CN210951726U - Multifunctional fresh air fan - Google Patents
Multifunctional fresh air fan Download PDFInfo
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- CN210951726U CN210951726U CN201921351711.8U CN201921351711U CN210951726U CN 210951726 U CN210951726 U CN 210951726U CN 201921351711 U CN201921351711 U CN 201921351711U CN 210951726 U CN210951726 U CN 210951726U
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Abstract
A multifunctional fresh air fan comprises a functional module and a fresh air circulating module, wherein the functional module and the fresh air circulating module respectively comprise circulating cavities which are independently arranged, a circulating fan is arranged in the functional module, and the circulating fan is arranged in a first guide volute; the fresh air circulating module comprises two fan impellers vertically arranged upwards and downwards in a stacked mode, the two fan impellers are coaxially arranged and are arranged on an output shaft of a fresh air driving motor together, the two fan impellers are arranged in a second guide volute, a fresh air duct and an exhaust air duct are arranged in the second guide volute and are mutually independent, different air outlet ducts respectively correspond to one fan impeller, and the corresponding fan impellers are used as power sources to drive air flow. The utility model discloses the space occupies for a short time, and the integrated level is high, and effective integrated heating function, illumination function effectively reduce equipment fixing and maintenance cost.
Description
Technical Field
The utility model relates to a new trend system field for the house, concretely relates to collect send new trend, air exhaust, heating function multi-functional new fan as an organic whole.
Background
The fresh air machine is used as a device which can introduce outdoor fresh air into a room and discharge indoor dirty air, can effectively reduce the content of harmful gases such as indoor carbon dioxide concentration, formaldehyde, benzene and the like, increases the oxygen content and prevents air conditioning diseases. Meanwhile, an air filter is also arranged in the fresh air fan, bacteria, particulate matters (PM 2.5) and other harmful substances in the fresh air are filtered through the air filter, and the cleanliness of the fresh air introduced into the room is guaranteed.
The existing residence is provided with the fresh air machine, most of the fresh air machine is arranged in a suspended ceiling of a washroom or a kitchen, meanwhile, a bathroom heater or a cooling heater can also be arranged in the washroom or the kitchen, and the situation that the installation spaces are mutually extruded is easy to occur. In addition, in the prior art, the function of new fan is comparatively single, can only solve to send, exhaust to indoor, and installation cost is higher, wants to realize new trend, bathroom heater or the case of cold heater function, must install two different equipment, wastes time and energy, and occupation space is more, increases installation and follow-up maintenance cost. There is also a technical scheme of adding fresh air function to the bathroom heater, namely, the air intake and exhaust functions are realized by the fan reversing scheme. However, the fresh air is only sent to a local space, the fresh air in the whole house cannot be realized, and the continuous circulation of the air sending and returning cannot be realized.
Disclosure of Invention
The utility model provides a technical problem provide a multi-functional new fan, this equipment improves to the defect that current new fan function is single, does not need the independent installation pipeline, can effectively reduce installation cost to and equipment fixing and maintenance cost.
The utility model provides a technical problem adopt following technical scheme to realize:
a multifunctional fresh air fan is used for being installed indoors and comprises a functional module and a fresh air circulating module, wherein the functional module and the fresh air circulating module respectively comprise circulating cavities which are independently arranged, a circulating fan is arranged in the functional module, and the circulating fan is installed in a first guide volute; the fresh air circulating module comprises two fan impellers vertically arranged upwards and downwards in a stacked mode, the two fan impellers are coaxially arranged and are arranged on an output shaft of a fresh air driving motor together, the two fan impellers are arranged in a second guide volute, a fresh air duct and an exhaust air duct are arranged in the second guide volute and are mutually independent, different air outlet ducts respectively correspond to one fan impeller, and the corresponding fan impellers are used as power sources to drive air flow.
As a further limitation, the fresh air circulation module and the function module are sealed through an equipment panel at the same side, the equipment panel faces indoors when being installed, and a fixing buckle used for fixing the equipment on the suspended ceiling is arranged on the equipment panel.
As a further limitation, the air inlet of the functional module faces indoors, the air outlet faces outdoors, and the functional module is also provided with a functional air return opening facing indoors, and when the functional module is used as a bathroom heater, the air duct at the inner side of the functional air return opening is provided with a heating device.
