Fresh air supply system and construction method

Abstract

The invention discloses a fresh air supply system and a construction method, and relates to the technical field of heating and ventilation air conditioning systems, a raised floor is installed on the building ground of a room, a ground air outlet is formed in the raised floor, the position of the ground air outlet can be the wall corner of the room, and a fresh air supply pipe is arranged in an inner cavity of the raised floor; the fresh air supply pipe is formed by combining antibacterial material PP pipes, an air inlet of the fresh air supply pipe is connected with an outdoor clean air source, an empty space middle partition is arranged in an inner cavity of the raised floor, the top of the raised floor is connected with an upper partition wall, and the top of the upper partition wall is connected with the bottom of an indoor upper suspended ceiling. According to the air conditioner indoor unit, the scientific indoor air organization flow direction can be provided, it is ensured that fresh air can be conveyed outwards through the air outlet in the floor, and fresh air is supplemented into a whole room. Fresh air flows from the floor from low to high, the body feeling is comfortable, splicing of the raised floor needs to have certain sealing performance, and the air leakage rate is controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of heating, ventilation and air conditioning systems, and in particular to a fresh air supply system and a construction method. Background Art

[0002] At present, the common fresh air supply system uses fresh air ducts (galvanized pipes, etc.) to directly supply air to the designated rooms. This type of air supply has four main defects:

[0003] (I) The air supply outlet is in the ceiling of the room, and fresh air is supplied from top to bottom to achieve the effect of ventilation and improving the air in the room. However, the return air outlet of the room is also in the ceiling. From the perspective of indoor air flow organization, vortices are prone to occur, resulting in unsatisfactory indoor air purification effect.

[0004] (2) When a fire occurs, smoke floats above, and the fresh air inlet is also above, which can easily cause toxic smoke to descend with the fresh air, endangering personnel safety to a certain extent. At the same time, the smoke above is hot air. When fresh air is added in, it first mixes with the hot air, and the temperature of the fresh air rises rapidly, causing most of the fresh air to be retained at the top, resulting in little effect of air supply.

[0005] (iii) Later, the room partitions were adjusted for the second time, and the original layout of the fresh air duct was no longer suitable, so the cost of changing the duct was relatively high.

[0006] (IV) Traditional floor air supply is only point-to-point and buried in the floor or concrete layer. It has small air volume and is troublesome to repair and replace later. Therefore, we have improved the above-mentioned existing technology based on actual usage. Summary of the invention

[0007] The purpose of the present invention is to provide a fresh air supply system and a construction method to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A fresh air supply system comprises an elevated floor, which is installed on the building floor of a room, and a ground air outlet is opened on the elevated floor, and the position of the ground air outlet can be the corner of the room, the inner cavity of the elevated floor is provided with a fresh air supply duct, the fresh air supply duct is composed of a combination of antibacterial material PP pipes, and the air inlet of the fresh air supply duct is connected to an outdoor clean air source, and the inner cavity of the elevated floor is provided with an elevated layer middle partition, the top of the elevated floor is connected to an upper partition wall, and the top of the upper partition wall is connected to the bottom of the upper ceiling of the room, and an upper return air outlet is provided on the upper ceiling, equipment pipeline maintenance areas are arranged around the elevated floor, and the air outlet of each group of fresh air supply ducts is connected to a fresh air duct end air valve.

[0010] A construction method for a fresh air supply system, the construction method comprising the following steps:

[0011] S1: Treat the floor in the room and use epoxy floor paint or PVC floor materials that are not easy to produce dust to ensure that the entire cavity area under the raised floor is clean. After the epoxy floor paint is applied, the position of the column support of the raised floor is popped up on the ground according to the module of the raised floor;

[0012] S2: Arrange the position of the fresh air supply duct according to the position of the raised floor. After the position of the fresh air supply duct is determined, start to install the fresh air supply duct. The fresh air supply duct uses PP material pipe with high cleanliness requirements. The wall thickness is strictly in accordance with the design requirements. The construction standard is strictly in accordance with the ventilation acceptance specification requirements. The construction quality control points are the same as the clean room installation standards. After the construction of the fresh air supply duct is completed, the opening of the fresh air supply duct is promptly sealed with plastic film to prevent dust from entering;

