CN220103306U - Fresh air unit - Google Patents
Fresh air unit Download PDFInfo
- Publication number
- CN220103306U CN220103306U CN202321605311.1U CN202321605311U CN220103306U CN 220103306 U CN220103306 U CN 220103306U CN 202321605311 U CN202321605311 U CN 202321605311U CN 220103306 U CN220103306 U CN 220103306U
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- China
- Prior art keywords
- assembly
- air
- heat exchange
- fresh air
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004140 cleaning Methods 0.000 claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000007921 spray Substances 0.000 claims description 3
- 230000036541 health Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Central Air Conditioning (AREA)
Abstract
The utility model discloses a fresh air handling unit, comprising: the air conditioner comprises a frame, a first cleaning assembly, a heat exchange assembly, a fan assembly, a second cleaning assembly and an electric box, wherein an air inlet is formed in the lower portion of the frame, an air outlet is formed in the top of the frame, a ventilation channel is formed in the interior of the frame and is communicated with the air inlet and the air outlet respectively, the fan assembly is arranged in the ventilation channel and is located below the air outlet, the heat exchange assembly is arranged below the fan assembly, the first cleaning assembly is arranged below the heat exchange assembly, the second cleaning assembly is arranged above the fan assembly, and the electric box is arranged in the frame and is arranged at intervals with the fan assembly. The utility model cleans the air before and after heat exchange, ensures that the purity coefficient of the discharged fresh air is high, and effectively protects the health and safety of human bodies.
Description
Technical Field
The utility model relates to the technical field of fresh air equipment, in particular to a fresh air handling unit.
Background
The fresh air handling unit is an air conditioning apparatus that provides fresh air. The working principle is that fresh air is extracted outdoors and sent indoors through a fan after being subjected to dust removal, dehumidification or humidification, temperature reduction or temperature rise and other treatments, and the original indoor air is replaced when the fresh air enters an indoor space. In the existing fresh air handling unit, a filter screen is often arranged at an air inlet, air is filtered through the filter screen, the filtering effect is very low, the purpose of deep purification cannot be achieved, and for the fresh air handling unit used for a long time, the quality of discharged fresh air is low, so that bad influence can be caused on the health of a human body.
Disclosure of Invention
The aim of the embodiment of the utility model is that: the utility model provides a fresh air handling unit, it can solve the above-mentioned problem that exists among the prior art, all carries out cleaning treatment to the air around the heat transfer, ensures that the pure coefficient of exhaust fresh air is high, effectively protects human health and safety.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in one aspect, a fresh air handling unit is provided, including: the air conditioner comprises a frame, a first cleaning assembly, a heat exchange assembly, a fan assembly, a second cleaning assembly and an electric box, wherein an air inlet is formed in the lower portion of the frame, an air outlet is formed in the top of the frame, a ventilation channel is formed in the interior of the frame and is communicated with the air inlet and the air outlet respectively, the fan assembly is arranged in the ventilation channel and is located below the air outlet, the heat exchange assembly is arranged below the fan assembly, the first cleaning assembly is arranged below the heat exchange assembly, the second cleaning assembly is arranged above the fan assembly, and the electric box is arranged in the frame and is arranged at intervals with the fan assembly.
Optionally, the first cleaning component is a primary filter screen, the second cleaning component is a secondary filter screen, and the mesh diameter of the secondary filter screen is smaller than that of the primary filter screen.
Optionally, a buffer box is further arranged above the air outlet.
Optionally, a fan valve assembly is arranged at the air inlet and used for controlling the opening and closing of the air inlet.
Optionally, the heat exchange component is V-shaped.
Optionally, the heat exchange assembly comprises a V-shaped air outlet cavity and air inlet cavities positioned on two sides of the air outlet cavity.
Optionally, the device further comprises an ultrasonic humidifier, wherein the inlet end of the ultrasonic humidifier is connected with a water inlet pipe, the outlet end of the ultrasonic humidifier is connected with a water outlet pipe, the water outlet pipe extends into the V-shaped air outlet cavity, and a part of the water outlet pipe located in the V-shaped air outlet cavity is provided with a plurality of spray openings.
