Humidity control system, refrigeration house and control method

Abstract

The invention provides a humidity control system, a refrigeration house and a control method, and the humidity control system comprises a humidifying structure which is used for spraying water mist; the humidity sensor is used for detecting the temperature; a plurality of humidity sensors are arranged; the plurality of humidity sensors are arranged at intervals; the control module is in signal connection with the humidifying structure, and the control module is in signal connection with the humidity sensor; and the control module controls the voltage input into the humidifying structure according to the humidity detected by the humidity sensor so as to control the humidifying speed of the humidifying structure, and the humidity control system solves the technical problem that the humidity in the refrigeration house is inaccurate in the related technology.

Description

Technical Field

[0001] The present invention relates to the technical field of humidity control, and in particular to a humidity control system, a cold storage and a control method. Background Art

[0002] In recent years, with the increasing requirements for the quality of goods, the requirements for the control of humidity in cold storage have gradually increased. However, most cold storages currently only have temperature control. The refrigeration equipment in the cold storage blows cold air directly on the goods, refrigerating and dehumidifying a large amount at the same time, and the humidity is always below 50%. In addition, even if there is a humidification system in the fresh-keeping cold storage, there is no precise control of the humidity, resulting in poor preservation effect and high cargo damage rate in the fresh-keeping cold storage.

[0003] Most of the existing cold storages do not have humidity control, and most of them use measures such as sprinkling water to solve the humidity problem. The impact of goods on humidity is not considered, and the humidity at each location cannot be accurately controlled, resulting in uneven humidity in the entire warehouse.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a humidity control system, a cold storage and a control method to solve the technical problem of inaccurate humidity in the cold storage in the related art.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical scheme: a humidifying structure is provided, and the humidifying structure is used for spraying water mist;

[0007] A humidity sensor, the humidity sensor is used to detect temperature; there are multiple humidity sensors; the multiple humidity sensors are arranged at intervals;

[0008] A control module is connected to the humidification structure signal, and the control module is connected to the humidity sensor signal; the control module controls the voltage input to the humidification structure according to the humidity detected by the humidity sensor, thereby controlling the humidification rate of the humidification structure.

[0009] Furthermore, the humidification structure comprises:

[0010] Ultrasonic humidifier; the control module is connected to the ultrasonic humidifier signal to control the voltage of the ultrasonic humidifier;

[0011] A humidifying pipe is connected to the ultrasonic humidifier; and a humidifying hole for spraying water mist is provided on the humidifying pipe.

[0012] Furthermore, the humidification structure includes a switch valve disposed at the humidification hole, and the switch valve is used to control the opening and closing of the humidification hole; the switch valve is connected to the control module signal.

[0013] Furthermore, there are multiple humidification pipes, and the multiple humidification pipes are arranged in a one-to-one correspondence with the multiple humidity sensors.

[0014] Furthermore, the humidity control system also includes a temperature sensor, and the temperature sensor is signal-connected to the control module.

[0015] A cold storage comprises a humidity control system, wherein the humidity control system is the humidity control system according to any one of claims 1 to 5, so as to control the humidity in the cold storage through the humidity control system.

[0016] A control method is applicable to the above humidity control system, the control method comprising:

[0017] The humidity sensor detects humidity;

[0018] The humidity detected by the humidity sensor is compared with a set humidity value, and the voltage of the humidification structure is controlled according to the comparison result, thereby controlling the humidification rate of the humidification structure.

[0019] Furthermore, the control method comprises:

[0020] Set up multiple humidity sensors and calculate the average humidity value RH detected by multiple humidity sensors 平均 ;

[0021] Set the humidification threshold RH 开 ,

[0022] If RH 平均 <RH 开 , then the voltage of the humidification structure is controlled on average according to the average humidity value RH;

[0023] If RH 平均 ≥RH 开 , the voltage of the humidifying structure is controlled according to the rate of increase of the ambient humidity.

