CN220453733U - Lower air inlet combustion stove and integrated stove comprising same - Google Patents
Lower air inlet combustion stove and integrated stove comprising same Download PDFInfo
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- CN220453733U CN220453733U CN202322054846.0U CN202322054846U CN220453733U CN 220453733 U CN220453733 U CN 220453733U CN 202322054846 U CN202322054846 U CN 202322054846U CN 220453733 U CN220453733 U CN 220453733U
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- air inlet
- air
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- panel
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- 238000002485 combustion reaction Methods 0.000 title abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 39
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 230000003993 interaction Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000005855 radiation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a lower air inlet combustion stove and an integrated stove comprising the same, wherein the lower air inlet combustion stove comprises a lower air inlet combustor, a stove shell and a heat dissipation fan, the stove shell is provided with a chassis and a panel, the heat dissipation fan and the air inlet part of the lower air inlet combustor are arranged in the stove shell, the stove shell is provided with a shielding cover, an air inlet channel and an air outlet channel, the shielding cover is surrounded to form a containing cavity, the heat dissipation fan is positioned in the containing cavity, the containing cavity is separated from the air inlet part of the lower air inlet combustor, the upper surface of the panel is provided with an air inlet of the air inlet channel, the stove shell is provided with an air outlet of the air outlet channel, the air outlet of the air outlet channel is in fluid communication with the air outlet of the heat dissipation fan, and the air inlet of the air inlet channel is in fluid communication with the air inlet of the heat dissipation fan. Because isolation cover, air inlet channel and air-out channel's isolation, the air enters into exhaust in-process and does not produce direct interaction with chassis inside air, and the negative pressure that the radiator fan during operation formed is kept apart by the isolation cover, and the primary air that lower air inlet combustor penetrated does not receive the interference.
Description
Technical Field
The utility model relates to a lower air inlet combustion stove and an integrated stove comprising the same.
Background
The existing split type integrated kitchen is relatively closed in the chassis, the heat dissipation is relatively poor, the heat dissipation fan is generally arranged in the chassis, the temperature of the chassis is reduced through interaction of the heat dissipation fan and air inside the chassis, the possibility that a glass panel covered on the chassis bursts is reduced, and meanwhile the influence of the temperature rise of the chassis on components arranged on the chassis is reduced.
The heat dissipation fan is arranged inside the chassis, so that negative pressure can be formed inside the chassis in the operation process of the heat dissipation fan. If the kitchen range adopts the upper air inlet burner, the influence of the operation of the heat dissipation fan on the upper air inlet burner is isolated, but the upper air inlet burner has the problem of low combustion efficiency compared with the lower air inlet burner. If the stove adopts the lower air inlet burner, the air inlet part of the lower air inlet burner can be influenced by the negative pressure formed in the chassis by the heat dissipation fan, the air injection can be disturbed in the operation of the heat dissipation fan, and particularly, primary air can flow to the vicinity of the heat dissipation fan when the burner is injected, so that the primary air injection is insufficient, and the combustion is influenced.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a lower air inlet combustion stove and an integrated stove comprising the same.
The utility model solves the technical problems by the following technical scheme:
the utility model provides a lower air inlet burning stove, includes lower air inlet combustor, stove shell and radiator fan, and the stove shell has upper portion open-ended chassis and lid closes the panel on the opening of chassis, radiator fan with the inlet portion of lower air inlet combustor all set up in the stove shell, the stove shell still has cage, inlet channel and air-out passageway, the cage encloses to establish and forms the appearance chamber, radiator fan is located hold the intracavity, hold the chamber with the inlet portion of lower air inlet combustor separates, the upper surface of panel has been seted up inlet channel's air intake, set up on the stove shell outlet of air-out passageway, outlet channel's air outlet with radiator fan's air outlet phase fluid intercommunication, inlet channel's air intake with radiator fan's air intake phase fluid intercommunication.
In this scheme, take above-mentioned structural style, when cooling fan work, the air gets into by the air intake of air inlet channel, and in entering into the cage encloses the appearance intracavity of establishing formation through the air inlet channel, through the cooling fan in holding the chamber afterwards, outwards discharges through the air-out passageway at last to take away the heat that the cooking utensils during operation formed in the chassis inside. Because isolation cover, air inlet passageway and air-out passageway keep apart, air is entered into last air outlet exhaust in-process by the air intake and is not produced direct interaction with the primary air that lower air inlet combustor was drawn in chassis inside, and the negative pressure that forms when the cooling fan work is isolated by the isolation cover, and the negative pressure that forms when the cooling fan work is guided to the panel top by the air inlet passageway for the primary air that lower air inlet combustor working process was drawn in chassis inside can not receive the interference.
