Connector with adjustment structure, gas valve and gas appliance

Abstract

This utility model discloses a connector, gas valve, and gas appliance with an adjustable structure. The connector with the adjustable structure includes: a housing with an airflow channel inside and an inlet and an outlet at both ends; an auxiliary channel on the housing connected to the airflow channel; an overcurrent protection structure movably disposed within the airflow channel, including a blocking member and a first elastic member. The blocking member moves towards the outlet to block the airflow channel when the airflow rate at the inlet exceeds a preset flow rate; the first elastic member applies an elastic force to the blocking member to move towards the inlet to open the airflow channel; and a first adjusting structure disposed in the auxiliary channel to adjust the opening degree of the opening connecting the auxiliary channel to the airflow channel. In this utility model, the connector with the adjustable structure allows the overcurrent protection structure to block the airflow channel when the airflow rate at the inlet exceeds a preset flow rate, ensuring the safety of the gas valve.

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 an adjustment structure. Background Technology

[0002] A connector is a device installed at the gas inlet of a gas valve and used to connect to a gas cylinder to allow gas to flow from the cylinder into the gas valve. Existing connectors only provide a connection function; they lack protective capabilities when external environmental conditions change, such as excessive inlet pressure. This can lead to a high flow rate at the gas valve outlet, potentially causing violent combustion. 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 adjustment structure is provided, comprising:

[0004] The housing has an airflow channel inside and an air inlet and an air outlet at both ends. An auxiliary channel is provided on the housing and is connected to the airflow channel.

[0005] An overcurrent protection structure is movably disposed within the airflow channel, including a blocking member and a first elastic member. The blocking member is used to move towards the air outlet to block the airflow channel when the airflow rate at the air inlet is greater than a preset flow rate. The first elastic member is used to apply an elastic force to the blocking member to make the blocking member move towards the air inlet to open the airflow channel.

[0006] A first adjustment structure is provided in the auxiliary flow channel for adjusting the opening degree of the opening of the auxiliary flow channel connecting to the airflow channel.

[0007] In some embodiments, the airflow 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, and the first section faces the air outlet, the second section faces the air inlet, the first elastic member is disposed in the first section, the sealing member is disposed in the second section, and the sealing member is used to seal the opening of the first section facing the second section.

[0008] In some embodiments, the sealing element is a spherical sealing element.

[0009] In some embodiments, the connector with the adjustment structure further includes a second adjustment structure, which is adjustablely mounted on the air inlet and abuts against the sealing member, for adjusting the distance between the sealing member and the opening of the first segment.

[0010] In some embodiments, the auxiliary flow channel includes an interconnected installation channel, an inflow channel, and an outflow channel. The first adjustment structure is adjustablely installed in the installation channel. When the blocking member is blocking the airflow channel, the inflow channel and the outflow channel are located on both sides of the blocking member, and the flow area of ​​the inflow channel and / or the flow area of ​​the outflow channel is smaller than the flow area of ​​the airflow channel.

[0011] In some embodiments, the extension direction of the inflow channel and the extension direction of the airflow channel have a first included angle α, and the extension direction of the outflow channel and the extension direction of the airflow channel both have a second included angle θ, wherein 0°<α≤90°, 0°<θ≤90°.

[0012] In some embodiments, the cross-sectional area of ​​the inflow channel is larger than the cross-sectional area of ​​the outflow channel.

[0013] In some embodiments, the installation channel includes an outer section and an inner section, the inner section connecting the inflow channel and the outflow channel, and the cross-sectional area of ​​the outer section is larger than the cross-sectional area of ​​the inner section.

[0014] In some embodiments, the connector with the adjustment structure further includes an over-temperature protection structure, which is arranged in parallel with the over-current protection structure within the airflow channel. This structure is used to soften when the ambient temperature is higher than a preset temperature, thereby blocking the airflow channel.

[0015] In another aspect, a gas valve is provided, including the connector with the adjustment structure described above.

