CN113915816A

CN113915816A - Refrigerator and vacuum packaging method thereof

Info

Publication number: CN113915816A
Application number: CN202110003640.8A
Authority: CN
Inventors: 王美艳; 刘铁伟; 张建; 朱建高; 刘恒友
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2022-01-11
Anticipated expiration: 2041-01-04
Also published as: CN113915816B

Abstract

The invention provides a refrigerator which comprises a refrigerator body, a refrigerator door, a display and control unit and a vacuum packaging device, wherein the display and control unit and the vacuum packaging device are arranged on the refrigerator door; the vacuum packaging device comprises an upper support which can move up and down and is provided with a first open cavity, a lower support which is detachably arranged on the box door and is provided with a second open cavity, and an air exhaust device; when the upper support moves to be in butt joint with the lower support, the first open cavity and the second open cavity jointly define a vacuum-pumping area communicated with the air-pumping device; the box door is provided with a non-self-locking switch, when the lower support is installed in place, the non-self-locking switch is turned on, and the air exhaust device works under the control of the display control unit; when the lower support is not installed in place, the self-locking switch is not turned off, and the air exhaust device does not work; on one hand, the lower support can be detached to clean the lower support in time, so that the cleanness and tidiness of the lower support are ensured; on the other hand, the condition that whether the lower support is installed in place or not can be known, so that the vacuum packaging function is started on the premise that the lower support is installed in place, and the vacuum packaging function is prevented from being invalid.

Description

Refrigerator and vacuum packaging method thereof

Technical Field

The invention belongs to the technical field of household refrigerators, and particularly relates to a refrigerator and a vacuum packaging method thereof.

Background

At present, the improvement of the quality requirement of fresh food by consumers also puts forward a new requirement on the configuration of a refrigerator in order to meet the requirements of the consumers, so that the fresh food stored in the refrigerator can be expected to have a longer storage period, thereby ensuring the freshness of the food material and preventing the loss of nutrient components.

A vacuum packaging device is arranged on a refrigerator in the prior art to store food in vacuum. When a user packs food by using the vacuum packaging device, for food with liquid such as water or soup, part of the liquid inevitably enters the lower support of the vacuum packaging device in the vacuumizing process, and the containing cavity of the lower support belt can retain the liquid. If the liquid of the food is not removed in time, the food will go bad or go moldy, so that the vacuum packaging device is not sanitary, and the user experience is reduced.

The invention is provided in view of the above.

Disclosure of Invention

The invention provides a refrigerator aiming at the technical problems.

In order to achieve the purpose, the invention adopts the technical scheme that:

a refrigerator, comprising:

a cabinet defining a storage compartment for storing food;

the box door is arranged on the box body so as to open or close the storage compartment; a non-self-locking switch is arranged on the box door;

the display control unit is arranged on the box door;

the vacuum packaging device is arranged on the box door; it includes:

the upper support is arranged on the box door in a vertically movable manner; the lower surface of the upper support is provided with a first open cavity;

the lower support is detachably arranged on the box door; the upper surface of the lower support is provided with a second open cavity; when the upper support moves downwards to be in butt joint with the lower support, the first open cavity and the second open cavity define a vacuumizing area together;

the air exhaust device is communicated with the vacuum-pumping area;

when the lower support is installed in place, the lower support triggers the non-self-locking switch, the non-self-locking switch is turned on and sends a signal to the display control unit, and the air exhaust device works under the control of the display control unit;

when the lower support is not installed in place, the lower support is separated from the non-self-locking switch, the non-self-locking switch is closed, and the air exhaust device does not work.

Preferably, the door includes a front panel having an opening formed thereon, an inner case having a mounting opening formed thereon; the front panel is matched with the inner shell to define an accommodating cavity;

the holding intracavity is equipped with the fixing base, the fixing base includes:

the fixing plate is fixed on the front panel and corresponds to the opening on the front panel; an accommodating cavity which is sunken towards one side of the inner shell is formed in the fixing plate, and a communication opening is formed in the area below the accommodating cavity;

one end of the mounting channel is communicated with the communication port, and the other end of the mounting channel is communicated with the mounting port on the inner shell;

the upper support is fixed in the containing cavity in a vertically movable mode, and the lower support is installed in the containing cavity through the installation channel.

