Air distribution box and underground air supply fresh air system

Abstract

The air distribution box comprises a box body and an air guide structure, the box body is provided with an air cavity and comprises a first shell plate and a second shell plate which are arranged in a crossed mode, the first shell plate is provided with an air inlet communicated with the air cavity, the second shell plate is provided with a plurality of air outlets communicated with the air cavity, and the air guide structure is arranged between the first shell plate and the second shell plate. An air supply path is formed between the air inlet and each air outlet, the air guide structure is arranged in the cavity and provided with a flow guide face extending from the air inlet to the air outlets, and the flow guide face is arranged in an arc-shaped bending mode in the direction away from the air supply path. According to the utility model, the arc-shaped flow guide surface guides the supplied air flow in the air cavity to steer more smoothly, so that the airflow resistance can be effectively reduced, and the conditions of large airflow noise and large air volume loss caused by the fact that fresh air impacts the inner wall of the air cavity after entering the air cavity are improved, so that the supplied air flow is smoothly and uniformly conveyed to each air outlet; and the fresh air is more uniformly distributed to a plurality of ground air distribution pipelines.

Description

Technical Field

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

[0002] The fresh air system is a system used for ventilation and air treatment, and is usually used in places with strict requirements on the indoor air environment. In the existing technology, the floor-supply fresh air system provides an air distribution box as an important component. The air distribution box is used to distribute the fresh air flow introduced into the room by the fresh air fan to multiple air distribution pipelines to supply fresh air to each indoor space. However, the air distribution box in the floor-supply air system is limited by its installation conditions, and its air inlet and air outlet are usually distributed on two planes set at an angle, that is, the air flow entering the air distribution box from the air inlet needs to turn at a large angle before it can flow out from the air outlet. On the one hand, this structure leads to large wind resistance, large air volume loss, and high working noise. On the other hand, due to the uneven wind pressure distribution in the air distribution box, it also leads to large differences in the air supply volume of multiple air outlets. Utility Model Content

[0003] The utility model aims to provide an air distribution box and a floor air supply fresh air system which has a flow-uniforming effect and can more evenly distribute fresh air to a plurality of floor air distribution pipelines and reduce noise.

[0004] In order to solve the above technical problems, the utility model provides an air distribution box for a floor air supply fresh air system, characterized in that the air distribution box comprises:

[0005] A box body, the box body having an air cavity, and comprising a first shell plate and a second shell plate arranged to intersect each other, the inner sides of the first shell plate and the second shell plate respectively forming inner walls of the air cavity, the first shell plate being provided with an air inlet connected to the air cavity, the second shell plate being provided with a plurality of air outlets connected to the air cavity, the air inlet and each of the air outlets forming an air supply path; and,

[0006] The wind guiding structure is arranged in the wind cavity, and the wind guiding structure has a guiding surface extending from the air inlet toward each of the air outlets, and the guiding surface is curved in an arc shape in a direction away from the air supply path.

[0007] Optionally, the first shell plate is arranged on the top side of the box body, a bottom plate is arranged on the bottom side of the box body, the lower side of the bottom plate is arranged horizontally and is used to be close to the ground, the second shell plate is extended between the first shell plate and the bottom plate, and each air outlet is respectively arranged at the lower end of the second shell plate.

[0008] Optionally, a back plate is extended between the first shell plate and the bottom plate, and the outer side of the back plate is vertically arranged and used to be attached to the wall.

[0009] Optionally, the box body is arranged in an elongated shape extending horizontally in the length direction, the second shell plate includes a second front shell plate opposite to the back plate and extending horizontally in the length direction, the second shell plate also includes a second side shell plate arranged at at least one end of the box body in the length direction, the second side shell plate extends between the second front shell plate and the back plate, a plurality of air outlets are opened at the lower end of the second front shell plate, the plurality of air outlets are spaced apart along the length direction, and at least one air outlet is opened at the lower end of the second side shell plate.

[0010] Optionally, a plurality of the air inlets are provided, and the plurality of the air inlets are distributed on the first shell plate at intervals in the length direction and are used to connect to an air inlet pipeline extending in the up-down direction.

[0011] Optionally, the second front shell plate is at least partially inclined downwardly away from the back plate.

[0012] Optionally, the wind guide structure includes a first wind guide plate, which is bent downward, and the upper surface of the first wind guide plate constitutes the guide surface, the upper side of the first wind guide plate is against the back plate, and the lower side is against the bottom plate.

[0013] Optionally, the wind guide structure also includes a second wind guide plate, which is bent upward, and the lower surface of the second wind guide plate constitutes the guide surface, the upper side edge of the second wind guide plate is abutted against the lower side of the first shell, the lower side edge of the second wind guide plate is abutted against the inner side of the second side shell plate, and the second wind guide plate is located above the first wind guide plate.

