Clothes drying equipment control method and clothes drying equipment

Abstract

The invention belongs to the technical field of clothes processing equipment, and discloses a control method of clothes drying equipment and the clothes drying equipment. The clothes drying equipment comprises a heating and dehumidifying system; the control method comprises the steps that in the initial drying stage of the clothes drying equipment, the heating dehumidification system operates in a heating mode for heating; and in the last drying stage of the clothes drying equipment, the heating and dehumidifying system operates in a refrigeration mode for refrigeration. According to the scheme provided by the invention, the heating and dehumidifying system is arranged in the clothes drying equipment, and the heating and dehumidifying system can start the heating mode for heating in the initial drying stage, so that the temperature in the clothes drying equipment can be quickly increased, the preheating time in the clothes drying equipment is shortened, the clothes drying efficiency is improved, and the drying duration is shortened. And the heating and dehumidifying system starts the refrigeration mode for refrigeration in the last drying stage, so that the interior of the clothes drying equipment is cooled and dehumidified, and the drying time is further shortened.

Description

Technical Field

[0001] The present invention belongs to the field of clothing processing equipment, and in particular, relates to a control method of a clothes drying equipment and the clothes drying equipment. Background Art

[0002] Among clothes dryers, the heat pump technology of heat pump dryers is the most effective way to save energy in the process of drying clothes, and the drying effect is better. Therefore, heat pump dryers have been widely used and have broad market prospects.

[0003] The drying process of the heat pump dryer is as follows: low-temperature heat energy in the air is absorbed by the refrigerant, and after being compressed and converted by the heat pump system including the compressor, high-temperature heat energy is generated. The operation of the heat pump system includes two stages, namely the preheating stage and the steady-state stage. The preheating stage is the initial stage after the compressor is started, in which a certain amount of time is required to reach the full working state in terms of temperature and pressure. When the heat pump system is started, the temperature of the air and the refrigerant is at the ambient temperature. In the preheating stage, the temperature of the air and the refrigerant is increased to the desired level. In the steady-state stage, the temperature of the air and the refrigerant remains static and constant.

[0004] At present, the compressors used in heat pump dryers are usually fixed-frequency compressors and variable-frequency compressors. The working principles of these two compressors determine that their preheating phase requires a long period of time, resulting in the preheating phase accounting for too large a proportion of the total drying time, which in turn leads to a long total drying time. In addition, after these two compressors have been in the steady-state phase for a long time, due to their energy consumption limitations and the temperature rise of the compressor's evaporator, the evaporator's cooling and dehumidification effect on the drying air is reduced, which in turn leads to a longer drying time for the heat pump dryer.

[0005] Therefore, how to shorten the drying time of the heat pump dryer is a technical problem that needs to be solved.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a control method for a clothes drying device and a clothes drying device which can shorten the drying time of the clothes drying device.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] In one aspect, a control method for a clothes drying device is provided.

[0010] Wherein, the clothes drying equipment includes a heating and dehumidification system;

[0011] The control method comprises:

[0012] In the initial drying stage of the clothes drying device, the heating and dehumidification system operates in a heating mode for heating;

[0013] In the final drying stage of the clothes drying device, the heating and dehumidification system operates in a cooling mode for cooling.

[0014] The solution provided by the present invention is that a heating and dehumidifying system is provided in the clothes drying device, and the heating and dehumidifying system can start the heating mode for heating in the initial drying stage, so as to quickly increase the temperature in the clothes drying device, reduce the preheating time in the clothes drying device, improve the drying efficiency of the clothes, and shorten the drying time. In addition, because the heating and dehumidifying system starts the cooling mode for cooling in the final drying stage, the clothes drying device is cooled and dehumidified, further shortening the drying time.

[0015] Further, the heating and dehumidification system is a semiconductor heating and dehumidification system;

[0016] The heating mode is that the semiconductor is energized in the forward direction to increase its surface temperature for heat dissipation;

[0017] The cooling mode is to reversely energize the semiconductor to lower its surface temperature for cooling.

