CN206191726U - oil heater - Google Patents

Abstract

The utility model discloses an oil spit of fland room heater, include: the two oil pipes are distributed at intervals in the vertical direction; the two ends of each radiating fin are respectively arranged on the two oil pipes, an oil passage communicated with the two oil pipes is arranged in each radiating fin, an air chamber separated from the oil passage is arranged at the edge of at least one side of each radiating fin, the air chamber is provided with an air inlet and a top air outlet arranged at the top of the air chamber, and the air chambers of the two adjacent radiating fins are separated to limit an air flow passage. The utility model discloses an oil heater, the temperature of the most marginal of high temperature region and fin that can reduce the oil sweetgum fruit passageway part of fin increases the flow strength of fin internal surface air and surface air, strengthens the heat-sinking capability of fin, avoids the user to use the danger that oil heater in-process was scalded.

Description

oil heater

technical field

The utility model relates to the technical field of household appliances, in particular to an oil heater.

Background technique

The working principle of the current oil heater is to use electric heating rods to heat the heat-conducting oil in the metal cavity, and then the high-temperature heat-conducting oil transfers heat to the surrounding air through the metal cavity and the heat sink on the cavity to achieve the purpose of heating for users. . Generally, the higher the temperature of the metal cavity and the heat sink, the better the heat dissipation to the ambient air.

A very thin air chamber is generally left on the edge of the heat sink of the oil heater in the related art, and through holes are designed at regular intervals on the air chamber, and the air enters the air chamber through the through holes. The thermal conductivity is far lower than that of metal (generally stainless steel), so the oil heater in the related art can achieve the purpose of insulating part of the heat at the edge of the heat sink. However, the oil heater only relies on the air heat insulation design in the air chamber, which cannot sufficiently cool the edge of the heat sink, and there is a danger of burns to the user during use.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the utility model proposes an oil heater, which can reduce the temperature of the high-temperature area of the oil channel part of the heat sink and the edge of the heat sink, increase the flow intensity of the air on the inner surface of the heat sink and the air on the outer surface, and enhance heat dissipation. The heat dissipation ability of the sheet can avoid the danger of scalding when the user uses the oil heater.

The oil heater heater according to the embodiment of the present invention comprises: two oil pipes, and the two oil pipes are distributed at intervals in the up and down direction; Each of the heat sinks is provided with an oil channel communicating with the two oil pipes, and at least one side edge of each heat sink is provided with an air chamber spaced from the oil channel, The air chamber has an air inlet and a top air outlet arranged at the top of the air chamber, and the air chambers of two adjacent cooling fins are spaced apart to define an air flow channel.

According to the oil heating heater of the embodiment of the utility model, an air chamber with an air inlet and a top air outlet is arranged on the edge of the heat sink, and two adjacent air chambers are spaced apart. Reduce the temperature of the high-temperature area of the oil channel part of the heat sink and the edge of the heat sink, increase the flow strength of the air on the inner surface of the heat sink and the air on the outer surface, strengthen the heat dissipation capacity of the heat sink, and avoid the use of oil by the user Risk of burns during heating.

According to some embodiments of the present utility model, the air inlet includes a bottom air inlet arranged at the bottom of the air chamber.

According to some embodiments of the present utility model, the flow area of the air channel decreases gradually in the direction from the outside to the inside.

According to some embodiments of the present utility model, the value range of the ratio of the flow area of the air passage to the flow area of the area between two adjacent heat sinks where the oil passage is set is: 0.4 -0.6.

According to some embodiments of the present utility model, the air inlet includes a side air inlet provided on the outer peripheral wall of the air chamber, and a side air outlet is provided on the inner wall of each air chamber.

Further, in the vertical direction, the height of the side air inlet is lower than the height of the side air outlet.

Optionally, the side air inlet and the side air outlet are respectively formed as rectangular holes extending in the vertical direction.

Specifically, the aspect ratios of the side air inlet and the side air outlet both range from 6-10.

According to some embodiments of the present utility model, in the length direction of the oil pipe, the air inlet includes a side wall air inlet arranged on at least one of the opposite side walls of the air chamber, each A side air outlet is provided on the inner wall of each of the air chambers.

Further, the side wall air inlets are provided on opposite side walls of the air chamber.

