CN110553298A - heat shield for stove and stove with same - Google Patents
heat shield for stove and stove with same Download PDFInfo
- Publication number
- CN110553298A CN110553298A CN201810560228.4A CN201810560228A CN110553298A CN 110553298 A CN110553298 A CN 110553298A CN 201810560228 A CN201810560228 A CN 201810560228A CN 110553298 A CN110553298 A CN 110553298A
- Authority
- CN
- China
- Prior art keywords
- secondary air
- air inlet
- heat shield
- inlet channel
- annular wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 claims description 47
- 230000007306 turnover Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 16
- 230000009467 reduction Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 16
- 239000011810 insulating material Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 235000014347 soups Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- 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
- F23D14/66—Preheating the combustion air or gas
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
Abstract
The invention relates to a heat shield for a stove, which comprises an annular shield body, wherein the bottom of the shield body is provided with at least three support legs, and the heat shield is characterized in that: the invention also provides a stove utilizing the heat shield for the stove, compared with the prior art, the invention has the advantages that the caliber of the secondary air inlet channel is wide at the bottom and narrow at the top, thereby forming a unique long and flat secondary air inlet channel, the secondary air inlet channel can strengthen the suction effect on the secondary air, and the preheating effect on the secondary air entering from the secondary air inlet channel is better; in addition, the 'upper narrow' 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 the external secondary air, while the 'lower wide' of the secondary air inlet channel can increase the air inlet area of the lower part, thereby solving the problem of the reduction of the air inlet area caused by the 'upper narrow' of the secondary air inlet channel.
Description
Technical Field
the invention relates to a heat shield for a stove, and also relates to a stove with the heat shield.
Background
In the actual use process of the existing gas stove, because a pot is placed on a pot support for heating, and a certain space interval is formed between the pot and a burner, the heat energy generated by gas combustion is used for heating the pot, and a considerable part of the heat energy is dissipated to the surrounding environment, so that energy waste is caused; in order to solve the problems, heat collection and energy collection are provided in China in recent years, for example, an energy collection ring for a gas stove and the gas stove with the energy collection ring are disclosed in Chinese patent CN203404823U, and an energy collection type gas stove is disclosed in Chinese patent CN204042984U, and the stove is also provided with an energy collection pot support, although the energy collection ring structure can reduce the consumption of heat energy to a certain extent, and can also reduce the radiation heat of flame to a toughened glass panel; but the secondary air inlet channel who supplies the secondary air to get into is all seted up to current heat exchanger shield, and this secondary air inlet channel's bore is same width from top to bottom basically to the bore is all seted up great, and secondary air inlet channel's height is also higher, when giving outer loop and inner ring supply more secondary air, still brings additional problem easily: 1. if the bottom of the gas mixing chamber of the burner is mostly contacted with the outside cold air through the secondary air inlet channel, the heat of the gas mixing chamber is easily taken away, and the possibility of outward heat dissipation is increased; 2. and simultaneously, the secondary air can not be effectively preheated.
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 in actual use, the energy collecting ring is in surface contact with the liquid containing disc, and the two are in surface contact, which easily causes the following problems, i.e. the heat dissipation area of the energy collecting ring to the liquid containing disc is increased; and secondly, overflowing liquid is easily gathered on the contact surface of the energy gathering ring and the liquid containing disc and is not easy to discharge, and the overflowing liquid is easily burnt to dry so that the liquid containing disc becomes black.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heat shield for a stove, which can effectively collect heat and can also effectively preheat secondary air, aiming at the prior art.
Another technical problem to be solved by the present invention is to provide a heat shield for a kitchen range, which can reduce the heat dissipation of the bottom of the pan support leg to the liquid containing tray, in view of the above-mentioned current state of the art.
The invention also provides a cooker which has the functions of heat collection and energy accumulation and does not influence secondary air inlet so as to ensure full combustion of gas by applying the heat insulation cover.
