Pressure relief device

Abstract

Pressure relief device comprising the following: a valve base (80) comprising a pressure chamber (800) and an exhaust chamber (802), wherein the upper and lower surfaces of the pressure chamber (800) have a passage (8002) or a first valve opening (8000), wherein the valve base (80) further comprises a valve opening channel (804) connected to the pressure chamber (800) through the first valve opening (8000), and a lower surface of the exhaust chamber (802) comprising a second valve opening (8020); a first valve (12a) which is arranged in the pressure chamber (800) and at least partially covers the first valve opening (8000) to form a pressure relief gap (8004); a flexible element (84) arranged at the valve base (80) and comprising a pressure relief valve (840) and a first exhaust port (842), wherein the pressure relief valve (840) covers the passage (8002), the first exhaust port (842) being connected to the exhaust chamber (802); and an upper cover (16) arranged on the flexible element (84) and having a first pressure relief opening (160) and a second vent opening (162), wherein the first pressure relief opening (160) faces the pressure relief valve (840), wherein the second vent opening (162) is connected to the first vent opening (842), wherein the pressure relief valve (840) is designed to deform due to the action of an atmosphere in the pressure chamber (800) in order to selectively close the first pressure relief opening (160) or to open the first pressure relief opening (160) to form a second vent channel (144c) between the upper cover (16) and the flexible element (84), and the second vent channel (144c) is connected to the first pressure relief opening (160) and the second vent opening (162), characterized by the fact that at least one first exhaust gas channel (144g) is formed at the valve base (80) and spaced apart from the pressure chamber (800) and connects the valve opening channel (804) to the outside of the valve base (80).

Description

GENERAL STATE OF THE ART Field of invention

[0001] The present invention relates to a pressure relief device. Description of the state of the art

[0002] When a pump requires pressure reduction after a pressure increase, current practice involves combining the pump with a solenoid valve and using the solenoid valve for pressure relief. However, this approach incurs the additional cost of the solenoid valve. Furthermore, if the solenoid valve is damaged, the entire pressure reduction device becomes inoperable and must be replaced, resulting in further costs. Therefore, an engineering challenge is to find a way to reduce the cost of replacing the pressure reduction valve element by enabling automatic and rapid pressure reduction in a device after inflation.

[0003] DE 10 2013 021 913 A1 describes an automatic pressure release pump comprising a compressed air generation unit and an airflow control unit. The compressed air generation unit includes a first air inlet hole. Compressed air generated by the compressed air generation unit drives the airflow control unit to draw in or expel air streams through the first air inlet hole. The airflow control unit further comprises a valve base, a first valve, a second valve, a top cover, and an elastic element arranged between the valve base and the top cover. The elastic element allows pressure to be released through a pressure release port to depressurize an inflatable object when the compressed air generation unit is switched off. BRIEF SUMMARY OF THE INVENTION

[0004] To solve the problems of the prior art, the present invention provides a pressure relief device.

[0005] The pressure relief device according to the invention comprises the features of claim 1. Further embodiments of the pressure relief device according to the invention are the subject of the dependent claims. The pressure relief device comprises a valve base, a first valve, a flexible element, and an upper cover. The valve base has a pressure chamber and an exhaust chamber. The upper and lower surfaces of the pressure chamber have a passage or a first valve opening, respectively. The valve base further has a valve opening channel that is connected to the pressure chamber via the first valve opening. A lower surface of the exhaust chamber has a second valve opening. A first exhaust channel is formed at least on the valve base and connects the valve opening channel to the exterior of the valve base. The first valve is located in the pressure chamber and at least partially covers the first valve opening to form a pressure relief gap.The flexible element is located at the base of the valve and has a pressure relief valve and a first venting port. The pressure relief valve covers the passage. The first venting port is connected to the venting chamber. The upper cover is located on the flexible element and has a first pressure relief port and a second venting port. The first pressure relief port faces the pressure relief valve. The second venting port is connected to the first venting port. The pressure relief valve is designed to deform due to the action of an atmosphere in the pressure chamber, selectively closing or opening the first pressure relief port to form a second venting channel between the upper cover and the flexible element. The second venting channel is connected to both the first and second venting ports.

[0006] In some embodiments of the present disclosure, the pressure relief device further includes a second valve located in the outgassing chamber and covering the second valve opening.

[0007] In some embodiments of the present disclosure, the cross-sectional area of ​​the first outgassing channel is in the range of 1×10 -3 mm 2 up to 1 mm 2 .

[0008] In some embodiments of the present disclosure, the flexible element has a first incision, the valve base has a second incision, and the first incision and the second incision form the first outgassing channel.

[0009] In some embodiments of the present disclosure, the first outgassing channel penetrates the flexible element.

[0010] In some embodiments of the present disclosure, the valve base has a third outgassing channel that connects the pressure chamber to the outside of the valve base.

