CN212132643U - Cooling fin, heating body and electric heater - Google Patents

Abstract

The utility model discloses a fin, heat-generating body and electric heater, this fin includes: the first heat dissipation area and the second heat dissipation area are arranged along the height direction; the oil pocket structure comprises an upper oil pocket formed at the top of the radiating fin and a lower oil pocket formed at the bottom of the radiating fin and used for containing heat conduction oil; and the heat conduction oil paths are communicated with the upper oil pocket and the lower oil pocket, the number of the heat conduction oil paths in the second heat dissipation area is greater than that of the heat conduction oil paths in the first heat dissipation area, and at least one cross point exists in the heat conduction oil paths in the first heat dissipation area or the second heat dissipation area. So set up, can increase the conduction oil operation route, increase heat radiating area to promote the heat-sinking capability of oil circuit. The disturbance of the heat conduction oil in the heat conduction oil way is enhanced, so that natural convection heat exchange can be performed between the heat conduction oil ways, and the capability of natural convection heat exchange of air outside the electric heater is improved.

Description

Cooling fin, heating body and electric heater

Technical Field

The utility model relates to the technical field of household appliances, concretely relates to fin, heat-generating body and electric heater.

Background

The electric heater is used as a household appliance commonly used for household winter heating, the working principle of the electric heater is that an electric heating rod is used for heating heat conduction oil in oil pockets on the bottom of radiating fins, then the high-temperature heat conduction oil enters the oil pockets on the tops of the radiating fins through a heat conduction oil way, the heat conduction oil between adjacent radiating fins is communicated through the oil pockets, and the heat conduction oil heats the radiating fins in the process of circulating through the heat conduction oil way, so that the heat is transferred to the ambient air to achieve the purpose of heating a user.

In the working process of the electric heater, the temperature distribution around the electric heater is determined by the oil circuit structure. As shown in figure 1, the structure of the current electric heater oil circuit is regular and symmetrical, the temperature of heat conduction oil at each position is the same as the heat dissipation capacity of the oil circuit shell, and heat convection cannot be carried out between the heat conduction oil circuits, so that the natural heat convection condition is poor. Because when heating, the flow field rule of the heat conducting oil in the electric heater at present is usually: after the heat conduction oil at the bottom of the electric heater is heated by the heating rod, the density is reduced, and compared with other low-temperature oil, the oil can go upwards along an oil way. Because the middle oil way is wide, most of heated heat conduction oil can go upwards along the middle oil way, directly flows to the upper oil bag and flows downwards through the oil ways on the two sides, hot fluid is concentrated on the upper part of the electric heater, and cold fluid is concentrated on the lower part of the electric heater, so that the problems of high upper temperature and low lower temperature of the electric heater occur. Yet another major reason for this problem is that: the temperature change of the heat conduction oil in the oil way is basically within 20 ℃, but because the air is heated when the electric heater shell dissipates heat, the density is reduced, the air gradually rises, the air temperature gradually rises in the rising process, the heat dissipation effect on the electric heater shell is weakened, and the shell temperature is high and low. Therefore, after long-time use, tests show that the temperature difference between the upper part and the lower part of the electric heater is as high as 40 ℃, and the uniformity of the surface temperature distribution of the radiating fins is extremely poor.

In consideration of the use safety of users, the electric heater is provided with a temperature control system for adjusting the output power of electric heating, so that the temperature of the accessible edge is within a safe range, and dangers such as scalding are avoided. However, the temperature difference between the upper part and the lower part of the electric heater is extremely large, the local point at the upper part of the electric heater can easily reach the set temperature, and when the set temperature is reached, the temperature control element of the electric heater works, so that the full-power output time of the electric heater is reduced, the continuous heat supply capacity is poor, and the comfort of a user is poor.