The technical scheme adopted by the invention for solving the technical problems is as follows: this kitchen is with heat exchanger that separates, including the annular cover body, the bottom of the cover body has at least three stabilizer blades, its characterized in that: and a secondary air inlet channel which is communicated with the inside and the outside is formed between the adjacent support legs, and the caliber of the secondary air inlet channel is wide at the bottom and narrow at the top.
Further, the vertical distance D1 between the top wall of the secondary air intake channel and the support leg and the distance D2 between the two side walls of the secondary air intake channel satisfy the following relationship that D1 is less than D2. The secondary air inlet is longer in width but lower in height, so that a unique long and flat secondary air inlet channel is formed, and the secondary air inlet channel has two remarkable benefits: 1. the suction effect on the secondary air can be strengthened, namely, the air supply speed of the secondary air is improved; 2. the effect of preheating the secondary air by the long and flat channel is better, and if the height of the secondary air inlet channel is higher, the heat loss of the secondary air inlet channel is more; the height of the long and flat secondary air inlet channel is not high, only a small part of the bottom of the air mixing chamber of the burner is in contact with the 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 air mixing chamber is reduced, and the preheating effect of the heat insulation cover body on the secondary air entering from the secondary air inlet channel is better.
Preferably, the ratio of D1 to D2 is 1: 4-1: 7. The secondary air inlet channel's "narrow-up" can satisfy and reduce the contact of combustor gas mixing chamber upper portion and external secondary air, but brought the problem that secondary air inlet channel upper portion air inlet area reduces simultaneously, however secondary air inlet channel's "wide down" can increase the air inlet area of lower part to compensate the problem that the air inlet area that brings because of secondary air inlet channel's "narrow-up" reduces, this design can effectively balance the heat dissipation of gas mixing chamber and the hidden danger that secondary air inlet channel air inlet area reduction brought. If the proportion relationship between the two is too small, the secondary air suction function is not easy to be strengthened, and if the proportion relationship between the two is too large, the height of the secondary air inlet channel is too small, the width of the secondary air inlet channel is too wide, and the air inlet area of the secondary air inlet channel is easily too small.
further, the top wall of the secondary air inlet channel gradually inclines upwards from the outer periphery to the center. On one hand, the design can strengthen the suction effect on secondary air; on the other hand, the design of the inclination of the secondary air inlet channel with high inside and low outside has a directional flow guiding effect on the secondary air, ensures that the secondary air just faces the fire outlet hole of the outer ring fire cover after passing through the heat insulation cover, 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 cover further comprises the liquid containing disc, the bottom of the support leg of the cover body is provided with an inclined plane which gradually inclines upwards from bottom to top and outwards from inside to outside, and the edge of the inclined plane is in line contact with the liquid containing disc. The cover body can also be directly in line contact with the panel of the cooker, so that the heat dissipation from the bottom of the support leg of the cover body to the liquid containing disc is reduced to the maximum extent, and the heat efficiency of the cooker is improved.
In order to better support the cover body, the outer periphery 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 edge of the inclined plane of the supporting leg, and the upper part of the turnover edge is abutted against the inner side of the supporting leg.
In order to realize the heat insulation function of the cover body, the cover body is composed of an upper layer cover and a lower layer cover, and a cavity is formed between the upper layer cover and the lower layer cover. The cavity can be filled with air, heat insulating materials or vacuumized, the heat insulating materials such as ceramic fibers are good heat insulating materials, the heat insulating materials can play a good heat insulating role in the heat collecting cavity, loss of heat is prevented, the air is the most economical and popular heat insulating material, and heat transfer of the cover body to the outside is reduced by utilizing the good heat insulating characteristics of the air.