[0018] Further, the clothes drying device includes a heat pump module;

[0019] After the clothes drying equipment is turned on and enters the initial drying stage, the heating and dehumidification system is controlled to start heating, and at the same time, the compressor of the heat pump module is controlled to start running;

[0020] Alternatively, when the clothes drying device is turned on and enters the initial drying stage, the heating and dehumidification system is first controlled to start heating, and after reaching a preset time or a preset heating temperature, the compressor of the heat pump module is controlled to start running.

[0021] Furthermore, in the initial drying stage, the temperature in the clothes drying device is detected in real time and compared with a first preset temperature;

[0022] When the temperature in the clothes drying equipment is greater than the first preset temperature, the clothes drying equipment is controlled to enter the intermediate drying stage, the compressor is controlled to keep running, and the semiconductor heating and dehumidification system is controlled to stop running.

[0023] Furthermore, when the temperature in the plurality of clothes drying devices is less than or equal to the first preset temperature, the clothes drying devices are controlled to continue to be maintained in the initial drying stage, and the heating and dehumidification systems are controlled to continue to operate in the heating mode for heating.

[0024] Furthermore, in the intermediate drying stage, it is detected that the internal temperature of the drying equipment reaches a preset shutdown temperature, and the compressor is controlled to stop running.

[0025] Furthermore, after the compressor stops running, the heating and dehumidification system is controlled to start the cooling mode for cooling.

[0026] Furthermore, in the intermediate drying stage, the temperature in the clothes drying device is detected in real time and compared with a second preset temperature;

[0027] Determine whether to enter the final drying stage based on the comparison results.

[0028] Further, the temperature in the plurality of clothes drying devices is less than or equal to the second preset temperature, and the clothes drying devices are controlled to continue to be maintained in the intermediate drying stage;

[0029] When the temperature in the clothes drying equipment is greater than the second preset temperature, the clothes drying equipment is controlled to enter the final drying stage, and the heating and dehumidification system is controlled to start the cooling mode for cooling.

[0030] On the other hand, a clothes drying device to which the control method of the clothes drying device is applied is also provided, wherein a heating and dehumidification system is installed in the clothes drying device.

[0031] The clothes drying device provided by the present invention shortens the drying time and improves the user experience because the above-mentioned clothes drying device control method is adopted.

[0032] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0033] 1. The solution provided by the present invention is that a heating and dehumidifying system is provided in the clothes drying device. The heating and dehumidifying system can start the heating mode for heating in the initial drying stage, thereby quickly raising the temperature in the clothes drying device, reducing the preheating time in the clothes drying device, improving the drying efficiency of the clothes, and shortening the drying time. In addition, since the heating and dehumidifying system starts the cooling mode for cooling in the final drying stage, the clothes drying device is cooled and dehumidified, further shortening the drying time.

[0034] 2. The heating and dehumidification system provided by the present invention is a semiconductor heating and dehumidification system, which can switch between the cooling mode and the heating mode by changing the direction of the current, thereby providing different modes in different stages of drying, shortening the drying time and improving the user experience.

[0035] 3. The solution provided by the present invention is that if the temperature inside the drying equipment is too high during the intermediate drying stage and the compressor exceeds the preset shutdown temperature and stops working, the heating and dehumidification system is controlled to start the cooling mode for cooling, so as to ensure that the entire system still has the dehumidification capacity when the compressor stops, thereby shortening the drying time.

[0036] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0038] Figure 1 is a flow chart of a control method for a clothes dryer of the present invention;

[0039] Figure 2 is a flow chart of a control method of a clothes dryer using a fixed-frequency compressor according to an embodiment of the present invention;

[0040] Figure 3 It is a flowchart diagram of a control method for a clothes dryer using a variable frequency compressor in Embodiment 3 of the present invention.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] like Figures 1 to 3 As shown, the present invention provides a control method for a clothes drying device and a clothes drying device.

[0046] Wherein, the clothes drying equipment includes a heating and dehumidification system;

[0047] The control method comprises:

[0048] In the initial drying stage of the clothes drying device, the heating and dehumidification system operates in a heating mode for heating;

[0049] In the final drying stage of the clothes drying device, the heating and dehumidification system operates in a cooling mode for cooling.

