Fan coil ventilation system

Abstract

The utility model relates to the technical field of air supply, and discloses a fan coil ventilation system which comprises a fan, an air supply pipe is communicated with the left side of the outer wall of the fan, a condenser is communicated with the middle of the air supply pipe, a flow dividing box is arranged on the left side of the air supply pipe, and the left end of the air supply pipe is communicated with the flow dividing box. The left side of the outer wall of the flow dividing box communicates with a plurality of branch pipes, the other ends of the multiple branch pipes communicate with radiators, and the left sides of the outer walls of the multiple radiators are fixedly connected with temperature detectors. According to the utility model, air is uniformly distributed into the plurality of branch pipes through the shunting box, the relative balance of the air flow received by each radiator is ensured, the temperature monitor monitors the indoor temperature condition in real time, and transmits the temperature data to the data receiver, the data receiver analyzes and processes the temperature data, and the moving distance of the telescopic rod is controlled. Therefore, the air flow in the branch pipe is accurately adjusted, and the effects of energy conservation and emission reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air supply technology field especially, relates to a fan coil ventilation system. BACKGROUND

[0002] The air supply system is a ventilation system for delivering treated air to a specific space, and its main functions are to provide fresh air, regulate air temperature, humidity and air quality, etc. for indoor environment to meet the comfort and process requirements of personnel.

[0003] Through the search, the patent of China announcement number for: CN214619815U, discloses a kind of air supply system, including fresh air system, including fresh air inlet, surface cooler and fresh air outlet, surface cooler is set between fresh air inlet and fresh air outlet, for the air flow by fresh air inlet to the dehumidification of fresh air outlet;And high-pressure micro fog humidifier, set in the upstream of fresh air inlet, for the air flow by outdoor environment to the humidification of fresh air inlet, based on this, can reduce the influence of outdoor environment on indoor humidity, improve the stability of indoor humidity, but the equipment in actual use process can only be adjusted temperature manually, cannot automatically adapt to the demand change of different areas, cause resource allocation unreasonable, affect system efficiency and indoor environmental quality, thereby increase energy consumption, reduce the practicability of device. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of fan coil ventilation system, to improve the practicability of device in prior art in actual use process can only be adjusted temperature manually, cannot automatically adapt to the demand change of different areas, cause resource allocation unreasonable, affect system efficiency and indoor environmental quality, thereby increase energy consumption, the problem of reducing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of fan coil ventilation system, including fan, the outer wall left side of the fan is communicated with air supply pipe, the middle part of the air supply pipe is communicated with condenser, the left side of the air supply pipe is provided with shunt box, the left end of the air supply pipe is communicated with the shunt box, the outer wall left side of the shunt box is communicated with multiple branch pipes, another end of multiple the branch pipe is all communicated with emanator, the outer wall left side of multiple the emanator is all fixedly connected with temperature detector, the right end top of multiple the branch pipe is all communicated with valve, the top front side of the shunt box is fixedly connected with data receiver, the top right side of the shunt box is fixedly connected with data processor, the inner wall of the valve is slidably connected with valve core, the inner wall top of the valve is fixedly connected with telescopic link, the bottom of the telescopic link is fixedly connected with the valve core, the top of the data processor is fixedly connected with data transmission module, the bottom of the fan is provided with filtering mechanism.

[0006] Through the above technical scheme: after the fan is started, air is delivered to the condenser for cooling treatment, and the air treated by the condenser is evenly distributed to multiple branch pipes through the distribution box, ensuring that the air flow received by each radiator is relatively balanced. The air finally reaches the radiator through the branch pipe and is evenly emitted from the radiator to each area in the protection unit, realizing air supply operation of the entire protection unit. The temperature detector detects the temperature condition in the room in real time and transmits the temperature data to the data receiver. The data receiver is responsible for receiving information from each temperature detector and transmitting it to the data processor for analysis and processing. The air flow is adjusted to achieve precise temperature control, and the corresponding control instruction is generated to control the telescopic rod to extend or retract, changing the opening of the valve, thereby accurately adjusting the air flow in the branch pipe, avoiding unreasonable resource allocation, and achieving the effect of energy saving and emission reduction.

[0007] As a further description of the above technical scheme:

[0008] The filtering mechanism includes a connecting pipe, the connecting pipe is attached to the bottom of the fan, the top of the connecting pipe is fixedly connected with a plurality of clamping blocks, the bottom of the fan is provided with a plurality of clamping grooves, and the clamping blocks are clamped with the corresponding clamping grooves.

