CN212319779U

CN212319779U - Ignition device and gas water heater

Info

Publication number: CN212319779U
Application number: CN202020872306.7U
Authority: CN
Inventors: 马继卿; 梁国荣; 陆祖安; 陈阳坚
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-08
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses an ignition and gas heater who has this ignition, ignition includes: insulating seat and be fixed in first ignition needle, second ignition needle and the response needle of insulating seat, the second ignition needle is located first ignition needle with between the response needle, first ignition needle has first ignition point end, the second ignition needle has second ignition point end, first ignition point end with second ignition point end is not at same horizontal plane. Have the utility model discloses a gas heater ignition job stabilization nature is high for ignition device.

Description

Ignition device and gas water heater

Technical Field

The utility model relates to a gas equipment technical field, in particular to ignition and applied this ignition's gas heater.

Background

For a water heater (wall-mounted boiler) adopting a full-premixing technology, the smoke emission is lower, so that the wall-mounted boiler is more environment-friendly and is more and more valued by consumers.

The ignition device is an important part of a fully premixed water heater (wall-mounted boiler), and has the functions of igniting a gas-air mixture by releasing current and working to detect flame in an induction manner; is an important core component for ensuring the normal work of the machine.

The ignition device of the prior fully premixed water heater has the phenomenon of ignition failure or sudden detonation, and the ignition structure design of the prior fully premixed water heater has the improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ignition device aims at promoting ignition device's ignition job stabilization nature.

In order to achieve the above object, the present invention provides an ignition device, including: insulating seat and be fixed in first ignition needle, second ignition needle and the response needle of insulating seat, the second ignition needle is located first ignition needle with between the response needle, first ignition needle has first ignition point end, the second ignition needle has second ignition point end, first ignition point end with second ignition point end is not at same horizontal plane.

Optionally, the thickness direction of the insulating base is defined as a first direction, and a direction away from the insulating base and perpendicular to the first direction is defined as a second direction;

wherein the first firing tip and the second firing tip are spaced apart in a first direction and are spaced apart in a second direction.

Optionally, the linear distance between the first firing tip and the second firing tip is 4 millimeters to 6 millimeters.

Optionally, the first ignition needle, the second ignition needle and the sensing needle are partially bent from the second direction to the first direction, wherein the bending amplitude of the sensing needle to the first direction is smaller than the bending amplitude of the first ignition needle and the second ignition needle to the first direction.

Optionally, the first ignition needle includes a first ignition section, a second ignition section and a third ignition section that are connected in sequence, the first ignition section is fixedly connected with the insulating base, the second ignition section extends in the second direction and bends towards the first direction, the third ignition section bends towards the second ignition needle direction, and the end of the third ignition section forms the first ignition tip.

Optionally, the length of the sensing needle extending in the second direction is greater than the length of the first ignition needle and the second ignition needle extending in the second direction, and the sensing needle is bent toward the first ignition needle.

Optionally, the induction needle includes consecutive first induction section, second induction section and third induction section, wherein first induction section with insulating seat fixed connection, second induction section with the third induction section is to being close to the direction bending of first ignition needle and being in first direction extends.

Optionally, an included angle between the first sensing segment and the second sensing segment is larger than an included angle between the second sensing segment and the third sensing segment.

Optionally, the material of the insulating seat is ceramic.

Optionally, the first and second firing pins have a diameter in the range of 2 mm to 4 mm.

The utility model discloses still provide gas heater, including the combustor and install in the ignition of combustor, ignition is like foretell ignition.

Optionally, the first firing tip and the second firing tip are each directly opposite a fire aperture on the burner.

Optionally, the distance between the first and second firing tips and the fire hole on the burner is 6 to 10 millimeters.

