CN114061196A - A kind of refrigerator - Google Patents

Abstract

The invention relates to the technical field of refrigerator preservation, and discloses a refrigerator which comprises a low-temperature storage chamber and a door body for opening or closing the storage chamber, wherein a vacuum storage device is arranged on the door body, an air suction joint is detachably communicated with the vacuum storage device and is rotatably arranged on the door body, the air suction joint is communicated with a vacuum pump through a vacuum tube, the vacuum pump is used for pumping gas in the vacuum storage device, a pressure relief system is arranged on the vacuum tube and is used for monitoring and controlling the balance between the gas pressure in the vacuum tube and the external gas pressure in real time, the effect of facilitating the opening of the air suction joint is achieved by arranging the pressure relief device on a vacuumizing assembly, when vacuumizing is completed, negative pressure is formed in the joint of the air suction joint and a vacuum box, so that the vacuum air suction joint is difficult to pull out, the external gas is filled into the vacuum tube through the pressure relief valve and is contacted with the negative pressure, the air pressure at the joint of the vacuum box and the vacuumizing assembly is balanced, and the suction joint is convenient to open.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of refrigerator preservation, in particular to a refrigerator.

Background

In the preservation technology of the refrigerator, oxygen is closely related to the oxidation and respiration of food in the refrigerator, the slower the respiration of the food is, the lower the oxidation is, the longer the preservation time is, the oxygen content in the storage space is reduced, and the food preservation effect is obvious, therefore, the refrigerator with the vacuum preservation function becomes more and more mainstream, the existing vacuum preservation refrigerator is provided with a vacuum box in a low-temperature storage chamber of the refrigerator, and for the requirement that partial users need to carry the vacuum box with them, the vacuum box and a vacuumizing assembly need to be arranged in a detachable connection mode, so research and development personnel design a connection mode that the vacuumizing assembly and the vacuum box are detachably connected by arranging a plugging assembly at the connection position of the vacuumizing assembly and the vacuum box, but in experiments, the vacuumizing assembly pumps the vacuum box to a vacuum state, in the vacuum tube, especially the inside of the connection part of the plugging device is also in a negative pressure state, and under the action of atmospheric pressure, the plugging component at the connection part is difficult to take down and can be separated from the vacuum box and the vacuum pumping component only by brute force, but the connection at the plugging device is broken forcibly, so that the vacuum box and the plugging device are easily damaged, and therefore, much inconvenience is brought to users.

Disclosure of Invention

In some embodiments of this application, provide a refrigerator, solved vacuum box evacuation operation back through setting up pressure relief system, the joint of dismantling of joint and vacuum box of breathing in is in negative pressure state to the problem that is difficult to the separation.

In some embodiments of the application, the connecting structure of the vacuum storage device and the air suction joint is improved, the air suction joint is rotatably connected with the door body, and the air suction joint and the vacuum storage device are detachably communicated, so that the dismounting and mounting form of the vacuum storage device is simplified, the connection and the dismounting of the vacuum storage device and the vacuum tube are also facilitated, and meanwhile, the vacuum storage device is conveniently put into or taken out of the refrigerator.

In some embodiments of the application, the structure of the vacuum tube is improved, and the pressure relief device is arranged on the vacuum tube, so that after the vacuum pumping operation is completed, external air is filled into the vacuum tube by the pressure relief device, the negative pressure at the joint of the suction joint and the sealing interface is balanced, and the suction joint is conveniently opened.

In some embodiments of the application, the structure of the vacuum tube is improved, and the pressure sensor is arranged on the vacuum tube to detect the air pressure in the vacuum tube in real time, so that the pressure relief operation response is more accurate.

In some embodiments of the application, the control structure of the pressure relief system is improved, the controller is electrically connected with the vacuum pump, the pressure sensor and the pressure relief device, the controller is used for controlling the current working state of the vacuum pump and the pressure relief device, and the display panel is used for displaying the current air pressure value measured by the pressure sensor and working parameters set by the control panel, so that the air pressure in the vacuum tube is intelligently balanced.