[0011] In some embodiments of the present disclosure, the valve base has a third exhaust channel that connects the pressure chamber to the exhaust chamber.

[0012] In some embodiments of the present disclosure, the sum of a cross-sectional area of ​​the first exhaust channel and a cross-sectional area of ​​the third exhaust channel is in a range of 1×10 -3 mm 2 up to 1 mm 2 .

[0013] In some embodiments of the present disclosure, the pressure relief valve has an annular groove or a cross-shaped groove.

[0014] According to the structural arrangement described above, the pressure relief device of the present disclosure includes the pressure relief valve. The first venting channel is formed at least at the pressure relief valve. Furthermore, the first venting channel can also be formed at least at the valve base to connect the valve opening channel with the exterior of the valve base. The first venting channel can connect the pressure chamber with the exterior of the valve base, thereby accelerating the return velocity of the pressure relief valve during the pressure relief period. The pressure relief valve thus exits the first pressure relief opening quickly and automatically, leading to the formation of the second venting channel between the upper cover and the flexible element. This venting channel connects the first pressure relief opening with the second venting opening, resulting in faster pressure relief efficiency for the pressure relief device.Furthermore, the outgassing channel is integrated into the flexible element, allowing it to be formed using processes such as injection molding or thermoforming, thus reducing production costs. Additionally, users can produce several different types of outgassing channels or recesses because the flexible element is designed for easier shaping. Moreover, users can replace the flexible element with the appropriate type of outgassing channel or recess to suit their specific requirements, enabling quick and cost-effective replacement.

[0015] The foregoing outlines the features of several embodiments so that persons skilled in the art may better understand the aspects of this disclosure. Persons skilled in the art should recognize that they can readily use this disclosure as a basis for designing or modifying other processes and structures to achieve the same purposes and / or obtain the same advantages as the embodiments presented herein. Persons skilled in the art should also recognize that such equivalent entities do not deviate from the meaning and scope of this disclosure and that they can make various exchanges, substitutions, and modifications therein without deviating from the meaning and scope of this disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Aspects of this disclosure are best understood with reference to the following detailed description in conjunction with the accompanying figures. It should be noted that, in accordance with industry practice, various features are not drawn to scale. In fact, the dimensions of the various features may be enlarged or reduced as desired for clarity. Fig. Figure 1A is a schematic cross-sectional view of a pressure relief device in an outgassing state, which is not the subject of the invention, but is helpful to explain the invention. Fig. Figure 1B is a schematic cross-sectional view of the pressure relief device in a relaxed outgassing state, which is not part of the invention, but is helpful to explain the invention. Fig. Figure 2A is a schematic cross-sectional view of a pressure relief device in a degassing state, which is not part of the invention, but is helpful to explain the invention. Fig. Figure 2B is a schematic cross-sectional view of the pressure relief device in a relaxed outgassing state, which is not part of the invention but is helpful for explaining the invention. Fig. Figure 3A is a schematic cross-sectional view of a pressure relief device in a degassing state, which is not part of the invention, but is helpful to explain the invention. Fig. Figure 3B is a schematic cross-sectional view of the pressure relief device in a relaxed outgassing state, which is not part of the invention but is helpful for explaining the invention. Fig. Figure 4A is a schematic cross-sectional view of a pressure relief device in a degassing state, which is not part of the invention but is helpful for explaining the invention. Fig. Figure 4B is a schematic cross-sectional view of the pressure relief device in a relaxed outgassing state, which is not part of the invention but is helpful for explaining the invention. Fig. Figure 5A is a schematic cross-sectional view of a pressure relief device in an outgassing state, which is not part of the invention, but is helpful to explain the invention. Fig. Figure 5B is a schematic cross-sectional view of the pressure relief device in a relaxed outgassing state, which is not part of the invention but is helpful for explaining the invention. Fig. 6A is a schematic cross-sectional view of an embodiment of the pressure relief device according to the invention in a degassing state. Fig. Figure 6B is a schematic cross-sectional view of the embodiment of the pressure relief device according to the invention in a relaxed outgassing state. Fig. Figure 7A is a schematic underside view of a flexible element according to an embodiment of the invention. Fig. Figure 7B is a schematic underside view of another flexible element according to an embodiment of the invention. DETAILED DESCRIPTION

[0017] The following discloses features of several embodiments so that persons with expertise may better understand the aspects of the present disclosure.

[0018] It will be on Fig. 1A and Fig. 1B is referenced. Fig. Figure 1A is a schematic cross-sectional view of a pressure relief device 1 in a degassing state. Fig. Figure 1B shows a schematic cross-sectional view of the pressure relief device 1 in a relaxed outgassing state. As initially shown in the figures, the pressure relief device 1 comprises a valve base 10, a first valve 12a, a second valve 12b, a flexible element 14, and a top cover 16. The structure and function of the elements and the relationship between them are described in detail below.

