A micro fan coil suitable for small boats
By designing a miniature fan coil unit suitable for small boats, and adopting a cross-flow fan and a multi-row through-hole structure, the problem of excessive height of fan coil units in small boats is solved, achieving uniform air delivery and space saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHOULI ENERGY SAVING EQUIP CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-07
AI Technical Summary
Existing marine air conditioning systems in small vessels suffer from excessively high fan coil units, leading to reduced cabin height and hindering crew movement. Furthermore, traditional centrifugal fans deliver air unevenly and occupy a large amount of space.
Designed for small boats, the miniature fan coil unit features a cross-flow fan and a multi-row perforated structure, combined with a water collection tray to reduce height and deliver air evenly. The water collection tray design does not take up extra space.
It enables the increase of cabin height in small vessels, preventing crew members from bumping their heads, and provides even airflow while saving cabin space.
Smart Images

Figure CN224470341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine equipment technology, specifically to a miniature fan coil unit suitable for small vessels. Background Technology
[0002] As people's living standards improve, the requirements for the comfort of the cabin environment of various ships, especially the cabin environment of cruise ships, are getting higher and higher. Therefore, air conditioning is an essential piece of equipment in ships. With the continuous development of the shipbuilding industry and the continuous application of high technology, the demand for air conditioning is also developing towards high quality, comfort and diversification.
[0003] However, existing marine air conditioning systems have certain drawbacks when applied to smaller vessels. Specifically, small boats typically under 20 meters in length have a cabin height of 2 to 2.2 meters. The fan coil units used in existing marine air conditioning systems are generally 240 to 300 millimeters high. Installing fan coil units at this height would result in a very low cabin height, making it easy for crew members to bump their heads while walking inside. Furthermore, traditional fans generally use centrifugal fans, which deliver a large volume of air locally through a large vortex casing. The increased size of the fan coil unit due to the larger ductwork further compresses the cabin space, thus limiting the capabilities of existing technology. Utility Model Content
[0004] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a miniature fan coil unit suitable for small boats.
[0005] This invention provides a miniature fan coil unit suitable for small boats, characterized by comprising: a shell, a heat exchanger, a fan, and a water collection tray.
[0006] The shell is rectangular and includes a heat exchanger shell and a fan shell. The heat exchanger shell consists of two side plates, and a top plate, bottom plate, front plate, and rear plate located on the two side plates (top, bottom, front, and rear). Multiple rows of through holes are provided on both the front and rear plates, and the through holes on the front and rear plates are arranged correspondingly. A rectangular air inlet is provided on one side plate. The fan shell consists of at least three mounting plates forming a U-shaped cover. The fan shell is mounted on the heat exchanger shell, and the opening of the fan shell faces the air inlet on one side plate of the heat exchanger shell.
[0007] The heat exchanger is located inside the heat exchanger shell and has multiple refrigerant flow channels. The two ends of each refrigerant flow channel are connected to two corresponding through holes on the front and rear plates, respectively.
[0008] The fan is housed inside the fan casing. An air guide bag is installed at the fan outlet, with the other end of the air guide bag located inside the air collection port. The fan inlet faces the front or rear of the fan casing.
[0009] The water collection tray is located below the heat exchanger shell and is used to collect dripping condensate. Drainage connectors are provided on both sides of the water collection tray.
[0010] The miniature fan coil unit for small boats provided by this utility model also has the following feature: the fan is a cross-flow fan.
[0011] The miniature fan coil unit for small boats provided by this utility model also has the following feature: the number of through holes in each row is at least 4.
[0012] The miniature fan coil unit for small boats provided by this utility model also has the following feature: the height of the water collection tray wall is 30mm.
[0013] The miniature fan coil unit for small boats provided by this utility model also has the following feature: the water collection tray is provided with a water guide strip, and the two ends of the water guide strip are respectively set with two drainage joints.