The utility model discloses technical scheme is through adopting the most advanced design of ignition on two ignition needles with ignition to be not at same horizontal plane, and two most advanced designs of ignition exist the distance on spatial structure promptly, will produce the ignition arc in the space between two most advanced designs of ignition, so when ignition in the gas heater use, the outside spun gas of combustor among the gas heater contacts the ignition arc more easily and is lighted, and the success rate and the stability of igniteing obtain promoting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an ignition device according to an embodiment of the present invention;

FIG. 2 is a side view of the ignition device of FIG. 1;

FIG. 3 is a top view of the ignition device of FIG. 1;

FIG. 4 is a rear view of the ignition device of FIG. 1;

fig. 5 is a schematic view of the assembly of the burner and the ignition device in the gas water heater of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Ignition device	150	Second ignition needle
110	Insulating seat	151	Second firing tip
				130	First ignition needle	170	Induction needle
131	First ignition segment	171	First induction section
				133	Second ignition section	173	Second induction section
135	Third ignition segment	175	Third induction section
				137	First ignition tip	200	Burner with a burner head
139	Electricity connecting section

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an ignition device 100.

Referring to fig. 1 to 4, in an embodiment of the present invention, the ignition device 100 includes: the insulating seat 110, and the first ignition needle 130, the second ignition needle 150 and the sensing needle 170 fixed to the insulating seat 110, the second ignition needle 150 is located between the first ignition needle 130 and the sensing needle 170, the first ignition needle 130 has a first ignition tip 137, the second ignition needle 150 has a second ignition tip 151, and the first ignition tip 137 and the second ignition tip 151 are not in the same horizontal plane.

The insulating holder 110 has a substantially flat block-shaped structure, and the first ignition pin 130, the second ignition pin 150, and the sensing pin 170 are arranged at intervals in the width direction of the insulating holder 110. The insulating base 110 is made of ceramic, so that the first ignition needle 130, the second ignition needle 150 and the sensing needle 170 have good insulating performance. The cross-sectional shapes of the first ignition pin 130, the second ignition pin 150, and the sensing pin 170 are substantially circular, but may be other shapes, such as oval, square, etc. The first firing tip 137 and the second firing tip 151 are point discharge points that cooperate to produce an arc or spark that causes the mixture of gas and air in the gas water heater to burn. Where first firing tip 137 and second firing tip 151 are not in the same horizontal plane, it is understood that when insulator housing 110 is oriented in the horizontal orientation shown in fig. 2 and 4, first firing tip 137 is in horizontal plane a and second firing tip 151 is in horizontal plane B, with horizontal planes a and B being offset in the first direction.

The utility model discloses technical scheme is through adopting the most advanced design of ignition on two ignition needles with in ignition 100 to be not at same horizontal plane, and two most advanced designs of ignition exist the distance on spatial structure promptly, will produce the ignition arc in the space between two most advanced designs of ignition, so when ignition 100 in the gas heater use, the outside spun gas of combustor 200 among the gas heater contacts the ignition arc more easily and is lighted, and the success rate and the stability of igniteing obtain promoting.

In this embodiment, the thickness direction of the insulating base 110 is defined as a first direction, and a second direction perpendicular to the first direction and away from the insulating base 110 is defined as a second direction; wherein the first firing tip 137 and the second firing tip 151 are spaced apart in a first direction and are spaced apart in a second direction. In the present application, the first and

second sparking tips

137 and 151 are spatially offset from each other in the first and second directions shown in fig. 2-4, such that the virtual connecting line between the first and

second sparking tips

137 and 151 is a spatial oblique line, which is advantageous in that the arc or spark between the first sparking tip 137 and the second sparking tip 151 has a larger contact area with the combustion object, and when the ignition device 100 is installed in a gas water heater, the gas emitted from the burner 200 of the gas water heater will have a chance to contact the arc or spark in a direction away from the burner 200, and thus the ignition success rate will be greatly increased. Of course, in other embodiments, first sparking tip 137 and second sparking tip 151 are not in a horizontal plane, and it is also possible to include arrangements in which first sparking tip 137 and second sparking tip 151 are offset only in the first direction as shown.

To further improve the stability of the firing operation of the firing mechanism 100, the linear distance between the first firing tip 137 and the second firing tip 151 is 4 mm to 6 mm. The linear distance between first sparking tip 137 and second sparking tip 151 of the present application can be 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, and can preferably be a 5 mm solution. When the linear distance between the first firing tip 137 and the second firing tip 151 is less than 4 mm, an arc between the first firing tip 137 and the second firing tip 151 is too short to facilitate success of the firing. When the linear distance between the first sparking tip 137 and the second sparking tip 151 is greater than 6 mm, the arc between the first sparking tip 137 and the second sparking tip 151 is too thin and has a small contact surface to be successful. By setting the straight distance between first sparking tip 137 and second sparking tip 151 to between 4 mm and 6 mm, the stability of the spark is high.