[0009] Through the above technical scheme: the multiple clamping blocks on the top of the connecting pipe are accurately clamped with the corresponding clamping grooves on the bottom of the fan, preventing the filtering mechanism from falling off due to vibration during system operation, and facilitating installation and disassembly. The filter screen, filter plate and filter core located in the middle of the inner wall of the connecting pipe form a three-stage progressive high-efficiency filtering system, ensuring that the return air sent into the fan reaches an extremely high cleanliness standard, effectively ensuring the purity and safety of the system air supply, and meeting the application scene demand for air quality requirements.

[0010] As a further description of the above technical scheme:

[0011] The outer wall of the plurality of branch pipes is fixedly connected with a plurality of support rings, and the top of the plurality of support rings is screw-connected with screws.

[0012] Through the above technical scheme: the support ring and the screw screw-connected therewith jointly build a stable support structure, the support ring can more effectively disperse the weight borne by the branch pipe and the stress generated by air flow, and the screw firmly locks the support ring in the preset position, preventing it from sliding or deviating along the axial or radial direction of the branch pipe during system operation.

[0013] As a further description of the above technical scheme:

[0014] The outer wall rear side of the condenser is provided with a heat dissipation opening, and the outer wall rear side of the data processor is provided with a heat dissipation hole.

[0015] Through the above technical scheme, heat is dissipated to the outside through the heat dissipation opening and the heat dissipation hole, so that the heat can be quickly dissipated, and data processing errors, performance degradation or even equipment failure caused by overheating can be avoided.

[0016] As a further description of the above technical scheme:

[0017] The outer wall front and rear side of the fan is fixedly connected with a fixed block, and the middle part of the two fixed blocks is provided with a positioning hole.

[0018] Through the above technical scheme, the fixed block and the middle positioning hole thereof provide convenience and protection for accurate installation and positioning of the fan.

[0019] As a further description of the above technical scheme:

[0020] The inner wall right side of the plurality of branch pipes is fixedly connected with a noise reduction cotton, and the lengths of the plurality of noise reduction cottons are equal.

[0021] Through the above technical scheme, when the fan transports air through the branch pipe, the airflow and the inner wall of the branch pipe interact to generate turbulent noise and vibration noise, and the noise reduction cotton effectively reduces noise propagation through its porous structure and sound-absorbing material properties.

[0022] As a further description of the above technical scheme:

[0023] The outer wall front side of the flow divider is fixedly connected with a controller, and the controller is electrically connected with the fan, the condenser, the diffuser, the temperature detector, the data receiver and the telescopic rod.

[0024] Through the above technical scheme, the controller efficiently and accurately maintains a comfortable temperature environment of the protection unit, improves the system automation, intelligent level and response ability to complex working conditions.

[0025] As a further description of the above technical scheme:

[0026] The outer side of the return air pipe is fixedly connected with a plurality of anti-skid blocks, and the plurality of anti-skid blocks are annularly distributed with the center of the return air pipe as the center.

[0027] Through the above technical scheme, the anti-skid blocks increase the surface friction of the return air pipe, and facilitate the screwing of the return air pipe into the connecting pipe.

[0028] The utility model has the advantages of:

[0029] 1. In the utility model, air is sucked in and transported to the condenser by the fan for cooling treatment, and the air after condensation treatment is evenly distributed to multiple branch pipes through the air distribution box, ensuring that the air flow received by each radiator is relatively balanced, the temperature detector monitors the temperature of the room in real time, and transmits the temperature data to the data receiver for analysis and processing by the processor, controls the moving distance of the telescopic rod, thereby accurately adjusting the air flow in the branch pipe, thereby avoiding unreasonable resource allocation, and achieving the effect of energy saving and emission reduction.

