An integrated dry fan coil

Abstract

The present application discloses an integrated dry fan coil unit, which relates to the technical field of fan coil units and is invented to solve the problem that the installation process of existing dry fan coil units is complicated and cumbersome due to the presence of condensate system pipes. The dry fan coil unit provided by the present application includes: a housing in which a air duct is formed, and an air return opening and an air supply opening communicating with the air duct are provided on the housing; a fan installed in the air duct; a heat exchange coil installed in the air duct and located between the fan and the air supply opening; a deflector installed in the housing, the fan is located below the deflector, the heat exchange coil is located above the deflector, the fan includes a volute and an impeller installed in the volute, the air outlet of the volute faces upward, and the deflector can guide the condensate generated on the surface of the heat exchange coil into the volute. The dry fan coil unit of the present application is used to adjust indoor air.

Description

Technical Field

[0001] This application relates to the technical field of fan coil units, and particularly to an integrated dry fan coil unit. Background Art

[0002] The fan coil unit, abbreviated as fan coil, is one of the terminal devices of an air conditioning system composed of a fan, a motor, a heat exchange coil, etc. When chilled water or hot water flows through the pipes of the heat exchange coil, heat exchange occurs with the air outside the pipes, cooling, dehumidifying or heating the air, so as to adjust the indoor air parameters. The fan coil is a commonly used terminal device for cooling and heating.

[0003] The design conditions of the chilled water of the dry fan coil unit are different from those of the conventional fan coil unit. Among them, the supply water temperature of the chilled water of the dry fan coil unit is usually about 16°C, while the supply water temperature of the chilled water of the conventional fan coil unit is generally 7°C. Therefore, the dry fan coil unit and the conventional fan coil unit cannot replace each other. It is precisely because the supply water temperature of the chilled water under the design conditions of the dry fan coil is generally higher than the dew point temperature of the air in the use environment that no condensed water is generated on the surface of the coil during the air cooling process, that is, a dry cooling process is achieved.

[0004] However, in the existing dry fan coil unit, a fan 01 and a heat exchange coil 02 are provided in the housing. In order to prevent the wet load in the indoor space from fluctuating and causing the wet load in the room to increase in a short time, resulting in condensed water on the surface of the coil, a condensed water sump 03 is still provided below the heat exchange coil 02, and a condensed water system pipe 04 for discharging the condensed water in the condensed water sump 03, as Figure 1 shown. At the same time, in order to ensure that the condensed water can be discharged smoothly, the above-mentioned condensed water system pipe 04 needs to have an appropriate slope, which makes the installation process of the existing dry fan coil complex and cumbersome. Summary of the Invention

[0005] The integrated dry fan coil unit provided by the embodiments of this application is used to solve the problem that the installation process of the existing dry fan coil is complex and cumbersome due to the presence of a condensed water system pipe.

[0006] The integrated dry fan coil unit provided by the embodiment of the present application includes: a housing, a duct is formed inside the housing, and an air return opening and an air supply opening communicating with the duct are provided on the housing; a fan, the fan is installed in the duct; a heat exchange coil, the heat exchange coil is installed in the duct and located between the fan and the air supply opening; a guide plate, the guide plate is installed inside the housing, the fan is located below the guide plate, the heat exchange coil is located above the guide plate, the fan includes a volute and an impeller installed in the volute, the air outlet of the volute faces upward, and the guide plate can guide the condensed water generated on the surface of the heat exchange coil into the volute.

[0007] In the embodiment of the present application, the heat exchange coil is located above the guide plate, that is, the heat exchange coil is installed in the upper space of the housing. When the wet load in the indoor space fluctuates and causes the wet load in the indoor space to increase in a short time, a small amount of condensed water generated on the surface of the heat exchange coil will flow downward under the action of gravity and accumulate on the upper surface of the guide plate. Subsequently, the accumulated condensed water will flow into the volute of the fan under the guidance of the guide plate. In the embodiment of the present application, by using the internal space of the volute to store a small amount of condensed water generated on the surface of the heat exchange coil, the condensed water is temporarily stored in the volute, and the condensed water can be evaporated by the dry air sucked by the fan after the wet load in the indoor space returns to normal. In the embodiment of the present application, the condensate water pan and the condensate water system pipeline in the prior art are cancelled, that is, the above integrated dry fan coil unit in the present application does not need to install the condensate water system pipeline during the installation process, thereby simplifying the installation steps and installation costs of the integrated dry fan coil unit.

