Clothes processing equipment and control method

Abstract

The invention provides clothes processing equipment and a control method. The clothes processing equipment comprises a clothes processing drum, a drying air duct and a rotating wheel; a drum air inlet and a drum air outlet are formed in the clothes processing drum, the drying air duct comprises a drum air outlet duct, a dehumidification air duct and a drum air inlet duct, and the drum air outlet, the drum air outlet duct, the dehumidification air duct, the drum air inlet duct, the drum air inlet and the clothes processing drum are sequentially communicated to form a drying airflow loop; an adsorption area is formed in the rotating wheel and is arranged in the dehumidification air duct; an evaporator is arranged at the end, close to the dehumidification air duct, of the cylinder air outlet duct and used for cooling and dehumidifying flowing drying airflow. The adsorption area is used for adsorbing and dehumidifying the flowing drying airflow; a condenser is arranged at the end, close to the dehumidification air duct, of the cylinder air inlet duct and used for heating flowing drying airflow. A fresh air inlet is formed in the cylinder air outlet duct and located in the upstream of the evaporator in the flowing direction of drying airflow. The fresh air inlet is used for conveying outdoor fresh air to the cylinder air outlet channel and mixing the outdoor fresh air with the drying airflow.

Description

Technical Field

[0001] This invention belongs to the field of clothing processing technology, and particularly relates to a clothing processing device and control method. Background Technology

[0002] With increasingly stringent energy efficiency requirements for clothes dryers, heat pump dryers have become the mainstream in the market due to their energy-saving advantages. However, existing heat pump dryers still have significant drawbacks under complex operating conditions: ①Dehumidification bottleneck: Heat pump systems rely on evaporator condensation for dehumidification. In humid environments or under high load, the amount of water evaporated from clothes far exceeds the instantaneous dehumidification capacity of the evaporator, resulting in continuous accumulation of humidity in the drying airflow (especially in closed-loop systems), which prolongs the drying time. ② Energy efficiency deterioration in low temperature and high humidity environments: When the ambient temperature is low or the humidity is high, the temperature difference between the evaporator and the air decreases, the condensation and dehumidification efficiency drops sharply, and the heat pump system is forced to extend its working time to compensate for the dehumidification loss, which significantly increases energy consumption. ③ Insufficient temperature rise of drying airflow: In a closed-loop system, the airflow temperature decreases after being cooled by the evaporator, while the condenser has limited temperature rise capacity, resulting in insufficient heat supply for clothes with high moisture content (such as thick fabrics), and reduced drying uniformity. Summary of the Invention

[0003] In view of this, the present invention provides a clothing processing device and control method to solve the problems of existing heat pump dryers, such as continuous accumulation of humidity in the drying airflow under humid environment or high load, resulting in prolonged drying time and increased energy consumption, and the limited temperature rise capacity of the condenser leading to insufficient heat supply for clothes with high moisture content and poor drying effect.

[0004] This invention provides a garment processing device, comprising: A garment processing drum, which is equipped with a drum air inlet and a drum air outlet; A heat pump module, which includes an evaporator and a condenser; The drying air duct includes a cylinder outlet air duct, a dehumidifying air duct, and a cylinder inlet air duct. The cylinder outlet, cylinder outlet air duct, dehumidifying air duct, cylinder inlet air duct, cylinder inlet air duct, and clothes handling cylinder are connected in sequence to form a drying airflow circuit. A rotating wheel has an adsorption zone, which is disposed within the dehumidification duct. The evaporator is provided at one end of the cylinder air outlet duct near the dehumidification duct for cooling and dehumidifying the flowing drying airflow; the adsorption zone is used to adsorb and dehumidify the flowing drying airflow; the condenser is provided at one end of the cylinder air inlet duct near the dehumidification duct for heating the flowing drying airflow. The cylinder air outlet duct has a fresh air inlet, which is located upstream of the evaporator along the direction of the drying airflow. The fresh air inlet is used to deliver outdoor fresh air to the cylinder air outlet duct and mix the outdoor fresh air with the drying airflow.