Preferably, the non-self-locking switch is arranged at one end of the accommodating cavity close to the front panel;

the lower support is provided with a touch part at the end part close to the front panel; when the lower support is installed in place, the touch part on the lower support triggers the non-self-locking switch, and the non-self-locking switch is turned on.

Preferably, a supporting plate is arranged in the accommodating cavity along the lower edge of the communication port, and the lower support is mounted on the supporting plate through the mounting channel;

a notch is arranged on the edge of the supporting plate close to the front panel; the non-self-locking switch comprises a trigger part, and the trigger part penetrates through the notch and extends upwards into the accommodating cavity;

the lower end of the lower support is provided with the touch part, and when the lower support is installed in place, the touch part on the lower support triggers the triggering part without the self-locking switch, and the self-locking switch is not turned on.

Preferably, a heat-insulating door is arranged at one end, close to the inner shell, of the lower support, and when the lower support is installed in place, the heat-insulating door blocks the installation opening;

the non-self-locking switch is arranged at one end, close to the inner shell, of the box door and comprises a triggering part, and the triggering part penetrates through the inner shell; when the lower support is installed in place, the heat-insulating door triggers the triggering part of the non-self-locking switch, and the non-self-locking switch is opened.

Preferably, the non-self-locking switch is mounted on the fixed seat.

Preferably, the lower support comprises a first housing; a first accommodating cavity with an opening is formed in the first shell;

a connecting plate is formed at the opening end of the first shell, a second shell is mounted on the connecting plate, a second accommodating cavity with an opening is formed in the second shell, and the opening end of the second shell is matched with the connecting plate;

the first holding cavity and the second holding cavity are internally provided with heat insulation pieces, and the second shell, the heat insulation pieces in the second shell and the connecting plate are matched to form a heat insulation door.

Preferably, the non-self-locking switch is a microswitch, a cylindrical switch or a sector switch.

Preferably, one side of the vacuumizing area, which is close to the front panel, is provided with a packaging area for performing plastic packaging treatment on the storage bag after vacuumizing is finished, and the packaging area is internally provided with a heat insulation pad and a heating device which are oppositely arranged.

A vacuum packing method of the refrigerator as described above, the vacuum packing method comprising the steps of: starting the vacuum packaging device, and judging whether the lower support is installed in place;

when the lower support is installed in place, the air exhaust device operates to carry out vacuum packaging;

when the lower support is not installed in place, the air exhaust device does not work.

Compared with the prior art, the invention has the advantages and positive effects that:

the invention provides a refrigerator, which comprises a box body for limiting a storage compartment, a box door for opening or closing the storage compartment, a display control unit arranged on the box door and a vacuum packaging device, wherein the box door is provided with a plurality of storage compartments; the vacuum packaging device comprises an upper support which can move up and down and is provided with a first open cavity on the upper surface, a lower support which is detachably arranged on the box door and is provided with a second open cavity on the upper surface, and an air exhaust device; when the upper support moves to be in butt joint with the lower support, the first open cavity and the second open cavity jointly define a vacuum-pumping area communicated with the air-pumping device; the box door is provided with a non-self-locking switch, when the lower support is installed in place, the lower support triggers the non-self-locking switch, the non-self-locking switch is turned on and sends a signal to the display and control unit, and the air exhaust device works under the control of the display and control unit; when the lower support is not installed in place, the lower support is separated from the non-self-locking switch, the non-self-locking switch is closed, and the air exhaust device does not work; on one hand, the lower support can be detached to clean the retention in the lower support in time, so that the lower support is kept clean and tidy, and the vacuum packaging is ensured to be healthy and sanitary; on the other hand, the condition that whether the lower support is installed in place or not can be known, so that the vacuum packaging function is started on the premise that the lower support is installed in place, and the vacuum packaging function is prevented from being invalid due to the fact that the lower support is not installed in place.