[0013] S3: The construction of raised floor should ensure the firmness of the raised floor support. The bottom surface of the support should be fixed with epoxy glue, and the upper plane of the support frame should be seamlessly glued with 3M double-sided tape. The installation of the raised floor should be tightly fitted, and the flatness and gaps should meet the design requirements. The underground cavity channel must be leak-free, and the air leakage rate must meet the design requirements. During the installation of the raised floor, other personnel are strictly prohibited from entering. The installers must wear work clothes. External personnel will hand the wiped clean panels to the buffer room, and the indoor personnel will assemble them piece by piece. The assembly time is scheduled to be completed within one day. For the reserved openings and floor air outlets, plastic film air outlets should be used in time to prevent dust from entering. Finally, the surface decoration layer is constructed.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a fresh air supply system and construction method, which can provide a more scientific indoor air organization flow direction, ensure that the fresh air can be transported outward through the air outlet on the floor, so that the whole room is replenished with fresh air. The fresh air flows from the floor from low to high, which is more comfortable. The splicing of the elevated floor needs to have a certain degree of sealing to control the air leakage rate. Avoiding fresh air leakage will lead to a decrease in wind force at the outlet, increase the utilization rate of fresh air for trapped people in a fire, avoid suffocation and death caused by smoke, and reduce the impact of the room on the pipeline in the later stage, which is convenient for equipment maintenance without polluting the fresh air channel area and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a top view of the present invention.

[0018] In the figure: 1. Ground air outlet; 2. Raised floor; 3. Fresh air supply duct; 4. Middle partition of the elevated floor; 5. Upper partition wall; 6. Upper suspended ceiling; 7. Upper return air outlet; 8. Equipment and pipeline maintenance area; 9. Air valve at the end of the fresh air duct. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-2 The present invention provides a technical solution: a fresh air supply system, comprising an elevated floor 2, the elevated floor 2 is installed on the building floor of the room, a ground air outlet 1 is opened on the elevated floor 2, and the position of the ground air outlet 1 can be the corner of the room, the inner cavity of the elevated floor 2 is provided with a fresh air supply duct 3, the fresh air supply duct 3 is composed of a combination of antibacterial material PP pipes, and the air inlet of the fresh air supply duct 3 is connected to the outdoor clean air source, and the inner cavity of the elevated floor 2 is provided with an elevated middle partition 4, the top of the elevated floor 2 is connected to an upper partition wall 5, and the top of the upper partition wall 5 is connected to the bottom of the upper indoor ceiling 6, and the upper ceiling 6 is provided with an upper return air outlet 7, the equipment pipeline maintenance area 8 is arranged around the elevated floor 2, and the air outlet of each group of fresh air supply ducts 3 is connected to a fresh air duct end air valve 9.

[0021] It should be noted that the main working principle of the present invention is that outdoor fresh air is sent to the designated area through the main pipes on each floor. The lower part of the elevated floor 2 in this area is a cavity, which is occupied by fresh air. The fresh air in the cavity under the floor in this area forms a certain pressure, which can ensure that the fresh air can be transported outward through the ground air outlet 1 on the elevated floor 2. The ground air outlet 1 on the elevated floor 2 can be adjusted according to the layout of the functional area. Within the functional area, for example, the ground air outlet 1 is set on the elevated floor 2 at the corner position, so that the whole room is replenished with fresh air. The fresh air flows from the floor from low to high, and the body feels more comfortable.

[0022] A construction method for a fresh air supply system, the construction method comprising the following steps:

[0023] S1: Treat the floor of the building in the room, use epoxy floor paint or PVC floor materials and other dust-proof materials for laying, and do dust-proof treatment to ensure that the entire cavity area under the raised floor 2 is clean. After the epoxy floor paint is completed, the position of the column support of the raised floor 2 is popped up on the ground according to the module of the raised floor 2. The height of the lower space of the raised floor 2 must meet the requirements, and the clearance height must not be less than 200mm to meet the needs of arranging the ventilation pipes below. The supporting bearing capacity of the raised floor 2 must meet the actual engineering needs to ensure that the upper activities will not cause damage to the lower space;