[0005] Further optionally, the garment processing equipment further includes a regeneration air duct through which regeneration air can flow; The cylindrical air inlet duct has a return air outlet, which is located downstream of the condenser along the flow direction of the regenerated air. The return air outlet and the environment where the garment processing equipment is located are connected through the regenerated air duct. The return air outlet can transport part of the drying airflow in the cylindrical air inlet duct to the regenerated air duct, and the regenerated air duct can discharge the drying airflow to the environment where the garment processing equipment is located. The drying airflow entering the regenerated air duct from the return air outlet is the regenerated air. The impeller also forms a regeneration zone, which is located within the regeneration duct; the regeneration zone can be dehumidified and regenerated under the action of the regeneration air; wherein, the impeller can be controlled to rotate between the dehumidification duct and the regeneration duct.

[0006] Optionally, the heat pump module further includes a subcooler disposed within the regeneration air duct and upstream of the regeneration zone along the flow direction of the regeneration air; the subcooler is used to heat the regeneration air flowing through it.

[0007] Alternatively, the refrigerant tubes of the subcooler and the refrigerant tubes of the condenser are connected in series.

[0008] Further optionally, the heat pump module further includes a superheater disposed within the regeneration air duct and along the flow direction of the regeneration air, the superheater being located downstream of the regeneration zone; the superheater is used to cool the regeneration air flowing through it.

[0009] Alternatively, the refrigerant tubes of the superheater and the refrigerant tubes of the evaporator are connected in series.

[0010] Further optionally, a bypass ventilation duct is formed between the cylinder outlet duct and the evaporator, the bypass ventilation duct being used to directly transport a portion of the drying airflow in the cylinder outlet duct to the dehumidification duct without passing through the evaporator.

[0011] The present invention also provides a control method for a garment processing device, wherein the garment processing device is any of the garment processing devices described above; the garment processing device is provided with a drying program, the drying program including multiple drying stages that run sequentially in time sequence; when the garment processing device runs the drying program, the control method includes: Determine the current drying stage of the drying process; The rotational speed of the impeller is adjusted according to the drying stage of the drying process.

[0012] Further optionally, the drying stage of the drying process and the rotational speed of the impeller satisfy the following: The later the drying stage of the drying process occurs, the higher the rotational speed of the rotary wheel.

[0013] Further optionally, determining the drying stage of the drying process includes: Obtain the drying temperature of the garment processing equipment; The drying stage of the drying process is determined based on the drying temperature of the garment processing equipment. The heat pump module further includes a compressor, and the compressor, the refrigerant pipe of the evaporator, and the refrigerant pipe of the condenser are connected to form a refrigerant circuit. The drying temperature of the clothing processing equipment includes at least one of the following: the exhaust temperature of the compressor, the suction temperature of the compressor, the temperature of the refrigerant pipe of the evaporator, the temperature of the refrigerant pipe of the condenser, the drying airflow temperature at the outlet of the evaporator, the drying airflow temperature at the inlet of the drum, the drying airflow temperature at the outlet of the drum, and the temperature of the regeneration air discharged from the regeneration duct to the environment where the clothing processing equipment is located.

[0014] Further optionally, the drying airflow temperature at the cylinder outlet and the drying stage of the drying process satisfy the following: the higher the drying airflow temperature at the cylinder outlet, the later the drying stage of the drying process is in time.

