voltage stabilizing device

Abstract

A pressure stabilizing device includes a pressure regulator comprising a valve body, a pressure regulating component, and a switching component. The valve body has an inlet, a pressure reducing chamber, and an outlet. The inlet has an inlet port for connecting to the outlet of a portable gas canister. The pressure reducing chamber is connected to the inlet. The outlet is connected to the pressure reducing chamber and has an outlet port. The pressure regulating component is disposed in the pressure reducing chamber and regulates the gas pressure output from the portable gas canister to form an output gas with a predetermined pressure. The switching component is disposed in the outlet and located between the pressure reducing chamber and the outlet port, and can be controlled to block or open the output gas. This allows for the adjustment of the gas pressure output from the portable gas canister.

Description

Technical Field

[0001] This invention relates to gas cylinders; in particular, it refers to a pressure stabilizing device for gas cylinders. Background Technology

[0002] With the rise in popularity of outdoor recreational activities, camping or hiking in the wild has become a popular way for people to escape the hustle and bustle of city life. Cooking is often necessary during outdoor activities, so a variety of outdoor gas stoves are available for selection. These stoves use bottled gas, typically camping gas canisters.

[0003] Mountaineering gas canisters are filled with high-pressure liquid gas. A needle valve is typically installed at the gas outlet of the canister, and this valve is connected to the burner of a gas stove via a gas pipe. The needle valve adjusts the gas output, allowing a small amount of high-pressure gas to be released from the canister.

[0004] However, if the needle valve malfunctions, the high-pressure gas inside the mountaineering gas canister may be ejected in large quantities, leading to a large gas leak and even the risk of ignition.

[0005] Therefore, the method of adjusting the gas output of mountaineering gas canisters using needle valves is not yet perfect and needs further improvement. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a pressure stabilizing device that can adjust the pressure of gas output from a portable gas canister.

[0007] To achieve the above objectives, the present invention provides a pressure stabilizing device for connecting to an outlet of a portable gas canister. The pressure stabilizing device includes a pressure regulator, which comprises a valve body, a pressure regulating component, and a switching component. The valve body has an inlet, a pressure reducing chamber, and an outlet. The inlet has an inlet port for connecting to the outlet of the portable gas canister. The pressure reducing chamber is connected to the inlet. The outlet is connected to the pressure reducing chamber and has an outlet port. The pressure regulating component is disposed in the pressure reducing chamber and regulates the gas pressure output from the portable gas canister to form an output gas with a predetermined pressure. The switching component is disposed in the outlet and located between the pressure reducing chamber and the outlet port, and the switching component can be controlled to block or open the output gas.

[0008] The advantage of this invention is that the pressure regulator can reduce and regulate the pressure of the gas output from the portable gas canister, thereby outputting gas at a stable predetermined pressure. The switching component within the pressure regulator can control the on / off operation of the gas output for user convenience. Attached Figure Description

[0009] Figure 1 This is a perspective view of a voltage stabilizing device according to a preferred embodiment of the present invention.

[0010] Figure 2 This is an exploded perspective view of the voltage stabilizing device according to the preferred embodiment of the present invention.

[0011] Figure 3 This is another exploded perspective view of the voltage stabilizing device according to the preferred embodiment of the present invention.

[0012] Figure 4 This is an exploded perspective view of the upper cover and voltage regulator of the preferred embodiment of the present invention.

[0013] Figure 5 This is a perspective view of the voltage regulator of the preferred embodiment of the present invention.

[0014] Figure 6 This is an exploded perspective view of the voltage regulator of the preferred embodiment of the present invention.

[0015] Figure 7 This is a front view of the voltage regulator according to the preferred embodiment of the present invention.

[0016] Figure 8 This is another exploded perspective view of the voltage regulator of the preferred embodiment of the present invention.

[0017] Figure 9 This is a top view of the voltage regulator according to the preferred embodiment of the present invention.