[0030] 2. In the utility model, the multiple clamping blocks at the top of the connecting pipe are precisely clamped with the corresponding clamping grooves at the bottom of the fan, preventing the filter mechanism from falling off due to vibration during system operation, and facilitating installation and disassembly, the filter screen, the filter plate and the filter core located in the middle of the inner wall of the connecting pipe form a three-stage progressive high-efficiency filtration system, ensuring that the return air sent into the fan reaches an extremely high cleanliness standard, effectively guaranteeing the purity and safety of the system air supply, and meeting the application scene demand of strict air quality requirement. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a perspective view of a fan coil ventilation system according to the utility model;

[0032] Figure 2 It is an enlarged view of A of Figure 1

[0033] Figure 3 It is an enlarged view of B of Figure 1

[0034] Figure 4 It is an internal structure schematic view of a valve of a fan coil ventilation system according to the utility model;

[0035] Figure 5 It is a filter mechanism schematic view of a fan coil ventilation system according to the utility model;

[0036] Figure 6 It is a local structure display view of a fan of a fan coil ventilation system according to the utility model;

[0037] Figure 7 It is a local structure schematic view of a fan coil ventilation system according to the utility model.

[0038] LEGEND:

[0039] ​​1, fan; 2, filter mechanism; 201, connecting pipe; 202, clamping block; 203, clamping groove; 204, return air pipe; 205, filter screen; 206, filter plate; 207, filter core; 3, air supply pipe; 4, condenser; 5, flow divider; 6, branch pipe; 7, diffuser; 8, temperature detector; 9, valve; 10, data receiver; 11, data processor; 12, valve core; 13, telescopic rod; 14, data transmission module; 15, support ring; 16, screw; 17, heat dissipation opening; 18, heat dissipation hole; 19, fixing block; 20, positioning hole; 21, noise reduction cotton; 22, controller; 23, anti-skid block. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Referring to Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a fan -coil ventilation system, including fan 1, fan 1 is as system power core and starts operation, its impeller high -speed rotation forms negative pressure area in fan 1, and outside air is inhaled into fan 1 under the pressure difference effect, the outer wall left side of fan 1 is connected with air supply pipe 3, as the passage of air flow, the air that fan 1 inhaled is transmitted to the subsequent part of system smoothly and smoothly, the middle part of air supply pipe 3 is connected with condenser 4, when hot air flows through condenser 4 from air supply pipe 3, according to heat exchange principle, heat is transferred from high temperature air to low temperature heat exchange medium, realizes the reduction of air temperature, the left side of air supply pipe 3 is provided with the shunt box 5, after the shunt box 5 receives the air from air supply pipe 3, the air is equidistributed and balancedly distributed in multiple communicating branch pipes 6, effectively prevent the phenomenon that air supply surplus or deficiency appears in local area in protective unit due to air distribution uneven, the left end of air supply pipe 3 is communicated with the shunt box 5, the outer wall left side of shunt box 5 is connected with multiple branch pipes 6, the air that shunt box 5 distributed is further delivered to each diffuser 7, the other end of multiple branch pipes 6 is all communicated with diffuser 7, and diffuser 7 is the terminal device of air supply system, is responsible for the air that branch pipe 6 delivered is evenly distributed to each area in protective unit, the outer wall left side of multiple diffusers 7 is all fixedly connected with temperature detector 8, and temperature detector 8 monitors indoor temperature in real time, the right end top of multiple branch pipes 6 is all communicated with valve 9, and valve 9 is mainly used for accurately controlling the air flow in branch pipe 6, the top front side of shunt box 5 is fixedly connected with data receiver 10, receives temperature data signal from multiple temperature detectors 8, and after these scattered temperature data are efficiently integrated, transmits to data processor 11 and generates corresponding control instruction, the top right side of shunt box 5 is fixedly connected with data processor 11, the inner wall of valve 9 is slidably connected with valve core 12, the inner wall top of valve 9 is fixedly connected with telescopic link 13, when telescopic link 13 receives control instruction, according to the accurate telescopic of instruction requirement, the bottom of telescopic link 13 is fixedly connected with valve core 12, the top of data processor 11 is fixedly connected with data transmission module 14, and data transmission module 14 is responsible for transmitting the data generated by data processor 11 to remote detection platform, and the bottom of fan 1 is provided with filter mechanism 2, the rear side of the outer wall of condenser 4 is provided with heat dissipation opening 17, and the rear side of the outer wall of data processor 11 is provided with heat dissipation hole 18, when the refrigerant in condenser 4 releases heat in the condensation process, heat is dissipated to the surrounding environment through heat dissipation opening 17, the heat generated by the chip and electronic element inside data processor 11 is conducted to the shell through the fin, and then is dissipated to the outside through heat dissipation hole 18, to ensure that heat can be quickly dissipated, avoid data processing error, performance decline or even equipment failure due to overheating.The inner wall of each of the plurality of branch pipes 6 is fixedly connected with a noise reduction cotton 21, and the plurality of noise reduction cottons 21 have equal lengths. When the fan 1 delivers air through the branch pipes 6, the airflow and the inner wall of the branch pipes 6 interact to generate turbulent noise and vibration noise. The noise reduction cotton 21 effectively reduces noise propagation through its porous structure and sound-absorbing material properties.