Further, the cross-sectional shape of cage is C shape, the C shape opening of cage down laminate set up in on the interior bottom surface of chassis, the cage with the chassis encloses jointly and establishes the formation hold the chamber.
In this scheme, adopt above-mentioned structural style, the cross-sectional shape of cage is C shape, non-enclosed construction, the opening down and laminating set up in on the interior bottom surface of chassis and with the chassis encloses jointly to establish and form hold the chamber for cage below chassis part can directly accept cooling of radiator fan, has reduced the part manufacturing cost of cage simultaneously.
Further, the isolation cover is horizontally arranged on the inner bottom surface of the chassis and is positioned at the central axis position in the length direction of the panel.
In this scheme, take above-mentioned structural style, the cage level sets up on the interior bottom surface of chassis, has more effectually utilized the inside space of chassis, through setting up the cage in panel length direction's axis position department for the cooling effect of cooling fan can more radiation to the nearby component of cage, thereby improves radiating efficiency.
Further, the air inlet channel and the air outlet channel are symmetrically distributed along the central axis of the length direction of the panel.
In this scheme, adopt above-mentioned structural style, through setting up air inlet channel and air-out passageway along panel length direction's axis symmetric distribution for during operation of cooking utensils, the heat that the inside length direction both sides of reduction chassis that air inlet channel and air-out passageway can be better formed improves radiating efficiency.
Further, the cross section from the air inlet channel to the air inlet of the air inlet channel is gradually enlarged, and the cross section from the air outlet channel to the air outlet of the air outlet channel is gradually enlarged.
In the scheme, by adopting the structural form, the cross section of the air inlet from the air inlet channel to the air inlet of the air inlet channel is gradually enlarged, and the cross section of the air outlet from the air outlet channel to the air outlet of the air outlet channel is gradually enlarged, so that the process that air enters the air inlet channel from the outside of the panel and the process that air is discharged from the air outlet channel to the outside of the panel are smoother.
Further, an air outlet of the air outlet channel is formed in the upper surface of the panel.
In the scheme, the air outlet is arranged on the upper surface of the panel in the structural form, so that heat on the panel near the air outlet can be taken away simultaneously when air is discharged to the outside of the panel from the air outlet, and the possibility of bursting glass on the panel is reduced.
Further, the air outlet of the air outlet channel is adjacent to the air inlet of the air inlet channel, and the air outlet of the air outlet channel and the air inlet of the air inlet channel are rectangular.
In this scheme, adopt above-mentioned structural style, the air outlet of air-out passageway and the adjacent convenience panel upper surface of air intake of air inlet passageway open in manufacturing process, improved production efficiency, the air outlet of air-out passageway and the air intake of air inlet passageway are the rectangle and make the entering and the discharge of air more smooth and easy, have improved radiating efficiency.
Further, two knobs are arranged on the panel, the knobs are located at one end of the length direction of the panel, and an air inlet of the air inlet channel and an air outlet of the air outlet channel are located at the other end of the length direction of the panel and symmetrically distributed along the central axis of the length direction of the panel.
In this scheme, adopt above-mentioned structural style, panel length direction one end is provided with two knobs and is the conventional overall arrangement of top of a kitchen range top panel, accords with user's operation mode, sets up air intake and the air outlet of air inlet passageway at panel length direction's the other end and follows panel length direction's axis symmetric distribution more convenient chassis inside air inlet passageway and the air outlet passageway's that set up at panel upper surface opening, has improved air admission and exhaust efficiency.
Further, the heat dissipation fan comprises a volute cover and an impeller, the volute cover is horizontally arranged on the inner bottom surface of the chassis and is positioned in the containing cavity formed by the isolation cover, an air inlet of the heat dissipation fan is formed in an opening of the top wall of the volute cover, an air outlet of the heat dissipation fan is formed in an opening of the side wall of the volute cover, an air outlet of the heat dissipation fan is in fluid communication with the air outlet channel, and an air inlet of the heat dissipation fan is in fluid communication with the air inlet channel.
In the scheme, the air enters the accommodating cavity of the isolation cover from the air inlet, enters the heat dissipation fan from the air inlet of the heat dissipation fan formed by the opening of the top wall of the volute cover, enters the air outlet of the heat dissipation fan formed by the opening of the side wall of the volute cover, enters the air outlet channel, and is finally discharged from the air outlet of the air outlet channel, so that the air inlet and discharge efficiency is high.
Further, the volute cover and the air outlet channel are integrally formed, and the isolation cover and the air inlet channel are integrally formed.
