CN215983009U

CN215983009U - New fan that possesses structure of preventing flowing backward

Info

Publication number: CN215983009U
Application number: CN202121871928.9U
Authority: CN
Inventors: 于延友
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-03-08
Anticipated expiration: 2031-08-11

Abstract

The utility model provides a fresh air fan with an anti-backflow structure, which comprises a filtering shell, a plate-type primary-effect air filter screen, an active carbon filter screen plate, an HEPA high-efficiency filter screen plate, a stepping motor and an air valve sealing plate, wherein the filtering shell is inserted at the right side in the fresh air fan body, the plate-type primary-effect air filter screen is inserted at the front side in the filtering shell, the active carbon filter screen plate is inserted at the rear side of the plate-type primary-effect air filter screen plate, the HEPA high-efficiency filter screen plate is inserted at the rear side of the active carbon filter screen plate, the stepping motor is assembled at the right side of an air outlet base, and the air valve sealing plate is arranged at the rear side of the stepping motor.

Description

New fan that possesses structure of preventing flowing backward

Technical Field

The utility model discloses a new fan with an anti-backflow structure, and belongs to the technical field of new fans.

Background

The fresh air machine is an effective air purification device, can circulate indoor air, on one hand, discharges dirty indoor air outdoors, and on the other hand, inputs outdoor fresh air into the room after measures such as sterilization, disinfection, filtration and the like, so that the air in the room is fresh and clean at every moment.

Patent documents: CN211084342U, published Japanese 2020.07.24, discloses a fresh air system device, 1, the utility model through setting up the air valve board, when the first vent of the outer panel and the second vent of the inner panel are not in the same position in the use, the air valve board is in the closed condition, the contactor does not contact with contact switch, the whole circuit is disconnected, at this moment, the electrical machinery does not work; when the first ventilation opening of the outer plate and the second ventilation opening of the inner plate are in the same position, the air valve plate is in an open state, the contactor is in contact with the contact switch, the whole circuit is closed, the motor works at the moment, air enters the filter element, and the filter element purifies the air. 2. According to the utility model, the first slot is arranged at the top of the casing, when the filter screen needs to be replaced after a period of use or the machine needs to be maintained due to damage of a system or a fan in the use process, the plug-and-play new module can be replaced by only pulling out the filter core from the first slot, the maintenance can be completed after the module is replaced, the filter screen in the filter core can also be replaced, and the filter core is placed into the first slot after the replacement is completed, so that the replacement is simple. Although the air valve plate has the ability of preventing the downdraught, the motor does not have and switches the air valve plate actively, the user is required to adjust the positions of the first ventilation opening and the second ventilation opening to control the switch of the air valve plate, the practicability is poor, the filtering core does not have multi-stage filtering ability, the filtering core is poor in filtering effect, and the problem that the fresh air fan with the structure of preventing the downdraught is needed to solve is urgently needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the fresh air fan with the anti-backflow structure so as to solve the problems in the background art.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a new fan with an anti-backflow structure comprises a cover plate, an anti-backflow filtering component, a non-return air valve and a new fan body, wherein the cover plate is installed on the front end face of the new fan body, the non-return air valve is arranged on the right side of the front end face of the new fan body, the anti-backflow filtering component is arranged in the new fan body and comprises a filtering shell, a plate-type primary-effect air filtering net plate, an active carbon filtering net plate, an HEPA high-efficiency filtering net plate, a ventilation baffle plate, a stepping motor, an air valve sealing plate, a remote control switch seat and an air outlet seat, the filtering shell is inserted on the right side in the new fan body, the remote control switch seat is arranged on the left side of the front end face of the filtering shell, the plate-type primary-effect air filtering net plate is inserted on the front side in the filtering shell, the active carbon filtering net plate is inserted on the rear side of the active carbon filtering net plate, the HEPA high-efficiency filtering net plate is inserted on the rear side of the active carbon filtering net plate, the inside ventilation baffle that is provided with of filter housing, the seat that gives vent to anger is installed to the ventilation baffle rear side, the seat right side that gives vent to anger is equipped with step motor, the step motor rear side is provided with the blast gate and seals the board.

Furthermore, the input end of the stepping motor is electrically connected with the output end of the remote switch base through a wire, and a connecting rod is arranged between the stepping motor and the air valve sealing plate.