[0019] The valve base 10 has a pressure chamber 100 and an exhaust chamber 102. The upper and lower surfaces of the pressure chamber 100 have a passage 1002 and a first valve opening 1000, respectively, and the lower surface of the exhaust chamber 102 has a second valve opening 1020. The first valve 12a is located in the pressure chamber 100 and covers the first valve opening 1000. The second valve 12b is located in the exhaust chamber 102 and covers the second valve opening 1020. The flexible element 14 is arranged on the valve base 10 and has a pressure relief valve 140 and a first exhaust opening 142. The pressure relief valve 140 covers the passage 1002. The first exhaust opening 142 is connected to the exhaust chamber 102. A first outgassing channel 144a is formed at least on the flexible element 14 and connects the pressure chamber 100 with the outside of the valve base 10.The upper cover 16 is arranged on the flexible element 14 and has a first pressure relief opening 160 and a second venting opening 162. The first pressure relief opening 160 faces the pressure relief valve 140. The second venting opening 162 is connected to the first venting opening 142.

[0020] In particular, as in Fig. Figure 1A shows that when the user drives the pressure relief device 1 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 1 through the first valve opening 1000 and the second valve opening 1020. The gas entering the pressure relief device 1 through the first valve opening 1000 creates pressure and pushes the pressure relief valve 140 along a direction 20a, and therefore the pressure relief valve 140 deforms to close the first pressure relief opening 160, preventing the first pressure relief opening 160, located between the valve base 10 and the upper cover 16, from communicating with the exhaust chamber 102 and the second exhaust opening 162.Therefore, the gas entering the exhaust chamber 102 of the pressure relief device 1 through the second valve opening 1020 can flow through the first exhaust opening 142 of the flexible element 14 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can therefore enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0021] Then, as in Fig. As shown in Figure 1B, when the user stops driving the pressure-reducing device 1 by means of a source-generating unit 2, the first valve 12a and the second valve 12b return to their initial positions, covering the first valve opening 1000 and the second valve opening 1020, and the gas therefore does not flow back to the source-generating unit 2. Simultaneously, the gas in the pressure chamber 100 flows through a first outgassing channel 144a along a direction 30a to escape to the outside of the valve base 10. The pressure chamber 100 allows gas to escape, thus deforming the pressure-reducing valve 140 until it is relaxed, causing the pressure-reducing valve 140 to exit and open the first pressure-reducing opening 160, thereby forming a second outgassing channel 144c located between the upper cover 16 and the flexible element 14. The second degassing channel 144c connects the first pressure relief opening 160 and the second degassing opening 162.Therefore, the gas flowing back from the inflatable body 3 flows through the second vent opening 162 along a direction 30b and enters the pressure relief device 1, and the gas flows through the second vent channel 144c and escapes from the first pressure relief opening 160 along a direction 30c. The first exhaust channel 144a can connect the pressure chamber 100 with the outer part of the valve base 10, thereby accelerating the return velocity of the pressure relief valve 140 during the pressure reduction period, and therefore the pressure relief valve 140 leaves the first pressure reduction opening 160 quickly and automatically, thus forming the second exhaust channel 144c between the upper cover 16 and the flexible element 14 to connect the first pressure reduction opening 160 with the second exhaust opening 162 and causing the pressure reduction device 1 to have a faster pressure reduction efficiency and not requiring the solenoid valve to be actuated.

[0022] In some embodiments, the upper cover 16 is a non-elastic body. In some embodiments, the first valve 12a, the second valve 12b, and the flexible element 14 are made of a rubber material. In some embodiments, the first valve 12a and the second valve 12b are umbrella valves, but the present disclosure is not limited to these. In some embodiments, the part on which the outgassing chamber 102 is located is a polished surface. In some embodiments, the pressure rise value of the pressure relief device 1 is in a range of 100 mmHg to 400 mmHg.

[0023] In some embodiments, the cross-sectional area of ​​the first outgassing channel 144a is in a range of 1×10 -3 mm 2 up to 1 mm 2 In some embodiments, the pressure release time for the pressure release device 1 is within 2 seconds.

[0024] The following refers to Fig. 2A and Fig. 2B. Fig. Figure 2A is a schematic cross-sectional view of a pressure relief device 4 in a degassing state. Fig. Figure 2B is a schematic cross-sectional view of the pressure relief device 4 in a relaxed outgassing state. As shown in the figures, the pressure relief device 4 also includes a valve base 40, a first valve 12a, a second valve 12b, a flexible element 44, and a top cover 16. The structure and function of the elements and the relationship between them are essentially the same as those of the embodiments in Figure 2B. Fig. 1A and Fig. Section 1B and the associated detailed descriptions may refer to the preceding paragraphs and are not discussed again here. The difference between the present embodiment and the one in Section 1B is as follows: Fig. 1A and Fig. 1B consists in the fact that, in this embodiment, the flexible element 44 has a first incision 4440, the valve base 40 has a second incision 4442, and the first incision 4440 and the second incision 4442 form a first exhaust channel 144b. Therefore, the valve base 10 and the flexible element 14, which are in Fig. 1A and Fig. 1B is shown, replaced by the valve base 40 or the flexible element 44.

