Rotating wheel humidifying device, air conditioner and control method of air conditioner

Abstract

The invention discloses a rotating wheel humidifying device, an air conditioner and a control method of the rotating wheel humidifying device. The rotating wheel humidifying device comprises a moisture absorption rotating wheel with the positive temperature coefficient characteristic, and a moisture absorption medium layer used for absorbing moisture is arranged on the surface of the moisture absorption rotating wheel; and the power supply module is electrically connected with the moisture absorption rotating wheel and is used for electrifying the moisture absorption rotating wheel to heat the moisture absorption rotating wheel so as to evaporate the moisture adsorbed by the moisture absorption medium layer to dryness. According to the rotating wheel humidifying device, the humidifying rotating wheel can be independently dehumidified, and self-drying of the moisture absorption rotating wheel is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly relates to a rotary wheel humidifying device, an air conditioner and a control method thereof. Background Art

[0002] In recent years, waterless humidifying air conditioners have gradually emerged. Generally, such air conditioners are configured with a rotary wheel humidifying device on the outdoor side, which absorbs moisture in the outdoor air and transports it to the indoor side through an air delivery pipe, thereby realizing the adjustment of indoor humidity. However, when the hygroscopic rotary wheel is in a non-use state, if it fails to be properly stored or maintained, especially when it is in a high-humidity environment for a long time and no moisture is released, its hygroscopic performance will significantly decline, resulting in the humidifying capacity of the air conditioner not meeting the design requirements, and thus it is difficult to meet the user's humidifying needs. Currently, the air conditioner uses the waste heat generated during the refrigeration / dehumidification operation of the condenser to heat the rotary wheel for dehumidification, so as to avoid the hygroscopic device being in a humid environment with a high humidity. However, this method cannot dehumidify the rotary wheel alone and requires the air conditioner to enter a specific working condition to dehumidify, with great limitations. Summary of the Invention

[0003] Embodiments of the present invention provide a rotary wheel humidifying device, an air conditioner and a control method thereof, which solve the problem that the traditional dehumidification method cannot dehumidify the humidifying rotary wheel alone.

[0004] In a first aspect, an embodiment of the present invention provides a rotary wheel humidifying device, which includes:

[0005] A hygroscopic rotary wheel with a positive temperature coefficient characteristic, and a hygroscopic medium layer for adsorbing moisture is provided on the surface of the hygroscopic rotary wheel;

[0006] A power supply module, electrically connected to the hygroscopic rotary wheel, for energizing the hygroscopic rotary wheel to generate heat to evaporate the moisture adsorbed by the hygroscopic medium layer.

[0007] In the rotary wheel humidifying device provided by the embodiment of the present invention, the rotary wheel humidifying device further includes a metal rotating shaft for rotation, the metal rotating shaft is connected to the axis of the hygroscopic rotary wheel, and the power supply module is electrically connected to the metal rotating shaft.

[0008] In the rotary wheel humidifying device provided by the embodiment of the present invention, a plurality of air channels regularly arranged in the radial and circumferential directions are provided inside the hygroscopic rotary wheel, and the hygroscopic medium layer is provided on the inner wall of the air channels.

[0009] In the rotary wheel humidifying device provided by the embodiment of the present invention, the air channels are isosceles triangles.

[0010] In the rotary wheel humidifying device provided by the embodiment of the present invention, the hygroscopic medium layer is a MOFs material.

[0011] In the rotary wheel humidifying device provided by the embodiment of the present invention, the specific surface area of the MOFs material is 3000-5000 m 2 / g.

[0012] In the rotary wheel humidifying device provided by the embodiment of the present invention, the pores of the MOFs material are 1 nm - 3 nm.

[0013] In the rotary wheel humidifying device provided by the embodiment of the present invention, the porosity of the MOFs material is 40% - 60%.

[0014] In a second aspect, the embodiment of the present invention provides an air conditioner, which includes an indoor unit, an outdoor unit, and the rotary wheel humidifying device described in the first aspect above. The indoor unit is connected to the outdoor unit, and the rotary wheel humidifying device is disposed in the outdoor unit and connected to the indoor unit.

