Air treatment equipment and control method

Abstract

The invention discloses air treatment equipment and a control method. The air treatment apparatus includes: a moisture absorbing material configured to absorb moisture; the moisture absorption material is arranged on the heating unit, and the heating unit is arranged to enable the moisture absorbed by the moisture absorption material to be released; the generating material is arranged on the heating unit and is used for splitting water molecules to generate hydrated anions; and the fan is arranged to form a wind beam flowing from the upstream of the heating unit to the downstream of the heating unit. A moisture absorption process: operating the fan and closing the heating unit; and the hydrated negative ion generation process comprises the steps of operating the fan and the heating unit. According to the air treatment equipment, the operation of manually adding water by a user is omitted, the environment humidity cannot be increased, and the practicability is better.

Description

Technical Field

[0001] The present invention relates to electrical equipment technology, and more particularly to an air handling device and a control method thereof. Background Art

[0002] According to the theory adopted by the Joint Commission for the Atmosphere of the International Union of Geodesy and Geophysics, healthy air negative ions mainly include O2-(H2O)n, OH-(H2O)n, CO4-(H2O)n, etc., which are called "negative alkaline ions" or "hydrated negative ions". Hydrated negative ions have a half-life of 60s and a long life. In life, after a thunderstorm or beside a waterfall, people will feel the air is fresh because there are a lot of "hydrated negative ions" in the air.

[0003] The related technology provides a hydrated air negative ion generator, including tourmaline, a pure water tank, a water volatilization device and a fan. The pure water tank is filled with pure water. The water volatilization device volatilizes the pure water in the pure water tank. The volatilized pure water passes through the tourmaline under the action of the fan. The tourmaline splits water molecules to generate hydrated negative ions. The hydrated negative ions enter the environment, thereby improving the environmental air quality.

[0004] The hydrated air negative ion generator has a low degree of automation. When the pure water tank is short of water, the user needs to add water manually, which is not very practical. Summary of the invention

[0005] The present application provides an air treatment device with better practicality.

[0006] The present application also provides a control method for air handling equipment.

[0007] The present application provides an air treatment device, comprising: a hygroscopic material, configured to absorb moisture; a heating unit, the hygroscopic material is arranged on the heating unit, and the heating unit is arranged to release the moisture absorbed by the hygroscopic material; a generating material, arranged on the heating unit and configured to split water molecules to generate hydrated negative ions; and a fan, configured to form a wind beam flowing from the upstream of the heating unit to the downstream of the heating unit.

[0008] In some exemplary embodiments, the heating unit includes: a first heating element, the first heating element is provided with a first functional layer, and the first functional layer includes the hygroscopic material and the generating material.

[0009] In some exemplary embodiments, the first functional layer includes a mixed layer, which is disposed on at least one of the upstream side and the downstream side of the first heating element, and the composition of at least one layer of the mixed layer includes both the hygroscopic material and the generating material.

[0010] In some exemplary embodiments, the components of the at least one blended layer also include a binder. In the at least one blended layer, the weight of the hygroscopic material is 3% to 90%, the weight of the generated material is 9.5% to 77%, and the weight of the binder is 0.5% to 20%.

[0011] In some exemplary embodiments, the first functional layer includes: a hygroscopic layer disposed on an upstream side of the first heating element and including the hygroscopic material; and a generating layer disposed on a downstream side of the first heating element and including the generating material.

[0012] In some exemplary embodiments, along the blowing direction of the wind beam, a size ratio of the moisture absorbing layer to the size of the generating layer is 1:9 to 9:1.

[0013] In some exemplary embodiments, the first functional layer includes: a hygroscopic layer, which is disposed on the first heating element and includes the hygroscopic material; and a generating layer, which is disposed on a side of the hygroscopic layer facing away from the first heating element and includes the generating material.

[0014] In some exemplary embodiments, the weight ratio of the hygroscopic material to the generating material is (30-70):(27-67).

[0015] In some exemplary embodiments, the heating unit includes: a first heating element, the first heating element is provided with a first functional layer, the first functional layer is a hygroscopic layer, and the hygroscopic layer includes the hygroscopic material; and a second heating element, arranged downstream of the first heating element, the second heating element is provided with a second functional layer, the second functional layer is a generating layer, and the generating layer includes the generating material.

[0016] In some exemplary embodiments, an adhesion strength improving layer for improving adhesion strength is provided between the second heating element and the second functional layer.

[0017] In some exemplary embodiments, an adhesion strength improving layer for improving adhesion strength is provided between the first heating element and the first functional layer.

[0018] In some exemplary embodiments, a component of the adhesion strength improving layer includes at least one of silica sol, alumina sol, pseudo-boehmite, and bentonite.

[0019] In some exemplary embodiments, the second heating element includes at least one of a thermistor and a graphene heating film.

[0020] In some exemplary embodiments, the first heating element includes a thermistor having a honeycomb structure.

[0021] In some exemplary embodiments, a temperature detection unit is provided downstream of the first heating element.

[0022] In some exemplary embodiments, the hygroscopic material includes at least one of molecular sieves, activated alumina, silica gel, and a metal organic framework.

[0023] In some exemplary embodiments, the component of the generating material includes at least one of tourmaline and negative ion powder.

[0024] In some exemplary embodiments, the fan is located upstream or downstream of the heating unit.

[0025] In some exemplary embodiments, the air treatment device also includes: a humidity detection unit, configured to detect the humidity of the air upstream of the hygroscopic material and the humidity of the air downstream of the hygroscopic material; and a control unit, the humidity detection unit, the fan and the heating unit are all electrically connected to the control unit.

[0026] The embodiment of the present invention also provides a control method for air treatment equipment, including:

[0027] Dehumidification process: running the fan and turning off the heating unit;

[0028] The process of generating hydrated negative ions: operating the fan and the heating unit.

