Nozzle assembly and hob

Abstract

The utility model relates to a range technical field, more particularly, relate to a nozzle assembly and range. Nozzle assembly includes nozzle seat and adjusting spare, nozzle seat is equipped with main passage and pressure relief passage, main passage is used for conveying air to the stove head, pressure relief passage communicates with main passage, and is used for discharging air in main passage to the outside, adjusting spare and nozzle seat movably connect to adjust the opening of pressure relief passage. The nozzle assembly is applied to the range, its simple structure, convenient to use, can adjust the air volume of the first air blast when the gas pressure drops, thereby can maintain the stability of air-fuel ratio, prevent the flame phenomenon, improve the adaptability and safety of range.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and more specifically, to a nozzle assembly and a stove. Background Technology

[0002] Existing blower stoves operate well when the gas pressure is constant, but during peak gas consumption periods or the later stages of using bottled liquefied petroleum gas, the gas pressure will drop. At this time, if the blower volume remains unchanged, the air-fuel ratio will increase, causing the flame to detach from the burner orifice, resulting in flame detachment, flameout, and a surge in CO. Utility Model Content

[0003] The purpose of this utility model is to provide a nozzle assembly and a stove that are simple in structure and easy to use. When the gas pressure drops, the amount of primary air in the blower can be adjusted to maintain a stable air-fuel ratio, prevent flame lift-off, and improve the adaptability and safety of the stove.

[0004] The embodiments of this utility model can be implemented as follows: In a first aspect, the present invention provides a nozzle assembly, which includes a nozzle seat and an adjusting component; The nozzle seat is equipped with a main passage and a pressure relief passage. The main passage is used to supply air to the burner head; the pressure relief passage is connected to the main passage and is used to discharge the air in the main passage to the outside. The adjusting element is movably connected to the nozzle seat to adjust the opening of the pressure relief passage.

[0005] In an optional embodiment, the main passage includes a flow guide cavity and an air outlet formed in the nozzle seat, with the air outlet communicating with the flow guide cavity; the pressure relief passage includes a pressure relief port formed in the nozzle seat, with the pressure relief port communicating with the flow guide cavity.

[0006] In an optional embodiment, along the centerline of the flow guide cavity, the gas outlet is located at the end of the nozzle seat near the furnace head, and the pressure relief port is located on the outer periphery of the nozzle seat.

[0007] In an optional embodiment, multiple pressure relief ports are provided at intervals around the outer periphery of the nozzle seat along the centerline direction of the flow guide cavity; The adjusting element is movably connected to the nozzle seat along the centerline of the flow guide cavity to close or open the pressure relief port.

[0008] In an optional embodiment, the adjusting member includes a movable connecting part and a pressure relief part, the movable connecting part being connected to the pressure relief part; the movable connecting part being movably connected to the nozzle seat, and the pressure relief part having a closed or open pressure relief port.

[0009] In an optional embodiment, the pressure relief section includes an arc-shaped piece that conforms to the outer periphery of the nozzle seat, the arc-shaped piece having an arc that adapts to the outer peripheral surface of the nozzle seat.

[0010] In an optional embodiment, the nozzle seat includes a guide block and a limiting block, the guide block and the limiting block being spaced apart to form a moving space; The movable connection part is movably disposed in the movable space along the center line direction of the guide cavity.

[0011] In an optional embodiment, the guide block is provided with a guide groove along the centerline of the flow guide cavity; The movable connecting part has a recessed groove, and the bottom of the recessed groove has mounting holes for mounting connecting screws; The head of the connecting screw is housed in the recess, and its shank passes through the mounting hole and guide groove, and mates with the connecting nut.

[0012] In an optional embodiment, the nozzle assembly further includes a blower seat and a blower fan; The blower is connected to the blower seat, and the blower seat is connected to the nozzle seat.

[0013] Secondly, this utility model provides a stove, which includes a stove body, a burner head, and the aforementioned nozzle assembly; Both the burner head and the nozzle assembly are connected to the main body of the cooktop, and the nozzle assembly is used to supply air to the burner head.

