CN109869765B - Heat shield for kitchen range and kitchen range using same - Google Patents
Heat shield for kitchen range and kitchen range using same Download PDFInfo
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- CN109869765B CN109869765B CN201711260415.2A CN201711260415A CN109869765B CN 109869765 B CN109869765 B CN 109869765B CN 201711260415 A CN201711260415 A CN 201711260415A CN 109869765 B CN109869765 B CN 109869765B
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- secondary air
- heat shield
- air inlet
- cover
- burner
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- 238000010411 cooking Methods 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 29
- 230000000694 effects Effects 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Combinations Of Kitchen Furniture (AREA)
- Gas Burners (AREA)
Abstract
The invention relates to a heat shield for a kitchen range, which comprises an annular shield body and is characterized in that: the cover body is a double-layer structure formed by an upper cover and a lower cover, the bottom of the lower cover is provided with convex ribs which are formed by concave-convex structures and are downwards convex, compared with the prior art, the invention has the advantages that the heat-insulating cover for the kitchen range is additionally arranged on the basis of the prior gas kitchen range, the cover body is a double-layer structure formed by the upper cover and the lower cover, the bottom of the lower cover is provided with the convex ribs which are formed by concave-convex structures and are downwards convex, the invention also discloses a kitchen range using the heat shield, and the secondary air supplementing groove of the shield body can be aligned with the secondary air inlet of the combustor air mixing chamber one by one, so that secondary air supplementing is effectively performed, and the gas utilization rate is improved.
Description
Technical Field
The invention relates to a heat shield for a kitchen range, and also relates to a kitchen range using the heat shield for the kitchen range.
Background
With the development of urban gas industry, the kitchen range industry in China is greatly improved in variety, material, performance, sales and the like. An important point in the improvement of the performance is the improvement of the thermal efficiency. The burner of the household gas cooker belongs to the atmospheric burner. The atmospheric burner is designed according to a partial premixing mode, and the primary air coefficient of the atmospheric burner is 0< alpha <1. The atmospheric burner is divided into a head part and an ejector. The ejector is used for ejecting primary air required by combustion, and the burner head is used for uniformly distributing the mixture of fuel gas and air to the fire holes and carrying out stable and complete combustion. The gas of the gas stove mainly comprises liquefied petroleum gas, natural gas, biogas and the like, which are all primary energy sources. Taking natural gas as an example, the natural gas usage amount of China rises every year, and part of the natural gas is used for household gas. Most of household gas is consumed on the cooking appliance, so that the heat efficiency of the cooking appliance is improved, the consumption of gas resources and the emission of greenhouse gases can be reduced, the gas cost of a user can be reduced, and the air quality is improved. Therefore, the improvement of the efficiency of the gas cooker is always one of the striving targets of the cooker industry in China. In the actual use process of the existing gas cooker, as the cooker is arranged on the cooker support to heat, a certain space is reserved between the cooker and the burner, so that a considerable part of heat energy generated by gas combustion is dissipated into the surrounding environment besides being used for heating the cooker, and energy waste is caused; in order to solve the above problems, in recent years, a number of heat collecting and energy collecting rings for gas cookers and gas cookers with the heat collecting rings have appeared in China, such as disclosed in China patent CN203404823U, and a number of energy collecting gas cookers, such as disclosed in China patent CN204042984U, also have energy collecting pot supports therein, and although the energy collecting rings can reduce heat consumption to a certain extent, the gas cookers are generally placed in ventilation places of a kitchen, and when wind power is high in the external environment, combustion flames of the gas cookers may swing and be unstable, sometimes even cause flameout, and affect use. In addition, the existing common gas stove also has the phenomena of flameout, ignition failure and the like of the gas stove caused by the overflow of the boiling soup into the burner head, the fire hole and the like of the burner.
Disclosure of Invention
The invention aims to provide a heat shield for a kitchen range, which can effectively improve the utilization rate of fuel gas.
The invention aims to solve the technical problem of providing a kitchen range which has the heat collection and energy accumulation effects and does not influence secondary air intake so as to ensure the full combustion of fuel gas by applying the heat shield.
The technical scheme adopted for solving the technical problems is as follows: this heat exchanger for kitchen is including annular cover body, its characterized in that: the cover body is composed of an upper cover and a lower cover, a cavity is formed between the upper cover and the lower cover, and the lower cover is provided with a concave-convex structure on the bottom wall corresponding to the cavity to form a convex rib protruding downwards.