[0025] More precisely, as in Fig. Figure 2A shows that when the user drives the pressure relief device 4 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 4 through the first valve opening 4000 and the second valve opening 4020. The gas entering the pressure relief device 4 through the first valve opening 4000 creates pressure and pushes the pressure relief valve 440 along a direction 20a, and the pressure relief valve 440 therefore deforms to close the first pressure relief opening 160, thus preventing the first pressure relief opening 160, which is located between the valve base 40 and the upper cover 16, from communicating with the exhaust chamber 402 and the second exhaust opening 162.Therefore, the gas entering the exhaust chamber 402 of the pressure relief device 4 through the second valve opening 4020 can flow through the first exhaust opening 442 of the flexible element 44 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can then enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0026] Then, as in Fig. As shown in Figure 2B, when the user stops driving the pressure-reducing device 4 by means of a source-generating unit 2, the first valve 12a and the second valve 12b return to their initial positions, covering the first valve opening 4000 and the second valve opening 4020, respectively, and the gas therefore does not flow back to the source-generating unit 2. Simultaneously, the gas in the pressure chamber 400 flows through a first outgassing channel 144b along a direction 30d to escape to the outside of the valve base 40. The pressure chamber 400 allows gas to escape, and the pressure-reducing valve 440 therefore deforms until it is relaxed, causing the pressure-reducing valve 440 to exit and open the first pressure-reducing opening 160, thereby forming a second outgassing channel 144c located between the upper cover 16 and the flexible element 44. The second degassing channel 144c connects the first pressure relief opening 160 and the second degassing opening 162.Therefore, the gas flowing back from the inflatable body 3 flows through the second vent opening 162 along a direction 30b and enters the pressure relief device 4, and the gas flows through the second vent channel 144c and escapes from the first pressure relief opening 160 along a direction 30c.

[0027] The following will be discussed Fig. 3A and Fig. Reference is made to 3B. Fig. Figure 3A is a schematic cross-sectional view of a pressure relief device 5 in a degassing state. Fig. Figure 3B is a schematic cross-sectional view of the pressure relief device 5 in a relaxed outgassing state. Firstly, as shown in the figures, the pressure relief device 5 also includes a valve base 10, a first valve 12a, a second valve 12b, a flexible element 54, and a top cover 16. The structure and function of the elements and the relationship between them are essentially the same as those of the pressure relief devices in [reference to be added]. Fig. 1A and Fig. Section 1B and the associated detailed descriptions may refer to the preceding paragraphs and are not discussed again here. The difference between the present embodiment and the one in Section 1B is as follows: Fig. 1A and Fig. 1B consists in the fact that in this pressure relief device a first outgassing channel 144d penetrates the flexible element 54. Therefore, the in Fig. 1A and Fig. In this pressure relief device, the flexible element 14 shown in 1B is replaced by the flexible element 54.

[0028] More precisely, as in Fig. Figure 3A shows that when the user drives the pressure relief device 5 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 5 through the first valve opening 1000 and the second valve opening 1020. The gas entering the pressure relief device 5 through the first valve opening 1000 creates pressure and pushes the pressure relief valve 540 along a direction 20a, thus deforming the pressure relief valve 540 to close the first pressure relief opening 160. This prevents the first pressure relief opening 160, located between the valve base 10 and the upper cover 16, from being connected to the exhaust chamber 102 and the second exhaust opening 162.

[0029] Therefore, the gas entering the exhaust chamber 102 of the pressure relief device 5 through the second valve opening 1020 can flow through the first exhaust opening 542 of the flexible element 54 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can therefore enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0030] Then, as in Fig. As shown in Figure 3B, when the user stops driving the pressure-reducing device 5 by means of a source-generating unit 2, the first valve 12a and the second valve 12b return to their initial positions and cover the first valve opening 1000 and the second valve opening 1020, and the gas therefore does not flow back to the source-generating unit 2. Simultaneously, the gas in the pressure chamber 100 flows through a first outgassing channel 144d along a direction 30e to escape to the outside of the valve base 10. The pressure chamber 100 allows gas to escape, and the pressure-reducing valve 540 therefore deforms until it is relaxed, causing the pressure-reducing valve 540 to exit and open the first pressure-reducing opening 160, thereby forming a second outgassing channel 144c located between the upper cover 16 and the flexible element 54. The second degassing channel 144c connects the first pressure relief opening 160 and the second degassing opening 162.Therefore, the gas flowing back from the inflatable body 3 flows through the second vent opening 162 along a direction 30b and enters the pressure relief device 5, and the gas flows through the second vent channel 144c and escapes from the first pressure relief opening 160 along a direction 30c.

