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

Abstract

The invention discloses a connector with an over-temperature and over-current protection structure, a gas valve and a gas appliance. The connector with the over-temperature and over-current protection structure comprises a shell, an air inlet and an air outlet, wherein the shell is provided with an air flow channel, an air inlet and an air outlet; the over-temperature and over-current protection structure is arranged in the airflow channel and comprises an elastic piece and a blocking piece, one end of the elastic piece abuts against the side wall of the airflow channel, the other end of the elastic piece abuts against the blocking piece, and the blocking piece is used for driving the elastic piece to elastically deform when the air inlet flow of the air inlet is larger than the preset flow. And the plugging piece can be softened when the environment temperature is higher than the preset temperature so as to at least reduce the flow area of the air flow channel, or the plugging piece can be softened when the environment temperature is higher than the preset temperature so as to plug the air flow channel. According to the connector with the over-temperature and over-current protection structure, when the flow of the gas inlet is larger than the preset flow, the circulation amount of the gas flow channel can be reduced, or when the environment temperature is larger than the preset temperature, the gas flow channel can be blocked, and the situation that gas burns violently at the stove end is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gas valves, and in particular to a connector, a gas valve and a gas appliance with over-temperature and over-current protection structures. Background Art

[0002] A connector is located at the gas inlet of a gas valve and is used to connect to a gas cylinder, allowing gas to flow from the cylinder into the gas valve and ultimately out of the valve to the stove. However, existing connectors only provide a connection, simply directing gas into the gas valve. They offer no protection against environmental changes, such as excessive intake pressure or high ambient temperature. This can lead to intense combustion on the stove, potentially posing a fire hazard. Summary of the Invention

[0003] In order to solve at least one problem existing in the above-mentioned prior art, according to a first aspect of the present invention, a connector with an over-temperature and over-current protection structure is provided, comprising: A housing, wherein the housing is provided with an air flow channel, an air inlet, and an air outlet; An over-temperature and over-current protection structure is arranged in the air flow channel, and includes an elastic part and a blocking part. One end of the elastic part is abutted against the side wall of the air flow channel, and the other end is abutted against the blocking part. The blocking part is used to drive the elastic part to undergo elastic deformation when the air intake flow rate at the air inlet is greater than a preset flow rate, so that the deformation of the elastic part can at least reduce the flow area of ​​the air flow channel, and the movement of the blocking part can achieve the blocking of the air flow channel; or, the blocking part can soften when the ambient temperature is greater than the preset temperature to achieve the blocking of the air flow channel.

[0004] In some embodiments, the air flow channel includes a first section and a second section, the inner diameter of the first section is smaller than the inner diameter of the second section, the first section is arranged toward the air outlet, and the second section is arranged toward the air inlet; The elastic member is provided at the first section, and the blocking member is movably provided at the second section, and is used to move toward the first section when the air flow rate of the air inlet is greater than a preset flow rate, or to soften when the ambient temperature is greater than a preset temperature, so as to block the opening of the first section toward the second section.

[0005] In some embodiments, the housing is provided with an auxiliary flow channel, the auxiliary flow channel being connected between the first section and the second section; The connector with over-temperature and over-current protection structure further includes a first adjustment structure, which is adjustably arranged in the auxiliary flow channel and is used to adjust the flow rate of gas flowing from the first section to the second section.

[0006] In some embodiments, the air flow channel includes a first section and a second section, the inner diameter of the first section is smaller than the inner diameter of the second section, the first section faces the air outlet, and the second section faces the air inlet, and the elastic member is a spring and is provided at the opening of the first section facing the second section; The spring piece includes an outer fixing ring and a plurality of elastic slices arranged on the outer fixing ring. When the air intake flow rate of the air inlet is greater than a preset flow rate, the plurality of elastic slices can be changed from an open state to a retracted state under the push of the blocking member, so as to at least achieve a reduction in the flow area of ​​the air flow channel.

[0007] In some embodiments, the blocking member is a spherical blocking member.

[0008] In some embodiments, a receiving cavity is provided in the blocking member; The connector with an over-temperature and over-current protection structure also includes a first foaming component and a second foaming component. The first foaming component and the second foaming component are arranged in the receiving cavity. The melting points of the first foaming component and the second foaming component are both lower than the melting point of the blocking component. The first foaming component and the second foaming component are used to foam after mixing to achieve blocking of the airflow channel.

[0009] In some embodiments, the blocking member includes a first covering portion and a second covering portion that are independently formed, and the first covering portion and the second covering portion enclose the receiving cavity.

[0010] In some embodiments, the first foaming component includes a first foaming agent and a first covering film covering the first foaming agent; The second foaming component includes a second foaming agent and a second covering film covering the second foaming agent; The melting points of the first covering film and the second covering film are both lower than the melting point of the blocking member.

