Air conditioning system and wet film humidification control method thereof

Abstract

The present application provides an air conditioning system and a wet film humidification control method thereof, wherein the air conditioning system includes a cabinet, a fan, a wet film, and a water supply component. The fan is installed in the cabinet; the wet film is arranged in the cabinet, and the wet film is inclined at a preset angle relative to the horizontal plane; the wet film is used to humidify the air flowing through the wet film. The water supply component is used to supply water to the wet film; in the initial stage of humidification of the air conditioning system, the affinity between water and the wet film is relatively small, and the wet film is inclined at a preset angle relative to the horizontal plane, causing water droplets to easily detach from the wet film. After the fan is operated to a speed greater than a preset speed threshold, the water supply component supplies water to the wet film at a water supply less than a preset water supply until a first preset time; the ease with which water droplets detach from the wet film is reduced; water is prevented from dripping from the wet film before the wet film is wetted, thereby avoiding the problem of water blowing in the initial stage of humidification of the air conditioning system.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning and humidification, and more specifically, to an air conditioning system and a wet film humidification control method thereof. Background Art

[0002] In modern data center environments, humidity control is one of the key factors to ensure stable operation and extend the service life of equipment. Wet film humidification is based on the principle of natural evaporation. When dry air passes through the wet film, the water is evaporated, thereby increasing the air humidity and achieving the purpose of humidification.

[0003] In practical applications, in order to maximize the humidification effect, the wet film humidifier should ideally be placed parallel to the surface of the heat exchanger. However, due to the tilted design of the heat exchanger itself, the wet film humidifier has to be installed tilted accordingly. This tilted state brings obvious problems to the humidification process: in the early stage of humidification, when the wet film is not completely wetted, the affinity with the wet film is insufficient, causing the water on the wet film to drip downwards under the influence of gravity. The water droplets are then carried away by the airflow, resulting in a "blowing water" phenomenon. This will not only reduce the humidification efficiency, but may also cause unnecessary water accumulation inside the data center, increase maintenance costs, and even pose a potential threat to the safe operation of data center equipment. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an air conditioning system and a wet film humidification control method thereof, so as to solve the technical problem in the prior art that the wet film humidification air conditioning is prone to "water blowing" phenomenon in the early stage of humidification.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] An air conditioning system is provided, comprising:

[0007] Cabinets;

[0008] A fan, installed in the cabinet;

[0009] A wet film is arranged in the cabinet, the wet film is inclined at a preset angle relative to a horizontal plane, and the wet film is used for humidification;

[0010] A water supply assembly, used for supplying water to the wet membrane;

[0011] In the initial stage of humidification of the air-conditioning system, when the fan runs to a speed greater than a preset speed threshold, the water supply component supplies water to the wet film at a speed less than a preset water supply until a first preset time; wherein the airflow generated by the fan in the cabinet when it is running is used to blow water vapor upward from under the wet film.

[0012] As a further improvement of the above technical solution:

[0013] Optionally, the water supply component includes a water inlet pipe and a water pump. When the air-conditioning system starts to humidify the machine room, when the fan runs to a speed greater than a preset speed threshold, the water inlet pipe inputs water to the water pump, and the water pump supplies water to the wet film at a voltage less than a preset voltage threshold until the first preset time.

[0014] Optionally, the water supply assembly also includes a water receiving tray arranged below the wet film, the water outlet end of the water inlet pipe and the water inlet end of the water pump are respectively connected to the water receiving tray, the water inlet end of the water inlet pipe is connected to an external water source, and the water outlet end of the water pump is used to supply water to the wet film.

[0015] Optionally, the water supply component also includes a water inlet solenoid valve, a liquid level switch and a pressure regulating switch. The water inlet solenoid valve is installed on the water inlet pipe to control the on-off of the water inlet pipe. The liquid level switch is installed in the water receiving tray and is connected to the water inlet solenoid valve signal; the pressure regulating switch is used to adjust the working power of the water pump.

