CN110553298B - Heat insulation cover for stove and stove using the heat insulation cover - Google Patents
Heat insulation cover for stove and stove using the heat insulation cover Download PDFInfo
- Publication number
- CN110553298B CN110553298B CN201810560228.4A CN201810560228A CN110553298B CN 110553298 B CN110553298 B CN 110553298B CN 201810560228 A CN201810560228 A CN 201810560228A CN 110553298 B CN110553298 B CN 110553298B
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- Prior art keywords
- secondary air
- air inlet
- heat shield
- inlet channel
- cover
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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
- F23D14/46—Details
- F23D14/62—Mixing devices; Mixing tubes
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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
- F23D14/66—Preheating the combustion air or gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
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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
- F24C15/107—Pan supports or grates therefor
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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
- F24C15/14—Spillage trays or grooves
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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
- F24C15/34—Elements and arrangements for heat storage or insulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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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
本发明涉及一种灶用隔热罩，包括有环形的罩体，所述罩体的底部具有至少有三个支脚，其特征在于：所述相邻支脚之间形成内外贯通的二次进风通道，并且所述二次进风通道的口径下宽上窄，本发明还提供一种利用上述灶用隔热罩的灶具，与现有技术相比，本发明的优点在于二次进风通道的口径下宽上窄，从而形成独特的长扁形的二次空气进风通道，此种二次进风通道能强化对二次空气的抽吸作用，还能对从二次进风通道进入的二次空气预热效果更好；另外，二次进风通道的“上窄”能满足在减少燃烧器混气室上部与外界二次空气的接触，然而二次进风通道的“下宽”却能增加下部的进风面积，从而弥补因二次进风通道的“上窄”所带来的进风面积减少的问题。
The present invention relates to a heat insulation cover for stoves, comprising an annular cover body, wherein the bottom of the cover body has at least three legs, and is characterized in that: a secondary air inlet channel that penetrates inside and outside is formed between adjacent legs, and the aperture of the secondary air inlet channel is wider at the bottom and narrower at the top. The present invention also provides a stove using the above-mentioned heat insulation cover for stoves. Compared with the prior art, the advantage of the present invention is that the aperture of the secondary air inlet channel is wider at the bottom and narrower at the top, thereby forming a unique long and flat secondary air inlet channel, which can strengthen the suction effect on the secondary air and can also have a better preheating effect on the secondary air entering from the secondary air inlet channel; in addition, the "narrowness at the top" of the secondary air inlet channel can meet the requirement of reducing the contact between the upper part of the burner mixing chamber and the external secondary air, while the "wideness at the bottom" of the secondary air inlet channel can increase the air inlet area of the lower part, thereby compensating for the problem of reduced air inlet area caused by the "narrowness at the top" of the secondary air inlet channel.
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
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 such energy collecting ring structure can reduce the consumption of heat energy to a certain extent, and can also reduce the radiant heat of flame to a toughened glass panel; but the secondary air inlet channel that supplies secondary air to get into has all been seted up to current heat exchanger, and the bore of this secondary air inlet channel is from top to bottom basically same wide to the bore is all seted up great, and the height of secondary air inlet channel is also higher, when giving outer loop and inner loop supplementary more secondary air, still brings additional problem easily: 1. if the bottom of the gas mixing chamber of the burner is contacted with the external cold air mostly through the secondary air inlet channel, the heat of the gas mixing chamber is easily taken away, and the possibility of outward heat dissipation of the gas mixing chamber is increased; 2. meanwhile, the preheating effect on secondary air cannot be effectively achieved.
In addition, in order to reduce the heated area of the glass panel, a method of transferring a high-temperature area on the glass panel to the liquid containing disc is often adopted, so that the energy collecting ring is often matched with the liquid containing disc for use in actual use, and the energy collecting ring is in surface contact with the liquid containing disc, so that the problems that the heat dissipation area of the energy collecting ring to the liquid containing disc is increased easily caused by the surface contact of the energy collecting ring and the liquid containing disc; 2. the overflowed liquid is easy to gather on the contact surface of the energy gathering ring and the liquid containing disc, and is not easy to discharge, so that the overflowed liquid is easy to burn dry, and the liquid containing disc is blackened.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heat shield for a kitchen range, which can effectively collect heat and can effectively preheat secondary air.
