CN117661293A - Control method and device of clothes drying equipment, clothes drying equipment and storage medium - Google Patents
Control method and device of clothes drying equipment, clothes drying equipment and storage medium Download PDFInfo
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- CN117661293A CN117661293A CN202211063559.XA CN202211063559A CN117661293A CN 117661293 A CN117661293 A CN 117661293A CN 202211063559 A CN202211063559 A CN 202211063559A CN 117661293 A CN117661293 A CN 117661293A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The application provides a control method and device of clothes drying equipment, clothes drying equipment and storage medium. The control method comprises the following steps: determining whether the laundry is dried according to the acquired humidity and drying conditions of the laundry in the drum; if it is determined that the laundry is not dried, the heater is controlled to be alternately turned off and on to heat the air entering the drum until it is determined that the laundry is dried. The heater in the clothes drying equipment is controlled, so that the heater can be used as an auxiliary heat source to effectively dry clothes, the problem that the heat pump clothes drying equipment in the prior art generally dries clothes slowly is solved, the clothes drying effect is guaranteed, the working efficiency of the clothes drying equipment is improved, and the problem that the compressor and the heater in the clothes drying equipment are destroyed due to overhigh temperature is avoided.
Description
Technical Field
The embodiment of the application relates to the technical field of household appliances, in particular to a control method and device of clothes drying equipment, the clothes drying equipment and a storage medium.
Background
The heat pump clothes dryer is a clothes drying device using a heat pump circulation system as a heat source. The heat pump clothes dryer is characterized by more uniform drying, fluffiness, small damage to clothes and low energy consumption, so that the heat pump clothes dryer becomes the current main stream clothes drying equipment.
In the prior art, a heat pump clothes dryer comprises a roller, a fan and a heat pump circulating system, wherein the roller is used for placing clothes and comprises an air inlet end and an air outlet end; when the heat pump clothes dryer works, the condenser and the evaporator in the heat pump circulation system respectively perform heat and humidity exchange with air in the drum, and the hot air is dried to evaporate moisture in clothes and take away the evaporated moisture, so that the effects of removing water and drying clothes are achieved.
However, the conventional heat pump clothes dryer generally has a problem of slow drying speed of laundry due to a low drying temperature of the heat pump cycle.
Disclosure of Invention
The application provides a control method and device of clothes drying equipment, clothes drying equipment and a storage medium, and aims to solve the problem of low drying speed in the prior art.
In a first aspect, the present application provides a control method of a clothes drying apparatus, applied to a controller, where the controller is disposed in the clothes drying apparatus, and the clothes drying apparatus further includes a drum and a heater; the method comprises the following steps:
acquiring the humidity of the clothes in the drum;
determining whether the laundry is dried according to the humidity and the drying condition;
and if the clothes are not dried, controlling the heater to be turned off and on alternately to heat the air entering the drum until the clothes are dried.
Optionally, the clothes drying equipment further comprises a heat pump circulation system, and the heat pump circulation system comprises a compressor; the controlling the heater to be alternately turned off and on includes:
acquiring refrigerant parameters in the heat pump circulation system and the working temperature of the heater;
determining the exhaust temperature of the compressor according to the refrigerant parameters;
and controlling the heater to be alternately turned off and turned on according to the exhaust temperature and the working temperature.
Optionally, said controlling said heater to be alternately turned off and on according to said exhaust gas temperature and said operating temperature includes:
and controlling the heater to be alternately turned off and turned on according to the magnitude of the exhaust temperature relative to the compressor protection temperature and a first temperature threshold value and the magnitude of the working temperature relative to the heater protection temperature and a second temperature threshold value, wherein the first temperature threshold value is smaller than the compressor protection temperature, and the second temperature threshold value is smaller than the heater protection temperature.
