CN219083192U - Heat shield for kitchen range - Google Patents

Abstract

The utility model relates to a heat shield for a kitchen range, which comprises a shield body enclosing a central hole, and is characterized in that: the cover body comprises an upper cover and a middle cover which are mutually matched, a first cavity is formed between the upper cover and the middle cover, a lower cover with a second cavity is formed between the upper cover and the middle cover, an annular seam which is circumferentially arranged at the juncture of the inner periphery of the lower cover and is communicated with the second cavity and the outside is formed, and at least three supporting feet are circumferentially arranged on the lower cover, so that the cover has the advantages of being compared with the prior art: the upper cover and the middle cover form a first cavity, the heat transfer quantity of the upper cover to each supporting leg can be reduced, a second cavity which independently reduces the heat transfer to each supporting leg is formed between the middle cover and the lower cover, the second cavity can effectively recycle the heat of flue gas to heat the pot and secondary air flowing in the attached lower cover, and in addition, the contact area between the middle cover and the lower cover can be reduced due to the arrangement of the annular seam, and the contact heat transfer loss is reduced.

Description

Heat shield for kitchen range

Technical Field

The utility model relates to the technical field of household kitchen ware, in particular to a heat shield for a 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 can escape into the surrounding environment besides being used for heating the cooker, and energy waste is caused; in order to solve the above problems, some heat collecting and energy accumulating structures have appeared in recent years, such as ZL201721665655.6 (publication No. CN 209026878U) filed by the applicant, which discloses a heat shield for a kitchen range and a kitchen range using the heat shield for a kitchen range, which discloses an annular shield body, wherein the cross section of the inner side wall of the periphery of the top of the shield body is S-shaped at the position adjacent to the top, the cross section of the inner side wall of the periphery of the top of the heat shield for a kitchen range is S-shaped, the inner concave portion of the S-shaped increases the residence time of the internal flue gas at the place, when the flue gas passes through the outer convex portion of the S-shaped, the flowing direction of the flue gas can be limited to be basically perpendicular to the bottom of the kitchen range, the contact area between the flue gas and the bottom of the kitchen range is increased, the contact time between the flue gas and the bottom of the kitchen range is increased, the heat exchange amount between the flue gas and the bottom of the kitchen range is increased to the greatest extent, and the heat efficiency of the heat shield is improved, but the heat shield is a single-layer shield, and is deficient in heat insulating effect and needs further improvement.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present utility model is to provide a heat shield for a kitchen range, which can reduce downward heat conduction loss or recycle the heat loss.

In order to solve the technical problems, the utility model adopts the following technical scheme: the heat shield for the kitchen comprises a shield body enclosing a central hole, and is characterized in that: the cover body includes upper cover and middle level cover that involutes each other to upper cover and middle level cover between be formed with first cavity, still including being located lower floor cover under the middle level cover, be formed with the second cavity between lower floor cover and the middle level cover, the juncture of lower floor cover inner periphery has the annular seam along circumference for the intercommunication second cavity and external world, lower floor cover is equipped with three stabilizer blades at least along circumference.

As a further improvement, each supporting leg comprises a supporting leg body exposed out of the lower cover and a connecting leg extending into the second cavity and the first cavity, the connecting leg comprises a first connecting leg extending into the second cavity and a second connecting leg continuously extending into the first cavity from the center of the first connecting leg, and an abutting step abutting against the middle cover is formed between the second connecting leg and the first connecting leg. Because the arrangement of the connecting feet ensures that each supporting foot has the function of supporting the middle layer cover besides the function of supporting the cover body, in addition, when the cover body is assembled, the parts can be reduced by directly connecting the first connecting feet and the second connecting feet of the connecting feet through the lower layer cover and the middle layer cover in sequence and then by welding.

Further, the lower cover comprises a supporting section for connecting the middle cover, a bending section bent inwards from the lower end of the supporting section along the radial direction, a straight section continuously extending inwards from the bending section, and an extending section extending upwards from the straight section and forming the annular seam with the inner periphery of the middle cover. The bending section can bend relative to secondary air to generate vortex so as to perform better heat exchange with the lower cover.