In some embodiments of the present application, a refrigerator, it includes low temperature storeroom and opens or closes the door body of storeroom, be provided with vacuum storage device on the door body, the last detachable intercommunication of vacuum storage device has the joint of breathing in, the joint of breathing in is rotatable setting on the door body simultaneously, the joint of breathing in has the vacuum pump through vacuum tube intercommunication, the vacuum pump is used for extracting the interior gas of vacuum storage device, be provided with pressure relief system on the vacuum tube, pressure relief system is used for real-time supervision and controls the interior gas pressure of vacuum tube and external atmospheric pressure balance.

In some embodiments of this application, vacuum storage device includes vacuum box and vacuum box lid, vacuum box lid detain in the vacuum box is in order to form sealed environment, be provided with sealing interface, relief valve and fixing device on the vacuum box lid, sealing interface is used for the installation intercommunication the joint of breathing in, the relief valve sets up in the sealing interface, be used for blocking or the intercommunication gas and external gas in the vacuum storage device, fixing device be used for with vacuum box lid fixed connection be in on the vacuum box.

In some embodiments of the present application, a rotation device is disposed at a connection between the air suction connector and the door body, the rotation device includes an insertion portion and a mounting plate, the insertion portion is disposed on the air suction connector, the mounting plate is mounted on an inner side wall of the door body, an insertion matching portion is disposed on the mounting plate, and the insertion portion is connected with the insertion matching portion in a rotatable matching manner.

In some embodiments of the present application, the insertion portions are two insertion ribs symmetrically disposed on two sides of the air suction connector, the insertion fitting portions are two insertion grooves corresponding to the insertion ribs, the insertion ribs are inserted into the insertion grooves, and the rotating device connects the air suction connector to the door body in a rotatable manner.

In some embodiments of the present application, the pressure relief system includes a pressure relief device, and the pressure relief device is communicated with the vacuum tube, and is used for introducing external air into the vacuum tube to control the balance between the air pressure in the vacuum tube and the external air pressure.

In some embodiments of the present application, the pressure relief system further includes a pressure sensor, and the pressure sensor is communicated with the vacuum tube and is used for measuring the air pressure in the vacuum tube in real time.

In some embodiments of the present application, the pressure relief system further comprises a controller electrically connected to the vacuum pump, the pressure sensor, and the pressure relief device.

In some embodiments of the present application, the controller includes a display screen and a control panel, the display screen is electrically connected to the control panel, the control panel is used for controlling the vacuum pump and the current working state of the pressure relief device, and the display panel is used for displaying the current air pressure value measured by the pressure sensor and the working parameters set by the control panel.

In some embodiments of the present application, a method of controlling a refrigerator is disclosed, the method including:

s1, presetting a target air pressure value in the vacuum box through the controller;

s2, starting the vacuum pump, and vacuumizing the vacuum box through the vacuum tube;

s3, the pressure sensor monitors the air pressure values in the vacuum box and the vacuum tube in real time, and when the air pressure value in the vacuum box reaches a preset target air pressure value, the controller controls the vacuum pump to stop working;

s4, the controller controls the pressure relief device to start, and the pressure relief device fills external air into the vacuum tube to balance the negative pressure at the connection position of the air suction joint and the sealing interface;

and S5, pulling the suction joint out of the sealed interface to separate the vacuum box from the connection state of the vacuum-pumping assembly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a structural view of a refrigerator according to an embodiment;

FIG. 2 is a block diagram of a door body according to an embodiment;

FIG. 3 is a diagram of a vacuum storage device configuration according to an embodiment;

FIG. 4 is a cross-sectional view of a vacuum storage device according to an embodiment;

FIG. 5 is a diagram of a vacuum box lid structure according to an embodiment;

FIG. 6 is a cross-sectional view of a vacuum chamber lid (with a pressure relief valve open) according to an embodiment;

FIG. 7 is a cross-sectional view of a vacuum box lid (with the relief valve closed) according to an embodiment;

FIG. 8 is a diagram of a controller architecture according to an embodiment;

FIG. 9 is a diagram of a suction fitting coupled to a door according to an embodiment;

