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 heat pump module and a heating and dehumidifying system; the control method comprises the steps that in the initial drying stage of a drying program, the heating dehumidification system is controlled to start a heating mode for heating, and a compressor of the heat pump module is controlled to start and operate at a first preset frequency. According to the scheme, the heat pump module and the heating and dehumidifying system are arranged in the clothes drying equipment, when the drying program enters the initial drying stage, the heating and dehumidifying system is controlled to start the heating mode for heating, and the compressor of the heat pump is controlled to operate at the first preset frequency; therefore, the temperature in the clothes drying equipment can be rapidly increased, the preheating time in the clothes drying equipment is shortened, the clothes drying efficiency is improved, and the drying duration is 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 heat pump module and a heating and dehumidification system;

[0011] The control method comprises:

[0012] In the initial drying stage of the drying program, the heating and dehumidification system is controlled to start the heating mode for heating, and the compressor of the heat pump module is controlled to start and run at a first preset frequency.

[0013] The solution provided by the present invention has a heat pump module and a heating and dehumidification system in the clothes drying device. When the drying program enters the initial drying stage, not only the heating and dehumidification system is controlled to start the heating mode for heating, but also the compressor of the heat pump is controlled to operate at a higher frequency, so that the temperature in the clothes drying device can be quickly increased, the preheating time in the clothes drying device can be reduced, the drying efficiency of the clothes is improved, and the drying time is shortened.

[0014] Further, the temperature in the clothes drying device is detected in real time and compared with a first preset temperature;

[0015] 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 heating and dehumidification system is controlled to stop running, and the compressor is controlled to reduce the operation frequency from the first preset frequency to the second preset frequency.

[0016] Furthermore, when the temperature in the plurality of clothes drying devices is less than or equal to a first preset temperature, the clothes drying device is controlled to continue to be maintained in the initial drying stage, the heating and dehumidification system is controlled to maintain a heating mode, and the compressor maintains a first preset frequency and continues to operate.

[0017] Further, continue to detect the temperature in the clothes drying device in real time, and compare it with a second preset temperature;

[0018] 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, the heating and dehumidification system is controlled to start the cooling mode for cooling, and the compressor is controlled to reduce the second preset frequency to the third preset frequency.

[0019] Further, the heating and dehumidification system is a semiconductor heating and dehumidification system;

[0020] The heating mode is that the semiconductor is energized in the forward direction to increase its surface temperature for heat dissipation;

[0021] The cooling mode is to reversely energize the semiconductor to lower its surface temperature for cooling.

[0022] Furthermore, 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.

[0023] Furthermore, material information of the clothes to be dried is detected, and the respective values ​​of the first preset temperature and the second preset temperature are determined according to the material information of the clothes to be dried.

[0024] Furthermore, in the final drying stage, the moisture content of the clothes to be dried is detected and compared with a preset moisture content;

[0025] Determine whether to end the drying process based on the comparison result.

[0026] Furthermore, if the moisture content of the clothes to be dried is greater than a preset moisture content, the heating and dehumidification system is controlled to continue to operate in a cooling mode for cooling, and the compressor operates at a third preset frequency;

[0027] If the moisture content of the clothes to be dried is less than or equal to the preset moisture content, the drying process ends.

[0028] 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.

[0029] 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.

[0030] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0031] 1. In the solution provided by the present invention, since a heat pump module and a heating and dehumidification system are arranged in the clothes drying device, when the drying program enters the initial drying stage, not only the heating and dehumidification system is controlled to start the heating mode for heating, but also the compressor of the heat pump is controlled to operate at a higher frequency, so that the temperature in the clothes drying device can be quickly increased, the preheating time in the clothes drying device can be reduced, the drying efficiency of the clothes can be improved, and the drying time can be shortened.

[0032] 2. The solution provided by the present invention can not only meet the drying requirements of each stage, but also save resources, because the compressor can operate at different frequencies in different drying stages.

[0033] 3. The solution provided by the present invention has not only a heating mode but also a cooling mode because the heating and dehumidification system has a heating mode. Therefore, the heating mode can be turned on for heat dissipation in the initial drying stage, and the cooling mode can be turned on for cooling in the final drying stage. This can increase the drying efficiency in each stage, shorten the overall drying time, and improve the user experience.

[0034] 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

[0035] 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:

[0036] Figure 1 is a flow chart of an implementation method of a clothes dryer control method of the present invention;

[0037] Figure 2 It is a flowchart schematic diagram of another implementation method of the dryer control method of the present invention.

[0038] 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

[0039] 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.

[0040] 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.

[0041] 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.

[0042] like Figure 1 to Figure 2 As shown, the present invention provides a control method for a clothes drying device and a clothes drying device.

[0043] Wherein, the clothes drying equipment includes a heat pump module and a heating and dehumidification system;

[0044] The control method comprises:

[0045] In the initial drying stage of the drying program, the heating and dehumidification system is controlled to start the heating mode for heating, and the compressor of the heat pump module is controlled to start and run at a first preset frequency.