[0029] In some exemplary embodiments, during the moisture absorption process, the operating speed of the fan is a first set speed; during the generation of hydrated negative ions, the operating speed of the fan is a second set speed, and the second set speed is not greater than the first set speed.

[0030] In some exemplary embodiments, the first set rotational speed is A, and the second set rotational speed is 0.05*A to 0.25*A.

[0031] In some exemplary embodiments, the control method further includes: during the moisture absorption process, based on the running time of the fan reaching a first set time, turning off the fan or executing the process of generating hydrated negative ions.

[0032] In some exemplary embodiments, the control method further includes: during the desiccant process, obtaining the air humidity upstream and downstream of the desiccant material, and based on the air humidity difference between the upstream and downstream of the desiccant material reaching a first set value, turning off the fan or executing the process of generating hydrated negative ions.

[0033] In some exemplary embodiments, the heating unit includes a first heating element, and a temperature detection unit is provided downstream of the first heating element. The control method also includes: during the process of generating hydrated negative ions, obtaining the temperature downstream of the first heating element, and controlling the first heating element according to the temperature so that the temperature downstream of the first heating element is maintained at a set temperature for a second set time period, and then turning off the first heating element or performing the moisture absorption process.

[0034] In some exemplary embodiments, the heating unit further includes a second heating element, and the control method further includes: during the process of generating hydrated negative ions, controlling the second heating element to heat at a set heating temperature, and turning off the second heating element when turning off the first heating element.

[0035] In some exemplary embodiments, the set temperature is 75°C to 150°C, and the set heating temperature is 60°C to 120°C.

[0036] In some exemplary embodiments, the heating unit includes a first heating element, and a temperature detection unit is provided downstream of the first heating element. The control method also includes: during the process of generating hydrated negative ions, obtaining the temperature downstream of the first heating element, and controlling the first heating element according to the temperature so that the temperature downstream of the first heating element is maintained at the corresponding set temperature in stages, and then turning off the first heating element or performing the moisture absorption process.

[0037] In some exemplary embodiments, for any two adjacent stages, the set temperature at the downstream of the first heating element in the latter stage is ≥ the set temperature at the downstream of the first heating element in the former stage.

[0038] In some exemplary embodiments, the temperature downstream of the first heating element is maintained at corresponding set temperatures in five stages;

[0039] The first stage: the set temperature at the downstream of the first heating element is 30°C to 40°C, and the duration is 2min to 20min;

[0040] The second stage: the set temperature at the downstream of the first heating element is 40°C to 50°C, and the duration is 2min to 20min;

[0041] The third stage: the set temperature at the downstream of the first heating element is 50°C to 60°C, and the duration is 2min to 20min;

[0042] Stage 4: the set temperature at the downstream of the first heating element is 60° C. to 75° C., and the duration is 2 min to 20 min;

[0043] The fifth stage: the set temperature at the downstream of the first heating element is 75° C. to 150° C., and the duration is 2 min to 20 min.

[0044] In some exemplary embodiments, the heating unit further includes a second heating element, and the control method further includes: controlling the second heating element to heat at a set heating temperature, and turning off the second heating element when turning off the first heating element.

[0045] In some exemplary embodiments, the set heating temperature is 60°C to 120°C.

[0046] Compared with the related art, the air treatment equipment provided by the present application has the following dehumidification process: the fan is running, the heating unit is turned off, and the ambient air forms a wind beam blowing from the upstream of the heating unit to the downstream of the heating unit under the action of the fan, and the hygroscopic material adsorbs and stores the moisture in the wind beam; the process of generating hydrated negative ions: the fan is running, and the ambient air forms a wind beam blowing from the upstream of the heating unit to the downstream of the heating unit under the action of the fan, and the heating unit is running, and the heating unit releases the moisture adsorbed by the hygroscopic material in a concentrated manner, and the large amount of released moisture passes through the generating material, and the generating material decomposes water molecules to generate a large amount of hydrated negative ions, and the hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality; the air treatment equipment eliminates the need for users to manually add water, and will not increase the ambient humidity, and its practicality is better.

[0047] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0049] Figure 1 A schematic diagram of the structure of an air treatment device provided for some embodiments of the present application;

[0050] Figure 2 for Figure 1 A schematic structural diagram of an example in which the first heating element is provided with a mixed layer;

[0051] Figure 3 for Figure 1 A schematic structural diagram of an example in which the first heating element is provided with a moisture absorbing layer and a generating layer;

[0052] Figure 4A schematic diagram of the structure of air treatment equipment provided for other embodiments of the present application;

[0053] Figure 5 A flow chart of a control method for an air treatment device provided in some embodiments of the present application;

[0054] Figure 6 A flow chart of a control method for an air treatment device provided in some other embodiments of the present application.

[0055] The corresponding relationship between the reference numerals and the component names is as follows:

[0056] 110 a first heating element, 120 a second heating element, 200 a fan, 310 a mixing layer, 320 a moisture absorbing layer, 330 a generating layer, 400 a temperature detecting unit, and 500 a humidity detecting unit. DETAILED DESCRIPTION

[0057] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0058] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme defined by the claims. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0059] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0060] The present application provides an air treatment device, such as Figures 1 to 4 As shown, it includes: a hygroscopic material, which is configured to absorb moisture; a heating unit, the hygroscopic material is arranged in the heating unit, and the heating unit is configured to release the moisture absorbed by the hygroscopic material; a generating material, which is arranged in the heating unit, and the generating material is configured to split water molecules to generate hydrated negative ions; and a fan 200, which is configured to form a wind beam flowing from the upstream of the heating unit to the downstream of the heating unit.

[0061] Desiccant process: the fan 200 is running, and the heating unit is turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the heating unit to the downstream of the heating unit. The desiccant material absorbs and stores moisture in the wind beam.

