A fan coil unit

Abstract

A fan coil unit, belonging to the field of fan coil unit technology, includes a casing (1) and a heat exchanger installed inside the casing (1). A fan assembly and an air outlet are respectively provided on both sides of the heat exchanger. The key feature is that equal-sized openings are provided on the front and rear end faces of the casing (1). The fan assembly and the air outlet are respectively installed at the openings on the surface of the casing (1). Fixing holes are provided on both sides of the fan assembly and the air outlet, and the relative positions of the fixing holes on the side of the fan assembly and the fixing holes on the side of the air outlet correspond one-to-one. In the fan coil unit of this application, the air outlet and the fan assembly are respectively installed on the surface of the casing through the fixing holes with corresponding front-to-back positions. Therefore, after removing the air outlet seat and the fan seat from the surface of the casing, they can be replaced without disassembling the casing itself, greatly reducing the installation difficulty.

Description

Technical Field

[0001] A fan coil unit, belonging to the field of fan coil unit technology. Background Technology

[0002] Fan coil units are one of the terminal devices in an air conditioning system, typically consisting of a casing, a fan, and a coil. The fan is located on one side of the casing, while the air outlet is located on the other side. The coil is located inside the casing, and chilled or hot water flows through it, exchanging heat with the outside air to cool, dehumidify, or heat the air to regulate indoor air parameters. In traditional fan coil units, the fans and air outlets on both sides of the casing are not interchangeable due to structural differences. Therefore, fan coil units of the same specifications need to be manufactured in left-hand and right-hand versions to meet different installation requirements, which not only increases production costs to some extent but also makes installation and manufacturing more difficult.

[0003] In the existing technology, there are also some technical solutions that allow the installation direction of fan coil units to be interchanged according to the installation conditions. These mainly include the following: (1) Only changing the interface position of the coil, such as the technical solution recorded in the Chinese utility model patent with application number 202223404292.4, application date December 19, 2022, entitled "A fan coil unit with interchangeable left and right pipes", and the technical solution recorded in the Chinese utility model patent with application number 202221513932.2, application date June 16, 2022, entitled "A fan coil unit with interchangeable left and right pipes". Compared with the traditional fan coil unit, this technical solution has improved a certain degree of flexibility, but since only the installation direction of the coil can be changed, it also has certain limitations.

[0004] (2) The Chinese utility model patent with application number 202323497370.4 and application date of December 20, 2023, entitled “fan coil unit”, also describes a technical solution. In this technical solution, not only can the interface position of the coil be interchanged, but the position of the fan and the position of the air outlet can also be changed, which further improves the flexibility of fan coil unit installation. However, the fan and the air outlet of this technical solution are arranged inside the casing. When changing the direction, the casing needs to be removed, so the operation is relatively complicated. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fan coil unit in which the air outlet and the fan assembly are respectively installed on the surface of the housing through fixing holes with corresponding front and rear positions. Therefore, after the air outlet seat and the fan seat are removed from the surface of the housing, they can be replaced without disassembling the housing itself, which greatly reduces the difficulty of installation.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the fan coil unit includes a casing and a heat exchanger installed in the casing. A fan assembly and an air outlet are respectively provided on both sides of the heat exchanger. The feature is that: openings are respectively provided on the front and rear end faces of the casing. The fan assembly and the air outlet are respectively installed at the openings on the surface of the casing. Multiple fixing holes are respectively provided around the fan assembly and the air outlet. The relative positions of the fixing holes around the fan assembly and the fixing holes around the air outlet correspond one-to-one.

[0007] Preferably, the fan assembly includes a fan base, a fan is disposed inside the fan base, the air outlet of the fan faces the opening on the surface of the casing, and a controller mounting cavity is also provided inside the fan base.

[0008] Preferably, a fan is provided on each of the two sides inside the fan base, the controller mounting cavity is located in the middle of the fan base, and a control box cover is provided on the side of the controller mounting cavity away from the casing.

[0009] Only one fan can be installed in the fan base, and the number of fans can be freely set according to the needs.

[0010] Preferably, front fixing plates are provided on both sides of the fan base, and a front mounting groove is provided in the middle of the upper and lower ends of the fan base. The fan assembly peripheral fixing holes include front fixing holes provided in the upper and lower parts of the front fixing plates on both sides, and a middle fixing hole provided in the upper and lower front mounting grooves.

[0011] Preferably, the air outlet includes an air outlet seat installed at the opening on the surface of the housing, and an air outlet duct is provided in the middle of the air outlet seat.

