Wall-mounted fresh air ventilator

Abstract

The utility model discloses a wall-mounted fresh air machine which comprises a machine box, a filter screen system is installed on the lower surface of the machine box in an embedded mode, the upper surface of the filter screen system is fixedly connected with an air inlet pipe, the surface of the air inlet pipe is connected with an air blower, the other end of the air blower is connected with a lower L-shaped three-way valve, and the lower L-shaped three-way valve is connected with an upper L-shaped three-way valve. One end of the lower L-shaped three-way valve is connected with an inner circulating pipe, the other end of the inner circulating pipe is connected with an upper L-shaped three-way valve, one end of the upper L-shaped three-way valve is connected with an air inlet box, and a valve rod is connected between the lower L-shaped three-way valve and the upper L-shaped three-way valve. According to the wall-mounted fresh air ventilator, fresh air can be brought into a room, indoor air circulation can be carried out through the wall-mounted fresh air ventilator in special hot and cold seasons, indoor air is internally circulated, the content of pm2.5 in the indoor air is reduced through filtering, and therefore the wall-mounted fresh air ventilator is more beneficial to human health protection.

Description

Technical Field

[0001] The utility model relates to the field of fans, in particular to a wall-mounted fresh air fan. Background Art

[0002] The function of the fresh air fan is: on the one hand, it discharges the polluted indoor air to the outside; on the other hand, it inputs the fresh outdoor air into the room after sterilization, disinfection, filtration and other measures, so that the room is filled with fresh and clean air at all times; but when in use, the fresh air fan has a single function and cannot achieve the role of indoor circulation filtration to reduce PM2.5 in indoor air. For example, in hot or cold winter, the introduction of outdoor air for a long time will greatly affect the comfort of the room temperature to the human body. At this time, there is no need to use the fresh air fan, which will cause the fresh air fan to be idle for a long time. Therefore, the single function affects its comprehensiveness. For this reason, we propose a wall-mounted fresh air fan. Utility Model Content

[0003] The main purpose of the utility model is to provide a wall-mounted fresh air fan, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A wall-mounted fresh air fan comprises a chassis, a lower surface of the chassis is embedded with a filter system, an upper surface of the filter system is fixedly connected to an air inlet duct, the surface of the air inlet duct is connected to a blower fan, the other end of the blower fan is connected to a lower L-shaped three-way valve, one end of the lower L-shaped three-way valve is connected to an internal circulation pipe, the other end of the internal circulation pipe is connected to an upper L-shaped three-way valve, one end of the upper L-shaped three-way valve is connected to an air inlet box, a valve stem is connected and installed between the lower L-shaped three-way valve and the upper L-shaped three-way valve, the upper end of the valve stem passes through the upper L-shaped three-way valve and is connected to the chassis, one side of the chassis is electrically connected to a power supply wire, a control and display panel is embedded and installed on the front surface of the chassis, a mounting back plate is fixedly installed on the rear surface of the chassis, and fixing holes are provided on the surface of the mounting back plate near the four corners.

[0006] Furthermore, an air outlet is provided on the lower surface of the filter system, and an air inlet is provided on the upper surface of the air inlet box.

[0007] Furthermore, the lower L-shaped three-way valve includes a lower valve body, interface No. 1, interface No. 2, an external air inlet and a lower valve core. The front and rear surfaces of the lower valve body are respectively connected to interface No. 2 and the external air inlet. The side of the lower valve body is connected to interface No. 1. The lower valve core is movably installed inside the lower valve body.

[0008] Furthermore, the lower L-shaped three-way valve is connected to the internal circulation pipe through the No. 2 interface, the lower L-shaped three-way valve is connected to the air inlet pipe through the No. 1 interface, and the external air inlet is connected to the outside through the installation back plate.

[0009] Furthermore, the upper L-shaped three-way valve includes an upper valve body, interface No. 3, interface No. 4, an external exhaust outlet and an upper valve core. The front and rear surfaces of the upper valve body are respectively connected to interface No. 4 and the external exhaust outlet, the side of the upper valve body is connected to interface No. 3, and the upper valve core is movably installed inside the upper valve body.

