Fan coil unit, air conditioner and humidification control method thereof

Abstract

The present application relates to the technical field of air conditioning, and in particular to a fan coil unit, an air conditioner and a humidification control method thereof, wherein the fan coil unit comprises a fan assembly, a surface cooler assembly and a water distribution assembly, an air supply space is formed between the fan assembly and the surface cooler assembly, and the airflow delivered by the fan assembly enters the surface cooler assembly through the air supply space; the water distribution assembly comprises a water storage tank and a water distribution hole connected to the water storage tank, the water storage tank is connected to a chilled water source in a refrigeration system, and the water entering the water storage tank enters the air supply space through the water distribution hole by its own gravity; wherein the airflow delivered by the fan assembly tears the water in the air supply space to form water mist, and the water mist enters the surface cooler assembly along with the airflow, the fan coil unit can realize humidification of the air supply, and at the same time has a simple structure, which is convenient for later maintenance and overhaul.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a fan coil unit, an air conditioner and a humidification control method thereof. Background Art

[0002] As the terminal indoor unit of central air conditioning, fan coil units mainly adjust the air temperature by transporting refrigerant water of different temperatures through the inlet and outlet pipes of the fan coil units. The existing fan coil unit humidification methods are mainly divided into two categories: one is isenthalpic humidification, including high-pressure micro-mist humidification, wet film humidification, ultrasonic humidification, etc., that is, water spray is atomized into fine water droplets and then heat and moisture exchange is carried out with the air. At this time, the temperature of the water or water droplets and the saturated air layer on their surface is equal to the temperature of the wet air, which is approximately an isenthalpic process. The other is isothermal humidification, including electrode humidification, dry steam humidification, infrared humidification, electric heating humidification, etc.

[0003] Currently, the humidification components of fan coil units involve many structures, which are complex and inconvenient for subsequent maintenance and inspection. Summary of the invention

[0004] The present application provides a fan coil unit, an air conditioner and a humidification control method thereof. The fan coil unit can realize humidification of the supplied air and has a simple structure, which is convenient for subsequent maintenance and inspection.

[0005] In a first aspect, the present application provides a fan coil unit, comprising: a fan assembly and a surface cooler assembly, an air supply space is formed between the fan assembly and the surface cooler assembly, and the airflow delivered by the fan assembly enters the surface cooler assembly through the air supply space; and a water distribution assembly, the water distribution assembly has a water storage tank and a water distribution hole connected to the water storage tank, the water storage tank is connected to a chilled water source in a refrigeration system, and the water entering the water storage tank enters the air supply space through the water distribution hole by its own gravity; wherein the airflow delivered by the fan assembly tears the water in the air supply space to form water mist, and the water mist enters the surface cooler assembly along with the airflow.

[0006] In a possible implementation, a plurality of water distribution holes are arranged along a first direction, and the first direction intersects with the direction of the air flow.

[0007] In a possible implementation, the water distribution holes are distributed in a matrix on the water distribution component.

[0008] In a possible implementation, the water distribution assembly is further provided with a water inlet hole, and the water inlet hole is used to introduce an external water source into the water storage tank.

[0009] In a possible implementation, the fan coil unit further includes a connecting component, and the water inlet hole is connected to a water distribution pipeline of the surface cooler component through the connecting component.

[0010] In a possible implementation, the water distribution pipeline includes a water diverter and a water collecting head; the connecting component connects the water diverter and / or the water collecting head.

[0011] In one possible implementation, the connecting component includes: a control valve; a first water diversion pipe, the two ends of which are respectively connected to the water diversion head and the water inlet end of the control valve; a second water diversion pipe, the two ends of which are respectively connected to the water collecting head and the water inlet end of the control valve; and a third water diversion pipe, the two ends of which are respectively connected to the water inlet hole and the water outlet end of the control valve.

[0012] In a possible implementation, the fan coil unit further includes a humidity sensor and a controller. The humidity sensor is used to collect humidity information at an air outlet of the fan coil unit. The controller controls the control valve according to the humidity information collected by the humidity sensor.

[0013] In a possible implementation, the water distribution assembly further includes a guide member disposed in the water storage tank, and the guide member guides water entering the water storage tank through the water inlet hole so that the water in the water storage tank flows toward the water distribution hole.

[0014] In a possible implementation, the water storage tank has a diversion slope, and the water distribution hole includes a first water distribution hole arranged on the diversion slope.

[0015] In a possible implementation, a water baffle is provided on the diversion slope, and the water baffle is provided adjacent to the first water distribution hole, so as to intercept the water on the diversion slope to the first water distribution hole.

[0016] In a possible implementation, the water distribution hole further includes a second water distribution hole disposed at the bottom of the water storage tank.

[0017] In a second aspect, an embodiment of the present application provides an air conditioner, comprising the above-mentioned fan coil unit.

[0018] In the third aspect, an embodiment of the present application provides a humidification control method for the above-mentioned air conditioner, comprising the following steps: determining whether the air conditioner is running in a humidification mode; when the air conditioner is running in a humidification mode, a water distribution component transports water to the air supply space of the fan coil unit so that the airflow tears the water in the air supply space and forms water mist.

[0019] In one possible implementation, the fan coil unit has a water storage tank and a water distribution hole connected to the water storage tank, the water distribution hole is used to guide the water in the water storage tank to the air supply space, the fan coil unit also includes a humidity sensor, a connecting component and a controller, the water distribution pipeline of the surface cooler component in the fan coil unit transports water to the water storage tank through the connecting component, the humidity sensor is used to collect humidity information at the air outlet of the fan coil unit, and the controller controls the connecting component according to the humidity information; the water distribution component transports water to the air supply space of the fan coil unit including: when the humidity information collected by the humidity sensor is greater than a first humidity value, the controller controls the connecting component to close; when the humidity information collected by the humidity sensor is less than the first humidity value, the controller controls the connecting component to open.