[0012] Preferably, a rear fixing plate is provided on both sides of the air outlet seat, and a rear mounting groove is provided in the middle of the upper and lower ends of the air outlet seat. The fixing holes around the air outlet include rear fixing holes provided in the upper and lower parts of the rear fixing plates on both sides, and a middle fixing hole provided in the upper and lower rear mounting grooves.

[0013] Preferably, the heat exchanger is a surface cooler installed inside the casing, with the interface of the surface cooler leading out from the end cap at one end of the casing.

[0014] Preferably, a water collection box is also provided inside the housing. The water collection box is located at the lower part of the surface cooler, and the interface of the surface cooler and the drain pipe at the end of the water collection box are led out from the same end cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In the fan coil unit of this application, the air outlet and the fan assembly are respectively mounted on the surface of the housing through fixing holes with corresponding front and rear positions. Therefore, after removing the air outlet seat and the fan seat from the surface of the housing, they can be replaced without disassembling the housing itself, which greatly reduces the installation difficulty.

[0017] Since the coil interface position of the surface cooler and the outlet position of the drain pipe are relatively fixed, after changing the installation position of the surface cooler, the relative position of the water collection box and the corresponding end cover position can be adjusted accordingly, without changing the structure of the end covers at both ends. Attached Figure Description

[0018] Figure 1 This is an isometric drawing of a fan coil unit.

[0019] Figure 2 This is a front view of a fan coil unit.

[0020] Figure 3 This is a rear view of a fan coil unit.

[0021] Figure 4 for Figure 2 Sectional view along the AA direction.

[0022] The components include: 1. Housing; 2. Air outlet seat; 3. Rear mounting slot; 4. Surface cooler; 5. Drain pipe; 6. End cover; 7. Front fixing plate; 8. Fan seat; 9. Fan; 10. Control box cover; 11. Middle fixing hole; 12. Front mounting slot; 13. Rear fixing plate; 14. Air outlet duct; 15. Water collection box. Detailed Implementation

[0023] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0024] like Figures 1-3 As shown, a fan coil unit includes a housing 1, which is a horizontally arranged rectangular body with openings at both ends. End caps 6 are respectively provided at the two ends of the housing 1.

[0025] On the front and rear end faces of the housing 1, there are openings of equal size. A fan assembly and an air outlet seat 2 are respectively installed at the openings on both sides. The fan assembly includes a fan seat 8, with one fan 9 installed on each of the two sides inside the fan seat 8. A controller mounting cavity is located in the middle of the fan seat 8, with the two fans 9 positioned on either side of the controller mounting cavity. The controller is installed inside the controller mounting cavity, and a control box cover 10 is provided on the outside of the controller mounting cavity. The air inlet of the fan 9 faces the opening on the surface of the fan seat 8, and the air outlet of the fan 9 faces the opening on the surface of the housing 1.

[0026] In the fan coil unit of this application, the fan 9 adopts a backward-curved centrifugal fan, which reduces the width by half and the thickness by less compared with the traditional forward-curved volute centrifugal fan, thus greatly reducing the volume of the fan coil unit of this application.

[0027] Front mounting plates 7 are provided on both sides of the fan base 8, and a front mounting hole is provided at the upper and lower parts of the front mounting plates 7. A front mounting groove 12 is also provided in the middle of the upper and lower ends of the fan base 8, and a central mounting hole 11 is provided at the middle of the end of each front mounting groove 12. Front mounting holes corresponding to the front mounting holes and the two central mounting holes 11 are provided on the front surface of the housing 1. The fan base 8 is mounted on the front end face of the housing 1 through the front mounting holes at its four corners and the two central mounting holes 11.

[0028] Rear mounting plates 13 are provided on both sides of the air outlet seat 2, and a rear mounting hole is provided at the upper and lower parts of the rear mounting plates 13. A rear mounting groove 3 is also provided in the middle of the upper and lower ends of the air outlet seat 2, and a central mounting hole 11 is provided at the middle of the end of each rear mounting groove 3. Front mounting holes corresponding to the rear mounting holes and the two central mounting holes 11 are provided on the rear surface of the housing 1. The air outlet seat 2 is installed on the rear end face of the housing 1 through the rear mounting holes at its four corners and the two central mounting holes 11.