[0015] Compared with the prior art, the main advantages of the present invention are as follows: (1) Improve dehumidification efficiency and drying speed: The adsorption zone of the rotor directly adsorbs moisture in the drying airflow (especially in high humidity environments), significantly improving dehumidification capacity; the outdoor fresh air is mixed with the drying airflow upstream of the evaporator to reduce the temperature of the drying airflow entering the adsorption zone of the rotor and improve the adsorption efficiency of the rotor; the dual-stage dehumidification significantly reduces the humidity of the drying airflow before it flows back to the condenser, maximizing the heating efficiency of the condenser and shortening the drying cycle of heavy load clothes. (2) Ensure energy efficiency stability under extreme operating conditions: By introducing low-temperature and low-humidity outdoor fresh air (upstream of the evaporator), the humidity accumulation of the closed loop is broken, and the dehumidification efficiency is reduced due to insufficient temperature difference of the evaporator in high humidity environment; the outdoor fresh air mixing reduces the humidity of the drying airflow at the evaporator inlet, maintains the condensation and dehumidification efficiency of the heat pump module in low-temperature / high-humidity environment, and reduces energy consumption fluctuations. (3) Optimize the operating efficiency of the heat pump module: The evaporator is placed at the end of the cylinder outlet air duct to prioritize cooling the high humidity and heat airflow and improve the subsequent rotor adsorption efficiency; the condenser is placed at the inlet of the cylinder inlet air duct to centrally heat the dehumidified dry airflow, so that the air temperature delivered to the clothes is higher and the moisture content is lower; the optimization of the air duct heat exchange logic reduces the load demand of the heat pump compressor and improves the overall energy efficiency ratio of the system (especially under high load conditions). Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a schematic diagram of the drying principle embodiment of the clothing processing equipment provided by the present invention; Figure 2 This is a schematic flowchart of an embodiment of the control method for the clothing processing equipment provided by the present invention; Detailed Implementation The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0020] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0022] Existing heat pump dryers face three major drawbacks in closed-loop systems: Insufficient dehumidification capacity: Under high load or humid conditions, the instantaneous dehumidification capacity of the evaporator is lower than the amount of water evaporated from the clothes, leading to accumulated humidity in the airflow and prolonged drying time; Energy efficiency degradation under extreme conditions: Low temperature / high humidity environments reduce the temperature difference between the evaporator and the air, causing a sharp drop in condensation dehumidification efficiency, forcing the system to extend its operating time and resulting in a surge in energy consumption; Limited heat supply: The condenser's ability to raise the temperature of the cooled airflow is insufficient, making it difficult to meet the drying needs of thick fabrics with high moisture content, affecting uniformity. These problems stem from the single heat pump dehumidification mode and the bottlenecks in humidity and temperature control within the closed system. This invention creatively provides a clothing processing device, in which the clothing processing drum forms a closed-loop drying airflow circuit: drum outlet → drum outlet duct (equipped with an evaporator) → dehumidification duct → drum inlet duct (equipped with a condenser) → drum inlet. The evaporator is located at the end of the drum outlet duct to pre-cool the high-temperature and high-humidity airflow. Deep dehumidification is achieved through the adsorption zone of the rotating wheel. The condenser is located at the inlet of the drum inlet duct to heat the dehumidified airflow. A fresh air inlet is opened upstream of the evaporator in the drum outlet duct to introduce low-temperature and low-humidity outdoor fresh air, which mixes with the drying airflow to reduce humidity. Evaporator pre-cooling + rotary adsorption breaks through the bottleneck of single heat pump dehumidification, improves dehumidification efficiency under high humidity load, and shortens the drying cycle; low temperature and low humidity outdoor fresh air is introduced upstream of the evaporator to break the humidity accumulation and ensure the dehumidification efficiency of the heat pump in low temperature / high humidity environment, reducing energy consumption; the condenser centrally heats the airflow after deep dehumidification, increases the supply air temperature, solves the problem of insufficient heat supply to thick fabrics, and improves drying uniformity.

[0023] <Clothing Processing Equipment> like Figure 1 As shown, a garment processing device includes: A garment processing drum, which is equipped with a drum air inlet and a drum air outlet; A heat pump module, which includes an evaporator and a condenser; The drying air duct includes a drum outlet air duct, a dehumidifying air duct, and a drum inlet air duct. The drum outlet, drum outlet air duct, dehumidifying air duct, drum inlet air duct, drum inlet air duct, and clothes handling drum are connected in sequence to form a drying airflow circuit. A drying fan is installed in the drum inlet air duct. Under the action of the drying fan, the drying airflow can circulate in the drying airflow circuit, thereby drying the clothes in the clothes handling drum. The impeller has an adsorption zone, which is located inside and connected to the dehumidification duct and can flow through the drying airflow. The impeller is located between the evaporator and the condenser, and is closer to the evaporator than to the condenser. An evaporator is installed at one end of the cylinder outlet air duct near the dehumidification air duct. The evaporator is used to cool and dehumidify the flowing drying air. The adsorption zone is used to adsorb and dehumidify the flowing drying air. A condenser is installed at one end of the cylinder inlet air duct near the dehumidification air duct. The condenser is used to heat the flowing drying air. The drying fan is located downstream of the condenser along the flow direction of the drying air. The cylinder outlet duct has a fresh air inlet located upstream of the evaporator, along the direction of the drying airflow. The fresh air inlet is used to deliver outdoor fresh air to the cylinder outlet duct and mix the outdoor fresh air with the drying airflow, thereby reducing the humidity of the drying airflow and improving its quality.

