CN111550830A

CN111550830A - Heat insulation cover for kitchen range

Info

Publication number: CN111550830A
Application number: CN202010353716.5A
Authority: CN
Inventors: 刘晓刚; 柯情; 王帅东; 俞瑜; 徐强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-08-18
Anticipated expiration: 2040-04-29
Also published as: CN111550830B

Abstract

The invention discloses a stove heat shield which comprises a heat shield body, wherein the heat shield body is sleeved outside a combustor, the bottom of the heat shield body is detachably connected to a panel, the heat shield body comprises a first channel and a second channel, the first channel is communicated to the outer side of an outer fire cover through a gap between the heat shield body and the outer fire cover, and the second channel is communicated to a gap between the outer fire cover and an inner fire cover through a combustor channel. The second passageway flows to the outside of outer fire lid and the outside of interior fire lid respectively, for the burning of interior fire lid and outer fire lid provides more secondary air, and then improves the combustion efficiency of combustor.

Description

Heat insulation cover for kitchen range

Technical Field

The invention relates to a heat shield of a stove.

Background

At present, most of the cookers on the market adopt a double-layer heat shield to increase the efficiency of the cooker, and the heat shield consists of an inner layer and an outer layer. Two connections exist between the two layers, the inner layer is close to a flame area, the temperature is high, the inner layer is rapidly conducted to the outer layer part through the contact part, and the temperature of the outer layer is also very high. Because the bottom of the outer layer of the heat shield is connected with the first panel, part of heat of the outer layer of the heat shield is transferred to the first panel through heat transfer, so that the temperature of the first panel is excessively high, and potential safety hazards exist; in addition, the outer layer of the heat shield is exposed to air and is subject to ambient convection, resulting in heat transfer from the outer layer of the heat shield to the air by heat conduction and convection.

Because the heat shield radiates heat through the two forms, the heat radiation of the outer layer of the heat shield is faster, and the heat of the secondary air in the heat shield is faster to dissipate, so that the efficiency of the cooker is lower. And secondary air supply channels of the heat shield in the kitchen range on the market are few, so that the secondary air cannot be supplied in time, the utilization of the secondary air is limited, and the efficiency of the kitchen range is reduced.

In summary, the structure of the heat shield of the cooking utensils in the prior art limits the utilization of secondary air, and reduces the efficiency of the cooking utensils.

Disclosure of Invention

The invention aims to overcome the defects that the structure of a heat insulation cover of a kitchen range in the prior art limits the utilization of secondary air and reduces the efficiency of the kitchen range, and provides the heat insulation cover of the kitchen range.

The invention solves the technical problems through the following technical scheme:

the utility model provides a cooking utensils separate heat exchanger, its is including separating the heat exchanger body, separate the outside that combustor was located to heat exchanger body cover, separate the bottom detachably of heat exchanger body and connect in the panel, its characterized in that, separate the heat exchanger body and include first passageway and second passageway, the first passageway warp separate clearance between heat exchanger body and the outer fire lid and lead to the outside of outer fire lid, the second passageway leads to through the combustor passageway space between outer fire lid and the interior fire lid.

In this scheme, through setting up first passageway and second passageway for the outside air of heat exchanger body flows to the outside of outer fire lid and the outside of interior fire lid respectively through first passageway and second passageway, provides more secondary air for the burning of interior fire lid and outer fire lid, and then improves the combustion efficiency of combustor.

Preferably, the heat shield body comprises a first heat insulation layer and a second heat insulation layer which are arranged from top to bottom at intervals, and the second heat insulation layer is arranged at intervals with the panel;

the heat shield body further comprises an annular first side plate and a cylindrical second side plate, the top end of the first side plate is connected with the inner circumferential surface of the first heat insulation layer, and the first heat insulation layer, the first side plate and the second heat insulation layer enclose a first heat insulation cavity;

the top of the second side plate is connected with the peripheral surface of the second heat insulation layer, the bottom of the second side plate is abutted against the panel, and a second heat insulation cavity is defined by the second heat insulation layer, the second side plate and the panel;

the first side plate and the inner side surface of the second heat insulation layer are arranged at intervals, so that the first heat insulation cavity is communicated with the second heat insulation cavity, and the first side plate is close to the outer fire cover;

the stove heat shield further comprises a cylindrical flow guide cover, the top end of the flow guide cover is connected to the bottom end of the first side plate, and the bottom end of the flow guide cover is abutted to the bottom of the base of the outer fire cover.

