Nozzle assembly for gas stove

Abstract

The utility model discloses a nozzle assembly for a gas stove, which comprises a nozzle body and a gas delivery pipe, one end of the nozzle body is provided with a sealing ring matched with an outlet of the gas delivery pipe, the nozzle body is provided with a fixed baffle ring abutted against the bottom of the sealing ring, the periphery of the nozzle body is sleeved with a loose joint nut provided with a stepped hole, and the loose joint nut is connected with the gas delivery pipe. The fixed baffle ring abuts against a step of the stepped hole, external threads are arranged on the outer wall of the connecting end of the gas conveying pipe and the nozzle body, matched internal threads are arranged on the inner wall of the stepped hole of the loose joint nut, and the external threads and the internal threads are connected in a threaded fit mode. The nozzle assembly for the gas stove provided by the utility model is good in sealing performance when being connected with the gas conveying pipe, can better mix air and gas, and is beneficial to improving the combustion performance of the gas stove.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzles for gas stoves, in particular to a nozzle assembly for gas stoves. Background Art

[0002] Gas stoves refer to kitchen appliances that use liquefied petroleum gas, artificial coal gas, natural gas and other gas fuels for direct fire heating. Now gas stoves all have nozzles. One end of the nozzle is connected to the inlet end of the ejector pipe of the burner, and the other end is connected to the outlet end of the gas pipe. It is used to mix the gas and air and deliver them to the burner at a certain pressure. Different gases have different delivery pressures due to different combustion values. For example, the pressure of natural gas is 2800 Pa, and the pressure of pipeline gas is 2000 Pa. Therefore, the hole sizes of different gas nozzles are also different. For example, when a gas stove needs to switch the gas it uses, it is necessary to replace the nozzle. Currently, the nozzle and the outlet end of the gas pipe are usually connected by threads. An external thread is set at the connecting end of the nozzle and the outlet end of the gas pipe, and a matching internal thread is set on the inner wall of the gas pipe. However, when connected by threads, it is easy to leak due to poor sealing. It is also necessary to strengthen the sealing by wrapping raw tape or filling with sealant. Wrapping raw tape or filling with sealant can easily jam or stick the matching internal and external threads, which increases the difficulty of installation on the one hand, and makes it difficult to disassemble and replace the nozzle on the other hand. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a nozzle assembly for a gas stove, which has good sealing performance when connected with a gas pipe, is convenient to install and replace, and can solve the shortcomings of the prior art.

[0004] The technical solution of the utility model is: a nozzle body assembly for a gas stove, including a nozzle body and a gas pipe, one end of the nozzle body is provided with a sealing ring matched with the outlet of the gas pipe, the nozzle body is provided with a fixed retaining ring that contacts the bottom of the sealing ring, the outer periphery of the nozzle body is sleeved with a swivel nut provided with a stepped hole, the fixed retaining ring limits the swivel nut by blocking the step with the stepped hole, the outer wall of the connecting end of the gas pipe and the nozzle body is provided with an external thread, the inner wall of the stepped hole of the swivel nut is provided with a matching internal thread, and the two are threadedly connected. After the air inlet end of the nozzle body is matched with the outlet of the gas pipe, the connection between the nozzle body and the gas pipe is realized by the threaded match between the swivel nut and the gas pipe, and because the air inlet end of the nozzle body is provided with a sealing ring, the sealed connection between the two can be guaranteed.

[0005] Furthermore, the sealing ring is a conical sealing ring, and the outlet of the gas transmission pipe is a conical opening matched with the sealing ring, which is convenient for the matching connection between the two, and convenient for the conical sealing ring to deform inwards due to extrusion, so as to achieve a better sealing effect.

[0006] The invention further comprises a damper, wherein the damper comprises a blade and a spring, wherein the blade is arranged at the other end of the nozzle body, and the spring is sleeved on the outer periphery of the nozzle body, and the two ends of the spring respectively contact the blade and the union nut. The union nut is respectively provided with a spring and a fixed retaining ring on both sides to contact and limit, and can prevent the union nut from moving or falling when the nozzle assembly has not been installed.

[0007] Furthermore, a boss is provided in the middle of the nozzle body, and a plurality of air inlet holes are evenly arranged on the boss, which are connected to the gas channel in the nozzle body. The provision of the air inlet holes can facilitate the mixing of gas and air when the nozzle body is used as a main nozzle, which is conducive to gas combustion and improves the combustion performance of the gas stove.

[0008] Furthermore, a boss is provided in the middle of the nozzle body, and a plurality of air inlet holes communicating with the gas channel in the nozzle body are evenly provided on the boss. The spring is sleeved on the periphery of the boss, and the two ends of the spring respectively contact the damper and the union nut. The provision of the air inlet holes can facilitate the mixing of gas and air when the nozzle body is used as the main nozzle body, which is helpful for gas combustion and improves the combustion performance of the gas stove. The two sides of the union nut are respectively provided with springs and fixed retaining rings for contact and limit, which can prevent the union nut from moving or falling off.

[0009] Furthermore, a movable retaining ring is sleeved on the nozzle body, and the movable retaining ring and the fixed retaining ring are respectively located on both sides of the boss, and the fan blade, the spring, the movable retaining ring and the boss are connected in sequence. When the nozzle assembly is not yet installed, the movable nut is located between the movable retaining ring and the fixed retaining ring and will not fall off, and the spring will not affect the air inlet hole on the boss, so that better air intake can be achieved.