[0014] Optionally, the upper edge of the first air guide plate extends in the length direction and is abutted against the middle of the back plate in the height direction. The first air guide plate, the back plate and the bottom plate together enclose a long channel. A baffle is arranged between the end side of the first air guide plate and the second side shell plate. The baffle at least covers the part of the air outlet on the second side shell plate that connects to the long channel.

[0015] In order to solve the above problems, the utility model also provides a floor air supply fresh air system, comprising:

[0016] New air blower;

[0017] An air distribution box is arranged below the fresh air fan, the air distribution box is an air distribution box as described in any one of the above items, and the air inlet is connected to the fresh air outlet of the fresh air fan through an air inlet pipeline; and

[0018] There are multiple ground air distribution pipelines, and the multiple ground air distribution pipelines are connected to the multiple air outlets in a one-to-one correspondence.

[0019] The technical solution provided by the utility model has the following advantages:

[0020] The utility model provides an air distribution box for a floor air supply fresh air system, comprising a box body and an air guide structure, wherein the box body has an air cavity, and comprises a first shell plate and a second shell plate arranged in an intersecting manner, an air inlet connected to the air cavity is provided on the first shell plate, and a plurality of air outlets connected to the air cavity are provided on the second shell plate, an air supply path is formed between the air inlet and each of the air outlets, the air guide structure is in the cavity, and has a guide surface extending from the air inlet toward each of the air outlets, and the guide surface is curved in an arc shape in a direction away from the air supply path. In the utility model, the arc-shaped guide surface guides the air supply airflow in the air cavity to turn more smoothly, which can effectively reduce the airflow resistance, improve the situation where the fresh air enters the air cavity and hits the inner wall of the air cavity, resulting in large airflow noise and large air volume loss, thereby smoothly and evenly delivering the air supply airflow to each of the air outlets, and more evenly distributing the fresh air to multiple floor air distribution ducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A three-dimensional structural diagram of an embodiment of a floor air supply fresh air system provided by the utility model

[0023] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the center-split bellows;

[0024] Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of another embodiment of a center-split bellows, wherein part of the box body is not shown;

[0025] Figure 4 for Figure 2 Top view of the center-split bellows;

[0026] Figure 5 for Figure 4 Sectional view at AA in the middle;

[0027] Figure 6 for Figure 2 Front view of the center-split bellows;

[0028] Figure 7 for Figure 6 Sectional view at the middle BB;

[0029] Figure 8 for Figure 2 Right side view of the center split bellows.

[0030] Description of reference numerals:

[0031] 100-air distribution box; 10-box; 11-first shell plate; 12-second shell plate; 121-second front shell plate; 122-second side shell plate; 13-bottom plate; 14-back plate; 101-wind cavity; 102-air supply path; 103-air inlet; 104-air outlet; 105-long channel; 20-air guide structure; 21-first air guide plate; 22-second air guide plate; 23-flow guide surface; 24-baffle; 30-plug connector; 200-floor fresh air supply system; 201-fresh air blower; 202-air supply duct; 203-floor air distribution duct. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] See also Figure 1 The utility model provides a floor air supply fresh air system 200, which includes a fresh air fan 201, an air distribution box 100 and a floor air distribution duct 203. The fresh air fan 201 is usually installed on a wall or a ceiling, and a plurality of floor air distribution ducts 203 are provided and buried under the ground to distribute the fresh air flow to each room. The air distribution box 100 is arranged between the fresh air fan 201 and the ground air distribution duct 203, and it can be installed on the wall or on the ground. The air distribution box 100 is arranged below the fresh air fan 201, and is used to distribute the fresh air flow introduced by the fresh air fan 201 to each room. Specifically, the air distribution box 100 has an air inlet 103 and an air outlet 104, wherein the air inlet 103 is connected to the fresh air outlet of the fresh air fan 201 through an air supply duct 202 extending up and down, and a plurality of air outlets 104 are provided, and a plurality of ground air distribution ducts 203 are connected to the plurality of air outlets 104 one by one, and extend to all directions to realize the supply of fresh air.

[0035] The utility model also provides a wind box 100, see Figures 2 to 8The wind box 100 includes a box body 10 and an air guide structure 20, wherein the material structure of the box body 10 is not limited, the wind box has an air cavity 101, and includes a first shell plate 11 and a second shell plate 12 arranged to intersect, the inner sides of the first shell plate 11 and the second shell plate 12 respectively constitute the inner walls of the air cavity 101, that is, the first shell plate 11 and the second shell plate 12 and other parts of the box body 10 together enclose the air cavity 101.