In this scheme, through first insulating layer and the second insulating layer that sets up two intervals on the heat shield body to form first thermal-insulated cavity and the thermal-insulated cavity of second, make the heat on the first curb plate pass through heat-conduction to first thermal-insulated cavity and the thermal-insulated cavity of second in, in order to reduce the heat conduction rate who separates the heat shield, and then prevent that the panel intensifies and leads to the high temperature at the excessive speed, in order to avoid scalding the user.

And through setting up first thermal-insulated cavity and the thermal-insulated cavity of second for the secondary air that flows to outer fire lid and interior fire lid is through preheating, and then improves the combustion efficiency of combustor.

The air guide sleeve is arranged and has the function of guiding secondary air in the first heat insulation cavity and the second heat insulation cavity, so that the secondary air in the first channel and the second channel can uniformly flow to the outer fire cover and the inner fire cover. The bottom of the air guide sleeve is abutted against the bottom of the base of the outer fire cover so as to ensure that secondary air in the first heat insulation cavity and the second heat insulation cavity does not flow to the periphery of the combustor through other positions of the heat insulation cover body; simultaneously, also make this internal space of heat exchanger that insulates against heat sealed relatively, and then make the temperature in first thermal-insulated cavity and the second thermal-insulated cavity higher, it is better to secondary air's preheating effect, and then improve the combustion efficiency of combustor.

Preferably, the second side plate is provided with a plurality of air inlets at intervals along the circumferential direction, the air guide sleeve is provided with a plurality of air outlets at intervals along the circumferential direction, and the air inlets and the air outlets are both communicated with the second heat insulation cavity.

In this scheme, through set up the air inlet on the second curb plate for outside air passes through the air inlet and flows into in the thermal-insulated cavity of second, and then flows to the outside of outer fire lid and interior fire lid respectively through the gas outlet and provides sufficient secondary air for the gas combustion in the combustor, thereby improves the combustion efficiency of combustor.

Preferably, the air outlet comprises a plurality of first air outlets, and the first air outlets are positioned at the upper end of the air guide sleeve;

the air inlet, the first insulating cavity, and/or the second insulating cavity and the first air outlet form the first channel.

In this scheme, adopt above-mentioned structural style, because secondary air is changeed the upflow after preheating, the upper end of kuppe more is close to the main fire hole of outer fire lid moreover, and the first passageway stroke that forms like this is shorter, and this secondary air of just being convenient for is covered through outer fire of first passageway flow direction, and then improves the combustion efficiency of combustor.

Preferably, the air outlet further comprises a plurality of second air outlets, and the second air outlets are positioned at the lower end of the air guide sleeve;

the air inlet, the first insulating cavity, and/or the second insulating cavity and the second air outlet form the second channel.

In this scheme, because the combustor passageway is the bottom that is located the combustor and is located more than the panel, consequently set up the second gas outlet in the bottom of kuppe for the stroke of second passageway is the shortest, and then makes secondary air change the outside that the flow is covered to interior fire, in order to improve the combustion efficiency of combustor.

Preferably, each of the second air outlets corresponds to one or more of the burner passages.

In this scheme, each second gas outlet corresponds a combustor passageway for all there is the secondary air inflow in every combustor passageway, makes the secondary air that the outer fire of flow direction was covered more even, and then can further improve the combustion efficiency of combustor. And the second gas outlet corresponds a plurality of combustor passageways, has simple structure, convenient processing's advantage.

Preferably, the opening area of the air inlet is larger than that of the air outlet.

In the scheme, the opening area of the air inlet is larger than that of the air outlet, so that air resistance entering the first heat insulation cavity and the second heat insulation cavity is smaller, and air can easily enter the first heat insulation cavity and the second heat insulation cavity; and the resistance of the air flowing out from the air outlet is relatively large, so that the air in the first heat insulation cavity and the second heat insulation cavity can be fully preheated and then flows out from the air outlet, and further the combustion efficiency of the combustor is improved.

