Fresh air fan coil for kitchen

Abstract

The utility model discloses a fresh air fan coil for a kitchen. The fresh air fan coil comprises a fresh air filter, a fresh air valve; a surface air cooler; a fan; a fresh air inlet and an air supply outlet are formed in the machine shell, a fresh air flow path is formed between the fresh air inlet and the air supply outlet, and a fresh air filter, a fresh air valve, a surface air cooler and a draught fan are sequentially arranged on the fresh air flow path in the flowing direction of fresh air flow; the first tray is arranged at the bottom of the surface air cooler, the bottom of the first tray gradually inclines downwards in the flowing direction of fresh air flow, a first water outlet is formed in the lower position of the first tray, a water drainage pipe is arranged at the first water outlet and penetrates through the bottom of the machine shell, and a first cover plate is arranged on one side of the top of the first tray. The first cover plate is arranged on the side, close to the fan, of the first tray. The surface air cooler has the function of adjusting the air supply temperature, and the environment in a kitchen can be prevented from being disturbed.

Description

Technical Field

[0001] The utility model relates to the field of fan coil units. More specifically, the utility model relates to a fresh air fan coil unit for kitchens. Background Art

[0002] In a green building residential system, due to the good airtightness indoors, when the range hood is turned on, the indoor air will be quickly exhausted, resulting in indoor pressure loss. Then, the sewer exhaust gas will be drawn into the room, affecting the indoor air quality. At the same time, the sewer bacteria will also be drawn into the room, posing a potential health hazard to the residents. In some green building kitchens, make-up air fans are installed. When the range hood is operating, the residents will turn on the make-up air fan to supply air to the room. At this time, the make-up air fan directly draws outdoor air into the room. In summer, it is high-temperature and high-humid air, and in winter, it is low-temperature air. When the make-up air fan operates, the outdoor air will disrupt the indoor environment. In severe cases, condensation will occur indoors in summer, and indoor temperature loss will occur in winter. The surface cooler has the function of adjusting the supply air temperature. However, when low-temperature medium flows into the surface cooler, condensate will accumulate at the water tray. Due to the large air volume and wind speed of the fan, the condensate will gather on the air supply side of the water tray and cannot be discharged. When the water volume accumulates to a certain extent, the phenomenon of condensate overflow will occur, or the condensate will backflow into the water tray and overflow when the machine stops. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a fresh air fan coil unit for kitchens. Fresh air enters the casing through the fresh air inlet, and then passes through the fresh air filter, fresh air damper, and surface cooler, and is sent into the room by the fan. The surface cooler has the function of adjusting the supply air temperature and can avoid disturbing the environment in the kitchen. By setting the first tray, making the bottom of the first tray inclined, and setting a first cover plate on the top of the first tray, as the condensate accumulates, the pressure at the accumulation point increases. Under the action of gravity and wind pressure, the condensate flows downward along the inclined surface at the bottom of the first tray into the drain pipe and is discharged through the drain pipe, which can achieve the effect of preventing a large amount of condensate from accumulating and backflowing when the machine stops.

[0004] To achieve these objects and other advantages of the utility model, there is provided a fresh air fan coil unit for kitchens, including:

[0005] A fresh air filter;

[0006] A fresh air damper;

[0007] A surface cooler;

[0008] A fan;

[0009] A casing, on which there are a fresh air inlet and an air supply outlet. A fresh air flow path is formed between the fresh air inlet and the air supply outlet. Along the fresh air flow direction on the fresh air flow path, the fresh air filter, the fresh air damper, the surface cooler, and the fan are sequentially arranged;

[0010] The first tray is arranged at the bottom of the finned tube cooler. The bottom of the first tray slopes gradually downward along the flowing direction of the fresh air current, and a first drain opening is arranged at its lower position. A drain pipe is arranged at the first drain opening. The drain pipe passes through the bottom of the casing. One side of the top of the first tray is provided with a first cover plate, and the first cover plate is arranged on the side of the first tray close to the fan.

