Clothes dryer

Abstract

The embodiment of the invention provides a clothes dryer. The clothes dryer comprises a box body; a drum; a compressor; a condenser; an evaporator; presetting a pipeline; the capillary is connected with the preset pipeline in parallel; the evaporator is connected with the condenser; a driving motor; a temperature sensor; the controller is electrically connected with the driving motor, the temperature sensor and the heat pump system, and the controller is configured to execute the following steps that in response to a preset clothes drying instruction, the driving motor is controlled to rotate at a preset rotating speed, and the compressor is started; the preset pipeline is controlled to be in a circulation state; acquiring a first real-time temperature of the circulating gas; judging whether the first real-time temperature reaches a preset first target temperature or not; and under the condition that the first real-time temperature reaches the preset second target temperature or above, the preset pipeline is controlled to be in a cut-off state. In this way, the temperature rise efficiency of the circulating gas is improved, and the drying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of clothes dryers, and in particular to a clothes dryer. Background Art

[0002] A clothes dryer is a household appliance used to dry wet clothes. It uses a heat pump to heat fresh, cold air into dry, hot air. This hot, dry air then exchanges heat with the clothes tumbling in a drum. This allows moisture in the clothes to gradually evaporate due to the sufficient heat exchange with the dry, hot air, thus drying the clothes.

[0003] In related art, when a clothes dryer is operating, the condenser surface is high and the evaporator surface is low. The compressor works on the refrigerant, converting electrical energy into heat energy. This heat energy then exchanges heat with the circulating air in the dryer through the condenser, raising the temperature of the circulating air. However, due to the low surface temperature of the evaporator, the evaporator exchanges heat with the circulating air, lowering its temperature. This slows the rate of temperature increase and reduces drying efficiency.

[0004] Therefore, there is an urgent need for a clothes dryer that can improve drying efficiency. Summary of the Invention

[0005] To solve the above technical problems, an embodiment of the present application provides a clothes dryer.

[0006] According to one aspect of an embodiment of the present application, the embodiment of the present application provides a clothes dryer, comprising: a housing; a drum, arranged in the housing; the drum is used to accommodate clothes to be dried; a compressor, used to perform work on a refrigerant; a condenser, connected to the compressor; the condenser is used to heat a circulating gas using a refrigerant; an evaporator, connected to the compressor and the condenser; the evaporator is used to heat or cool the circulating gas using a refrigerant; a preset pipeline, used to connect the evaporator and the condenser; a capillary tube, connected in parallel with the preset pipeline, which is used to connect the evaporator and the condenser; a drive motor, used to provide rotational power to the drum; a temperature sensor, used to detect the temperature of the clothes dryer. The real-time temperature of the circulating gas in the machine; a controller electrically connected to the drive motor, the temperature sensor and the heat pump system, the controller being configured to perform the following steps: in response to a preset clothes drying instruction, controlling the drive motor to rotate at a preset speed and turning on the compressor; controlling the preset pipeline to be in a flow state so as to heat the circulating gas by using the evaporator and the condenser; obtaining a first real-time temperature of the circulating gas; determining whether the first real-time temperature reaches or exceeds a preset first target temperature; and when the first real-time temperature reaches or exceeds a preset second target temperature, controlling the preset pipeline to be in a cut-off state so as to cool the circulating gas by using the evaporator.

[0007] In the above embodiment, in response to a preset clothes drying command, the drive motor is controlled to rotate at a preset speed and the compressor is turned on. A preset pipeline is then controlled to be in a flow state, allowing the evaporator and condenser to heat the circulating gas. A first real-time temperature of the circulating gas is obtained. A determination is made as to whether the first real-time temperature reaches or exceeds a preset first target temperature. If the first real-time temperature reaches or exceeds a preset second target temperature, the preset pipeline is controlled to be in a shut-off state, allowing the evaporator to cool the circulating gas. In this manner, the preset pipeline is first controlled to be in a flow state, allowing the evaporator and condenser to simultaneously heat the circulating gas, rapidly raising the circulating gas temperature. Then, if the first real-time temperature of the circulating gas reaches or exceeds the preset second target temperature, the preset pipeline is controlled to be in a shut-off state, allowing the evaporator to cool the circulating gas and extract moisture from the circulating gas. This increased temperature-raising efficiency of the circulating gas allows the dryer to quickly enter the moisture extraction phase, thereby improving the drying efficiency of the dryer.

