REFRIGERATOR
The present disclosure provides a refrigerator including a vacuum sealing device disposed at an outer side of a door. The vacuum sealing device includes a lower support, an upper support and a vacuumization assembly. The upper support moves close to or away from the lower support under the drive of a driving device; after the upper support moves at a first speed until a sealing ring of the upper support is in contact with a sealing ring of the lower support, the upper support moves at a second speed toward the lower support until the sealing ring has a set deformation amount, and a first opening cavity and a second opening cavity are butt-joined to sealingly form a vacuumization region; the first speed is greater than the second speed; the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region.
This application is a continuation of International Patent Application No. PCT/CN2019/096532 with a filing date of Jun. 17, 2020, designating the United States, now pending, and further claims priority to Chinese Patent Application No. 201910756799.X, titled as REFRIGERATOR, filed on Aug. 16, 2019, and Chinese Patent Application No. 201910756811.7 titled as REFRIGERATOR, filed on Aug. 16, 2019, the entire contents of which are incorporated herein by reference.
TECHNICAL FIELDThe present disclosure relates to the field of household appliances and in particular to a refrigerator.
BACKGROUNDIn recent years, people have an increasing requirement for food material preservation along with increasing awareness of health. Refrigerator is the commonest household appliance for preservation of food materials. Therefore, the food material preservation storage becomes a technical need to be met in the field of refrigerators.
At present, various manufacturers launch different preservation technologies for food material preservation storage. For example, with vacuum preservation technology, the condition of food spoilage under vacuum takes change. Firstly, in a vacuum environment, it is difficult for microorganisms and various promoting enzymes to survive and the microorganisms will take a long time to grow. Secondly, under vacuum, oxygen in a container will decrease significantly, various chemical reactions cannot be completed, and foods will not be oxidized, so that the foods can be preserved for long.
SUMMARYAccording to a first aspect, the present disclosure provides a refrigerator including a vacuum sealing device disposed at an outer side of a door. The vacuum sealing device includes:
a lower support with its upper side provided with a first opening cavity and a sealing ring surrounding the first opening cavity;
an upper support with its lower side provided with a second opening cavity corresponding to the first opening cavity and a sealing ring surrounding the second opening cavity;
a driving device including a motor and a transmission mechanism, wherein the upper support moves close to or away from the lower support under the drive of the driving device, the transmission mechanism is used to convert a rotational movement of the motor into a rectilinear movement, an output end of the transmission mechanism is connected with the upper support, the upper support moves the sealing ring of the upper support at a first speed to contact with the sealing ring of the lower support, and then moves toward the lower support at a second speed until the sealing ring has a set deformation amount, the first opening cavity and the second opening cavity are butt-jointed to sealingly form a vacuumization region, and the first speed is greater than the second speed;
a vacuumization assembly, wherein the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region.
According to a second aspect, the present disclosure provides a refrigerator including a storage compartment and a door opening or closing the storage compartment. The door is provided with a vacuum sealing device including an upper support, a lower support and a vacuumization assembly. Opening cavities are disposed on mutually-opposed surfaces of the upper support and/or the lower support; sealing rings are disposed around the opening cavities of the upper support and/or the lower support; the upper support may move close to or away from the lower support under the drive of a driving device; when the upper support moves close to the lower support until the upper support and the lower support are butt-joined, the opening cavities sealingly form a vacuumization region through the sealing rings; the vacuumization assembly includes a vacuum pump in communication with the vacuumization region through a pipe; a pressure detection device and a pressure relief device are further disposed on the pipe. The pressure detection device, the pressure relief device and the vacuum pump are in electrical connection with a controller respectively. After the vacuum pump is started, the pressure detection device detects the pressure of the vacuumization region. When determining that abnormal vacuumization is present in the vacuumization region according to a detection signal of the pressure detection device, the controller may control the vacuum pump to stop and start the pressure relief device to perform depressurization for the vacuumization region.