[0042] Specifically, after the fan 1 is started, air is sucked in and delivered to the condenser 4 through the air supply pipe 3. The condenser 4 cools the air to reduce the air temperature. The air processed by the condenser 4 continues to enter the air distribution box 5 along the air supply pipe 3. The air distribution box 5 evenly distributes the air to the plurality of branch pipes 6, ensuring that the air flow received by each air diffuser 7 is relatively balanced. Thus, stable air supply can be achieved in different areas of the protection unit, avoiding local air supply shortage or excess. The air finally reaches the air diffusers 7 through the branch pipes 6 and is evenly diffused to each area in the protection unit from the air diffusers 7, achieving air supply operation for the entire protection unit. The plurality of temperature detectors 8 monitor the indoor temperature in real time. The temperature data collected by the temperature detectors 8 is transmitted to the data receiver 10. The data receiver 10 receives information from each temperature detector 8 and transmits it to the data processor 11 for analysis and processing. After receiving the temperature data, the data processor 11 accurately analyzes and calculates the functional requirements, environmental requirements, and overall energy consumption of different areas based on the preset temperature value, determines whether to adjust the air flow to achieve accurate temperature control, and generates corresponding control instructions. The generated control instructions are transmitted to the valves 9 on each branch pipe 6. After receiving the control instructions, the telescopic rod 13 at the top of the inner wall of the valve 9 will extend or retract according to the instructions to change the opening of the valve 9. The data transmission module 14 uploads the data generated during this process to the remote detection platform for further adjustment, thereby accurately adjusting the air flow in the branch pipe 6 and avoiding unreasonable resource allocation to achieve energy saving and emission reduction. When the refrigerant in the condenser 4 releases heat during the condensation process, the heat is dissipated to the surrounding environment through the heat dissipation port 17. The heat generated by the chips and electronic components inside the data processor 11 during operation is conducted to the shell through the heat sink and then dissipated to the outside through the heat dissipation hole 18, ensuring that the heat can be quickly dissipated to avoid data processing errors, performance degradation, or even equipment failure caused by overheating. When the fan 1 delivers air through the branch pipes 6, the airflow and the inner wall of the branch pipes 6 interact to generate turbulent noise and vibration noise. The noise reduction cotton 21 effectively reduces noise propagation through its porous structure and sound-absorbing material properties.

[0043] Reference Figure 1 , Figure 4 and Figure 5The filtering mechanism 2 includes a connecting pipe 201 serving as a key connecting part of the filtering mechanism 2 and the fan 1, the connecting pipe 201 is attached to the bottom of the fan 1, a plurality of clamping blocks 202 are fixedly connected to the top of the connecting pipe 201, a plurality of clamping grooves 203 are formed in the bottom of the fan 1, the plurality of clamping blocks 202 are respectively clamped with the corresponding clamping grooves 203, when the system is running, the filtering mechanism 2 and the fan 1 can be stably connected, effectively resisting the loosening risk caused by the vibration of the fan 1 and the impact of air flow, ensuring the stability of the filtering process, when the filtering components need to be maintained, replaced or overhauled, the connecting pipe 201 can be conveniently pulled out of the clamping grooves 203 of the fan 1 for disassembly, greatly improving the operation convenience and maintenance efficiency, the bottom of the connecting pipe 201 is threadedly connected with an air return pipe 204, the air return pipe 204 is stably connected with the bottom of the connecting pipe 201 through the threaded connection, forming a complete air return channel, a filter screen 205 is fixedly connected to the inner wall of the bottom of the air return pipe 204, the filter screen 205 intercepts impurities with large particle sizes, a filter plate 206 is fixedly connected to the inner wall of the middle of the air return pipe 204, the filter plate 206 adsorbs and filters the tiny particles, odor molecules and part of harmful gases in the air, a filter core 207 is fixedly connected to the inner wall of the middle of the connecting pipe 201, the filter core 207 is the core component of the filtering mechanism 2 and can effectively remove the fine particles in the air, a plurality of anti-skid blocks 23 are fixedly connected to the outer side of the air return pipe 204, the plurality of anti-skid blocks 23 are annularly distributed with the center of the air return pipe 204 as the center, the anti-skid blocks 23 increase the surface roughness of the air return pipe 204, facilitating the rotation of the air return pipe 204.