In order to preheat secondary air, the heat efficiency of the kitchen range is effectively improved, a concave-convex structure is utilized to form a channel for separating a bottom cavity of a lower cover into preheated secondary air, and the kitchen range has the following two forming modes:
one of the ribs is at least two and extends radially, and a space is reserved between the two ribs to form a secondary air inlet channel.
The second ribs extend circumferentially and at least two ribs are arranged to form an inner ring and an outer ring, secondary air inlet channels are formed by spacing the ribs between the same rings, and secondary air inlet channels of adjacent rings are staggered and not aligned. By taking two rings as an example for illustration, the convex ribs of the inner ring and the outer ring are formed at the bottom of the lower cover, so that on one hand, the flow guiding effect on secondary air can be realized, on the other hand, the flow guiding channel in the circumferential direction is beneficial to increasing the heating area and the heating time of the secondary air contacted with the bottom of the lower cover, and the secondary air can be effectively preheated, namely, after the secondary air enters from the secondary air inlet channel of the outer ring, the secondary air enters into the area surrounded by the inner side edge of the heat shield from the secondary air inlet channel of the inner ring after moving around the ring.
The top wall of the secondary air inlet channel gradually inclines upwards from outside to inside. On the one hand, the design can strengthen the suction effect on secondary air; on the other hand, the secondary air inlet channel has directional flow guiding effect on secondary air through the high-low slope design, ensures that the secondary air passes through the fire outlet hole of the outer ring fire cover right after passing through the heat shield, reduces the supply resistance of the secondary air to the outer ring flame, and ensures that the secondary air is supplied more rapidly.
The cavity is filled with air, heat insulating material or vacuumized. The heat insulating material, such as ceramic fiber, is one excellent heat insulating material, and has excellent heat insulating effect on heat collecting cavity to prevent heat loss.
The upper cover and the lower cover are of an integrated structure or a split structure. The integrated structure is easy to realize vacuumizing, and the split structure is easy to realize disassembling.
The invention provides a stove using the heat shield for a stove for solving the second technical problem, which comprises a stove panel and a burner, wherein the burner comprises a gas mixing chamber and a secondary air inlet arranged on the gas mixing chamber, and the heat shield surrounds the burner and is placed on the stove panel, and is characterized in that: the secondary air inlet channel at the outermost layer of the heat shield body is aligned with the secondary air inlet one by one.
In order to achieve good heat collecting effect and meet the supplement of secondary air of inner ring fire, the highest position of the inner side edge of the cover body of the heat shield is lower than the main fire hole of the outer fire cover in the combustor but higher than the secondary air inlet in the gas mixing chamber.
Preferably, the diameter of the inner side edge of the heat shield cover body is larger than the diameter of the outer edge of the gas mixing chamber in the burner, and the difference value between the inner side edge of the heat shield cover body and the diameter of the outer edge of the gas mixing chamber in the burner is 13-21 mm, namely the radial clearance delta between the inner side edge of the heat shield cover body and the outer edge of the gas mixing chamber in the burner is 6.5-10.5 mm.
Compared with the prior art, the invention has the advantages that the heat shield for the kitchen range is additionally arranged on the basis of the existing gas kitchen range, the shield body is of a double-layer structure formed by an upper shield and a lower shield, the bottom of the lower shield is provided with convex ribs which are convex downwards, the concave-convex structure is used for forming a channel for separating a bottom cavity of the lower shield into preheated secondary air, the gas combustion is promoted, the gas utilization rate is improved, and the kitchen range with the heat shield is also disclosed.
