CN111442333A - Fin and oil spit of fland room heater - Google Patents
Fin and oil spit of fland room heater Download PDFInfo
- Publication number
- CN111442333A CN111442333A CN202010405140.2A CN202010405140A CN111442333A CN 111442333 A CN111442333 A CN 111442333A CN 202010405140 A CN202010405140 A CN 202010405140A CN 111442333 A CN111442333 A CN 111442333A
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- Prior art keywords
- oil
- path
- oil pocket
- heat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/20—Heat consumers
- F24D2220/2009—Radiators
- F24D2220/2036—Electric radiators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to the technical field of heating, in particular to a radiating fin and an oil heater. A heat sink, comprising: the heat dissipation body is provided with at least two oil paths, the oil paths extend from the lower end to the upper end along the height direction of the heat dissipation body, and heat conduction oil is arranged in the oil paths; the first oil pocket is arranged at the lower end of the heat dissipation body, a heating device is arranged in the first oil pocket and suitable for heating heat conduction oil, the first oil pocket is communicated with the oil way, and the lower end of at least one oil way is connected below the first oil pocket. The lower end of at least one oil way is connected to the lower portion of the first oil pocket, so that heat conduction oil can flow to the lower portion of the first oil pocket when flowing along the oil way, the heat conduction oil flows around the first oil pocket, the temperature of the lower end of the heat dissipation body is improved, and the overall temperature of the surface of the heat dissipation fin is more uniform.
Description
Technical Field
The invention relates to the technical field of heating, in particular to a radiating fin and an oil heater.
Background
The electric oil-filled warmer is more and more popular with people because of the advantages of safety, sanitation, no peculiar smell, no noise, smaller occupied space, long service life, no harmful gas generation and the like. The existing electric oil heater mainly comprises a plurality of radiating fins, metal heating pipes, a temperature control element and the like, wherein the radiating fins are connected with each other through connecting parts at the upper end and the lower end, namely an upper oil bag and a lower oil bag, cavities are formed in the upper oil bag and the lower oil bag, heat conduction oil with higher specific heat capacity is filled in the metal heating pipes, the metal heating pipes are usually installed in the lower oil bags, an oil way is arranged inside each radiating fin, the upper end of the oil way is connected with the lower part of the upper oil bag, the lower end of the oil way is connected with the upper part of the lower oil bag, after the metal heating pipes start to work, the heat conduction oil can be heated up, convection circulation motion is generated in the oil bags and the oil ways of the radiating fins, and the shell material of the radiating fins is generally steel, so that the heat of the heat conduction oil can be transferred. However, the convection circulation motion of the heat conduction oil has the tendency that the heating oil moves upwards and the cooling oil moves downwards, and the surrounding air also has the tendency that the hot air moves upwards and the cold air moves downwards due to the natural convection phenomenon, so that the temperature of the shell around the lower oil pocket of the radiating fin is lower, and the integral temperature uniformity of the surface of the radiating fin is poorer.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect of poor integral temperature uniformity of the surface of the radiating fin of the electric oil heater in the prior art, so that the radiating fin and the oil heater with improved integral temperature uniformity are provided.
A first aspect of the present invention provides a heat sink comprising:
the heat dissipation body is provided with at least two oil paths, the oil paths extend from the lower end to the upper end along the height direction of the heat dissipation body, and heat conduction oil is arranged in the oil paths;
the first oil pocket is arranged at the lower end of the heat dissipation body, a heating device is arranged in the first oil pocket and suitable for heating the heat conduction oil, the first oil pocket is communicated with the oil way, and the lower end of at least one oil way is connected below the first oil pocket.
The oil circuit at least comprises three paths, namely a first path, a second path and a third path, wherein the lower ends of the second path and the third path are connected below the first oil pocket.
The second path and the third path are respectively arranged at two sides of the first oil pocket.
Along the width direction of the heat dissipation body, the extension width of the first path is greater than the extension widths of the second path and the third path.
The extension widths of the second path and the third path are the same and are half of the extension width of the first path.
The heat sink further includes:
and the second oil pocket is arranged below the first oil pocket and communicated with the first oil pocket through the oil path.
The number of the second oil pockets is at least two, and the second oil pockets are respectively arranged on the left side and the right side of the first oil pocket.
The extending length of the second oil pocket is equal to the extending length of the first oil pocket along the direction vertical to the height of the heat radiation body.
