Drawer type vacuum fresh-keeping machine

Abstract

A drawer type vacuum fresh-keeping machine comprises a machine shell, a movable pressing cover, a supporting base and a vacuumizing assembly, a first vacuum sealing set is arranged on the top face of the supporting base, and the two ends of the movable pressing cover are arranged above the supporting base in a lifting mode through telescopic assemblies respectively. The bottom face of the movable gland is provided with a second vacuum sealing set matched with the first vacuum sealing set to form a first vacuum pumping cavity, the vacuum pumping assembly is connected with the first vacuum pumping cavity, the telescopic assembly comprises a flexible part forming a second vacuum pumping cavity and a reset spring, the flexible part is fixed to the machine shell, and the reset spring is connected with the second vacuum pumping cavity. The vacuumizing assembly is connected with the second vacuumizing cavity through the pipeline switching device, and the reset spring is vertically installed in the second vacuumizing cavity. When in use, an operator does not need to manually press the movable gland, so that the use is more convenient; and the pipeline switching device is connected with the vacuumizing assembly, the telescopic assembly is vacuumized by means of the vacuumizing assembly, a magnet is not needed, a stainless steel material is not needed to manufacture the top cover, and the equipment cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum preservation technology, and more specifically to a drawer-type vacuum preservation machine. Background Technology

[0002] A vacuum sealer is a device that uses vacuum technology to extend the shelf life of food and other items. By removing air from the packaging and reducing the oxygen content, it effectively prevents bacterial growth and food oxidation, thus maintaining the freshness and taste of the food.

[0003] Chinese utility model patent CN 221757863U discloses an easy-to-operate vacuum sealing machine, including a vacuum base with a vacuum chamber inside. Telescopic rods are fixedly installed around the vacuum base, with a top cover at the end of the telescopic rods furthest from the vacuum base. A limiting spring is fitted onto the telescopic rods. An air suction pump is fixedly installed on the vacuum base and connected to it. A heating element is installed in the vacuum base, with its output end located on the surface of the vacuum base. The heating element and the air suction pump are electrically connected. A push-button start switch is installed on the vacuum base and electrically connected to the movable air suction pump. A return spring is installed on the push-button start switch. When vacuum sealing is required, the open end of a plastic bag is placed into the vacuum chamber of the vacuum base. By pressing down the top cover, the top cover presses down on the push-button start switch, covering the vacuum chamber. The air suction pump starts, drawing air out of the plastic bag. Then, the heating element heats and seals the plastic bag, completing the sealing process.

[0004] However, the vacuum sealing machine with this structure requires the operator to press the top cover during vacuum sealing, which is not very convenient. Furthermore, the use of magnets to attach the stainless steel top cover to avoid continuous pressing necessitates the use of stainless steel for the top cover, increasing both cost and overall weight. Therefore, we provide a drawer-type vacuum sealing machine. Utility Model Content

[0005] This invention provides a drawer-type vacuum preservation machine, which aims to solve the above-mentioned shortcomings of existing vacuum preservation machines.

[0006] The present invention adopts the following technical solution:

[0007] A drawer-type vacuum preservation machine includes a casing, a movable pressure cover, a support base, a heating component, and a vacuuming component. The support base is located at the lower part of the casing, and a first vacuum sealing assembly is provided on the top surface of the support base. The two ends of the movable pressure cover are respectively mounted on the casing and located above the support base via a telescopic component. The bottom surface of the movable pressure cover is provided with a second vacuum sealing assembly that cooperates with the first vacuum sealing assembly to form a vacuuming chamber. The vacuuming component is connected to the first vacuuming chamber. The heating component is also provided inside the first vacuuming chamber. The telescopic component includes a flexible element that forms a second vacuuming chamber and a return spring that resets the flexible element. The flexible element is fixed to the casing. The vacuuming component is connected to the second vacuuming chamber via a pipeline switching device. The return spring is vertically installed inside the second vacuuming chamber.

[0008] In a preferred embodiment, the movable cover is further provided with a sensor switch.

[0009] In a preferred embodiment, the flexible component is a foldable silicone cylinder or a foldable rubber cylinder.