[0024] Furthermore, the method for controlling the voltage of the humidification structure according to the average humidity value RH includes:

[0025] When RH 平均 ≤RH 开 -ΔRH, the humidification structure is controlled to be turned on at a first voltage value; when RH 开 -ΔRH≤RH 平均 ≤RH 开When the humidification structure is turned on at a second voltage value, the first voltage value is greater than the second voltage value.

[0026] Further, according to the rate of increase of the ambient humidity, the method for controlling the voltage of the humidification structure includes:

[0027] Set the exit humidity RH when the humidification structure stops 停 , set value ΔRH 1 and ΔRH 2 ;

[0028] When RH 开 ≤RH 平均 ≤RH 停 When the ambient humidity increases over a period of time, the rate of increase ΔRH is detected. 增n ; According to ΔRH 增 A voltage of the humidifying structure is controlled.

[0029] Furthermore, according to the rate of increase of ambient humidity ΔRH 增 The method of controlling the voltage of the humidifying structure comprises:

[0030] Setting the threshold ΔRH 增 ;

[0031] When ΔRH 增n <ΔRH 增 , RH n <RH 停 -ΔRH 1 When the voltage value of the humidifying structure is increased, if the voltage value of the humidifying structure is already the highest, the highest voltage value is kept unchanged;

[0032] When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 1 ≤RH n ≤RH 停 -ΔRH 2 , reducing the voltage value of the humidifying structure; if the voltage value of the humidifying structure is already the lowest, keeping the lowest voltage value unchanged;

[0033] When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 2 ≤RH n ≤RH 停 When the humidification structure stops humidifying the corresponding position.

[0034] Furthermore, the control method comprises:

[0035] Setting the exit temperature Tstop when the humidification structure is shut down;

[0036] If the ambient temperature is lower than the exit temperature Tstop within a period of time, the humidification structure is controlled to stop humidification.

[0037] Beneficial effects:

[0038] The humidity control system of the present invention includes a humidification structure, the humidification structure is used to spray water mist; a humidity sensor, the humidity sensor is used to detect temperature; there are multiple humidity sensors; the multiple humidity sensors are arranged at intervals; a control module, the control module is connected to the humidification structure signal, the control module is connected to the humidity sensor signal; the control module controls the voltage input to the humidification structure according to the humidity detected by the humidity sensor, thereby controlling the humidification rate of the humidification structure. With the above arrangement, when the humidity sensor detects that the humidity is low, the control module will control the humidification structure to increase the humidity. At this time, by increasing the voltage of the humidification structure, the working efficiency of the humidification structure is improved, and then the humidification speed is adjusted. Through the multiple humidity sensors arranged at intervals, the humidity at different positions can be detected in a targeted manner, and the humidity at different positions can be controlled in a targeted manner through the humidification structure. In this way, the humidity in the space can be controlled more finely, solving the technical problem of inaccurate humidity in the cold storage in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the structure of a humidity control system used in an embodiment of the present invention;

[0040] Figure 2 is a structural schematic diagram of a humidification structure of a humidity control system adopted in an embodiment of the present invention;

[0041] Figure 3 It is a structural schematic diagram of the control method adopted in the embodiment of the present invention.

[0042] The above drawings include the following reference numerals:

[0043] 1. Humidification structure; 11. Ultrasonic humidifier; 12. Humidification pipeline; 13. Humidification hole; 2. Humidity sensor; 3. Control module; 4. Temperature sensor. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, 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 only 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 creative work should fall within the scope of protection of the present application.

