A pressure relief mechanism for a vacuum sterilizing cabinet

Abstract

The utility model discloses a kind of pressure relief mechanisms for vacuum sterilization cabinet, including the air inlet pressure relief valve being set on vacuum cabinet door, air inlet pressure relief valve includes fixed frame, press key, spring and silica gel sealing element, fixed frame is horizontally set in vacuum cabinet door, fixed frame outer end is placed in vacuum cabinet door outside, fixed frame is equipped with mounting hole in, fixed frame side is equipped with outer suction port, vacuum cabinet door inside is equipped with inner air inlet, inner air inlet and mounting hole are communicated, press key is movably set in mounting hole, press key inner end and silica gel sealing element of vacuum cabinet door inside are connected fixed, spring is placed in mounting hole, the spring elasticity pushes press key and moves outward, until silica gel sealing element seals inner air inlet, press press key, press key overcomes spring elasticity and drives silica gel sealing element to move inward, gas enters cabinet door inside through outer suction port, press key inner end and the gap between mounting hole, inner air inlet. The utility model in the air inlet pressure relief valve is convenient for the vacuum inner bag pressure relief of sterilization cabinet.

Description

Technical Field

[0001] This utility model relates to the field of disinfection cabinet technology, specifically to a pressure relief mechanism for a vacuum disinfection cabinet. Background Technology

[0002] Most existing disinfection cabinets achieve disinfection through high temperature, ultraviolet absorption, or ozone, and can basically only be used for the disinfection and storage of tableware. These disinfection cabinets occupy a lot of kitchen space, but the types of items that can be stored are limited, and it is difficult to store items such as dried goods, precious medicinal materials, health supplements, valuable paintings and calligraphy, clothing, and high-end tea, so their functions are limited. Utility Model Content

[0003] The purpose of this invention is to provide a pressure relief mechanism for a vacuum sterilizer that allows for convenient pressure relief.

[0004] The purpose of this utility model is achieved as follows.

[0005] A pressure relief mechanism for a disinfection cabinet includes an air inlet pressure relief valve installed on the vacuum cabinet door. The air inlet pressure relief valve includes a fixing frame, a press button, a spring, and a silicone seal. The fixing frame is horizontally installed inside the vacuum cabinet door, with its outer end positioned outside the vacuum cabinet door. The fixing frame has a mounting hole inside and an external air intake on its side. The vacuum cabinet door has an internal air intake on its inner side, which communicates with the mounting hole. The press button is movably installed in the mounting hole, with its inner end connected and fixed to the silicone seal on the inner side of the vacuum cabinet door. The spring is placed in the mounting hole, and its elastic force pushes the press button outward until the silicone seal seals the internal air intake. When the press button is pressed, it overcomes the spring's elastic force and moves the silicone seal inward. Gas enters the inner side of the cabinet door through the external air intake, the gap between the inner end of the press button and the mounting hole, and the internal air intake.

[0006] Furthermore, the vacuum cabinet door includes a glass plate and a back cover plate. The glass plate has a pre-drilled hole, and the back cover plate has the inner air inlet. The fixing frame is in the shape of a stepped cylinder. The inner diameter of the outer end of the fixing frame is larger than the diameter of the pre-drilled hole. The outer end of the fixing frame abuts against the back of the glass plate. The outer end of the fixing frame has a decorative ring, which is placed in the pre-drilled hole. The protruding edge of the outer end of the decorative ring abuts against the edge of the pre-drilled hole on the front of the glass plate. The inner end of the decorative ring is inserted into the mounting hole and connected and fixed to the fixing frame. The decorative ring has a movable groove, and a pressing key is movably disposed in the movable groove. The inner end of the pressing key extends through the bottom surface of the movable groove and into the mounting hole. The inner diameter of the inner end of the fixing frame is larger than the diameter of the inner air inlet, and the inner air inlet is located within the contour range of the inner diameter of the inner end of the fixing frame.

[0007] Furthermore, the inner end of the fixing bracket is provided with an abutment part in the mounting hole, and the spring is sleeved on the inner end of the pressing key. The inner end of the spring and the abutment part abut against each other, and the outer end of the spring pushes the pressing key to move outward.

