Finned heat sinks and heaters
By adding a contact sheet set in the slot of the fin heat dissipation device, the heating pipe and the contact sheet set surface are solved, and the low heat exchange efficiency problem caused by the contact between the fin and the electric heating pipeline in the existing electric heater is achieved, and a more efficient heat transfer and defrost effect is achieved.
Patent Information
- Application Number
- CN202420372782.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The fin heat dissipation device in the existing electric heater has a very thin fin, which causes the contact between the fins and the electric heating tube to be in line contact, with a small contact area and low heat exchange efficiency.
A fin heat dissipation device is designed, wherein each fin includes a main body plate and at least one contact sheet set, and the main body plate is provided with a through slot, and the contact sheet set is arranged around the circumferential space of the slot, and is connected with the main body plate to form an accommodating channel to accommodate the heating pipe, so that the heating pipe comes into contact with the contact sheet set surface, and increase the contact area.
The contact area between the fins and the heating pipe is increased through surface contact, the heat transfer efficiency is improved, the defrost efficiency is enhanced, and the efficiency of the heater is ultimately improved.
Smart Images
Figure CN222703498U_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of heat exchange technology, and in particular relates to a fin heat sink and a heater. Background Art
[0002] In air conditioning systems, electric heaters are generally installed in indoor units to improve heating efficiency. Electric heaters are devices that convert electrical energy into thermal energy.
[0003] In the related art, the electric heater includes an electric heating tube with a resistance wire inside and a fin heat sink, the fin heat sink includes a plurality of fins, the plurality of fins are stacked and spaced along the axis of the electric heating tube, each fin is provided with a slot penetrating the two plate surfaces of the fin, and the electric heating tube is directly inserted into the slot of each fin.
[0004] However, since the fins are extremely thin stamped metal sheets, the contact between the fins and the electric heating tubes is line contact, the contact area is small, and the heat exchange efficiency is low. Utility Model Content
[0005] The embodiment of the present disclosure provides a fin heat sink and a heater, which can improve the heat exchange efficiency. The technical solution is as follows:
[0006] An embodiment of the present disclosure provides a fin heat dissipation device, which includes a plurality of fins, and the plurality of fins are arranged in parallel and at intervals; each of the fins includes a main body plate and at least one contact piece group, and the main body plate is provided with at least one slot, and the slot passes through two opposite plate surfaces of the main body plate, and each of the contact piece groups includes a plurality of contact pieces, and the plurality of contact pieces are arranged circumferentially and at intervals around one of the at least one slots and connected to the main body plate, and different contact piece groups surround different slots; wherein the slots in the plurality of main body plates form at least one accommodating channel for accommodating a heating tube, and the extension direction of the accommodating channel is the arrangement direction of the plurality of fins.
[0007] In another implementation of the present disclosure, at least a portion of the inner circumferential wall of the slot is an arc surface, and the arc surface is in contact with the outer circumferential wall of the heating tube; the multiple contact pieces are connected on the arc surface at intervals along the arc length of the arc surface, and the multiple contact pieces are all arc pieces, and the center of the contact piece is concentric with the center of the arc surface of the slot in which it is located.
[0008] In yet another implementation of the present disclosure, the contact piece is in the shape of a pointed tooth, and the tip of the contact piece is away from the main body plate.
[0009] In yet another implementation of the present disclosure, in the extension direction of the accommodating channel, the contact piece in each of the fins is located on the first side of the main body plate.
[0010] In yet another implementation of the present disclosure, between two adjacent fins, a tip of each of the contact pieces contacts the second side of one of the main body plates.
[0011] In another implementation of the present disclosure, each of the slots extends from the side of the main plate to the middle of the main plate, and the bottom wall of the slot is a semicircular arc; multiple contact pieces in the contact piece group corresponding to the slot are connected to the bottom wall of the slot at intervals and extend radially along the bottom wall of the slot.
[0012] In yet another implementation of the present disclosure, the main body plate has a plurality of spaced heat dissipation holes, and the heat dissipation holes penetrate through two opposite plate surfaces of the main body plate.
