Underground air supply assembly and fresh air system

Abstract

The utility model discloses a ground air supply assembly and a fresh air system, the ground air supply assembly comprises a shell, an air duct with an expansion section is formed in the shell, the air duct is used for communicating an air inlet and an air outlet, the air inlet is communicated with an air supply pipeline buried under the ground, the air outlet is communicated with a room, and the area of the air outlet is larger than that of the air inlet. The sectional area of the air channel in the expansion section is gradually increased in the air supply direction. According to the air conditioner, the air duct with the gradually-expanded shape in the air supply assembly is used for gradually reducing the air speed flowing through the air supply assembly, air resistance is reduced, indoor noise is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to a floor air supply component and a fresh air system. Background Art

[0002] Fresh air system is a system used for ventilation and air treatment, usually used in places with strict requirements on indoor air environment. In the existing technology, the ground air supply fresh air system provides a fresh air supply pipeline buried under the indoor ground to transport the fresh air introduced by the fresh air fan to each indoor space, and the end of the air supply pipeline is provided with a ground air supply component to send the fresh air transported by the air supply pipeline to the indoor space.

[0003] The height of the air supply duct is usually limited to a smaller size due to the influence of the ground height. In order to improve the air supply efficiency, the wind speed in the air supply duct is usually higher, which will result in high wind speed and large wind resistance at the end, and even cause the ground air supply component to vibrate and generate loud noise, affecting the user experience. Utility Model Content

[0004] The utility model aims to provide a floor air supply component and a fresh air system which can reduce the wind speed and noise.

[0005] In order to solve the above technical problems, the utility model provides a floor air supply assembly, comprising:

[0006] A shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet connected to the air duct are provided, wherein the air inlet is used to connect to an air supply pipeline buried below the ground, and the air outlet is used to connect to the room, and the area of ​​the air outlet is larger than that of the air inlet;

[0007] Wherein, the air duct has an expansion section, and the cross-sectional area of ​​the expansion section gradually increases in the air supply direction.

[0008] Optionally, the air outlet is opened on the top side of the shell, and the air inlet is opened on the peripheral side of the shell, the shell includes an air inlet shell portion adjacent to the air inlet and an air outlet shell portion adjacent to the air outlet, a first air duct section is formed in the air inlet shell portion, a second air duct section is formed in the air outlet shell portion, the air outlet is located at the upper end of the second air duct section, the first air duct section connects the air inlet and the lower end of the second air duct section, and the second air duct section connects the first air duct section and the air outlet.

[0009] Optionally, the first air duct section as a whole constitutes the expansion section.

[0010] Optionally, the air outlet shell portion includes a side wall opposite to the air inlet and located on the peripheral side, and the side wall is bent in a direction away from the first air duct segment so that the inner wall of the second air duct segment forms a guiding arc surface bent in a direction away from the first air duct segment.

[0011] Optionally, the air inlet and the air outlet are respectively arranged in an elongated shape extending along the width direction, the width direction extends horizontally, the air outlet is larger in the width direction than the air inlet, and the two end sides of the air outlet in the width direction respectively exceed the air inlet.

[0012] Optionally, a line connecting the midpoints of the air inlet and the air outlet in the width direction constitutes a reference line, and a vertical plane coplanar with the reference line is used as a reference plane;

[0013] The floor air supply assembly also includes a guide structure, which is arranged in the second air duct section and divides the second air duct section into a plurality of flow channels, each of the flow channels having a first end close to the air inlet and a second end close to the air outlet, and each of the flow channels is inclined from the first end to the second end in a direction away from the reference plane.

[0014] Optionally, the guide structure includes a plurality of first guide plates and a plurality of second guide plates parallel to the vertical direction, and the upper side and the lower side of each of the first guide plates and each of the second guide plates are respectively connected to the inner wall of the second air duct section, wherein one side of each of the first guide plates close to the air inlet is relatively close to the reference plane, and the other side is relatively far away from the reference plane and inclined toward one end side of the air outlet, and one side of each of the second guide plates close to the air inlet is relatively close to the reference plane, and the other side is relatively far away from the reference plane and inclined toward the other end side of the air outlet, and a flow channel is respectively formed between each two adjacent first guide plates and between each two adjacent second guide plates.