[0020] In one possible implementation, the water distribution pipeline includes a water distribution head and a water collection head, and the connecting component connects the water distribution head and the water collection head; the controller controls the connecting component to open, including: when the humidity information collected by the humidity sensor is less than the second humidity value, the connecting component connects the water distribution head; when the humidity information collected by the humidity sensor is greater than the second humidity value, the connecting component connects the water collection head; wherein the second humidity value is less than the first humidity value.

[0021] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0022] The fan coil unit, air conditioner and humidification control method thereof provided in the embodiment of the present application, when the fan coil unit needs to humidify the supply air, water is transported to the supply air space through the water distribution component, so that the high-speed airflow blown out by the fan component can tear the water in the supply air space and form water mist, and the water mist enters the surface cooler component at the rear and is sent into the room, thereby realizing the humidification of the supply air, directly utilizing the chilled water source with water pressure in the refrigeration system itself, without the need to set up power units such as lifting pumps, and the chilled water source enters the supply air space through the water distribution hole under the action of its own gravity, without the need to set up nozzles, with a simple structure and convenient for later maintenance and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 A schematic diagram of the structure of a fan coil unit provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a fan coil unit provided in an embodiment of the present application with the top cover removed;

[0028] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure from another angle;

[0029] Figure 4A schematic diagram of the structure of a water distribution assembly provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a partially enlarged structure of a connecting component and a water distribution pipeline provided in an embodiment of the present application;

[0031] Figure 6 A control relationship diagram of a controller, a humidity sensor and a control valve provided in an embodiment of the present application;

[0032] Figure 7 A flowchart of a humidification control method provided in an embodiment of the present application;

[0033] Figure 8 A flow chart of a humidification control method provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. Fan assembly;

[0036] 2. Surface cooler assembly; 21. Water distribution pipeline; 211. Water distribution head; 212. Water collection head;

[0037] 3. water distribution assembly; 31. water storage tank; 311. diversion slope; 32. water distribution hole; 321. first water distribution hole; 322. second water distribution hole; 33. water inlet hole; 34. diversion member; 35. water baffle;

[0038] 4. Air supply space;

[0039] 5. Connecting assembly; 51. Control valve; 52. First water diversion pipe; 53. Second water diversion pipe; 54. Third water diversion pipe;

[0040] 6. Humidity sensor;

[0041] 7. Controller;

[0042] 8. Water tray. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0046] The present application provides a fan coil unit, an air conditioner and a humidification control method thereof. The fan coil unit can realize humidification of the supplied air and has a simple structure, which is convenient for subsequent maintenance and inspection.

[0047] Figure 1 A schematic diagram of the structure of a fan coil unit provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a fan coil unit provided in an embodiment of the present application with the top cover removed; Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure from another angle; Figure 4 A schematic diagram of the structure of a water distribution assembly provided in an embodiment of the present application; Figure 5 A schematic diagram of a partially enlarged structure of a connecting component and a water distribution pipeline provided in an embodiment of the present application; Figure 6 A control relationship diagram of a controller, a humidity sensor and a control valve provided in an embodiment of the present application.

[0048] like Figure 1-Figure 6 As shown, an embodiment of the present application provides a fan coil unit, comprising: a fan assembly 1, a surface cooler assembly 2 and a water distribution assembly 3.

[0049] An air supply space 4 is formed between the fan assembly 1 and the surface cooler assembly 2 , and the air flow delivered by the fan assembly 1 enters the surface cooler assembly 2 through the air supply space 4 .

[0050] The water distribution component 3 is connected to the chilled water source in the refrigeration system and is used to transport the chilled water source in the refrigeration system to the air supply space.

[0051] The airflow delivered by the fan assembly 1 tears the water in the air supply space 4 to form water mist, and the water mist enters the surface cooler assembly 2 along with the airflow.

[0052] In the present application, when it is necessary to humidify the supply air, water is transported to the air supply space 4 through the water distribution component 3, so that the high-speed airflow blown out by the fan component 1 can tear the water in the air supply space 4 and form water mist, which enters the surface cooler component 2 at the rear and is sent into the room, thereby realizing the humidification of the supply air. The chilled water source with water pressure in the refrigeration system is directly utilized, and there is no need to set up power units such as lifting pumps. Moreover, the chilled water source enters the air supply space through the water distribution hole under the action of its own gravity. There is no need to set up a nozzle, the structure is simple, and it is convenient for later maintenance and inspection.

[0053] In the related art, the humidification methods of central air conditioners are currently divided into two categories: one is isenthalpic humidification, including high-pressure micro-mist humidification, wet film humidification, ultrasonic humidification, etc., that is, water spray is atomized into fine water droplets and then heat and moisture exchange is carried out with the air. At this time, the temperature of the saturated air layer on the water or water droplets and their surface is equal to the temperature of the wet air, which is approximately an isenthalpic process. The other is isothermal humidification, including electrode humidification, dry steam humidification, infrared humidification, electric heating humidification, etc. At present, the humidification components of fan coil units involve many structures, which are complex and inconvenient for later maintenance and overhaul. At present, central air conditioners generally use the method of collecting condensed water to humidify the air supply, and then spraying water mist on the collected condensed water through a lifting pump and a nozzle to humidify the air supply. Among them, the condensed water itself contains a lot of impurities, which is easy to cause the nozzle to be blocked, and a power unit such as a lifting pump must be set, resulting in a complex structure and inconvenient for later maintenance and overhaul.