[0015] In a third aspect, the embodiment of the present invention provides a control method for an air conditioner. The method is applied to the air conditioner described in the second aspect above, and the method includes: obtaining the humidity of the moisture absorption rotary wheel; if the humidity of the moisture absorption rotary wheel is greater than a first preset humidity, then energizing the moisture absorption rotary wheel; obtaining the temperature of the moisture absorption rotary wheel; if the temperature of the moisture absorption rotary wheel is greater than a first preset temperature, then de-energizing the moisture absorption rotary wheel and returning to the step of obtaining the humidity of the moisture absorption rotary wheel; if the temperature of the moisture absorption rotary wheel is not greater than the first preset temperature, then determining whether the humidity of the moisture absorption rotary wheel is less than a second preset humidity, where the second preset humidity is less than the first preset humidity. If the humidity of the moisture absorption rotary wheel is less than the second preset temperature, then de-energizing the moisture absorption rotary wheel.

[0016] The embodiment of the present invention provides a rotary wheel humidifying device, an air conditioner, and a control method thereof. The rotary wheel humidifying device includes: a moisture absorption rotary wheel with a positive temperature coefficient characteristic, and a moisture absorption medium layer for adsorbing moisture is provided on the surface of the moisture absorption rotary wheel; a power supply module, electrically connected to the moisture absorption rotary wheel, for energizing the moisture absorption rotary wheel to make the moisture absorption rotary wheel heat up to evaporate the moisture adsorbed by the moisture absorption medium layer. The rotary wheel humidifying device of the present application is provided with a moisture absorption rotary wheel with a positive temperature coefficient characteristic, and a moisture absorption medium layer is provided on the surface of the moisture absorption rotary wheel to achieve the effect of adsorbing moisture. The power supply module energizes the moisture absorption rotary wheel to make it heat up, and cooperates with the positive temperature coefficient characteristic of the moisture absorption rotary wheel to quickly evaporate the moisture adsorbed by the moisture absorption medium layer on the moisture absorption rotary wheel, so as to achieve the effect of self-drying of the moisture absorption rotary wheel. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the rotary wheel humidifying device provided by the embodiment of the present invention;

[0019] Figure 2 It is an axial view of the humidifying rotary wheel provided by the embodiment of the present invention;

[0020] Figure 3 It is a side view of the humidifying rotary wheel provided by the embodiment of the present invention;

[0021] Figure 4 It is a schematic structural diagram of the air conditioner provided by the embodiment of the present invention;

[0022] Figure 5 It is a flowchart of the method provided by the embodiment of the present invention.

[0023] The reference numerals in the drawings are as follows:

[0024] 10, rotary wheel humidifying device; 1, moisture absorption rotary wheel; 101, air duct; 2, power supply module; 3, metal rotating shaft; 4, motor; 20, indoor unit; 30, outdoor unit. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for explaining and understanding the present invention, rather than for limiting the present invention. In addition, in the drawings, structures that are similar or the same are denoted by the same reference numerals.

[0027] Referring to Figures 1 to 3 , the present invention provides a rotary wheel humidifying device 10. As Figure 1 shown, it shows an embodiment of the rotary wheel humidifying device 10 provided by the present invention. The following will make a detailed description of the structure and working principle of the rotary wheel humidifying device 10 with reference to the accompanying drawings of the specification. As Figure 1As shown in the figure, the rotary wheel humidifying device 10 includes: a moisture absorption rotary wheel 1 with positive temperature coefficient characteristics, and a moisture absorption medium layer (not shown in the figure) for adsorbing moisture is provided on the surface of the moisture absorption rotary wheel 1; a power supply module 2, electrically connected to the moisture absorption rotary wheel 1, for energizing the moisture absorption rotary wheel 1 to generate heat to evaporate the moisture adsorbed by the moisture absorption medium layer.

[0028] In specific implementation, the rotary wheel humidifying device 10 is mainly applied to the outdoor unit of an air conditioner to realize the function of adjusting the indoor air humidity. The rotary wheel humidifying device 10 includes a moisture absorption rotary wheel 1 and a power supply module 2. In addition, it may also include a motor 4, a supply air fan, a regeneration fan, a regeneration heat source, a supply air duct and other components. The moisture absorption rotary wheel 1 is a whole rotary wheel structure with a certain diameter and axial length. The moisture absorption rotary wheel 1 is the core component for realizing air humidification. The moisture absorption rotary wheel 1 is driven by a rotary wheel motor 4 to rotate, and cooperates with the supply air fan, the regeneration fan and the heat source to realize the indoor humidification or dehumidification function. The specific operation principle is as follows: the supply air fan drives the wet air into the dehumidification area of the moisture absorption rotary wheel 1. The dehumidification area of the moisture absorption rotary wheel 1 absorbs the moisture in the wet air, so that the wet air becomes dry after passing through the dehumidification area. The motor 4 drives the moisture absorption rotary wheel 1 to slowly rotate, and rotates the part of the rotary wheel that absorbs moisture to the regeneration area. The regeneration fan blows the hot air generated by heating the regeneration heat source into the regeneration area. The hot air evaporates and takes away the moisture in the part of the moisture absorption rotary wheel 1 entering the regeneration area, so that the air passing through the regeneration area becomes humid. The part of the moisture absorption rotary wheel 1 entering the regeneration area completes dehumidification, ensuring the normal moisture absorption function. Then the part that has completed dehumidification rotates to the dehumidification area again to absorb the moisture in the wet air, and continues to operate in a cycle. Through the cooperation of the air duct and the valve, the indoor humidity is adjusted.