As a further limitation, the air inlet and the functional air return inlet of the functional module are arranged on the equipment panel, and meanwhile, the equipment panel is also provided with an illumination unit and an equipment operation state display device.
By way of further limitation, the exhaust air duct in the functional module is located on one side close to the equipment panel, and an exhaust air inlet facing the louver structure in the installation area chamber is arranged on the equipment panel at a position corresponding to the second guide volute.
As a further limitation, the air exhaust duct in the fresh air circulation module is located at one side close to the equipment panel, and an air exhaust inlet facing the louver structure in the installation area chamber is arranged at a position on the equipment panel corresponding to the second guide volute and serves as a second air exhaust inlet.
As a further limitation, two fan impellers in the fresh air circulation module respectively correspond to the fresh air duct and the exhaust air duct; and the fresh air driving motor is arranged in a gap space between the two fan impellers arranged in a back-to-back manner so as to reduce the occupation of a vertical space.
As a further limitation, two independent air inlet openings which are not influenced mutually are arranged on the second guide volute, and each air inlet opening corresponds to one air outlet channel; and in order to improve the air quality of the fresh air inlet, an air processor is also arranged on the fresh air channel.
As a further limitation, branch pipelines are connected to a fresh air duct air outlet and an exhaust air duct air inlet in the fresh air circulation module, and are selectively connected with each room in the room through different branch pipelines.
Has the advantages that: the multifunctional fresh air machine of the utility model integrates the functions of fresh air, air exhaust and heating, and can effectively save the installation space, can send the fresh air into the room through the pipeline, and can realize the simultaneous operation of sending the fresh air and exhausting air by connecting the exhaust pipeline through the independent double-air-channel structure, thereby really realizing the timely discharge of indoor old air while sending fresh clean air into the room; meanwhile, when the heating function is used, the fresh air function can also work independently to ensure that the fresh air runs for 24 hours, and in addition, the independent fresh air or the air exhaust function can also be enhanced through the switching of the clutch mechanism.
Drawings
Fig. 1 is a schematic view of a self-contained structure according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the exploded structure of fig. 1.
Fig. 3 is a schematic view of the internal structure of the embodiment of fig. 1.
Wherein: 1. a panel; 2. a first exhaust air inlet; 3. an exhaust impeller; 4. a fresh air/exhaust driving motor; 5. a volute of an exhaust air duct; 6. an air heating device; 7. a housing; 8. a heating/exhaust driving motor; 9. a heating fan impeller; 10. a heating/exhaust duct volute; 11. a fresh air outlet; 12. an air handler access port; 13. an air handler; 14. a fresh air impeller; 15. a fresh air duct volute; 16. an air exhaust outlet; 17. a fresh air inlet; 18. a heating/blowing air outlet; 19. an exhaust outlet; 20. a heating/exhaust air inlet; 21. a second air exhaust inlet; 22. a lighting unit; 23. a status display panel; 24. a partition plate; 25. clutch type coupling.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1 to 3, in the first embodiment, the multifunctional fresh air machine includes a housing 7, and a left and a right independent cavities are formed inside the housing 7 and are sealed by a panel 1 on the surfaces of the two independent cavities. The right chamber in the housing 7 is a functional module area, a heating fan is formed in the housing, the heating fan includes a heating fan impeller 9, the heating fan impeller 9 is formed in a heating/exhaust air duct volute 10, and is driven by a heating/exhaust driving motor 8, and two air outlets are formed at the outer side of the heating/exhaust air duct volute 10, one of the air outlets is an exhaust outlet 19, the exhaust outlet 19 is an air outlet of a functional module and is connected to the outside through a pipeline, and the other air outlet is a functional return air inlet, which is a heating/blowing air outlet 18 in this embodiment, and is disposed on the panel 1 and faces the indoor, and an air heating device 6 is disposed at the inner side of the heating/blowing air outlet 18.