Another technical problem to be solved by the invention is to provide a heat shield for a kitchen range, which can reduce heat dissipation of the bottom of a pot support leg to a liquid containing plate.
The invention further solves the technical problem by applying the heat shield to provide a kitchen range which has the heat collection and energy accumulation effects and does not influence secondary air intake so as to ensure that fuel gas is fully combusted.
The technical scheme adopted for solving the technical problems is as follows: this heat shield for kitchen is including annular cover body, the bottom of cover body has three stabilizer blades at least, its characterized in that: and secondary air inlet channels which are internally and externally communicated are formed between the adjacent support legs, and the caliber of each secondary air inlet channel is wider at the lower part and narrower at the upper part.
Further, the vertical distance D1 between the top wall of the secondary air intake passage and the support leg and the distance D2 between the two side walls of the secondary air intake passage satisfy the following relationship, D1< D2. The secondary air inlet has a longer width but a lower height, thereby forming a unique long flat secondary air inlet channel, and the secondary air inlet channel has two remarkable advantages: 1. the suction effect on secondary air can be enhanced, namely the air supply speed of the secondary air is improved; 2. the secondary air preheating effect of the long flat channel is better, and if the secondary air inlet channel is higher, the heat loss is more; the height of the long flat secondary air inlet channel is not high, only a small part of the bottom of the combustor air mixing chamber is in contact with external cold air, so that heat of the upper part of the air mixing chamber can be well concentrated, outward heat dissipation of the air mixing chamber is reduced, and the heat insulation cover body has a better preheating effect on secondary air entering from the secondary air inlet channel.
More preferably, the ratio of D1 to D2 is between 1:4 and 1:7. The upper narrow part of the secondary air inlet channel can meet the requirement of reducing the contact between the upper part of the air mixing chamber of the burner and external secondary air, but simultaneously brings about the problem of reducing the air inlet area of the upper part of the secondary air inlet channel, however, the lower wide part of the secondary air inlet channel can increase the air inlet area of the lower part, thereby compensating the problem of reducing the air inlet area caused by the upper narrow part of the secondary air inlet channel. If the proportion of the two is too small, the secondary air suction effect is not easy to be enhanced, and if the proportion of the two is too large, the secondary air inlet channel is too small in height and too wide in width, and the air inlet area of the secondary air inlet channel is easy to be too small.
Further, the top wall of the secondary air inlet channel gradually inclines upwards from the periphery to the center. 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.
In order to reduce the heat dissipation of the bottom of the pot support leg to the liquid containing disc, the pot support further comprises the liquid containing disc, the bottom of the support leg of the cover body is provided with an inclined surface which gradually inclines upwards from bottom to top and gradually inclines outwards from inside to outside, and the edge of the inclined surface is in line contact with the liquid containing disc. Of course, the cover body can also be in line contact with the kitchen range panel directly, so that heat dissipation from the bottom of the support leg of the cover body to the liquid containing plate is reduced to the greatest extent, and the heat efficiency of the kitchen range is improved.
In order to better support the cover body, the periphery edge of the liquid containing disc is provided with a turnover edge which is turned outwards, the lower part of the turnover edge is in line contact with the inclined plane edge of the supporting leg, and the upper part of the turnover edge is propped against the inner side of the supporting leg.
In order to realize the heat insulation function of the cover body, the cover body consists of an upper cover and a lower cover, and a cavity is formed between the upper cover and the lower cover. The cavity can be filled with air, heat insulating material or vacuumized, the heat insulating material such as ceramic fiber is a good heat insulating material, the heat insulating material can play a good role in heat insulation and preservation of the heat collecting cavity, heat loss is prevented, the air is the most economical and common heat insulating material, and heat transfer of the cover body outwards is reduced by utilizing the good heat insulating property of the heat insulating material.