[0008] In one embodiment of the present application, based on the above solution, when the preset pipeline is in a flow state, the pressures of the condenser and the evaporator are equal.

[0009] In the above embodiment, since there is no pressure difference between the condenser and the evaporator, the refrigerants in the condenser and the evaporator are both in a high-temperature state, and both transfer heat to the circulating gas at the same time, thereby improving the heat transfer efficiency.

[0010] In one embodiment of the present application, based on the aforementioned solution, when the preset pipeline is in a flow state, the refrigerant flows from the condenser to the evaporator through the preset pipeline and the capillary tube.

[0011] In the above embodiment, there is no pressure difference between the condenser and the evaporator, resulting in the refrigerants in the condenser and the evaporator being in a high temperature state. Both transfer heat to the circulating gas at the same time, thereby improving the heat transfer efficiency.

[0012] In one embodiment of the present application, based on the aforementioned solution, when the preset pipeline is in a cut-off state, the refrigerant flows from the condenser to the evaporator through the capillary tube.

[0013] In the above embodiment, the condenser heats the circulating gas and the evaporator cools the circulating gas, thereby maintaining the temperature of the gas circulating in the drum while precipitating moisture in the circulating gas.

[0014] In one embodiment of the present application, based on the above solution, when the preset pipeline is in a cut-off state, the pressure of the condenser reaches a pressure higher than the pressure of the evaporator.

[0015] In the above embodiment, since the pressure of the condenser reaches higher than the pressure of the evaporator, the refrigerant in the condenser is in a high-temperature state, and the refrigerant in the evaporator is in a high-temperature state, thereby maintaining the temperature of the gas circulating in the drum while precipitating moisture in the circulating gas.

[0016] In one embodiment of the present application, based on the above solution, the dryer further includes a valve; the valve is used to control the preset pipeline to be in a flow state; the controller is further configured to perform the following steps: opening the valve.

[0017] In the above embodiment, the preset pipeline can be controlled to be in a flow state so that the circulating gas can be heated by the evaporator and the condenser, thereby increasing the temperature rise rate of the circulating temperature, facilitating the dryer to quickly enter the stage of condensed water precipitation, and improving the drying efficiency.

[0018] In one embodiment of the present application, based on the above solution, the dryer further includes a valve; the valve is used to control the preset pipeline to be in a cut-off state; the controller is further configured to perform the following steps: closing the valve.

[0019] In the above embodiment, the preset pipeline can be controlled to be in a cut-off state, so that the evaporator is used to cool the circulating gas and precipitate moisture in the circulating gas.

[0020] In one embodiment of the present application, based on the aforementioned scheme, the controller is further configured to perform the following steps: obtaining a second real-time temperature of the circulating gas; determining whether the second real-time temperature reaches below a preset second target temperature; and when the second real-time temperature reaches below the preset second target temperature, re-adjusting the on-off state of the preset pipeline to adjust the temperature of the circulating gas using the evaporator and the condenser.

[0021] In the above embodiment, the dryer can be controlled to alternately enter the heating stage and the condensing stage by the real-time temperature of the circulating gas, so that the circulating gas can be kept at a high temperature as much as possible to quickly precipitate moisture, thereby improving the drying efficiency.

[0022] In one embodiment of the present application, based on the aforementioned scheme, the controller is further configured to perform the following steps: obtaining the drying time of the dryer; determining whether the drying time reaches or exceeds a preset target time; and turning off the drive motor and the compressor when the drying time reaches or exceeds the target time.

[0023] In the above embodiment, whether to turn off the drive motor and the compressor can be determined according to the drying time, thereby determining whether the drying is completed according to the drying time and ensuring the drying effect.

[0024] In one embodiment of the present application, based on the aforementioned scheme, the controller is further configured to perform the following steps: obtaining the real-time humidity of the clothes to be dried; determining whether the real-time humidity reaches below a preset target humidity; and turning off the drive motor and the compressor when the real-time humidity reaches below the target humidity.