[0050] The solution provided by the present invention is that the heating and dehumidification system can start the heating mode for heating in the initial drying stage, so as to quickly increase the temperature in the clothes drying device and reduce the preheating time in the clothes drying device. It is also possible to start the cooling mode for cooling in the final drying stage, so as to cool down and dehumidify the clothes drying device. This solution shortens the drying time.

[0051] A clothes drying device using the control method of the clothes drying device is also provided, wherein a heating and dehumidification system is installed in the clothes drying device.

[0052] The clothes drying device provided by the present invention shortens the drying time and improves the user experience because the above-mentioned clothes drying device control method is adopted.

[0053] Embodiment 1

[0054] like Figure 1 As shown, this embodiment provides a control method for a clothes drying device.

[0055] Wherein, the clothes drying equipment includes a heating and dehumidification system;

[0056] The control method comprises:

[0057] In the initial drying stage of the clothes drying device, the heating and dehumidification system operates in a heating mode for heating;

[0058] In the final drying stage of the clothes drying device, the heating and dehumidification system operates in a cooling mode for cooling.

[0059] In this embodiment, the clothes drying device is a clothes dryer. The clothes dryer used in the control method of the clothes dryer is a heat pump clothes dryer, which generally includes a driving mechanism, an inner drum, a fan and a heat pump circulation system. The heat pump circulation system includes an air duct and a heat pump module, and the heat pump module includes at least a condenser, an evaporator and a compressor. Among them, the compressor adopts a fixed-frequency compressor. The heat pump circulation system can heat, dry and condense the airflow. When the heat pump clothes dryer is working, the driving mechanism drives the inner drum to rotate, the condenser heats the gas, and the fan rotates to make the high-temperature dry gas flow out of the condenser into the inner drum. The high-temperature dry gas takes away moisture from the clothes in the inner drum and becomes wet gas. The wet gas is sent to the evaporator for condensation and dehumidification under the action of the fan. The dehumidified gas is heated again by the condenser and continues to be sent to the inner drum. The heat pump clothes dryer continuously cycles this step until the clothes are dried.

[0060] Of course, the clothes drying equipment can also be a washer-dryer.

[0061] The heat pump dryer in this solution also includes a heating and dehumidification system, which is arranged between the compressor and the condenser. The heating and dehumidification system has two modes, one is a heating mode and the other is a cooling mode. The control method is specifically that when the dryer is turned on and enters the initial drying stage, the temperature in the dryer barrel is low in this stage, and the heating and dehumidification system turns on the heating mode for heating, so that the temperature in the dryer barrel rises rapidly, thereby improving the drying efficiency of the clothes. When the dryer enters the final drying stage, that is, the drying is about to end, the temperature in the dryer barrel is high and the humidity is high, and the dryer barrel needs to be cooled and dehumidified. At this time, the heating and dehumidification system is controlled to turn on the cooling mode to reduce the temperature in the dryer barrel, assist the evaporator in cooling and dehumidifying, increase the drying efficiency of the clothes, and shorten the drying time.

[0062] The solution of this embodiment also includes: the heating and dehumidification system is a semiconductor heating and dehumidification system;

[0063] The heating mode is that the semiconductor is energized in the forward direction to increase its surface temperature for heat dissipation;

[0064] The cooling mode is to reversely energize the semiconductor to lower its surface temperature for cooling.

[0065] In the solution provided in this embodiment, the heating and dehumidification system is a semiconductor heating and dehumidification system. The semiconductor heating and dehumidification system is partially arranged in the air duct, and the part arranged in the air duct can turn on the heating mode to heat the dryer barrel, and can also turn on the cooling mode to cool the dryer barrel. When the semiconductor is energized in the forward direction, the heating and dehumidification system turns on the heating mode. When the semiconductor is energized in the reverse direction, the heating and dehumidification system turns on the cooling mode. The two different modes only need to change the direction of the current supplied by the semiconductor, so that a structure provides different modes in different stages of drying, which not only shortens the drying time, but also has a simple structure, saves costs, and improves the user experience.

