Narrow-surface floor type fan coil

Abstract

The utility model relates to a narrow-face floor type fan coil. The floor type fan coil comprises an outer box body, a fan and a heat exchange coil, a winding type load-bearing grating or a straight strip type load-bearing grating and a top plate are arranged at the top of the outer box body, the grating is arranged on one side of the top of the outer box body, and the width of the grating is 50-100 mm; the left end of the grating is provided with a plane air return port, the right end of the grating is provided with a plane air supply port, the heat exchange coil is installed in the inner space of the outer box body below the grating, an air inlet of the heat exchange coil corresponds to the air return port, and an air outlet of the heat exchange coil corresponds to an outlet of the air supply silencing box at one end of the fan. The fan is a low-noise direct-current volute-free fan and is installed below the top plate. The utility model has the advantages that by arranging the narrow grids, the airflow mode of left-end air return and right-end air supply is realized, the airflow short-circuit risk is avoided, the floor area utilization rate is improved, and the floor is more attractive; the high-air-pressure low-noise direct-current volute-free fan is adopted, the air supply distance is increased, and the anti-condensation effect of the upper portion of the glass curtain wall is better.

Description

Technical Field

[0001] This utility model relates to the field of floor-mounted fan coil unit technology, specifically to a narrow-faced floor-mounted fan coil unit. Background Technology

[0002] With the continuous development of modern architecture, glass curtain walls are being used more and more widely. Whether it is high-rise buildings, high-end office buildings, high-end residences, star-rated hotels, airport terminals, art centers, grand theaters and other buildings at home and abroad, glass curtain walls are used extensively. As a result, convection devices for preventing condensation on glass curtain walls, namely floor-mounted fan coil units, are also constantly being developed.

[0003] Existing floor-mounted fan coil units typically feature a full-face grille on the top of the casing for both return and supply air. For example, Chinese patent CN201721246891.4 discloses a floor-mounted fan coil unit where the unit is installed within a floor cavity, with the aluminum alloy inlet and outlet grilles exposed on the floor surface. The large grille width negatively impacts aesthetics and easily leads to dirt accumulation. Furthermore, existing floor-mounted fan coil units suffer from the following problems: Traditional floor-mounted fan coil units use cross-flow fans, resulting in a low total pressure ratio and short air delivery distance. This leads to poor anti-condensation performance on the upper part of glass curtain walls. Additionally, the return air undergoes heat exchange after passing through the fan before being supplied through the outlet, further reducing pressure and shortening the delivery distance. The aluminum alloy grille in traditional floor-mounted fan coil units has one side for return air and one side for supply air. Due to the low total pressure ratio of the cross-flow fan, dust accumulation causes a sharp drop in supply air pressure, leading to airflow short-circuiting and a significant decrease in anti-condensation effectiveness. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a narrow-face floor-mounted fan coil unit, which can solve the problems of existing technology where setting a full-face grille affects the aesthetics and is prone to dirt accumulation, the short air delivery distance leads to poor anti-condensation effect, and dust accumulation on the grille causes a sharp drop in air delivery pressure, resulting in airflow short circuit and a sharp decrease in anti-condensation effect.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: it includes an outer casing and a fan and heat exchange coil installed inside the outer casing. The top of the outer casing is provided with a grille. The top of the outer casing is further provided with a top plate. The grille is located on one side of the top of the outer casing, and the length direction of the grille is consistent with the length direction of the outer casing. The width of the grille is smaller than the width of the top plate. The bottom of the grille is provided with a perforated plate.

[0006] One end of the grille is provided with a flat return air inlet, and the other end is provided with a flat air supply outlet. The heat exchange coil is installed in the internal space of the outer casing below the grille. The air inlet of the heat exchange coil is set to correspond to the return air inlet, and the air outlet of the heat exchange coil is set to correspond to the outlet of the air supply silencer box at one end of the fan.

[0007] The fan is a volute-less fan, and the fan is installed below the top plate;

[0008] The outer casing is an insulated casing.

[0009] Furthermore, the length of the grille is the same as the length of the outer casing, and the width of the grille is 1 / 4 to 1 / 3 of the width of the outer casing, with a grille width of 50-100mm.

[0010] Furthermore, the fan is provided with a return air silencer box at the end near the return air inlet and an air supply silencer box at the end near the air supply outlet.

[0011] Furthermore, the fan is a low-noise DC EC volute-less fan, and the fan's junction box is located on one side of the return air silencer box.

[0012] Furthermore, a return air silencing cavity and a supply air silencing cavity are provided below the top plate. The return air silencing cavity and the supply air silencing cavity are respectively set to the planar return air inlet and the planar supply air inlet. The end of the fan is provided with a supply air silencing box, which extends from the return air silencing cavity into the supply air silencing cavity.

[0013] Furthermore, the heat exchange coil is inclined, with the higher end of the heat exchange coil closer to the fan and the lower end of the heat exchange coil farther away from the fan. A water pan is provided at the bottom of the heat exchange coil, with the bottom of the heat exchange coil located below the top of the water pan. A condensate drain pump is installed inside the water pan.