The radiating fin further comprises a third oil pocket which is arranged at the upper end of the radiating body and communicated with the upper end of the oil way.
The invention provides an oil heater, which comprises at least two radiating fins.
The technical scheme of the invention has the following advantages:
1. according to the radiating fin provided by the invention, the first oil pocket is arranged at the lower end of the radiating body, the heating device is arranged in the first oil pocket, high-temperature heat conduction oil can flow upwards when the heating device heats the heat conduction oil in the oil way, the lower end of at least one oil way is connected to the lower part of the first oil pocket, so that the heat conduction oil can flow to the lower part of the first oil pocket when flowing along the oil way, the heat conduction oil flows around the first oil pocket, the temperature of the lower end of the radiating body is improved, and the overall temperature of the surface of the radiating fin is more uniform.
2. According to the radiating fin provided by the invention, the lower ends of more oil ways are connected to the lower part of the first oil pocket, so that more heat conduction oil can flow to the periphery of the first oil pocket, the temperature of the lower end of the radiating body is further improved, and the integral temperature uniformity is improved.
3. According to the radiating fin provided by the invention, along the width direction of the radiating fin, the extension width of the first path is set to be larger than the extension widths of the second path and the third path, so that the on-way resistance loss of the first path is smaller, heat conducting oil heated by the heating device can flow upwards along the first path and then flows downwards through the second path and the third path after exchanging heat with the radiating body, and the temperature distribution of the left side and the right side of the radiating fin is more symmetrical.
4. According to the radiating fin provided by the invention, the extension widths of the second path and the third path are set to be the same and are half of the extension width of the first path, so that the radiating fin is more attractive while the temperature distribution of the left side and the right side of the radiating fin is more symmetrical.
5. According to the radiating fin provided by the invention, the second oil pocket is arranged below the first oil pocket and is communicated with the first oil pocket through the oil way, so that part of heat conduction oil can be stored in the second oil pocket, and the temperature of the lower end of the radiating body is further improved.
6. According to the radiating fin provided by the invention, the extending length of the second oil pocket is set to be equal to that of the first oil pocket along the direction vertical to the height of the radiating body, so that when a plurality of radiating fins are connected in series, for example, on a heater, the first oil pocket and the second oil pocket of the adjacent radiating fin can be respectively communicated, the lower end of the radiating body can store more heat conducting oil, the temperature uniformity of the surface of the heater is further ensured, and the integral strength of the radiating fin can be enhanced.
7. According to the radiating fin provided by the invention, the third oil pocket is arranged at the upper end of the radiating body and is communicated with the upper end of the oil way, so that high-temperature heat conduction oil can be gathered in the third oil pocket after moving upwards instead of directly flowing downwards, the temperature above the radiating fin is ensured, and the heating effect is ensured.
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 description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a first embodiment of a heat sink according to the present invention;
FIG. 2 is a side view of a first version of the heat sink of the present invention;
FIG. 3 is a schematic view illustrating the flow of heat transfer oil according to a first embodiment of the heat sink of the present invention;
FIG. 4 is a partial schematic view of a first embodiment of a heat sink in accordance with the present invention;
FIG. 5 is a side view of a second version of the heat sink of the present invention;
FIG. 6 is a schematic structural view of a third embodiment of the heat sink of the present invention;
FIG. 7 is a schematic structural diagram of a first mode of the oil heater of the present invention;
fig. 8 is a schematic structural diagram of a second mode of the oil heater of the present invention.
Description of reference numerals:
1-a heat dissipation body; 2-a first oil pocket; 3-the first route; 4-the second way; 5-the third path; 6-second oil pocket; 7-third oil pocket.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 6, the present embodiment provides a heat sink including: a heat dissipating body 1 and a first oil pocket 2.
The heat dissipation body 1 is provided with at least two oil paths, the oil paths extend from the lower end to the upper end along the height direction of the heat dissipation body 1, and heat conduction oil is arranged in the oil paths; the lower extreme of heat dissipation body 1 is located to first oil pocket 2, is equipped with heating device in the first oil pocket 2, is suitable for and heats the conduction oil, and first oil pocket 2 and oil circuit intercommunication, and the lower extreme of at least one oil circuit is connected in the below of first oil pocket 2.
