An integrated jet ventilation system combining AHU and FCU

Abstract

This invention provides an integrated jet ventilation device combining an air intake hood (AHU) and a fan control unit (FCU), comprising a housing, an AHU unit and an FCU unit arranged side-by-side within the housing, an airflow transition section connecting the two, an array-type jet outlet module, and a maintenance port module. Air processed by the AHU unit enters the FCU unit via the airflow transition section for temperature regulation, and is then delivered as an adjustable-angle jet through the array-type jet outlet module. This integrated design saves installation space, reduces heat and cold losses and fan energy consumption, improves airflow accuracy and uniformity, and lowers maintenance costs through centralized layout.

Description

Technical Field

[0001] This invention belongs to the technical field of air conditioning and ventilation equipment, specifically relating to an integrated jet ventilation device combining an air handling unit (AHU) and a ventilation control unit (FCU). Background Technology

[0002] In ventilation and air conditioning systems for large spaces (such as convention centers, stadiums, industrial plants, and large office building atriums), traditional solutions often employ a separate arrangement of air handling units (AHUs) and fan coil units (FCUs), i.e., a split model of "centralized AHU placement in the machine room + decentralized FCU installation at the terminal + long duct connections." However, this split arrangement method has many inherent drawbacks: (1) High space and construction costs: AHU requires separate computer room space, FCU requires reserved scattered installation positions, and long-distance air ducts require additional layout. This not only occupies a lot of building space, but also affects the aesthetics of the interior layout and space utilization. Moreover, the construction process is complicated and the cycle is long. (2) Large airflow energy consumption and mixing loss: The duct path from AHU to FCU is long, and there is a large resistance loss along the duct, which leads to increased fan energy consumption. At the same time, the two operate independently and cannot achieve energy synergy optimization. The cold / heat loss rate reaches 15-20%, which further increases the overall energy consumption of the system. (3) Poor control linkage: The parameter adjustment of AHU and FCU depends on the external control system. AHU and FCU belong to different control units, which can easily cause temperature stratification, airflow short circuit or dead zone. Moreover, the matching delay of fresh air ratio and supply air temperature and humidity is ≥10s, which can easily lead to mismatch between fresh air volume and terminal temperature adjustment, further reducing system operating efficiency and environmental comfort. (4) Low operation and maintenance efficiency: AHU and FCU are distributed and maintenance needs to be carried out separately, which increases the operation and maintenance time.

[0003] Therefore, there is an urgent need for an integrated structure that can achieve functions such as fresh air treatment, airflow mixing, terminal temperature control, and jet air delivery, in order to reduce space occupation, reduce energy consumption, optimize airflow distribution, and improve control linkage. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a low-energy-consumption, large jet outlet structure that integrates AHU and FCU.

[0005] The present invention is implemented as follows: an integrated jet ventilation device for AHU and FCU, comprising a housing, an AHU unit, an FCU unit, an airflow transition section, an array-type jet outlet module, and an inspection port module; The shell includes a supporting main frame and a partition, the partition being disposed on the supporting main frame to form an internal space; The AHU unit and the FCU unit are arranged side by side in the internal space; and the AHU unit is provided with a first air inlet and a first air outlet on both sides respectively; the FCU unit is provided with a second air inlet on one side, and the second air inlet and the first air outlet are located on the same side; the FCU unit is provided with a second air outlet on the top. The airflow transition section is disposed in the internal space and is connected to the first air outlet and the second air inlet respectively. The array-type jet air outlet module is installed on the housing and includes an air collection box and multiple jet air outlets. The air collection box is connected to the second air outlet and the jet air outlets. The multiple jet air outlets are located above the air collection box and are installed through the housing. The inspection port module is located on the housing.

[0006] Furthermore, it also includes a return air module, comprising a first return air inlet, a second return air inlet, and a return air window. The first return air inlet is located on the AHU unit, and the second return air inlet is located on the FCU unit. Both the first and second return air inlets are located on the same side as the first air inlet. The return air window is located on the partition corresponding to the first return air inlet. The two return air inlets introduce indoor return air into the AHU unit and the FCU unit respectively through the return air window.

[0007] Furthermore, it also includes a filtration module and a heat and humidity treatment module, both of which are located inside the AHU unit. They filter and heat and humidity treat the fresh air flowing in from the first air inlet and the return air introduced from the first return air inlet before sending them to the first air outlet and entering the flow transition section.

[0008] Furthermore, the FCU unit is also equipped with a variable frequency fan to adapt to the terminal temperature control requirements.

[0009] Furthermore, the partition consists of a sound insulation board, a buffer board, and a protective board, arranged from the inside out, and the three are connected by a full coating of high-temperature resistant silicone adhesive.