[0024] Furthermore, the evaporator has an evaporator air duct, which connects to the cylinder outlet air duct and the dehumidification air duct, for passing through the drying airflow and cooling and dehumidifying the drying airflow; the condenser has a condenser air duct, which connects to the cylinder inlet air duct and the dehumidification air duct, for passing through the drying airflow and heating the drying airflow. Before flowing through the evaporator, the drying airflow in the drum outlet duct mixes with the outdoor fresh air, and then is cooled and dehumidified through the evaporator air duct. The drying airflow discharged from the evaporator air duct is then adsorbed and dehumidified in the adsorption zone of the rotor, and then heated through the condenser air duct. Finally, it enters the clothes processing drum through the drum inlet air duct and exchanges heat and moisture with the clothes to achieve the drying of the clothes. Mixed dehumidification: The moisture content of the outdoor fresh air is less than that of the drying airflow. The outdoor fresh air enters the duct outlet through the fresh air inlet and mixes with the drying airflow in the duct outlet to reduce the moisture content of the drying airflow. Cooling and dehumidification: The air mixed with the outdoor fresh air and the drying airflow flows through the evaporator duct and is cooled and dehumidified by the evaporator, further reducing the humidity of the drying airflow; Adsorption dehumidification: The mixed gas discharged from the evaporator air duct flows through the dehumidification air duct, and the adsorption zone of the rotor adsorbs and dehumidifies the mixed gas, further reducing the humidity of the drying airflow; Through these three stages of dehumidification, the moisture content of the drying airflow is greatly reduced, and the heat and moisture exchange between the clothes and the drying airflow in the clothes processing drum is greater, which can significantly improve the drying efficiency of the clothes processing equipment. Preferably, the garment processing equipment is a dryer, and the garment processing drum is a roller.

[0025] Furthermore, the garment processing equipment also includes a regeneration air duct, through which regeneration air can flow; The air inlet duct has a return air outlet, which is located downstream of the condenser along the direction of the regenerated air flow; the return air outlet and the environment where the clothing processing equipment is located are connected through the regenerated air duct. The return air outlet can transport part of the drying airflow in the inlet air duct to the regeneration air duct, and the regeneration air duct can discharge the drying airflow to the environment where the clothing processing equipment is located; among them, the drying airflow entering the regeneration air duct from the return air outlet is the regeneration air; The rotor also forms a regeneration zone, which is located in and connected to the regeneration air duct and can be flowed through the drying airflow. The regeneration zone can be dehumidified and regenerated under the action of the regeneration air. The rotor can be controlled to rotate between the dehumidification air duct and the regeneration air duct, thereby adsorbing and dehumidifying the flowing drying airflow through the adsorption zone, and dehumidifying and regenerating the regeneration zone under the action of the regeneration air. Preferably, the regeneration air duct is located above the dehumidification air duct; a portion of the rotor is located inside the dehumidification air duct, and this portion is the adsorption zone; another portion of the rotor is located inside the regeneration air duct, and this portion is the regeneration zone; the adsorption zone and the regeneration zone are arranged opposite to each other in the circumferential direction of the rotor, both the adsorption zone and the regeneration zone are fan-shaped structures, and the area of ​​the adsorption zone is larger than the area of ​​the regeneration zone; the portion of the rotor inside the dehumidification air duct can adsorb and dehumidify the drying airflow, and the portion of the rotor inside the regeneration air duct can dehumidify and regenerate under the action of regeneration air.