[0029] The traditional rotary wheel humidifying device obtains heat from the condenser of the outdoor unit to cooperate with the regeneration fan to dehumidify the moisture absorption rotary wheel, or directly generates heat through a heating component to cooperate with the regeneration fan to dehumidify the moisture absorption rotary wheel. The former requires the air conditioner to be in specific working conditions such as refrigeration to dehumidify the moisture absorption rotary wheel of the device, while the latter cannot achieve rapid dehumidification, and the dehumidification effect is not ideal.

[0030] Therefore, in this embodiment, a scheme for heating and dehumidifying the moisture absorption rotary wheel 1 itself is designed. The moisture absorption rotary wheel 1 has positive temperature coefficient characteristics. Specifically, the moisture absorption rotary wheel 1 is prepared from PTC material. PTC (Positive Temperature Coefficient) material is a semiconductor material whose resistance value increases stepwise with the increase of temperature. The resistance value of PTC material increases significantly non-linearly with the increase of temperature. Therefore, the moisture absorption rotary wheel 1 prepared from PTC material has positive temperature coefficient characteristics. The preparation process of the moisture absorption rotary wheel 1 prepared from PTC material is as follows:

[0031] First, prepare the PTC material formula, which includes a base material, a conductive additive, an adhesive and other additives. The base material, the conductive additive and other additives are mixed in a certain proportion to obtain the PTC material powder. Then enter the pressing process, design the corresponding mold according to the design requirements of the hygroscopic wheel 1 (such as diameter, thickness, porosity, etc.), and put the mixed PTC material powder into the mold. Use a hydraulic press or a press to apply pressure to the mold to press the material into a wheel blank. Then enter the sintering process, put the pressed wheel blank into a sintering furnace for pre-sintering, so that the turntable blank forms a stable PTC characteristic. Finally, perform surface treatment, use deionized water and anhydrous ethanol to clean the PTC material, remove surface impurities and oil stains, and then perform surface activation treatment on the PTC material, such as plasma treatment or chemical treatment, coupling agent treatment, and use a coupling agent to treat the surface of the PTC material.

[0032] Since the PTC material itself does not absorb moisture, a hygroscopic medium layer is provided on the surface of the hygroscopic rotor 1. The hygroscopic medium layer is designed with a material having water absorption properties. At normal temperature and pressure, the hygroscopic medium layer can absorb moisture in the air, and the hygroscopic rotor 1 can absorb moisture through the hygroscopic medium layer. The power module 2 is electrically connected to the hygroscopic rotor 1. The power module 2 is specifically a circuit module for providing a constant current, which is integrated on the main board of the outdoor unit. The power module 2 can output a current of a specific magnitude to the hygroscopic rotor 1, and energize the hygroscopic rotor 1 as a whole. Since the hygroscopic wheel 1 is made of PTC material, the hygroscopic wheel 1 will heat up as a whole after power is turned on. The heat generated can evaporate the moisture attached to the hygroscopic medium. Combined with the characteristics of the PTC material of the hygroscopic wheel 1 itself, as the temperature rises, the resistance increases, the thermal effect of the current is enhanced, and continuous power-on allows the temperature to rise rapidly. The higher the temperature, the faster the evaporation rate of the moisture attached to the hygroscopic medium layer. In this way, the moisture adsorbed on the hygroscopic medium can be evaporated in a shorter time, achieving the effect of rapid dehumidification of the hygroscopic wheel 1. At the same time, when the temperature of the hygroscopic wheel 1 reaches a certain value, the resistance increases sharply, which also causes the current passing through it to decrease, thereby automatically limiting the temperature rise and having a self-temperature control characteristic. This self-regulating characteristic enables the hygroscopic wheel 1 to maintain the temperature within a safe range even without the control of an external control system.