Drawings

FIG. 1 is a schematic view of a portion of a door of a refrigerator according to the present invention;

FIG. 2 is a sectional view of a door of a refrigerator according to the present invention;

FIG. 3 is an exploded view of the door of the refrigerator according to the present invention;

FIG. 4 is an exploded view of another perspective of the door of the refrigerator according to the present invention;

FIG. 5 is an exploded view of the inner case, the mounting seat, the non-latching switch and the lower support of the door of the refrigerator according to the present invention;

FIG. 6 is a schematic view of an assembly structure of a fixing base, an upper bracket and a self-locking switch according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of an embodiment of a lower bracket of a refrigerator according to the present invention when it is mounted in place;

FIG. 8 is a cross-sectional view of an embodiment of a lower supporter of a refrigerator according to the present invention when it is not mounted in place;

FIG. 9 is a schematic view of the overall structure of the lower support and the thermal insulating door of the refrigerator according to the present invention;

FIG. 10 is a schematic view of another perspective overall structure of a lower support and a thermal insulating door of the refrigerator according to the present invention;

FIG. 11 is an exploded view of the lower support and the heat-retaining door of the refrigerator according to the present invention;

FIG. 12 is an exploded view of the lower bracket and the thermal insulating door of the refrigerator according to another aspect of the present invention;

FIG. 13 is a schematic view of the overall structure of the mounting seat and the display control unit of the refrigerator according to the present invention;

FIG. 14 is a schematic view of the overall structure of the mounting seat, the air extractor and the driving device of the refrigerator according to the present invention;

FIG. 15 is a schematic view of an assembly structure of a fixing base and a self-locking switch of another embodiment of the refrigerator according to the present invention;

FIG. 16 is a sectional view of another embodiment of a lower supporter of a refrigerator according to the present invention when it is mounted in place;

FIG. 17 is a sectional view showing another embodiment of a lower supporter for a refrigerator according to the present invention when it is not mounted in place;

fig. 18 is a flowchart of a vacuum packing method of a refrigerator according to the present invention.

In the above figures: a door 10; a front panel 11; an inner shell 12; an accommodating chamber 13; an opening 110; a mounting opening 120; a mounting seat 14; a mount plate 141; a seal 142; a fixed seat 2; a fixed plate 21; a housing chamber 22; a mounting channel 23; a communication port 24; a support plate 25; a notch 26; an upper support 3; a first open cavity 31; a heating device 32; a communication hole 33; a lower support 4; a second open cavity 41; an insulating mat 42; a first housing 43; the first accommodation chamber 431; a connecting plate 44; a second housing 45; the second accommodation chamber 451; a touch portion 46; a heat-insulating door 7; a handle 8; a drive device 15; a mounting base 16; a display control unit 17; an operation panel 18; a socket 19; an air extraction device 5; an exhaust tube 51; a vacuum pump 52; a self-locking switch 6 is not arranged; a trigger portion 60.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the scope of the present invention as claimed is not limited to the scope described in the specific embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 17, a refrigerator includes a heat-insulated cabinet; the cabinet defines a plurality of low temperature storage compartments for storing items such as food. In this embodiment, the low-temperature storage compartments are a refrigerating compartment and a freezing compartment respectively; wherein the refrigerating compartment is located at the upper portion and the freezing compartment is located at the bottom portion. Each low-temperature storage compartment is provided with a respective door 10. The refrigerator has an evaporative refrigeration system forming a closed loop. Since such refrigeration systems are well known in the art, they will not be described in detail herein.

The refrigerator includes a vacuum packaging device disposed on the refrigerator door 10, and the vacuum packaging device may be disposed on the refrigerator door 10 corresponding to the refrigerating chamber or on the refrigerator door 10 corresponding to the freezing chamber. In this embodiment, the vacuum sealing device is disposed on the door 10 corresponding to the refrigerating chamber.