[0011] In some embodiments, the material of the first foaming agent includes: polyether polyol, polymer polyol, polyether carbonate, catalyst and flame retardant; The material of the second foaming agent includes isocyanate.

[0012] In some embodiments, the weight ratio of the first foaming agent to the second foaming agent ranges from 1:1 to 1:2.

[0013] In some embodiments, the connector with over-temperature and over-current protection structure also includes a second adjustment structure, which is adjustably arranged at the air inlet and abuts against the blocking member to drive the blocking member to move, so as to adjust the compression amount of the elastic member.

[0014] According to a second aspect of the present invention, a gas valve is provided, comprising the above-mentioned connector with the over-temperature and over-current protection structure.

[0015] According to a third aspect of the present invention, a gas appliance is provided, comprising the above-mentioned gas valve.

[0016] In summary, the connector, gas valve, and gas appliance with over-temperature and over-current protection structures provided by the present invention have the following technical effects: By setting up an over-temperature and over-current protection structure in the shell, when the air intake flow rate of the air inlet is greater than the preset flow rate, the sealing part can drive the elastic part to undergo elastic deformation under the drive of air pressure, so as to at least reduce the flow area of ​​the air flow channel, thereby reducing the amount of gas flowing out of the air outlet, avoiding the risk of violent combustion; at the same time, when the external ambient temperature is greater than the preset temperature, the sealing part can soften and fill the air flow channel to achieve blocking of the air flow channel and cut off the outflow of gas from the air outlet. In this way, protection can be provided when the ambient temperature is too high, avoiding the risk of violent explosion and ensuring the safety of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a connector with an over-temperature and over-current protection structure according to a first embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of a connector with over-temperature and over-current protection structure; Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction; Figure 4 This is a schematic structural diagram of a blocking member, a first foaming component, and a second foaming component according to a second embodiment of the present invention; Figure 5 for Figure 3 An enlarged schematic diagram of position I in FIG; Figure 6 This is a structural diagram of a connector with an over-temperature and over-current protection structure according to a fifth embodiment of the present invention; Figure 7 for Figure 6 A three-dimensional schematic diagram of the elastic member in the expanded state; Figure 8 for Figure 7 A schematic structural diagram of the elastic member in FIG. Figure 9 for Figure 7 Schematic diagram of the structure when the elastic member is in a recovered state.

[0018] Attached photos: 100-connector with over-temperature and over-current protection structure, 10-shell, 11-air flow channel, 111-first section, 112-second section, 12-auxiliary flow channel, 121-installation channel, 1211-outer section, 1212-inner section, 122-inflow channel, 123-outflow channel, 12-air inlet, 13-air outlet, 20-over-temperature and over-current protection structure, 21-elastic part, 211-outer fixing ring, 212-elastic segment, 213-spacing, 214-notch, 215-gap, 22-sealing part, 221-first covering part, 222-second covering part, 223-accommodating chamber, 30-first foaming component, 31-first foaming agent, 32-first covering film, 40-second foaming component, 41-second foaming agent, 42-second covering film, 50-first adjustment structure, 60-second adjustment structure. DETAILED DESCRIPTION

[0019] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Example 1 See also Figures 1 to 4 , a connector 100 with an over-temperature and over-current protection structure provided in the first embodiment of the present invention includes a housing 10 and an over-temperature and over-current protection structure 20.

[0024] Among them, the shell 10 is provided with an air flow channel 11, an air inlet 12 and an air outlet 13; the over-temperature and over-current protection structure 20 is arranged in the air flow channel 11, including an elastic member 21 and a blocking member 22, one end of the elastic member 21 is abutted against the side wall of the air flow channel 11, and the other end is abutted against the blocking member 22, and the blocking member 22 is used to drive the elastic member 21 to undergo elastic deformation when the air intake flow rate of the air inlet 12 is greater than the preset flow rate, so as to at least reduce the flow area of ​​the air flow channel 11 by the deformation of the elastic member 21, and block the air flow channel 11 by the movement of the blocking member 22; or the blocking member 22 can soften when the ambient temperature is greater than the preset temperature to achieve blocking of the air flow channel 11.

[0025] The above-mentioned connector 100 with an over-temperature and over-current protection structure, by arranging an over-temperature and over-current protection structure 20 in the shell 10, when the air intake flow rate of the air inlet 12 is greater than the preset flow rate, the blocking member 22 can, under the drive of the air pressure, drive the elastic member 21 to undergo elastic deformation, so as to at least achieve a reduction in the flow area of ​​the air flow channel 11, thereby reducing the amount of gas flowing out of the air outlet 13, avoiding the risk of violent combustion; at the same time, when the external ambient temperature is greater than the preset temperature, the blocking member 22 can soften and can be filled in the air flow channel 11 to achieve blocking of the air flow channel 11 and cut off the outflow of gas from the air outlet 13. In this way, protection can be provided when the ambient temperature is too high, avoiding the risk of violent explosion and ensuring the safety of users.