[0010] Furthermore, the upper L-shaped three-way valve is connected to the other end of the internal circulation pipe through the No. 4 interface, the upper valve body is connected to the air inlet box through the No. 3 interface, the external exhaust port is connected to the outside through the mounting back plate, and the valve stem passes through the upper valve body and the lower valve body to connect the upper valve core and the lower valve core.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, when the wall-mounted fresh air fan is in use, in addition to being able to bring fresh air into the room, it can also circulate the indoor air through the wall-mounted fresh air fan in special hot and cold seasons, circulate the indoor air internally, and reduce the PM2.5 content in the indoor air by filtering, which is more conducive to protecting human health. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a wall-mounted fresh air fan of the utility model;

[0014] Figure 2 This is a partial view of a wall-mounted fresh air fan of the utility model;

[0015] Figure 3 This is a partial cross-sectional view of a wall-mounted fresh air fan of the utility model;

[0016] Figure 4 It is a cross-sectional view of a lower L-shaped three-way valve of a wall-mounted fresh air fan of the utility model;

[0017] Figure 5 It is a cross-sectional view of an upper L-shaped three-way valve of a wall-mounted fresh air fan of the utility model.

[0018] In the figure: 1. chassis; 2. filter system; 201. exhaust port; 3. air inlet pipe; 4. blower fan; 5. lower L-type three-way valve; 501. lower valve body; 502. interface No. 1; 503. interface No. 2; 504. external air inlet; 505. lower valve core; 6. upper L-type three-way valve; 601. upper valve body; 602. interface No. 3; 603. interface No. 4; 604. external air outlet; 605. upper valve core; 7. internal circulation pipe; 8. knob; 9. valve stem; 10. air inlet box; 1001. air inlet; 11. power supply wire; 12. control and display panel; 13. mounting back plate; 14. fixing hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Embodiment 1:

[0020] like Figure 1-5 As shown, a wall-mounted fresh air fan comprises a chassis 1, a filter system 2 is embedded and installed on the lower surface of the chassis 1, an air inlet pipe 3 is fixedly connected to the upper surface of the filter system 2, a blower fan 4 is connected to the surface of the air inlet pipe 3, the other end of the blower fan 4 is connected to a lower L-shaped three-way valve 5, one end of the lower L-shaped three-way valve 5 is connected to an internal circulation pipe 7, the other end of the internal circulation pipe 7 is connected to an upper L-shaped three-way valve 6, one end of the upper L-shaped three-way valve 6 is connected to an air inlet box 10, and the lower L-shaped three-way valve 5 and the upper L-shaped three-way valve 6 are connected with a valve stem 9, the valve stem 9 is connected to the lower valve core 505 and the upper valve core 605, and is driven at the same time when controlled, the upper end of the valve stem 9 passes through the upper L-shaped three-way valve 6 and is connected to the case 1 with a knob 8, one side of the case 1 is electrically connected with a power supply wire 11, the front surface of the case 1 is embedded with a control and display panel 12, the rear surface of the case 1 is fixedly installed with a mounting back plate 13, and the surface of the mounting back plate 13 is provided with fixing holes 14 near the four corners;

[0021] An exhaust port 201 is provided on the lower surface of the filter system 2. When installed, the height between the exhaust port 201 and the indoor floor should be higher than 1.5 meters to prevent the dust on the floor from being lifted into the air when the fan is running. An air inlet 1001 is provided on the upper surface of the air inlet box 10; the lower L-shaped three-way valve 5 includes a lower valve body 501, a No. 1 interface 502, a No. 2 interface 503, an external air inlet 504 and a lower valve core 505. The front and rear surfaces of the lower valve body 501 are respectively connected to the No. 2 interface 503 and the external air inlet 504. The side of the lower valve body 501 is connected to the No. 1 interface 502. The lower valve core 505 is movably installed inside the lower valve body 501; the lower L-shaped three-way valve 5 is connected to the inner circulation pipe 7 through the No. 2 interface 503, and the lower L-shaped three-way valve 5 is connected to the air inlet pipe 3 through the No. 1 interface 502 The external air inlet 504 is connected to the outside through the installation back plate 13; the upper L-type three-way valve 6 includes an upper valve body 601, a No. 3 interface 602, a No. 4 interface 603, an external air outlet 604 and an upper valve core 605, the front and rear surfaces of the upper valve body 601 are respectively connected with the No. 4 interface 603 and the external air outlet 604, the side of the upper valve body 601 is connected with the No. 3 interface 602, and the upper valve core 605 is movably installed inside the upper valve body 601; the upper L-type three-way valve 6 is connected with the other end of the internal circulation pipe 7 through the No. 4 interface 603, the upper valve body 601 is connected with the air inlet box 10 through the No. 3 interface 602, the external air outlet 604 is connected to the outside through the installation back plate 13, and the valve stem 9 passes through the upper valve body 601 and the lower valve body 501 to connect the upper valve core 605 and the lower valve core 505.

