CN114777196B

CN114777196B - Rainproof air inlet shutter for ventilation air conditioner

Info

Publication number: CN114777196B
Application number: CN202210232814.2A
Authority: CN
Inventors: 韩宇; 李本强; 刘杰斌; 刘红; 李怡萱
Original assignee: China Institute of Building Standard Design and Research Co Ltd
Current assignee: China Institute of Building Standard Design and Research Co Ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2023-05-16
Anticipated expiration: 2042-03-10
Also published as: CN114777196A

Abstract

The invention discloses a rainproof air inlet shutter for a ventilation air conditioner, which comprises frames and blades, wherein a plurality of blades are arranged between the frames on two sides in parallel, the cross section of each blade is flat at the bottom, the two sides of each blade are arc-shaped and extend upwards in a C shape, the opening direction of the C shape of each blade is inclined upwards at a first angle with the horizontal surface, and the heights of the end parts of the two ends of each blade arranged on the frames are different, so that each blade is obliquely arranged in the frames on two sides at a second angle. According to the invention, the inclined C-shaped blades 2 are arranged, so that the formation of a water curtain is avoided, the rainproof effect is improved, accumulated water is not easy to cause, the effect of gas-water separation is effectively improved, and the air flow resistance of inlet air is reduced.

Description

Rainproof air inlet shutter for ventilation air conditioner

Technical Field

The invention relates to the technical field of ventilation air conditioners, in particular to a rainproof air inlet shutter for a ventilation air conditioner.

Background

As shown in fig. 1 to 3, in the conventional ventilation and air conditioning system at present, the blades of the rain-proof air inlet shutter are zigzag folded plates, and rainwater is guided from top to bottom through the zigzag blades until discharged from the lowermost blade, and such a blade structure has the following defects: 1. the water flow of the lower layer of blades is gradually increased compared with that of the upper layer, so that rainwater is not easy to drain; 2. the water separated from each layer of blades can be left to the next layer of blades, so that a water curtain is formed between the blades of the lowest layers, and the air is greatly prevented from entering; 3. the existence of the water curtain causes uneven wind resistance and increased pressure difference, accelerates the airflow speed of part of the water curtain passing through the blades, leads the rainwater to be filled into the air pipe, causes indoor water trouble, and greatly reduces the service lives of the filter and the fan when serious; 4. the bottom of the lower layer blade is easy to accumulate water, which causes hidden trouble to the building wall.

Therefore, the conventional ventilating air conditioner rainproof air inlet shutter has inconvenience and defects in structure, and needs to be further improved. How to create a new rainproof air inlet shutter for ventilation and air conditioning belongs to one of the important research and development subjects at present.

Disclosure of Invention

The invention aims to solve the technical problem of providing the rainproof air inlet shutter for the ventilation air conditioner, which is used for forming vortex inside the blades to perform gas-water separation, uniformly draining water among each layer of blades, not forming a water curtain and improving the drainage effect, so that the defects of the prior art are overcome.

In order to solve the technical problems, the invention provides a rainproof air inlet shutter for a ventilation air conditioner, which comprises frames and blades, wherein a plurality of blades are arranged between the frames on two sides in parallel, the cross section of each blade is flat at the bottom, the arc of the two sides extends upwards to form a C shape, the opening direction of the C shape of the blade is inclined upwards at a first angle with the horizontal surface, and the heights of the end parts of the two ends of the blade arranged on the frames are different, so that the blades are obliquely arranged in the frames on two sides at a second angle.

As an improvement of the invention, one side of the frame is vertically provided with a side plate, the side plate is provided with a blade mounting hole, the blade is inserted into the blade mounting hole, a gap is arranged between the side plate and the frame, and a vertically through drainage groove is formed at the gap and used for draining accumulated water in the blade to the outside.

Further, a first vent hole is formed in the side plate, a decorative plate is arranged on one side, facing the outside, of the drainage groove, a second vent hole is formed in the decorative plate, and a drainage hole is formed in the lower end of the decorative plate.

Further, the aperture ratio of the first vent hole is 0.6-0.8, and the local resistance coefficient is less than or equal to 2.

Further, the lower end of the frame is provided with a water guide plate which faces the outdoor side and is inclined downwards.

Further, the first angle is 30-40 degrees.

Further, the second angle is 2-5 degrees.

Further, the blade is made of aluminum alloy.

Further, the frame and the air duct inlet are fixedly installed through self-tapping screws, and a waterproof sealing gasket is arranged between the frame and the air duct inlet.