Optionally, the same side wall of the air chamber is provided with a plurality of side wall air inlets distributed sequentially from the outside to the inside, and each of the side wall air inlets is provided with an inward Or the air deflectors extending outward, the extension directions of the air deflectors on the same side wall are the same.

Specifically, there are two side air outlets in each of the air chambers and they are distributed on both sides of the portion of the heat sink that defines the oil passage.

Description of drawings

Fig. 1 is a front view of an oil heater according to an embodiment of the present invention;

Fig. 2 is the bottom view of the cooling fin of the oil heater shown in Fig. 1;

Fig. 3 is a partial schematic diagram of the A-A section of the oil heater shown in Fig. 1;

Fig. 4 is a partial structural schematic view of different embodiments of the heat sink in the oil heater according to the embodiment of the present invention;

Fig. 5 is a comparison diagram of the relationship curve between the heat sink according to the embodiment of the utility model and the heat sink of the related art and the ambient temperature difference;

Fig. 6 is a comparison diagram of the heat dissipation power of the oil heater according to the embodiment of the utility model and the oil heater of the related art.

Reference signs:

Oil heater 100;

oil pipe 1; heat sink 2; oil channel 20; air chamber 21; bottom air inlet 210a;

side air inlet 210b; side wall air inlet 210c; wind deflector 210d; top air outlet 211;

Side air outlet 212 ; air channel 3 .

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components , unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The oil heater 100 according to the embodiment of the present utility model will be described below with reference to FIGS. 1-6 . The arrows in Figures 1-4 indicate the flow direction of the cold air.

As shown in FIGS. 1-4 , the oil heater 100 according to the embodiment of the present utility model includes: two oil pipes 1 and a plurality of cooling fins 2 .

The two oil pipes 1 are distributed at intervals in the up and down direction. The two ends of each heat sink 2 are respectively arranged on two oil pipes 1, and each heat sink 2 is provided with an oil channel 20 communicating with the two oil pipes 1, that is to say, two oil pipes 1 pass through a plurality of heat sinks. The oil channel 20 of 2 communicates to form an oil circulation loop. At least one side edge of each cooling fin 2 is provided with an air chamber 21 spaced from the oil channel 20. The air chamber 21 has an air inlet and a top air outlet 211 located at the top of the air chamber 21. The adjacent two The air chambers 21 of the heat sinks 2 are spaced apart to define the air channels 3 . Preferably, air cavities 21 are provided on both side edges of each cooling fin 2 , and adjacent air cavities 21 on the same side are spaced apart.

It can be understood that the oil heater 100 also includes a heating rod arranged in the lower oil pipe 1 to heat the heat transfer oil in the oil pipe 1 . Preferably, a bimetallic temperature control element is installed on the oil heater 100, and when the temperature of the heat transfer oil reaches the temperature set by the user, the temperature control element will automatically cut off the power supply.

When the oil heater 100 is powered on, the heat transfer oil in the lower oil pipe 1 is heated by the heating rod, and then the high temperature heat transfer oil rises to the upper oil pipe 1 through the oil passages 20 in the plurality of cooling fins 2 , forming an oil circuit circulation, the oil heater 100 radiates the heat of the heat transfer oil through the two oil pipes 1 and the peripheral wall surface of the heat sink 2, thereby heating the surrounding space environment, and the heat transfer oil cooled by air descends to the oil pipe below 1 is heated by the heating rod again to start a new cycle.

The cold air outside the oil heater 100 enters the inside of the air chamber 21 through the air inlet of the air chamber 21, and flows out through the top air outlet 211, that is, in the air chamber 21 at the edge of the cooling fin 2 An air flow channel is formed, and in the process of air flow, the edge of the heat sink 2 will dissipate heat, thereby reducing the temperature of the edge of the heat sink 2 . The cold air also enters the high temperature zone between two adjacent cooling fins 2 of the oil heater 100 through the air channel 3 and circulates to cool the heat transfer oil. When the air enters the air channel 3 , the flowing air can also dissipate heat to the peripheral wall of the air chamber 21 , thereby further reducing the edge temperature of the heat sink 2 .

It should be noted that, in the description of the present utility model, "high temperature zone" only means that the temperature of the area where the oil channel 20 of the heat sink 2 is set is higher than the temperature of the area of the heat sink 2 where the air chamber 21 is set, while A specific temperature value is not specified.