As shown in fig. 1 to 5, the door 10 includes a front panel 11 and an inner casing 12, and the front panel 11 and the inner casing 12 cooperate to define an accommodating chamber 13; the door 10 has an opening 110 formed on the front panel 11 and an installation opening 120 formed on the inner case 12. The mounting opening 120 of the inner casing 12 is provided with a mounting seat 14, and the mounting seat 14 includes a mounting plate 141 fixed to the inner casing 12 and a sealing member 142 surrounding the mounting opening 120.

The accommodating cavity 13 is internally provided with a fixing seat 2, as shown in fig. 6-8, the fixing seat 2 includes a fixing plate 21 fixed on the front panel 11, and the fixing plate 21 corresponds to the opening 110 on the front panel 11; a holding cavity 22 recessed toward one side of the inner shell 12 of the door 10 is formed on the fixing plate 21; the area below the fixing plate 21 is provided with a mounting channel 23, one end of the mounting channel 23 is communicated with the receiving cavity 22, and the other end is communicated with a mounting opening 120 on the inner shell 12. Wherein, the mounting channel 23 is communicated with the containing cavity 22 through a communication port 24; and a support plate 25 is provided along the lower edge of the communication port 24 in the housing chamber 22.

The vacuum packaging device is arranged on the fixed seat 2 and comprises an upper support 33 and a lower support 4, and one of the upper support 33 and the lower support 4 is fixedly connected to the box door 10; one of the upper support 33 and the lower support 4 moves up and down under the driving of the driving device 15; the upper support 33 and the lower support 4 are moved to a position where the upper support and the lower support are butted, and then a vacuum-pumping area is formed in a cavity between the upper support and the lower support. According to the invention, the fixing seat is arranged in the accommodating cavity 13 defined by the front panel 11 and the inner shell 12, and the vacuum packaging device is arranged on the fixing seat 2 so as to be arranged on the box door 10.

The upper support 33 is arranged in the accommodating cavity 22 of the fixed seat 2, and a first opening cavity 31 is formed at the lower end of the upper support 33; the lower support 4 is arranged on a support plate 25 in the containing cavity 22 through an installation channel 23; the upper end of the lower support 4 is provided with a second open cavity 41; when the lower support 4 is installed in place (the lower support 4 is installed on the support plate 25 in the accommodating cavity 22 through the installation channel 23), the first open cavity 31 corresponds to the second open cavity 41, and when the upper support 33 and the lower support 4 move to be in butt joint with each other, the first open cavity 31 and the second open cavity 41 jointly define a vacuum-pumping area, so that effective vacuum pumping can be realized. In this embodiment, the driving device 15 drives the upper support 33 to move up and down to be separated from or docked with the lower support 4. In this embodiment, the driving device 15 includes a driving motor and a rack, a driving gear is connected to an output shaft of the driving motor, the rack is engaged with the driving gear, and one end of the rack away from the driving motor is fixedly connected to the upper support 33, so as to convert the rotation motion of the driving motor into the linear motion of the rack, and finally drive the upper support 33 to move up and down.

A packaging area for performing plastic packaging treatment on the storage bag after the vacuumizing is finished is arranged on one side of the vacuumizing area close to the front panel 11, and a heat insulation pad 42 and a heating device 32 which are oppositely arranged are arranged in the packaging area; specifically, the heating device 32 is mounted on the lower surface of the upper support 33; the heat insulating mat 42 is mounted on the upper surface of the lower support 4. Wherein, the storing bag is made of plastic materials, and the vacuum packaging of the storing bag is completed under the heating action.

