CN218921754U - Low-noise wearable air conditioner - Google Patents
Low-noise wearable air conditioner Download PDFInfo
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- CN218921754U CN218921754U CN202223283690.5U CN202223283690U CN218921754U CN 218921754 U CN218921754 U CN 218921754U CN 202223283690 U CN202223283690 U CN 202223283690U CN 218921754 U CN218921754 U CN 218921754U
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Abstract
The utility model belongs to the technical field of wearable air conditioners, and particularly relates to a low-noise wearable air conditioner, which comprises an inner frame body, wherein a refrigerating mechanism arranged on the inner frame body comprises a condenser, a compressor, a heat exchanger, a circuit main board, a heat dissipation fan and a water pump, an upper buffer pad is adhered to the bottom of the inner frame body, clamping pieces arranged at the edge of the inner frame body are arranged on a bottom plate through bolts, the bottom plate is arranged on an outer shell body through supporting columns, main soundproof cotton is adhered to the inner wall of the outer shell body, fixing frames are respectively arranged on the outer shell bodies at the left side and the right side of the compressor and the outer shell body at one side of a heat dissipation fan outlet, soundproof cotton pads are adhered to the two sides of a partition plate arranged at the inner side of the fixing frames and the inner wall of the fixing frames, and ventilation grooves are formed between the adjacent soundproof cotton pads. The beneficial effects of the utility model are as follows: the main soundproof cotton absorbs partial noise generated during the working of the refrigerating mechanism, the fixed frame ensures the radiating effect of the refrigerating mechanism, the partition plate absorbs the noise of flowing air, and the clamping piece is matched with the upper buffer cushion to play a role in damping and noise reduction.
Description
Technical Field
The utility model belongs to the technical field of wearable air conditioners, and particularly relates to a low-noise wearable air conditioner.
Background
The miniature direct current compressor wearing type special air conditioner is put forward in the market at present, and is formed by a host computer, a liquid cooling clothes, a waist pack and a battery, and is consistent with the operation principle of a common air conditioner, and the miniature compressor is matched with an electric control to realize cooling of liquid in a pipeline, so that the temperature of the liquid cooling clothes is reduced, and the body surface temperature of a wearer is reduced through the cooling clothes transmission. However, the above structure has the following disadvantages: the noise that produces when compressor, water pump etc. work in the refrigeration mechanism is great, can make the personnel who wears to use wearing formula air conditioner produce certain uncomfortable sense, and traditional noise reduction's mode is through keeping apart the noise source, reduces the transmission intensity of sound wave. However, due to several components necessary in the refrigeration mechanism, such as: the compressor and the condenser all need better heat dissipation and ventilation environment in the working process, so that the common sealing and sound insulation mode is not suitable for sound insulation and noise reduction of the wearable air conditioner.
Disclosure of Invention
In view of the above problems, an object of the present utility model is to: the low-noise wearable air conditioner solves the problem that noise generated by the operation of a compressor and a condenser in the traditional wearable air conditioner causes noise disturbance to users.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a low noise wearable air conditioner, includes interior support body, install refrigerating mechanism on the interior support body, refrigerating mechanism includes condenser, compressor, heat exchanger, circuit board, heat dissipation fan and water pump, the bottom of interior support body bonds there is the blotter, the holder is installed at the limit portion of interior support body, the holder includes down blotter and splint, the holder passes through the bolt to be installed on the bottom plate, the bottom plate passes through the support column to be installed on the interior bottom surface of shell body, the inner wall bonding of shell body has main soundproof cotton, all be equipped with fixed frame on the shell body of shell body and heat dissipation fan-out wind gap one side of compressor left and right sides, the inboard of fixed frame is equipped with a plurality of baffles, bond on the inner wall of both sides and fixed frame of baffle has the soundproof cotton pad, adjacent be formed with the ventilation groove between the soundproof cotton pad.
The beneficial effects of the utility model are as follows: the main soundproof cotton absorbs partial noise generated during the working of the refrigerating mechanism, the fixed frame ensures the radiating effect of the refrigerating mechanism, the partition plate absorbs the noise of flowing air, and the clamping piece is matched with the upper buffer cushion to play a role in damping and noise reduction.