[0054] In the embodiment of the present application, water is directly delivered to the air supply space 4 between the fan assembly 1 and the cooler assembly 2, so that the high-speed airflow blown by the fan assembly 1 tears the water in the air supply space 4 and forms water mist, which enters the cooler assembly 2 and is then delivered into the room to humidify the air supply. The involved structures are reduced, the structure is simple, and the installation is reliable. While ensuring that the air supply can be humidified, it is convenient for later maintenance and repair.

[0055] In some embodiments, the water distribution assembly 3 has a water storage tank 31 and a water distribution hole 32 connected to the water storage tank 31 , and the water distribution hole 32 is used to guide the water in the water storage tank 31 to the air supply space 4 .

[0056] In the present application, the water in the water storage tank 31 enters the air supply space 4 through the water distribution hole 32, and the opening and closing of the water distribution hole 32 can be controlled to control whether water is delivered to the air supply space 4. When humidification is required, the water distribution hole 32 is opened, and the water in the water storage tank 31 enters the air supply space 4 through the water distribution hole 32, so that the high-speed airflow tears the water in the air supply space 4, thereby generating water mist to achieve humidification. When humidification is not required, the water distribution hole 32 is closed, and the water in the water storage tank 31 will not enter the air supply space 4, and normal air supply is performed.

[0057] Optionally, the water in the water tank 31 can be controlled to control whether water is delivered to the air supply space 4. When there is water in the water tank 31, the water will enter the air supply space 4 through the water distribution hole 32, so that the high-speed airflow tears the water in the air supply space 4, thereby generating water mist to achieve humidification. When humidification is not required, water is not delivered to the water tank 31. If there is no water in the water tank 31, water will not be delivered to the air supply space 4 through the water distribution hole 32, and normal air supply is performed.

[0058] Preferably, in the present application, the water volume in the water storage tank 31 is controlled to control whether water is delivered to the air supply space 4, and there is no need to set a switch at the water distribution hole 32 to control the opening and closing of the water distribution hole 32, thereby avoiding the blockage of the water distribution hole 32. It is only necessary to control whether the external water source enters the water storage tank 31, which can further simplify the structure and facilitate the maintenance and repair work in the later stage.

[0059] In some embodiments, the water distribution assembly 3 is disposed above the air supply space 4 , and the water in the water storage tank 31 enters the air supply space 4 through the water distribution hole 32 by its own gravity.

[0060] In the present application, by arranging the water distribution component 3 above the air supply space 4, the water in the water storage tank 31 can enter the air supply space 4 through the water distribution hole 32 by its own gravity, and there is no need to provide additional pressurization for the water in the water storage tank 31. The water in the water storage tank 31 enters the air supply space 4 through the water distribution hole 32, which can make the high-speed airflow tear the water entering the air supply space 4 and form water mist, further simplifying the structure.

[0061] Specifically, a water collecting pan is provided below the air supply space 4, through which water that has not fully formed water mist in the air supply space 4 can be collected, and the collected water can be discharged or reused, so as to prevent the water in the air supply space 4 from spilling out of the fan coil and affecting the external environment, and at the same time save water.

[0062] Optionally, the water distribution component 3 can also be arranged below the air supply space 4. The water distribution component 3 has a pressure component to pressurize the water in the water storage tank 31. The water distribution hole 32 is arranged above the water distribution component 3. Under the action of pressure, the water is sprayed upward into the air supply space 4. Similarly, the purpose of tearing the water entering the air supply space 4 by the high-speed airflow to form water mist can be achieved.

[0063] In a specific embodiment, a plurality of water distribution holes 32 are arranged along a first direction, and the first direction intersects with the direction of the air flow.

[0064] In the present application, the water distribution component 3 is arranged above the air supply space 4, and the water distribution hole 32 is connected to the bottom of the water storage tank 31. By setting a plurality of water distribution holes 32, and the arrangement direction of the plurality of water distribution holes 32 intersects with the direction of the airflow, the water entering the air supply space 4 can cover the air supply space 4 as much as possible, thereby improving the tearing effect of the high-speed airflow on the water entering the air supply space 4, and improving the generation effect of water mist.

[0065] Specifically, the first direction is perpendicular to the air flow direction, and the size of the air supply space 4 can be fully utilized, so that water entering the air supply space 4 can be effectively torn apart by the high-speed air flow to form water mist.

[0066] In another specific embodiment, the water distribution holes 32 are distributed on the water distribution component 3 in a matrix.

[0067] In the present application, the water distribution component 3 is arranged above the air supply space 4, and the water distribution hole 32 is connected to the bottom of the water storage tank 31. By setting a plurality of water distribution holes 32, the plurality of water distribution holes 32 are distributed in a matrix on the water distribution component 3, so that the water entering the air supply space 4 can cover the air supply space 4 as much as possible, thereby improving the tearing effect of the high-speed airflow on the water entering the air supply space 4 and improving the generation effect of water mist.

[0068] In another specific embodiment, a plurality of water distribution hole 32 matrices are provided on the water distribution component 3, each of the plurality of water distribution hole 32 matrices includes a plurality of water distribution holes 32 distributed in a matrix, and the plurality of water distribution hole 32 matrices are sequentially arranged along the first direction.

[0069] In some embodiments, the water distribution assembly 3 is further provided with a water inlet hole 33 , and the water inlet hole 33 is used to introduce an external water source into the water storage tank 31 .

[0070] In the present application, water from an external water source enters the water storage tank 31 through the water inlet hole 33, and then is delivered to the air supply space 4 through the water distribution hole 32. When the air supply needs to be humidified, it is only necessary to control the water from the external water source to enter the water storage tank 31. When the air supply does not need to be humidified, it is only necessary to stop delivering water to the water storage tank 31. The structure is simple, and it is convenient to control whether the air supply is humidified.