Specifically, as shown in fig. 9 to 12, the lower holder 4 includes a first housing 43; wherein, a first accommodating cavity 431 with an opening is formed in the first shell 43, and the opening end of the first accommodating cavity is positioned at one end of the first shell 43 close to the inner shell 12; the open end of the first housing 43 is formed with a connection plate 44, the connection plate 44 is mounted with a second housing 45, a second housing cavity 451 having an opening is formed in the second housing 45, and the open end of the second housing 45 is fitted with the connection plate 44. The first accommodating cavity 431 of the first shell 43 and the second accommodating cavity 451 of the second shell 45 are internally provided with heat insulation pieces, and the second shell 45, the heat insulation pieces and the upper connecting plate 44 of the lower support 4 are matched to form the heat insulation door 7. After the lower support 4 extends into the receiving cavity 22 through the mounting passage 23, the second housing 45 is mounted on the supporting plate 25, and the thermal door 7 cooperates with the sealing member 142 at the mounting opening 120 to effectively block the mounting opening 120 on the inner shell 12. In addition, the lower end of the second casing 45 is provided with a rotatable handle 8 to facilitate the operator to detach the lower support 4 from the door 10 by means of the handle 8.

As shown in fig. 13-14, the top of the upper support 33 is provided with a mounting seat 16, and the mounting seat 16 is provided with an air extractor 5 communicated with the vacuum-pumping area; the air extracting device 5 comprises an air extracting pipe 51 and a vacuum pump 52 communicated with the vacuum extracting area through the air extracting pipe 51. The upper support 33 is provided with a communication hole 33, and the exhaust pipe 51 of the exhaust device 5 is communicated with the first open cavity 31 through the communication hole 33 on the upper support 33, so that the vacuum pump 52 is communicated with the vacuum-pumping area when the upper support 33 and the lower support 4 are moved to be butted.

In this embodiment, the vacuum pump 52 of the air-extracting device 5 is mounted on the mounting base 16, and the driving device 15 for driving the upper support 33 to move up and down is also mounted on the mounting base 16. In this embodiment, two sets of driving motors, driving gears, and racks are provided to synchronously drive the two opposite ends of the upper support 33, thereby increasing the stability and reliability of the up-and-down movement of the upper support 33. The vacuum pump 52 and the driving device 15 are both disposed at the lower portion of the mounting base 16, and the driving device is disposed at two opposite sides of the vacuum pump 52.

In addition, the air exhaust pipe 51 is provided with a pressure detection unit and a pressure relief unit, both of which are mounted on the mounting base 16. The pressure detection unit is specifically a pressure sensor and is used for detecting the pressure of the vacuumizing area; the pressure relief unit is an electric pressure relief valve and is used for relieving pressure in the vacuumizing area. Before using, set up pressure sensor's setting value according to the vacuum in evacuation district, when needing to carry out the evacuation to the storing bag, open vacuum pump 52, when pressure detection unit detected the pressure in evacuation district and reached and set for the negative pressure value, control vacuum pump 52 stops, vacuum pump 52 can open or stop according to pressure sensor's detected value, the evacuation effect has been guaranteed, after evacuation and encapsulation operation are accomplished, can carry out the pressure release by automatic control evacuation district through opening electronic relief valve, convenience of customers takes out the storing bag.

A display control unit 17 is mounted on the side of the mounting base 16 close to the front panel 11, and an operation panel 18 is provided in the opening 110 of the front panel 11. The display and control unit 17 is used for displaying the working state of the vacuum packaging device and controlling the vacuum packaging device to start or stop. The user can determine whether the storage bag can be drawn out according to the working state of the vacuum sealing apparatus displayed by the display and control unit 17.

The operation panel 18 is formed with a socket 19 communicating with the package region. When the user is performing vacuum packing, bag opening 110 is inserted directly from socket 19 and extends between upper support 33 and lower support 4. After the upper support 33 is moved into the evacuated region to form a seal with the lower support 4, the opening of the pouch can be placed into the evacuated region and the insulation pad 42 in the enclosure region can be pressed against the heating device 32 to secure the pouch in the enclosure region. After the vacuumizing is finished, the storage bag can be quickly plastically packaged through the heating device 32 in the packaging area, according to the set control, after the heating device 32 works to meet the preset finishing condition, the driving device 15 is controlled to drive the upper support 33 to move upwards, and a user can draw out the storage bag to finish the plastic packaging of the storage bag. In this embodiment, the heating device 32 includes a heating wire, and the storage bag is sealed by heating the heating wire.