[0015] Optionally, the angle between each of the first guide plates and the reference plane is greater than or equal to 5 degrees and less than or equal to 45 degrees; and / or,

[0016] The included angle between each of the second guide plates and the reference plane is greater than or equal to 5 degrees and less than or equal to 45 degrees.

[0017] Optionally, the floor air supply assembly further includes a cover plate, which is detachably covered on the upper side of the air outlet, an insertion portion which is inserted into the air outlet is protruded from the lower side of the cover plate, and a plurality of ventilation holes are penetrated on the cover plate.

[0018] In order to solve the above technical problems, the utility model provides a fresh air system, comprising:

[0019] New air blower;

[0020] An air supply pipeline is arranged below the fresh air fan, and the air supply pipeline is arranged close to the structural layer; and

[0021] As described above, the air inlet of the floor air supply assembly is connected to the air supply pipeline.

[0022] The technical solution provided by the utility model has the following advantages:

[0023] The utility model provides a floor air supply component and a fresh air system. The floor air supply component includes a shell, and an air duct with an expanded section is formed in the shell. The air duct is used to connect the air inlet and the air outlet, wherein the air inlet is connected to the air supply pipeline buried below the ground, and the air outlet is connected to the room, and its area is larger than the air inlet. The cross-sectional area of ​​the air duct in the expanded section gradually increases in the air supply direction to effectively gradually reduce the wind speed. In the utility model, the wind speed of the air flow flowing through the floor air supply component is gradually reduced by using the air duct with a gradually expanding shape in the floor air supply component, thereby reducing wind resistance, reducing indoor noise, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A three-dimensional structural diagram of an embodiment of a fresh air system provided by the utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a mid-ground air supply assembly;

[0027] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the mid-ground air supply assembly;

[0028] Figure 4 for Figure 2 A top view of the mid-ground air supply assembly;

[0029] Figure 5 for Figure 2 A front view of the mid-ground air supply assembly;

[0030] Figure 6 for Figure 2 Side view of the mid-ground air supply assembly.

[0031] Description of reference numerals:

[0032] 100-floor air supply assembly; 10-housing; 11-air inlet shell; 12-air outlet shell; 121-side wall; 101-air inlet; 102-air outlet; 20-air duct; 21-first air duct section; 22-second air duct section; 23-expanded section; 24-guide arc surface; 30-reference plane; 40-flow guide structure; 41-first flow guide plate; 42-second flow guide plate; 43-flow channel; 50-cover plate; 51-insertion part; 52-ventilation hole; 60-ground locking bracket; 200-fresh air system; 201-fresh air fan; 202-air supply duct. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0035] See also Figure 1 The utility model provides a fresh air system 200, the indoor air outlet of which is arranged on the ground surface or near the ground. Furthermore, the fresh air system 200 includes a fresh air fan 201, an air supply duct 202 and a floor air supply assembly 100. The fresh air fan 201 is usually installed on a wall or a ceiling, and a plurality of air supply ducts 202 can be provided and buried under the ground to distribute the fresh air flow to each room. Generally speaking, the air supply duct 202 can be buried in a leveling layer above the structural layer and below the ground. Preferably, the floor air supply duct 202 is arranged close to the structural layer. In this embodiment, the structural layer refers to the top surface of the surface load-bearing structure of the space served by the fresh air system 200, such as the top surface of the structural board of the room.

[0036] See also Figures 2 to 6 The utility model also provides a floor air supply assembly 100. The floor air supply assembly 100 is arranged at the end of the air supply pipeline 202, and has an air inlet 101 and an air outlet 102. The air inlet 101 is connected to the air supply pipeline 202, and the air outlet 102 is connected to the indoor space. Preferably, multiple floor air supply pipelines 202 are provided to lead to each indoor space, and multiple floor air supply pipelines 202 are correspondingly provided, and are arranged one by one at the ends of the multiple air supply pipelines 202.

[0037] Specifically, see Figure 2 and Figure 3 The ground air supply component 100 includes a shell 10, and the material structure of the shell 10 is not limited. An air duct 20 is formed in the shell 10, and an air inlet 101 and an air outlet 102 are provided to connect the air duct 20. The air inlet 101 is used to connect the air supply pipeline 202 buried below the ground, and the air outlet 102 is used to connect the room. In an optional embodiment, the air inlet 101 can be arranged above the ground or below the ground. The air outlet 102 can be arranged on the ground surface or near the ground. Preferably, the air supply component 100 is basically buried below the ground, wherein the air inlet 101 is below the ground and the air outlet 102 is flush with the ground. Among them, the area of ​​the air outlet 102 is larger than the air inlet 101, and the air duct 20 has an expansion section 23, and the cross-sectional area of ​​the expansion section 23 gradually increases in the air supply direction.