[0010] Furthermore, the inspection port module is as follows: an inspection door is provided on the partition plate on the same side as the second air inlet, the inspection door is connected to the main supporting frame by a hinge, and the inspection door is equipped with a magnetic sealing strip.

[0011] Furthermore, the jet outlet is a plastic ABS spherical outlet, and the angle of the jet outlet is adjustable.

[0012] Furthermore, the housing includes a rear end face, a bottom face, two side faces and an arc-shaped face. The jet outlet is located in the upper middle part of the housing and passes through the arc-shaped face, forming a certain angle with the ground to achieve multi-angle coverage of the wind direction.

[0013] Furthermore, the airflow transition section is sealed to the first air outlet and the second air inlet using sealing strips.

[0014] The present invention has the following advantages: 1. Improved space utilization: The AHU, FCU, and jet air outlet are integrated into the same structure, saving the space occupied by the AHU machine room and separate air ducts, and reducing the installation space. 2. Significantly reduced energy consumption: By eliminating the long ducts of traditional split systems, the "AHU→FCU→jet outlet" connection is directly achieved through the internal chamber of the frame, reducing cold / heat loss to less than 5% and fan energy consumption by 10-15%; 3. Optimized air delivery precision: The airflow of the AHU and FCU is mixed and matched internally, the temperature adjustment at the FCU terminal is more accurate, the array-type jet air outlet structure can adjust the jet angle to cover a larger area of ​​space, the internal temperature gradient is ≤±1℃, and the airflow uniformity is improved by 40%; 4. Reduced operation and maintenance costs: The equipment is centrally integrated, and maintenance of AHU and FCU can be completed through the side access door, improving the efficiency of later operation and maintenance. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an exploded view of the structure of the present invention.

[0017] Figure 2 This is an exploded view of the structure of the present invention from another perspective.

[0018] Figure 3 This is an exploded view of the internal structure of the present invention.

[0019] Figure 4 This is a front view of the structure of the present invention.

[0020] Figure 5 This is a left view of the structure of the present invention.

[0021] Figure 6 This is a top view of the internal structure of the present invention.

[0022] Figure 7 for Figure 6 Sectional view of AA.

[0023] Reference numerals: 1. Shell; 11. Main supporting frame; 12. Partition; 121. Sound insulation and heat preservation board; 122. Buffer board; 123. Protective board; 2. AHU unit; 21. First air inlet; 22. First air outlet; 3. FCU unit; 31. Second air inlet; 32. Second air outlet; 4. Airflow transition section; 5. Array-type jet air outlet module; 51. Air collection box; 52. Jet air outlet; 6. Inspection port module; 7. Return air module; 71. First return air outlet; 72. Second return air outlet; 73. Return air window. Detailed Implementation

[0024] refer to Figures 1 to 7 As shown, this embodiment provides an integrated jet ventilation device for AHU and FCU, including a housing 1, an AHU unit 2, an FCU unit 3, an airflow transition section 4, an array-type jet outlet module 5, an inspection port module 6, and a return air module 7. The shell 1 includes a supporting main frame 11 and a partition 12. The partition 12 is located on the supporting main frame 11, forming an internal space, and externally forming a rear end face, a bottom face, two side faces and an arc-shaped face. The supporting main frame 11 is formed by welding 50mm×50mm×4.0mm galvanized square tubes. The partition 12 consists of, from the inside to the outside, a 20mm+20mm thick sound insulation and heat insulation board 121 (thermal conductivity ≤0.033W / (m・K), cold / heat loss rate ≤5%), a buffer board 122 (made of 15mm thick flexible plywood to buffer airflow impact and avoid structural resonance), and a protective board 123 (made of 3mm thick aluminum-plastic composite board, which provides protection and also makes the appearance smooth). The three are connected by a full coating of high-temperature resistant silicone sealant, and the air leakage rate of the splice seam is ≤0.5%.