[0011] Preferably, in the fresh air fan coil unit for kitchen, it further includes:

[0012] A return air damper;

[0013] A return air filter screen;

[0014] A casing, which is hollow inside and open at both ends. One end of the casing forms a return air inlet, and the other end is connected to one side of the casing and communicates with the area in the casing between the fresh air damper and the finned tube cooler. A return air flow path is formed in the casing, and the return air damper and the return air filter screen are sequentially arranged along the flowing direction of the return air current on the return air flow path.

[0015] Preferably, in the fresh air fan coil unit for kitchen, it further includes:

[0016] A second tray is arranged at the bottom of the return air filter screen. The bottom of the second tray slopes gradually downward along the flowing direction of the return air current, and a second drain opening is arranged at its lower position. One side of the top of the second tray is provided with a second cover plate, and the second cover plate is arranged on the side of the second tray close to the casing;

[0017] A cleaning device, which includes a plurality of spray heads, a delivery pipe and a pump. The plurality of spray heads are distributed on both sides of the top of the return air filter screen and are all communicated with a cleaning liquid inlet through the delivery pipe. A pump is arranged on the delivery pipe, and the plurality of spray heads are located above the second tray.

[0018] Preferably, in the fresh air fan coil unit for kitchen, the fresh air damper is an electric damper, and the electric actuator of the fresh air damper is connected to a controller.

[0019] Preferably, in the fresh air fan coil unit for kitchen, each blade of the fresh air damper is composed of a main body part and a sealing part. Sealing baffles are arranged around the perimeter of each blade of the fresh air damper. For any one blade, the sealing part is arranged circumferentially around the main body part, and when the blade is closed, the blade fits tightly with the sealing baffle.

[0020] Preferably, in the fresh air fan coil unit for kitchen, it further includes:

[0021] Two sets of anti - splash louvers are arranged on both sides of the return air filter, and each nozzle is located between the two sets of anti - splash louvers.

[0022] Preferably, in the fresh air fan - coil unit for kitchen, the anti - splash louvers are electric louvers, and the electric actuator of the anti - splash louvers is connected to the controller. The utility model has at least the following beneficial effects:

[0023] In the utility model, fresh air enters the casing through the fresh air inlet, and then passes through the fresh air filter, fresh air damper, and surface cooler, and is sent into the room by the fan. The return air enters the casing through the return air inlet, and then passes through the return air damper, return air filter, and surface cooler, and is sent into the room by the fan. The surface cooler has the function of adjusting the supply air temperature and can avoid disturbing the environment in the kitchen. By setting the first tray, making the bottom of the first tray inclined, and setting the first cover plate on the top of the first tray, as the condensate water accumulates, the pressure at the accumulation point increases, and the condensate water flows downward along the inclined surface at the bottom of the first tray into the drain pipe under the action of gravity and wind pressure, and is discharged through the drain pipe, which can achieve the effect of preventing a large amount of condensate water from accumulating and back - flowing during shutdown.

[0024] In the utility model, by setting a cleaning device at the return air filter, the problem of oil stain accumulation inside the equipment is solved. The cleaning sewage flows into the second tray and is discharged through the second drain port. During the cleaning process, the anti - splash louvers are closed, which can prevent the cleaning liquid from splashing onto other components.

[0025] Other advantages, objectives, and features of the utility model will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic plan view of a fresh air fan - coil unit for kitchen according to an embodiment of the utility model;

[0027] Figure 2 is a schematic three - dimensional view of a fresh air fan - coil unit for kitchen according to an embodiment of the utility model;

[0028] Figure 3 is a schematic internal structure view of a casing according to an embodiment of the utility model;

[0029] Figure 4 is a schematic structure view of a fresh air damper according to an embodiment of the utility model;

[0030] Figure 5 is a schematic structure view of a blade according to an embodiment of the utility model;

[0031] Figure 6It is a schematic structural view when the blade is closely attached to the sealing baffle according to an embodiment of the present utility model;

[0032] Figure 7 It is a schematic structural view of the first tray according to an embodiment of the present utility model. Specific embodiments