[0026] The ratio of the drying airflow entering the garment processing drum to the regeneration airflow entering the regeneration duct is mainly determined by the area ratio between the adsorption zone and the regeneration zone of the rotor and the airflow of the drying fan; generally speaking, the wind speed of the regeneration airflow entering the regeneration duct should not be less than 2m / s.

[0027] The following describes the structure required for the dehumidification and regeneration of the regeneration zone by the drying airflow heated by the condenser. The heat pump module also includes a subcooler. The subcooler is installed in the regeneration air duct and is located upstream of the regeneration zone along the direction of the regeneration airflow. The subcooler is used to heat the regeneration airflow. The increased subcooling of the condenser improved the efficiency of the heat pump module.

[0028] Preferably, the refrigerant pipes of the subcooler and the refrigerant pipes of the condenser are connected in series.

[0029] A subcooler can be installed or not, depending on actual needs. When no subcooler is installed, the drying airflow (regeneration air) discharged from the condenser is used directly to dehumidify and regenerate the regeneration zone. When a subcooler is installed, the drying airflow discharged from the subcooler is used directly to dehumidify and regenerate the regeneration zone. Increasing the subcooling of the heat pump module can further increase the temperature of the dehumidification and regeneration zone, improve the dehumidification efficiency of the rotor, and thus further improve the efficiency of the heat pump module.

[0030] The following describes the structure required for cooling the regenerated air discharged from the regenerated air duct. The heat pump module also includes a superheater. The superheater is located in the regenerated air duct and along the flow direction of the regenerated air, downstream of the regeneration zone. The superheater is used to cool the regenerated air flowing through it.

[0031] Preferably, the refrigerant pipes of the superheater and the refrigerant pipes of the evaporator are connected in series.

[0032] A superheater can be installed or not, depending on actual needs. When no superheater is installed, the regenerated air discharged from the regeneration duct is directly discharged to the environment where the clothing processing equipment is located. When a superheater is installed, the regenerated air discharged from the regeneration zone is cooled down by the superheater before being discharged to the environment where the clothing processing equipment is located, thereby increasing the superheat of the heat pump module and further improving the efficiency of the heat pump module.

[0033] The heat pump module also includes a compressor and a throttling device. The compressor, condenser, subcooler, throttling device, evaporator, and superheater are connected through refrigerant pipelines to form a refrigerant circuit. By cleverly utilizing a subcooler connected in series with the refrigerant pipes of the condenser to heat the drying airflow discharged from the condenser, and a superheater connected in series with the refrigerant pipes of the evaporator to cool the regeneration air discharged from the regeneration zone, the refrigerant can be utilized more effectively, further enhancing the subcooling and superheating of the heat pump module and improving its efficiency. This design not only improves the system's energy efficiency ratio but also significantly shortens the drying time, fully utilizing the dehumidification characteristics of the rotor to enhance the efficiency of the heat pump module. Especially in the later stages of drying, due to the reduced moisture content of the drying airflow, the heat pump module generates excessive heat, making it difficult to lower the evaporator temperature. At this time, utilizing the dehumidification process of the rotor and adjusting the operating status of the heat pump module using the superheater and subcooler is highly effective.

[0034] In addition, a bypass ventilation duct is formed between the cylinder outlet air duct and the evaporator. The bypass ventilation duct is used to directly transport part of the drying airflow in the cylinder outlet air duct to the dehumidification air duct without passing through the evaporator. Primary utilization: By setting up a bypass ventilation duct to recover the heat of the drying airflow in the cylinder outlet duct, the workload of the condenser and evaporator is reduced, thereby achieving rapid heating and heat reuse; Secondary utilization: Part of the drying airflow discharged from the condenser is used to dehumidify and regenerate the regeneration zone, further accelerating the drying speed while avoiding the need for additional dehumidification heating devices; Significantly reduces energy waste and improves the system's energy efficiency ratio; Especially under high humidity or high load conditions, the energy consumption of the heat pump module is greatly reduced, meeting the requirements of energy conservation and environmental protection.