[0025] AHU unit 2 and FCU unit 3 are arranged side by side in the internal space; AHU unit 2 is provided with a first air inlet 21 and a first air outlet 22 on both sides respectively; FCU unit 3 is provided with a second air inlet 31 on one side, and the second air inlet 31 and the first air outlet 22 are located on the same side, which facilitates connection to airflow transition section 4 and reduces airflow transition path, thereby improving efficiency; FCU unit 3 is provided with a second air outlet 32 ​​on the top. The return air module 7 includes a first return air inlet 71, a second return air inlet 72, and a return air window 73. The first return air inlet 71 is located on the AHU unit 2, and the second return air inlet 72 is located on the FCU unit 3. Both the first return air inlet 71 and the second return air inlet 72 are located on the same side as the first air inlet 21. The return air window 73 is located on the partition 12 on the side corresponding to the first return air inlet 71. The two return air inlets (71, 72) introduce the indoor return air into the AHU unit 2 and the FCU unit 3 respectively through the return air window 73. By centrally introducing return air through the return air window 73, the return air path is shortened, the friction resistance and cold / heat loss are reduced, thereby reducing the system's cold / heat loss rate. The AHU unit 2 is also equipped with a filter module and a heat and humidity treatment module (not shown in the figure). The fresh air flowing in from the first air inlet 21 and the return air introduced from the first return air inlet 71 are filtered and heat and humidity treated before being sent to the first air outlet 22 and entering the airflow transition section 4. The filter module removes particulate matter and other impurities from the air, and the heat and humidity treatment module adjusts the air to the target temperature and humidity to ensure that the air sent into the FCU unit 3 meets the indoor environmental requirements and reduces system operation failures caused by air quality problems. FCU unit 3 is also equipped with a variable frequency fan (not shown in the figure). The variable frequency fan can dynamically adjust the air volume according to the terminal temperature control requirements, avoiding the "overpowered" phenomenon of traditional fixed frequency fans. Combined with short-path airflow transmission (eliminating long air ducts), the fan energy consumption is reduced by 10-15%. In addition, after the treated air enters FCU unit 3, the variable frequency fan accurately matches the air volume with the terminal load, improves the temperature control response speed, reduces temperature fluctuations, and keeps the indoor temperature gradient ≤±1℃.

[0026] The airflow transition section 4 is set in the internal space and is sealed and connected to the first air outlet 22 and the second air inlet 31 by a sealing strip; to achieve short-path connection between the first air outlet 22 and the second air inlet 31, reduce the airflow transmission path length, optimize the transmission efficiency of airflow from AHU unit 2 to FCU unit 3, and adapt to the requirements of equipment integration design. An array-type jet air outlet module 5 is installed on the housing 1, including an air collection box 51 and a 3×3 array of circular jet air outlets 52 (a total of 9, with a diameter of φ350mm). The air collection box 51 connects the second air outlet 32 ​​and the jet air outlets 52, and uniformly distributes airflow to each jet air outlet 52 through the air collection box 51, ensuring uniform airflow at each jet air outlet 52. The jet air outlets 52 are spherical ABS plastic outlets, and the angle can be adjusted by manually moving the inner ball. The jet air outlets 52 are located above the air collection box 51 and pass through the upper middle part of the arc surface of the housing 1, forming a certain angle with the ground. With the adjustable angle function of the jet air outlets 52, the air supply direction can be flexibly adjusted according to the spatial environment to meet the airflow needs of different areas in a large space. The nine jet air outlets 52 in the array layout work together, and combined with the angle adjustment function, the temperature gradient within the coverage area of ​​a large space is ≤±1℃, effectively avoiding temperature stratification and airflow dead zones. The maintenance access module 6 is located on the housing 1. Specifically, a maintenance door is provided on the partition 12 on the same side as the second air inlet 31. The integrated AHU unit 2 and FCU unit 3 can be maintained directly through this maintenance door without having to operate the distributed components separately, reducing maintenance time and improving later maintenance efficiency. The maintenance door is connected to the supporting main frame 11 by a hinge, and the maintenance door is equipped with a magnetic sealing strip to ensure that the air leakage rate is ≤0.3%, effectively avoiding airflow leakage and energy loss caused by poor sealing of the maintenance access, and ensuring the overall operating efficiency of the equipment.

[0027] The working principle of the device of this invention is as follows: 1. Air introduction and pretreatment Fresh air and return air mixing: Outdoor fresh air enters AHU unit 2 through the first air inlet 21, while indoor return air is centrally introduced through return air window 73 of return air module 7, and enters AHU unit 2 and FCU unit 3 through the first return air inlet 71 and the second return air inlet 72 respectively. Filtration and heat and humidity treatment: The filter module inside AHU unit 2 removes particulate matter and other impurities from the air, and the heat and humidity treatment module adjusts the mixed air to the target temperature and humidity to ensure that the air quality entering the subsequent stages meets the indoor environmental requirements.

[0028] 2. Short-path airflow transmission and terminal temperature control Efficient air transfer from AHU to FCU: The treated air enters the airflow transition section 4 through the first air outlet 22 of AHU unit 2, and then enters FCU unit 3 through the second air inlet 31 connected by the airflow transition section 4, realizing short-path airflow transfer from AHU to FCU, reducing friction resistance and cold / heat loss.

[0029] FCU Variable Frequency Control: The variable frequency fan in FCU unit 3 dynamically adjusts the air volume according to the terminal temperature control requirements, accurately matches the terminal load, improves the temperature control response speed, reduces temperature fluctuations, and makes the indoor temperature gradient ≤±1℃.