Optionally, controlling the heater to be turned off and on alternately according to the magnitude of the exhaust gas temperature relative to the compressor protection temperature and the first temperature threshold, and the magnitude of the operating temperature relative to the heater protection temperature and the second temperature threshold includes:
If the exhaust temperature reaches the compressor protection temperature but the working temperature does not reach the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature is lower than a first temperature threshold and the working temperature does not reach the heater protection temperature, controlling the heater to be opened;
if the exhaust temperature does not reach the compressor protection temperature but the working temperature reaches the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature does not reach the compressor protection temperature and the working temperature is lower than a second temperature threshold, controlling the heater to be opened;
and if the exhaust temperature reaches the compressor protection temperature and the working temperature reaches the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature is lower than a first temperature threshold and the working temperature is lower than a second temperature threshold, controlling the heater to be opened.
Optionally, controlling the heater to be turned on includes:
determining whether a time interval between a current time and a previous starting time of the heater reaches a first duration;
and if the time interval reaches the first duration, controlling the heater to be started.
Optionally, if the time interval does not reach the first duration, determining a second duration that the heater needs to wait for, according to the first duration and the time interval, where the second duration is smaller than the first duration;
determining the starting time of the heater according to the current time and the second time;
and when the starting time is reached, controlling the heater to be started.
Optionally, the drying condition includes a target humidity and a third time period; said determining whether said laundry is dried according to said humidity and drying conditions, comprising:
determining whether the humidity reaches the target humidity;
if so, determining whether the holding time period for the humidity to reach the target humidity reaches the third time period;
if so, determining that the clothes are dry.
Optionally, the clothes drying device further includes a first fan and a second fan, the heat pump circulation system further includes a condenser, the first fan is disposed near the condenser, the second fan is disposed near the heater, the first fan and the second fan are both connected with the controller, and after the heater is controlled to be turned off, the method further includes:
And controlling the first fan to cool the condenser and/or controlling the second fan to cool the heater.
Optionally, the controlling the heater to be turned off and on alternately includes:
and controlling the heater to be alternately turned off and turned on according to the starting control time length and the stopping control time length, wherein the starting control time length and the stopping control time length are obtained by experiments according to the protection temperature of the heater and the protection temperature of the compressor in advance.
In a second aspect, the present application provides a control device of a clothes drying apparatus, integrated with a controller, the controller being disposed in the clothes drying apparatus, the clothes drying apparatus further comprising a drum and a heater; the device comprises:
an acquisition module for acquiring the humidity of the laundry in the drum;
a processing module for determining whether the laundry is dried according to the humidity and the drying condition; and if the clothes are not dried, controlling the heater to be turned off and on alternately to heat the air entering the drum until the clothes are dried.
In a third aspect, the present application provides a laundry drying apparatus comprising a drum, a heat pump cycle, a heater and a controller for implementing a control method of the laundry drying apparatus as described in the first aspect above.
In a fourth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of controlling a laundry drying appliance as described in the first aspect above.
The control method of the clothes drying equipment is applied to a controller, the controller is arranged in the clothes drying equipment, the clothes drying equipment further comprises a roller and a heater, and the method comprises the following steps: acquiring the humidity of the clothes in the drum; determining whether the laundry is dried according to the humidity and the drying condition; and if the clothes are not dried, controlling the heater to be turned off and on alternately to heat the air entering the drum until the clothes are dried. The heater in the clothes drying equipment is controlled, so that the heater can be used as an auxiliary heat source to effectively dry clothes, the problem that the heat pump clothes drying equipment in the prior art generally dries clothes slowly is solved, the clothes drying effect is guaranteed, the working efficiency of the clothes drying equipment is improved, and the problem that the compressor and the heater in the clothes drying equipment are destroyed due to overhigh temperature is avoided.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a clothes drying apparatus according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a control method of a clothes drying apparatus according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a clothes drying apparatus according to a second embodiment of the present application;
fig. 4 is a schematic flow chart of a control method of a clothes drying apparatus according to a second embodiment of the present application;
fig. 5 is a schematic structural diagram of a control device of a clothes drying apparatus according to a third embodiment of the present application;
fig. 6 is a schematic structural diagram of a controller according to a fourth embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The clothes drying equipment can be a dryer, a clothes dryer and the like, and the principle of drying clothes is as follows: the condenser and the evaporator in the heat pump circulation system respectively perform heat-moisture exchange with the air in the cylinder, the moisture in the clothes is evaporated by the hot dry air, and the evaporated moisture is taken away, so that the effects of removing water and drying the clothes are achieved. However, in practical applications, the conventional heat pump clothes drying apparatus generally has a problem of slow drying speed of clothes due to low drying temperature in the heat pump circulation system.
