CN217423430U - Air duct machine - Google Patents
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- CN217423430U CN217423430U CN202221295080.4U CN202221295080U CN217423430U CN 217423430 U CN217423430 U CN 217423430U CN 202221295080 U CN202221295080 U CN 202221295080U CN 217423430 U CN217423430 U CN 217423430U
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Abstract
The utility model provides a tuber pipe machine, include: the air conditioner comprises a shell, a fan and a fan, wherein a side air opening is formed in the shell; the fan is arranged in the shell; the fan has inlet scoop and air exit, the inlet scoop with the minimum distance between the air exit is H2. The utility model provides an air duct machine, interval and the inlet scoop between the inlet scoop and the air exit through injecing the fan arrive the interval ratio between the crosswind mouth or arrive the ratio of the interval between the crosswind mouth with the air exit, the reasonable mounted position to the fan is confirmed, find suitable air duct machine's inner structure distribution proportion, thereby avoid can seriously restrict fan and air duct machine's performance at limited casing space, thereby effectual noise reduction, under the prerequisite that does not influence air duct machine's performance, the casing size is retrencied to the at utmost, reduce air duct machine's design cost, guarantee air duct machine's pleasing to the eye.
Description
Technical Field
The utility model relates to an air treatment equipment technical field, especially a tuber pipe machine.
Background
The air duct machine is one of air conditioners, in order to improve the comfortableness, some air duct machines adopt an upper cold air outlet mode and a lower hot air outlet mode, waterfall type refrigeration and carpet type warm air can be realized, in order to realize the air outlet mode, the air outlet of the air duct machine is required to be reversible, in the existing air outlet reversible air duct machine, a cross-flow fan and a centrifugal fan are generally adopted, but the fan is not reversible due to the problem of the setting mode of fan blades, the air direction after the reversal is not reversible, therefore, at least two fans can be arranged, one fan is responsible for forward air outlet, and the other fan is responsible for reverse air outlet, so that the structure of the air duct machine is larger, and the cost is higher.
In order to reduce the cost, the fan needs to be reduced, the mixed flow fan is a fan between the axial flow fan and the centrifugal fan, an impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, and the air flow motion in the volute mixes two motion modes of axial flow and centrifugal motion, so that the mixed flow fan is called mixed flow. Moreover, the mixed flow fan not only can reduce the volume, but also can ensure the flow direction and the wind pressure of the airflow.
However, the air inlet of the impeller of the mixed flow fan is easily influenced by an external air duct, the working performance of the impeller is influenced by unreasonable air inlet conditions and a complex external air flow environment, and therefore the air quantity of the air duct machine is influenced and noise is generated.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an air duct machine to solve the poor problem of fan air-out effect among the prior art air duct machine.
A ducted air conditioner comprising:
the air conditioner comprises a shell, a fan and a fan, wherein a side air opening is formed in the shell;
the fan is arranged in the shell;
the fan is provided with an air suction opening and an air outlet, and the distance between the air suction opening and the air outlet is H2;
the air suction opening faces the side air opening, the distance between the air suction opening and the side air opening is H1, and the ratio range between H1 and H2 is more than or equal to 0.25 and less than or equal to H1/H2 and less than or equal to 0.34;
or the air outlet faces the side air inlet, the minimum distance between the air outlet and the side air inlet is H1, and the ratio range between H1 and H2 is H1/H2/0.34.
The air pipe machine further comprises a heat exchanger, the heat exchanger is arranged in the shell, the fan is located between the heat exchanger and the side air inlet, when the air suction inlet faces the side air inlet, the air outlet faces the heat exchanger, the minimum distance between the air outlet and the heat exchanger is H3, and the ratio range between H2 and H3 is 0.33-H3/H2-0.42; or when the air exhaust opening faces the side air opening, the air suction opening faces the heat exchanger, the minimum distance between the air suction opening and the heat exchanger is H3, and the ratio range between H2 and H3 is not less than 0.33 and not more than H3/H2 and not more than 0.42.
