Ignition needle and gas stove

Abstract

The ignition needle and the gas stove provided by the embodiment of the utility model comprise an electrode and a ceramic body wrapping the outer side of the electrode, the ceramic body comprises a mounting hole, and the electrode is inserted into the mounting hole; the mounting hole is provided with at least one glue containing groove; the glue containing groove is configured to contain glue between the electrode and the mounting hole. Therefore, on one hand, overflowed glue generated when the ignition needle is installed can enter the glue containing groove, and pollution to an external electrode is avoided; and on the other hand, more colloids are distributed between the electrodes and the mounting holes, so that the fixing effect is enhanced.

Description

[Technical field]

[0001] The present application relates to a kitchen appliance, and more particularly to an ignition needle and a gas stove using the ignition needle. [Background technology]

[0002] Most existing gas stoves use a working mode in which the ignition electrode is powered on to ignite the gas. Among them, as one of the main actuators for ignition, most ignition electrodes use piezoelectric ceramic ignition needles. Such ignition needles are generally composed of an electrode and an insulating ceramic shell bonded to the outside of the electrode at high temperature. The electrode of the ignition needle is connected to the control unit of the gas stove through a wire. The disadvantages are that the existing ignition needle is prone to overflow glue and contaminate the electrode head when it is fixedly installed with the ceramic shell, reducing the ignition success rate; in addition, after the ignition device has been used for a period of time, the ignition needle and the ceramic shell are easily separated.

[0003] Unless there is sufficient evidence to support it, the prior art described herein does not mean that the prior art is known to ordinary technicians in the field involved in this application before the filing date of this application. [Summary of the invention]

[0004] One purpose of the embodiments of the present application is to provide an improved ignition needle and gas stove in response to at least one of the above technical problems and / or other possible technical problems not mentioned in the present application.

[0005] According to the first aspect of the present application, an embodiment of the present application provides an ignition needle, comprising an electrode and a ceramic body wrapped around the outside of the electrode, the ceramic body comprising a mounting hole, the electrode being inserted into the mounting hole; the mounting hole is provided with at least one glue containing groove; the glue containing groove is constructed to accommodate the glue between the electrode and the mounting hole.

[0006] On the one hand, the overflow glue generated when the ignition needle is installed can enter the glue tank, avoiding contamination of the external electrode; on the other hand, more colloid is distributed between the electrode and the mounting hole, enhancing the fixing effect.

[0007] According to an optional embodiment of the present application, the glue containing groove extends along the installation direction of the electrode.

[0008] According to an optional embodiment of the present application, the electrode includes an electrode body inserted into the mounting hole; the length of the glue containing groove is smaller than the length of the electrode body.

[0009] According to an optional embodiment of the present application, the depth and / or width of the glue holding groove decreases along the installation direction of the electrode.

[0010] According to an optional embodiment of the present application, the depth of the glue containing groove is 0.08-0.12 mm; the width of the glue containing groove is 0.8-1 mm.

[0011] According to an optional embodiment of the present application, the number of the glue containing grooves is 2, which are evenly distributed along the circumference of the mounting hole.

[0012] According to an optional embodiment of the present application, the electrode includes a discharge portion protruding from the top of the ceramic body; the discharge portion includes a discharge end and a shoulder close to the top of the ceramic body, and the shoulder is constructed to limit the discharge portion from entering the mounting hole.

[0013] According to an optional embodiment of the present application, the diameter of the discharge end is smaller than the diameter of the convex shoulder; and the convex shoulder transitions to the discharge end in a circular arc.

[0014] According to an optional embodiment of the present application, the side wall of the shoulder transitions to the top surface in a circular arc.

[0015] According to a second aspect of the present application, an embodiment of the present application provides a gas stove, comprising an ignition needle as described in any of the above embodiments.

[0016] It should be noted here that the directional expressions appearing in this application, unless otherwise specified, are based on the usual usage status of the gas stove.

[0017] It should be pointed out here that the “first” and “second” appearing in this specification are only used for descriptive purposes and are not used to indicate relative importance; moreover, they are not a definition of the quantity of the features they define; in addition, they are not a definition of the logical or sequential relationship of the features they define.

[0018] The above invention content of the present application is not intended to describe all possible implementations of the present application. Throughout the application, guidance is provided by listing examples in many places, and these examples can be used in various possible combinations.

Brief Description of the Drawings

[0019] The following drawings are only used to illustrate and explain the present application, and do not limit the scope of the present application, wherein:

[0020] Figure 1 is a partial cross-sectional view of an embodiment of a gas stove of the present application;

[0021] Figure 2 is a partial cross-sectional view of an ignition needle embodiment of the present application;

[0022] Figure 3 yes Figure 2 A partial enlarged view of part A;

[0023] Figure 4 is a top view of a ceramic body of an ignition needle embodiment of the present application;

[0024] Figure 5 is a cross-sectional view of an electrode of an ignition needle embodiment of the present application;

[0025] Figure 6 yes Figure 5 A partial enlarged view of part B.