Aiming at the situation, the main thought of the technical scheme of the application is as follows: by adding a heater serving as an auxiliary heat source into the clothes drying equipment and providing a control method for the heater, the temperature value of clothes in the drum is continuously monitored, and the alternating closing and opening of the heater are controlled according to a preset strategy; in addition, as the control parameters in the preset control strategy are set according to the protection temperature of the compressor and the protection temperature of the heater, the problem that the compressor and the heater in the clothes drying equipment are destroyed due to overhigh temperature can be effectively avoided.
Example 1
Fig. 1 is a block diagram of a clothes drying apparatus according to an embodiment of the present application, and as shown in fig. 1, the structure of the clothes drying apparatus provided in the present application includes: the device comprises a roller, a compressor, a third fan for cooling the compressor, a motor, a power transmission belt for connecting the motor and the roller to provide power for the roller, a throttling mechanism, an evaporator, a condenser, a first fan for cooling the condenser, a heater, a second fan for cooling the heater and a main circulating fan.
Wherein, be used for placing the clothing in the cylinder, the cover is equipped with the power transmission belt on the outer wall of cylinder, and the power transmission belt is connected with the cylinder transmission, and motor drive power transmission belt rotates to make the cylinder rotate with self axis as the center. In this embodiment, the heat pump circulation system mainly includes a compressor, an evaporator, a condenser, and a throttling mechanism, where the compressor is communicated with the condenser, the condenser is communicated with the evaporator, the evaporator is communicated with the compressor through a pipeline, the throttling mechanism is disposed on the pipeline between the condenser and the evaporator, the compressor compresses a low-pressure gaseous refrigerant (i.e., a refrigerant) into a high-pressure gaseous refrigerant, the high-pressure gaseous refrigerant is delivered into the condenser, after heat dissipation, becomes a high-pressure liquid refrigerant, the flow section is contracted through the throttling mechanism, the fluid flow speed is accelerated, the pressure is reduced, thus the low-pressure liquid refrigerant enters the evaporator, absorbs heat at the evaporator to become a low-pressure gaseous refrigerant, the low-pressure gaseous refrigerant flows to the compressor, the compressor compresses the low-pressure gaseous refrigerant into a high-pressure gaseous refrigerant, and circulates like this, so that the refrigerant releases heat and condenses at the condenser, and evaporates and absorbs heat at the evaporator.
The roller comprises an air inlet end and an air outlet end, a condenser is arranged near the air inlet end, an evaporator is arranged near the air outlet end, and a heater is arranged between the condenser and the air inlet end and is close to the air inlet end. Under the action of the main circulation fan, air flows to the evaporator, the condenser and the heater in sequence from the air outlet end and returns to the roller from the air inlet end. The hot and humid air exhausted from the air outlet end is condensed into dry and cold air at the evaporator, the dry and cold air is heated into dry and hot air at the condenser, the dry and hot air is heated again at the heater, then returns into the drum from the air inlet end, the dry and hot air flows over the surface of the clothes, heats the clothes and takes away the water evaporated from the clothes, so that the clothes are quickly dried.
In this embodiment, the controller may be connected to the motor, the compressor, the heater, the first fan, the second fan, the third fan, and the main circulation fan in fig. 1, respectively.