Through locating the lower extreme of heat dissipation body 1 with first oil pocket 2, be equipped with heating device in the first oil pocket 2, when heating device heated the conduction oil in the oil circuit, the conduction oil of high temperature can upwards flow, through the below of connecting the lower extreme of at least one oil circuit at first oil pocket 2, make the conduction oil along the oil circuit can flow to the below of first oil pocket 2 when flowing, make all there is the conduction oil to flow around first oil pocket 2, the temperature of 1 lower extreme of heat dissipation body has been improved, make the bulk temperature on fin surface more even.
The heat sink in this embodiment further includes a third oil pocket 7 disposed at the upper end of the heat sink body 1 and communicated with the upper end of the oil passage. Through setting up third oil pocket 7 in the upper end of heat dissipation body 1, third oil pocket 7 communicates with the upper end of oil circuit for can gather in third oil pocket 7 after the conduction oil upward movement of high temperature, rather than direct downward flow, guaranteed the temperature of fin top, in order to guarantee the heating effect. As an alternative embodiment, the heat transfer oil may flow upward along one oil path to the upper end and then flow downward along the other oil path without providing the third oil pocket 7.
The oil circuit is specifically provided with a plurality of types, as shown in fig. 1, the oil circuit in this embodiment includes three paths, a first path 3 disposed in the middle, and a second path 4 and a third path 5 respectively disposed at two sides of the first path 3, wherein a lower end of the first path 3 is connected to a top of the first oil pocket 2, an upper end of the first path 3 is connected to a bottom of the third oil pocket 7, along a width direction of the heat dissipation body 1, the second path 4 is disposed at a left side of the first oil pocket 2, one end of the second path 4 is connected to a bottom of the third oil pocket 7, the other end of the second path 4 is connected to a bottom of the first oil pocket 2, the third path 5 is disposed at a right side of the first oil pocket 2, one end of the third path 5 is connected to a bottom of the third oil pocket 7, and the other. The lower end of more oil ways is connected to the lower end of the first oil pocket 2, so that more heat conducting oil can flow to the periphery of the first oil pocket 2, the temperature of the lower end of the heat dissipation body 1 is further improved, and the integral temperature uniformity is improved. As a changeable implementation manner, the oil path may be set to two paths, wherein one path of the oil path allows the high-temperature heat transfer oil to flow upwards, and the other path allows the heat transfer oil after heat exchange to flow downwards, so as to complete circulation of the heat transfer oil; or the oil path is set to be four paths, two paths of heat conducting oil are used for flowing upwards, and two paths of heat conducting oil are used for flowing downwards.
As shown in fig. 3, in the width direction of the heat dissipation body 1 (the horizontal direction in fig. 3), i.e., in the direction perpendicular to the height direction of the heat dissipation body 1, the extension width of the first path 3 is greater than the extension widths of the second path 4 and the third path 5, and the extension widths of the second path 4 and the third path 5 are the same and are half of the extension width of the first path 3. The extension width of the first path 3 is set to be larger than the extension widths of the second path 4 and the third path 5, so that the on-way resistance loss of the first path 3 is smaller, the heat conduction oil heated by the heating device can flow upwards along the first path 3 and then flows downwards through the second path 4 and the third path 5 after exchanging heat with the heat dissipation body, and the temperature distribution of the left side and the right side of the heat dissipation sheet is more symmetrical. The extending widths of the second path 4 and the third path 5 are set to be the same and are half of the extending width of the first path 3, so that the temperature distribution of the left side and the right side of the radiating fin is more symmetrical, and the radiating fin is more attractive. As a changeable implementation manner, the extending width of the second path 4 may be different from the extending width of the third path 5, or the extending width of the first path 3 is not the maximum, or the extending widths of the first path 3, the second path 4 and the third path 5 may be specifically set according to actual needs.