Drawings
FIG. 1 is a schematic front view of a heat shield according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the back structure of a heat shield according to embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic view showing an exploded structure of a heat shield placed on a kitchen range in embodiment 1 of the present invention;
FIG. 5 is a schematic perspective view of a heat shield according to embodiment 1 of the present invention placed on a kitchen range;
FIG. 6 is a cross-sectional view taken along the direction A-A in FIG. 5;
FIG. 7 is a schematic view showing the back structure of a heat shield according to embodiment 2 of the present invention;
fig. 8 is a cross-sectional view of fig. 7.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1
As shown in fig. 1 to 6, the heat shield for a kitchen range in this embodiment includes an annular shield body 1, the shield body 1 is a double-layer structure formed by an upper shield 11 and a lower shield 12, a cavity 4 is provided between the upper shield 11 and the lower shield 12, air is filled in the cavity 4, poor heat transfer performance of the air is utilized to perform heat preservation and insulation functions, the purposes of high inner side temperature of the upper shield 11 and low outer side temperature of the lower shield 12 are achieved, and therefore the effects of high inner side heat quantity concentration and low outer side heat dissipation are achieved, wherein a concave-convex structure is formed at the bottom of the lower shield 12 to form a convex rib 2 protruding downwards, and the concave-convex structure increases effective preheating of the lower shield 12 on secondary air on one hand. In this embodiment, the ribs 2 extend circumferentially and are formed with inner and outer rings, and the ribs 2 between the same rings are spaced to form secondary air inlet channels 3, and the secondary air inlet channels 3 of adjacent rings are staggered and not aligned. Thereby, the secondary air entering the secondary air intake passage 3 from below the bottom of the lower cover 12 can be sufficiently preheated, thereby improving the heating efficiency.
The height of the inner side edge of the cover 1 is lower than that of the outer side edge, so that the air on the upper surface of the cover 1 can be guided from outside to inside into the area surrounded by the inner side edge of the cover 1, and the top wall of the secondary air inlet channel 3 of each circle is gradually inclined upwards from outside to inside. The inclined design has a directional flow guiding effect on secondary air, ensures that the secondary air passes through the fire outlet hole of the heat shield just right before the outer ring fire cover, reduces the supply resistance of the secondary air to the outer ring flame, and ensures that the secondary air is supplied more rapidly due to the design of wide outside and narrow inside; the cover body 1 can be of a split structure or an integrated structure, the integrated structure is easy to realize vacuumizing, and the split structure is easy to realize disassembling.
As shown in fig. 5, the heat shield is schematically shown to be placed on a kitchen range, the kitchen range comprises a kitchen range panel 5 and a burner 6, the burner 6 mainly comprises a burner 60, a gas mixing chamber 61, an inner fire cover 64 and an outer fire cover 63, the heat shield is placed on the kitchen range panel 5 through support legs at the bottom of the cover body 1, the pot support comprises an annular ring, four pot support legs are uniformly distributed in the circumferential direction of the annular ring, and the annular ring can be placed on the heat shield.
In order to achieve good heat collecting effect and meet the supplement of secondary air of inner ring fire, the inner side edge of the heat shield body 1 is lower than the main fire hole of the outer fire cover in the burner 6 and higher than the secondary air inlet 62 in the air mixing chamber 61, and the diameter of the inner side edge of the shield body 1 of the heat collection energy saving shield for the kitchen range is 13-21 mm larger than the diameter of the outer edge of the air mixing chamber 61 in the burner 6, namely the radial clearance delta between the inner side edge of the shield body 1 of the heat shield for the kitchen range and the outer edge of the air mixing chamber 61 in the burner 6 is 6.5-10.5 mm.
Meanwhile, in order to better supplement secondary air, the secondary air inlet channel 3 of the cover body 1 and the secondary air inlet 62 are aligned one by one, so that the secondary air is effectively supplemented, and the gas utilization rate is improved.
Example 2
As shown in fig. 7 to 8, the structure is basically the same as that of embodiment 1, and the difference is that: the convex ribs 2 of the concave-convex structure are at least two and extend in the radial direction, a secondary air inlet channel 3 is formed between the two convex ribs 2 at intervals, on one hand, in order to increase the heat exchange area and preheat secondary air, on the other hand, the secondary air is preheated, on the other hand, the secondary air preheating is facilitated, and the heating area of the convex ribs 2 and the secondary air is increased; on the other hand, the convex rib 2 is also of a hollow structure, so that the volume of the cavity 4 in the convex rib 2 is increased, the volume of air in the convex rib 2 is increased, and the heat insulation performance of the heat shield is further improved.