[0025] In the above embodiment, whether to turn off the drive motor and the compressor can be determined according to the real-time humidity of the clothes to be dried, thereby determining whether the drying is completed according to the real-time humidity of the clothes to be dried and ensuring the drying effect.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, serving to explain the principles of the present application. It is obvious that the drawings described below are merely some embodiments of the present application, and a person of ordinary skill in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0028] Figure 1 is a schematic diagram illustrating a circuit connection principle of a clothes dryer according to an exemplary embodiment of the present application;

[0029] Figure 2 is a structural schematic diagram of a clothes dryer shown in an exemplary embodiment of the present application;

[0030] Figure 3 is a flow chart of steps that can be executed by a controller in a clothes dryer provided by an exemplary embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of a scenario in which a clothes dryer obtains a preset drying instruction, provided by an exemplary embodiment of the present application;

[0032] Figure 5 is a schematic diagram of a scenario in which a clothes dryer obtains a preset drying instruction, provided by another exemplary embodiment of the present application;

[0033] Figure 6 This is a flowchart of steps after controlling the preset pipeline to be in a cut-off state provided by an exemplary embodiment;

[0034] Figure 7 is a flow chart of steps that can be executed by a controller in a clothes dryer provided by another exemplary embodiment of the present application;

[0035] Figure 8 4 is a flowchart of steps that can be executed by a controller in a clothes dryer provided by another exemplary embodiment of the present application.

[0036] Description of reference numerals:

[0037] 10: Clothes dryer; 11: Cabinet; 12: Drum; 13: Drive motor; 14: Controller; 15: Belt; 16: Motor shaft; 17: Impeller; 18: Condenser; 19: Compressor; 20: Evaporator; 21: Preset pipeline; 22: Capillary tube; 23: Valve; 24: Temperature sensor; 25: Humidity sensor. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0039] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0040] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0041] It should also be noted that the term "plurality" used in this application refers to two or more than two. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0042] In the specification, claims, and drawings of this application, the terms "first," "second," "third," and "fourth," etc., are used to distinguish different objects, not to describe a particular order. The terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0043] Currently, when a clothes dryer is operating, the condenser surface is high and the evaporator surface is low. The compressor works on the refrigerant, converting electrical energy into heat energy. This heat energy then exchanges heat with the circulating air in the dryer through the condenser, raising the temperature of the circulating air. However, due to the low surface temperature of the evaporator, the evaporator exchanges heat with the circulating air, lowering its temperature. This slows the temperature rise and reduces drying efficiency.

[0044] In order to solve the above technical problems, the present application proposes a clothes dryer that can improve drying efficiency.

[0045] See also Figure 1 and Figure 2 , Figure 1 Schematic diagram of circuit connection principle of a clothes dryer provided by an exemplary embodiment of the present application. Figure 2 Schematic diagram of the structure of a clothes dryer provided by an exemplary embodiment of the present application.

[0046] like Figure 1 and Figure 2 As shown, the dryer 10 may include a housing 11. The housing 11 is the external structure of the dryer 10 and is used to secure and protect the internal components. The housing 11 is typically made of metal or plastic. A door is typically provided on the housing 11, which is typically equipped with a sealing ring to prevent water leakage. The housing 11 is also typically provided with a display screen and a control panel, which may have buttons, knobs, or a touch screen. A bottom air duct is also provided at the bottom of the housing 11. The bottom air duct is connected to the drum 12 via a first air duct and a second air duct, thereby circulating the circulating air within the dryer. The first air duct is located on the side of the housing close to the door, i.e., the front air duct. The second air duct is located on the side of the housing away from the door, i.e., the rear air duct. The circulating air circulates in the direction of "drum - first air duct - bottom air duct - second air duct - drum."

[0047] A water storage tank is built into the bottom air duct to store the condensed water produced when the circulating air exchanges heat with the refrigerant.

[0048] The clothes dryer 10 may include a drum 12. The drum 12 is disposed inside the housing 11 and is typically made of stainless steel. The drum 12 is used to hold clothes to be dried so as to dry the clothes. The drum rotates to heat the clothes evenly so as to remove moisture from the clothes.

[0049] The clothes to be dried are placed into the drum 12 through a door provided on the housing 11 .

[0050] The clothes dryer 10 may include a compressor 19. The compressor 19 is disposed inside the housing 11 and is configured to perform work on the refrigerant to convert electrical energy into heat energy of the refrigerant. That is, the temperature of the refrigerant increases after passing through the compressor.

[0051] The clothes dryer 10 may include a condenser 18. The condenser 18 is disposed in the bottom air duct of the housing 11. The condenser 18 is connected to a compressor 19. The condenser 18 is used to heat the circulating gas using a refrigerant.