The lower cover is provided with concave-convex structures at least at three positions on the bottom wall of the corresponding cavity to form the supporting legs, and the bottom inclined surfaces of the supporting legs are provided with first through holes penetrating through the cavity. The cavity structure can ensure that the overflow liquid finally flows to four notches, namely the supporting legs, after flowing to the bottom cavity of the base, the bottom inclined surfaces of the supporting legs are provided with the first through holes, so that the overflow liquid can flow to the liquid containing tray or the panel through the first through holes, and the phenomenon that the overflow liquid is burnt to form the liquid containing tray to turn black is effectively prevented. Meanwhile, the forming mode of the support legs leads to the support legs to be of a cavity structure, on one hand, the volume of the support leg containing cavity is increased, namely, the capacity of air in the cavity is increased, the heat transfer quantity of the upper cover to the four support legs can be effectively reduced, and meanwhile, the heat dissipation of the four support legs to a kitchen range panel or a liquid containing disc is reduced.
In order to prevent the overflow liquid from accumulating on the contact surface between the bottom of the support leg and the liquid containing plate, the lower part of the turnover edge is exposed out of the first through hole.
Further, the upper surface of the bottom of the upper cover gradually inclines downwards from inside to outside along the radial direction, a liquid storage area is formed together with the side peripheral wall of the upper cover, and a second through hole is formed in the position, corresponding to the supporting leg, of the liquid storage area. This deposit liquid region is favorable to the deposit of hot water juice overflow liquid, prevents hot water juice overflow liquid from the upper cover to the inside flow of combustor jam combustor fire hole, realizes preventing the overflow liquid, simultaneously, hot water juice overflow liquid can also get into the cavity through the second through-hole to discharge through the first through-hole on the stabilizer blade.
In order to easily realize vacuumizing, the upper cover and the lower cover are of an integrated structure.
In order to be easily detachable, the upper cover and the lower cover are of split structures. Meanwhile, the detachable assembly mode can prevent the deformation of the cover body caused by the expansion of the air in the cavity after the cavity is completely sealed.
In order to realize the dismantlement of upper cover and lower cover, the mode of realization has a plurality of, from the convenient angle of processing, the inboard edge of lower cover extends vertically upwards has first annular wall, the inboard edge of upper cover then extends downwards correspondingly has the second annular wall, have the connecting piece that can connect both between first annular wall and the second annular wall.
In order to realize the connection of the upper cover and the lower cover, the selected modes are a plurality of clamping modes which slide up and down to be connected or clamping modes which move circumferentially to be connected, the second annular wall at least partially covers the outside of the first annular wall, and the connecting piece is arranged on the contact surface of the second annular wall and the first annular wall, so that the upper cover is restrained in a state that the upper cover moves relative to the lower cover.
Preferably, the connecting piece comprises at least two protruding blocks arranged on the outer wall surface of the second annular wall, and at least one group of notches and semi-closed grooves with downward openings arranged on the inner wall surface of the first annular wall at intervals, and the upper cover can be restrained on the lower cover in a state that the protruding blocks rotate from the notches to enter the semi-closed grooves. When the upper cover is assembled, the convex blocks on the upper cover are aligned with the gaps, and the upper cover is rotated to enable the convex blocks to be screwed into the semi-closed grooves from the lower openings of the gaps, so that the upper cover can be restrained on the lower cover.
In order to facilitate the convex block to slide into the semi-closed groove from the notch, a guide block is formed between the notch and the semi-closed groove on the inner wall surface of the first annular wall, and the lower end surface of the guide block gradually inclines downwards from the notch to the semi-closed groove.
The invention provides a kitchen range using the heat shield for a kitchen range for solving the third technical problem, which comprises a kitchen range 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 is arranged on the kitchen range panel and surrounds the burner, and is characterized in that: the secondary air inlet channel of the heat shield body and the secondary air inlet are aligned one by one, and the highest position of the top wall of the secondary air inlet channel is lower than the highest point of the secondary air inlet.
