Fan-coil unit with water pan heating and drying function

Abstract

The utility model discloses a fan -coil unit with water tray heating drying function, including the casing and the water collecting tray, the casing is equipped with the inner chamber, the casing is equipped with the air inlet and the air outlet, the position of air inlet is equipped with the fan, be equipped with the condenser pipe subassembly between the air outlet and the fan, the water collecting tray is located the position below the condenser pipe subassembly, the water collecting tray is used to collect the condensate water of the condenser pipe subassembly, the wall surface of water collecting tray is equipped with the drain groove, the outer wall of water collecting tray is equipped with the protective layer, the outer wall of water collecting tray and the inner wall of protective layer are equipped with the serpentine spiral heating wire, and the outer wall of heating wire is covered with the silicon rubber layer. In the existing design heating device has not been set up mainly exists in air conditioning field long -term existence liquid and easy to appear the problem of corrosion or damage, has adopted in the outer wall of water collecting tray setting heating wire, and realizes protection through the silicon rubber layer, effectively reduces corrosion, and setting in the outer wall also makes installation simpler.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment, and in particular to a fan coil unit with a water tray heating and drying function. Background Technology

[0002] When fan coil units are supplying cooling, a large amount of condensate flows into the water pan. The condensate in the water pan can be affected by factors such as installation level and blockages, leading to insufficient drainage and excessive water accumulation, or incomplete drainage leaving water stains. Long-term water accumulation and dampness in the water pan can easily cause odors, mold, and bacterial growth, accelerating corrosion of the water pan and the unit's sheet metal.

[0003] Existing practices, such as Chinese Patent 202323429626.8, employ an inclined structure and water-absorbing beads to achieve drying. However, the water-absorbing beads are consumables and need to be replaced after a period of use, which is not conducive to commercial air conditioners and has limitations. Utility Model Content

[0004] The main purpose of this utility model is to propose a fan coil unit with water tray heating and drying function. It aims to dry the condensate through a heating device. At the same time, its installation and heating methods are simple and stable, and it can be added without changing the existing structure, thus improving the consistency of production.

[0005] To achieve the above objectives, this utility model proposes a fan coil unit with a water tray heating and drying function, comprising: The housing has an inner cavity, and the housing has an air inlet and an air outlet; A fan is installed at the air inlet, and a condenser tube assembly is installed between the air outlet and the fan; A water collection tray is located below the condenser tube assembly and is used to collect condensate from the condenser tube assembly. The wall of the water collection tray is provided with a drainage groove; The outer wall of the water collection tray is provided with a protective layer. A winding heating wire is provided between the outer wall of the water collection tray and the inner wall of the protective layer, and the outer wall of the heating wire is covered with a silicone rubber layer. 1. The main reason why heating devices have not been installed in existing designs is that liquids in the air conditioning industry are prone to corrosion or damage. 2. Heating wires are installed on the outer wall of the water collection pan and protected by a silicone rubber layer, which effectively reduces corrosion. The outer wall installation also simplifies the installation process. 3. The heating wires installed on the outer wall can reduce corrosion, improve the durability of the heating device, and reduce the mutual influence between the heating device and the water collection tray. Attached Figure Description

[0006] Figure 1 This is a three-dimensional schematic diagram of the present utility model. Figure 1 ; Figure 2 This is a three-dimensional schematic diagram of the present utility model. Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the present utility model. Figure 3 ; Figure 4 This is a cross-sectional view of the present utility model. Figure 1 ; Figure 5 This is a cross-sectional view of the present utility model. Figure 2 .