Although patent CN203364237U discloses a heat sink with a mesh structure for uniformly arranging oil passages, the oil passages of the heat sink are designed to be communicated with the mesh structure, which increases the area of heat exchange between the oil guide grooves on the heat sink and the outside. But the phenomenon of uneven temperature of the electric heater is not improved, and the processing difficulty is large.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the electric heater fin among the prior art about the difference in temperature great, the electric heater temperature is inhomogeneous, the big problem of processing difficulty to a fin, heat-generating body and electric heater are provided.

In order to solve the above technical problem, the utility model provides a cooling fin, this cooling fin includes: the first heat dissipation area and the second heat dissipation area are arranged along the height direction; the oil pocket structure comprises an upper oil pocket formed at the top of the radiating fin and a lower oil pocket formed at the bottom of the radiating fin; the heat conduction oil path is communicated with the upper oil pocket and the lower oil pocket; the number of the heat conduction oil paths in the second heat dissipation area is larger than that of the heat conduction oil paths in the first heat dissipation area, and at least one intersection point exists in the heat conduction oil paths in the first heat dissipation area or the second heat dissipation area.

Optionally, the heat conducting oil path includes a first oil path corresponding to the first heat dissipation area, and a second oil path corresponding to the second heat dissipation area.

Optionally, a first auxiliary oil passage is provided between the first oil passage and the second oil passage.

Optionally, two ends of the first auxiliary oil path are respectively connected to two ends of the first oil path.

Optionally, both ends of the first auxiliary oil passage are disposed at a portion where the first oil passage is connected to the second oil passage.

Optionally, the heat sink further includes a second auxiliary oil passage, one end of the second auxiliary oil passage is disposed between two ends of the first auxiliary oil passage, and the other end of the second auxiliary oil passage is communicated with the lower oil pocket.

Optionally, one end of the second auxiliary oil passage is disposed at a middle portion of the first auxiliary oil passage.

Optionally, the heat sink further includes a third auxiliary oil passage, one end of the third auxiliary oil passage is connected to the upper oil pack, and the other end of the third auxiliary oil passage is communicated with the first auxiliary oil passage.

Optionally, the other end of the third auxiliary oil passage is disposed in a middle portion of the first auxiliary oil passage.

Optionally, the third auxiliary oil passage communicates with the intersection point.

Optionally, the heat sink further includes a fourth auxiliary oil path, which is communicated with the second oil path, and the second oil path is disposed on a side of the first auxiliary oil path away from the first oil path.

Alternatively, the first auxiliary oil passage and the fourth auxiliary oil passage are provided in parallel with each other.

Optionally, the first oil path is provided with a plurality of oppositely arranged wave crests and wave troughs.

The utility model also provides a heat-generating body, this heat-generating body includes: a plurality of said fins 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.

The utility model also provides an electric heater, this electric heater includes: the above-mentioned heating element; 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.

Optionally, the electric heater further comprises: and the auxiliary device is arranged on the heating body.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a cooling fin, this cooling fin includes: the first heat dissipation area and the second heat dissipation area are arranged along the height direction; the oil pocket structure comprises an upper oil pocket formed at the top of the radiating fin and a lower oil pocket formed at the bottom of the radiating fin and used for containing heat conduction oil; and the heat conduction oil paths are communicated with the upper oil pocket and the lower oil pocket, the number of the heat conduction oil paths in the second heat dissipation area is greater than that of the heat conduction oil paths in the first heat dissipation area, and at least one cross point exists in the heat conduction oil paths in the first heat dissipation area or the second heat dissipation area.

So set up, through having a crosspoint with the heat conduction oil circuit in first heat dissipation district or the second heat dissipation district at least, compare in the oil circuit of prior art medium-linear type, can increase the heat conduction oil traffic route, increase heat radiating area to promote the heat-sinking capability of oil circuit. And because the heat conduction oil path in the first heat dissipation area has at least one cross point, the temperature of the heat conduction oil path at each position is different from the heat dissipation capacity of the oil path shell, the disturbance of the heat conduction oil in the heat conduction oil path is enhanced, the natural convection heat exchange can be carried out between the heat conduction oil paths, and the natural convection heat exchange capacity of the air outside the electric heater is improved. The number of the heat conduction oil ways in the second heat dissipation area is larger than that of the heat conduction oil ways in the first heat dissipation area, so that the surface area of the oil ways is increased, the heat dissipation capacity of the electric heater is increased, the improvement of the heat dissipation capacity of the lower portion of the heat dissipation fin is facilitated, the heat dissipation load of the upper portion of the heat dissipation fin is reduced, and the problem that the temperature of the upper portion of the heat dissipation fin is too high due to the insufficient heat dissipation capacity of. Compared with the prior art, the structure of the heat conduction oil way is obviously simplified, and the processing difficulty is reduced.