According to the oil heater 100 of the embodiment of the utility model, the air chamber 21 is arranged on the edge of the heat sink 2. Compared with the oil heater of the related art, the heat sink of the oil heater 100 of the embodiment of the utility model The air gap at the edge of the heat sink 2 is enlarged, so that the heat dissipation area at the edge of the heat sink 2 can be increased, which is beneficial to the heat dissipation at the edge of the heat sink 2 and reduces the temperature at the edge of the heat sink 2 .

The inventor found through a large number of experiments that, as shown in Figure 5 and Figure 6, the edge temperature of the heat sink 2 of the oil heater 100 of the utility model is compared with the edge temperature of the heat sink of the oil heater of the related art. The temperature difference relative to the environment is obviously reduced, and the temperature drop range is above 20%, and the heat dissipation power of the oil heater 100 of the utility model is obviously improved, and the increase is about 28%.

The inventor found through experiments that when the aspect ratio of the air chamber 21 is 1 and the distance between the air chambers 21 of two adjacent heat sinks 2 is not less than 5mm, the cooling fins of the oil heater 100 The cooling and cooling effect of the edge of the heat sink 2 is obvious, and the flow effect of the air on the inner surface and the air on the outer surface of the heat sink 2 is optimal.

According to the oil heater 100 of the embodiment of the present utility model, an air chamber 21 having an air inlet and a top air outlet 211 is provided on the edge of the heat sink 2 , and two adjacent air chambers 21 are spaced apart. Thereby reducing the temperature of the high temperature area of the oil channel 20 part of the heat sink 2 and the edge of the heat sink 2, increasing the flow intensity of the air on the inner surface of the heat sink 2 and the air on the outer surface of the heat sink 2, and strengthening the heat dissipation capacity of the heat sink 2, The danger of being scalded when the user uses the oil heater 100 is avoided.

As shown in FIGS. 1-2 , according to some embodiments of the present invention, the air inlet includes a bottom air inlet 210a disposed at the bottom of the air chamber 21 . Thereby, an air flow passage from bottom to top can be formed inside the air chamber 21, so that the cold air outside the oil heater 100 enters into the air chamber 21 through the bottom air inlet 210a at the bottom of the air chamber 21, and the cold air The air flows out along the top air outlet 211 at the top of the air chamber 21 and takes away the heat in the air chamber 21 . When the cold air flows in the air chamber 21 , the temperature of the high temperature area of the oil channel 20 in the cooling fin 2 will also be reduced. It can be understood that when the cold air enters the air chamber 21 and takes away the heat in the air chamber 21, the temperature of the cold air itself also increases, and the high temperature air will flow upward naturally. Therefore, setting the top air outlet 211 and the bottom air inlet 210a on the air chamber 21 can accelerate the cooling speed of the outermost edge of the heat sink 2 to a certain extent.

According to some embodiments of the present invention, the flow area of the air channel 3 decreases gradually in the direction from the outside to the inside. The setting of the air channel 3 is conducive to the cold air in the horizontal direction outside the oil heater 100 entering the high temperature zone between the heat sinks 2 of the oil heater 100 through the air channel 3 and between the adjacent heat sinks 2 circulating flow. It can be understood that the change of the cross section of the air channel 3 can form a diversion effect on the cold air outside the oil heater 100, and promote the cold air in the horizontal direction on the outside of the heat sink 2 to enter the high temperature area and flow on the adjacent heat sink 2. Circulating flow between them for heat exchange improves the heat dissipation effect of the oil heater 100 and speeds up the cooling speed of the outermost edge of the heat sink 2 . In some examples of the present utility model, as shown in part b of FIG. In the direction from outside to inside, the flow area of the air channel 3 decreases gradually. Of course, in order to gradually reduce the flow area of the air flow channel 3, the inner wall of the air flow channel 3 is not limited to a curve, and can also be realized by setting it as a straight line, a stepped shape, or the like.

The inventors have found through experiments that when the ratio of the flow area of the air passage 3 to the area between the two adjacent cooling fins 2 where the oil channel 20 is provided is between 0.4-0.6, the oil The heat exchange effect of the high temperature zone of the heater 100 is optimal, so in a preferred example of the present utility model, the flow area of the air flow channel 3 and the area between the two adjacent cooling fins 2 where the oil channel 20 is set The value range of the ratio of the circulation area of the area is: 0.4-0.6.

