A down-blast system suitable for large areas

Abstract

The utility model relates to a kind of lower air supply systems suitable for large area space, indoor side wall has opposite first part and second part, first part is equipped with multiple first air supply outlet, second part is equipped with multiple second air supply outlet, multiple first air supply outlet and multiple second air supply outlet are symmetrically distributed about horizontal first symmetry axis, the system further includes integrated return air device located in the middle of indoor and integrated with multiple first return air outlet, multiple first return air outlet is symmetrically distributed about the first symmetry axis.The utility model provides a kind of lower air supply systems suitable for large area space, can solve the problem of uneven air flow field in existing large area room or functional area.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning systems, specifically a downdraft air supply system suitable for large spaces. Background Technology

[0002] In engineering cases of residential radiant air conditioning systems, from the perspective of human physiological thermal comfort, a large proportion use centralized fresh air systems or systems with return air via displacement ventilation. Typically, for a room, such as a bedroom or living room, one to two or two to three (depending on the room size) floor-mounted displacement air vents or skirting board air vents are installed in a corner near an exterior window or balcony. Some systems use room-wide return air, while others use centralized return air for the entire unit, thereby achieving a reasonable and organized flow of air. Figure 1 The image shows a floor plan of an open space within an office showroom, with an area of ​​approximately 80 square meters. 2 .from Figure 1 As can be seen, there is a sofa lounge / business area, a formal negotiation area, a product display area (lower right part), and a corridor entrance area. The location of the floor air vents or skirting board air vents is as follows: Figure 1 , Figure 1 The distribution of the air supply duct 3 on the ground is also shown, as are the locations of the exhaust fans 2. Figure 2 As shown, the exhaust fans are distributed in each functional area. The effects of this scheme are: 1. Airflow circulates independently within each functional area, resulting in poor airflow between areas and in areas with fewer exhaust fans, causing uneven airflow and a localized draft, thus reducing indoor thermal comfort; 2. In larger spaces (greater than 50㎡), such as living rooms or shared spaces, even areas where people stay may not be in the airflow return zone, resulting in a lack of comfortable humidity; 3. The cooling energy from air vents near exterior windows is easily absorbed by solar radiation, while supply air vents cannot effectively absorb heat generated by people indoors, thus failing to provide thermal comfort. Therefore, more supply air vents need to be placed near exterior windows to achieve the required cooling capacity, resulting in energy waste. Simultaneously, displacement ventilation in areas far from supply air vents cannot effectively absorb heat generated by people indoors, thus failing to provide thermal comfort. Additionally, as... Figure 1 As shown, the floor air supply duct is not laid along the wall and edge, which requires floor height and cannot optimize the total height of the floor air supply layer and the floor heating layer. Summary of the Invention

[0003] This invention provides a downdraft air supply system suitable for large spaces, which can solve the problem of uneven airflow field in existing large rooms or functional areas.

[0004] The present invention relates to a downdraft air supply system suitable for large spaces. The interior sidewall has a first part and a second part. The first part is provided with a plurality of first air supply outlets, and the second part is provided with a plurality of second air supply outlets. The plurality of first air supply outlets and the plurality of second air supply outlets are symmetrically distributed about a horizontal first axis of symmetry. The system also includes an integrated return air device located in the middle of the room and integrating a plurality of first return air outlets. The plurality of first return air outlets are symmetrically distributed about the first axis of symmetry.

[0005] Preferably, the interior sidewall has a third part and a fourth part, the third part is provided with a plurality of third air outlets, and the fourth part is provided with a plurality of fourth air outlets. The plurality of third air outlets and the plurality of fourth air outlets are symmetrically distributed about a horizontal second axis of symmetry. The integrated return air device integrates a plurality of second return air outlets, which are symmetrically distributed about a second axis of symmetry.

[0006] Preferably, the second axis of symmetry is perpendicular to the first axis of symmetry.

[0007] Preferably, some of the first air outlets are symmetrically distributed about the second axis of symmetry, and some of the second air outlets are symmetrically distributed about the second axis of symmetry.

[0008] Preferably, some of the third air outlets are symmetrically distributed about the first axis of symmetry, and some of the fourth air outlets are symmetrically distributed about the first axis of symmetry.