2. The utility model discloses a set up first supplementary oil circuit and second supplementary oil circuit, increased the oil circuit surface area to increased the heat dissipation capacity of electric heater, the conduction oil is by heating back edge and the supplementary oil circuit of second rise, reachs first supplementary oil circuit after, along first supplementary oil circuit both sides because of the poor effect upward movement of density or backward flow, be favorable to improving the heat dissipation capacity of fin lower part, reduce the heat dissipation load on fin upper portion simultaneously, avoid the not enough high temperature that leads to fin upper portion of fin upper portion heat-sinking capability.

3. The utility model discloses a be connected the one end of third auxiliary oil circuit with last oil pocket, the other end and first auxiliary oil circuit intercommunication, can increase oil circuit surface area, thereby increased the heat dissipation capacity of electric heater, the conduction oil is heated the back and is followed the supplementary oil circuit of second and the supplementary oil circuit of third and rise, after arriving the oil pocket, colder conduction oil moves through the heat conduction oil circuit of both sides down the oil pocket under the action of gravity, carry out the replenishment to the oil pocket down, along with the continuous work of electric heater, the oil circuit forms stable natural convection route. The heat dissipation conditions of the upper oil pocket and the lower oil pocket are improved, so that the temperature of each part of the electric heater is uniform.

4. The utility model discloses a set up the fourth auxiliary oil way, increased oil circuit surface area to increased the heat dissipation capacity of electric heater, and formed closed local loop between fourth auxiliary oil way and first oil circuit, second oil circuit, the conduction oil can flow at this loop inner loop, reduced the flow that the conduction oil got into the oil package, improved fin surface temperature's inhomogeneity.

5. The utility model discloses a crest and trough that are provided with a plurality of relative settings at first oil circuit can increase the conduction oil path of motion, increase heat radiating area, reinforce the electric heater outside air natural convection heat transfer.

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 is a schematic diagram of a prior art heat sink;

FIG. 2 is a front view of the present invention;

FIG. 3 is a front view of the present invention with a fourth auxiliary oil path;

FIG. 4 is a front view of the present invention with a third auxiliary oil path;

fig. 5 is a front view of a modified embodiment of the present invention.

Description of reference numerals:

1-a heat sink; 2-filling oil; 3-discharging oil; 4-a first oil path; 5-a second oil path; 6-first auxiliary oil way; 7-a second auxiliary oil way; 8-a fourth auxiliary oil way; 9-wave crest; 10-a third auxiliary oil way; 11-a first heat dissipation area; 12-a second heat dissipation area; 13-cross point.

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 1

As shown in fig. 2 to 5, an embodiment of the present invention provides a heat sink, where the heat sink 1 includes: an oil pocket structure, a heat conduction oil path and a first auxiliary oil path 6. The direction of the arrow is the flowing direction of the heat transfer oil.