[0008] Furthermore, there are multiple abutting parts that are evenly spaced apart, and there are locking positions between the abutting parts, with the inner end of the pressing button placed in the locking position.

[0009] Furthermore, an outside air inlet is provided on the side of the vacuum cabinet door.

[0010] Furthermore, external air inlets are provided on both sides of the rear cover of the door.

[0011] This utility model features an inlet pressure relief valve that facilitates pressure relief within the vacuum liner of a disinfection cabinet. The overall mechanism of the inlet pressure relief valve operates stably and reliably. The inlet end of the inlet pressure relief valve is concealed on the side of the vacuum cabinet door, resulting in a clean and simple front panel. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the back structure of the vacuum cabinet door in Example 1.

[0013] Figure 2 This is an exploded structural diagram of the vacuum cabinet door in Example 1.

[0014] Figure 3 This is an exploded view of the intake pressure relief valve in Example 1.

[0015] Figure 4 This is a cross-sectional structural diagram of the vacuum cabinet door in Example 1 (in a sealed state).

[0016] Figure 5 This is a cross-sectional structural diagram of the vacuum cabinet door in Example 1 (in the air intake and depressurization state).

[0017] Figure 6 This is a schematic diagram of the structure of the vacuum cabinet door and the disinfection cabinet body in Example 1.

[0018] Figure 7 This is a schematic diagram of the back structure of the disinfection inner liner in Example 1. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example 1, see Figure 1-7As shown, a pressure relief mechanism for a vacuum disinfection cabinet is provided. In this embodiment, the disinfection cabinet includes a cabinet body 1, and the cabinet body 1 has an independent disinfection inner liner and a vacuum inner liner 2. The vacuum inner liner 2 has an open front and a pull-out shelf 3 inside. The pull-out shelf 3 has a vacuum cabinet door 31 with a sealed open front. The vacuum cabinet door 31 is equipped with an air inlet and pressure relief valve 4. The vacuum inner liner 2 is equipped with a vacuum pump 5, a valve, a pressure sensor 7, a magnetic switch 8, and a circuit board 9. The pressure sensor 7 and the magnetic switch 8 are electrically connected to the circuit board 9. The pull-out shelf 3 is equipped with a magnet 30. When the pull-out shelf 3 is pushed back into the vacuum inner liner 2, the vacuum cabinet door 31 seals the vacuum inner liner 2. The magnetic switch 8 senses the magnet 30, and the circuit board 9 controls the vacuum pump 5 to draw out the gas from the vacuum inner liner 2 through the electromagnetic valve. The pressure sensor 7 detects the vacuum degree inside the vacuum inner liner 2.

[0021] In this embodiment, the vacuum pump 5, air valve, air pressure sensor 7, magnetic switch 8, and circuit board 9 are all located on the back of the vacuum liner 2, and the magnet 30 is located on the back of the pull-out shelf 3. An ultraviolet lamp is installed inside the vacuum liner 2.

[0022] The vacuum liner 2 has an air intake hole 21 on its back. The air intake hole 21 and the air valve inlet are connected through a first air pipe 61, and the air valve outlet and the vacuum pump 5 intake are connected through a second air pipe 62. The air valve is a self-holding electromagnetic valve. Under normal conditions, the electromagnetic valve 6 closes the first air pipe 61 and is electrically connected to the circuit board 9. When the vacuum pump 5 enters the working state, the circuit board 9 controls the electromagnetic valve 6 to open, and the gas in the vacuum liner 2 is discharged from the exhaust end of the vacuum pump 5 through the electromagnetic valve 6 and the vacuum pump 5. The vacuum pump 5, electromagnetic valve 6, air pressure sensor 7, and magnetic switch 8 are all prior art, and their specific structures will not be described in detail in this application.