[0038] In this embodiment, the cross-sectional area of ​​the air duct 20 of the floor air supply assembly 100 in the expansion section 23 gradually increases in the air supply direction to effectively and gradually reduce the wind speed. In the utility model, the wind duct 20 with a gradually expanding shape in the floor air supply assembly 100 is used to gradually reduce the wind speed of the air flow passing through the floor air supply assembly 100, thereby reducing wind resistance, reducing indoor noise, and improving the user experience.

[0039] For further information, please refer to Figures 2 to 6 The shell 10 has a bottom side close to the structural layer, a top side located above the bottom side, and a peripheral side extending between the bottom side and the top side. The air outlet 102 is opened on the top side of the shell 10, and the air inlet 101 is opened on the peripheral side of the shell 10. The shell 10 includes an air inlet shell portion 11 adjacent to the air inlet 101 and an air outlet shell portion 12 adjacent to the air outlet 102. A first air duct section 21 is formed in the air inlet shell portion 11, and a second air duct section 22 is formed in the air outlet shell portion 12. The air outlet 102 is located at the upper end of the second air duct section 22. The first air duct section 21 connects the air inlet 101 and the lower end of the second air duct section 22, and the second air duct section 22 connects the first air duct section 21 and the air outlet 102. In other words, in this embodiment, the ground air supply component 100 also plays a role in guiding the fresh air flow inside it to turn. Specifically, the airflow conveyed by the air supply duct 202 and extending roughly in the horizontal direction is turned to guide it to the outlet. Generally speaking, the top surface of the air outlet 102 is substantially flush with the ground surface. In this way, the floor air supply assembly 100 is entirely buried under the ground, which can hide its structure and avoid occupying indoor space.

[0040] Furthermore, the first air duct section 21 as a whole constitutes an enlarged section 23, that is, the cross-sectional area of ​​the first air duct section 21 gradually increases in the air supply direction. Preferably, the size of the first air duct section 21 in the width direction gradually increases, while the size in the height direction remains basically unchanged, so as to achieve the purpose of gradually increasing the cross-sectional area. It should be noted that in the present utility model, please refer to Figure 1 The width direction is substantially parallel to the horizontal plane, that is, extends in the horizontal direction, and the height direction is perpendicular to the width direction and extends in the vertical direction. The width direction is also substantially perpendicular to the air supply direction, which is also the extension direction of the long sides of the elongated air inlet 101 and the air outlet 102.

[0041] Therefore, in a preferred embodiment, the wind speed is gradually slowed down by the expansion section 23 whose height dimension is constant and whose width dimension is gradually increased, so as to reduce wind resistance and noise. In addition, since the height direction is controlled, the height of the ground is effectively controlled, and the space below the ground is fully utilized to slow down the wind speed in the air duct 20, effectively reducing wind resistance and noise.

[0042] Optionally, the first air duct section 21 and / or the second air duct section 22 can be configured as an expansion section 23 in whole or in part. Preferably, the first air duct section 21 as a whole constitutes the expansion section 23. In this way, the wind speed is effectively reduced before being redirected, so as to better reduce wind resistance and reduce noise generated by airflow hitting the inner wall of the air duct 20.

[0043] For further information, see Figure 2 , Figure 3 and Figure 6 The air outlet housing further includes a side wall 121 opposite to the air inlet 101 and located on the peripheral side, and the side wall 121 is bent in a direction away from the first air duct section 21, so that the inner wall of the second air duct section 22 is formed with a guide arc surface 24 bent in a direction away from the first air duct section 21. In this way, the smooth arc surface is used to effectively guide the air supply airflow between the first air duct 20 and the second air duct 20 to turn more smoothly, avoiding a sharp change in the flow direction of the air supply airflow, effectively reducing airflow resistance and wind noise, improving the situation where the high-speed airflow introduced from the air inlet 101 hits the inner wall of the air duct 20, resulting in large airflow noise and large air volume loss, and the air supply airflow is sent to the air outlet 102 more smoothly and evenly.