Preferably, the highest position of the top wall of the secondary air inlet channel of the heat shield body is lower than the highest point of the secondary air inlet, and the difference delta between the two is 3-6 mm.
Compared with the prior art, the secondary air inlet channel has the advantages that the caliber of the secondary air inlet channel is wider at the lower part and narrower at the upper part, so that a unique long flat secondary air inlet channel is formed, and the secondary air inlet channel can strengthen the suction effect on secondary air, namely the air supply speed of the secondary air is improved; the invention also provides a kitchen range with the heat shield, the highest position of the secondary air inlet channel of the heat shield body is lower than the highest point of the secondary air inlet, if the secondary air inlet channel is higher, the heat loss is more, the secondary air inlet channel is not higher, only a small part of the bottom of the combustor air mixing chamber is in contact with external cold air, so that the heat of the upper part of the air mixing chamber can be well concentrated, the outward heat dissipation of the secondary air inlet channel is reduced, and the heat shield body has better preheating effect on secondary air entering from the secondary air inlet channel; in addition, the upper narrow part of the secondary air inlet channel can meet the requirement of reducing the contact between the upper part of the air mixing chamber of the burner and external secondary air, but simultaneously brings about the problem of reducing the air inlet area of the upper part of the secondary air inlet channel, however, the lower wide part of the secondary air inlet channel can increase the air inlet area of the lower part, thereby compensating the problem of reducing the air inlet area caused by the upper narrow part of the secondary air inlet channel.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at an angle;
FIG. 3 is a schematic view of the structure of FIG. 1 at another angle;
FIG. 4 is a schematic view showing a structure in which a heat insulating cover is placed on a liquid containing tray according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a schematic view of an upper cover in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of a lower cover according to an embodiment of the present invention;
FIG. 8 is an exploded view of FIG. 1;
FIG. 9 is a partial cross-sectional view of a heat shield placed on a cooktop panel in an embodiment of the invention;
Fig. 10 is a partial cross-sectional view of fig. 9.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 10, the heat shield for a kitchen range in the preferred embodiment of the present invention comprises 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 13 is arranged between the upper shield 11 and the lower shield 12, air is filled in the cavity 13, and poor heat transfer performance of the air is utilized to perform heat preservation and insulation, so that 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 the effects of high inner side heat concentration and low outer side heat dissipation are achieved, wherein the lower shield 12 forms a support leg 2 through a concave shape, so that the support leg 2 is also in a cavity 13 structure, on one hand, the volume of the cavity of the support leg 2 is increased, namely, the volume of air in the cavity 13 is increased, the heat transfer amount of the upper shield 11 to four support legs 2 can be effectively reduced, and meanwhile, the heat dissipation of the four support legs 2 to the kitchen range panel 5 is also reduced. In addition, the height of the inner side edge of the cover body 1 is lower than that of the outer side edge, in order to lead the air on the upper surface of the cover body 1 to be guided from outside to inside into the area surrounded by the inner side edge of the cover body 1, as secondary supplementary air of a burner, a secondary air inlet channel 3 is formed between adjacent support legs 2 at the bottom of the cover body 1, the caliber lower width of the secondary air inlet channel 3 is narrow, the vertical distance D1 between the top wall of the secondary air inlet channel 3 and the support legs 2 and the distance D2 between the two side walls of the secondary air inlet channel 3 satisfy the following relation, D1< D2, and meanwhile, the proportion of D1 to D2 is preferably 1:5, and the unique long flat secondary air inlet channel can strengthen the suction effect on secondary air, namely, the air supply speed of the secondary air is improved; the secondary air preheating effect of the long flat channel is better, and if the secondary air inlet channel 3 is higher, the heat loss is more; the height of the long flat secondary air inlet channel 3 is not high, only a small part of the bottom of the burner air mixing chamber is in contact with external cold air, so that heat of the upper part 412 of the air mixing chamber can be well concentrated, outward heat dissipation of the air mixing chamber is reduced, and the heat shield body 1 has better preheating effect on secondary air entering from the secondary air inlet channel 3. Moreover, the upper narrow part of the secondary air inlet channel 3 can meet the requirement of reducing the contact between the upper part 412 of the burner air mixing chamber and external secondary air, but the problem of reducing the air inlet area of the upper part 412 of the secondary air inlet channel 3 is brought at the same time, however, the lower wide part of the secondary air inlet channel 3 can increase the air inlet area of the lower part 411, so that the problem of reducing the air inlet area caused by the upper narrow part of the secondary air inlet channel 3 is overcome, and the design can effectively balance the hidden trouble caused by the heat dissipation of the air mixing chamber and the reduction of the air inlet area of the secondary air inlet channel 3.