To effectively absorb noise generated by the operation of the refrigeration mechanism;
as a further improvement of the above technical scheme: the shell body is of a box body structure, the main soundproof cotton is flatly paved on the inner wall of the shell body, the water outlet of the water pump is connected with one end of the heat exchanger through a pipeline, the other end of the heat exchanger is connected with one end of the cooling pipeline, the water inlet of the water pump is connected with the other end of the cooling pipeline, the air outlet of the compressor is connected with the air inlet of the condenser through a copper pipe, the air outlet of the condenser is connected with the air inlet of the heat exchanger through a copper pipe, and the air outlet of the heat exchanger is connected with the air inlet of the compressor.
The beneficial effects of this improvement are: the main soundproof cotton plays an effective role in energy absorption and noise reduction.
In order to ensure the heat dissipation effect of the refrigeration mechanism;
as a further improvement of the above technical scheme: the fixed frame is square frame structure, and the notch of adaptation installation fixed frame has been seted up on the side of shell body, the ventilation groove is flat square logical groove structure.
The beneficial effects of this improvement are: the outside air can smoothly flow through the ventilation groove so as to take away the heat generated by the operation of the refrigeration mechanism.
To reduce noise generated by air passing through the fixing frame;
as a further improvement of the above technical scheme: the edge of the soundproof cotton pad is flush with the edge of the partition plate.
The beneficial effects of this improvement are: the soundproof cotton pad plays a role in sound absorption and noise reduction.
In order to firmly support the bottom plate;
as a further improvement of the above technical scheme: the upper end face and the lower end face of the support column are respectively welded with the bottom face of the bottom plate and the inner bottom face of the outer shell, and the number of the support columns is four and are respectively arranged at four corners of the bottom plate.
The beneficial effects of this improvement are: the support column can support the fixed bottom plate, so that the main soundproof cotton is filled and installed on the outer shell below the bottom plate.
In order to limit and fix the inner frame body;
as a further improvement of the above technical scheme: the bottom plate is a flat square plate structure, and the bottom surface of the clamping plate is provided with a groove body which is matched with the cover and is arranged on the corner of the inner frame body.
The beneficial effects of this improvement are: after the clamping plate cover is arranged on the inner frame body, the bottom plate can be connected through bolt fastening, and then the bottom corner of the inner frame body is clamped and fixed on the bottom plate.
In order to avoid noise caused by vibration striking the bottom plate when the refrigeration mechanism works;
as a further improvement of the above technical scheme: the lower cushion pad is adhered to the inner wall of the clamping plate.
The beneficial effects of this improvement are: the lower cushion pad is matched with the upper cushion pad to prevent the inner frame body from generating rigid impact with the clamping piece and the bottom plate under the vibration drive of the refrigeration mechanism, so that noise is generated.
None of the parts of the device are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the outer housing of the present utility model;
FIG. 3 is a front cross-sectional view of the outer housing of the present utility model;
FIG. 4 is a schematic view of a clamping member according to the present utility model;
FIG. 5 is an enlarged view of A in the present utility model;
in the figure: 1. an inner frame body; 2. a refrigeration mechanism; 21. a condenser; 22. a compressor; 23. a heat exchanger; 24. a circuit motherboard; 25. a heat dissipation fan; 26. a water pump; 3. an upper cushion pad; 4. a clamping member; 41. a lower cushion pad; 42. a clamping plate; 5. a bottom plate; 6. a support column; 7. a main soundproof cotton; 8. a fixed frame; 9. a sound insulation cotton pad; 10. a ventilation groove; 13. a partition plate; 14. an outer shell.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.
Example 1:
as shown in fig. 1-5: the utility model provides a low noise wearable air conditioner, includes interior support body 1, install refrigerating mechanism 2 on the interior support body 1, refrigerating mechanism 2 includes condenser 21, compressor 22, heat exchanger 23, circuit motherboard 24, heat dissipation fan 25 and water pump 26, the bottom of interior support body 1 bonds and has upper cushion 3, holder 4 is installed to the limit portion of interior support body 1, holder 4 includes down blotter 41 and splint 42, holder 4 passes through the bolt mounting on bottom plate 5, bottom plate 5 passes through support column 6 and installs on the interior bottom surface of shell 14, the inner wall of shell 14 bonds and has main soundproof cotton 7, all be equipped with fixed frame 8 on shell 14 and heat dissipation fan 25 air outlet one side's the shell 14 of compressor 22 left and right sides, the inboard of fixed frame 8 is equipped with a plurality of baffles 13, the both sides of baffle 13 and the inner wall of fixed frame 8 are last to bond and are had soundproof cotton pad 9, adjacent be formed with ventilation groove 10 between the soundproof cotton pad 9.