Claims (5)
1. The utility model provides a heat shield for kitchen, is including annular cover body (1), its characterized in that: the cover body (1) is composed of an upper cover (11) and a lower cover (12), a cavity (4) is formed between the upper cover (11) and the lower cover (12), and the lower cover (12) is provided with a concave-convex structure on the bottom wall corresponding to the cavity (4) to form a convex rib (2) protruding downwards; at least two ribs (2) extend in a radial direction, and a space is reserved between the two ribs (2) to form a secondary air inlet channel (3); the top wall of the secondary air inlet channel (3) gradually inclines upwards from outside to inside; the cavity (4) is filled with air, heat insulation materials or vacuumized; the upper cover (11) and the lower cover (12) are of an integrated structure.
2. The heat shield for a kitchen range according to claim 1, wherein: the convex ribs (2) extend circumferentially and are at least two to form an inner ring and an outer ring, a space is reserved between the convex ribs (2) between the same rings to form secondary air inlet channels (3), and the secondary air inlet channels (3) of adjacent convex rings are staggered and not aligned.
3. A hob using a heat shield according to any one of the claims 1-2, comprising a hob panel (5) and a burner (6), said burner (6) comprising a plenum (61) and a secondary air inlet (62) provided on said plenum (61), said heat shield enclosing said burner (6) and resting on the hob panel (5), characterized in that: the secondary air inlet channel (3) at the outermost layer of the heat shield body (1) is aligned with the secondary air inlet (62) one by one.
4. A hob according to claim 3, characterized in that the highest of the inner edge of the heat shield body (1) is lower than the outer fire cover main fire hole in the burner (6) but higher than the secondary air inlet (62) in the gas mixing chamber (61).
5. The cooking hob according to claim 3 or 4, characterized in that the diameter of the inner edge of the heat shield body (1) is larger than the diameter of the outer edge of the gas mixing chamber (61) in the burner (6), the difference between them being 13-21 mm, i.e. the radial clearance δ of the inner edge of the shield body (1) of the heat shield and the outer edge of the gas mixing chamber (61) in the burner (6) is 6.5-10.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260415.2A CN109869765B (en) | 2017-12-04 | 2017-12-04 | Heat shield for kitchen range and kitchen range using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711260415.2A CN109869765B (en) | 2017-12-04 | 2017-12-04 | Heat shield for kitchen range and kitchen range using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869765A CN109869765A (en) | 2019-06-11 |
| CN109869765B true CN109869765B (en) | 2024-04-16 |
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ID=66915557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711260415.2A Active CN109869765B (en) | 2017-12-04 | 2017-12-04 | Heat shield for kitchen range and kitchen range using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109869765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578346B (en) * | 2020-05-19 | 2021-08-20 | 宁波方太厨具有限公司 | Stove heat shield and stove comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163965Y (en) * | 1993-07-31 | 1994-05-04 | 李久华 | Range for liquid fuels |
| CN201180996Y (en) * | 2008-03-27 | 2009-01-14 | 关荣佳 | Combustor with secondary air |
| CN201322298Y (en) * | 2008-09-04 | 2009-10-07 | 周玖清 | Fully upper-inlet cooking burner |
| CN201476119U (en) * | 2009-09-04 | 2010-05-19 | 广东万和新电气股份有限公司 | Stove support for domestic gas stove |
| WO2013152726A1 (en) * | 2012-04-12 | 2013-10-17 | 李飞宇 | Upper and lower sleeve connecting mechanism of water inlet valve |
| CN203431955U (en) * | 2013-08-06 | 2014-02-12 | 宁波方太厨具有限公司 | Energy-saving heat collecting cover for kitchen and cooker with cover |
-
2017
- 2017-12-04 CN CN201711260415.2A patent/CN109869765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163965Y (en) * | 1993-07-31 | 1994-05-04 | 李久华 | Range for liquid fuels |
| CN201180996Y (en) * | 2008-03-27 | 2009-01-14 | 关荣佳 | Combustor with secondary air |
| CN201322298Y (en) * | 2008-09-04 | 2009-10-07 | 周玖清 | Fully upper-inlet cooking burner |
| CN201476119U (en) * | 2009-09-04 | 2010-05-19 | 广东万和新电气股份有限公司 | Stove support for domestic gas stove |
| WO2013152726A1 (en) * | 2012-04-12 | 2013-10-17 | 李飞宇 | Upper and lower sleeve connecting mechanism of water inlet valve |
| CN203431955U (en) * | 2013-08-06 | 2014-02-12 | 宁波方太厨具有限公司 | Energy-saving heat collecting cover for kitchen and cooker with cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109869765A (en) | 2019-06-11 |
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