[0033] The following further describes the present utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0034] It should be noted that in the description of the present utility model, the orientation or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0035] As Figures 1 to 7 shown, the present utility model provides a fresh air fan coil unit for a kitchen, including:

[0036] A fresh air filter 1;

[0037] A fresh air damper 2;

[0038] A surface cooler 3;

[0039] A fan 4;

[0040] A casing 5, on which a fresh air inlet and an air supply outlet are provided. A fresh air flow passage is formed between the fresh air inlet and the air supply outlet. The fresh air filter 1, the fresh air damper 2, the surface cooler 3 and the fan 4 are sequentially arranged along the flow direction of the fresh air on the fresh air flow passage;

[0041] A first tray 6, which is arranged at the bottom of the surface cooler 3. The bottom of the first tray 6 gradually slopes downward along the flow direction of the fresh air, and a first drain port 601 is provided at its lower position. This is beneficial for the discharge of condensed water. A drain pipe is provided at the first drain port 601, and the drain pipe passes through the bottom of the casing 5. One side of the top of the first tray 6 is provided with a first cover plate 602, and the first cover plate 602 is arranged on the side of the first tray 6 close to the fan 4. In summer, the surface cooler 3 has a partial dehumidification function. The condensed water stored in the first tray 6 is discharged to the sewer through the first drain port 601.

[0042] When the fresh air fan coil unit for kitchen provided by this solution is in use, fresh air enters the casing 5 through the fresh air inlet, and then after passing through the fresh air filter 1, the fresh air damper 2, and the surface cooler 3, it is sent into the room by the fan 4. The surface cooler 3 is supplied with ceiling cold water in summer and ceiling hot water in winter, having the function of adjusting the supply air temperature and being able to avoid disturbing the environment in the kitchen.

[0043] When the conventional fresh air fan or fan coil unit operates in summer, low-temperature medium flows into the surface cooler 3, and condensed water will accumulate at the water tray. Due to the large air volume and air speed of the fan 4, the condensed water gathers on the air supply side of the water tray and cannot be discharged. When the water volume accumulates to a certain extent, the phenomenon of condensed water overflow will occur, or when the unit stops, the condensed water will backflow into the water tray and overflow. To avoid this kind of phenomenon, a first cover plate 602 is installed on the upper part of the air supply side of the first tray 6, and at the same time, its bottom is inclined, and a drain pipe is set at the lower position of its bottom. In this way, the condensed water gathers under the first cover plate 602 under the action of the wind. As the condensed water gathers, the pressure at the gathering place increases. Under the action of gravity and wind pressure, the condensed water flows downward along the inclined surface of the bottom of the first tray 6 into the drain pipe, and finally is discharged into the sewer through the drain pipe, achieving the effect of preventing a large amount of condensed water from gathering and backflow during shutdown.

[0044] The fan coil unit provided by this solution is composed of a fresh air filter 1, a fresh air damper 2, a surface cooler 3, a first tray 6, a fan 4, etc., and is installed in a horizontal ceiling-mounted manner.

[0045] In another solution, in the fresh air fan coil unit for kitchen, it further includes:

[0046] A return air damper 7;

[0047] A return air filter screen 8;

[0048] A casing 9, which is hollow inside and open at both ends. One end of the casing 9 forms a return air inlet, and the other end is connected to one side of the casing 5 and communicates with the area between the fresh air damper 2 and the surface cooler 3 in the casing 5. A return air flow path is formed in the casing 9, and the return air damper 7 and the return air filter screen 8 are sequentially arranged along the flowing direction of the return air flow on the return air flow path.

[0049] After the return air enters the casing 9 through the return air inlet, it then passes through the return air damper 7, the return air filter screen 8, and the surface cooler 3, and is sent into the room by the fan 4.

[0050] When the fan coil unit is turned on and in the fresh air mode, the return air damper 7 is closed, and fresh air enters the fan coil unit.

[0051] When the fan coil unit is turned on and in the return air mode, the fresh air damper 2 is closed, and the return air damper 7 is opened.