The top wall of the secondary air inlet channel 3 gradually inclines upwards from the center in the peripheral direction. 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 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 can enable the secondary air to be supplied more rapidly; meanwhile, heat generated by heating during combustion of the furnace end 6 can be transferred to the cover body 1, so that energy can be effectively collected, and heat energy can be better reflected. The cover body 1 can be of a split structure or an integrated structure, the integrated structure is easy to realize vacuumizing, the split structure is easy to disassemble, and meanwhile, the detachable assembly mode can prevent the deformation of the cover body 1 caused by the heated expansion of the air inside the cavity 13 after the cavity 13 is completely sealed. In this embodiment, the upper cover 11 and the lower cover 12 are detachably taken as an example, and the second annular wall 112 at least partially covers the outside of the first annular wall 121, and the connecting member is disposed on the contact surface between the second annular wall 112 and the first annular wall 121, so that the upper cover 11 is limited in a state that the upper cover 11 moves relative to the lower cover 12. The connection member is realized in various ways, and from the viewpoint of convenient processing, the clamping manner of connection by circumferential rotation is preferable: the inner edge of the lower cover 12 extends vertically upwards to form a first annular wall 121, and the inner edge of the upper cover 11 extends correspondingly downwards to form a second annular wall 112, and a connecting piece capable of connecting the first annular wall 121 and the second annular wall 112 is arranged between the first annular wall and the second annular wall. The connector comprises at least two protruding blocks 1121 arranged on the outer wall surface of the second annular wall 112, and at least one group of notches 1211 and semi-closed grooves 1212 with downward openings which are arranged on the inner wall surface of the first annular wall 121 at intervals, wherein a guide block 1213 is formed on the inner wall surface of the first annular wall 121 between the notches 1211 and the semi-closed grooves 1212 in order to facilitate sliding of the protruding blocks 1121 into the semi-closed grooves 1212, the lower end surface of the guide block 1213 is gradually inclined downwards from the notches 1211 to the semi-closed grooves 1212, and the upper cover 11 can be restrained on the lower cover 12 in a state that the protruding blocks 1121 rotate from the notches 1211 into the semi-closed grooves 1212. When assembling, the bump 1121 on the upper cover 11 is aligned with the notch 1211, and the upper cover 11 is rotated so that the bump 1121 is screwed into the semi-closed slot 1212 from the lower portion 411 of the notch 1211, thereby the upper cover 11 can be restrained on the lower cover 12.
