CN110410792B - Fire cover of kitchen range - Google Patents
Fire cover of kitchen range Download PDFInfo
- Publication number
- CN110410792B CN110410792B CN201910812528.1A CN201910812528A CN110410792B CN 110410792 B CN110410792 B CN 110410792B CN 201910812528 A CN201910812528 A CN 201910812528A CN 110410792 B CN110410792 B CN 110410792B
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- CN
- China
- Prior art keywords
- ring fire
- fire cover
- outer ring
- lid
- inner ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/10—Tops, e.g. hot plates; Rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
Abstract
The invention discloses a stove fire cover which comprises an inner ring fire cover and an outer ring fire cover, wherein a connecting part is arranged on the surface of the inner ring fire cover, the connecting part extends outwards and is connected with the outer ring fire cover, an air supply channel is arranged inside the connecting part, the air supply channel is communicated with a gas chamber of the inner ring fire cover and a gas chamber of the outer ring fire cover, the outer ring fire cover is higher than the inner ring fire cover, and a secondary air channel for supplementing air to the inner ring fire cover is arranged below the outer ring fire cover. This outer loop fire lid of cooking utensils fire lid is fixed mutually through connecting portion and inner ring fire lid to carry the gas through the outside outer loop fire lid of connecting portion, so that the below of outer loop fire lid need not to set up base or gas mixing chamber structure again, thereby make the space of outer loop fire lid below open completely, solved traditional cooking utensils fire lid in, because of outer loop fire lid and the space of outer loop fire lid below are occupied by base or gas mixing chamber, lead to the air to be difficult to supply the defect that gets into the inner ring fire lid.
Description
Technical Field
The invention relates to the field of burners, in particular to a fire cover of a stove.
Background
The fire cover of the gas cooker is used as a core component of the gas cooker, and the performance of the fire cover directly influences the overall performance of the gas cooker.
In the structure of the traditional stove fire cover, an inward air channel, namely a secondary air channel for supplying air into the inner ring fire cover and the outer ring fire cover, is arranged on the surface of a base butted with the outer ring fire cover. For improving the combustion and heating effect of the fire cover of the cooker, the size of the secondary air channel should be as large as possible to improve the air intake, however, the secondary air channel with larger size on the base can occupy the setting space of the air mixing chamber inside the base, if the air mixing chamber is too small or cannot be continuously set into a complete ring shape, the gas can not smoothly enter the fire hole of the outer ring fire cover, and then the combustion and heating effect of the fire cover of the cooker is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a stove fire cover.
The invention solves the technical problems through the following technical scheme:
the utility model provides a cooking utensils fire lid, its includes inner ring fire lid and outer loop fire lid, the surface of inner ring fire lid has connecting portion, connecting portion outwards extend and connect in outer loop fire lid, the inside of connecting portion has air feed channel, air feed channel intercommunication the gas cavity of inner ring fire lid with the gas cavity of outer loop fire lid, outer loop fire lid is higher than the setting of inner ring fire lid, the below of outer loop fire lid has the direction the secondary air passageway of inner ring fire lid supplementary air.
Compare in traditional cooking utensils fire lid, the below space of outer loop fire lid is occupied by the gas mixing chamber that outside ring fire lid carried the gas, the outer loop fire lid of this cooking utensils fire lid is fixed mutually with the inner ring fire lid through connecting portion, and carry the gas through the outside ring fire lid of connecting portion, so that the below of outer loop fire lid need not to set up the gas mixing chamber structure again, thereby make the space of outer loop fire lid below open completely, among the traditional cooking utensils fire lid has been solved, because of the space of outer loop fire lid and outer loop fire lid below is occupied by base or gas mixing chamber, lead to the defect that the air is difficult to supply the entering inner ring fire lid.
Preferably, the connecting portion is located on the upper surface of the inner ring fire cover, and the gas supply channel extends horizontally outwards, so that under the condition that the outer ring fire cover is higher than the inner ring fire cover, the extension length of the connecting portion and the gas supply channel inside the connecting portion is shortened as far as possible without changing the reasonable distance between the outer ring fire cover and the inner ring fire cover, and the gas mixture in the inner ring fire cover can be more smoothly conveyed to the outer ring fire cover.
Preferably, the upper surface of the inner ring fire cover is provided with a convex part, the gas chamber of the inner ring fire cover is formed inside the convex part, and the connecting part is arranged on the surface of the convex part and communicated with the gas chamber inside the convex part, so as to provide a preferred embodiment that the gas supply channel can be positioned on the upper surface of the inner ring fire cover and communicated to the gas chamber of the inner ring fire cover.