Optionally, be provided with inside casing subassembly in the frame, inside casing subassembly install in the ventilation channel, and with the air outlet intercommunication, inside casing subassembly's inside is formed with the installation cavity, fan subassembly install in the installation cavity, heat transfer subassembly install in the installation cavity and be located fan subassembly's below.
Optionally, a water receiving chassis is arranged below the heat exchange assembly.
Optionally, an air pipe is connected to the air outlet, and a humidifying component is arranged at the outlet end of the air pipe.
The beneficial effects of the utility model are as follows: in the ventilation channel of air entering frame through the air intake, by ventilation channel's below under fan assembly's drive gradually upwards remove, earlier carry out preliminary clean filtration through first clean subassembly, filter great granule dust in the air, avoid polluting harm heat exchange assembly, the air after the preliminary filtration carries out the heat exchange in getting into the heat exchange assembly, the air after the heat exchange is accomplished continues upwards remove under fan assembly's drive, then carry out the clean processing of degree of depth at the clean subassembly of second, further filter out the pollutant in the air after the heat exchange, at last through the fresh air of air outlet exhaust just is clean, can not cause the influence to human health, and then promote the use comfort of fresh air unit.
Drawings
The utility model is described in further detail below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an internal structure of a fresh air handling unit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an internal structure of a fresh air handling unit according to an embodiment of the present utility model;
FIG. 3 is a schematic view showing the internal structure of the inner frame assembly according to the embodiment of the present utility model;
FIG. 4 is a schematic diagram illustrating an assembly of a heat exchange assembly and an ultrasonic humidifier according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a heat exchange assembly according to an embodiment of the present utility model.
In the figure:
1. a frame; 2. a first cleaning assembly; 3. a heat exchange assembly; 301. v-shaped air outlet cavity; 302. a first end plate; 303. a second end plate; 304. a heat exchange tube; 4. a fan assembly; 5. a second cleaning assembly; 6. a ventilation channel; 7. a new wind gap; 8. an air return port; 9. a buffer tank; 10. an inner frame assembly; 11. an air duct; 12. a humidifying assembly; 13. an ultrasonic humidifier; 14. a water receiving chassis; 15. and a water outlet pipe.
Detailed Description
In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1-5, this embodiment provides a fresh air handling unit, which includes: the air conditioner comprises a frame 1, a first cleaning assembly 2, a heat exchange assembly 3, a fan assembly 4, a second cleaning assembly 5 and an electric box, wherein an air inlet is formed in the lower portion of the frame 1, an air outlet is formed in the top of the frame 1, a ventilation channel 6 is formed in the frame 1 and is communicated with the air inlet and the air outlet respectively, the fan assembly 4 is installed in the ventilation channel 6 and is located below the air outlet, the heat exchange assembly 3 is installed below the fan assembly 4, the first cleaning assembly 2 is installed below the heat exchange assembly 3, the second cleaning assembly 5 is installed above the fan assembly 4, and the electric box is installed in the frame 1 and is arranged with the fan assembly 4 at intervals.
Based on the above scheme, under the drive of fan subassembly 4, the air in the environment gets into the inside ventilation passageway 6 of frame 1 through the air intake of frame 1 below, and be located ventilation passageway 6's below, the purpose of design like this is in order to guarantee to have sufficient processing space after the air inlet, the air that is located ventilation passageway 6 below can carry out preliminary filtration clean through first clean subassembly 2 earlier, mainly be the effect of a filtration dust and other granule, avoid not clean air to cause pollution or damage to heat transfer subassembly 3, the heat transfer is carried out through heat transfer subassembly 3 again to clean air, the heat transfer here can be cold wind to hot wind, or hot wind to cold wind, adjust according to different fresh air temperature demands, the clean filtration of degree of depth is carried out to the air after the heat transfer continues to be passed through second clean subassembly 5 under the drive of fan subassembly 4, the clean effect of second clean subassembly 5 can be better than the clean effect of first clean subassembly 2 here, can be with the unable filterable pollutant of first clean subassembly 2 filtration, the clean process's air can be discharged to indoor use as the fresh air from the air outlet, the clean of pollution-free, the user has no pollution, the reliability and safety and reliability are all showing and are obtained.