[0023] A pressure sensing hole 22 is provided on the back of the vacuum liner 2. A pressure sensor 7 is mounted on the circuit board 9. The pressure sensor 7 and the pressure sensing hole 22 are connected through a third air pipe 71. The pressure sensor 7 detects whether the vacuum level inside the vacuum liner 2 is between a first preset value and a second preset value. When the vacuum level is lower than the first preset value, the pressure sensor 7 sends a signal to the circuit board 9, and the circuit board 9 controls the vacuum pump 5 to work. When the vacuum level is higher than the second preset value, the pressure sensor 7 sends a signal to the circuit board 9, and the circuit board 9 controls the vacuum pump 5 to stop working. The first preset value and the second preset value are between -45 and -70 kPa. In this embodiment, the first preset value is -45 kPa and the second preset value is -60 kPa.

[0024] The intake and pressure relief valve 4 includes a mounting bracket 41, a push button 42, a spring 43, and a silicone seal 44. The mounting bracket 41 is horizontally installed inside the vacuum cabinet door 31, with its outer end positioned outside the vacuum cabinet door 31. The mounting bracket 41 has a mounting hole 410 inside and an external suction port 411 on its side. An internal air inlet 331 is located inside the vacuum cabinet door 31, communicating with the mounting hole 410. The push button 42 is movably installed within the mounting hole 410, with its inner end connected to the vacuum cabinet door 31. The silicone seal 44 on the inside of the empty cabinet door 31 is connected and fixed (e.g., by screws). The spring 43 is placed in the mounting hole 410. The elastic force of the spring 43 pushes the pressing button 42 to move outward until the silicone seal 44 seals the inner air inlet 331. Pressing the pressing button 42 overcomes the elastic force of the spring 43 and drives the silicone seal 44 to move inward. Gas enters the vacuum liner 2 through the outer air intake 411, the gap between the inner end of the pressing button 42 and the mounting hole 410, and the inner air inlet 331.

[0025] Vacuum cabinet door 31 includes a glass plate 32 and a rear cover plate 33. The glass plate 32 has a pre-drilled hole 321, and the rear cover plate 33 has an internal air inlet 331. The mounting bracket 41 is stepped cylindrical, with the inner diameter of the outer end of the mounting bracket 41 being larger than the diameter of the pre-drilled hole 321. The outer end of the mounting bracket 41 abuts against the back of the glass plate 32. A decorative ring 45 is provided at the outer end of the mounting bracket 41, and the decorative ring 45 is placed inside the pre-drilled hole 321. The protruding edge of the outer end of the decorative ring 45 and the glass plate 32... The edges of the pre-drilled holes 321 on the front abut each other. The inner end of the decorative ring 45 is inserted into the mounting hole 410 and connected and fixed to the fixing bracket 41. The decorative ring 45 has a movable groove 451. The press key 42 is movably disposed in the movable groove 451. The inner end of the press key 42 extends through the bottom surface of the movable groove 451 and into the mounting hole 410. The inner diameter of the inner end of the fixing bracket 41 is larger than the diameter of the inner air inlet 331. The inner air inlet 331 is located within the contour range of the inner diameter of the inner end of the fixing bracket 41. The decorative ring 45 has a clearance notch 452 corresponding to the outer air intake 411. Gas in the vacuum cabinet door 31 enters the mounting hole 410 through the air intake 411 and the clearance notch 452.

[0026] The inner end of the fixing bracket 41 has an abutment part 412 inside the mounting hole 410. The spring 43 is sleeved on the inner end of the press button 42, and the inner end of the spring 43 abuts against the abutment part 412. The outer end of the spring 43 pushes the press button 42 to move outward. There are multiple abutment parts 412, which are evenly spaced. There are locking positions between the abutment parts 412, and the inner end of the press button 42 is placed in the locking positions.

[0027] The vacuum cabinet door 31 has an external air inlet 34 on its side. Specifically, the door rear cover 33 has external air inlets 34 on both sides.

[0028] In this embodiment, during operation, the pull-out shelf 3 is pushed into the vacuum liner 2. The back of the vacuum cabinet door 31 and the open opening are sealed by a door seal. Simultaneously, the magnetic switch 8 senses the magnet 30, and the circuit board 9 controls the vacuum pump 5 to operate and evacuate air. The solenoid valve 6 opens, and the gas in the vacuum liner 2 is discharged from the exhaust end of the vacuum pump 5 through the suction port 21, the first air pipe 61, the solenoid valve 6, and the second air pipe 62 until the pressure sensor 7 detects that the vacuum level inside the vacuum liner 2 has reached the second preset value. At this point, the vacuum pump 5 stops operating, and the solenoid valve 6 closes. If the pressure sensor 7 detects that the vacuum level inside the vacuum liner 2 has dropped below the first preset value, the above evacuation process is repeated to maintain the vacuum level inside the vacuum liner 2 within a certain range.