The shell is further provided with a lower air inlet, the ducted air conditioner further comprises a heat exchanger, the heat exchanger is located between the fan and the lower air inlet, when the air suction inlet faces the side air inlet, the air outlet faces the heat exchanger, the difference value between the minimum distance between the air outlet and the lower air inlet and the minimum distance between the air outlet and the heat exchanger is H4, and the ratio range between H4 and H3 is equal to or greater than 0.60 and equal to or less than H3/H4 and equal to or less than 0.72; or when the air outlet faces the side air inlet, the air suction inlet faces the heat exchanger, the difference value between the minimum distance between the air suction inlet and the lower air inlet and the minimum distance between the air suction inlet and the heat exchanger is H4, and the ratio range between H4 and H3 is not less than 0.60 and not more than H3/H4 and not more than 0.72.
The cross section of the heat exchanger is V-shaped, and the sharp angle of the V-shaped faces the fan.
The fan rotationally set up in the casing, just the fan has and makes the inlet scoop orientation the first orientation in side wind gap and have the messenger the air exit orientation the second orientation in side wind gap.
The shell is further provided with a lower air opening, when the fan is in a first orientation, the side air opening is used as the air inlet of the air pipe machine, the lower air opening is used as the air outlet of the air pipe machine, when the fan is in a second orientation, the side air opening is used as the air outlet of the air pipe machine, and the lower air opening is used as the air inlet of the air pipe machine.
The casing has bottom surface and side, down the tuyere set up in on the bottom surface, the side tuyere set up in on the side.
The fan is a mixed flow fan.
The outer surface of the volute of the fan is a curved surface.
The spiral case is the table structure, two terminal surfaces punishment of table structure are provided with respectively the inlet scoop with the air exit, just interval between two terminal surfaces of table structure is H2.
The utility model provides an air duct machine, interval and the air inlet between the side draught to the interval ratio between the side draught to the side draught through prescribing a limit to the fan between inlet scoop and the air exit or with the air exit to the ratio of the interval between the side draught, the reasonable mounted position to the fan is confirmed, find suitable air duct machine's inner structure distribution proportion, thereby avoid can seriously restrict fan and air duct machine's performance at limited casing space, thereby effectual noise reduction, under the prerequisite that does not influence air duct machine's performance, the size is retrencied to the at utmost casing, reduce air duct machine's design cost, guarantee air duct machine's pleasing to the eye.
Drawings
Fig. 1 is a schematic structural view of a duct machine in which an air suction inlet of a fan faces a side air inlet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a duct machine in which an air outlet of a fan faces a side air inlet according to an embodiment of the present invention;
in the figure:
1. a housing; 12. a side tuyere; 2. a fan; 21. an air suction opening; 22. an air outlet; 3. a heat exchanger; 11. and a lower air opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 and fig. 2, the utility model discloses a ducted air conditioner, include: the air conditioner comprises a shell 1, wherein a side air inlet 12 is formed in the shell 1; the fan 2 is arranged in the shell 1; the fan 2 is provided with an air suction opening 21 and an air exhaust opening 22, and the minimum distance between the air suction opening 21 and the air exhaust opening 22 is H2; the air suction opening 21 faces the side air opening 12, the distance between the air suction opening 21 and the side air opening 12 is H1, and the range of the ratio between H1 and H2 is equal to or greater than 0.25 and equal to or less than H1/H2 and equal to or less than 0.34. Interval and inlet scoop 21 between inlet scoop 21 and the air exit 22 through injecing fan 2 to the ratio of the interval between the side wind mouth 12, the reasonable mounted position to fan 2 is confirmed, find suitable tuber pipe machine's inner structure distribution proportion, thereby avoid can seriously restrict fan 2 and tuber pipe machine's performance in limited 1 space of casing, thereby effectual noise reduction, under the prerequisite that does not influence tuber pipe machine's performance, casing 1 size is retrencied to the at utmost, reduce tuber pipe machine's design cost, guarantee tuber pipe machine's pleasing to the eye.
