IGNITION DEVICE OF GAS COOKTOP AND GAS COOKTOP

Abstract

An ignition device of a gas cooktop, and a gas cooktop. The ignition device of the gas cooktop includes a discharge end, a receiving end and an ignition control module. An ignition frequency generated by the ignition control module is within a range of [15 kHz, 22 kHz], a distance between the discharge end and the receiving end is within a range of [2 mm, 5 mm], and at ignition, a continuous arc is generated between the discharge end and the receiving end to ignite gas. When the ignition device of this scheme is ignited, an ignition sound is extremely low and there is no noise pollution.

Claims

1-12. (canceled)

13. An ignition device of a gas cooktop, comprising: a discharge end; a receiving end spaced from the discharge end at a distance within a range of [2 mm, 5 mm]; and an ignition control module configured to generate an ignition frequency within a range of [15 kHz, 22 kHz], wherein at ignition, a continuous arc is generated between the discharge end and the receiving end to ignite gas.

14. The ignition device of claim 13, wherein the distance between the discharge end and the receiving end is within a range of [2 mm, 3 mm].

15. The ignition device of claim 13, wherein the ignition frequency generated by the ignition control module is within a range of [15 kHz, 20 kHz].

16. The ignition device of claim 13, further comprising a spark electrode comprising two electrode terminals, wherein one of the electrode terminals is the discharge end, and the other one of the electrode terminals is the receiving end.

17. The ignition device of claim 13, further comprising a spark electrode comprising four electrode terminals which are configured to two discharge ends and two receiving ends, wherein at ignition, a continuous arc generated between one pair of the electrode terminals and a continuous arc generated between the other pair of the electrode terminals intersect each other.

18. The ignition device of claim 13, further comprising a spark electrode comprising an electrode terminal, wherein the electrode terminal forms the discharge end, with the receiving end being formed on a burner of the gas cooktop.

19. The ignition device of claim 13, further comprising a spark electrode comprising an electrode terminal, wherein the electrode terminal forms the discharge end, with the receiving end being formed by an end portion of a thermocouple of the gas cooktop.

20. The ignition device of claim 13, wherein at least one of the discharge end and the receiving end has a diameter which is less than or equal to 2 mm

21. The ignition device of claim 13, wherein the ignition frequency generated by the ignition control module is 18.2 KHZ, and the distance between the discharge end and the receiving end is 2 mm

22. The ignition device of claim 13, wherein the ignition frequency generated by the ignition control module is 20 KHZ, and the distance between the discharge end and the receiving end is 5 mm

23. The ignition device of claim 13, wherein the ignition frequency generated by the ignition control module is 15 KHZ, and the distance between the discharge end and the receiving end is 4 mm

24. A gas cooktop, comprising an ignition device, said ignition device comprising a discharge end, a receiving end spaced from the discharge end at a distance within a range of [2 mm , 5 mm], and an ignition control module configured to generate an ignition frequency within a range of [15 kHz, 22 kHz], wherein at ignition, a continuous arc is generated between the discharge end and the receiving end to ignite gas.

25. The gas cooktop of claim 24, wherein the distance between the discharge end and the receiving end is within a range of [2 mm, 3 mm].

26. The gas cooktop of claim 24, wherein the ignition frequency generated by the ignition control module is within a range of [15 kHz, 20 kHz].

27. The gas cooktop of claim 24, wherein the ignition device comprises a spark electrode comprising two electrode terminals, wherein one of the electrode terminals is the discharge end, and the other one of the electrode terminals is the receiving end.

28. The gas cooktop of claim 24, wherein the ignition device comprises a spark electrode comprising four electrode terminals which are configured to two discharge ends and two receiving ends, wherein at ignition, a continuous arc generated between one pair of the electrode terminals and a continuous arc generated between the other pair of the electrode terminals intersect each other.

29. The gas cooktop of claim 24, further comprising a burner, said ignition device comprising a spark electrode comprising an electrode terminal, wherein the electrode terminal forms the discharge end, with the receiving end being formed on the burner.

30. The gas cooktop of claim 24, further comprising a thermocouple, said ignition device comprising a spark electrode comprising an electrode terminal, wherein the electrode terminal forms the discharge end, with the receiving end being formed by an end portion of the thermocouple.

31. The gas cooktop of claim 24, wherein at least one of the discharge end and the receiving end of the ignition device has a diameter which is less than or equal to 2 mm

32. The gas cooktop of claim 24, wherein the ignition frequency generated by the ignition control module of the ignition device is 18.2 KHZ, and the distance between the discharge end and the receiving end of the ignition device is 2 mm

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a schematic diagram of a gas cooktop and its ignition device according to an embodiment of the present application;

[0024] FIG. 2 is a schematic diagram of a gas cooktop and its ignition device according to another embodiment of the present application; and

[0025] FIG. 3 is a schematic diagram of a gas cooktop and its ignition device according to still another embodiment of the present application.

REFERENCE NUMERALS:

[0026] 1-gas cooktop; 2-ignition device; 3-burner; 10-spark electrode; 11-electrode; 12-housing; 100-discharge end; 200-receiving end; 300-fire hole.

