CN211260942U

CN211260942U - Metal honeycomb heating body for gas cooker

Info

Publication number: CN211260942U
Application number: CN201921280723.6U
Authority: CN
Inventors: 刘凯; 陈琦; 卢华枝; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-08-14
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a metal honeycomb heat-generating body for gas cooking utensils, including the metal band material, the metal band material is provided with a plurality of protruding structures, the metal band material is coiled and is formed the honeycomb heat-generating body that has a plurality of coils to be formed with the hole that supplies the gas to pass through between the adjacent coil, wherein the lower extreme of protruding structure seals, the upper end has the formation the opening in hole. The metal honeycomb heating element of the utility model has low porosity at the lower end of the honeycomb heating element, and has small effective cross-sectional area for gas to pass through, so that the lower end of the honeycomb heating element can be better cooled when the gas passes through quickly, thereby preventing flame from spreading to the lower end of the honeycomb heating element, having high flame stability and being not easy to cause backfire; meanwhile, the porosity of the upper end of the honeycomb heating body is high, efficient combustion of fuel gas and smooth emission of combustion tail gas are facilitated, the heating speed is high, and cooking experience is good.

Description

Metal honeycomb heating body for gas cooker

Technical Field

The utility model relates to a cooking utensils technical field especially relates to a metal honeycomb heat-generating body for gas cooking utensils.

Background

At present, heating elements of infrared gas cookers in the market mainly comprise two types, namely a ceramic honeycomb body and a metal honeycomb heating element, wherein the metal honeycomb heating element is more and more popular with consumers due to better cold and heat shock resistance and better texture. The metal honeycomb heating body is mostly formed by coiling one or more metal thin strips, but compared with loose ceramics, the compact metal strip has higher heat conductivity, and heat is easier to conduct from the upper side to the lower side of the honeycomb plate, so that the lower side of the honeycomb plate has high temperature. For the honeycomb body which is formed by coiling the metal strip and has a structure with uniform pores up and down, in order to prevent the flame from spreading to the lower side of the honeycomb body to cause tempering, the pores of the honeycomb body need to be designed to be very small, and the small pores can cause the following problems: 1. the porosity of the honeycomb body can be reduced, so that ejection is not facilitated, and further improvement of combustion efficiency is limited; 2. the consumptive material increases, and it is slower to generate heat, and the culinary art is experienced worse.

In addition, the honeycomb body temperature rises sharply after combustion of the fuel gas in the micropores, the volume increases, and the exhaust gas requires a larger volume for emission, which requires a higher porosity on the upper side of the honeycomb body.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior correlation technique at least to a certain extent, for this reason, the utility model provides a metal honeycomb heat-generating body for gas cooking utensils, its flame burning is more stable, is difficult for taking place the tempering.

According to the metal honeycomb heating body for the gas cooker, the metal honeycomb heating body is realized by the following technical scheme:

a metal honeycomb heating body for a gas cooker at least comprises a metal strip, wherein a plurality of convex structures which are arranged in a row are arranged in the length direction of the metal strip, the metal strip is coiled to form a honeycomb heating body with a plurality of coil coils, a pore for gas to pass through is formed between every two adjacent coil coils, one end of each convex structure, which is close to the lower half section in the width direction of the metal strip, is closed, the other end of each convex structure is provided with an opening for forming the pore, and the opening is an air outlet.

In a first embodiment, the protrusion structure is a first protrusion, the lower end of the first protrusion is closed, the upper end of the first protrusion has an opening forming the aperture, and the opening is provided with the air outlet.

Further, the first bulges are uniformly arranged at the middle section of the metal strip in the width direction.

Further, the first bulge is formed by integrally stamping and stretching the metal strip, and the upper end of the first bulge is cut and separated from the metal strip to form the air outlet.

In a second embodiment, the protrusion structures are second protrusions, and each of the second protrusions includes hollow protrusions and sub-protrusions arranged up and down.

Further, the hollowed-out bulges and the sub-bulges are respectively positioned on the upper half section and the lower half section in the width direction of the metal strip, and the hollowed-out bulges and the sub-bulges are the same in height.

Further, openings are formed in the upper end and the lower end of the hollow-out protrusion, the opening in the upper end is used for forming the pore air outlet, and the opening in the lower end is used for allowing fuel gas to pass through.

Furthermore, the upper end and the lower end of the sub-bulge are both closed; or the upper end of the sub-bulge forms an opening, the lower end of the sub-bulge is closed, and the opening at the upper end is an air outlet.

Further, the hollowed-out protrusions are formed by integrally punching and stretching the metal strip, the upper ends and the lower ends of the hollowed-out protrusions are cut and separated from the metal strip, and the air outlets and the air inlets are formed respectively.