[0029] When it is necessary to pull out the pull-out shelf 3, press the button 42. The button 42 overcomes the elasticity of the spring 43 and pushes the silicone seal 44 inward, allowing outside air to enter the back cover 33 through the gap between the cabinet door and the cabinet body 1, through the outside air inlet 34 on the side of the back cover 33, and then through the external air intake 411, the gap between the inner end of the button 42 and the mounting hole 410, and the internal air inlet 331 into the vacuum liner 2. The air pressure inside the vacuum liner 2 rises to match the external air pressure, and the shelf 3 can be pulled out to store and retrieve items. At the same time, since the pull-out shelf 3 is pulled out, the magnetic switch 8 can no longer sense the magnet 30, the circuit board 9 controls the vacuum pump 5 to stop working, and the electromagnetic valve 6 closes.

[0030] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0031] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0032] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0033] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A pressure relief mechanism for a vacuum sterilizer, comprising an inlet pressure relief valve disposed on the vacuum cabinet door, characterized in that, The air intake and pressure relief valve includes a mounting bracket, a push button, a spring, and a silicone seal. The mounting bracket is horizontally installed inside the vacuum cabinet door, with its outer end positioned outside the door. The mounting bracket has a mounting hole and an external air intake port on its side. An internal air intake port is located on the inside of the vacuum cabinet door, communicating with the mounting hole. The push button is movably installed within the mounting hole, with its inner end connected and fixed to the silicone seal on the inside of the vacuum cabinet door. The spring is placed within the mounting hole, and its elasticity pushes the push button outward until the silicone seal seals the internal air intake port. When the push button is pressed, it overcomes the spring's elasticity and moves the silicone seal inward. Gas enters the inside of the cabinet door through the external air intake port, the gap between the inner end of the push button and the mounting hole, and the internal air intake port.

2. The pressure relief mechanism for a vacuum sterilizer according to claim 1, characterized in that, The vacuum cabinet door includes a glass panel and a back cover. The glass panel has a pre-drilled hole, and the back cover has an internal air inlet. The mounting bracket is stepped and cylindrical. The inner diameter of the outer end of the mounting bracket is larger than the diameter of the pre-drilled hole. The outer end of the mounting bracket abuts against the back of the glass panel. A decorative ring is provided at the outer end of the mounting bracket. The decorative ring is placed inside the pre-drilled hole. The protruding edge of the outer end of the decorative ring abuts against the edge of the pre-drilled hole on the front of the glass panel. The inner end of the decorative ring is inserted into the mounting hole and connected and fixed to the mounting bracket. The decorative ring has a movable groove. A push button is movably disposed in the movable groove. The inner end of the push button extends through the bottom surface of the movable groove and into the mounting hole. The inner diameter of the inner end of the mounting bracket is larger than the diameter of the internal air inlet. The internal air inlet is located within the contour range of the inner diameter of the inner end of the mounting bracket.

3. The pressure relief mechanism for a vacuum sterilizer according to claim 2, characterized in that, The inner end of the fixing bracket has an abutment part in the mounting hole. The spring is sleeved on the inner end of the pressing key. The inner end of the spring abuts against the abutment part, and the outer end of the spring pushes the pressing key to move outward.

4. The pressure relief mechanism for a vacuum sterilizer according to claim 3, characterized in that, The abutting parts are multiple and evenly spaced, with locking positions between them, and the inner end of the pressing button is placed in the locking position.

5. The pressure relief mechanism for a vacuum sterilizer according to claim 1, characterized in that, The vacuum cabinet door has an outside air inlet on the side.

6. The pressure relief mechanism for a vacuum sterilizer according to claim 2, characterized in that, External air inlets are located on both sides of the rear cover of the door.

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