In order to describe the technical solution of the present disclosure more clearly, the accompanying drawings involved in the examples will be briefly introduced. Apparently, those skilled the art may also obtain other drawings according to these drawings without paying creative work. Further, the accompanying drawings described below can be deemed as illustrative rather than limiting of actual sizes of the products involved in the examples of the present disclosure.
The technical solution of the present disclosure will be fully and clearly described below in combination with the accompanying drawings of the examples of the present disclosure. Apparently, the described examples are merely some of the present disclosure rather than all examples. All other examples obtained by those skilled in the art based on these examples of the present disclosure without paying creative work shall fall with the scope of protection of the present disclosure.
In the descriptions of the present disclosure, the terms “one example” “some examples”, “illustrative examples” “examples” “specific examples” or “some embodiments” are all intended to indicate a specific feature, structure, material, or property relating to these examples or embodiments is included in at least one example or embodiment of the present disclosure. The illustrative expressions of the above terms do not necessarily refer to the same example or embodiment. In addition, the specific feature, structure, material or property may be included in any one or more examples or embodiments in a proper manner.
In the description of the present disclosure, it is to be understood that orientations or positional relationships indicated by terms such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, are based on orientations or positional relationships shown in the drawings and are used only for convenience and simplification of descriptions of the present disclosure, rather than indicate or imply that the indicated apparatus or element shall have a specific orientation and be configured or operated in a specific orientation. Thus, the terms shall not be understood as limiting of the present disclosure. In addition, the terms “first”, “second” and “third” are used only for descriptions and shall not be understood as indicating or implying relative importance.
In the descriptions of the present disclosure, it is noted that the terms “mounting” “connection” and “coupling” shall be understood in a broad sense, for example, it may be a fixed connection, or a detachable connection, or integrated connection; or direct connection or an indirect connection through an intermediate medium, or may be internal communication between two elements. Those skilled in the art may understand the specific meanings of the above terms in the present disclosure according to the specific situations.
In addition, the technical features involved in the different examples described below may be combined with each other as long as they do not constitute conflict.
The storage compartment 100 includes a box with opening. The storage compartment 100 is vertically divided into a lower freezing compartment 100A and an upper refrigerating compartment 100B. Each of the partitioned spaces may have an independent storage space. Specifically, the freezing compartment 100A is at the lower part of the storage compartment 100 and may be selectively covered by a drawer-type freezing compartment door A. The space above the freezing compartment 100A is divided into a left side and a right side to form the refrigerating compartment 100B respectively. The refrigerating compartment 100B may be selectively closed or opened by a refrigerating door 200B pivotably mounted on the refrigerating compartment 100B.
In some examples, as shown in
In some examples, as shown in
In some examples, the vacuum sealing device 300 further includes a vacuumization assembly 330. As shown in
In another example, as shown in
One connection hole of the vacuumization region 301 connecting with the pipe 335 may be disposed. Of course, in order to prevent vacuumization failure caused by plugging of the connection hole by the foreign matters in the vacuumization region 301 in a case of single connection hole, two or more connection holes may be disposed to connect with the pipe 335 respectively. The pipes 335 are parallel-disposed to connect with a main pipe through a three-way or multi-way connector. The pressure sensor and the electronic pressure relief valve are disposed on the main pipe.
As shown in
More specifically, as shown in
In the above vacuum sealing device, the driving device 340 may be an electric driving device or an air pressure driving device. Because of large occupation space of the air pressure driving device, the electric driving device is adopted as the driving device 340 in this example. Specifically, as shown in
In some examples, as shown in
As shown in
During a vacuumization stage, a sealed vacuumization region 301 is formed between the lower support 310 and the upper support 320, and the upper support 320 moves downward under the action of atmospheric pressure due to decrease of air pressure. At this time, due to existence of the elongated pin hole, the output rack 345 keeps stationary when the upper support 320 moves downward, thereby providing protection for the entire driving device 340.
