Connector with over-temperature and over-current protection structure, gas valve and gas appliance

Abstract

The utility model discloses a kind of connector with over-temperature and over-current protection structure, gas valve and gas appliance. The connector with over-temperature and over-current protection structure includes: shell, shell has gas inlet end and gas outlet end, and gas passage is equipped in shell;Over-temperature protection structure, movably in gas passage, and towards gas outlet end, for softening when ambient temperature is greater than preset temperature, to block gas passage;Over-current protection structure, movably in gas passage, and towards gas inlet end, for blocking gas passage when the gas inlet flow of gas inlet end is greater than preset flow. The connector with over-temperature and over-current protection structure in the utility model, can cut off airflow when high temperature and over-current, reach the effect of protection.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, and in particular to a connector, gas valve and gas appliance with over-temperature and over-current protection structure. Background Technology

[0002] The connector is located at the gas inlet of the gas valve and is used to connect to the gas cylinder to allow gas to enter the gas valve from the cylinder, and then the gas valve outputs gas for combustion. However, existing connectors with over-temperature and over-current protection structures only perform the connection function and do not provide protection when the external environment changes, such as at high temperatures or when the inlet pressure is too high. Utility Model Content

[0003] To address at least one problem existing in the prior art, according to one aspect of the present invention, a connector with an over-temperature and over-current protection structure is provided, comprising:

[0004] A housing having an air inlet and an air outlet, and a gas passage provided inside the housing;

[0005] An over-temperature protection structure is movably disposed within the gas channel and faces the gas outlet. It is used to soften when the ambient temperature is higher than a preset temperature to block the gas channel.

[0006] An overcurrent protection structure is movably disposed within the gas channel and facing the air inlet end, used to block the gas channel when the air inlet flow rate at the air inlet end is greater than a preset flow rate.

[0007] In some embodiments, the gas channel includes a first section and a second section, the first section facing the inlet end and the second section facing the outlet end, the inner diameter of the first section being smaller than the inner diameter of the second section, the over-temperature protection structure being disposed in the first section and the over-current protection structure being disposed in the second section.

[0008] In some embodiments, the over-temperature protection structure includes a plastic component and a first elastic component, the plastic component being used to soften at high temperatures to seal the first segment, and the first elastic component being used to apply an elastic force to the plastic component.

[0009] In some embodiments, the first segment includes a first part and a second part, the first part facing the air outlet, the second part connecting to the second segment, the inner diameter of the first part being smaller than the inner diameter of the second part, the plastic part being used to seal the first part at high temperatures, and the first elastic element being disposed in the second part.

[0010] In some embodiments, the second segment includes a third part and a fourth part, the third part being connected to the first segment, the fourth part being connected to the air intake end, and the inner diameter of the third part being smaller than the inner diameter of the fourth part;

[0011] The overcurrent protection structure includes a mounting component and a second elastic component. The second elastic component and the overtemperature protection structure abut against each other and are used to apply an elastic force to the mounting component. The mounting component is used to block the opening of the third part toward the fourth part when the air intake flow rate at the air intake end is greater than a preset flow rate.

[0012] In some embodiments, the second segment further includes a gradient portion connected between the third and fourth portions, the inner diameter of the gradient portion gradually increasing from the third portion to the fourth portion, the gradient portion being used to abut against the mounting member.

[0013] In some embodiments, the mounting component has a pressure relief channel communicating with the air inlet end and the air inlet end, the pressure relief channel being used to allow gas flowing into the air inlet end to flow into the first section;

[0014] The second elastic element is used to apply an elastic force to the mounting member so that the mounting member opens the opening of the third part toward the fourth part.

[0015] In some embodiments, the overcurrent protection structure further includes a first sealing ring for sealing the opening of the third part toward the fourth part.

[0016] In some embodiments, the end of the overcurrent protection structure facing the air intake end is provided with an exhaust passage, which extends toward the sidewall of the overcurrent protection structure.

[0017] In some embodiments, the connector with over-temperature and over-current protection structures further includes an adjustment structure located at the air inlet end and opposing the over-current protection structure, for driving the over-current protection structure to move closer to or further away from the air inlet end to adjust the preset flow rate.

[0018] In some embodiments, the adjustment structure includes an adjustment element and a mounting sleeve threadedly connected to the adjustment element, the mounting sleeve being embedded in the inner wall of the air inlet end, and the adjustment element and the overcurrent protection structure abutting against each other.