The working principle of the technical scheme is as follows: the compressor 22 compresses the medium in the copper pipe into high-temperature high-pressure gas, then the high-temperature high-pressure gas is sent into the condenser 21, the heat dissipation fan 25 works to dissipate heat of the condenser 21, the medium in the pipe is enabled to be in a medium-temperature high-pressure liquid state, and then the medium enters the heat exchanger 23 through a throttling element in the prior art and is decompressed and vaporized into a low-temperature gas state after entering the heat exchanger 23, so that heat of a water body flowing through the heat exchanger 23 is absorbed, and the cooling effect is achieved; the noise generated when the compressor 22 and the water pump 26 work is mostly absorbed by the main soundproof cotton 7, under the suction of the heat dissipation fan 25, external air enters the inside of the outer shell 14 through the fixed frames 8 at the two sides of the outer shell 14, then is discharged through the fixed frames 8 at the air outlet direction of the heat dissipation fan 25, and takes away the heat in the device, and when the air flows through the fixed frames 8, the fixed frames 8 and the soundproof cotton pads 9 arranged on the partition 13 play a role in absorbing the sound and reducing the noise, so that the working noise of the device is reduced; when the refrigerating mechanism arranged on the inner frame body 1 works to vibrate, the upper buffer cushion 3 is matched with the clamping piece 4 to play roles of limiting and fixing the inner frame body 1 and absorbing the vibration, so that noise caused by vibration is reduced.
Example 2:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The outer shell 14 is of a box structure, the main soundproof cotton 7 is flatly paved on the inner wall of the outer shell 14, a water outlet of the water pump 26 is connected with one end of the heat exchanger 23 through a pipeline, the other end of the heat exchanger 23 is connected with one end of a cooling pipeline, a water inlet of the water pump 26 is connected with the other end of the cooling pipeline, a gas outlet of the compressor 22 is connected with a gas inlet of the condenser 21 through a copper pipe, a gas outlet of the condenser 21 is connected with a gas inlet of the heat exchanger 23 through a copper pipe, and a gas outlet of the heat exchanger 23 is connected with a gas inlet of the compressor 22.
Example 3:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The fixed frame 8 is of a square frame structure, a notch for adaptively installing the fixed frame 8 is formed in the side face of the outer shell 14, and the ventilation groove 10 is of a flat square through groove structure.
Example 4:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The edge of the soundproof cotton pad 9 is flush with the edge of the partition 13.
Example 5:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The upper and lower terminal surfaces of support column 6 weld the bottom surface of bottom plate 5 and the interior bottom surface of shell body 14 respectively, the quantity of support column 6 is four, and sets up four corners at bottom plate 5 respectively.
Example 6:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The bottom plate 5 is a flat square plate structure, and the bottom surface of the clamping plate 42 is provided with a groove body which is matched with the cover and is arranged on the corner of the inner frame body 1.
Example 7:
as shown in fig. 1 to 5, as a further optimization of the above embodiment, a low noise wearable air conditioner includes an inner frame 1, a refrigerating mechanism 2 is mounted on the inner frame 1, the refrigerating mechanism 2 includes a condenser 21, a compressor 22, a heat exchanger 23, a circuit board 24, a heat dissipation fan 25 and a water pump 26, an upper cushion pad 3 is bonded to the bottom of the inner frame 1, a clamping member 4 is mounted on the edge of the inner frame 1, the clamping member 4 includes a lower cushion pad 41 and a clamping plate 42, the clamping member 4 is mounted on a bottom plate 5 through bolts, the bottom plate 5 is mounted on the inner bottom surface of an outer casing 14 through a support column 6, a main soundproof cotton 7 is bonded to the inner wall of the outer casing 14 on the left and right sides of the compressor 22 and on the outer casing 14 on the air outlet side of the heat dissipation fan 25, a plurality of partition plates 13 are disposed on the inner sides of the fixing frame 8, a cotton cushion 9 is bonded to the two sides of the partition plates 13 and on the inner wall of the fixing frame 8, and a ventilation groove 10 is formed between the adjacent soundproof cotton cushion pads 9. The lower cushion 41 is adhered to the inner wall of the clamping plate 42.