[0066] In detail, the semiconductor heating and dehumidification system utilizes the Peltier effect. In a forward current, the heat exchange end generates heat to generate heat, and in a reverse current, the heat exchange end absorbs heat to generate cooling. The Peltier effect is specifically: since the charge carriers are at different energy levels in different materials, when it moves from a high energy level to a low energy level, it releases excess energy; conversely, when it moves from a low energy level to a high energy level, it absorbs energy from the outside. In a specific embodiment, the switching between the heating and cooling working modes of the heat exchange end is achieved by interchangeably connecting the positive current and the negative current of the semiconductor heating and dehumidification system.

[0067] In one solution of this embodiment: the clothes drying device includes a heat pump module;

[0068] When the clothes drying equipment is turned on and enters the initial drying stage, the heating and dehumidification system is first controlled to start heating. After reaching the preset time or the preset heating temperature, the compressor of the heat pump module is controlled to start running.

[0069] In the above scheme, when the dryer is turned on, it enters the initial drying stage. At this time, the semiconductor heating and dehumidification system is controlled to start running first, and when the time reaches the preset running time, the compressor is controlled to start running. Alternatively, when the dryer is turned on, it enters the initial drying stage. At this time, the semiconductor heating and dehumidification system is controlled to start running first, and the temperature in the dryer is detected in real time. When the temperature reaches the preset heating temperature, the compressor is controlled to start running. When in use, the semiconductor heating and dehumidification system is generally controlled to run for 3 minutes first, and then the compressor is controlled to start running.

[0070] In the solution of this embodiment, detecting the temperature in the dryer refers to detecting the temperature in the dryer drum or the temperature at the exhaust pipe of the compressor.

[0071] In another solution of this embodiment, after the clothes drying device is turned on and enters the initial drying stage, the heating and dehumidification system is controlled to start heating, and at the same time, the compressor of the heat pump module is controlled to start running.

[0072] In the above scheme, when the dryer is turned on and enters the initial drying stage, the compressor is controlled to start running and the semiconductor heating and dehumidification system also starts running.

[0073] It is worth noting that in the above scheme, when the clothes dryer is turned on and enters the initial drying stage, a higher shutdown temperature is set for the compressor. In the scheme provided in this embodiment, the higher shutdown temperature refers to the first preset shutdown temperature. That is to say, when the compressor starts to run, the temperature inside the clothes dryer or the temperature at the exhaust pipe position is detected in real time, and the detected temperature is compared with the first preset shutdown temperature. If the temperature reaches the first preset shutdown temperature, the compressor is controlled to stop running. If the temperature does not reach the first preset shutdown temperature, the compressor is controlled to continue running.

[0074] The solution of this embodiment further includes: in the initial drying stage, detecting the temperature in the clothes drying device in real time and comparing it with a first preset temperature;

[0075] When the temperature in the clothes drying equipment is greater than the first preset temperature, the clothes drying equipment is controlled to enter the intermediate drying stage, the compressor is controlled to keep running, and the semiconductor heating and dehumidification system is controlled to stop running.

[0076] When the temperature in the clothes drying equipment is less than or equal to the first preset temperature, the clothes drying equipment is controlled to continue to maintain the initial drying stage, and the heating and dehumidification system is controlled to continue to operate in the heating mode for heating.

[0077] In the intermediate drying stage, the temperature in the clothes drying device is detected in real time and compared with a second preset temperature;

[0078] Determine whether to enter the final drying stage based on the comparison results.

[0079] When the temperature in the clothes drying equipment is less than or equal to the second preset temperature, the clothes drying equipment is controlled to continue to be in the intermediate drying stage;

[0080] When the temperature in the clothes drying equipment is greater than the second preset temperature, the clothes drying equipment is controlled to enter the final drying stage, and the heating and dehumidification system is controlled to start the cooling mode for cooling.

[0081] The following is a detailed description of the above scheme:

[0082] In the control method of the clothes dryer provided in this embodiment, the drying process of the clothes dryer is divided into three stages, namely, the initial drying stage, the intermediate drying stage and the final drying stage. Different stages correspond to different temperature ranges. The temperature range corresponding to the initial drying stage is lower than the first preset temperature, the temperature range of the intermediate drying stage is greater than the first preset temperature and less than the second preset temperature, and the temperature range corresponding to the final drying stage is greater than the second preset temperature.