[0026] It can be understood that the over-temperature and over-current protection structure 20 of this embodiment is configured to include an elastic part 21 and a sealing part 22, which can not only achieve over-temperature protection but also over-current protection, and has dual protection functions, so that the overall structure of the connector 100 with the over-temperature and over-current protection structure is simple and easy to install.

[0027] When the air flow channel 11 is provided in the housing 10 , it is provided along the axial direction of the housing 10 , the air inlet 12 is provided at one end of the housing 10 , and the air outlet 13 is provided at the other end of the housing 10 .

[0028] It should be noted that when the air flow rate of the air inlet 12 exceeds a preset flow rate, the elastic member 21 is driven to undergo elastic deformation to at least reduce the air flow rate of the air outlet 13. In one embodiment, this refers to a reduction in the flow rate of the air flow channel 11. In another embodiment, this may refer to a reduction in the flow rate of the air flow channel 11 to zero. When the ambient temperature is greater than a preset temperature, the blocking member 22 softens and blocks the air flow channel 11, which means that the flow rate across the entire cross-section of the air flow channel 11 is cut off.

[0029] See also Figure 3In this embodiment, when implementing overcurrent protection, the air flow channel 11 includes a first section 111 and a second section 112, and the inner diameter of the first section 111 is smaller than the inner diameter of the second section 112; the elastic member 21 is provided in the first section 111, and the blocking member 22 is movably provided in the second section 112, and is used to move toward the first section 111 when the intake pressure of the air inlet 12 is greater than the preset pressure, so as to block the opening of the first section 111 toward the second section 112; or is used to soften when the ambient temperature is greater than the preset temperature, so as to block the opening of the first section 111 toward the second section 112. In this way, the air flow channel 11 is provided to include a first section and a second section with different inner diameters, and a step transition surface can be formed between the two, so that the blocking member 22 can be blocked on the step transition surface after movement.

[0030] Specifically, when the flow rate of the air inlet 12 is greater than the preset flow rate, driven by the airflow pressure, the blocking member 22 moves toward the first section 111 and blocks the end of the first section 111 with a smaller diameter. At the same time, it can compress the elastic member 21, thereby blocking the airflow channel 11; or when the ambient temperature is greater than the preset temperature, the blocking member 22 softens and blocks the opening of the first section 111 toward the second section 112, thereby blocking the airflow channel 11 and avoiding the risk of violent combustion caused by the airflow flowing out of the air outlet 13.

[0031] It is understandable that in order to facilitate the installation of the elastic part, the air flow channel may include a third section, which is connected to the first section, and the inner diameter of the third section is smaller than the inner diameter of the first section, thereby forming a step surface for the elastic part to support at the connection between the two.

[0032] In some embodiments, the preset flow rate can be set to 2.8m 3 / h or the preset pressure is 0.7Mpa. When the gas flow rate flowing in from the air inlet 12 is greater than the preset value, the airflow will push the blocking member 22 to move in the direction of the first section 111; or when the ambient temperature is greater than 80°C (preset temperature), the blocking member 22 will soften. After softening, the deformed blocking member 22 gradually extends into the first section 111, blocking the first section 111, thereby achieving the blocking of the airflow channel 11.

[0033] Specifically, the blocking member 22 of this embodiment is a spherical blocking member, which is in arc-shaped contact with the side wall of the airflow channel 11 and has a small contact area. When the gas pressure pushes the spherical blocking member 22 to move, the friction resistance between the spherical blocking member 22 and the side wall of the airflow channel 11 is small, which facilitates the blocking member 22 to push the elastic member 21 to move.

[0034] The above-mentioned connector 100 with an over-temperature and over-current protection structure is configured with an over-temperature and over-current protection structure 20 in the shell 10. When the air flow rate of the air inlet 12 is greater than a preset flow rate or the ambient temperature is greater than a preset temperature, the blocking member 22 can reduce the flow area of ​​the air flow channel 11 or block the air flow channel 11, so as to reduce or cut off the gas flow at the stove end and avoid violent combustion.