[0010] In a preferred embodiment, each side of the housing is provided with a guide seat with an open top, each guide seat is equipped with a flexible component, and a guide bracket is fixedly provided on the upper part of the flexible component. Both ends of the movable cover are fixedly connected to the guide bracket by a connecting plate, and a notch groove adapted to the connecting plate is opened on the inner side of each guide seat.

[0011] In a preferred embodiment, the vacuum pump assembly includes a vacuum pump, a first vacuum tube, a second vacuum tube, and a circuit board. The suction end of the vacuum pump is connected to a suction pipe, and the suction pipe is connected in parallel with the first and second vacuum tubes. The end of the first vacuum tube is connected to the second vacuum chamber of the flexible component, and the end of the second vacuum tube is connected to the first vacuum chamber. The pipeline switching device includes a first solenoid valve and a second solenoid valve. The first solenoid valve is installed on the first vacuum tube, and the second solenoid valve is installed on the second vacuum tube. The vacuum pump, the first solenoid valve, and the second solenoid valve are electrically connected to the circuit board.

[0012] In a preferred embodiment, the top surface of the support base also forms a liquid storage tank, and the support base is detachably installed on the lower part of the housing.

[0013] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages:

[0014] 1. The cap of this utility model is connected to the housing at both ends by retractable components. The retractable components include a flexible part forming a second vacuum chamber and a return spring. The second vacuum chamber of the flexible part is connected to the vacuum assembly. The vacuum assembly evacuates the flexible part, causing it to contract and pull the movable cap downwards, forming a vacuum chamber I with a sealed connection to the support base. The vacuum assembly evacuates the first vacuum chamber through a pipeline switching device, completing the vacuuming of the bag. After completion, the pressure in both the first and second vacuum chambers can be released. Therefore, this drawer-type vacuum preservation machine does not require the operator to manually press the movable cap, making it more convenient to use. Furthermore, the connection to the vacuum assembly via the pipeline switching device, which evacuates the retractable component, eliminates the need for magnets and a stainless steel top cover, saving equipment costs.

[0015] 2. This utility model uses folded silicone cylinders or folded rubber cylinders as flexible components, which are not prone to deformation or cracking during long-term use and have a long service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is an exploded view of the present invention. Figure 1 .

[0019] Figure 4 This is an exploded view of the present invention. Figure 2 . Detailed Implementation

[0020] The following reference Figure 1 The specific embodiments of this utility model are described below. To provide a comprehensive understanding of this utility model, many details are described below; however, those skilled in the art can implement this utility model without these details. Well-known components, methods, and processes will not be described in detail below.

[0021] A drawer-type vacuum preservation machine, as shown in the reference Figures 1 to 3 The system includes a housing 10, a movable pressure cover 20, a support base 30, a heating assembly, and a vacuum assembly. The housing 10 has an opening slot 100 at its lower part, and the support base 30 is installed at the lower part of the opening slot 100. The top surface of the support base 30 is provided with a first vacuum sealing assembly, specifically including a first groove 31 and a first sealing ring 32 sealingly connected to the edge of the top surface of the first groove 31.

[0022] Reference Figure 2 and Figure 3The movable pressure cap 20 is vertically mounted on the housing 10 above the support base 30 via a telescopic component at both ends. The bottom surface of the movable pressure cap 20 has a second vacuum sealing assembly that cooperates with the first vacuum sealing assembly to form a vacuum chamber. Specifically, this includes a second groove 21 and a second sealing ring 22 sealingly connected to the edge of the second groove 21. A heating component is installed inside the second groove 21, preferably using heating silicone 41. The movable pressure cap 20 also has a sensor switch 23 for sensing the bag inside the vacuum chamber.

[0023] Reference Figure 2 and Figure 3 The aforementioned retractable component includes a flexible element 51 and a return spring 52 for resetting the flexible element 51. The flexible element 51 is preferably a foldable silicone or foldable rubber cylinder. A second vacuum chamber is formed inside the flexible element 51, and the second vacuum chamber is connected to the vacuum assembly via a pipeline switching device. The return spring 52 is vertically installed within the second vacuum chamber.