Preferably, the cooker fire cover further comprises a pot support, and the bottom of the pot support is fixed on the upper surface of the connecting portion so as to form a platform for bearing a cooker by utilizing a horizontally extending structure of the connecting portion.
Preferably, the upper surface of pot support is followed the radial direction of cooking utensils fire lid extends in the slant, the upper surface of pot support is equipped with a plurality of sawtooth structures, makes the edge of pan bottom surface can block between these sawtooth structures to avoid the pan to produce the slip relatively this cooking utensils fire lid in the use.
Preferably, the top end of the sawtooth structure is in arc transition so as to prevent the sharp corner at the top end of the sawtooth structure from contacting the bottom of the pot and damaging the bottom surface of the pot.
Preferably, the surface of the outer ring fire cover facing one side of the inner ring fire cover is provided with an opening communicated with the gas chamber of the outer ring fire cover, the stove fire cover further comprises a shielding piece, the shielding piece is arranged on the outer ring fire cover and shields the opening, and the surface of the shielding piece is provided with a first fire hole communicated with the gas chamber of the outer ring fire cover.
This cooking utensils fire lid is through setting up the mode of shielding piece on outer ring fire lid surface, makes the surface of shielding piece can form the first fire hole that communicates in the gas chamber of outer ring fire lid. Because shielding piece and outer loop fire lid are two parts, consequently the trompil size and the shape that are located the first fire hole on the shielding piece all can not receive the influence of the trompil size of outer loop fire lid to can effectively reduce the structural design degree of difficulty of cooking utensils fire lid.
Preferably, the shielding piece partially shields the opening, and the opening and the edge of the shielding piece form a second fire hole, so that the shielding piece can form various different types of fire holes at the opening of the gas chamber.
Preferably, the shielding piece is fixed on the lower surface of the outer ring fire cover.
Preferably, the lower part of the outer ring fire cover is open, the shielding piece is fixed on the lower surface of the outer ring fire cover, and the shielding piece and the inner wall surface of the outer ring fire cover jointly define a gas chamber of the outer ring fire cover.
When the shielding piece is detached relative to the outer ring fire cover, the structure can expose the gas cavity of the outer ring fire cover, and the cleaning is convenient. In addition, the lower part of the outer ring fire cover is opened, so that the gas chamber of the outer ring fire cover is conveniently processed.
Preferably, the outer ring fire cover is fixed on the inner ring fire cover through the connecting part, a base is not required to be arranged below the outer ring fire cover for supporting the outer ring fire cover, and the size of a channel of a secondary air channel below the outer ring fire cover can be enlarged.
The positive progress effects of the invention are as follows:
this outer loop fire lid of cooking utensils fire lid is fixed mutually through connecting portion and inner ring fire lid to carry the gas through the outside outer loop fire lid of connecting portion, so that the below of outer loop fire lid need not to set up base or gas mixing chamber structure again, thereby make the space of outer loop fire lid below open completely, solved traditional cooking utensils fire lid in, because of outer loop fire lid and the space of outer loop fire lid below are occupied by base or gas mixing chamber, lead to the air to be difficult to supply the defect that gets into the inner ring fire lid.
Drawings
Fig. 1 is a schematic perspective view of a fire cover of a cooking stove according to an embodiment of the present invention.
Fig. 2 is a schematic view of the internal structure of a fire cover of a cooking range according to an embodiment of the present invention.
Fig. 3 is an exploded structural schematic view of a fire cover of a cooking stove according to an embodiment of the invention.
Fig. 4 is an enlarged schematic view of a portion a of fig. 1.
FIG. 5 is a partial schematic view of the inner structure of the outer fire cover and the shield according to one embodiment of the present invention.
Description of reference numerals:
inner ring fire cover 1, gas chamber 1a
Outer ring fire cover 2, gas chamber 2a
Connecting part 3
Pot support 4
Sawtooth structure 41
Shield 6
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in figures 1 and 2, the invention provides a stove fire cover, which comprises an inner ring fire cover 1 and an outer ring fire cover 2 which are concentrically arranged, and a plurality of connecting parts 3. Wherein, all be equipped with the fire hole that corresponds on inner ring fire lid 1 and the outer loop fire lid 2, a plurality of connecting portion 3 set up between inner ring fire lid 1 and outer loop fire lid 2 along the radial direction equipartition that cooking utensils fire lid respectively, and the one end of this connecting portion 3 is connected on inner ring fire lid 1 surface, and the other end outwards extends and connects on the surface of outer loop fire lid 2.