[0052] The clothes dryer 10 may include an evaporator 20. The evaporator 20 is disposed in the bottom air duct of the housing 11. The evaporator 20 is connected to the compressor 19 and the condenser 18. The evaporator 20 is used to heat or cool the circulating gas using a refrigerant.

[0053] The clothes dryer 10 may include a pre-set pipe 21 . The pre-set pipe 21 is used to connect the evaporator 20 and the condenser 18 .

[0054] The clothes dryer 10 may include a valve 23. The valve 23 is provided in the preset pipeline 21. The valve 23 is used to control the preset pipeline to be in a flow state or a cut-off state.

[0055] The clothes dryer 10 may include a capillary tube 22. The capillary tube 22 is connected in parallel with the preset pipeline 21. The capillary tube 22 is used to connect the evaporator 20 and the condenser 18.

[0056] It should be noted that the preset pipeline 21 is a conventional bore pipe.

[0057] Furthermore, when the preset pipeline is in a flowing state, the pressure in the condenser and evaporator is equal. Thus, since there is no pressure difference between the condenser and evaporator, the refrigerant in both the condenser and evaporator is at a high temperature, and both transfer heat to the circulating gas simultaneously, improving heat transfer efficiency.

[0058] Furthermore, when the pre-set pipeline is in a flowing state, the refrigerant flows from the condenser to the evaporator through the pre-set pipeline and the capillary tube. This eliminates the pressure difference between the condenser and the evaporator, causing the refrigerant in both the condenser and the evaporator to be at a high temperature. Both of them transfer heat to the circulating gas, improving heat transfer efficiency.

[0059] Furthermore, when the preset pipeline is cut off, the refrigerant flows from the condenser to the evaporator through the capillary tube. This allows the condenser to heat the circulating gas and the evaporator to cool the circulating gas, thereby maintaining the temperature of the gas circulating in the drum while precipitating moisture from the circulating gas.

[0060] Furthermore, when the preset pipeline is in the cut-off state, the pressure of the condenser reaches a higher level than that of the evaporator. This causes the refrigerant in the condenser to reach a high temperature, while the refrigerant in the evaporator also reaches a high temperature. This allows the temperature of the gas circulating in the drum to be maintained while moisture is precipitated from the circulating gas.

[0061] The clothes dryer 10 may include a drive motor 13. The drive motor 13 is a power source for the clothes dryer 10. The drive motor 13 is used to provide rotational power to the drum 12 and the impeller 17.

[0062] The clothes dryer 10 may include a belt 15. One end of the belt 15 is sleeved on the driving motor 13, and the other end of the belt 15 is sleeved on the drum 12 through a pulley.

[0063] In some embodiments of the present application, the drive motor 13, belt 15, and drum 12 form a transmission system. As the drive motor 13 rotates, the friction generated by the tension between the belt and pulley transmits the power of the drive motor 13 to the drum 12, causing the drum to rotate. This allows the dry, hot air to fully mix with the tumbling clothes, improving the drying effect.

[0064] The clothes dryer 10 may include an impeller 17. The impeller 17 is disposed in the second air duct. The impeller 17 generates wind force by rotating, thereby increasing the speed of air circulation.

[0065] The clothes dryer 10 may include a motor shaft 16 . The motor shaft 16 is used to connect the driving motor 13 and the impeller 17 .

[0066] In some embodiments of the present application, the drive motor 13, the motor shaft 16 and the impeller 17 constitute a gas power system. The rotation of the drive motor 13 drives the motor shaft 16 to rotate, thereby rotating the impeller 17 and increasing the air circulation rate.

[0067] The clothes dryer 10 may include a temperature sensor 24. The temperature sensor 24 is disposed in the drum, the first air duct, the bottom air duct, or the second air duct. The temperature sensor 24 is used to detect the real-time temperature of the circulating air in the clothes dryer.

[0068] The clothes dryer 10 may include a humidity sensor 25. The humidity sensor 25 is provided in the drum and is used to detect the humidity of the clothes to be dried.

[0069] The clothes dryer 10 may include a controller 14. The controller 14 is electrically connected to the humidity sensor 25, the temperature sensor 24, the driving motor 13, and the compressor 19, respectively.

[0070] See also Figure 3 , Figure 3 1 is a flowchart of steps that can be executed by a controller in a clothes dryer according to an exemplary embodiment of the present application. The controller can be configured to execute the following steps S310 to S350:

[0071] Step S310 , in response to a preset clothes drying instruction, controlling the driving motor to rotate at a preset speed and turning on the compressor.