[0026] Reference numerals:

[0027] 1-ignition needle, 2-electrode, 21-electrode body, 22-discharge part, 221-discharge end, 222-shoulder, 222a-side wall, 222b-top surface, 23-wire, 3-ceramic body, 31-mounting hole, 4-glue groove, 5-inner ring fire cover, 6-outer ring fire cover, 7-base. [Specific implementation method]

[0028] In order to make the purpose, scheme and beneficial effects of the present application more clear, the present application is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1 As shown, an embodiment of the present application discloses a gas stove, which includes an ignition needle 1, an inner ring fire cover 5, an outer ring fire cover 6 and a base 7. The inner ring fire cover 5 and the outer ring fire cover 6 are both arranged on the base 7. The ignition needle 1 is installed on the base 7 and discharges to the inner ring fire cover 5 to achieve ignition.

[0030] The ignition needle 1 includes an electrode 2 and a ceramic body 3 wrapped around the outside of the electrode 2, the ceramic body 3 includes a mounting hole 31, and the mounting hole 31 runs through the entire length direction of the ceramic body 3. During assembly, the electrode 2 with colloid coated on the outer surface enters from the top of the ceramic body 3 and is inserted into the mounting hole 31. In the prior art, on the one hand, during the assembly process, the colloid is squeezed between the electrode 2 and the mounting hole 31, and the overflowing colloid often adheres to the head of the electrode 2, affecting its normal discharge and ignition; on the other hand, the electrode 2 and the mounting hole 31 are often fixed only by a thin layer of colloid between the two, and the stability is relatively low.

[0031] In order to solve the above problems, Figure 2 As shown, in the embodiment of the present application, at least one glue holding groove 4 is provided on the mounting hole 31, and the glue holding groove 4 can accommodate the colloid between the electrode 2 and the mounting hole 31. Therefore, during the assembly process, the colloid that would have overflowed from the mounting hole 31 will enter the glue holding groove 4, avoiding contamination of the head of the electrode 2. At the same time, the provision of the glue holding groove 4 allows more colloid to be accommodated between the electrode 2 and the mounting hole 31, thereby enhancing the fixing effect.

[0032] According to an exemplary embodiment of the present application, Figure 2 and Figure 3 As shown, the glue tank 4 extends along the installation direction of the electrode 2. The installation direction of the electrode 2 is from the top to the root of the ceramic body 3, that is, the installation direction is from top to bottom when the ignition needle 1 is normally installed and used. The glue tank 4 extends along the installation direction of the electrode 2 to effectively receive the overflow glue at various positions during the installation process.

[0033] According to an exemplary embodiment of the present application, Figure 2 and Figure 3 As shown, the electrode 2 includes an electrode body 21 inserted into the mounting hole 31; the length of the glue tank 4 is less than the length of the electrode body 21. Specifically, the electrode body 21 refers to the part of the electrode 2 inserted into the mounting hole 31, and the bottom of the electrode body 21 is connected with a wire 23, thereby realizing electrical connection with the gas stove control unit, and the outside of the wire 23 is wrapped with an insulating skin 24. The length of the glue tank 4 is less than the length of the electrode body 21 in order to reduce the diameter difference between the part of the electrode body 21 close to the bottom and the mounting hole 31, reduce the possibility of the colloid overflowing downward and contacting the wire 23, and prevent the welding part of the electrode body 21 and the wire 23 from being damp and oxidized.

[0034] According to an exemplary embodiment of the present application, the depth and / or width of the glue holding groove 4 decreases along the installation direction of the electrode 2. It can be understood that during the installation process, the colloid applied to the surface of the electrode 2 will be squeezed and tend to move in the direction opposite to the installation direction of the electrode 2, that is, the colloid will overflow from the bottom to the top, so the upper position of the glue holding groove 4 is deeper and / or wider than the lower position, which is conducive to accommodating more overflowed glue.

[0035] Optionally, the depth of the glue tank 4 is 0.08-0.12 mm; the width of the glue tank 4 is 0.8-1 mm. Further, the depth of the top of the glue tank 4 is 0.08 mm, and the depth of the bottom is 0.12 mm; the width of the top of the glue tank 4 is 0.8 mm, and the width of the bottom is 1 mm. Figure 4 As shown, the uppermost end of the glue holding tank 4 is usually flush with the top of the ceramic body 3.