[0016] Optionally, the water supply component also includes a water inlet pipe and a water inlet regulating valve. When the air-conditioning system starts to humidify the machine room, when the fan runs to a speed greater than a preset speed threshold, the water inlet pipe inputs water into the water inlet regulating valve, and the water inlet regulating valve supplies water to the wet film at an opening less than a preset degree until the first preset time.

[0017] Optionally, the water supply assembly also includes a water receiving tray arranged below the wet film and a drain pipe for draining water from the water receiving tray, the water outlet end of the water inlet pipe is connected to the water inlet end of the water inlet regulating valve, the water inlet end of the water inlet pipe is connected to an external water source, and the water outlet end of the water inlet regulating valve is used to supply water to the wet film.

[0018] Optionally, it also includes a heat exchanger installed in the cabinet, and the heat exchanger is arranged above the wet film and close to the wet film.

[0019] The present application also provides a wet film humidification control method for the above air conditioning system, wherein in the initial stage of humidification of the air conditioning system, when the fan runs to a speed greater than a preset speed threshold, the water supply component supplies water to the wet film at a speed less than a preset water supply until a first preset time;

[0020] During the normal humidification stage of the air conditioning system, the fan runs at a preset speed, and the water supply component supplies water to the wet membrane at a preset water supply volume until humidification is completed.

[0021] As a further improvement of the above technical solution:

[0022] Optionally, in the initial stage of humidification of the air-conditioning system, after the fan runs to a speed greater than a preset speed threshold, water is injected into the water supply component, and after the water is injected for a second preset time, the water supply component supplies water to the wet film at a water supply volume less than a preset water supply volume for a first preset time.

[0023] Optionally, during the period when the water supply component supplies water to the wet membrane at a water supply volume less than a preset water supply volume, the water supply component supplies water to the wet membrane until the first preset time in a manner of starting and stopping a reciprocating cycle.

[0024] The beneficial effects of an air conditioning system and a wet film humidification control method thereof provided by the present application are:

[0025] The air conditioning system provided by the present application includes a cabinet, a fan, a wet film and a water supply component. The fan is installed in the cabinet, and the airflow generated in the cabinet when the fan is running is used to blow water vapor upward from the bottom of the wet film; the wet film is arranged in the cabinet, the wet film is inclined at a preset angle relative to the horizontal plane, the wet film is used to humidify the air flowing through the wet film, and the water supply component is used to supply water to the wet film; in the initial stage of humidification of the air conditioning system, since the wet film has not been completely wetted by water, the affinity between water and the wet film is small, and since the wet film is inclined at a preset angle relative to the horizontal plane, water droplets are easily detached from the wet film. Therefore, in the initial stage of humidification of the air-conditioning system, the fan is first operated to a speed greater than a preset speed threshold, and the water supply component then supplies water to the wet film at a speed less than a preset water supply until a first preset time. On the one hand, when the fan is operated to a speed greater than the preset speed threshold, the driving force of the fan's larger speed can be used to make the airflow blow upward from under the wet film with greater power, which can offset the tendency of water droplets to drip downward to the greatest extent, reduce the influence of gravity on water droplets, and reduce the ease with which water droplets detach from the wet film; on the other hand, the water supply component supplies water to the wet film at a speed less than the preset water supply until the first preset time, which can prevent water from overflowing and dripping from the wet film before the wet film is completely wetted, thereby avoiding the problem of blowing water in the initial stage of humidification of the air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the internal structure of the first wet film humidifying air conditioner provided in this application;

[0028] Figure 2 A schematic diagram of the internal structure of the second wet film humidifying air conditioner provided in this application;

[0029] Figure 3 A flow chart of a control method for a first wet film humidifying air conditioner provided in the present application;

[0030] Figure 4 This is the control of the liquid level switch in the first control method of the wet film humidifying air conditioner provided in the present application.