[0019] In another aspect, this utility model provides a gas valve including the connector described above with over-temperature and over-current protection structures.

[0020] In another aspect, this utility model provides a gas appliance including the gas valve described above.

[0021] In summary, the connector, gas valve, and gas valve with over-temperature and over-current protection structures provided by this utility model have the following technical effects:

[0022] By incorporating over-temperature protection and over-current protection structures within the casing, the structure can soften and deform under high-temperature or high-pressure conditions or block gas passages, thereby achieving a safety protection effect and preventing the risk of explosion under high temperature or high pressure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the connector with over-temperature and over-current protection structure according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 An exploded view of a connector with over-temperature and over-current protection structures.

[0025] Figure 3 for Figure 1 A cross-sectional schematic diagram of a connector with over-temperature and over-current protection structures;

[0026] Figure 4 for Figure 2 Schematic diagram of the over-temperature protection structure and over-current protection structure in the image;

[0027] Figure 5 for Figure 2 A structural diagram of the plastic parts in the diagram;

[0028] Figure 6 for Figure 2 A structural diagram of the mounting components.

[0029] Attached Figure: 100 - Connector with over-temperature and over-current protection structure; 10 - Housing; 11 - Inlet end; 12 - Outlet end; 13 - Gas passage; 131 - First section; 1311 - First part; 1312 - Second part; 132 - Second section; 1321 - Third part; 1322 - Fourth part; 1324 - Gradient part; 20 - Over-temperature protection structure; 21 - Plastic part; 211 - Flow groove; 22 - First elastic element; 30 - Over-current protection structure; 31 - Mounting part; 311 - Pressure relief passage; 312 - Constant diameter section; 313 - Support head; 3131 - Variable diameter section; 314 - Exhaust passage; 32 - First sealing ring; 33 - Second elastic element; 40 - Support piece; 50 - Adjustment structure; 51 - Adjustment part; 52 - Mounting sleeve; 53 - Second sealing ring; 60 - Third sealing ring. Detailed Implementation

[0030] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Please see Figures 1 to 6 The connector 100 with over-temperature and over-current protection structures provided in this embodiment of the utility model includes a housing 10, an over-temperature protection structure 20, and an over-current protection structure 30.

[0035] The housing 10 has an air inlet end 11 and an air outlet end 12, and a gas passage 13 is provided inside the housing 10. The over-temperature protection structure 20 is movably disposed in the gas passage 13 and faces the air outlet end 12. It is used to soften when the ambient temperature is higher than the preset temperature to block the gas passage 13. The over-current protection structure 30 is movably disposed in the gas passage 13 and faces the air inlet end 11. It is used to block the gas passage 13 when the air inlet pressure at the air inlet end 11 is higher than the preset pressure.

[0036] The connector 100 with over-temperature and over-current protection structures described above, by setting over-temperature protection structure 20 and over-current protection structure 30 in the housing 10, can soften and deform or block the gas passage 13 in high-temperature or high-pressure environments, respectively, to achieve the effect of safety protection and avoid the danger of explosion at high temperature or high pressure.

[0037] When the over-temperature protection structure 20 softens, it may expand due to thermal expansion, thereby blocking the gas flow channel 13; or it may deform and gradually extend into a section of the gas flow channel 13 with a smaller inner diameter, thereby blocking the gas flow channel 13. When the over-current protection structure 30 blocks the gas flow channel 13, it may push the over-temperature protection structure 20 to the end of the outer shell 10 to block the air intake at the outlet 12, thereby blocking the gas flow channel 13. Specifically, in order to facilitate the sealing of the gas flow channel 13, the over-temperature protection structure 20 and the over-current protection structure 30 are respectively provided with their own structures. In this embodiment, the gas channel 13 includes a first section 131 and a second section 132. The first section 131 faces the inlet end 11, and the second section 132 faces the outlet end 12. The inner diameter of the first section 131 is smaller than the inner diameter of the second section 132. The over-temperature protection structure 20 is provided in the first section 131, and the over-current protection structure 30 is provided in the second section 132. That is, because the inner diameter of the first section 131 is smaller, it is easier to seal the first section 131 when the over-temperature protection structure 20 softens.

[0038] Specifically, when the external temperature exceeds the preset withstand temperature of the over-temperature protection structure 20, the over-temperature protection structure 20 softens at high temperature, thereby deforming and being squeezed into the first section 131, thus blocking the first section 131; when the flow rate at the air inlet 11 exceeds the withstand flow rate of the overcurrent protection structure 30, the high pressure drives the overcurrent protection structure 30 to move, thereby pressing against the side wall of the second section 132, so that the flow in the second section 132 is blocked, thus disconnecting the gas.

