A wall-attached air supply device and air supply method for an integrated air purification system

Abstract

The present invention belongs to the technical field of ventilation and air conditioning, and relates to a wall-attached air supply device of an integrated air purification system, including a column, a pre-buried air duct, a mushroom head baffle, an air outlet plate and an annular air guide plate; the upper end of the column is connected to the air outlet plate, and the mushroom head baffle cover is arranged above the air outlet plate; a circular air outlet is opened in the center of the air outlet plate, and an annular air outlet is opened at the outer edge of the air outlet plate; the annular air guide plate is placed between the circular air outlet and the annular air outlet; a pre-filter, an activated carbon filter and a medium efficiency filter are arranged in sequence from bottom to top inside the column. The air supply method is also disclosed, which combines the advantages of the air supply system and the attached jet, and the air supply airflow adheres to the column wall and enters the working area after hitting the floor, forming an air lake airflow distribution on the ground, that is, the airflow with low wind speed and small temperature difference is evenly diffused along the ground, thereby improving the air supply efficiency; by setting a filtering system, the problem of dust in the floor interlayer flowing with the air supply airflow causing the indoor air quality to decrease can be effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation and air conditioning, and in particular relates to a wall-attached air supply device and an air supply method of an integrated air purification system. Background Art

[0002] The main forms of airflow organization in indoor space are mixed ventilation and displacement ventilation:

[0003] Mixed ventilation uses mechanical force as the driving force to mix the delivered air with the indoor air to achieve the design parameters. Mechanical force is generally "opposite" to the direction of the indoor thermal plume buoyancy force - the supply air and indoor air are strongly mixed, there is basically no thermal stratification phenomenon, and the temperature and humidity are evenly distributed in the whole space. However, mixed ventilation aims to eliminate all indoor loads, and the ventilation efficiency is low; while displacement ventilation replaces indoor polluted air from bottom to top, taking into account the "synergistic" effect of thermal buoyancy and mechanical force, the supply air and indoor air do not mix or only mix a small amount, this form of ventilation can achieve better air quality, high ventilation efficiency, effectively eliminate the cold and heat loads in the work area, and ensure the life or production needs of the regulated object.

[0004] The floor air supply strategy is the same as displacement ventilation, e.g. Fig.10 As shown in the figure, the ventilation system pipes are arranged in the floor mezzanine, and the air enters the room through the floor diffuser, flows upward due to the heat buoyancy of the indoor heat source and / or the suction effect of the exhaust port, and flows out from the top exhaust port. The floor air supply air conditioning system can achieve the same thermal comfort and better air quality with lower energy consumption through appropriate temperature stratification design.

[0005] However, the following deficiencies have been found in the actual engineering application of floor air supply:

[0006] In order to prevent the cold feeling of air supply in the working area, the temperature difference of air supply is usually small with that of the indoor air, and the air supply speed is low. When the same cooling load is borne in the indoor room, the system air volume is large and the terminal energy consumption is high. At the same time, since dust is easily brought into the room by people walking, the floor air supply adopts the design of raising the floor height, and no air duct is added. The space is directly used as the air flow channel. The dust and pollutants inside cannot be purified by the air conditioning unit, and will be sent into the room with the air supply airflow, and the indoor air quality will decrease accordingly. At the same time, if the air supply temperature and relative humidity are not taken seriously and are not controlled, when the air supply temperature is too low or the relative humidity is too high, it will cause condensation on the machine lines under the floor and the building floor, which may easily cause damage, short circuit and corrosion of some equipment, and mold. Summary of the invention

[0007] The purpose of the present invention is to provide a wall-attached air supply device and an air supply method for an integrated air purification system, which solves the problem that the existing floor air supply has poor air supply quality and is prone to equipment damage.