In this scheme, adopt above-mentioned structural style, cage and air inlet passageway integrated into one piece, radiator fan's spiral case cover and air-out passageway integrated into one piece have improved radiator fan, air inlet passageway and air-out passageway's closure, avoid the air to spill to the chassis inside and the interference to draw the air after getting into by the panel outside, and integrated into one piece's structure has also reduced the cost of part production simultaneously, has improved the efficiency of part production.
The utility model also provides an integrated kitchen range which adopts the lower air inlet burner in any embodiment.
The utility model has the positive progress effects that: this lower air inlet burning kitchen and contain its integrated kitchen because isolation cover, air inlet passageway and air-out passageway's isolation, air enter into last air outlet exhaust in-process by the air intake and do not produce direct interaction with the primary air that lower air inlet combustor was drawn in the chassis inside, and the negative pressure that the radiator fan during operation formed is isolated by the isolation cover, and the negative pressure that the radiator fan during operation formed is guided to the panel top by the air inlet passageway for the primary air that lower air inlet combustor working process was drawn in the chassis inside can not receive the interference.
Drawings
Fig. 1 is a schematic structural view 1 of a lower air intake burner according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view 2 of a lower air intake burner according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a lower air intake burner according to an embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of the isolation cover, the volute cover, the air inlet channel and the air outlet channel according to the embodiment of the utility model.
Fig. 5 is a schematic structural diagram of an isolation cover and an air inlet channel according to an embodiment of the present utility model.
Fig. 6 is a schematic view of the structure of the volute casing and the air outlet channel according to the embodiment of the utility model.
Reference numerals illustrate:
lower air intake burner 1
Kitchen range case 2
Chassis 21
Panel 22
Heat radiation fan 3
Impeller 31
Volute casing 32
Air inlet 33 of heat radiation fan
Air outlet 34 of heat radiation fan
Isolation cover 4
Cavity 41
Air inlet channel 5
Air outlet channel 6
Air inlet 51 of air inlet channel
Air outlet 61 of air outlet channel
Knob 7
Detailed Description
The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
The utility model provides a lower air inlet combustion stove which comprises a lower air inlet combustor 1, a stove shell 2 and a heat radiation fan 3, wherein the stove shell 2 is provided with a chassis 21 with an upper opening and a panel 22 covered on the opening of the chassis 21, the heat radiation fan 3 and an air inlet part of the lower air inlet combustor 1 are arranged in the stove shell 2, the stove shell 2 is also provided with a separation cover 4, an air inlet channel 5 and an air outlet channel 6, the separation cover 4 and the chassis 21 are jointly surrounded to form a containing cavity 41, the heat radiation fan 3 is positioned in the containing cavity 41, the containing cavity 41 is separated from the air inlet part of the lower air inlet combustor 1, the upper surface of the panel 22 is provided with an air inlet 51 of the air inlet channel, the stove shell 2 is provided with an air outlet 61 of the air outlet channel, the air outlet 61 of the air outlet channel is in fluid communication with the air outlet 34 of the heat radiation fan, and the air inlet 51 of the air inlet channel is in fluid communication with the air inlet 33 of the heat radiation fan.
In this embodiment, as shown in fig. 1 and fig. 2, when the heat dissipation fan 3 works, negative pressure is generated in the air inlet channel 5, so that air enters through the air inlet 51 of the air inlet channel, enters into the cavity 41 formed by surrounding the isolation cover 4 through the air inlet channel 5, passes through the heat dissipation fan 3 in the cavity 41, and finally is discharged outwards through the air outlet channel 6, thereby taking away heat formed on the surfaces of the chassis 21, the isolation cover 4, the air inlet channel 5 and the air outlet channel 6 when the kitchen range works. And, owing to be provided with cage 4, air inlet passageway 5 and air-out passageway 6, the air is entered last air outlet exhaust in the middle of the air inlet and is not produced direct interaction with the primary air that lower air inlet combustor 1 was drawn in chassis 21 inside in the middle of the exhaust process, and the negative pressure that radiator fan 3 during operation formed is isolated by cage 4, and the negative pressure that radiator fan 3 during operation produced in air inlet passageway 5 is guided to panel 22 top, therefore the primary air that lower air inlet combustor 1 operation process was drawn in chassis 21 inside can not receive the interference.