[0072] Step S320: Control the preset pipeline to be in a flow state to heat the circulating gas using the evaporator and the condenser.

[0073] Step S330: obtaining a first real-time temperature of the circulating gas.

[0074] Step S340: Determine whether the first real-time temperature reaches or exceeds a preset first target temperature.

[0075] In step S350 , when the first real-time temperature reaches or exceeds a preset second target temperature, the preset pipeline is controlled to be in a cut-off state so as to utilize the evaporator to cool the circulating gas.

[0076] The following describes these five steps in detail.

[0077] In step S310, the preset clothes drying instruction is a control instruction instructing the dryer to start drying.

[0078] In some optional embodiments, such as Figure 4 As shown, Figure 4 A schematic diagram of a scenario in which a clothes dryer obtains a preset drying instruction is provided as an exemplary embodiment of the present application. Figure 4 As shown, after user 41 places clothes to be dried into the drum, they press the start drying button on the control panel 42 of dryer 10. Dryer 10 detects this and automatically generates a preset clothes drying instruction. This process can be considered as the user issuing the preset clothes drying instruction to the dryer via the control panel.

[0079] In other optional embodiments, such as Figure 5 As shown, Figure 5 A schematic diagram of a scenario in which a clothes dryer obtains a preset drying instruction is provided as another exemplary embodiment of the present application. Figure 5 As shown, after user 41 places clothes to be dried into the drum, the user sends a preset clothes drying instruction to dryer 10 through a clothes dryer control program on a user terminal 51, such as a mobile phone, tablet, or smartwatch. Upon receiving the clothes drying instruction sent by user terminal 51, dryer 10 starts drying the clothes to be dried.

[0080] The preset speed is the target speed of the motor. The target speed can be a preset default speed or can be obtained by calculating the mass of the clothes to be dried and the collected data.

[0081] Furthermore, the compressor is turned on, that is, the compressor is controlled to operate at a preset frequency.

[0082] It should be noted that the preset frequency is the target frequency of the compressor. The target frequency can be a preset default frequency or can be obtained by the mass of the clothes to be dried and the collected calculation.

[0083] In step S320, the controller is further configured to open the valve. This allows the preset pipeline to be in a flow state, so that the evaporator and condenser can heat the circulating gas, thereby increasing the temperature rise rate of the circulating temperature, allowing the dryer to quickly enter the stage of condensed water precipitation, and improving drying efficiency.

[0084] In step S330, the first real-time temperature of the circulating gas is the real-time temperature detected by the temperature sensor after the preset pipeline is controlled to be in a flow state, that is, the real-time temperature detected by the temperature sensor after the valve is opened. The flow state indicates that the refrigerant can flow in the preset pipeline.

[0085] In step S340, the preset first target temperature is the critical temperature of the two drying stages of the clothes dryer.

[0086] It should be noted that the drying process of the clothes dryer has two drying stages, including a heating stage and a condensing stage.

[0087] In some embodiments of the present application, during the warming phase, the real-time temperature of the circulating air in the dryer is low, slowing the evaporation rate of moisture from the laundry to be dried, resulting in low moisture content in the circulating air. Because the circulating air is heated during the warming phase, the real-time temperature of the circulating air increases, and the dryer's drying process enters the condensation phase. During the condensation phase, the real-time temperature of the circulating air in the drum is maintained at a first target temperature, resulting in a high temperature for the laundry to be dried, rapid evaporation of moisture from the laundry to be dried, and a high moisture content in the circulating air, facilitating condensation and precipitation of the moisture in the circulating air. Therefore, the preset first target temperature serves as the critical temperature between the dryer's two drying phases.

[0088] Furthermore, when the first real-time temperature reaches below a preset second target temperature, the preset pipeline is continuously controlled to be in a flow state, so as to heat the circulating gas by using the evaporator and the condenser.

[0089] It should be noted that the first real-time temperature reaching below the preset second target temperature may indicate that the first real-time temperature is lower than the preset second target temperature, or may indicate that the first real-time temperature is lower than or equal to the preset second target temperature.

[0090] In step S350 , the cutoff state indicates that the refrigerant cannot flow in the preset pipeline.

[0091] Furthermore, the controller is further configured to close the valve, so that the preset pipeline can be controlled to be in a cut-off state, so as to utilize the evaporator to cool the circulating gas and separate out the moisture in the circulating gas.