Preferably, the heat shield of the cooking utensil further comprises a plurality of limiting parts, the limiting parts are fixedly connected to the side surface of the first side plate at intervals, and the limiting parts extend towards the direction close to the outer fire cover.

In this scheme, through setting up the locating part, the restriction separates the ascending degree of freedom of heat exchanger in the horizontal direction, because locating part and combustor contactless, and then makes the heat on the combustor can only pass to on separating the heat exchanger through heat-conduction, and then has reduced the heat transmission rate of first curb plate to the high temperature that then leads to the panel of the outer lane that prevents to separate the heat exchanger is too high in temperature.

Preferably, the limiting member is a flat limiting plate, and the inclination direction of the limiting plate towards the end face of the outer fire cover is consistent with the inclination direction of the outer wall of the outer fire cover.

In this scheme, adopt above-mentioned structural style for the locating part carries on spacingly to separating the heat exchanger, when the assembly separates the heat exchanger, the locating part can not interfere with the combustor in order to influence the assembly.

Preferably, the heat shield of the cooking utensil further comprises a guide piece, the guide piece is connected to the top surface of the first heat insulation layer, the guide piece surrounds the outer side of the outer fire cover, the guide piece comprises a guide surface, the guide surface and the outer fire cover are arranged at an interval, and the upper end of the guide surface is farther away from the outer fire cover relative to the lower end of the guide surface.

In this scheme, set up the guide and be used for playing the guide effect to secondary air for secondary air upwards flows between the outer wall of combustor and first curb plate, makes the secondary air that upwards flows continuously to supply along the direction of flame through the guide, and then makes secondary air by make full use of, strengthens the flame intensity of combustor, and then promotes the combustion efficiency of combustor.

Preferably, the guide piece is an annular boss, the top of the boss is lower than the center of the main fire hole in the outer fire cover, and the side surface of the boss close to the outer fire cover is the guide surface.

In this scheme, the boss plays the guide effect to the secondary air that flows upward for the secondary air flow direction combustor, and then improves the efficiency of combustor. The height at the top of boss is less than the height at the center of main fire hole, thereby prevents that flame from acting on the boss and reducing the efficiency of combustor, prevents moreover that the temperature of boss from rising too fast, and then leads to the heat to lead to the panel temperature rise too fast on transmitting to the panel from the skin that separates the heat exchanger.

Preferably, the height difference between the top of the boss and the main fire hole is between 0.5 and 3 mm.

In this scheme, adopt above-mentioned structural style, under the condition that prevents to separate the heat exchanger temperature rise too fast, guarantee the guide effect of boss to secondary air, and then improve the efficiency of combustor.

Preferably, the inclination angle of the main fire hole is between 35 and 50 degrees, and the inclination angle of the guide surface is between 40 and 60 degrees.

In this scheme, the secondary air that upwards flows through the clearance between combustor and the first curb plate is led through the slope for the secondary air lasts along the direction supplement of flame, and then improves the combustion efficiency of combustor.

Preferably, the distance between the center line of the top surface of the boss and the outer wall of the outer fire cover is 12-18 mm.

In this scheme, under the circumstances of guaranteeing the boss to secondary air's good guide effect, avoid the boss to be too near the temperature rise that leads to the boss apart from the combustor too fast to prevent that the outer heat dissipation of heat shield is too fast, in order to avoid the panel temperature rise too fast.

Preferably, the lower end of the first side plate is farther away from the side wall of the outer fire cover relative to the upper end of the first side plate.

In this scheme, the lateral wall of outer fire lid is farther away from to the lower extreme of first curb plate for the upper end of first curb plate to reduce the area of the part that is close to the combustor on the first curb plate relatively, and then make the rate of rise of first curb plate slower, so that the rate of rise of temperature of heat shield body is lower.

Preferably, the first heat insulation layer is provided with a downward concave annular groove, the top of the annular groove far away from the side wall of the combustor is higher than the top of the outer fire cover, and the top of the annular groove close to the side wall of the combustor is lower than the top of the outer fire cover; the opening width of the top of the annular groove is larger than the width of the bottom of the annular groove, and the shape of the cross section of the second heat insulation layer corresponds to the shape of the first heat insulation layer.