Referring to fig. 2, the first ignition needle 130, the second ignition needle 150 and the sensing needle 170 are partially bent from the second direction to the first direction, wherein the bending amplitude of the sensing needle 170 to the first direction is smaller than the bending amplitude of the first ignition needle 130 and the second ignition needle 150 to the first direction. That is, as shown in fig. 2, an included angle D between a portion of the sensing pin 170 bent toward the first direction and a horizontal plane where the second direction is located is smaller than an included angle C between a portion of the first ignition pin 130 bent toward the first direction and a horizontal plane where the second direction is located and the value range of C in the present application is: c is more than 0 and less than 70 ℃, and the value range of D is as follows: d is more than 0 and less than 50 degrees. This application is all partly by the second direction towards first direction buckling first ignition needle 130, second ignition needle 150 and response needle 170, can be so that ignition needle and response needle can ignite and detect gas and air mixture in space, so the success rate promotes.

Specifically, the first ignition needle 130 of the present application includes a first ignition section 131, a second ignition section 133, a third ignition section 135, and an electrical connection section 139 connected to the first ignition section 131 and passing through the insulating base 110, wherein the first ignition section 131 is fixedly connected to the insulating base 110 and extends out toward the second direction, the second ignition section 133 extends in the second direction and bends toward the first direction, the third ignition section 135 bends toward the second ignition needle 150 and the end of the third ignition section forms the first ignition tip 137. That is, the first firing pin 130 of the present invention is formed to be bent and extended in a space by a three-stage structure, so that a virtual connection straight line between the first firing tip 137 and the second firing tip 151 is a spatial oblique line, thereby improving stability of the firing operation.

Further, referring to fig. 3, the length of the sensing pin 170 extending in the second direction is greater than the length of the first ignition pin 130 and the second ignition pin 150 extending in the second direction, and the sensing pin 170 is bent toward the first ignition pin 130. This application is great with the distance that response needle 170 extends in the second direction for after ignition 100 installed gas heater's combustor 200, response needle 170 can span the fire hole on a plurality of igniters, so can realize that the inspection is more accurate, buckle response needle 170 towards first ignition needle 130 direction simultaneously, can make the installation space that whole ignition 100 occupy less.

The sensing pin 170 includes a first sensing segment 171, a second sensing segment 173 and a third sensing segment 175 which are connected in sequence, wherein the first sensing segment 171 is fixedly connected with the insulating base 110, and the second sensing segment 173 and the third sensing segment 175 are bent toward the first ignition pin 130 and extend in the first direction. The structure that response needle 170 buckles in proper order through the three-section for response needle 170 extends in space and buckles, then ignition 100 installs the combustor 200 back of gas heater, and response needle 170 can be in the direction of keeping away from combustor 200 (or first direction in the figure), can sense the flame layer of the multiposition in a space, makes response needle 170 can both easily sense the flame signal when being directed against heavy load (long flame), light load (short flame), and response flame performance promotes greatly.

Referring to fig. 3 again, in the sensing pin 170, an included angle E is formed between the first sensing segment 171 and the second sensing segment 173, and an included angle F is formed between the second sensing segment 173 and the third sensing segment 175, wherein the included angle E is greater than the included angle F. Specifically, the value range of the included angle E is 110 degrees to 170 degrees, and the value range of the included angle F is 90 degrees to 160 degrees. Through the above-mentioned included angle setting, the sensing pin 170 forms a structure gradually surrounding the first ignition pin 130 and the second ignition pin 150, and the sensing efficiency is improved while the volume of the whole ignition device is reduced.

