Vacuum fresh-keeping machine with pressure display function

Abstract

A vacuum fresh-keeping machine with a pressure display function relates to the technical field of household appliances and comprises a machine body and a pressure display mechanism. A vacuum pump is arranged in the machine body; the pressure display mechanism comprises a shell, a spring, a piston and a pointer assembly, the shell is provided with a window and communicated with the vacuum pump, and the piston and the spring are arranged in the shell in a matched mode and used for driving the pointer assembly to act in the window according to the pressure of the vacuum pump, so that the pressure state of the vacuum pump is indicated. The pressure display mechanism can clearly and intuitively display the pressure state in the fresh-keeping container when the vacuum fresh-keeping machine is vacuumized, so that a user can accurately control the vacuumizing process conveniently, and the fresh-keeping container is prevented from being shrunken and deformed on the basis of ensuring that air in the fresh-keeping container is completely exhausted; the device has the advantages of simple structure, ingenious design, good practicability, wide application range and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a vacuum fresh-keeping machine with a pressure display function. Background Art

[0002] Vacuum fresh-keeping machines are new products in recent years. They are mainly used to remove air from fresh-keeping containers (such as fresh-keeping bags and fresh-keeping boxes, etc.) and complete the sealing process after reaching a predetermined vacuum degree, thereby blocking the environment for bacteria to breed and preventing food from spoiling and deteriorating, playing the role of sealing, preserving and maintaining quality. However, most existing vacuum fresh-keeping machines are not equipped with a pressure display mechanism. When vacuuming, the user cannot accurately control the negative pressure value in the fresh-keeping container, so it is easy for the fresh-keeping container to deform due to excessive internal and external pressure difference, or the air is not completely removed, affecting the fresh-keeping effect. Summary of the invention

[0003] The utility model provides a vacuum fresh-keeping machine with a pressure display function, the main purpose of which is to solve the problem of complex structure of the exhaust device of the existing cold brew coffee machine.

[0004] The utility model adopts the following technical solutions:

[0005] A vacuum fresh-keeping machine with a pressure display function comprises a machine body and a pressure display mechanism; a vacuum pump is arranged in the machine body; the pressure display mechanism comprises a shell, a spring, a piston and a pointer assembly, the shell is provided with a window, and the shell is connected to the vacuum pump, the piston and the spring are arranged in the shell in cooperation with each other, and are used to drive the pointer assembly to move in the window according to the pressure of the vacuum pump, thereby indicating the pressure state of the vacuum pump.

[0006] Furthermore, the window is a bar-shaped structure, and the pointer component is disposed in the window so as to be movable leftward and rightward.

[0007] Furthermore, the pointer assembly includes a float and a connecting rod. The float is horizontally movably arranged in the window. The float is vertically arranged at one end of the connecting rod, and the other end is fixedly connected to the piston.

[0008] Furthermore, the window is a circular structure, and the pointer assembly is rotatably disposed in the window.

[0009] Furthermore, the pointer assembly includes a rack, a gear and a pointer. The gear is rotatably mounted in the window, and the pointer is fixedly mounted in the middle of the gear. The rack is fixedly connected to the piston and meshes with the gear.

[0010] Furthermore, the pressure display mechanism is arranged in the body, and the body is provided with a hollow portion at a position corresponding to the window and provided with scale values.

[0011] Furthermore, the pressure display mechanism is arranged outside the body, and the shell is provided with scale values ​​beside the window.

[0012] Furthermore, the piston is provided with a guide rod with a limiting boss, the spring is sleeved outside the guide rod, one end of the spring abuts against the limiting boss, and the other end abuts against the side wall of the shell.

[0013] Furthermore, the shell is connected to the vacuum pump through a connecting pipe; or the shell is connected to the vacuum pump through a sealing cavity of the vacuum fresh-keeping machine.

[0014] Furthermore, a cover body is detachably provided at one end of the shell, and the cover body and the outside of the piston are both sleeved with a sealing ring that abuts against the inner wall of the shell.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The pressure display mechanism of the utility model can clearly and intuitively display the pressure state in the fresh-keeping container when the vacuum fresh-keeping machine is evacuating the vacuum, so that the user can accurately control the vacuuming process, thereby avoiding shrinkage and deformation while ensuring that the air in the fresh-keeping container is completely exhausted. The utility model has the advantages of simple structure, ingenious design, good practicality and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.

