CN212132644U

CN212132644U - Radiating fin, heating body and electric heater

Info

Publication number: CN212132644U
Application number: CN202020794359.1U
Authority: CN
Inventors: 陈红; 毕然; 赵树男; 陈小辉; 左双全
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-12-11
Anticipated expiration: 2030-05-13

Abstract

The utility model relates to a life electrical apparatus technical field, concretely relates to fin, heat-generating body and electric heater, the fin includes fin body (10), and fin body (10) have the oil duct, and fin body (10) still have a plurality of air chambers (12) that are located the oil duct outside, and the lower part of every air chamber (12) has air intake (121), and the upper portion of every air chamber (12) has air outlet (122). The technical scheme of the utility model every air chamber has independent air intake and air outlet, forms independent natural convection microcirculation, continuously discharges the absorptive heat of air, forms the heat dissipation source, improves the heat-sinking capability of fin.

Description

Radiating fin, heating body and electric heater

Technical Field

The utility model relates to a life electrical apparatus technical field, concretely relates to fin, heat-generating body and electric heater.

Background

At present, the electric oil heater is favored by consumers because of the advantages of clean heating process, no harmful gas generation, no noise and the like. Compared with the initial temperature of a heating environment, the temperature rise of the surface of the oil heater cannot exceed 85K, so that the burn accident of a user caused by local high temperature on the surface of the oil heater is avoided, the function is realized by a common temperature control element of the oil heater, and meanwhile, an air cavity is arranged at the edge of the radiating fin. Because the coefficient of thermal conductivity of air is far less than metal coefficient of thermal conductivity, the air cavity can completely cut off some heat of following the regional transmission of fin high temperature to the regional low temperature in edge, avoids fin edge surface temperature too high. Although the structure improves the use safety, the structure is not favorable for improving the heat dissipation efficiency of the electric oil heater and does not meet the requirements of energy conservation and high efficiency.

The cooling fin is provided with an oil way and an air cavity arranged at an interval with the oil way, the air cavity is provided with a top air outlet, an air inlet is arranged on each side wall in opposite side walls of the air cavity, an air deflector guiding air into the air cavity is arranged at each air inlet, and the arrangement of the air deflector is beneficial to reducing the temperature of the edge of the cooling fin. However, the air chamber only has a top air outlet, absorbed heat cannot be discharged in time, and the heat dissipation capacity of the heat dissipation fins is poor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a heat sink, a heat generating body and an electric heater, which can solve the problem of poor heat dissipation capability of the heat sink caused by the fact that the air chamber of the heat sink in the prior art only has a top gas outlet so that the absorbed heat of the air chamber can not be discharged in time.

In order to achieve the above object, the present invention provides a heat sink, including a heat sink body, the heat sink body has an oil passage, the heat sink body further has a plurality of air chambers located outside the oil passage, a lower portion of each air chamber has an air inlet, and an upper portion of each air chamber has an air outlet.

Further, the air cavity protrudes from at least one surface of the heat sink body.

Furthermore, the lower parts of the air cavity protruding out of the two surfaces of the radiating fin body are provided with air inlets, and the upper parts of the air cavity protruding out of the two surfaces of the radiating fin body are provided with air outlets.

Further, the air cavity is S-shaped or linear.

Further, when the air cavity is S-shaped, one wave crest of each air cavity is close to the oil duct, and the other wave crest of each air cavity is close to the edge of the radiating fin body.

Further, a plurality of air chambers surround the fin body for one circle, or the plurality of air chambers are located on the left and right sides of the oil passage.

Further, a plurality of air cavities form two sets of that the interior outer interval set up, and two sets of air cavities are interior air cavity group and outer air cavity group respectively, and a plurality of air cavities in the interior air cavity group encircle the a week of fin body, and a plurality of air cavities in the outer air cavity group are located the left side and the right side of oil duct.

Further, a plurality of air cavities in the inner air cavity group and a plurality of air cavities in the outer air cavity group which are positioned on the same side of the oil passage are distributed in a staggered mode.

Further, the lengths of the plurality of air chambers located on at least one of the left side and the right side of the oil passage are gradually reduced from top to bottom; and/or the distance between any two adjacent air chambers in the plurality of air chambers positioned on at least one side of the left side and the right side of the oil passage is gradually increased from top to bottom; and/or the radiating fin body comprises a left fin body and a right fin body, wherein a half of an air cavity and a half of an oil channel are formed on the left fin body and the right fin body respectively, the half of the air cavity is formed by stamping the part between two seams on the substrate, and the half of the oil channel is formed by stamping the substrate; and/or the cross-sectional shape of the air cavity is circular or elliptical or polygonal.