[0014] The beneficial effects of the nozzle assembly and stove provided in this embodiment of the present invention include: The nozzle assembly includes a nozzle seat and an adjusting component. The nozzle seat is equipped with a main passage and a pressure relief passage. The main passage supplies air to the burner, and the pressure relief passage is connected to the main passage. The adjusting component is movably connected to the nozzle seat to connect or block the pressure relief passage from the outside environment. This nozzle assembly is used in cooktops. It has a simple structure and is easy to use. It can adjust the amount of primary air blown when the gas pressure drops, thereby maintaining a stable air-fuel ratio, preventing flame lift-off, and improving the adaptability and safety of the cooktop. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is an exploded view of the nozzle assembly provided in this embodiment; Figure 2 This embodiment provides a schematic diagram of the structure of the nozzle assembly including the blower seat and the blower. Figure 3 This is a schematic diagram of the stove provided in this embodiment; Figure 4 This is a schematic diagram of the nozzle holder from a first-view perspective provided in this embodiment; Figure 5 This is a schematic diagram of the nozzle holder from a second perspective provided in this embodiment; Figure 6 This is a cross-sectional view of the nozzle seat provided in this embodiment; Figure 7 This is a schematic diagram of the structure of the adjusting component provided in this embodiment; Figure 8 An exploded view of the nozzle assembly provided in this embodiment, including the blower seat and the blower fan; Figure 9 This is a schematic diagram of the nozzle assembly and furnace head provided in this embodiment; Figure 10 This is a schematic diagram of the main body of the stove provided in this embodiment.

[0017] Icons: 100-Nozzle assembly; 110-Nozzle seat; 120-Adjusting component; 111-Main passage; 112-Pressure relief passage; 113-Guide cavity; 114-Gas outlet; 115-Pressure relief port; 121-Modible connection; 122-Pressure relief part; 123-Arc-shaped piece; 116-Guide block; 117-Limit block; 118-Guide groove; 124-Settling groove; 125-Mounting hole; 126-Connecting screw; 127-Connecting nut; 130-Blower seat; 140-Blower fan; 200-Stove; 210-Stove body; 220-Burn head; 211-Adjusting port. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0023] 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.

[0024] Please refer to Figure 1 This embodiment provides a nozzle assembly 100, which includes a nozzle seat 110 and an adjusting member 120; The nozzle seat 110 is equipped with a main passage 111 and a pressure relief passage 112. The main passage 111 is used to supply air to the burner head 220. The pressure relief passage 112 is connected to the main passage 111 and is used to discharge the air in the main passage 111 to the outside. The adjusting member 120 is movably connected to the nozzle seat 110 to adjust the opening of the pressure relief passage 112.

[0025] It should be noted that the purpose of the movable connection between the adjusting member 120 and the nozzle seat 110 is to adjust the opening of the pressure relief passage 112, thereby adjusting the connection state between the pressure relief passage 112 and the outside world. This includes connecting the pressure relief passage 112 to the outside world or blocking the pressure relief passage 112 from the outside world. When the pressure relief passage 112 is connected to the outside world, the flow rate of air discharged to the outside world through the pressure relief passage 112 can also be adjusted by adjusting its opening size.

[0026] Please refer to Figures 1-3 The working principle of the nozzle assembly 100, as shown in the figure, is as follows: Firstly, existing blower stoves operate well under constant gas pressure. However, during peak gas consumption periods or later in the lifespan of bottled liquefied petroleum gas (LPG), the gas pressure drops. If the blower volume remains constant, the air-fuel ratio will increase, causing the flame to detach from the burner orifice, resulting in flame lift-off, flameout, and a surge in CO. For example, during peak gas consumption periods or later in the lifespan of bottled LPG, if the gas pressure drops below half pressure, the gas flow rate decreases by approximately 30%, while the blower volume remains essentially unchanged. This causes the air-fuel ratio to surge from the design value of 1:1 to over 2:1, leading to the flame detaching from the burner orifice, flame lift-off, flameout, and a surge in CO.

[0027] The nozzle assembly 100 is used in the cooktop 200; it includes a nozzle seat 110 and an adjusting member 120; wherein the nozzle seat 110 is provided with a main passage 111 and a pressure relief passage 112, the main passage 111 is used to supply air to the burner 220, and the pressure relief passage 112 is connected to the main passage 111; the adjusting member 120 is movably connected to the nozzle seat 110 to connect or block the pressure relief passage 112 from the outside. Therefore, during use, the nozzle assembly 100 can adjust the primary air volume of the blower after the gas pressure drops, thereby maintaining a stable air-fuel ratio. Specifically, the nozzle assembly 100 includes an adjusting member 120 movably connected to the nozzle. By adjusting the position of the adjusting member 120, the pressure relief passage 112 can be connected to or blocked from the outside. Since the pressure relief passage 112 is connected to the main passage 111, the gas pressure in the main passage 111 can be reduced when the pressure relief passage 112 is connected to the outside. A portion of the air flow in the main passage 111 flows to the outside through the pressure relief passage 112. This allows the reduced primary air volume of the blower to adapt to the reduced gas flow, thereby adjusting the primary air volume when the gas pressure drops, maintaining a stable air-fuel ratio, preventing flame lift-off, and improving the adaptability and safety of the stove 200. Moreover, its overall structure is simple and easy to use.