[0008] In some embodiments, a diversion opening is provided on the guide plate, and the diversion opening is disposed opposite to the air outlet of the volute. In the horizontal projection of the diversion opening, the diversion opening is located inside the air outlet of the volute, ensuring that all the condensed water generated on the surface of the heat exchange coil flows into the volute.

[0009] In some embodiments, the guide plate is horizontally arranged, which is beneficial to reducing the height of the housing.

[0010] In some embodiments, the above integrated dry fan coil unit further includes: a diversion member, the diversion member is disposed at the diversion opening and on the side of the guide plate close to the fan, and the diversion member is used to guide the condensed water on the guide plate to the inner wall of the volute, preventing the condensed water from dripping on the impeller of the fan and entering the duct under the rotation of the impeller.

[0011] In some embodiments, the diversion member is a flanging formed downward at the edge of the diversion opening, making the structure of the diversion member simple and easy to implement.

[0012] In some embodiments, on the cross-section of the diversion opening, the lower edge of the flanging is connected to the upper edge of the air outlet of the volute, or part of the flanging is located inside the volute, so as to better ensure that the condensed water flows along the inner wall of the flanging to the inner wall of the volute, and then flows to the bottom of the volute under the action of gravity.

[0013] In some embodiments, the above integrated dry fan coil unit further includes: a partition plate, which is arranged in the up-down direction, the upper edge of the partition plate is sealingly connected to the lower surface of the diversion plate, the lower edge of the partition plate is sealingly connected to the inner wall of the bottom plate of the housing, the housing and the partition plate form the air duct in a U shape with the opening facing downwards, the outer peripheral edge of the diversion plate is sealingly connected to the side wall of the housing, the diversion plate is further provided with a diversion opening, the return air opening, the diversion opening and the fan are all located on the first side of the partition plate, the air supply opening and the diversion opening are both located on the second side of the partition plate, and the air supply opening is located below the diversion plate, and the first side and the second side are oppositely arranged, so that the flow direction of the air after being heat-exchanged by the heat exchange coil is changed, which is beneficial to reducing the total height of the above integrated dry fan coil unit.

[0014] In some embodiments, the above integrated dry fan coil unit further includes: an anti-overflow member, which is arranged at the diversion opening and on the side of the diversion plate close to the heat exchange coil, and the anti-overflow member can prevent the condensed water generated on the surface of the heat exchange coil from flowing out through the diversion opening and affecting the user experience.

[0015] In some embodiments, the anti-overflow member is a flanging formed upwards at the edge of the diversion opening, so that the structure of the anti-overflow member is simple and easy to implement.

[0016] In some embodiments, the housing is further provided with a fresh air inlet, and the partition plate, the part of the diversion plate located on the second side of the partition plate, and the part of the housing located between the second side of the partition plate and the diversion plate together enclose a mixing chamber, the fresh air inlet is located on the mixing chamber, and the fresh air inlet is used to guide the fresh air of the fresh air system into the mixing chamber to realize the integration of the fresh air system and the dry fan coil unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1It is a schematic structural diagram of a dry fan coil unit in the prior art;

[0019] Figure 2 It is one of the schematic structural diagrams of the integrated dry fan coil unit according to an embodiment of the present application;

[0020] Figure 3 It is the second schematic structural diagram of the integrated dry fan coil unit according to an embodiment of the present application;

[0021] Figure 4 It is Figure 3 the sectional view of the A-A section in

[0022] Figure 5 the schematic structural diagram of the flow guide plate.