With such a design, the invention has at least the following advantages:

1. each layer of blade is evenly discharged the rainwater through the water drainage tank, and the clearance department water yield of each layer of blade is unanimous, does not form the water curtain, has avoided the local air velocity of flow too big that causes because of the existence of water curtain, brings the rainwater to the inside condition of tuber pipe.

2. The inside of the C-shaped blade is easier to form vortex, so that the effect of gas-water separation is improved.

3. The arcuate edges of the C-shaped blades reduce airflow resistance.

Drawings

The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.

Fig. 1 is a schematic diagram of the forward structure of a conventional rain-proof air inlet shutter of a ventilation air conditioner.

Fig. 2 is a schematic side sectional view of a conventional rain-proof air inlet shutter of a ventilation air conditioner.

FIG. 3 is a schematic diagram of the flow of air and rain water to a conventional ventilated air conditioning rain-proof air intake shutter.

Fig. 4 is a schematic diagram of a forward structure of a rain-proof air inlet shutter for a ventilation air conditioner.

Fig. 5 is a schematic side sectional view of a rain-proof air inlet shutter for ventilation air conditioner.

Fig. 6 is a schematic diagram of a horizontal cross-section structure of a rain-proof air inlet shutter for a ventilation air conditioner.

Fig. 7 is a schematic structural view of the side plate.

FIG. 8 is a schematic diagram of the flow of air and rain water through the rain-proof air inlet shutter for a ventilation air conditioner.

Fig. 9 is a schematic air flow diagram of the rain-proof air inlet shutter for ventilation air conditioner in a horizontal sectional view.

Fig. 10 is a schematic diagram of rainwater flow in a forward view of a rain-proof air inlet shutter for a ventilation air conditioner.

Fig. 11 is a schematic diagram of rainwater flow direction of the rain-proof air inlet shutter for ventilation and air conditioning in a side sectional view.

Reference numerals illustrate: 1. a frame; 2. a blade; 3. an air duct; 4. self-tapping screw; 5. a water guide plate; 6. a side plate; 7. a drainage channel; 8. a decorative plate; 9. a blade mounting hole; 10. a first vent; 11. and a second ventilation hole.

Detailed Description

Referring to fig. 4 to 7, the invention provides a rain-proof air inlet shutter for a ventilation air conditioner, which comprises a frame 1 and blades 2, wherein a plurality of blades 2 are arranged between the frames 1 on two sides in parallel, the cross section of each blade 2 is flat at the bottom, and two sides of each blade are C-shaped with arc shapes extending upwards. The C-shaped opening direction of the blade 2 is inclined upwards at a first angle with the horizontal surface. Preferably, the first angle is 30 ° to 40 °. The heights of the two end parts of the blades 2 arranged on the side frames 1 are different, so that the blades 2 are obliquely arranged in the side frames 2 at a second angle. Preferably, the second angle is 2 ° to 5 °.

The side plate 6 is vertically arranged on one side of the frame 1, the side plate 6 is provided with a blade mounting hole 9, the blade 2 is inserted into the blade mounting hole 9, a gap is formed between the side plate 6 and the frame 1, a vertically through drainage groove 7 is formed at the gap, accumulated water in the blade 2 can flow into the drainage groove 7 through the blade mounting hole 9, and then is discharged by the drainage groove 7. The side plate 6 is provided with a first vent hole 10, the opening rate of the first vent hole 10 is 0.6-0.8, and the local resistance coefficient is less than or equal to 2. The water drainage tank 7 is provided with decorative board 8 towards outdoor one side, and the lower extreme of decorative board 8 is opened there is the wash port (not shown in the figure), still opens second ventilation hole 11 on the decorative board 8, and the setting of first ventilation hole 10 and second ventilation hole 11 is used for leading outside air current to get into the sunken department of the C font of blade 2 from decorative board 8 and curb plate 6 and forms the vortex, improves the effect of gas-water separation. The decorative board 8 mainly plays a role in decoration and attractiveness, and in the embodiment, the decorative board 8 adopts a hollowed metal through board, namely, a middle hollowed part is a second ventilation hole 11, and a lower hollowed part is a drain hole. In other embodiments, the decorative board 8 may be made of any other solid material, and the form of the second ventilation hole 11 and the drain hole is not limited to the hollow hole, and even the decorative board 8 may not be completely provided, so long as the ventilation and drain requirements of the blade 2 are satisfied.

Each of the blades 2 is inclined to the horizontal surface in two directions, one direction is the direction of the blade itself, that is, the opening direction of the C-shape is inclined upward, and the inclination in this direction forms a gap between each layer of blades 2 for allowing air to enter; the other direction is the inclination of the installation direction of the blades 2, i.e. the heights of the two ends of the blades 2 are different, and the inclination in this direction enables each blade 2 to drain rainwater into the drainage channel 7.