[0062] Process of generating hydrated negative ions: When the fan 200 is running, the ambient air forms a wind beam that is blown from the upstream of the heating unit to the downstream of the heating unit under the action of the fan 200. The heating unit is running, and the water adsorbed by the hygroscopic material is released in a concentrated manner. In the process of passing through the generating material, the generating material decomposes water molecules to generate a large number of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality.

[0063] The air treatment equipment saves the user from the operation of manually adding water and does not increase the ambient humidity, so it is more practical.

[0064] In some exemplary embodiments, Figures 1 to 3 As shown, the heating unit includes: a first heating element 110, the first heating element 110 is provided with a first functional layer, the first functional layer includes a hygroscopic material and a generating material, and the implementation scheme of this embodiment is relatively simple and can be easily manufactured.

[0065] In some examples, the first heating element 110 may be an electric auxiliary heating device of an air handling device, such as a PTC heating element inherent in an air conditioner, and the hygroscopic material and / or the hygroscopic material may be disposed on a metal sheet of the electric auxiliary heating device.

[0066] In some examples, such as Figure 2 As shown, the first functional layer includes a mixed layer 310, which is disposed on at least one of the upstream side and the downstream side of the first heating element 110, and the composition of at least one layer of the mixed layer 310 includes both hygroscopic material and generating material.

[0067] Desiccant process: the fan 200 is running and the first heating element 110 is turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110. When the wind beam passes through the hygroscopic material, the hygroscopic material absorbs and stores moisture in the wind beam.

[0068] Process of generating hydrated negative ions: When the fan 200 is running, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110 under the action of the fan 200. The first heating element 110 is running, and the first heating element 110 releases the moisture adsorbed by the hygroscopic material in a concentrated manner. In the process of passing through the generating material, the generating material decomposes water molecules to generate a large number of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality.

[0069] In some embodiments, each blended layer 310 includes a hygroscopic material, a generating material, and a binder, wherein the weight of the hygroscopic material is 3% to 90%, the weight of the generating material is 9.5% to 77%, and the weight of the binder is 0.5% to 20%.

[0070] In some embodiments, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 60%, and the weight proportion of the generating material is set to 35%. The concentration of negative ions generated by this scheme is 12 to 19 million / m 3 .

[0071] In other embodiments, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 30%, and the weight proportion of the generating material is set to 65%. The concentration of negative ions generated by this scheme is 8 to 17 million / m 3 .

[0072] In the comparative embodiment, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 92%, and the weight proportion of the generating material is set to 3%. The concentration of negative ions generated by this scheme is 2 to 3.5 million / m 3 .

[0073] Through a large number of experiments, it was found that when the weight proportion of the hygroscopic material is set to 35% to 70%, the weight proportion of the generating material is set to 27% to 62%, and the weight proportion of the binder is set to 3% to 10%, the concentration of the negative ions generated is relatively high, and these negative ions contain a large number of hydrated negative ions. Among them, the temperature of the wind beam at the downstream of the first heating element 110 is maintained at 75°C to 150°C, and the temperature control method of the first heating element 110 is the same during the experiment.

[0074] In other examples, such as Figure 1 As shown, the first functional layer includes: a hygroscopic layer 320, which is disposed on the upstream side of the first heating element 110 and includes a hygroscopic material; and a generating layer 330, which is disposed on the downstream side of the first heating element 110 and includes a generating material.

[0075] Desiccant process: the fan 200 is running and the first heating element 110 is turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110. The wind beam first passes through the hygroscopic material, and in the process of passing through the adsorption material, the hygroscopic material adsorbs and stores the moisture in the wind beam.

[0076] Process of generating hydrated negative ions: When the fan 200 is running, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110 under the action of the fan 200. The first heating element 110 is running, and the first heating element 110 releases the moisture adsorbed by the hygroscopic material in a concentrated manner. A large amount of released moisture passes through the generating material, and in the process of passing through the generating material, the generating material decomposes water molecules to generate a large amount of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality.

[0077] It may be that, along the blowing direction of the wind beam, the ratio of the size of the hygroscopic layer 320 (ie, the height along the blowing direction of the wind beam) to the size of the generating layer 330 (ie, the height along the blowing direction of the wind beam) is 1:9 to 9:1.

[0078] In some embodiments, along the blowing direction of the wind beam, the size ratio of the moisture absorption layer 320 is set to 60%, and the size ratio of the generating layer 330 is set to 40%. The concentration of negative ions generated by this solution is 12 to 15 million / m 3 .

[0079] In other embodiments, along the blowing direction of the wind beam, the size ratio of the moisture absorption layer 320 is set to 85%, and the size ratio of the generating layer 330 is set to 15%. The concentration of negative ions generated by this solution is 6 to 10 million / m 3 .

[0080] In some other embodiments, along the blowing direction of the wind beam, the size ratio of the moisture absorption layer 320 is set to 25%, and the size ratio of the generating layer 330 is set to 75%. The concentration of negative ions generated by this solution is 5 to 8 million / m 3 .

[0081] In the comparative embodiment, along the blowing direction of the wind beam, the size ratio of the moisture absorption layer 320 is set to 95%, and the size ratio of the generating layer 330 is set to 5%. The concentration of negative ions generated by this scheme is 1 to 2.2 million / m 3 .

[0082] Through a large number of experiments, it is found that along the blowing direction of the wind beam, the size ratio of the hygroscopic layer 320 to the generating layer 330 is (35-65): (65-35), so that the concentration of negative ions generated is relatively high, and these negative ions contain a large number of hydrated negative ions. Among them, the temperature of the wind beam downstream of the first heating element 110 is maintained at 75°C to 150°C, and the temperature control method of the first heating element 110 is the same during the experiment.