[0014] Functions and effects of utility models
[0015] According to the miniature fan coil unit applicable to small boats disclosed in this utility model, because the heat exchanger shell has multiple rows of through holes communicating with the refrigerant flow channel, and each row has at least four through holes, the height of the fan coil unit can be reduced, thereby achieving a higher ceiling height when the utility model is installed in the cabin of a small boat. Furthermore, because the fan is a cross-flow fan, it can deliver air evenly, and the fan duct is smaller, thus further reducing the overall height of the utility model. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a structural schematic diagram of the present invention from another perspective;
[0018] Figure 3 This is a schematic diagram of the structure of the heat exchanger shell and the water collection plate in this utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the heat exchanger shell in this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 10. Heat exchanger shell; 11. Side plate; 12. Top plate; 13. Bottom plate; 14. Front plate; 15. Rear plate; 16. Through hole; 17. Air inlet; 20. Fan shell; 21. Mounting plate; 22. Grid; 23. Baffle; 30. Heat exchanger; 31. Refrigerant flow channel; 40. Fan; 50. Water collection tray; 60. Water guide strip. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments are described in detail with reference to the accompanying drawings.
[0023] Example
[0024] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a structural schematic diagram of the present invention from another perspective. Figure 3 This is a schematic diagram of the structure of the heat exchanger shell and water collection plate in this utility model. Figure 4 This is a schematic diagram of the internal structure of the heat exchanger shell in this utility model.
[0025] like Figures 1 to 4 As shown, this embodiment provides a miniature fan coil unit suitable for small boats, including: a shell, a heat exchanger 30, a fan 40, and a water collection tray 50. The shell is rectangular and includes a heat exchanger shell 10 and a fan shell 20.
[0026] like Figures 1 to 4 As shown, the heat exchanger shell 10 consists of two side plates 11, and a top plate 12, a bottom plate 13, a front plate 14, and a rear plate 15 disposed on the upper, lower, front, and rear sides of the two side plates 11. Multiple rows of through holes 16 are provided on both the front plate 14 and the rear plate 15, and the through holes 16 on the front plate 14 and the rear plate 15 are correspondingly arranged. A rectangular air collection port 17 is provided on one side plate 11.
[0027] In this embodiment, the number of through holes 16 in each row is at least 4, that is, the heat exchanger 30 has at least 4 refrigerant channels 31 in each row, so that the heat exchange capacity remains unchanged while reducing the height of the fan 40 coil, thereby ensuring the practicality of this utility model.
[0028] like Figure 1 and Figure 2 As shown, the fan housing 20 is composed of at least three mounting plates 21 forming a U-shaped cover. The fan housing 20 is mounted on the heat exchanger housing 10, and the opening of the fan housing 20 faces the air collection port 17 on one side plate 11 of the heat exchanger housing 10. Thus, the heat exchange efficiency of the fan 40 and the heat exchanger 30 can be maximized through the air collection port 17.
[0029] In this embodiment, the fan housing 20 may also have a grid 22 and a baffle 23, with the grid 22 and baffle 23 respectively located at the front and rear of the fan housing 20. This allows the fan housing 20 to provide comprehensive protection for the fan 40, ensuring the stable operation of the fan 40.
[0030] like Figures 1 to 4 As shown, the heat exchanger 30 is located inside the heat exchanger shell 10. The heat exchanger 30 has multiple refrigerant channels 31, and the two ends of each refrigerant channel 31 are connected to two corresponding through holes 16 on the front plate 14 and the rear plate 15, respectively.
[0031] like Figure 1 and Figure 2 As shown, the fan 40 is located inside the fan housing 20. An air guide bag is provided at the air outlet of the fan 40, with the other end of the air guide bag located inside the air collection port 17. The air inlet of the fan 40 faces the front or rear of the fan housing 20. Specifically, the air inlet of the fan 40 is positioned facing the grid 22.
[0032] In this embodiment, the fan 40 is preferably a cross-flow fan. This allows the present invention to deliver air evenly throughout during use, and also makes the fan duct of the fan 40 smaller, resulting in a smaller overall height of the present invention.