[0018] Figure 10 for Figure 9 A sectional view along the 10-10 direction.

[0019] Figure 11 for Figure 9 Sectional view in direction 11-11.

[0020] Figure 12 for Figure 5 Sectional view in direction 12-12.

[0021] Figure 13 This is a perspective view of the control component of the preferred embodiment of the present invention.

[0022] Figure 14 for Figure 13 Sectional view in direction 14-14.

[0023] Figure 15 for Figure 1 Sectional view in direction 15-15.

[0024] Figure 16 This is a schematic diagram showing how the control component drives the gate to open the side opening. Detailed Implementation

[0025] To more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figures 1 to 16 As shown, this is a pressure stabilizing device 1 according to a preferred embodiment of the present invention. The pressure stabilizing device includes at least one pressure regulator 10, which is connected to an outlet 100a of the portable gas canister 100. The portable gas canister 100 is exemplified by a camping gas canister, and is filled with high-pressure liquid gas. The pressure regulator 10 is used to regulate the pressure of the gas output from the portable gas canister 100.

[0026] Please cooperate. Figure 2 and Figure 3 In this embodiment, the pressure stabilizing device 1 further includes a container 60 and a top cover 62, the container 60 having an upper opening 602. The container 60 is used to contain the portable gas canister 100, and the top of the portable gas canister 100 is located at the upper opening 602. The inner wall surface of the container 60 has a plurality of protrusions 604, which are located around the upper opening 602.

[0027] The upper cover 62 is detachably attached to the container 60 and closes the upper opening 602. In this embodiment, the outer peripheral surface of the bottom of the upper cover 62 is provided with multiple slots 622, and the multiple protrusions 604 of the container 60 respectively engage with the slots 622, thereby connecting the upper cover 62 to the container 60. The upper cover includes a cover body 64 and a bottom plate 66, with an accommodating space between the cover body 64 and the bottom plate 66. The cover body 64 has a first opening 642 and a second opening 644. The first opening 642 is located on the side of the cover body 64, and the second opening 644 is located on the top of the cover body 64. The first opening 642 and the second opening 644 respectively communicate with the accommodating space. The upper cover 62 may optionally be provided with a hanging member 68 for the user to lift or suspend the pressure stabilizing device 1.

[0028] The voltage regulator 10 is disposed in the accommodating space of the upper cover 62. The voltage regulator 10 includes a valve body 12, a pressure regulating component 32 and a switching component 42, wherein the valve body 12 has an air inlet 14, a pressure reducing chamber 16 and an air outlet 18.

[0029] The air inlet 14 has an air inlet port 142 at one end, which is used to connect to the air outlet 100a of the portable gas canister 100. The inner wall of the air inlet port 142 has an internal thread for screwing into the external thread surrounding the air outlet 100a of the portable gas canister 100. Figure 10As shown, the air inlet 14 has an air inlet channel 144 that extends along an axial direction and one end of the air inlet channel 144 is connected to the air inlet port 142.

[0030] In this embodiment, a pressure gauge 65 is provided at the top of the air inlet 14, and the other end of the air inlet channel 144 extends to the top of the air inlet 14. The pressure gauge 65 communicates with the other end of the air inlet channel 144 to measure the pressure in the air inlet channel 144, that is, the pressure gauge 65 can measure the pressure of the gas in the portable gas canister 100. The pressure gauge 65 is located in the second opening 644 of the upper cover 62 so that the user can view the pressure indicated by the pressure gauge 65. The pressure gauge 65 can be an analog or digital pressure gauge.

[0031] The pressure-reducing chamber 16 is located on one side of the air inlet 14, and the pressure-reducing chamber 16 has a valve port 162 (see reference). Figure 10 The pressure reducing chamber 16 is connected to the air inlet passage 144 of the air inlet section 14 via the valve port 162.