[0022] It should be noted that the utility model is a wall-mounted fresh air fan. When in use, the external exhaust vent 604 and the external air inlet 504 are connected to the outdoors through holes punched in the wall, the power supply wire 11 is connected to the mains, and the blower fan 4 is started through the control and display panel 12 to suck the outdoor air through the external air inlet 504, enter the filter system 2 through the air inlet pipe 3, and then be discharged from the exhaust vent 201 to the room. Because the indoor air pressure is greater than the external air pressure, the indoor air will enter the air inlet box 10 through the air inlet 1001, and be discharged to the outdoors through the external exhaust vent 604 through the No. 3 interface 602. In this way, the fresh air can be delivered into the room and the indoor polluted gas can be discharged. In some special cold or hot seasons and when it is not necessary to maintain When continuing the external circulation ventilation, the user can manually turn the knob 8 to drive the upper valve core 605 and the lower valve core 505 to rotate through the valve stem 9, connect the No. 3 interface 602 and the No. 4 interface 603 and close the external exhaust port 604, connect the No. 1 interface 502 and the No. 2 interface 503 and close the external air inlet 504, so that when the blower fan 4 is in operation, the indoor air can be introduced through the air inlet 1001, enter the internal circulation pipe 7 through the No. 3 interface 602, and then enter the air inlet pipe 3 through the No. 1 interface 502, and then the indoor air can be introduced into the filter system 2 for filtration and then discharged into the room, so that the indoor internal circulation can be realized, and the PM2.5 particles in the indoor air can be filtered out, thereby protecting human health.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wall-mounted fresh air fan, characterized in that: The invention comprises a chassis (1), wherein a filter system (2) is embedded and installed on the lower surface of the chassis (1), an air inlet pipe (3) is fixedly connected to the upper surface of the filter system (2), the surface of the air inlet pipe (3) is connected to an air blower (4), the other end of the air blower (4) is connected to a lower L-shaped three-way valve (5), one end of the lower L-shaped three-way valve (5) is connected to an internal circulation pipe (7), the other end of the internal circulation pipe (7) is connected to an upper L-shaped three-way valve (6), and one end of the upper L-shaped three-way valve (6) is connected to an air inlet box (10). ), a valve stem (9) is connected and installed between the lower L-shaped three-way valve (5) and the upper L-shaped three-way valve (6), the upper end of the valve stem (9) passes through the upper L-shaped three-way valve (6) and is connected to a knob (8) of the chassis (1), one side of the chassis (1) is electrically connected to a power supply wire (11), a control and display panel (12) is embedded and installed on the front surface of the chassis (1), and a mounting back plate (13) is fixedly installed on the rear surface of the chassis (1), and fixing holes (14) are provided on the surface of the mounting back plate (13) near the four corners.

2. A wall-mounted fresh air fan according to claim 1, characterized in that: An air outlet (201) is provided on the lower surface of the filter system (2), and an air inlet (1001) is provided on the upper surface of the air inlet box (10).

3. A wall-mounted fresh air fan according to claim 2, characterized in that: The lower L-shaped three-way valve (5) comprises a lower valve body (501), a No. 1 interface (502), a No. 2 interface (503), an external air inlet (504) and a lower valve core (505); the front and rear surfaces of the lower valve body (501) are respectively connected to the No. 2 interface (503) and the external air inlet (504); the side surface of the lower valve body (501) is connected to the No. 1 interface (502); and the lower valve core (505) is movably installed inside the lower valve body (501).

4. A wall-mounted fresh air fan according to claim 3, characterized in that: The lower L-shaped three-way valve (5) is connected to the internal circulation pipe (7) via the No. 2 interface (503), the lower L-shaped three-way valve (5) is connected to the air inlet pipe (3) via the No. 1 interface (502), and the external air inlet (504) passes through the mounting back plate (13) and is connected to the outside.

5. A wall-mounted fresh air fan according to claim 4, characterized in that: The upper L-shaped three-way valve (6) comprises an upper valve body (601), a No. 3 interface (602), a No. 4 interface (603), an external air outlet (604) and an upper valve core (605); the front and rear surfaces of the upper valve body (601) are respectively connected to the No. 4 interface (603) and the external air outlet (604); the side surface of the upper valve body (601) is connected to the No. 3 interface (602); and the upper valve core (605) is movably installed inside the upper valve body (601).

6. A wall-mounted fresh air fan according to claim 5, characterized in that: The upper L-shaped three-way valve (6) is connected to the other end of the internal circulation pipe (7) via the No. 4 interface (603), the upper valve body (601) is connected to the air inlet box (10) via the No. 3 interface (602), the external air outlet (604) passes through the mounting back plate (13) to communicate with the outside, and the valve stem (9) passes through the upper valve body (601) and the lower valve body (501) to connect the upper valve core (605) and the lower valve core (505).

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