[0035] A bypass ventilation duct can be installed or not, depending on actual needs. When a bypass ventilation duct is installed, part of the drying airflow inside the drum outlet duct bypasses the evaporator and directly enters the dehumidification duct. The dehumidification duct makes it easier for the drying airflow discharged from the bypass ventilation duct to mix with the drying airflow discharged from the evaporator. On the one hand, the residual cooling of the evaporator is used for dehumidification, and on the other hand, the outlet air temperature of the evaporator duct is increased. Therefore, the evaporator cools and dehumidifies the drying airflow inside the drum outlet duct, while increasing the outlet air temperature of the evaporator duct, which can speed up the rapid heating phase in the early stage of the drying process of the clothing processing equipment. Specifically, whether or not to install a bypass duct depends on a combination of factors, including the evaporator's cooling capacity, the mixing effect of the drying airflow discharged from the evaporator duct and the drying airflow discharged from the bypass duct, the desiccant's moisture absorption capacity, and the temperature of the drying airflow at the cylinder inlet. A bypass duct can be installed when the evaporator's cooling capacity meets the temperature requirement of the mixture of the drying airflow discharged from the evaporator duct and the drying airflow discharged from the bypass duct (i.e., when the evaporator's cooling capacity can ensure that the temperature of the mixture is lower than the dew point temperature of the drying airflow discharged from the bypass duct). A bypass duct can also be installed when the desiccant's moisture absorption capacity is sufficiently large, and when the temperature of the drying airflow at the cylinder inlet is high.

[0036] When a variable frequency compressor is selected, the compressor's operating frequency is mainly adjusted and changed according to the protection logic, mode operation logic, and air supply temperature requirements set in the garment processing equipment. When a fixed-frequency compressor is selected, the operating frequency of the compressor must not be changed; In this embodiment, the number of rotors can be increased or their positions optimized to distribute the dehumidification capacity more evenly; for example, another rotor can be added to ensure effective dehumidification even in high humidity environments.

[0037] The setting of subcoolers and superheaters mainly depends on the cooling capacity of the evaporator, the temperature of the drying airflow at the air outlet of the evaporator air duct, whether it is necessary to cool the regeneration air, and the operation of the heat pump module. When the temperature of the subcooler is higher than the temperature of the drying airflow at the outlet of the condenser duct and the regeneration air needs to be cooled, both the subcooler and the superheater are installed. When the temperature of the subcooler is higher than the temperature of the drying airflow at the outlet of the condenser, and the regeneration air can be discharged without cooling, only the subcooler is installed. When the temperature of the subcooler is lower than the temperature of the drying airflow at the outlet of the condenser, and the regeneration airflow needs to be cooled before being discharged, only the superheater is installed. If the temperature of the drying airflow at the condenser outlet is high enough to meet the dehumidification requirements, and the regenerated air meets the emission requirements, then a subcooler and a superheater are not required.

[0038] <Control Methods> like Figure 2 As shown, this embodiment provides a control method for a garment processing device, wherein the garment processing device is any of the garment processing devices described above; the garment processing device is provided with a drying program, which includes multiple drying stages that run sequentially in time sequence; when the garment processing device runs the drying program, the control method includes: S1. Determine the current drying stage of the drying process; S2. Adjust the rotation speed of the impeller according to the drying stage of the drying program.

[0039] Furthermore, the drying stage of the drying process and the rotation speed of the rotor satisfy the following: The later the drying stage in the drying process, the higher the rotation speed of the rotor.

[0040] The following describes the method for determining the drying stage of the drying process, S1 including: Obtain the drying temperature of the garment processing equipment; The drying stage of the drying process is determined based on the drying temperature of the garment processing equipment. The drying temperature of the garment processing equipment includes at least one of the following: the compressor exhaust temperature, the compressor suction temperature, the temperature of the refrigerant pipe of the evaporator, the temperature of the refrigerant pipe of the condenser, the drying airflow temperature at the outlet of the evaporator, the drying airflow temperature at the inlet of the drum, the drying airflow temperature at the outlet of the drum, and the temperature of the regenerated air discharged from the regenerated air duct to the environment where the garment processing equipment is located.

