CN211501056U - Streamlined heat preservation fan - Google Patents
Streamlined heat preservation fan Download PDFInfo
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- CN211501056U CN211501056U CN201922415619.XU CN201922415619U CN211501056U CN 211501056 U CN211501056 U CN 211501056U CN 201922415619 U CN201922415619 U CN 201922415619U CN 211501056 U CN211501056 U CN 211501056U
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- 238000004321 preservation Methods 0.000 title claims abstract description 36
- 239000012774 insulation material Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 238000009413 insulation Methods 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a streamlined heat preservation fan, including the heat preservation frame, the heat preservation frame is located the outside of spiral case, the heat preservation frame includes left frame and right frame, left frame and right frame are the arc, can dismantle on the left frame and be connected with the left side board, can dismantle on the right frame and be connected with the right side board, can dismantle respectively in front of between left frame and the right frame and be connected with preceding curb plate and posterior lateral plate, left side board and right lateral plate are an arc, preceding curb plate and posterior lateral plate are a flat board, the interval between left side board and right lateral plate and the spiral case, the interval between preceding curb plate and the spiral case apron, and the distance between posterior lateral plate and the spiral case backplate are all equal; and heat insulation materials are adhered to the inner walls of the left side plate, the right side plate, the front side plate and the rear side plate. After adopting above-mentioned structure, its beneficial effect is: the heat preservation effect is good.
Description
Technical Field
The utility model belongs to the technical field of the fan is made, specific theory is about a streamlined heat preservation fan.
Background
The fan is a fluid machine, and the pressure of gas is increased and the gas is discharged by means of input mechanical energy. Therefore, the fan needs to be kept warm no matter in energy conservation, noise reduction or heat insulation. Along with the increasingly high requirements of the society on energy conservation, environmental protection and safety, a heat preservation fan with high efficiency, optimized structure and more convenient production needs to be designed.
Chinese patent document CN106015105B discloses a heat preservation fan and an installation method thereof, the heat preservation fan includes a fan heat preservation structure and a volute plate, the volute plate includes a volute plate, a volute back plate and a volute cover plate, and the volute plate is in a spiral line shape. The fan heat insulation structure comprises a heat insulation frame, and the heat insulation frame is arranged on the outer side of the volute. However, the heat preservation fan mainly has the following problems:
(1) the heat-insulating frame is a polygonal body, the left side and the right side of the heat-insulating frame are fixedly connected with a plurality of left side plates and a plurality of right side plates respectively, and the left side plates and the right side plates are flat plates. Therefore, the heat radiation at the positions of the existing heat preservation frame and the volute plate of the fan is not matched in distribution along the molded line of the volute plate, and the thickness between the volute plate and the heat preservation frame is not uniform. When the thickness between the left and right side plates and the worm plate is smaller, the heat preservation effect is poor; when the thickness between the left and right side plates and the worm plate is too large, the waste of heat energy is caused. Therefore, a problem of waste or shortage of heat energy may occur.
(2) The wind collector part is provided with the unilateral channel steel ring, and the unilateral channel steel ring is filled with heat insulation materials, so that the heat insulation effect can be improved. But the joint of the wind collecting part and the volute cover plate is only connected through bolts. Therefore, the leakage problem exists, and the heat preservation effect is influenced.
In addition, current insulation construction, direct through rivet cooperation connection between its left side board, right side board and the heat preservation frame, its kneck leaves the gap, produces easily and leaks to lead to heat energy extravagant.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a streamlined heat preservation fan to solve the poor problem of current fan heat preservation effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a streamlined heat preservation fan, includes heat preservation frame, heat preservation frame locates the outside of spiral case, heat preservation frame includes left frame and right frame, left side frame and right frame are the arc, can dismantle on the left side frame and be connected with the left side board, can dismantle on the right frame and be connected with the right side board, preceding and the back between left side frame and the right frame can dismantle respectively and be connected with preceding curb plate and posterior lateral plate, left side board and right side board are an arc, preceding curb plate and posterior lateral plate are a flat board, interval between left side board and right side board and the spiral case board, interval between preceding curb plate and the spiral case apron and the distance between posterior lateral plate and the spiral case backplate are the same for thickness between heat preservation frame and spiral case board, spiral case backplate and the spiral case apron is the same, thereby makes heat energy even, can not cause extravagant or not enough.