[0008] The present invention is achieved through the following technical solutions:

[0009] A wall-attached air supply device integrated with an air purification system, comprising a column, a pre-buried air duct, a mushroom-head baffle, an air outlet plate and an annular air guide plate;

[0010] The lower end of the column is connected to the embedded air duct, and the upper end is connected to the air outlet plate. The mushroom head baffle cover is arranged above the air outlet plate. A circular air outlet is opened in the center of the air outlet plate, and a ring-shaped air outlet is opened on the outer edge of the air outlet plate.

[0011] The annular air guide plate is placed between the circular air outlet and the annular air outlet;

[0012] The circular air outlet is connected to the inner cavity of the column, and the mushroom-head baffle is a hollow cavity;

[0013] Inside the column, a pre-filter, an activated carbon filter and a medium-efficiency filter are arranged in sequence from bottom to top.

[0014] Furthermore, the circular air outlet and the annular air outlet are both grille air outlets.

[0015] Furthermore, the annular air outlet has the same area as the circular air outlet.

[0016] Furthermore, the cross-sectional shape of the annular air guide plate is semicircular.

[0017] Furthermore, the air supply speed of the circular air outlet ranges from 1 to 4 m / s.

[0018] Furthermore, the mushroom head baffle and the air outlet plate are connected by a plurality of load-bearing cylinders.

[0019] Furthermore, a controller is installed on the side wall of the column.

[0020] Furthermore, during installation, the pre-buried air duct is arranged in the floor interlayer, an air volume regulating device is installed on the pre-buried air duct, and the pre-buried air duct is connected to the air supply unit.

[0021] Furthermore, a box door is provided on the side wall of the column.

[0022] The present invention also discloses an air supply method of the wall-attached air supply device, which comprises the following process:

[0023] The supply air flows into the column from the lower end through the embedded pipe, and is filtered by the pre-filter, activated carbon filter and medium-efficiency filter in turn, and then flows out from the circular air outlet at the upper end of the column. After the supply air flows into the mushroom-head baffle, it spreads in the circumferential direction and flows out from the annular air outlet. The supply air flows downward along the wall of the column, and deflects in the horizontal direction after hitting the ground, forming an air lake that spreads along the ground.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The present invention discloses a wall-attached air supply device for an integrated air purification system, comprising a column, a pre-buried air duct, a mushroom-head baffle, an air outlet plate and an annular air guide plate; a circular air outlet is opened in the center of the air outlet plate, an annular air outlet is opened at the outer edge of the air outlet plate, the annular air guide plate is placed between the circular air outlet and the annular air outlet, the mushroom-head baffle cover is arranged above the air outlet plate, after the supply air flow collides in the mushroom-head baffle, it spreads in the circumferential direction and flows out from the annular air outlet, the supply air flow adheres to the wall surface of the column and flows downward, combining the advantages of the air supply system and the attached jet, replacing the original floor air supply method, the supply air flow adheres to the column wall and goes down, enters the working area after colliding with the floor, and forms an "air lake" airflow distribution on the ground, that is, the airflow with low wind speed and small temperature difference spreads evenly along the ground, thereby improving the air supply efficiency and solving the problem of hot wind in large space in winter. The problem of being difficult to deliver to the work area; at the same time, the air supply device is combined with the column to reduce the space occupied by the system and facilitate installation; through the innovative design of the mushroom-shaped baffle structure at the air supply port, the effect of the column attached to the air supply can be achieved, and at the same time, a pre-filter, an activated carbon filter and a medium-efficiency filter are arranged in sequence from bottom to top inside the column. By setting up a filtering system inside, the problem of dust in the floor interlayer flowing with the air supply air flow causing the indoor air quality to decrease can be effectively solved; the ventilation column can also play a decorative role while supplying air, with a wide range of application scenarios and low economic cost; through the structural design of the annular guide plate, the annular guide plate is combined with the mushroom-shaped baffle, which effectively reduces the air flow resistance in the internal area of ​​the mushroom head, improves the air supply efficiency, and the air supply air flow is deflected and sent into the room through the annular air outlet, and the air supply air flow adheres to the wall of the column and flows downward. The present invention can be promoted, referenced and applied in environments such as electronic equipment rooms, large space offices, and environments with a high cleanliness level.