[0032] Please cooperate. Figure 10 and Figure 11As shown, the pressure regulating component 32 is disposed in the pressure reducing chamber 16. The pressure regulating component 32 regulates the gas pressure output by the portable gas canister 100 to reduce and stabilize the output gas to a predetermined pressure, such as 280 mm / H2O. In this embodiment, the pressure regulating component 32 includes a diaphragm 34, a spring 36, a moving member 38, and a shielding member 40. The diaphragm 34 divides the pressure reducing chamber into a first gas chamber 16a and a second gas chamber 16b. The first gas chamber 16a is connected to the air inlet channel 144 via the valve port 162, and the first gas chamber 16a is also connected to the air outlet 18. The spring 36 is located in the second gas chamber 16b and abuts against the valve body 12 and the diaphragm 34. The movable member 38 is connected to the diaphragm 34. The shielding member 40 is pivotally connected to the valve body 12 and connected to the movable member 38. The shielding member 40 has a shielding portion 402 located at a position corresponding to the valve port 162. Therefore, when the gas pressure inside the portable gas canister 100 is sufficient, the diaphragm 34 is pushed towards the spring 36, causing the shielding portion 402 of the shielding member 40 to partially open the valve port 162, thereby reducing the pressure in the first gas chamber 16a and generating the predetermined pressure of output gas. As the pressure of the gas inside the portable gas canister 100 decreases, the pressure in the first gas chamber 16a decreases accordingly, causing the spring 36 to push the diaphragm 34 toward the valve port 162, which in turn causes the shielding part 402 of the shielding member to gradually move away from the valve port, thereby increasing the opening degree of the valve port 162 and maintaining the pressure in the first gas chamber 16a at a stable predetermined pressure.

[0033] The air outlet 18 is located on one side of the pressure reducing chamber 16 and is connected to the first air chamber 16a of the pressure reducing chamber 16. The air outlet 18 has an air outlet port, and the air outlet port 182 corresponds to the first opening 642 of the upper cover 62.

[0034] The switch assembly 42 is disposed in the gas outlet 18 and located between the pressure reducing chamber 16 and the gas outlet 182. The switch assembly 42 can be controlled to block or open the output gas.

[0035] For more details, please cooperate. Figure 11 and Figure 12The air outlet 18 has a receiving hole 20, which has a first hole segment 22, a second hole segment 24, and a third hole segment 26 connected sequentially along its axial direction. The air outlet 182 is located in the first hole segment 22, which has a connecting channel 222. The second hole segment 24 is located between the first hole segment 22 and the third hole segment 26. The wall of the second hole segment 24 is conical, and the diameter of the second hole segment 24 gradually decreases from the first hole segment 22 towards the third hole segment 26. The second hole segment 24 forms a chamber, and one side opening 242 of the wall of the second hole segment 24 communicates with the pressure reducing chamber 16. The third hole segment 26 has a shoulder 262 at the connection point with the second hole segment 24. The inner wall of the connecting channel 222 (i.e., the hole wall of the first segment) has a positioning ring groove 222a, and one end of the air outlet 182 has at least one notch 182a. In this embodiment, there are two notches 182a that communicate with the positioning ring groove 222a. The positioning ring groove 222a has a groove wall 222b, which faces the second hole segment 24.

[0036] Additionally, the air outlet 18 has a limiting groove 28, which is located radially around and communicates with the third hole segment 26. The groove wall of the limiting groove 28 forms a first stop 282 and a second stop 284 (see reference). Figure 8 In this embodiment, the air outlet 18 is an open end 18a on the periphery of the third hole section 26, and can be connected to the periphery of the third hole section 26 by a rear cover 30 in a threaded manner to close the open end 18a.