[0023] Reference numerals:

[0024] 01 - Fan; 02 - Heat exchange coil; 03 - Condensate water sump; 04 - Condensate water system pipeline; 1 - Housing; 101 - Return air inlet; 102 - Supply air outlet; 103 - Fresh air inlet; 104 - Return air chamber; 105 - Heat exchange chamber; 106 - Mixed air chamber; 2 - Fan; 3 - Heat exchange coil; 301 - Water inlet; 302 - Water outlet; 4 - Flow guide plate; 400 - Flow guide opening; 401 - Air guide opening; 5 - Flow guiding member; 6 - Partition board; 7 - Hoisting bracket; 8 - Anti-overflow member; 9 - Grille; 10 - Filter device; 11 - Insulation layer; 12 - Junction box; 200 - Ceiling. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "plural" is two or more.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Refer to Figures 2 to 5 , the integrated dry fan coil unit provided by the embodiment of this application includes: a housing 1, a duct is formed inside the housing 1, and an air return opening 101 and an air supply opening 102 communicating with the duct are provided on the housing 1; a fan 2, the fan 2 is installed inside the duct; a heat exchange coil 3, the heat exchange coil 3 is installed inside the duct and between the fan 2 and the air supply opening 102; a deflector 4, the deflector 4 is installed inside the housing 1, the fan 2 is located below the deflector 4, the heat exchange coil 3 is located above the deflector 4, the fan 2 includes a volute and an impeller installed inside the volute, the air outlet of the volute faces upward, and the deflector 4 can guide the condensed water generated on the surface of the heat exchange coil 3 into the volute.

[0030] In the embodiment of this application, the heat exchange coil 3 is located above the deflector 4, that is, the heat exchange coil 3 is installed in the upper space of the housing 1. When the wet load in the indoor space fluctuates and causes the wet load in the indoor space to increase in a short time, a small amount of condensed water generated on the surface of the heat exchange coil 3 will flow downward under the action of gravity and accumulate on the upper surface of the deflector 4. Subsequently, the accumulated condensed water will flow into the volute of the fan 2 under the guidance of the deflector 4. In the embodiment of this application, by using the internal space of the volute to store a small amount of condensed water generated on the surface of the heat exchange coil 3, the condensed water is temporarily stored in the volute, and the condensed water can be evaporated by the dry air sucked by the fan 2 after the wet load in the indoor space returns to normal. In the embodiment of this application, the condensed water sump and the condensed water system pipeline in the prior art are cancelled, that is, the above integrated dry fan coil unit in this application does not need to install the condensed water system pipeline during the installation process, thereby simplifying the installation steps and installation costs of the integrated dry fan coil unit.

[0031] Among them, Figure 2 and Figure 3 the direction indicated by the arrow is the air flow direction.

[0032] In some embodiments, a diversion port 400 is formed on the flow deflector 4. The diversion port 400 is disposed opposite to the air outlet of the volute. In the horizontal projection of the diversion port 400, the diversion port 400 is located inside the air outlet of the volute, so as to better ensure that all the condensed water generated on the surface of the heat exchange coil 3 flows into the volute. At the same time, it can also avoid the problem that the diversion port 400 and the air outlet of the volute cannot be disposed opposite to each other during the installation process due to manufacturing errors and installation errors, thereby improving the diversion effect of the flow deflector 4.

[0033] It should be noted that the above-mentioned fan 2 further includes a motor. There are two volutes. The motor is installed between the two volutes. The air outlets of the two volutes face upward. A wind wheel is installed in each volute, that is, there are also two wind wheels. The motor can drive the two wind wheels to rotate simultaneously, that is, the air outlets of the two volutes can discharge air simultaneously. By setting the above-mentioned fan 2, the return air volume of the indoor air can be increased.

[0034] For the embodiment in which the above-mentioned fan 2 further includes a motor, there are two volutes, the motor is installed between the two volutes, the air outlets of the two volutes face upward, and a wind wheel is installed in each volute, that is, there are also two wind wheels, the corresponding diversion ports 400 on the above-mentioned flow deflector 4 also have two, as Figure 4 and Figure 5 shown.