[0026] Furthermore, the cross-sectional shape of the annular air guide plate is semicircular. When the supply air flow flows out from the air outlet, the annular air guide plate plays a guiding role, reducing the flow resistance of the supply air flow, and deflecting it to flow toward the annular air outlet after guidance.

[0027] Furthermore, the annular air outlet has the same area as the air outlet, ensuring the same air outlet speed and reducing the occurrence of noise.

[0028] The present invention also discloses an air supply method of the wall-attached air supply device, the air supply air flow is delivered into the column through the pre-buried air duct, and is delivered into the room after passing through the pre-filter, the activated carbon filter and the medium-efficiency filter in sequence, thereby effectively improving the indoor air quality and the air supply effect; after the air supply air flow hits the mushroom head baffle, it flows out from the annular air outlet, flows downward along the wall of the column, deflects in the horizontal direction after hitting the ground, forms an air lake which spreads along the ground, produces less blowing sensation to the human body, the air lake covers the entire space, and the air supply effect is relatively ideal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the air supply device of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure decomposition of the air supply device of the present invention;

[0031] Figure 3 It is a schematic diagram of the front cross-sectional structure of the air supply device of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the air outlet plate of the present invention;

[0033] Figure 5 This is a schematic diagram of air flow in the air supply device of the present invention;

[0034] Figure 6 This is a schematic diagram of arranging a room using the air supply device of the present invention;

[0035] Figure 7 This is a schematic diagram of the front view structure of the air supply device of the present invention applied indoors;

[0036] Figure 8 This is a velocity distribution cloud diagram at a cross section of the return air in Example 1 of the present invention. Figure 8 (a1) is the indoor cross-sectional view, Figure 8 (a2) is the velocity distribution cloud diagram of the cross section, Figure 8 (a3) is the ground velocity distribution cloud map;

[0037] Fig. 9 is a contour map of the diagonal section of the building space in Example 2 of the present invention, Fig. 9 (a1) is the indoor cross-sectional view, Fig. 9 (a2) is the velocity distribution cloud diagram of the cross section, Fig. 9 (a3) is the temperature distribution cloud diagram of the cross section;

[0038] Fig.10 It is a contour map of the diagonal section of the building space in comparative example 3 of the present invention, Fig.10 (a1) is the indoor cross-sectional view, Fig.10 (a2) is the velocity distribution cloud diagram of the cross section, Fig.10 (a3) is the temperature distribution cloud diagram of the cross section.

[0039] In the figure: 1. Mushroom-head baffle; 2. Annular air outlet; 3. Annular air guide plate; 4. Air outlet plate; 5. Load-bearing cylinder; 6. Column; 7. Medium-efficiency filter; 8. Activated carbon filter; 9. Pre-filter; 10. Pre-buried air duct; 11. Air volume adjustment device; 12. Controller; 13. First box door; 14. Second box door; 15. Third box door; 16. Circular air outlet. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0041] The idea of ​​the present invention is to optimize the original floor air supply method by using the column wall attached jet air supply method, improve the air supply effect by attaching the air supply, and improve the air quality of the air supply by combining with the air purification device.

[0042] like Figure 1-2 As shown, the present invention provides a wall-mounted air supply device of an integrated air purification system, comprising a column 6, a pre-buried air duct 10, a mushroom-head baffle 1, an air outlet plate 4 and an annular air guide plate 3; the lower end of the column 6 is connected to the pre-buried air duct 10, and the upper end is connected to the air outlet plate 4, and the mushroom-head baffle 1 is covered above the air outlet plate 4; a circular air outlet 16 is opened in the center of the air outlet plate 4, and an annular air outlet 2 is opened at the outer edge of the air outlet plate 4; the annular air guide plate 3 is placed between the circular air outlet 16 and the annular air outlet 2; the circular air outlet 16 is connected to the inner cavity of the column 6, and the mushroom-head baffle 1 is a hollow cavity; a pre-filter 9, an activated carbon filter 8 and a medium-efficiency filter 7 are arranged in sequence from bottom to top inside the column 6.

