Fan-coil unit for ventilation equipment

Abstract

The utility model relates to ventilation equipment technical field discloses a fan coil for ventilation equipment, include: set up and realize the dismounting mechanism of sliding fit and bolt locking, are used for the quick barehanded dismounting of filter plate, and set up by spring, telescopic link and sealing strip constitute the self -adaptation mechanism, utilize the thrust of spring to make sealing strip always elastic abutment filter plate, has guaranteed the air tightness when equipment operation, and through telescopic buffer reduces the wear and tear of sealing strip in the dismounting process. The utility model structure is ingenious, and the maintenance of filter plate becomes simple and fast barehanded operation, and simultaneously through reliable and durable dynamic sealing structure, effectively prevent air short circuit, improve the efficiency and stability of equipment long -term operation, prolong the service life of sealing element.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and in particular to a fan coil unit for ventilation equipment. Background Technology

[0002] Fan coil units, widely used terminal equipment in central air conditioning systems, function by forcing air through the coils for heat exchange via a fan, while simultaneously purifying the air through filters to provide clean, temperature-controlled air to the room. To ensure indoor air quality and maintain efficient equipment operation, the filters installed on the units must be cleaned or replaced regularly.

[0003] In existing technologies, filters are typically fixed to the housing using screws or other fasteners. When filter maintenance is required, maintenance personnel must use tools such as screwdrivers to unscrew multiple screws one by one to remove the filter. This process is not only cumbersome and time-consuming, but also extremely inconvenient in environments with narrow installation spaces or high-altitude operations, making it easy for screws to be lost, further increasing the difficulty and time cost of maintenance.

[0004] Furthermore, to prevent air from "short-circuiting" directly through the filter's edge gaps without passing through the filter, a sealing strip is usually installed between the filter's frame and the housing. However, traditional sealing strips are mostly fixed designs. During repeated removal and installation of the filter, their surface experiences continuous hard friction with the filter's frame, causing the sealing strip to wear out, age, and even break quickly. Once the sealing performance of the sealing strip deteriorates, air leakage occurs. This not only reduces the air filtration effect but also affects heat exchange efficiency, leading to a decline in the overall performance of the equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fan coil unit for ventilation equipment, which aims to improve the problems of cumbersome and laborious disassembly and assembly of filter plates and the easy decline in sealing performance of the sealing structure due to friction and wear.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fan coil unit for ventilation equipment, comprising a casing, a fan wheel, a water inlet, a water outlet, and a filter plate.

[0007] The inner wall of the housing is equipped with guide rails, while the side wall of the filter plate is provided with sliding grooves. The housing is also equipped with positioning blocks, and the filter plate is equipped with pins. In addition, the inner wall of the housing is equipped with a telescopic rod, which is fitted with a spring and has a sealing strip connected to its free end.

[0008] Furthermore, the filter plate slides with the guide rail on the housing via its groove; the pin engages with the positioning block to lock the filter plate; and the spring causes the sealing strip to elastically abut against the filter plate.

[0009] Preferably, the positioning block has a through hole for the pin to pass through the filter plate and be inserted.

[0010] Preferably, the pin can be locked by rotation after being inserted into the through hole of the positioning block.

[0011] Preferably, the filter plate is further provided with a limiting post that abuts against the positioning block when installed in place.

[0012] Preferably, one end of the spring abuts against the telescopic rod, and the other end abuts against the housing.

[0013] Preferably, the sealing strip is arranged in the same direction as the sliding direction of the filter plate.

[0014] Preferably, a junction box is provided on the outside of the housing.

[0015] Preferably, the housing is also provided with an air guide plate located at the air outlet.

[0016] Preferably, the guide rail, slide groove, positioning block, pin, and limiting post together constitute the disassembly and assembly mechanism.

[0017] Preferably, the telescopic rod, sealing strip, and spring together constitute an adaptive mechanism.

[0018] This utility model has the following beneficial effects: In this utility model, by setting up a disassembly and assembly mechanism consisting of guide rails, slides, positioning blocks and pins, the technical problem that the filter plates in the prior art are mostly fixed with screws, and the disassembly and assembly process is cumbersome, laborious and requires the use of tools is solved. This achieves the effect of simplifying the maintenance process and realizing quick manual disassembly and assembly of the filter plates.