Fig. 2 is a schematic flow chart of a control method of a clothes drying apparatus according to an embodiment of the present application, where the method of the embodiment may be performed by a control device of the clothes drying apparatus according to the embodiment of the present application, and the device may be implemented by software and/or hardware and may be integrated in a controller. As shown in fig. 2, the control method of the clothes drying apparatus of the present embodiment includes:
s101, acquiring the humidity of the clothes in the drum.
In this embodiment, the humidity of the laundry in the drum is obtained by a humidity sensor attached to the drum, and a temperature value is obtained.
In this embodiment, the temperature value acquisition process is continued until it is determined that the laundry in the drum has satisfied the drying condition.
It should be noted that, when S101 is executed, the clothes drying apparatus is in an on state, and, for example, after the user turns on the clothes drying apparatus, when the user selects "quick clothes drying mode" through the operation panel of the clothes drying apparatus, the controller starts executing S101.
S102, determining whether the clothes are dried according to the humidity and the drying conditions.
In this step, it is determined whether the laundry in the drum is dried according to the humidity value acquired in S101 and a preset drying condition. Specifically, when the humidity of the laundry in the drum is not higher than the completely dried humidity value, it may be determined that the laundry in the drum is already in a dried state; when the humidity of the laundry in the drum is higher than the completely dried humidity value, it is determined that the laundry in the drum is still wet.
Optionally, the target humidity and the third time period are included in the drying condition. In one possible embodiment, determining whether the laundry is dried according to humidity and drying conditions includes: determining whether the humidity reaches a target humidity; if so, further determining whether the holding time period for the humidity to reach the target humidity reaches a third time period; if so, determining that the clothes are dry.
Specifically, when the humidity value of the clothes in the clothes drying equipment reaches the target humidity value, judging the reaching time length and the third time length; if the time length is longer than or equal to the third time length, judging that the clothes are dried; illustratively, the third duration is 2 minutes.
Because under some conditions, especially the condition that the clothes are more, the phenomenon that one part of clothes are dried and the other part of clothes are not dried can occur, through the scheme in the embodiment, all parts of the clothes are ensured to be dried, and not only partial drying is ensured, so that the condition that the clothes are not thoroughly dried due to the fact that the drying procedure is finished when the clothes are not completely dried is avoided, and the use experience of a user is improved.
And S103, if the clothes are not dried, controlling the heater to be turned off and on alternately so as to heat the air entering the drum until the clothes are dried.
In this embodiment, when it is determined that the laundry is not dried according to the method in S102, to ensure that the compressor and the heater are not damaged, the heater is controlled to be alternately turned off and on according to a preset control strategy, so as to intermittently heat the air entering the drum until it is determined that the laundry is dried, thereby ensuring that the temperature of the heater and the compressor are not damaged during the whole laundry drying process, improving the reliability of the laundry drying apparatus, and being beneficial to prolonging the service life of the laundry drying apparatus.
In one possible implementation manner, the controller is used for acquiring the refrigerant parameters in the heat pump circulation system and the working temperature of the heater in real time when the drying program is executed, and controlling the heater to be alternately turned off and turned on according to the acquired refrigerant parameters and the working temperature based on a real-time detection strategy. In this embodiment, the real-time detection strategy determines the exhaust temperature of the compressor according to the refrigerant parameter, and then controls the heater to be turned off and on alternately according to the magnitude of the exhaust temperature relative to the protection temperature of the compressor and the magnitude of the working temperature relative to the protection temperature of the heater. For example, assuming that the condition (1) is that the discharge temperature of the compressor is greater than or equal to the protection temperature of the compressor, and the condition (2) is that the operation temperature of the heater is greater than or equal to the protection temperature of the heater, after the heater is turned on, the temperature of the refrigerant in the heat pump cycle and the temperature of the heater are continuously increased due to the effect of the heater, and when any one of the condition (1) and the condition (2) is satisfied, the heater is controlled to be turned off; after the heater is turned off, the temperature of the heater and the temperature of the refrigerant in the heat pump cycle start to decrease, and when neither condition (1) nor condition (2) is satisfied (i.e., when it is determined that the temperature of the refrigerant at the compressor outlet is less than the protection temperature of the compressor and the operating temperature of the heater is less than the protection temperature of the heater), the heater is controlled to be turned on again.