[0009] Preferably, each of the first return air vents is symmetrical about the first axis of symmetry, and each of the second return air vents is symmetrical about the second axis of symmetry.

[0010] Preferably, the system includes an air supply duct connected to the first air outlet or the second air outlet, the air supply duct being disposed within the wall or arranged around the wall.

[0011] Preferably, the integrated return air device is located at the top of the room or functional area.

[0012] Compared with the prior art, the present invention has the following advantages: The downdraft air supply system of the present invention, which is suitable for large-area spaces, arranges multiple first air supply outlets symmetrically about a first axis of symmetry, and concentrates the first return air outlet between the first air supply outlet and the second air supply outlet, located in the middle of the two. In this way, air flows from the air supply outlets on the side wall of the room to the return air outlet in the middle of the room, forming a uniform airflow in the room and improving the uniformity of the airflow field. Even for large spaces, it can prevent the areas far from the air supply outlets from not being effectively ventilated and absorbing the heat generated by the people in the room, thereby improving the thermal comfort of the indoor environment. Attached Figure Description

[0013] Figure 1This is a schematic diagram showing the distribution of the ground supply air ducts in the existing supply and return air system.

[0014] Figure 2 This is a schematic diagram showing the distribution of exhaust fans in the existing supply and return air system.

[0015] Figure 3 This is a schematic diagram showing the distribution of the air supply and exhaust vents of an indoor air supply and return system according to an embodiment of the present invention.

[0016] Figure Labels Figure 1 and Figure 2 1. Air outlet, 2. Exhaust fan, 3. Air duct.

[0017] Figure 3 1 First part, 2 First air supply outlet, 3 Second part, 4 Second air supply outlet, 5 Third part, 6 Third air supply outlet, 7 Fourth part, 8 Fourth air supply outlet, 9 First return air outlet, 10 Second return air outlet, 11 First axis of symmetry, 12 Second axis of symmetry. Detailed Implementation

[0018] This utility model provides a downdraft air supply system suitable for large spaces, used in rooms or areas with an area greater than or equal to 50 square meters. The interior sidewalls have opposing first portions 1 and second portions 3, and opposing third portions 5 and fourth portions 7. In this embodiment, as shown... Figure 3 The diagram shows a plan view of a rectangular room from above. The first part 1 has multiple first air supply vents 2, and the second part 3 has multiple second air supply vents 4. The multiple first air supply vents 2 and multiple second air supply vents 4 are symmetrically distributed about a horizontal first axis of symmetry 11. The first axis of symmetry 11 passes through the center of the room on the plan view. The system also includes an integrated return air device located in the center of the room. The integrated return air device integrates multiple first return air vents 9; in this embodiment, there are two first return air vents 9, which are symmetrically distributed about the first axis of symmetry 11.

[0019] By symmetrically arranging multiple first air supply outlets 2 and multiple second air supply outlets 4 about a first axis of symmetry 11, and simultaneously concentrating the first return air outlet 9 between the first air supply outlets 2 and the second air supply outlets 4 and located in the middle of them, air flows from the air supply outlets on the side walls of the room to the return air outlet in the middle of the room, such as... Figure 3As indicated by the arrows, a uniform airflow is created within the room, improving the uniformity of the airflow field. Even in large spaces, this prevents areas far from the air outlets from failing to ventilate effectively and absorbing heat generated by people indoors. In this invention, the number of air outlets on the window side can be reduced compared to existing technologies, while maintaining a similar number as possible to the opposite side. Furthermore, by controlling the airflow velocity, the effect of the replaced "air lake" sweeping across the floor can be ensured, effectively absorbing heat generated by people indoors and achieving a comfortable feeling.

[0020] like Figure 3 As shown, in this embodiment, the third part 5 is provided with multiple third air supply outlets 6, and the fourth part 7 is provided with multiple fourth air supply outlets 8. The multiple third air supply outlets 6 and the multiple fourth air supply outlets 8 are symmetrically distributed about a second axis of symmetry 12, which is perpendicular to the first axis of symmetry 11. The integrated return air device integrates multiple second return air outlets 10, which in this embodiment are two return air outlets, symmetrically distributed about the second axis of symmetry 12. This makes the distribution of air supply outlets more uniform, and the airflow formed in the room more uniform.