[0033] In actual applications, the rotary humidifying device 10 can be controlled and operated by the control system of the air conditioner. Specifically, after completing the humidification / dehumidification function, the hygroscopic medium layer on the surface of the hygroscopic wheel 1 is attached with a certain amount of moisture. If the air conditioner does not need to run the humidification / dehumidification function for a long time, the control system of the air conditioner controls the power module 2 to power on the humidifying wheel, so that the moisture attached to the hygroscopic medium layer is quickly evaporated, thereby achieving rapid dehumidification of the hygroscopic wheel 1, keeping the surface of the hygroscopic wheel 1 dry, ensuring that the humidification / dehumidification function can be normal, and improving the service life of the device.

[0034] In one embodiment, referring to Figure 1 , the rotary wheel humidifying device 10 further includes a metal rotating shaft 3 for rotation. The metal rotating shaft 3 is connected to the axis of the moisture absorption rotary wheel 1, and the power supply module 2 is electrically connected to the metal rotating shaft 3. In a specific implementation, the rotary wheel humidifying device 10 further includes a metal rotating shaft 3 for rotation. The metal rotating shaft 3 serves as the shaft structure of the humidifying rotary wheel. The moisture absorption rotary wheel 1 rotates through the metal rotating shaft 3. The metal rotating shaft 3 is designed with a metal material, usually made of materials such as iron or stainless steel. The metal rotating shaft 3 is connected to the axis of the moisture absorption rotary wheel 1. Specifically, a shaft hole adapted to the metal rotating shaft 3 is provided at the center position of the moisture absorption rotary wheel 1. The metal rotating shaft 3 is connected to the moisture absorption rotary wheel 1 by passing through the shaft hole at the center of the moisture absorption rotary wheel 1. After the metal rotating shaft 3 is connected to the moisture absorption rotary wheel 1, the moisture absorption rotary wheel 1 is made of PTC material. Both the metal rotating shaft 3 and the moisture absorption rotary wheel 1 are conductors and are electrically connected. The power supply module 2 is electrically connected to the metal rotating shaft 3. Specifically, the power supply module 2 is connected to the metal rotating shaft 3 through positive and negative electrodes. The electrodes and the metal rotating shaft 3 can rotate relative to each other, so as to ensure that the rotation of the moisture absorption rotary wheel 1 and the metal rotating shaft 3 does not affect the power-on effect. In practical applications, the power supply module 2 supplies power to the metal rotating shaft 3 under the control of the air conditioner control system, so that current passes through the metal rotating shaft 3 and enters the humidifying rotary wheel. The humidifying rotary wheel is energized from the axis. Under the action of the current, the moisture absorption rotary wheel 1 made of PTC material generates heat, evaporates the moisture attached to the moisture absorption medium layer, and realizes the rapid dehumidification of the moisture absorption rotary wheel 1.

[0035] Further, referring to Figure 2 , a plurality of air channels 101 are regularly arranged in the radial and circumferential directions on the inner side of the moisture absorption rotary wheel 1, and the moisture absorption medium layer is provided on the inner wall of the air channels 101. In a specific implementation, a plurality of air channels 101 are provided on the inner side of the moisture absorption rotary wheel 1. The air channels 101 are used for air circulation. These air channels 101 are regularly arranged in the radial and circumferential directions of the moisture absorption rotary wheel 1. Specifically, the air channels 101 arranged in the radial direction of the moisture absorption rotary wheel 1 gradually decrease in area from the radial outer side of the moisture absorption rotary wheel 1 to the center of the moisture absorption rotary wheel 1, and the air channels 101 arranged in the circumferential direction of the moisture absorption rotary wheel 1 have the same area. The moisture absorption medium layer is provided on the inner wall of the air channels 101. In practical applications, air can be transmitted on both sides of the moisture absorption rotary wheel 1 through the air channels 101. The wet air enters through the air channels 101. After entering the air channels 101, the moisture in the wet air is adsorbed by the moisture absorption medium layer on the inner wall of the air channels 101, and the dry air comes out from the other end of the air channels 101. Through the joint cooperation of a plurality of regularly arranged air channels 101, the drying of the air is efficiently completed.