[0035] Example 2 See also Figure 3 and Figure 4 On the basis of the first embodiment, the connector 100 with an over-temperature and over-current protection structure in this embodiment is provided with a receiving cavity 223 in order to better achieve the sealing of the airflow channel 11 in a high-temperature environment and ensure the tightness of the sealing of the airflow channel 11. The connector 100 with an over-temperature and over-current protection structure further includes a first foaming component 30 and a second foaming component 40. The first foaming component 30 and the second foaming component 40 are arranged in the receiving cavity 223. The melting point of the first foaming component 30 and the melting point of the second foaming component 40 are both lower than the melting point of the sealing component 22, and can be set to a preset temperature. The first foaming component 30 and the second foaming component 40 are used to foam after mixing to seal the airflow channel 11, so that the first foaming component 30 and the second foaming component 40 are also provided in the sealing component 22. In the manner of the foaming component 40, as the external environment rises, the first foaming component 30 and the second foaming component 40 melt first, and then the sealing component 22 located on the outside gradually softens. Under the blowing of the air pressure of the air inlet 12, the sealing component 22 rolls in the air flow channel 11, and the first foaming component 30 and the second foaming component 40 are accelerated to mix and foam and expand. As the ambient temperature continues to rise, the melting point of the sealing component 22 is reached, and the sealing component 22 melts and fills in the air flow channel 11. The first foaming component 30 and the second foaming component 40 foam and expand and continue to fill the air flow channel 11, blocking the remaining small gap between the sealing component 22 and the air flow channel 11, realizing double sealing of the air flow channel 11, and ensuring the sealing of the sealing. At this time, no gas flows out of the air outlet 13, and over-temperature protection is achieved.

[0036] In which, the first foaming component 30 of this embodiment includes a first foaming agent 31 and a first coating film 32 coated on the outside of the first foaming agent 31; the second foaming component 40 includes a second foaming agent 41 and a second coating film 42 coated on the outside of the second foaming agent 41; the melting points of the first coating film 32 and the second coating film 42 are both lower than the melting point of the blocking member 22, wherein the melting points of the first coating film 32 and the second coating film 42 can be the same or different. When the melting points of the two can be set to the same, the preset temperature at this time can be set to 80°C; when the melting points of the two are different, the melting point of one can be set to the preset temperature, and the melting point of the other can be set to slightly higher than the preset temperature. In this way, as the ambient temperature rises, when the preset temperature is reached, the first coating film 32 and the second coating film 42 melt first, so that the first foaming agent 31 and the second foaming agent 41 inside can be mixed and foamed. Further, as the ambient temperature rises, the blocking member 22 melts, and the foamed material is sealed in the gas flow channel.

[0037] In some embodiments, the material of the first coating film 32 and the second coating film 42 is polyurethane with a melting point of about 80°C. The material of the first foaming agent 31 includes: polyether polyol, polymer polyol, polyether carbonate, catalyst, and flame retardant; the material of the second foaming agent 41 includes isocyanate. The sealing part 22 of this embodiment can be set to polypropylene. When the external environment reaches 80°C, the first coating film 32 and the second coating film 42 gradually melt, and the sealing part 22 gradually softens. As the ambient temperature continues to rise, for example, reaching about 115°C-150°C, the sealing part 22 will gradually melt and become fluid, and fill in the air flow channel 11, thereby achieving a sealing effect; at the same time, as the sealing part 22 melts, the first foaming agent 31 and the first foaming agent 31 mix and foam, and the volume expands and becomes larger and fills in the air flow channel 11, achieving a tighter sealing effect.

[0038] Furthermore, the weight ratio of the first foaming agent 31 to the second foaming agent 41 of this embodiment is in the range of 1:1-1:2. In this way, by setting this mass ratio, the two foaming agents can achieve the effect of rapid mixing and foaming, for example, rapid foaming can be achieved within 5 minutes, and the gas flow channel can be quickly blocked, so that the user can have time to escape.

[0039] The blocking member 22 of this embodiment can be made of polypropylene. When the external environment reaches 80° C., the blocking member 22 gradually softens, but has not yet reached the melting point of the blocking member 22 .

[0040] In this embodiment, when the first foaming component 30 and the second foaming component 40 are arranged in the sealing part 22, the sealing part 22 includes an independently formed first covering part 221 and a second covering part 222. The first covering part 221 and the second covering part 222 enclose a receiving cavity 223. The independently formed first covering part 221 and the second covering part 222 facilitate the placement of the first foaming component 30 and the second foaming component 40 therein, and subsequently the first covering part 221 and the second covering part 222 are connected into a whole, for example, by ultrasonic welding or interference pressing for assembly.

[0041] It can be understood that this over-temperature protection method is an irreversible, one-time use method.

[0042] The above-mentioned connector 100 with an over-temperature and over-current protection structure has a first foaming agent 31 and a second foaming agent 41 in the sealing part 22. In a high-temperature environment, not only can the sealing part 22 melt to seal the airflow channel 11, but the first foaming agent 31 and the second foaming agent 41 can also foam and expand after mixing to fill the airflow channel 11, thereby achieving secondary sealing of the airflow channel 11 and ensuring the tightness of the sealing of the airflow channel 11.