[0031] The following refers to Fig. 4A and Fig. 4B. Fig. Figure 4A is a schematic cross-sectional view of a pressure relief device 6 in a degassing state. Fig. Figure 4B is a schematic cross-sectional view of the pressure relief device 6 in a relaxed outgassing state. Firstly, as shown in the figures, the pressure relief device 6 also includes a valve base 60, a first valve 12a, a second valve 12b, a flexible element 14, and a top cover 16. The structure and function of the elements and the relationship between them are essentially the same as those of the pressure relief device in Figure 4B. Fig. 1A and Fig. Section 1B and the associated detailed descriptions may refer to the preceding paragraphs and are not discussed again here. The difference between the present pressure relief device and the one in Fig. 1A and Fig. 1B consists in the fact that the valve base 60 in this pressure relief device has a third exhaust gas channel 144e. The third exhaust gas channel 144e connects the pressure chamber 600 to the outside of the valve base 60. Therefore, the in Fig. 1A and Fig. In this pressure relief device, the valve base 10 shown in 1B is replaced by the valve base 60.

[0032] More precisely, as in Fig. Figure 4A shows that when the user drives the pressure relief device 6 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 6 through the first valve opening 6000 and the second valve opening 6020. The gas entering the pressure relief device 6 through the first valve opening 6000 creates pressure and pushes the pressure relief valve 140 along a direction 20a, thus deforming the pressure relief valve 140 to close the first pressure relief opening 160. This prevents the first pressure relief opening 160, located between the valve base 60 and the upper cover 16, from being connected to the exhaust chamber 602 and the second exhaust opening 162.Therefore, the gas entering the exhaust chamber 602 of the pressure relief device 6 through the second valve opening 6020 can flow through the first exhaust opening 142 of the flexible element 14 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can therefore enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0033] Then, as in Fig. As shown in Figure 4B, when the user stops driving the pressure relief device 6 by means of a source generation unit 2, the first valve 12a and the second valve 12b return to their initial positions, covering the first valve opening 6000 and the second valve opening 6020, and the gas therefore does not flow back to the source generation unit 2. Simultaneously, the gas in the pressure chamber 600 flows through a first exhaust channel 144a and a third exhaust channel 144e along the direction of 30a and 30f, respectively, to escape. The pressure chamber 600 allows gas to escape, and the pressure relief valve 140 is therefore deformed until it relaxes, causing the pressure relief valve 140 to exit and open the first pressure relief opening 160, thereby forming a second exhaust channel 144c located between the upper cover 16 and the flexible element 14. The second degassing channel 144c connects the first pressure relief opening 160 and the second degassing opening 162.Therefore, the gas flowing back from the inflatable body 3 passes through the second vent 162 along a direction 30b and enters the pressure relief device 6. The gas then flows through the second vent channel 144c and escapes from the first pressure relief vent 160 along a direction 30c. The first vent channel 144a and the third vent channel 144e enable the pressure relief valve 140 to exit the first pressure relief vent 160 quickly and automatically, thus forming the second vent channel 144c between the top cover 16 and the flexible element 14. This vent channel connects the first pressure relief vent 160 to the second vent 162, resulting in faster pressure relief efficiency for the pressure relief device 6 and eliminating the need for solenoid valve actuation. This also prevents failure of the pressure relief device 6 due to a malfunctioning vent channel.

[0034] The sum of the cross-sectional area of ​​the first exhaust duct 144a and the cross-sectional area of ​​the third exhaust duct 144e can be in a range of 1×10 -3 mm 2 up to 1 mm 2 In some embodiments, the pressure release time for the pressure release device 6 is within 2 seconds.

[0035] The following refers to Fig. 5A and Fig. 5B. Fig. Figure 5A is a schematic cross-sectional view of a pressure relief device 7 in a degassing state. Fig. Figure 5B is a schematic cross-sectional view of the pressure relief device 7 in a relaxed outgassing state. Firstly, as shown in the figures, the pressure relief device 7 also includes a valve base 70, a first valve 12a, a second valve 12b, a flexible element 14, and a top cover 16. The structure and function of the elements and the relationship between them are essentially the same as those of the pressure relief device in Figure 5B. Fig. 1A and Fig. Section 1B and its associated detailed descriptions may refer to the preceding paragraphs and are not discussed again here. The difference between the pressure relief device and the one in Fig. 1A and Fig. 1B consists in the fact that the valve base 70 in this pressure relief device has a third exhaust gas channel 144f. The third exhaust gas channel 144f connects the pressure chamber 700 with the exhaust gas chamber 702. Therefore, the in Fig. 1A and Fig. In this pressure relief device, the valve base 10 shown in 1B is replaced by the valve base 70.