DESCRIPTION OF EMBODIMENTS

[0027] For a further understanding of the objectives, structures, features and functions of the present application, a detailed description is made below in cooperation with embodiments.

[0028] An ignition device 2 of a gas cooktop 1 includes a discharge end 100, a receiving end 200, and an ignition control module. An ignition frequency generated by the ignition control module is within a range of [15 kHz, 20 kHz]. A distance between the discharge end 100 and the receiving end 200 is within a range of [2 mm, 5 mm], and at ignition, a continuous arc is generated between the discharge end 100 and the receiving end 200 to ignite gas.

[0029] FIG. 1 is a schematic diagram of a gas cooktop and its ignition device according to an embodiment of the present application. As shown in FIG. 1, an ignition device of this embodiment includes a spark electrode 10, the spark electrode 10 includes an electrode 11 and a housing 12 wrapped outside the electrode 11, and the housing 12 is made of a ceramic material. An end of the electrode 11 is exposed out of the housing 12 (shown in FIG. 2).

[0030] The spark electrode 10 of this embodiment includes two electrode terminals. One of the electrode terminals is used as the discharge end 100 and the other as the receiving end 200. The discharge end 100 and the receiving end 200 are respectively connected to a positive electrode and a negative electrode of an ignition coil. Moreover, both the discharge end 100 and the receiving end 200 both have a diameter less than or equal to 2 mm, and are relatively sharp, which helps stabilize a discharge arc, so that the arc generated by the discharge end 100 is towards the receiving end 200 fixedly rather than other directions, such as towards a burner 3.

[0031] In this embodiment, the distance between the discharge end 100 and the receiving end 200 is 2 mm, and the ignition frequency generated by an ignition control module is 18.2 KHZ, to ignite gas flowing out from a fire hole 300 of the burner 3. In this scheme, when an ignition device 2 generates extremely low ignition sound at ignition, which is almost inaudible.

[0032] FIG. 2 is a schematic diagram of a gas cooktop and its ignition device according to another embodiment of the present application. A gas cooktop 1 includes a burner 3, and an ignition device 2 includes a spark electrode 10. In this embodiment, structures the same as those in the foregoing embodiment are represented by same reference numerals, and have same or similar functions or effects, which will not be repeated here. Different from the foregoing embodiment, the spark electrode 10 in this embodiment includes an electrode end, the electrode end is the discharge end 100, and the receiving end 200 is formed on the burner 3. As shown in FIG. 2, a sharp protrusion is formed on the burner 3. The protrusion is grounded and serves as the receiving end 200. In this embodiment, a distance between the discharge end 100 and the receiving end 200 is 5 mm, and an ignition frequency generated by an ignition control module is 20 KHZ, to ignite gas flowing out from a fire hole 300 of the burner 3. In this scheme, the ignition device 2 generates no noise at ignition, and a stable and continuous arc can be generated between the discharge end 100 and the receiving end 200.

[0033] In another embodiment, the ignition frequency generated by the ignition control module is 15 KHZ, and the distance between the discharge end 100 and the receiving end 200 is 4 mm. In this embodiment, noise-free ignition can also be realized.

[0034] In some embodiments, the ignition frequency generated by the ignition control module is set to 22 KHZ, a suitable value within a range of [2 mm, 5 mm] is selected as the distance between the discharge terminal 100 and the receiving end 200, where the value is determined through experiment, and a noise-free ignition can be realized. In other embodiments, the distance between the discharge end 100 and the receiving end 200 is set to 3 mm, and the ignition frequency of the ignition control module is adjusted within a range of [15 kHz, 22 kHz], which can also realize low ignition noise.

[0035] In addition, in another embodiment of the present application, an ignition device is as follows: A gas cooktop includes a thermocouple, an ignition device 2 includes a spark electrode 10, and the spark electrode 10 includes an electrode end. The electrode end is a discharge end, and a receiving end is an end of the thermocouple.

[0036] FIG. 3 is a schematic diagram of a gas cooktop and its ignition device according to still another embodiment of the present application. In this embodiment, structures the same as those in the foregoing embodiment are represented by same reference numerals, and have same or similar functions or effects, which will not be repeated here. Differences between this embodiment and the foregoing embodiments are that a spark electrode 10 includes four electrode terminals, namely A, B, C and D. The four electrode terminals A, B, C and D form two discharge ends and two receiving ends. At ignition, a continuous arc generated between the electrode terminals A and C (an arc is represented by dashed lines in FIG. 3) intersects a continuous arc generated between the electrode terminals B and D. In this way, ignition efficiency is improved and ignition is faster.

[0037] In the present application, an embodiment relates to a gas cooktop 1, and the gas cooktop 1 includes an ignition device 2 described in any one of the above embodiments.

[0038] Various embodiments of a single component illustrated with reference to FIGS. 1 to 3 may be combined with each other in any given manner to realize the advantage of the present application.

[0039] The present application has been described by the foregoing related embodiments, but the foregoing embodiments are only examples for implementing the present application. It is to be pointed out that the disclosed embodiments do not limit a scope of the present application. On the contrary, changes and modifications made without departing from the spirit and scope of the present application fall within the protection scope of the present application. application.