The refrigerant parameter may be a refrigerant temperature or a refrigerant pressure in the heat pump cycle system, and may be measured by a refrigerant parameter obtaining unit disposed on a pipeline of the heat pump cycle system, such as a temperature sensor or a pressure sensor, as shown in fig. 1, where the refrigerant parameter obtaining unit may be disposed on a first pipeline between the compressor and the condenser, may be disposed on a second pipeline between the condenser and the evaporator, and may be disposed on a third pipeline between the evaporator and the compressor.
Optionally, the refrigerant parameter acquiring unit is arranged on the first pipeline, and the refrigerant parameter acquired by the refrigerant parameter acquiring unit is the exhaust temperature or the exhaust pressure of the compressor. If the refrigerant parameter acquisition unit is a temperature sensor, the refrigerant temperature acquired by the refrigerant parameter acquisition unit can be directly determined as the exhaust temperature of the compressor; if the refrigerant parameter obtaining unit is a pressure sensor, the refrigerant pressure obtained by the refrigerant parameter obtaining unit can be converted into the refrigerant temperature according to the conversion relation between the temperature and the pressure, so as to obtain the exhaust temperature of the compressor.
Optionally, the refrigerant parameter acquiring unit is disposed on the second pipeline, and because the pressure reduction of the condenser on the refrigerant is small, the refrigerant parameter acquired by the refrigerant parameter acquiring unit at this time may be approximately the exhaust temperature or the exhaust pressure of the compressor. If the refrigerant parameter acquisition unit is a temperature sensor, similarly, directly determining the refrigerant temperature acquired by the refrigerant parameter acquisition unit as the exhaust temperature of the compressor; if the refrigerant parameter acquisition unit is a pressure sensor, similarly, converting the refrigerant pressure acquired by the refrigerant parameter acquisition unit into a refrigerant temperature according to the conversion relation between the temperature and the pressure, and determining the refrigerant temperature as the exhaust temperature of the compressor.
Optionally, the refrigerant parameter acquiring unit is disposed on the third pipeline, and the refrigerant parameter acquired by the refrigerant parameter acquiring unit is used for characterizing the suction temperature or suction pressure of the compressor, and at this time, the exhaust temperature or exhaust pressure of the compressor can be determined according to the compression ratio of the compressor. Specifically, if the refrigerant parameter acquisition unit is a temperature sensor, converting the refrigerant temperature acquired by the refrigerant parameter acquisition unit according to the compression ratio of the compressor to obtain the exhaust temperature of the compressor; if the refrigerant parameter acquisition unit is a pressure sensor, converting the refrigerant pressure acquired by the refrigerant parameter acquisition unit through the compression ratio of the compressor to obtain the exhaust pressure of the compressor, and converting the exhaust pressure according to the conversion relation between the temperature and the pressure to obtain the exhaust temperature of the compressor.
The working temperature used for representing the temperature of the heater can be obtained through a temperature sensor arranged on the heater, such as a detection point attached to the heater.
In another possible embodiment, the controller controls the heater to be alternately turned off and on based on a time control strategy when the drying program is executed.
In this embodiment, the time control policy may set a startup control duration and a shutdown control duration of the heater, start timing when the heater is turned on, and control the heater to be turned off when the turn-on duration of the heater reaches the startup control duration; when the heater is turned off, the timer is started again, and when the turn-off time of the heater reaches the stop control time, the heater is controlled to turn on again.