[0092] In an embodiment of the present application, in response to a preset clothes drying command, the drive motor is controlled to rotate at a preset speed and the compressor is turned on. A preset pipeline is then controlled to be in a flow state, allowing the evaporator and condenser to heat the circulating gas. A first real-time temperature of the circulating gas is obtained. A determination is made as to whether the first real-time temperature reaches or exceeds a preset first target temperature. If the first real-time temperature reaches or exceeds a preset second target temperature, the preset pipeline is controlled to be in a shut-off state, allowing the evaporator to cool the circulating gas. In this manner, the preset pipeline is first controlled to be in a flow state, allowing the evaporator and condenser to simultaneously heat the circulating gas, rapidly raising the circulating gas temperature. Then, if the first real-time temperature of the circulating gas reaches or exceeds the preset second target temperature, the preset pipeline is controlled to be in a shut-off state, allowing the evaporator to cool the circulating gas and extract moisture from the circulating gas. This increased temperature-raising efficiency of the circulating gas allows the dryer to quickly enter the moisture extraction phase, improving the dryer's drying efficiency.

[0093] Furthermore, the controller is configured to perform the following steps: obtaining a second real-time temperature of the circulating gas; determining whether the second real-time temperature is below a preset second target temperature; and if the second real-time temperature is below the preset second target temperature, resetting the on / off state of the preset pipeline to regulate the temperature of the circulating gas using the evaporator and condenser. In this way, the real-time temperature of the circulating gas can be used to control the dryer to alternate between the heating and condensing stages, allowing the circulating gas to maintain the highest possible temperature and rapidly precipitate moisture, thereby improving drying efficiency.

[0094] It should be noted that the second real-time temperature of the circulating gas is the real-time temperature detected by the temperature sensor after the preset pipeline is controlled to be in a cut-off state, that is, the real-time temperature detected by the temperature sensor after the valve is closed.

[0095] The preset second target temperature may be the same as the preset first target temperature, or may be different from the first target temperature.

[0096] Further, it is determined whether the second real-time temperature reaches below the preset second target temperature, that is, whether the second real-time temperature is lower than the preset second target temperature, or whether the second real-time temperature is lower than or equal to the preset second target temperature.

[0097] It should be noted that if the second real-time temperature reaches or exceeds the preset second target temperature, the preset pipeline is controlled to be maintained in a cut-off state.

[0098] The on-off state includes a flow state or a cut-off state.

[0099] It should be noted that re-adjusting the on-off state of the preset pipeline involves re-controlling the preset pipeline to a flowing state to heat the circulating gas using the evaporator and condenser; then re-obtaining the first real-time temperature of the circulating gas; and controlling the preset pipeline to a cut-off state when the first real-time temperature reaches or exceeds a preset second target temperature. Essentially, the on-off state of the preset pipeline is controlled based on the real-time temperature of the circulating gas, thereby controlling the drying process of the dryer to alternate between the heating phase and the condensing phase until the drying process is completed.

[0100] See also Figure 6 , Figure 6 This is a flowchart of steps after controlling a preset pipeline to be in a cut-off state provided by an exemplary embodiment of the present application. The controller is further configured to execute the following steps S610 to S640:

[0101] Step S610: obtaining a second real-time temperature of the circulating gas.

[0102] Step S620: Determine whether the second real-time temperature is below a preset second target temperature. If so, execute step S630; if not, execute step S640.

[0103] Step S630 , when the second real-time temperature reaches below the preset second target temperature, readjust the on-off state of the preset pipeline to adjust the temperature of the circulating gas using the evaporator and the condenser.

[0104] In step S640 , when the second real-time temperature reaches or exceeds the preset second target temperature, the preset pipeline is controlled to be maintained in a cut-off state.

[0105] In an embodiment of the present application, the on-off state of the preset pipeline can be adjusted by the second real-time temperature to control the dryer to alternately enter the heating stage and the condensation stage, so that the circulating gas can be kept at a high temperature as much as possible to quickly precipitate moisture, thereby improving the drying efficiency.

[0106] See also Figure 7 , Figure 7 A flowchart of steps that can be executed by a controller in a clothes dryer is provided in another exemplary embodiment of the present application. The controller can be configured to execute the following steps S710 to S780:

[0107] In step S710, in response to a preset clothes drying instruction, the driving motor is controlled to rotate at a preset speed and the compressor is turned on. Then, step S720 is executed.