[0018] Figure 2 It is a structural schematic diagram of the pressure display mechanism and the vacuum pump in the first embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the exploded view of the pressure display mechanism in the first embodiment of the present utility model.

[0020] Figure 4 It is a cross-sectional schematic diagram of the pressure display mechanism in the first embodiment of the present utility model.

[0021] Figure 5 It is a structural schematic diagram of the pressure display mechanism and the vacuum pump in the second embodiment of the present utility model.

[0022] Figure 6 It is a cross-sectional schematic diagram of the pressure display mechanism in the second embodiment of the present utility model.

[0023] In the figure: 1-body; 11-vacuum pump; 12-hollow part; 2-pressure display mechanism; 21-connecting pipe; 22-shell; 220-window; 221-arc-shaped protrusion; 222-cover; 223-interface; 23-spring; 24-piston; 241-limiting boss; 242-guide rod; 25-pointer assembly; 251-buoy; 252-connecting rod; 253-rack; 254-gear; 255-pointer; 26-sealing ring. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention is described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0025] Embodiment 1:

[0026] like Figures 1 to 4 As shown, this embodiment provides a vacuum fresh-keeping machine with a pressure display function, including a machine body 1 and a pressure display mechanism 2; a vacuum pump 11 is arranged in the machine body 1; the pressure display mechanism 2 includes a housing 22, a spring 23, a piston 24 and a pointer assembly 25, the housing 22 is provided with a window 220, and the housing 22 is connected to the vacuum pump 11; the piston 24 and the spring 23 are arranged in the housing 22 in cooperation with each other, and are used to drive the pointer assembly 25 to move in the window 220 according to the pressure of the vacuum pump 11, so as to indicate the pressure state of the vacuum pump 11. The pressure display mechanism 2 in the utility model can clearly and intuitively display the pressure state in the fresh-keeping container when vacuuming, so as to facilitate the user to accurately control the vacuuming process, thereby avoiding the occurrence of shrinkage and deformation on the basis of ensuring that the air in the fresh-keeping container is completely exhausted, and has the advantages of simple structure, ingenious design, good practicality and wide application range.

[0027] like Figures 2 to 4 As shown, the housing 22 in this embodiment is connected to the vacuum pump 11 through an additional connecting pipe 21. In other embodiments, the housing 22 can also be directly connected to the vacuum pump 11 through the original sealing cavity of the vacuum fresh-keeping machine.

[0028] like Figures 2 to 4As shown, the window 220 in this embodiment is preferably a strip structure, and the pointer assembly 25 can be movably arranged in the window 220. Specifically, the pointer assembly 25 includes a buoy 251 and a connecting rod 252. The buoy 251 can be horizontally movably arranged in the window 220. The buoy 251 is vertically arranged at one end of the connecting rod 252, and the other end is fixedly connected to the piston 24. When the pressure value in the vacuum pump 11 changes, the piston 24 will drive the connecting rod and the buoy 251 to move horizontally in the window 220 under the synchronous action of the pressure and the spring 23, thereby indicating the corresponding pressure value. Based on the specific structure of the pointer assembly 25, the shell 22 is designed as a cylindrical structure in this embodiment, so that the pressure display mechanism 2 is more aesthetically pleasing as a whole.

[0029] like Figure 3 and Figure 4 As shown, the piston 24 is provided with a guide rod 242 with a limiting boss 241, and the spring 23 is sleeved outside the guide rod 242. One end of the spring 23 abuts against the limiting boss 241, and the other end abuts against the side wall of the housing 22. The guide rod 242 can play a guiding role, ensuring that the piston 24 is smoothly displaced horizontally under the pressure of the vacuum pump 11 or the elastic force of the spring 23, thereby driving the pointer assembly 25 to accurately indicate the current negative pressure value.