[0039] Please see Figures 1 to 5 This is a schematic diagram of the overheat protection structure 20 of this utility model embodiment, including a plastic part 21 and a first elastic member 22. The plastic part 21 is used to soften at high temperature to seal the first segment 131. The first elastic member 22 is used to apply elastic force to the plastic part 21 to seal it in the first segment 131. For example, under normal conditions, there is a gap between the plastic part 21 and the inner wall of the first segment 131 so that gas can flow from the inlet end 11 to the outlet end 12. When the plastic part 21 softens, it deforms and is squeezed by the first elastic member 22, which squeezes it into the first segment 131 to seal the first segment 131.

[0040] Further, please refer to Figure 5 In order to allow gas to flow smoothly from the outlet 12 under normal conditions, a flow groove 211 is provided on the outer wall of the plastic part 21. The flow groove 211 is used to allow gas to flow through, thereby increasing the gas outflow.

[0041] In one embodiment of this utility model, when sealing the air outlet 12, the first segment 131 includes a first part 1311 and a second part 1312. The first part 1311 faces the air outlet 12, and the second part 1312 is connected to the second segment 132. The inner diameter of the first part 1311 is smaller than the inner diameter of the second part 1312. The plastic part 21 is used to seal the first part 1311 at high temperature. The first elastic member 22 is disposed in the second part 1312 and is used to apply elastic force to the plastic part 21 so that the plastic part 21 is gradually pressed into the first part 1311 as the plastic part 21 softens.

[0042] Specifically, in this embodiment, the plastic part 21 is made of polypropylene or polyethylene. When the ambient temperature reaches 80°C, the plastic part 21 gradually softens, thereby filling the first part 1311. If the ambient temperature continues to rise, the plastic part 21 will gradually become fluid and fill the first part 1311, thereby achieving a sealing effect. In other embodiments, other plastic materials can also be used.

[0043] In order to be compatible with the installation of the overcurrent protection structure 30 in the second section 132, the first elastic element 22 in this embodiment is a tower-shaped spring. The end with a smaller diameter abuts against the plastic part 21, and the end with a larger diameter abuts against the overcurrent protection structure 30. Thus, the tower-shaped spring is adapted to the first part 1311 and the second section 132 with different diameters.

[0044] Please see Figures 2 to 4 as well as Figure 5 In this embodiment, when the overcurrent protection structure 30 is installed, the second section 132 includes a third part 1321 and a fourth part 1322. The third part 1321 is connected to the first section 131, and the fourth part 1322 is connected to the air inlet 11. The inner diameter of the third part 1321 is smaller than the inner diameter of the fourth part 1322. The overcurrent protection structure 30 includes a mounting member 31, a first sealing ring 32, and a second elastic member 33. The first sealing ring 32 is sleeved on the mounting member 31 and is used to block the opening of the third part 1321 toward the fourth part 1322 when the air inlet flow rate of the air inlet 11 is greater than the preset flow rate. The second elastic member 33 is connected to the overtemperature protection structure 20. The abutment is used to apply an elastic force to the mounting member 31. Thus, when the airflow or air pressure at the air inlet 11 is greater than a predetermined threshold, the airflow pushes the mounting member 31 toward the over-temperature protection structure 20. The mounting member 31 extends into the third part 1321. Since the inner diameter of the third part 1321 is smaller than the inner diameter of the fourth part 1322, there can be a stepped surface between the third part 1321 and the fourth part 1322. The airflow pushes the mounting member 31 to drive the first sealing ring 32 to abut against the stepped surface. Thus, the cooperation between the first sealing ring 32 and the mounting member 31 seals the opening of the third part 1321 toward the fourth part 1322.

[0045] Understandably, when gas flows from the inlet end 11 to the outlet end 12, there is a gap between the mounting part 31 and the inner wall of the second section 132, thereby enabling gas to flow towards the outlet end 12.

[0046] In some embodiments, the preset flow rate can be set to 2.8m. 3 / h or a preset pressure of 0.7Mpa. When the gas flow rate from the inlet 11 is greater than the preset value, the airflow from the inlet 11 will push the mounting part 31 to move in the direction of the third part 1321.