[0052] When the fan coil unit is closed, both the fresh air damper 2 and the return air damper 7 are closed.

[0053] In another solution, the fresh air fan coil unit for kitchen further includes:

[0054] A second tray 10, which is arranged at the bottom of the return air filter screen 8. The bottom of the second tray 10 slopes gradually downward along the flowing direction of the return air current, and a second drain port 101 is arranged at its lower position, which is conducive to the discharge of the cleaning liquid. One side of the top of the second tray 10 is provided with a second cover plate 102, and the second cover plate 102 is arranged on the side of the second tray 10 close to the casing 5;

[0055] A cleaning device 11, which includes a plurality of spray heads, a delivery pipe and a pump. The plurality of spray heads are distributed on both sides of the top of the return air filter screen 8, and are all communicated with the cleaning liquid inlet through the delivery pipe. A pump is arranged on the delivery pipe, and the plurality of spray heads are located above the second tray 10.

[0056] The cleaning liquid is pumped into the spray heads through the delivery pipe, and then the cleaning liquid is sprayed onto both sides of the top of the return air filter screen 8 through the spray heads. After the cleaning liquid dissolves the oil stains, it converges at the second drain port 101 and is discharged through the second drain port 101.

[0057] By arranging the cleaning device 11 at the return air filter screen 8, the problem of oil stain accumulation inside the equipment is solved. The sewage for cleaning flows into the second tray 10 and is discharged through the second drain port 101.

[0058] The return air filter screen 8 is made of a waterproof material to avoid damage during the cleaning process. The automatic cleaning device 11 is composed of a cleaning liquid inlet, a cleaning liquid delivery pipe, a cleaning liquid water pump, cleaning liquid spray heads, etc. The system records the running time of the return air. After reaching the set time, the automatic cleaning function of the return air filter screen 8 is automatically turned on. The cleaning water pump extracts the external cleaning liquid and sprays it onto the return air filter screen 8 through the cleaning liquid spray heads. After dissolving the oil stains, it converges into the second tray 10 and is discharged through the second drain port 101.

[0059] In another solution, in the fresh air fan coil unit for kitchen, the fresh air damper 2 is an electric damper, and the electric actuator of the fresh air damper 2 is connected to the controller. The blades of the electric damper are opened or closed under the action of the electric actuator and the connecting rod. This is the prior art, and other forms of electric dampers can also be used.

[0060] When the fan coil unit is turned on and in the fresh air mode, the fresh air damper 2 opens its blades under the action of its electric actuator and connecting rod, and fresh air enters the fan coil unit; when the fan 4 stops, the blades of the fresh air damper 2 close under the action of the electric actuator and connecting rod. Since the indoor of the residential green building system maintains a slightly positive pressure state, the blades of the fresh air damper 2 are closely attached to the valve body sealing baffle 203 under the action of the positive pressure, which can improve the sealing effect.

[0061] In another solution, in the fresh air fan coil unit for the kitchen, each blade of the fresh air damper 2 is composed of a main body part 201 and a sealing part 202, and sealing baffles 203 are arranged around the periphery of each blade of the fresh air damper 2; for any one blade, the sealing part 202 is arranged circumferentially around the main body part 201, and when the blade is closed, the blade is closely attached to the sealing baffle 203.

[0062] A rotating shaft is arranged along the long side direction at the upper part of the blade, so that the blade can freely rotate around the rotating shaft. At the same time, the rotating shaft of the blade deviates from the geometric center, so that the blade naturally droops in the closed state. All the blades are connected by connecting rods, so that the blades can move simultaneously and at the same angle (this is the prior art, and other forms of electric dampers can also be used as long as the blades can move simultaneously and at the same angle under the control of the controller). The blade is composed of a central metal main body part 201 and an edge sealing part 202 (such as rubber material). The central metal main body part 201 plays a supporting role to prevent the blade from deforming, and the edge sealing part 202 plays a sealing role to prevent air leakage. Except for the blade, sealing baffles 203 are arranged around each blade area of the main body part 201 of the fresh air damper 2, which can be closely attached to the edge sealing part 202 of the blade to improve the valve sealing performance.