FIG. 10 is a diagram of a vacuum storage device coupled to a suction fitting according to an embodiment;

FIG. 11 is a cross-sectional view of a vacuum storage device coupled to a suction fitting according to an embodiment;

FIG. 12 is an enlarged cross-sectional view B of the vacuum storage device in connection with the suction fitting according to an embodiment;

FIG. 13 is a diagram of a vacuum pump and pressure relief system connection according to an embodiment (enlarged view at A);

FIG. 14 is a diagram of a vacuum pump coupled to a pressure relief device, according to an embodiment;

FIG. 15 is a circuit connection diagram according to an embodiment;

fig. 16 is a diagram of tubing connections according to an embodiment.

Reference numerals:

100. a low temperature storage compartment; 200. a door body; 201. a mounting frame; 300. a vacuum storage device; 301. a vacuum box cover; 302. a vacuum box; 303. sealing the interface; 304. a pressure relief valve; 305. a fixing device; 400. a vacuum pump; 500. a pressure relief system; 501. a pressure relief device; 502. a pressure sensor; 503. a controller; 504. a display screen; 505. a control panel; 600. a suction connection; 601. mounting a plate; 602. a plug-in part; 603. a plug-in mating portion; 604. an accommodating portion; 700. a vacuum tube.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

FIG. 1 is a perspective view of one embodiment of a refrigerator of the present application; the refrigerator of the present embodiment has an approximately rectangular parallelepiped shape, including: the low temperature storage chamber 100 is a box structure with an opening at one end, the low temperature storage chamber 100 forms a low temperature storage space, the door 200 is installed at the opening of the low temperature storage chamber 100 and is used for opening or closing the low temperature storage chamber 100, when the door 200 is closed, the low temperature storage chamber 100 is in a closed state, the door 200 comprises a door 200 outer shell located outside the storage chamber and a door 200 inner shell located inside the storage chamber, and a heat insulating layer is arranged between the door 200 outer shell and the door 200 inner shell, and is usually filled with foaming materials.

According to some embodiments of the present application, as shown in fig. 1 and fig. 2, a vacuum tube is arranged inside the door body 200, one end of the vacuum tube is communicated with the suction connector 600, the other end of the vacuum tube is connected with the vacuum pump 400, the vacuum pump 400 is arranged inside the door body 200, the mounting frame 201 is arranged on the inner side wall of the door body 200, the vacuum storage device 300 is placed on the mounting frame 201, the upper side of the vacuum storage device 300 can be disassembled and communicated with the suction connector 600, the vacuum storage device 300 is communicated or disconnected, one end of the suction connector 600 can be rotatably connected to the door body 200, so as to facilitate opening and closing of the suction connector 600, the vacuum tube is communicated with the pressure relief system 500, and the pressure relief device 501 is used for detecting and balancing the pressure in the vacuum tube in real time.

In other embodiments of the present application, the vacuum storage device 300 may be disposed at other positions in the refrigerator, and is not limited herein.

It should be noted that, the vacuum storage device 300 provides a vacuum storage environment for the stored articles, meanwhile, since the vacuum storage device 300 is located inside the door 200, when the door 200 is closed, the vacuum storage device 300 is located in the low-temperature storage chamber, the vacuum pump 400 pumps air in the vacuum storage device 300 through the vacuum tube to perform low-temperature preservation on the food materials to be preserved in the vacuum storage device 300, so as to reduce oxygen content in the storage space, the stored articles in the vacuum storage device 300 will obtain a vacuum and low-temperature storage environment, so that the preservation effect is better, and the preservation effect and the preservation duration are improved, the vacuum storage device 300 can be detached by using the plug-in connection of the air suction connector 600 and the sealing interface 303, the air suction connector 600 and the door 200 can be rotatably connected, which facilitates the connection and disconnection between the air suction connector 600 and the vacuum storage device 300, and also solves the problem that when the air suction connector 600 and the vacuum storage device 300 are disconnected, the placement of the suction fitting 600.