[0043] The pre-filter 9 plays a coarse filtering role, and the filter materials are mostly glass fiber, artificial fiber, etc., which serves as the initial filtration of the higher-level filter and plays a certain protective role; the activated carbon filter 8 serves as the pre-stage protection of the medium-efficiency filter 7, and is used to adsorb formaldehyde, TVOC, etc., and has the functions of deodorization, dehumidification, mildew prevention, sterilization, purification, etc., and removes environmental pollution; the medium-efficiency filter 7 has a large air volume, small resistance, and can be cleaned and used repeatedly, and is used to capture 1-5um particle dust and various suspended matter.

[0044] The marginal effect of the cylinder will have a certain influence on the flow field. The recommended width of the annular air outlet 2 is 30 to 150 mm.

[0045] The column 6 can be decorated with the same material as the load-bearing column to ensure that it does not affect the indoor aesthetic effect; the air supply device has a wide range of uses, and multiple air supply devices can be arranged in a large space; the shape of the air supply device column 6 can be set to a cylinder or a square column according to the actual environment, and according to the actual space size and scene requirements, it can replace the original floor air supply form to improve the air supply effect.

[0046] The mushroom-shaped baffle is connected to the air outlet plate 4 through a load-bearing cylinder 5 and is installed on the upper part of the column 6. The load-bearing cylinder 5 does not affect the overall airflow.

[0047] The circular air outlet 16 and the annular air outlet 2 are both grille air outlets.

[0048] Preferably, a box door is installed on the side wall of the column 6, and the box door includes a first box door 13, a second box door 14 and a third box door 15, through which the pre-filter 9, the activated carbon filter 8 and the medium-efficiency filter 7 can be taken out respectively, and are used for cleaning, replacing and repairing the filter unit composed of the pre-filter 9, the activated carbon filter 8 and the medium-efficiency filter 7.

[0049] like Figure 2 As shown, the cross-sectional shape of the annular air guide plate 3 is semicircular. When the supply air flow flows out from the air outlet, the annular air guide plate 3 plays a guiding role, reducing the flow resistance of the supply air flow, and deflects the air flow to flow toward the annular air outlet 2 after guiding.

[0050] One end of the embedded air duct 10 is connected to the column 6, and the other end is arranged in the floor interlayer and connected to the air supply unit. The embedded air duct 10 is a fireproof and heat-insulating flexible pipe or a metal pipe.

[0051] The air volume regulating device 11 is installed in the pre-buried air duct 10 and is controlled by electric or manual methods.

[0052] A controller 12 is installed on the column 6 to control parameters such as air supply start and stop, air supply mode heating, cooling, fresh air, air supply speed, and air supply temperature through electricity.

[0053] The radius of column 6 is R, and the height of column 6 is H. The radius of column 6 and the radius of air outlet are determined according to the air supply volume and room size. The areas of annular air outlet 2 and circular air outlet 16 should be the same, and the air supply speed range of circular air outlet 16 is 1-4m / s.

[0054] The key point of the present invention is to replace the original floor air supply method through the innovative design of the air supply device, such as Figure 3 As shown, the annular air outlet 2 is arranged along the circumference of the column 6, and the supply air flow passes through the circular air outlet 16, is blocked by the mushroom head baffle 1, and then flows out from the annular air outlet 2. The supply air flow flows downward along the wall of the column 6, and deflects in the horizontal direction after hitting the ground, forming an air lake with low wind speed and small temperature difference that spreads along the ground; at the same time, an air purification device is added in the column 6 to prevent dust in the floor interlayer from being sent into the room with the supply air flow, thereby improving the supply air quality.