The heat sink 1 is provided with a first heat dissipation area 11 and a second heat dissipation area 12 in the height direction. The oil pocket structure comprises an upper oil pocket 2 formed at the top of the radiating fin 1 and a lower oil pocket 3 formed at the bottom of the radiating fin 1, wherein the upper oil pocket 2 and the lower oil pocket 3 are used for storing heat conduction oil. The radiating fin 1 is formed by assembling a left metal sheet and a right metal sheet, wherein the left metal sheet and the right metal sheet are respectively provided with a stamping formed oil way and an oil pocket, and a through cavity formed after assembling is a heat conduction oil way, an upper oil pocket 2 and a lower oil pocket 3. The heat conduction oil path is communicated with the upper oil pocket 2 and the lower oil pocket 3, so that the heated heat conduction oil forms convection between the upper oil pocket 2 and the lower oil pocket 3. The number of the heat conducting oil paths in the second heat dissipation area 12 is larger than that in the first heat dissipation area 11, and at least one intersection point 13 exists in the heat conducting oil paths in the first heat dissipation area 11 or the second heat dissipation area 12.

After the electric heater is electrified, the heat conducting oil is heated by the electric heating element in the lower oil pocket 3, the heat conducting oil is heated to generate volume expansion, and the thermal expansion coefficient is about 7.5 multiplied by 10^－4K^－1Therefore, as the temperature increases, the thermal oil density decreases. Under the action of density difference, the heated heat-conducting oil moves towards the upper part and is collected in the upper oil pocket 2, the unheated heat-conducting oil moves towards the lower oil pocket 3 through the oil way under the action of gravity to supplement the lower oil pocket 3, and the oil continuously works along with the continuous work of the electric heaterThe circuit forms a stable natural convection path. The heat of hot oil is transferred to the surface of the radiating fin 1 through the heat conduction effect of metal, and is subjected to heat convection with the air between the radiating fins 1, so that the effect of heating the space is realized.

At least one cross point 13 exists in the heat conduction oil path in the first heat dissipation area 11 or the second heat dissipation area 12, so that compared with a linear oil path in the prior art, the heat conduction oil path can be increased, the heat dissipation area is increased, and the heat dissipation capacity of the oil path is improved. In addition, at least one cross point 13 exists in the heat conduction oil path in the first heat dissipation area 11, so that the temperature of the heat conduction oil path at each position is different from the heat dissipation capacity of the oil path shell, the disturbance of the heat conduction oil in the heat conduction oil path is enhanced, natural convection heat exchange can be performed between the heat conduction oil paths, and the capacity of natural convection heat exchange of air outside the electric heater is improved.

The number of the heat conduction oil ways in the second heat dissipation area 12 is larger than that of the heat conduction oil ways in the first heat dissipation area 11, so that the surface area of the oil ways is increased, the heat dissipation capacity of the electric heater is increased, the improvement of the heat dissipation capacity of the lower portion of the heat dissipation fin is facilitated, meanwhile, the heat dissipation load of the upper portion of the heat dissipation fin is reduced, and the problem that the temperature of the upper portion of the heat dissipation fin is too high due to the insufficient heat dissipation. Compared with the prior art, the structure of the heat conduction oil way is obviously simplified, and the processing difficulty is reduced.

In this embodiment, the cross section of the heat conduction oil path may be in a regular shape such as a circle, an ellipse, or a rectangle, or may be in an irregular shape as long as the oil can be guided.

On the basis of the above embodiment, the heat conduction oil path includes the first oil path corresponding to the first heat dissipation area 11 and the second oil path 5 corresponding to the second heat dissipation area 12. A first auxiliary oil way 6 is arranged between the first oil way 4 and the second oil way 5, and two ends of the first auxiliary oil way 6 are respectively connected with two ends of the first oil way 4.

In addition, as a preferred embodiment, both ends of the first auxiliary oil passage 6 are provided at a portion where the first oil passage 4 and the second oil passage 5 are connected.

Of course, in order to further increase the travel path of the conduction oil, the first auxiliary oil path 6 may be provided in an arch-shaped or wave-shaped structure. The heat conducting oil can be arranged in other shapes and structures, and the running path of the heat conducting oil can be increased, which is only an example and is not limited in the embodiment, and a person skilled in the art can change the heat conducting oil according to the actual situation.