[0016] In another aspect, this utility model provides a gas appliance including the gas valve described above.

[0017] In summary, the connector, gas valve, and gas appliance with adjustment structure provided by this utility model have the following technical effects:

[0018] By incorporating an overcurrent protection structure within the housing, when the airflow rate at the inlet exceeds a preset flow rate, the sealing element can move towards the outlet to block the airflow path. Furthermore, a first adjustment structure is provided on the housing to adjust the opening of the auxiliary flow path connecting to the airflow path, thereby adjusting the size of the connection between the auxiliary flow path and the airflow path. This adjusts the time it takes for the gas pressure within the gas valve and the inlet to return to equilibrium, i.e., adjusting the time it takes for the sealing element to open and reopen after blocking the airflow path. Users can adjust this according to their needs, increasing the practicality of the connector with the adjustment structure. Attached Figure Description

[0019] Figure 1This is a perspective view of a connector with an adjustment structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of a connector with an adjustment mechanism;

[0021] Figure 3 for Figure 2 A cross-sectional schematic diagram of a connector with an adjustment structure;

[0022] Figure 4 for Figure 3 Enlarged view of point I in the middle;

[0023] Figure 5 for Figure 3 A structural diagram of the plastic parts in the diagram.

[0024] Attached Figure: 100-Connector with adjustment structure, 10-Housing, 11-Airflow channel, 111-First section, 112-Second section, 113-Step surface, 114-Third section, 115-Fourth section, 12-Air inlet, 13-Air outlet, 14-Auxiliary channel, 141-Mounting channel, 1411-Outer section, 1412-Inner section, 142-Inflow channel, 143-Outflow channel, 20-Overflow protection structure, 21-Blocking component, 22-First elastic component, 30-First adjustment structure, 40-Overtemperature protection structure, 41-Plastic component, 411-Flow groove, 42-Second elastic component, 50-Second adjustment structure, 51-Adjusting component, 52-Mounting sleeve, 60-Holding piece. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Please see Figures 1 to 5 The connector 100 with an adjustment structure provided in this embodiment of the utility model includes a housing 10, an overcurrent protection structure 20, and a first adjustment structure 30.

[0030] Please refer to Figure 1 To the diagram Figure 3 The housing 10 has an airflow channel 11 inside, and an air inlet 12 and an air outlet 13 at both ends. The housing 10 has an auxiliary channel 14 connected to the airflow channel 11. An overcurrent protection structure 20 is movably disposed in the airflow channel 11, including a blocking member 21 and a first elastic member 22. The blocking member 21 is used to move towards the air outlet 13 to block the airflow channel 11 when the airflow rate at the air inlet is greater than the preset flow rate. The first elastic member 22 is used to apply an elastic force to the blocking member 21 so that the blocking member 21 moves towards the air inlet 12 to open the airflow channel 11. A first adjustment structure 30 is disposed in the auxiliary channel 14 and is used to adjust the opening degree of the auxiliary channel 14 connected to the airflow channel 11.

[0031] The connector 100 with the aforementioned adjustment structure, by providing an overcurrent protection structure 20 inside the housing 10, allows the sealing member 21 to move towards the outlet 13 to block the airflow channel 11 when the airflow rate at the inlet 12 exceeds the preset flow rate. Furthermore, a first adjustment structure 30 is provided on the housing 10, which can adjust the opening degree of the auxiliary channel 14 connecting to the airflow channel 11, i.e., adjust the size of the connection opening between the auxiliary channel 14 and the airflow channel 11. This adjusts the time it takes for the gas pressure in the gas valve and the inlet 12 to return to equilibrium, i.e., adjusts the time it takes for the sealing member 21 to open and reopen after blocking the airflow channel 11. Users can adjust this according to their needs, increasing the practicality of the connector 100 with the adjustment structure.