In addition, the heat shield for the kitchen range in the embodiment further comprises a liquid containing disc 4 arranged below the heat shield body 1, the bottom of the support leg 2 of the heat shield body 1 is provided with an inclined surface 21 which gradually inclines from bottom to top and from inside to outside, and the edge of the inclined surface 21 is in line contact with the liquid containing disc 4. Of course, the cover body 1 can also be in direct line contact with the kitchen range panel 5, so that heat dissipation from the bottoms of the support legs 2 of the cover body 1 to the liquid containing disc 4 is reduced to the greatest extent, and the heat efficiency of the kitchen range is improved. In order to better support the cover 1, the outer periphery of the liquid containing plate 4 is provided with an outward turnover edge 41, the lower part 411 of the turnover edge 41 is in line contact with the edge of the inclined surface 21 of the support leg 2, and the upper part 412 of the turnover edge 41 is abutted against the inner side of the support leg 2. In order to realize the heat insulating function of the cover 1, the cover 1 is composed of an upper cover 11 and a lower cover 12, and a cavity 13 is formed between the upper cover 11 and the lower cover 12. The cavity 13 can be filled with air, a heat insulating material or vacuumized, the heat insulating material such as ceramic fiber is a good heat insulating material, the heat insulating material can play a good role in heat insulation and preservation of the heat collecting cavity, heat loss is prevented, the air is the most economical and common heat insulating material, and the heat transfer to the outside of the cover body 1 can be reduced by utilizing the good heat insulating and preserving property of the heat insulating material. Wherein, the lower cover 12 has a concave-convex structure on the bottom wall corresponding to the cavity 13 to form the supporting leg 2, and the bottom inclined surface 21 of the supporting leg 2 is provided with a first through hole 211 penetrating through the cavity 13, the cavity 13 structure can ensure that the overflow flows to four notches, namely the supporting leg 2 after flowing to the bottom cavity 13, and the bottom inclined surface 21 of the supporting leg 2 is provided with the first through hole 211, correspondingly, the upper surface of the bottom of the upper cover 11 gradually inclines downwards from inside to outside along the radial direction, and forms a liquid storage area 111 together with the side peripheral wall of the upper cover 11, and the position of the liquid storage area 111 corresponding to the supporting leg 2 is provided with a second through hole 1111. This liquid storage area 111 facilitates the deposition of the soup overflow, prevents the flow of the soup overflow from the upper cover 11 to the burner interior to block the burner fire holes, and realizes the overflow prevention, and at the same time, the soup overflow can also enter the cavity 13 through the second through holes 1111 and be discharged through the first through holes 211 on the support legs 2. Preferably, in order to prevent the overflow liquid from accumulating on the contact surface between the bottom of the support leg 2 and the liquid containing plate 4, the lower part 411 of the turnover edge 41 is exposed out of the first through hole 211, so that the phenomenon that the overflow liquid is burnt to dry and the liquid containing plate 4 is blackened is effectively prevented. Meanwhile, the forming mode of the support legs 2 causes the support legs 2 to be in a cavity 13 structure, on one hand, the volume of the containing cavity of the support legs 2 is increased, namely, the capacity of air in the cavity 13 is increased, the heat transfer quantity of the upper cover 11 to the four support legs 2 can be effectively reduced, and meanwhile, the heat dissipation of the four support legs 2 to the kitchen range panel 5 or the liquid containing disc 4 is also reduced.
As shown in fig. 9 and 10, the heat shield is placed on a stove, the stove comprises a stove panel 5 and a burner, the burner mainly comprises a stove head 6, a gas mixing chamber, an inner fire cover 7 and an outer fire cover 8, the heat shield is placed on a liquid containing disc 4 of the stove panel 5 through a support leg 2 at the bottom of a shield body 1, in order to achieve good heat collecting effect and meet the supplement of secondary air of inner ring fire, a secondary air inlet channel 3 of the shield body 1 is aligned with a secondary air inlet 61 arranged on the gas mixing chamber one by one, the supplement of secondary air is effectively carried out, the gas utilization rate is improved, meanwhile, in order to well concentrate the heat of the upper part 412 of the gas mixing chamber, the outward heat dissipation of the secondary air is reduced, the highest position of a top wall 31 of the secondary air inlet channel 3 of the heat shield body 1 is lower than the highest point of the secondary air inlet 61, the difference delta between the two is 3mm, and the upper narrow lower width of the secondary air inlet channel 3 is not reduced because of the height of the secondary air inlet channel 3 is reduced, and the heat dissipation area of the secondary air inlet channel 3 is designed to be balanced.