[0043] Example 3 See also Figure 3 and Figure 5 The connector 100 with an over-temperature and over-current protection structure of this embodiment has substantially the same structure as the connector 100 with an over-temperature and over-current protection structure in the first or second embodiment, except that: The housing 10 of this embodiment is provided with an auxiliary flow channel 12. The connector 100 with over-temperature and over-current protection structure further includes a first adjustment structure 50. The auxiliary flow channel 12 is connected between the first section 111 and the second section 112. The first adjustment structure 50 is adjustable and provided on the auxiliary flow channel 12. It is used to adjust the flow rate of the gas from the first section 111 to the second section 112 after the blocking member 22 blocks the opening of the first section 111. The flow rate of the auxiliary flow channel 12 is much smaller than the flow rate of the gas flow channel 11, so that when the blocking member 22 blocks the opening of the first section 111, the flow rate of the gas from the first section 111 to the second section 112 is reduced. After the gas is sealed, the gas flowing in from the air inlet 12 enters the second section 112, then flows into the first section 111 through the auxiliary flow channel 12, and flows out through the gas outlet 13. At this time, the fire on the stove end is very small and the user will turn off the gas stove, but the gas cylinder is in the open state, and the gas can still continue to flow into the connector 100 with the over-temperature and over-current protection structure. When the air pressure in the connector 100 with the over-temperature and over-current protection structure reaches equilibrium, the elastic force of the elastic member 21 drives the blocking member 22 to return to its original position, thereby opening the opening of the first section 111. The first adjustment structure 50 is used to adjust the flow rate of the auxiliary flow channel 12, thereby adjusting the length of time it takes for the blocking member 22 to return to its original position.

[0044] Specifically, see Figure 5 The auxiliary flow channel 12 includes an installation channel 121, an inflow channel 122 and an outflow channel 123 that are interconnected. The first adjustment structure 50 can be adjustably installed on the installation channel 121. The inflow channel 122 is connected to the second section 112, and the outflow channel 123 is connected to the first section 111. In this way, when the blocking member 22 blocks the opening of the first section 111 toward the second section 112, the air flow can only flow from the inflow channel 122 to the outflow channel 123, and then flow out in the direction of the air outlet 13 through the outflow channel 123.

[0045] The first adjustment structure 50 of this embodiment is an adjustment screw, and the flow rate between the inflow channel 122 and the outflow channel 123 is adjusted by turning the adjustment screw.

[0046] Specifically, when the auxiliary flow channel 12 of this embodiment is set, in order to be able to open an inflow channel 122 and an outflow channel 123 connected to the mounting channel 121 at the same position of the shell 10, the extension direction of the inflow channel 122 and the extension direction of the second section 112 have an acute angle, and the extension direction of the outflow channel 123 is set perpendicular to the extension direction of the second section 112. In this way, by setting the inclined inflow channel 122, when it is connected to the mounting channel 121 together with the outflow channel 123, a smaller cross-section mounting channel 121 can be set. Compared with opening the inflow channel 122 and the outflow channel 123 perpendicular to the second section 112, it is necessary to open a larger cross-sectional area mounting channel 121, which will lead to a reduction in the structural strength of the shell 10.

[0047] Furthermore, since the inflow channel 122 is arranged in an inclined manner relative to the second section 112, it is necessary to use a drill bit to drill out the inflow channel 122 on the shell 10. Therefore, the size of the inflow channel 122 is larger than the size of the outflow channel 123. By setting the inflow channel 122 with a larger size, it is convenient for the drill bit to drill on the shell 10 in an inclined manner. By setting the outflow channel 123 with a smaller size, when the sealing member 22 blocks the gas flow channel, gas with a smaller flow rate can flow out through the outflow channel 123.

[0048] Furthermore, when the installation channel 121 of this embodiment is set, the installation channel 121 includes an outer section 1211 and an inner section 1212. The inner section 1211 connects the inflow channel 122 and the outflow channel 123. The size of the outer section 1212 is larger than the size of the inner section 1211. In this way, by setting the larger outer section 1211, it can be adapted to the size of the screw when installed on the shell 10, and at the same time it is convenient for the drill bit to open the inclined inflow channel 122; by setting the smaller inner section 1212, the structural strength of the shell 10 can be guaranteed.

[0049] It is understood that when the blocking member 22 softens and fills the first section 111, it can block the opening of the outflow channel 123. Furthermore, after the first and second foaming components 30 and 40 expand and foam, they can also block the opening of the inflow channel 122. The auxiliary flow channel 12 and the first regulating structure 50 of this embodiment are suitable for use when the intake pressure of the air inlet 12 is greater than a preset pressure and the blocking member 22 blocks the opening of the first section 111 toward the second section 112.