According to some embodiments of the present utility model, the air inlet includes a side air inlet 210b provided on the outer peripheral wall of the air chamber 21 , and a side air outlet 212 is provided on the inner wall of each air chamber 21 . For example, as shown in part c of FIG. 4, the outer peripheral wall of each air chamber 21 is provided with two side air inlets 210b, and the inner peripheral wall of each air chamber 21 is provided with two side air outlets 212, Thus, the cool air flow in the air chamber 21 is increased. The cold air in the horizontal direction outside the oil heater 100 enters the interior of the air chamber 21 through the side air inlet 210b of the air chamber 21, forming a horizontal air flow channel from the outside to the inside of the air chamber 21, The cold air flows out along the side air outlet 212 on the inner wall of the air chamber 21 to the high temperature area of the oil channel 20 to continue heat exchange and take away the heat in the air chamber 21, thereby reducing the air temperature of the heat sink 2. The temperature in the chamber 21 cools the high temperature area of the oil channel 20 and the edge of the heat sink 2 . It can be understood that the number of side air inlets 210b and side air outlets 212 of each air chamber 21 is not limited thereto, as long as the high temperature area of the oil channel 20 and the edge of the heat sink 2 can be cooled.

Optionally, when there are multiple side air inlets 210b and side air outlets 212, the multiple side air inlets 210b and the multiple side air outlets 212 are spaced vertically on the heat sink 2 respectively distributed. Therefore, the heat dissipation efficiency of the heat dissipation fin 2 is improved, and the heat dissipation capability of the heat dissipation fin 2 is further enhanced. It should be noted here that the vertical direction refers to the direction perpendicular to the paper in FIG. 4 .

Further, in the vertical direction, the height of the side air inlet 210 b is lower than that of the side air outlet 212 . It can be understood that, after the cold air enters the air chamber 21 , its temperature will gradually rise during the flow process and it will naturally flow upward along the air chamber 21 . Thereby, the height of the side air inlet 210b is lower than that of the side air outlet 212, which matches the flow law of the cold air in the air chamber 21, and facilitates the outflow of the cold air entering the air chamber 21. The flow velocity of the air on the inner surface of the air chamber 21 is increased to a certain extent, the heat dissipation capability of the heat sink 2 is strengthened, and the temperature at the edge of the heat sink 2 is reduced.

Optionally, the side air inlet 210b and the side air outlet 212 are respectively formed as rectangular holes extending in the vertical direction. Therefore, the structure is simple and the manufacture is convenient. Of course, it can be understood that the shapes of the side air inlet 210b and the side air outlet 212 are not limited thereto, and the shapes of the side air inlet 210b and the side air outlet 212 can also be selected according to actual conditions, such as the side air inlet The opening 210b and the side air outlet 212 are respectively formed in a circular or oval shape, as long as the heat dissipation capability of the heat sink 2 can be enhanced to a certain extent and the temperature at the edge of the heat sink 2 can be reduced.

Specifically, the inventor found through experiments that when the side air inlet 210b and the side air outlet 212 are both rectangular holes, the aspect ratios of the side air inlet 210b and the side air outlet 212 are both between 6-10 , the heat dissipation effect of the heat sink 2 is optimal, and the temperature drop at the edge of the heat sink 2 is the most obvious. Therefore, in a preferred example of the present invention, the aspect ratios of the side air inlet 210b and the side air outlet 212 both range from 6-10.

In a specific example of the present utility model, as shown in part c in FIG. On both sides of the center line extending in the inner and outer direction of the chamber 21, two side air outlets 212 are provided on the inner side wall of each air chamber 21, and the two side air outlets 212 of each air chamber 21 Distributed on both sides of the portion of the heat sink 2 defining the oil passage 20 .

According to some embodiments of the present utility model, in the length direction of the oil pipe 1, the air inlet includes a side wall air inlet 210c arranged on at least one of the opposite side walls of the air chamber 21, and each air chamber A side air outlet 212 is provided on the inner side wall of the chamber 21 . Therefore, the cold air in the horizontal direction will enter the inside of the air chamber 21 along the side wall air inlet 210c, then flow out of the air chamber 21 along the side air outlet 212 and enter the high temperature area of the oil channel 20 and The heat in the air chamber 21 is taken away. Further reducing the temperature in the air chamber 21 of the heat sink 2 is beneficial to cooling the high temperature area of the oil channel 20 and the edge of the heat sink 2 .