Preferably, the panels include a first panel and a second panel, the second panel being located in the middle of the first panel, the first panel being joined to the second panel;

and the second panel is fixedly connected with the first panel, or the second panel is fixedly connected with the base of the combustor.

Preferably, a recessed portion is formed in the bottom of the second side plate of the heat shield body, a protruding portion is formed on the second panel, and the recessed portion and the protruding portion are in concave-convex fit to limit rotation of the heat shield body.

In this scheme, adopt above-mentioned structural style, the restriction separates the heat exchanger body and rotates relative to the combustor.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows: according to the heat shield of the stove, the first channel and the second channel are arranged, so that air outside the heat shield body flows to the outer side of the outer fire cover and the outer side of the inner fire cover through the first channel and the second channel respectively, more secondary air is provided for combustion of the inner fire cover and the outer fire cover, and further the combustion efficiency of the combustor is improved.

Drawings

FIG. 1 is a schematic structural view of the heat shield of the cooking range according to the preferred embodiment of the present invention just after being sleeved outside the burner and not abutting against the panel.

FIG. 2 is a cross-sectional view of the assembled heat shield and burner and face plate of a cooktop in accordance with a preferred embodiment of the present invention.

Fig. 3 is a schematic perspective view of a heat shield of a cooking appliance according to a preferred embodiment of the present invention.

Fig. 4 is a schematic perspective view of a heat shield of a cooking appliance according to a preferred embodiment of the present invention.

Description of reference numerals:

heat shield body 10

First insulating layer 101

Annular recess 1011

Guide 1012

First side plate 1013

Secondary insulating layer 102

Air guide sleeve 103

First air outlet 1031

Second air outlet 1032

Second side plate 104

Air intake 1041

Limiting groove 1042

First channel 105

Second channel 106

First insulating cavity 107

Second insulating cavity 108

Stopper 109

Panel 20

First panel 201

Second panel 202

Limit bump 2021

Burner 30

Base 301 of outer fire cover

Combustor passage 302

Combustor passage inlet 303

Outer fire cover 304

Inner fire cover 305

Pot support 40

Stent body 401

Air inlet 4011

Support 402

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 4, the present embodiment provides a cooktop heat shield including a heat shield body 10, the heat shield body 10 being annular as a whole. The heat shield body 10 is sleeved outside the combustor 30, and the heat shield body 10 and the combustor 30 are arranged at intervals, so that the heat shield can be prevented from contacting the combustor 30, and heat generated by the combustor 30 is prevented from directly acting on the heat shield. The bottom of the heat shield body 10 is detachably attached to the panel 20, and the heat shield body 10 includes a first passage 105 and a second passage 106, the first passage 105 leading to the outside of the outer fire lid 304 through a gap between the heat shield body 10 and the outer fire lid 304, and the second passage 106 leading to the burner passage 302 through the burner passage inlet 303 and leading to a gap between the outer fire lid 304 and the inner fire lid 305. Wherein, through setting up first passageway 105 and second passageway 106 for the outside air of heat exchanger body 10 flows to the outside of outer burner cap 304 and the outside of interior burner cap 305 through first passageway 105 and second passageway 106 respectively, provides more secondary air for the burning of interior burner cap 305 and outer burner cap 304, and then improves the combustion efficiency of combustor 30.

The heat shield body 10 comprises a first insulating layer 101 and a second insulating layer 102 arranged at a distance from each other from top to bottom, the second insulating layer 102 being arranged at a distance from the panel 20. The heat shield body 10 further includes an annular first side plate 1013 and a cylindrical second side plate 104, a top end of the first side plate 1013 is connected to an inner circumferential surface of the first heat insulating layer 101, and the first heat insulating layer 101, the first side plate 1013, and the second heat insulating layer 102 enclose a first heat insulating cavity 107. The top of the second side plate 104 is connected to the outer peripheral surface of the second insulation layer 102, the bottom of the second side plate 104 abuts against the face plate 20, and the second insulation layer 102, the second side plate 104 and the face plate 20 enclose a second insulation cavity 108. The first heat insulation layer 101 and the second heat insulation layer which are arranged at intervals are arranged on the heat insulation cover body 10 to form the first heat insulation cavity 107 and the second heat insulation cavity 108, so that heat on the first side plate 1013 is conducted into the first heat insulation cavity 107 and the second heat insulation cavity 108 through heat, the heat conduction rate of the heat insulation cover is reduced, and the panel 20 is prevented from being heated too fast to cause overhigh temperature, and a user is prevented from being scalded. And the secondary air flowing to the outer fire cover 304 and the inner fire cover 305 is preheated by the arrangement of the first insulating cavity 107 and the second insulating cavity 108, thereby improving the combustion efficiency of the burner 30.