According to the utility model discloses, it has insulation material, for example, heat preservation cotton etc. to paste on the inner wall of left side board, right side board, preceding curb plate and posterior lateral plate.
According to the utility model, the left frame comprises a first front supporting rod, a first rear supporting rod, a first top supporting rod and a first bottom supporting rod, the right frame comprises a second front supporting rod, a second rear supporting rod, a second top supporting rod and a second bottom supporting rod,
the periphery of the left side plate is respectively provided with a blank holder, and the four blank holders of the left side plate are detachably connected with the front side surface of the first front supporting rod, the rear side surface of the first rear supporting rod, the upper surface of the first top supporting rod and the lower surface of the first bottom supporting rod through fixing parts;
and four press edges of the right side plate are detachably connected with the front side surface of the second front supporting rod, the rear side surface of the second rear supporting rod, the upper surface of the second top supporting rod and the lower surface of the second bottom supporting rod respectively through fixing parts.
Furthermore, the left end and the right end of the front side plate are respectively provided with a blank holder, and the two blank holders of the front side plate are detachably connected with the right side surface of the first front supporting rod and the left side surface of the second front supporting rod respectively through fixing pieces;
and the left end and the right end of the rear side plate are respectively provided with a blank holder, and the two blank holders of the rear side plate are detachably connected with the left side surface of the first rear supporting rod and the right side surface of the second rear supporting rod through the fixing part.
According to the utility model discloses, be connected with the chassis on first end support pole and the second end support pole, the chassis is the arc, interval between chassis and the worm plate is the same with interval between preceding curb plate and the spiral case apron, further ensures that the fan keeps warm respond well.
Furthermore, a heat insulation material is adhered to the inner wall of the chassis.
According to the utility model, a first front cross bar and a first rear cross bar are connected between the first bottom support bar and the second bottom support bar, and the first bottom support bar, the second bottom support bar, the first front cross bar and the first rear cross bar form a bottom frame; this structure makes fan structure more firm.
Furthermore, a second front cross rod and a second rear cross rod are connected between the first top support rod and the second top support, and the first top support rod, the second top support, the second front cross rod and the second rear cross rod form a top frame, so that the structure of the fan is firmer;
the first front supporting rod, the second front supporting rod, the first front cross rod and the second front cross rod form a front frame, and the structure enables the fan structure to be firmer;
first back bracing piece, second back bracing piece, first back horizontal pole and second back horizontal pole constitute the rear frame, and this structure makes fan structure more firm.
Furthermore, the left end and the right end of the chassis are respectively provided with a pressing edge, and the two pressing edges are respectively fixed on the front side surface of the first front cross rod and the rear side surface of the first rear cross rod through fixing pieces.
Furthermore, the front frame is provided with a front cover plate of the air collector, and the front cover plate of the air collector is respectively fixed on the first front support rod, the second front support rod, the first front cross rod and the second front cross rod of the front frame through at least four reinforcing ribs, so that the structure of the front side plate is stable and firm.
Furthermore, the front frame is detachably connected with the front side plate, and the rear frame is detachably connected with the rear side plate.