The fixed seat 2 is provided with a non-self-locking switch 6; the non-self-locking switch 6 comprises a trigger part 60, and the initial state of the trigger part is that the non-self-locking switch 6 is normally closed; when the trigger part 60 is acted by the outside, the non-self-locking switch 6 is in an open state; when the external action is removed, the trigger part 60 without the self-locking switch 6 is released, and the trigger part 60 automatically restores to the initial state; i.e. when the external action is removed, the non-self-locking switch 6 is in the off state.

When the lower support 4 is installed in place through the installation channel 23, the triggering part 60 of the non-self-locking switch 6 is triggered, the non-self-locking switch 6 is turned on, and a signal is transmitted to the display and control unit 17 to indicate that the lower support 4 is installed in place; the display control unit 17 controls the vacuum packaging module to normally work according to the system setting according to the received signal;

when the lower support 4 is not installed in place, the trigger part 60 without the self-locking switch 6 is in an initial state, and the self-locking switch 6 is turned off; when the self-locking switch 6 is not in the closed state, the lower support 4 is not installed in place, and at the moment, the display and control unit 17 controls the vacuum packaging device to be incapable of starting the vacuum pumping work, or simultaneously feeds back a fault or an alarm signal to remind a user that the lower support 4 is not installed in place and is incapable of starting the vacuum packaging device. The case where the lower bracket 4 is not mounted in place is described as two cases, the case where the lower bracket 4 is not mounted in place is described as the case where the lower bracket 4 is removed from the door 10, and the case where the lower bracket 4 is not mounted in place is described as the case where the lower bracket 4 is mounted in the housing chamber 22 but is not mounted in a position where the first open chamber 31 corresponds to the second open chamber 41.

The arrangement enables the lower support 4 to be in the in-place installation state to be in one-to-one correspondence with the non-self-locking switch 6 being turned on, and the non-in-place installation state of the lower support 4 is in one-to-one correspondence with the non-self-locking switch 6 being turned off. It should be noted that the non-self-locking switch 6 may be a micro switch, a cylindrical switch, a sector switch, or other mechanical switches without a self-locking function.

As shown in fig. 6 to 8, as a practical manner, the lower end portion of the lower holder 4 is provided with a touching portion 46, and the touching portion 46 is provided at the front end portion of the lower holder 4; the front end of the supporting plate 25 is provided with a notch 26, the non-self-locking switch 6 is arranged at the front end of the accommodating cavity 22, and the trigger part 60 of the non-self-locking switch 6 penetrates through the notch 26 and extends upwards into the accommodating cavity 22. In the present embodiment, the touching portions 46 are provided as ribs.

When the lower support 4 is installed in place, the touch part 46 at the front end part of the lower support 4 touches the non-self-locking switch 6, so that the trigger part 60 is touched, the non-self-locking switch 6 is opened, and a signal is sent to the display and control unit 17 to indicate that the lower support 4 is installed in place; the display control unit 17 controls the vacuum packaging module to work normally according to system settings;

when the lower support 4 is not installed in place, the lower support 4 is separated from the non-self-locking switch 6, the trigger part 60 is in an initial state, the non-self-locking switch 6 is in a closed state, the display and control unit 17 controls the vacuum packaging device to be incapable of starting vacuum pumping work, or simultaneously feeds back a fault or an alarm signal to remind a user that the lower support 4 is not installed in place and is incapable of starting the vacuum packaging device. In the embodiment, the non-self-locking switch 6 arranged at the front end of the fixed seat 2 is arranged as a microswitch; it should be understood that the non-self-locking switch 6 is not limited to a micro switch.

As shown in fig. 15-17, as another embodiment, the non-self-locking switch 6 is disposed at an end of the fixed base 2 close to the inner housing 12, and the trigger portion 60 of the non-self-locking switch 6 protrudes out of the fixed base 2 toward a side away from the front panel 11; in this embodiment, the non-self-locking switch 6 is disposed at the upper end of the installation channel 23, and the trigger portion 60 of the non-self-locking switch 6 protrudes from the port of the installation channel 23 near one end of the inner housing 12.