As shown in fig. 2 to 5, a plurality of intersections 13 may be provided in the heat transfer oil path of the first heat dissipation area 11, or a plurality of intersections 13 may be provided in the heat transfer oil path of the second heat dissipation area 12. When the heat conduction oil paths of the first heat dissipation area 11 are provided with a plurality of intersections 13, the heat conduction oil paths of the second heat dissipation area 12 are arranged in parallel. When the heat conduction oil path of the second heat dissipation area 12 is provided with a plurality of intersections 13, the heat conduction oil path of the first heat dissipation area 11 is arranged in parallel. Certainly, first oil circuit 4 and second oil circuit 5 can all set up to wave type oil circuit or/and bending type oil circuit, so can increase the conduction oil traffic route, increase heat radiating area, strengthen the electric heater outside air natural convection heat transfer.

As shown in fig. 2, in order to further optimize the structure of the heat sink, on the basis of the above embodiment, the heat-conducting oil paths of the first heat dissipation area 11 are provided with a plurality of intersections 13, and the heat-conducting oil paths of the second heat dissipation area 12 are arranged in parallel. At this time, the heat sink may further include: and a second auxiliary oil passage 7. One end of the second auxiliary oil passage 7 is disposed between the first auxiliary oil passages 6 and communicated with the first auxiliary oil passages 6, and the other end is communicated with the lower oil pocket 3. The second auxiliary oil passage 7 may be of a straight type. Of course, in order to ensure smooth flowing of the heat conducting oil of the heat radiating fins, one end of the second auxiliary oil path can be directly arranged in the middle of the first auxiliary oil path.

Therefore, when heating, the heat conduction oil flows to the left side and the right side after flowing into the first auxiliary oil way 6 through the second auxiliary oil way 7, and then returns to the second auxiliary oil way 7 through the oil ways on the two sides of the second oil way 5, so that a local loop is formed, the circulation quantity of the heat conduction oil in the upper part and the lower part of the electric heater is adjusted, the heat conduction oil can circularly flow in the closed loop without continuously moving upwards, the quantity of the hot oil entering the upper part of the radiating fin 1 is reduced, and the surface temperature unevenness of the radiating fin 1 is improved.

In this embodiment, the surface area of the oil path is increased by adding the second auxiliary oil path 7, so that the heat dissipation capacity of the electric heater is increased, the heat conduction oil rises along the heated rear edge and the second auxiliary oil path 7, and after reaching the first auxiliary oil path 6, the heat conduction oil moves upwards or flows backwards downwards along the two sides of the first auxiliary oil path 6 due to the density difference effect, the improvement of the heat dissipation capacity of the lower part of the heat dissipation fin 1 is facilitated, meanwhile, the heat dissipation load of the upper part of the heat dissipation fin 1 is reduced, and the over-high temperature of the upper part of the heat dissipation fin 1 caused by.

Of course, in order to further increase the travel path of the conduction oil, the second auxiliary oil path 7 may be provided in an arch-shaped or wave-shaped structure. The heat conducting oil can also be arranged into other shape structures, and the operation path of the heat conducting oil can be increased.

As shown in fig. 3, the structure of the heat sink may be further optimized, and the heat sink further includes a third auxiliary oil passage 10 based on the above-described embodiment. One end of the third auxiliary oil path 10 is connected with the upper oil package, and the other end is communicated with the first auxiliary oil path. Of course, in order to ensure smooth flow of the heat transfer oil of the heat sink, the other end of the third auxiliary oil path 10 may be directly connected to the middle portion of the first auxiliary oil path. And, the third auxiliary oil passage 10 communicates with the intersection 13 of the first oil passage.

By the arrangement, the upper part and the lower part of the radiating fin 1 are designed into three oil paths, the lower part of the radiating fin is provided with three vertical oil paths, the upper central oil path is kept vertical, the two side oil paths are designed into waves, the three oil paths form a cross point 13 in the center, and a transverse first auxiliary oil path 6 is arranged at the oil path switching position. The heat conducting oil moves upwards from the middle second auxiliary oil path 7 and the middle third auxiliary oil path 10 to enter the upper oil pocket 2, and the cooling oil moves downwards from the oil paths at the two sides to return to the lower oil pocket 3. The temperature of the edges on the left side and the right side is approximately the same while the overhigh temperature of the edges on the upper part of the radiating fin 1 is improved, and the uniformity and the symmetry of the surface temperature of the radiating fin 1 can be improved.