[0024] Reference Figures 2 to 4 The aforementioned housing 10 has a guide seat 11 with an open top on each side. Each guide seat 11 is equipped with a flexible member 51. A guide bracket 53 is fixedly installed on the upper part of the flexible member 51. The two ends of the movable pressure cover 20 are fixedly connected to the guide bracket 53 through a connecting plate 24. Each guide seat 11 has a notch 110 on its inner side that matches the connecting plate 12, providing clearance for the vertical movement of the connecting plate 12.

[0025] Reference Figure 3 and Figure 4 The aforementioned vacuum assembly includes a vacuum pump 61, a first vacuum tube 62, a second vacuum tube 63, and a circuit board 64. The suction end of the vacuum pump 61 is connected to a suction pipe 65, which is connected in parallel to the first vacuum tube 62 and the second vacuum tube 63. The end of the first vacuum tube 62 is connected to the second vacuum chamber of the flexible component 51, and the end of the second vacuum tube 63 is connected to the first vacuum chamber. The pipeline switching device includes a first solenoid valve 66 and a second solenoid valve 67. The first solenoid valve 66 is installed on the first vacuum tube 62, and the second solenoid valve 64 is installed on the second vacuum tube 63. The aforementioned inductive switch 23, vacuum pump 61, first solenoid valve 66, and second solenoid valve 67 are electrically connected to the circuit board 64.

[0026] Reference Figure 3 The aforementioned support base 30 is detachably attached to the lower part of the housing 10 by means of a pull-out mechanism. The top surface of the support base 30 also forms a liquid storage tank 33, which is located inside the first tank 21 to store the liquid extracted when vacuuming food containing liquid.

[0027] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A drawer-type vacuum preservation machine, comprising a housing, a movable pressure cover, a support base, a heating assembly, and a vacuum assembly, wherein the support base is disposed at the lower part of the housing, a first vacuum sealing assembly is provided on the top surface of the support base, both ends of the movable pressure cover are respectively mounted on the housing via a telescopic assembly and positioned above the support base, the bottom surface of the movable pressure cover is provided with a second vacuum sealing assembly that cooperates with the first vacuum sealing assembly to form a vacuum chamber, the vacuum assembly is connected to the vacuum chamber, and the heating assembly is further provided inside the vacuum chamber, characterized in that: The telescopic assembly comprises a flexible piece forming the second vacuum chamber and a reset spring for resetting the flexible piece, the flexible piece is fixed on the casing, the vacuum assembly is connected with the second vacuum chamber through a pipeline switching device, and the reset spring is vertically installed in the second vacuum chamber.

2. The drawer-type vacuum fresh keeping machine according to claim 1, characterized in that: The mobile gland is further provided with an inductive switch.

3. The drawer-type vacuum fresh keeping machine according to claim 1, characterized in that: The flexible piece is a folded silica gel column or a folded rubber column.

4. The drawer-type vacuum fresh-keeping machine according to claim 1 or 3, characterized in that: Two sides of the casing are respectively provided with a top-open guiding seat, each guiding seat is provided with the flexible piece, an upper part of the flexible piece is fixedly provided with a guiding bracket, two ends of the mobile gland are fixedly connected with the guiding brackets through a connecting plate, and an inner side of each guiding seat is provided with a notch groove matched with the connecting plate.

5. The drawer-type vacuum fresh keeping machine according to claim 1, wherein: The vacuum assembly comprises a vacuum pump, a first vacuum pipe, a second vacuum pipe and a circuit board, an air suction pipe is connected with a suction end of the vacuum pump, the first vacuum pipe and the second vacuum pipe are connected in parallel with the air suction pipe, a tail end of the first vacuum pipe is connected with the second vacuum chamber of the flexible piece in communication, a tail end of the second vacuum pipe is connected with the first vacuum chamber in communication, the pipeline switching device comprises a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is installed on the first vacuum pipe, the second electromagnetic valve is installed on the second vacuum pipe, and the vacuum pump, the first electromagnetic valve and the second electromagnetic valve are electrically connected with the circuit board.

6. The drawer-type vacuum fresh keeping machine according to claim 1, characterized in that: A top surface of the supporting base further forms a liquid storage groove, and the supporting base is detachably installed on the lower part of the casing.

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