[0083] like Figure 2 As shown, when the dryer enters the initial drying stage, the temperature in the dryer barrel is detected in real time, and the detected temperature is compared with the first preset temperature. If the detected temperature is less than or equal to the first preset temperature, it means that the current temperature in the dryer barrel is low and needs to be heated. In other words, the compressor and the semiconductor heating and dehumidification system continue to be controlled to continue heating, and the compressor continues to be in working condition. If the detected temperature is greater than the first preset temperature, it means that the temperature in the dryer barrel has increased, and the dryer is controlled to enter the intermediate drying stage. In the intermediate drying stage, the compressor is controlled to run, and the semiconductor heating and dehumidification system stops running.

[0084] In the above scheme, when the clothes dryer is in the initial drying stage, if the temperature in the clothes dryer drum or the temperature at the compressor exhaust pipe position is higher than the first preset shutdown temperature, the compressor is controlled to stop running, and the semiconductor heating and dehumidification system is controlled to start the heating mode. Continue to detect the temperature in the clothes dryer drum or the temperature at the compressor exhaust pipe position. If the detected temperature is higher than the first preset temperature, the semiconductor heating and dehumidification system is controlled to start the heating mode and stop running. At this time, it enters the intermediate drying stage.

[0085] In the intermediate drying stage, the compressor is controlled to start running again, and a medium shutdown temperature is set for the compressor. That is, the medium shutdown temperature in the intermediate drying stage refers to the second preset shutdown temperature. The temperature inside the dryer or the temperature at the exhaust pipe position is detected in real time, and the detected temperature is compared with the second preset shutdown temperature. If the temperature reaches the second preset shutdown temperature, the compressor is controlled to stop running. If the temperature does not reach the second preset shutdown temperature, the compressor is controlled to continue running.

[0086] In the intermediate drying stage, the temperature inside the dryer or the temperature at the exhaust pipe position is continuously detected in real time and compared with the second preset temperature. If the temperature is less than or equal to the second preset temperature, the dryer is controlled to continue to maintain the intermediate drying stage, that is, the semiconductor heating and dehumidification system stops running and the compressor continues to run. If the temperature is greater than the second preset temperature, the dryer is controlled to enter the final drying stage.

[0087] In the final drying stage, the compressor is controlled to start running again, and a low shutdown temperature is set for the compressor. That is, the low shutdown temperature in the final drying stage refers to the third preset shutdown temperature. The temperature in the dryer or the temperature at the exhaust pipe is detected in real time, and the detected temperature is compared with the third preset shutdown temperature. If the temperature reaches the third preset shutdown temperature, the compressor is controlled to stop running. If the temperature does not reach the third preset shutdown temperature, the compressor is controlled to continue running.

[0088] In the final drying stage, the compressor and semiconductor heating and dehumidification system are controlled to operate. In this stage, the current direction is changed to enable the semiconductor heating and dehumidification system to start the cooling mode for cooling. This lowers the temperature in the dryer drum, assists the evaporator in cooling and dehumidifying, increases the drying efficiency of the clothes, and shortens the drying time.

[0089] The solution of this embodiment also includes: when the clothes drying device enters the final drying stage, detecting the moisture content of the clothes to be dried and comparing it with a preset moisture content;

[0090] Determine whether to end the drying process based on the comparison result.

[0091] If the moisture content of the clothes to be dried is greater than the preset moisture content, the clothes drying device is controlled to continue to be maintained in the final drying stage;

[0092] If the moisture content of the clothes to be dried is less than or equal to the preset moisture content, the drying process ends.

[0093] When the clothes dryer enters the final drying stage, the temperature in the dryer drum is no longer detected, but the moisture content of the clothes to be dried is detected. If the moisture content reaches the preset condition, it proves that the clothes are dried and the drying is finished. If the moisture content does not reach the preset condition, it proves that the clothes are not dried and the drying continues. In the scheme of this embodiment, the preset condition is that the humidity of the clothes is ±3%.

[0094] Regarding the above solution, it is worth noting that during the operation of the dryer, no matter in which drying stage, if the detected temperature reaches the preset shutdown temperature of the drying stage, the compressor is controlled to stop running.