[0108] In step S720, the preset pipeline is controlled to be in a flow state so as to heat the circulating gas by using the evaporator and the condenser. Then, step S730 is executed.

[0109] Step S730: Acquire the first real-time temperature of the circulating gas, and then execute step S740.

[0110] Step S740: Determine whether the first real-time temperature reaches or exceeds a preset first target temperature. If so, execute step S750; if not, return to step S720.

[0111] In step S750, the preset pipeline is controlled to be in a cut-off state so as to utilize the evaporator to cool the circulating gas. Then, step S760 is executed.

[0112] Step S760: Obtain the drying time of the clothes dryer. Then, execute step S770.

[0113] Step S770: Determine whether the drying time has reached or exceeded the preset target time. If so, proceed to step S780; if not, return to step S750.

[0114] Step S780: Turn off the drive motor and the compressor.

[0115] In an embodiment of the present application, in response to a preset clothes drying command, the preset pipeline is first controlled to be in a flow state, allowing the evaporator and condenser to simultaneously heat the circulating gas, thereby rapidly raising the temperature of the circulating gas. Then, when the first real-time temperature of the circulating gas reaches or exceeds a preset second target temperature, the preset pipeline is controlled to be in a cutoff state, allowing the evaporator to cool the circulating gas and extract moisture from the circulating gas. The drive motor and compressor are then shut down after the drying time has exceeded the preset target time. This increases the temperature rise efficiency of the circulating gas, allowing the dryer to quickly enter the stage of extracting moisture from the circulating gas, thereby improving the dryer's drying efficiency. Furthermore, by determining whether to shut down the drive motor and compressor based on the drying time, the drying process is determined based on the drying time, thereby improving the dryer's drying efficiency while ensuring a good drying effect.

[0116] Optionally, after controlling the preset pipeline to be in the cut-off state, the controller is further configured to: obtain the real-time humidity of the clothes to be dried; determine whether the real-time humidity has reached or fallen below a preset target humidity; and if the real-time humidity has reached or fallen below the target humidity, shut down the drive motor and compressor. In this way, whether to shut down the drive motor and compressor can be determined based on the real-time humidity of the clothes to be dried, thereby determining whether drying is complete based on the real-time humidity of the clothes to be dried, thereby ensuring the drying effect.

[0117] It should be noted that the real-time humidity of the clothes to be dried is obtained through a humidity sensor.

[0118] Furthermore, determining whether the real-time humidity reaches below a preset target humidity includes: determining whether the real-time humidity is greater than a preset target humidity, or determining whether the real-time humidity is greater than or equal to a preset target humidity.

[0119] If the drying time does not reach below the preset target humidity, the preset pipeline is controlled to remain in the cut-off state.

[0120] See also Figure 8 , Figure 8 A flowchart of steps that can be executed by a controller in a clothes dryer according to another exemplary embodiment of the present application is provided. The controller can be configured to execute the following steps S810 to S830:

[0121] In step S801, in response to a preset clothes drying instruction, the driving motor is controlled to rotate at a preset speed and the compressor is turned on. Then, step S802 is executed.

[0122] Step S802: Open the valve to heat the circulating gas using the evaporator and condenser. Then, execute step S803.

[0123] Step S803: Acquire the first real-time temperature of the circulating gas, and then execute step S804.

[0124] Step S804: Determine whether the first real-time temperature reaches or exceeds a preset first target temperature. If so, execute step S805; if not, return to step S802.

[0125] In step S805, the valve is closed to utilize the evaporator to cool the circulating gas, and then step S806 is executed.

[0126] Step S806: Acquire the real-time humidity of the clothes to be dried. Then, execute step S807.

[0127] Step S807: Determine whether the real-time humidity is below the preset target humidity. If so, execute step S810; if not, execute step S808.

[0128] Step S808: Acquire the second real-time temperature of the circulating gas, and then execute step S809.

[0129] Step S809: Determine whether the second real-time temperature is below the preset second target temperature. If so, execute step S802; if not, execute step S805.

[0130] Step S810: Turn off the drive motor and the compressor.