[0055] Example 1

[0056] For large-space offices or data center rooms, the existing technology often uses top mixed air supply or floor air supply, which has problems such as low ventilation efficiency and unsatisfactory air quality. In this embodiment, an air supply device is arranged in the middle of the room, and the air supply unit can use a combined air conditioning unit or a fresh air unit, such as Figure 4 and 5As shown, the embedded air duct 10 is connected thereto and arranged in the floor mezzanine. The supply air flow passes through the filter unit and hits the mushroom-shaped baffle before being sent out from the annular air outlet 2. It adheres to the wall of the column 6 and flows downward to the ground, spreading along the ground to the entire room to form an air lake.

[0057] like Figure 8 As shown in (a1), the room structure parameters are 20m×20m×3m (length×width×height), the radius of the column 6 is 0.5m, the width of the annular air outlet 2 is 0.05m, and the height from the ground is 1.7m. This embodiment is an isothermal fresh air supply situation, the air outlet speed is 4m / s, the return air outlet is arranged on the upper part of the ceiling, the size of the four return air outlets are 200mm×200mm, and the indoor top is reasonably arranged, and the total exhaust air volume is equal to the total supply air volume.

[0058] Example 2

[0059] For office space, such as Fig. 9 As shown in (a1), its structural parameters are 10m×10m×3m. The ventilation column is arranged in the middle of the room. Under the summer cooling condition, the indoor design temperature is 26℃, the heat source is evenly arranged on the side wall with a value of 25.7W / ㎡, the air supply speed is 2m / s, the air supply temperature is 18℃, the return air outlet is arranged at the top of the room, the radius of the column 6 is 0.5m, the width of the annular air outlet 2 is 0.05m, and the size of the four return air outlets is 0.4m×0.4m, which are arranged at the top of the room.

[0060] Comparative Example 3

[0061] like Fig.10 As shown, the rest is the same as Example 2, such as Fig.10 As shown in (a1), its structural parameters are 10m×10m×3m, and the air supply method adopts the existing floor air supply. Four circular air supply ports are arranged on the ground. The air supply port area is 0.1㎡, the air supply speed is 0.8m / s, and the total air supply volume is the same as that in Example 2.

[0062] Analysis of each embodiment

[0063] 1. Analysis of Example 1 of the present invention

[0064] The invention is used as a fresh air supply device. Figure 8 (a2) From the velocity cloud diagram of the indoor middle section, the air supply device can form an attached air supply airflow organization form. When the air supply speed is 4m / s, an air lake can be formed on the floor of a large space office. The air supply distance can reach 10m (end speed 0.2m / s). For short-term stay areas, the air supply speed is preferably less than 0.5m / s. Therefore, the blowing sensation on the human body in the embodiment is relatively small. Figure 8(a3) From the ground velocity cloud diagram, the air supply airflow flows downward along the column wall, and spreads around the column 6 after reaching the ground. The "air lake" fills the entire space (the end wind speed is 0.2m / s), and the air supply effect is relatively ideal.

[0065] 2. Comparison between Example 2 of the present invention and Example 3 of the prior art

[0066] Depend on Fig. 9 (a2), Fig.10 (a2) It can be seen that in terms of velocity distribution, the air supply airflow in Example 2 hits the mushroom-shaped baffle and then flows along the column 6, then hits the ground and spreads along the ground to form an air lake. At the same time, the air supply speed in the air lake is less than 0.3m / s, which will not produce a blowing feeling on people; while in comparison with Example 3, when the floor air supply method is adopted, in order to avoid the blowing feeling on the ankles of the human body, the air supply speed should not be too large. The air supply airflow flows upward under the influence of momentum, and as the air supply distance increases, it continuously sweeps up the surrounding air, and spreads after reaching the ceiling of the room, and then flows to the top exhaust port under the suction effect of the exhaust port. The air supply airflow is not delivered into the working area of ​​the personnel, and the air supply effect is not ideal.