[0035] Among them, the two diversion ports 400 can be set in the same way or in different ways.

[0036] In order to install the integrated dry fan coil unit, a ceiling 200 is provided on the ceiling of the room. The entire integrated dry fan coil unit housing 1 is installed in the ceiling 200. Since the height between the ceiling 200 and the ceiling is limited, in a place where the height between the ceiling 200 and the ceiling is relatively small, the height of the above-mentioned housing 1 should not be set too high. Therefore, in the implementation of this application, the above-mentioned flow deflector 4 is horizontally arranged, which is beneficial to reduce the height of the housing 1 and improve the net height of the room.

[0037] Of course, the above-mentioned flow deflector 4 can also include a first part and a second part arranged horizontally. Among them, one side of the second part is connected to the first part, and the other side of the second part is inclined downward, so that the condensed water can flow downward better under the guidance of the second part.

[0038] Refer to Figure 2 and Figure 3, the above integrated dry fan coil unit further includes: a deflector 5, which is arranged at the deflector opening 400 and on the side of the deflector plate 4 close to the fan 2. The deflector is used to guide the condensed water on the deflector plate 4 to the inner wall of the volute, preventing the condensed water from dripping onto the impeller of the fan 2 and entering the air duct under the rotation of the impeller, resulting in moisture in the air sent out by the air wheel. The air sent out through the air outlet 102 of the housing 1 has a relatively high humidity, which is not conducive to improving the user experience.

[0039] Among them, the above deflector 5 is a flanging formed downward at the edge of the deflector opening 400, making the structure of the deflector 5 simple and easy to implement. Usually, the flanging and the deflector plate 4 are made by an integral molding process, which can prevent air leakage and water leakage at the connection between the flanging and the deflector plate 4, and thus improve the reliability of the integrated dry fan coil unit.

[0040] Alternatively, a deflector hose is arranged at the deflector opening 400, with one end of the deflector hose sealed to the deflector opening 400, and the other end of the deflector hose extending into the volute and being arranged in contact with the interior of the volute. Since the deflector hose can be set to different lengths according to actual situations, the accuracy requirements for the installation accuracy of the above fan 2, the installation accuracy of the deflector plate 4, and the opening position of the deflector opening 400 can be reduced.

[0041] In some embodiments, on the cross-section of the deflector opening 400, the lower edge of the flanging is connected to the upper edge of the air outlet of the volute, or part of the flanging is located inside the volute, so as to better ensure that the condensed water flows along the inner wall of the flanging to the inner wall of the volute, and then flows to the bottom of the volute under the action of gravity.

[0042] Since the heat exchanger is installed in the upper space of the housing 1, the air after heat exchange by the heat exchange coil 3 needs to be sent into the room through the air outlet 102 of the ceiling 200. The housing 1 is installed above the ceiling 200. Therefore, the air after heat exchange by the heat exchange coil 3 needs to flow downward. Thus, the above integrated dry fan coil unit in the embodiment of the present application further includes: a partition 6, which is arranged in the up-down direction. The upper edge of the partition 6 is hermetically connected to the lower surface of the deflector plate 4, and the lower edge of the partition 6 is hermetically connected to the inner wall of the bottom plate of the housing 1. The housing 1 and the partition 6 form a U-shaped air duct with the opening facing downward. The outer peripheral edge of the deflector plate 4 is hermetically connected to the side wall of the housing 1. A deflector opening 401 is also opened on the deflector plate 4. The air return opening 101, the deflector opening 400 and the fan 2 are all located on the first side of the partition 6, and the air outlet 102 and the deflector opening 401 are both located on the second side of the partition 6, and the air outlet 102 is located below the deflector plate 4. The first side and the second side are oppositely arranged.

[0043] It should be noted that the above partition 6 can be arranged vertically or obliquely, as long as it can separate the air duct between the return air outlet 101 and the diversion outlet 400 from the air duct between the air guiding outlet 401 and the air supply outlet 102.