[0131] In an embodiment of the present application, in response to a preset clothes drying command, the preset pipeline is first controlled to flow, allowing the evaporator and condenser to simultaneously heat the circulating gas, rapidly raising the circulating gas temperature during the heating phase. Then, when the first real-time temperature of the circulating gas reaches or exceeds a preset second target temperature, the preset pipeline is controlled to shut off, allowing the evaporator to cool the circulating gas, extracting moisture from the circulating gas during the condensation phase. The real-time temperature of the circulating gas is then used to control the drying process of the dryer, alternating between the heating phase and the condensation phase until the real-time humidity of the clothes to be dried falls below the target humidity, at which point the drive motor and compressor are shut down. This allows the dryer to alternate between the rapid heating phase and the condensation phase based on the real-time temperature of the circulating gas, allowing the circulating gas to maintain the highest possible temperature for rapid moisture extraction, thereby improving drying efficiency. Furthermore, by determining whether to shut down the drive motor and compressor based on the real-time humidity of the clothes to be dried, the drying process is determined based on the real-time humidity of the clothes to be dried, thereby improving the drying efficiency of the dryer while ensuring a good drying effect.

[0132] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art that are not disclosed herein.

[0133] It should be understood that the above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. Ordinary technicians in this field can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection required by the claims.

Claims

1. A clothes dryer, characterized in that: include: Box; A drum is provided in the box; the drum is used to accommodate clothes to be dried; A compressor, used to perform work on the refrigerant; A condenser connected to the compressor; the condenser is used to heat the circulating gas using a refrigerant; an evaporator connected to the compressor and the condenser; the evaporator is used to heat or cool the circulating gas using a refrigerant; A preset pipeline for connecting the evaporator and the condenser; A capillary tube, connected in parallel with the preset pipeline, used to connect the evaporator and the condenser; a driving motor for providing rotational power to the drum; a temperature sensor for detecting the real-time temperature of the circulating gas in the clothes dryer; A controller is electrically connected to the drive motor, the temperature sensor, and the heat pump system, and is configured to perform the following steps: In response to a preset clothes drying instruction, controlling the driving motor to rotate at a preset speed and turning on the compressor; controlling the preset pipeline to be in a flow state so as to heat the circulating gas by using the evaporator and the condenser; obtaining a first real-time temperature of the circulating gas; Determining whether the first real-time temperature reaches or exceeds a preset first target temperature; When the first real-time temperature reaches or exceeds a preset second target temperature, the preset pipeline is controlled to be in a cut-off state so as to utilize the evaporator to cool the circulating gas.

2. The clothes dryer according to claim 1, characterized in that When the preset pipeline is in a flow state, the pressures of the condenser and the evaporator are equal.

3. The clothes dryer according to claim 1, wherein: When the preset pipeline is in a flow state, the refrigerant flows from the condenser to the evaporator through the preset pipeline and the capillary tube.

4. The clothes dryer according to claim 1, wherein: When the preset pipeline is in a cut-off state, the refrigerant flows from the condenser to the evaporator through the capillary tube.

5. The clothes dryer according to claim 1, wherein: When the preset pipeline is in a cut-off state, the pressure of the condenser reaches a pressure higher than the pressure of the evaporator. The clothes dryer according to claim 1, wherein: The clothes dryer further includes a valve; the valve is used to control the preset pipeline to be in a flow state; the controller is further configured to: Open the valve.

7. The clothes dryer according to claim 1, wherein: The clothes dryer further includes a valve; the valve is used to control the preset pipeline to be in a cut-off state; the controller is further configured to: Close the valve.

8. The clothes dryer according to any one of claims 1 to 7, characterized in that: The controller is further configured to: obtaining a second real-time temperature of the circulating gas; Determining whether the second real-time temperature reaches or falls below a preset second target temperature; When the second real-time temperature reaches below a preset second target temperature, the on-off state of the preset pipeline is readjusted to adjust the temperature of the circulating gas by using the evaporator and the condenser.

9. The clothes dryer according to any one of claims 1 to 7, characterized in that: The controller is further configured to: Obtaining the drying time of the clothes dryer; Determining whether the drying time reaches or exceeds a preset target time; When the drying time reaches or exceeds the target time, the driving motor and the compressor are turned off.

10. The clothes dryer according to any one of claims 1 to 7, characterized in that: The clothes dryer further includes a humidity sensor; the humidity sensor is used to detect the humidity of the clothes to be dried; and the controller is further configured to: Acquiring the real-time humidity of the clothes to be dried; Determining whether the real-time humidity reaches below a preset target humidity; When the real-time humidity reaches below the target humidity, the driving motor and the compressor are turned off.

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