[0014] Furthermore, the heat exchange coil is installed vertically.

[0015] With the above structure, the advantages of this utility model are: by setting the grille on one side of the top of the outer box, the grille is narrow, which improves the utilization rate of the floor area and is more beautiful, and does not easily cause dirt accumulation.

[0016] With the airflow pattern of return air on the left and supply air on the right, there is no risk of airflow short circuit. It adopts a low-noise DC high-pressure volute-less fan with a wind pressure that is much greater than that of traditional cross-flow fans, which greatly increases the air delivery distance and provides better anti-condensation effect on the upper part of the glass curtain wall. The use of return air silencer box and supply air silencer box can greatly reduce the noise of the unit.

[0017] The return air enters the flat return air inlet through the grille, and is first filtered by the perforated plate to prevent debris on the floor from entering the unit. After being cooled or heated by the heat exchange coil, the return air is drawn in by the low-noise DC EC volute-less fan. After being pressurized, the air enters the air supply silencer box, and finally the air is delivered into the room from the air outlet. This can avoid the pressure from decreasing during heat exchange, avoid the air supply distance from decreasing, and ensure the anti-condensation effect on the upper part of the glass curtain wall.

[0018] The return air is cooled or heated by passing through the heat exchange coil. The condensate drains from the water pan. The heat exchange coil is set at an angle to facilitate the condensate to fall into the water pan along the bottom of the heat exchange coil. The lower end of the heat exchange coil is set away from the fan, and the condensate falls away from the fan to prevent damage to the fan. Attached Figure Description

[0019] Figure 1 This is a front view of Embodiment 1 of the present invention;

[0020] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0021] Figure 3 This is a side view of Embodiment 1 of the present invention;

[0022] Figure 4 This is a front view of Embodiment 2 of the present invention;

[0023] Figure 5 This is a top view of Embodiment 2 of the present invention;

[0024] Figure 6 This is a side view of Embodiment 2 of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments can enable those skilled in the art to more fully understand this utility model, but do not limit the present utility model to the scope of the described embodiments.

[0026] Example 1:

[0027] like Figures 1-3 As shown, this specific embodiment adopts the following technical solution: it includes an outer casing 1 and a fan 2 and a heat exchange coil 3 installed inside the outer casing 1. The outer casing 1 is an insulated casing.

[0028] The top of the outer casing 1 is provided with a grille 4, which is a rollable load-bearing grille or a straight bar load-bearing grille. The top of the outer casing 1 is also provided with a top plate 5. The grille 4 is located on one side of the top of the outer casing 1, and the length direction of the grille 4 is consistent with the length direction of the outer casing 1. The length of the grille 4 is the same as the length of the outer casing 1. The width of the grille 4 is less than the width of the top plate 5. Specifically, the width of the grille 4 is 1 / 4 to 1 / 3 of the width of the outer casing 1, and the grille width is 50-100mm. In this embodiment, the width of the grille 4 is 100mm. The narrow surface of the grille 4 is more aesthetically pleasing, improves the utilization rate of the floor area, and is less likely to cause dirt accumulation. The bottom of the grille 4 is provided with a perforated plate 6, which can filter the air and prevent debris on the floor from entering the unit.

[0029] Fan 2 is a low-noise DC EC volute-less fan with a high pressure of over 300Pa, while the traditional cross-flow fan has a pressure of only about 30-50Pa. Fan 2 is installed below the top plate 5.

[0030] One end of the grille 4 is provided with a planar return air inlet, and the other end is provided with a planar supply air inlet. In this embodiment, as shown... Figure 1 and Figure 2 As shown, the planar return air inlet is located on the left side of the grille 4, the planar supply air inlet is located on the right side of the grille 4, and the heat exchange coil 3 is installed in the internal space of the outer casing 1 below the grille 4.

[0031] A return air silencer box 7 is provided at the end of the fan 2 near the plane return air inlet, and a supply air silencer box 8 is provided at the end of the fan 2 near the plane supply air inlet. The junction box of the fan 2 is located on one side of the return air silencer box 7. The air inlet of the heat exchange coil 3 is set to correspond to the return air inlet, and the air outlet of the heat exchange coil 3 is set to correspond to the outlet of the supply air silencer box at one end of the fan 2. After the return air is cooled or heated by the heat exchange coil 3, it enters the return air silencer box 7 and is drawn in by the low-noise DC EC volute-less fan 2. After being pressurized, the air enters the supply air silencer box 8, and finally the air is sent into the room from the air outlet to avoid reducing the air supply distance.

[0032] A water pan 9 is provided at the bottom of the heat exchange coil 3, and a condensate pipe 10 is installed on the water pan 9. Condensate drains from the water pan 9. A condensate drain pump is installed in the water pan 9. The heat exchange coil 3 is set at an angle or vertically. In this embodiment, the heat exchange coil 3 is set at an angle to facilitate the condensate to fall into the water pan 9 along the bottom of the heat exchange coil 3. The heat exchange coil 3 is connected to a chilled water system or a hot water system to provide cooling or heating air conditioning treatment for indoor air when needed. The higher end of the heat exchange coil 3 is set close to the fan 2, and the lower end of the heat exchange coil 3 is set away from the fan 2. The bottom of the heat exchange coil 3 is set below the top of the water pan 9, and the condensate falls away from the fan 2 to prevent damage to the fan.