Claims (15)
1. The utility model provides a heat shield for kitchen, is including annular cover body (1), the bottom of cover body (1) has at least three stabilizer blade (2), its characterized in that: and a secondary air inlet channel (3) which is internally and externally communicated is formed between the adjacent support legs (2), the caliber lower width of the secondary air inlet channel (3) is narrow, the vertical distance D1 between the top wall of the secondary air inlet channel (3) and the support legs (2) and the distance D2 between the two side walls of the secondary air inlet channel (3) satisfy the following relation, D1< D2, and the ratio of D1 to D2 is between 1:4 and 1:7.
The top wall (31) of the secondary air inlet channel (3) gradually inclines upwards from the periphery to the center.
2. The heat shield for a kitchen range according to claim 1, wherein: the multifunctional liquid storage device is characterized by further comprising a liquid storage disc (4), wherein the bottom of the supporting leg (2) of the cover body (1) is provided with an inclined surface (21) which gradually inclines upwards from bottom to top and gradually inclines outwards from inside to outside, and the edge of the inclined surface (21) is in line contact with the liquid storage disc (4).
3. The heat shield for a kitchen range according to claim 2, wherein: the periphery of the liquid containing disc (4) is provided with a turnover edge (41) which is turned outwards, the lower part (411) of the turnover edge (41) is in line contact with the edge of the inclined surface (21) of the support leg (2), and the upper part (412) of the turnover edge (41) is propped against the inner side of the support leg (2).
4. A heat shield for a kitchen range according to claim 3, wherein: the cover body (1) is composed of an upper cover (11) and a lower cover (12), and a cavity (13) is formed between the upper cover (11) and the lower cover (12).
5. The heat shield for a kitchen range according to claim 4, wherein: the lower cover (12) is provided with concave-convex structures at least at three positions on the bottom wall of the corresponding cavity (13) to form the supporting leg (2), and a first through hole (211) penetrating through the cavity (13) is formed in the bottom inclined surface (21) of the supporting leg (2).
6. The heat shield for a kitchen range according to claim 5, wherein: the first through hole (211) exposes the lower part (411) of the turnover edge (41).
7. The heat shield for a kitchen range according to claim 4,5 or 6, wherein: the upper surface of upper cover (11) bottom radially inwards outwards gradually downward sloping forms liquid storage area (111) with upper cover (11)'s side peristome together, liquid storage area (111) are corresponding to the position of stabilizer blade (2) has seted up second through-hole (1111).
8. The heat shield for a kitchen range according to claim 4, 5 or 6, wherein: the upper cover (11) and the lower cover (12) are of an integrated structure.
9. The heat shield for a kitchen range according to claim 4, 5 or 6, wherein: the upper cover (11) and the lower cover (12) are of split structures.
10. The heat shield for a kitchen range according to claim 9, wherein: the inner side edge of the lower cover (12) vertically extends upwards to form a first annular wall (121), the inner side edge of the upper cover (11) correspondingly extends downwards to form a second annular wall (112), and a connecting piece capable of connecting the first annular wall (121) and the second annular wall (112) is arranged between the first annular wall and the second annular wall.
11. The heat shield for a kitchen range according to claim 10, wherein: the second annular wall (112) is at least partially covered outside the first annular wall (121), and the connecting piece is arranged on the contact surface of the second annular wall (112) and the first annular wall (121), so that the upper cover (11) is restrained under the state that the upper cover (11) moves relative to the lower cover (12).
12. The heat shield for a kitchen range according to claim 11, wherein: the connecting piece comprises at least two protruding blocks (1121) arranged on the outer wall surface of the second annular wall (112), at least one group of notches (1211) and semi-closed grooves (1212) with downward openings, which are arranged on the inner wall surface of the first annular wall (121), and the upper cover (11) can be restrained on the lower cover (12) under the state that the protruding blocks (1121) rotate from the notches (1211) into the semi-closed grooves (1212).