Furthermore, the sub-protrusions are formed by integrally punching and stretching the metal strip, the upper ends of the sub-protrusions and the metal strip are cut and separated to form openings of the air outlets, and the lower ends of the sub-protrusions are closed.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the metal honeycomb heating element of the utility model has low porosity at the lower end of the honeycomb heating element, and has small effective cross-sectional area for gas to pass through, so that the lower end of the honeycomb heating element can be better cooled when the gas passes through quickly, thereby preventing flame from spreading to the lower end of the honeycomb heating element, having high combustion stability and being not easy to cause backfire;

2. the utility model discloses a metal honeycomb heat-generating body, the porosity factor of its honeycomb heat-generating body upper end is high, is favorable to the high-efficient burning of gas and burning exhaust emissions, and it is fast to generate heat, cooks and experiences well.

Drawings

FIG. 1 is a schematic structural view of a honeycomb heating element formed by winding a metal strip tray in embodiment 1 of the present invention;

FIG. 2 is a front view of a partial metal strip in embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken in the direction B-B of FIG. 2;

fig. 5 is an axial side view of a partial metal strip in example 1 of the present invention;

fig. 6 is an axial side view of a partial metal strip in embodiment 2 of the present invention;

fig. 7 is an axial side view of a partial metal strip in example 3 of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

Example 1

As shown in fig. 1 to 4, a metal honeycomb heating element for a gas range includes a metal strip 1, a plurality of raised structures 2 arranged in a row are provided in a length direction of the metal strip 1, the metal strip 1 is coiled to form a honeycomb heating element having a plurality of coils, and a hole 3 for passing gas is formed between adjacent coils, and the gas is transferred from the hole 3 to an upper surface of the honeycomb heating element for combustion. Wherein one end of the convex structure 2 close to the lower half section of the metal strip material 1 in the width direction is closed, the other end is provided with an opening forming part of the pore 3, and the opening is an air outlet 201 for gas and/or smoke to pass through. The lower half of the present embodiment specifically refers to a section below the center line in the width direction of the metal strip 1.

The metal honeycomb heat-generating body of this embodiment sets up the lower extreme through 2 protruding structures into the blind end, makes the porosity of honeycomb heat-generating body lower extreme low to reduced the effective cross-sectional area that honeycomb heat-generating body lower extreme supplied the gas to pass through, be favorable to accelerating the gas velocity of flow of honeycomb heat-generating body lower extreme, so that the gas can cool off the honeycomb heat-generating body lower extreme better when passing through fast, thereby reach and prevent flame to propagate to honeycomb heat-generating body lower extreme, combustion stability is higher, difficult emergence tempering. In addition, set up the gas outlet 201 that forms partial hole 3 through the upper end at protruding structure 2, make the porosity of honeycomb heat-generating body upper end higher, be favorable to the high-efficient burning of gas and the smooth and easy emission of burning tail gas, it is fast to generate heat, and culinary art is experienced.

As shown in fig. 2-5, the protrusion structure 2 is a first protrusion 21, and the lower end of the first protrusion 21 is closed, and the upper end of the first protrusion has an opening forming the aperture 3, and the opening is an air outlet 201. From this, the gas can only be followed the clearance between two arbitrary adjacent first protruding 21 lower extremes and passed through, is favorable to accelerating the gas velocity of flow of honeycomb heat-generating body lower extreme, improves the cooling effect, and then avoids flame to spread to honeycomb heat-generating body lower extreme and take place the tempering. In addition, the first bulge 21 plays a supporting role, the air outlet 201 at the upper end of the first bulge is used as a part of the pore 3, so that the porosity of the upper end of the honeycomb heating body is improved, and the first bulge is better matched with the rule of large pores required by a combustion area.

Specifically, the first projections 21 are uniformly provided in the middle section in the width direction of the metal strip 1. Preferably, first arch 21 is by the integrative punching press stretch forming of metal strip material 1, and the upper end of first arch 21 and the cutting separation of metal strip material 1 form gas outlet 201, so need not to increase the consumptive material, and the quick machine-shaping of first arch 21 of being convenient for is favorable to improving production efficiency, reduces manufacturing cost.

Example 2

As shown in fig. 6, the present embodiment is different from embodiment 1 in that: the bump structure 2 is a second bump 22, and each second bump 22 includes a hollow bump 221 and a sub-bump 222 arranged up and down. Specifically, the hollow-out protrusions 221 and the sub-protrusions 222 are respectively located at the upper half section and the lower half section in the width direction of the metal strip 1, and the hollow-out protrusions 221 are coaxially arranged above the sub-protrusions 222. The heights of the hollowed-out protrusions 221 and the sub-protrusions 222 are the same, which is beneficial to ensure that the pores 3 formed between the coils are more uniform.