[0044] Specifically, the plurality of clamping blocks 202 on the top of the connecting pipe 201 are precisely clamped with the corresponding clamping grooves 203 on the bottom of the fan 1, this clamping connection mode not only ensures the stability of the connection, prevents the filtering mechanism 2 from loosening or falling off due to vibration and other factors during system operation, but also facilitates installation and disassembly, the bottom of the connecting pipe 201 is threadedly connected with the air return pipe 204, this connection mode further enhances the stability of the overall structure of the filtering mechanism 2, the filter screen 205 serves as the first filtering barrier and is mainly used for intercepting impurity particles with large particle sizes such as dust, hair and fibers, the filter plate 206 adsorbs and filters the tiny particles, odor molecules and part of harmful gases in the air, the filter core 207 is the core component of the filtering mechanism 2 and can effectively remove the fine particles in the air, including bacteria, viruses, pollen and mold spores, for deep purification of the air, ensuring that the air sent into the protection unit reaches a very high cleanliness standard, the anti-skid blocks 23 increase the surface roughness of the air return pipe 204, facilitating the rotation of the air return pipe 204.

[0045] Referring to Figure 1 , Figure 2 and Figure 6The outer wall of the plurality of branch pipes 6 is fixedly connected with a support ring 15 in the middle, the top of the plurality of support rings 15 is threadedly connected with a screw 16 on the front and rear sides, and the support ring 15 and the screw 16 threadedly connected therewith jointly build a stable support structure of the branch pipe 6; the outer wall of the fan 1 is fixedly connected with a fixed block 19 on the front and rear sides, the middle of the two fixed blocks 19 is provided with a positioning hole 20, and the fixed block 19 and the positioning hole 20 in the middle thereof facilitate accurate installation and positioning of the fan 1; the outer wall of the distribution box 5 is fixedly connected with a controller 22 on the front side, the controller 22 is electrically connected with the fan 1, the condenser 4, the diffuser 7, the temperature detector 8, the data receiver 10 and the telescopic rod 13 respectively, the controller 22 efficiently and accurately maintains a comfortable temperature environment of the protection unit, and improves the automation and intelligent level of the system.

[0046] Specifically, the support ring 15 and the screw 16 threadedly connected therewith jointly build a stable support structure, the support ring 15 can more effectively disperse the weight borne by the branch pipe 6 and the stress generated by air flow, the screw 16 firmly locks the support ring 15 in a preset position, preventing it from sliding or deviating along the axis or radius of the branch pipe 6 during system operation; the fixed block 19 and the positioning hole 20 in the middle thereof facilitate and guarantee accurate installation and positioning of the fan 1; the controller 22 improves the rotating speed of the fan 1, increases the refrigerating capacity of the condenser 4 and optimizes the air volume distribution of the valve 9, efficiently and accurately maintains a comfortable temperature environment of the protection unit, improves the automation, intelligent level and response ability to complex working conditions of the system, ensures that the air supply system always accurately and stably operates according to environmental requirements, greatly improves the user experience and system operation efficiency.

[0047] Working principle: before using the device, first start the fan 1, air is sucked and transported to the condenser 4 through the air supply pipe 3, air is cooled, air after condensation is evenly distributed to multiple branch pipes 6 through the distribution box 5, air flow received by each radiator 7 is relatively balanced, air is evenly distributed to each area in the protection unit through the branch pipe 6, multiple temperature monitors 8 monitor the temperature in the room in real time, and transmit the collected temperature data to the data receiver 10, the data receiver 10 transmits information to the data processor 11 for analysis and processing, the data processor 11 receives temperature data, calculates the functional requirements of different areas according to the preset temperature value and generates corresponding control instructions, the generated control instructions are transmitted to the valve 9 on each branch pipe 6, the telescopic rod 13 on the inner wall top of the valve 9 will be telescopic according to the instruction, the opening of the valve 9 is changed, the data transmission module 14 uploads the data generated in this process to the remote detection platform, so as to make further adjustment, so as to accurately adjust the air flow in the branch pipe 6, so as to avoid unreasonable resource allocation, and achieve the effect of energy saving and emission reduction; and the multiple clamping blocks 202 on the top of the connecting pipe 201 are accurately clamped with the corresponding clamping grooves 203 at the bottom of the fan 1, so as to prevent the filter mechanism 2 from loosening or falling off due to vibration and other factors during system operation, and facilitate installation and disassembly, the bottom of the connecting pipe 201 and the return air pipe 204 are connected by threads, which further enhances the stability of the overall structure of the filter mechanism 2, the filter screen 205 is the first filter barrier, mainly used for intercepting large particle impurities, the filter plate 206 adsorbs and filters small particles, odor molecules and part of harmful gases in the air, the filter core 207 is the core component of the filter mechanism 2, which can effectively remove fine particles in the air, including bacteria, viruses, pollen and mold spores, and deeply purify the air to ensure that the air entering the protection unit reaches a high cleanliness standard.