Specifically, the first cleaning component 2 is a primary filter screen, and the second cleaning component 5 is a secondary filter screen, and the mesh diameter of the secondary filter screen is smaller than that of the primary filter screen. Through setting up two filter screens, and the filtration aperture of two filter screens is different, and the one-level filter screen is clean as preliminary filtration, and the second grade filter screen is clean as the secondary filtration at back, avoids appearing unfiltered clean condition appearance, and two filter screens can guarantee to the utmost that clean degree reaches the requirement of airing exhaust.
Preferably, a buffer box 9 is also arranged above the air outlet. The fresh air after heat exchange and secondary cleaning can firstly enter the buffer box 9 for buffering under the drive of the fan assembly 4, because the area of the buffer box 9 in the horizontal direction is the same as the area of the frame 1, that is to say, the wind speed of the fresh air is unchanged and larger noise can not be generated in the process of entering the buffer box 9 from the frame 1, the larger noise can not be generated here, compared with the case that the fresh air directly enters the air pipe 11, the air inlet area of the air pipe 11 is definitely smaller than the air outlet area of the frame 1, the fresh air enters the small air outlet from the large air outlet, larger noise is necessarily generated under the condition that the wind speed is unchanged, the problem that the noise is large can be effectively solved by arranging the buffer box 9 capable of buffering the fresh air in the buffer box 9, the wind speed is reduced, the large noise can not be generated in the process of entering the air pipe 11, the use process of a user can not feel obvious noise change, the user can feel more comfortable and comfortable when using the fresh air pipe is used, and a satisfactory use environment can be created.
Optionally, air intake department is provided with the fan valve subassembly, the fan valve subassembly is used for controlling the opening and closing of air intake, the air intake is including fresh air inlet 7 and the return air inlet 8 that set up side by side, all is provided with the fan valve subassembly on fresh air inlet 7 and the return air inlet 8, can realize the air inlet control to fresh air inlet 7 and return air inlet 8 through the fan valve subassembly, reaches the purpose of accurate control intake.
In some embodiments, the heat exchange assembly 3 is V-shaped, the heat exchange assembly 3 includes a first end plate 302 and a second end plate 303 which are arranged in a V-shape, and heat exchange tubes 304 penetrating through the first end plate 302 and the second end plate 303, air inlet cavities are respectively formed between the outer side surfaces of the first end plate 302 and the second end plate 303 and the inner wall of the frame 1, a V-shaped air outlet cavity 301 is formed between the opposite inner side surfaces of the first end plate 302 and the second end plate 303, and the V-shaped air outlet cavity 301 is opposite to the fan assembly 4. Because the first end plate 302 and the second end plate 303 are connected in a V-shape, the bottom ends of the first end plate 302 and the second end plate 303 are connected and positioned below, and the top ends are positioned above and horizontally spaced apart, so that an air inlet cavity is formed between the first end plate 302 and the inner wall of the frame 1, and a further air inlet cavity is formed between the same air inlet cavity of the second end plate 303 and the inner wall of the frame 1, that is, the heat exchange assembly 3 has two air inlet cavities, the largest heat exchange area of the air inlet cavities is the area of the first end plate 302 and the area of the second end plate 303, and compared with a plate-type heat exchanger with only one heat exchange area, the heat exchange area of the heat exchange assembly 3 in the scheme is the area of the first end plate 302 and the area of the second end plate 303 are combined, the heat exchange area is definitely larger, the heat exchange efficiency is higher, the heat exchange can be more sufficient, and even if a large amount of air is introduced at one time, the air can realize efficient heat exchange, and after the air enters the air exchange tube 304 on the first end plate 302 and the second end plate 303 for sufficient heat exchange, the air exchange assembly moves upwards and then is discharged.