[0071] In a specific embodiment, the fan coil unit further includes a connecting component 5 , and the water inlet hole 33 is connected to the water distribution pipeline 21 of the surface cooler component 2 through the connecting component 5 .

[0072] In the present application, the water in the water distribution pipeline 21 of the surface cooler assembly 2 enters the water storage tank 31 through the connecting assembly 5. The water in the water distribution pipeline 21 has its own pressure, and the chilled water can be transported into the water storage tank 31 without setting additional pumping pressure, which can further simplify the structure and reduce costs. At the same time, the temperature of the chilled water in the water distribution pipeline 21 is relatively low, and the low-temperature atomized water mist can improve the heat exchange capacity of the surface cooler assembly 2.

[0073] Optionally, the connecting component 5 can also be connected to an external water source, for example, the connecting component 5 is connected to a tap water source or is connected to an external water source through a water pump, and the water from the external water source is transported to the water storage tank 31. The above-mentioned high-speed airflow can still be used to tear the water in the air supply space 4 to form water mist, thereby humidifying the air.

[0074] In some embodiments, the water distribution pipeline 21 includes a water diversion head 211 and a water collection head 212 ; the connecting component 5 connects the water diversion head 211 and / or the water collection head 212 .

[0075] In the present application, the water diverter 211 of the water distribution pipeline 21 is for water inlet, and the water collecting head 212 is for water return. The water pressure of the water diverter 211 is greater than the water pressure of the water collecting head 212. The water diverter 211 and / or the water collecting head 212 are connected through the connecting component 5, which facilitates the connection between the connecting component 5 and the water distribution pipeline 21. No additional structure is required, the structure is further simplified, and subsequent maintenance and inspection are convenient.

[0076] Specifically, the connecting component 5 in the present application connects the water diverter head 211 and the water collecting head 212 at the same time. Since the water pressures of the water diverter head 211 and the water collecting head 212 are different, the water pressure and water flow rate entering the water storage tank 31 can be controlled by selecting the connecting component 5 to be connected to the water diverter head 211 or the water collecting head 212, thereby adjusting the water distribution effect of the water distribution component 3 and adjusting the humidification effect of the air supply.

[0077] In a specific embodiment, the connecting component 5 is only connected to the water diverter 211 ; in another specific embodiment, the connecting component 5 is only connected to the water collecting head 212 ; in yet another specific embodiment, the connecting component is connected to the water diverter 211 and the water collecting head 212 .

[0078] In some embodiments, the connecting component 5 includes: a control valve 51; a first water diversion pipe 52, the two ends of which are respectively connected to the water diversion head 211 and the water inlet end of the control valve 51; a second water diversion pipe 53, the two ends of which are respectively connected to the water collection head 212 and the water inlet end of the control valve 51; and a third water diversion pipe 54, the two ends of which are respectively connected to the water inlet hole 33 and the water outlet end of the control valve 51.

[0079] In the present application, the control valve 51 is a three-way valve, one water inlet end of the control valve 51 is connected to the water diverter 211 through the first water diversion pipe 52, the other water inlet end is connected to the water collecting head 212 through the second water diversion pipe 53, and the water outlet end of the control valve 51 is connected to the water inlet hole 33 through the third water diversion pipe 54. By controlling the control valve 51, it can be selected whether the water in the water diverter 211 enters the water storage tank 31 or the water in the water collecting head 212 enters the water storage tank 31, which is convenient for selecting the water entering the water storage tank 31.

[0080] In the embodiment of the present application, the water dividing head 211 is the water inlet of the surface cooler assembly 2, and the water collecting head 212 is the return water of the surface cooler assembly 2. The water pressure of the water dividing head 211 is greater than the water pressure of the water collecting head 212. By selecting the water dividing head 211 to supply water to the water storage tank 31 or the water collecting head 212 to supply water to the water storage tank 31, the amount of water entering the water storage tank 31 per unit time can be controlled, and then the amount of water entering the air supply space 4 can be controlled, thereby achieving control of the humidification degree.

[0081] In some embodiments, the fan coil unit further includes a humidity sensor 6 and a controller 7 . The humidity sensor 6 is used to collect humidity information at the air outlet of the fan coil unit. The controller 7 controls the control valve 51 according to the humidity information collected by the humidity sensor 6 .

[0082] In the present application, the humidity information of the air outlet of the fan coil unit is collected by the humidity sensor 6, and the humidity information is sent to the controller 7 for analysis. Then the controller 7 controls the opening and closing and the opening degree of the valve 51 according to the humidity information, thereby effectively adjusting the humidification condition of the supply air and improving the accuracy and effect of humidification.

[0083] Among them, the air outlet of the fan coil unit is the air outlet end of the surface cooler component 2. The high-speed airflow blown out by the fan component 1 enters the surface cooler component 2 after passing through the air supply space 4, and is then delivered into the room at the air outlet end of the surface cooler.