13. The heat shield for a kitchen range according to claim 12, wherein: a guide block (1213) is formed between the notch (1211) and the semi-closed groove (1212) on the inner wall surface of the first annular wall (121), and the lower end surface of the guide block (1213) gradually inclines downwards from the notch (1211) to the semi-closed groove (1212).
14. A hob using a heat shield according to any one of the claims 1 to 13, comprising a hob panel (5) and a burner, said burner comprising a gas mixing chamber and a secondary air inlet (61) arranged on said gas mixing chamber, said heat shield being arranged on the hob panel (5) and enclosing said burner, characterized in that: the secondary air inlet channels (3) of the heat shield body (1) are aligned with the secondary air inlets (61) one by one, and the highest position of the top wall (31) of the secondary air inlet channels (3) is lower than the highest point of the secondary air inlets (61).
15. The cooking range according to claim 14, characterized in that the highest point of the top wall (31) of the secondary air inlet channel (3) of the heat shield body (1) is lower than the highest point of the secondary air inlet (61), and the difference delta between the two is 3-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560228.4A CN110553298B (en) | 2018-06-03 | 2018-06-03 | Heat insulation cover for stove and stove using the heat insulation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560228.4A CN110553298B (en) | 2018-06-03 | 2018-06-03 | Heat insulation cover for stove and stove using the heat insulation cover |
Publications (2)
| Publication Number | Publication Date |
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| CN110553298A CN110553298A (en) | 2019-12-10 |
| CN110553298B true CN110553298B (en) | 2024-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810560228.4A Active CN110553298B (en) | 2018-06-03 | 2018-06-03 | Heat insulation cover for stove and stove using the heat insulation cover |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578345B (en) * | 2020-05-19 | 2021-06-18 | 宁波方太厨具有限公司 | Heat shield and cooker comprising same |
| CN111578344B (en) * | 2020-05-19 | 2021-10-29 | 宁波方太厨具有限公司 | Heat shield and cooker comprising same |
| CN114135905B (en) * | 2021-12-31 | 2025-06-13 | 杭州老板电器股份有限公司 | Pot rack and gas stove |
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|---|---|---|---|---|
| CN202915423U (en) * | 2012-10-31 | 2013-05-01 | 王学福 | Novel energy-saving heat collecting device for kitchenware |
| CN203052761U (en) * | 2012-12-10 | 2013-07-10 | 广东节王电气科技有限公司 | Energy collecting cover of gas cooker |
| CN208804732U (en) * | 2018-06-03 | 2019-04-30 | 宁波方太厨具有限公司 | A kind of stove heat shield and application have the kitchen range of the stove heat shield |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2401821B1 (en) * | 2011-09-06 | 2014-02-28 | Universitat Politècnica De Catalunya | REFLECTING BASE OF IR RADIATION FOR BURNERS. |
| ES2399260B1 (en) * | 2011-09-12 | 2014-07-09 | Sbi Connectors Espa�A, S.A. | "DEVICE TO ATTACH THE CROWN EFFECT" |
| CN103244979A (en) * | 2012-02-02 | 2013-08-14 | 王学福 | Energy-saving heat collection apparatus of kitchen range |
| 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 |
| CN104266231B (en) * | 2014-10-09 | 2016-08-17 | 中国石油大学(华东) | A kind of environment protection energy conservation hood for gas kitchen range |
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2018
- 2018-06-03 CN CN201810560228.4A patent/CN110553298B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202915423U (en) * | 2012-10-31 | 2013-05-01 | 王学福 | Novel energy-saving heat collecting device for kitchenware |
| CN203052761U (en) * | 2012-12-10 | 2013-07-10 | 广东节王电气科技有限公司 | Energy collecting cover of gas cooker |
| CN208804732U (en) * | 2018-06-03 | 2019-04-30 | 宁波方太厨具有限公司 | A kind of stove heat shield and application have the kitchen range of the stove heat shield |
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| CN110553298A (en) | 2019-12-10 |
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