[0046] The solution provided by the present invention can rapidly increase the temperature in the clothes drying device in the initial stage, thereby reducing the preheating time in the clothes drying device, improving the drying efficiency of the clothes, and shortening the drying time.

[0047] 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.

[0048] 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.

[0049] Embodiment 1

[0050] like Figure 1 As shown, this embodiment provides a control method for a clothes drying device.

[0051] The clothes drying device includes a heat pump module and a heating and dehumidification system;

[0052] The control method comprises:

[0053] In the initial drying stage of the drying program, the heating and dehumidification system is controlled to start the heating mode for heating, and the compressor of the heat pump module is controlled to start and run at a first preset frequency.

[0054] The drying equipment includes a dryer and a washer-dryer. The drying equipment used in the control method of the drying equipment described in this embodiment is a heat pump 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 variable frequency compressor. The heat pump circulation system can heat, dry and condense the airflow. When the heat pump 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 under the action of the fan for condensation and dehumidification. The dehumidified gas is heated again by the condenser and continues to be sent to the inner drum. The heat pump dryer continuously cycles this step until the clothes are dried.

[0055] 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 is partially arranged in the air duct, and the part arranged in the air duct has a heating mode. The control method is specifically that when the dryer is turned on and enters the initial drying stage, the temperature in the dryer drum is low in this stage, the heating and dehumidification system turns on the heating mode for heating, and controls the compressor to operate at a first preset frequency. The heating and dehumidification system and the compressor work together to quickly increase the temperature in the dryer drum and improve the drying efficiency of the clothes.

[0056] The solution of this embodiment also includes: when the drying equipment 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 at a first preset frequency.

[0057] 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 first controlled to start running, 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 first controlled to start running, 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 at the first preset frequency.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] The solution of this embodiment also includes: detecting the temperature in the clothes drying device in real time and comparing it with the first preset temperature;

[0062] 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 heating and dehumidification system is controlled to stop running, and the compressor is controlled to reduce the operation frequency from the first preset frequency to the second preset frequency.

[0063] 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, the heating and dehumidification system is controlled to maintain the heating mode, and the compressor maintains the first preset frequency and continues to run.

[0064] Continue to detect the temperature in the clothes drying device in real time, and compare it with a second preset temperature;

[0065] 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, the heating and dehumidification system is controlled to start the cooling mode for cooling, and the compressor is controlled to reduce the second preset frequency to the third preset frequency.

[0066] 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.

[0067] The heating and dehumidification system is a semiconductor heating and dehumidification system;

[0068] The heating mode is that the semiconductor is energized in the forward direction to increase its surface temperature for heat dissipation;

[0069] The cooling mode is to reversely energize the semiconductor to lower its surface temperature for cooling.

[0070] Next, the solution of this embodiment is described in detail:

[0071] In the control method of the clothes drying device provided in this embodiment, the drying program of the clothes drying device 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.

[0072] Since the compressor is a variable frequency compressor, it has different operating frequencies in different drying stages. As the drying progresses, the operating frequency of the compressor gradually decreases. In the scheme of this embodiment, the compressor is set with three operating frequencies from high to low, namely, a first preset frequency, a second preset frequency, and a third preset frequency. And the three preset frequencies are set corresponding to the three operating stages respectively.

[0073] Specifically, when the clothes dryer is turned on and enters the initial drying stage, the temperature inside the clothes 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 temperature inside the clothes dryer barrel is currently low and needs to continue to be heated. In other words, the compressor continues to be controlled to operate at the first preset frequency, and the semiconductor heating and dehumidification system continues to heat. If the detected temperature is greater than the first preset temperature, it means that the temperature inside the clothes dryer barrel has increased, and the clothes dryer is controlled to enter the intermediate drying stage. In the intermediate drying stage, the compressor is controlled to reduce its operation from the first preset frequency to the second preset frequency, and the semiconductor heating and dehumidification system stops operating.

[0074] 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 temperature. If the temperature 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 is operated from the first preset frequency to the second preset frequency, and the semiconductor heating and dehumidification system stops operating. If the temperature is greater than the second preset temperature, the clothes drying device is controlled to enter the final drying stage.

[0075] The heating and dehumidification system provided in this embodiment is a semiconductor heating and dehumidification system, which has two modes, namely, heating mode and cooling mode. The switching between the two different modes is achieved by changing the direction of the current. When the heating mode is started, the semiconductor is controlled to be energized in the forward direction to increase its surface temperature for heat dissipation. When the cooling mode is turned on, the direction of the current is changed, and the semiconductor is energized in the reverse direction to reduce its surface temperature for cooling.

[0076] 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.

[0077] In the final drying stage, not only is the compressor controlled to operate at a frequency lowered from the second preset frequency to the third preset frequency, but the semiconductor heating and dehumidification system is also turned on to operate in cooling mode.