[0045] See also Figures 1 to 3 According to an embodiment of the present invention, a humidity control system is provided, comprising: a humidifying structure 1, the humidifying structure 1 is used to spray water mist; a humidity sensor 2, the humidity sensor 2 is used to detect temperature; the humidity sensor 2 is multiple; the multiple humidity sensors 2 are arranged at intervals; a control module 3, the control module 3 is connected to the humidifying structure 1 by signal, and the control module 3 is connected to the humidity sensor 2 by signal; the control module 3 controls the voltage input to the humidifying structure 1 according to the humidity detected by the humidity sensor 2, thereby controlling the humidification rate of the humidifying structure 1. With the above-mentioned setting, when the humidity sensor 2 detects that the humidity is low, the control module 3 will control the humidifying structure 1 to increase the humidity. At this time, by increasing the voltage of the humidifying structure 1, the working efficiency of the humidifying structure 1 is improved, and then the humidification speed is adjusted. By arranging multiple humidity sensors 2 at intervals, the humidity at different positions can be detected in a targeted manner, and the humidity at different positions can be controlled in a targeted manner by the humidifying structure 1. In this way, the humidity in the space can be controlled more finely, solving the technical problem of inaccurate humidity in the cold storage in the related art.

[0046] In the humidity control system of this embodiment, see Figure 2 The humidification structure 1 includes: an ultrasonic humidifier 11; the control module 3 is connected to the ultrasonic humidifier 11 signal to control the voltage of the ultrasonic humidifier 11; a humidification pipe 12, the humidification pipe 12 is connected to the ultrasonic humidifier; the humidification pipe 12 is provided with a humidification hole 13 for spraying water mist.

[0047] Specifically, the ultrasonic humidifier atomizes water through high-frequency oscillation, and then disperses these tiny water droplets into the air to achieve the humidification effect. Studies have shown that the humidification efficiency of the ultrasonic humidifier increases with the increase of voltage. In this way, by adjusting the voltage of the ultrasonic humidifier, the humidification rate of the humidification structure 1 can be adjusted, which is simple and easy to operate.

[0048] See also Figure 2In the humidity control system of this embodiment, the humidification structure 1 includes a switch valve arranged at the humidification hole 13, and the switch valve is used to control the opening and closing of the humidification hole 13; the switch valve is connected to the control module 3 by signal.

[0049] For details, see Figure 2 In the humidity control system of this embodiment, there are multiple humidification pipes 12, and the multiple humidification pipes 12 are arranged at intervals.

[0050] See also Figure 2 In the humidity control system of this embodiment, there are multiple humidifying holes 13 on the humidifying pipe 12, and the multiple humidifying holes 13 are arranged at intervals. In this way, the humidification efficiency of the humidifying structure 1 can be increased.

[0051] In the humidity control system of this embodiment, there are multiple humidification pipes 12, and the multiple humidification pipes 12 are arranged in one-to-one correspondence with the multiple humidity sensors 2. In this way, the humidity at multiple locations can be detected, so that the humidity of the entire space can be more finely controlled according to the humidity at multiple locations, solving the problem of uneven control of the humidity in the space.

[0052] See also Figure 1 In the humidity control system of this embodiment, the humidity control system further includes a temperature sensor 4, which is signal-connected to the control module 3. In this way, the humidification function of the humidification structure 1 is controlled by two important parameters, humidity and temperature, so as to meet more needs of customers.

[0053] The cold storage of this embodiment includes a humidity control system, and the humidity control system is the above-mentioned humidity control system, so that the humidity in the cold storage can be controlled by the humidity control system.

[0054] Specifically, the humidity at each location is controlled accordingly, and different humidification modes are operated to ensure that the locations with cargo are humidified, and the locations without cargo are not humidified, so as to reduce the energy consumption of the system while ensuring that the actual humidity of the cargo reaches the target humidity.

[0055] The control method of this embodiment is applicable to the above-mentioned humidity control system, and the control method includes: the humidity sensor 2 detects the humidity; the humidity detected by the humidity sensor 2 is compared with the set humidity value, and the voltage of the humidification structure 1 is controlled according to the comparison result, thereby controlling the humidification rate of the humidification structure 1.

[0056] In the control method of this embodiment, see Figure 3The control method includes: setting a plurality of humidity sensors 2, calculating an average humidity value RH average of the humidity detected by the plurality of humidity sensors 2; setting a humidification threshold RH on, if RH average < RH on, controlling the voltage of the humidification structure 1 according to the average humidity value RH average; if RH average ≥ RH on, controlling the voltage of the humidification structure 1 according to the increase rate of the ambient humidity.