[0010] In summary, the utility model provides a nozzle assembly for a gas stove, which has good sealing performance when connected to the gas pipe, can better mix air and gas, and helps to improve the combustion performance of the gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the first embodiment;

[0012] Figure 2 for Figure 1 B-direction cross-sectional view;

[0013] Figure 3 It is a structural schematic diagram of embodiment 1;

[0014] Figure 4 It is a schematic diagram of Embodiment 2;

[0015] As shown in the figure: nozzle body 1; air pipe 2; sealing ring 3; air pipe outlet 4; fixed retaining ring 5; stepped hole 6; union nut 7; step 8; internal thread 9; external thread 10; spring 11; boss 12; air inlet 13; fan blade 15; movable retaining ring 16. DETAILED DESCRIPTION

[0016] Embodiment 1 of the present utility model: Figures 1 to 3 As shown, a nozzle assembly for a gas stove includes a nozzle body 1 and a gas pipe 2. A sealing ring 3 matching with the gas pipe outlet 4 is provided at the lower end of the nozzle body 1. A fixed retaining ring 5 abutting against the bottom of the sealing ring 3 is provided on the nozzle body 1. The fixed retaining ring 5 and the nozzle body 1 are integrally formed. A swivel nut 7 with a stepped hole 6 is sleeved on the outer periphery of the nozzle body 1. The fixed retaining ring 5 limits the swivel nut 7 by blocking the step 8 with the stepped hole 6. An external thread 10 is provided on the outer wall of the connecting end of the gas pipe 2 and the nozzle body 1. A matching internal thread 9 is provided on the inner wall of the stepped hole 6 of the swivel nut 7. The two are threadedly connected. After the air inlet end of the nozzle body 1 matches with the gas pipe outlet 4, the connection between the nozzle body 1 and the gas pipe 2 is realized by the threaded matching of the swivel nut 7 and the gas pipe 2. Since the air inlet end of the nozzle body 1 is provided with a sealing ring 3, the sealed connection between the two can be ensured.

[0017] The preferred sealing ring 3 of this embodiment is a conical sealing ring, and the gas pipe outlet 4 is a conical opening matched therewith. On the one hand, the two are easier to match, and on the other hand, the conical sealing ring 3 is squeezed and deformed inwardly, which can achieve a better sealing effect.

[0018] The present embodiment preferably includes a damper, which includes a blade 15 and a spring 11. The blade 15 is rotatably connected to the upper end of the nozzle body 1. The spring 11 is sleeved on the outer periphery of the nozzle body 1, and its two ends respectively contact the blade 15 and the union nut 7. The spring 11 and the step 8 of the fixed retaining ring 5 are respectively provided on both sides of the union nut 7 to contact and limit, which can prevent the union nut 7 from moving or falling when the nozzle assembly has not been installed.

[0019] The preferred nozzle body 1 of this embodiment is provided with a boss 12 in the middle, and a plurality of air inlet holes 13 are evenly formed on the boss 12, which are communicated with the gas passage in the nozzle body 1. When installed, the stepped hole 6 of the union nut 7 passes through the boss 12 from bottom to bottom and contacts the fixed retaining ring 5. The provision of the fixed air inlet holes 13 can facilitate the mixing of gas and air when the nozzle body 1 is used as a main nozzle, which is conducive to gas combustion and improves the combustion performance of the gas stove.

[0020] Embodiment 2: Figure 4As shown, a movable retaining ring 16 is sleeved on the nozzle body 1, and the movable retaining ring 16 and the fixed retaining ring 5 are respectively located on both sides of the boss 12, and the fan blade 15, the spring 11, the movable retaining ring 16 and the boss 12 are connected in sequence. Its structure is based on the first embodiment and adds a movable retaining ring 16. The spring 11 is limited between the boss 12 and the fan blade 15. When the union nut 7 is not connected to the air delivery pipe 2, it is limited between the movable retaining ring 16 and the fixed retaining ring 5. When the nozzle assembly is not installed, the union nut is limited between the movable retaining ring and the fixed retaining ring and will not fall off. At the same time, the spring will not affect the air inlet hole on the boss, which can better intake air.

Claims

1. A nozzle assembly for a gas stove, comprising a nozzle body and a gas delivery pipe, characterized in that: A sealing ring that matches the outlet of the air pipe is provided at one end of the nozzle body, a fixed retaining ring that contacts the bottom of the sealing ring is provided on the nozzle body, a slewing nut with a stepped hole is sleeved on the outer periphery of the nozzle body, and the fixed retaining ring limits the slewing nut by blocking the step of the stepped hole, an external thread is provided on the outer wall of the connecting end of the air pipe and the nozzle body, and a matching internal thread is provided on the inner wall of the stepped hole of the slewing nut, and the two are connected by threaded matching.

2. The nozzle assembly for a gas stove according to claim 1, characterized in that: The sealing ring is a conical sealing ring, and the outlet of the gas transmission pipe is a conical opening matched with the sealing ring.

3. The nozzle assembly for a gas stove according to claim 1 or 2, characterized in that: The air door comprises an air blade and a spring. The air blade is arranged at the other end of the nozzle body. The spring is sleeved on the outer periphery of the nozzle body. Two ends of the spring are respectively in contact with the air blade and the movable nut.

4. The nozzle assembly for a gas stove according to claim 1, characterized in that: A boss is provided in the middle of the nozzle body, and a plurality of air inlet holes communicating with the gas channel in the nozzle body are evenly arranged on the boss.

5. The nozzle assembly for a gas stove according to claim 3, characterized in that: A boss is provided in the middle of the nozzle body, and a plurality of air inlet holes communicating with the gas channel in the nozzle body are evenly opened on the boss. The spring is sleeved on the periphery of the boss, and two ends of the spring are respectively in contact with the damper and the movable nut.

6. The nozzle assembly for a gas stove according to claim 4 or 5, characterized in that: A movable baffle ring is sleeved on the nozzle body, and the movable baffle ring and the fixed baffle ring are respectively located on both sides of the boss, and the fan blade, the spring, the movable baffle ring and the boss are connected in sequence.

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