[0036] Further, referring to Figure 2, the air duct 101 is an isosceles triangle. In a specific implementation, the air duct 101 is designed as an isosceles triangle air duct 101 structure. The two base angle vertices of the isosceles triangle air duct 101 are symmetrical about the diameter line of the moisture absorption rotor 1. In practical applications, the isosceles triangle air duct 101 can improve the structural stability, making the moisture absorption rotor 1 not easily deformed and having a longer service life.

[0037] In one implementation, the moisture absorption medium layer is made of MOFs material. In a specific implementation, the moisture absorption medium layer is designed using MOFs material. MOFs (Metal-Organic Frameworks) material is a highly ordered, porous crystal material formed by connecting metal ions or metal clusters with organic ligands through coordination bonds. The moisture absorption medium layer designed with MOFs material has characteristics such as a high specific surface area, good thermal stability, high adsorption capacity, and high mechanical strength. The preparation process of MOFs material is as follows: First, prepare the MOFs material formula: metal salt (such as aluminum oxide Al2O3), organic ligand (such as terephthalic acid H2BDC), and solvent (water or ethanol). And reasonably set the formula ratio (molar ratio). Second, enter the preparation steps: ① Dissolve the metal salt in water and stir until uniform; ② Add the organic ligand to the solution and stir evenly; ③ Use NaOH to adjust the pH value of the solution to alkaline; ④ Heat the solution under reflux to promote the formation of MOFs; ⑤ Separate the MOFs powder by filtration and dry it in a vacuum drying oven to remove moisture. Finally, by reasonably designing and optimizing the specific surface area, pores, and porosity parameters of the MOFs material, its water desorption temperature can be effectively controlled within the working temperature range of the moisture absorption rotor 1 (PTC material).

[0038] The process of making the moisture-absorbing medium layer on the surface of the moisture-absorbing rotor 1 with MOFs materials is as follows: First, prepare a composite slurry of MOFs materials and adhesives. Select adhesives. According to the characteristics and application environment of PTC materials, suitable adhesives such as epoxy resin, silica gel, polyurethane, etc. are selected. The adhesive must have good bonding properties and at the same time not affect the electrical and thermal properties of PTC materials. Second, prepare the slurry. Mix the MOFs powder with the adhesive, add an appropriate amount of solvent (such as ethanol or water) and dispersant to form a uniform composite slurry. Ensure that the MOFs are evenly dispersed in the slurry to avoid agglomeration. Then, coat the MOFs composite slurry onto the moisture-absorbing rotor 1 made of PTC materials. The coating method is to evenly coat the composite slurry on the surface of the moisture-absorbing rotor 1 made of PTC materials, and methods such as spin coating, dip coating, spraying, etc. can be used to ensure uniform coating and avoid voids or accumulations. Then, place the moisture-absorbing rotor 1 coated with MOFs materials as a whole at room temperature or low temperature for drying to remove the solvent, so that the MOFs and the adhesive firmly adhere to the surface of the moisture-absorbing rotor 1 made of PTC materials. Finally, heat treatment or chemical curing is carried out on the moisture-absorbing rotor 1 made of PTC materials after drying as needed to enhance the bonding force between the MOFs materials and the PTC materials.

[0039] In practical applications, for the moisture-absorbing medium layer designed with MOFs materials, the high specific surface area characteristic of MOFs materials can enable the moisture-absorbing medium layer to efficiently adsorb moisture in humid air; during the dehumidification process of the moisture-absorbing rotor 1, the moisture-absorbing rotor 1 with a positive temperature coefficient characteristic generates heat, and the good thermal stability of MOFs materials makes the moisture-absorbing medium layer not easily deformed, improving the stability of the moisture-absorbing medium layer.

[0040] Further, the specific surface area of the MOFs material is 3000 - 5000 m 2 / g. In specific implementation, when preparing the MOFs material, the specific surface area of the MOFs material is set at 3000 - 5000 m 2 / g, that is, the maximum specific surface area of the MOFs material can be set at 5000 m 2 / g, and the minimum can be set at 3000 m 2 / g. For example, the specific surface area of the MOFs material can be set at 4000 m 2 / g. The specific surface area of the MOFs material refers to the sum of the surface areas of the MOFs material per unit mass, and the specific surface area of the MOFs material consists of the external surface and internal pores. In practical applications, by designing the specific surface area of the MOFs material to be 3000 - 5000 m 2 / g, the moisture absorption performance of the moisture-absorbing medium layer can be maintained at a relatively high level, and it can efficiently absorb moisture in humid air.