[0030] 3. Array-type jet air delivery and spatial coverage Airflow distribution and angle adjustment: The air processed by FCU unit 3 enters the air collection box 51 through the second air outlet 32. The air collection box 51 evenly distributes the airflow to the 3×3 array jet outlet 52. The angle of the jet outlet 52 is adjustable, and the upper part of the arc surface passing through the shell 1 forms a certain angle with the ground to achieve multi-angle coverage of the wind direction.

[0031] Uniform air supply and temperature control: The array-style jet air outlets 52 work together to deliver airflow out of the room, and combined with the angle adjustment function, ensure that the temperature gradient within the large space coverage area is ≤±1℃, avoiding temperature stratification and airflow dead zones.

[0032] The above integrated process of "fresh air + return air pretreatment → short path transmission → variable frequency terminal temperature control → array jet air supply" achieves the technical objectives of space reuse, energy consumption reduction, precise air supply, and convenient operation and maintenance.

[0033] The integrated jet ventilation device combining AHU and FCU provided by this invention can bring the following technical effects: 1. Improved space utilization: The AHU, FCU, and jet air outlet are integrated into the same structure, saving the space occupied by the AHU machine room and separate air ducts, and reducing the installation space. 2. Significantly reduced energy consumption: By eliminating the long ducts of traditional split systems, the "AHU→FCU→jet outlet" connection is directly achieved through the internal chamber of the frame, reducing cold / heat loss to less than 5% and fan energy consumption by 10-15%; 3. Optimized air delivery precision: The airflow of the AHU and FCU is mixed and matched internally, the temperature adjustment at the FCU terminal is more accurate, the array-type jet air outlet structure can adjust the jet angle to cover a larger area of ​​space, the internal temperature gradient is ≤±1℃, and the airflow uniformity is improved by 40%; 4. Reduced operation and maintenance costs: The equipment is centrally integrated, and maintenance of AHU and FCU can be completed through the side access door, improving the efficiency of later operation and maintenance.

[0034] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An integrated jet ventilation device combining AHU and FCU, characterized in that: Includes housing, AHU unit, FCU unit, airflow transition section, array jet outlet module and maintenance port module; The shell includes a supporting main frame and a partition, the partition being disposed on the supporting main frame to form an internal space; The AHU unit and the FCU unit are arranged side by side in the internal space; and the AHU unit is provided with a first air inlet and a first air outlet on both sides respectively; the FCU unit is provided with a second air inlet on one side, and the second air inlet and the first air outlet are located on the same side; the FCU unit is provided with a second air outlet on the top. The airflow transition section is disposed in the internal space and is connected to the first air outlet and the second air inlet respectively. The array-type jet air outlet module is installed on the housing and includes an air collection box and multiple jet air outlets. The air collection box is connected to the second air outlet and the jet air outlets. The multiple jet air outlets are located above the air collection box and are installed through the housing. The inspection port module is located on the housing.

2. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: It also includes a return air module, comprising a first return air inlet, a second return air inlet, and a return air window. The first return air inlet is located on the AHU unit, and the second return air inlet is located on the FCU unit. Both the first and second return air inlets are located on the same side as the first air inlet. The return air window is located on the partition corresponding to the first return air inlet. The two return air inlets introduce indoor return air into the AHU unit and the FCU unit respectively through the return air window.

3. The integrated jet ventilation device combining AHU and FCU according to claim 2, characterized in that: It also includes a filtration module and a heat and humidity treatment module, both of which are located inside the AHU unit. They filter and heat and humidity treat the fresh air flowing in from the first air inlet and the return air introduced from the first return air inlet before sending them to the first air outlet and entering the flow transition section.

4. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: The FCU unit is also equipped with a variable frequency fan to adapt to the terminal temperature control requirements.

5. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: The partition consists of a sound insulation board, a buffer board, and a protective board, arranged from the inside out. The three are connected by a full coating of high-temperature resistant silicone adhesive.

6. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: The inspection port module is as follows: an inspection door is provided on the partition plate on the same side as the second air inlet. The inspection door is connected to the main supporting frame by a hinge, and the inspection door is equipped with a magnetic sealing strip.

7. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: The jet outlet is a plastic ABS spherical outlet, and the angle of the jet outlet is adjustable.

8. The integrated jet ventilation device for AHU and FCU according to claim 7, characterized in that: The housing includes a rear end face, a bottom face, two sides and an arc-shaped face. The jet outlet is located in the upper middle part of the housing and passes through the arc-shaped face, forming a certain angle with the ground to achieve multi-angle coverage of the wind direction.

9. The integrated jet ventilation device combining AHU and FCU according to claim 1, characterized in that: The airflow transition section is sealed to the first air outlet and the second air inlet using sealing strips.

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