The first ignition needle 130, the second ignition needle 150, and the sensing needle 170 described above in the present application are preferably circular in cross-sectional shape and have a diameter ranging from 2 mm to 4 mm, and may preferably be 3 mm. The material may be an iron chromium aluminium alloy. The ignition performance is good through the arrangement, and meanwhile, deformation does not occur even after long-time use. Furthermore, the first ignition needle 130, the second ignition needle 150 and the sensing needle 170 all extend out of the power connection section 139 on the other side of the insulating base 110, and a sealant is filled at a connection portion between the power connection section 139 and the insulating base 110 to prevent moisture from entering and causing a short circuit, so that the performance of the ignition device 100 can be further improved.

Referring to fig. 5, the present invention further provides a gas water heater, which includes a burner 200 and an ignition device 100 installed in the burner 200, and since the gas water heater of the present application adopts all the technical solutions of all the embodiments, all the beneficial effects brought by the technical solutions of the embodiments are at least achieved, and are not repeated herein.

The structure of the burner 200 is provided with a plurality of combustion fire rows which are arranged in sequence, the combustion fire rows form a combustion surface, and a plurality of fire holes are arranged on the combustion fire rows at intervals. Further, to further enhance the ignition performance, the first and second sparking

tips

137 and 151 of the present application are each directly opposite the fire holes in the burner 200. In this regard, with respect to the fire holes, it is understood that the projections of the first firing tip 137 and the second firing tip 151 onto the burner 200 fall at least partially within the confines of the fire holes.

Further, the distance between the first and

second firing tips

137 and 151 and the fire hole of the burner 200 is 6 to 10 mm. The distance between the first and second sparking

tips

137 and 151 and the fire hole on the burner 200 is understood here as the distance in the direction of the sparking tip perpendicular to the burner 200. The distance selected by the application can be: 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm. When the distance is less than 6 mm, the concentration of the combustible gas is too high, and when the distance is more than 10 mm, the concentration of the combustible gas is low, both cases are unfavorable for stable ignition, and by setting the distance to 6 mm to 10 mm, the operational stability of the ignition operation is the best.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An ignition device, comprising: insulating seat and be fixed in first ignition needle, second ignition needle and the response needle of insulating seat, the second ignition needle is located first ignition needle with between the response needle, first ignition needle has first ignition point end, the second ignition needle has second ignition point end, first ignition point end with second ignition point end is not at same horizontal plane.

2. The ignition device according to claim 1, wherein a thickness direction of said insulating base is defined as a first direction, and a direction away from said insulating base and perpendicular to the first direction is defined as a second direction;

3. The ignition device of claim 1, wherein the linear distance between said first sparking tip and said second sparking tip is from 4 mm to 6 mm.

4. The ignition device of claim 2, wherein the first ignition needle, the second ignition needle, and the sensing needle are each partially bent from a second direction toward a first direction, wherein the magnitude of the bending of the sensing needle toward the first direction is less than the magnitude of the bending of the first ignition needle and the second ignition needle toward the first direction.

5. The ignition device according to claim 4, wherein the first ignition needle includes a first ignition section, a second ignition section and a third ignition section which are connected in sequence, the first ignition section is fixedly connected to the insulating base, the second ignition section extends in the second direction and is bent toward the first direction, the third ignition section is bent toward the second ignition needle, and a distal end thereof forms the first ignition tip.

6. The ignition device of claim 4, wherein the sensing pin extends in the second direction a length greater than the lengths of the first and second firing pins, and wherein the sensing pin is bent toward the first firing pin.

7. The ignition device of claim 6, wherein the sensing pin comprises a first sensing segment, a second sensing segment and a third sensing segment connected in sequence, wherein the first sensing segment is fixedly connected with the insulating base, the second sensing segment extends in a second direction and bends towards a first direction, and the second sensing segment and the third sensing segment bend towards a direction close to the first ignition pin and extend in the first direction.

8. The ignition device of claim 7, wherein the angle between the first and second induction sections is greater than the angle between the second and third induction sections.

9. The ignition device of claim 1, wherein the material of said insulator base is ceramic.

10. A gas water heater comprising a burner and an ignition device mounted to the burner, the ignition device being as claimed in any one of claims 1 to 9.

11. The gas water heater of claim 10, wherein said first firing tip and said second firing tip are each directly opposite a fire hole in said burner.

12. The gas water heater of claim 10, wherein the distance between said first and second firing tips and the fire hole in said burner is 6 mm to 10 mm.