[0057] Specifically, RH 开 The humidity is set to start. When the humidity in the warehouse is detected to be ≤RH 开 , humidification starts. RH 平均 It is the average value of humidity in the warehouse detected in real time.

[0058] Specifically, when it is detected that the real-time humidity in the warehouse is low, the rapid humidification mode is entered to achieve rapid humidification and shorten the humidification time.

[0059] When it is detected that the real-time humidity in the warehouse is not low, the intelligent humidification mode is turned on.

[0060] Specifically, when entering the intelligent humidification mode, the operating state of the ultrasonic humidification system and the switch of the humidification pipe orifice valve are controlled to achieve precise humidification, reduce humidification waste, and save energy and electricity; at the same time, excessive humidification is avoided and humidification accuracy is improved.

[0061] In the control method of this embodiment, see Figure 3 The method for controlling the voltage of the humidification structure 1 according to the average humidity value RH includes: when RH 平均 ≤RH 开 -ΔRH, the humidification structure 1 is controlled to be turned on at a first voltage value; when RH 开 -ΔRH≤RH 平均 ≤RH 开 When the humidity value is high, the humidification structure 1 is controlled to be turned on with a second voltage value; wherein the first voltage value is greater than the second voltage value. In this way, the voltage value is controlled according to the measured humidity value. When the humidity value is high, a high voltage is applied to the humidification structure 1, so that the humidification structure 1 is at a higher working efficiency; when the humidity value is low, a low voltage is applied to the humidification structure 1, so that the humidification structure 1 is at a lower working efficiency, thereby achieving precise humidification, reducing humidification waste, and saving energy and electricity.

[0062] See also Figure 3 In the control method of this embodiment, the method for controlling the voltage of the humidification structure 1 according to the rate of increase of the ambient humidity includes: setting the exit humidity RH when the humidification structure 1 is shut down 停 , set value ΔRH 1 and ΔRH 2 ; When RH 开 ≤RH 平均 ≤RH停 When the ambient humidity increases over a period of time, the rate of increase ΔRH is detected. 增n ; According to ΔRH 增 The voltage of the humidifying structure 1 is controlled.

[0063] Specifically, ΔRH 增n The real-time humidity increase rate of each humidity detection point within a cycle; ΔRH 增 It is the humidity increase speed parameter, which should be set according to the actual situation.

[0064] In the control method of this embodiment, see Figure 3 , according to the rate of increase of ambient humidity ΔRH 增 The method for controlling the voltage of the humidification structure 1 includes: setting a threshold ΔRH 增 ; When ΔRH 增n <ΔRH 增 , RH n <RH 停 -ΔRH 1 When ΔRH is , the voltage value of the humidification structure 1 is increased; if the voltage value of the humidification structure 1 is already the highest, the highest voltage value is kept unchanged; when ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 1 ≤RH n ≤RH 停 -ΔRH 2 , reduce the voltage value of the humidification structure 1; if the voltage value of the humidification structure 1 is already the lowest, keep the lowest voltage value unchanged; when ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 2 ≤RH n ≤RH 停 When the humidification structure 1 is controlled to stop humidifying the corresponding position.

[0065] Specifically, RH n The real-time humidity at each humidity detection point; ΔRH 1 The value of is generally 10%, ΔRH 2 The value of is generally 5%, ΔRH 1 and ΔRH 2 It can be set according to actual situation.

[0066] In the control method of this embodiment, see Figure 3 The control method includes: setting the exit temperature T when the humidification structure 1 is shut down 停 ; If the ambient temperature is lower than the exit temperature T for a period of time 停, the humidification structure 1 is controlled to stop humidification.