[0041] Furthermore, the pores of the MOFs material are 1 nm - 3 nm. In specific implementation, the pore shape of the MOFs material for preparing the moisture absorption medium layer is a regular shape, the pore distribution is uniform, the pores have high connectivity, and the surface property of the MOFs material is an appropriate amount of hydrophilic functional groups. The pores of the MOFs material for preparing the moisture absorption medium layer are set at 1 nm - 3 nm. The pores of MOFs refer to the voids in the MOFs material, which are formed by metal ions and organic ligands through a self-assembly process and have a periodic network structure. In practical applications, by setting the pores of the MOFs material for preparing the moisture absorption medium layer at 1 nm - 3 nm, the moisture absorption medium layer provided on the surface of the moisture absorption rotor 1 can reach a relatively high moisture absorption level.

[0042] Furthermore, the porosity of the MOFs material is 40% - 60%. In specific implementation, the porosity of the MOFs material refers to the percentage of the pore volume in the MOFs material to the total volume of the material in its natural state. The porosity of the MOFs material for preparing the moisture absorption medium layer is set at 40% - 60%, that is, the maximum porosity of the MOFs material can be set at 60%, and the minimum can be set at 40%. For example, the porosity of the MOFs material can be set at 50%. In practical applications, by setting the porosity of the MOFs material for preparing the moisture absorption medium layer at 40% - 60%, the moisture absorption efficiency of the moisture absorption medium layer can be further improved.

[0043] In one embodiment, the rotor humidifying device 10 further includes a temperature sensor and a humidity sensor, and both the temperature sensor and the humidity sensor are arranged adjacent to the moisture absorption rotor 1. In specific implementation, the temperature sensor and the humidity sensor are arranged adjacent to the moisture absorption rotor 1. The temperature sensor can be used to detect the temperature on the surface of the moisture absorption rotor 1, and the humidity sensor can be used to detect the humidity on the surface of the moisture absorption rotor 1. The temperature sensor can adopt an infrared sensing structure, and it is simpler to measure the temperature. In practical applications, the temperature sensor and the humidity sensor are electrically connected to the control system of the air conditioner, so that the control system of the air conditioner can formulate a heating strategy for controlling the moisture absorption rotor 1 according to the data transmitted back by the temperature sensor and the humidity sensor, realizing intelligent heating control of the moisture absorption rotor 1.

[0044] In summary, the rotor humidifying device of the present application is provided with a moisture absorption rotor having a positive temperature coefficient characteristic. A moisture absorption medium layer is provided on the surface of the moisture absorption rotor to achieve the effect of adsorbing moisture. The moisture absorption rotor is energized by the power supply module to generate heat, and with the positive temperature coefficient characteristic of the moisture absorption rotor, the moisture adsorbed by the moisture absorption medium layer on the moisture absorption rotor is quickly evaporated and dried, thereby achieving the effect of self-drying of the moisture absorption rotor.

[0045] Such as Figure 4As shown in the figure, an embodiment of the present invention provides an air conditioner, which includes an indoor unit 20, an outdoor unit 30, and the rotary wheel humidifying device 10 described in the above embodiment. The indoor unit 20 is connected to the outdoor unit 30, and the rotary wheel humidifying device 10 is arranged in the outdoor unit 30 and connected to the indoor unit 20.

[0046] In specific implementation, the air conditioner is composed of an indoor unit 20, an outdoor unit 30, and a rotary wheel humidifying device 10. The indoor unit 20 and the outdoor unit 30 are connected through a condensation pipeline and a air supply pipeline. The indoor unit 20 and the outdoor unit 30 of the air conditioner cooperate to achieve refrigeration or heating. The indoor unit 20 is responsible for blowing cold air indoors, and the outdoor unit 30 transfers heat outdoors through compression and gasification heat release by the compressor. The rotary wheel humidifying device 10 is installed in the outdoor unit 30, mainly for humidifying or dehumidifying indoor air. The rotary wheel humidifying device 10 is connected to the indoor unit 20 through the air supply pipeline to communicate with the indoor environment. The rotary wheel humidifying device 10 completes the exchange of indoor air and outdoor air through the cooperation of the internal humidifying rotary wheel and other components to achieve humidification or dehumidification of indoor air. After the air conditioner finishes running the humidification or dehumidification function, the power supply module 2 of the rotary wheel humidifying device 10 can be controlled by the air conditioner control system to energize the moisture absorption rotary wheel 1 to complete the dehumidification of the moisture absorption rotary wheel 1, ensure the normal function of the moisture absorption rotary wheel 1, and extend the service life. Since the specific structure and working principle of the rotary wheel humidifying device 10 have been introduced in detail in the previous specification, for the sake of simplicity of the specification, it will not be repeated here.