The minimum distance H2 between the air suction opening 21 and the air discharge opening 22 of the fan 2 is the minimum distance between the edge of the air suction opening 21 and the edge of the air discharge opening 22, and when the plane where the air suction opening 21 is located and the plane where the air discharge opening 22 is located are parallel to each other, the minimum distance H2 between the air suction opening 21 and the air discharge opening 22 of the fan 2 is the distance between the plane where the air suction opening 21 is located and the plane where the air discharge opening 22 is located. The minimum distance H2 between the air suction opening 21 and the side air inlet 12 is the minimum distance between the edge of the air suction opening 21 and the edge of the side air inlet 12, and when the plane where the air suction opening 21 is located and the plane where the side air inlet 12 is located are parallel to each other, the minimum distance H1 between the air suction opening 21 and the side air inlet 12 is the distance between the plane where the air suction opening 21 is located and the plane where the side air inlet 12 is located.
The air duct machine of the embodiment is subjected to simulation test, the ratio of H1 to H2 is changed, and the simulation result is as follows:
according to the simulation data, when H1/H2 is 0.28, the air volume does not reach the maximum value, but the relative noise value is small, and when H1/H2 is reduced to 0.25, although the air volume begins to increase, the noise also rises, and the positive effect caused by the increase of the air volume is far smaller than the negative effect caused by the noise; when H1/H2 is continuously reduced to 0.13, although the air volume is continuously increased, the noise increase range is more, and the negative effect is stronger and stronger; when H1/H2 is increased to 0.34, the air volume begins to be reduced, the noise is reduced, but the negative effect brought by the reduction of the air volume is far smaller than the positive effect brought by the reduction of the noise; when H1/H2 continues to increase to 0.40, the air volume continues to decrease, but the noise level does not continue to decrease accordingly. That is, the larger the value of H1/H2, the longer the distance between the fan 2 and the side wind port 12 is, the more the space of the casing 1 will be wasted, and the noise will not be reduced while the wind volume is reduced, while the smaller the value of H1/H2, the closer the distance between the fan 2 and the side wind port 12 is, the larger the wind volume is, but the larger the noise will be, which is not beneficial to the noise reduction of the unit.
As another embodiment, as shown in fig. 2, the difference from the previous embodiment is that: the exhaust outlet 22 faces the side air inlet 12, the minimum distance between the exhaust outlet 22 and the side air inlet 12 is H5, and the ratio range between H5 and H2 is more than or equal to 0.25 and less than or equal to H5/H2 and less than or equal to 0.34. Interval and air exit 22 between inlet scoop 21 and the air exit 22 through injecing fan 2 to the interval between the side wind mouth 12, the reasonable mounted position to fan 2 is confirmed, find suitable tuber pipe machine's inner structure distribution proportion, thereby avoid can seriously restrict fan 2 and tuber pipe machine's performance in limited 1 space of casing, thereby effectual noise reduction, under the prerequisite that does not influence tuber pipe machine's performance, casing 1 size is retrencied to the at utmost, reduce tuber pipe machine's design cost, guarantee tuber pipe machine's pleasing to the eye.
The minimum distance H2 between the air suction opening 21 and the air discharge opening 22 of the fan 2 is the minimum distance between the edge of the air suction opening 21 and the edge of the air discharge opening 22, and when the plane where the air suction opening 21 is located and the plane where the air discharge opening 22 is located are parallel to each other, the minimum distance H1 between the air suction opening 21 and the air discharge opening 22 of the fan 2 is the distance between the plane where the air suction opening 21 is located and the plane where the air discharge opening 22 is located. The minimum distance H1 between the exhaust outlet 22 and the side air inlet 12 is the minimum distance between the edge of the exhaust outlet 22 and the edge of the side air inlet 12, and when the plane where the exhaust outlet 22 is located and the plane where the side air inlet 12 is located are parallel to each other, the minimum distance H1 between the exhaust outlet 22 and the side air inlet 12 is the distance between the plane where the exhaust outlet 22 is located and the plane where the side air inlet 12 is located.
The tuber pipe machine still includes heat exchanger 3, heat exchanger 3 set up in the casing 1, fan 2 is located heat exchanger 3 with between the side wind gap 12, work as inlet scoop 21 orientation during the side wind gap 12, exhaust outlet 22 orientation heat exchanger 3, just exhaust outlet 22 with minimum distance between the heat exchanger 3 is H3, and the ratio scope between H2 and the H3 is 0.33 and is less than or equal to H3/H2 and is less than or equal to 0.42.