The left chamber in the shell 7 is a fresh air circulation module area, the fresh air circulation module comprises two fan impellers which are axially stacked, namely a fresh air impeller 14 and an exhaust impeller 3, the two fan impellers are coaxially arranged and assembled on two side shaft extensions of the same fresh air/exhaust driving motor 4, in order to save assembly space, the fresh air/exhaust driving motor 4 is arranged between the fresh air impeller 14 and the exhaust impeller 3, the fresh air impeller 14 is arranged in a fresh air duct volute 15, the exhaust impeller 3 is arranged in an exhaust air duct volute 5, meanwhile, the fresh air duct volute 15 and the exhaust air duct volute 5 are separated into mutually independent air ducts through a partition plate 24, the fresh air duct volute 15 and the exhaust air duct volute 5 are arranged in an up-down stacked mode, the exhaust air duct volute 5 is arranged on the upper portion and corresponds to an exhaust air duct in the fresh air circulation module, and the exhaust impeller, the fresh air duct volute 15 is arranged below and corresponds to a fresh air duct, and the fresh air impeller 14 is used as an air power source; meanwhile, a first exhaust air inlet 2 corresponding to an exhaust air duct and a fresh air outlet 11 corresponding to a fresh air duct in the fresh air circulation module face indoors, an exhaust air outlet 16 of the exhaust air duct and a fresh air inlet 17 of the fresh air duct face outdoors, branch pipelines are connected to the tail ends of the fresh air outlet 11 and the first exhaust air inlet 2, and all indoor sections are selectively connected through the different branch pipelines so as to improve the application scene range of the equipment; in addition, an air processor 13 is further disposed on an end face of the fresh air duct volute 15, and the air processor includes, but is not limited to, an electrostatic precipitator, an RGF active purification unit, a purification filter element, an anion generator, and an air humidifier, and can be used to improve the quality of fresh air entering a room.
When the multifunctional fresh air machine is used, all the parts are assembled according to the figure, and then the multifunctional fresh air machine is fixed on the ceiling of a bathroom through a fixing buckle at the outer side of the position of the panel 1 of the equipment. When the fresh air part is used, the fresh air/exhaust driving motor 4 and the fresh air impeller 14 jointly act to provide power, and fresh air is introduced from the outside through a pipeline by the fresh air inlet 17, is processed by the air processor 13 and is sent into the room through the fresh air outlet 11; meanwhile, the indoor old air can be powered by the fresh air/exhaust driving motor 4 and the exhaust impeller 3, and the old air is introduced from the indoor through the first exhaust air inlet 2 and the pipeline and is sent out of the room through the exhaust air outlet 16.
When heating or blowing is needed, the heating/exhaust driving motor 8 provides power to drive the impeller 9 of the heating fan, indoor air enters through the heating/exhaust air inlet 20, is heated through the air heating device 6, and is blown into the room through the heating/blowing air outlet 18 for heating, and at the moment, the exhaust air outlet 19 is closed through an internal valve to realize function switching.
When the indoor air is exhausted, the heating/exhaust driving motor 8 provides power to drive the heating fan impeller 9, indoor air enters through the heating/exhaust air inlet 20, is connected with the pipeline through the exhaust outlet 19 and is exhausted out of the room through the pipeline, and at the moment, the valve of the exhaust outlet 19 is opened and is led to the heating/blowing air outlet 18 side to be closed.
In another embodiment of this embodiment, the functional air return opening of the functional module is an air blowing opening, and is also disposed on the panel 1 and faces the indoor side, and the inside of the heating/air blowing air outlet 18 is directly connected to the air outlet of the heating/air discharging air duct volute 10.
In the second embodiment of this patent, the multifunctional new fan includes a housing 7, and the inside of this housing 7 is formed with two independent chambers, left and right, and is sealed through the panel 1 on the surface of two independent chambers. The right chamber in the housing 7 is a functional module area, a heating fan is formed therein, the heating fan includes a heating fan impeller 9, the heating fan impeller 9 is formed in a heating/exhaust air duct volute 10, and is driven by a heating/exhaust driving motor 8, and two air outlets are formed at the outer side of the heating/exhaust air duct volute 10, one of the air outlets is an exhaust outlet 19, the exhaust outlet 19 is an air outlet of a functional module and is connected to the outside through a pipe, and the other air outlet is a functional return air outlet, which is a heating/blowing air outlet 18 in this embodiment, is disposed on the panel 1 and faces the indoor, and an air heating device 6 is disposed at the inner side of the heating/blowing air outlet 18, and can be used as a bathroom heater in a bathroom.