[0028] In addition, the nozzle assembly 100 has a simple structure and strong adaptability, and can be applied to the retrofit and upgrade of existing stoves 200, thereby reducing their retrofit costs. Moreover, compared with the use of variable frequency fans, electronically controlled butterfly valves, or built-in manual dampers to adjust the flow rate, the nozzle assembly 100 has a simple structure, low manufacturing and usage costs, fewer usage restrictions, and is simple and convenient to install and operate.

[0029] Further, please refer to Figures 1-6There are various ways to configure the main passage 111 and the pressure relief passage 112. In this embodiment, the main passage 111 includes a flow guide cavity 113 and an air outlet 114 opened in the nozzle seat 110, and the air outlet 114 is connected to the flow guide cavity 113; the pressure relief passage 112 includes a pressure relief port 115 opened in the nozzle seat 110, and the pressure relief port 115 is connected to the flow guide cavity 113.

[0030] Therefore, with this configuration, air can be supplied through the outlet 114, and the opening of the pressure relief port 115 reduces the air pressure in the main passage 111. Furthermore, a portion of the airflow in the guide chamber 113 flows to the outside through the pressure relief port 115. This reduces the primary air volume of the blower, adapting to the reduced gas flow. Consequently, when the gas pressure drops, the primary air volume can be adjusted to maintain a stable air-fuel ratio. It should be noted that the opening size of the outlet 114 and pressure relief port 115 can be set according to actual needs.

[0031] In other embodiments of this invention, when configuring the main passage 111 and the pressure relief passage 112, the main passage 111 and the pressure relief passage 112 can be two flow channels opened on the nozzle seat 110. By adjusting the connection between the pressure relief passage and the outside world, or by adjusting the connection between the controller and the main passage 111, the primary air volume of the blower can be adjusted, thereby maintaining a stable air-fuel ratio. For example, a main flow channel and a pressure relief passage can be opened on the nozzle seat 110, with one end of the pressure relief passage connected to the main flow channel and the other end used to connect to the outside world for pressure relief.

[0032] Please refer to Figures 1-6 In this embodiment, the air outlet 114 and pressure relief port 115 are arranged along the centerline of the guide cavity 113. The air outlet 114 is located at the end of the nozzle seat 110 near the burner head 220, and the pressure relief port 115 is located on the outer periphery of the nozzle seat 110. This arrangement allows the air outlet 114 to supply air to the burner head 220, while the pressure relief port 115 is located on the outer periphery of the nozzle seat 110 to prevent the airflow discharged through the pressure relief port 115 from being introduced into the burner head 220. This reduces the primary air volume of the blower to accommodate the reduced gas flow rate, thereby adjusting the primary air volume when the gas pressure drops, thus maintaining a stable air-fuel ratio.

[0033] Furthermore, in this embodiment, multiple pressure relief ports 115 are spaced around the center line of the guide cavity 113 on the outer periphery of the nozzle seat 110. The purpose of this arrangement is to ensure that the structural position of the pressure relief ports 115 on the outer periphery of the nozzle seat 110 can adapt to the overall structure of the burner or stove 200, so as to avoid the internal structure of the stove 200 affecting the exhaust of the pressure relief ports 115. That is, by spaced multiple pressure relief ports 115 on the outer periphery of the nozzle seat 110, they can make way for the internal structure of the stove 200, thereby ensuring its pressure relief function.

[0034] When the pressure relief port 115 is located on the outer periphery of the nozzle seat 110, the adjusting member 120 can be movably connected to the nozzle seat 110 in various ways. For example, it can be rotatably connected to the nozzle seat 110, detachably connected to the nozzle seat 110, or slidably connected to the nozzle seat 110. In this embodiment, in order to simplify the structure of the adjusting member 120 and reduce the space required during use, the adjusting member 120 is movably connected to the nozzle seat 110 along the center line of the flow guide cavity 113 to close or open the pressure relief port 115. Thus, during use, if it is necessary to adjust the pressure relief port 115 to the open or closed state, the adjusting member 120 can be slid along the center line of the flow guide cavity 113 to open or close the pressure relief port 115.