Further, sidewall air inlets 210c are provided on opposite sidewalls of the air chamber 21 . It can be seen that the flow of cold air entering the air chamber 21 from the outside of the oil heater 100 increases, thereby increasing the flow intensity of the air on the inner surface of the heat sink 2, which is beneficial to cooling the high temperature area and the temperature of the oil channel 20. edge of heat sink 2.

Optionally, the same side wall of the air chamber 21 is provided with a plurality of side wall air inlets 210c distributed sequentially from the outside to the inside, and each side wall air inlet 210c is provided with an inward or For the air deflectors 210d extending outward, the air deflectors 210d on the same side wall extend in the same direction. The setting of a plurality of wind deflectors 210d makes the same side wall of the air chamber 21 form a louvered side wall air inlet 210c, and the wind deflectors 210d play a role in cooling the cold air entering the air chamber 21 from the horizontal direction. The role of diversion is achieved, so that the flow of cold air entering the air chamber 21 increases, which is beneficial to cooling the high temperature area of the oil channel 20 and the edge of the heat sink 2 . On the other hand, the cold air in the horizontal direction is easy to form disturbance at the louvered side wall inlet 210c, destroying the air boundary layer at the side wall inlet 210c, thereby improving the air convection at the side wall inlet 210c The heat exchange efficiency improves the heat dissipation capacity of the heat sink 2 and is beneficial to cooling the edge of the heat sink 2 at the same time.

The inventors have found through experiments that when the extension direction of the air deflector 210d is opposite to the flow direction of the gas, and the angle between the air deflector 201d and the side wall of the air chamber 21 is 15°, the air deflector 210d makes the cold air The disturbance effect generated at the side wall inlet 210c is the best, destroying the air boundary layer at the side wall inlet 210c can further improve the air convection heat transfer efficiency at the side wall inlet 210c, and further improve the heat sink 2 cooling capacity.

The inventor also found through experiments that when the extension length of the outwardly extending air deflector 210d does not exceed half of the distance between two adjacent air chambers 21, the distance between the air deflector 210d and the air inlet 210c on the side wall The cold air disturbance effect is most obvious. Therefore, in some preferred examples of the present invention, the angle at which the wind deflector 210 d extends outward is 15 degrees, and the extension length does not exceed half of the distance between two adjacent air chambers 21 .

Specifically, as shown in part c in FIG. 4 - part d in FIG. side. Therefore, after the cold air flows out from the side air outlet 212 of the air chamber 21 , it will flow to the opposite outer wall of the high temperature area of the oil channel 20 , thus improving the cooling effect on the high temperature area.

Optionally, the height of the side wall air inlet 210c is lower than that of the side air outlet 212 . Thereby, it is convenient for the cold air entering the air chamber 21 to flow out from the side air outlet 212, which increases the flow intensity of the air on the inner surface of the air chamber 21 to a certain extent, strengthens the heat dissipation capacity of the heat sink 2, and reduces the The temperature at the edge of the heat sink 2.

In a specific example of the present utility model, as shown in part d of FIG. 4 , in the length direction of the oil pipe 1 , the opposite side walls of each air chamber 21 are provided with side wall air inlets 210c, and each air The same side wall of the chamber 21 is provided with three side wall air inlets 210c distributed sequentially in the direction from the outside to the inside, and each side wall air inlet 210c is provided with an outwardly extending wind deflector 210d, The air deflectors 210d on the same side wall extend in the same direction. The inner side wall of each air chamber 21 is provided with two side air outlets 212, and the two side air outlets 212 of each air chamber 21 are distributed on both sides of the part of the cooling fin 2 that defines the oil outlet channel 20. side.

The structure of the oil heating heater 100 according to a specific embodiment of the utility model will be described in detail below with reference to Fig. 1-Fig. 3 and part c in Fig. 4 . However, it should be noted that the following descriptions are only exemplary, and after reading the following technical solutions of the utility model, the ordinary skilled person can obviously combine or replace or modify the technical solutions or some technical features. Also fall within the scope of protection required by the utility model.

As shown in part c of Fig. 1-Fig. 3 and Fig. 4, the oil heater 100 according to the embodiment of the present utility model includes: two oil pipes 1 and a plurality of cooling fins 2.

