Storage device and method capable of continuously keeping vacuum

Abstract

The invention discloses a storage device capable of continuously keeping vacuum. The storage device comprises a storage container, a cover assembly is arranged on the storage container, and a vacuumizing device, a pressure relief device and a controller are arranged on the cover assembly; the controller comprises a PCB control main board, a central processing unit and a power source are arranged on the PCB control main board, a first negative pressure switch and a second negative pressure switch are further arranged on the PCB control main board, and detection ports in the second negative pressure switch and the first negative pressure switch are both connected with the storage cavity. The working pressure of the first negative pressure switch is different from that of the second negative pressure switch; the invention further discloses a storage method for continuously keeping vacuum based on the storage device. A group of negative pressure switches with pressure difference is used for monitoring the pressure condition in the storage container in real time, and when the monitored pressure does not meet a set value, the vacuum pump is started to perform vacuumizing action so as to ensure that the pressure value in the storage container meets the set requirement, so that the continuous vacuum and fresh-keeping effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of small household appliances, and more particularly to a storage device and method for continuously maintaining a vacuum. Background Art

[0002] Most of the sealed storage containers on the market are made of a barrel body and a barrel cover connected by a seal. In order to make the inside of the container with the barrel cover closed vacuum, a vacuum pump is usually installed on the barrel body or the barrel cover to evacuate the container. Although the container can reach a vacuum state after a single vacuuming action, the seal will slowly leak air over time, and the vacuum degree in the storage container will decrease, resulting in failure to meet the initially set vacuum storage requirements, thereby losing the vacuum preservation function. Accordingly, the present invention proposes a storage device and method for continuously maintaining a vacuum. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a storage device and method for continuously maintaining a vacuum.

[0004] In order to solve the above technical problems, the object of the present invention is achieved as follows: a storage device for continuously maintaining a vacuum according to the present invention comprises a storage container having a storage chamber, a container opening of the storage container is provided with a cover assembly for opening and closing the storage chamber, the cover assembly is sealedly connected to the storage container, and a vacuum device, a pressure relief device and a controller are provided on the cover assembly;

[0005] The vacuum pump comprises a vacuum pump whose air suction port is connected to the storage chamber, and the vacuum pump is electrically connected to a vacuum pump switch provided on the controller;

[0006] The controller includes a PCB control mainboard, on which a central processing unit and a power supply are arranged. The PCB control mainboard is also provided with a first negative pressure switch and a second negative pressure switch for controlling the on and off of the vacuum pump switch. The detection ports on the second negative pressure switch and the first negative pressure switch are both connected to the storage chamber, and the working pressures of the first negative pressure switch and the second negative pressure switch are different.

[0007] The present invention is further configured as follows: the cover assembly includes a bottom plate, side panels and a top plate, and the top plate is provided with a touch display screen electrically connected to the central processing unit.

[0008] The present invention is further configured as follows: the bottom plate, the side enclosure and the top plate form a closed electrical installation room, and the vacuum pumping device, the pressure relief device and the controller are all arranged in the electrical installation room.

[0009] The present invention is further configured as follows: the pressure relief device comprises an electromagnetic pressure relief valve electrically connected to the central processing unit, and a valve port at one end of the electromagnetic pressure relief valve is connected to the storage chamber.

[0010] The present invention is further configured as follows: the working pressure of the first negative pressure switch is -15KPA, and the working pressure of the second negative pressure switch is -35KPA.

[0011] The present invention is further configured as follows: the power source is a rechargeable lithium battery, and the lithium battery is electrically connected to a charging interface arranged on the side wall or the top plate.

[0012] The present invention is further configured as follows: a status indicator light is provided on the touch display screen.

[0013] A storage method for continuously maintaining vacuum based on the above storage device comprises the following steps:

[0014] S1. First, the cover assembly is sealed and connected to the container opening of the storage container so that the storage chamber is not connected to the outside world;

[0015] S2. Use the first negative pressure switch and the second negative pressure switch to detect the pressure inside the storage chamber and feed it back to the central processor; when the detected pressure value is greater than -15KPA, the central processor powers on the vacuum pump switch to operate the vacuum pump and evacuate the storage chamber until the second negative pressure switch detects that the pressure inside the storage chamber is less than -35KPA;

[0016] S3. Finally, the first negative pressure switch and the second negative pressure switch are used to detect the pressure inside the storage chamber and feed it back to the central processor, and the vacuum pump is operated intermittently to keep the pressure in the storage chamber between -15KPA and -35KPA to achieve a continuous vacuum effect.