[0083] In some other examples, such as Figure 3 As shown, the first functional layer includes: a hygroscopic layer 320, which is arranged on the first heating element 110 and includes a hygroscopic material; and a generating layer 330, which is arranged on the side of the hygroscopic layer 320 facing away from the first heating element 110 and includes a generating material (of course, the generating layer 330 and the hygroscopic layer 320 located downstream may be exchanged in setting order, and of course, the generating layer 330 and the hygroscopic layer 320 located upstream may be exchanged in setting order, and of course, the generating layer 330 and the hygroscopic layer 320 may be arranged only on the upstream side of the first heating element 110, and of course, the generating layer 330 and the hygroscopic layer 320 may be arranged only on the downstream side of the first heating element 110, etc.).

[0084] Desiccant process: the fan 200 is running and the first heating element 110 is turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110. When the wind beam passes through the hygroscopic material, the hygroscopic material absorbs and stores moisture in the wind beam.

[0085] Process of generating hydrated negative ions: When the fan 200 is running, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the first heating element 110 under the action of the fan 200. The first heating element 110 is running, and the first heating element 110 releases the moisture adsorbed by the hygroscopic material in a concentrated manner. In the process of passing through the generating material, the generating material decomposes water molecules to generate a large number of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality.

[0086] Preferably, the upstream side and the downstream side of the first heating element 110 are sequentially provided with a moisture absorbing layer 320 and a generating layer 330, so that the concentration of the generated negative ions is relatively high.

[0087] The weight ratio of the hygroscopic material to the generating material may be (60-94):(3-25), and the hygroscopic material is mixed with a binder, and the generating material is also mixed with a binder.

[0088] In some embodiments, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 88%, and the weight proportion of the generating material is set to 7%. The concentration of negative ions generated by this scheme is 11 to 18 million / m 3 .

[0089] In the comparative embodiment, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 50%, and the weight proportion of the generating material is set to 45%. The concentration of negative ions generated by this scheme is 5 to 8 million / m 3 .

[0090] Through a large number of experiments, it was found that the weight ratio of the hygroscopic material to the generating material is (75-90): (7-22), and the concentration of the negative ions generated is relatively high, and these negative ions contain a large number of hydrated negative ions. The temperature of the air beam downstream of the first heating element 110 is maintained at 75°C to 150°C, and the temperature control method of the first heating element 110 is the same during the experiment.

[0091] In some other exemplary embodiments, Figure 4 As shown, the heating unit includes: a first heating element 110, the first heating element 110 is provided with a first functional layer, the first functional layer is a hygroscopic layer 320, and the hygroscopic layer 320 includes a hygroscopic material; and a second heating element 120, the second heating element 120 is arranged downstream of the first heating element 110, the second heating element 120 is provided with a second functional layer, the second functional layer is a generating layer 330, and the generating layer 330 includes a generating material. The hygroscopic layer 320 is arranged on at least one of the upstream side and the downstream side of the first heating element 110, and the generating layer 330 is arranged on at least one of the upstream side and the downstream side of the second heating element 120.

[0092] Desiccant process: the fan 200 is running, and the first heating element 110 and the second heating element 120 are both turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the first heating element 110 to the downstream of the second heating element 120. The wind beam first passes through the hygroscopic material, and in the process of passing through the adsorption material, the hygroscopic material absorbs and stores the moisture in the wind beam.

[0093] Process of generating hydrated negative ions: The fan 200 is running. Under the action of the fan 200, the ambient air forms a wind beam that blows from the upstream of the first heating element 110 to the downstream of the second heating element 120. The first heating element 110 and the second heating element 120 are both running. The first heating element 110 releases the moisture adsorbed by the hygroscopic material in a concentrated manner. A large amount of released moisture passes through the generating material with the wind beam, and in the process of passing through the generating material, the generating material decomposes water molecules to generate a large amount of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam to improve the ambient air quality. The second heating element 120 is used to adaptively heat the generating material to increase the amount of hydrated negative ions generated.

[0094] The heating temperature of the second heating member 120 may be maintained at 60°C to 120°C.

[0095] In some examples, the first heating element 110 and the second heating element 120 can be separately arranged or integrally arranged. The first heating element 110 and the second heating element 120 can be electric auxiliary heating devices of air handling equipment, such as PTC heating elements in the air conditioner, and the hygroscopic material and / or the hygroscopic material can be arranged on the metal sheet of the electric auxiliary heating device.

[0096] In some embodiments, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 60%, the weight proportion of the generating material is set to 35%, and the heating temperature of the second heating element 120 is maintained at 90°C. The concentration of negative ions generated by this scheme is 25 to 29 million / m 3 .

[0097] In other embodiments, the weight proportion of the binder is set to 5%, the weight proportion of the hygroscopic material is set to 60%, the weight proportion of the generating material is set to 35%, and the heating temperature of the second heating element 120 is maintained at 40°C. The concentration of negative ions generated by this scheme is 8 to 13 million / m 3 .

[0098] Through a large number of experiments, it is found that the heating temperature of the second heating element 120 is maintained at 80°C to 100°C, so that the concentration of negative ions generated is relatively high, and these negative ions contain a large number of hydrated negative ions. Among them, the temperature of the wind beam at the downstream of the first heating element 110 is maintained at 75°C to 150°C, and the temperature control method of the first heating element 110 is the same during the experiment.

[0099] In some exemplary embodiments, Figure 1 and Figure 4As shown, the first heating element 110 includes a thermistor with a honeycomb structure, which ensures that the first heating element 110 has good ventilation. Since the thermistor is a metal part, the adhesion of the hygroscopic material and / or the generated material on the thermistor is poor, and the frequent heating and cooling of the thermistor easily causes the hygroscopic material and / or the generated material to fall off, so an adhesion strength enhancement layer is first arranged on the thermistor, and then a hygroscopic material and / or the generated material is arranged on the adhesion strength enhancement layer to enhance the adhesion strength of the hygroscopic material and / or the generated material, so that the hygroscopic material and / or the generated material is less likely to fall off.