The two oil pipes 1 are distributed at intervals in the up and down direction. The two ends of each cooling fin 2 are respectively arranged on two oil pipes 1, and each cooling fin 2 is provided with an oil channel 20 communicating with the two oil pipes 1, and the two side edges of each cooling fin 2 are provided with The air chamber 21 separated by the channel 20.

Each air chamber 21 has an air inlet and an air outlet. The air intakes include four bottom air intakes 210 a provided at the bottom of the air chamber 21 and two side air intakes 210 b provided on the outer peripheral wall of the air chamber 21 . The two side air inlets 210b are distributed on both sides of the centerline of the air chamber 21 extending in the inner-outer direction. The air outlets include a top air outlet 211 arranged at the top of the air chamber 21 and two side air outlets 212 arranged on the inner sidewall of the air chamber 21 . In the vertical direction, the height of the side air inlet 210 b is lower than that of the side air outlet 212 . The side air inlet 210b and the side air outlet 212 have the same area and are both formed as rectangular holes extending in the vertical direction, and the value range of the aspect ratio is 6-10.

The air cavities 21 on the same side of two adjacent cooling fins 2 are spaced apart to define the air channel 3 . In the direction from the outside to the inside, the inner wall of the air flow channel 3 is formed into a curve and the flow area of the air flow channel 3 gradually decreases. The value range of the ratio of the flow area of the air channel 3 to the flow area of the area between two adjacent cooling fins 2 where the oil channel 20 is provided is 0.4-0.6.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and should not be construed as limitations of the present invention, and those of ordinary skill in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (12)

1. a kind of oil Heater warmer, it is characterised in that including：

Two oil pipes, described two oil pipes are spaced apart in the vertical direction；

Multiple fin, the two ends of each fin are respectively provided on described two oil pipes, are set in each described fin There is the asphalt channel connected with described two oil pipes, an at least lateral edges of each fin are provided with and the asphalt channel The air chamber at interval, the air chamber has air inlet and the top gas outlet being located at the top of the air chamber, adjacent The air chamber of two fin be spaced apart limiting air flow channel.

2. oil Heater warmer according to claim 1, it is characterised in that the air inlet includes being located at the air chamber The bottom air inlet of bottom.

3. oil Heater warmer according to claim 1, it is characterised in that on direction from outside to inside, the air stream The circulation area in road is gradually reduced.

4. oil Heater warmer according to claim 1, it is characterised in that the circulation area of the air flow channel with it is adjacent The span of the ratio of the circulation area in the region between two parts of the setting asphalt channel of the fin is：

0.4-0.6。

5. the oil Heater warmer according to any one of claim 1-4, it is characterised in that the air inlet includes being located at institute The sidepiece air inlet of the periphery wall of air chamber is stated, the madial wall of each air chamber is provided with sidepiece gas outlet.

6. oil Heater warmer according to claim 5, it is characterised in that in the vertical direction, the sidepiece air inlet Highly less than the height of the sidepiece gas outlet.

7. oil Heater warmer according to claim 5, it is characterised in that the sidepiece air inlet and the sidepiece gas outlet It is respectively formed as the slot for extending in vertical direction.

8. oil Heater warmer according to claim 7, it is characterised in that the sidepiece air inlet and the sidepiece gas outlet The span of length-width ratio be：6-10.

9. the oil Heater warmer according to any one of claim 1-4, it is characterised in that in the length direction of the oil pipe On, the air inlet includes the side wall air inlet being located on the wall of at least one of opposing sidewalls of air chamber side, often The madial wall of the individual air chamber is provided with sidepiece gas outlet.

10. oil Heater warmer according to claim 9, it is characterised in that be all provided with the opposing sidewalls of the air chamber There is the side wall air inlet.

11. oil Heater warmers according to claim 9, it is characterised in that set on the same side wall of the air chamber There are multiple side wall air inlets being sequentially distributed on direction from outside to inside, be provided with each described side wall air inlet inwardly or court The wind deflector of outer extension, the bearing of trend of the wind deflector of the same side wall is identical.

12. oil Heater warmers according to claim 10, it is characterised in that the sidepiece of each air chamber goes out Gas port be two and be distributed in the fin the part for limiting the asphalt channel both sides.