Preferably, the lower end of the frame 1 is provided with a water guide plate 5, and the water guide plate 5 faces the outdoor side and is inclined downwards, so as to guide the rainwater at the bottom of the lowermost blade 2 to the outdoor side.

Preferably, the blade 2 is made of aluminum alloy. The frame 1 is fixedly arranged with the inlet of the air pipe 3 through a self-tapping screw 4, and is provided with a waterproof sealing gasket (not shown in the figure).

Referring to fig. 8 to 11, when the rainproof air inlet shutter for a ventilation air conditioner is in use, external air enters an air pipe through two channels, one channel is positioned at a gap between the upper layer of blades 2 and the lower layer of blades 2 and is a first air inlet channel, and the arc-shaped edges of the blades 2 can reduce the air flow resistance of the first air inlet channel; the other channel is positioned at the decorative plate 8 facing the outdoor, external air flows sequentially enter the C-shaped concave part of the blade 2 through the second ventilation holes 11 and the first ventilation holes 10, and is a second air inlet channel, the air flow of the second air inlet channel is converged with the air flow of the first air inlet channel in the concave part of the blade 2, vortex is formed, the air-water separation effect is improved through the centrifugal effect of the vortex, rainwater is left in the blade 2, and air enters the air pipe. The rainwater left in the blade 2 is automatically discharged to the drainage groove 7 due to the difference in installation heights of the two ends of the blade 2, and then is discharged through the water guide plate 5. Meanwhile, part of rainwater does not fall into the concave part of the blade 2, but falls to the water guide plate 5 layer by layer along the outer eave of the blade 2, and is directly discharged by the water guide plate 5.

According to the invention, the inclined C-shaped blades 2 (at the first angle and the second angle) are arranged, so that the formation of a water curtain is avoided, the rainproof effect is improved, water accumulation is not easy to occur, the gas-water separation effect is effectively improved, and the air flow resistance of air inlet is reduced.

The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.

Claims

1. The rainproof air inlet shutter for the ventilation air conditioner is characterized by comprising frames and blades, wherein a plurality of blades are arranged between the frames on two sides in parallel, the cross section of each blade is flat at the bottom, the two sides of each blade are arc-shaped and extend upwards in a C shape, the opening direction of the C shape of each blade is inclined upwards at a first angle with the horizontal surface, and the heights of the end parts of the two ends of each blade arranged on the frames are different, so that each blade is obliquely arranged in the frames on two sides at a second angle;

a side plate is vertically arranged on one side of the frame, a blade mounting hole is formed in the side plate, the blade is inserted into the blade mounting hole, a gap is formed between the side plate and the frame, and a vertically through drainage groove is formed at the gap and used for draining accumulated water in the blade to the outside;

the side plate is provided with a first vent hole, one side of the drain tank facing the outside is provided with a decorative plate, the decorative plate is provided with a second vent hole, and the lower end of the decorative plate is provided with a drain hole;

one channel is positioned at the gap between the upper layer of blades and the lower layer of blades and is a first air inlet channel, and the arc-shaped edges of the blades can reduce the airflow wind resistance of the first air inlet channel; the other channel is positioned at the decorative plate facing the outdoor, and external air flow sequentially enters the C-shaped concave part of the blade through the second ventilation hole and the first ventilation hole to form a second air inlet channel; the air flow of the second air inlet channel is converged with the air flow of the first air inlet channel in the concave part of the blade, vortex is formed, the air-water separation effect is improved through the centrifugal effect of the vortex, rainwater is left in the blade, and air enters the air pipe.

2. The rainproof air inlet shutter for ventilation and air conditioning of claim 1, wherein the opening ratio of the first ventilation hole is 0.6-0.8, and the local resistance coefficient is less than or equal to 2.

3. A rain-proof air inlet shutter for a ventilating air conditioner according to claim 1, wherein the lower end of the frame is provided with a water guide plate which faces the outside of the room and is inclined downward.

4. A rain-proof air intake shutter for a ventilation air conditioner according to claim 1, wherein the first angle is 30 ° to 40 °.

5. A rain-proof air intake shutter for a ventilation air conditioner according to claim 1, wherein the second angle is 2 ° to 5 °.

6. A rain-proof air inlet shutter for a ventilation air conditioner according to claim 1, wherein the blade is made of aluminum alloy.

7. The rainproof air inlet shutter for a ventilating air conditioner as set forth in claim 1, wherein the frame is fixed to the air duct inlet by self-tapping screws, and a waterproof gasket is provided between the frame and the air duct inlet.