The utility model also provides a heat-generating body, include: a plurality of the radiating fins are arranged side by side; the heating rod is simultaneously arranged at the oil outlet position of each radiating fin in a penetrating mode.

The utility model also provides an electric heater, include: the heating body is as follows: the temperature control element is arranged on the heating body; and the indicator light is arranged on the heating body and is electrically connected with the temperature control element.

Further, the electric heater still includes auxiliary device, and auxiliary device sets up on the heat-generating body.

The utility model discloses technical scheme has following advantage: every air chamber has independent air intake and air outlet, the air absorbs its chamber wall's heat temperature rise in the air chamber, density is lighter, the up-moving of hot-air under the buoyancy lift effect, discharge from the air outlet on upper portion, the cold air of environment gets into the replenishment under the pressure difference effect from the air intake of lower part, form independent natural convection circulation, natural convection circulation is with the continuous discharge of air absorbing's in the air chamber heat, form stable heat dissipation source, the heat-sinking capability of fin has been improved, and then avoid the edge surface temperature of fin too high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic front view of a heat sink provided in a first embodiment of the present invention;

FIG. 2 shows a schematic perspective view of the air cavity of the heat sink of FIG. 1;

fig. 3 shows a schematic front view of a heat sink provided in a second embodiment of the present invention;

FIG. 4 shows a schematic perspective view of the air cavity of the heat sink of FIG. 3;

FIG. 5 shows a schematic cross-sectional view of the air chamber of FIG. 4;

fig. 6 shows a schematic front view of a heat sink provided in a third embodiment of the present invention;

fig. 7 shows a schematic front view of a heat sink provided in a fourth embodiment of the present invention;

fig. 8 shows a schematic cross-sectional view of an air cavity of a heat sink provided in a fifth embodiment of the present invention;

fig. 9 shows a schematic cross-sectional view of an air cavity of a heat sink provided in a sixth embodiment of the invention;

fig. 10 shows a schematic cross-sectional view of the air cavity of a heat sink provided in a seventh embodiment of the present invention.

Description of reference numerals:

10. a heat sink body; 12. an air chamber; 121. an air inlet; 122. and (7) air outlet.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1 and 2, the heat sink of the present embodiment includes a heat sink body 10, the heat sink body 10 has an oil passage, the heat sink body 10 further has a plurality of air chambers 12 located outside the oil passage, a lower portion of each air chamber 12 has an air inlet 121, and an upper portion of each air chamber 12 has an air outlet 122.

The cooling fin of this embodiment is used, each air cavity 12 has independent air inlet and air outlet, the temperature of the heat that air absorbs its chamber wall in the air cavity 12 rises, density is lighter, the hot-air up moves under the buoyancy power effect, discharge from the air outlet 122 on upper portion, the cold air of environment gets into the replenishment under the pressure difference effect, air inlet 121 from the lower part, form independent natural convection circulation, natural convection circulation is with the continuous discharge of the heat that air absorbs in the air cavity, form stable heat dissipation source, the heat-sinking capability of cooling fin has been improved, and then avoid the edge surface temperature of cooling fin too high.

In this embodiment, the air cavity 12 protrudes from two surfaces of the heat sink body 10, so as to increase the area of the air cavity, absorb more heat, and further improve the heat dissipation capability. As an alternative embodiment, the air cavities 12 are disposed to protrude from one surface of the heat sink body 10, in this case, a part of the air cavities 12 are disposed to protrude from the first surface of the heat sink body 10, and the other part of the air cavities 12 are disposed to protrude from the second surface of the heat sink body 10.

In the present embodiment, the lower portion of the air cavity 12 protruding out of the two surfaces of the heat sink body 10 has an air inlet 121, and the upper portion of the air cavity 12 protruding out of the two surfaces of the heat sink body 10 has an air outlet 122. Each air cavity has two air intakes and two air outlets, can continuously discharge the heat that air absorbs in the air cavity, improves heat-sinking capability effectively.