In order to accurately control the movement of the upper support 320 and further determine whether the upper support 320 moves to be in place, the vacuumization region 301 is enabled to form a sealed space. In an example, the motor 341 is a stepping motor 341 and whether the upper support 320 moves to be in place can be determined by detecting the rotational stroke of the stepping motor 341. In another example, a microswitch is disposed at the lower support 310 or the upper support 320. After the upper support 320 moves to be in place and then triggers the microswitch, the controller controls the driving device 340 to be stopped and locked at a current position according to a feedback signal of the microswitch. One driving device 340 may be disposed. The output gear is located in a middle region of the upper support 320. In this case, it causes an edge area of the upper support 320 and the lower support 310 to be loosely attached, resulting in air leakage of the vacuumization region 301. Thus, in order to provide sealing of the vacuumization region 301, the driving devices 340 are symmetrically disposed at both sides of the upper support 320. Correspondingly, one connection plate 347 is disposed, two guide grooves 3471 are disposed on the connection plate 347, and two output racks 345 protrude into the guide grooves 3471 respectively.
Specifically, as shown in
When the user performs plastic sealing for a storage bag, especially powder-like foods such as flour or liquid or the like by use of the vacuum sealing device 300, the powder or liquid may enter the vacuumization region 301 during vacuumization and finally accumulate in the first opening cavity 311 of the lower support 310. Therefore, in order to help the user to clean the food residues in the lower support 310, the lower support 310 is detachably mounted relative to the door 200.
The lower support 310 may be mounted on the door 200 in several manners. In this example, as shown in
In an example, as shown in
In order to further ensure the insulation performance of the door 200 and avoid cold leakage occurring from a clearance between the mounting hole 201 and the small insulation door 250, as shown in
Specifically, in order to guarantee the small insulation door 250 is reliably fixed on the door 200, a locking device 400 disposed between the small insulation door 250 and the door inner liner 220. The locking device 400 is used to lock or unlock the small insulation door 250 on or from the door 200.
As shown in
Specifically, in order to improve the reliability of the locking device 400, two locking grooves 221 and two locking hooks are disposed respectively. The locking grooves 221 are located at upper and lower sides of the mounting hole 201. As shown in
As shown in
In an initial state, the upper locking hook 420 and the lower locking hook 410 are in the first position under the elastic force of the reset spring 430 to realize the locking of the small insulation door 250 and the door inner liner 220. When the user moves the lower locking hook 410 by hand, the lower locking hook 410 rotates around the hinging portion 412, the hooking portion 414 moves downward to separate from the locking groove 221 at the lower side, and at the same time, the connection portion push up the upper locking hook 420 to move upward so that the upper locking hook 420 separates from the locking groove 221 at the upper side. In this way, the upper locking hook 420 and the lower locking hook 410 are in the second position to realize the unlocking of the small insulation door 250 and the door inner liner 220.
In order to ensure the external aesthetics of the door 200 of refrigerator, as shown in
The inner side of the bar table door 260 further includes an operation panel 270 covered on the outer side of the mounting cavity. An inserting hole 271 is formed on the operation panel 270, and a lower surface of the inserting hole 271 is flushed with an upper surface of the first opening cavity 311. In this case, the vacuum sealing device 300 can be entirely hidden at the rear side of the operation panel 270. When performing vacuum plastic sealing, the user may directly insert the opening of the storage bag from the inserting hole 271 of the operation panel 270, and directly extend it to the upper surface of the first opening cavity 311. When the upper support 320 moves downward, the opening of the storage bag can be placed in the vacuumization region 301. Specifically, the operation panel 270 is detachably connected to the door housing 210. A display control device 272 is further disposed on the operation panel 270. The display control device 272 includes an indicating device for displaying a working state of the vacuum sealing device 300 and a control button for controlling the vacuum sealing device 300 to stop or start. The user may determine whether to pull out the storage bag according to the working state of the vacuum sealing device 300 indicated by the display control device 272. The display control device 272 includes “vacuumization plastic sealing” button, “opening sealing” button, “manual vacuumization” button, and “stop” button. Vacuumization and plastic sealing process can be realized by depressing the button “vacuumization plastic sealing”, sealing operation can be realized for individual storage bag by depressing the button “opening sealing”, and manual vacuumization treatment can be realized by depressing the button “manual vacuumization”. For example, the “manual vaccumization” button may be set to perform automatic vacuumization for several seconds for one depress and then continue vacuumization for a second depress and repeat like this until the user thinks the vacuumization is completed. Alternatively, the user keeps depressing the “manual vacuumization” button to perform continuous vacuumization until the user stops depressing the “manual vacuumization” button. In this way, the user realizes the manual vacuumization. By depressing the “stop” button, the flow of air release and upper support ascent is performed. When the user determines that the vacuum sealing device works abnormally during the vacuumization process, the user may terminate the flow of the vacuumization in advance by depressing “stop” button.