The first side plate 1013 is spaced apart from the inner side of the second insulating layer 102 so that the first insulating cavity 107 communicates with the second insulating cavity 108, and the first side plate 1013 is close to the outer fire cover 304. The first side plate 1013 and the second side plate 104 are spaced apart such that the secondary air in the first insulating cavity 107 can flow into the second insulating cavity 108 through the gap between the first side plate 1013 and the second insulating layer 102, so that the secondary air in the second insulating cavity 108 is supplemented to a greater extent to improve the combustion efficiency of the combustor 30. The stove heat shield further comprises a cylindrical air guide sleeve 103, the top end of the air guide sleeve 103 is connected to the bottom end of the first side plate 1013, and the bottom end of the air guide sleeve 103 abuts against the bottom of the base 301 of the outer fire cover.

The air guide sleeve 103 is provided to guide the secondary air in the first and second heat insulation cavities 107 and 108, so that the secondary air in the first and

second passages

105 and 106 can uniformly flow to the outer fire cover 304 and the inner fire cover 305. The bottom of the air guide sleeve 103 is abutted against the bottom of the base 301 of the outer fire cover to ensure that the secondary air in the first heat insulation cavity 107 and the second heat insulation cavity 108 does not flow to the periphery of the combustor 30 through other positions of the heat insulation cover body 10; meanwhile, the space in the heat shield body 10 is relatively sealed, so that the temperature in the first heat insulation cavity 107 and the second heat insulation cavity 108 is higher, the preheating effect on secondary air is better, and the combustion efficiency of the combustor 30 is improved.

In this embodiment, the second side plate 104 is provided with a plurality of air inlets 1041 at intervals along the circumferential direction, the air guide sleeve 103 is provided with a plurality of air outlets at intervals along the circumferential direction, and the air inlets 1041 and the air outlets are both communicated with the second insulating cavity 108. By providing the air inlets 1041 on the second side plate 104, the external air flows into the second insulating cavity 108 through the air inlets 1041, and then flows to the outer sides of the outer fire cover 304 and the inner fire cover 305 through the air outlets respectively to provide sufficient secondary air for the combustion of the gas in the burner 30, thereby improving the combustion efficiency of the burner 30.

Further, the air outlet includes a plurality of first air outlets 1031, and the first air outlets 1031 are located at the upper end of the air guide sleeve 103; the first passage 105 may be formed by the air inlet 1041, the first thermal insulation cavity 107 and the first air outlet 1031, in which case the air inlet 1041 corresponds to the outer side wall of the first thermal insulation cavity 107; the first passage 105 may also be formed by the air inlet 1041, the second thermal insulation cavity 108 and the first air outlet 1031, in which case the air inlet 1041 is disposed on the outer side wall of the first thermal cavity; meanwhile, the first passage 105 may also be formed by an air inlet 1041, a first insulating cavity 107, a second insulating cavity 108 and a first air outlet 1031, and at this time, the air inlet 1041 is disposed on the corresponding outer side wall of the first insulating cavity 107 and the second insulating cavity 108. In the present embodiment, the last structure form is adopted. Since the secondary air is preheated to flow upward more easily and the upper end of the dome 103 is closer to the main fire hole (the main fire hole is not shown in the drawing) of the outer fire cover 304, the first passage 105 thus formed has a shorter stroke, which facilitates the secondary air to flow toward the outer fire cover 304 through the first passage 105, thereby improving the combustion efficiency of the burner 30.