[0037] The switch assembly 42 includes a stopper 44 having an axially opposed first end 442 and a second end 444. At least a portion of the stopper 44 is located in the second bore section 24 of the receiving bore 20. The stopper 44 has a shaft hole 46 and a radially oriented vent hole 48. The shaft hole 46 communicates with the vent hole 48 and the vent interface 182. More specifically, the stopper 44 includes a drive section 50, a tapered section 52, and an extension section 54. The drive section 50 has the first end 442. The tapered section 52 connects the drive section 50 and the extension section 54, and the drive section 50 is located in the first bore section 22. The tapered section 52 is located in the second bore section 24, and the outer peripheral surface of the tapered section 52 mates with the bore wall of the second bore section 24. The extension section 54 is located in the third bore section 26, and the extension section 54 has the second end 444.

[0038] The shaft hole 46 has an open side 462 and a closed side 464. The open side 462 is formed at the first end 442, and the closed side 464 is located on the tapered section 52 and between the first end 442 and the second end 444. The vent hole 48 is located on the tapered section 52.

[0039] The first end 442 has at least one groove 442a. In this embodiment, there are two grooves 442a located on opposite sides of the radial periphery of the shaft hole 46. The positioning ring groove 222a of the air outlet 182 surrounds the radial periphery of the two grooves 442a.

[0040] The switch assembly 42 further includes an elastic member 56. One end of the elastic member 56 abuts against the shoulder 262, and the other end provides a force to the extension section 54 in a direction away from the shoulder 262, so that the outer peripheral surface of the tapered section 52 can tightly abut against the hole wall of the second hole section 24. In this embodiment, the switch assembly 42 includes a stop member, such as a stop rod 58, which is disposed in the extension section of the stop 44 and extends radially outward from the extension section 54. The other end of the elastic member 56 abuts against the stop rod 58. The elastic member 56 includes two baffles 562 and a spring 564. The two baffles 562 and the spring 564 are sleeved on the extension section 54, and the spring 564 abuts between the two baffles 562. One of the baffles 562 constitutes one end of the elastic member 56 and abuts against the shoulder, and the other baffle 562 constitutes the other end of the elastic member 56 and abuts against the stop rod 58. One end of the stop bar 58 extends into the limiting groove 28 and is located between the first stop 282 and the second stop 284 to limit the rotation angle of the stop 44.

[0041] Please cooperate. Figure 11 , Figure 15 and Figure 16 The closed element 44 can be manipulated to rotate along its axial direction between a first position P1 and a second position P2. For example... Figure 15 As shown, in the first position P1, the outer peripheral surface of the conical segment 52 of the shut-off element 44 closes the side opening 242 to block the output gas, and the grooves 442a on the first end 442 of each shut-off element 44 and the notches 182a of the gas outlet 182 are located on the same reference plane (refer to...). Figure 7 The stop bar 58 abuts against the first stop portion 282. For example... Figure 16 As shown, in the second position P2, the vent 48 communicates with the side opening 242 to open the output gas, so that the output gas can be output from the gas outlet 182, and the baffle 58 abuts against the second baffle 284.

[0042] To facilitate operation of the shut-off element 44, in this embodiment, the pressure stabilizing device 1 further includes a control element 70. The control element 70 has a connecting end 702 and an internal gas supply channel 72. One end of the gas supply channel 72 forms an inlet 722 at the connecting end 702, and the other end of the gas supply channel 72 is connected to a gas pipe 200, which can be a flexible hose and connected to a gas appliance. The control element 70 is detachably connected to the gas outlet 182 via the connecting end 702, and the connecting end 702 is connected to the shut-off element 44, with the gas supply channel 72 communicating with the shaft hole 46. The control element 70 drives the shut-off element to rotate between the first position P1 and the second position P2.

[0043] For more details, please cooperate. Figures 13 to 16 The connecting end 702 of the control element 70 is provided with at least one positioning pin 74. In this embodiment, there are two positioning pins 74. When the closure element 44 is located in the first position P1, each positioning pin 74 can enter the positioning ring groove 222a through each notch 182a of the air outlet 182, and each positioning pin 74 can also enter each groove 442a of the closure element 44.