[0013] In yet another implementation of the present disclosure, among two adjacent fins, the heat dissipation holes on one of the fins are coaxially arranged with the heat dissipation holes on the other fin.
[0014] In yet another implementation of the present disclosure, the fin is a stamped metal structural part.
[0015] In another implementation of the present disclosure, a heater is provided, which includes a heating tube and a fin heat sink, wherein the heating tube is located in an accommodating channel in the fin heat sink, and the heating tube is in contact with a contact sheet in the fin heat sink, and the fin heat sink is the fin heat sink described above.
[0016] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects:
[0017] When the fin heat sink provided by the embodiment of the present disclosure is used in a heater, since the fin heat sink includes a plurality of fins, and each fin includes a main body plate and at least one contact plate group, at least one slot is provided on the main body plate, and the slot passes through two opposite plate surfaces of the main body plate, and the slots in the plurality of main body plates form at least one accommodating channel for accommodating a heating tube, the heating tube in the heater can be accommodated through the accommodating channel formed by the slot, so as to provide an accommodating space for the heating tube.
[0018] Since the multiple contact pieces in the contact piece group in the fin heat dissipation device are arranged at circumferential intervals around one of the at least one slot and are connected to the main plate, different contact piece groups surround different slots. In this way, when the heating tube is accommodated in the accommodating channel, it is bound to contact one by one with the multiple contact pieces in each contact piece group, thereby increasing the contact area between the fin and the heating tube through the contact piece, transforming the previous line contact into surface contact, thereby accelerating the heat transfer efficiency, and also increasing the defrosting efficiency, and ultimately improving the effectiveness of the heater.
[0019] That is to say, in the above fin heat dissipation device, since a contact sheet group is added in the slot, the contact area between the fin and the heating tube can be increased through the surface contact between the contact sheet and the heating tube, thereby improving the efficiency of the heater. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 is a structural schematic diagram of a heater provided by an embodiment of the present disclosure;
[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0023] Figure 3 yes Figure 1 A top view of a portion of the structure along the aa direction;
[0024] Figure 4 yes Figure 1 A schematic diagram of the structure in which the contact piece of one of the fins is not pressed together;
[0025] Figure 5 yes Figure 4 Enlarged view of point B in the middle.
[0026] The symbols in the figure mean the following:
[0027] 1. fin; 10. slot; 11. main board; 12. contact sheet group; 121. contact sheet; 110. heat dissipation hole; 100. heating tube; 101. control joint. DETAILED DESCRIPTION
[0028] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.
[0029] The present disclosure provides a fin heat sink, which is used in a heater. Figure 1 As shown, the fin heat sink comprises a plurality of fins 1, and the plurality of fins 1 are arranged in parallel and at intervals.
[0030] Each fin 1 comprises a main body plate 11 and at least one contact plate group 12. The main body plate 11 is provided with at least one slot 10, and the slot 10 passes through two opposite plate surfaces of the main body plate 11.
[0031] Figure 2 yes Figure 1 The enlarged picture of A in the middle, combined with Figure 2 Each contact sheet group 12 includes a plurality of contact sheets 121. The plurality of contact sheets 121 in the contact sheet group 12 are arranged at intervals around the circumference of at least one slot 10 and connected to the main board 11. Different contact sheet groups 12 surround different slots 10.
[0032] The slots 10 in the plurality of main plates 11 form at least one accommodating channel for accommodating the heating tube, and the extending direction of the accommodating channel is the arrangement direction of the plurality of fins 1 .
[0033] When the fin heat sink provided by the embodiment of the present disclosure is used in a heater, since the fin heat sink includes a plurality of fins 1, and each fin 1 includes a main plate 11 and at least one contact plate group 12, at least one slot 10 is provided on the main plate 11, and the slot 10 passes through two opposite plate surfaces of the main plate 11. The slots 10 in the plurality of main plates 11 form at least one accommodating channel for accommodating a heating tube, the heating tube in the heater can be accommodated through the accommodating channel formed by the slots 10, so as to provide an accommodating space for the heating tube.