[0035] It should be noted that, as described above, in this embodiment, multiple pressure relief ports 115 are configured. Therefore, when adjusting the position of the adjusting member 120, the adjusting member 120 can slide relative to the nozzle seat 110, causing one or more pressure relief ports 115 to open. Thus, the air flow during the pressure relief process can be adjusted by adjusting the number of open pressure relief ports 115 and adjusting the opening size of each pressure relief port 115.

[0036] Based on the above structure, since the adjusting member 120 is slidably connected to the nozzle seat 110, please refer to the following when configuring the adjusting member 120: Figures 1-7 The adjusting member 120 includes a movable connecting part 121 and a pressure relief part 122, with the movable connecting part 121 connected to the pressure relief part 122; the movable connecting part 121 is movably connected to the nozzle seat 110, and the pressure relief part 122 has a closed or open pressure relief port 115. The purpose of this arrangement is to simplify its structure.

[0037] Furthermore, based on the above structure, in order to reduce the space required for the adjustment component 120 to move, please refer to... Figures 1-7The pressure relief part 122 includes an arc-shaped piece 123 that conforms to the outer periphery of the nozzle seat 110. The arc-shaped piece 123 has an arc that adapts to the outer peripheral surface of the nozzle seat 110. Therefore, by setting the pressure relief part 122 as an arc-shaped piece 123, it can conform to or partially conform to the outer periphery of the nozzle seat 110 in both the front and rear positions, thereby reducing the space required for its adjustment position, thereby reducing the limitations of its use and improving its adaptability.

[0038] To improve the stability of the movement of the adjusting member 120 relative to the nozzle seat 110 and prevent disengagement, the nozzle seat 110 includes a guide block 116 and a limiting block 117. The guide block 116 and the limiting block 117 are spaced apart and form a movable space. The movable connecting part 121 is movably disposed in the movable space along the centerline of the flow guide cavity 113. Therefore, by confining the movable connecting part 121 within the movable space, its movement stability can be improved, and disengagement can be prevented.

[0039] Furthermore, to guide its sliding and prevent it from rotating relative to the nozzle seat 110, the guide block 116 has a guide groove 118 along the center line of the guide cavity 113; the movable connecting part 121 has a recessed groove 124, and the bottom of the recessed groove 124 has a mounting hole 125 for mounting the connecting screw 126; the head of the connecting screw 126 is housed in the recessed groove 124, and its shank passes through the mounting hole 125 and the guide groove 118, and engages with the connecting nut 127. Thus, through this arrangement, the connection between the connecting screw 126 and the connecting nut 127 can fix its installation position, and in conjunction with the aforementioned limiting block 117 and guide block 116, its installation stability is improved; simultaneously, when its position needs to be adjusted, the connecting nut 127 can be turned, allowing it to slide under the guidance of the guide groove 118, thereby improving its movement stability.

[0040] It should be noted that when the movable connecting part 121 is installed into the movable space, since the head of the connecting screw 126 is housed in the recess 124, the two end faces of the movable connecting part 121 can be in contact with the guide block 116 and the limiting block 117 respectively, thereby improving its stability. Furthermore, since the pressure relief part 122 is an arc-shaped piece 123 that is in contact with the outer peripheral surface of the nozzle seat 110, it can maintain multiple positions in surface contact with the nozzle seat 110 during the adjustment process, thereby improving its movement stability.

[0041] Based on the structure of the nozzle assembly 100 described above, please refer to... Figures 1-8The nozzle assembly 100 provided in this embodiment also includes a blower seat 130 and a blower 140; the blower 140 is connected to the blower seat 130, and the blower seat 130 is connected to the nozzle seat 110.

[0042] Therefore, during use, the nozzle assembly 100 can adjust the primary air volume by adjusting the position of the adjusting member 120 after the gas pressure drops, while keeping the blower 140 unchanged, thereby maintaining a stable air-fuel ratio. Specifically, by adjusting the position of the adjusting member 120, the pressure relief passage 112 can be connected to or blocked from the outside. Since the pressure relief passage 112 is connected to the main passage 111, the gas pressure in the main passage 111 can be reduced when the pressure relief passage 112 is connected to the outside. A portion of the air flow in the main passage 111 flows to the outside through the pressure relief passage 112. This reduces the primary air volume to adapt to the reduced gas flow, thereby adjusting the primary air volume when the gas pressure drops, maintaining a stable air-fuel ratio, preventing flame lift-off, and improving the adaptability and safety of the stove 200.