The embodiment provides a specific embodiment that the isolation cover 4 and the chassis 21 enclose together to form the cavity 41: specifically, as shown in fig. 4, the cross-section of the isolation cover 4 is C-shaped, the C-shaped opening of the isolation cover 4 is downward attached to the inner bottom surface of the chassis 21, and the isolation cover 4 and the chassis 21 enclose together to form a cavity 41, so that the chassis 21 below the isolation cover 4 can directly receive the cooling of the cooling fan 3, and meanwhile, the production cost of parts of the isolation cover 4 is reduced. Meanwhile, the screen 4 is horizontally disposed on the inner bottom surface of the chassis 21 at a central axis position in the length direction of the panel 22. The shielding cover 4 is horizontally arranged on the inner bottom surface of the chassis 21, and more effectively utilizes the space inside the chassis 21. The isolation cover 4 is arranged at the central axis position of the length direction of the panel 22, so that the cooling effect of the cooling fan 3 can radiate more to elements near the isolation cover 4, and the cooling efficiency is improved. Of course, in other embodiments, the cavity 41 may be enclosed by the isolation cover 4, and the specific implementation structure will not be described herein.
In this embodiment, the air inlet channel 5 and the air outlet channel 6 are symmetrically distributed along the central axis of the panel 22 in the length direction, so that when the kitchen range works, the air inlet channel 5 and the air outlet channel 6 can better reduce the heat formed on two sides of the central axis of the chassis 21 in the length direction, and the heat dissipation efficiency is improved. Meanwhile, the cross section from the air inlet channel 5 to the air inlet 51 of the air inlet channel is gradually enlarged, and the cross section from the air outlet channel 6 to the air outlet 61 of the air outlet channel is gradually enlarged, so that the process that air enters the air inlet channel 5 from the outside of the panel 22 and the process that air is discharged from the air outlet channel 6 to the outside of the panel 22 are smoother.
The upper surface of the panel 22 is provided with the air outlet 61 of the air outlet channel, so that when air is discharged to the outside of the panel 22 from the air outlet, heat on the panel 22 near the air outlet can be taken away at the same time, and the possibility of bursting glass on the panel 22 is reduced. Meanwhile, the air outlet 61 of the air outlet channel is adjacent to the air inlet 51 of the air inlet channel, and the air outlet 61 of the air outlet channel and the air inlet 51 of the air inlet channel are rectangular, so that the panel 22 is more conveniently opened in the manufacturing process, the production efficiency is improved, the air inlet 61 of the air outlet channel and the air inlet 51 of the air inlet channel are rectangular, the air can be smoothly introduced and discharged, and the heat dissipation efficiency is improved.
The panel 22 is provided with two knobs 7, the knobs 7 are positioned at one end of the panel 22 in the length direction, and the air inlets 51 of the air inlet channels and the air outlets 61 of the air outlet channels are positioned at the other end of the panel 22 in the length direction and symmetrically distributed along the central axis of the panel 22 in the length direction. The panel 22 length direction one end is provided with two knob 7 and is the conventional overall arrangement of top of a kitchen range top panel 22, accords with user's operation mode, sets up air intake 51 and the air outlet 61 of air inlet passageway and the axis symmetric distribution along panel 22 length direction at panel 22 length direction's the other end, has adapted aforesaid air inlet passageway 5 and air outlet passageway 6 of axis symmetric distribution along panel 22 length direction, makes things convenient for the inside air inlet passageway 5 and the air outlet passageway 6 of setting of chassis 21 to open on panel 22 upper surface to air inlet and exhaust efficiency has been improved. In addition, the structure can avoid that the air inlet 51 of the air inlet channel and the air outlet 61 of the air outlet channel are in and out to influence the normal use of users.
As shown in fig. 3, the heat dissipation fan 3 includes a volute casing 32 and an impeller 31, the volute casing 32 is horizontally arranged on the inner bottom surface of the chassis 21 and is located in a cavity 41 formed by the isolation cover 4, an air inlet 33 of the heat dissipation fan is formed by an opening of the top wall of the volute casing 32, an air outlet 34 of the heat dissipation fan is formed by an opening of the side wall of the volute casing 32, the air outlet 34 of the heat dissipation fan is in fluid communication with the air outlet channel 6, and the air inlet 33 of the heat dissipation fan is in fluid communication with the air inlet channel 5. The air enters from the air inlet, passes through the air inlet channel 5 and enters into the accommodating cavity 41 of the isolation cover 4, enters into the heat dissipation fan 3 from the air inlet 33 of the heat dissipation fan on the top wall of the volute cover 32, then enters into the air outlet channel 6 through the air outlet 34 of the heat dissipation fan on the side wall of the volute cover 32, and finally is discharged from the air outlet 61 of the air outlet channel.