The refrigerant enters the heat exchange tube 304 from the compressor through the input tube, flows in the heat exchange tube 304, and returns to the compressor through the output tube after heat exchange.
Further, the device also comprises an ultrasonic humidifier 13, the inlet end of the ultrasonic humidifier 13 is connected with a water inlet pipe, the outlet end of the ultrasonic humidifier is connected with a water outlet pipe 15, the water outlet pipe 15 extends into the V-shaped air outlet cavity 301, and a plurality of spray openings are formed in the water outlet pipe 15 at the part of the water outlet pipe positioned in the V-shaped air outlet cavity 301. After the air heat exchange is finished, when humidification is needed, the water subjected to ultrasonic treatment in the ultrasonic humidifier 13 enters the water outlet pipe 15 through the outlet end of the water outlet pipe, flows to each spraying opening along the water outlet pipe 15 to be sprayed out, and the sprayed water is in mist form, so that the water can be better and fully contacted with the air to complete humidification, and the humidification is finished. In addition, the inlet end of the ultrasonic humidifier 13 is connectable to an external water supply device through a water inlet pipe, so that the water source in the ultrasonic humidifier 13 can be always kept sufficient, and even if water is replenished. The air humidified by the ultrasonic humidifier 13 is purer, pollution is avoided, and the air is discharged indoors to avoid affecting the respiratory tract of a human body, so that the health of a user is ensured.
Meanwhile, considering the situation that water drops fall after humidification, a water receiving chassis 14 is arranged below the ventilation channel 6, all falling water can be received through the water receiving chassis 14, a mounting base is arranged between the ultrasonic humidifier 13 and the water receiving chassis 14, and the ultrasonic humidifier 13 is prevented from being in direct contact with the water on the water receiving chassis 14 through the mounting base, so that unnecessary faults are avoided.
In addition, be provided with inside casing subassembly 10 in the frame 1, inside casing subassembly 10 install in ventilation channel 6, and with the air outlet intercommunication, inside casing subassembly 10's inside is formed with the installation cavity, fan subassembly 4 install in the installation cavity, heat transfer subassembly 3 install in the installation cavity and be located the below of fan subassembly 4. The air in the ventilation channel 6 can enter the inner frame assembly 10 under the continuous driving of the fan assembly 4, and is subjected to heat exchange with the heat exchange assembly 3 arranged in the inner frame assembly 10, and in the heat exchange process, the inner frame assembly 10 is isolated relative to the frame 1, and the heat insulation layers are arranged on the peripheral surfaces of the inner frame assembly 10, so that the heat loss of the heat exchange assembly 3 can be effectively prevented, the heat exchange assembly 3 can be subjected to full heat exchange with the air, the heat exchange efficiency can be fully ensured, the air after the heat exchange can continue to move upwards, and the top of the inner frame assembly 10 is communicated with the air outlet, so that the air in the inner frame assembly 10 can be directly discharged in a heat insulation state, the heat loss of the air after the heat exchange can not occur, the discharged air can be ensured to meet the requirements, the heat resources can be reasonably and fully utilized, and the overall working efficiency of the fresh air unit can be improved.
Optionally, the air outlet is connected with an air pipe 11, the air pipe 11 is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the buffer box 9, and the air outlet end is connected with a humidifying component 12. Fresh air in the buffer box 9 enters the air pipe 11 through the air inlet end and is discharged through the air outlet end, and when the fresh air is discharged, the fresh air can be humidified by the humidifying component 12 according to requirements, so that the discharged fresh air is moist and is suitable for a dry environment.