[0021] like Figure 3 As shown, some of the first air supply outlets 2 are symmetrically distributed about the second axis of symmetry 12, but in some areas, symmetrical arrangement is not possible due to missing or obstructed walls. Some of the second air supply outlets 4 are symmetrically distributed about the second axis of symmetry 12. Some of the third air supply outlets 6 are symmetrically distributed about the first axis of symmetry 11, and some of the fourth air supply outlets 8 are symmetrically distributed about the first axis of symmetry 11. Each of the first return air outlets 9 is symmetrical about the first axis of symmetry 11, and each of the second return air outlets 10 is symmetrical about the second axis of symmetry 12. The intersection of the first axis of symmetry 11 and the second axis of symmetry 12 is the center of the indoor planar space, thus forming an arrangement where the return air outlet is located in the center of the room, and the air supply outlets are evenly arranged around the return air outlet (except in cases where symmetrical arrangement is not possible due to missing or obstructed walls). This fully embodies the design concepts of the annular symmetrical design of the air supply outlets and the centralized symmetrical design of the top return air outlets.

[0022] In this embodiment, the system includes an air supply duct connected to the first air outlet 2 or the second air outlet 4, the air supply duct being installed inside the wall or surrounding the wall. This optimizes the arrangement of the air supply duct, preventing it from appearing as... Figure 1 The arrangement shown occupies the indoor floor height along with the underfloor heating water pipes. When the downdraft air supply system in this invention is combined with the sensible heat terminal of a radiant air conditioner, and with the corresponding air and water systems for the "outer" and "inner" zones of the room, the indoor thermal and humidity comfort can be optimized.

[0023] In this embodiment, the integrated return air device is located at the top of the room or functional area. Thus, airflow flows from the air outlet near the ground to the top center of the room, forming an upward-sloping airflow, which further improves the uniformity of the airflow field. For functional areas of hundreds or thousands of square meters, this design concept can still be expanded. However, it is necessary to first divide the larger functional area into several smaller functional areas, and set up a "module" in each small functional area using the downdraft air supply system of this invention.

[0024] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions made by those skilled in the art within the spirit and scope of this utility model also fall within the scope of protection of this utility model.

Claims

1. A downdraft air supply system suitable for large spaces, wherein the interior sidewall has opposing first and second portions, characterized in that, The first part is provided with multiple first air supply outlets, and the second part is provided with multiple second air supply outlets. The multiple first air supply outlets and multiple second air supply outlets are symmetrically distributed about a first horizontal axis of symmetry. The system also includes an integrated return air device located in the center of the room and integrating multiple first return air outlets. The multiple first return air outlets are symmetrically distributed about the first axis of symmetry.

2. The system according to claim 1, characterized in that, The interior sidewall has a third part and a fourth part, the third part is provided with a plurality of third air outlets, and the fourth part is provided with a plurality of fourth air outlets. The plurality of third air outlets and the plurality of fourth air outlets are symmetrically distributed about a horizontal second axis of symmetry. The integrated return air device integrates a plurality of second return air outlets, which are symmetrically distributed about a second axis of symmetry.

3. The system according to claim 2, characterized in that, The second axis of symmetry is perpendicular to the first axis of symmetry.

4. The system according to claim 3, characterized in that, Some of the first air outlets are symmetrically distributed about the second axis of symmetry, and some of the second air outlets are symmetrically distributed about the second axis of symmetry.

5. The system according to claim 3, characterized in that, Some of the third air outlets are symmetrically distributed about the first axis of symmetry, and some of the fourth air outlets are symmetrically distributed about the first axis of symmetry.

6. The system according to claim 3, characterized in that, Each of the first return air vents is symmetrical about the first axis of symmetry, and each of the second return air vents is symmetrical about the second axis of symmetry.

7. The system according to claim 3, characterized in that, The system includes an air supply duct connected to the first air outlet or the second air outlet, the air supply duct being installed inside the wall or arranged around the wall.

8. The system according to claim 1, characterized in that, The integrated return air device is located at the top of the room or functional area.

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