[0036] The first shell plate 11 is provided with an air inlet 103 connected to the air cavity 101, and the second shell plate 12 is provided with a plurality of air outlets 104 connected to the air cavity 101. This is due to the installation conditions of the floor-air supply fresh air system 200. For example, in one embodiment, the air distribution box 100 in the floor-air supply fresh air system 200 is usually installed on the ground, below the fresh air fan 201. In this embodiment, the air distribution box 100 takes in air from the upper side and discharges air from the surrounding side. That is to say, the first shell plate 11 is arranged on the top side of the box body 10, and the second shell plate 12 is arranged on the surrounding side of the box body 10. Then, the airflow flowing into the air cavity 101 from the air inlet 103 needs to turn nearly 90 degrees in the air cavity 101 and then flow out from the air outlet 104. Figure 5 and 7 As shown, an air supply path 102 is formed between the air inlet 103 and each of the air outlets 104 , and the air supply path 102 is bent approximately at a right angle.

[0037] Please continue to refer to Figure 2 , Figure 5 and Figure 7 The air guide structure 20 is in the cavity, and its specific structure is not limited, as long as it has a guide surface 23 extending from the air inlet 103 to each air outlet 104, and the guide surface 23 is curved in an arc shape in the direction away from the air supply path 102. In this embodiment, the arc-shaped guide surface 23 guides the air supply airflow in the air cavity 101 to turn more smoothly, avoiding a sharp change in the flow direction of the air supply airflow, and can effectively reduce the airflow resistance, improve the situation where the fresh air enters the air cavity 101 and hits the inner wall of the air cavity 101, resulting in large airflow noise and large air volume loss, so that the air supply airflow is sent to each air outlet 104 more smoothly and evenly, and the fresh air is distributed more evenly to multiple ground-divided air ducts 203, reducing the difference in air volume between multiple ground-divided air ducts 203.

[0038] Based on the previous embodiment, please refer to Figure 2The first shell plate 11 is arranged on the top side of the box body 10, and the bottom side of the box body 10 is provided with a bottom plate 13, and the lower side of the bottom plate 13 is arranged horizontally to be horizontally close to the ground. The second shell plate 12 extends between the first shell plate 11 and the bottom plate 13 to form the peripheral wall of the wind cavity 101, which can be specifically provided with one or more pieces. Each air outlet 104 is located at the lower end of the second shell plate 12, so as to be connected with the local air distribution pipelines 203 buried under the ground. Specifically, a plug connector 30 can be provided on the outside of each air outlet 104, and the plug connector 30 has a quick-connect structure to quickly and well-sealedly connect with the local air distribution pipelines 203. In this way, the air distribution box 100 is stably supported, and the structure is compact, so that it can be installed in a small space.

[0039] Furthermore, a back plate 14 is extended between the first shell plate 11 and the bottom plate 13. The outer side of the back plate 14 is vertically arranged and used to be close to the wall. The back plate 14 is vertically close to the wall and is located between the first shell plate 11 and the bottom plate 13, providing strong support for the air distribution box 100, enhancing the stability of the air distribution box 100, and is particularly suitable for installation environments close to the wall.

[0040] In an optional embodiment, in order to set more air outlets 104, the air distribution box 100 is set in an elongated shape, and its length direction extends horizontally. The second shell plate 12 includes a second front shell plate 121 and a second side shell plate 122. The second front shell plate 121 is arranged opposite to the back plate 14, and the length direction also extends horizontally. The second side shell plate 122 is arranged on at least one end side of the box body 10 in the length direction. The second side shell plate 122 extends between the second front shell plate 121 and the back plate 14. The lower end of the second front shell plate 121 is provided with a plurality of air outlets 104 spaced apart, and the lower end of the second side shell plate 122 is provided with at least one air outlet 104. This design allows the air distribution box 100 to be arranged in an elongated strip shape, which is suitable for the needs of indoor installation space, and at the same time has enough air distribution outlets to guide fresh air to various indoor spaces.

[0041] Preferably, the air distribution box 100 has multiple air inlets 103, which are spaced apart along the length direction of the first shell plate 11 and connected to the air inlet pipeline extending in the vertical direction. This design helps to increase the air intake volume, thereby improving the ventilation efficiency of the floor air supply fresh air system 200 and the uniformity of fresh air distribution.

[0042] In order to increase the volume of the air cavity 101 and slow down the wind speed during the air supply process, the second front shell plate 121 is at least partially tilted downward and arranged away from the back plate 14. This tilted design helps to ensure the smoothness of the air supply path 102 and gradually slow down the flow speed during the air flow process, thereby reducing the dynamic pressure.

[0043] Please continue reading Figure 2 , Figure 5 and Figure 7 The wind guide structure 20 includes a first wind guide plate 21, which is bent downward, and its upper surface forms a guide surface 23. The upper side of the first wind guide plate 21 is against the back plate 14, and the lower side is against the bottom plate 13. The first wind guide plate 21 is provided to help guide the airflow to turn smoothly, and guide the fresh air flow more evenly to the multiple air outlets 104 on the second front shell plate 121, while reducing wind resistance and noise.