The above vacuum sealing device performs vacuumization sealing in the following procedure including upper support descent, vacuumization plastic sealing, air release, and upper support ascent.
As shown in
At step 101, the upper support 320 performs first-stage descent at a first speed.
At step 102, whether the upper support 320 descends a first preset distance is determined. If yes, step 103 is performed, otherwise, step 101 is performed.
The upper support 320 descends the first preset distance at the first speed until the sealing ring of the upper support 320 is in contact with the sealing ring of the lower support 310; the upper support 320 quickly descends toward the lower support 310 at the higher first speed so that the vacuumization sealing process will take a shorter time.
At step 103, the upper support 320 performs second-stage descent at a second speed.
At step 104, whether the upper support 320 descends a second preset distance is determined. If yes, step 105 is performed, and otherwise, the step 103 is performed. The second speed is lower than the first speed.
When the upper support 320 descends the second preset distance, the sealing rings of the upper support 320 and the lower support 310 deform to a preset value, and the preset value is big enough to seal the vacuumization region; the upper support 320 moves toward the lower support 310 at the second speed under the drive of the driving device, which is a slow descending stage where the driving device increases its acting force with its speed decreased to ensure the sealing of the upper support 320 and the lower support 310.
When it is determined that the upper support 320 descends the first preset distance, the flow of vacuumization plastic sealing shown in
At step 201, the vacuum pump is started.
At step 202, whether the pressure value of the vacuumization region 301 reaches a first pressure value is determined. If yes, step 207 is performed, and otherwise, step 203 is performed.
The pressure detection device may determine whether the pressure value of the vacuumization region 301 reaches the first pressure value. When it is determined the first pressure value is reached, the vacuumization of the vacuum pump 331 is stopped.
At step 203, whether a vacuumization time reaches a preset vacuumization time is determined. If yes, step 207 is performed, and otherwise step 204 is performed.
Whether the vacuumization time reaches the preset vacuumization time is determined. When the preset vacuumization time is reached, the vacuumization of the vacuum pump 331 may also be stopped.
At step 204, whether the pressure value of the vacuumization region 301 reaches a second pressure value is determined, where the second pressure value is smaller than the first pressure value; if yes, step 205 is performed and otherwise step 202 is performed.
At step 205, whether the change of the pressure value of the vacuumization region 301 is smaller than a third pressure value after a preset time is determined, where the third pressure value is smaller than the second pressure value; if yes, step 206 is performed and otherwise step 202 is performed.
When the pressure detection device detects that the pressure value of the vacuumization region 301 reaches the second pressure value and the change of the pressure value is smaller than the third pressure value after a preset time, it is determined the vacuumization process is abnormal, for example, the problems such as poor sealing of pressing strip, entry of foreign matters, creased sealing opening, broken bag occur. In this case, it is necessary to end the vacuumization in advance.
At step 206, vacuumization is stopped, and the vaccumization region 301 is depressurized and opened.
