it indicates that the vacuuming is completed. After the storage box 400 is placed for a period of time, if the vacuum degree in the storage space 410 drops to a certain level, the flexible deformation structure of the air pressure indicating column 505 will stretch upward again, thus, based on the flexible deformation structure of the air pressure indicating column 505 The degree of deformation may show the vacuum state in the storage space 410 . As shown in FIG. 7 , the lower cover 502 may be provided with a support frame 524 for cooperating with the air pressure indicating post 505 .

The cover 500 of the embodiment of the present invention further includes: a pressing top plate 552, which is arranged at the third installation port 510, one side is integrated with an air pressure indicator column 505, and the other side is located above the pressing unit for users to press. The pressing top plate 552 and the air pressure indicating column 505 may be an integral elastic member. As shown in FIG. 7 , a sealing ring 553 is disposed between the pressing top plate 552 and the third installation opening 510 .

The cover body 500 of the embodiment of the present invention also includes at least one pair of movable buckle ears 506 , the upper part of each movable buckle ear 506 is rotatably connected with the upper cover 501 or the lower cover 502 , and the inner surface of the lower part is provided with a fixing protrusion 561 . The upper part of the outer box body 402 is provided with a fixing protrusion 423, and the fixing protrusion 423 of the outer box body 402 is engaged with the fixing protrusion 561 of the movable buckle 506 one by one to realize the fixing of the cover body 500 and the box body part. As shown in Figure 7, a rotating shaft 562 is formed on the top of the movable buckle ear 506, and accommodating grooves 511 are respectively formed on both sides of the upper cover 501, and rotating shaft holes 512 are respectively formed on both sides of the accommodating groove 511, and the rotating shaft 562 fits in the rotating shaft holes 512. Inside.

In the description of this embodiment, it should be understood that, for the vacuum storage device 200, the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate directions or positions. For the relationship, refer to the orientation or positional relationship shown in Figure 2. At the same time, this is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

So far, those skilled in the art should appreciate that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, without departing from the spirit and scope of the present invention, the disclosed embodiments of the present invention can still be used. Many other variations or modifications consistent with the principles of the invention are directly identified or derived from the content. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

A method for controlling air extraction of a vacuum storage device, the vacuum storage device includes an air extraction base and one or more storage boxes, wherein one or more placement slots are formed on the air extraction base, and each of the The placement slots are respectively formed with a first air suction port, and a vacuum pump is also arranged in the air suction base, and a storage space is defined in each of the storage boxes and an air suction port is formed, and the vacuum pump passes through the The first air suction port, the air suction port pumps out part or all of the air in the storage space; and each of the storage slots is also provided with a micro switch, wherein the method includes:

Detecting whether the micro switch changes from an untriggered state to a triggered state;

When it is detected that the micro switch changes from the non-triggered state to the triggered state, the vacuum pump is controlled to be turned on to start pumping air.
The method according to claim 1, wherein, before or after said step of controlling said vacuum pump to be turned on, said method further comprises:

Acquire the quantity of the storage boxes on the air extraction base.
The method according to claim 2, wherein, after the step of obtaining the number of the storage boxes on the air extraction base, the method further comprises:

Calculate the product of the number of storage boxes and the preset single-box pumping time threshold to obtain the target pumping time;

Judging whether the opening time of the vacuum pump is greater than or equal to the target pumping time;

When the start time of the vacuum pump is greater than or equal to the target pumping time, the vacuum pump is controlled to be turned off and the pumping is stopped.
The method according to claim 3, wherein,

When the opening time of the vacuum pump is less than the target pumping time, it is detected again whether the micro switch changes from the untriggered state to the triggered state;

If not, control the vacuum pump to continue pumping until the opening time is greater than or equal to the target pumping time;

If yes, reacquire the quantity of the storage boxes on the air extraction base.
The method according to claim 3, wherein, after said step of controlling said vacuum pump to shut down, said method further comprises:

Judging whether the storage time of the storage box is greater than or equal to the sum of the target pumping time and the preset vacuum maintenance time threshold;

If so, control the vacuum pump to restart.
The method according to claim 3, wherein, after said step of controlling said vacuum pump to shut down, said method further comprises:

Judging whether the shutdown time of the vacuum pump is greater than or equal to a preset vacuum degree maintenance time threshold;

If so, control the vacuum pump to restart.
The method according to any one of claims 2-6, wherein the step of acquiring the quantity of the storage boxes on the air suction base comprises:

Acquiring the quantity of the microswitches in the triggered state to obtain the quantity of the storage boxes on the suction base.
A vacuum storage device, comprising:

The air extraction base;

said storage box; and

The controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, the air extraction control method according to any one of claims 1-7 is realized.
The vacuum storage device of claim 8, wherein:

The top wall of the placement slot is provided with the micro switch, and when the storage box is placed in the placement slot, it touches the micro switch, so that the micro switch changes from the untriggered state to the triggered state. state.
A refrigerator with the vacuum storage device according to any one of claims 8-9.