[0067] In terms of temperature distribution, the temperature difference range in the working area is required to be less than or equal to 3.0℃ between the ankle (0.1m from the ground) and the head (1.7m from the ground) in the standing position. Fig. 9 (a3), Fig.10 (a3) It can be seen that no matter whether the air is supplied by the floor or the wall, the vertical temperature difference is less than 3.0℃, which will not cause the phenomenon of "warm head and cold feet" for people. This is also the advantage of displacement ventilation and attached air supply.

[0068] In summary, compared with the existing floor air supply method, the use of this air supply device for attached air supply can reduce the feeling of wind blowing on people, the air supply airflow can spread on the ground to form an "air lake", and the air supply uniformity is improved.

[0069] In order to further compare the advantages and disadvantages of the air supply device design of the present invention with the existing floor air supply method, the energy utilization effectiveness of the air flow distribution method is considered, which can be expressed by the energy utilization coefficient η, that is,

[0070]

[0071] Where t p ,t n , t0——exhaust air temperature, average air temperature in the working area and supply air temperature

[0072] The energy utilization coefficients of Example 2 and Comparative Example 3 calculated by the formula are 1.07 and 0.93 respectively. Therefore, by using the air supply device, the energy utilization efficiency is improved by 13.1%.

[0073] In summary, the present invention has obvious technical advancement, significant economy and strong practicality, and can be promoted, referenced and applied in commercial building environments such as large-space offices and data center computer rooms. It is easy for those skilled in the art to understand that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wall-attached air supply device for an integrated air purification system, characterized in that: It comprises a column (6), a pre-buried air duct (10), a mushroom head baffle (1), an air outlet plate (4) and an annular air guide plate (3); The lower end of the column (6) is connected to the pre-buried air duct (10), and the upper end is connected to the air outlet plate (4); a mushroom head baffle (1) is provided above the air outlet plate (4); a circular air outlet (16) is provided at the center of the air outlet plate (4), and an annular air outlet (2) is provided at the outer edge of the air outlet plate (4); The annular air guide plate (3) is placed between the circular air outlet (16) and the annular air outlet (2); The circular air outlet (16) is connected to the inner cavity of the column (6), and the mushroom head baffle (1) is a hollow cavity; A pre-filter (9), an activated carbon filter (8) and a medium-efficiency filter (7) are arranged in order from bottom to top inside the column (6); Box doors are installed on the side walls of the column (6), and include a first box door (13), a second box door (14), and a third box door (15), for respectively taking out the pre-filter (9), the activated carbon filter (8), and the medium-efficiency filter (7).

2. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: The circular air outlet (16) and the annular air outlet (2) are both grille air outlets.

3. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: The annular air outlet (2) and the circular air outlet (16) have the same area.

4. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: The cross-sectional shape of the annular air guide plate (3) is semicircular.

5. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: The air supply velocity of the circular air outlet (16) ranges from 1 to 4 m / s.

6. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: The mushroom head baffle (1) and the air outlet plate (4) are connected via a plurality of load-bearing columns (5).

7. The wall-attached air supply device of the integrated air purification system according to claim 1, characterized in that: A controller (12) is mounted on the side wall of the column (6).

8. The wall-attached air supply device of an integrated air purification system according to claim 1, characterized in that: During installation, the pre-buried air duct (10) is arranged in the floor interlayer, an air volume adjustment device (11) is installed on the pre-buried air duct, and the pre-buried air duct (10) is connected to the air supply unit.

9. The air supply method of the wall-attached air supply device according to any one of claims 1 to 8, characterized in that: The process includes: The supply air flows into the column (6) from the lower end of the column (6) through the pre-buried pipe, and is filtered by the pre-filter (9), the activated carbon filter (8) and the medium-efficiency filter (7) in sequence, and then flows out from the circular air outlet (16) at the upper end of the column (6). After the supply air flows into the mushroom-head baffle (1), it spreads in the circumferential direction and flows out from the annular air outlet (2). The supply air flows downward along the wall of the column (6), and deflects in the horizontal direction after hitting the ground, forming an air lake that spreads along the ground.

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