[0050] The above-mentioned connector 100 with an over-temperature and over-current protection structure, by providing an auxiliary flow channel 12 on the shell 10 and providing a first adjustment structure 50 at the auxiliary flow channel 12, can guide the gas flowing in from the air inlet 12 to the air outlet 13 after the sealing member 22 blocks the air flow channel 11, so that when the user turns off the stove end, the air pressure in the connector 100 with an over-temperature and over-current protection structure can gradually return to a balanced state, so that under the drive of the elastic force of the elastic member 21, the sealing member 22 returns to its original position, thereby realizing the opening of the first section 111 toward the second section 112, and the sealing member 22 automatically resets to facilitate subsequent continued use.

[0051] Example 4 See also Figure 3 The connector 100 with an over-temperature and over-current protection structure of this embodiment is further provided with a second adjustment structure 60 on the basis of embodiment one, embodiment two or embodiment three. The second adjustment structure 60 is adjustably arranged at the air inlet 12 and abuts against the blocking member 22, and is used to drive the blocking member 22 to move so as to adjust the compression amount of the elastic member 21. Specifically, the second adjustment structure 60 of this embodiment is an adjusting bolt. As the adjusting bolt rotates relative to the side wall of the air inlet 12, the blocking member 22 is driven to compress or release the elastic member 21, so as to adjust the time length for the elastic member 21 to drive the blocking member 22 to return to its original position after the auxiliary flow channel 12 releases the gas and equilibrium is reached in the connector 100 with an over-temperature and over-current protection structure.

[0052] It can be understood that since gas needs to be passed through the adjusting bolt and the adjusting bolt is pressed against the sealing piece 22, when the gas flows in from the adjusting bolt, in order to avoid the gas hitting the sealing piece 22 and causing a buzzing sound, a pressure relief channel is provided at the end where the adjusting bolt and the sealing piece 22 are pressed against each other, and the gas can flow out from the pressure relief channel into the second section 112.

[0053] The above-mentioned connector 100 with an over-temperature and over-current protection structure can adjust the compression amount of the elastic part 21 by setting a second adjustment structure 60 at the air inlet 12, thereby adjusting the length of time that the elastic part 21 opens the opening of the first section 111 toward the second section 112 of the blocking part 22, so that users can use it according to their own needs.

[0054] Example 5 See also Figures 6 to 9The difference between the connector 100 with an over-temperature and over-current protection structure of this embodiment and the connector 100 with an over-temperature and over-current protection structure in the first, second or third embodiment is that the elastic member 21 of this embodiment is a spring, the air flow channel 11 includes a first section 111 and a second section 112, the inner diameter of the first section 111 is smaller than the inner diameter of the second section 112, and the elastic member 21 is provided at the opening of the first section 111 toward the second section 112; the elastic member 21 includes an outer fixing ring 211 and a plurality of elastic segments 212 provided on the outer fixing ring 211, and the plurality of elastic segments 212 are provided on the outer fixing ring 211. When the pressure at the air inlet 12 is greater than the preset pressure, the elastic slices 212 can be changed from an open state to a retracted state under the push of the blocking member 22, so as to at least reduce the flow area of ​​the air flow channel 11. In this way, driven by the airflow, the blocking member 22 can push the multiple elastic slices 212 to adjust from the open state to the retracted state, thereby reducing or disconnecting the flow area of ​​the air flow channel 11. At this time, the airflow flowing into the air inlet 12 cannot flow out through the air outlet 13 or cannot flow out of the air outlet 13 in large quantities, thereby avoiding the dangerous situation of excessive flames at the stove end.

[0055] Specifically, see Figure 5 When the elastic slice 212 is in the retracted state, there is a gap 215 between each two adjacent elastic slices 212, and the elastic slice 212 can apply elastic force to the blocking piece 22 to restore it to the open state. In this way, after the blocking piece 22 is blocked on the shrapnel, a small amount of airflow flowing in from the air inlet 12 can still flow out through the air outlet 13. At this time, the flame at the stove end is decreasing, and the user will turn off the gas source. The gas can only flow in from the air inlet 12, but cannot flow out from the air outlet 13. When the air pressure in the shell 10 is the same as the air pressure at the gas cylinder end, the blocking piece 22 is driven back to its original position under the action of the elastic force of the elastic slice 212, and it restores itself to the open state. The user can turn on the gas appliance and continue to use it.

[0056] Furthermore, the spring segments of this embodiment are made of steel to ensure their structural strength and elastic properties. Specifically, during the molding process, the elastic segments 212 will bend and retract or bend and expand relative to the outer retaining ring 211. Therefore, the elastic segments 212 and the outer retaining ring 211 are integrally formed to facilitate molding. In the initial state, the spring segment is flat, and the flat spring segment is cut to form the elastic segments 212.

[0057] Further, see Figure 9When the elastic segments 212 are in the retracted state, the width l of the gap 215 between each two connected elastic segments 212 ranges from 0.1 mm to 0.3 mm. The total area of ​​the multiple gaps 215 constitutes the flow area of ​​the fluid after the elastic segments 212 are retracted. In this way, the size of the gap 215 is not too large, and a small amount of gas can flow in from the air inlet 12, pass through the gap 215, and then flow out from the air outlet 13. At this time, a small amount of flame can be generated at the stove end, and the reduction of the flame can serve as a reminder to the user to turn off the stove. The size of the gap 215 is also not too small to avoid the situation where combustion cannot be performed when the gas outflow at the stove end is small.