In another embodiment of this embodiment, the functional air return opening of the functional module is an air blowing opening, and is also disposed on the panel 1 and faces the indoor side, and the inner side of the heating/air blowing air outlet 18 is directly connected to the air outlet of the heating/air discharging air duct volute 10, so that the functional module can be used as a cooling device in a kitchen.
The left chamber in the shell 7 is a fresh air circulation module area, the fresh air circulation module comprises two fan impellers which are axially stacked, namely a fresh air impeller 14 and an exhaust impeller 3, the two fan impellers are coaxially arranged and assembled on two side shaft extensions of the same fresh air/exhaust driving motor 4, in order to save assembly space, the fresh air/exhaust driving motor 4 is arranged between the fresh air impeller 14 and the exhaust impeller 3, the fresh air impeller 14 is arranged in a fresh air duct volute 15, the exhaust impeller 3 is arranged in an exhaust air duct volute 5, meanwhile, the fresh air duct volute 15 and the exhaust air duct volute 5 are separated into mutually independent air ducts through a partition plate 24, the fresh air duct volute 15 and the exhaust air duct volute 5 are stacked up and down, the exhaust air duct volute 5 is arranged on the upper part and corresponds to an exhaust air duct in the fresh air circulation module, and the exhaust impeller 3 is used as an, the fresh air duct volute 15 is arranged below and corresponds to a fresh air duct, and the fresh air impeller 14 is used as an air power source; meanwhile, a first exhaust air inlet 2 of an exhaust air duct and a fresh air outlet 11 of a fresh air duct in the fresh air circulation module face indoors, an exhaust air outlet 16 of the exhaust air duct and a fresh air inlet 17 of the fresh air duct face outdoors, branch pipelines are connected to the tail ends of the fresh air outlet 11 and the first exhaust air inlet 2, and all indoor sections are selectively connected through different branch pipelines so as to improve the application scene range of the equipment; in addition, an air processor 13 is arranged on the end face of the fresh air duct volute 15 and can be used for improving the quality of fresh air entering a room.
When the multifunctional fresh air machine is used, all the parts are assembled according to the figure, and then the multifunctional fresh air machine is fixed on the ceiling of a bathroom through a fixing buckle at the outer side of the position of the panel 1 of the equipment. When the fresh air part is used, the fresh air/exhaust driving motor 4 and the fresh air impeller 14 jointly act to provide power, and fresh air is introduced from the outside through a pipeline by the fresh air inlet 17, is processed by the air processor 13 and is sent into the room through the fresh air outlet 11; meanwhile, the indoor old air can be powered by the fresh air/exhaust driving motor 4 and the exhaust impeller 3, and the old air is introduced from the indoor through the first exhaust air inlet 2 and the pipeline and is sent out of the room through the exhaust air outlet 16.
When heating or blowing is needed, the heating/exhaust driving motor 8 provides power to drive the impeller 9 of the heating fan, indoor air enters through the heating/exhaust air inlet 20, is heated through the air heating device 6, and is blown into the room through the heating/blowing air outlet 18 for heating, and at the moment, the internal valve of the exhaust outlet 19 is closed to realize function switching.
When the indoor air is exhausted, the heating/exhaust driving motor 8 provides power to drive the heating fan impeller 9, indoor air enters through the heating/exhaust air inlet 20 and is exhausted out of the room through the pipeline after being connected with the pipeline through the exhaust outlet 19, and at the moment, the valve of the exhaust outlet 19 is opened and then the valve is closed to the heating/blowing air outlet 18 side.
The right side portion of the panel 1 of this example is a reserved space, and a second exhaust air intake port 21, an illumination unit 22, and/or a status display panel 23 for displaying the operation status of the apparatus may be optionally installed.
In addition, the second exhaust air inlet 21 of the fresh air module can be opened, so that the indoor air is introduced from the indoor into the exhaust air duct volute 5 through the second exhaust air inlet 21 and the first exhaust air inlet 2 through the pipeline and is exhausted to the outdoor through the exhaust air outlet 16. The effect of strengthening indoor exhaust is reached.
