Adjustable primary air damper arrangement

Abstract

The utility model relates to kitchen appliance technical field, more particularly, relates to a kind of adjustable primary air damper device.Adjustable primary air damper device, including fan assembly, nozzle assembly and the adjusting plate being set between fan assembly and nozzle assembly;Fan assembly has blast port;Adjusting plate is configured as by adjusting the distance with blast port, to adjust the air quantity from blast port into injection pipe;Adjusting plate has adjusting channel, and the adjusting channel includes the horn mouth towards blast port;Adjusting plate is further provided with guide structure, to enable adjusting plate to always face fan assembly.Such can efficiently and quickly realize primary air regulation.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and more specifically, to an adjustable primary air damper device. Background Technology

[0002] A gas stove generates heat by burning natural gas, which can then be used for cooking. Its core structure is the burner, which includes a natural gas inlet, burner head, inner ring burner cap, and outer ring burner cap. Natural gas combustion requires a certain amount of oxygen. When a gas stove has both inner and outer ring burner caps, air must be injected into both the inner and outer ring burners separately to supplement the oxygen needed for combustion.

[0003] Currently, most gas stoves on the market use a rotary built-in air damper for primary air conditioning. The main drawback of this existing technology is: Poor structural stability: Traditional snap-on dampers are prone to loosening due to thermal deformation, affecting the stability of the air-fuel ratio; Limitations of adjustment methods: Rotary dampers (such as louver structures) cause large airflow disturbances and lack linear adjustment precision; Maintenance difficulties: The built-in damper requires disassembly for cleaning, and the threaded fixing structure has not been used in the field of stove dampers. Utility Model Content

[0004] The purpose of this invention includes, for example, providing an adjustable primary air damper device that can efficiently and quickly achieve primary air conditioning.

[0005] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides an adjustable primary air damper device, comprising: Fan assembly, nozzle assembly, and adjusting plate disposed between the fan assembly and the nozzle assembly; The fan assembly has an air inlet; The regulating plate is configured to adjust the amount of air entering the ejector tube from the blower by adjusting its distance from the blower. The regulating plate has an regulating channel, which includes a flared opening facing the blower. The adjusting plate is also provided with a guide structure so that the adjusting plate can always be directly facing the fan assembly.

[0006] In an optional embodiment, a locking mechanism and a guide plate are also included, the locking mechanism being connected to the adjusting plate and the guide plate respectively to limit the position of the adjusting plate.

[0007] In an optional embodiment, the guide plate has a groove; the locking mechanism includes a locking member and an adjusting handle; one end of the locking member is connected to the adjusting plate, and the other end of the locking member passes through the groove and is connected to the adjusting handle; The adjustment handle can be pressed against the bottom of the guide plate to lock the adjustment plate, or moved away from the bottom of the guide plate to unlock the adjustment plate.

[0008] In an optional embodiment, the adjusting plate has a mounting hole, and a limiting portion is provided around the periphery of the mounting hole; The top of the locking member has a mating part; the bottom of the locking member is sequentially provided with the mounting hole and the sliding groove and then connected to the adjusting handle; the mating part and the limiting part are mutually engaged.

[0009] In an optional embodiment, the limiting part is a groove, and the mating part is a polygonal head at the top of the locking member; when the locking member passes through the mounting hole, the side wall of the polygonal head abuts against the side wall of the groove to limit the circumferential rotation of the locking member.

[0010] In an optional embodiment, the guide structure includes a slider disposed on the adjustment plate, and the bottom of the slider is provided with a guide groove; the guide groove is fitted with the guide plate so that the slider can slide along the extension direction of the guide plate.

[0011] In an optional embodiment, the depth of the guide groove is greater than or equal to the thickness of the guide plate.

[0012] In an optional embodiment, the extension direction of the guide groove is the same as the axis direction of the air outlet.

[0013] In an optional embodiment, the guide plate is disposed on the nozzle assembly or the fan assembly.

[0014] In an optional embodiment, an opening scale is also included, which is disposed on the nozzle assembly.