[0033] like Figures 1 to 4 As shown, the water collection tray 50 is located below the heat exchanger shell 10 and is used to collect dripping condensate. Both ends of the water collection tray 50 are equipped with drain connectors. In use, the water collection tray 50 is connected to the drain pipe through the drain connectors on both ends, thereby allowing the condensate in the water collection tray 50 to be discharged.
[0034] In this embodiment, the height of the water collection tray 50 is preferably 30mm. This satisfies the function of collecting dripping condensate without occupying too much space in the cabin, thus allowing the cabin to have a higher ceiling after the installation of this invention.
[0035] In this embodiment, a water guide strip 60 is provided inside the water collection tray 50, with each end of the water guide strip 60 corresponding to two drain connectors. This allows the water in the water collection tray 50 to be guided during use, flowing through the drain pipe to the outside of the vessel.
[0036] In use, because the through holes 16 on the heat exchanger shell 10 are mainly arranged horizontally, combined with the refrigerant flow channels 31 arranged horizontally in the heat exchanger 30, the height of the miniature fan coil unit of this invention is much lower than that of existing fan coil units. Simultaneously, because the fan 40 is preferably a cross-flow fan, it can deliver air evenly while reducing the size of the air duct, thus also reducing the overall height of this invention. Therefore, after installing this invention, the cabin ceiling height will not become very low, thereby preventing crew members from bumping their heads while walking inside the cabin. When this invention processes air, the refrigerant flowing from the air conditioning unit enters the refrigerant flow channel inside the heat exchanger 30 and undergoes sufficient heat exchange with the indoor air drawn in by the fan 40, thereby achieving the purpose of cooling or heating the air. After the refrigerant temperature rises or falls after heat exchange, it flows out of the heat exchanger 30 and enters the air conditioning unit again for further cooling or heating. This process is repeated to achieve the purpose of air processing.
[0037] The role and effect of the embodiments
[0038] According to the miniature fan coil unit applicable to small boats disclosed in this utility model, because the heat exchanger shell has multiple rows of through holes communicating with the refrigerant flow channel, and each row has at least four through holes, the height of the fan coil unit can be reduced, thereby achieving a higher ceiling height when the utility model is installed in the cabin of a small boat. Furthermore, because the fan is a cross-flow fan, it can deliver air evenly, and the fan duct is smaller, thus further reducing the overall height of the utility model.
[0039] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model.
Claims
1. A miniature fan coil unit suitable for small boats, characterized in that, include: Shell, heat exchanger, fan, and water collection tray, The shell is rectangular in shape and includes a heat exchanger shell and a fan shell. The heat exchanger shell consists of two side plates and a top plate, bottom plate, front plate, and rear plate located on the two side plates (top, bottom, front, and rear). Multiple rows of through holes are provided on both the front and rear plates, with the through holes on the front and rear plates corresponding to each other. A rectangular air inlet is provided on one of the side plates. The fan shell consists of at least three mounting plates forming a U-shaped cover. The fan shell is mounted on the heat exchanger shell, and its opening faces the air inlet on one side plate of the heat exchanger shell. The heat exchanger is disposed within the heat exchanger housing and has multiple refrigerant flow channels. Each refrigerant flow channel has two ports that are respectively connected to two through holes provided on the front plate and the rear plate. The fan is housed within the fan casing. An air guide bag is provided at the fan outlet, with the other end of the air guide bag located inside the air collection port. The fan inlet faces either the front or rear of the fan casing. The water collection tray is located below the heat exchanger shell and is used to collect dripping condensate. Both ends of the water collection tray are provided with drain connectors.
2. The miniature fan coil unit suitable for small boats according to claim 1, characterized in that: in, The fan is a cross-flow fan.
3. The miniature fan coil unit suitable for small boats according to claim 1, characterized in that: in, The number of through holes in each row is at least 4.
4. The miniature fan coil unit suitable for small boats according to claim 1, characterized in that: in, The height of the water collection tray is 30mm.
5. The miniature fan coil unit suitable for small boats according to claim 1, characterized in that: in, The water collection tray is equipped with a water guide strip, and the two ends of the water guide strip are respectively set to correspond to the two drainage joints.