[0047] Furthermore, to ensure the sealing effect, the second section 132 also includes a gradient section 1324, which connects the third section 1321 and the fourth section 1322. The inner diameter of the gradient section 1324 gradually increases from the third section 1321 to the fourth section 1322. The gradient section 1324 is used to abut against the first sealing ring 32. Thus, as the airflow pushes the mounting member 31 towards the second section 132, the mounting member 31 drives the first sealing ring 32 to abut against the gradient section 1324. Since the inner diameter of the gradient section 1324 is in a changing state, the inner wall of the gradient section 1324 will compress the first sealing ring 32, thereby making the first sealing ring 32 stick tightly to the gradient section 1324, ensuring the sealing effect.

[0048] Specifically, corresponding to the structural features of the third part 1321 and the fourth part 1322, the mounting component 31 of this embodiment includes a constant diameter section 312 and a supporting head 313. The diameter of the constant diameter section 312 remains constant and can reciprocate between the third part 1321 and the fourth part 1322. The first sealing ring 32 is sleeved on the constant diameter section 312. The supporting head 313 is used to abut against the air inlet end 11. In order to adapt to the small inlet of the air inlet end 11, the supporting head 313 has a variable diameter section 3131. The outer diameter of the variable diameter section 3131 gradually decreases in the direction away from the constant diameter section 312, so that it can abut against the air inlet end 11 in normal use, and the gas can flow into the gas channel 13 through the variable diameter section 3131.

[0049] Furthermore, to facilitate the use of the connector 100 with over-temperature and over-current protection structures on the gas valve, the mounting part 31 has a connection between the inlet end 11, the outlet end 12, and the pressure relief channel 311. When the first sealing ring blocks the gas flow channel 13, the pressure relief channel 311 can allow the gas flowing in from the inlet end 11 to flow into the first section 131. For example, when the connector 100 with over-temperature and over-current protection structures is applied to the gas valve, the gas valve is connected to the gas stove. As the first sealing ring 32 blocks the second part 1312, the gas can only flow through the pressure relief channel 311 to the outlet end 12. The gas flows out in direction 2. At this time, the flame of the gas stove becomes very small. The user will turn off the gas stove, but the gas cylinder is in the open state. The pressure relief channel 311 can allow the gas flowing in from the gas inlet 11 to flow into the first section 131. The gas pressure in the housing gradually increases. When the gas pressure in the housing 10 reaches equilibrium, the second elastic element 33 has elastic force. At this time, the elastic force is applied to the mounting part 31, pushing the first sealing ring 32 away from the transition part 1324. At this time, the connector 100 with over-temperature and over-current protection structure can supply gas normally, thereby achieving an automatic reset effect, which is convenient for the user.

[0050] Understandably, the diameter of the pressure relief channel 311 needs to be set relatively small so that the flame of the gas stove gradually decreases and can no longer provide heat. At this time, the user can turn off the gas stove, and after the installation part 31 is returned to its original position, the gas stove can be turned on again.

[0051] It should be noted that the overcurrent protection structure 30 is held against the air intake end 11 during normal use. Therefore, to prevent the airflow from violently impacting the overcurrent protection structure 30 when entering the air intake end 11, which would cause a buzzing sound, please refer to [the relevant documentation / reference needed]. Figure 6 The overcurrent protection structure 30 has an exhaust channel 314 at one end facing the air inlet 11. The exhaust channel 314 extends toward the side wall of the overcurrent protection structure 30. Specifically, the exhaust channel 314 is provided on the mounting part 31 and extends toward the side wall of the mounting part 31. The exhaust channel 314 is connected to the air inlet of the air inlet 11. When gas flows in from the air inlet 11, it can flow into the exhaust channel 314 and out toward the side wall of the gas flow channel 13, thereby flowing into the second section 132, so as to avoid the high-pressure airflow hitting the mounting part 31 and causing a buzzing phenomenon.

[0052] Furthermore, when setting the exhaust channel 314, one or more channels can be set, and there is no limitation here.

[0053] Further, please refer to Figures 2 to 4Since the ends of the over-temperature protection structure 20 and the over-current protection structure 30 that abut against each other are both elastic elements, in order to achieve the expansion and contraction effect of the elastic elements and facilitate the installation of the over-temperature protection structure 20 and the over-current protection structure 30 in the housing 10, the connector 100 with over-temperature and over-current protection structures also includes a retaining piece 40. The inner diameter of the first section 131 is smaller than the inner diameter of the second section 132, that is, there is a transition surface between the second part 1312 and the third part 1321. The retaining piece 40 is installed on the transition surface, and the two sides are respectively used for the first elastic element 22 and the second elastic element 33 to abut against each other, so that the ends of the first elastic element 22 and the second elastic element 33 abut against a hard object, thereby applying elastic force to the plastic part 21 or the mounting part 31 respectively.