Meanwhile, the air outlet also comprises a plurality of second air outlets 1032, and the second air outlets 1032 are positioned at the lower end of the air guide sleeve 103; the second channel 106 is formed by the air inlet 1041, the first insulating cavity 107 or the second insulating cavity 108 and the second air outlet 1032. Since the burner tunnel 302 is located at the bottom of the burner 30 and above the panel 20, the second air outlet 1032 is provided at the bottom of the air guide sleeve 103, so that the stroke of the second tunnel 106 is minimized, and the secondary air is more easily flowed to the outside of the inner fire cover 305, thereby improving the combustion efficiency of the burner 30.

It should be noted that each second outlet 1032 may correspond to one, or may correspond to a plurality of burner channels 302. Each second air outlet 1032 corresponds to one burner channel 302, so that secondary air flows into each burner channel 302, secondary air flowing to the outer fire cover 304 is more uniform, and the combustion efficiency of the burner 30 can be further improved. And second gas outlet 1032 corresponds to a plurality of combustor channels 302, has the advantages of simple structure and convenient processing.

In this embodiment, the opening area of the intake ports 1041 is larger than the opening area of the outlet ports. The opening area of the air inlet 1041 is larger than that of the air outlet, so that the air resistance entering the second insulating cavity 108 and the first insulating cavity 107 is smaller, and further, the air can enter the second insulating cavity 108 and the first insulating cavity 107 more easily; the resistance of the air flowing out from the air outlet is relatively large, so that the air in the first heat insulation cavity 107 and the second heat insulation cavity 108 can be fully preheated and then flows out from the air outlet, and further the combustion efficiency of the combustor 30 is improved.

In this embodiment, the heat shield of the middle range further includes a plurality of limiting members 109, the limiting members 109 are fixed to the side surface of the first side plate 1013 at intervals, and the limiting members 109 extend toward the outer fire cover 304. Through setting up locating part 109, the restriction separates the ascending degree of freedom of heat exchanger in the horizontal direction, because locating part 109 and combustor 30 contactless, and then makes the heat on the combustor 30 only can pass through on the heat-conduction spreads the heat exchanger, and then has reduced the heat transmission rate of first curb plate to the high temperature that leads to panel 20 of the outer lane of preventing to separate the heat exchanger is too high in temperature.

The limiting member 109 is a flat limiting plate, and the inclination direction of the limiting plate facing the end face of the outer fire cover 304 is the same as the inclination direction of the outer wall of the outer fire cover 304. With this configuration, the stopper 109 is capable of limiting the heat shield, and at the same time, when the heat shield is assembled, the stopper 109 does not interfere with the burner 30 to affect the assembly.

In this embodiment, the heat shield of the cooking range further includes a guiding element 1012, the guiding element 1012 is connected to the top surface of the first heat insulating layer 101, the guiding element 1012 surrounds the outer side of the outer fire cover 304, the guiding element 1012 includes a guiding surface, the guiding surface is spaced apart from the outer fire cover 304, and the upper end of the guiding surface is farther away from the outer fire cover 304 relative to the lower end of the guiding surface. Set up guide 1012 and be used for playing the guide effect to the secondary air for the secondary air upwards flows in the clearance between the outer wall of combustor 30 and the first curb plate, makes the secondary air of upflow continuously supply along the direction of flame through guide 1012, and then makes the secondary air by make full use of, strengthens the flame intensity of combustor 30, and then promotes combustor 30's combustion efficiency.

The guide member 1012 is an annular boss, the top of the boss is lower than the center of the main fire hole on the outer fire cover 304, and the side of the boss close to the outer fire cover 304 is a guide surface. The bosses guide the secondary air flowing upward, so that the secondary air flows toward the burner 30, thereby improving the efficiency of the burner 30. The height of the top of the boss is lower than the height of the center of the main fire hole, preventing flame from acting on the boss and thereby reducing the efficiency of the burner 30, and also preventing the temperature of the boss from rising too fast, which in turn results in heat being transmitted from the outer layer of the heat shield to the panel 20 and causing the panel 20 to rise too fast.