[0067] The humidity control system of this embodiment is described as follows:

[0068] The present invention provides a cold storage precision humidity control system and control method, the cold storage precision humidity control system comprises a group controller, an ultrasonic humidifier 11, a cold air blower, a humidification pipe 12, a humidification air valve and a plurality of humidity sensors 2. Among them, the humidity sensors 2 are distributed in a grid to detect the humidity at each position of the cold storage in real time; the humidification pipe 12 is evenly opened with holes, and every 5 holes are controlled by a switch valve. When the switch valve is opened, the humidification mist can enter the warehouse through the hole for humidification, and when the switch valve is closed, the humidification hole 13 is closed. The group controller can automatically control the number of ultrasonic humidifiers to be opened, the operating voltage, etc. according to the humidity detected by the plurality of humidity sensors 2, and automatically control the switch of the switch valve of the humidification pipe 12 by detecting the humidity, so as to ensure that the position with goods is humidified, and the position without goods is not humidified, so as to reduce the energy consumption of the system while ensuring that the actual humidity of the goods reaches the target humidity.

[0069] The group controller receives multiple real-time humidity detections, calculates the average humidity, compares the average humidity with the set humidity, and controls the start and stop of the ultrasonic humidifier 11. The specific control method is as follows:

[0070] Humidification system operation mode control:

[0071] When RH is detected for 5 consecutive seconds 平均 <RH 开 , enter the fast humidification mode;

[0072] When RH is detected for 5 consecutive seconds 开 ≤RH 平均 ≤RH 停 , enter the intelligent humidification mode;

[0073] When RH is detected for 5 consecutive seconds 平均 >RH 停 , exit humidification mode.

[0074] Control of the number of ultrasonic humidifiers turned on, operating voltage, etc.:

[0075] Ultrasonic humidifiers atomize water through high-frequency oscillation, and then disperse these tiny water droplets into the air to achieve the humidification effect. Studies have shown that the humidification efficiency of ultrasonic humidifiers increases with the increase of voltage.

[0076] When RH is detected for 5 consecutive seconds 平均 ≤RH 开 , enter the fast humidification mode, all ultrasonic humidifiers are turned on, among which: when RH 平均 ≤RH 开-ΔRH, all ultrasonic humidifiers are turned on with a voltage of 36V; when RH 开 -ΔRH≤RH 平均 ≤RH 开 , all ultrasonic humidifiers are turned on with a voltage of 24V. (ΔRH is generally 30%, which can be set according to actual conditions).

[0077] After entering the intelligent humidification mode, the humidity increase rate of each location in each cycle is calculated with a cycle of 3 minutes.

[0078] When ΔRH 增n <ΔRH 增 RH n <RH 停 -ΔRH 1 When the voltage of the ultrasonic humidifier at the corresponding position increases, if the voltage is already the highest, it will remain unchanged.

[0079] When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 1 ≤RH n ≤RH 停 -ΔRH 2 When the voltage of the ultrasonic humidifier at the corresponding position decreases, if the voltage is already the lowest, it remains unchanged.

[0080] When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH 2 ≤RH n ≤RH 停 When all the openings of the humidification pipeline corresponding to the ultrasonic humidifier are closed, the ultrasonic humidifier is turned off.

[0081] Note: Goods should be placed near the ultrasonic humidifier first.

[0082] Ultrasonic humidifier water replenishment system:

[0083] A water storage tank is set at the water receiving tray of the cooling fan in the cold storage. The defrosting water of the cooling fan is filtered and stored in the water storage tank. When the water level in the water tank of the ultrasonic humidifier 11 is lower than the designed minimum water level, the water pump and water pipe valve corresponding to the ultrasonic humidifier 11 are turned on to add water from the water storage tank for ultrasonic humidification. This water adding system can realize system self-sufficiency without manual water adding.

[0084] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0085] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0086] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0087] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0088] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A humidity control system, characterized in that: include: A humidifying structure, wherein the humidifying structure is used for spraying water mist; A humidity sensor, the humidity sensor is used to detect temperature; there are multiple humidity sensors; the multiple humidity sensors are arranged at intervals; A control module is connected to the humidification structure signal, and the control module is connected to the humidity sensor signal; the control module controls the voltage input to the humidification structure according to the humidity detected by the humidity sensor, thereby controlling the humidification rate of the humidification structure.