As shown in fig. 1, the heat sink in this embodiment further includes two second oil pockets 6, which are disposed below the first oil pocket 2 and disposed on the left and right sides of the first oil pocket 2, respectively, the first oil pocket 2 and the second oil pockets 6 form a triangular shape, wherein one second oil pocket 6 is communicated with the first oil pocket 2 and the third oil pocket 7 through the second path 4, and the other second oil pocket 6 is communicated with the first oil pocket 2 and the third oil pocket 7 through the third path 5. Through set up second oil pocket 6 in the below of first oil pocket 2, second oil pocket 6 passes through the oil circuit and communicates with first oil pocket 2 for can store partly conduction oil in the second oil pocket 6, further improve the temperature of heat dissipation body 1 lower extreme. As an alternative embodiment, as shown in fig. 6, the second oil pocket 6 is not provided, but the second path 4 and the third path 5 only realize that the heat transfer oil flows to the lower part of the first oil pocket 2, for example, the first path 3, the second path 4 and the third path 5 jointly form a "W" shape at the first oil pocket 2. As a convertible embodiment, one, or three or more second oil pockets 6 may be provided, or the second oil pockets 6 may be provided corresponding to the oil passages.
In the direction perpendicular to the height of the heat dissipating body 1, i.e., in the thickness direction of the heat dissipating body 1, as shown in fig. 2 and 7, the extension length of the second oil pocket 6 in the present embodiment is equal to the extension length of the first oil pocket 2, and also equal to the extension length of the third oil pocket 7. The extension length of the second oil pocket 6 is set to be equal to that of the first oil pocket 2 and the third oil pocket 7, so that when a plurality of radiating fins are connected in series, if the radiating fins are arranged on the warmer, the first oil pocket 2, the second oil pocket 6 and the third oil pocket 7 of the adjacent radiating fins can be communicated respectively, more heat conducting oil can be stored at the lower end of the radiating body 1, the temperature uniformity of the surface of the warmer is further guaranteed, and the overall strength of the radiating fins can be enhanced. As an alternative embodiment, as shown in fig. 5 and 8, along the direction perpendicular to the height of the heat dissipating body 1, the extension length of the second oil pocket 6 may be smaller than the extension length of the first oil pocket 2, and the extension length of the first oil pocket 2 may be the same as the extension length of the third oil pocket 7, that is, when a plurality of fins are connected in series, the first oil pocket 2 and the third oil pocket 7 of adjacent fins are respectively communicated, and the second oil pockets 6 are independent from each other.
The volume of the third oil pocket 7 in this embodiment is larger than the volume of the first oil pocket 2, and the volume of the first oil pocket 2 is larger than the volume of the second oil pocket 6. The arrangement can save space, so that the integral volume of the radiating fin is smaller, and the cost is reduced. As a variable embodiment, the volumes of the first oil pocket 2, the second oil pocket 6, and the third oil pocket 7 may be the same, or the volumes of the first oil pocket 2 and the third oil pocket 7 may be the same and larger than the volume of the second oil pocket 6.
When the first oil pocket 2, the second oil pocket 6, the third oil pocket 7 and the oil path of the radiating fin are filled with heat conduction oil, the heat conduction oil can be filled to the lower part of the central position of the third oil pocket 7 and can not be filled, and certain spaces are required to be reserved to realize the heat expansion and cooling and convection circulation motion of the heat conduction oil. After the heating device in the first oil pocket 2 starts to work, the heat conduction oil can be heated up immediately, convection circulation movement is further generated, the heated heat conduction oil can move upwards through the first path 3 from the first oil pocket 2, enters the third oil pocket 7, then moves downwards through the second path 4 and the third path 5, enters the second oil pocket 6, and returns to the first oil pocket 2 through the communicated oil path, the heat of the heat conduction oil can be transmitted to the heat dissipation body 1 through heat conduction, and is transmitted to the surrounding air through natural convection and radiation, and the heating effect is achieved.
In order to enhance the convection circulation motion of the heat conduction oil, a small amount of heat conduction oil is prevented from being retained at the corners in the convection circulation motion process, and in consideration of aesthetic property, the first oil pocket 2, the second oil pocket 6 and the third oil pocket 7 in the embodiment can be made into drum-shaped structures, that is, the cross sections of the two ends of the oil pockets are circles with small radius, and the circles are closer to the middle, and the radius of the circles is larger. Because the side surface of the drum-shaped oil pocket is inclined, the heat conduction oil can slide along the inclined wall surface in the moving process, and a small amount of heat conduction oil can be prevented from being retained at a corner or an included angle.
As shown in fig. 7-8, the second aspect of the present invention provides an oil heater, comprising at least two cooling fins as described above.