Optionally, when the time control strategy is adopted, in order to avoid damage to the heater and the compressor caused by special situations, corresponding temperature sensors may be respectively arranged on the heater and the pipeline of the compressor outlet, so as to monitor the working temperature of the heater and the exhaust temperature of the compressor respectively, and when the working temperature of the heater exceeds the heater protection temperature and/or the exhaust temperature of the compressor exceeds the compressor protection temperature, the heater is controlled to be turned off for a period of time first, and then the heater is controlled to be turned on and off alternately according to the start-up control duration and the stop control duration.
Illustratively, assume that the on-control duration is e1, the off-control duration is e2, the heater protection temperature is a, and the compressor protection temperature is B. After the heater is started, the heater is controlled alternately by starting e1 min and stopping e2 min, and when the working temperature T1 of the heater is not less than A and/or the exhaust temperature T2 of the compressor is not less than B, the heater is stopped for e3 min, and then the control is performed alternately according to the previous starting e1 and stopping e 2. Wherein, e3 is also determined by a plurality of experiments in advance according to the heater protection temperature and the compressor protection temperature, and e3 can be the same as e2 or different from e 2.
In this embodiment, the startup control duration and the shutdown control duration may be a set of durations that are determined by a large number of experiments to ensure that the heater can be utilized to the maximum extent and that the heater or the compressor is not damaged, based on the protection temperature of the compressor and the protection temperature of the heater in advance.
For example, the first target threshold value and the second target threshold value are determined according to a smaller temperature value of the protection temperature of the compressor and the protection temperature of the heater, the first target threshold value may be slightly smaller than the smaller temperature value of the protection temperature of the compressor and the protection temperature of the heater, and the second target threshold value may be slightly smaller than the first target threshold value. When the temperature of the exhaust port of the compressor and/or the working temperature of the heater reach a first target threshold value, the heater is controlled to be closed, the moment at the moment is recorded, and a second moment is obtained. According to the second moment and the first moment, the current starting-up time length of the heater can be obtained, and according to the third moment and the second moment, the current stopping-up time length of the heater can be obtained. And finally obtaining the start-up control duration and the stop control duration through repeated experiments under different working conditions.
It will be appreciated that, in different clothes drying apparatuses, the performance parameters of the heat pump circulation system and the heater may be different, and the positions, the numbers and the performance parameters of the fans may be different, so that the values of the start-up control duration and/or the stop control duration may be different.
It should be noted that, no matter which strategy is adopted, during the process of alternately turning off and on the heater, the controller continuously monitors the temperature of the clothes in the drum, and according to the step in S102, whether the clothes are dried or not, if not, the process of controlling the heater to be turned off and on alternately is continuously executed; if the heating device is dry, the flow of controlling the heater to be turned off and on alternately is stopped.
In this embodiment, by acquiring the humidity of the laundry in the drum, determining whether the laundry is dried according to the humidity and the drying condition, if it is determined that the laundry is not dried, controlling the heater to be alternately turned off and turned on so as to heat the air entering the drum until it is determined that the laundry is dried, controlling the heater in the laundry drying apparatus so that the heater can be used as an auxiliary heat source to more effectively dry the laundry, the problem that the heat pump laundry drying apparatus generally dries the laundry at a low speed in the prior art is solved, the drying effect of the laundry is ensured, the working efficiency of the laundry drying apparatus is improved, and the problem that the compressor and the heater in the laundry drying apparatus are destroyed due to the excessively high temperature is avoided.
Example two
In an exemplary embodiment, fig. 3 is a schematic structural diagram of a clothes drying device according to a second embodiment of the present application, where, as shown in fig. 3, a controller, a compressor, a motor, a heater, a first fan, a second fan, a third fan, a main circulation fan, a first temperature sensor disposed at an outlet of a condenser, a second temperature sensor disposed at a detection point of the heater, and a humidity sensor disposed in a drum in the clothes drying device, where the controller is connected to the compressor, the motor, the heater, the first fan, the second fan, the third fan, the main circulation fan, the first temperature sensor, the second temperature sensor, and the humidity sensor, respectively.