[0024] S2: Arrange the position of the fresh air supply duct 3 according to the position of the raised floor 2. After the position of the fresh air supply duct 3 is determined, start to install the fresh air supply duct 3. The fresh air supply duct 3 uses a PP material pipe with high cleanliness requirements. The wall thickness is strictly in accordance with the design requirements. The construction standard is strictly in accordance with the ventilation acceptance specification requirements. The construction quality control points are the same as the clean room installation standards. After the construction of the fresh air supply duct 3 is completed, the opening of the fresh air supply duct 3 is promptly sealed with a plastic film to prevent dust from entering;

[0025] S3: The construction of raised floor 2 must ensure that the support of raised floor 2 is firm. The bottom surface of the support is fixed with epoxy glue. The upper plane of the support frame is seamlessly glued with 3M double-sided tape. The installation of raised floor 2 should be tightly fitted, flatness, and gap composite design requirements. The underground cavity channel must be free of air leakage, and the air leakage rate must meet the design requirements. During the installation of raised floor 2, other personnel are strictly prohibited from entering. The installers must wear work clothes. External personnel will hand the wiped clean plates to the buffer room, and the indoor personnel will assemble them piece by piece. The assembly time is scheduled to be completed within one day. For the reserved openings and floor air outlets 1, use plastic film air outlets in time to prevent dust from entering, and finally carry out the surface decoration layer construction.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fresh air supply system, characterized in that: The invention comprises an elevated floor (2), wherein the elevated floor (2) is installed on the floor of a room, a ground air outlet (1) is provided on the elevated floor (2), and the position of the ground air outlet (1) can be at the corner of the room, the inner cavity of the elevated floor (2) is provided with a fresh air supply pipe (3), the fresh air supply pipe (3) is composed of a combination of antibacterial material PP pipes, and the air inlet of the fresh air supply pipe (3) is connected to an outdoor clean air source, and the inner cavity of the elevated floor (2) is provided with an elevated layer middle partition (4), the top of the elevated floor (2) is connected to an upper partition wall (5), and the top of the upper partition wall (5) is connected to the bottom of an upper indoor ceiling (6), and an upper return air outlet (7) is provided on the upper ceiling (6), and equipment pipeline maintenance areas (8) are provided around the elevated floor (2), and the air outlet of each group of fresh air supply pipes (3) is connected to a fresh air pipe end air valve (9).

2. The construction method of a fresh air supply system according to claim 1, characterized in that: The construction method includes the following steps: S1: Treat the floor of the room and use epoxy floor paint or PVC floor material or other dust-prone materials for laying, so as to ensure that the entire cavity area under the raised floor (2) is clean. After the epoxy floor paint is applied, the position of the column support of the raised floor (2) is popped out on the ground according to the module of the raised floor (2); S2: Arrange the position of the fresh air supply duct (3) according to the position of the raised floor (2). After the position of the fresh air supply duct (3) is determined, start to install the fresh air supply duct (3). The fresh air supply duct (3) uses a PP material pipe with high cleanliness requirements. The wall thickness is strictly in accordance with the design requirements. The construction standard is strictly in accordance with the ventilation acceptance specification requirements. The construction quality control points are the same as the clean room installation standards. After the construction of the fresh air supply duct (3) is completed, the opening of the fresh air supply duct (3) is promptly sealed with a plastic film to prevent dust from entering; S3: During the construction of the raised floor (2), it is necessary to ensure that the support of the raised floor (2) is firm. The bottom surface of the support is fixed with epoxy glue. The upper plane of the support frame is seamlessly glued with 3M double-sided tape. The installation of the raised floor (2) should be tightly fitted, and the flatness and gaps should meet the design requirements. The underground cavity channel must be free of air leakage, and the air leakage rate must meet the design requirements. During the installation of the raised floor (2), other personnel are strictly prohibited from entering. The installers must wear work clothes. External personnel will hand the wiped clean panels to the buffer room, and the indoor personnel will assemble them piece by piece. The assembly time is scheduled to be completed within one day. For the reserved openings and floor air outlets (1), plastic film air outlets should be used in time to prevent dust from entering. Finally, the surface decoration layer is constructed.

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