The minimum distance H3 between the exhaust outlet 22 and the heat exchanger 3 is the minimum vertical distance from any point on the heat exchanger 3 to the plane where the exhaust outlet 22 is located.
The air duct machine of the embodiment is subjected to simulation test, the ratio between H2 and H3 is changed, and the simulation result is as follows:
according to simulation data, when H3/H2 is 0.39, the air volume reaches the maximum value, and the noise reaches the minimum value, when H3/H2 is reduced to 0.33, the air volume begins to be reduced, the noise begins to be increased, when H3/H2 is continuously reduced to 0.28, the air volume continues to be reduced, the noise continues to be increased, and the air volume at the moment can not ensure that the heat exchange efficiency of the air pipe machine reaches a set value; when H3/H2 is increased to 0.42, the air volume and the noise start to be reduced simultaneously, when H3/H2 is continuously increased to 0.5, the air volume and the noise are further reduced, and the air volume at the moment can not ensure that the heat exchange efficiency of the air pipe machine reaches a set value. That is, the smaller the value of H3/H2, the closer the distance between the heat exchanger 3 and the fan 2 is, at this time, the heat exchanger 3 will generate resistance to the air entering and exiting from the fan 2, which will reduce the air volume, and the probability of blowing water will be increased, and the air exhausted from the fan 2 will blow directly to the heat exchanger 3, the high-speed air flow will pass through the fin of the heat exchanger 3 and introduce the noise source, and when the value of H3/H2 is larger, although the air volume and the noise will start to be reduced, the air volume at this time cannot ensure that the heat exchange efficiency of the air tube machine reaches the set value, and the space of the housing 1 will be wasted to a certain extent, and the flow resistance will be increased, which will further cause the attenuation of the air volume.
As another embodiment, as shown in fig. 2, the difference from the previous embodiment is that: when the exhaust outlet 22 faces the side air inlet 12, the air suction opening 21 faces the heat exchanger 3, the minimum distance between the air suction opening 21 and the heat exchanger 3 is H6, and the ratio range between H2 and H6 is not less than 0.33 and not more than H6/H2 and not more than 0.42.
The minimum distance H3 between the exhaust outlet 22 and the heat exchanger 3 is the minimum vertical distance from any point on the heat exchanger 3 to the plane where the exhaust outlet 22 is located.
Still be formed with down wind gap 11 on the casing 1, tuber pipe machine still includes heat exchanger 3, heat exchanger 3 is located fan 2 with between the wind gap 11 down, work as inlet scoop 21 orientation during side wind gap 12, exhaust port 22 orientation heat exchanger 3, just exhaust port 22 with down minimum distance between the wind gap 11 with the exhaust port 22 with the difference of minimum distance between the heat exchanger 3 is H4, and the ratio range between H4 and the H3 is 0.60 and is not more than H3/H4 and is not more than 0.72.
The minimum distance between the lower air inlet 11 and the air outlet 22 is the minimum vertical distance between the edge of the lower air inlet 11 close to the fan 2 and the plane where the air outlet 22 is located, and when the air outlet 22 is parallel to the vertical plane and the lower air inlet 11 is parallel to the horizontal plane, the minimum distance between the lower air inlet 11 and the air outlet 22 is the vertical distance between the edge of the lower air inlet 11 close to the fan 2 and the vertical plane where the air outlet 22 is located.