[0058] For example, the width of the gap 215 can be set to 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, or 0.3 mm, etc., which is not limited here.

[0059] Specifically, in this embodiment, four elastic slices 212 are provided, so that the area of ​​each elastic slice 212 is not too large, that is, the connection area between each elastic slice 212 and the outer fixing ring 211 is not too large to make it difficult to elastically deform, and the connection area between each elastic slice 212 and the outer fixing ring 211 is not too small to have sufficient structural strength, and to avoid the connection area being too small to change from an open state to a retracted state under the push of the sealing member 22 under a smaller air pressure.

[0060] See also Figure 7 and Figure 8 When the elastic slices 212 are in the open state, the width L of the spacing 213 between each two adjacent elastic slices 212 gradually increases from the end connected to the outer fixing ring 211 to the end away from the outer fixing ring 211. When the elastic slices 212 are in the open state, the width L of the spacing 213 at the maximum width position between each two adjacent elastic slices 212 is in the range of 0.7mm-1mm. Specifically, when the elastic slices 212 are in the open state, the shape of the spacing 213 between each two adjacent elastic slices 212 is similar to a triangle, which is equivalent to the length of the base of the triangle being in the range of 0.7mm-1mm. By setting this range, it can be adapted to the air flow rate of the air inlet 12 to ensure that a larger flow rate can flow into the air inlet 12 to meet the normal usage requirements.

[0061] In some embodiments, the width L of the interval 213 at the maximum width position can be set to values ​​such as 0.7 mm, 0.8 mm, 0.9 mm, and 1.0 mm according to the intake air flow rate, which is not limited here.

[0062] See also Figure 8In one embodiment of the present invention, in order to prevent the elastic slices 212 from scratching the sealing member 22, a notch 214 is provided at one end of each elastic slice 212 away from the outer fixing ring 211. In this way, when the elastic slice 212 is in the open state, the provision of the notch 214 is equivalent to removing the tip of the elastic slice 212, thereby avoiding the risk of the elastic slice 212 being scratched by the tip when it contacts the sealing member 22 in a pointed manner; further, through the provision of the notch 214, when multiple elastic slices 212 are in the open state, part of the sealing member 22 can be located in the notch 214, having a certain contact area with the elastic slice 212, and being able to maintain a stable contact with the elastic slice 212.

[0063] The above-mentioned connector 100 with an over-temperature and over-current protection structure is configured such that the elastic member 21 is in the form of a spring, and the spring includes an outer fixing ring 211 and a plurality of elastic segments 212 arranged on the outer fixing ring 211. The air flow volume of the air flow channel 11 is adjusted by opening or retracting the elastic segments 212. At the same time, when the elastic segments 212 are in a retracted state, there is a gap 215 between the two, so that a small amount of air flow can flow out from the air outlet 13, so that the air pressure in the shell 10 can reach balance when the stove end is in a closed state, and the spring can drive the sealing member 22 back to its original position, thereby realizing an automatic reset function, which is convenient for users to use.

[0064] Example 6 The sixth embodiment further provides a gas valve, comprising the above-mentioned connector 100 with over-temperature and over-current protection structure.

[0065] The above-mentioned gas valve, since the connector 100 with over-temperature and over-current protection structure installed in the gas valve is provided with an over-temperature and over-current protection structure 20, can reduce the flow rate of the air flow channel 11 when the flow rate of the air inlet 12 is greater than the preset flow rate, or block the air flow channel 11 when the ambient temperature is greater than the preset temperature, so as to avoid the risk of violent combustion of gas at the stove end.

[0066] Example 7 The seventh embodiment further provides a gas appliance, comprising the above-mentioned gas valve.

[0067] The above-mentioned gas appliance, since the gas valve installed on the gas appliance is provided with an over-temperature and over-current protection structure 20, can reduce the flow rate of the air flow channel 11 when the flow rate of the air inlet 12 is greater than the preset flow rate, or block the air flow channel 11 when the ambient temperature is greater than the preset temperature, so as to avoid the risk of violent combustion of gas at the stove end.