[0015] The beneficial effects of this utility model embodiment include, for example: The adjustable primary air damper device in this solution includes a fan assembly, a nozzle assembly, and an adjusting plate. The adjusting plate is used to regulate the primary air intake volume. When the adjusting plate is close to the nozzle, the primary air supply is reduced; when the adjusting plate is away from the nozzle, the primary air supply is increased. The flared opening of the adjusting channel allows the primary air from the blower, in addition to being driven by the fan itself, to pass through the adjusting channel, thereby enhancing the primary air entrainment capability. This ensures both the primary air entrainment speed and the amount of blower air introduced during damper adjustment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the adjustable primary air damper device according to an embodiment of the present utility model; Figure 2 This is an assembly diagram of the adjustable primary air damper device according to an embodiment of the present utility model; Figure 3 This is a cross-sectional schematic diagram of the adjustable primary air damper device according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the adjusting plate of the adjustable primary air damper device according to an embodiment of the present invention.

[0018] Icons: 100-Fan assembly; 101-Blower outlet; 200-Nozzle assembly; 300-Adjusting plate; 310-Adjusting channel; 311-Suction contraction port; 312-Mixing pipe; 313-Diffuser pipe; 320-Mounting hole; 322-Limiting part; 400-Locking mechanism; 410-Locking element; 411-Matching part; 420-Adjusting handle; 500-Guide plate; 510-Slide groove; 600-Slider; 610-Guide groove; 700-Opening scale; 800-Ejector tube. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] Please refer to Figure 1 This embodiment provides an adjustable primary air damper device, including: Fan assembly 100, nozzle assembly 200 and adjusting plate 300 disposed between fan assembly 100 and nozzle assembly 200; The fan assembly 100 has an air outlet 101; The regulating plate 300 is configured to regulate the amount of air entering the ejector tube 800 from the blower 101 by adjusting its distance from the blower 101; The regulating plate 300 has an regulating channel 310, which includes a flared opening facing the blower 101; The regulating plate 300 is also provided with a guide structure so that the regulating plate 300 can always be directly facing the fan assembly 100.

[0026] The adjustable primary air damper device in this design uses an adjusting plate 300 to regulate the primary air intake volume. When the adjusting plate 300 is close to the nozzle, the primary air supply decreases; when the adjusting plate 300 is away from the nozzle, the primary air supply increases. The flared structure of the adjusting channel 310 enhances the ejection capacity of the primary air, in addition to the drive of the blower itself. This ensures both the ejection speed of the primary air and the amount of air introduced during damper adjustment.

[0027] Please continue reading. Figure 1 , Figure 2 , Figure 3 and Figure 4To learn more about the adjustable primary air damper device.

[0028] In an optional embodiment, the regulating channel 310 includes an intake contraction port 311, a mixing tube 312, and a diffuser tube 313 connected in sequence; from the inlet to the outlet of the regulating channel 310, the diameter of the intake contraction port 311 gradually decreases to that of the mixing tube 312, and the diameter of the diffuser tube 313 gradually increases from the mixing tube 312. The intake contraction port 311 is the aforementioned flared opening.

[0029] Furthermore, the intake contraction port 311, mixing pipe 312, and diffuser pipe 313 form a Venturi tube. This regulating channel 310, with its Venturi structure of intake contraction port 311, mixing pipe 312, and diffuser pipe 313, allows the primary air from the blower, in addition to being driven by the blower itself, to pass through a dedicated Venturi regulating channel 310, thus enhancing the primary air injection capability. When the regulating plate 300 is away from the blower outlet 101 and close to the nozzle end, the intake contraction port 311 can collect the primary air from the blower. This allows for a reduction in the natural primary air injection volume without increasing the blower speed while increasing the primary air volume. The use of the Venturi tube structure ensures both the injection speed of the primary air and the amount of air introduced during damper adjustment. The diffuser pipe 313 allows for better mixing of the primary air and the fuel gas.

[0030] It is not difficult to understand that in other embodiments of this utility model, the adjustment channel 310 may also be a structure with only a flared opening. This is just an example and is not limited to any specific embodiment.