[0095] Regardless of which drying stage, if the detected temperature reaches the preset temperature of the corresponding stage, the dryer is controlled to enter the corresponding stage. At this time, if the compressor is in the off state, the compressor is controlled to start and run. If the compressor is in the running state, the compressor is controlled to continue to run. For example, if in the initial drying stage, the detected temperature is higher than the first preset temperature, at this time, regardless of whether the temperature in the dryer barrel or the temperature at the compressor exhaust pipe position reaches the first preset shutdown temperature, the dryer is controlled to enter the intermediate drying stage. And continue to detect the temperature in the dryer barrel or the temperature at the compressor exhaust pipe position and compare it with the second preset shutdown temperature. When the second preset shutdown temperature is reached, the compressor is controlled to shut down; if the second preset shutdown temperature is not reached, the compressor is controlled to continue to run. Similarly, in the intermediate drying stage, as long as the temperature in the dryer barrel or the temperature at the compressor exhaust pipe position is detected to be higher than the second preset temperature, the dryer is controlled to enter the final drying stage.

[0096] The solution of this embodiment also includes:

[0097] The material information of the clothes to be dried is detected, and the values ​​of the first preset temperature and the second preset temperature are determined according to the material information of the clothes to be dried.

[0098] Since clothes are made of different materials, the maximum temperatures they can withstand are also different. For example, some clothes are not resistant to high temperatures. If a higher drying temperature is set, the clothes will be damaged. Therefore, before executing the drying program, the material information of the clothes is first detected, and different drying temperature values ​​are set according to different materials. For example, for clothes made of chemical fiber material, a first preset temperature T1 and a second preset temperature T2 are set; for clothes made of cashmere material, a first preset temperature T11 and a second preset temperature T21 are set; for clothes made of cotton material, a first preset temperature T12 and a second preset temperature T22 are set.

[0099] In another solution of this embodiment, the compressor is controlled to operate at one frequency throughout the drying process, and the heating and dehumidification system changes different operating states according to different drying stages.

[0100] In the solution provided in this embodiment, since a heating and dehumidification system is provided in the clothes drying device, one system can provide different modes, thereby saving costs. In addition, the heating and dehumidification system turns on the heating mode for heating in the initial drying stage and turns on the cooling mode for cooling in the final drying stage, thereby shortening the drying time and improving the user experience.

[0101] Embodiment 2

[0102] This embodiment provides a control method for a clothes drying device.

[0103] The difference between this embodiment and the first embodiment is that during the intermediate drying stage, the semiconductor heating and dehumidification system starts to operate in cooling mode.

[0104] Specifically, in the intermediate drying stage, the temperature inside the drying equipment is detected, and if the temperature reaches a preset shutdown temperature, the compressor is controlled to stop running.

[0105] After the compressor stops running, the heating and dehumidification system is controlled to start the cooling mode for cooling.

[0106] In the intermediate drying stage, the temperature inside the clothes drying device or the temperature at the exhaust pipe position shall continue to be detected in real time, and compared with the second preset shutdown temperature. If the temperature is less than or equal to the second preset shutdown temperature, the compressor is controlled to stop running. The detected temperature is continued to be compared with the second preset temperature. If it is less than or equal to the second preset temperature, the clothes drying device is controlled to continue to maintain the intermediate drying stage, that is, the compressor stops running, and the semiconductor heating and dehumidification system is switched from the heating mode to the cooling mode for cooling. The temperature inside the clothes drying device continues to be detected in real time, and compared with the second preset temperature. If the temperature is greater than the second preset temperature, the clothes drying device is controlled to enter the final drying stage. In the final drying stage, the compressor is controlled to restart, and the semiconductor heating system continues to maintain the cooling mode for cooling.

[0107] The solution provided in this embodiment is that if the temperature inside the drying equipment is too high during the intermediate drying stage, causing the compressor to exceed the preset shutdown temperature and stop working, the heating and dehumidification system is controlled to start the cooling mode for cooling, so as to ensure that the entire system still has the dehumidification capacity when the compressor stops, thereby shortening the drying time.

[0108] Embodiment 3

[0109] This embodiment provides a control method for a clothes drying device.

[0110] The solution provided in this embodiment is different from the above embodiment in that the compressor is a variable frequency compressor. In different drying stages, the operating frequency of the compressor is different.