[0031] flow chart;

[0032] Figure 5 A flow chart of a second control method for a wet film humidifying air conditioner provided in the present application;

[0033] Figure 6 This is the control of the water inlet regulating valve in the second control method of the wet film humidification air conditioner provided in the present application.

[0034] Among them, the reference numerals in the figure are:

[0035] 1. Cabinet; 2. Fan;

[0036] 3. Heat exchanger; 4. Wet film humidifier;

[0037] 5. Water supply assembly; 51. Water inlet pipe;

[0038] 52. Water tray; 53. Circulating water pump;

[0039] 54. Water inlet solenoid valve; 55. Liquid level switch;

[0040] 56. Pressure regulating switch; 57. Water inlet regulating valve;

[0041] 58. Drain pipe. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0048] In the following description, suffixes such as "circuit", "component", "assembly" or "unit" are used only to facilitate the description of the present invention and have no specific meanings. Therefore, they can be used in combination.

[0049] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0050] like Figure 1 As shown, the present application provides an air conditioning system, including a cabinet 1, a fan 2, a wet membrane 4 and a water supply component 5.

[0051] The cabinet 1 is used as a supporting structure of the air conditioning system, and has an air duct inside to ensure smooth airflow through various functional components. The fan 2 is installed in the cabinet 1. The function of the fan 2 is to generate airflow so that external air can be sucked into the cabinet 1 and blown to the required place. The wet film 4 is arranged in the cabinet 1, and the wet film 4 is inclined at a preset angle relative to the horizontal plane. The wet film 4 is used to humidify the air flowing through the wet film 4; the water supply component 5 is used to supply water to the wet film 4.

[0052] In the initial stage of humidification of the air conditioning system, since the wet film 4 has not been completely wetted by water, the affinity between water and the wet film 4 is relatively small, and since the wet film 4 is inclined at a preset angle relative to the horizontal plane, water droplets are easily detached from the wet film 4. Therefore, after the fan 2 is operated to a speed greater than a preset speed threshold, the water supply component 5 supplies water to the wet film 4 at a speed less than a preset water supply until the first preset time; wherein, the airflow generated by the fan 2 in the cabinet 1 when it is running is used to blow water vapor upward from the bottom of the wet film 4. On the one hand, when the fan 2 is operated to a speed greater than a preset speed threshold, the driving force of the higher speed of the fan 2 can be used to make the airflow blowing upward from the bottom of the wet film 4 have a greater power, which can offset the tendency of water droplets to drip downward to the maximum extent, reduce the influence of gravity on water droplets, and reduce the ease with which water droplets detach from the wet film 4; on the other hand, the water supply component supplies water to the wet film 4 at a water supply volume less than the preset water supply volume for a first preset time, which can prevent water from overflowing and dripping from the wet film 4 before the wet film 4 is completely wetted, thereby avoiding the problem of blowing water in the initial stage of humidification of the air-conditioning system. Since it takes a certain amount of time for the fan 2 to speed up to a speed greater than the preset speed threshold, when the speed does not reach a speed greater than the preset speed threshold, the driving force of the fan 2 is relatively small, the gravity of the water droplets is greater than the power of the fan 2 to drive the airflow, and the water droplets are still easy to drip from the wet film 4. Therefore, it is necessary to wait until the speed of the fan 2 is greater than the preset speed threshold before the water supply component 5 supplies water to the wet film 4, and the water supply component 5 supplies water to the wet film 4 at a water supply less than the preset amount for a first preset time, and then resumes the normal water supply setting. In this way, the water supply reaches the first preset time, which can ensure that the wet film 4 can be completely wetted to prevent water droplets from dripping from the wet film 4, wherein the preset speed threshold and the first preset time can be calculated values ​​or empirical values, and the preset speed threshold is generally greater than the fan speed when the wet film is normally used for humidification.