After it is determined that the vacuumization is abnormal, the vacuumization of the vacuum pump 331 may be stopped, and the vacuumization region 301 is depressurized by the pressure relief device.
At step 207, the vacuumization is stopped to heat the sealing opening.
After the vacuumization step is completed, the vacuum pump is stopped and the heating wire is started to perform hot melting plastic sealing for the storage bag.
At step 208, after the time for heating the sealing opening reaches a heating time, air release stage is started after a delay of a first time.
After the sealing opening heating device performs heating plastic sealing for the storage bag for the heating time, the air release stage may be started after a delay of the first time. The heating time and the first time may be set according to experiences.
As shown in
At step 301, an air release device performs air release. Pipe air release is performed by opening an air release valve.
At step 302, the air release device determines whether the air release exceeds an air release time. If yes, step 303 is performed and otherwise step 301 is performed. The air release time may be set according to experiences.
At step 303, the driving device controls the upper support 302 to ascend.
The driving device may drive the upper support 320 to move up at a third speed to separate from the lower support 310 so as to open the vacuumization region 301.
At step 304, whether the upper support 301 ascends a set step number is determined. If yes, the ascending is ended and otherwise step 301 is performed.
After the upper support 320 ascends the preset step number, the next vacuumization sealing operation may be prepared. The preset step number may be a step number for the upper support 320 to arrive at the vacuumization region 301.
It is noted that the first speed is greater than the second speed, the third speed is greater than the second speed, the first preset distance, the second preset distance, the first speed, the second speed and the third speed all may be set according to experiences, and the first preset distance and the second preset distance can be realized by controlling a preset advancing step number of the electric motor.
In some examples, a first limiting portion extending upward is formed on an end of the extension arm 2511, a second limiting portion mated with the first limiting portion is formed on a lower side of the lower support 310, and the first limiting portion and the second limiting portion are mated to position the lower support 310 on the extension arm 2511. More specifically, the first limiting portion is a limiting plate and the limiting portion is a baffle plate formed on the bottom of the lower support 310 and extending downwardly. The baffle plate is inserted into the inner side of the limiting plate to mount the lower support 310 to the extension arm 2511, thus avoiding the problem of poor sealing of the vacuumization region caused by horizontal movement of the lower support 310.
In order to further guarantee the heat insulation of the door 200 and avoid cold leakage occurring from the clearance between the mounting hole 201 and the small insulation door 250, the small door gasket 253 is disposed between the small insulation door 250 and the door inner liner 220. Specifically, the support arm 2512 is disposed at the position of the first housing 251 mated with the door inner liner 220, and the size of the support arm 2512 is greater than that of the mounting hole 201. A mounting groove surrounding the mounting hole 201 is disposed on the support arm 2512 and the small door gasket 253 is mounted in the mounting groove.
Specifically, in order to guarantee the small insulation door 250 can be reliably fixed on the door 200, the locking device 400 is disposed between the small insulation door 250 and the door inner liner 220.
Specifically, in order to improve the aesthetics of the small door, a mounting recess is formed on the bottom of the small door and the locking hook is mounted into the mounting recess.
In some examples of the present disclosure, as shown in
In some examples, the lower support 310 is detachably connected to the door 200 by push ejection. As shown in
In some examples of the present disclosure, as shown in
In some examples, the lower support 310 is detachably connected to the door 200 by snap fitting. A first fitting portion 391 and a second fitting portion 392 mutually mated are formed respectively on the lower support 310 and the door 200. The first fitting portion 391 is formed on the lower surface of the lower support 310 and specifically is a bending hook. The second fitting portion 392 is fixedly connected to a front side surface of the door 200. The lower support 310 moves close to the door 200 until the first fitting portion 391 and the second fitting portion 392 are mated, realizing the mounting of the lower support 310. During dismounting, the lower support 310 is pulled outwardly, and the first fitting portion 391 and the second fitting portion 392 are separated due to elastic deformation. Thus, the user can perform separate cleaning for the lower support 310, facilitating user operation.