[0100] In some exemplary embodiments, Figure 4 As shown, the second heating element 120 includes at least one of a thermistor and a graphene heating film. When the second heating element 120 includes a thermistor, an adhesion strength enhancement layer may be firstly provided on the surface of the second heating element 120, and then a generated material may be provided on the adhesion strength enhancement layer to enhance the adhesion strength of the generated material, so as to solve the problem that the generated material is easy to fall off.

[0101] In some embodiments, the adhesion strength enhancing layer can be made by drying and calcining after impregnation. The composition of the adhesion strength enhancing layer can include at least one of silica sol, aluminum sol, pseudo-boehmite and bentonite, all of which can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should belong to the protection scope of this application.

[0102] It may be that the hygroscopic material includes at least one of molecular sieves, activated alumina, silica gel and metal organic frameworks; it may be that the components of the generated material include at least one of tourmaline and negative ion powder, and the negative ion powder may be tourmaline powder, modified tourmaline powder, rare earth element powder, etc.; it may be that the fan 200 is located upstream or downstream of the heating unit; all of the above can achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should all fall within the scope of protection of the present application.

[0103] In some embodiments, Figure 1 and Figure 4 As shown, the fan 200 is located downstream of the first heating element 110, and the fan 200 forms a wind beam flowing from the upstream of the first heating element 110 to the downstream of the first heating element 110 in a negative pressure suction manner. In other embodiments, the fan 200 is located upstream of the first heating element 110, and the fan 200 forms a wind beam flowing from the upstream of the first heating element 110 to the downstream of the first heating element 110 in a positive pressure blowing manner.

[0104] In some exemplary embodiments, Figure 1 and Figure 4As shown, a temperature detection unit 400 is provided downstream of the first heating element 110, and the temperature detection unit 400 is configured to detect the temperature of the wind beam downstream of the first heating element 110. In this way, the heating power of the first heating element 110 is adjusted according to the temperature data detected by the temperature detection unit 400, so that the temperature of the wind beam downstream of the first heating element 110 can be controlled, so as to achieve the purpose of controlling the generation speed of hydrated negative ions. Among them, the temperature detection unit 400 is configured as a temperature detection sensor.

[0105] In some exemplary embodiments, Figure 1 and Figure 4 As shown, the air treatment device also includes: a humidity detection unit 500, which is configured to detect the humidity of the air upstream of the hygroscopic material and the humidity of the air downstream of the hygroscopic material; and a control unit, the humidity detection unit 500, the fan 200 and the heating unit are all electrically connected to the control unit.

[0106] During the moisture absorption process, the humidity detection unit 500 obtains the air humidity upstream and downstream of the hygroscopic material, and the control unit turns off the fan 200 or performs the process of generating hydrated negative ions when the difference in air humidity upstream and downstream of the hygroscopic material reaches a first set value. The first set value may be set to no more than 3%, at which time the moisture adsorbed by the hygroscopic material is basically saturated, so turning off the fan 200 by the control unit can save energy, and of course the control unit can also perform the process of generating hydrated negative ions to improve the ambient air quality.

[0107] In some embodiments, Figure 1 and Figure 4 As shown, the humidity detection unit 500 includes a first humidity sensor and a second humidity sensor, which are respectively arranged upstream and downstream of the first heating element 110, and the first humidity sensor and the second humidity sensor are both electrically connected to the control unit. Specifically, the first humidity sensor is arranged upstream of the first heating element 110, and the second humidity sensor is arranged downstream of the first heating element 110; during the moisture absorption process, the control unit controls the operation of the fan 200, and the ambient air forms a wind beam flowing from the upstream of the first heating element 110 to the downstream of the first heating element 110 under the action of the fan 200, and the first humidity sensor detects the air humidity of the wind beam upstream of the first heating element 110, and the second humidity sensor detects the air humidity of the wind beam downstream of the first heating element 110. Since the moisture-absorbing material absorbs the moisture in the wind beam during the process of the wind beam passing through the first heating element 110, the percentage of the air humidity of the wind beam detected by the first humidity sensor upstream of the first heating element 110 is not less than the percentage of the air humidity of the wind beam detected by the second humidity sensor downstream of the first heating element 110.

[0108] In some embodiments, the air treatment device further includes: a housing having an air duct (not shown in the figure), and the heating unit and the fan 200 are both arranged in the air duct. When the fan 200 is running, the ambient air enters the air duct from the air inlet of the air duct, and then passes through the heating unit, the hygroscopic material and the generating material, and then is discharged back to the environment from the air outlet of the air duct.

[0109] By using the air treatment equipment provided in the present application, the process of generating hydrated negative ions can produce negative ions with a concentration of 5 million to 30 million per cubic centimeter, and these negative ions contain a large number of hydrated negative ions.

[0110] Among them, air treatment equipment includes air conditioners and air purifiers.

[0111] The embodiment of the present invention also provides a control method for air treatment equipment, such as Figure 5 and Figure 6 As shown, including:

[0112] Dehumidification process: run the fan 200 and turn off the heating unit;

[0113] Process of generating hydrated negative ions: operating the fan 200 and operating the heating unit.

[0114] Desiccant process: the fan 200 is running, and the heating unit is turned off. Under the action of the fan 200, the ambient air forms a wind beam that is blown from the upstream of the heating unit to the downstream of the heating unit. The desiccant material absorbs and stores moisture in the wind beam.

[0115] Process of generating hydrated negative ions: When the fan 200 is running, the ambient air forms a wind beam that is blown from the upstream of the heating unit to the downstream of the heating unit under the action of the fan 200. The heating unit is running, and the water adsorbed by the hygroscopic material is released in a concentrated manner. In the process of passing through the generating material, the generating material decomposes water molecules to generate a large number of hydrated negative ions. The hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality.