The lower layer cover is provided with concave-convex structures at least at three positions on the bottom wall corresponding to the cavity to form the support legs, and the bottom inclined plane of each support leg is provided with a first through hole penetrating through the cavity. The cavity structure can ensure that the overflowing liquid can finally flow to the four notches, namely the support legs, after flowing to the cavity of the base, the first through holes are formed in the inclined planes of the bottoms of the support legs, the overflowing liquid can finally flow to the liquid containing disc or the panel through the first through holes conveniently, and the phenomenon that the overflowing liquid is burnt to form the liquid containing disc to be black is effectively prevented. Meanwhile, the supporting legs are also in a cavity structure due to the forming mode of the supporting legs, on one hand, the volume of the supporting leg accommodating cavity is increased, namely, the capacity of air in the cavity is increased, the heat transfer quantity of the upper cover to the four supporting legs can be effectively reduced, and the heat dissipation of the four supporting legs to a cooker panel or a liquid containing disc is also reduced.
In order to prevent overflowing liquid from being accumulated on the contact surface between the bottom of the supporting leg and the liquid containing disc, 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 layer cover is gradually inclined downwards from inside to outside along the radial direction, a liquid storage area is formed together with the side peripheral wall of the upper layer cover, and a second through hole is formed in the liquid storage area corresponding to the position of the support leg. This deposit liquid region is favorable to the deposit of hot water juice overflow, prevents that hot water juice overflow from covering to block up the combustor fire hole toward combustor inside stream from the upper strata, realizes anti-overflow liquid, and simultaneously, hot water juice overflow 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 vacuum pumping, the upper layer cover and the lower layer cover are of an integrated structure.
In order to be easily disassembled, the upper layer cover and the lower layer cover are of split structures. Meanwhile, the detachable assembly mode can prevent the deformation of the cover body caused by the fact that the air inside the cavity is heated and expanded after the cavity is completely closed.
in order to realize the detachability of the upper layer cover and the lower layer cover, the realization mode has a plurality of modes, and from the view point of convenient processing, the inside edge of the lower layer cover vertically upwards extends to form a first annular wall, the inside edge of the upper layer cover correspondingly downwards extends to form a second annular wall, and a connecting piece which can connect the first annular wall and the second annular wall is arranged between the first annular wall and the second annular wall.
In order to realize the connection of the upper layer cover and the lower layer cover, the selected mode comprises a plurality of clamping modes which are connected by up-down sliding or circumferential rotating, the second annular wall at least partially covers the outer part 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 layer cover is restrained in a state that the upper layer cover moves relative to the lower layer cover.
The clamping mode that moves and connect is preferred with the circumference soon, the connecting piece is including setting up at least two lugs on the second annular wall outer wall face to and at least a set of interval sets up breach and the semi-closed groove that the opening is down on first annular wall internal face, and under the lug rotated the state that gets into in the semi-closed groove from the breach, upper cover can be retrained on the lower cover. During the equipment, aim at the breach with the lug that covers on the upper strata earlier, rotatory upper strata cover makes the lug cover from the lower part opening screw in semi-closed inslot of breach to make the upper strata cover can restrict and cover under on.
In order to facilitate the projection to slide into the semi-closed groove from the notch, a guide block is formed on the inner wall surface of the first annular wall between the notch and the semi-closed groove, and the lower end surface of the guide block gradually inclines downwards from the notch to the semi-closed groove.
The invention provides a cooker using the heat shield for the cooker to solve the third technical problem, which comprises a cooker panel and a burner, wherein the burner comprises a gas mixing chamber and a secondary air inlet arranged on the gas mixing chamber, the heat shield is arranged on the cooker panel and surrounds the burner, and the heat shield is characterized in that: the secondary air inlet channel of the heat shield cover body and the secondary air inlet are arranged in an aligned mode one by one, and the highest point of the top wall of the secondary air inlet channel is lower than the highest point of the secondary air inlet.