When the lower support 4 is installed in place, the connecting plate 44 (namely the heat preservation door 7) of the lower support 4 touches the non-self-locking switch 6, so that the trigger part 60 is touched, the non-self-locking switch 6 is opened, and a signal is sent to the display control unit 17 to indicate that the lower support 4 is installed in place; the display control unit 17 controls the vacuum packaging module to work normally according to system settings;

when the lower support 4 is not installed in place, the lower support 4 (namely the heat preservation door 7) is separated from the non-self-locking switch 6, the trigger part 60 is in an initial state, the non-self-locking switch 6 is in a closed state, the display and control unit 17 controls the vacuum packaging device to be incapable of starting vacuum pumping work, or simultaneously feeds back a fault or an alarm signal to remind a user that the lower support 4 is not installed in place and is incapable of starting the vacuum packaging device. In this embodiment, the non-self-locking switch 6 disposed at one end of the fixed seat 2 close to the inner shell 12 is a cylindrical switch; it should be understood that its non-latching switch 6 is not limited to a cylindrical switch.

As shown in fig. 18, a vacuum packaging method specifically includes the following steps:

starting the vacuum packaging device, and judging whether the lower support 4 is installed in place;

when the lower support 4 is installed in place, the air exhaust device 5 operates to carry out vacuum packaging;

when the lower support 4 is not installed in place, the air extracting device 5 does not work and sends out a prompt signal (a feedback fault or an alarm signal).

The invention is provided with a lower support which can be connected with or separated from a box door, and the box door is provided with a non-self-locking switch; when the lower support is installed in place, the non-self-locking switch is triggered to be turned on; when the lower support is not installed in place, the self-locking switch is not turned off; on one hand, the lower support can be detached to clean the retention in the lower support in time, so that the lower support is kept clean and tidy, and the vacuum packaging is ensured to be healthy and sanitary; on the other hand, the condition that whether the lower support is installed in place or not can be known, so that the vacuum packaging function is started on the premise that the lower support is installed in place, and the vacuum packaging function is prevented from being invalid due to the fact that the lower support is not installed in place.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The refrigerator is characterized in that: it includes:

a cabinet defining a storage compartment for storing food;

the display control unit is arranged on the box door;

the vacuum packaging device is arranged on the box door; it includes:

the air exhaust device is communicated with the vacuum-pumping area;

2. The refrigerator according to claim 1, wherein: the box door comprises a front panel with an opening and an inner shell with a mounting opening; the front panel is matched with the inner shell to define an accommodating cavity;

3. The refrigerator according to claim 2, wherein: the non-self-locking switch is arranged at one end of the accommodating cavity close to the front panel;

4. The refrigerator according to claim 3, wherein: a supporting plate is arranged in the accommodating cavity along the lower edge of the communication port, and the lower support is arranged on the supporting plate through the mounting channel;

5. The refrigerator according to claim 2, wherein: one end of the lower support close to the inner shell is provided with a heat-insulating door, and when the lower support is installed in place, the heat-insulating door blocks the installation opening;

6. The refrigerator according to claim 5, wherein: the non-self-locking switch is arranged on the fixed seat.

7. The refrigerator according to claim 5 or 6, wherein: the lower support comprises a first shell; a first accommodating cavity with an opening is formed in the first shell;

8. The refrigerator according to any one of claims 1 to 6, wherein: the non-self-locking switch is a microswitch, a cylindrical switch or a sector switch.

9. The refrigerator according to claim 2, wherein: one side of the vacuumizing area, which is close to the front panel, is provided with a packaging area used for carrying out plastic package treatment on the storage bag after vacuumizing is finished, and a heat insulation pad and a heating device which are oppositely arranged are arranged in the packaging area.

10. A vacuum packing method of a refrigerator according to any one of claims 1 to 9, characterized in that: the vacuum packaging method comprises the following steps:

starting the vacuum packaging device, and judging whether the lower support is installed in place;