[0048] Finally, it should be pointed out that: the above only describes preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fan-coil ventilation system comprising a fan (1), characterised in that: The outer wall left side of the fan (1) is communicated with a air supply pipe (3), the middle part of the air supply pipe (3) is communicated with a condenser (4), the left side of the air supply pipe (3) is provided with a flow divider box (5), the left end of the air supply pipe (3) is communicated with the flow divider box (5), the outer wall left side of the flow divider box (5) is communicated with a plurality of branch pipes (6), the other end of a plurality of the branch pipes (6) is communicated with a diffuser (7), the outer wall left side of a plurality of the diffuser (7) is fixedly connected with a temperature detector (8), the right end top of a plurality of the branch pipes (6) is communicated with a valve (9), the top front side of the flow divider box (5) is fixedly connected with a data receiver (10), the top right side of the flow divider box (5) is fixedly connected with a data processor (11), the inner wall of the valve (9) is slidably connected with a valve core (12), the inner wall top of the valve (9) is fixedly connected with a telescopic rod (13), the bottom end of the telescopic rod (13) is fixedly connected with the valve core (12), the top of the data processor (11) is fixedly connected with a data transmission module (14), the bottom of the fan (1) is provided with a filtering mechanism (2).

2. The fan-coil ventilation system according to claim 1, wherein: The filtering mechanism (2) comprises a connecting pipe (201), the connecting pipe (201) is attached to the bottom of the fan (1), a plurality of clamping blocks (202) are fixedly connected to the top of the connecting pipe (201), a plurality of clamping grooves (203) are formed in the bottom of the fan (1), a plurality of the clamping blocks (202) are respectively clamped with corresponding clamping grooves (203), a return air pipe (204) is threadedly connected to the bottom of the connecting pipe (201), a filter screen (205) is fixedly connected to the inner wall bottom of the return air pipe (204), a filter plate (206) is fixedly connected to the inner wall middle part of the return air pipe (204), and a filter core (207) is fixedly connected to the inner wall middle part of the connecting pipe (201).

3. The fan-coil ventilation system according to claim 1, wherein: A plurality of supporting rings (15) are fixedly connected to the outer wall middle part of the branch pipes (6), and screws (16) are threadedly connected to the top front and back sides of the supporting rings (15).

4. The fan-coil ventilation system according to claim 1, wherein: A heat dissipation opening (17) is formed in the rear side of the outer wall of the condenser (4), and a heat dissipation hole (18) is formed in the rear side of the outer wall of the data processor (11).

5. The fan-coil ventilation system according to claim 1, wherein: Fixed blocks (19) are fixedly connected to the front and back sides of the outer wall of the fan (1), and positioning holes (20) are formed in the middle parts of the two fixed blocks (19).

6. The fan-coil ventilation system according to claim 1, wherein: A plurality of noise reduction cottons (21) are fixedly connected to the right sides of the inner walls of the branch pipes (6), and the lengths of the plurality of noise reduction cottons (21) are equal.

7. The fan-coil ventilation system according to claim 1, wherein: A controller (22) is fixedly connected to the front side of the outer wall of the flow divider box (5), and the controller (22) is electrically connected with the fan (1), the condenser (4), the diffuser (7), the temperature detector (8), the data receiver (10), the telescopic rod (13).

8. The fan-coil ventilation system according to claim 2, wherein: A plurality of anti-skid blocks (23) are fixedly connected to the outer side of the return air pipe (204), and the plurality of anti-skid blocks (23) are annularly distributed with the center of the return air pipe (204) as the center.

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