Preferably, the highest point of the top wall of the secondary air inlet channel of the heat shield cover 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 invention has the advantages that the aperture of the secondary air inlet channel is wide at the bottom and narrow at the top, thereby forming the unique long and flat secondary air inlet channel, the secondary air inlet channel can strengthen the suction effect on the secondary air, namely, the air supply speed of the secondary air is improved; the invention also provides a cooker with the heat shield, wherein the highest position of the secondary air inlet channel of the heat shield cover body is lower than the highest position of the secondary air inlet, if the height of the secondary air inlet channel is higher, the heat loss of the secondary air inlet channel is more, and the height of the long and flat secondary air inlet channel is not high, only a small part of the bottom of the burner air mixing chamber is contacted with the outside 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 upper part of the air mixing chamber is reduced, and the heat shield body has a better preheating effect on the secondary air entering from the secondary air inlet channel; in addition, the 'upper narrow' 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 the external secondary air, but brings the problem of reducing the air inlet area at the upper part of the secondary air inlet channel, however, the 'lower wide' of the secondary air inlet channel can increase the air inlet area at the lower part, thereby remedying the problem of reducing the air inlet area caused by the 'upper narrow' of the secondary air inlet channel, and the design skillfully can effectively balance the heat dissipation of the air mixing chamber and the hidden trouble caused by the reduction of the air inlet area of the secondary air inlet channel.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at one angle;
FIG. 3 is a schematic view of another angle of FIG. 1;
FIG. 4 is a schematic view of a heat shield body disposed 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 structural diagram of an upper mask in an embodiment of the present invention;
FIG. 7 is a schematic view of a lower mask 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 an embodiment of the present invention with an insulating shroud placed on a cooktop panel;
Fig. 10 is a cross-sectional view of a portion of fig. 9.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 10, which are preferred embodiments of the present invention, the heat shield for a stove of this embodiment includes an annular shield body 1, the shield body 1 is a double-layer structure formed by an upper layer shield 11 and a lower layer shield 12, and a cavity 13 is provided between the upper layer shield 11 and the lower layer shield 12, and air is filled in the cavity 13, so that the heat insulation effect is achieved by using poor heat transfer performance of air, and the purpose of high temperature inside the upper layer shield 11 and low temperature outside the lower layer shield 12 is achieved, thereby achieving high concentration of heat inside and less heat dissipation outside, wherein the lower layer shield 12 forms the support legs 2 by sinking down, so that the support legs 2 are also in the cavity 13 structure, on one hand, the volume of the cavity of the support legs 2 is increased, that is, the volume of air in the cavity 13 is increased, the heat transfer amount of the upper layer shield 11 to the four support legs 2 can be effectively 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 the area surrounded by the inner side edge of the cover body 1 from outside to inside, as secondary supplementary air of the burner, a secondary air inlet channel 3 is formed between the adjacent support legs 2 at the bottom of the cover body 1, the caliber of the secondary air inlet channel 3 is wide from bottom to top, 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 that D1 is less than D2, meanwhile, the proportion of D1 and D2 is preferably 1:5, and the unique long and flat secondary air inlet channel can strengthen the suction effect on the secondary air, namely improve the air supply speed of the secondary air; the effect of preheating the secondary air by the long and flat channel is better, and if the height of the secondary air inlet channel 3 is higher, the heat loss of the secondary air inlet channel is more; the height of the long and flat secondary air inlet channel 3 is not high, only a small part of the bottom of the air mixing chamber of the burner is contacted with the outside cold air, so that the heat of the upper part 412 of the air mixing chamber can be well concentrated, the outward heat dissipation of the air mixing chamber is reduced, and the heat insulation cover body 1 has a better preheating effect on the secondary air entering from the secondary air inlet channel 3. In addition, the 'upper narrow' of the secondary air inlet channel 3 can meet the requirement of reducing the contact between the upper part 412 of the air mixing chamber of the burner and the external secondary air, but brings