The height difference between the top of the boss and the main fire hole is 0.5-3 mm. By adopting the structure, the guide effect of the boss on secondary air is ensured under the condition of preventing the temperature rise of the heat shield from being too fast, and the efficiency of the combustor 30 is further improved. The inclination angle of the main fire hole is between 35 and 50 degrees, and the inclination angle of the guide surface is between 40 and 60 degrees. The secondary air flowing upward through the gap between the burner 30 and the first side plate is guided by the slope so that the secondary air is continuously supplemented in the direction of the flame, thereby improving the combustion efficiency of the burner 30. The distance between the centerline of the top surface of the boss and the outer wall of the outer fire cover 304 is between 12-18 mm. Under the circumstances of guaranteeing the good guide effect of boss to secondary air, avoid the boss to lead to the temperature rise of boss too fast near combustor 30 to prevent to separate the outer heat dissipation of heat exchanger too fast, in order to avoid panel 20 temperature rise too fast.

The lower end of the first side plate 1013 is farther from the side wall of the outer fire cover 304 than the upper end of the first side plate 1013. The lower end of the first side plate 1013 is farther away from the side wall of the outer fire cover 304 than the upper end of the first side plate 1013, so as to reduce the area of the portion of the first side plate 1013 relatively close to the burner 30, and further to make the temperature rising rate of the first side plate 1013 slower, so as to make the temperature rising rate of the heat shield body 10 lower.

Be connected with pot support 40 on heat exchanger body 10, pot support 40 includes interconnect's support body 401 and a plurality of support 402, and support body 401 detachably connects on the outward flange of first insulating layer 101, and support body 401 is provided with the air inlet 4011 of a plurality of intervals settings, and air inlet 4011 is linked together with first thermal-insulated cavity 107 and outside, and the one end and the second thermal-insulated cavity 108 intercommunication of first thermal-insulated cavity 107 orientation combustor 30. The second insulating cavity 108 is continuously ventilated with air to realize the insulating effect; adopt above-mentioned structure still to have the heat that prevents on the pot support 40 to transmit to on the heat shield fast, and then prevent to separate the too fast panel 20 temperature rise that leads to of heat shield temperature rise too fast.

The first heat insulation layer is provided with a downward-concave annular groove 1011, the top of the annular groove 1011, which is far away from the side wall of the burner, is higher than the top of the outer fire cover, and the top of the annular groove 1011, which is close to the side wall of the burner, is lower than the top of the outer fire cover; the top of the annular groove 1011 has an opening width greater than the width of the bottom of the annular groove 1011 and the cross-sectional shape of the second insulating layer corresponds to the shape of the first insulating layer. In this embodiment, the first insulating layer 101 is a non-planar surface having an annular groove 1011, and the top end of the side wall of the annular groove 1011 is inclined to the outside of the groove. The annular groove 1011 is arranged for containing soup overflowing from the cooker, so that the heat shield can be cleaned conveniently. Since the pan support 40 is mounted on the outer edge of the first insulating layer 101, in this embodiment, the outer edge of the first insulating layer 101 is the top of the side wall of the annular groove 1011 on the side away from the burner 30. The top of the annular groove away from the side wall of the burner is higher than the top of the outer fire cover in order to have a proper distance between the bottom of the pot placed on the pot support 40 and the burner 30, thereby maximizing the utilization rate of the flame in the burner 30.

The panel 20 comprises a first panel 201 and a second panel 202, the second panel 202 is located in the middle of the first panel 201, and the first panel 201 is connected with the second panel 202; the second panel 202 is fixedly connected with the first panel 201, and the second panel 202 is fixedly connected with the base of the burner 30.

The bottom of the second side plate 104 of the heat shield body 10 is provided with a recessed portion, and the second panel 202 is provided with a protruding portion, and the recessed portion and the protruding portion are in concave-convex fit to limit the rotation of the heat shield body 10. With the above configuration, the heat shield body 10 is restricted from rotating relative to the combustor 30. The number and structure of the concave portions and the convex portions are not limited, in this embodiment, two limiting grooves 1042 are disposed at the bottom of the second side plate 104, a limiting protrusion 2021 is disposed on the second panel 202, and the number and shape of the limiting grooves 1042 and the limiting protrusion 2021 are matched, so that the limiting protrusion 2021 can be matched with the limiting grooves 1042, and the heat shield and the second panel 202 are fixed to limit the degree of freedom in the vertical direction of the heat shield. Wherein, the length direction of the limiting protrusion 2021 and the limiting groove 1042 is along the radial direction of the first panel 201. In this embodiment, a flange is disposed at the bottom of the second side plate 104, the outer edge of the second panel 202 is an inclined plane with a radian, and the flange of the second side plate 104 is matched with the inclined plane of the second panel 202, so as to improve the positioning accuracy, thereby ensuring that the height and the angle of the heat shield are matched with those of the burner 30.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a cooking utensils separate heat exchanger, its is including separating the heat exchanger body, separate the outside that combustor was located to heat exchanger body cover, the bottom detachably who separates the heat exchanger body connects in the panel, its characterized in that, separate the heat exchanger body and include first passageway and second passageway, the first passageway warp separate clearance between heat exchanger body and the outer fire lid and lead to the outside of outer fire lid, the second passageway leads to through the combustor passageway space between outer fire lid and the interior fire lid.