[0054] Please see Figures 1 to 4 In one embodiment of this utility model, in order to meet different user needs, the connector 100 with over-temperature and over-current protection structures further includes an adjustment structure 50. The adjustment structure 50 is disposed at the air inlet end 11 and abuts against the over-current protection structure 30. It is used to drive the over-current protection structure 30 to move closer to or away from the air inlet end 11 to adjust the preset flow rate. That is, by adjusting the movement of the adjustment structure 50 relative to the housing 10, the over-current protection structure 30 is pushed to move closer to or away from the air inlet end 11. When moving away from the air inlet end 11, the first sealing ring 32 is closer to the gradient part 1324; when moving closer to the air inlet end 11, the first sealing ring 32 is away from the gradient part 1324. When the first sealing ring 32 approaches the transition section 1324, because the distance between them is very close, a smaller preset flow rate is sufficient to push the first sealing ring 32 against the transition section 1324. In other words, a smaller air intake flow rate at the air intake end 11 is sufficient to push the first sealing ring 32 to block the transition section 1324. When the first sealing ring 32 moves away from the transition section 1324, because the first sealing ring 32 moves away from the transition section 1324, the preset flow rate will increase. In other words, a larger air intake flow rate at the air intake end 11 is needed to push the first sealing ring 32 to block the transition section 1324.

[0055] Specifically, the adjustment structure 50 in this embodiment includes an adjustment member 51 and a mounting sleeve 52 threadedly connected to the adjustment member 51. The mounting sleeve 52 is embedded in the inner wall of the air inlet end 11. The adjustment member 51 abuts against the overcurrent protection structure 30, specifically against the mounting member 31. Thus, by turning the adjustment member 51, the mounting member 31 is pushed to move, thereby adjusting the preset pressure. In other embodiments, only the pushing adjustment member 51 may be provided, with the adjustment member 51 threadedly connected to the housing 10 to drive the movement of the mounting member 31.

[0056] Furthermore, by setting the mounting sleeve 52, since the adjusting member 51 and the mounting sleeve 52 are threadedly connected, when the user's requirements for the preset pressure are not high, there is no need to adjust the preset pressure, and the adjusting member 51 can be removed. Since the supporting head 313 of the mounting member 31 includes a part with a gradually changing outer diameter, the overcurrent protection structure 30 can also be installed by the supporting head 313 and the mounting sleeve 52 abutting against each other.

[0057] Since the regulating structure 50 and the housing 10 need to be connected to the gas cylinder, the regulating structure 50 also includes a second sealing ring 53 and the connector with over-temperature and over-current protection structure also includes a third sealing ring 60.

[0058] It should be noted that the overcurrent protection structure 30 in this application is reversible, while the overtemperature protection structure 20 is irreversible.

[0059] The connector 100 with over-temperature and over-current protection structures includes a first section 131 and a second section 132 via a gas channel 13. The inner diameter of the first section 131 is smaller than that of the second section 132, making it easier to seal the first section 131 when the over-temperature protection structure 20 softens. The mounting part 31 has a pressure relief channel 311 connecting the inlet end 11 and the outlet end 12 to achieve the self-resetting effect of the mounting part 31. The mounting part 31 is provided with an exhaust channel 314, so that when gas flows in from the inlet end 11, it can flow into the exhaust channel 314 and out through the exhaust channel 314 towards the side wall of the gas flow channel 13, thereby flowing into the second section 132, avoiding the phenomenon of buzzing caused by the high-pressure intake airflow hitting the mounting part 31.

[0060] In another embodiment of the present invention, a gas valve is also provided, including the connector 100 with the above-mentioned over-temperature and over-current protection structure, wherein the connector 100 with the over-temperature and over-current protection structure is disposed at the gas inlet end 11 of the gas valve for connecting to a gas cylinder.

[0061] In another embodiment of the present invention, a gas appliance is also provided, including the gas valve described above.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A connector (100) with over-temperature and over-current protection structures, characterized in that, include: The housing (10) has an air inlet (11) and an air outlet (12), and the housing (10) is provided with a gas passage (13); An over-temperature protection structure (20) is movably disposed in the gas channel (13) and faces the gas outlet (12), and is used to soften when the ambient temperature is greater than the preset temperature to block the gas channel (13); An overcurrent protection structure (30) is movably disposed in the gas channel (13) and facing the air inlet (11) for blocking the gas channel (13) when the air inlet flow rate at the air inlet (11) is greater than a preset flow rate.