It is worth mentioning that return air inlet 8 is connected to indoor, and fresh air through tuber pipe 11 exhaust enters the air inlet intracavity through return air inlet 8 after indoor circulation, discharges after handling again, and fresh air inlet 7 and return air inlet 8 are set up side by side, can more convenient operation when connecting the pipeline like this, and fresh air inlet 7 and return air inlet 8 all set up in the below of frame 1 moreover, and tuber pipe 11 then is set up at the top of frame 1, and fresh air in fresh air inlet 7 and return air inlet 8 get into frame 1 like this has sufficient processing space, guarantees to handle the fresh air and discharges the fresh air and use again after the completion.
Optionally, the air duct 11 may be designed into a linear air duct 11 or a right-angle bent air duct 11 according to different ventilation requirements.
In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. A fresh air handling unit, comprising: frame (1), first clean subassembly (2), heat exchange component (3), fan subassembly (4), clean subassembly of second (5) and electrical apparatus box, the air intake has been seted up to the below of frame (1), the air outlet has been seted up at the top, the inside of frame (1) is formed with ventilation channel (6), ventilation channel (6) respectively with the air intake the air outlet intercommunication, fan subassembly (4) install in ventilation channel (6) and be located the below of air outlet, heat exchange component (3) install in the below of fan subassembly (4), first clean subassembly (2) install in the below of heat exchange component (3), second clean subassembly (5) install in the top of fan subassembly (4), electrical apparatus box install in frame (1), and with fan subassembly (4) interval arrangement.
2. Fresh air handling unit according to claim 1, wherein the first cleaning assembly (2) is a primary filter screen and the second cleaning assembly (5) is a secondary filter screen having a mesh diameter smaller than the mesh diameter of the primary filter screen.
3. Fresh air handling unit according to claim 1 or 2, characterized in that a buffer tank (9) is also arranged above the air outlet.
4. The fresh air handling unit according to claim 1 or 2, wherein a fan valve assembly is provided at the air intake, the fan valve assembly being adapted to control opening and closing of the air intake.
5. Fresh air handling unit according to claim 1 or 2, characterized in that the heat exchange assembly (3) has a V-shape.
6. The fresh air handling unit according to claim 4, wherein the heat exchange assembly (3) comprises a V-shaped air outlet chamber (301) and air inlet chambers located on both sides of the air outlet chamber.
7. The fresh air handling unit according to claim 6, further comprising an ultrasonic humidifier (13), wherein an inlet end of the ultrasonic humidifier (13) is connected with a water inlet pipe, an outlet end of the ultrasonic humidifier is connected with a water outlet pipe (15), the water outlet pipe (15) extends into the V-shaped air outlet cavity (301), and a plurality of spray openings are formed in a part of the water outlet pipe (15) located in the V-shaped air outlet cavity (301).
8. Fresh air handling unit according to claim 1 or 2, characterized in that an inner frame assembly (10) is arranged in the frame (1), the inner frame assembly (10) is mounted in the ventilation channel (6) and is communicated with the air outlet, a mounting cavity is formed in the inner frame assembly (10), the fan assembly (4) is mounted in the mounting cavity, and the heat exchange assembly (3) is mounted in the mounting cavity and is located below the fan assembly (4).
9. Fresh air handling unit according to claim 1 or 2, characterized in that a water receiving chassis (14) is arranged below the heat exchange assembly (3).
10. Fresh air handling unit according to claim 1 or 2, characterized in that the air outlet is connected with an air duct (11), the outlet end of the air duct (11) being provided with a humidifying assembly (12).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321605311.1U CN220103306U (en) | 2023-06-21 | 2023-06-21 | Fresh air unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321605311.1U CN220103306U (en) | 2023-06-21 | 2023-06-21 | Fresh air unit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN220103306U true CN220103306U (en) | 2023-11-28 |
Family
ID=88840967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202321605311.1U Active CN220103306U (en) | 2023-06-21 | 2023-06-21 | Fresh air unit |
Country Status (1)
Country | Link |
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CN (1) | CN220103306U (en) |
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2023
- 2023-06-21 CN CN202321605311.1U patent/CN220103306U/en active Active
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