[0030] like Figure 3 and Figure 4 As shown, an arc-shaped protrusion 221 is provided at the front end of the housing 22 to limit the displacement distance of the piston 24. A cover 222 is detachably provided at the rear end of the housing 22. By disassembling the cover 222, it is convenient to assemble or maintain the piston 24, spring 23 and other components in the housing 22. In order to facilitate connection with the vacuum pump 11, the cover 222 is also provided with an interface 223 for installing the connecting pipe 21. In addition, a sealing ring 26 that abuts against the inner wall of the housing 22 is also sleeved on the outside of the cover 222 and the piston 24, thereby ensuring the sealing performance in the housing 22.

[0031] like Figure 1 As shown, the pressure display mechanism 2 in this embodiment is arranged in the body 1, and the body 1 is provided with a hollow portion 12 at the corresponding position of the window 220, and a corresponding scale value (not shown in the figure) is provided. Specifically, the scale value does not need to reflect the detailed pressure value, but only needs to reflect the three pressure values ​​of "low", "medium" and "high". In addition, in other embodiments, the pressure display mechanism 2 can also be directly arranged outside the body 1, and a scale value is provided beside the window 220 of the shell 22.

[0032] Embodiment 2:

[0033] Different from the first embodiment, the window 220 in this embodiment is a circular structure, and the pointer assembly 25 is rotatably arranged in the window 220. Specifically, the pointer assembly 25 in this embodiment includes a rack 253, a gear 254 and a pointer 255. The gear 254 is rotatably installed in the window 220, and a pointer 255 is fixedly arranged in the middle of the gear 254; the rack 253 is fixedly connected to the piston 24 and meshes with the gear 254. When the pressure value in the vacuum pump 11 changes, the piston 24 will drive the rack 253 to move horizontally under the synchronous action of the pressure and the spring 23, and then drive the gear 254 and the pointer 255 to rotate in the window 220, thereby indicating the corresponding pressure value. Based on the specific structure of the pointer assembly 25, the housing 22 is designed as a rectangular structure in this embodiment, so that the pressure display mechanism 2 is more aesthetically pleasing as a whole.

[0034] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A vacuum fresh-keeping machine with pressure display function, characterized in that: It comprises a body and a pressure display mechanism; a vacuum pump is arranged in the body; the pressure display mechanism comprises a shell, a spring, a piston and a pointer assembly, the shell is provided with a window, and the shell is connected to the vacuum pump, the piston and the spring are arranged in the shell in cooperation with each other, and are used to drive the pointer assembly to move in the window according to the pressure of the vacuum pump, so as to indicate the pressure state of the vacuum pump.

2. A vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The window is a bar-shaped structure, and the pointer component is arranged in the window so as to be movable leftward and rightward.

3. A vacuum fresh-keeping machine with pressure display function as claimed in claim 2, characterized in that: The pointer assembly includes a float and a connecting rod. The float is horizontally movably arranged in the window. The float is vertically arranged at one end of the connecting rod, and the other end is fixedly connected to the piston.

4. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The window is a circular structure, and the pointer assembly is rotatably arranged in the window.

5. A vacuum fresh-keeping machine with pressure display function as claimed in claim 4, characterized in that: The pointer assembly includes a rack, a gear and a pointer. The gear is rotatably mounted in the window, and the pointer is fixedly arranged in the middle of the gear. The rack is fixedly connected to the piston and meshes with the gear.

6. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The pressure display mechanism is arranged in the body, and the body is provided with a hollow portion at a position corresponding to the window and is provided with scale values.

7. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The pressure display mechanism is arranged outside the machine body, and the shell is provided with scale values ​​beside the window.

8. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The piston is provided with a guide rod with a limiting boss, the spring is sleeved outside the guide rod, one end of the spring abuts against the limiting boss, and the other end abuts against the side wall of the shell.

9. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: The shell is connected to the vacuum pump through a connecting pipe; or the shell is connected to the vacuum pump through a sealing cavity of the vacuum fresh-keeping machine.

10. The vacuum fresh-keeping machine with pressure display function as claimed in claim 1, characterized in that: A cover body is detachably provided at one end of the shell, and the cover body and the outside of the piston are both sleeved with a sealing ring that abuts against the inner wall of the shell.

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