[0019] In this invention, an adaptive mechanism consisting of a sealing strip, a telescopic rod, and a spring is used to ensure that the sealing strip is always tightly attached to the filter plate by utilizing the continuous elastic force of the spring. This solves the problem that some air leaks directly without filtration and heat exchange due to poor sealing, thereby reducing the operating efficiency of the equipment. It achieves the effect of ensuring that the filter plate and the housing are always tightly attached, preventing air short circuits, and thus ensuring the long-term efficient operation of the equipment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a fan coil unit for ventilation equipment proposed in this utility model; Figure 2This is a schematic diagram of the filter plate structure of a fan coil unit for ventilation equipment proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the junction box structure of a fan coil unit for ventilation equipment proposed in this utility model; Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0021] Legend: 1. Housing; 2. Junction box; 3. Outlet; 4. Inlet; 5. Fan wheel; 6. Air guide plate; 7. Filter plate; 8. Disassembly and assembly mechanism; 801. Limiting post; 802. Positioning block; 803. Pin; 804. Slide groove; 805. Guide rail; 9. Adaptive mechanism; 901. Sealing strip; 902. Telescopic rod; 903. Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 This utility model provides a fan coil unit for ventilation equipment, which aims to solve the problems of inconvenient disassembly and maintenance of filter plates and easy wear of sealing structure leading to decreased sealing performance in the prior art.

[0024] like Figure 1 As shown, the fan coil unit of the ventilation equipment includes a housing 1, a junction box 2 fixedly connected to the outside of the housing 1, a water outlet 3 and a water inlet 4 provided on the housing 1, a fan wheel 5 rotatably connected inside the housing 1, an air guide plate 6 provided at the air outlet of the housing 1, and a filter plate 7 detachably installed on the housing 1. Specifically, refer to Figure 2 and Figure 3A guide rail 805 is fixedly connected to the inner wall of the housing 1, and a corresponding sliding groove 804 is provided on the side wall of the filter plate 7. The filter plate 7 is slidably connected to the guide rail 805 on the housing 1 through its sliding groove 804, which is used to guide the smooth installation or removal of the filter plate 7. A positioning block 802 is also fixedly connected to the housing 1. The positioning block 802 has a through hole for the insertion of a pin 803. The filter plate 7 is provided with a pin 803. The pin 803 passes through the plate body of the filter plate 7 and can be inserted into the through hole of the positioning block 802. After the pin 803 is fully inserted, it can be locked onto the positioning block 802 by rotating the pin 803, thereby firmly fixing the filter plate 7 inside the housing 1. The filter plate 7 is also fixedly connected to the limiting post 801. When the filter plate 7 is slidably installed to the predetermined position along the guide rail 805, the end face of the limiting post 801 abuts against the positioning block 802, which plays the role of precise positioning and preventing excessive pushing. The guide rail 805, the slide 804, the positioning block 802, the pin 803 and the limiting post 801 together constitute the disassembly and assembly mechanism 8. Reference Figure 4 and Figure 5 To achieve a reliable seal, an adaptive mechanism 9 is provided on the inner wall of the housing 1. This adaptive mechanism 9 includes a telescopic rod 902, a spring 903, and a sealing strip 901. The telescopic rod 902 is telescopically installed inside the housing 1, and the spring 903 is sleeved on the outside of the telescopic rod 902. One end of the spring 903 abuts against the telescopic rod 902, and the other end abuts against the inner wall of the housing 1. The sealing strip 901 is fixedly connected to the free end of the telescopic rod 902. Under the continuous thrust generated by the spring 903, the telescopic rod 902 drives the sealing strip 901 to always elastically abut against the side wall of the filter plate 7, forming a dynamic seal. The arrangement direction of the sealing strip 901 is consistent with the sliding installation direction of the filter plate 7, ensuring that the sealing strip 901 can adaptively fit with the extension and retraction of the telescopic rod 902 during the movement of the filter plate 7. The aforementioned telescopic rod 902, sealing strip 901, and spring 903 together constitute the adaptive mechanism 9.

[0025] Reference Figure 3 In order to achieve reliable locking, the positioning block 802 is provided with a through hole. After passing through the filter plate 7, the pin 803 can be inserted into the through hole of the positioning block 802. After being inserted into the through hole, the pin 803 can be rotated at a certain angle to lock onto the positioning block 802, thereby preventing it from accidentally coming out.

[0026] Reference Figure 2 In order to achieve precise positioning during installation, a limiting post 801 is fixedly connected to the filter plate 7. When the filter plate 7 slides along the guide rail 805 to the final position, the front end of the limiting post 801 abuts against the side of the positioning block 802 to form a rigid physical limit.