[0043] Based on the nozzle assembly 100 described above, please refer to... Figures 1-10 The present invention provides a stove 200, which includes a stove body 210, a burner head 220 and the aforementioned nozzle assembly 100; both the burner head 220 and the nozzle assembly 100 are connected to the stove body 210, and the nozzle assembly 100 is used to supply air to the burner head 220.

[0044] It should be noted that when the stove 200 is equipped with the above-mentioned nozzle assembly 100, in order to facilitate manual adjustment of the position of the adjustment member 120, an adjustment port 211 can be opened at the bottom of the stove body 210 for convenient adjustment operation.

[0045] By adopting the aforementioned nozzle assembly 100, the stove 200 possesses all the advantages of the aforementioned nozzle assembly 100. Specifically, during the use of the stove 200, if the gas pressure drops during peak gas consumption or the later stages of using bottled liquefied petroleum gas, and the blower 140 remains unchanged, the primary air volume can be adjusted by adjusting the position of the adjusting element 120 of the nozzle assembly 100, thereby maintaining a stable air-fuel ratio.

[0046] Furthermore, by adopting the aforementioned nozzle assembly 100, the stove 200 can reduce the actual primary air back pressure of the nozzle seat 110 through manual adjustment of the adjusting component 120, thereby returning the air-fuel ratio to the safe range of 1.1 to 1.3:1 and eliminating flame lift-off. The adjusting component 120 is installed on the nozzle seat 110 without increasing the thickness of the stove 200, and is equipped with a recessed groove 124 for the installation of the connecting screws 126 to avoid oil accumulation. It should be noted that when modifying an existing stove 200 using the aforementioned nozzle assembly 100, only the nozzle seat 110 needs to be replaced, resulting in low upgrade costs.

[0047] 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.

Claims

1. A nozzle assembly, characterized in that: The nozzle assembly includes a nozzle seat and an adjusting component; The nozzle seat is equipped with a main passage and a pressure relief passage; the main passage is used to supply air to the burner head; the pressure relief passage is connected to the main passage and is used to discharge the air in the main passage to the outside. The adjusting member is movably connected to the nozzle seat to adjust the opening of the pressure relief passage.

2. The nozzle assembly according to claim 1, characterized in that: The main passage includes a flow guide cavity and an air outlet in the nozzle seat, and the air outlet is connected to the flow guide cavity; the pressure relief passage includes a pressure relief port in the nozzle seat, and the pressure relief port is connected to the flow guide cavity.

3. The nozzle assembly according to claim 2, characterized in that: Along the centerline of the flow guide cavity, the gas outlet is located at one end of the nozzle seat near the furnace head, and the pressure relief port is located on the outer periphery of the nozzle seat.

4. The nozzle assembly according to claim 3, characterized in that: Around the centerline of the flow guide cavity, a plurality of pressure relief ports are provided at intervals on the outer periphery of the nozzle seat; The adjusting member is movably connected to the nozzle seat along the centerline of the flow guide cavity to close or open the pressure relief port.

5. The nozzle assembly according to claim 4, characterized in that: The adjusting component includes a movable connecting part and a pressure relief part, the movable connecting part being connected to the pressure relief part; the movable connecting part being movably connected to the nozzle seat, and the pressure relief part being used to close or open the pressure relief port.

6. The nozzle assembly according to claim 5, characterized in that: The pressure relief section includes an arc-shaped piece that fits against the outer periphery of the nozzle seat, the arc-shaped piece having an arc that adapts to the outer peripheral surface of the nozzle seat.

7. The nozzle assembly according to claim 5, characterized in that: The nozzle seat includes a guide block and a limiting block, the guide block and the limiting block are spaced apart and form an active space; The movable connecting part is movably disposed in the movable space along the centerline direction of the flow guide cavity.

8. The nozzle assembly according to claim 7, characterized in that: The guide block has a guide groove along the center line of the flow guide cavity; The movable connecting part is provided with a groove, and the bottom of the groove is provided with mounting holes for mounting connecting screws; The head of the connecting screw is housed in the recess, and its shank passes through the mounting hole and the guide groove, and engages with the connecting nut.

9. The nozzle assembly according to claim 7, characterized in that: The nozzle assembly also includes a blower seat and a blower; The blower is connected to the blower seat, and the blower seat is connected to the nozzle seat.

10. A stove, characterized in that: The stove includes a stove body, a burner head, and a nozzle assembly as described in claim 9; Both the burner head and the nozzle assembly are connected to the main body of the stove, and the nozzle assembly is used to supply air to the burner head.

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