[0036] According to an exemplary embodiment of the present application, Figure 4 As shown, the number of the glue grooves 4 is 2, which are evenly distributed along the circumference of the mounting hole 31. Theoretically, the more the number of the glue grooves 4 is and the more evenly they are distributed, the easier it is for the overflow glue to be absorbed and the better the fixing effect. However, since the diameter of the mounting hole 31 is often less than 2 mm, opening too many grooves on it will often greatly increase the manufacturing difficulty and cost. The number of the glue grooves 4 is set to 2, which takes into account both the manufacturing cost and the fixing effect.

[0037] According to an exemplary embodiment of the present application, the electrode 2 includes a discharge portion 22 protruding from the top of the ceramic body 3. Specifically, as Figure 2 , Figure 3 and Figure 5 As shown, the electrode 2 includes an electrode body 21 and a discharge portion 22. The electrode body 21 is inserted into the ceramic body 3. A wire 23 is connected to the bottom of the electrode body 21 to achieve electrical connection with the gas stove control unit. The wire 23 is wrapped with an insulating skin. The discharge portion 22 protrudes from the top of the ceramic body 3 for discharge and ignition.

[0038] Furthermore, if Figure 6 As shown, the discharge portion 22 includes a discharge end 221 and a boss 222 near the top of the ceramic body 3, and the boss 222 is configured to limit the discharge portion 22 from entering the mounting hole 31. Specifically, the boss 222 is located at the lower part of the discharge portion 22, and its diameter is larger than the diameter of the mounting hole 31. During assembly, the electrode 2 coated with colloid on the outer surface enters from the top of the ceramic body 3 and is inserted into the mounting hole 31 until the boss 222 abuts against the top of the ceramic body 2, thereby completing the installation of the electrode 2 in the installation direction. In addition, the boss 222 can also prevent the colloid from overflowing from the mounting hole 31 to the discharge end 221, thereby avoiding ignition failure.

[0039] In an optional embodiment, the diameter of the discharge end 221 is smaller than the diameter of the convex shoulder 222. According to the tip discharge principle, the smaller the diameter of the discharge end 221, the better the discharge effect. Figure 6 As shown, due to the different diameters of the discharge end 221 and the boss 222, there must be a transition change in diameter between the two. If the transition between the two is constructed as an arc rather than a right-angle transition, less charge will be gathered in the transition area, which is conducive to more charge being concentrated on the top of the discharge end 221, thereby improving the ignition success rate.

[0040] In an optional embodiment, if Figure 6 As shown, the side wall 222a and the top surface 222b of the boss 222 are transitioned in an arc. Similarly, this structure replaces the transition area of ​​the two surfaces of the boss 222 with an arc, which reduces the charge accumulation here and improves the ignition success rate.

[0041] The present application also provides a gas stove embodiment, which includes the above-mentioned ignition needle.

[0042] The components of different embodiments may be combined with each other in any feasible manner to achieve the purpose of this application.

[0043] It should be noted that the present application should not be understood as being limited to the above-described implementation methods, but should be understood as covering all possible implementations determined by the claims of the present application in combination with the disclosure of the specification. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall fall within the protection scope of the technical solution of the present application.

Claims

1. An ignition needle, comprising an electrode and a ceramic body wrapped around the outside of the electrode, characterized in that: The ceramic body comprises a mounting hole, and the electrode is inserted into the mounting hole; The mounting hole is provided with at least one glue holding groove; The glue holding tank is configured to contain glue between the electrode and the mounting hole.

2. The ignition needle according to claim 1, characterized in that: The glue holding groove extends along the installation direction of the electrode.

3. The ignition needle according to claim 2, characterized in that: The electrode comprises an electrode body inserted into the mounting hole; The length of the glue holding tank is smaller than the length of the electrode body.

4. The ignition needle according to claim 3, characterized in that: The depth and / or width of the glue holding groove decreases along the installation direction of the electrode.

5. The ignition needle according to claim 4, characterized in that: The depth of the glue tank is 0.08-0.12mm; The width of the glue holding groove is 0.8-1 mm.

6. The ignition needle according to claim 1, characterized in that: The number of the glue containing grooves is 2 and they are evenly distributed along the circumference of the mounting hole.

7. The ignition needle according to claim 1, characterized in that: The electrode includes a discharge portion protruding from the top of the ceramic body; The discharge portion includes a discharge end and a shoulder near the top of the ceramic body, and the shoulder is configured to limit the discharge portion from entering the mounting hole.

8. The ignition needle according to claim 7, characterized in that: The diameter of the discharge end is smaller than the diameter of the shoulder; The convex shoulder transitions to the discharge end arc.

9. The ignition needle according to claim 8, characterized in that: The side wall and the top surface of the shoulder are in arc transition.

10. A gas stove, characterized in that: The invention comprises an ignition needle as claimed in any one of claims 1 to 9.

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