As shown in fig. 3, 4, 5, 6 and 7, the vacuum storage apparatus 300 includes a vacuum box 302 and a vacuum box 302 cover 301, the vacuum box 302 cover 301 is hermetically sealed to the vacuum box 302, so as to form a vacuum-tight storage space, a sealing interface 303, a pressure relief valve 304 and a fixing device 305 are arranged on the cover 301 of the vacuum box 302, the pressure relief valve 304 is arranged in the sealing interface 303, used for blocking or communicating the gas in the test box with the outside gas, the pressure relief valve 304 is a one-way valve, when sucking the air into the sealing interface 303, the pressure relief valve 304 is opened by the suction force, drawing air inside the vacuum storage device 300 to the outside, when stopping breathing in, relief valve 304 closes naturally, makes vacuum storage device 300 totally sealed, and fixing device 305 is used for locking the lid on vacuum box 302, a specific embodiment of this application, is provided with the jack catch on the vacuum box 302, and fixing device 305 sets up to the hasp, and the jack catch is connected with the hasp cooperation and is detained vacuum box 302 lid 301 sealed lid in vacuum box 302.

It should be noted that, the vacuum storage device 300 is designed to be separated so as to facilitate the food material to be preserved to be put in and taken out, the pressure release valve 304 is arranged on the lid 301 of the vacuum box 302 so as to facilitate the opening of the lid 301 of the vacuum box 302, when the vacuum storage device 300 is in a vacuum state and the lid 301 of the vacuum box 302 needs to be opened, the pressure release valve 304 can be manually pulled out and opened, the outside air rapidly enters the vacuum storage device 300 through the pressure release valve 304, the air pressure in the vacuum storage device 300 is balanced with the atmospheric pressure, and the vacuum storage device 300 can be opened by disengaging the fixing device 305.

As shown in fig. 2 and 9, one end of the suction connector 600 is connected with the door body 200, a rotating device is arranged at the joint, it is ensured that the suction connector 600 can rotate around the joint of the door body 200 at a certain angle, the rotating device comprises a plugging portion 602 and a plugging matching portion 603, the plugging portion 602 is arranged on the side face of one end of the suction connector 600, a mounting plate 601 is arranged on the inner side wall of the door body 200, the plugging matching portion 603 is arranged on the mounting plate 601, the plugging matching portion 603 is matched with the plugging portion 602, and the rotatable detachable connection between the suction connector 600 and the door body 200 is realized. In an embodiment of the present application, the insertion portion 602 is configured as an insertion rib, the insertion mating portion 603 is configured as an insertion groove matched with the size of the insertion rib, and the insertion rib is connected with the insertion groove in a matching manner.

It should be noted that, the inner wall of the door body 200 is provided with the accommodating portion 604 and the mounting plate 601, and the accommodating portion 604 is a concave structure, so that the situation that the mounting plate 601 protrudes outside the door body 200 to occupy a refrigerating space is avoided. According to one embodiment of the invention, the air suction connector 600 and the door body 200 are connected by adopting the insertion ribs and the insertion grooves, the insertion ribs and the insertion grooves are both cylindrical, the air suction connector 600 can rotate along the axis where the insertion ribs and the insertion grooves are located, the air suction connector 600 is in a horizontal state and is hermetically connected with the vacuum storage device 300, a user can manually rotate the air suction connector 600 to a vertical state, the vacuum storage device 300 is disconnected with the door body 200, and the vacuum storage device 300 is detached from the interior of the refrigerator, so that the use requirements of the user are met.

As shown in fig. 9, 10, 11 and 12, the suction connector 600 is connected to the sealing port 303 in a pluggable manner, the suction connector 600 is provided with a protrusion which is inserted into the sealing port 303 and is in sealed communication with the sealing port 303, when the vacuum pump 400 is started, the pressure release valve 304 is opened by suction force, and the suction connector 600 is communicated with the vacuum storage device 300 to suck air out of the vacuum storage device 300.