Further, the middle layer cover comprises a first section part corresponding to the extension section of the lower layer cover, a second section part corresponding to the straight section of the lower layer cover and a third section part corresponding to the bending section of the lower layer cover, and the middle layer cover is divided into three parts from inside to outside according to the change of the cross section: the first section part and the lower cover form a contraction part with a downward horn mouth, the second section part and the straight section form a straight part, and the third section part and the bending section form a diffusion part with an outward horn mouth. The junction of the inner periphery of the middle layer cover and the lower layer cover is provided with an annular seam which is communicated with the second cavity and the outside, and the second cavity is an independent heat insulation cavity for the support leg so as to reduce the conduction of heat generated in the cooking process to the support leg, thereby reducing the downward heat conduction loss, and reducing the contact area between the middle layer cover and the lower layer cover and the contact heat transfer loss due to the arrangement of the annular seam; in addition, the formation of constriction mainly lies in increasing the suction force of second cavity to the flue gas, and the formation of straight portion and diffusion portion lies in can also recycle the heat of flue gas when weakening flue gas overflow speed to make secondary air and lower floor's cover have better heat exchange.

In order to avoid that spills enter the annular slit, the inner periphery of the upper cover is preferably turned downwards to form an inner turned edge, which can at least partly block the annular slit.

Further, the first cavity is filled with air, heat insulating material or vacuumized. The heat insulating material, such as ceramic fiber, is one excellent heat insulating material, and has excellent heat insulating effect on heat collecting cavity to prevent heat loss.

Compared with the prior art, the utility model has the advantages that: the upper cover and the middle cover form a first cavity, the heat transfer quantity of the upper cover to each supporting leg can be reduced, namely, the heat transfer from each supporting leg to the cooker panel is reduced, a second cavity which independently reduces the heat transfer to each supporting leg is formed between the middle cover and the lower cover, the second cavity can effectively recycle the heat of flue gas to heat the pot and secondary air which flows in by the lower cover, and in addition, the contact area between the middle cover and the lower cover can be reduced due to the arrangement of the annular seam, and the contact heat transfer loss is reduced.

Drawings

FIG. 1 is a schematic view of a heat shield according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a thermal shield according to an embodiment of the utility model;

FIG. 3 is a schematic view of a leg structure according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the lower cover in an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a middle layer cover in an embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, the heat shield for a kitchen range in this embodiment comprises a shield body 1 surrounded with a central hole 10, the shield body 1 comprises an upper shield 11 and a middle shield 12 which are mutually combined, a first cavity 14 is formed between the upper shield 11 and the middle shield 12, the first cavity 14 is 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 heat insulating and preserving role on a heat collecting cavity to prevent heat loss, the air is the most economical and common heat insulating material, the heat transfer of the shield body 1 outwards can be reduced by utilizing the good heat insulating and insulating property of the heat insulating material, the shield body 1 further comprises a lower shield 13 positioned below the middle shield 12, a second cavity 15 is formed between the lower shield 13 and the middle shield 12, the junction of the inner periphery of the lower shield 13 is provided with an annular seam 16 which is used for communicating the second cavity 15 with the outside in the circumferential direction, and the lower shield 13 is also provided with at least three support legs 2 in the circumferential direction. The upper cover 11 and the middle cover 12 form the first cavity 14, which can reduce the heat transfer quantity of the upper cover 11 to each supporting leg 2, namely, reduce the heat transfer from each supporting leg 2 to the kitchen range panel, and the middle cover 12 and the lower cover 13 form the second cavity 15 which independently reduces the heat transfer to each supporting leg 2, and the second cavity 15 can effectively recycle the heat of the flue gas to heat the pot and the secondary air which is attached to the lower cover 13, in addition, the contact area between the middle cover and the lower cover can be reduced due to the arrangement of the annular seam 16, and the contact heat transfer loss is reduced.

Specifically, each leg 2 includes a leg body 21 exposed outside the lower cover 13 and a connecting leg 22 extending into the second cavity 15 and the first cavity 14, the connecting leg 22 includes a first connecting leg 221 extending into the second cavity 15 and a second connecting leg 222 extending from the center of the first connecting leg 221 to the first cavity 14, and an abutment step 223 abutting against the middle cover 12 is formed between the second connecting leg 222 and the first connecting leg 221. The arrangement of the connecting pins 22 makes each support leg 2 have the function of supporting the middle layer cover 12 in addition to the function of supporting the cover body 1, in addition, when the cover body 1 is assembled, the middle layer cover 12 can be abutted against the abutting step 223 and connected in a welding mode after the first connecting pin 221 and the second connecting pin 222 of the connecting pin 22 sequentially pass through the lower layer cover 13 and the middle layer cover 12, so that parts during the assembly of the cover body 1 are reduced.