[0078] In the above scheme, when the clothes 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 start 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.

[0079] The solution of this embodiment also includes: when the clothes dryer enters the final drying stage, detecting the moisture content of the clothes to be dried and comparing it with a preset moisture content;

[0080] Determine whether to end the drying process based on the comparison result.

[0081] If the moisture content of the clothes to be dried is greater than the preset moisture content, the clothes dryer is controlled to continue to maintain the final drying stage;

[0082] If the moisture content of the clothes to be dried is less than or equal to the preset moisture content, the drying process ends.

[0083] When the clothes dryer enters the final drying stage, the temperature in the clothes 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%.

[0084] The solution of this embodiment also includes:

[0085] 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.

[0086] 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.

[0087] like Figure 2 As shown, 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.

[0088] This solution can set different drying temperatures according to different clothing material information, thus protecting the clothes from damage.

[0089] 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.

[0090] Embodiment 2

[0091] This embodiment provides a control method for a clothes drying device.

[0092] The present embodiment is different from the above-mentioned embodiment in that the compressor is a fixed-frequency compressor, and corresponding shutdown temperatures are set in different drying stages.

[0093] In the solution provided in this embodiment, when the clothes dryer is turned on and enters the initial drying stage, the compressor and the heating and dehumidification system are controlled to start running. At this time, a higher shutdown temperature is set for the compressor. In the solution 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.

[0094] Specifically, when the clothes dryer enters the initial drying stage, the temperature in the dryer drum 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 temperature in the current dryer drum is low and needs to be heated. If the detected temperature is greater than the first preset temperature, it means that the temperature in the dryer drum has increased, and the clothes 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In the solution provided in this embodiment, although the compressor is a fixed-frequency compressor, a shutdown temperature is set for the compressor, and whether the compressor is running can be adjusted according to the temperature conditions in the dryer drum. On the basis of meeting the drying conditions, resources can also be saved.

[0102] Embodiment 3

[0103] This embodiment provides a control method for a clothes drying device.

[0104] The difference between this embodiment and the second embodiment is that during the intermediate drying stage, the semiconductor heating and dehumidification system starts to operate in cooling mode.

[0105] Specifically, in the intermediate drying stage, the temperature inside the dryer is detected, and if the temperature reaches a preset shutdown temperature, the compressor is controlled to stop running.

[0106] After the compressor stops running, the heating and dehumidification system is controlled to start the cooling mode for cooling.

[0107] In the intermediate drying stage, the temperature inside the dryer 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 dryer 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 dryer is continued to be detected in real time, and compared with the second preset temperature. If the temperature is greater than the second preset temperature, the dryer 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.

[0108] The solution provided in this embodiment is that if the temperature inside the dryer 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.

[0109] Embodiment 4

[0110] This embodiment provides a clothes drying device.

[0111] The clothes drying device provided in this embodiment is a heat pump clothes dryer having a heating and dehumidification system.

[0112] 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.

[0113] 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.

[0114] 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 heat pump module and a heating and dehumidification system; The control method comprises: In the initial drying stage of the drying program, the heating and dehumidification system is controlled to start the heating mode for heating, and the compressor of the heat pump module is controlled to start and run at a first preset frequency.

2. The control method of the clothes drying device according to claim 1, characterized in that: Detecting the temperature in the clothes drying device in real time and comparing it 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 heating and dehumidification system is controlled to stop running, and the compressor is controlled to reduce the operation frequency from the first preset frequency to the second preset frequency.

3. The control method of the clothes drying device according to claim 2, 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, the heating and dehumidification system is controlled to maintain the heating mode, and the compressor maintains the first preset frequency and continues to run.

4. The control method of the clothes drying device according to claim 3, characterized in that: Continue to detect the temperature in the clothes drying device in real time, and compare it with a second preset temperature; 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, the heating and dehumidification system is controlled to start the cooling mode for cooling, and the compressor is controlled to reduce the second preset frequency to the third preset frequency.

5. The control method of the clothes drying device according to claim 4, 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.

6. The control method of the clothes drying device according to claim 4, 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.

7. The control method of the clothes drying device according to any one of claims 2 to 5, characterized in that: 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.

8. The control method of the clothes drying device according to claim 4, characterized in that: In the final drying stage, the moisture content of the clothes to be dried is detected and compared with the preset moisture content; Determine whether to end the drying process based on the comparison result.

9. The control method of the clothes drying device according to claim 8, characterized in that: If the moisture content of the clothes to be dried is greater than the preset moisture content, the heating and dehumidification system is controlled to continue to operate in the cooling mode for cooling, and the compressor operates at a third preset frequency; If the moisture content of the clothes to be dried is less than or equal to the preset moisture content, the drying process ends.

10. A clothes drying device, characterized in that: The clothes drying device applies the clothes drying device control method according to any one of claims 1 to 9.

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