[0084] Specifically, when the air conditioner is in the air supply mode, the system shall not enter the humidification mode, and the control valve 51 is in a closed state. When the air conditioner is in the cooling or heating mode, and when the humidity of the air outlet meets the humidity requirement, the system shall not enter the humidification mode, and the control valve 51 is in a closed state. When the air conditioner is in the cooling or heating mode, and when the humidity of the air outlet does not meet the humidity requirement, that is, when the air supply needs to be humidified, the controller 7 controls the control valve 51 to open, and then humidifies the air supply. The water source entering the water storage tank 31 can also be selected through the control valve 51. For example, when the humidity at the air outlet is very low and the humidification demand is very large, the control valve 51 can be controlled to make the water inlet 33 connected to the water diverter 211, and the water of the water diverter 211 with a higher water pressure is drained into the water storage tank 31, and the control valve 51 is opened to the maximum position, which can ensure the amount of water entering the water storage tank 31 per unit time, and then the rapid humidification of the air supply can be achieved. For another example, when the humidity at the air outlet is low and the humidification demand is average, the control valve 51 can be controlled to connect the water inlet 33 with the water collecting head 212, and the water at the water collecting head 212 with a lower water pressure can be drained into the water storage tank 31. At this time, the amount of water entering the water storage tank 31 per unit time is less than that when the water inlet 33 is connected to the water diversion head 211, and the effective humidification of the air supply can also be met. Moreover, the opening of the control valve 51 can be adjusted according to the humidification situation to further adjust the humidification accuracy. Moreover, by connecting the water inlet 33 with the water collecting head 212, the water collecting head 212 is the return water end of the surface cooler assembly 2, which can reduce the impact on the heat exchange of the surface cooler assembly 2, while ensuring the humidification of the air supply, while minimizing the impact on the heat exchange of the surface cooler assembly 2 itself.

[0085] In some embodiments, the water distribution assembly 3 further includes a guide member 34 disposed in the water tank 31 , and the guide member 34 guides the water entering the water tank 31 from the water inlet hole 33 so that the water in the water tank 31 flows toward the water distribution hole 32 .

[0086] In the present application, water enters the water tank 31 through the water inlet hole 33 and contacts the guide member 34, and is guided by the guide member 34, so that the water in the water tank 31 can flow to the water distribution hole 32, and the water in the water tank 31 can be diverted and evenly distributed to ensure that the water can cover as many water distribution holes 32 as possible, thereby improving the humidification effect of the air supply.

[0087] Specifically, since the water inlet 33 is connected to the water diverter 211 or the water collecting head 212, it has a certain water pressure, so that water will have a certain impact force when entering the water storage tank 31 through the water inlet 33. In order to facilitate the arrangement of the water inlet 33, the present application arranges the water inlet 33 on one side of the water storage tank 31, which will not affect the installation of other components and facilitates subsequent maintenance.

[0088] When the water pressure is low, the pressure of water after entering the water tank 31 is also low, and the coverage of water in the water tank 31 becomes smaller. The water inlet hole 33 faces the guide member 34, and after the water is intercepted and drained by the guide member 34, it loses its impact force and flows downward, and is discharged through the water distribution hole 32. At this time, the water in the water tank 31 can only cover some water distribution holes 32 that are close to the water inlet hole 33, ensuring that the air supply can be humidified.

[0089] When the water pressure is high, the pressure of water after entering the water tank 31 is also high, and the coverage of water in the water tank 31 will also become larger. The water inlet hole 33 ejects water toward the guide member 34, and after the water is intercepted and drained by the guide member 34, it loses its impact force and flows downward, and is discharged through the water distribution hole 32. At this time, the water in the water tank 31 can not only cover the water distribution holes 32 closer to the water inlet hole 33, but also cover some water distribution holes 32 farther from the water inlet hole 33, so that water can be delivered to the air supply space 4 through more water distribution holes 32, thereby improving the humidification effect.

[0090] Specifically, in the present application, the number of water distribution holes 32 covered by water in the water storage tank 31 affects the amount of water delivered to the air supply space 4, thereby affecting the effect of air supply humidification. By setting the guide member 34, the water entering the water storage tank 31 can be drained, and the range of the water entering the water storage tank 31 can be automatically adjusted according to the water pressure, thereby adaptively adjusting the number of water distribution holes 32 covered by water in the water storage tank 31. The humidification effect is adjusted.

[0091] The guide member 34 is a guide plate disposed on the top of the side wall of the water storage tank 31. Water entering through the water inlet hole 33 impacts the guide plate, then bounces off the guide plate and flows downward to enter the water distribution hole 32 below the guide plate.

[0092] In some embodiments, the water storage tank 31 has a diversion slope 311 , and the water distribution hole 32 includes a first water distribution hole 321 disposed on the diversion slope 311 .

[0093] In the present application, the guide member 34 is also arranged on the guide slope 311. After the water is intercepted and guided by the guide member 34, it flows along the guide slope 311 and then enters the first water distribution hole 321 on the guide slope 311, and enters the air supply space 4 through the first water distribution hole 321. The high-speed airflow blown out by the fan assembly 1 tears the water in the air supply space 4 to form water mist, which enters the surface cooler assembly 2 behind with the air flow and is then sent into the room.

[0094] Specifically, by setting the first water distribution hole 321 on the guide slope 311, it is convenient for water to enter the first water distribution hole 321 when flowing on the guide slope 311. When flowing on the guide slope 311, the water will spread as much as possible, cover the guide slope 311 as much as possible, and then enter the first water distribution hole 321 when passing through the first water distribution hole 321. The water is automatically evenly distributed, because the amount of water delivered by a single first water distribution hole 321 is similar, and by implementing more first water distribution holes 321 to distribute water, the amount of water delivered to the air supply space 4 per unit time can be achieved, thereby ensuring the humidification effect.

[0095] Specifically, the first water distribution holes 321 are staggered on the guide slope 311 to ensure that the water flowing downward along the guide slope 311 can cover the first water distribution holes 321 below as much as possible, thereby improving the utilization rate of water and ensuring the humidification effect by increasing the water delivery volume per unit time.

