Storage device capable of continuously keeping vacuum

Abstract

The utility model discloses a storage device capable of continuously keeping vacuum, which 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 which control the vacuum pump switch to be powered on and powered off 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. And the working pressure of the first negative pressure switch is different from that of the second negative pressure switch. According to the device, the pressure condition in the storage container is monitored in real time by using a group of negative pressure switches with pressure difference, and when the monitored pressure does not meet a set value, the vacuum pump is started to perform vacuum pumping 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, the overall function is complete, and the cost is low. The practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of small household appliance technology, and more specifically, it relates to a storage device that continuously maintains a vacuum. Background Technology

[0002] Most commercially available sealed storage containers consist of a container body and a lid connected by a seal. To create a vacuum inside the container when the lid is closed, a vacuum pump is usually installed on the container body or lid to evacuate the interior. Although a vacuum state can be achieved after a single vacuuming operation, air will slowly leak out over time, causing the vacuum level inside the storage container to drop. This results in the container failing to meet the initially set vacuum storage requirements and thus losing its vacuum preservation function. Therefore, this invention proposes a storage device that continuously maintains a vacuum. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a storage device that continuously maintains a vacuum.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to a storage device that continuously maintains a vacuum, including a storage container with a storage chamber, the container opening of the storage container is provided with a cover assembly for opening and closing the storage chamber, the cover assembly is sealed to the storage container, and the cover assembly is provided with a vacuum pumping device, a pressure relief device and a controller.

[0005] The vacuum pumping device includes a vacuum pump whose suction port is connected to the storage chamber, and a vacuum pump switch is electrically connected to the vacuum pump on the controller.

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

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

[0008] The present invention is further configured such that the base plate, side wall and top plate form a closed electrical installation chamber, and the vacuum device, pressure relief device and controller are all located in the electrical installation chamber.

[0009] The present invention is further configured such that: the pressure relief device includes an electromagnetic pressure relief valve electrically connected to the central processing unit, and one end of the electromagnetic pressure relief valve is connected to the storage chamber.

[0010] The present invention is further configured such that: 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 such that: the power source is a rechargeable lithium battery, and the lithium battery is connected to a charging interface provided on the side panel or top plate.

[0012] The present invention is further configured such that a status indicator light is provided on the touch screen.

[0013] A storage method based on the above-described storage device that continuously maintains a vacuum includes the following steps:

[0014] S1. First, seal the cap assembly to the opening of the storage container to prevent the storage chamber from communicating with the outside.

[0015] S2. Then use the first negative pressure switch and the second negative pressure switch to detect the internal pressure of the storage chamber and feed it back to the central processing unit; when the detected pressure value is greater than -15KPA, the central processing unit gives the vacuum pump switch to power on, so that the vacuum pump operates and performs a vacuuming operation on the storage chamber, until the second negative pressure switch detects that the pressure in the storage chamber is less than -35KPA and stops.

[0016] S3. Finally, the first and second negative pressure switches are used to detect the internal pressure of the storage chamber and feed it back to the central processing unit. 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 that continuously maintains vacuum involved in the present invention uses a set of negative pressure switches with pressure difference to monitor the pressure inside the storage container in real time. When the monitored pressure does not meet the set value, a vacuum pump will be started to perform a vacuuming action to ensure that the pressure inside the storage container meets the set requirements, thereby achieving continuous vacuum and preservation effect. The overall function is complete and the practicality is strong. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram illustrating the overall structure of the cover assembly of this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the cover assembly used to illustrate this utility model;

[0021] Figure 4 This utility model is a schematic diagram illustrating the structure of a PCB control motherboard. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0023] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0024] Example 1

[0025] See Figures 1 to 4 As shown, the storage device that continuously maintains vacuum in this embodiment includes a storage container 100 with a storage chamber (not shown), the 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 sealed to the storage container 100, and the cover assembly 200 is provided with a vacuum pumping device, a pressure relief device and a controller.

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

[0027] The controller includes a PCB control motherboard 202, which is equipped with a central processing unit and a power supply 203. The PCB control motherboard 202 is also equipped with a first negative pressure switch 204 and a second negative pressure switch 205 that control the vacuum pump switch to turn on and off. The detection ports on the second negative pressure switch 205 and the first negative pressure switch 204 are both connected to the storage chamber. 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 base plate 2001, a side panel 2002, and a top plate 2003, with a touch screen display 206 electrically connected to the central processing unit on the top plate 2003.