[0027] Reference Figure 5 To achieve a stable and durable elastic seal, one end of the spring 903 abuts against the integral flange on the telescopic rod 902, while the other end of the spring 903 abuts against the inner wall of the housing 1, thereby applying a continuous outward pushing force to the telescopic rod 902. At the same time, the length direction of the sealing strip 901 is consistent with the sliding direction of the filter plate 7 to ensure that the sealing strip 901 can effectively fit during the entire installation and disassembly stroke of the filter plate 7.

[0028] A junction box 2 is fixedly connected to the outside of the casing 1 for connecting external power supply and control signals. An air guide plate 6 is also fixedly connected to the air outlet of the casing 1 for guiding the temperature-controlled and filtered air into the room.

[0029] Working principle: When the fan coil unit of the ventilation equipment is working, after the power is connected through the junction box 2, the fan wheel 5 rotates and draws outdoor air into the casing 1. The air first flows through the filter plate 7, where dust and impurities are effectively filtered. At the same time, cold or hot water enters the coil inside the casing 1 from the water inlet 4 for heat exchange, cooling or heating the flowing air. The water that has completed the heat exchange is then discharged from the water outlet 3. The clean air after filtration and temperature adjustment is finally guided into the room by the air guide plate 6. When cleaning and maintenance of the clogged filter plate 7 is required, the operator first rotates and pulls out the pin 803 to disengage it from the positioning block 802. Then, the operator holds the filter plate 7 and slides its slide groove 804 outward along the guide rail 805 inside the housing 1, making it easy to remove the filter plate 7. During the disassembly process, the side wall of the filter plate 7 will press against the sealing strip 901, causing the telescopic rod 902 to retract inward against the elastic force of the spring 903, thereby reducing friction and wear between the sealing strip 901 and the filter plate 7. Once the filter plate 7 is cleaned... When reinstallation is required, slide the slide 804 inward along the guide rail 805 until the limiting post 801 on the filter plate 7 abuts against the positioning block 802. At this point, the filter plate 7 reaches the precise installation position. Then, insert the pin 803 into the through hole of the positioning block 802 and rotate to lock it, thus completing the firm fixation of the filter plate 7. After fixation, the continuous elastic force of the spring 903 acts on the sealing strip 901 through the telescopic rod 902, so that the sealing strip 901 is always tightly attached to the side wall of the filter plate 7, ensuring the airtightness of the equipment.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fan coil unit for ventilation equipment, comprising a housing (1), an impeller (5) disposed within the housing (1), a water inlet (4) and a water outlet (3) disposed on the housing (1), and a filter plate (7); Its features are, The inner wall of the housing (1) is provided with a guide rail (805), and the side wall of the filter plate (7) is provided with a sliding groove (804) that slides with the guide rail (805). The housing (1) is also provided with a positioning block (802), and the filter plate (7) is provided with a pin (803) that cooperates with the positioning block (802) to lock the filter plate (7). A telescopic rod (902) is also provided on the inner wall of the housing (1). A sealing strip (901) is connected to the free end of the telescopic rod (902). A spring (903) is sleeved on the telescopic rod (902). The spring (903) drives the sealing strip (901) to elastically abut against the filter plate (7).

2. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The positioning block (802) has a through hole for inserting the pin (803). The pin (803) passes through the filter plate (7) and can be inserted into the through hole of the positioning block (802).

3. A fan coil unit for ventilation equipment according to claim 2, characterized in that: The pin (803) can be locked by rotation after being inserted into the through hole of the positioning block (802).

4. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The filter plate (7) is also provided with a limiting post (801), which is used to abut against the positioning block (802) to limit the position when the filter plate (7) is installed in place.

5. A fan coil unit for ventilation equipment according to claim 1, characterized in that: One end of the spring (903) abuts against the telescopic rod (902), and the other end abuts against the housing (1) to provide continuous thrust to the telescopic rod (902).

6. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The sealing strip (901) is arranged in the same direction as the sliding direction of the filter plate (7).

7. A fan coil unit for ventilation equipment according to claim 1, characterized in that: A junction box (2) is provided on the outside of the housing (1).

8. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The housing (1) is also provided with an air guide plate (6) located at the air outlet.

9. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The guide rail (805), slide (804), positioning block (802), pin (803) and limiting post (801) together constitute the disassembly and assembly mechanism (8).

10. A fan coil unit for ventilation equipment according to claim 1, characterized in that: The telescopic rod (902), sealing strip (901), and spring (903) together constitute the adaptive mechanism (9).

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