So set up, can increase the oil circuit surface area to increased the heat dissipation capacity of electric heater, the conduction oil is heated the back and is followed the supplementary oil circuit 7 of second and rise, after reaching oil pocket 2, colder conduction oil down 3 movements of oil pocket down through the heat conduction oil circuit of both sides under the action of gravity, supply oil pocket 3 down, along with the continuous work of electric heater, the oil circuit forms stable natural convection route. The heat dissipation conditions of the upper oil pocket 2 and the lower oil pocket 3 are improved, so that the temperature of each part of the electric heater is uniform.

On the basis of the above-described embodiment, the structure of the heat sink can be further optimized. As shown in fig. 4, the heat sink further includes: and a fourth auxiliary oil passage 8. The fourth auxiliary oil passage 8 is transversely provided in parallel with the first auxiliary oil passage. After the fourth auxiliary oil path 8 is communicated with the second auxiliary oil path 7 in a crossing manner, one end of the fourth auxiliary oil path is communicated with the first oil path 4, and the other end of the fourth auxiliary oil path is communicated with the second oil path 5. The second oil passage is now provided on the side of the first auxiliary oil passage remote from the first oil passage, i.e., on the lower portion of the heat sink.

Through setting up fourth auxiliary oil circuit 8, further increased the oil circuit surface area to the heat dissipation capacity of electric heater has been increased, and form closed local loop between fourth auxiliary oil circuit 8 and first oil circuit 4, second oil circuit 5, the conduction oil can be at this loop inner loop circulation flow, has reduced the flow that the conduction oil got into oil pocket 2, has improved the inhomogeneity of fin 1 surface temperature.

On the basis of any one of the above embodiments, the first oil path may be a wave-shaped oil path, and is provided with a plurality of oppositely arranged wave crests 9 and wave troughs.

On the basis of fig. 3, the arrangement may be reversed, as shown in fig. 4, that is, the heat-conducting oil paths of the second heat dissipation area 12 are provided with a plurality of intersections 13, and the heat-conducting oil paths of the first heat dissipation area 11 are arranged in parallel.

The direction of the arrow in fig. 4 is the flowing direction of the heat conducting oil inside the electric heater. The upper part and the lower part are all three oil paths, the upper part is provided with 3 vertical oil paths, the lower part is provided with a central oil path which keeps vertical, the oil paths at the two sides are designed into wave shapes, the three oil paths form a cross point 13 at the center, and a transverse oil path is arranged at the oil path switching position. The lower part of the radiating fin 1 has larger radiating area and stronger fluid disturbance, the radiating capacity of the lower part of the radiating fin 1 is enhanced, the heat carried by the heat conducting oil entering an oil way at the upper part of the radiating fin 1 is reduced, and the problem of overhigh temperature of the edge at the upper part of the radiating fin 1 can be solved. The flow disturbance is mainly related to the shape of the oil path, and when the oil path is not straight, the flow resistance is increased, and the disturbance intensity is also increased.

Above-mentioned each embodiment is through the different regional oil circuit differentiation design of fin 1, adjusts the circulation volume of different oil circuit conduction oils and carries the heat, makes it and the radiating environment phase-match around the fin 1, improves fin 1 surface temperature homogeneity, has reduced electric heater temperature control element's action number of times, has ensured the electric heater and has continuously exported the thermal ability of full volume, has promoted user's comfort and has experienced.

Example 2

The embodiment of the utility model provides a heat-generating body is still provided, this heat-generating body includes:

the heat sink of any one of the above claims, wherein a plurality of said heat sinks are arranged side-by-side with one another;

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

Example 3

The embodiment of the utility model provides an electric heater is still provided, and this electric heater includes: the heating body, the temperature control element and the indicator light. The temperature control element and the indicator light are both arranged on the heating body, and the indicator light is electrically connected with the temperature control element.