In this embodiment, the air chamber 12 is S-shaped. The S-shaped air cavity can increase the heat dissipation area, meanwhile, the position of the heat partition can be actively adjusted, the edge temperature of the radiating fin is prevented from being too high, the surface temperature uniformity of the radiating fin is improved, the overall heat dissipation capacity of the radiating fin is improved, and the comfort experience of a user is improved. Specifically, one peak of each air cavity 12 is disposed near the oil passage, and the other peak of each air cavity 12 is disposed near the edge of the fin body 10. In the area with higher edge temperature of the radiating fins, one wave crest of the air cavity is close to the oil circuit, and the heat transfer path is changed from the heat radiation position, so that the higher edge temperature point of the radiating fins is avoided; in the area with lower temperature of the edge of the radiating fin, the other air cavity is close to the edge of the radiating fin, and the influence on the temperature of the edge of the radiating fin is smaller, so that the heat can be redistributed in a local area, and the temperature value of the high point of the temperature of the radiating fin is reduced.

In the present embodiment, the plurality of air chambers 12 surround the periphery of the fin body 10. As an alternative embodiment, the plurality of air chambers 12 are located on the left and right sides of the oil passage.

In this embodiment, the fin body 10 includes left lamellar body and right lamellar body, all is formed with half of air cavity 12 and half of oil duct on left lamellar body and the right lamellar body, and half of air cavity 12 is formed through the part between two seams on the punching press substrate, and half of oil duct forms through the punching press substrate, and processing is convenient, reduction in production, the processing degree of difficulty, and then reduction in production cost. The left sheet body and the right sheet body are made of metal, and the metal is high in heat conductivity coefficient and can transfer heat away.

In this embodiment, the heat sink body 10 further has two oil pockets, the two oil pockets are an upper oil pocket and a lower oil pocket respectively, the oil passages are provided with three oil passages, which are respectively a left oil passage, a middle oil passage and a right oil passage, and the upper oil pocket and the lower oil pocket are communicated through the left oil passage, the middle oil passage and the right oil passage.

Example two

Fig. 3 and 4 show the structure of the second embodiment of the heat sink of the present application, and the heat sink of the second embodiment is different from the first embodiment in the shape and arrangement of the air cavity 12. In the second embodiment, the air cavity 12 is linear, so that the structure is simpler and the processing and manufacturing are convenient. The plurality of air chambers 12 are located on the left and right sides of the oil passage, and the non-disposed areas are generally lower temperature areas on the fins.

In the present embodiment, the lengths of the plurality of air chambers 12 located on the left and right sides of the oil passage are gradually reduced from top to bottom. In the region of higher edge temperature, the length of the air chamber is longer. The number of the air chambers 12 needs to be determined according to actual design requirements while taking manufacturing convenience into consideration, and generally, a plurality of air chambers 12 located on the left and right sides of the oil passage are symmetrically disposed. As an alternative embodiment, the plurality of air chambers 12 on the left and right sides of the oil passage are disposed asymmetrically.

In this embodiment, as shown in fig. 5, the cross-sectional shape of the air chamber 12 is rectangular, which facilitates manufacturing.

EXAMPLE III

Fig. 6 shows the structure of the third embodiment of the heat sink of the present application, and the heat sink of the third embodiment is different from the second embodiment in the length of the air cavity and the distance between two adjacent air cavities. In the third embodiment, the air chambers are the same in length, and the distance between any adjacent two air chambers 12 of the air chambers 12 located on the left and right sides of the oil passage gradually increases from top to bottom. In the area where the temperature of the edge of the heat sink is higher, the distance between two adjacent air chambers 12 is smaller.

In the present embodiment, the number of the air chambers 12 needs to be determined according to actual design requirements while considering manufacturing convenience, etc., and generally, a plurality of air chambers 12 located on the left and right sides of the oil passage are symmetrically disposed. As an alternative embodiment, the plurality of air chambers 12 on the left and right sides of the oil passage are disposed asymmetrically.

Example four

Fig. 7 shows the structure of the heat sink of the present application in the fourth embodiment, which is different from the second embodiment in the arrangement of the air chambers. In the fourth embodiment, the length of a plurality of air cavities is the same, a plurality of air cavities 12 form two sets of that the inside and outside interval set up, two sets of air cavities 12 are interior air cavity group and outer air cavity group respectively, a plurality of air cavities 12 in the interior air cavity group encircle a week of fin body 10, a plurality of air cavities 12 in the outer air cavity group are located the left side and the right side of oil duct, can further improve the heat-sinking capability of fin through interior air cavity group and outer air cavity group, and then avoid the edge surface temperature of fin too high effectively.