the problem of reducing the air inlet area of the upper part 412 of the secondary air inlet channel 3, however, the 'lower wide' of the secondary air inlet channel 3 can increase the air inlet area of the lower part 411, thereby making up the problem of reducing the air inlet area caused by the 'upper narrow' of the secondary air inlet channel 3, and the design can effectively balance the heat dissipation of the air mixing chamber and the hidden trouble caused by 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 outer periphery to the center. The inclined design has a directional flow guiding effect on secondary air, ensures that the secondary air just faces the fire outlet hole of the outer ring fire cover after passing through the heat insulation cover, reduces the supply resistance of the secondary air to outer ring flame, and can ensure that the secondary air is supplied more quickly; meanwhile, heat generated by heating of the furnace end 6 during combustion can be transferred to the cover body 1, so that energy can be effectively gathered, and heat energy can be better reflected. This cover body 1 can split structure also can be integrative structure, and the evacuation is realized easily to integrative structure, and the split structure then realizes dismantling easily, and simultaneously, detachable assembly can prevent that cavity 13 leads to the deformation of cover body 1 after airtight inside air is heated the inflation completely. In the present embodiment, which is explained by taking the detachable case as an example, in order to realize the detachable of the upper layer cover 11 and the lower layer cover 12, the second annular wall 112 at least partially covers the outside of the first annular wall 121, and the connecting member is provided on the contact surface of the second annular wall 112 and the first annular wall 121, so that the upper layer cover 11 is restrained in a state where the upper layer cover 11 moves relative to the lower layer cover 12. The connecting piece can be realized in various modes, and the clamping mode of circumferential rotation and connection is preferred from the viewpoint of convenient processing: the inner side edge of the lower layer cover 12 extends vertically upwards to form a first annular wall 121, the inner side edge of the upper layer 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 two annular walls. The connecting member includes at least two protrusions 1121 disposed on the outer wall surface of the second annular wall 112, and at least one set of notches 1211 and semi-closed slots 1212 with downward openings, which are disposed on the inner wall surface of the first annular wall 121 at intervals, in order to facilitate the protrusions 1121 to slide into the semi-closed slots 1212 from the notches 1211, 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 slots 1212, the lower end surface of the guide block 1213 is gradually inclined downward from the notches 1211 to the semi-closed slots 1212, and the upper housing 11 can be constrained on the lower housing 12 in a state where the protrusions 1121 are rotated into the semi-closed slots 1212 from the notches 1211. During assembly, the protrusion 1121 of the upper housing 11 is aligned with the notch 1211, and the upper housing 11 is rotated to screw the protrusion 1121 into the semi-enclosed slot 1212 from the lower opening 411 of the notch 1211, so that the upper housing 11 can be constrained on the lower housing 12.
In addition, the heat shield for the stove in the embodiment further comprises a liquid containing disc 4 arranged below the heat shield cover body 1, the bottom of the support leg 2 of the cover body 1 is provided with an inclined surface 21 which gradually inclines upwards from bottom to top and outwards from inside to outside, and the edge of the inclined surface 21 is in line contact with the liquid containing disc 4. Certainly, the cover body 1 can also be directly in line contact with the stove panel 5, so that the heat dissipation from the bottom of the support leg 2 of the cover body 1 to the liquid containing disc 4 is reduced to the maximum extent, and the heat efficiency of the stove is improved. In order to better support the cover body 1, the outer periphery of the liquid containing disc 4 is provided with a turned edge 41 which is turned outwards, the lower part 411 of the turned edge 41 is in line contact with the edge of the inclined plane 21 of the supporting leg 2, and the upper part 412 of the turned edge 41 is abutted against the inner side of the supporting leg 2. In order to achieve 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, 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 heat insulating role in the heat collecting cavity, the loss of heat is prevented, the air is the most economical and popular heat insulating material, and the outward heat transfer of the cover body 1 is reduced by utilizing the excellent heat insulating characteristic of the air. The bottom wall of the lower layer cover 12 corresponding to the cavity 13 is at least provided with three concave-convex structures to form the support legs 2, the bottom