[0007] In the picture, 1 represents the outer casing, 10 represents the inner cavity, 11 represents the air inlet, and 12 represents the air outlet. 2 represents the fan, 21 represents the rotary motor, 22 represents the shaft, and 23 represents the blade. 3 is the condenser tube assembly. 4 is the water collection tray, 40 is the drainage trough, 41 is the base, and 42 is the surrounding area. 5 is the heating wire, 50 is the protective layer, 51 is the first electrode, and 52 is the second electrode. 6 is the liquid level detection device, 61 is the support leg, 62 is the water passage, and 63 is the probe. 100 is the control panel. Detailed Implementation

[0008] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0009] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0010] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0011] like Figures 1 to 5 As shown, a fan coil unit with water pan heating and drying function includes: The housing 1 has an inner cavity 10, an air inlet 11, and an air outlet 12. A fan 2 is provided at the air inlet 11, and a condenser tube assembly 3 is provided between the air outlet 12 and the fan 2; Water collection tray 4 is located below the condenser tube assembly 3 and is used to collect condensate from the condenser tube assembly 3. The wall of the water collection tray 4 is provided with a drainage groove 40; The outer wall of the water collection tray 4 is provided with a protective layer 50. A meandering heating wire 5 is provided between the outer wall of the water collection tray 4 and the inner wall of the protective layer 50, and the outer wall of the heating wire 5 is covered with a silicone rubber layer. 1. The main reason why heating devices have not been installed in existing designs is that liquids in the air conditioning industry are prone to corrosion or damage. 2. Heating wires 5 are installed on the outer wall of the water collection pan 4 and protected by a silicone rubber layer, which effectively reduces corrosion. At the same time, the installation on the outer wall makes the installation simpler. 3. The heating wire 5 installed on the outer wall can reduce corrosion, improve the durability of the heating device, and reduce the mutual influence between the heating device and the water collection tray 4.

[0012] The fan coil unit with heating and drying function in the water collection pan 4 can solve the problem of long-term water accumulation in the water collection pan 4, and avoid problems such as odor, mold and bacterial growth caused by water accumulation.

[0013] It prevents corrosion of the water collection tray 4 and the unit's sheet metal, extends the unit's service life, and reduces the number of unit maintenance operations.

[0014] Specifically, the water collection tray 4 is equipped with a liquid level detection device 6 at the position of the drainage trough 40. The bottom wall of the liquid level detection device 6 is provided with multiple support legs 61, and a water passage 62 is provided between adjacent support legs.

[0015] Specifically, the liquid level detection device 6 is equipped with at least two probes 63 of different heights to detect different liquid levels.

[0016] In this embodiment of the utility model, the liquid level detection device 6 is used to detect whether there is liquid residue in the water collection pan 4 after the air conditioning unit is stopped. When residue is detected, the heating wire 5 is turned on through the control device.

[0017] Specifically, the drainage trough 40 is provided on the bottom wall or side wall of the water collection tray 4.

[0018] In this embodiment of the utility model, the water collection tray 4 includes a base 41 and a surrounding portion 42 disposed on the outer periphery of the base 41. The base and the surrounding portion form a water collection trough. The drainage trough 40 is disposed at the position of the surrounding portion. The base is gradually lowered from the inside towards the drainage trough 40, thereby forming a certain slope to achieve drainage.

[0019] Specifically, the fan 2 includes a rotary motor 21, a rotating shaft 22 located on both sides of the rotary motor 21, and blades 23 located on the rotating shaft, which adopts a dual-shaft mechanism to improve the fluid flow rate.

[0020] In this embodiment of the invention, the distance between the base and the end of the lowest probe 63 is 1.5 mm.

[0021] Specifically, the water collection tray 4 extends a predetermined length from the housing 1 and also includes a control panel connected to the liquid level detection device 6 and the heating wire 5. The control panel is located on the side wall of the housing 1 away from the water collection tray 4.

[0022] In this embodiment of the utility model, the heating wire 5 includes a first electrode 51 and a second electrode 52. The second electrode 52 is distributed along the outer side of the enclosure and is located at the same end as the first electrode 51, that is, it is arranged in a winding circle, which not only ensures the heating of the water collection tray 4, but also facilitates electrical connection.

[0023] Silicone rubber heating wires 5 are evenly distributed on the outer layer of the sheet metal surface of the water collection tray 4, and then insulation is applied. The silicone rubber heating wires 5 are hidden in the interlayer and do not affect the appearance of the water tray.

[0024] The heating wire 5 has a diameter of 2mm and a heating temperature of up to 60℃. Its even distribution ensures that the water tray is heated evenly and accelerates the evaporation of residual water stains.