Preferably, the upper end and the lower end of the hollow-out protrusion 221 are provided with openings, wherein the opening at the upper end is an air outlet 201 for forming the pore 3, and the opening at the lower end is an air inlet 202 for supplying fuel gas, so that the hollow-out protrusion 221 can play a supporting role and can be used as a part of the pore 3, thereby being beneficial to improving the overall porosity of the honeycomb heating body, better meeting the large porosity required by a combustion area, having high combustion efficiency, fast heating and smoother smoke emission. In addition, the upper end and the lower end of the sub-protrusion 222 are both closed, so that the porosity of the lower end of the honeycomb heating body is reduced, the small porosity required by combustion stability is better met, and tempering is not easy to occur.

Preferably, the hollow-out protrusions 221 are integrally formed by stamping and stretching the metal strip 1, and the upper ends and the lower ends of the hollow-out protrusions 221 are cut and separated from the metal strip 1 to form the air outlets 201 and the air inlets 202, respectively. The sub-protrusions 222 are integrally formed by punching and drawing the metal strip 1, and have closed upper and lower ends. Therefore, under the condition of not increasing consumable materials, the manufacturing process is simplified, the hollow-out protrusions 221 and the sub-protrusions 222 are convenient to machine and form quickly, and the purpose of reducing the manufacturing cost is achieved.

Example 3

As shown in fig. 7, the present embodiment is different from embodiment 2 in that: the upper end of the sub-projection 222 is cut and separated from the metal strip 1 to form an opening of the air outlet 201, and the other parts are the same as those of embodiment 2. It can be seen that the gas outlet 201 is formed in the upper end of the sub-protrusion 222, so that the overall porosity of the metal honeycomb heating body is higher, the combustion efficiency and the heating effect are improved, and the combustion tail gas is discharged more smoothly.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A metal honeycomb heating body for a gas cooker at least comprises a metal strip (1), wherein a plurality of raised structures (2) which are arranged in a row are arranged in the length direction of the metal strip (1), the metal strip (1) is coiled to form the honeycomb heating body with a plurality of coiled coils, and pores (3) for gas to pass through are formed between the adjacent coiled coils, the metal honeycomb heating body is characterized in that one end of each raised structure (2) close to the lower half section of the metal strip (1) in the width direction is closed, the other end of each raised structure is provided with an opening for forming the pores (3), and the opening is an air outlet (201).

2. A metal honeycomb heating body for a gas range as described in claim 1, wherein said convex structure (2) is a first protrusion (21), the lower end of said first protrusion (21) is closed, the upper end has an opening forming said void (3), said opening is said gas outlet (201).

3. A metal honeycomb heating body for a gas range as set forth in claim 2, characterized in that said first projections (21) are provided uniformly in the middle section in the width direction of said metal strip (1).

4. A metal honeycomb heating body for a gas range according to claim 2, characterized in that said first projection (21) is integrally press-stretch formed from said metal strip (1), and the upper end of said first projection (21) is cut and separated from said metal strip (1) to form said gas outlet (201).

5. A metal honeycomb heating body for a gas range as set forth in claim 1, wherein said convex structure (2) is a second protrusion (22), each of said second protrusions (22) comprising a hollowed-out protrusion (221) and a sub-protrusion (222) disposed one above the other.

6. The metal honeycomb heating body for the gas range as set forth in claim 5, wherein said hollowed projections (221) and said sub projections (222) are respectively provided at the upper half section and the lower half section in the width direction of the metal strip (1), and the height of said hollowed projections (221) and said sub projections (222) are the same.

7. The metal honeycomb heating body for a gas range as set forth in claim 5 or 6, wherein the hollowed projections (221) have openings at upper and lower ends, wherein the opening at the upper end is an air outlet (201) forming the pore (3), and the opening at the lower end is an air inlet (202) for passing gas.

8. A metal honeycomb heating element for a gas range as described in claim 7, wherein both upper and lower ends of said sub-protrusions (222) are closed; or the upper end of the sub-protrusion (222) forms an opening, and the lower end is closed, wherein the opening at the upper end is an air outlet (201).

9. The metal honeycomb heating element for gas cookers as claimed in claim 7, wherein the hollowed-out projections (221) are integrally formed by punching and drawing the metal strip (1), and the upper and lower ends of the hollowed-out projections (221) are cut and separated from the metal strip (1) to form the gas outlet (201) and the gas inlet (202), respectively.

10. A metal honeycomb heating element for a gas range as set forth in claim 8, wherein said sub-protrusions (222) are integrally formed by punching and drawing said metal strip (1), and the upper ends of said sub-protrusions (222) are cut and separated from said metal strip (1) to form openings and the lower ends are closed.