The working principle and the using flow of the utility model are as follows: the compressor 22 compresses the medium in the copper pipe into high-temperature high-pressure gas, then the high-temperature high-pressure gas is sent into the condenser 21, the heat dissipation fan 25 works to dissipate heat of the condenser 21, the medium in the pipe is enabled to be in a medium-temperature high-pressure liquid state, and then the medium enters the heat exchanger 23 through a throttling element in the prior art and is decompressed and vaporized into a low-temperature gas state after entering the heat exchanger 23, so that heat of a water body flowing through the heat exchanger 23 is absorbed, and the cooling effect is achieved; the noise generated when the compressor 22 and the water pump 26 work is mostly absorbed by the main soundproof cotton 7, under the suction of the heat dissipation fan 25, external air enters the inside of the outer shell 14 through the fixed frames 8 at the two sides of the outer shell 14, then is discharged through the fixed frames 8 at the air outlet direction of the heat dissipation fan 25, and takes away the heat in the device, and when the air flows through the fixed frames 8, the fixed frames 8 and the soundproof cotton pads 9 arranged on the partition 13 play a role in absorbing the sound and reducing the noise, so that the working noise of the device is reduced; when the refrigerating mechanism arranged on the inner frame body 1 works to vibrate, the upper buffer cushion 3 is matched with the clamping piece 4 to play roles of limiting and fixing the inner frame body 1 and absorbing the vibration, so that noise caused by vibration is reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (7)
1. A low noise wearable air conditioner, its characterized in that: including interior support body (1), install refrigeration mechanism (2) on interior support body (1), refrigeration mechanism (2) are including condenser (21), compressor (22), heat exchanger (23), circuit board (24), heat dissipation fan (25) and water pump (26), the bottom bonding of interior support body (1) has cushion (3), clamping piece (4) are installed at the limit portion of interior support body (1), clamping piece (4) include down blotter (41) and splint (42), clamping piece (4) are installed on bottom plate (5) through the bolt, bottom plate (5) are installed on the interior bottom surface of shell body (14) through support column (6), the inner wall bonding of shell body (14) has main soundproof cotton (7), all be equipped with fixed frame (8) on shell body (14) of compressor (22) both sides and heat dissipation fan (25) air outlet one side, the inboard of fixed frame (8) is equipped with a plurality of baffles (13), the cotton pad (9) are formed between the adjacent ventilation groove of cotton pad (9) in the inner wall bonding of baffle (13) and fixed frame (8).
2. The low noise wearable air conditioner of claim 1, wherein: the novel heat exchanger is characterized in that the outer shell (14) is of a box body structure, the main soundproof cotton (7) is flatly paved on the inner wall of the outer shell (14), a water outlet of the water pump (26) is connected with one end of the heat exchanger (23) through a pipeline, the other end of the heat exchanger (23) is connected with one end of a cooling pipeline, a water inlet of the water pump (26) is connected with the other end of the cooling pipeline, a gas outlet of the compressor (22) is connected with a gas inlet of the condenser (21) through a copper pipe, a gas outlet of the condenser (21) is connected with a gas inlet of the heat exchanger (23) through a copper pipe, and a gas outlet of the heat exchanger (23) is connected with a gas inlet of the compressor (22).
3. The low noise wearable air conditioner of claim 1, wherein: the fixed frame (8) is of a square frame structure, a notch for adaptively installing the fixed frame (8) is formed in the side face of the outer shell (14), and the ventilation groove (10) is of a flat square through groove structure.
4. The low noise wearable air conditioner of claim 1, wherein: the edge of the soundproof cotton pad (9) is flush with the edge of the partition board (13).
5. The low noise wearable air conditioner of claim 1, wherein: the upper end face and the lower end face of the support column (6) are respectively welded with the bottom face of the bottom plate (5) and the inner bottom face of the outer shell (14), and the number of the support columns (6) is four and are respectively arranged at four corners of the bottom plate (5).
6. The low noise wearable air conditioner of claim 1, wherein: the bottom plate (5) is of a flat square plate structure, and the bottom surface of the clamping plate (42) is provided with a groove body which is matched with the cover and is arranged on the corner of the inner frame body (1).
7. The low noise wearable air conditioner of claim 1, wherein: the lower cushion pad (41) is adhered to the inner wall of the clamping plate (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223283690.5U CN218921754U (en) | 2022-12-08 | 2022-12-08 | Low-noise wearable air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223283690.5U CN218921754U (en) | 2022-12-08 | 2022-12-08 | Low-noise wearable air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218921754U true CN218921754U (en) | 2023-04-28 |
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ID=86094653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223283690.5U Active CN218921754U (en) | 2022-12-08 | 2022-12-08 | Low-noise wearable air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218921754U (en) |
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2022
- 2022-12-08 CN CN202223283690.5U patent/CN218921754U/en active Active
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