[0068] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A connector (100) having an over-temperature and over-current protection structure, characterized in that: include: A housing (10), wherein the housing (10) is provided with an air flow channel (11), an air inlet (12) and an air outlet (13); An over-temperature and over-current protection structure (20) is arranged in the air flow channel (11), and includes an elastic member (21) and a blocking member (22). One end of the elastic member (21) is in contact with the side wall of the air flow channel (11), and the other end is in contact with the blocking member (22). The blocking member (22) is used to drive the elastic member (21) to undergo elastic deformation when the air flow rate of the air inlet (12) is greater than a preset flow rate, so as to at least reduce the flow area of ​​the air flow channel (11) by the deformation of the elastic member (21), or to block the air flow channel (11) by the movement of the blocking member (22); or, the blocking member (22) can soften when the ambient temperature is greater than the preset temperature, so as to block the air flow channel (11).

2. The connector (100) with over-temperature and over-current protection structure according to claim 1, characterized in that: The air flow channel (11) comprises a first section (111) and a second section (112), the inner diameter of the first section (111) is smaller than the inner diameter of the second section (112), the first section (111) is arranged toward the air outlet (13), and the second section (112) is arranged toward the air inlet (12); The elastic member (21) is provided at the first section (111), and the blocking member (22) is movably provided at the second section (112), and is used to move toward the first section (111) when the air flow rate of the air inlet (12) is greater than a preset flow rate, or to soften when the ambient temperature is greater than a preset temperature, so as to block the opening of the first section (111) toward the second section (112).

3. The connector (100) with over-temperature and over-current protection structure according to claim 2, characterized in that: An auxiliary flow channel (12) is provided on the housing (10), and the auxiliary flow channel (12) is connected between the first section (111) and the second section (112); The connector (100) with an over-temperature and over-current protection structure further includes a first adjustment structure (50), which is adjustably arranged on the auxiliary flow channel (12) and is used to adjust the flow rate of gas flowing from the first section (111) to the second section (112).

4. The connector (100) with over-temperature and over-current protection structure according to claim 1, characterized in that: The air flow channel (11) comprises a first section (111) and a second section (112); the inner diameter of the first section (111) is smaller than the inner diameter of the second section (112); the first section (111) faces the air outlet (13); the second section (112) faces the air inlet (12); the elastic member (21) is a spring sheet and is provided at an opening of the first section (111) facing the second section (112); The spring piece comprises an outer fixing ring (211) and a plurality of elastic segments (212) arranged on the outer fixing ring (211). When the air intake flow rate of the air inlet (12) is greater than a preset flow rate, the plurality of elastic segments (212) can be pushed by the blocking member (22) to change from an open state to a retracted state, so as to at least reduce the flow area of ​​the air flow channel (11).

5. The connector (100) with over-temperature and over-current protection structure according to any one of claims 1 to 4, characterized in that: The blocking member (22) is a spherical blocking member (22).

6. The connector (100) with over-temperature and over-current protection structure according to any one of claims 1 to 4, characterized in that: The blocking member (22) is provided with a receiving cavity (223); The connector (100) with an over-temperature and over-current protection structure further includes a first foaming component (30) and a second foaming component (40), wherein the first foaming component (30) and the second foaming component (40) are arranged in the receiving cavity (223), the melting point of the first foaming component (30) and the melting point of the second foaming component (40) are both lower than the melting point of the blocking member (22), and the first foaming component (30) and the second foaming component (40) are used to foam after mixing to achieve blocking of the airflow channel (11).

7. The connector (100) with over-temperature and over-current protection structure according to claim 6, characterized in that: The blocking member (22) comprises a first covering portion (221) and a second covering portion (222) which are independently formed, and the first covering portion (221) and the second covering portion (222) enclose and form the receiving cavity (223).

8. The connector (100) with over-temperature and over-current protection structure according to claim 6, characterized in that: The first foaming component (30) includes a first foaming agent (31) and a first coating film (32) coating the first foaming agent (31); The second foaming component (40) includes a second foaming agent (41) and a second coating film (42) coating the second foaming agent (41); The melting points of the first coating film (32) and the second coating film (42) are both lower than the melting point of the blocking member (22).

9. The connector (100) with over-temperature and over-current protection structure according to claim 8, characterized in that: The materials of the first foaming agent (31) include: polyether polyol, polymer polyol, polyether carbonate, catalyst and flame retardant; The material of the second foaming agent (41) includes isocyanate.

10. The connector (100) with over-temperature and over-current protection structure according to claim 9, characterized in that: The weight ratio of the first foaming agent (31) to the second foaming agent (41) is in the range of 1:1-1:

2.

11. The connector (100) with over-temperature and over-current protection structure according to any one of claims 1 to 4, characterized in that: The connector (100) with the over-temperature and over-current protection structure further includes a second adjustment structure (60), which is adjustably arranged at the air inlet (12) and abuts against the blocking member (22) to drive the blocking member (22) to move, thereby adjusting the compression amount of the elastic member (21).

12. Gas valve, characterized in that, The invention comprises a connector (100) with an over-temperature and over-current protection structure as claimed in any one of claims 1 to 11.

13. A gas appliance, characterized in that: Comprising the gas valve as claimed in claim 12.

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