[0053] like Figure 1 As shown, in a specific embodiment of the present application, the water supply assembly 5 includes a water inlet pipe 51 and a water pump 53. When the air conditioning system starts to humidify the machine room, when the fan 2 runs to a speed greater than a preset speed threshold, the water inlet pipe 51 inputs water to the water pump 53, and the water pump 53 supplies water to the wet film 4 at a voltage less than a preset voltage threshold for a first preset time. The water pump 53 works at a voltage less than the preset voltage threshold and supplies water to the wet film 4 at a water supply less than a preset water supply.

[0054] like Figure 1As shown, in a specific embodiment of the present application, the water supply assembly 5 further includes a water receiving tray 52 disposed below the wet film 4. The water outlet end of the water inlet pipe 51 and the water inlet end of the water pump 53 are respectively connected to the water receiving tray 52, the water inlet end of the water inlet pipe 51 is connected to an external water source, and the water outlet end of the water pump 53 is used to supply water to the wet film. The water receiving tray 52 plays the role of storing water and receiving the running water that has not completely evaporated on the wet film 4.

[0055] like Figure 1 As shown, in a specific embodiment of the present application, the water supply assembly 5 also includes a water inlet solenoid valve 54, a liquid level switch 55 and a pressure regulating switch 56. The water inlet solenoid valve 54 is installed on the water inlet pipe 51 to control the on and off of the water inlet pipe 51. The liquid level switch 55 is installed in the water receiving tray 52 and is connected to the water inlet solenoid valve 54 by signal. When the liquid level in the water receiving tray 52 reaches the preset high water level threshold, the liquid level switch 55 closes and sends a closing instruction to the water inlet solenoid valve 54 through the circuit connection, thereby stopping the continued injection of water into the water receiving tray 52, effectively preventing the water level from rising excessively. Figure 4 As shown, when the liquid level in the water receiving tray 52 drops to a preset low water level threshold due to evaporation or other reasons, the liquid level switch 55 is disconnected and sends a signal to the water inlet solenoid valve 54 to instruct it to open and run for a preset time to resume the water injection process into the water receiving tray 52. ​​Otherwise, a signal is sent to close the water inlet solenoid valve 54 and start the water pump 53 to inject water into the wet membrane 4. When humidification is no longer needed, humidification is stopped.

[0056] The voltage regulating switch 56 is used to adjust the working power of the water pump 53. The voltage regulating switch 56 can adjust its output voltage or current value according to the current working stage of the air conditioning system, thereby adjusting the working power of the water pump 53. When the air conditioning system is in different working stages, such as the startup stage, the stable operation stage or the standby stage, its demand for water volume will be different. At this time, the voltage regulating switch 56 can adjust the working power of the water pump 53 so that the water volume output by the water pump 53 is consistent with the actual demand of the air conditioning system.

[0057] In a specific embodiment of the present application, the water inlet solenoid valve 54 can also be used in conjunction with a time delay switch (not shown). When the liquid level in the water receiving tray 52 reaches a preset high water level threshold, the liquid level switch 55 is triggered, and the liquid level switch 55 activates the time delay switch after a set time (e.g., 5s), and then closes the water inlet solenoid valve 54. Similarly, when the liquid level in the water receiving tray 52 drops to a preset low water level threshold due to evaporation or other reasons, the liquid level switch 55 also activates the time delay switch after a set time (e.g., 10s), and then opens the water inlet solenoid valve 54.

[0058] like Figure 2As shown, in another specific embodiment of the present application, the water supply assembly 5 further includes a water inlet pipe 51 and a water inlet regulating valve 57. When the air conditioning system starts to humidify the machine room, when the fan 2 runs to a speed greater than a preset speed threshold, the water inlet pipe 51 inputs water into the water inlet regulating valve 57, and the water inlet regulating valve 57 supplies water to the wet film 4 at a speed less than a preset opening until a first preset time, that is, supplies water to the wet film 4 at a water supply volume less than a preset time. The water inlet regulating valve 57 can specifically be a flow regulating valve.