The air duct machine of the embodiment is subjected to simulation test, the numerical value of H3/H4 is changed, and the simulation result is as follows:
according to the simulation data, when H3/H4 is 0.66, the air volume reaches the maximum value and the noise reaches the minimum value, and when H3/H4 is increased to 0.72, the air volume begins to decrease and the noise begins to increase; when H3/H4 is continuously increased to 0.82, the air volume is continuously reduced, the noise is continuously increased, the air volume at the moment can not meet the condition that the heat exchange efficiency of the air duct machine reaches a set value, and the noise value is too large, so that the noise reduction of the air duct machine is not facilitated; when H3/H4 is reduced to 0.60, the air volume begins to be reduced, and the noise begins to be increased; when H3/H4 is continuously reduced to 0.5, the air volume is continuously reduced, the noise is continuously increased, the air volume at the moment cannot meet the requirement that the heat exchange efficiency of the air pipe machine reaches a set value, and the noise value is overlarge, so that the noise reduction of the air pipe machine is not facilitated. The value of H3/H4 directly affects the space and angle of the heat exchanger 3. When the numerical value of H3/H4 is larger, the arrangement space of the heat exchanger 3 is smaller, the arrangement space of the heat exchanger 3 is compressed, the distance between the heat exchanger 3 and the fan is increased, so that the flow loss inside the unit is aggravated, the air volume is attenuated, the capacity of the unit is not favorably improved, and the increase of the distance between the heat exchanger 3 and the fan can aggravate the flow turbulence condition between the heat exchanger and the fan, and the noise reduction and the capacity of the air duct machine are not favorably improved; when the numerical value of H3/H4 is smaller, it indicates that the heat exchanger 3 is arranged in a larger space, the heat exchanger 3 is closer to the fan, the airflow at the outlet of the fan cannot be fully expanded, and impacts the fin structure of the heat exchanger 3 at a higher speed, so that the phenomena of air quantity attenuation and noise rise are caused, and meanwhile, a larger shell 1 is needed, so that the unit cost can be increased, and the attractiveness is reduced.
As another embodiment, as shown in fig. 2, the difference from the previous embodiment is that: when the exhaust outlet 22 faces the side air inlet 12, the air suction opening 21 faces the heat exchanger 3, the difference value between the minimum distance between the air suction opening 21 and the lower air inlet 11 and the minimum distance between the air suction opening 21 and the heat exchanger 3 is H7, and the ratio range between H7 and H3 is 0.60-H3/H7-0.72.
The minimum distance between the lower air inlet 11 and the air suction opening 21 is the minimum value of the vertical distance between the edge of the lower air inlet 11 close to the fan 2 and the plane where the air suction opening 21 is located, and when the air suction opening 21 is parallel to the vertical plane and the lower air inlet 11 is parallel to the horizontal plane, the minimum distance between the lower air inlet 11 and the air suction opening 21 is the vertical distance between the edge of the lower air inlet 11 close to the fan 2 and the vertical plane where the air suction opening 21 is located.
The cross section of the heat exchanger 3 is V-shaped, and the sharp angle of the V-shaped faces the fan 2.
The casing 1 is further provided with a lower air inlet 11, when the fan 2 is in a first orientation, the side air inlet 12 serves as an air inlet of the air pipe machine, the lower air inlet 11 serves as an air outlet of the air pipe machine, when the fan 2 is in a second orientation, the side air inlet 12 serves as an air outlet of the air pipe machine, and the lower air inlet 11 serves as an air inlet of the air pipe machine.
In the heating mode of the air pipe machine, the lower air opening 11 is used for exhausting air, the side air opening 12 is used for exhausting air, and the air outlet 22 of the fan 2 faces the heat exchanger 3; the air outside the shell 1 is sucked by the side air inlet 12 under the action of the fan 2, sequentially passes through the fan 2 and the heat exchanger 3, is heated and then is discharged out of the shell 1 by the lower air inlet 11, so that the effect of rapid heating is realized;
the tuber pipe machine is under refrigeration mode, 11 air intakes in the lower wind gap, 12 air outages in the side wind gap, the inlet scoop 21 of fan 2 is towards heat exchanger 3. The air outside the shell 1 is sucked by the lower air inlet 11 under the action of the fan 2 and is discharged out of the shell 1 by the side air inlet 12 after sequentially passing through the cooling of the heat exchanger 3 and the fan 2, so that the waterfall type refrigeration effect is realized.
The fan 2 is a mixed flow fan.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A ducted air conditioner characterized in that: the method comprises the following steps:
the air conditioner comprises a shell (1), wherein a side air opening (12) is formed in the shell (1);
the fan (2) is arranged in the shell (1);
the fan (2) is provided with an air suction opening (21) and an air exhaust opening (22), and the distance between the air suction opening (21) and the air exhaust opening (22) is H2;
the air suction opening (21) faces the side air opening (12), the distance between the air suction opening (21) and the side air opening (12) is H1, and the ratio range of H1 to H2 is H1/H2 is not more than 0.34;
or the air outlet (22) faces the side air inlet (12), the distance between the air outlet (22) and the side air inlet (12) is H5, and the ratio range of H5 to H2 is H5/H2 is not more than 0.34.