[0029] The relative positions of the rear fixing holes at the four corners of the air outlet seat 2 correspond one-to-one with the relative positions of the front fixing holes at the four corners of the fan seat 8. Furthermore, the positions of the central fixing hole 11 in the rear mounting groove 3 in the middle of the air outlet seat 2 and the central fixing hole 11 in the front mounting groove 12 in the middle of the fan seat 8 correspond one-to-one. Therefore, after removing the air outlet seat 2 and the fan seat 8 from the surface of the housing 1, they can be replaced without disassembling the housing 1 itself, which greatly reduces the difficulty of installation.

[0030] Combination Figure 4 A surface cooler 4 is installed inside the casing 1, running horizontally within the casing 1. A water collection box 15 is also installed at the bottom of the casing 1, with the surface cooler 4 located above the water collection box 15. The coil interface of the surface cooler 4 and the drain pipe 5, which extends from one side of the water collection box 15, are respectively led out from the end cap 6 at one end of the casing 1. Since the positions of the coil interface of the surface cooler 4 and the outlet position of the drain pipe 5 are relatively fixed, after changing the installation position of the surface cooler 4, only the relative positions of the water collection box 15 and the corresponding end cap 6 need to be adjusted accordingly, without changing the structure of the end caps 6 at both ends.

[0031] The specific working process and working principle are as follows:

[0032] After the fan 9 is turned on, the air blown out passes through the surface cooler 4 and then through the air outlet duct 14 in the middle of the air outlet seat 2. During the process of the air passing through the surface cooler 4, the air completes the heat exchange with the medium to be heat exchanged in the surface cooler 4.

[0033] When it is necessary to change the installation position of the fan base 8 and the air outlet base 2, remove the fan base 8 and the air outlet base 2 from the surface of the housing 1, exchange their positions, and then fix them in place after aligning them with the mounting holes on the surface of the housing 1.

[0034] When it is necessary to change the installation position of the surface cooler 4, open the end covers 6 at both ends of the housing 1, remove the surface cooler 4 and the water collection box 15 from the housing 1 respectively and swap their positions. At the same time, swap the positions of the end covers 6 accordingly.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A fan-coil comprising a casing (1) and a heat exchanger mounted in the casing (1), a fan assembly and an air outlet being provided on opposite sides of the heat exchanger, characterised in that: Openings are provided on the front and rear ends of the housing (1). The fan assembly and the air outlet are respectively installed at the openings on the surface of the housing (1). Multiple fixing holes are provided around the fan assembly and the air outlet. The relative positions of the fixing holes around the fan assembly and the fixing holes around the air outlet correspond one-to-one.

2. The fan coil unit according to claim 1, characterized in that: The fan assembly includes a fan base (8), and a fan (9) is installed inside the fan base (8). The air outlet of the fan (9) faces the opening on the surface of the housing (1). A controller mounting cavity is also provided inside the fan base (8).

3. The fan coil unit according to claim 2, characterized in that: A fan (9) is installed on each side inside the fan base (8). The controller mounting cavity is located in the middle of the fan base (8). The controller mounting cavity is provided with a control box cover (10) on the side away from the casing (1).

4. The fan coil unit according to claim 2, characterized in that: Front fixing plates (7) are provided on both sides of the fan base (8). A front mounting groove (12) is also provided in the middle of the upper and lower ends of the fan base (8). The fan assembly's peripheral fixing holes include front fixing holes provided in the upper and lower parts of the front fixing plates (7) on both sides, and a middle fixing hole (11) provided in the upper and lower front mounting grooves (12).

5. The fan coil unit according to claim 1, characterized in that: The air outlet includes an air outlet seat (2) installed at the opening on the surface of the housing (1), and an air outlet duct (14) is provided in the middle of the air outlet seat (2).

6. The fan coil unit according to claim 5, characterized in that: A rear fixing plate (13) is provided on both sides of the air outlet seat (2). A rear mounting groove (3) is also provided in the middle of the upper and lower ends of the air outlet seat (2). The air outlet perimeter fixing holes include the rear fixing holes provided in the upper and lower parts of the rear fixing plates (13) on both sides, and the middle fixing hole (11) provided in the upper and lower rear mounting grooves (3).

7. The fan coil unit according to claim 1, characterized in that: The heat exchanger is a surface cooler (4) installed inside the housing (1), and the interface of the surface cooler (4) is led out from the end cap (6) at one end of the housing (1).

8. The fan coil unit according to claim 1, characterized in that: A water collection box (15) is also provided inside the housing (1). The water collection box (15) is located at the lower part of the surface cooler (4). The interface of the surface cooler (4) and the drain pipe (5) at the end of the water collection box (15) are led out from the same end cover (6).

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