As shown in fig. 13 and 14, the vacuum tube is communicated with a pressure relief system 500, the pressure relief system 500 includes a pressure relief device 501, a pressure sensor 502 and a controller 503, the pressure relief device 501 is communicated with the vacuum tube and is used for filling air into the vacuum tube to balance the air pressure in the vacuum tube, after the vacuum pumping operation is completed, the pressure relief device 501 fills external air into the vacuum tube, and balances the negative pressure at the connection position of the suction connector 600 and the sealing connector 303, so as to facilitate the opening of the suction connector 600.

It should be noted that the whole process of evacuating the vacuum storage 300 is to start the vacuum pump 400, the vacuum storage device 300 is vacuumized through the vacuum tube, after the vacuumization is finished, the vacuum pump 400 stops running, the vacuum storage device 300 is in a negative pressure state, the vacuum tube and the connection part of the suction connector 600 and the sealing interface 303 are in a negative pressure state, at the moment, the suction connector 600 is difficult to pull out from the sealing interface 303 due to the action of atmospheric pressure, the pressure relief device 501 is started to charge external air into the vacuum tube, due to the action of the pressure relief valve 304 on the vacuum reservoir 300, the charge of air does not enter the vacuum reservoir 300, therefore, the vacuum state of the vacuum storage device 300 is not destroyed, at this time, the negative pressure at the connection of the vacuum tube and the suction connector 600 with the sealing interface 303 is balanced, the suction fitting 600 is easily pulled out of the sealing port 303 at the same pressure as the outside atmosphere.

As shown in FIG. 13, the pressure relief system 500 further comprises a pressure sensor 502, wherein the pressure sensor 502 is connected to the vacuum tube for measuring the air pressure in the vacuum tube.

It should be noted that the pressure sensor 502 is connected to the vacuum tube to measure the air pressure in the vacuum tube in real time, and when the vacuum tube is in a vacuum state, because the vacuum tube is in a connection state with the vacuum storage device 300, the pressure sensor 502 measures the air pressure value in the vacuum storage device 300 in real time, and when the vacuum state is finished, the vacuum tube and the connection portion of the suction connector 600 and the sealing connector 303 are kept connected, and at this time, the pressure sensor 502 also measures the air pressure in the connection portion of the suction connector 600 and the sealing connector 303 in real time.

In one embodiment of the present invention, as shown in fig. 2 and fig. 8, the pressure relief system 500 further includes a controller 503, the controller 503 is electrically connected to the vacuum pump 400, the pressure sensor 502 and the pressure relief device 501, the controller 503 includes a display 504 and a control board 505, the display 504 is electrically connected to the control board 505, the control board 505 is used for controlling the current working state of the vacuum pump 400 and the pressure relief device 501, and the display 504 is used for displaying the current air pressure value measured by the pressure sensor 502.

In other embodiments of the present application, the controller 503 may also be disposed at other positions in the refrigerator, and is not limited herein.

It should be noted that the whole process of controlling the vacuum storage device 300 to vacuumize by the controller 503 is that the controller 503 is used to set a target air pressure value of the vacuum storage device 300, the display screen 504 displays the currently set target parameters, the vacuum pump 400 is started to vacuumize the vacuum storage device 300, the pressure sensor 502 measures the air pressure in the vacuum storage device 300 in real time and converts the pressure signal into an electrical signal to be transmitted to the control board 505, the control board 505 converts the electrical signal into a digital signal to be transmitted to the display screen 504 to display the current air pressure in the vacuum storage device 300, when the pressure sensor 502 measures that the air pressure in the vacuum storage device 300 reaches the preset target air pressure, the signal is transmitted to the control board 505, the control board 505 controls the vacuum pump 400 to stop working, the pressure release valve 304 on the vacuum storage device 300 is closed, the pressure release device 501 is started to charge the external air into the vacuum tube, the air pressure at the connection between the vacuum tube and the suction connection 600 and the sealed interface 303 is kept balanced with the outside atmospheric pressure, and at this time, the suction connection 600 is pulled out of the sealed interface 303.

In addition, in an embodiment of the present invention, the set vacuum degree is two gears, the gear selection can be set by one key of the controller 503, and the two gears are-20 KPA and-10 KPA, respectively, where-10 KPA is used for fruit and vegetable preservation, and-20 KPA is used for meat and dried fruit preservation, which facilitates the user operation.