[0033] Working Principle: Indoor airflow enters the perforated plate 6 from the left side of the 100mm wide aluminum alloy grille 4. The perforated plate 6 prevents debris on the floor from entering the unit. The airflow is cooled or heated by the heat exchange coil 3. Condensate drains from the water pan 9, and a condensate pump lifts and discharges the condensate. The cooled or heated air enters the return air silencer box 7 and is drawn in by the DC EC volute-less fan 2. After pressurization, the air enters the supply air silencer box 8, and finally, the air is delivered into the room from the right side of the 100mm wide aluminum alloy grille 4. The narrow grille 4 is more aesthetically pleasing, improves the utilization of floor space, and is less prone to dirt accumulation. The low-noise, high-pressure volute-less fan 2 has a wind pressure much greater than... Traditional cross-flow fans significantly increase air delivery distance and provide better anti-condensation effect on the upper part of the glass curtain wall. They also prevent airflow short-circuiting during long-term operation. The use of a return air silencer box 7 and a supply air silencer box 8 greatly reduces unit noise. Air undergoes heat exchange before being directly delivered by the fan 2, avoiding pressure reduction and ensuring a longer delivery distance, thus guaranteeing the anti-condensation effect on the upper part of the glass curtain wall. Return air is cooled or heated by the heat exchange coil 3, and condensate drains from the water pan 9. The heat exchange coil 3 is angled to facilitate condensate falling along its bottom into the water pan 9, with the lower end of the coil away from the fan 2, preventing damage to the fan 2.

[0034] The low-noise DC EC volute-less fan 2, heat exchange coil 3, return air silencer box 7 and supply air silencer box 8, condensate pump and other components mentioned above are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods, and will not be elaborated further.

[0035] Example 2:

[0036] like Figure 4-Figure 6 As shown, the structure of this embodiment 2 is the same as that of embodiment 1, except that: a return air silencing cavity 11 and a supply air silencing cavity 12 are provided below the top plate 5. The return air silencing cavity 11 and the supply air silencing cavity 12 are respectively set to the planar return air inlet and the planar supply air outlet. The end of the fan 2 is provided with a supply air silencing box 8. The supply air silencing box 8 extends from the return air silencing cavity 11 to the supply air silencing cavity 12. The cooled or heated air is directly drawn into the DC EC volute-less fan 2. After being pressurized, the air enters the supply air silencing box 8. Finally, the air is sent into the room from the right side of the 100mm wide aluminum alloy grille 4.

[0037] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A narrow-faced floor-mounted fan coil unit, comprising an outer casing and a fan and heat exchange coil disposed within the outer casing, wherein the top of the outer casing is provided with a grille, characterized in that: The top of the outer casing is also provided with a top plate, the grille is provided on one side of the top of the outer casing, and the length direction of the grille is consistent with the length direction of the outer casing. The width of the grille is smaller than the width of the top plate, and a perforated plate is provided at the bottom of the grille. One end of the grille is provided with a flat return air inlet, and the other end is provided with a flat air supply outlet. The heat exchange coil is installed in the internal space of the outer casing below the grille. The air inlet of the heat exchange coil is set to correspond to the return air inlet, and the air outlet of the heat exchange coil is set to correspond to the outlet of the air supply silencer box at one end of the fan. The fan is a volute-less fan, and the fan is installed below the top plate; The outer casing is an insulated casing.

2. A narrow-face floor-mounted fan coil unit according to claim 1, characterized in that: The length of the grille is the same as the length of the outer casing, and the width of the grille is 1 / 4 to 1 / 3 of the width of the outer casing, with a grille width of 50-100mm.

3. A narrow-face floor-mounted fan coil unit according to claim 1, characterized in that: The fan is equipped with a return air silencer box at the end near the return air inlet and an air supply silencer box at the end near the air supply outlet.

4. A narrow-face floor-mounted fan coil unit according to claim 3, characterized in that: The fan is a low-noise DC EC volute-less fan, and the fan's junction box is located on one side of the return air silencer box.

5. A narrow-face floor-mounted fan coil unit according to claim 1, characterized in that: The top plate is provided with a return air silencing cavity and a supply air silencing cavity below it. The return air silencing cavity and the supply air silencing cavity are respectively set to the planar return air inlet and the planar supply air inlet. The end of the fan is provided with a supply air silencing box, which extends from the return air silencing cavity into the supply air silencing cavity.

6. A narrow-face floor-mounted fan coil unit according to claim 1, characterized in that: The heat exchange coil is inclined, with the higher end of the heat exchange coil closer to the fan and the lower end of the heat exchange coil farther away from the fan. A water pan is provided at the bottom of the heat exchange coil, with the bottom of the heat exchange coil located below the top of the water pan. A condensate drain pump is installed in the water pan.

7. A narrow-face floor-mounted fan coil unit according to claim 1, characterized in that: The heat exchange coil is installed vertically.

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