[0044] In this embodiment, the positioning pins 74 are arranged radially along the connecting end 702. Each positioning pin 74 has an outer end 742 and an inner end 744. The outer end 742 protrudes from the radial periphery of the connecting end 702, and the inner end 744 extends into the air supply passage 72. A sealing plate 76 is provided in the air supply passage 72, and the sealing plate 76 has a through hole 762 communicating with the air supply passage 72.

[0045] When the closure element 44 is located in the first position P1 and the connecting end 702 is connected to the closure element 44, the outer ends 742 of each positioning pin 74 enter the positioning ring groove 222a through each notch 182a, and the inner ends 744 of each positioning pin 74 extend into each cut groove 442a. The first end 442 of the closure element 44 is located in the air passage 72 and abuts against the sealing plate 76, and the open side 462 of the shaft hole 46 communicates with the through hole 762 and the air passage 72. When the user rotates the control member 70, the inner ends 744 of each positioning pin 74 push against the groove wall of each cut groove 442a, thereby driving the closure element 44 to rotate axially to the second position P2. During rotation, when the outer ends 742 of each positioning pin 74 leave the projection range of each notch 182a, the groove wall 222b of the positioning ring groove 222a restricts the outer ends 742 of each positioning pin 74 within the positioning ring groove 222a (e.g., Figure 16(Indicated by the dashed line in the middle), thereby, when the shut-off element 44 is rotated from the first position P1 to the second position P2, the positioning ring groove 222a will restrict the control member 70 from disengaging, and the first end 442 of the shut-off element 44 will stably abut against the sealing plate 76. Therefore, the output gas output from the shaft hole 46 of the shut-off element 44 can enter the gas supply passage 72 of the control member 70 and be transmitted to the gas pipe 200.

[0046] When the user is not using gas, the control component 70 can be rotated in reverse to turn the shut-off valve 44 back to the first position P1, thereby blocking the gas supply. The control component 70 can also be removed from the gas outlet 182 of the valve body 12, allowing the pressure stabilizing device 1 and the portable gas canister 100 to be moved freely.

[0047] As described above, when the pressure regulator 10 of the present invention is connected to the portable gas canister 100, it can reduce and regulate the pressure of the gas output from the portable gas canister 100, thereby outputting stable gas at a predetermined pressure. The switch assembly 42 in the pressure regulator 10 can control the opening and closing of the gas output for user convenience. More notably, the control member 70 can rotate the stop valve 44, allowing the output gas to be transmitted to the gas pipe 200 via the gas delivery channel 72 inside the control member 70, making it more convenient to access the output gas. Since the stop valve 44 is inside the valve body 12, there is no risk of accidental contact with the stop valve 44 causing leakage of the output gas from the outlet 182. The top cover 62 and the container 60 protect the pressure regulator 10 and the portable gas canister 100 from impacts.

[0048] In one embodiment, it is also possible to directly connect the voltage regulator 10 to the portable gas canister 100 without setting the top cover 62 and the container 60.

[0049] In one embodiment, the gas pipe 200 can also be fixedly connected to the gas outlet 182 of the gas outlet section 18, and by providing a control element (e.g., a knob) on the extension section 54 of the shut-off valve 44, the shut-off valve 44 can be rotated between the first position P1 and the second position P2 by the connected control element.

[0050] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the claims should be included within the patent scope of the present invention.

[0051] Explanation of reference numerals in the attached figures

[0052] [This invention]