As shown in fig. 15, the circuit connection form of the present application is:

the controller 503 is electrically connected to the vacuum pump 400, the pressure sensor 502 and the pressure relief device 501, respectively, the controller 503 sets a target air pressure value of the vacuum storage device 300, and the display screen 504 converts a set electric signal of the controller 503 into a digital signal for display, wherein the display includes: the vacuum pump 400 is manually operated to vacuumize the vacuum storage 300 according to the currently set target parameters and the current pressure state in the vacuum storage 300, the pressure sensor 502 measures the pressure in the vacuum storage 300 in real time, and converts the pressure signal into an electrical signal to be transmitted to the control board 505, the control board 505 converts the electrical signal into a digital signal to be transmitted to the display 504 to display the current air pressure in the vacuum storage device 300, when the pressure sensor 502 measures that the air pressure in the vacuum storage 300 reaches the preset target air pressure, the signal is transmitted to the control board 505, the control board 505 controls the vacuum pump 400 to stop operating, meanwhile, the pressure relief valve 304 on the vacuum storage device 300 is closed, and the controller 503 controls the pressure relief device 501 to be started, so that the outside air is filled into the vacuum tube, and the air pressure at the joint of the vacuum tube and the suction connector 600 with the sealing interface 303 is kept balanced with the outside atmospheric pressure.

As shown in fig. 16, the pipe connection form of the present application is:

the vacuum pump 400 is communicated with a vacuum pipe, the other end of the vacuum pipe is communicated with a suction joint 600, a sealing interface 303 is arranged on the vacuum storage device 300, the suction joint 600 is inserted and communicated with the sealing interface 303, the suction joint 600 is connected with the sealing interface 303 in a pluggable manner, the vacuum pipe is communicated with two three-way pipes, two ends of one three-way pipe are respectively communicated with the vacuum pipe, the other end of the three-way pipe is communicated with a pressure relief device 501, two ends of the other three-way pipe are respectively communicated with the vacuum pipe, the other end of the three-way pipe is communicated with a pressure sensor 502, after the vacuum pump 400 is started, the vacuum storage device 300 is pumped to a vacuum state through the vacuum pipe, when the vacuum is pumped, the vacuum pipe is communicated with the vacuum storage device 300 due to the opening of a pressure relief valve 304, the vacuum pipe is communicated with the pressure sensor 502, the pressure sensor 502 measures the air pressure in the vacuum storage device 300, and after the vacuum is pumped, the vacuum pipe is in a negative pressure state, the suction connector 600 is tightly connected with the sealing interface 303 under the action of atmospheric pressure, at the moment, the pressure relief device 501 is started, external air is introduced into a vacuum tube, the air pressure at the joint of the suction connector 600 and the sealing interface 303 is balanced, when the pressure relief device 501 is started, the pressure relief valve 304 is naturally sealed without the suction effect of the vacuum pump 400, the pressure sensor 502 measures the air pressure at the joint of the suction connector 600 and the sealing interface 303 in real time, when the air pressure returns to the standard atmospheric pressure, the pressure relief device 501 stops running, and at the moment, the suction connector 600 can be easily pulled out.

An embodiment of the application is based on the refrigerator, and a using method of the refrigerator comprises the following steps:

s1, presetting a target air pressure value in the vacuum storage device 300 through the controller 503;

s2, starting the vacuum pump 400, and vacuumizing the vacuum storage device 300 through the vacuum pipe;

s3, the pressure sensor 502 real-time monitors the air pressure in the vacuum storage device 300 and the vacuum tube, and when the air pressure in the vacuum storage device 300 reaches a preset target air pressure, the controller 503 controls the vacuum pump 400 to stop working;

s4, the controller 503 controls the pressure relief device 501 to start, and the pressure relief device 501 fills external air into the vacuum tube to balance the negative pressure at the connection position of the air suction joint 600 and the sealing interface 303;

s5, the suction connector 600 is pulled out from the sealing port 303, and the vacuum storage device 300 is disconnected from the vacuum tube.