[0041] Furthermore, the temperature of the drying airflow at the outlet of the cylinder and the drying stage of the drying process satisfy the following: the higher the temperature of the drying airflow at the outlet of the cylinder, the later the drying stage of the drying process is in time.

[0042] The adsorption zone can efficiently adsorb moisture from the drying airflow and quickly discharge the humid drying airflow through the regeneration air duct, reducing the humidity of the drying airflow and thus significantly improving the dehumidification efficiency of clothes. Combined with the design of the bypass air duct, it can achieve deep dehumidification, rapid circulation and heat reuse of the humid and hot drying airflow, further shortening the drying time and meeting users' needs for rapid drying. At the same time, through the dual control of temperature and humidity, it can significantly improve the drying uniformity of clothes, avoid the problems of over-drying or incomplete drying, and improve the care effect of clothes. The following example, using the temperature of the drying airflow at the air outlet of the evaporator duct, further illustrates that when the drying fan starts running, the drying airflow in the clothes handling drum begins to exchange heat with the clothes. When the temperature of the drying airflow at the air outlet of the evaporator duct is below 15°C, it is determined to be the initial drying stage of the drying process. At this time, the temperature of the drying airflow in the clothes processing drum is low, and the rotor runs at the first speed. When the temperature of the drying airflow at the outlet of the evaporator duct is between 15℃ and 25℃, the rotor runs at the second speed. When the temperature of the drying airflow at the outlet of the evaporator duct is between 25°C and 35°C, the rotor operates at the third speed. When the temperature of the drying airflow at the air outlet of the evaporator duct is higher than 35°C, it is determined to be in the middle and late stages of the drying process. At this time, the moisture content of the drying airflow in the clothes processing drum is relatively high, and the rotor runs at the fourth speed. When the drying fan stops running, the impeller stops rotating; Among them, the fourth speed ≥ the third speed ≥ the second speed ≥ the first speed.

[0043] Specifically, the rotational speed of the impeller needs to take into account the moisture absorption and desiccation performance of the adsorption material. Simultaneously, the product's rotational speed must be considered in conjunction with parameters such as the area ratio between the adsorption and regeneration zones of the impeller, the inlet air temperature set by the heat pump module, and the dehumidification airflow rate in the regeneration duct. Generally, for materials with good adsorption performance, such as MOFs, when the area ratio between the adsorption and regeneration zones is 1:1, the range of the first to fourth rotational speeds can be set to 40 seconds / revolution to 150 seconds / revolution. The selection of the impeller's rotational speed range involves many factors. For different products, different adsorption materials, heat pump module selection, impeller settings, etc., the rotational speed must be determined after matching. The rotational speed of the rotor can be divided into multiple levels, and the temperature of the drying airflow at the outlet of the evaporator duct can be divided into multiple levels. The division of the drying stages in the drying program is mainly related to the moisture absorption performance of the rotor. It is determined according to the relationship between the moisture absorption amount, moisture absorption rate and drying airflow temperature of the rotor adsorption material. It is necessary to ensure that the rate of moisture reduction is close within the divided drying stages as much as possible.