[0096] In the present application, the inclination of the diversion slope 311 needs to meet the requirements to ensure that the flow speed of water on the diversion slope 311 is not too fast, and the first water distribution hole 321 on the diversion slope 311 can be fully covered. If the water flows too fast, it will not only reduce the coverage area of ​​the water on the diversion slope 311, but also affect the water from entering the first water distribution hole 321 due to the too fast water flow, resulting in water waste. Specifically, the inclination angle of the diversion slope 311 in the present application can be selected to be 10°-30°.

[0097] In some embodiments, a water baffle 35 is disposed on the diversion slope 311 . The water baffle 35 is disposed adjacent to the first water distribution hole 321 to intercept water on the diversion slope 311 to flow to the first water distribution hole 321 .

[0098] In the present application, by setting a water baffle 35 on the guide slope 311, the water baffle 35 is a semicircular structure or an arc structure, which can intercept the water flowing downward on the guide slope 311, and the intercepted water is just at the position of the first water distribution hole 321, so that the water in the water baffle 35 can continue to pass through the first water distribution hole 321 into the air supply space 4 below. The structure is simple and the water supply effect of the first water distribution hole 321 can be guaranteed.

[0099] Specifically, the number of the water baffles 35 is equal to the number of the first water distribution holes 321. A water baffle 35 is disposed below each first water distribution hole 321. The water baffle 35 can intercept and accumulate water flowing downward from the diversion slope 311, and the accumulated water enters the corresponding first water distribution hole 321. This can facilitate the water on the diversion slope 311 to enter the first water distribution hole 321, and will not affect the water outside the water baffle 35 from entering the first water distribution hole 321 below.

[0100] In some embodiments, the water distribution hole 32 further includes a second water distribution hole 322 disposed at the bottom of the water storage tank 31 .

[0101] In the present application, when water flows along the guide slope 311, it first passes through the first water distribution hole 321 on the guide slope 311. When the water flow rate is large, some water will flow to the bottom of the water tank 31. At this time, water can be delivered through the second water distribution hole 322 at the bottom of the water tank 31, and the water in the water tank 31 can also be delivered to the air supply space 4 below, further improving the water delivery effect and humidification effect. At the same time, the water in the water tank 31 can be drained by setting the second water distribution hole 322 at the bottom of the water tank 31 to avoid water accumulation in the water tank 31, which causes bacteria to grow in the water tank 31.

[0102] Specifically, the bottom of the water storage tank 31 is a plane, and the second water distribution holes 322 are arranged at intervals along the extension direction of the plane, which can ensure that the water on the plane is fully drained.

[0103] Specifically, a water receiving pan 8 is provided below the air supply space 4, through which the water dripping in the air supply space 4 can be collected, and the collected water can be reused or discharged to avoid affecting the operation of the fan coil unit. The water receiving pan 8 can cover the entire bottom of the air supply space 4, so as to collect the water dripping in the entire air supply space 4. The water receiving pan 8 has a lead-out pipe, through which the water in the water receiving pan 8 is led out for secondary use, or the water is directly led out to avoid water accumulation in the water receiving pan 8.

[0104] When the fan coil unit needs to humidify the supply air, water is transported to the supply air space 4 through the water distribution component 3, so that the high-speed airflow blown out by the fan component 1 can tear the water in the supply air space 4 and form water mist, which enters the surface cooler component 2 at the rear and is sent into the room, thereby realizing the humidification of the supply air. At the same time, the structure is simple, which is convenient for subsequent maintenance and overhaul.

[0105] An embodiment of the present application provides an air conditioner, comprising the above-mentioned fan coil unit.

[0106] In the present application, the air conditioner in the present application can be a central air conditioner, and the fan coil unit serves as the terminal indoor unit of the central air conditioner, and the air temperature is mainly regulated by transporting refrigerant water of different temperatures to the inlet and outlet water pipes of the fan coil unit.

[0107] In the related technology, the humidification methods of central air conditioners are currently divided into two categories: one is isenthalpic humidification, including high-pressure micro-mist humidification, wet film humidification, ultrasonic humidification, etc., that is, spraying water into fine water droplets and then exchanging heat and moisture with the air. At this time, the temperature of the water or water droplets and the saturated air layer on their surface is equal to the temperature of the wet air, which is approximately an isenthalpic process. The other is isothermal humidification, including electrode humidification, dry steam humidification, infrared humidification, electric heating humidification, etc. At present, the humidification components of fan coil units involve many structures, which are complex and inconvenient for later maintenance and repair.

[0108] In the embodiment of the present application, water is directly delivered to the air supply space 4 between the fan assembly 1 and the cooler assembly 2, so that the high-speed airflow blown by the fan assembly 1 tears the water in the air supply space 4 and forms water mist, which enters the cooler assembly 2 and is then delivered into the room to humidify the air supply. The involved structures are reduced, the structure is simple, and the installation is reliable. While ensuring that the air supply can be humidified, it is convenient for later maintenance and repair.

[0109] Figure 7 A flowchart of a humidification control method provided in an embodiment of the present application; Figure 8 A flow chart of a humidification control method provided in an embodiment of the present application.

[0110] like Figure 7 and 8 As shown, the embodiment of the present application provides a humidification control method of the above air conditioner, comprising the following steps:

[0111] Step S1, determining whether the air conditioner is running in humidification mode;

[0112] Step S2: When the air conditioner is running in humidification mode, the water distribution component 3 delivers water to the air supply space 4 of the fan coil unit, so that the airflow tears the water in the air supply space 4 and forms water mist.

[0113] In the present application, when the air conditioner needs to humidify the supply air, the water distribution component 3 transports water to the supply air space 4 of the fan coil unit, and the water in the supply air space 4 is torn apart by the high-speed airflow blown out by the fan component 1 to form water mist, which then enters the rear surface cooler component 2 with the airflow and is finally sent into the room, thereby achieving the purpose of humidifying the supply air.