[0044] To facilitate the installation of the deflector 4, hoisting brackets 7 are provided on two opposite sides of the deflector 4. During the specific installation process, the deflector 4 is hoisted through the hoisting brackets 7 and placed at the required installation position, as Figure 4 shown.

[0045] Ceiling air return vents corresponding to the return air outlet 101 and ceiling air supply vents corresponding to the air supply outlet 102 are provided on the ceiling 200. Common types of the ceiling 200 include a folded ceiling and a flat ceiling. The folded ceiling means that the ceiling air return vent and the ceiling air supply vent are located on different sides of the ceiling. The flat ceiling means that the ceiling air return vent and the ceiling air supply vent are located on the same side of the ceiling. Thus, the above return air outlet 101 and air supply outlet 102 can be arranged on the same surface of the housing 1 or on different surfaces of the housing 1, as Figure 2 and Figure 3 shown.

[0046] Exemplarily, Figure 2 the return air outlet 101 in is arranged on the bottom wall of the housing 1, the air supply outlet 102 is arranged on the side wall of the housing 1. Both the return air outlet 101 and the air supply outlet 102 are located below the deflector 4. The return air outlet 101 is located on the first side of the partition 6, and the air supply outlet 102 is located on the second side of the partition 6. It is applicable to the folded ceiling structure. Figure 3 the return air outlet 101 and the air supply outlet 102 in are both arranged on the bottom wall of the housing 1 and are both located below the deflector 4. The return air outlet 101 is located on the first side of the partition 6, and the air supply outlet 102 is located on the second side of the partition 6. It is applicable to the flat ceiling structure.

[0047] In some embodiments, the above integrated dry fan coil unit further includes: an anti-overflow member 8. The anti-overflow member 8 is arranged at the air guiding outlet 401 and on one side of the deflector 4 close to the heat exchange coil 3. The anti-overflow member 8 can prevent the condensed water generated on the surface of the heat exchange coil 3 from flowing out through the air guiding outlet 401, affecting the user experience.

[0048] Among them, the above anti-overflow member 8 is a flanging formed upward at the edge of the air guiding outlet 401, making the structure of the anti-overflow member 8 simple and easy to implement.

[0049] The value range of the vertical height of the above flanging from the deflector 4 is: 2 mm to 5 mm. Thus, it can not only reduce the resistance of the flanging to the air after heat exchange and reduce the operating noise of the fan coil unit 2, but also effectively prevent the condensed water generated on the surface of the heat exchange coil 3 from flowing out through the air guiding outlet 401.

[0050] Of course, the above anti-overflow member 8 can also be an anti-overflow strip, which is horizontally arranged. The axial direction of the anti-overflow strip is the same as the width direction of the flow guide plate 4. The lower surface of the anti-overflow strip is hermetically connected to the upper surface of the flow guide plate 4. One end of the anti-overflow strip close to the rear side wall of the housing 1 is hermetically connected to the rear side wall of the housing 1, and one end of the anti-overflow strip close to the front side wall of the housing 1 is hermetically connected to the front side wall of the housing 1, so as to prevent the condensed water generated on the surface of the heat exchange coil 3 from flowing out through the air outlet 401 and affecting the user experience.

[0051] The above-mentioned sealed connection can be welding the two together, or achieving the sealed connection between the two through a sealing structure. The specific structure of the above-mentioned sealed connection in the embodiments of the present application is not specifically limited, as long as there is no water leakage and air leakage between the two components that can achieve the sealed connection.

[0052] In some embodiments, a fresh air inlet 103 is further provided on the housing 1. The partition plate 6, the part of the flow guide plate 4 located on the second side of the partition plate 6, and the part of the housing 1 located between the second side of the partition plate 6 and the flow guide plate 4 together enclose a mixing chamber 106. The fresh air inlet 103 is located on the mixing chamber 106, and the fresh air inlet 103 is used to guide the fresh air of the fresh air system into the mixing chamber 106.