inclined plane 21 of the support legs 2 is provided with first through holes 211 penetrating through the cavity 13, the structure of the cavity 13 can ensure that overflowing liquid flows to the base cavity 13 and finally flows to four notches, namely the support legs 2, the bottom inclined plane 21 of the support legs 2 is provided with the first through holes 211, correspondingly, the upper surface of the bottom of the upper layer cover 11 gradually inclines downwards along the radial direction from inside to outside to form a liquid storage area 111 together with the side peripheral wall of the upper layer cover 11, and the position of the liquid storage area 111 corresponding to the support legs 2 is provided with second through holes 1111. This liquid storage area 111 is advantageous for the deposition of the soup overflow, preventing the soup overflow from blocking the burner fire hole from the upper cover 11 to the burner interior, achieving the anti-overflow, and simultaneously, the soup overflow can also enter the cavity 13 through the second through hole 1111 and be discharged through the first through hole 211 on the leg 2. Preferably, in order to prevent the overflowing liquid from being accumulated on the contact surface between the bottom of the leg 2 and the liquid containing tray 4, the lower portion 411 of the folded edge 41 is exposed out of the first through hole 211, so as to effectively prevent the overflowing liquid from being burnt to form the phenomenon that the liquid containing tray 4 becomes black. Meanwhile, the supporting feet 2 are also in a cavity 13 structure due to the forming mode of the supporting feet 2, on one hand, the volume of the cavity of the supporting feet 2 is increased, namely, the capacity of air in the cavity 13 is increased, the heat transfer quantity of the upper layer cover 11 to the four supporting feet 2 can be effectively reduced, and the heat dissipation of the four supporting feet 2 to the kitchen range panel 5 or the liquid containing disc 4 is also reduced.
As shown in fig. 9 and 10, the schematic diagram of the heat shield placed on the cooker includes a cooker panel 5 and a burner, the burner mainly includes a burner 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 tray 4 of the cooker panel 5 through support legs 2 at the bottom of the shield body 1, in order to achieve good heat collecting effect and meet the supplement of secondary air of inner ring fire, the secondary air inlet channel 3 of the shield body 1 and the secondary air inlet 61 arranged on the gas mixing chamber are aligned one by one, the supplement of secondary air is effectively carried out, the gas utilization rate is improved, meanwhile, in order to better concentrate the heat at the upper part 412 of the gas mixing chamber and reduce the outward heat radiation thereof, the heat shield body 1 has better preheating effect on the secondary air entering from the secondary air inlet channel 3, 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 3mm, and the problem of air inlet area reduction caused by height reduction of the secondary air inlet channel 3 due to narrow top and wide bottom is solved, and the design can effectively balance the heat dissipation of the air mixing chamber and the relation between the air inlet areas of the secondary air inlet channel 3.
Claims (18)
1. The utility model provides a kitchen is with heat exchanger that separates, 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 communicated with the inside and the outside is formed between the adjacent support legs (2), and the aperture of the secondary air inlet channel (3) is wide at the bottom and narrow at the top.
2. the cooktop heat shield of claim 1, wherein: the vertical distance D1 between the top wall of the secondary air inlet channel (3) and the supporting leg (2) and the distance D2 between the two side walls of the secondary air inlet channel (3) satisfy the following relation that D1 is less than D2.
3. The cooktop heat shield of claim 2, wherein: the ratio of D1 to D2 is 1: 4-1: 7.
4. The cooktop heat shield of claim 2, wherein: and the top wall (31) of the secondary air inlet channel (3) is gradually inclined upwards from the periphery to the center.
5. The heat shield for a cooktop according to any one of claims 1 to 4, wherein: the liquid storage cover is characterized by further comprising a liquid containing disc (4), wherein the bottom of the supporting leg (2) of the cover body (1) is provided with an inclined plane (21) which gradually inclines upwards from bottom to top and outwards from inside to outside, and the edge of the inclined plane (21) is in line contact with the liquid containing disc (4).
6. The cooktop heat shield of claim 5, 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 plane (21) of the supporting leg (2), and the upper part (412) of the turnover edge (41) is abutted against the inner side of the supporting leg (2).
7. The cooktop heat shield of claim 6, wherein: the mask body (1) is composed of an upper layer mask (11) and a lower layer mask (12), and a cavity (13) is formed between the upper layer mask (11) and the lower layer mask (12).