The connecting portion 3 is provided with a gas supply channel 31 inside, and two ends of the gas supply channel 31 are respectively communicated with the gas chamber 1a of the inner ring fire cover 1 and the gas chamber 2a of the outer ring fire cover 2, so that a gas mixture entering the inner ring fire cover 1 through the injection pipe can be conveyed to the outer ring fire cover 2 through the gas supply channel 31, and a gas mixing chamber or a base structure is not required to be arranged below the outer ring fire cover 2 to supply gas to the outer ring fire cover 2. Meanwhile, the outer ring fire cover 2 is higher than the inner ring fire cover 1, and a secondary air channel 5 for supplying air to the inner ring fire cover 1 is arranged at the lower position of the outer ring fire cover 2 so as to improve the combustion effect of the fire holes on the outer side of the inner ring fire cover 1 and the inner side of the outer ring fire cover 2.
Compared with the traditional stove fire cover, the lower space of the outer ring fire cover 2 is occupied by the base for conveying fuel gas to the outer ring fire cover 2, the outer ring fire cover 2 of the stove fire cover provided by the invention is fixed and communicated to the inner ring fire cover 1 through the connecting part 3, so that the space below the outer ring fire cover 2 can be completely opened, and the defect that air is difficult to supplement into the inner ring fire cover 1 because the outer ring fire cover 2 and the space below the outer ring fire cover 2 are occupied by the base or a gas mixing chamber in the traditional stove fire cover is overcome.
Wherein, the one end of connecting portion 3 is connected in the upper surface of inner ring fire lid 1, and the inside air feed channel 31 of this connecting portion 3 extends to outer ring fire lid 2 along the horizontal direction to under outer ring fire lid 2 is higher than the structure setting of inner ring fire lid 1, under the prerequisite that does not change outer ring fire lid 2 and inner ring fire lid 1 reasonable interval, shorten connecting portion 3 and inside air feed channel 31's extension length as far as possible, make the gas mixture in the inner ring fire lid 1 can be carried to outer ring fire lid 2 more smoothly.
Preferably, as shown in fig. 1, a plurality of protrusions 11 protruding upward are provided on the upper surface of the inner fire cover 1, and the protrusions 11 are circumferentially and uniformly distributed along the circumferential direction of the inner fire cover 1. The gas chamber 1a of the inner ring fire cover 1 is formed inside these bulging portions 11 so that the connecting portion 3 is directly connected to the bulging portions 11 at the end connected to the inner ring fire cover 1 side, enabling the gas in the gas chamber 1a of the inner ring fire cover 1 to enter the gas supply passage 31 via the space inside the bulging portions 11. In other embodiments, the projections may also be used as a pot support for supporting a pot. Particularly, when the pan was placed in this cooking utensils fire lid top, the top of bulge can with the bottom direct contact of pan to under the condition that need not additionally to set up the pot support, utilize the bulge at inner ring fire lid top to realize supporting the purpose of pan.
However, in the present embodiment, the pot supports 4 are relatively independently disposed, and the bottoms of the pot supports 4 are fixed on the upper surface of the connecting portion 3, so that a platform for supporting a pot is formed by the horizontally extending structure of the connecting portion 3, and the pot support 4 can cover a larger area, thereby satisfying the purpose of supporting a large-sized pot.
As shown in fig. 2, the upper surfaces of the pot supports 4 extend obliquely upward along the radial direction of the stove fire cover, so as to position the bottom surface of the pot by using the inclined surfaces pointing to the central position of the stove fire cover. On this basis, in order to improve the positioning effect of the pot support 4 on the bottom surface of the pot, a plurality of sawtooth structures 41 are arranged on the upper surface of the pot support 4, so that the edge of the bottom surface of the pot can be clamped between the specific sawtooth structures 41, and the pot is prevented from sliding relative to the fire cover of the stove in the use process. Preferably, the top ends of the saw-tooth structures 41 are all transited through arcs, so that damage to the bottom surface of the pot caused by direct contact of the sharp-angled structures with the bottom of the pot is avoided.
In addition, in the present embodiment, referring specifically to fig. 3, the pot holder 4, the connecting member, and the outer fire cover 2 are integrally formed and can be mounted on the protruding portion 11 of the inner fire cover 1 in the vertically downward direction.