[0044] Preferably, see ,3 and Figure 4 The air inlet 101 and the air outlet 102 are respectively arranged in a long shape extending in the width direction, the width direction extending in the horizontal direction, the size of the air outlet 102 in the width direction is larger than the air inlet 101, and the two ends of the air outlet 102 in the width direction respectively exceed the air inlet 101. In this way, the air outlet 102 can be more uniform.

[0045] For further information, see Figure 4 , the line connecting the midpoints of the air inlet 101 and the air outlet 102 in the width direction constitutes a reference line, and the vertical plane coplanar with the reference line is used as the reference plane 30. The ground air supply assembly 100 also includes a guide structure 40, which is arranged in the second air duct section 22, and divides the second air duct section 22 into a plurality of flow channels 43, each flow channel 43 has a first end close to the air inlet 101, and a second end close to the air outlet 102, and each flow channel 43 is inclined from the first end to the second end in a direction away from the reference plane 30. It should be noted that the specific shape of the guide structure 40 is not limited, and it can be integrally arranged with the shell 10, or it can be installed separately inside the shell 10. The multiple flow channels 43 can be arranged in a closed state isolated from each other, or they can be arranged in a semi-open state. In this embodiment, the multiple inclined flow channels 43 have a good flow uniformity effect, so as to effectively guide the fresh air delivered by the air inlet 101 to both sides in the width direction, so that the airflow is more evenly distributed to the end sides of the air outlet 102 in the width direction, thereby achieving uniform air outlet, effectively reducing wind speed, and thus reducing wind noise.

[0046] Preferably, the guide structure 40 includes a plurality of first guide plates 41 and a plurality of second guide plates 42 parallel to the vertical direction, and the upper side and the lower side of each first guide plate 41 and each second guide plate 42 are respectively connected to the inner wall of the second air duct section 22, and are preferably integrally formed with the housing 10, so that the cross-sectional shape of the flow channel 43 is flatter and the wind resistance is smaller. Among them, one side of each first guide plate 41 close to the air inlet 101 is relatively close to the reference plane 30, and the other side is relatively far away from the reference plane 30 and inclined toward one end side of the air outlet 102, and one side of each second guide plate 42 close to the air inlet 101 is relatively close to the reference plane 30, and the other side is relatively far away from the reference plane 30 and inclined toward the other end side of the air outlet 102, and a flow channel 43 is formed between each two adjacent first guide plates 41 and between each two adjacent second guide plates 42.

[0047] That is to say, in this embodiment, the airflow introduced from the air inlet 101 is effectively dispersed by the fan-shaped first guide plate 41 and the second guide plate 42 structure, and is sent out more evenly from various parts of the air outlet 102 in the width direction, thereby achieving the technical effects of uniform air discharge, reduced wind speed, and reduced noise. The shape setting structure of the first guide plate 41 and the second guide plate 42 is simple, easy to manufacture, and can play a good guiding effect.

[0048] Please continue reading Figure 4, the angle a between each first guide plate 41 and the reference plane 30 is greater than or equal to 5 degrees and less than or equal to 45 degrees; and / or the angle b between each second guide plate 42 and the reference plane 30 is greater than or equal to 5 degrees and less than or equal to 45 degrees. In this way, the first guide plate 41 and the second guide plate 42 are respectively inclined at a suitable angle relative to the reference plane 30, so as to avoid the angle being too small to effectively disperse the airflow, or the angle being too large to cause excessive wind resistance, which has an adverse effect on the air supply efficiency.

[0049] Based on the above embodiment, the air outlet 102 is preferably arranged flush with the ground, and the floor air supply assembly 100 further includes a cover plate 50, which is detachably arranged on the upper side of the air outlet 102, and an insertion portion 51 inserted into the air outlet 102 is convexly arranged on the lower side of the cover plate 50, and a plurality of ventilation holes 52 are formed on the cover plate 50. Figure 2 and Figure 3 In this embodiment, the cover plate 50 is preferably substantially flush with the ground after assembly to achieve an aesthetically pleasing and convenient installation effect. The cover plate 50 is configured to be detachably covered on the air outlet 102 using the inserting portion 51 to facilitate disassembly, cleaning and maintenance.