[0114] In the related technology, humidification methods are mainly divided into two categories: one is isenthalpic humidification, including high-pressure micro-mist humidification, wet film humidification, ultrasonic humidification, etc., that is, spraying water into fine water droplets and then exchanging heat and moisture with the air. At this time, the temperature of the saturated air layer on the water or water droplets and their surface is equal to the temperature of the wet air, which is approximately an isenthalpic process. The other is isothermal humidification, including electrode humidification, dry steam humidification, infrared humidification, electric heating humidification, etc. At present, the humidification components of fan coil units involve many structures, which are complex and inconvenient for later maintenance and repair.

[0115] In the present application, the structure is simple, and water only needs to be transported to the air supply space 4 through which the high-speed airflow passes, and the water can be torn into water mist by the high-speed airflow without pressurizing or atomizing the water in advance, so as to form humidification of the air supply. Compared with the prior art, the structure is greatly simplified, the cost is reduced, and the later maintenance and overhaul are convenient.

[0116] In some embodiments, the fan coil unit has a water storage tank 31 and a water distribution hole 32 connected to the water storage tank 31, the water distribution hole 32 is used to guide the water in the water storage tank 31 to the air supply space 4, the fan coil unit also includes a humidity sensor 6, a connecting component 5 and a controller 7, the water distribution pipeline 21 of the surface cooler component 2 in the fan coil unit transports water to the water storage tank 31 through the connecting component 5, the humidity sensor 6 is used to collect humidity information of the fan coil unit outlet, and the controller 7 controls the connecting component 5 according to the humidity information; the water distribution component 3 transports water to the air supply space 4 of the fan coil unit, including:

[0117] Step S21, when the humidity information collected by the humidity sensor 6 is greater than the first humidity value, the controller 7 controls the communication component 5 to be closed;

[0118] Step S22: When the humidity information collected by the humidity sensor 6 is less than the first humidity value, the controller 7 controls the communication component 5 to open.

[0119] In the present application, the humidity of the supply air is detected by setting a humidity sensor 6, and then whether humidification is needed is determined according to the humidity of the supply air. When the humidity of the supply air is greater than the first humidity value, the controller 7 controls the connecting component 5 to be closed. At this time, water will not be delivered to the air supply space 4, and the supply air will not be humidified. When the humidity of the supply air is less than the first humidity value, the controller 7 controls the connecting component 5 to be opened. At this time, the water in the water distribution pipeline 21 of the surface cooler component 2 is delivered to the water distribution component 3 through the connecting component 5, and the water in the water distribution component 3 is delivered to the air supply space 4. The water in the air supply space 4 is torn by airflow to form water mist, thereby realizing humidification of the supply air. Whether to humidify can be automatically controlled according to the humidity conditions.

[0120] Specifically, the first humidity value may be 65%.

[0121] In some embodiments, the water distribution pipeline 21 includes a water diversion head 211 and a water collection head 212, and the connecting component 5 connects the water diversion head 211 and the water collection head 212; the controller 7 controls the connecting component 5 to be opened, including:

[0122] Step S221, when the humidity information collected by the humidity sensor 6 is less than the second humidity value, the connecting component 5 is connected to the water diversion head 211;

[0123] Step S222, when the humidity information collected by the humidity sensor 6 is greater than the second humidity value, the connecting component 5 is connected to the water collecting head 212;

[0124] The second humidity value is less than the first humidity value.

[0125] In the present application, when the supply air needs to be humidified, the humidity sensor 6 can detect the humidity value at the air outlet to obtain the precise humidity at the air outlet, and then control the connection component 5 to be connected to the water diversion head 211 or the water collection head 212 according to the precise humidity value.

[0126] Specifically, the water diverter 211 is the water inlet of the surface cooler assembly 2, and the water collecting head 212 is the return water of the surface cooler assembly 2. The water pressure at the water diverter 211 is greater than the water pressure at the water collecting head 212. When the humidity value detected by the humidity sensor 6 is less than the second humidity value, it proves that rapid and sufficient humidification is required. The water diverter 211 is connected through the connecting assembly 5 so that the water entering the water storage tank 31 has a greater water pressure, and can have a longer range when entering the water storage tank 31 from the water inlet hole 33, thereby increasing the distribution of water in the water storage tank 31, and can allow water to be transported to the air supply space 4 through more water distribution holes 32, thereby increasing the amount of water delivered to the air supply space 4 per unit time, and improving the humidification effect. When the humidity collected by the humidity sensor 6 is greater than the second humidity value and lower than the first humidity value, it proves that humidification is required, but the humidification amount is less than the above situation. Therefore, by connecting the connecting component 5 to the water collecting head 212, the water entering the water tank 31 has a general water pressure, the range of water entering the water tank 31 through the water inlet hole 33 is shortened, and the distribution of water in the water tank 31 is reduced, so that only the water distribution holes 32 close to the water inlet hole 33 are used for water distribution, thereby reducing the water supply to the air supply space 4, and the humidification effect is less than the above situation.

[0127] Specifically, the second humidity value may be 40%.

[0128] In a specific embodiment, when the detected humidity value is less than 40%, the connecting component 5 is connected to the water diversion head 211, and the connecting component 5 is opened to the maximum state to ensure the water pressure and water delivery, so as to achieve rapid humidification. As the humidity value rises to above 40%, the connecting component is connected to the water collecting head 212, at which time the water pressure decreases and the humidification situation decreases accordingly. As the humidity further increases, the opening degree of the link component is gradually reduced so that the humidification maintains a certain balance and the humidity of the air outlet is maintained within the set value range. If it is less than the set value, the water delivery of the connecting component 5 is increased, and if it is greater than the set value, the water delivery of the connecting component 5 is reduced.