2. The ducted air conditioner of claim 1, wherein: the air pipe machine further comprises a heat exchanger (3), the heat exchanger (3) is arranged in the shell (1), the fan (2) is located between the heat exchanger (3) and the side air opening (12), when the air suction opening (21) faces the side air opening (12), the air exhaust opening (22) faces the heat exchanger (3), the minimum distance between the air exhaust opening (22) and the heat exchanger (3) is H3, and the ratio range between H2 and H3 is H3/H2 which is not less than 0.33 and not more than 0.42; or, when the exhaust outlet (22) faces the side air opening (12), the air suction opening (21) faces the heat exchanger (3), the minimum distance between the air suction opening (21) and the heat exchanger (3) is H6, and the ratio range between H2 and H6 is equal to or larger than 0.33 and equal to or smaller than H6/H2 and equal to or smaller than 0.42.
3. The ducted air conditioner of claim 1, wherein: a lower air opening (11) is further formed in the shell (1), the air duct machine further comprises a heat exchanger (3), the heat exchanger (3) is located between the fan (2) and the lower air opening (11), when the air suction opening (21) faces the side air opening (12), the air exhaust opening (22) faces the heat exchanger (3), the difference value between the minimum distance between the air exhaust opening (22) and the lower air opening (11) and the minimum distance between the air exhaust opening (22) and the heat exchanger (3) is H4, and the ratio range between H4 and H3 is H3/H4 is not less than 0.72 and is not more than 0.60; or, when air exit (22) orientation when side wind gap (12), inlet scoop (21) orientation heat exchanger (3), just inlet scoop (21) with the minimum distance between lower wind gap (11) with the difference of minimum distance between inlet scoop (21) and heat exchanger (3) is H7, and the ratio range between H7 and H3 is 0.60 ≤ H3/H7 ≤ 0.72.
4. The ducted air conditioner according to claim 2 or 3, wherein: the cross section of the heat exchanger (3) is V-shaped, and the sharp angle of the V-shaped faces the fan (2).
5. The ducted air conditioner of claim 1, wherein: fan (2) rotationally set up in casing (1), just fan (2) have make inlet scoop (21) orientation the first orientation of side wind gap (12) and have make exhaust exit (22) orientation the second orientation of side wind gap (12).
6. The ducted air conditioner of claim 5, wherein: the air conditioner is characterized in that a lower air opening (11) is further formed in the shell (1), when the fan (2) is located in a first orientation, the side air opening (12) serves as an air inlet of the air pipe machine, the lower air opening (11) serves as an air outlet of the air pipe machine, when the fan (2) is located in a second orientation, the side air opening (12) serves as the air outlet of the air pipe machine, and the lower air opening (11) serves as the air inlet of the air pipe machine.
7. The ducted air conditioner of claim 6, wherein: the shell (1) is provided with a bottom surface and a side surface, the lower air opening (11) is arranged on the bottom surface, and the side air opening (12) is arranged on the side surface.
8. The ducted air conditioner of claim 1, wherein: the fan (2) is a mixed flow fan.
9. The ducted air conditioner of claim 1, wherein: the outer surface of the volute of the fan (2) is a curved surface.
10. The ducted air conditioner of claim 9, wherein: the spiral case is the table structure, two terminal surfaces punishment of table structure are provided with respectively inlet scoop (21) with air exit (22), just interval between two terminal surfaces of table structure is H2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221295080.4U CN217423430U (en) | 2022-05-27 | 2022-05-27 | Air duct machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221295080.4U CN217423430U (en) | 2022-05-27 | 2022-05-27 | Air duct machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217423430U true CN217423430U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221295080.4U Active CN217423430U (en) | 2022-05-27 | 2022-05-27 | Air duct machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217423430U (en) |
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2022
- 2022-05-27 CN CN202221295080.4U patent/CN217423430U/en active Active
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