[0036] More precisely, as in Fig. Figure 5A shows that when the user drives the pressure relief device 7 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 7 through the first valve opening 7000 and the second valve opening 7020. The gas entering the pressure relief device 7 through the first valve opening 7000 creates pressure and pushes the pressure relief valve 140 along a direction 20a, thus deforming the pressure relief valve 140 to close the first pressure relief opening 160. This prevents the first pressure relief opening 160, located between the valve base 70 and the upper cover 16, from being connected to the exhaust chamber 702 and the second exhaust opening 162.Therefore, the gas entering the exhaust chamber 702 of the pressure relief device 7 through the second valve opening 7020 can flow through the first exhaust opening 142 of the flexible element 14 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can therefore enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0037] Then, as in Fig. As shown in Figure 5B, when the user stops the pressure relief device 7 being driven by a source generation unit 2, the first valve 12a and the second valve 12b return to their initial positions and cover the first valve opening 7000 and the second valve opening 7020, and the gas therefore does not flow back to the source generation unit 2. Simultaneously, the gas in the pressure chamber 700 flows through a first exhaust channel 144a and a third exhaust channel 144f, respectively, along the direction of 30a and 30g, respectively, to escape. The pressure chamber 700 allows gas to escape, and the pressure relief valve 140 therefore deforms until it is relaxed, causing the pressure relief valve 140 to exit and open the first pressure relief opening 160, thereby forming a second exhaust channel 144c located between the upper cover 16 and the flexible element 14. The second degassing channel 144c connects the first pressure relief opening 160 and the second degassing opening 162.Therefore, the gas flowing back from the inflatable body 3 flows through the second vent 162 along a direction 30b and enters the pressure relief device 7. The gas then flows through the second vent channel 144c and escapes from the first pressure relief vent 160 along a direction 30c. The first vent channel 144a and the third vent channel 144f enable the pressure relief valve 140 to exit the first pressure relief vent 160 quickly and automatically, thus forming the second vent channel 144c between the upper cover 16 and the flexible element 14. This connects the first pressure relief vent 160 to the second vent 162, allowing the pressure relief device 7 to operate more efficiently without requiring the solenoid valve to be actuated. This also prevents the pressure relief device 7 from failing due to a malfunctioning vent channel.

[0038] The sum of the cross-sectional area of ​​the first exhaust duct 144a and the cross-sectional area of ​​the third exhaust duct 144f can be in a range of 1×10 -3 mm 2 up to 1 mm 2 In some embodiments, the pressure release time for the pressure release device 7 is within 2 seconds.

[0039] The following refers to Fig. 6A and Fig. 6B. Fig. Figure 6A is a schematic cross-sectional view of a pressure relief device 8 according to the invention in a degassing state. Fig. Figure 6B is a schematic cross-sectional view of the pressure relief device 8 in a relaxed outgassing state according to some embodiments of the present disclosure. First, the pressure relief device 8, as shown in the figures, comprises a valve base 80, a first valve 12a, a second valve 12b, a flexible element 84, and a top cover 16. The structure and function of the elements and the relationship between them are described in detail below.

[0040] The valve base 80 has a pressure chamber 800 and an exhaust chamber 802. The upper and lower surfaces of the pressure chamber 800 have a passage 8002 and a first valve opening 8000, respectively. The valve base 80 also has a valve opening channel 804, which is connected to the pressure chamber 800 by the first valve channel 8000. A lower surface of the exhaust chamber 802 has a second valve opening 8020. A first exhaust channel 144g is formed at least on the valve base 80 and connects the valve opening channel 804 to the outside of the valve base 80. The first valve 12a is located in the pressure chamber 800 and at least partially covers the first valve opening 8000 to form a pressure relief gap 8004. The second valve 12b is located in the exhaust chamber 802 and covers the second valve opening 8020. The flexible element 84 is arranged at the valve base 80 and has a pressure relief valve 840 and a first exhaust opening 842.The pressure relief valve 840 covers the passage 8002. The first venting port 842 is connected to the venting chamber 802. The upper cover 16 is arranged on the flexible element 84 and has a first pressure relief port 160 and a second venting port 162. The first pressure relief port 160 faces the pressure relief valve 840. The second venting port 162 is connected to the first venting port 842.