[0059] like Figure 2 As shown, in a specific embodiment of the present application, the water supply assembly 5 further includes a water receiving tray 52 disposed below the wet film 4 and a drain pipe 58 for draining water from the water receiving tray 52. ​​The water outlet end of the water inlet pipe 51 is connected to the water inlet end of the water inlet regulating valve 57, and the water inlet end of the water inlet pipe 51 is connected to an external water source. The water outlet end of the water inlet regulating valve 57 is used to supply water to the wet film 4. The water that is not completely evaporated on the wet film 4 flows to the water receiving tray 52 and is then discharged through the drain pipe 58.

[0060] like Figure 1 and Figure 2 As shown, in a specific embodiment of the present application, the air conditioning system also includes a heat exchanger 3 installed in the cabinet 1, and the heat exchanger 3 is arranged above the wet film and close to the wet film 4. The airflow generated by the fan 2 flows through the heat exchanger 3 and exchanges heat with the heat exchanger 3, thereby adjusting the temperature of the gas. It is worth noting that the heat exchanger 3 is also inclined at a preset angle relative to the horizontal plane, thereby increasing the area of ​​the heat exchanger 3 that can contact the air in the cabinet 1. The number of heat exchangers 3 can be one or more. When the number of heat exchangers 3 is two, the two heat exchangers 3 can be arranged in a "V" shape.

[0061] like Figure 3 and Figure 5 As shown, the present application also provides a wet film humidification control method for the above-mentioned air-conditioning system. In the initial stage of humidification of the air-conditioning system, when the fan 2 runs to a speed greater than a preset speed threshold, the water supply component 5 supplies water to the wet film 4 at a speed less than a preset water supply until a first preset time; on the one hand, when the fan 2 runs to a speed greater than the preset speed threshold, it can generate a higher speed airflow, and the power of the airflow can offset the tendency of water droplets to drip downward to the maximum extent. Under the support of the high-speed airflow, the ease with which water droplets detach from the wet film 4 is reduced; on the other hand, the water supply component supplies water to the wet film 4 at a speed less than the preset water supply until the first preset time, which can prevent the wet film 4 from overflowing and dripping before the wet film 4 is completely wetted, thereby avoiding the problem of water blowing in the initial stage of humidification of the air-conditioning system.

[0062] When the air conditioning system enters the normal humidification stage, the fan 2 runs at a preset speed, and the water supply component 5 supplies water to the wet membrane 4 at a preset water supply until the humidification is completed, wherein the preset speed is less than the preset speed threshold.

[0063] In a specific embodiment of the present application, in the initial stage of humidification of the air conditioning system, after the fan 2 runs to a speed greater than a preset speed threshold, water is injected into the water supply component 5; specifically, water is injected into the water receiving tray 52. ​​After the water is injected for the second preset time, when the water level in the water receiving tray 52 reaches a preset height, it is ensured that there is enough water for the water pump 53 to take. The water supply component 5 then supplies water to the wet membrane 4 at a water supply less than the preset water supply until the first preset time.

[0064] like Figure 6 As shown, in a specific embodiment of the present application, during the period when the water supply component 5 supplies water to the wet membrane 4 at a water supply volume less than a preset water supply volume, the water supply component 5 supplies water to the wet membrane 4 until a first preset time in a reciprocating cycle of starting and stopping, which can not only meet the water demand of the wet membrane 4 in the startup phase, but also reduce the unevaporated water directly discharged from the drain pipe 58, thereby reducing the waste of water resources.