[0111] like Figure 3 As shown, in the initial drying stage, the compressor is controlled to operate at the first preset frequency. When the dryer enters the intermediate drying stage, the compressor is controlled to operate at a lower frequency from the first preset frequency to the second preset frequency. When the dryer enters the final drying stage, the compressor is controlled to operate at a lower frequency from the second preset frequency to the third preset frequency.

[0112] In the solution provided in this embodiment, as the drying program runs, the temperature inside the clothes dryer gradually increases, and when entering the intermediate drying stage and the final drying stage, the temperature inside the clothes dryer does not need to be very high, and the excessively high temperature at this time affects the condensation efficiency. Therefore, as the drying program runs, the operating frequency of the compressor is gradually reduced.

[0113] Embodiment 4

[0114] This embodiment provides a clothes drying device.

[0115] The clothes drying device provided in this embodiment is a heat pump clothes dryer having a heating and dehumidification system.

[0116] The clothes drying device provided in this embodiment applies the control method of the clothes drying device described in the above embodiments 1 to 3.

[0117] The clothes drying device provided in this embodiment adopts the above-mentioned control method for clothes drying device, thereby shortening the drying time and improving the user experience.

[0118] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A method for controlling a clothes drying device, characterized in that: The clothes drying device includes a heating and dehumidification system; The control method comprises: In the initial drying stage of the clothes drying device, the heating and dehumidification system operates in a heating mode for heating; In the final drying stage of the clothes drying device, the heating and dehumidification system operates in a cooling mode for cooling.

2. The control method of the clothes drying device according to claim 1, characterized in that: The heating and dehumidification system is a semiconductor heating and dehumidification system; The heating mode is that the semiconductor is energized in the forward direction to increase its surface temperature for heat dissipation; The cooling mode is to reversely energize the semiconductor to lower its surface temperature for cooling.

3. The control method of the clothes drying device according to claim 1 or 2, characterized in that: The clothes drying device comprises a heat pump module; After the clothes drying equipment is turned on and enters the initial drying stage, the heating and dehumidification system is controlled to start heating, and the compressor of the heat pump module is controlled to start running; Alternatively, when the clothes drying device is turned on and enters the initial drying stage, the heating and dehumidification system is first controlled to start heating, and after reaching a preset time or a preset heating temperature, the compressor of the heat pump module is controlled to start running.

4. The control method of the clothes drying device according to claim 3, characterized in that: In the initial drying stage, the temperature in the clothes drying device is detected in real time and compared with a first preset temperature; When the temperature in the clothes drying equipment is greater than the first preset temperature, the clothes drying equipment is controlled to enter the intermediate drying stage, the compressor is controlled to keep running, and the semiconductor heating and dehumidification system is controlled to stop running.

5. The control method of the clothes drying device according to claim 4, characterized in that: When the temperature in the clothes drying equipment is less than or equal to the first preset temperature, the clothes drying equipment is controlled to continue to maintain the initial drying stage, and the heating and dehumidification system is controlled to continue to operate in the heating mode for heating.

6. The control method of the clothes drying device according to claim 5, characterized in that: During the intermediate drying stage, the temperature inside the drying equipment is detected to have reached the preset shutdown temperature, and the compressor is controlled to stop running.

7. The control method of the clothes drying device according to claim 6, characterized in that: After the compressor stops running, the heating and dehumidification system is controlled to start the cooling mode for cooling.

8. The control method of the clothes drying device according to claim 4, characterized in that: In the intermediate drying stage, the temperature in the clothes drying device is detected in real time and compared with a second preset temperature; Determine whether to enter the final drying stage based on the comparison results.

9. The control method of the clothes drying device according to claim 8, characterized in that: When the temperature in the plurality of clothes drying devices is less than or equal to the second preset temperature, the clothes drying devices are controlled to continue to be maintained in the intermediate drying stage; When the temperature in the clothes drying equipment is greater than the second preset temperature, the clothes drying equipment is controlled to enter the final drying stage, and the heating and dehumidification system is controlled to start the cooling mode for cooling.

10. A clothes drying device using the clothes drying device control method according to any one of claims 1 to 9, characterized in that: A heating and dehumidification system is installed in the clothes drying equipment.

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