According to the utility model, a circle of first channel steel ring is welded on the periphery of the volute cover plate, a heat insulation material is filled between the outer side of the volute cover plate and the first channel steel ring, a heat insulation cover is coated outside the heat insulation material to ensure the sealing performance and the structural strength of the heat insulation material,
the middle part of the front side plate is provided with a front cover plate of the air collector, the outer edge of the front cover plate of the air collector is welded with a second groove unilateral steel ring, and the first groove steel ring and the second unilateral steel ring are connected through fixing pieces such as bolts; and a gap is reserved between the first channel steel ring and the second unilateral channel steel ring, and a first sealing ring is arranged in the gap, so that zero leakage of connection between the front cover plate and the front side plate of the air collector is ensured, and a good heat insulation effect is ensured.
Furthermore, a third unilateral groove steel ring is welded on the inner edge of the front cover plate of the air collector, heat insulation materials are filled among the front cover plate of the air collector, the second unilateral groove steel ring and the third unilateral groove steel ring, and a second sealing ring is sleeved on the third unilateral groove steel ring, so that the air tightness of connection between the front cover plate of the air collector and the air inlet cylinder is ensured, and the heat insulation effect is good.
Furthermore, a transmission box supporting frame is arranged on the rear frame, and the transmission box supporting frame is respectively fixed on the first rear supporting rod, the second rear supporting rod, the first rear cross rod and the second rear cross rod of the rear frame through at least four reinforcing ribs, so that the structure of the rear side plate is stable and firm.
The utility model discloses a streamlined heat preservation fan, its beneficial effect is:
1. the fan heat insulation structure adopts a streamline structure, and is consistent with the characteristic that the heat radiation at the position of a fan volute plate is distributed along the shape of the volute, so that the structure is more reasonable, and the heat insulation effect is better;
2. the existing frame is changed into an arc square steel pipe and is formed by one-time bending; compared with the prior polygonal frame, the welding points are reduced, and the welding workload can be reduced.
3. The arrangement of the side pressing of the left side plate, the right side plate, the front side plate and the rear side plate can ensure that no gap exists after the side pressing is fixed with the left frame and the right frame, the heat energy leakage cannot be caused, and the energy utilization rate is high.
Drawings
Fig. 1 is a rear view schematic diagram of the streamline thermal insulation fan of the present invention.
Fig. 2 is a schematic front view of the streamlined thermal insulation fan of the present invention.
Fig. 3 is a left side view schematic diagram of the streamline insulation fan of the present invention.
Fig. 4 is a schematic structural view of the left frame.
Fig. 5 is a schematic structural diagram of a volute of the heat preservation fan.
Detailed Description
The streamlined thermal insulation fan of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present embodiment, unless otherwise specified, the terms "left", "right", "front", "rear", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the streamline insulation fan referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, for the utility model discloses a streamlined heat preservation fan, including heat preservation frame, heat preservation frame locates the outside of spiral case 1, as shown in fig. 3 and 5, spiral case 1 includes snail board 11, spiral case backplate 12 and spiral case apron 13, heat preservation frame includes left frame 2 and right frame 3, left frame 2 and right frame 3 are the arc, can dismantle on the left frame 2 and be connected with left side board (not shown in the figure), can dismantle on the right frame 3 and be connected with right side board 4 (as shown in fig. 4), can dismantle respectively in front of between left frame 2 and the right frame 3 and be connected with preceding curb plate 5 and posterior lateral plate 6, left side board and right side board 4 are an arc, preceding curb plate 5 and posterior lateral plate 6 are a flat board, interval between left side board and right side board 4 and the snail board 11, interval between preceding curb plate 5 and the apron 13, And the distances between the rear side plate 6 and the volute casing back plate 12 are equal, so that the thicknesses of the heat-insulating frame, the volute casing back plate 11, the volute casing cover plate 13 and the volute casing back plate are the same, heat energy is uniformly distributed, and waste or deficiency is avoided.
And heat insulation materials 10 are stuck on the inner walls of the left side plate, the right side plate 4, the front side plate 5 and the rear side plate 6, and the heat insulation materials 10 can be heat insulation cotton and the like.