Obviously, the above examples are only used to clearly describe the present disclosure rather than limit the present disclosure. Those skilled in the prior art may make different types of other changes or modifications based on the above descriptions. All examples are not necessarily or cannot be exhausted herein. All apparent changes or modifications derived herein still fall within the scope of protection of the present disclosure.
Claims
1. A refrigerator, comprising a vacuum sealing device disposed at an outer side of a door, wherein the vacuum sealing device comprises:
- a lower support, wherein an upper side of the lower support are provided with a first opening cavity and a sealing ring surrounding the first opening cavity;
- an upper support, wherein a lower side of the upper support is provided with a second opening cavity and a sealing ring surrounding the second opening cavity;
- a driving device including a motor and a transmission mechanism, wherein the upper support moves close to or away from the lower support under the drive of the driving device, the upper support moves at a second speed until the sealing ring has a preset deformation amount after the upper support moves at a first speed until the sealing ring of the upper support is in contact with the sealing ring of the lower support, the first opening cavity and the second opening cavity are butt-joined to sealingly form a vacuumization region, and the first speed is greater than the second speed;
- a vacuumization assembly, wherein the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region.
2. The refrigerator according to claim 1, wherein the vacuum sealing device further comprises a sealing zone comprising a heating wire at a lower side of the upper support and an insulation cushion at an upper side of the lower support; when the pressure of the vacuumization region satisfies a preset condition, the heating wire performs hot melting plastic sealing for a storage bag inserted into the sealing zone.
3. The refrigerator according to claim 1, wherein the vacuumization assembly comprises a vacuum pump and a pressure detection device for detecting a pressure of the vacuumization region; after the upper support and the lower support are butt-joined, the vacuum pump is started; when a pressure value detected by the pressure detection device is smaller than a first preset value, the vacuum pump is shut down.
4. The refrigerator according to claim 3, wherein the vacuumization assembly further comprises a pressure relief device in communication with the vacuumization region through a pipe; after the heating wire works for a first preset time, the pressure relief device is used to perform depressurization for the vacuumization region, and after the pressure relief device completes depressurizing for a second preset time, the upper support moves upward at a third speed under the drive of the driving device until the upper support restores to an initial position; wherein the third speed is greater than the second speed.
5. The refrigerator according to claim 1, wherein the driving device comprises a motor and a transmission mechanism, the transmission mechanism is used to convert a rotational movement of the motor into a rectilinear movement, and an output end of the transmission mechanism is connected with the upper support; the transmission mechanism comprises a gear and rack transmission mechanism, a pin hole is disposed at a lower side of an output rack of the gear and rack transmission mechanism, the upper support and the output rack are connected by a pin shaft inserted through the pin hole, and the pin hole is an elongated hole extending longitudinally.
6. The refrigerator according to claim 5, wherein the gear and rack transmission mechanism comprises a first gear fixedly connected to an output shaft of the motor, a second gear meshed with the first gear, a third gear fixedly connected to the second gear, and the output rack meshed with the third gear.
7. The refrigerator according to claim 6, wherein a connection plate is disposed between the upper support and the driving device, the connection plate is thread-connected with the upper support, a guide groove is formed on the connection plate, a lower end of the output rack is inserted into the guide groove, and the pin shaft is inserted through the pin holes of the guide groove and the output rack.
8. The refrigerator according to claim 7, wherein when the pin shaft is at the lowest end of the pin hole, there is a clearance between a lower end surface of the output rack and a groove bottom of the guide groove, and an elastomer is disposed in the clearance.
9. The refrigerator according to claim 8, wherein two driving devices are symmetrically disposed at both sides of the upper support, one connection plate is disposed, and two guide grooves are disposed on the connection plate; and two output racks are inserted into the guide grooves respectively.
10. The refrigerator according to claim 1, wherein the driving device and the vacuumization assembly are mounted on one mounting base, a mounting cavity recessed inwardly is disposed on a door housing, and the mounting base and the upper support are mounted into the mounting cavity.