[0032] Specifically, when the airflow channel 11 is blocked by the sealing member 21, the airflow 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. The first section 111 faces the air outlet 13, and the second section 112 faces the air inlet 12. The first elastic member 22 is disposed in the first section 111, and the sealing member 21 is disposed in the second section 112. The sealing member 21 is used to block the opening of the first section 111 facing the second section 112. Thus, as the air pressure at the air inlet 12 increases, the airflow pushes the sealing member 21 to move towards the first section 111, compressing the first elastic member 22 and blocking the opening of the first section 111 facing the second section 112, thereby blocking the airflow channel 11.

[0033] Understandably, when the airflow channel 11 is in a flowing state, there is a gap between the sealing member 21 and the inner wall of the second section 112, so that gas flows into the first section 111 and flows out towards the outlet 13. In other embodiments, when blocking the airflow channel 11, one end of the first elastic member 22 may abut against the sealing member 21, and the other end may abut against the inner wall of the outlet 13. The airflow drives the sealing member 21 to move towards the outlet 13, compressing the first elastic member 22. For example, the first elastic member 22 may be set as a tower spring. The sealing member 21 blocks the outlet 13, thereby blocking the airflow channel 11. Or in another embodiment, when blocking the airflow channel, the sealing member 21 may expand and deform under the action of the airflow to block the airflow channel.

[0034] Understandably, since the sealing element 21 seals the opening of the first segment 111 towards the second end, and the inner diameter of the first segment 111 is smaller than the inner diameter of the second segment 112, the connection between the first segment 111 and the second segment 112 has a stepped surface 113, such as... Figure 4 As shown, the sealing element 21 abuts against the stepped surface 113 to block the airflow channel 11.

[0035] Specifically, in this embodiment, the sealing member 21 is a spherical sealing member 21, which makes the molding structure of the sealing member 21 simpler and easier to mold. For example, stainless steel can be used to ensure service life. At the same time, the friction between the arc-shaped surface of the sealing member 21 and the side wall of the airflow channel 11 is small, which makes it easier to move under the drive of airflow.

[0036] Please see Figure 4In one embodiment of this utility model, when setting up the auxiliary flow channel 14, the auxiliary flow channel 14 includes an interconnected installation channel 141, an inflow channel 142, and an outflow channel 143. The first adjustment structure 30 is adjustablely installed in the installation channel 141. When the sealing member 21 is used to block the opening of the first section 111 towards the second section 112, the inflow channel 142 and the outflow channel 143 are located on both sides of the sealing member 21. Specifically, the inflow channel 142 connects to the second section 112, and the outflow channel 143 connects to the first section 111. The flow area of ​​the inflow channel 142 and / or the flow area of ​​the outflow channel 143 is smaller than the flow area of ​​the airflow channel 11. Thus, when After the sealing component 21 blocks the opening of the first section 111 towards the second end, the airflow can only flow from the inflow channel 142 to the outflow channel 143, and then flow out towards the gas outlet 13 through the outflow channel 143. The flow area of ​​the inflow channel 142 and / or the flow area of ​​the outflow channel 143 is smaller than the flow area of ​​the airflow channel 11. At this time, the flame at the stove end is very small, and the user will turn off the gas stove. However, the gas cylinder is in the open state, and the gas can still continuously flow into the connector 100 with the adjustment structure. When the gas pressure in the connector 100 with the adjustment structure reaches equilibrium, under the action of the elastic force of the first elastic component 22, the sealing component 21 is driven to return to its original position to open the airflow channel.

[0037] In this embodiment, the first adjustment structure 30 is an adjustment screw, which adjusts the flow rate between the inflow channel 142 and the outflow channel 143 by turning the adjustment screw.