[0044] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1.A laundry treating apparatus, characterized by, The laundry treatment device comprises: a laundry treatment drum provided with a drum air inlet and a drum air outlet; a heat pump module comprising an evaporator and a condenser; a drying air duct comprising a drum air outlet duct, a dehumidification air duct, and a drum air inlet duct, the drum air outlet, the drum air outlet duct, the dehumidification air duct, the drum air inlet duct, the drum air inlet, and the laundry treatment drum being sequentially communicated to form a drying air flow loop; a rotary wheel formed with an adsorption zone, the adsorption zone being arranged in the dehumidification air duct; the drum air outlet duct is provided with the evaporator at one end close to the dehumidification air duct, for cooling and dehumidifying the drying air flow flowing therethrough; the adsorption zone is for adsorbing and dehumidifying the drying air flow flowing therethrough; the drum air inlet duct is provided with the condenser at one end close to the dehumidification air duct, for heating the drying air flow flowing therethrough; the drum air outlet duct is formed with a fresh air inlet, the fresh air inlet being located upstream of the evaporator along the flow direction of the drying air flow; the fresh air inlet is for conveying outdoor fresh air into the drum air outlet duct and mixing the outdoor fresh air with the drying air flow. 2.The laundry treating apparatus of claim 1, wherein Further comprising a regeneration air duct, the regeneration air duct being capable of flowing through regeneration air; the drum air inlet duct is formed with a return air outlet, the return air outlet being located downstream of the condenser along the flow direction of the regeneration air; the return air outlet and an environment in which the laundry treatment device is located are communicated through the regeneration air duct; the return air outlet is capable of conveying part of the drying air flow in the drum air inlet duct into the regeneration air duct, and the regeneration air duct is capable of discharging the drying air flow into the environment in which the laundry treatment device is located; wherein the drying air flow entering the regeneration air duct from the return air outlet is the regeneration air; the rotary wheel is further formed with a regeneration zone, the regeneration zone being arranged in the regeneration air duct; the regeneration zone is capable of being dehumidified and regenerated under the action of the regeneration air; wherein the rotary wheel is capable of being controlled to rotate between the dehumidification air duct and the regeneration air duct. 3.The laundry treating apparatus of claim 2, wherein The heat pump module further comprises a subcooler, the subcooler being arranged in the regeneration air duct and located upstream of the regeneration zone along the flow direction of the regeneration air; the subcooler is for heating the regeneration air flowing therethrough. 4.The laundry treating apparatus of claim 3, wherein The refrigerant pipe of the subcooler and the refrigerant pipe of the condenser are connected in series. 5.The laundry treating apparatus according to claim 2, wherein, The heat pump module further comprises a superheater, the superheater being arranged in the regeneration air duct and located downstream of the regeneration zone along the flow direction of the regeneration air; the superheater is for cooling the regeneration air flowing therethrough. 6.The laundry treating apparatus according to claim 5, characterized by, The refrigerant pipe of the superheater and the refrigerant pipe of the evaporator are connected in series. 7.The laundry treating apparatus according to claim 2, wherein, A bypass air duct is formed between the drum air outlet duct and the evaporator, the bypass air duct being for conveying part of the drying air flow in the drum air outlet duct directly to the dehumidification air duct without passing through the evaporator. 8.A control method of a laundry treating apparatus, characterized by, The laundry treatment device is the laundry treatment device according to any one of claims 2 to 7; the laundry treatment device is provided with a drying program, the drying program comprising a plurality of drying stages sequentially operated in time sequence; when the laundry treatment device operates the drying program, the control method comprises: judging the drying stage in which the drying program is located; adjusting the rotating speed of the rotary wheel according to the drying stage in which the drying program is located. 9.The control method of a laundry treating apparatus according to claim 8, characterized in that, The drying stage in which the drying program is located and the rotating speed of the rotary wheel satisfy: The faster the rotation speed of the drum is, the later the drying phase of the drying program is in time. 10.The control method of a laundry treating apparatus according to claim 9, characterized in that, The determining the drying phase of the drying program comprises: obtaining a drying temperature of the clothes treatment device; determining the drying phase of the drying program according to the drying temperature of the clothes treatment device; The heat pump module further comprises a compressor, and the compressor, the refrigerant pipe of the evaporator and the refrigerant pipe of the condenser are communicated to form a refrigerant circuit; the drying temperature of the clothes treatment device comprises at least one of the exhaust temperature of the compressor, the suction temperature of the compressor, the temperature of the refrigerant pipe of the evaporator, the temperature of the refrigerant pipe of the condenser, the drying airflow temperature at the outlet end of the evaporator, the drying airflow temperature at the inlet of the drum, the drying airflow temperature at the outlet of the drum and the regeneration air temperature discharged from the regeneration air duct to the environment of the clothes treatment device. 11.The control method of a laundry treating apparatus according to claim 10, characterized in that, The drying airflow temperature at the outlet of the drum and the drying phase of the drying program satisfy: the greater the drying airflow temperature at the outlet of the drum is, the later the drying phase of the drying program is in time.

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