[0034] Since the multiple contact pieces 121 in the contact piece group 12 in the fin heat dissipation device are arranged at circumferential intervals around one of the at least one slots 10 and are connected to the main plate 11, different contact piece groups 12 surround different slots 10. In this way, when the heating tube is accommodated in the accommodating channel, it is bound to contact one by one with the multiple contact pieces 121 in each contact piece group 12, thereby increasing the contact area between the fin 1 and the heating tube through the contact piece 121, transforming the previous line contact into surface contact, thereby accelerating the heat transfer efficiency, and also increasing the defrosting efficiency, and ultimately improving the effectiveness of the heater.
[0035] That is to say, in the above fin heat dissipation device, since the contact sheet group 12 is added in the slot 10, the contact area between the fin 1 and the heating tube can be increased through the surface contact between the contact sheet 121 and the heating tube, thereby improving the efficiency of the heater.
[0036] It should be noted that Figure 1 The distance between two adjacent fins on the right side is greater than the distance between two adjacent fins on the left side. This is to show the structure of the fins more clearly. In actual use, Figure 1 The spacing between two adjacent fins shown in FIG.
[0037] Optionally, the heating tube is cylindrical. At least part of the inner wall of the slot 10 is an arc surface, and the arc surface is used to fit the outer wall of the heating tube. Multiple contact sheets 121 are connected to the arc surface at intervals along the arc length of the arc surface, and the multiple contact sheets 121 are all arc sheets, and the center of the contact sheet 121 is concentric with the center of the arc surface of the slot 10 in which it is located.
[0038] In the above implementation, the slot 10 is configured such that at least a portion of the inner wall thereof is an arc surface, so that the arc surface can be matched with the cylindrical heating tube, thereby further increasing the contact area between the heating tube and the fin 1 .
[0039] The contact pieces 121 are all configured as arc pieces, and the center of the contact piece 121 is concentric with the center of the arc surface in the slot 10 in which it is located. In this way, the contact pieces 121 can be arranged at intervals along the outer circumference of the heating tube, thereby ensuring that each contact piece 121 can fit together with the outer wall of the heating tube.
[0040] Of course, the shape of the slot 10 depends entirely on the shape of the heating tube, in order to improve the fit between the slot 10 and the heating tube. Therefore, the slot 10 can also be in other shapes. When the shape of the heating tube is square, the inner wall of the slot 10 is at least partially a planar structure.
[0041] Figure 3 yes Figure 1 The top view of the partial structure along the aa direction, combined with Figure 3 Optionally, the contact piece 121 is in a pointed tooth shape, and the tip of the contact piece 121 is away from the main body plate 11.
[0042] In the above implementation, the contact sheet 121 is configured to be in a pointed tooth shape, so that the distance between two adjacent contact sheets 121 in each contact sheet group 12 gradually increases in the direction away from the main body plate 11, thereby ensuring sufficient heat exchange space to transfer the heat in the heating tube as quickly as possible.
[0043] Of course, the contact sheet 121 may also be in other shapes, such as a triangle, a trapezoid, a fan, etc., as long as there is enough heat exchange space between two adjacent contact sheets 121.
[0044] Optionally, in the extension direction of the accommodating channel, the contact piece 121 in each fin 1 is located on the first side of the main body plate 11 .
[0045] In the above implementation, the accommodating channels between the two fins 1 can be occupied by the contact sheet 121, thereby further increasing the contact area between the contact sheet 121 and the heating tube, thereby improving the heat exchange efficiency.
[0046] Optionally, between two adjacent fins 1 , the tip of each contact piece 121 contacts the second side of one of the main plates 11 .
[0047] In the above implementation, the accommodating channel between the two fins 1 can be occupied by the contact sheet 121, that is, there is no space in the accommodating channel that is not in contact with the fin 1, thereby further increasing the contact area between the contact sheet 121 and the heating tube, thereby improving the heat exchange efficiency.