[0031] In an optional embodiment, the area of ​​the regulating channel 310 is equal to or greater than the area of ​​the blower outlet 101. Thus, when the damper regulating plate 300 is close to the outlet of the blower connecting seat, the blower's airflow is in a maximum supply state (because the blower's airflow is in a jet-diffusion state); when the damper regulating plate 300 is away from the outlet of the blower connecting seat and close to the nozzle fixing seat, the blower's airflow is in a minimum supply state (because the blower's airflow is in a jet-diffusion state, a portion of the blower's airflow is blocked by the damper regulating plate 300 due to diffusion and cannot mix with the gas).

[0032] In an optional embodiment, the adjustable primary air damper device further includes a locking mechanism 400 and a guide plate 500, wherein the locking mechanism 400 is connected to the adjusting plate 300 and the guide plate 500 respectively to limit the position of the adjusting plate 300.

[0033] In an optional embodiment, the guide plate 500 has a groove 510; the locking mechanism 400 includes a locking member 410 and an adjusting handle 420; one end of the locking member 410 is connected to the adjusting plate 300, and the other end of the locking member 410 passes through the groove 510 and is connected to the adjusting handle 420; the adjusting handle 420 can be pressed against the bottom of the guide plate 500 to lock the adjusting plate 300, or moved away from the bottom of the guide plate 500 to unlock the adjusting plate 300.

[0034] In an optional embodiment, the adjusting plate 300 has a mounting hole 320, and a limiting part 322 is provided around the periphery of the mounting hole 320; the top of the locking member 410 has a mating part 411; the bottom of the locking member 410 passes through the mounting hole 320 and the sliding groove 510 in sequence and is connected to the adjusting handle 420; the mating part 411 and the limiting part 322 are mutually engaged. Optionally, the locking member 410 is an adjusting screw.

[0035] In an optional embodiment, the limiting part 322 is a groove, and the mating part 411 is the polygonal head at the top of the locking member 410. When the locking member 410 passes through the mounting hole 320, the side wall of the polygonal head abuts against the side wall of the groove to limit the circumferential rotation of the locking member 410. Thus, when the damper adjusting fastening screw passes through the through hole of the groove, the hexagonal head of the damper adjusting fastening screw is embedded in the groove, achieving the purpose of preventing horizontal rotation.

[0036] The damper adjustment and fastening screw passes through the nozzle fixing seat slide groove 510, and the damper adjustment handle is connected to the damper adjustment and fastening screw by threads. When the damper adjustment handle 420 is turned upward, the damper adjustment plate 300 is locked and fixed; when the damper adjustment handle 420 is turned downward, the damper adjustment plate 300 is loosened so that it can slide horizontally.

[0037] In an optional embodiment, the guide structure includes a slider 600, which is disposed on the adjusting plate 300, and a guide groove 610 is provided at the bottom of the slider 600; the guide groove 610 is engaged with the guide plate 500 so that the slider 600 can slide along the extension direction of the guide plate 500. In actual operation, the groove 510 is embedded in the guide plate 500 for horizontal swing limiting.

[0038] Furthermore, the depth of the guide groove 610 is greater than or equal to the thickness of the guide plate 500. This makes the fit between the guide plate 500 and the guide groove 610 more stable, ensuring that the adjusting plate 300 can slide smoothly relative to the blower 101, and also ensuring that the adjusting plate 300 is facing the fan assembly 100 to ensure the stability of the primary air ejection.

[0039] Optionally, the extension direction of the guide groove 610 is the same as the axis of the air outlet 101. This ensures that the regulating plate 300 remains aligned with the air outlet 101 during sliding, thereby ensuring that the regulating plate 300 has a stable entrainment capability for primary air.

[0040] In an alternative embodiment, the guide plate 500 is disposed on the nozzle assembly 200 or the fan assembly 100.