2. The cooktop heat shield of claim 1,

the heat shield body comprises a first heat insulation layer and a second heat insulation layer which are arranged from top to bottom at intervals, and the second heat insulation layer and the panel are arranged at intervals;

3. The cooktop heat shield of claim 2, wherein the second side plate is provided with a plurality of air inlets at intervals along the circumferential direction, the air deflector is provided with a plurality of air outlets at intervals along the circumferential direction, and the air inlets and the air outlets are communicated with the second heat insulation cavity.

4. The cooktop heat shield of claim 3, wherein the air outlet comprises a first plurality of air outlets located at an upper end of the air guide sleeve;

5. The cooktop heat shield of claim 3, wherein the air outlet further comprises a second plurality of air outlets at a lower end of the air guide sleeve;

6. The cooktop heat shield of claim 5, wherein each of the second air outlets corresponds to one or more of the burner channels.

7. The cooktop heat shield of claim 3, wherein the open area of the air inlet is greater than the open area of the air outlet.

8. The cooktop heat shield of claim 2, further comprising a plurality of retaining members, wherein the retaining members are fixedly attached to the side surface of the first side plate at intervals, and the retaining members extend in a direction toward the outer burner cap.

9. The cooktop heat shield of claim 8, wherein the stopper is a flat stopper, and an inclination direction of the stopper toward the end surface of the outer fire cover is identical to an inclination direction of the outer wall of the outer fire cover.

10. The cooktop heat shield of claim 2, further comprising a guide connected to a top surface of the first insulating layer, the guide surrounding an outer side of the outer fire lid, the guide comprising a guide surface spaced apart from the outer fire lid, an upper end of the guide surface being further from the outer fire lid relative to a lower end of the guide surface.

11. The cooktop heat shield of claim 10, wherein the guide is an annular boss, the top of the boss is lower than the center of the main fire hole in the outer fire cover, and the side of the boss near the outer fire cover is the guide surface.

12. The cooktop heat shield of claim 11, wherein a difference in height between a top of the boss and the main fire hole is between 0.5-3 mm.

13. The cooktop heat shield of claim 11, wherein the angle of inclination of the primary fire holes is between 35 ° and 50 ° and the angle of inclination of the guide surface is between 40 ° and 60 °.

14. The cooktop heat shield of claim 11, wherein a distance between a centerline of a top surface of the boss and an outer wall of the outer fire lid is between 12-18 mm.

15. The cooktop heat shield of claim 2, wherein a lower end of the first side plate is further from the side wall of the outer fire cap relative to an upper end of the first side plate.

16. The cooktop heat shield of claim 2, wherein the first insulating layer has a downwardly concave annular groove thereon, wherein a top of the annular groove away from the side wall of the burner is higher than a top of the outer fire cover, and wherein a top of the annular groove close to the side wall of the burner is lower than the top of the outer fire cover; the opening width of the top of the annular groove is larger than the width of the bottom of the annular groove, and the shape of the cross section of the second heat insulation layer corresponds to the shape of the first heat insulation layer.

17. The cooktop heat shield of any of claims 1-16, wherein the panel comprises a first panel and a second panel, the second panel positioned in a middle portion of the first panel, the first panel joined to the second panel;

18. The cooktop heat shield of claim 17, wherein a recess is disposed at a bottom of the second side plate of the heat shield body, and wherein a protrusion is disposed on the second panel, the recess and the protrusion engaging in a concave-convex manner to limit rotation of the heat shield body.