[0053] However, in the prior art, the air outlets of the integrated dry fan coil unit and the fresh air system are respectively connected to the mixing box 05 through different air supply pipes, and after being mixed in the mixing box 05, they are discharged, as Figure 1 shown. In the embodiments of the present application, the above-mentioned setting does not require a separate mixing box to mix the air output of the fresh air system and the air output of the dry fan coil unit. The return air box is directly integrated inside the housing 1, realizing the integration of the fresh air system and the dry fan coil unit. Moreover, in the above-mentioned setting of the present application, the pipeline between the air outlet of the integrated dry fan coil unit and the mixing box is saved, thereby reducing the installation cost of the integrated dry fan coil unit, and also avoiding the problem of air leakage easily occurring at the connection of the above-mentioned pipeline.

[0054] Among them, in the embodiments of the present application, the housing 1 is divided into three regions by the flow guide plate 4 arranged in the left-right direction and the partition plate 6 arranged in the up-down direction, namely the return air chamber 104, the heat exchange chamber 105 and the mixing chamber 106. The fan 2 is installed in the mixing chamber 104, the heat exchange coil is installed in the heat exchange chamber 105, the mixing chamber 104 and the heat exchange chamber 105 are connected through a diversion port 400, the heat exchange chamber 105 and the mixing chamber 106 are connected through an air outlet 401, and the mixing chamber 104 and the mixing chamber 106 are not connected to each other, as Figure 2 and Figure 3 shown.

[0055] Refer to Figure 4, the above heat exchange coil 3 is a 4 - stroke heat exchange coil 3. The number of rows of the heat exchange coil 3 can be one row or multiple rows, and the number of strokes of the heat exchange coil 3 is an even number. This can ensure that the water inlet 301 and the water outlet 302 of the heat exchange coil 3 are on the same side, making the connection between the heat exchange coil 3 and the water supply device simple and convenient.

[0056] Furthermore, in order to improve the heat exchange efficiency between the heat exchange coil 3 and the air, the heat exchange between the above heat exchange coil 3 and the air is counter - current heat exchange, that is, the water outlet 302 is arranged close to the air guide port 400, and the water inlet 301 is arranged close to the air inlet 401.

[0057] Based on the above - mentioned embodiment, a fresh air inlet 103 is also provided on the housing 1 of the present application. The partition 6, the part of the air guide plate 4 on the second side of the partition 6, and the part of the housing 1 between the second side of the partition 6 and the air guide plate 4 together enclose a mixing air chamber 106. The fresh air inlet 103 is located on the mixing air chamber 106. For the embodiment where the fresh air inlet 103 is used to guide the fresh air of the fresh air system into the mixing air chamber 106, during specific installation, it is only necessary to connect the air supply port of the fresh air system with the fresh air inlet 103 on the housing 1, and then connect the water outlet of the water supply device with the water inlet 301 of the heat exchange coil 3 and connect the water inlet of the water supply device with the water outlet 302 of the heat exchange coil 3, which is convenient for installation.

[0058] In some embodiments, grilles 9 are installed on both the above ceiling air return inlet and the ceiling air outlet. Setting the grille 9 at the ceiling air return inlet can prevent impurities in the air from entering the air duct. Setting the grille 9 at the ceiling air outlet can change the air supply direction of the air supply port 102 and avoid the direct blowing of the air on people.

[0059] In addition, in order to increase the air velocity of the air supply port 102, the area of the above air return inlet 101 is larger than the area of the air supply port 102. This makes the air pressure increase when the air is sent out through the air supply port 102, and thus improves the air supply velocity of the integrated dry fan - coil unit.

[0060] In some embodiments, a filtering device 10 is provided on the leeward side of the grille 9 at the above ceiling air return inlet, and / or a filtering device 10 is provided on the windward side of the grille 9 at the above ceiling air outlet to filter particulate matter, gaseous pollutants, etc. in the air and achieve the effect of purifying the air.