[0048] Optionally, each slot 10 extends from a side edge of the main body plate 11 to a middle portion of the main body plate 11 , and a bottom wall of the slot 10 is a semicircular arc.
[0049] A plurality of contact pieces 121 in the contact piece group 12 corresponding to the slot 10 are connected to the bottom wall of the slot 10 at intervals and extend along the radial direction of the bottom wall of the slot 10 .
[0050] In the above implementation, each slot 10 is extended from the side of the main plate 11 to the middle of the main plate 11, which facilitates the formation of the slot 10 and also facilitates cutting out a plurality of contact sheets 121 while cutting out the slot.
[0051] Of course, the slot 10 can also be arranged in the middle of the plate surface where the fin 1 is located. In this case, the slot 10 is a closed hole, such as a circular hole, etc. Correspondingly, a plurality of contact sheets 121 are connected to the peripheral wall of the hole where the slot 10 is located at intervals.
[0052] Exemplarily, each contact piece group 12 includes three contact pieces 121 , and the three contact pieces 121 are located at equal intervals in the bottom wall of the semicircular arc of the slot 10 .
[0053] Of course, the number of each contact sheet group 12 may also be other numbers, such as two, four, etc., as long as each contact sheet 121 can be attached to the outside of the heating tube and firmly connected to the main plate 11.
[0054] Figure 4 yes Figure 1 Schematic diagram of the structure in which the contact piece of one fin is not pressed together, combined with Figure 4 Optionally, the main body plate 11 has a plurality of spaced heat dissipation holes 110 , and the heat dissipation holes 110 penetrate two opposite plate surfaces of the main body plate 11 .
[0055] In the above implementation, the plurality of heat dissipation holes 110 are used to diffuse the heat transferred in the fin 1 as quickly as possible, so as to improve the heat dissipation efficiency in the fin heat dissipation device.
[0056] In this embodiment, the heat dissipation holes 110 can be arranged in an array all over the main plate 11 , which can improve the heat dissipation efficiency of the fins 1 .
[0057] Optionally, among two adjacent fins 1 , the heat dissipation holes 110 on one fin 1 are arranged in one-to-one correspondence with the heat dissipation holes 110 on the other fin 1 , and the heat dissipation holes 110 corresponding to each other are coaxially arranged.
[0058] In the above implementation, the multiple heat dissipation holes 110 in the multiple fins 1 can form multiple heat dissipation channels in a one-to-one correspondence, and then the heat transferred in the fins 1 can be diffused as quickly as possible through the multiple heat dissipation channels to improve the heat dissipation efficiency in the fin heat dissipation device.
[0059] Exemplarily, the heat dissipation hole 110 is a circular hole, which is easy to process. Of course, the heat dissipation hole 110 can also be other shapes, such as square, rectangular, etc.
[0060] Optionally, the fin 1 is a stamped metal structural part.
[0061] The so-called stamping structural parts refer to the use of mold pressure to deform the sheet metal to obtain parts with a certain shape, size and performance.
[0062] The fin 1 is processed by a stamping process, which not only improves the processing efficiency but also facilitates the processing.
[0063] Exemplarily, in order to further improve the heat exchange efficiency of the fin 1, the fin 1 is an aluminum structural member.
[0064] The following is a brief introduction to the manufacturing and use process of the fin heat sink provided by the embodiment of the present disclosure:
[0065] When the fin 1 is manufactured, the slot 10 can be cut out while the main plate 11 is formed during stamping, and a plurality of contact pieces 121 connected to the slot are also cut out, but the contact pieces 121 are parallel to the main plate 11 (see Figure 4 and Figure 5 ). Then, the contact piece 121 on each fin 1 is pressed down by a pneumatic top hole device.
[0066] Next, multiple fins 1 are stacked together, and the contact piece 121 is in contact with the main plate 11 of the next adjacent fin 1. Next, the heating tube is installed on the fin 1, and the heating tube is inserted into the corresponding slot 10, and the heating tube and the contact piece 121 are in surface contact.