2. The humidity control system according to claim 1, characterized in that: The humidification structure comprises: Ultrasonic humidifier; the control module is connected to the ultrasonic humidifier signal to control the voltage of the ultrasonic humidifier; A humidifying pipe is connected to the ultrasonic humidifier; and a humidifying hole for spraying water mist is provided on the humidifying pipe.

3. The humidity control system according to claim 2, characterized in that: The humidification structure includes a switch valve arranged at the humidification hole, and the switch valve is used to control the opening and closing of the humidification hole; the switch valve is connected to the control module signal.

4. The humidity control system according to claim 3, characterized in that: There are a plurality of humidification pipes, and the plurality of humidification pipes are arranged in a one-to-one correspondence with the plurality of humidity sensors.

5. The humidity control system according to claim 1, characterized in that: The humidity control system further includes a temperature sensor, and the temperature sensor is signal-connected to the control module.

6. A cold storage, comprising a humidity control system, characterized in that: The humidity control system is the humidity control system according to any one of claims 1 to 5, so that the humidity in the cold storage can be controlled by the humidity control system.

7. A control method, applicable to the humidity control system according to any one of claims 1 to 5, characterized in that: The control method comprises: The humidity sensor detects humidity; The humidity detected by the humidity sensor is compared with a set humidity value, and the voltage of the humidification structure is controlled according to the comparison result, thereby controlling the humidification rate of the humidification structure.

8. The control method according to claim 7, characterized in that: The control method comprises: Set up multiple humidity sensors and calculate the average humidity value RH detected by multiple humidity sensors 平均 ; Set the humidification threshold RH 开 ; If RH 平均 <RH 开 , then the voltage of the humidification structure is controlled on average according to the average humidity value RH; If RH 平均 ≥RH 开 , the voltage of the humidifying structure is controlled according to the rate of increase of the ambient humidity.

9. The control method according to claim 8, characterized in that: The method for controlling the voltage of the humidification structure according to the average humidity value RH comprises: When RH 平均 ≤RH 开 -ΔRH, the humidification structure is controlled to be turned on at a first voltage value; when RH 开 -ΔRH≤RH 平均 ≤RH 开 When the humidification structure is turned on at a second voltage value, the first voltage value is greater than the second voltage value.

10. The control method according to claim 8, characterized in that: The method of controlling the voltage of the humidifying structure according to the rate of increase of the ambient humidity includes: Set the exit humidity RH when the humidification structure stops 停 , set values ​​ΔRH1 and ΔRH2; When RH 开 ≤RH 平均 ≤RH 停 When the ambient humidity increases over a period of time, the rate of increase ΔRH is detected. 增n ; According to ΔRH 增 A voltage of the humidifying structure is controlled.

11. The control method according to claim 10, characterized in that: According to the rate of increase of ambient humidity ΔRH 增 The method of controlling the voltage of the humidifying structure comprises: Setting the threshold ΔRH 增 ; When ΔRH 增n <ΔRH 增 , RH n <RH 停 -ΔRH1, increase the voltage value of the humidification structure; if the voltage value of the humidification structure is already the highest, keep the highest voltage value unchanged; When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH1≤RH n ≤RH 停 -ΔRH2, reducing the voltage value of the humidification structure; if the voltage value of the humidification structure is already the lowest, keeping the lowest voltage value unchanged; When ΔRH 增n ≥ΔRH 增 RH 停 -ΔRH2≤RH n ≤RH 停 When the humidification structure stops humidifying the corresponding position.

12. The control method according to claim 7, characterized in that: The control method comprises: Set the exit temperature T when the humidification structure stops 停 ; If the ambient temperature is lower than the exit temperature T for a period of time 停 , the humidification structure is controlled to stop humidification.

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