[0050] In order to fix the air supply assembly 100 properly, it can prevent shaking after assembly, which may cause poor sealing between the air outlet ducts or vibration and generate additional noise. Figure 1 Preferably, the air supply assembly 100 is placed on the structural layer through a ground locking bracket 60. Specifically, the ground locking bracket 60 can be roughly designed in an L-shaped plate shape, and includes a first mounting plate and a second mounting plate that intersect correspondingly, wherein the first mounting plate is welded to the outside of the shell 10, and the second mounting plate is detachably fixed to the structural layer by bolts and other structures.

[0051] Obviously, the above described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the utility model.

Claims

1. A ground air supply assembly, characterized in that: include: A shell, wherein an air duct is formed in the shell, and an air inlet and an air outlet connected to the air duct are provided, wherein the air inlet is used to connect to an air supply pipeline buried below the ground, and the air outlet is used to connect to the room, and the area of ​​the air outlet is larger than that of the air inlet; Wherein, the air duct has an expansion section, and the cross-sectional area of ​​the expansion section gradually increases in the air supply direction.

2. The floor air supply assembly according to claim 1, characterized in that: The air outlet is opened on the top side of the shell, and the air inlet is opened on the peripheral side of the shell. The shell includes an air inlet shell portion adjacent to the air inlet and an air outlet shell portion adjacent to the air outlet. A first air duct section is formed in the air inlet shell portion, and a second air duct section is formed in the air outlet shell portion. The air outlet is located at the upper end of the second air duct section, the first air duct section connects the air inlet and the lower end of the second air duct section, and the second air duct section connects the first air duct section and the air outlet.

3. The floor air supply assembly according to claim 2, characterized in that: The first air duct section as a whole constitutes the expansion section.

4. The floor air supply assembly according to claim 2, characterized in that: The air outlet shell portion includes a side wall opposite to the air inlet and located on the peripheral side, and the side wall is bent in a direction away from the first air duct section so that the inner wall of the second air duct section forms a guiding arc surface bent in a direction away from the first air duct section.

5. The floor air supply assembly according to any one of claims 2 to 4, characterized in that: The air inlet and the air outlet are respectively arranged in an elongated shape extending along the width direction, the width direction extends along the horizontal direction, the air outlet is larger in the width direction than the air inlet, and the two end sides of the air outlet in the width direction respectively exceed the air inlet.

6. The floor air supply assembly according to claim 5, characterized in that: A line connecting the midpoints of the air inlet and the air outlet in the width direction constitutes a reference line, and a vertical plane coplanar with the reference line is used as a reference plane; The floor air supply assembly also includes a guide structure, which is arranged in the second air duct section and divides the second air duct section into a plurality of flow channels, each of the flow channels having a first end close to the air inlet and a second end close to the air outlet, and each of the flow channels is inclined from the first end to the second end in a direction away from the reference plane.

7. The floor air supply assembly according to claim 6, characterized in that: The guide structure includes a plurality of first guide plates and a plurality of second guide plates parallel to the vertical direction, the upper side edges and the lower side edges of each of the first guide plates and each of the second guide plates are respectively connected to the inner wall of the second air duct section, wherein one side edge of each of the first guide plates close to the air inlet is relatively close to the reference plane, and the other side edge is relatively far away from the reference plane and inclined toward one end side of the air outlet, and one side edge of each of the second guide plates close to the air inlet is relatively close to the reference plane, and the other side edge is relatively far away from the reference plane and inclined toward the other end side of the air outlet, and a flow channel is respectively formed between each two adjacent first guide plates and between each two adjacent second guide plates.

8. The floor air supply assembly according to claim 7, characterized in that: The angle between each of the first guide plates and the reference plane is greater than or equal to 5 degrees and less than or equal to 45 degrees; and / or, The included angle between each of the second guide plates and the reference plane is greater than or equal to 5 degrees and less than or equal to 45 degrees.

9. The floor air supply assembly according to any one of claims 2 to 4, characterized in that: The floor air supply assembly also includes a cover plate, which is detachably covered on the upper side of the air outlet, an insertion portion that is inserted into the air outlet is protruded from the lower side of the cover plate, and a plurality of ventilation holes are penetrated on the cover plate.

10. A fresh air system, characterized in that: include: New air blower; An air supply pipeline is arranged below the fresh air fan, and the air supply pipeline is arranged close to the structural layer; and The floor air supply assembly according to any one of claims 1 to 9, wherein the air inlet of the floor air supply assembly is connected to the air supply pipeline.

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