[0038] Specifically, in this embodiment, in order to open the auxiliary flow channel 14 at the same position on the housing 10, the extension direction of the inflow channel 142 and the extension direction of the airflow channel 11 have a first angle α, and the extension direction of the outflow channel 143 and the extension direction of the airflow channel 11 both have an angle θ, where 0°<α≤90° and 0°<θ≤90°. Specifically, the angle α between the extension direction of the inflow channel 142 and the extension direction of the second segment 112 is an acute angle, and the angle θ between the extension direction of the outflow channel 143 and the extension direction of the second segment 112 is 90°. In this way, by setting the inclined inflow channel 142, when it is connected to the installation channel 141 together with the outflow channel 143, a smaller cross-sectional area installation channel 141 can be set. Compared with the arrangement of both the inflow channel 142 and the outflow channel 143 perpendicular to the airflow channel 11, a larger cross-sectional area installation channel 141 needs to be opened, which will result in a decrease in the structural strength of the housing 10. In another embodiment, the extension direction of the inflow channel 142 may be perpendicular to the extension direction of the second segment 112, and the extension direction of the outflow channel 143 may have an acute angle relative to the first segment 111. This can also achieve the effect of flow and ensure that the installation channel 141 has a small opening area.

[0039] Furthermore, since the inflow channel 142 is inclined relative to the airflow channel 11, and the inflow channel 142 needs to be drilled out of the housing 10 by a drill bit, the size of the inflow channel 142 is larger than the size of the outflow channel 143. Thus, by setting the larger inflow channel 142, it is easier for the drill bit to drill in the housing 10 in an inclined manner. By setting the smaller outflow channel 143, when the sealing member 21 blocks the airflow channel 11, the gas with a smaller flow rate flows out through the outflow channel 143. That is, the gas flow rate is controlled by the outflow channel 143, which controls the time when the first elastic member 22 drives the sealing member 21 to open the first end 111.

[0040] Furthermore, in this embodiment, the installation channel 141 includes an outer section 1411 and an inner section 1412. The inner section 1412 connects the inflow channel 142 and the outflow channel 143. The cross-sectional area of ​​the outer section 1411 is larger than that of the inner section 1412. Thus, by setting the outer section 1411 to a larger size, it can be adapted to the size of the screw installed on the housing 10, and at the same time, it is convenient for the drill bit to open the inflow channel 142 of the inclined section. By setting the inner section 1412 to a smaller size, the structural strength of the housing 10 can be guaranteed.

[0041] Please see Figure 3 and Figure 5To achieve better protection, the connector 100 with the adjustment structure in this embodiment also includes an over-temperature protection structure 40. The over-temperature protection structure 40 and the over-current protection structure 20 are arranged side by side in the airflow channel. They are used to soften when the ambient temperature is higher than the preset temperature to block the airflow channel 11. Thus, when the temperature of the operating environment of the gas valve is higher than the preset withstand temperature of the over-temperature protection structure 40, the over-temperature protection structure 40 can soften and block the airflow channel 11 to ensure the safety of the gas valve.

[0042] The airflow channel 11 also includes a third section 114 and a fourth section 115 with different inner diameters. The fourth section 115 is connected to the first section 111. The over-temperature protection structure 40 includes a plastic part 41 and a second elastic part 42. The plastic part 41 is used to soften when the ambient temperature is too high so that it extends into the third section 114. The second elastic part 42 is located in the fourth section 115 and is used to apply a pushing force to the plastic part 41 so as to push the plastic part 41 into the third section 114, thereby blocking the airflow channel 11 by the softened plastic part 41.

[0043] Since the ends of the over-temperature protection structure 40 and the over-current protection structure 20 that abut against each other are both elastic structures, in order to achieve the expansion and contraction effect of the elastic structure and to facilitate the installation of the over-temperature protection structure 40 and the over-current protection structure 20 in the housing 10, the connector 100 with the adjustment structure of the over-temperature and over-current protection structure 20 also includes a retaining piece 60. The inner diameter of the fourth segment 115 is smaller than the inner diameter of the first segment 111, that is, there is a transition surface between the fourth segment 115 and the first segment 111. The retaining piece 60 is installed on the transition surface, and the two sides are respectively used for the first elastic member 22 and the second elastic member 42 to abut against each other, so that the ends of the first elastic member 22 and the second elastic member 42 abut against a hard object, thereby applying elastic force to the plastic part 41 or the mounting part respectively.