[0041] More precisely, as in Fig. Figure 6A shows that when the user drives the pressure relief device 8 by means of a source generation unit 2, gas generated by the source generation unit 2 enters the pressure relief device 8 through the first valve opening 8000 and the second valve opening 8020. The gas entering the pressure relief device 8 through the first valve opening 8000 creates pressure and pushes the pressure relief valve 840 along a direction 20a, thus deforming the pressure relief valve 840 to close the first pressure relief opening 160. This prevents the first pressure relief opening 160, located between the valve base 80 and the upper cover 16, from being connected to the exhaust chamber 802 and the second exhaust opening 162.Therefore, the gas entering the exhaust chamber 802 of the pressure relief device 8 through the second valve opening 8020 can flow through the first exhaust opening 842 of the flexible element 84 along a direction 20b and enter the second exhaust opening 162 along a direction 20c, instead of entering the first pressure relief opening 160. The gas can therefore enter an inflatable body 3 through the second exhaust opening 162 to achieve an inflation effect.

[0042] Then, as in Fig. As shown in Figure 6B, when the user stops driving the pressure relief device 8 by a source generation unit 2 to form the pressure relief gap 8004, the first valve 12a returns to its initial position and covers the valve opening channel 804. This allows the gas in the pressure chamber 800 to flow through the pressure relief gap 8004 and a first exhaust channel 144g along a direction 30h to escape to the outside of the valve base 80. As the pressure chamber 800 releases gas, the pressure relief valve 840 deforms until it is relaxed, causing the pressure relief valve 840 to exit and open the first pressure relief opening 160. This creates a second exhaust channel 144c located between the upper cover 16 and the flexible element 84. The second exhaust channel 144c connects the first pressure relief opening 160 and the second exhaust opening 162.Therefore, the gas flowing back from the inflatable body 3 passes through the second vent opening 162 along a direction 30b and enters the pressure relief device 8, and the gas flows through the second vent channel 144c and escapes from the first pressure relief opening 160 along a direction 30c. The first venting channel 144g can connect the pressure chamber 800 with the outer part of the valve base 80, thereby accelerating the return velocity of the pressure relief valve 840 during the pressure relief period, and therefore the pressure relief valve 840 leaves the first pressure relief opening 160 quickly and automatically, thus forming the second venting channel 144c between the upper cover 16 and the flexible element 84 to connect the first pressure relief opening 160 with the second venting opening 162 and causing the pressure relief device 8 to have a faster pressure relief efficiency and not requiring the solenoid valve to be actuated.

[0043] In some embodiments, the upper cover 16 is a non-elastic body. In some embodiments, the first valve 12a, the second valve 12b, and the flexible element 84 are made of a rubber material. In some embodiments, the first valve 12a and the second valve 12b are umbrella valves, but the present disclosure is not limited to these. In some embodiments, the pressure relief gap 8004 formed by the valve opening channel 804 is incompletely covered by the first valve 12a.For example, the pressure relief gap 8004 is produced by a method such that a surface adjacent to the pressure relief gap 8004 and contacted by the first valve 12a is a rough surface, the height of the first valve 12a incompletely covers the valve opening channel 804 during a pressure relief process, the first valve 12a has at least one channel to connect the pressure chamber 800 to the valve opening channel 804, the covering area of ​​the first valve 12a is smaller than the cross-section of the valve opening channel 804, or combinations thereof. In some embodiments, the pressure rise value of the pressure relief device 8 is in the range of 100 mmHg to 400 mmHg. In some embodiments, the cross-sectional area of ​​the first exhaust channel 144g is in the range of 1×10. -3 mm 2 up to 1 mm 2 In some embodiments, the pressure release time for the pressure release device 8 is within 2 seconds.

[0044] In some embodiments, the valve base 80 further includes a third exhaust gas channel 144e, which is located in Fig. 4A and Fig. 4B is shown. The third exhaust channel 144e connects the pressure chamber 800 to the outside of the valve base 80. Its mechanism can be described in Fig. 4A and Fig. Referring to the preceding paragraphs shown in section 4B, this can cause the pressure relief device 8 to have a faster pressure relief efficiency and not require the solenoid valve to be actuated. This can also prevent the failure of the pressure relief device 8 due to a malfunctioning vent channel.

[0045] In some embodiments, the valve base 80 further includes a third exhaust gas channel 144f, which is located in Fig. 5A and Fig. 5B is shown. The third exhaust channel 144f connects the pressure chamber 800 with the exhaust chamber 802. Its mechanism can be described in Fig. 5A and Fig. Referring to the preceding paragraphs shown in section 5B, this can cause the pressure relief device 8 to have a faster pressure relief efficiency and not require the solenoid valve to be actuated. This can also prevent the failure of the pressure relief device 8 due to a malfunctioning vent channel.