In the third embodiment of this patent, the multifunctional fresh air machine includes a housing 7, and the inside of the housing 7 is formed with a left and a right independent chambers, and is sealed by the panel 1 on the surfaces of the two independent chambers. The right chamber in the housing 7 is a functional module area, a heating fan is formed in the housing, the heating fan includes a heating fan impeller 9, the heating fan impeller 9 is formed in a heating/exhaust air duct volute 10, and is driven by a heating/exhaust driving motor 8, and two air outlets are formed at the outer side of the heating/exhaust air duct volute 10, one of the air outlets is an exhaust outlet 19, the exhaust outlet 19 is an air outlet of a functional module and is connected to the outside through a pipeline, and the other air outlet is a functional return air inlet, which is a heating/blowing air outlet 18 in this embodiment, and is disposed on the panel 1 and faces the indoor, and an air heating device 6 is disposed at the inner side of the heating/blowing air outlet 18. In another embodiment, the functional air return opening of the functional module is an air blowing opening, which is also disposed on the panel 1 and faces the indoor side, and the inner side of the heating/air blowing air outlet 18 is directly connected to the air outlet of the heating/air discharging duct volute 10.
The left chamber in the shell 7 is a fresh air circulation module area, the fresh air circulation module comprises two fan impellers which are axially stacked, namely a fresh air impeller 14 and an exhaust impeller 3, the two fan impellers are coaxially arranged and assembled on two side shaft extensions of the same fresh air/exhaust driving motor 4 through a clutch coupling 25, in order to save assembly space, the fresh air/exhaust driving motor 4 is arranged between the fresh air impeller 14 and the exhaust impeller 3, the fresh air impeller 14 is arranged in a fresh air duct volute 15, the exhaust impeller 3 is arranged in an exhaust air duct volute 5, meanwhile, the fresh air duct volute 15 and the exhaust air duct volute 5 are separated into mutually independent air ducts through a partition plate 24, the fresh air duct volute 15 and the exhaust air duct volute 5 are arranged in a vertically stacked manner, the exhaust air duct volute 5 is arranged on the upper side, the exhaust air duct corresponds to the exhaust air duct in the fresh air circulation module area, and, the fresh air duct volute 15 is arranged below and corresponds to a fresh air duct, and the fresh air impeller 14 is used as an air power source; meanwhile, a first exhaust air inlet 2 of an exhaust air duct and a fresh air outlet 11 of a fresh air duct in the fresh air circulation module face indoors, an exhaust air outlet 16 of the exhaust air duct and a fresh air inlet 17 of the fresh air duct face outdoors, branch pipelines are connected to the tail ends of the fresh air outlet 11 and the first exhaust air inlet 2, and all indoor sections are selectively connected through different branch pipelines so as to improve the application scene range of the equipment; in addition, an air processor 13 is arranged on the end face of the fresh air duct volute 15 and can be used for improving the quality of fresh air entering a room.
When the multifunctional fresh air machine is used, all the parts are assembled according to the figure, and then the multifunctional fresh air machine is fixed on the ceiling of a bathroom through a fixing buckle at the outer side of the position of the panel 1 of the equipment. When the fresh air part is used, the fresh air/exhaust driving motor 4 and the fresh air impeller 14 jointly act to provide power, and fresh air is introduced from the outside through a pipeline by the fresh air inlet 17, is processed by the air processor 13 and is sent into the room through the fresh air outlet 11; meanwhile, the indoor old air can be powered by the fresh air/exhaust driving motor 4 and the exhaust impeller 3, and the old air is introduced from the indoor through the first exhaust air inlet 2 and the pipeline and is sent out of the room through the exhaust air outlet 16.
When heating or blowing is needed, the heating/exhaust driving motor 8 provides power to drive the impeller 9 of the heating fan, indoor air enters through the heating/exhaust air inlet 20, is heated through the air heating device 6, and is blown into the room through the heating/blowing air outlet 18 for heating, and at the moment, the internal valve of the exhaust air outlet 19 is closed.
When the indoor air is exhausted, the heating/exhaust driving motor 8 provides power to drive the heating fan impeller 9, indoor air enters through the heating/exhaust air inlet 20 and is exhausted out of the room through the pipeline after being connected with the pipeline through the exhaust outlet 19, and at the moment, the valve of the exhaust outlet 19 is opened and then the valve is closed to the heating/blowing air outlet 18 side.