[0129] When the detected humidity value is greater than 65%, it is proved that humidification is not required and the connecting component 5 can be closed.

[0130] Specifically, when the air conditioner is in the air supply mode, the system must not enter the humidification mode, that is, the connecting component 5 always remains in a closed state.

[0131] In the present application, when the supply air needs to be humidified, water is transported to the air supply space 4 through the water distribution component 3, so that the high-speed airflow blown out by the fan component 1 can tear the water in the air supply space 4 and form water mist. The water mist enters the rear surface cooler component 2 and is sent into the room, thereby realizing the humidification of the supply air. At the same time, the structure is simple, which is convenient for subsequent maintenance and inspection.

[0132] It should be noted that in this application, the chilled water in the unit shall not be greater than 10% of the standard water flow of the unit to prevent excessive chilled water from being drawn, resulting in excessive humidification and insufficient cooling and heating capacity of the system. The capacity tolerance allowed by the cooling and heating capacity standard is generally around 10%.

[0133] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0134] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0135] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fan coil unit, characterized in that: include: A fan assembly (1) and a surface cooler assembly (2), wherein an air supply space (4) is formed between the fan assembly (1) and the surface cooler assembly (2), and the airflow delivered by the fan assembly (1) enters the surface cooler assembly (2) through the air supply space (4); and A water distribution component (3), the water distribution component (3) comprising a water storage tank (31) and a water distribution hole (32) in communication with the water storage tank (31), the water storage tank (31) being connected to a chilled water source in a refrigeration system, and the chilled water entering the water storage tank (31) enters the air supply space (4) through the water distribution hole (32) by its own gravity; The airflow delivered by the fan assembly (1) tears the water in the air supply space (4) to form water mist, and the water mist enters the surface cooler assembly (2) along with the airflow; The water distribution assembly (3) is also provided with a water inlet hole (33), and the water inlet hole (33) is used to introduce a chilled water source into the water storage tank (31). The fan coil unit also includes a connecting assembly (5), and the water inlet hole (33) is connected to the water distribution pipeline (21) of the surface cooler assembly (2) through the connecting assembly (5); The water distribution pipeline (21) comprises a water diversion head (211) and a water collection head (212); the connecting component (5) connects the water diversion head (211) and the water collection head (212); The fan coil unit further comprises a humidity sensor (6) and a controller (7), wherein the humidity sensor (6) is used to collect humidity information at the air outlet of the fan coil unit; When the humidity information collected by the humidity sensor (6) is less than a second humidity value, the controller (7) controls the connecting component (5) to connect to the water diversion head (211); when the humidity information collected by the humidity sensor (6) is greater than the second humidity value and less than a first humidity value, the controller (7) controls the connecting component (5) to connect to the water collection head (212); the second humidity value is less than the first humidity value.

2. The fan coil unit according to claim 1, characterized in that: A plurality of the water distribution holes (32) are arranged along a first direction, and the first direction intersects with the direction of the airflow.

3. The fan coil unit according to claim 1, characterized in that: The water distribution holes (32) are distributed in a matrix on the water distribution component (3).

4. The fan coil unit according to claim 1, characterized in that: The connectivity component (5) comprises: Control valve (51); A first water diversion pipe (52), wherein two ends of the first water diversion pipe (52) are respectively connected to the water diversion head (211) and the water inlet end of the control valve (51); a second water diversion pipe (53), wherein two ends of the second water diversion pipe (53) are respectively connected to the water collecting head (212) and the water inlet end of the control valve (51); and A third water diversion pipe (54), wherein two ends of the third water diversion pipe (54) are respectively connected to the water inlet hole (33) and the water outlet end of the control valve (51).

5. The fan coil unit according to claim 4, characterized in that: The controller (7) controls the control valve (51) according to the humidity information collected by the humidity sensor (6).

6. The fan coil unit according to claim 5, characterized in that: The water distribution assembly (3) further comprises a flow guide (34) disposed in the water storage tank (31), wherein the flow guide (34) guides water entering the water storage tank (31) from the water inlet hole (33), so that the water in the water storage tank (31) flows toward the water distribution hole (32).

7. The fan coil unit according to claim 1, characterized in that: The water storage tank (31) has a diversion slope (311), and the water distribution hole (32) comprises a first water distribution hole (321) arranged on the diversion slope (311).

8. The fan coil unit according to claim 7, characterized in that: A water baffle (35) is provided on the diversion slope (311); the water baffle (35) is provided adjacent to the first water distribution hole (321) and is used to intercept water on the diversion slope (311) to flow to the first water distribution hole (321).

9. The fan coil unit according to claim 7, characterized in that: The water distribution hole (32) further comprises a second water distribution hole (322) arranged at the bottom of the water storage tank (31).

10. An air conditioner, characterized in that: Comprising the fan coil unit as described in any one of claims 1-9.

11. A humidification control method for an air conditioner as claimed in claim 10, characterized in that: The steps include: Determine whether the air conditioner is running in humidification mode; When the air conditioner operates in a humidification mode, the water distribution component (3) delivers water to the air supply space (4) of the fan coil unit, so that the airflow tears the water in the air supply space (4) and forms water mist.

12. The humidification control method according to claim 11, characterized in that: The humidification control method comprises: When the humidity information collected by the humidity sensor (6) is greater than a first humidity value, the controller (7) controls the communication component (5) to be closed; When the humidity information collected by the humidity sensor (6) is less than the first humidity value, the controller (7) controls the communication component (5) to open.

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