Furthermore, the non-return air valve is communicated with an outlet of an external main electric control fan through a pipeline, and the fresh air machine body is electrically connected with the external main electric control fan.

Furthermore, the front side and the rear side of the inner wall of the filtering shell are symmetrically provided with positioning slots, and the positioning slots and other specifications are provided with six groups.

Further, board-like primary air filter, active carbon filter screen board and HEPA high efficiency filter screen board are all detachable construction.

Furthermore, three groups are installed to specifications such as air outlet seats.

The utility model has the beneficial effects that: the utility model relates to a new fan with a backflow-preventing structure, which is added with a plate-type primary air filter screen, an active carbon filter screen plate, an HEPA high-efficiency filter screen plate, a ventilation baffle plate, a stepping motor, an air valve sealing plate, a remote control switch seat and an air outlet seat, when a user opens the remote switch base by means of an external remote controller, the stepping motor is electrified to work and drives the connecting rod to open the air valve sealing plate, at the moment, the external air is sucked into the filtering shell 21 by the fresh air machine body 4 and then is filtered by the plate-type primary air filter screen for one time, then the filter screen is filtered for the second time by an active carbon filter screen plate, and finally the filter screen is filtered for the third time by an HEPA high-efficiency filter screen plate, when a user closes the remote switch seat by means of an external remote controller, the stepping motor can drive the connecting rod to enable the air valve sealing plate to perform closing action, so that the sealing effect is achieved, and the condition that the fresh air machine body flows backward is prevented.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a fresh air machine with a back-draft prevention structure according to the present invention;

FIG. 2 is a schematic structural view of a backflow prevention filter assembly in a fresh air machine with a backflow prevention structure according to the present invention;

FIG. 3 is a top sectional view of a backflow prevention filter assembly in a new blower with a backflow prevention structure according to the present invention;

in the figure: 1-machine cover plate, 2-backflow prevention filtering component, 3-non-return air valve, 4-fresh air machine body, 21-filtering shell, 22-plate type primary air filtering net, 23-activated carbon filtering net plate, 24-HEPA high efficiency filtering net plate, 25-ventilation baffle plate, 26-stepping motor, 261-connecting rod, 27-air valve sealing plate, 28-remote control switch seat and 29-air outlet seat.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a new fan that possesses structure of preventing flowing backward, includes that quick-witted apron 1, prevent flowing backward filtering component 2, check air valve 3 and new trend organism 4, the end surface installation has apron 1 before the new trend organism 4, and the end surface right side is provided with check air valve 3 before the new trend organism 4, and new trend organism 4 is inside to be provided with prevents flowing backward filtering component 2.

The backflow-preventing filter assembly 2 comprises a filter shell 21, a plate-type primary air filter screen 22, an active carbon filter screen plate 23, an HEPA high-efficiency filter screen plate 24, a ventilation partition plate 25, a stepping motor 26, an air valve sealing plate 27, a remote control switch seat 28 and an air outlet seat 29, wherein the filter shell 21 is inserted on the right side inside a fresh air machine body 4, the remote control switch seat 28 is arranged on the left side of the front end surface of the filter shell 21, the plate-type primary air filter screen 22 is inserted on the front side inside the filter shell 21, the active carbon filter screen plate 23 is inserted on the rear side of the plate-type primary air filter screen 22, the HEPA high-efficiency filter screen plate 24 is inserted on the rear side of the active carbon filter screen plate 23, the ventilation partition plate 25 is arranged inside the filter shell 21, the air outlet seat 29 is arranged on the rear side of the ventilation partition plate 25, the stepping motor 26 is arranged on the right side of the air outlet seat 29, the air valve sealing plate 27 is arranged on the rear side of the stepping motor 26, and the design solves the problem that the existing fresh air machine does not have a backflow-preventing structure, and the problem of not being able to perform multiple stages of filtration of the incoming air.

The input end of the stepping motor 26 is electrically connected with the output end of the remote control switch seat 28 through a wire, the connecting rod 261 is arranged between the stepping motor 26 and the air valve sealing plate 27, the remote control switch seat 28 facilitates users to control the stepping motor 26 to be powered on and powered off by means of an external remote controller, the connecting rod 261 facilitates the stepping motor 26 to drive the air valve sealing plate 27 to perform opening and closing actions, the check air valve 3 is communicated with the outlet of the external main electric control fan through a pipeline, the fresh air machine body 4 is electrically connected with the external main electric control fan, the check air valve 3 prevents the external main electric control fan from being out of work, and external dirty air enters the internal part of the external main electric control fan.