[0116] The control method of the air treatment equipment saves the user from the operation of manually adding water and does not increase the ambient humidity, so it has better practicality.

[0117] In some examples, during the moisture absorption process, the operating speed of the fan 200 is a first set speed; during the generation of hydrated negative ions, the operating speed of the fan 200 is a second set speed, and the second set speed is not greater than the first set speed. During the generation of hydrated negative ions, reducing the operating speed of the fan 200 is conducive to more complete contact between the moisture released by the hygroscopic material and the generated material, and prolonging the contact time between the moisture released by the hygroscopic material and the generated material, so as to increase the generation of hydrated negative ions.

[0118] In some embodiments, Figure 5 and Figure 6 As shown, the first set speed is A, and the second set speed is 0.05*A to 0.25*A. In the process of generating hydrated negative ions in this scheme, more hydrated negative ions can be generated, and the effect of improving the ambient air quality is better.

[0119] In some examples, the control method further includes: during the moisture absorption process, based on the running time of the fan 200 reaching the first set time, turning off the fan 200 or executing the process of generating hydrated negative ions. By reasonably setting the first set time, it is ensured that the moisture adsorbed by the hygroscopic material reaches saturation or substantially saturation during the moisture absorption process, and then turning off the fan 200 to save energy (or executing the process of generating hydrated negative ions to improve the ambient air quality).

[0120] In other examples, such as Figure 5 and Figure 6 As shown, the control method further includes: during the moisture absorption process, obtaining the air humidity upstream and downstream of the moisture absorbing material, and based on the difference in air humidity upstream and downstream of the moisture absorbing material reaching a first set value, turning off the fan 200 or executing a process of generating hydrated negative ions. It can be that the first set value is set to no more than 3%, at which time the moisture absorbed by the moisture absorbing material is saturated or substantially saturated, so the fan 200 is turned off to save energy (or the process of generating hydrated negative ions is executed to improve the ambient air quality).

[0121] The first setting value may be set to 3%; or the first setting value may be set to 2%; or the first setting value may be set to 1%, etc.; all of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should all fall within the protection scope of this application.

[0122] In some examples, the heating unit includes a first heating element 110, and a temperature detection unit 400 is provided downstream of the first heating element 110. The control method further includes: in the process of generating hydrated negative ions, the temperature at the downstream of the first heating element 110 is obtained, and the first heating element 110 is controlled according to the temperature so that the temperature at the downstream of the first heating element 110 is maintained at the set temperature for a second set time, and then the first heating element 110 is turned off or a moisture absorption process is performed. In the process of generating hydrated negative ions, the first heating element 110 is controlled according to the temperature detected by the temperature detection unit 400 so that the temperature at the downstream of the first heating element 110 is maintained at the set temperature for a second set time, so that the hygroscopic material releases all or substantially all of the adsorbed moisture, and the released moisture is decomposed to generate hydrated negative ions under the action of the generating material, and then the first heating element 110 is turned off to save energy consumption, if the ambient air quality is no longer improved, the fan 200 is turned off to save energy consumption, and if the ambient air quality is still improved, the moisture absorption process and the hydrated negative ion generation process are performed in sequence. The set temperature is 75°C to 150°C, which can increase the amount of hydrated negative ions generated. The second set time can be determined based on experiments.

[0123] The set temperature may be set to 75°C; or the set temperature may be set to 115°C; or the set temperature may be set to 150°C, etc.; all of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present invention, and will not be repeated here, and should all fall within the scope of protection of this application.

[0124] Furthermore, the heating unit further includes a second heating element 120, and the control method further includes: in the process of generating hydrated negative ions, controlling the second heating element 120 to heat at a set heating temperature, and turning off the second heating element 120 when turning off the first heating element 110. The second heating element 120 is controlled to heat at a set heating temperature, and the amount of hydrated negative ions generated can be increased by reasonably setting the set heating temperature. The set heating temperature is 60°C to 120°C.

[0125] The heating temperature may be set to 60°C, or the heating temperature may be set to 90°C, or the heating temperature may be set to 120°C, etc. All of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present invention, and will not be repeated here, and all should fall within the protection scope of this application.

[0126] In other examples, such as Figure 5As shown, the heating unit includes a first heating element 110, and a temperature detection unit 400 is provided downstream of the first heating element 110. The control method also includes: in the process of generating hydrated negative ions, obtaining the temperature downstream of the first heating element 110, and controlling the first heating element 110 according to the temperature, so that the temperature downstream of the first heating element 110 is maintained at the corresponding set temperature in stages, and then turning off the first heating element 110 or performing a moisture absorption process.

[0127] During the process of generating hydrated negative ions, the first heating element 110 is controlled according to the temperature detected by the temperature detection unit 400, so that the temperature downstream of the first heating element 110 is maintained at the corresponding set temperature step by step, and the hydrated negative ions are regenerated step by step (i.e., in stages). After the hygroscopic material releases all or substantially all of the adsorbed moisture, the first heating element 110 is turned off to save energy. If the ambient air quality is no longer to be improved, the fan 200 is turned off to save energy. If the ambient air quality is still to be improved, the hygroscopic process and the process of generating hydrated negative ions are performed in sequence.

[0128] Furthermore, in any two adjacent stages, the set temperature of the downstream of the first heating element 110 in the latter stage is ≥ the set temperature of the downstream of the first heating element 110 in the former stage. That is, in the process of generating hydrated negative ions, the temperature of the hygroscopic material increases step by step, which can prolong the release time of hydrated negative ions.