[0065] Among them, one embodiment is to use Figure 1 The air conditioning system shown is carried out, including:

[0066] Initial stage of humidification: When the air conditioning system starts humidification, the fan 2 first runs to a speed greater than the preset speed threshold, and then the water inlet solenoid valve 54 is opened to inject water into the water receiving tray 52. ​​When the low water level float switch in the water receiving tray 52 is closed, the water inlet solenoid valve 54 is closed after a delay of 5 seconds, and the voltage regulating switch 56 supplies the water supply pump 53 with a voltage less than the preset voltage threshold, and the circulating water pump 53 runs for the preset running time and then shuts down. In this stage, the fan 2 keeps running at a speed greater than the preset speed threshold and runs for the preset fan 2 time (adjusted according to actual tests).

[0067] In the initial stage of humidification, when the wet film 4 has not yet been completely wetted by water, the affinity between water and the wet film 4 is relatively small, and because the wet film 4 is placed at an angle, the force direction of the water is changed, causing the water droplets to float out easily. In this stage, the water flow rate of the wet film 4 is reduced by reducing the power supply voltage of the circulating water pump 53. At the same time, the fan 2 is first operated at a speed greater than the preset speed threshold, and then water is started to be taken in. On the one hand, the effect of the airflow can offset the influence of gravity on the water droplets; on the other hand, reducing the water flow rate of the wet film 4 can prevent excessive water from overflowing without contacting the wet film 4, so that the water droplets flow into the water receiving tray 52 along the wet film 4, avoiding the problem of blowing water in the initial stage of humidification.

[0068] Routine humidification stage: This stage is entered after the above initial stage, the fan 2 resumes running to the preset speed, the voltage regulating switch 56 resumes to the preset voltage, the flow of the circulating water pump 53 resumes the normal water supply flow, and the humidification amount is increased.

[0069] Among them, when the low water level float floats up, it is in a closed state, indicating that the water level in the water tray reaches the conditions for opening the circulating water pump and closing the water inlet solenoid valve. For example, at the beginning of humidification, the water level in the water tray is relatively low. At this time, the low water level float switch is disconnected, the water inlet solenoid valve is opened and water is poured into the water tray. When the water level becomes high and the low water level float switch is closed, the water inlet solenoid valve is closed and the humidification circulating water pump is turned on. The circulating water pump is protected by the low water level float switch. When the low water level switch is disconnected, the circulating water pump is immediately turned off and is allowed to be turned on only after the low water level float switch is closed for 10 seconds.

[0070] Another embodiment is to use Figure 2 The air conditioning system shown is carried out, including:

[0071] Initial stage of humidification: When the air conditioning system starts humidification, the fan 2 first runs to a speed greater than the preset speed threshold, and then the water inlet regulating valve 57 is opened at a speed less than the preset opening to directly inject water into the wet film 4. After the water inlet regulating valve 57 runs for the preset opening time, the water inlet regulating valve 57 is closed for the preset stop time, and then the water inlet regulating valve 57 is opened again, and this cycle is repeated. The condensed water of the heat exchanger in the water receiving tray 52 and the water dripping from the wet film are directly discharged through the drain pipe 58. In this stage, the fan 2 keeps running at a speed greater than the preset speed threshold and runs for the preset fan time (adjusted according to actual tests).

[0072] The water inlet regulating valve can be an electric flow regulating valve, etc. The electric flow regulating valve is a valve body that uses a motor or a stepper motor to adjust the valve core rotation angle, thereby changing the flow of fluid flowing through the valve core. Reducing the wet film water inlet flow in the initial stage is consistent with the role of the circulating humidification water pump in the first control mode, preventing excessive water injection at this stage.

[0073] Routine humidification stage: This stage begins after the above initial stage. The fan resumes operation to the preset speed and the water inlet regulating valve resumes to the preset opening.

[0074] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An air conditioning system, characterized in that: include: Cabinet (1); A fan (2) is installed in the cabinet (1); A wet film (4) is arranged in the cabinet (1), the wet film (4) is inclined at a preset angle relative to a horizontal plane, and the wet film (4) is used for humidification; A water supply component (5), used for supplying water to the wet membrane (4); In the initial stage of humidification of the air conditioning system, when the fan (2) runs to a speed greater than a preset speed threshold, the water supply component (5) supplies water to the wet film (4) at a water supply volume less than a preset value until a first preset time; wherein the airflow generated by the fan (2) in the cabinet (1) when it is running is used to blow water vapor upward from below the wet film (4).