In the embodiment, a plurality of air cavities 12 in the inner air cavity group and a plurality of air cavities 12 in the outer air cavity group which are positioned on the same side of the oil passage are distributed in a staggered manner, and the air cavities are close to the oil passage in the high-temperature area of the radiating fin; the low temperature area of the heat sink, with the air cavity near the edge, achieves similar effects as the first embodiment.

EXAMPLE five

Fig. 8 shows the structure of the heat sink of the present application in the fifth embodiment, which is different from the second embodiment in the cross-sectional shape of the air cavity 12. In the fifth embodiment, the cross-sectional shape of the air chamber 12 is hexagonal. Of course, the cross-sectional shape of the air chamber 12 may be other shapes, and machining and manufacturing are preferable.

EXAMPLE six

Fig. 9 shows the structure of the sixth embodiment of the heat sink of the present application, which differs from the second embodiment in the cross-sectional shape of the air cavity 12. In the sixth embodiment, the cross-sectional shape of the air chamber 12 is circular.

EXAMPLE seven

Fig. 10 shows the structure of the heat sink of the present application in the seventh embodiment, which is different from the second embodiment in the cross-sectional shape of the air cavity 12. In the seventh embodiment, the cross-sectional shape of the air chamber 12 is elliptical.

Every fin is assembled by controlling two sheetmetals and forms, and the last half air chamber, half oil duct and half oil pocket of equal stamping forming on the sheetmetal about assembles and forms complete air chamber, oil duct and oil pocket, and a plurality of fin connects in series the assembly in proper order and forms the oil spit of fland body, and the last oil pocket of a plurality of fin, oil pocket down communicate respectively and form respectively and go up oil pocket through channel and oil pocket through channel down, and the heating rod sets up under in the oil pocket through channel.

In this embodiment, the electric heater further includes an auxiliary device, and the auxiliary device is disposed on the heating body. Auxiliary devices include, but are not limited to: the clothes hanger is arranged above the heating body and is suitable for drying clothes and the like; and the moving support is arranged at the bottom of the heating body and is suitable for supporting the heating body or driving the heating body to move. The movable support can be of a folding structure and also can be of an integrally formed structure, when the folding structure is adopted, the space occupation amount is reduced conveniently when the movable support is idle, and the storage efficiency of the electric heater is improved.

In this embodiment, the air chamber that adds has increased the heat transfer area of fin, is favorable to the oil spit of fland to the heat dissipation of surrounding air, and the air chamber that adds has lengthened the heat from the oil circuit to the propagation path of edge moreover, delays edge temperature rise rate.

The working principle of the electric heater is as follows: after the electric heater is electrified, the heat conduction oil is heated by the heating rod in the through channel of the lower oil pocket, the heat conduction oil moves upwards from the middle oil duct under the action of density difference and is collected in the upper oil pocket, the heat of the heat conduction oil is transferred to the surface of the radiating fin under the heat conduction action of the metal sheet and carries out heat convection with the air between the radiating fins, and the effect of heating a space is realized; the temperature of the heat conducting oil reaching the upper oil pocket is reduced to the minimum, and the cold oil moves to the lower oil pocket through the left oil passage and the right oil passage under the action of gravity to supplement the lower oil pocket. Along with the continuous work of electric heater, the oil circuit forms stable natural convection route. The air between the radiating fins is in a natural convection state, the hot air floats upwards along the radiating fins and is discharged into the space upwards at the top end of the heater body, and the cold air is supplemented from the bottom of the radiating fins.

The heat dissipation capacity of the lower part of the heat dissipation fin is stronger than that of the upper part of the heat dissipation fin due to the temperature difference of the heat transfer medium, and the temperature at the edge of the heat dissipation fin shows the phenomenon of up-heating and down-cooling along the height direction of the heat dissipation fin; experiments prove that the edge temperature high point of the radiating fin is generally near the central line of the upper oil pocket, and the temperature low point is near the upper end of the lower oil pocket; the high temperature point value is compared with the initial ambient temperature, if the temperature is increased to 85K, the safety standard is not met, and the burn risk can exist in the using process of a user. According to the air-cooling heat dissipation device, the plurality of air cavities are arranged between the edge of the heat dissipation fin and the oil duct, each air cavity is provided with the independent air inlet and the independent air outlet, independent natural convection small circulation is formed, heat absorbed by air is continuously discharged, a heat dissipation source is formed, and the overall heat dissipation capacity of the heat dissipation fin is improved; the air chamber can actively adjust the position of the heat partition, the edge temperature of the radiating fin is prevented from being too high, the surface temperature uniformity of the radiating fin is improved, the overall radiating capacity of the radiating fin is improved, and the comfort experience of a user is improved.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