[0044] Further, please refer to Figure 5 In order for gas to flow smoothly out of the outlet 13 under normal conditions, a flow groove 411 is provided on the outer wall of the plastic part 41. The flow groove 411 is used for gas to flow through, thereby increasing the gas outflow.

[0045] Specifically, in this embodiment, the plastic component 41 is made of polypropylene or polyethylene. When the ambient temperature reaches 80°C, the plastic component 41 gradually softens and fills the third section 114. If the ambient temperature continues to rise, the plastic component 41 will gradually become fluid and fill the third section 114, thereby achieving a sealing effect. In other embodiments, other polymeric plastic materials can also be used.

[0046] In this embodiment, the second elastic element 42 is a tower-shaped spring. The end with a smaller diameter abuts against the plastic part 41, and the end with a larger diameter abuts against the overcurrent protection structure 20. Thus, the tower-shaped spring is adapted to the configuration where the inner diameter gradually changes between the third segment 114 and the fourth segment 115.

[0047] Please see Figure 3 In one embodiment of this utility model, in order to adjust the blocking flow rate, the connector 100 with the adjustment structure further includes a second adjustment structure 50. The second adjustment structure 50 is adjustablely installed on the air inlet 12 and abuts against the blocking member 21. It is used to adjust the distance between the blocking member 21 and the opening of the first segment 111. When the blocking member 21 is driven to approach the opening of the first segment 111, a smaller flow rate is required to drive the blocking member 21 to move and block the opening of the first segment 111 compared to the initial state. When the blocking member 21 is driven away from the opening of the first segment 111, due to the increased distance from the first segment 111, a larger flow rate is required to drive the blocking member 21 to block the opening of the first segment 111. Thus, the blocking flow rate can be adjusted by setting the second adjustment structure 50.

[0048] Understandably, in order to avoid the buzzing sound when the airflow flows from the second adjustment structure 50 to the sealing member 21, and because the sealing member 21 in this embodiment is spherical, which is more difficult to achieve than opening an airflow overflow groove on the second adjustment structure 50, an airflow overflow groove is provided on the side of the second adjustment structure 50 facing the sealing member 21 in this embodiment. The airflow can flow laterally, avoiding excessive impact between the airflow and the sealing member 21 when it flows into the housing 10, which would cause the buzzing sound.

[0049] The second adjustment structure 50 can be threadedly connected to the housing 10 so that the second adjustment structure 50 can be turned to push the sealing member 21 to move.

[0050] Specifically, the second 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 13. The adjustment member 51 abuts against the overcurrent protection structure 20, specifically against the blocking member 21. Thus, by turning the adjustment member 51, the blocking member 21 is pushed to move, thereby adjusting the preset pressure. In other embodiments, only the pushing adjustment member 51 may be provided, and the adjustment member 51 may be threadedly connected to the housing 10 to drive the movement of the blocking member 21.

[0051] Furthermore, by setting the mounting sleeve 52, since the adjusting component 51 and the mounting sleeve 52 are threadedly connected, when the user's requirements for the preset flow rate are not high, there is no need to adjust the preset flow rate. The adjusting component 51 can be removed, and at this time the sealing component 21 and the mounting sleeve 52 support each other, which can also realize the installation of the overcurrent protection structure 20.

[0052] The connector 100 with the aforementioned adjustment structure, by providing a first adjustment structure 3 and an auxiliary flow channel 14 on the housing 10, can achieve flow on both sides of the sealing member 21 when the sealing member 21 blocks the airflow channel 11, so that the air pressure inside the housing 10 can be balanced after the stove end is in the closed state. Thus, under the drive of the first elastic member 22, the sealing member 21 can open the airflow channel 11, so that the connector 100 can return to the use state. It is an automatic recovery method, which does not require manual adjustment and is convenient for users.