As shown in fig. 5 and 6, the volute casing 32 and the air outlet channel 6 are integrally formed, and the isolation cover 4 and the air inlet channel 5 are integrally formed, so that the isolation cover 4, the air inlet channel 5 and the air outlet channel 6 are better in sealing performance, air is prevented from overflowing to the inside of the chassis 21 after entering from the outside of the panel 22, and the air is prevented from being ejected by interference, and meanwhile, the cost of part production is reduced due to the integrally formed structure, and the efficiency of part production is improved. In other embodiments, the size and direction of the isolation cover 4 can be freely adjusted according to the size requirement of the lower air inlet burner so as to prevent oil stains from entering the inside of the components and prolong the service life of the components; meanwhile, internal air exchange can be increased at the positions of needed components, such as a valve body, a battery box and the like, so that the temperature of the chassis 21 is reduced, and the specific implementation structure is not repeated here.
The utility model also provides an integrated kitchen range which adopts the lower air inlet combustor 1. By adopting the lower air inlet burner 1, air is not directly interacted with primary air ejected by the lower air inlet burner 1 in the chassis 21 in the process of entering the last air outlet from the air inlet, negative pressure formed by the heat radiation fan 3 during working is isolated by the isolation cover 4, and primary air ejected by the lower air inlet burner 1 in the chassis 21 during working can not be disturbed.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. The utility model provides a lower air inlet burning stove, includes lower air inlet combustor, stove shell and radiator fan, and the stove shell has upper portion open-ended chassis and lid closes the panel on the opening of chassis, radiator fan with lower air inlet combustor's air inlet part all set up in the stove shell, its characterized in that, the stove shell still has cage, air inlet passageway and air-out passageway, the cage encloses and establishes the formation appearance chamber, radiator fan is located hold the intracavity, hold the chamber with lower air inlet combustor's air inlet part separates, the upper surface of panel has been seted up the air intake of air inlet passageway, set up on the stove shell the air outlet of air outlet passageway, the air outlet of air outlet passageway with radiator fan's air outlet fluid communication, the air intake of air inlet passageway with radiator fan's air intake fluid communication.
2. The lower air intake stove of claim 1, wherein the cross-section of the shielding cover is C-shaped, the C-shaped opening of the shielding cover is downward and attached to the inner bottom surface of the chassis, and the shielding cover and the chassis enclose the cavity together.
3. The lower air intake burner of claim 1, wherein the shield is horizontally disposed on the inner bottom surface of the bottom plate and is positioned at a central axis of the panel in a length direction.
4. The lower air intake burner of claim 1, wherein the air intake passage and the air outlet passage are symmetrically distributed along a central axis of the panel in a length direction;
and/or the cross section from the air inlet channel to the air inlet of the air inlet channel is gradually enlarged, and the cross section from the air outlet channel to the air outlet of the air outlet channel is gradually enlarged.
5. The lower air intake burner of claim 1, wherein the upper surface of the panel is provided with an air outlet of the air outlet passage.
6. The lower air intake burner of claim 5, wherein the air outlet of the air outlet channel is adjacent to the air inlet of the air inlet channel, and the air outlet of the air outlet channel and the air inlet of the air inlet channel are rectangular.
7. The lower air intake burner of claim 5, wherein the panel is provided with two knobs, the knobs are positioned at one end of the panel in the length direction, and the air inlet of the air intake channel and the air outlet of the air outlet channel are positioned at the other end of the panel in the length direction and are symmetrically distributed along the central axis of the panel in the length direction.
8. The lower air intake burner of claim 1, wherein the heat dissipation fan comprises a volute housing and an impeller, the volute housing is horizontally arranged on the inner bottom surface of the chassis and is positioned in the cavity formed by the isolation cover, an air inlet of the heat dissipation fan is formed by an opening of the top wall of the volute housing, an air outlet of the heat dissipation fan is formed by an opening of the side wall of the volute housing, the air outlet of the heat dissipation fan is in fluid communication with the air outlet channel, and the air inlet of the heat dissipation fan is in fluid communication with the air inlet channel.
9. The lower air intake burner of claim 8, wherein the volute housing and the air outlet channel are integrally formed, and the shield and the air inlet channel are integrally formed.
10. An integrated burner comprising a lower air intake burner as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322054846.0U CN220453733U (en) | 2023-08-02 | 2023-08-02 | Lower air inlet combustion stove and integrated stove comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322054846.0U CN220453733U (en) | 2023-08-02 | 2023-08-02 | Lower air inlet combustion stove and integrated stove comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220453733U true CN220453733U (en) | 2024-02-06 |
Family
ID=89733334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322054846.0U Active CN220453733U (en) | 2023-08-02 | 2023-08-02 | Lower air inlet combustion stove and integrated stove comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220453733U (en) |
-
2023
- 2023-08-02 CN CN202322054846.0U patent/CN220453733U/en active Active
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