As shown in the drawings, the drawings and the drawings, in one embodiment of the present invention, a vacuum storage device 300 is detachably disposed on a door 200, when the door 200 is closed, the vacuum storage device 300 is ensured to be located in a low-temperature storage chamber 100, when the door 200 is opened, a user can conveniently take out and place the vacuum storage device 300, one end of an air suction connector 600 is rotatably mounted on the door 200 through a rotating device, and the air suction connector 600 is detachably connected to the vacuum storage device 300, wherein the air suction connector 600 includes an operating state and a non-operating state, when in the operating state, the air suction connector 600 is communicated with the vacuum storage device 300, and the air suction connector 600 is vertically disposed relative to the door 200; based on the operation state, the user upwardly breaks the suction nozzle 600, and the suction nozzle 600 rotates about the rotating means and is out of communication with the vacuum storage 300, which is a non-operation state.

Vacuum tube one end is connected in vacuum storage device 300, vacuum pump 400 is connected to the other end, the vacuum tube passes through the mount to be fixed on door body 200, door body 200 top is provided with the installation cavity, vacuum pump 400 sets up in door body 200 internally mounted intracavity, vacuum pump 400 is connected with the three-way pipe, three-way pipe one end intercommunication has pressure relief device 501, the vacuum tube is connected respectively at the other both ends of three-way pipe in vacuum pump 400's induction port, pressure sensor 502 communicates in the one end of another three-way pipe, the other both ends of this three-way pipe communicate the vacuum tube respectively, controller 503 electricity is connected with vacuum pump 400, pressure relief device 501 and pressure sensor 502. .

It should be noted that, the vacuum pump 400, the pressure relief device 501 and the pressure sensor 502 are disposed in the inner space of the door 200, so as to improve the space utilization rate of the refrigerator, so that the vacuum pump 400 and the pressure relief device 501 do not occupy the storage space, thereby improving the available capacity of the storage space of the refrigerator, and at the same time, the vacuum storage device 300 is disposed on the door 200, which is also convenient for the user to take, the suction connector 600 is rotatably disposed on the door 200, on one hand, the integrity and the beauty of the door 200 are not damaged, on the other hand, if the suction connector 600 is randomly placed in the refrigerator, the suction connector 600 is easily blocked by the sundries placed in the refrigerator, thereby influencing the reuse of the vacuum pumping assembly, the problem that the suction connector 600 is rotatably fixed on the door 200 is well solved, in addition, the problem that the connection of the suction connector 600 is at negative pressure and is difficult to open after the vacuum pumping is solved by the pressure relief device 501, the pressure relief device 501 is used for balancing the air pressure in the vacuum tube at the joint of the air suction connector 600 and the sealing interface 303, and the pressure sensor 502 and the controller 503 realize the effect of intelligently balancing the air pressure in the vacuum tube.

According to the first concept of the application, after the vacuum box is vacuumized, the whole system is in a negative pressure state at the joint of the air suction joint and the sealing interface due to good sealing performance, and when the rotary joint is manually broken to reset, the force of atmospheric pressure acting on the rotary joint needs to be overcome.

According to the second concept of the application, the pressure sensor is communicated with the vacuum tube to measure the air pressure in the vacuum tube in real time, when the vacuum tube is in a vacuum pumping state, the vacuum tube and the vacuum box are in a communicated state, the pressure sensor measures the air pressure value in the vacuum box in real time, when the vacuum pumping state is finished, the vacuum tube and the air suction connector are communicated with the sealing interface connection part, and at the moment, the pressure sensor also measures the air pressure at the air suction connector and the sealing interface connection part in real time.

According to the third concept of the present application, a rotating device is arranged at the joint of the air suction joint and the door body, the air suction joint changes the communication state with the vacuum storage device through rotation, when the air suction joint is horizontal, the vacuum pipe and the vacuum storage device are in sealed communication through the air suction joint, and when the vacuum pipe and the vacuum storage device need to be disconnected or the vacuum storage device needs to be disassembled, the air suction joint is rotated to realize disconnection and communication.