As shown in fig. 4 and 5, the gas chamber 2a in the outer ring fire cover 2 extends in a direction directed toward the inner ring fire cover 1 and extends to the surface of the outer ring fire cover 2 to form an opening 21. The stove fire cover also comprises a shielding piece 6, the shielding piece 6 is arranged on the outer ring fire cover 2 and shields the open hole 21, and a through hole is arranged on the surface of the shielding piece 6. The through hole penetrates the shutter 6, and both ends are respectively communicated to the outside and the gas chamber 2a to form a first fire hole 61 on the inner side surface of the outer ring fire cover 2.
This cooking utensils fire lid is through the mode that sets up shielding piece 6 on outer ring fire lid 2 surface, makes shielding piece 6's surface can form the first fire hole 61 that communicates in the gas chamber 2a of outer ring fire lid 2. Because the shielding piece 6 and the outer ring fire cover 2 are two parts, the size and shape of the opening 21 of the first fire hole 61 on the shielding piece 6 are not affected by the size of the opening 21 of the outer ring fire cover 2. That is to say, the size and the shape of the first fire hole 61 and the opening 21 correspondingly arranged with the first fire hole can be independently set and processed, so that the contradiction between the air outlet flow of the balance fire hole and the flame stability of the fire hole is reduced, and the structural design difficulty of the stove fire cover is effectively reduced.
In the present embodiment, as shown in fig. 4, the shielding member 6 only partially shields the opening 21, so that the opening 21 and the edge of the shielding member 6 surround to form a second fire hole 22, so that the shielding member 6 can form various types of fire holes at the opening 21 of the gas chamber 2 a. On the basis, the size of the second fire hole 22 should be larger than that of the first fire hole 61, so that the second fire hole 22 forms a main fire hole, and the first fire hole 61 corresponds to a flame stabilizing hole forming the main fire hole, so as to play a role of stabilizing the flame of the main fire hole.
In addition, as shown in fig. 5, the shielding piece 6 is detachable relative to the outer fire cover 2, that is, the size and number of the first fire holes 61 and the layout among the plurality of first fire holes 61 can be changed rapidly by replacing the shielding piece 6 mounted on the outer fire cover 2, so as to adapt to different use requirements. Meanwhile, when the shielding piece 6 is detached, the open hole 21 can be exposed, so that the shielding piece is convenient to clean, and the defects that fire holes of existing cookers are easy to block and difficult to clean are effectively overcome.
In the present embodiment, the cross-sectional shape of the shield 6 is U-shaped and is fixed to the lower surface of the outer ring fire cover 2. Meanwhile, the lower part of the outer ring fire cover 2 is opened, therefore, when the shielding piece 6 is fixed on the lower surface of the outer ring fire cover 2, the shielding piece 6 and the inner wall surface of the outer ring fire cover 2 jointly define the gas chamber structure of the outer ring fire cover 2, and the structure has the following advantages:
firstly, when the shielding piece 6 is removed relative to the outer ring fire cover 2, the gas chamber 2a of the outer ring fire cover 2 can be exposed, and the cleaning is convenient. Secondly, because the lower part of outer ring fire lid 2 is opened, also convenient to carry out processing to the gas chamber 2a of outer ring fire lid 2.
Through the mode of shielding piece 6 and the combination of outer ring fire lid 2, the inside gas chamber that supplies the gas flow that forms of outer ring fire lid 2 for outer ring fire lid 2 is fixed in inner ring fire lid 1 through connecting portion 3, need not directly to set up under the condition of base, can not change outer ring fire lid 2's conventional structure too much yet, can reduce the design degree of difficulty. How the shielding piece 6 is fixed on the lower surface of the outer ring fire cover 2 can be realized by adopting a screw fixing mode in the prior art so as to be convenient to detach; welding and the like can be adopted for realizing the connection, so that the connection strength and the reliability are ensured.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (9)
1. A stove fire cover comprises an inner ring fire cover and an outer ring fire cover, and is characterized in that the surface of the inner ring fire cover is provided with a connecting part, the connecting part extends outwards and is connected with the outer ring fire cover, an air supply channel is arranged inside the connecting part, the gas supply channel is communicated with the gas cavity of the inner ring fire cover and the gas cavity of the outer ring fire cover, the outer ring fire cover is higher than the inner ring fire cover, a secondary air channel for supplementing air to the inner ring fire cover is arranged below the outer ring fire cover, the connecting part is positioned on the upper surface of the inner ring fire cover, the air supply channel extends outwards horizontally, the upper surface of the inner ring fire cover is provided with a convex part, a gas chamber of the inner ring fire cover is formed inside the convex part, the connecting part is arranged on the surface of the protruding part and communicated with a gas chamber inside the protruding part.