[0053] In another embodiment of the present invention, a gas valve is also provided, including a valve body and the aforementioned connector 100 with an adjustment structure, wherein the connector 100 with the adjustment structure is disposed at the air inlet of the valve body for connection to a gas cylinder.

[0054] In another embodiment, the present invention also provides a gas appliance, including the gas valve described above.

[0055] 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 an adjustment structure, characterized in that, include: The housing (10) has an airflow channel (11) inside and an air inlet (12) and an air outlet (13) at both ends. The housing (10) has an auxiliary channel (14) on it, which is connected to the airflow channel (11). An overcurrent protection structure (20) is movably disposed within the airflow channel (11), including a blocking member (21) and a first elastic member (22). The blocking member (21) is used to move towards the air outlet (13) when the airflow rate at the air inlet (12) is greater than a preset flow rate, so as to block the airflow channel (11). The first elastic member (22) is used to apply an elastic force to the blocking member (21) so as to move the blocking member (21) towards the air inlet (12) to open the airflow channel (11). A first adjustment structure (30) is provided in the auxiliary flow channel (14) for adjusting the opening degree of the opening of the auxiliary flow channel (14) connecting to the airflow channel (11).

2. The connector (100) with an adjustment structure according to claim 1, characterized in that, The airflow 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). The first section (111) faces the air outlet (13), and the second section (112) faces the air inlet (12). The first elastic member (22) is disposed in the first section (111), and the sealing member (21) is disposed in the second section (112). The sealing member (21) is used to seal the opening of the first section (111) facing the second section (112).

3. The connector (100) with an adjustment structure according to claim 2, characterized in that, The sealing element (21) is a spherical sealing element.

4. The connector (100) with an adjustment structure according to claim 2 or 3, characterized in that, The connector (100) with the adjustment structure further includes a second adjustment structure (50), which is adjustablely installed on the air inlet (12) and abuts against the sealing member (21) to adjust the distance between the sealing member (21) and the opening of the first segment (111).

5. The connector (100) with an adjustment structure according to any one of claims 1-3, characterized in that, The auxiliary flow channel (14) includes an interconnected installation channel (141), an inflow channel (142), and an outflow channel (143). The first adjustment structure (30) is adjustablely installed in the installation channel (141). When the blocking member (21) is blocking the airflow channel (11), the inflow channel (142) and the outflow channel (143) are located on both sides of the blocking member (21), and the flow area of ​​the inflow channel (142) and / or the flow area of ​​the outflow channel (143) is smaller than the flow area of ​​the airflow channel (11).

6. The connector (100) with an adjustment structure according to claim 5, characterized in that, The extension direction of the inflow channel (142) and the extension direction of the airflow channel (11) have a first included angle α, and the extension direction of the outflow channel (143) and the extension direction of the airflow channel (11) both have an included angle θ, wherein 0°<α≤90° and 0°<θ≤90°.

7. The connector (100) with an adjustment structure according to claim 5, characterized in that, The installation channel (141) includes an outer section (1411) and an inner section (1412). The inner section (1412) connects the inflow channel (142) and the outflow channel (143). The cross-sectional area of ​​the outer section (1411) is larger than that of the inner section (1412).

8. The connector (100) with an adjustment structure according to any one of claims 1-3 or 6 or 7, characterized in that, The connector (100) with the adjustment structure also includes an over-temperature protection structure (40), which and the over-current protection structure (20) are arranged side by side in the airflow channel (11) to soften when the ambient temperature is higher than the preset temperature, so as to block the airflow channel (11).

9. A gas valve, characterized in that, Includes the connector (100) with an adjustment structure as described in any one of claims 1-8.

10. A gas appliance, characterized in that, Includes the gas valve as described in claim 9.

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