[0067] On the other hand, the embodiment of the present disclosure also provides a heater, which includes a heating tube 100 and a fin heat sink. The heating tube 100 is located in a receiving channel in the fin heat sink, and the heating tube 100 is in contact with a contact plate 121 in the fin heat sink. The fin heat sink is the fin heat sink mentioned above.
[0068] The above heater has the same beneficial effects as the fin heat sink mentioned above, which will not be described again here.
[0069] In addition, the heater further comprises a control joint 101 , which is electrically connected to the heating tube 100 , and the control joint 101 is located outside the fin heat dissipation device.
[0070] In the above implementation, the control joint 101 is used to control whether the heating tube is turned on.
[0071] Of course, in order to protect the heater, the heater further comprises a shell, the shell covers the outside of the heating tube 100 and the plurality of fins 1, and the control joint 101 is located outside the shell.
[0072] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A fin heat sink, characterized in that: The fin heat dissipation device comprises a plurality of fins (1), wherein the plurality of fins (1) are arranged in parallel and at intervals; Each of the fins (1) comprises a main body plate (11) and at least one contact piece group (12); the main body plate (11) is provided with at least one slot (10); the slot (10) penetrates two opposite plate surfaces of the main body plate (11); each of the contact piece groups (12) comprises a plurality of contact pieces (121); the plurality of contact pieces (121) are arranged at intervals in the circumferential direction around one of the at least one slot (10) and are connected to the main body plate (11); different contact piece groups (12) surround different slots (10); The slots (10) in the plurality of main body plates (11) form at least one accommodating channel for accommodating a heating tube, and the extending direction of the accommodating channel is the arrangement direction of the plurality of fins (1).
2. The fin heat sink according to claim 1, characterized in that: At least a portion of the inner peripheral wall of the slot (10) is an arc surface, and the arc surface fits the outer peripheral wall of the heating tube; The plurality of contact pieces (121) are connected on the arc surface at intervals along the arc length of the arc surface, the plurality of contact pieces (121) are all arc pieces, and the center of the contact piece (121) is concentric with the center of the arc surface of the slot (10) in which it is located.
3. The fin heat sink according to claim 2, characterized in that: The contact piece (121) is in the shape of a pointed tooth, and the tip of the contact piece (121) is away from the main body plate (11) where it is located.
4. The fin heat sink according to claim 3, characterized in that: In the extension direction of the accommodating channel, the contact piece (121) in each of the fins (1) is located on the first side of the main body plate (11) where it is located.
5. The fin heat sink according to claim 4, characterized in that: Between two adjacent fins (1), the tip of each contact piece (121) contacts the second side of one of the main body plates (11).
6. The fin heat sink according to claim 5, characterized in that: Each of the slots (10) extends from a side edge of the main body plate (11) toward a middle portion of the main body plate (11), and a bottom wall of the slot (10) is a semicircular arc; A plurality of contact pieces (121) in the contact piece group (12) corresponding to the slot (10) are connected to the bottom wall of the slot (10) at intervals and extend radially along the bottom wall of the slot (10).
7. The fin heat sink according to any one of claims 1 to 6, characterized in that: The main body plate (11) is provided with a plurality of spaced heat dissipation holes (110), and the heat dissipation holes (110) penetrate through two opposite plate surfaces of the main body plate (11).
8. The fin heat sink according to claim 7, characterized in that: In two adjacent fins (1), the heat dissipation hole (110) on one of the fins (1) is coaxially arranged with the heat dissipation hole (110) on the other fin (1).
9. The fin heat sink according to any one of claims 1 to 6, characterized in that: The fin (1) is a stamped metal structural part.
10. A heater, characterized in that: The heater comprises a heating tube (100) and a fin heat sink, wherein the heating tube (100) is located in a receiving channel in the fin heat sink, and the heating tube (100) is in contact with a contact sheet (121) in the fin heat sink, and the fin heat sink is the fin heat sink described in any one of claims 1 to 9.