[0053] 1: Voltage stabilizing device

[0054] 10: Voltage regulator

[0055] 12: Valve body

[0056] 14: Air intake section

[0057] 142: Air intake interface

[0058] 144: Air Intake Channel

[0059] 16: Decompression Chamber

[0060] 16a: First air chamber

[0061] 16b: Second air chamber

[0062] 162: Valve port

[0063] 18: Vent section

[0064] 18a: Open End

[0065] 182: Vent inlet

[0066] 182a: Gap

[0067] 20: Receiving hole

[0068] 22: First hole segment

[0069] 222: Connection Channel

[0070] 222a: Positioning ring groove

[0071] 222b: Tank wall

[0072] 24: Second hole section

[0073] 242: Side opening

[0074] 26: Third hole section

[0075] 262: Shoulders

[0076] 28: Limiting groove

[0077] 282: First Block

[0078] 284: Second Gear

[0079] 30: Back cover

[0080] 32: Pressure regulating component

[0081] 34: Membrane

[0082] 36: Spring

[0083] 38: Moving parts

[0084] 40: Shielding component

[0085] 402: Shielding area

[0086] 42: Switch assembly

[0087] 44: closed child

[0088] 442: First end

[0089] 442a: Groove

[0090] 444: Second end

[0091] 46: Shaft hole

[0092] 462: Open side

[0093] 464: Closed side

[0094] 48: Vent hole

[0095] 50: Drive segment

[0096] 52: Conical segment

[0097] 54: Extension Section

[0098] 56: Elastic component

[0099] 562: Baffle

[0100] 564: Spring

[0101] 58: Bar

[0102] 60: Container

[0103] 602: Open at the top

[0104] 604: convex part

[0105] 62: Top cover

[0106] 622: Card slot

[0107] 64: Cover

[0108] 642: First Opening

[0109] 644: Second opening

[0110] 65: Pressure gauge

[0111] 66: Base Plate

[0112] 68: Hanging ornaments

[0113] 70: Control components

[0114] 702: Connection end

[0115] 72: Gas delivery duct

[0116] 722: Entrance

[0117] 74: Positioning pin

[0118] 742: Outer End

[0119] 744: Inner End

[0120] 76: Sealing plate

[0121] 762: Through hole

[0122] 100: Portable gas canisters

[0123] 100a: Air outlet

[0124] 200: Gas pipe

[0125] P1: First position

[0126] P2: Second position

Claims

1. A pressure stabilizing device for connecting to an outlet of a portable gas cylinder, the pressure stabilizing device comprising: A voltage regulator includes a valve body, a pressure regulating assembly, and a switching assembly; wherein, The valve body has an air inlet, a pressure reducing chamber, and an air outlet. The air inlet has an air inlet port for connecting to the air outlet of the portable gas canister. The pressure reducing chamber is connected to the air inlet. The air outlet is connected to the pressure reducing chamber and has an air outlet port. The pressure regulating component is disposed in the pressure reducing chamber, and the pressure regulating component regulates the gas pressure output by the portable gas canister to form an output gas with a predetermined pressure. The switch assembly is disposed in the gas outlet and located between the pressure reducing chamber and the gas outlet interface. The switch assembly can be controlled to block or open the output gas. The gas outlet has a chamber, and the wall of the chamber has a side opening that connects to the pressure reducing chamber. The switch assembly includes a shut-off element located in the chamber. The shut-off element has a shaft hole and a vent hole located in the radial direction. The shaft hole communicates with the vent hole and the gas outlet. The shut-off element is rotatable along its axial direction between a first position and a second position. In the first position, the outer peripheral surface of the shut-off element closes the side opening. In the second position, the vent hole communicates with the side opening. A control member has a connecting end and an internal gas supply channel. One end of the gas supply channel forms an inlet at the connecting end, and the other end of the gas supply channel is connected to a gas pipe. The control member is detachably connected to the gas outlet via the connecting end, and the connecting end is connected to the shut-off element, and the gas supply channel communicates with the shaft hole. The control member drives the shut-off element to rotate between the first position and the second position.

2. The voltage stabilizing device as described in claim 1, wherein, The device includes a container and a top cover, wherein the container is for holding the portable gas canister and has an upper opening; the top cover is detachably attached to the container and closes the upper opening; the top cover has a receiving space and a first opening, the first opening communicating with the receiving space; a voltage regulator is disposed in the receiving space of the top cover, and the gas outlet corresponds to the first opening.