[0063] In another solution, in the fresh air fan coil unit for the kitchen, it further includes:

[0064] Two groups of anti-splash louvers 12, which are arranged on both sides of the return air filter screen 8, and each spray head is located between the two groups of anti-splash louvers 12.

[0065] During the operation of the fan coil unit, the anti-splash louvers 12 are fully opened to reduce the return air resistance. In the cleaning mode, the anti-splash louvers 12 are fully closed to prevent the cleaning liquid from splashing onto other components.

[0066] In another solution, in the fresh air fan coil unit for the kitchen, the anti-splash louvers 12 are electric louvers, and the electric actuator of the anti-splash louvers 12 is connected to the controller.

[0067] During the operation of the fan coil unit, the anti-splash louver 12 is fully opened under the action of its electric actuator to reduce the return air resistance. In the cleaning mode, the anti-splash louver 12 is fully closed under the action of its electric actuator to prevent the cleaning liquid from splashing onto other components.

[0068] Although the embodiments of the present invention have been disclosed above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A fresh air fan coil unit for kitchen, characterized in that: include: Fresh air filter; Fresh air damper; Surface cooler; Fan; A housing, on which a fresh air inlet and an air outlet are provided, a fresh air flow passage is formed between the fresh air inlet and the air outlet, and the fresh air filter, the fresh air valve, the surface cooler and the fan are sequentially arranged on the fresh air flow passage along the flow direction of the fresh air flow; A first tray is arranged at the bottom of the surface cooler, the bottom of the first tray is gradually inclined downward along the flow direction of the fresh air flow, and a first drain port is arranged at a lower position, a drain pipe is arranged at the first drain port, and the drain pipe passes through the bottom of the casing, and a first cover plate is arranged on one side of the top of the first tray, and the first cover plate is arranged on a side of the first tray close to the fan.

2. The fresh air fan coil unit for kitchen according to claim 1, characterized in that: Also includes: Return air damper; Return air filter; The shell is hollow inside and open at both ends. One end of the shell forms a return air inlet, and the other end is connected to one side of the casing and communicates with the area between the fresh air valve and the surface cooler in the casing. A return air flow passage is formed in the shell, and the return air valve and the return air filter are sequentially arranged on the return air flow passage along the flow direction of the return air flow.

3. The fresh air fan coil unit for kitchen according to claim 2, characterized in that: Also includes: A second tray is arranged at the bottom of the return air filter, the bottom of the second tray is gradually inclined downward along the circulation direction of the return air flow, and a second drain port is arranged at a lower position thereof, a second cover plate is arranged on one side of the top of the second tray, and the second cover plate is arranged on a side of the second tray close to the casing; The cleaning device includes a plurality of nozzles, a delivery pipe and a pump. The plurality of nozzles are distributed on both sides of the top of the return air filter and are connected to the cleaning liquid inlet through the delivery pipe. The delivery pipe is provided with a pump. The plurality of nozzles are located above the second tray.

4. The fresh air fan coil unit for kitchen according to claim 1, characterized in that: The fresh air valve is an electric air valve, and the electric actuator of the fresh air valve is connected to the controller.

5. The fresh air fan coil unit for kitchen according to claim 4, characterized in that: Each blade of the fresh air valve is composed of a main part and a sealing part. A sealing baffle is arranged around each blade of the fresh air valve. For any blade, the sealing part is arranged circumferentially around the main part. When the blade is closed, the blade fits tightly against the sealing baffle.

6. The fresh air fan coil unit for kitchen according to claim 3, characterized in that: Also includes: Two sets of anti-splash louvers are arranged on both sides of the return air filter, and each nozzle is located between the two sets of anti-splash louvers.

7. The fresh air fan coil unit for kitchen according to claim 6, characterized in that: The anti-splashing shutter is an electric shutter, and the electric actuator of the anti-splashing shutter is connected to a controller.

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