Specifically, the oil-filled heater in this embodiment is an electric oil-filled heater, wherein 13 cooling fins are provided, the cooling body 1 is made of steel, the heating device is a metal heating pipe, and since the first oil pockets 2 of adjacent cooling fins are communicated with each other, the metal heating pipe can be provided as one, and the metal heating pipe traverses all the cooling fins. As an alternative embodiment, the number of fins may be specifically set according to actual needs. As an alternative embodiment, the heat dissipation body 1 may be made of other materials that are easily heat conductive. As an alternative embodiment, a plurality of metal heating pipes may be provided, and each metal heating pipe may be fixed to an end of a cavity formed by the first oil pockets 2 communicating with each other.
The heated heat conduction oil can move upwards to enter the third oil pocket 7, so the third oil pocket 7 can store a large amount of heat conduction oil, peripheral air can also show the trend that hot air moves upwards and cold air moves downwards due to the natural convection phenomenon, the temperature of the heat dissipation body 1 around the third oil pocket 7 is higher, the temperature of the heat dissipation body 1 around the first oil pocket 2 is lower, the integral temperature uniformity of the surface of the radiating fin is poor, after the second oil pocket 6 is arranged, the heated heat conduction oil can enter the second oil pocket 6 through the second path 4 and the third path 5, a certain amount of heat conduction oil can be stored in the second oil pocket 6, the temperature of the heat dissipation body 1 around the first oil pocket 2 can be further improved, the temperature uniformity of the integral surface of the radiating fin is further improved, and the heating effect of the 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 therefrom are within the scope of the invention.
Claims (10)
1. A heat sink, comprising:
the heat dissipation device comprises a heat dissipation body (1), wherein at least two oil paths are arranged on the heat dissipation body (1), the oil paths extend from the lower end to the upper end along the height direction of the heat dissipation body (1), and heat conduction oil is arranged in the oil paths;
the heat dissipation body (1) is arranged on the lower end of the heat dissipation body (1), a heating device is arranged in the first oil pocket (2) and suitable for heating the heat conduction oil, the first oil pocket (2) is communicated with the oil way, and the lower end of at least one oil way is connected to the lower portion of the first oil pocket (2).
2. The heat sink according to claim 1, wherein the oil path comprises at least three paths, namely a first path (3), a second path (4) and a third path (5), and the lower ends of the second path (4) and the third path (5) are connected below the first oil pocket (2).
3. A fin as claimed in claim 2, wherein said second path (4) and said third path (5) are provided on both sides of said first oil pocket (2), respectively.
4. A fin as claimed in claim 2, wherein the first path (3) has an extension width greater than the extension widths of the second path (4) and the third path (5) in the width direction of the heat dissipating body.
5. A heat sink as claimed in claim 4, characterized in that the second (4) and third paths (5) have the same extension and are half the extension of the first path (3).
6. The heat sink as recited in any one of claims 1 to 5, further comprising:
and the at least one second oil pocket (6) is arranged below the first oil pocket (2), and the second oil pocket (6) is communicated with the first oil pocket (2) through the oil way.
7. The fin according to claim 6, wherein the number of the second oil pockets (6) is at least two, provided on the left and right sides of the first oil pocket (2), respectively.
8. A fin as claimed in claim 6, wherein the extension length of said second oil pocket (6) is equal to the extension length of said first oil pocket (2) in a direction perpendicular to the height of said heat dissipating body (1).
9. A fin according to any one of claims 1 to 5, further comprising a third oil pocket (7) provided at an upper end of said heat radiating body (1) and communicating with an upper end of said oil passage.
10. An oil-filled warmer, characterized by comprising at least two fins as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010405140.2A CN111442333A (en) | 2020-05-13 | 2020-05-13 | Fin and oil spit of fland room heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010405140.2A CN111442333A (en) | 2020-05-13 | 2020-05-13 | Fin and oil spit of fland room heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111442333A true CN111442333A (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010405140.2A Pending CN111442333A (en) | 2020-05-13 | 2020-05-13 | Fin and oil spit of fland room heater |
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| Country | Link |
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| CN (1) | CN111442333A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503625A (en) * | 2020-12-09 | 2021-03-16 | 珠海格力电器股份有限公司 | Heat radiating fin and oil heater |
-
2020
- 2020-05-13 CN CN202010405140.2A patent/CN111442333A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503625A (en) * | 2020-12-09 | 2021-03-16 | 珠海格力电器股份有限公司 | Heat radiating fin and oil heater |
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