[0029] Furthermore, the base plate 2001, side wall 2002 and top plate 2003 together form an enclosed electrical installation chamber 2004, and the vacuum pump, pressure relief device and controller are all located in the electrical installation chamber 2004.

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

[0031] Furthermore, the first negative pressure switch 204 operates at a pressure of -15 kPa, and the second negative pressure switch 205 operates at a pressure of -35 kPa.

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

[0033] Furthermore, the touch display screen is equipped with status indicator lights.

[0034] A storage method based on the above-described storage device that continuously maintains a vacuum includes the following steps:

[0035] S1. First, seal the cap assembly to the opening of the storage container to prevent the storage chamber from communicating with the outside.

[0036] S2. Then use the first negative pressure switch and the second negative pressure switch to detect the internal pressure of the storage chamber and feed it back to the central processing unit; when the detected pressure value is greater than -15KPA, the central processing unit gives the vacuum pump switch to power on, so that the vacuum pump operates and performs a vacuuming operation on the storage chamber, until the second negative pressure switch detects that the pressure in the storage chamber is less than -35KPA and stops.

[0037] S3. Finally, the first and second negative pressure switches are used to detect the internal pressure of the storage chamber and feed it back to the central processing unit. 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 vacuum pump 201 is used to evacuate the container. During this process, the pressure inside the container is monitored by two pressure switches with a pressure difference, namely the first negative pressure switch 204 and the second negative pressure switch 205. When the detected pressure value is greater than -15 kPa, the central processing unit powers on the vacuum pump switch to make the vacuum pump work and evacuate the storage chamber. The operation stops when the second negative pressure switch detects that the pressure inside the storage chamber reaches -35 kPa.

[0039] When it is necessary to pressurize and open the lid assembly 200, the pressure relief device can be activated by operating the touch display screen to make the pressure difference inside and outside the container equal, so that the lid assembly 200 can be easily opened and items can be put in and taken out of the storage container 100.

[0040] The storage device that maintains a continuous vacuum involves using a set of negative pressure switches with a pressure difference to monitor the pressure inside the storage container in real time. When the monitored pressure does not meet the set value, a vacuum pump will be activated to perform a vacuuming action to ensure that the pressure inside the storage container meets the set requirements, thereby achieving a continuous vacuum and preservation effect. The device has complete functions and strong practicality.

[0041] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0042] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A storage device for continuously maintaining a vacuum, comprising a storage container having a storage chamber, wherein the opening of the storage container is provided with a cover assembly for opening and closing the storage chamber, the cover assembly being sealed to the storage container, characterized in that, The cover assembly is equipped with a vacuum pump, a pressure relief device, and a controller; The vacuum pumping device includes a vacuum pump whose suction port is connected to the storage chamber, and a vacuum pump switch is electrically connected to the vacuum pump on the controller. The controller includes a PCB control motherboard, which is equipped with a central processing unit and a power supply. The PCB control motherboard is also equipped with a first negative pressure switch and a second negative pressure switch that control the vacuum pump to turn on and off. The detection ports on the second negative pressure switch and the first negative pressure switch are both connected to the storage chamber. 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 base plate, side panels, and a top plate, with a touch screen on the top plate that is electrically connected to the central processing unit.

3. The storage device for continuously maintaining vacuum according to claim 2, characterized in that, The base plate, side walls, and top plate together form an enclosed electrical installation room, in which the vacuum pump, pressure relief device, and controller are all located.

4. The storage device for continuously maintaining vacuum according to claim 3, characterized in that, The pressure relief device includes an electromagnetic pressure relief valve electrically connected to the central processing unit, with one end of the electromagnetic pressure relief valve connected to the storage chamber.

5. The storage device for continuously maintaining vacuum according to claim 4, characterized in that, The first negative pressure switch operates at a pressure of -15 kPa, and the second negative pressure switch operates at a pressure of -35 kPa.

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

7. The storage device for continuously maintaining vacuum according to claim 6, characterized in that, The touch screen is equipped with status indicator lights.

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