As shown in fig. 4, the left frame 2 includes a first front support bar 21, a first rear support bar 22, a first top support bar 23, and a first bottom support bar 24, and the right frame 3 includes a second front support bar 31, a second rear support bar 32, a second top support bar 33, and a second bottom support bar 34.
As shown in fig. 1 and 2, the periphery of the left side plate is provided with one first pressing edge 71, when the left side plate is installed, the four first pressing edges 71 of the left side plate are respectively overlapped on the front side surface of the first front support bar 21, the rear side surface of the first rear support bar 22, the upper surface of the first top support bar 23 and the lower surface of the first bottom support bar 24, and the four first pressing edges 71 of the left side plate are detachably connected with the front side surface of the first front support bar 21, the rear side surface of the first rear support bar 22, the upper surface of the first top support bar 23 and the lower surface of the first bottom support bar 24 through fixing members (e.g., rivets, etc.).
As shown in fig. 1 and 2, a second pressing edge 72 is provided around each of the right side plate 4. When the foldable bicycle is installed, the four second pressing edges of the right side plate 4 are respectively overlapped on the front side surface of the second front support rod 31, the rear side surface of the second rear support rod 32, the upper surface of the second top support rod 33 and the lower surface of the second bottom support rod 34, and the four second pressing edges 72 of the right side plate 4 are respectively detachably connected with the front side surface of the second front support rod 31, the second rear support rod 32, the upper surface of the second top support rod 33 and the rear side surface of the lower surface of the second bottom support rod 34 through fixing members (such as rivets and the like).
As shown in fig. 3, the left and right ends of the front side plate 5 are respectively provided with a third pressing edge 73, the two third pressing edges of the front side plate are respectively overlapped on the right side surface of the first front support bar 21 and the left side surface of the second front support bar 31, and the two third pressing edges 73 of the front side plate are respectively detachably connected with the right side surface of the first front support bar 21 and the left side surface of the second front support bar 31 through fixing members (e.g., rivets, etc.).
The left end and the right end of the rear side plate 6 are respectively provided with a fourth pressing edge 74, the two fourth pressing edges 74 of the rear side plate are respectively arranged on the left side surface of the first rear supporting rod 22 and the right side surface of the second rear supporting rod 32, and the two fourth pressing edges 74 of the rear side plate are respectively detachably connected with the left side surface of the first rear supporting rod 22 and the right side surface of the second rear supporting rod 32 through fixing parts (such as rivets and the like). The setting of each blank holder on left side board, right side board 4, preceding curb plate 5 and the posterior lateral plate 6 can make it and left frame 2 and right frame 3 fixed back do not have the gap, can not cause heat energy to leak, and energy utilization is high.
The first bottom support rod 24 and the second bottom support rod 34 are connected with a chassis 8, the chassis 8 is an arc-shaped plate, the distance between the chassis 8 and the volute plate 11 is the same as the distance between the front side plate 4 and the volute cover plate 13, and the fan heat preservation effect is further ensured to be good.
And a heat insulation material is adhered to the inner wall of the chassis 8.
As shown in fig. 1 and 2, a first front cross bar 41 and a first rear cross bar 42 are connected between the first bottom support bar 24 and the second bottom support bar 34, and the first bottom support bar 24, the second bottom support bar 34, the first front cross bar 41 and the first rear cross bar 42 form a bottom frame; this structure makes fan structure more firm.
As shown in fig. 3, the left and right ends of the chassis 8 are respectively provided with a fifth pressing edge 75, and the two fifth pressing edges 75 are respectively fixed on the front side of the first front cross bar 41 and the rear side of the first rear cross bar 42 through fixing members.
As shown in fig. 1 and 2, a second front cross bar 43 and a second rear cross bar 44 are connected between the first top support 23 and the second top support 33, and the first top support 23, the second top support 33, the second front cross bar 43 and the second rear cross bar 44 form a top frame, which makes the fan structure more firm.