2. The connector (100) with over-temperature and over-current protection structure according to claim 1, characterized in that, The gas passage (13) includes a first section (131) and a second section (132). The first section (131) faces the inlet end (11), and the second section (132) faces the outlet end (12). The inner diameter of the first section (131) is smaller than the inner diameter of the second section (132). The over-temperature protection structure (20) is located in the first section (131), and the over-current protection structure (30) is located in the second section (132).

3. The connector (100) with over-temperature and over-current protection structure according to claim 2, characterized in that, The overheat protection structure (20) includes a plastic part (21) and a first elastic element (22), the plastic part (21) being used to soften at high temperatures to seal the first segment (131), and the first elastic element (22) being used to apply an elastic force to the plastic part (21).

4. The connector (100) with over-temperature and over-current protection structure according to claim 3, characterized in that, The first segment (131) includes a first part (1311) and a second part (1312). The first part (1311) faces the air outlet (12), and the second part (1312) is connected to the second segment (132). The inner diameter of the first part (1311) is smaller than the inner diameter of the second part (1312). The plastic part (21) is used to seal the first part (1311) at high temperature. The first elastic member (22) is disposed in the second part (1312).

5. The connector (100) with over-temperature and over-current protection structure according to any one of claims 2-4, characterized in that, The second segment (132) includes a third part (1321) and a fourth part (1322). The third part (1321) is connected to the first segment (131), and the fourth part (1322) is connected to the air intake end (11). The inner diameter of the third part (1321) is smaller than the inner diameter of the fourth part (1322). The overcurrent protection structure (30) includes a mounting member (31) and a second elastic member (33). The second elastic member (33) abuts against the overtemperature protection structure (20) and is used to apply an elastic force to the mounting member (31). The mounting member (31) is used to block the opening of the third part (1321) toward the fourth part (1322) when the air flow rate at the air inlet end (11) is greater than the preset flow rate.

6. The connector (100) with over-temperature and over-current protection structure according to claim 5, characterized in that, The second segment (132) further includes a gradient portion (1324), which is connected between the third portion (1321) and the fourth portion (1322). The inner diameter of the gradient portion (1324) gradually increases from the third portion (1321) to the fourth portion (1322), and the gradient portion (1324) is used to abut against the mounting member (31).

7. The connector (100) with over-temperature and over-current protection structure according to claim 5, characterized in that, The mounting component (31) has a pressure relief channel (311) connecting the air inlet end (11) and the air inlet end (11), the pressure relief channel (311) being used to allow the gas flowing into the air inlet end (11) to flow into the first section (131); The second elastic member (33) is used to apply an elastic force to the mounting member (31) so that the mounting member (31) opens the third part (1321) toward the fourth part (1322).

8. The connector (100) with over-temperature and over-current protection structure according to claim 6 or 7, characterized in that, The overcurrent protection structure (30) further includes a first sealing ring (32), which is used to seal the opening of the third part (1321) toward the fourth part (1322).

9. The connector (100) with over-temperature and over-current protection structure according to any one of claims 1-4, characterized in that, The overcurrent protection structure (30) has an exhaust channel (314) at one end facing the air inlet (11), and the exhaust channel (314) extends toward the side wall of the overcurrent protection structure (30).

10. The connector (100) with over-temperature and over-current protection structure according to any one of claims 1-4, characterized in that, The connector (100) with over-temperature and over-current protection structure further includes an adjustment structure (50), which is located at the air inlet (11) and abuts against the over-current protection structure (30) to drive the over-current protection structure (30) to move toward or away from the air inlet (11) to adjust the preset flow rate.

11. The connector (100) with over-temperature and over-current protection structure according to claim 10, characterized in that, The adjustment structure (50) includes an adjustment member (51) and a mounting sleeve (52) threadedly connected to the adjustment member (51). The mounting sleeve (52) is embedded in the inner wall of the air inlet end (11). The adjustment member (51) and the overcurrent protection structure (30) abut against each other.

12. A gas valve, characterized in that, Including the connector (100) with overtemperature and overcurrent protection structure as described in any one of claims 1-11.

13. A gas appliance, characterized in that, Includes the gas valve as described in claim 12.

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