3. The voltage stabilizing device as described in claim 2, wherein, It includes a hanging component connected to the upper cover.

4. The voltage stabilizing device as described in claim 2, wherein, The air inlet has an air inlet channel that extends along an axial direction and one end of the air inlet channel is connected to the air inlet port; a pressure gauge is attached to the air inlet of the valve body and connected to the other end of the air inlet channel; the upper cover has a second opening that communicates with the accommodating space and the pressure gauge is located in the second opening.

5. The voltage stabilizing device as described in claim 1, wherein, The connecting end of the control component is provided with at least one positioning pin; the air outlet of the valve body has a connecting channel, the inner wall of the connecting channel has a positioning ring groove, and one end of the air outlet has at least one notch, the at least one notch communicating with the positioning ring groove; the at least one positioning pin enters the positioning ring groove through the at least one notch.

6. The voltage stabilizing device as described in claim 5, wherein, The closure element has a first end and a second end opposite each other in its axial direction. The shaft hole has an open side and a closed side. The open side is formed at the first end, and the closed side is located between the first end and the second end. The first end has at least one groove, and the positioning ring groove surrounds the radial periphery of the at least one groove. When the closure element is in the first position, the at least one positioning pin can enter the at least one groove through the at least one notch and can drive the closure element to rotate axially to the second position.

7. The voltage stabilizing device as described in claim 6, wherein, The at least one positioning pin is arranged radially along the connecting end, and the at least one positioning pin has an outer end and an inner end. The outer end protrudes from the radial periphery of the connecting end, and the inner end extends into the air supply passage. When the connecting end is connected to the closure element, the first end of the closure element is located in the air supply passage, and the inner end of the at least one positioning pin extends into the at least one groove, and the outer end of the at least one positioning pin extends into the positioning ring groove.

8. The voltage stabilizing device as described in claim 7, wherein, A sealing plate is provided in the gas supply channel. The sealing plate has a through hole that communicates with the gas supply channel. When the connecting end is connected to the occluder, the first end of the occluder abuts against the sealing plate, and the open side of the shaft hole communicates with the through hole.

9. The voltage stabilizing device as described in claim 6, wherein, When the at least one positioning pin drives the closure element to rotate along its axial direction to the second position, the groove wall of the positioning ring groove restricts the at least one positioning pin within the positioning ring groove.

10. The voltage stabilizing device as described in claim 5, wherein, The vent has a receiving hole, which has a first segment, a second segment, and a third segment. The first segment has the connecting channel. The second segment is located between the first segment and the third segment. The wall of the second segment is conical and forms the receiving chamber. The diameter of the second segment gradually decreases from the first segment to the third segment. The third segment has a shoulder at the connection with the second segment. The closure includes a conical segment and an extension segment. The outer peripheral surface of the conical segment mates with the wall of the second segment. The vent is located on the conical segment. The extension segment is connected to the conical segment and located in the third segment of the receiving hole. The switch assembly includes an elastic element. One end of the elastic element abuts against the shoulder, and the other end provides a force to the extension segment in a direction away from the shoulder, so that the outer peripheral surface of the conical segment abuts against the wall of the second segment.

11. The voltage stabilizing device as claimed in claim 10, wherein, The switch assembly includes a stop member disposed on an extension of the closure element, and the other end of the elastic member abuts against the stop member.

12. The voltage stabilizing device as claimed in claim 11, wherein, The elastic element includes two baffles and a spring. The two baffles are fitted onto the extension, with one baffle abutting against the shoulder and the other baffle abutting against the stop. The spring is fitted onto the extension and located between the two baffles.

13. The voltage stabilizing device as described in claim 11, wherein, The valve body has a limiting groove at its outlet, which is connected to the third section of the receiving hole. The limiting groove has a first stop and a second stop, and the stop extends into the limiting groove. When the valve body is rotated to the first position, the stop abuts against the first stop. When the valve body is rotated to the second position, the stop abuts against the second stop.

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