[0047] In the air conditioner of this embodiment, due to the adoption of the rotary wheel humidifying device provided by the embodiment of the present invention, after the humidification or dehumidification function is completed, rapid drying of the moisture absorption rotary wheel can be achieved, and the service life is longer.

[0048] As Figure 5 shown, an embodiment of the present invention provides a control method for an air conditioner. This method is applied to the air conditioner described in the above embodiment. As Figure 5 shown, the method includes steps: S110 - S160.

[0049] S110. Obtain the humidity of the moisture absorption rotary wheel.

[0050] In specific implementation, the rotary wheel humidifying device is connected to the control system of the air conditioner. The dehumidification function of the moisture absorption rotary disk in the device is controlled by the air conditioner control system. The system obtains the humidity of the moisture absorption rotary wheel through the humidity sensor inside the rotary wheel humidifying device. Before entering the dehumidification mode, it is necessary to confirm whether the refrigeration or heating function of the air conditioner is turned off. After confirmation, the system controls whether the power supply module of the rotary wheel humidifying device needs to energize the moisture absorption rotary disk to execute the dehumidification function according to the humidity data transmitted back by the humidity sensor.

[0051] S120. If the humidity of the moisture absorption rotor is greater than the first preset humidity, then power is supplied to the moisture absorption rotor.

[0052] In specific implementation, after the control system obtains the humidity of the moisture absorption rotor, it compares the humidity of the moisture absorption rotor with the first preset humidity, and uses the first preset humidity as the condition for determining whether the humidity of the moisture absorption rotor reaches the condition that needs dehumidification. If the humidity of the moisture absorption rotor is not greater than the first preset humidity, the moisture absorption rotor remains in a dry state and does not need to be dehumidified. If the humidity of the moisture absorption rotor is greater than the first preset humidity, it indicates that the moisture absorption rotor remains in a wet state, and long-term wetness is likely to damage the function of the moisture absorption rotor. In this case, the system controls the power supply module to supply power to the moisture absorption rotor. After the moisture absorption rotor with a positive temperature coefficient characteristic is powered on, it generates heat, causing the moisture adsorbed by the moisture absorption medium layer to evaporate, thereby realizing the dehumidification of the moisture absorption rotor.

[0053] S130. Obtain the temperature of the moisture absorption rotor.

[0054] In specific implementation, when the system determines that the humidity of the moisture absorption rotor is greater than the first preset humidity, it controls the power supply module to supply power to the moisture absorption rotor. The moisture absorption rotor generates heat and enters the dehumidification mode. Then, the system obtains the temperature of the moisture absorption rotor through a temperature sensor arranged adjacent to the moisture absorption rotor, monitors the temperature of the moisture absorption rotor, and obtains the temperature condition of the moisture absorption rotor after being powered on.

[0055] S140. If the temperature of the moisture absorption rotor is greater than the first preset temperature, then cut off the power supply to the moisture absorption rotor and return to the step of obtaining the humidity of the moisture absorption rotor.

[0056] In specific implementation, after the system obtains the temperature of the moisture absorption rotor through the temperature sensor, it compares the temperature of the moisture absorption rotor with the first preset temperature, and uses the first preset temperature as the condition for whether the temperature of the moisture absorption rotor reaches the safety upper limit. When the system determines that the temperature of the moisture absorption rotor is greater than the first preset temperature, it indicates that the temperature of the moisture absorption rotor exceeds the safety upper limit and is likely to be damaged. At this time, the system controls the power supply module to cut off the power supply to the moisture absorption rotor to prevent the temperature of the moisture absorption rotor from continuing to rise and being damaged, and returns to step S110 to re-obtain the humidity of the moisture absorption turntable.

[0057] S150. If the temperature of the moisture absorption rotor is not greater than the first preset temperature, then determine whether the humidity of the moisture absorption rotor is less than the second preset humidity, where the second preset humidity is less than the first preset humidity.