8. The cooktop heat shield of claim 7, wherein: at least three positions of the lower layer cover (12) corresponding to the bottom wall of the cavity (13) are provided with concave-convex structures to form the support legs (2), and the bottom inclined plane (21) of each support leg (2) is provided with a first through hole (211) penetrating through the cavity (13).
9. the cooktop heat shield of claim 8, wherein: the lower part (411) of the flanging edge (41) is exposed out of the first through hole (211).
10. The cooktop heat shield of claim 7, 8, or 9, wherein: the upper surface of the bottom of the upper layer cover (11) is gradually inclined downwards from inside to outside along the radial direction, a liquid storage area (111) is formed together with the side peripheral wall of the upper layer cover (11), and a second through hole (1111) is formed in the position, corresponding to the support leg (2), of the liquid storage area (111).
11. the cooktop heat shield of claim 7, 8, or 9, wherein: the upper layer cover (11) and the lower layer cover (12) are of an integrated structure.
12. The cooktop heat shield of claim 7, 8, or 9, wherein: the upper layer cover (11) and the lower layer cover (12) are of split structures.
13. The cooktop heat shield of claim 12, wherein: the inner side edge of the lower layer cover (12) vertically extends upwards to form a first annular wall (121), the inner side edge of the upper layer 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 (121) and the second annular wall (112).
14. The cooktop heat shield of claim 13, wherein: the second annular wall (112) covers at least partially the outside of the first annular wall (121), and the connection is provided at the interface of the second annular wall (112) and the first annular wall (121) so as to constrain the upper shell (11) in the state in which the upper shell (11) is moved relative to the lower shell (12).
15. The cooktop heat shield of claim 14, wherein: the connecting piece comprises at least two protrusions (1121) arranged on the outer wall surface of the second annular wall (112), at least one group of notches (1211) arranged on the inner wall surface of the first annular wall (121) at intervals and a semi-closed groove (1212) with a downward opening, and the upper layer cover (11) can be restrained on the lower layer cover (12) under the condition that the protrusions (1121) rotate into the semi-closed groove (1212) from the notches (1211).
16. The cooktop heat shield of claim 15, wherein: a guide block (1213) is formed on the inner wall surface of the first annular wall (121) between the notch (1211) and the semi-closed groove (1212), and the lower end surface of the guide block (1213) is gradually inclined downwards from the notch (1211) to the semi-closed groove (1212).
17. A cooking appliance using the heat shield of any one of claims 1 to 16, comprising a cooking appliance panel (5) and a burner, wherein the burner comprises a gas mixing chamber and a secondary air inlet (61) arranged on the gas mixing chamber, the heat shield is arranged on the cooking appliance panel (6) and surrounds the burner, and the heat shield is characterized in that: the secondary air inlet channel (3) of the heat shield cover body (1) and the secondary air inlet (61) are aligned one by one, and the highest point of the top wall (31) of the secondary air inlet channel (3) is lower than the highest point of the secondary air inlet (61).
18. the cooker of claim 17, wherein the highest point of the top wall (31) of the secondary air intake channel (3) of the heat shield body (1) is lower than the highest point of the secondary air intake (61), and the difference delta between the two is 3-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560228.4A CN110553298A (en) | 2018-06-03 | 2018-06-03 | heat shield for stove and stove with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810560228.4A CN110553298A (en) | 2018-06-03 | 2018-06-03 | heat shield for stove and stove with same |
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| Publication Number | Publication Date |
|---|---|
| CN110553298A true CN110553298A (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810560228.4A Pending CN110553298A (en) | 2018-06-03 | 2018-06-03 | heat shield for stove and stove with same |
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| Country | Link |
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| CN (1) | CN110553298A (en) |
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| CN111578344A (en) * | 2020-05-19 | 2020-08-25 | 宁波方太厨具有限公司 | Heat shield and cooker comprising same |
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