11. A refrigerator, comprising a storage compartment and a door opening or closing the storage compartment, wherein a vacuum sealing device is disposed on the door and comprises:
- an upper support and a lower support; wherein opening cavities are disposed on mutually-opposed surfaces of the upper support and/or the lower support; sealing rings surrounding the opening cavities of the upper support and/or the lower support are disposed; the upper support moves close to or away from the lower support under the drive of a driving device; when the upper support moves close to the lower support until the upper support and the lower support are butt-joined, the opening cavities sealingly form a vacuumization region by sealing rings;
- a vacuumization assembly, wherein the vacuumization assembly comprises a vacuum pump in communication with the vacuumization region through a pipe; a pressure detection device and a pressure relief device are further disposed on the pipe, the pressure detection device, the pressure relief device and the vacuum pump are in electrical connection with a controller respectively, the pressure detection device detects a pressure of the vacuumization region after the vacuum pump is started, and when the controller determines the vacuumization region is abnormal according to a detection signal of the pressure detection device, the controller controls the vacuum pump to stop and starts the pressure relief device to perform depressurization for the vacuumization region.
12. The refrigerator according to claim 11, wherein the controller is configured to determine that the vacuumization is abnormal when a pressure value of the vacuumization region reaches a first pressure value and the change of the pressure value is smaller than a second pressure value within a preset time, wherein the first pressure value is greater than the second pressure value.
13. The refrigerator according to claim 12, wherein the controller is configured to control the vacuum pump to stop when it is determined that the pressure value of the vacuumization region reaches a third pressure value or a vacuumization time reaches a preset vacuumization time, wherein the third pressure value is greater than the first pressure value.
14. The refrigerator according to claim 11, wherein the lower support is detachably connected to the door and the vacuumization region is in communication with the upper support through a pipe.
15. The refrigerator according to claim 11, wherein the vacuum sealing device further comprises a sealing zone comprising a heating wire at a lower side of the upper support and an insulation cushion at an upper side of the lower support; when vacuumization is completed in the vacuumization region, the heating wire is used to perform hot melting plastic sealing for a storage bag inserted into the sealing zone.
16. The refrigerator according to claim 11, wherein the driving device comprises a motor and a transmission mechanism used to convert a rotational movement of the motor into a rectilinear movement, and an output end of the transmission mechanism is connected with the upper support.
17. The refrigerator according to claim 16, wherein after the upper support moves at a first speed under the drive of the driving device until the sealing ring of the upper support is in contact with the sealing ring of the lower support, the upper support moves toward the lower support at a second speed until the sealing ring has a preset deformation amount, wherein the first speed is greater than the second speed.
18. The refrigerator according to claim 17, wherein after the pressure relief device works for a set time, the upper support moves upward at a third speed under the drive of the driving device until the upper support restores to an initial position, wherein the third speed is greater than the second speed.
19. The refrigerator according to claim 11, wherein the driving device and the vacuumization assembly are mounted in one mounting base, a mounting cavity recessed inwardly is formed on a door housing, and the mounting base and the upper support are mounted into the mounting cavity.
20. The refrigerator according to claim 19, wherein three cavities are disposed at a side of the mounting base, comprising a vacuum pump mounting cavity at a middle position, and driving device mounting cavities at left and right sides; the side of the mounting base having the cavities faces the door housing and fixed on the door housing through a screw.
Type: Application
Filed: Feb 22, 2021
Publication Date: Jun 10, 2021
Inventors: Meiyan WANG (QINGDAO), Junwang YAN (QINGDAO), Yongyi JIN (QINGDAO), Jiangao ZHU (QINGDAO), Guanghua LUO (QINGDAO), Jingbo HAN (QINGDAO), Fuzhen LIU (QINGDAO), Shanfang ZHANG (QINGDAO)
Application Number: 17/181,449