a plurality of air cavities are arranged between the edge of the radiating fin and the oil duct, so that the radiating area is increased, and meanwhile, each air cavity is a cavity body with independent air inlet and outlet, natural convection circulation can be formed, absorbed heat can be continuously discharged, and the radiating capacity is improved; the air chamber can be set up the position that the heat cuts off by the initiative adjustment, can reduce the temperature rise value of high point department of temperature, avoids fin edge temperature too high, improves fin surface temperature homogeneity, promotes fin total heat-sinking capability, when the guarantee user safety in utilization, has reduced accuse temperature component action number of times, and the guarantee oil spit of fland lasts the thermal ability of output full volume, improves user's comfort and experiences.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A heat sink comprising a heat sink body (10), the heat sink body (10) having an oil passage, characterized in that the heat sink body (10) further has a plurality of air chambers (12) located outside the oil passage, a lower portion of each of the air chambers (12) having an air inlet (121), and an upper portion of each of the air chambers (12) having an air outlet (122).

2. A heat sink according to claim 1, characterised in that the air chambers (12) are arranged protruding from at least one surface of the heat sink body (10).

3. A heat sink according to claim 2, wherein the air inlet (121) is provided in a lower portion of the air chamber (12) protruding from both surfaces of the heat sink body (10), and the air outlet (122) is provided in an upper portion of the air chamber (12) protruding from both surfaces of the heat sink body (10).

4. A heat sink according to claim 1, characterised in that the air chambers (12) are S-shaped or rectilinear.

5. A fin as claimed in claim 4, characterised in that when the air cavities (12) are S-shaped, one peak of each air cavity (12) is located adjacent the oil gallery and the other peak of each air cavity (12) is located adjacent the edge of the fin body (10).

6. A fin as claimed in claim 1, characterised in that a plurality of said air chambers (12) surround a circumference of said fin body (10), or in that a plurality of said air chambers (12) are located on the left and right sides of said oil passage.

7. A heat sink as claimed in claim 1, wherein said plurality of air chambers (12) form two sets of spaced apart inner and outer sets of air chambers (12), said two sets of air chambers (12) being an inner air chamber set and an outer air chamber set, respectively, said plurality of air chambers (12) in said inner air chamber set surrounding a circumference of said heat sink body (10), said plurality of air chambers (12) in said outer air chamber set being located on left and right sides of said oil gallery.

8. The fin according to claim 7, wherein a plurality of the air chambers (12) in the inner air chamber group and a plurality of the air chambers (12) in the outer air chamber group which are located on the same side of the oil passage are alternately distributed.

9. The fin according to any one of claims 1 to 8, wherein the length of the plurality of air chambers (12) located on at least one of the left and right sides of the oil passage is gradually reduced from top to bottom; and/or the distance between any two adjacent air chambers (12) in the plurality of air chambers (12) positioned on at least one side of the left side and the right side of the oil channel is gradually increased from top to bottom; and/or the fin body (10) comprises a left sheet body and a right sheet body, wherein a half of the air cavity (12) and a half of the oil channel are formed on the left sheet body and the right sheet body, the half of the air cavity (12) is formed by stamping a part between two seams on a substrate, and the half of the oil channel is formed by stamping the substrate; and/or the cross-sectional shape of the air chamber (12) is circular or elliptical or polygonal.

10. A heat-generating body, characterized by comprising:

a plurality of the fins of any one of claims 1 to 9, arranged side by side with each other;

and the heating rod is simultaneously arranged at the oil outlet position of each radiating fin in a penetrating manner.

11. An electric heater, comprising:

the heat-generating body of claim 10:

the temperature control element is arranged on the heating body;

and the indicating lamp is arranged on the heating body and is electrically connected with the temperature control element.

12. The electric heater according to claim 11, further comprising an auxiliary device disposed on the heating body.