Meanwhile, in the embodiment, when fresh air needs to be enhanced or exhaust air needs to be enhanced, only the corresponding exhaust impeller 3 or the clutch connected with the fresh air/exhaust driving motor 4 needs to be loosened, and the power of the fresh air/exhaust driving motor 4 can be completely used for driving the fresh air impeller 14 or the exhaust impeller 3 which keeps the clutch tightly held, so that the effect of enhancing the fresh air or enhancing the exhaust air is achieved.
And the right part of the panel 1 of this example is a reserved space, a second exhaust air inlet 21, an illumination unit 22 and/or an equipment operation state display device 23 may be optionally installed.
When the indoor air is exhausted, the heating/exhaust driving motor 8 provides power to drive the heating fan impeller 9, the indoor air enters through the heating/exhaust air inlet 20 and is exhausted out of the room through the exhaust outlet 19 (connecting pipeline), and at the moment, the valve of the exhaust outlet 19 is opened and is closed to the heating/blowing air outlet 18 side.
Meanwhile, the fresh air module can open the second air inlet 21, so that the indoor air is introduced from the second air inlet 21 and the first air inlet 2 through the pipeline into the air duct volute 5 and is exhausted from the room through the air outlet 16. The effect of strengthening indoor exhaust is reached.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A multifunctional fresh air fan comprises a functional module and a fresh air circulating module, and is characterized in that the functional module and the fresh air circulating module respectively comprise independently arranged circulating cavities, wherein a circulating fan is arranged in the functional module, and the circulating fan is arranged in a first guide volute; the fresh air circulating module comprises two fan impellers vertically arranged upwards and downwards in a stacked mode, the two fan impellers are coaxially arranged and are arranged on an output shaft of a fresh air driving motor together, the two fan impellers are arranged in a second guide volute, a fresh air duct and an exhaust air duct are arranged in the second guide volute and are mutually independent, different air outlet ducts respectively correspond to one fan impeller, and the corresponding fan impellers are used as power sources to drive air flow.
2. The multifunctional ventilator of claim 1 wherein said fresh air circulation module is enclosed on the same side as the functional modules by a device panel facing the bathroom, kitchen or other interior space.
3. The multifunctional fresh air machine as claimed in claim 1, wherein the air inlet of the functional module faces indoors and the air outlet faces outdoors, and a functional air return opening facing indoors is further provided on the functional module.
4. The multifunctional fresh air machine as claimed in claim 3, wherein a heating device is installed on the air duct inside the functional air return opening.
5. The multifunctional fresh air blower according to claim 2 wherein the exhaust duct of the fresh air circulation module is located at a side close to the equipment panel, and an exhaust inlet of the louver structure facing the installation area room is provided at a position on the equipment panel corresponding to the second guide scroll casing as a second exhaust inlet.
6. The multifunctional fresh air fan as claimed in claim 1, wherein the air inlet of the exhaust air duct and the air outlet of the fresh air duct in the fresh air circulation module face indoors, and the air outlet of the exhaust air duct and the air inlet of the fresh air duct face outdoors.
7. The multifunctional fresh air fan as claimed in claim 1, wherein two fan impellers in the fresh air circulation module are mounted on an output shaft of the fresh air driving motor through a clutch mechanism; and the clutch mechanism is a clutch or a detachable coupler.
8. The multifunctional fresh air fan as claimed in claim 1, wherein two fan impellers in the fresh air circulation module correspond to the fresh air duct and the exhaust air duct respectively; and the fresh air driving motor is arranged in a gap space between the two fan impellers arranged in a back-to-back manner.
9. The multifunctional fresh air machine as claimed in claim 1, wherein the second guiding volute is provided with two independent air inlets which are not affected with each other, and each air inlet corresponds to one air outlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351711.8U CN210951726U (en) | 2019-08-20 | 2019-08-20 | Multifunctional fresh air fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351711.8U CN210951726U (en) | 2019-08-20 | 2019-08-20 | Multifunctional fresh air fan |
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| Publication Number | Publication Date |
|---|---|
| CN210951726U true CN210951726U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921351711.8U Active CN210951726U (en) | 2019-08-20 | 2019-08-20 | Multifunctional fresh air fan |
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| Country | Link |
|---|---|
| CN (1) | CN210951726U (en) |
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2019
- 2019-08-20 CN CN201921351711.8U patent/CN210951726U/en active Active
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