[0041] In an optional embodiment, an opening scale 700 is also included, which is disposed on the nozzle assembly 200. Furthermore, a damper adjustment plate 300 with an opening scale 700 is provided on the blower base, with the end closer to the gas nozzle reducing the primary air intake and the end farther from the gas nozzle increasing the primary air intake.

[0042] As can be seen from the figure, the damper regulating plate 300 has a through hole or semi-circular notch at its center, which is surrounded by the guide cylinder of the nozzle fixing seat, making the axis of the damper regulating plate 300 concentric with the axis of the nozzle. The long groove direction of the nozzle fixing seat slide groove 510 is consistent with the axis of the nozzle. When the damper regulating handle 420 is turned downwards in the loose state, the damper regulating fastening screw slides along the long direction of the slide groove 510, thereby adjusting the blower air volume and the natural ejector air volume.

[0043] In summary, this utility model provides an adjustable primary air damper device, which has at least the following advantages: The beneficial effects of this utility model embodiment include, for example: (1) External tool-free adjustment; (2) Opening degree self-locking to prevent offset; (3) Millimeter-level feed accuracy control.

[0044] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An adjustable primary air damper device, characterized in that, include: Fan assembly (100), nozzle assembly (200) and adjusting plate (300) disposed between fan assembly (100) and nozzle assembly (200); The fan assembly (100) has an air outlet (101); The regulating plate (300) is configured to regulate the amount of air entering the ejector tube from the blower (101) by adjusting the distance from the blower (101); The regulating plate (300) has an regulating channel (310) including a flared opening facing the blower (101); The regulating plate (300) is also provided with a guide structure so that the regulating plate (300) can always be directly facing the fan assembly (100).

2. The adjustable primary air damper device according to claim 1, characterized in that: It also includes a locking mechanism (400) and a guide plate (500), the locking mechanism (400) being connected to the adjusting plate (300) and the guide plate (500) respectively, to limit the position of the adjusting plate (300).

3. The adjustable primary air damper device according to claim 2, characterized in that: The guide plate (500) has a groove (510); the locking mechanism (400) includes a locking member (410) and an adjusting handle (420); one end of the locking member (410) is connected to the adjusting plate (300), and the other end of the locking member (410) passes through the groove (510) and is connected to the adjusting handle (420); The adjustment handle (420) can be pressed against the bottom of the guide plate (500) to lock the adjustment plate (300), or moved away from the bottom of the guide plate (500) to unlock the adjustment plate (300).

4. The adjustable primary air damper device according to claim 3, characterized in that: The adjusting plate (300) has a mounting hole (320), and a limiting part (322) is provided around the mounting hole (320). The top of the locking member (410) has a mating part (411); the bottom of the locking member (410) is sequentially connected to the adjusting handle (420) after passing through the mounting hole (320) and the sliding groove (510); the mating part (411) and the limiting part (322) are mutually engaged.

5. The adjustable primary air damper device according to claim 4, characterized in that: The limiting part (322) is a groove, and the mating part (411) is a polygonal head at the top of the locking member (410). When the locking member (410) passes through the mounting hole (320), the side wall of the polygonal head abuts against the side wall of the groove to limit the circumferential rotation of the locking member (410).

6. The adjustable primary air damper device according to any one of claims 2-5, characterized in that: The guide structure includes a slider (600), which is disposed on the adjustment plate (300), and a guide groove (610) is provided at the bottom of the slider (600); the guide groove (610) is engaged with the guide plate (500) so that the slider (600) can slide along the extension direction of the guide plate (500).

7. The adjustable primary air damper device according to claim 6, characterized in that: The depth of the guide groove (610) is greater than or equal to the thickness of the guide plate (500).

8. The adjustable primary air damper device according to claim 6, characterized in that: The extension direction of the guide groove (610) is the same as the axis direction of the air outlet (101).

9. The adjustable primary air damper device according to any one of claims 2-5, characterized in that: The guide plate (500) is disposed on the nozzle assembly (200) or the fan assembly (100).

10. The adjustable primary air damper device according to claim 1, characterized in that: It also includes an opening scale (700) which is disposed on the nozzle assembly (200).

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