[0046] The following refers to Fig. 7A and Fig. 7B. Fig. Figure 7A is a schematic underside view of a flexible element according to some embodiments of the present disclosure. Fig. Figure 7B is a schematic underside view of another flexible element according to some embodiments of the present disclosure. As in Fig. As shown in Figure 7A, the pressure relief valve 140a has, in some embodiments, a recess of concentric circles. As shown in Fig.As shown in Figure 7B, the pressure relief valve 140a has a cross-shaped recess in other embodiments, but the present disclosure is not limited to this. This allows the locally thinner pressure relief valve to be easily deformed during the pressure relief process, thereby accelerating the return velocity of the pressure relief valve 140 during the pressure relief period, so that the pressure relief device can have a faster pressure relief efficiency.

[0047] As explained in the preceding description of the embodiments of the disclosure, it is evident that the pressure relief device includes the pressure relief valve. The first venting channel is formed at least at the pressure relief valve. Furthermore, the first venting channel can also be formed at least at the valve base to connect the valve opening channel with the exterior of the valve base. In this way, the first venting channel can connect the pressure chamber with the exterior of the valve base, thereby accelerating the velocity to the opening of the pressure relief valve during the pressure relief period. Consequently, the pressure relief valve exits the first pressure relief opening quickly and automatically, thus forming the second venting channel between the upper cover and the flexible element. This venting channel connects the first pressure relief opening with the second venting opening, resulting in faster pressure relief efficiency for the pressure relief device.Furthermore, the outgassing channel is integrated into the flexible element, allowing it to be formed using processes such as injection molding or thermoforming, thus reducing production costs. Additionally, users can produce several different types of outgassing channels or recesses because the flexible element is designed for easier shaping. Moreover, users can replace the flexible element with the appropriate type of outgassing channel or recess to suit their specific requirements, enabling quick and cost-effective replacement.

Claims

[1] Pressure relief device comprising the following: a valve base (80) comprising a pressure chamber (800) and an exhaust chamber (802), wherein the upper and lower surfaces of the pressure chamber (800) have a passage (8002) or a first valve opening (8000), wherein the valve base (80) further comprises a valve opening channel (804) connected to the pressure chamber (800) through the first valve opening (8000), and a lower surface of the exhaust chamber (802) comprising a second valve opening (8020); a first valve (12a) which is arranged in the pressure chamber (800) and at least partially covers the first valve opening (8000) to form a pressure relief gap (8004); a flexible element (84) arranged at the valve base (80) and comprising a pressure relief valve (840) and a first exhaust port (842), wherein the pressure relief valve (840) covers the passage (8002), the first exhaust port (842) being connected to the exhaust chamber (802); and an upper cover (16) arranged on the flexible element (84) and having a first pressure relief opening (160) and a second vent opening (162), wherein the first pressure relief opening (160) faces the pressure relief valve (840), wherein the second vent opening (162) is connected to the first vent opening (842), wherein the pressure relief valve (840) is designed to deform due to the action of an atmosphere in the pressure chamber (800) in order to selectively close the first pressure relief opening (160) or to open the first pressure relief opening (160) to form a second vent channel (144c) between the upper cover (16) and the flexible element (84), and the second vent channel (144c) is connected to the first pressure relief opening (160) and the second vent opening (162), characterized by , that at least one first exhaust gas channel (144g) is formed at the valve base (80) and spaced apart from the pressure chamber (800) and connects the valve opening channel (804) to the outside of the valve base (80). [2] Pressure relief device according to claim 1, further comprising: a second valve (12b) which is located in the exhaust chamber (802) and the second valve opening (8020) is covered. [3] Pressure relief device according to claim 1, wherein a cross-sectional area of ​​the first outgassing channel (144g) in a range of 1×10 -3 mm 2 up to 1 mm 2 is. [4] Pressure relief device according to claim 1, wherein the flexible element (84) has a first incision (4440), the valve base (40) has a second incision (4442) and the first incision (4440) and the second incision (4442) form the first outgassing channel (144b). [5] Pressure relief device according to claim 1, wherein the first outgassing channel (144d) penetrates the flexible element (84). [6] Pressure relief device according to claim 1, wherein the valve base (80) has a third outgassing channel (144e) connecting the pressure chamber (100) to the outside of the valve base (80). [7] Pressure relief device according to claim 6, wherein the sum of a cross-sectional area of ​​the first exhaust channel (144a, 144g) and a cross-sectional area of ​​the third exhaust channel (144e) in a range of 1×10 3 mm 2 up to 1 mm 2 is. [8] Pressure relief device according to claim 1, wherein the valve base (80) has a third exhaust channel (144f) connecting the pressure chamber (800) to the exhaust chamber (802). [9] Pressure relief device according to claim 8, wherein the sum of a cross-sectional area of ​​the first exhaust channel (144a, 144g) and a cross-sectional area of ​​the third exhaust channel (144f) in a range of 1×10-3 mm 2 up to 1 mm 2 is. [10] Pressure relief device according to claim 1, wherein the pressure relief valve (140) has an annular groove or a cross-shaped groove.

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