[0058] In specific implementation, after the system obtains the temperature of the desiccant wheel through a temperature sensor, it compares the temperature of the desiccant wheel with a first preset temperature. Taking the first preset temperature as the condition for whether the temperature of the desiccant wheel reaches the safety upper limit, when the system determines that the temperature of the desiccant wheel is not greater than the first preset temperature, it indicates that the temperature of the desiccant wheel has not exceeded the safety upper limit, and the dehumidification of the desiccant wheel proceeds normally. At this time, the system compares the humidity of the desiccant wheel obtained through a humidity sensor with a second preset humidity. Taking the second preset humidity as the condition for whether the desiccant wheel reaches the expected dry state, the second preset humidity is less than the first preset humidity. The system judges whether the humidity of the desiccant wheel is less than the second preset humidity, so as to judge whether the desiccant wheel reaches the expected drying effect.

[0059] S160. If the humidity of the desiccant wheel is less than the second preset temperature, cut off the power supply to the desiccant wheel.

[0060] In specific implementation, in order to ensure that the desiccant wheel is not easily damaged by moisture, the desiccant wheel needs to be dehumidified to a certain dry state. Taking the second preset humidity as the condition for whether the desiccant wheel reaches the expected drying effect, when the system detects that the humidity of the desiccant wheel is less than the second preset humidity, it indicates that the desiccant wheel has reached the expected drying effect after dehumidification and does not need to continue dehumidifying. At this time, the system controls the power supply module to cut off the power supply to the desiccant wheel, ending the dehumidification. The desiccant wheel remains dry as a whole, and the moisture content in the desiccant medium layer is very small or even none, thus ensuring the normal moisture absorption function of the desiccant wheel.

[0061] The method of the present invention uses two parameters, namely the temperature and humidity of the desiccant wheel, to complete the dehumidification control of the desiccant wheel, which can realize the intelligent drying control of the desiccant wheel, ensure the drying effect and safety of the desiccant wheel, and make the service life of the desiccant wheel longer.

[0062] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A rotary wheel humidifying device, characterized in that, Comprising: A moisture absorption rotor with a positive temperature coefficient characteristic, and a moisture absorption medium layer for adsorbing moisture is provided on the surface of the moisture absorption rotor; A power supply module, electrically connected to the moisture absorption rotor, for supplying power to the moisture absorption rotor to heat the moisture absorption rotor to evaporate the moisture adsorbed by the moisture absorption medium layer.

2. The runner humidifying device according to claim 1, wherein The rotor humidifying device further includes a metal rotating shaft for rotating, the metal rotating shaft is connected to the axis of the moisture absorption rotor, and the power supply module is electrically connected to the metal rotating shaft.

3. The runner humidifying device according to claim 1, wherein A plurality of air channels regularly arranged in the radial and circumferential directions are provided inside the moisture absorption rotor, and the moisture absorption medium layer is provided on the inner wall of the air channels.

4. The runner humidifying device according to claim 3, characterized in that The air channels are in an isosceles triangle shape.

5. The runner humidifying device according to any one of claims 1-4, characterized in that, The moisture absorption medium layer is a MOFs material.

6. The runner humidifying device according to claim 5, wherein The specific surface area of the MOFs material is 3000 - 5000 m 2 / g.

7. The runner humidifying device according to claim 5, characterized in that, The pore size of the MOFs material is 1 nm - 3 nm.

8. The runner humidifying device according to claim 7, wherein, The porosity of the MOFs material is 40% - 60%.

9. An air conditioner, characterized in that, Comprising an indoor unit, an outdoor unit, and the rotor humidifying device according to any one of claims 1 - 8, the indoor unit is connected to the outdoor unit, and the rotor humidifying device is disposed in the outdoor unit and connected to the indoor unit.

10. A control method for an air conditioner, characterized in that, Applied to the air conditioner according to claim 9, the method includes: Obtaining the humidity of the moisture absorption rotor; If the humidity of the moisture absorption rotor is greater than a first preset humidity, then supplying power to the moisture absorption rotor; Obtaining the temperature of the moisture absorption rotor; If the temperature of the moisture absorption rotor is greater than a first preset temperature, then cutting off the power supply to the moisture absorption rotor, and returning to the step of obtaining the humidity of the moisture absorption rotor; If the temperature of the moisture absorption rotor is not greater than the first preset temperature, then determining whether the humidity of the moisture absorption rotor is less than a second preset humidity, wherein the second preset humidity is less than the first preset humidity; If the humidity of the moisture absorption rotor is less than the second preset temperature, then cutting off the power supply to the moisture absorption rotor.

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