[0129] In one embodiment, the temperature at the downstream of the first heating element 110 is maintained at the corresponding set temperature in five stages; the first stage: the set temperature at the downstream of the first heating element 110 is 30°C to 40°C, and the duration is 2min to 20min; the second stage: the set temperature at the downstream of the first heating element 110 is 40°C to 50°C, and the duration is 2min to 20min; the third stage: the set temperature at the downstream of the first heating element 110 is 50°C to 60°C, and the duration is 2min to 20min; the fourth stage: the set temperature at the downstream of the first heating element 110 is 60°C to 75°C, and the duration is 2min to 20min; the fifth stage: the set temperature at the downstream of the first heating element 110 is 75°C to 150°C, and the duration is 2min to 20min. This scheme regenerates the hydrated negative ions in stages during the generation of hydrated negative ions, and the release time of the hydrated negative ions is longer.

[0130] Furthermore, if Figure 6As shown, the heating unit further includes a second heating element 120, and the control method further includes: controlling the second heating element 120 to heat at a set heating temperature, and turning off the second heating element 120 when turning off the first heating element 110. The second heating element 120 is controlled to heat at a set heating temperature, and the amount of hydrated negative ions generated can be increased by reasonably setting the set heating temperature. The set heating temperature is 60°C to 120°C.

[0131] The heating temperature may be set to 60°C, or the heating temperature may be set to 90°C, or the heating temperature may be set to 120°C, etc. All of the above can achieve the purpose of this application, and their purpose does not deviate from the design concept of the present invention, and will not be repeated here, and all should fall within the protection scope of this application.

[0132] In one embodiment, if Figure 5 As shown, a control method for air handling equipment includes:

[0133] Hygroscopic process:

[0134] The fan 200 runs at a rotation speed A and the first heating element 110 is turned off;

[0135] Acquire the air humidity B1 upstream and the air humidity B2 downstream of the first heating element 110;

[0136] Based on the fact that B1-B2 is not greater than 3%, the process of generating hydrated negative ions is performed;

[0137] The process of generating hydrated negative ions:

[0138] The fan 200 runs at a speed of 0.25*A and the first heating element 110 runs;

[0139] The temperature at the downstream of the first heating element 110 is obtained, and the first heating element 110 is controlled according to the temperature, so as to sequentially maintain the temperature downstream of the first heating element 110 at 30°C to 40°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 40°C to 50°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 50°C to 60°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 60°C to 75°C for 2 to 20 minutes, and maintain the temperature downstream of the first heating element 110 at 75°C to 150°C for 2 to 20 minutes, and then perform the moisture absorption process.

[0140] In another embodiment, if Figure 6 As shown, a control method for air handling equipment includes:

[0141] Hygroscopic process:

[0142] The fan 200 runs at a rotation speed A, and the first heating element 110 and the second heating element 120 are turned off;

[0143] Acquire the air humidity B1 upstream and the air humidity B2 downstream of the first heating element 110;

[0144] Based on the fact that B1-B2 is not greater than 3%, the process of generating hydrated negative ions is performed;

[0145] The process of generating hydrated negative ions:

[0146] The fan 200 runs at a speed of 0.25*A, the first heating element 110 runs, and the second heating element 120 runs and heats to 90° C.;

[0147] The temperature at the downstream of the first heating element 110 is obtained, and the first heating element 110 is controlled according to the temperature, so as to sequentially maintain the temperature downstream of the first heating element 110 at 30°C to 40°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 40°C to 50°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 50°C to 60°C for 2 to 20 minutes, maintain the temperature downstream of the first heating element 110 at 60°C to 75°C for 2 to 20 minutes, and maintain the temperature downstream of the first heating element 110 at 75°C to 150°C for 2 to 20 minutes, and then perform the moisture absorption process.

[0148] To summarize, the air treatment equipment provided by the present application comprises the following steps: the fan is running, the heating unit is turned off, and the ambient air forms a wind beam blowing from the upstream of the heating unit to the downstream of the heating unit under the action of the fan, and the hygroscopic material adsorbs and stores the moisture in the wind beam; the process of generating hydrated negative ions comprises: the fan is running, and the ambient air forms a wind beam blowing from the upstream of the heating unit to the downstream of the heating unit under the action of the fan, and the heating unit is running, and the heating unit releases the moisture adsorbed by the hygroscopic material in a concentrated manner, and the large amount of released moisture passes through the generating material, and the generating material decomposes water molecules to generate a large amount of hydrated negative ions, and the hydrated negative ions are blown into the environment with the wind beam, thereby improving the ambient air quality; the air treatment equipment eliminates the need for users to manually add water, and will not increase the ambient humidity, and its practicality is better.

[0149] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" 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, and do not indicate or imply that the referred structure has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0150] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal connection 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.

[0151] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

Claims

1. An air treatment device, characterized in that: include: a hygroscopic material configured to absorb moisture; a heating unit, wherein the hygroscopic material is disposed on the heating unit, and the heating unit is configured to release the moisture absorbed by the hygroscopic material; A generating material is disposed in the heating unit and is configured to split water molecules to generate hydrated negative ions; and The fan is configured to form a wind beam flowing from the upstream of the heating unit to the downstream of the heating unit.

2. The air treatment equipment according to claim 1, characterized in that: The heating unit comprises: A first heating element is provided with a first functional layer, and the first functional layer includes the hygroscopic material and the generating material.

3. The air treatment equipment according to claim 2, characterized in that: The first functional layer includes a mixed layer, which is disposed on at least one of the upstream side and the downstream side of the first heating element, and components of at least one layer of the mixed layer include the hygroscopic material and the generating material.

4. The air treatment equipment according to claim 3, characterized in that: The components of the at least one mixed layer also include a binder. In the at least one mixed layer, the weight of the hygroscopic material is 3% to 90%, the weight of the generated material is 9.5% to 77%, and the weight of the binder is 0.5% to 20%.

5. The air treatment equipment according to claim 2, characterized in that: The first functional layer comprises: a hygroscopic layer disposed on the upstream side of the first heating element and comprising the hygroscopic material; and The generating layer is disposed on the downstream side of the first heating element and includes the generating material.