[0025] Since the heating wire 5 cannot be turned on at all times, affecting the cooling operation of the unit, it needs to function only when the unit is stopped. This includes the liquid level detection device 6 and the control board.

[0026] The liquid level detection device 6 is attached to the water tray. The base plate has a drainage groove 40 and two stainless steel probes 63. The drainage groove 40 ensures smooth drainage, and the probes 63 can detect water stains as low as 1.5 mm in depth and form a weak current loop. The liquid level detection device 6 converts the electrical signal and feeds it back to the control board. This electrical signal is used to control the working state of the heating wire 5 and is equipped with a set of control logic.

[0027] Control logic: 1. When the unit stops supplying cooling, the water level detection device 6 starts working. After detecting water stains, it sends an electrical signal to the control board, which then continuously supplies power to the heating wire. When the residual condensate in the water pan is less than 1.5mm, the water level detection device 6 can no longer detect water stains, the electrical signal is disconnected, and the control board continues to supply power to the heating wire for 1 hour to ensure that the condensate in the water pan can be heated and evaporated completely. 2. When the unit stops cooling, the water level detection device 6 will start working. If no water stains are detected and no feedback signal is received within 5 minutes, the control board will continuously supply power to the heating wire for 1 hour to ensure that the condensate in the water pan can be heated and evaporated completely. 3. When the unit's motor is running, the control board stops supplying power to the heating wires, which does not affect the unit's cooling operation.

[0028] Of course, other existing technical solutions can also be used.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fan coil unit with water tray heating and drying function, characterized in that, include: The housing has an inner cavity, and the housing has an air inlet and an air outlet; A fan is installed at the air inlet, and a condenser tube assembly is installed between the air outlet and the fan; A water collection tray is located below the condenser tube assembly and is used to collect condensate from the condenser tube assembly. The wall of the water collection tray is provided with a drainage groove; The outer wall of the water collection tray is provided with a protective layer. A winding heating wire is provided between the outer wall of the water collection tray and the inner wall of the protective layer, and the outer wall of the heating wire is covered with a silicone rubber layer.

2. The fan coil unit with water tray heating and drying function as described in claim 1, characterized in that: The water collection tray is equipped with a liquid level detection device located at the position of the drainage trough. The liquid level detection device is detachably installed on the water collection tray. The bottom wall of the liquid level detection device is provided with multiple legs, and water passages are provided between adjacent legs.

3. The fan coil unit with water tray heating and drying function as described in claim 2, characterized in that: The liquid level detection device is equipped with at least two probes of different heights.

4. The fan coil unit with water tray heating and drying function as described in claim 3, characterized in that: The liquid level detection device is used to detect whether there is liquid residue in the water collection pan after the air conditioning unit is stopped. When residue is detected, the heating wire is turned on through the control device.

5. The fan coil unit with water tray heating and drying function as described in claim 1, characterized in that: The drainage trough is located on the bottom or side wall of the water collection basin.

6. The fan coil unit with water tray heating and drying function as described in claim 3, characterized in that: The water collection tray includes a base and a surrounding portion located on the outer periphery of the base. The base and the surrounding portion form a water collection trough. The drainage trough is located at the position of the surrounding portion. The base is gradually lowered from the inside towards the drainage trough.

7. The fan coil unit with water tray heating and drying function as described in claim 1, characterized in that: The fan includes a rotary motor, shafts located on both sides of the rotary motor, and blades located on the shafts.

8. The fan coil unit with water tray heating and drying function as described in claim 6, characterized in that: The distance between the base and the end of the lowest probe is 1.5 mm.

9. The fan coil unit with water tray heating and drying function as described in claim 6, characterized in that: The water collection tray extends beyond the housing by a predetermined length and also includes a control panel connected to a liquid level detection device and a heating wire. The control panel is located on the side wall of the housing away from the water collection tray, and the liquid level detection device is located at the position where the water collection tray extends beyond the housing.

10. The fan coil unit with water tray heating and drying function as described in claim 6, characterized in that: The heating wire includes a first electrode and a second electrode, with the second electrode distributed along the outer side of the enclosure and located at the same end as the first electrode.

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