[0017] In summary, the present invention has the following beneficial effects: the storage device and method for continuously maintaining a vacuum involved in the present invention uses a group of negative pressure switches with a pressure difference to monitor the pressure in the storage container in real time. When the monitored pressure does not meet the set value, the vacuum pump will be started to perform a vacuum operation to ensure that the pressure value in the storage container meets the set requirements, thereby achieving a continuous vacuum and preservation effect, with complete overall functionality and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the cover assembly used in the present invention;

[0020] Figure 3 It is a partial structural schematic diagram of the present invention for embodying the cover assembly;

[0021] Figure 4It is a structural schematic diagram of the present invention for embodying a PCB control mainboard. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the patent requirements of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0023] The present invention is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0024] Example 1

[0025] See also Figures 1 to 4 As shown, a storage device for continuously maintaining a vacuum according to this embodiment includes a storage container 100 having a storage chamber (not shown), a container opening of the storage container 100 is provided with a cover assembly 200 for opening and closing the storage chamber, the cover assembly 200 is sealedly connected to the storage container 100, and a vacuum pumping device, a pressure relief device and a controller are provided on the cover assembly 200;

[0026] The vacuum pumping device comprises a vacuum pump 201 whose air suction port is connected to the storage chamber, and the vacuum pump 201 is electrically connected to a vacuum pump switch provided on the controller;

[0027] The controller includes a PCB control mainboard 202, on which a central processing unit and a power supply 203 are provided. The PCB control mainboard 202 is also provided with a first negative pressure switch 204 and a second negative pressure switch 205 for controlling the on and off of the vacuum pump switch. The second negative pressure switch 205 and the detection port on the first negative pressure switch 204 are both connected to the storage chamber, and the working pressures of the first negative pressure switch 204 and the second negative pressure switch 205 are different.

[0028] Furthermore, the cover assembly 200 includes a bottom plate 2001, a side panel 2002 and a top plate 2003, and the top plate 2003 is provided with a touch display screen 206 electrically connected to the central processing unit.

[0029] Furthermore, the bottom plate 2001 , the side panel 2002 and the top plate 2003 together form a closed electrical installation room 2004 , and the vacuum pumping device, the pressure relief device and the controller are all arranged in the electrical installation room 2004 .

[0030] Furthermore, the pressure relief device includes an electromagnetic pressure relief valve 207 electrically connected to the central processing unit, and a valve port at one end of the electromagnetic pressure relief valve 207 is connected to the storage chamber.

[0031] Furthermore, the working pressure of the first negative pressure switch 204 is -15KPA, and the working pressure of the second negative pressure switch 205 is -35KPA.

[0032] Furthermore, the power source 203 is a rechargeable lithium battery, and the lithium battery is electrically connected to a charging interface provided on the side wall or the top plate.

[0033] Furthermore, a status indicator light is provided on the touch display screen.

[0034] A storage method for continuously maintaining vacuum based on the above storage device comprises the following steps:

[0035] S1. First, the cover assembly is sealed and connected to the container opening of the storage container so that the storage chamber is not connected to the outside world;

[0036] S2. Use the first negative pressure switch and the second negative pressure switch to detect the pressure inside the storage chamber and feed it back to the central processor; when the detected pressure value is greater than -15KPA, the central processor powers on the vacuum pump switch to operate the vacuum pump and evacuate the storage chamber until the second negative pressure switch detects that the pressure inside the storage chamber is less than -35KPA;

[0037] S3. Finally, the first negative pressure switch and the second negative pressure switch are used to detect the pressure inside the storage chamber and feed it back to the central processor, and the vacuum pump is operated intermittently to keep the pressure in the storage chamber between -15KPA and -35KPA to achieve a continuous vacuum effect.