The first front support bar 21, the second front support bar 31, the first front cross bar 41 and the second front cross bar 43 form a front frame, and the structure makes the fan structure more firm. The front frame is detachably connected with the front side plate 5.
The first rear support bar 22, the second rear support bar 32, the first rear cross bar 42 and the second rear cross bar 44 form a rear frame, and the structure enables the fan structure to be firmer. The rear frame is detachably connected with the rear side plate 6.
As shown in fig. 3, a front wind collector cover 91 is mounted on the front frame, and as shown in fig. 1, the front wind collector cover 91 is fixed to the first front support bar 21, the second front support bar 31, the first front cross bar 41 and the second front cross bar 43 of the front frame by at least four first reinforcing ribs 51. It should be noted that the first reinforcing rib 51 and the wind collector front cover 91, the first front support bar 21, the second front support bar 31, the first front crossbar 41 and the second front crossbar 43 are respectively connected by welding.
As shown in fig. 5, a circle of first channel steel ring 92 is welded on the periphery of the volute cover plate 13, a thermal insulation material 10 is filled between the outer side of the volute cover plate 13 and the first channel steel ring 92, a thermal insulation cover is wrapped on the outer side of the thermal insulation material 10 to ensure the sealing performance and structural strength of the thermal insulation material,
the middle part of the front side plate 5 is provided with a wind collector front cover plate 91, the outer edge of the wind collector front cover plate 91 is welded with a second groove single-side steel ring 93, and the first groove steel ring 92 and the second single-side groove steel ring 93 are connected through fixing parts such as bolts; and a gap 94 is reserved between the first steel ring 92 and the second steel ring 93, and a first sealing ring (not shown in the figure) is arranged in the gap to ensure zero leakage in connection between the front cover plate 91 of the air collector and the front side plate 5, so that a good heat insulation effect is ensured.
A third single-side groove steel ring 95 is welded on the inner edge of the front cover plate 91 of the air collector, heat insulation materials 10 are filled among the front cover plate 91 of the air collector, the second single-side groove steel ring 92 and the third single-side groove steel ring 95, and a second sealing ring (not shown in the figure) is sleeved at the front end of the third single-side groove steel ring 95 to ensure the air tightness of the connection between the front cover plate 91 of the air collector and the air inlet cylinder so as to ensure good heat insulation effect.
The rear frame is provided with a transmission box supporting frame 61, and the transmission box supporting frame 61 is respectively fixed on the first rear supporting rod 22, the second rear supporting rod 32, the first rear cross rod 42 and the second rear cross rod 44 of the rear frame through at least four second reinforcing ribs 62, so that the structure of the rear side plate 6 is stable and firm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the present invention. Such modifications and finishes are also to be considered as the scope of protection of the present invention.
Claims (9)
1. A streamline heat preservation fan is characterized by comprising a heat preservation frame, wherein the heat preservation frame is arranged on the outer side of a volute and comprises a left frame and a right frame, the left frame and the right frame are arc-shaped, a left side plate is detachably connected to the left frame, a right side plate is detachably connected to the right frame, a front side plate and a rear side plate are respectively detachably connected to the front side and the rear side between the left frame and the right frame, the left side plate and the right side plate are both arc-shaped plates, the front side plate and the rear side plate are flat plates, and the distance between the left side plate, the right side plate and the volute is equal to the distance between the front side plate and a volute cover plate, and the distance between the rear side plate and a volute back plate;
and heat insulation materials are adhered to the inner walls of the left side plate, the right side plate, the front side plate and the rear side plate.
2. The streamlined thermal insulation fan of claim 1, wherein said left frame comprises a first front support bar, a first rear support bar, a first top support bar, and a first bottom support bar, and said right frame comprises a second front support bar, a second rear support bar, a second top support bar, and a second bottom support bar,
the periphery of the left side plate is respectively provided with a blank holder, and the four blank holders of the left side plate are detachably connected with the front side surface of the first front supporting rod, the rear side surface of the first rear supporting rod, the upper surface of the first top supporting rod and the lower surface of the first bottom supporting rod through fixing parts;
and four press edges of the right side plate are detachably connected with the front side surface of the second front supporting rod, the rear side surface of the second rear supporting rod, the upper surface of the second top supporting rod and the lower surface of the second bottom supporting rod respectively through fixing parts.