According to the fourth concept of the application, the controller is electrically connected to the vacuum pump, the pressure sensor and the pressure relief device, the controller comprises a display screen and a control panel, the display screen is electrically connected to the control panel, the control panel is used for controlling the current working state of the vacuum pump and the pressure relief device, the display panel is used for displaying the current air pressure value measured by the pressure sensor, the set vacuum degree is two gears, the gear selection can be set through one key of the controller, the two gears are-10 KPA and-20 KPA respectively, wherein-10 KPA is used for keeping fruits and vegetables fresh, and-20 KPA is used for keeping meat and dried fruits fresh, so that the operation of a user is facilitated.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A refrigerator, comprising:

a low temperature storage chamber to form a low temperature storage space;

the door body is used for opening or closing the low-temperature storage chamber;

characterized in that, the refrigerator still includes:

the vacuum storage device is detachably arranged on the door body to form a vacuum storage space;

the air suction connector is arranged on the door body, is rotatably connected with the door body and is detachably communicated with the vacuum storage device;

the vacuum pump is communicated with one end of the vacuum pipe, and the other end of the vacuum pipe is communicated with the air suction joint;

and the pressure relief system is communicated with the vacuum tube and is used for monitoring and balancing the air pressure in the vacuum tube.

2. The refrigerator according to claim 1, wherein the vacuum storage device comprises a vacuum box and a vacuum box cover, the vacuum box cover is fastened to the vacuum box to form a sealed environment, a sealing interface, a pressure release valve and a fixing device are arranged on the vacuum box cover, the sealing interface is used for installing and communicating the air suction connector, the pressure release valve is arranged in the sealing interface and used for blocking or communicating air in the vacuum storage device and outside air, and the fixing device is used for fixedly connecting the vacuum box cover to the vacuum box.

3. The suction connector is characterized in that a rotating device is arranged at the joint of the suction connector and the door body, the rotating device comprises an inserting part and a mounting plate, the inserting part is arranged on the suction connector, the mounting plate is mounted on the inner side wall of the door body, an inserting matching part is arranged on the mounting plate, and the inserting part is rotatably matched and connected with the inserting matching part.

4. The suction fitting as claimed in claim 3, wherein the insertion parts are two insertion ribs symmetrically disposed at both sides of the suction fitting, the insertion fitting parts are two insertion grooves disposed corresponding to the insertion ribs, the insertion ribs are inserted into the insertion grooves, and the rotating means rotatably connects the suction fitting to the door body.

5. A pressure relief system for a refrigerator as claimed in claims 1-2, wherein said pressure relief system comprises a pressure relief device, said pressure relief device being connected to said vacuum tube for introducing ambient air into said vacuum tube to control the pressure in said vacuum tube to be balanced with the ambient air pressure.

6. The pressure relief system of claim 5, further comprising a pressure sensor in communication with the vacuum tube for real-time measurement of the pressure within the vacuum tube.

7. The pressure relief system of claim 6, further comprising a controller electrically connected to the vacuum pump, the pressure sensor, and the pressure relief device.

8. The pressure relief system according to claim 7, wherein said controller comprises a display screen and a control board, said display screen is electrically connected to said control board, said control board is used for controlling the current working status of said vacuum pump and said pressure relief device, said display board is used for displaying the current air pressure value measured by said pressure sensor and the working parameters set by said control board.

9. A control method of a refrigerator according to claims 1-8, the method comprising:

s1, presetting a target air pressure value in the vacuum box through the controller;

s2, starting the vacuum pump, and vacuumizing the vacuum box through the vacuum tube;

s3, the pressure sensor monitors the air pressure values in the vacuum box and the vacuum tube in real time, and when the air pressure value in the vacuum box reaches a preset target air pressure value, the controller controls the vacuum pump to stop working;

s4, the controller controls the pressure relief device to start, and the pressure relief device fills external air into the vacuum tube to balance the negative pressure at the connection position of the air suction joint and the sealing interface;

and S5, pulling the suction joint out of the sealed interface to separate the vacuum box from the connection state of the vacuum-pumping assembly.

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