Both sides around filtering casing 21 inner wall are seted up to the positioning slot symmetry, six groups have been seted up to specifications such as positioning slot, six groups positioning slot make things convenient for the board-like air filter 22 that just imitates, active carbon filter screen board 23 and HEPA high efficiency filter otter board 24 cartridge are inside filtering casing 21, board-like air filter 22 that just imitates, active carbon filter screen board 23 and HEPA high efficiency filter otter board 24 are detachable construction, this design makes things convenient for the user to dismantle clearance or change board-like air filter screen 22 that just imitates, active carbon filter screen board 23 and HEPA high efficiency filter otter board 24.

Three groups of air outlet seats 29 are arranged according to the same specification, and the air outlet quantity of the fresh air machine body 4 is larger due to the three groups of air outlet seats 29.

As an embodiment of the present invention: when the user turns on the remote switch seat 28 by means of an external remote controller, the stepping motor 26 is energized and drives the connecting rod 261 to open the air valve sealing plate 27, meanwhile, the fresh air machine body 4 is opened, and the external main electric control fan is electrified to operate to suck the indoor air, then, the sucked air pushes the check damper 3 to be opened through the duct, thereby discharging the indoor air, at this time, the outside air is sucked into the filtering shell 21 by the fresh air machine body 4, and then is filtered by the plate-type primary air filtering net 22 for one time, then the filter screen is filtered for the second time by an active carbon filter screen plate 23, and finally filtered for the third time by an HEPA high-efficiency filter screen plate 24, the cleanliness of the air entering the room is higher, and the air filtered for three times enters the air outlet seat 29 through the ventilation partition plate 25 and then enters the air outlet of the fresh air machine body 4 through the air outlet seat 29 and is sent into the room; when the user closes the remote switch seat 28 by means of an external remote controller, the stepping motor 26 drives the connecting rod 261 to close the air valve sealing plate 27, thereby achieving the sealing effect and preventing the filter housing 21 from flowing backward.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a new fan that possesses structure of preventing flowing backward, includes the quick-witted apron, prevents flowing backward filtering component, ends contrary blast gate and new trend organism, its characterized in that: an organic cover plate is arranged on the front end face of the fresh air machine body, a check air valve is arranged on the right side of the front end face of the fresh air machine body, and a backflow prevention filtering assembly is arranged in the fresh air machine body;

prevent flowing backward filter assembly and seal board, remote switch seat and air outlet seat including filtering casing, board-like just imitating airstrainer, active carbon filter screen board, HEPA high efficiency filter screen board, ventilation baffle, step motor, blast gate, the inside right side cartridge of new trend organism has the filtration casing, the terminal surface left side is provided with the remote switch seat before the filtration casing, filter the inside front side of casing and insert and be equipped with board-like just imitating airstrainer, the board-like just imitates airstrainer rear side and inserts and be equipped with the active carbon filter screen board, the HEPA high efficiency filter screen board is inserted and is equipped with to active carbon filter screen board rear side, filter the inside ventilation baffle that is provided with of casing, the air outlet seat is installed to the ventilation baffle rear side, air outlet seat right side is equipped with step motor, the step motor rear side is provided with the blast gate and seals the board.

2. The fresh air machine with the anti-backflow structure according to claim 1, characterized in that: the input end of the stepping motor is electrically connected with the output end of the remote switch seat through a lead, and a connecting rod is arranged between the stepping motor and the air valve sealing plate.

3. The fresh air machine with the anti-backflow structure according to claim 1, characterized in that: the non-return air valve is communicated with an outlet of an external main electric control fan through a pipeline, and the fresh air machine body is electrically connected with the external main electric control fan.

4. The fresh air machine with the anti-backflow structure according to claim 1, characterized in that: the front side and the rear side of the inner wall of the filtering shell are symmetrically provided with positioning slots, and the positioning slots and other specifications are provided with six groups.

5. The fresh air machine with the anti-backflow structure according to claim 1, characterized in that: the plate-type primary air filter screen, the activated carbon filter screen plate and the HEPA high-efficiency filter screen plate are all detachable structures.

6. The fresh air machine with the anti-backflow structure according to claim 1, characterized in that: three groups are installed on the air outlet seat in the same specification.