In addition, the lower cover 13 of the present embodiment includes, from the outside to the inside, a support section 131 for connecting the middle cover 12, a bent section 132 bent inward in the radial direction from the lower end of the support section 131, a straight section 133 extending continuously inward from the bent section 132, and an extension section 134 extending upward from the straight section 133 and forming an annular slit 16 with the inner periphery of the middle cover 12. The bend also turns at the bend relative to the secondary air to generate turbulence for better heat exchange with the lower shroud 13. Correspondingly, the middle layer cover 12 comprises a first section 121 corresponding to the extension section 134 of the lower layer cover 13, a second section 122 corresponding to the flat section 133 of the lower layer cover 13, and a third section 123 corresponding to the bending section 132 of the lower layer cover 13, which are divided into three parts from inside to outside according to the change of the cross section: the first section 121 forms a flare-down constriction 20 with the lower shroud 13, the second section 122 forms a straight section 30 with the straight section 133, and the third section 123 forms a flare-out diffuser 40 with the bent section 132. The junction of the inner periphery of the middle layer cover 12 and the lower layer cover 13 is provided with the annular seam 16 which is communicated with the second cavity 15 and the outside, and the second cavity 15 is an independent heat insulation cavity for the support leg 2 so as to reduce the conduction of heat generated in the cooking process to the support leg 2, thereby reducing the downward heat conduction loss, and reducing the contact area between the middle layer cover 12 and the lower layer cover 13 and the contact heat conduction loss due to the arrangement of the annular seam 16; the contraction portion 20 is mainly formed to increase the suction force of the second cavity 15 to the flue gas, and the straight portion 30 and the diffusion portion 40 are formed to reduce the overflow speed of the flue gas and recycle the heat of the flue gas, so that the secondary air and the lower cover 13 can exchange heat better. Finally, in order to avoid that spills enter the annular slit 16, the inner periphery of the upper shell 11 is preferably turned downwards to form an inner flange 110, which inner flange 110 at least partially conceals the annular slit 16.

Claims (6)

1. A heat shield for a kitchen range, comprising a shield body (1) surrounded by a central hole (10), characterized in that: the cover body (1) comprises an upper cover (11) and a middle cover (12) which are mutually combined, a first cavity (14) is formed between the upper cover (11) and the middle cover (12), the cover body further comprises a lower cover (13) positioned under the middle cover (12), a second cavity (15) is formed between the lower cover and the middle cover, a circumferential annular seam (16) is formed at the juncture of the inner periphery of the lower cover (13) and is used for communicating the second cavity (15) with the outside, and at least three supporting legs (2) are arranged on the lower cover (13) along the circumferential direction.

2. The heat shield for a kitchen range according to claim 1, wherein: each supporting leg (2) comprises a supporting leg body (21) exposed out of the lower cover (13) and a connecting leg (22) extending into the second cavity (15) and the first cavity (14), the connecting leg (22) comprises a first connecting leg (221) extending into the second cavity (15) and a second connecting leg (222) continuously extending into the first cavity (14) from the center of the first connecting leg (221), and an abutting step (223) abutting against the middle cover (12) is formed between the second connecting leg (222) and the first connecting leg (221).

3. The heat shield for a kitchen range according to claim 2, wherein: the lower cover (13) comprises a supporting section (131) for connecting the middle cover (12), a bending section (132) bent inwards from the lower end of the supporting section (131) along the radial direction, a straight section (133) continuously extending inwards from the bending section (132), and an extending section (134) extending upwards from the straight section (133) and forming the annular seam (16) with the inner periphery of the middle cover (12).

4. A heat shield for a kitchen range according to claim 3, wherein: the middle layer cover (12) comprises a first section (121) corresponding to an extension section (134) of the lower layer cover (13), a second section (122) corresponding to a straight section (133) of the lower layer cover (13) and a third section (123) corresponding to a bending section (132) of the lower layer cover (13), and is divided into three parts from inside to outside according to the change of the cross section: the first section (121) and the lower cover (13) form a flare-down contraction part (20), the second section (122) and the straight section form a straight part (30), and the third section (123) and the bending section (132) form a flare-out diffusion part (40).

5. The heat shield for a kitchen range according to any one of claims 1 to 4, wherein: the inner periphery of the upper cover (11) is downwards turned to form an inner turned edge (110), and the inner turned edge (110) can at least partially shade the annular seam (16).

6. The heat shield for a kitchen range according to claim 5, wherein: the first cavity (14) is filled with air, a heat insulating material or vacuum.

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