[0061] The above purification device includes a filter screen and a filter screen support. The filter screen is installed in the filter screen support, and the filter screen support can fix and support the above filter screen, preventing the filter screen from deforming under the influence of the air volume.

[0062] Among them, the above filter screen can be any one or several of a coarse - effect filter screen, a high - efficiency air filter, and an IFD filter.

[0063] In some embodiments, a thermal insulation layer 11 is provided in the air duct between the air outlet of the volute and the air supply outlet 102, so as to prevent the air heated by the heat exchange coil 3 from exchanging heat with the outside air and reduce the heat exchange efficiency of the integrated dry fan coil unit.

[0064] The above-mentioned thermal insulation layer 11 can be made of sponge or other thermal insulation materials.

[0065] In some embodiments, a junction box 12 is further provided on the above-mentioned housing 1. The junction box 12 is arranged outside the housing 1, so that when a wiring fault occurs between electrical components, it is convenient to repair and maintain the circuit.

[0066] In the description of this specification, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0067] As described above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all of them should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An integrated dry fan coil unit, characterized in that: include: A housing having an air duct formed therein, and a return air port and an air supply port connected to the air duct being formed on the housing; the area of the return air port being larger than the area of the air supply port; a fan, the fan being installed in the air duct; a heat exchange coil, the heat exchange coil being installed in the air duct and located between the fan and the air outlet; A guide plate is installed in the shell, the fan is located below the guide plate, the heat exchange coil is located above the guide plate, the fan includes a volute and a wind wheel installed in the volute, the air outlet of the volute faces upward, and the guide plate can guide the condensed water generated on the surface of the heat exchange coil into the volute.

2. The integrated dry fan coil unit according to claim 1, characterized in that: The guide plate is provided with a guide port, which is arranged opposite to the air outlet of the volute. In a horizontal projection of the guide port, the guide port is located on the inner side of the air outlet of the volute.

3. The integrated dry fan coil unit according to claim 2, characterized in that: The guide plate is arranged horizontally.

4. The integrated dry fan coil unit according to claim 2, characterized in that: Also includes: A flow guide is provided at the flow guide port and is located on a side of the flow guide plate close to the fan, and is used to guide the condensed water on the flow guide plate to the inner wall of the volute.

5. The integrated dry fan coil unit according to claim 4, characterized in that: The guide member is a flange formed downward at the edge of the guide port.

6. The integrated dry fan coil unit according to claim 5, characterized in that: In the cross section of the guide port, the lower edge of the flange is connected to the upper edge of the air outlet of the volute, or part of the flange is located inside the volute.

7. The integrated dry fan coil unit according to any one of claims 2 to 6, characterized in that: Also includes: The partition is arranged in the up and down directions, the upper edge of the partition is sealed with the lower surface of the guide plate, the lower edge of the partition is sealed with the inner wall of the bottom plate of the shell, the shell and the partition form a U-shaped air duct with the opening facing downward, the outer edges of the guide plate are sealed with the side walls of the shell, and an air guide port is also provided on the guide plate, the return air port, the guide port and the fan are all located on the first side of the partition, the supply air port and the guide port are both located on the second side of the partition, and the supply air port is located below the guide plate, and the first side and the second side are arranged opposite to each other.

8. The integrated dry fan coil unit according to claim 7, characterized in that: Also includes: An anti-overflow component is arranged at the air guide port and is located on a side of the guide plate close to the heat exchange coil. The anti-overflow component can prevent condensed water generated on the surface of the heat exchange coil from flowing out of the air guide port.

9. The integrated dry fan coil unit according to claim 8, characterized in that: The anti-overflow component is a flange formed upward at the edge of the air guide port.

10. The integrated dry fan coil unit according to claim 7, characterized in that: A fresh air inlet is also provided on the shell, and the partition, the part of the guide plate located on the second side of the partition, and the part of the shell located between the second side of the partition and the guide plate together form an air mixing chamber. The fresh air inlet is located on the air mixing chamber, and the fresh air inlet is used to guide the fresh air of the fresh air system into the air mixing chamber.

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