2. The cooktop fire lid of claim 1, further comprising a pan support, the bottom of the pan support being secured to an upper surface of the connecting portion.
3. The fire cover of a cooker as claimed in claim 2, wherein the upper surface of the pot support extends obliquely upward along the radial direction of the fire cover of the cooker, and the upper surface of the pot support is provided with a plurality of sawtooth structures.
4. The cooktop fire lid of claim 3, wherein the tips of the saw tooth structures transition through an arc.
5. The stove fire cover of claim 1, wherein the surface of the outer ring fire cover facing the inner ring fire cover is provided with an opening communicated with the gas chamber of the outer ring fire cover, the stove fire cover further comprises a shielding member, the shielding member is arranged on the outer ring fire cover and shields the opening, and the surface of the shielding member is provided with a first fire hole communicated with the gas chamber of the outer ring fire cover.
6. The cooktop fire lid of claim 5, wherein the shield partially shields the opening, the opening and an edge of the shield forming a second fire hole.
7. The cooktop fire cap of claim 5, wherein the shield is secured to a lower surface of the outer ring fire cap.
8. The cooking range fire lid of claim 7, wherein the lower portion of the outer ring fire lid is open, the shielding member is fixed to the lower surface of the outer ring fire lid, and the shielding member and the inner wall surface of the outer ring fire lid jointly define the gas chamber of the outer ring fire lid.
9. The cooktop fire lid of any one of claims 1-8, wherein the outer ring fire lid is secured to the inner ring fire lid by the connection portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812528.1A CN110410792B (en) | 2019-08-30 | 2019-08-30 | Fire cover of kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910812528.1A CN110410792B (en) | 2019-08-30 | 2019-08-30 | Fire cover of kitchen range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410792A CN110410792A (en) | 2019-11-05 |
| CN110410792B true CN110410792B (en) | 2021-02-26 |
Family
ID=68369339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910812528.1A Active CN110410792B (en) | 2019-08-30 | 2019-08-30 | Fire cover of kitchen range |
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| Country | Link |
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| CN (1) | CN110410792B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747344B (en) * | 2021-01-08 | 2021-11-26 | 宁波方太厨具有限公司 | Pot support and contain its combustor |
| CN113154470B (en) * | 2021-05-25 | 2023-01-20 | 江西省波力福工贸有限公司 | High-foot furnace end with double valves |
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| CN201496964U (en) * | 2009-07-23 | 2010-06-02 | 宁波樱奇电器实业有限公司 | Combustor of embedded household gas stove |
| CN202267061U (en) * | 2011-08-30 | 2012-06-06 | 比亚迪股份有限公司 | Combustor of gas kitchen range |
| CN204880119U (en) * | 2015-08-27 | 2015-12-16 | 宁波市天马厨具有限公司 | Fire lid of gas -cooker |
| CN205316318U (en) * | 2015-12-03 | 2016-06-15 | 广东星立方厨房科技有限公司 | Upper air inlet type stove burner |
| CN208907623U (en) * | 2018-10-18 | 2019-05-28 | 杭州老板电器股份有限公司 | Burner and gas-cooker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9989248B2 (en) * | 2015-09-08 | 2018-06-05 | Whirlpool Corporation | Premixed stamped inner flames burner with eccentric injection venturi |
| US10436451B2 (en) * | 2016-10-06 | 2019-10-08 | Whirlpool Corporation | Cap to change inner flame burner to vertical flame |
-
2019
- 2019-08-30 CN CN201910812528.1A patent/CN110410792B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201496964U (en) * | 2009-07-23 | 2010-06-02 | 宁波樱奇电器实业有限公司 | Combustor of embedded household gas stove |
| CN202267061U (en) * | 2011-08-30 | 2012-06-06 | 比亚迪股份有限公司 | Combustor of gas kitchen range |
| CN204880119U (en) * | 2015-08-27 | 2015-12-16 | 宁波市天马厨具有限公司 | Fire lid of gas -cooker |
| CN205316318U (en) * | 2015-12-03 | 2016-06-15 | 广东星立方厨房科技有限公司 | Upper air inlet type stove burner |
| CN208907623U (en) * | 2018-10-18 | 2019-05-28 | 杭州老板电器股份有限公司 | Burner and gas-cooker |
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| Publication number | Publication date |
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| CN110410792A (en) | 2019-11-05 |
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