3. The streamlined thermal insulation fan according to claim 2, wherein the left and right ends of the front side plate are respectively provided with a pressing edge, and the two pressing edges of the front side plate are detachably connected with the right side surface of the first front support bar and the left side surface of the second front support bar respectively through a fixing member;
and the left end and the right end of the rear side plate are respectively provided with a blank holder, and the two blank holders of the rear side plate are detachably connected with the left side surface of the first rear supporting rod and the right side surface of the second rear supporting rod through the fixing part.
4. The streamlined thermal insulation fan of claim 2, wherein the first bottom support rod and the second bottom support rod are connected with a chassis, the chassis is an arc-shaped plate, and the distance between the chassis and the volute plate is the same as the distance between the front side plate and the volute cover plate; and the inner wall of the chassis is adhered with a heat-insulating material.
5. The streamlined thermal insulation fan according to claim 2, wherein a first front cross bar and a first rear cross bar are connected between the first bottom support bar and the second bottom support bar, and the first bottom support bar, the second bottom support bar, the first front cross bar and the first rear cross bar form a bottom frame;
a second front cross rod and a second rear cross rod are connected between the first top support rod and the second top support, and the first top support rod, the second top support, the second front cross rod and the second rear cross rod form a top frame;
the first front supporting rod, the second front supporting rod, the first front cross rod and the second front cross rod form a front frame;
the first rear supporting rod, the second rear supporting rod, the first rear cross rod and the second rear cross rod form a rear frame.
6. The streamlined thermal insulation fan according to claim 5, wherein a front cover plate of the wind collector is installed on the front frame, and the front cover plate of the wind collector is fixed to the first front support bar, the second front support bar, the first front cross bar and the second front cross bar of the front frame through at least four reinforcing ribs.
7. The streamlined thermal insulation fan according to claim 6, wherein a circle of first channel steel ring is welded to the periphery of the volute cover plate, a thermal insulation material is filled between the outer side of the volute cover plate and the first channel steel ring, and a thermal insulation cover is wrapped outside the thermal insulation material;
the middle part of the front side plate is provided with a front cover plate of the air collector, the outer edge of the front cover plate of the air collector is welded with a second groove single-side steel ring, and the first groove steel ring and the second single-side steel ring are connected through a fixing piece; and a gap is reserved between the first steel ring and the second unilateral steel ring, and a first sealing ring is arranged in the gap.
8. The streamlined thermal insulation fan according to claim 7, wherein a third single-sided channel steel ring is welded to an inner edge of the front cover plate of the wind collector, a thermal insulation material is filled between the front cover plate of the wind collector, the second single-sided channel steel ring and the third single-sided channel steel ring, and a second sealing ring is sleeved on the third single-sided channel steel ring.
9. The streamlined thermal insulation fan of claim 5, wherein a transmission box supporting frame is disposed on the rear frame, and the transmission box supporting frame is fixed to the first rear supporting rod, the second rear supporting rod, the first rear cross bar and the second rear cross bar of the rear frame through at least four reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922415619.XU CN211501056U (en) | 2019-12-27 | 2019-12-27 | Streamlined heat preservation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922415619.XU CN211501056U (en) | 2019-12-27 | 2019-12-27 | Streamlined heat preservation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211501056U true CN211501056U (en) | 2020-09-15 |
Family
ID=72395977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922415619.XU Expired - Fee Related CN211501056U (en) | 2019-12-27 | 2019-12-27 | Streamlined heat preservation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211501056U (en) |
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2019
- 2019-12-27 CN CN201922415619.XU patent/CN211501056U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |