A vertical low-noise fan-coil applied to terminal air conditioning system

Abstract

The utility model relates to air treatment technical field discloses a kind of vertical low-noise fan-coil applied to terminal air conditioning system, including evaporator, condensate pan, low-noise duct fan, volute type flow guide cavity, evaporator is made of red copper tube bundle with copper fin, refrigerant water refrigeration or hot water, steam heating can be circulated in it, red copper tube bundle with copper fin can make it fully contact with air, evaporator bottom is provided with condensate pan, condensate pan is set in the evaporator directly below avoiding air suction passage, the shape of volute type flow guide cavity is set on evaporator outside surface, sound-absorbing heat-insulating cotton is laid in volute type flow guide cavity. Device adopts volute type flow guide cavity and can be regarded as a large air inlet, so that the exchange area of evaporator and air is greatly increased, its exchange efficiency is also greatly improved, at the same time, the size and weight of evaporator tube bundle can be greatly reduced, and the production cost of equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air treatment, and in particular to a vertical low-noise fan coil unit used in terminal air conditioning systems. Background Technology

[0002] Currently used horizontal fan coil units consist of a conventional evaporator, cooling coil, electric heating element, centrifugal fan, and condensate pan. Their working principle involves a centrifugal fan drawing in indoor air, which exchanges heat with the evaporator to reach the required temperature before being returned to the room. The technology relies on the high head of the centrifugal fan to force convection heat exchange between the air and the evaporator. However, this traditional fan coil unit suffers from several drawbacks. The centrifugal fan is noisy, has high air velocity, and rapid airflow, posing significant safety risks to the comfort of the serviced area. Insufficient contact between the air and the evaporator results in poor temperature exchange, high energy consumption, and is not environmentally friendly or energy-efficient. Furthermore, the conventional terminal unit is too large and heavy, which is detrimental to the control of the ship's center of gravity. The bottom condensate pan is small and shallow, making condensate prone to overflow. The high-speed impeller of the internal centrifugal fan poses a risk of friction and collision with the unit body, creating a high-risk hazard for the entire unit.

[0003] Patent application CN203704146U discloses a heat and humidity treatment device, particularly a fan coil unit, which includes a centrifugal fan and a microchannel evaporator, as well as a finned electric heating tube, a steam spray bar, and an electrode humidifier. With the wind direction as a reference, the centrifugal fan, the microchannel evaporator, the finned electric heating tube, and the steam spray bar are arranged in sequence, and the electrode humidifier is connected to the steam spray bar.

[0004] The existing technology device is noisy, has high wind speed, fast air circulation, low comfort, poor temperature exchange effect, high energy consumption, and is not environmentally friendly or energy-saving.

[0005] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a novel vertical low-noise fan coil unit for use in terminal air conditioning systems. This novel vertical fan coil unit has a novel structure, high heat exchange efficiency, and low noise. It can not only meet the personalized needs of end users and greatly improve the comfort of people in the cabin, but also significantly reduce the size and weight of the fan coil unit, optimize the installation space, and reduce the manufacturing and installation costs.

[0007] The technical solution adopted in this utility model is: A vertical low-noise fan coil unit for use in terminal air conditioning systems includes an evaporator, a condensate pan, a low-noise duct fan, and a volute-type airflow chamber. The evaporator is composed of a bundle of copper tubes with copper fins, through which chilled water for cooling or hot water / steam for heating can circulate. The copper fins allow the copper tube bundle to have full contact with the air. A condensate pan is located at the bottom of the evaporator, positioned directly below the evaporator away from the air intake channel. A volute-type airflow chamber is provided on the outer side of the evaporator, and sound-absorbing and heat-insulating cotton is laid inside the volute-type airflow chamber. An air supply channel is provided above the side of the volute-type airflow chamber facing the evaporator, and the upper part is connected to the low-noise duct fan.

[0008] By adopting the above structure, the structure is novel and the heat exchange efficiency is high, which greatly improves the comfort of the cabin space and can also significantly reduce the size and weight of the fan coil unit, optimize the installation space, and reduce the manufacturing and installation costs.

[0009] Preferably, the bottom of the volute-type air guide cavity is provided with a return air inlet, and the top of the terminal air conditioning system is provided with a fresh air inlet. The return air inlet and the volute-type air guide cavity are connected as a whole, so that a sufficient amount of fresh air from the fresh air inlet can be mixed with the air from the return air inlet, effectively controlling the wind speed, reducing wind resistance, reducing noise, and saving energy.

[0010] Preferably, a volute-type air guide cavity and a low-noise duct fan 4 are provided on one side of the evaporator, which can make the internal air flow smooth, reduce wind speed, reduce wind resistance, effectively control terminal noise, reduce background noise of the service area, and greatly reduce energy consumption. The low-noise duct fan is equipped with a built-in rotor motor, which effectively reduces noise, greatly reduces energy consumption, and saves operating costs.

[0011] Preferably, the entire interior of the terminal air conditioning system is lined with sound and heat insulation cotton, which can effectively control the noise of the terminal device and improve the comfort of personnel in the service area. Preferably, the evaporator is equipped with a flow regulating valve, which can effectively control the flow rate of the medium flowing through the copper tube bundle with copper fins, effectively control the load, and avoid energy waste.

[0012] Preferably, the bottom of the condensate pan is equipped with a condensate drain outlet, which can collect, process and recycle the condensate from the end device.

[0013] Preferably, the side of the terminal air conditioning system is provided with a medium carrier inlet for chilled water cooling or hot water / steam heating and a medium carrier outlet to facilitate the connection of the user's energy medium load.

[0014] Compared with the prior art, this utility model has the following advantages: 1. The device of this utility model adopts a volute-type flow guide cavity, which can be regarded as a large air inlet, which greatly increases the exchange area between the evaporator and the air, and the exchange efficiency is also greatly improved. At the same time, it can significantly reduce the size and weight of the evaporator tube bundle, and reduce the production cost of the equipment.

[0015] 2. This utility model device uses a low-noise duct fan + volute-type guide air duct instead of the centrifugal fan of the traditional fan coil unit. The impeller of the duct fan is made of high-strength flame-retardant plastic material, which avoids the risk of collision with the shell after the impeller is damaged. At the same time, its airflow speed output is stable, the equipment operates with low noise, and the overall comfort and safety are more reliable.

[0016] 3. This utility model device uses a built-in low-noise duct fan to replace the post-centrifugal fan of the traditional fan coil unit. Compared with the traditional fan coil unit, the size and weight are greatly reduced, saving installation space. It can be installed as a whole in the triangular area of ​​the sanitary unit, which is also convenient for maintenance and repair.

[0017] 4. The ventilation terminal of this utility model features a built-in low-noise duct fan with an internal rotor motor. This not only solves the problems of energy consumption and low efficiency of conventional motors, but also significantly reduces equipment production and maintenance costs, saving operating costs for the user from the source. The terminal air volume can be infinitely adjusted via an external frequency converter, demonstrating good practical value and economic benefits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 2 This is a front view of the present invention.

[0020] Figure 3 This is a side view of the present invention.

[0021] Figure 4 This is a perspective view of the present invention.

[0022] The components include: 1. Evaporator; 2. Medium carrier inlet; 3. Condensate tray; 4. Low-noise duct fan; 5. Volute-type flow guide cavity; 6. Built-in rotor motor; 7. Medium carrier outlet; 8. Air outlet; 9. Return air outlet; 10. Condensate drain outlet; 11. Flow regulating valve; 12. Sound and heat insulation cotton layer; 13. Fresh air inlet. Detailed Implementation

[0023] like Figure 1-4As shown, a vertical low-noise fan coil unit for use in a terminal air conditioning system includes an evaporator 1, a condensate tray 3, a low-noise duct fan 4, and a volute-type airflow guide cavity 5. The evaporator 1 is characterized by being composed of a bundle of copper tubes with copper fins, through which refrigerant water can circulate for cooling or hot water / steam heating. The copper fins allow for full contact with air. A condensate tray 3 is located at the bottom of the evaporator 1, positioned directly below it, avoiding the air intake channel. A volute-type airflow guide cavity 5 is located on the outer side of the evaporator 1, with sound-absorbing and heat-insulating cotton laid inside. An air supply channel is located above the side of the volute-type airflow guide cavity 5 facing the evaporator 1, and its upper part connects to the low-noise duct fan 4.

[0024] The bottom of the volute-type air guide cavity 5 is provided with a return air inlet 9, and the top of the terminal air conditioning system is provided with a fresh air inlet 13. The return air inlet 9 is connected to the volute-type air guide cavity 5, which can bring in a sufficient amount of fresh air from the fresh air inlet 13 and air from the return air inlet 9 to mix, effectively control wind speed, reduce wind resistance, reduce noise, and save energy.

[0025] The evaporator 1 is equipped with a volute-type airflow guide chamber 5 and a low-noise duct fan 4 on one side, which can ensure smooth internal airflow, reduce wind speed and resistance, effectively control terminal noise, reduce background noise in the service area, and significantly reduce energy consumption. The low-noise duct fan 4 is equipped with a built-in rotor motor 6, which effectively reduces noise, significantly reduces energy consumption, saves operating costs, and significantly reduces background noise in the service area.

[0026] The entire interior of the terminal air conditioning system is lined with sound and heat insulation cotton (12mm), which can effectively control the noise of the terminal device and improve the comfort of personnel in the service area. The tube bundle on one side of evaporator 1 is equipped with an inlet and an outlet. A flow regulating valve 11 is installed at the inlet to effectively control the flow rate of the medium passing through the copper tube bundle with copper fins, effectively controlling the load and avoiding energy waste. The cooling or heating of the medium carrier in the tube bundle of evaporator 1 uses a set of coiled tube bundles, effectively reducing the number of coils, which not only reduces the size and weight of the equipment, but also greatly reduces the production and manufacturing costs of the equipment.

[0027] The bottom of the condensate pan 3 is equipped with a condensate drain outlet 10, which can collect, process and recycle the condensate from the end device.

[0028] The side of the terminal air conditioning system is equipped with a refrigerant water cooling or hot water / steam heating medium carrier inlet 2 and a medium carrier outlet 7, facilitating the connection of the user's energy medium load. This device can be installed in the rear triangular area of ​​the sanitary unit, effectively saving compartment space. Its placement in this area allows it to share the same access door with the sanitary unit, facilitating future equipment maintenance and repair.

[0029] When this device is in use, upon receiving a command from the service location, the built-in rotor motor 6 in the low-noise duct fan 4 starts working after receiving an electrical signal. Indoor air flows through the low-noise duct fan 4, creating a negative pressure zone within the volute-type air guide cavity 5. This draws in air from the return air inlet 9, which mixes with the fresh air inlet 13 from the central air conditioner. This allows the air in the service location to flow smoothly over the evaporator 1, ensuring sufficient contact and energy exchange between the air and the evaporator 1, thereby achieving the purpose of controlling room temperature. The condensate produced during equipment operation is discharged through the condensate drain outlet 10 at the bottom of the evaporator and can be collected and reused. This utility model features a novel structure, high heat exchange efficiency, low background noise, and requires no maintenance. It not only meets the personalized needs of the end user but also significantly reduces the size and weight of the fan coil unit, lowering equipment manufacturing and installation costs, thus possessing excellent practical value and economic benefits.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should be included within the scope of protection defined by the claims of the present utility model.

Claims

1. A vertical low-noise fan coil unit for use in a terminal air conditioning system, comprising an evaporator, a condensate pan, a low-noise duct fan, and a volute-type flow guide cavity, characterized in that: The evaporator is composed of a bundle of copper tubes with copper fins, through which chilled water can be circulated for cooling or hot water and steam can be circulated for heating. The copper fins of the copper tubes allow for full contact with the air. A condensate tray is installed at the bottom of the evaporator, positioned directly below the evaporator away from the air intake channel. A volute-shaped flow guide cavity is provided on the outer side of the evaporator, and sound-absorbing and heat-insulating cotton is laid inside the volute-shaped flow guide cavity. An air supply channel is provided above the side of the volute-shaped flow guide cavity facing the evaporator, and the upper part is connected to a low-noise duct fan.

2. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The bottom of the volute-type air guide cavity is provided with a return air inlet, and the top of the terminal air conditioning system is provided with a fresh air inlet. The return air inlet is connected to the volute-type air guide cavity as a whole, which can bring in a sufficient amount of fresh air from the fresh air inlet and air from the return air inlet to mix together, effectively controlling wind speed, reducing wind resistance, reducing noise, and saving energy.

3. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The evaporator is equipped with a volute-type air guide cavity and a low-noise duct fan on one side, which can make the internal air flow smooth, reduce wind speed, reduce wind resistance, effectively control terminal noise, reduce background noise in the service area, and greatly reduce energy consumption. The low-noise duct fan is equipped with a built-in rotor motor, which effectively reduces noise, greatly reduces energy consumption, and saves operating costs.

4. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The entire interior of the terminal air conditioning system is lined with sound and heat insulation cotton, which can effectively control the noise of the terminal device and improve the comfort of personnel in the service area.

5. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The evaporator is equipped with a flow regulating valve, which can effectively control the flow rate of the medium flowing through the copper tube bundle with copper fins, effectively control the load, and avoid energy waste.

6. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The bottom of the condensate pan is equipped with a condensate drain outlet, which can collect, process, and reuse the condensate from the end device.

7. A vertical low-noise fan coil unit for use in a terminal air conditioning system according to claim 1, characterized in that: The side of the terminal air conditioning system is provided with a medium carrier inlet for chilled water cooling or hot water / steam heating and a medium carrier outlet for easy connection of the user's energy medium load.

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