[0038] In this embodiment, the storage container 100 is first closed by using the cover assembly 200, and then the container is evacuated by the vacuum pump 201. During this period, the pressure in the container is monitored by using the first negative pressure switch 204 and the second negative pressure switch 205 with a pressure difference. When the detected pressure value is greater than -15KPA, the central processing unit powers on the vacuum pump switch to operate the vacuum pump and evacuate the storage chamber until the second negative pressure switch detects that the pressure in the storage chamber reaches -35KPA and stops.

[0039] When the cover assembly 200 needs to be opened by increasing pressure, the pressure relief device can be activated by operating the touch screen to make the pressure difference inside and outside the container equal, so that the cover assembly 200 can be easily opened to take and put items inside the storage container 100.

[0040] The storage device and method for continuously maintaining a vacuum involved in the present invention uses a group of negative pressure switches with a pressure difference to monitor the pressure in the storage container in real time. When the monitored pressure does not meet the set value, the vacuum pump will be started to perform a vacuum operation to ensure that the pressure value in the storage container meets the set requirements, thereby achieving a continuous vacuum and preservation effect. The overall function is complete and the practicability is strong.

[0041] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0042] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A storage device that continuously maintains a vacuum, comprising a storage container having a storage chamber, a container opening of the storage container being provided with a cover assembly for opening and closing the storage chamber, the cover assembly being sealedly connected to the storage container, characterized in that: The cover assembly is provided with a vacuum device, a pressure relief device and a controller; The vacuum pump comprises a vacuum pump whose air suction port is connected to the storage chamber, and the vacuum pump is electrically connected to a vacuum pump switch provided on the controller; The controller includes a PCB control mainboard, on which a central processing unit and a power supply are arranged. The PCB control mainboard is also provided with a first negative pressure switch and a second negative pressure switch for controlling the on and off of the vacuum pump switch. The detection ports on the second negative pressure switch and the first negative pressure switch are both connected to the storage chamber, and the working pressures of the first negative pressure switch and the second negative pressure switch are different.

2. The storage device for continuously maintaining vacuum according to claim 1, characterized in that: The cover assembly includes a bottom plate, side panels and a top plate, and the top plate is provided with a touch display screen electrically connected to the central processing unit.

3. The storage device for continuously maintaining vacuum according to claim 2, characterized in that: The bottom plate, the side enclosure and the top plate form a closed electrical installation room, and the vacuum pumping device, the pressure relief device and the controller are all arranged in the electrical installation room.

4. The storage device for continuously maintaining vacuum according to claim 3, characterized in that: The pressure relief device comprises an electromagnetic pressure relief valve electrically connected to the central processing unit, and a valve port at one end of the electromagnetic pressure relief valve is connected to the storage chamber.

5. The storage device for continuously maintaining vacuum according to claim 4, characterized in that: The working pressure of the first negative pressure switch is -15KPA, and the working pressure of the second negative pressure switch is -35KPA.

6. The storage device for continuously maintaining vacuum according to claim 5, characterized in that: The power source is a rechargeable lithium battery, and the lithium battery is electrically connected to a charging interface arranged on the side wall or the top plate.

7. The storage device for continuously maintaining vacuum according to claim 6, characterized in that: A status indicator light is arranged on the touch display screen.

8. A method for storing a vacuum continuously according to claim 7, characterized in that: The following steps are involved: S1. First, the cover assembly is sealed and connected to the container opening of the storage container so that the storage chamber is not connected to the outside world; S2. Use the first negative pressure switch and the second negative pressure switch to detect the pressure inside the storage chamber and feed it back to the central processor; when the detected pressure value is greater than -15KPA, the central processor powers on the vacuum pump switch to operate the vacuum pump and evacuate the storage chamber until the second negative pressure switch detects that the pressure inside the storage chamber is less than -35KPA; S3. Finally, the first negative pressure switch and the second negative pressure switch are used to detect the pressure inside the storage chamber and feed it back to the central processor, and the vacuum pump is operated intermittently to keep the pressure in the storage chamber between -15KPA and -35KPA to achieve a continuous vacuum effect.

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