CN202604596U

CN202604596U - Heating device

Info

Publication number: CN202604596U
Application number: CN 201220166294
Authority: CN
Inventors: 邢凤雷
Original assignee: Midea Group
Current assignee: Midea Group Co Ltd
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2012-12-19
Anticipated expiration: 2022-04-19

Abstract

The utility model relates to a heating device, including heat transfer body and heating tube, the heating tube is fixed in the bottom of heat transfer body, and the vertical projection district of heating tube on the heat transfer body is Z, and its characterized in that is in the thickness that lies in projection district Z position on the heat transfer body is thickest, keeps away from the thickness attenuation gradually of projection district Z on the heat transfer body. The utility model discloses heat transfer is even, has improved food culinary art effect, and is with low costs.

Description

A kind of heater

Technical field

The utility model relates to a kind of heater.

Background technology

At present, the various electrical household appliances of selling on the market, as fry in shallow oil roasting machine and electric cooker etc., and heat-generating pipe is fixed on the bottom position of heat-generating disc or baking tray mostly, and heat-generating disc or baking tray carry out heating cooking to food.Like Fig. 1, shown in Figure 2; Heat-generating pipe 5 is fixed on the structural representation of baking tray 6; Heat-generating pipe 5 has heat-generating pipe projected area Z on thermal conductor 6, the whole thickness of baking tray 6 is roughly the same, transmits high near the heat transmission in the zone of heat-generating pipe projected area than the heat away from the zone of heat-generating pipe projected area.Like several points representative on the baking tray 6: the inboard point of baking tray central point 1, heat-generating pipe 2, heat-generating pipe points outside 3 and baking tray marginal point 4; These four somes thickness of corresponding baking tray respectively are h1, h2, h3, h4; Beeline with the heat-generating pipe projected area is l1, l2, l3, l4 respectively, and inboard point 2 of heat-generating pipe and heat-generating pipe points outside 3 are identical and nearest with the distance of heat-generating pipe projected area, and baking tray marginal point 4 is far away with the distance of heat-generating pipe projected area; The furthest of baking tray central point 1 and heat-generating pipe projected area; L1＞l4＞l2=l3, but baking tray thickness h 1, h2, h3, the h4 of these four points are basic identical, cause heater in the heating process, to produce heat and transmit inhomogeneous; The heat transmission of inboard point 2 of heat-generating pipe and heat-generating pipe points outside 3 is the highest; The heat transmission of baking tray marginal point 4 is taken second place, and the heat of baking tray central point 1 is transmitted minimum, so the temperature contrast between baking tray central point 1, heat-generating pipe inboard point 2, heat-generating pipe points outside 3 and the baking tray marginal point 4 is very big; The situation that food portion burns or part is not yet done takes place during cooking food easily, influence culinary art effect.

According to hot propagation formula: Q=λ * (T1-T2) * t*A/ δ, wherein λ is the thermal conductivity factor of conductive medium; δ is the length of conductive medium; T1, T2 are the temperature of each point; T is a conduction time; A is a contact area, i.e. the cross-sectional area of conductive medium.Under the same conditions, cross-sectional area is directly proportional with the heat of transmission.If increase the cross-sectional area that conducts heat, be the bottom design of baking tray identical thickness and thickening significantly promptly, the heat transmission that can improve baking tray.But also can roll up cost simultaneously.

Summary of the invention

The purpose of the utility model be overcome the deficiency of prior art and provide a kind of heat transfer evenly, heater cheaply.

The technical scheme of the utility model is: a kind of heater; Comprise thermal conductor and heat-generating pipe; Said heat-generating pipe is fixed in the bottom of thermal conductor; The upright projection district of heat-generating pipe on thermal conductor is Z, and the thickness that it is characterized in that on said thermal conductor, being positioned at projected area Z position is the thickest, on thermal conductor away from the thickness attenuation gradually of projected area Z.

Said thermal conductor is baking tray or heat-generating disc.

The utility model advantage compared with prior art is: the expansion of following the distance of this point and heat-generating pipe owing to the section thickness of each point on the thermal conductor reduces; It is good more to make the closer to the heat conducting effect of the point of heat-generating pipe; Help the whole heat conduction of heat-generating pipe evenly; And cost is low, has improved the food cooking effect.

Description of drawings

Fig. 1 is the front view of the baking tray of prior art;

Fig. 2 is the A-A profile of Fig. 2;

Fig. 3 is the front view of the utility model embodiment 1;

Fig. 4 is the B-B profile of Fig. 3.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Like Fig. 3, shown in 4; A kind of heater; Comprise thermal conductor 6 and heat-generating pipe 5, said heat-generating pipe 5 is fixed in the bottom of thermal conductor 6, and the upright projection district of heat-generating pipe 5 on thermal conductor 6 is Z; The utility model characteristics are that on said thermal conductor 6, to be positioned at the thickness at projected area Z position the thickest, on thermal conductor 6 away from the thickness attenuation gradually of projected area Z.For example, sampled point 1, sampled point 2, sampled point 3 and sampled point 4 are arranged on thermal conductor 6, sampled point 1 and sampled point 2 all are positioned at the inboard of projected area Z; Sampled point 1 is L1 with the air line distance of the inside edge of projected area Z, and sampled point 2 is L2 with the air line distance of projected area Z inside edge, and the cross-sectional height of sampled point 1 place's thermal conductor 6 is H1; The cross-sectional height of sampled point 2 place's thermal conductors 6 is H2; As L1>during L2, H1 H2, this helps the heat conduction; Sampled point 3 and sampled point 4 are positioned at the outside of projected area Z, and more near the outer ledge of projected area Z, the thickness of sampled point 3 is than the thicker of sampled point 4 than sampled point 4 for sampled point 3.Thermal conductor 6 employed materials are fewer like this, and on the thermal conductor 6 temperature evenly, effectively improve the culinary art effect of food.

In the present embodiment, said thermal conductor 6 is baking tray or heat-generating disc.

During work since on thermal conductor 6 near the thicker of the near more point of heat-generating pipe 5, away from the thinner thickness of the bottom of the thermal conductor 6 of heat-generating pipe 5, this helps the heat conduction.

In every case to realize that through section thickness heat conducting structure all belongs to the protection domain of this patent with the bottom that changes thermal conductor 6.

Claims

1. heater; Comprise thermal conductor (6) and heat-generating pipe (5); Said heat-generating pipe (5) is fixed in the bottom of thermal conductor (6); The upright projection district of heat-generating pipe (5) on thermal conductor (6) is Z, and the thickness that it is characterized in that on said thermal conductor (6), being positioned at projected area Z position is the thickest, goes up the thickness attenuation gradually away from projected area Z at thermal conductor (6).

2. a kind of heater according to claim 1 is characterized in that said thermal conductor (6) is baking tray or heat-generating disc.