6. The air treatment device according to claim 5, characterized in that: Along the blowing direction of the wind beam, the size ratio of the moisture absorbing layer to the size of the generating layer is 1:9 to 9:

1.

7. The air treatment equipment according to claim 2, characterized in that: The first functional layer comprises: a hygroscopic layer, disposed on the first heating element and comprising the hygroscopic material; and The generating layer is arranged on the side of the moisture absorbing layer facing away from the first heating element and comprises the generating material.

8. The air treatment device according to claim 7, characterized in that: The weight ratio of the hygroscopic material to the generating material is (30-70):(27-67).

9. The air treatment device according to claim 1, characterized in that: The heating unit comprises: A first heating element, wherein the first heating element is provided with a first functional layer, the first functional layer is a hygroscopic layer, and the hygroscopic layer includes the hygroscopic material; and The second heating element is arranged downstream of the first heating element. The second heating element is provided with a second functional layer. The second functional layer is a generating layer. The generating layer includes the generating material.

10. The air treatment device according to claim 9, characterized in that: An adhesion strength improving layer for improving adhesion strength is provided between the second heating element and the second functional layer.

11. The air treatment device according to any one of claims 2 to 10, characterized in that: An adhesion strength improving layer for improving adhesion strength is provided between the first heating element and the first functional layer.

12. The air treatment device according to claim 11, characterized in that: The composition of the adhesion strength improving layer includes at least one of silica sol, alumina sol, pseudo-boehmite and bentonite.

13. The air treatment device according to claim 9 or 10, characterized in that: The second heating element includes at least one of a thermistor and a graphene heating film.

14. The air treatment device according to any one of claims 2 to 10, characterized in that: The first heating element comprises a thermistor with a honeycomb structure; A temperature detection unit is provided downstream of the first heating element.

15. The air treatment device according to any one of claims 1 to 10, characterized in that: The hygroscopic material comprises at least one of molecular sieve, activated alumina, silica gel and metal organic framework; The components of the generated material include at least one of tourmaline and negative ion powder; The fan is located upstream or downstream of the heating unit.

16. The air treatment device according to any one of claims 1 to 10, characterized in that: Also includes: a humidity detection unit configured to detect the humidity of the air upstream of the hygroscopic material and the humidity of the air downstream of the hygroscopic material; and The humidity detection unit, the fan and the heating unit are all electrically connected to the control unit.

17. A control method for an air treatment device according to any one of claims 1 to 16, characterized in that: include: Dehumidification process: running the fan and turning off the heating unit; The process of generating hydrated negative ions: operating the fan and the heating unit.

18. The control method according to claim 17, characterized in that: During the moisture absorption process, the operating speed of the fan is a first set speed; During the process of generating hydrated negative ions, the operating speed of the fan is a second set speed, and the second set speed is not greater than the first set speed.

19. The control method according to claim 18, characterized in that: The first set speed is A, and the second set speed is 0.05*A to 0.25*A.

20. The control method according to any one of claims 17 to 19, characterized in that: The control method further includes: during the moisture absorption process, based on the running time of the fan reaching a first set time, turning off the fan or executing the process of generating hydrated negative ions; or The control method further includes: during the desiccant process, obtaining the air humidity upstream and downstream of the desiccant material, and based on the air humidity difference between the upstream and downstream of the desiccant material reaching a first set value, turning off the fan or executing the process of generating hydrated negative ions.

21. The control method according to any one of claims 17 to 19, characterized in that: The heating unit includes a first heating element, and a temperature detection unit is provided downstream of the first heating element. The control method also includes: in the process of generating hydrated negative ions, obtaining the temperature downstream of the first heating element, and controlling the first heating element according to the temperature, so that the temperature downstream of the first heating element is maintained at a set temperature for a second set time, and then turning off the first heating element or performing the moisture absorption process.

22. The control method according to claim 21, characterized in that: The heating unit further includes a second heating element, and the control method further includes: during the process of generating hydrated negative ions, controlling the second heating element to heat at a set heating temperature, and turning off the second heating element when turning off the first heating element.

23. The control method according to claim 22, characterized in that: The set temperature is 75°C to 150°C, and the set heating temperature is 60°C to 120°C.

24. The control method according to any one of claims 17 to 19, characterized in that: The heating unit includes a first heating element, and a temperature detection unit is provided downstream of the first heating element. The control method also includes: in the process of generating hydrated negative ions, obtaining the temperature downstream of the first heating element, and controlling the first heating element according to the temperature so that the temperature downstream of the first heating element is maintained at the corresponding set temperature in stages, and then turning off the first heating element or performing the moisture absorption process.

25. The control method according to claim 24, characterized in that: For any two adjacent stages, the set temperature at the downstream of the first heating element in the latter stage is ≥ the set temperature at the downstream of the first heating element in the former stage.

26. The control method according to claim 25, characterized in that: The temperature downstream of the first heating element is maintained at corresponding set temperatures in five stages; The first stage: the set temperature at the downstream of the first heating element is 30°C to 40°C, and the duration is 2min to 20min; The second stage: the set temperature at the downstream of the first heating element is 40°C to 50°C, and the duration is 2min to 20min; The third stage: the set temperature at the downstream of the first heating element is 50°C to 60°C, and the duration is 2min to 20min; Stage 4: the set temperature at the downstream of the first heating element is 60° C. to 75° C., and the duration is 2 min to 20 min; The fifth stage: the set temperature at the downstream of the first heating element is 75° C. to 150° C., and the duration is 2 min to 20 min.

27. The control method according to claim 24, characterized in that: The heating unit further includes a second heating element, and the control method further includes: controlling the second heating element to heat at a set heating temperature, and turning off the second heating element when turning off the first heating element.

28. The control method according to claim 27, characterized in that: The set heating temperature is 60°C to 120°C.

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