2. The air conditioning system according to claim 1, characterized in that: The water supply component (5) comprises a water inlet pipe (51) and a water pump (53). When the air conditioning system starts to humidify the machine room, when the fan (2) runs to a speed greater than a preset speed threshold, the water inlet pipe (51) inputs water to the water pump (53), and the water pump (53) supplies water to the wet film (4) at a voltage less than a preset voltage threshold until the first preset time.

3. The air conditioning system according to claim 2, characterized in that: The water supply assembly (5) further comprises a water receiving tray (52) arranged below the wet membrane (4); the water outlet end of the water inlet pipe (51) and the water inlet end of the water pump (53) are respectively connected to the water receiving tray (52); the water inlet end of the water inlet pipe (51) is connected to an external water source; the water outlet end of the water pump (53) is used to supply water to the wet membrane.

4. The air conditioning system according to claim 3, characterized in that: The water supply assembly (5) further comprises a water inlet solenoid valve (54), a liquid level switch (55) and a pressure regulating switch (56); the water inlet solenoid valve (54) is installed on the water inlet pipe (51) and is used to control the on and off of the water inlet pipe (51); the liquid level switch (55) is installed in the water receiving tray (52) and is signal-connected to the water inlet solenoid valve (54); and the pressure regulating switch (56) is used to adjust the working power of the water pump (53).

5. The air conditioning system according to claim 1, characterized in that: The water supply component (5) further comprises a water inlet pipe (51) and a water inlet regulating valve (57). When the air conditioning system starts to humidify the machine room, when the fan (2) runs to a speed greater than a preset speed threshold, the water inlet pipe (51) inputs water into the water inlet regulating valve (57), and the water inlet regulating valve (57) supplies water to the wet film (4) at an opening less than a preset value until the first preset time.

6. The air conditioning system according to claim 5, characterized in that: The water supply assembly (5) further comprises a water receiving tray (52) arranged below the wet film (4) and a drain pipe (58) for draining water from the water receiving tray (52); the water outlet end of the water inlet pipe (51) is connected to the water inlet end of the water inlet regulating valve (57); the water inlet end of the water inlet pipe (51) is connected to an external water source; and the water outlet end of the water inlet regulating valve (57) is used to supply water to the wet film.

7. The air conditioning system according to any one of claims 1 to 6, characterized in that: It also comprises a heat exchanger (3) installed in the cabinet (1), wherein the heat exchanger (3) is arranged above the wet film and in close proximity to the wet film (4).

8. A wet film humidification control method for an air conditioning system according to any one of claims 1 to 7, characterized in that: In the initial humidification stage of the air conditioning system, when the fan (2) runs at a speed greater than a preset speed threshold, the water supply component (5) supplies water to the wet film (4) at a water supply volume less than a preset water supply volume for a first preset time; During the normal humidification stage of the air conditioning system, the fan (2) operates at a preset speed, and the water supply component (5) supplies water to the wet membrane (4) at a preset water supply volume until humidification is completed.

9. The wet film humidification control method according to claim 8, characterized in that: In the initial stage of humidification of the air conditioning system, after the fan (2) runs to a speed greater than a preset speed threshold, water is injected into the water supply component (5), and after the water is injected for a second preset time, the water supply component (5) supplies water to the wet film (4) at a water supply volume less than a preset water supply volume for a first preset time.

10. The wet film humidification control method according to claim 8, characterized in that: During the period when the water supply component (5) supplies water to the wet membrane (4) at a water supply volume less than a preset water supply volume, the water supply component (5) supplies water to the wet membrane (4) until the first preset time in a reciprocating cycle of opening and stopping.

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