Furthermore, an auxiliary device is arranged on the heating element. The auxiliary device may be a fan. Because the air among the radiating fins 1 is in a natural convection state, the hot air floats upwards along the radiating fins 1 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 1. Can strengthen the electric heater outside air natural convection intensity through setting up the fan for the speed in the space is upwards discharged to the hot-air along fin 1, has strengthened the air mobility between the fin 1, has reduced the upper and lower difference in temperature of electric heater, has improved user's use and has experienced.

The auxiliary device may also be, but is not limited to: the clothes hanger is arranged above the heating body and is suitable for drying clothes and the like; the heating body can be supported or driven by the movable support 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.

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 (16)

1. A heat sink, comprising:

a first heat dissipation area (11) and a second heat dissipation area (12) arranged in the height direction;

the oil pocket structure comprises an upper oil pocket (2) formed at the top of the radiating fin (1) and a lower oil pocket (3) formed at the bottom of the radiating fin (1);

the heat conduction oil path is communicated with the upper oil pocket (2) and the lower oil pocket (3); the number of the heat conduction oil paths in the second heat dissipation area (12) is larger than that in the first heat dissipation area (11), and at least one intersection point (13) exists in the heat conduction oil paths in the first heat dissipation area (11) or the second heat dissipation area (12).

2. A heat sink according to claim 1, characterised in that the heat conducting oil circuit comprises a first oil circuit (4) corresponding to the first heat dissipation area (11), and a second oil circuit (5) corresponding to the second heat dissipation area (12).

3. A heat sink according to claim 2, characterised in that a first auxiliary oil passage (6) is provided between the first oil passage (4) and the second oil passage (5).

4. A heat sink according to claim 3, wherein both ends of the first auxiliary oil passage (6) are connected to both ends of the first oil passage (4), respectively.

5. The heat sink as recited in claim 4, wherein both ends of the first auxiliary oil passage (6) are provided at a portion where the first oil passage (4) and the second oil passage (5) are connected.

6. The fin according to any one of claims 3 to 5, further comprising a second auxiliary oil passage (7), one end of the second auxiliary oil passage (7) being disposed between both ends of the first auxiliary oil passage (6), and the other end thereof being communicated with the lower oil pocket (3).

7. The heat sink as recited in claim 6, wherein one end of the second auxiliary oil passage (7) is provided at a middle portion of the first auxiliary oil passage (6).

8. The fin according to any one of claims 3 to 5, further comprising a third auxiliary oil passage (10), one end of the third auxiliary oil passage (10) being connected to the upper oil pocket (2), and the other end being communicated with the first auxiliary oil passage (6).

9. The heat sink as recited in claim 8, wherein the other end of the third auxiliary oil passage (10) is provided at a middle portion of the first auxiliary oil passage (6).

10. The heat sink as recited in claim 8, wherein the third auxiliary oil passage (10) communicates with the intersection (13).

11. A heat sink according to any one of claims 3-5, further comprising a fourth auxiliary oil passage (8) communicating with the second oil passage (5), the second oil passage (5) being provided on the side of the first auxiliary oil passage (6) remote from the first oil passage (4).

12. A heat sink according to claim 11, wherein the first auxiliary oil passage (6) and the fourth auxiliary oil passage (8) are arranged in parallel with each other.

13. A heat sink according to any of claims 2-5, characterised in that the first oil channel (4) is provided with a number of oppositely arranged peaks (9) and valleys.

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

-a number of heat sinks (1) as claimed in any of claims 1-13, a number of said heat sinks (1) being arranged alongside each other;

the heating rod is simultaneously arranged at the position of the lower oil pocket (3) of each radiating fin (1) in a penetrating mode.

15. An electric heater, comprising:

a heat-generating body as described in claim 14;

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.

16. The electric heater of claim 15, further comprising:

and the auxiliary device is arranged on the heating body.

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