[0044] Furthermore, the air guide structure 20 further includes a second air guide plate 22, which is bent upward, and its lower surface constitutes a guide surface 23, and the upper side of the second air guide plate 22 is attached to the lower side of the first shell plate 11, and the lower side is attached to the inner side of the second side shell plate 122. The second air guide plate 22 is located above the first air guide plate 21. This double-layer air guide plate design further optimizes the distribution and steering efficiency of the airflow, and effectively guides the airflow to the air outlet 104 on the second side shell plate 122, thereby increasing the air volume of the air outlet 104.

[0045] In one embodiment, please refer to Figure 8 The upper side edge of the first air guide plate 21 extends in the length direction and abuts against the middle of the back plate 14 in the height direction. The first air guide plate 21, the back plate 14 and the bottom plate 13 together enclose a long channel 105. A baffle plate 24 is provided between the end side of the first air guide plate 21 and the second side shell plate 122. The baffle plate 24 at least covers the portion of the air outlet 104 connected to the long channel 105, thereby blocking the long channel 105 to prevent airflow backflow and dust from entering the long channel 105.

[0046] 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 wind box for a floor air supply fresh air system, characterized in that: The air distribution box comprises: A box body, the box body having an air cavity, and comprising a first shell plate and a second shell plate arranged to intersect each other, the inner sides of the first shell plate and the second shell plate respectively forming inner walls of the air cavity, the first shell plate being provided with an air inlet connected to the air cavity, the second shell plate being provided with a plurality of air outlets connected to the air cavity, the air inlet and each of the air outlets forming an air supply path; and, The wind guiding structure is arranged in the wind cavity, and the wind guiding structure has a guiding surface extending from the air inlet toward each of the air outlets, and the guiding surface is curved in an arc shape in a direction away from the air supply path.

2. The air distribution box according to claim 1, characterized in that: The first shell plate is arranged on the top side of the box body, and a bottom plate is arranged on the bottom side of the box body. The lower side of the bottom plate is arranged horizontally and is used to be close to the ground. The second shell plate is extended between the first shell plate and the bottom plate, and each of the air outlets is respectively arranged at the lower end of the second shell plate.

3. The air distribution box according to claim 2, characterized in that: A back plate is further extended between the first shell plate and the bottom plate, and the outer side of the back plate is vertically arranged and used to be attached to the wall.

4. The air distribution box according to claim 3, characterized in that: The box body is arranged in an elongated shape extending horizontally in the length direction, the second shell plate includes a second front shell plate opposite to the back plate and extending horizontally in the length direction, the second shell plate also includes a second side shell plate arranged at at least one end of the box body in the length direction, the second side shell plate extends between the second front shell plate and the back plate, a plurality of the air outlets are opened at the lower end of the second front shell plate, the plurality of the air outlets are spaced apart in the length direction, and at least one of the air outlets is opened at the lower end of the second side shell plate.

5. The air distribution box according to claim 4, characterized in that: There are a plurality of air inlets, which are distributed on the first shell plate at intervals in the length direction and are used to connect to an air inlet pipeline extending in the up-down direction.

6. The air distribution box according to claim 4, characterized in that: The second front shell plate is at least partially inclined downwardly in a direction away from the back plate.

7. The air distribution box according to claim 4, characterized in that: The wind guide structure includes a first wind guide plate, which is bent downward, and the upper surface of the first wind guide plate constitutes the guide surface. The upper side of the first wind guide plate is against the back plate, and the lower side is against the bottom plate.

8. The air distribution box according to claim 7, characterized in that: The wind guide structure also includes a second wind guide plate, which is bent upward, and the lower surface of the second wind guide plate constitutes the guide surface, the upper side of the second wind guide plate is abutted against the lower side of the first shell, the lower side of the second wind guide plate is abutted against the inner side of the second side shell plate, and the second wind guide plate is located above the first wind guide plate.

9. The air distribution box according to claim 7, characterized in that: The upper edge of the first air guide plate extends in the length direction and is abutted against the middle of the back plate in the height direction. The first air guide plate, the back plate and the bottom plate together enclose a long channel. A baffle is provided between the end side of the first air guide plate and the second side shell plate. The baffle at least covers the part of the air outlet on the second side shell plate that is connected to the long channel.

10. A floor-to-air fresh air system, characterized in that: include: New air blower; An air distribution box is arranged below the fresh air fan, the air distribution box is the air distribution box according to any one of claims 1 to 9, the air inlet is connected to the fresh air outlet of the fresh air fan through an air inlet pipeline; and There are multiple ground air distribution pipelines, and the multiple ground air distribution pipelines are connected to the multiple air outlets in a one-to-one correspondence.

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