The first temperature sensor is used for acquiring the exhaust temperature of the compressor (as can be seen from the analysis in the first embodiment, the temperature of the refrigerant at the outlet of the condenser acquired by the first temperature sensor may be approximately the exhaust temperature of the compressor), and the second temperature sensor is used for acquiring the working temperature of the heater. The humidity sensor is used for acquiring the temperature of the laundry in the drum.
Optionally, the first temperature sensor and the second temperature sensor are both negative temperature coefficient (negative temperature coefficient, NTC) sensors. Fig. 4 is a schematic flow chart of a control method of a clothes drying apparatus according to the second embodiment of the present application, where the method of the present embodiment may be performed by a control device of the clothes drying apparatus according to the second embodiment of the present application, and the device may be implemented by software and/or hardware and may be integrated into the controller shown in fig. 3. As shown in fig. 4, the control method of the clothes drying apparatus of the present embodiment includes:
S201, acquiring the outlet temperature of the condenser, the working temperature of the heater and the humidity of the clothes in the drum.
The temperature sensor is used for acquiring the outlet temperature of the condenser, the working temperature of the heater and the humidity of clothes in the drum, and the acquisition process is continued until the clothes drying equipment finishes working. Specifically, the outlet temperature can be understood as the temperature of the outlet of the condenser, i.e. the temperature of the refrigerant flowing through the outlet of the condenser, during the operation of the clothes drying apparatus, and can be obtained by a first temperature sensor arranged at the outlet of the condenser. The operating temperature is understood to mean the temperature of the heater when the clothes drying apparatus is in operation, which can be obtained by means of a second temperature sensor arranged at a detection point on the heater. S202, determining whether the clothes are dried according to the humidity and the drying conditions.
The specific embodiment of this step is the same as S102, and reference may be made to the description in S102, which is not repeated here. And S203, if the clothes are not dried, controlling the heater to be alternately turned off and on according to the outlet temperature and the working temperature so as to heat the air entering the drum until the clothes are dried.
Specifically, the clothes drying equipment is managed according to the outlet temperature and the working temperature. And controlling the working states of a heater, a compressor, a condenser and the like in the clothes drying equipment according to the outlet temperature and the working temperature value.
Optionally, the heater is controlled upon determining that the laundry is not dried. Specifically, in the working process of the heater, the temperature sensor at the outlet of the condenser and the temperature sensor at the detection point on the heater continuously work, the temperature values of the outlet temperature and the working temperature are continuously monitored, the heater is alternately turned on and off according to the temperature values, and meanwhile, whether the clothes are dried or not is judged according to the method in S102 continuously according to the humidity of the clothes monitored by the humidity sensor arranged in the roller. When the clothes are determined to be dried, the heater and the compressor are controlled to be turned off, and the clothes drying equipment is controlled to execute a cold air blowing program.
Optionally, the controller controls the main circulation fan to perform cold air blowing, wherein the main circulation fan is arranged in an air circulation channel of the clothes drying device, and the main circulation fan is controlled to perform the cold air blowing program to cool the clothes drying device so that the clothes drying device meets the requirement of ending the clothes drying program. Illustratively, when the temperature at the heater detection point is detected to be lower than a third temperature threshold, such as 20 ℃, the clothes drying apparatus is controlled to be turned off, and the clothes drying program is ended.
Optionally, in this embodiment, the heater is controlled to be turned off and on alternately according to the magnitudes of the outlet temperature relative to the compressor protection temperature and the first temperature threshold, and the operating temperature relative to the heater protection temperature and the second temperature threshold, where the first temperature threshold is less than the compressor protection temperature and the second temperature threshold is less than the heater protection temperature.
Specifically, the protection temperature of the compressor can be understood as the maximum temperature of the compressor which can normally work, the heater is turned off when the outlet temperature reaches the protection temperature of the compressor, the first temperature threshold is a preset temperature value for controlling the outlet temperature of the heater to be turned on again, and the preset heater is turned on again when the outlet temperature is reduced to the first temperature threshold. The protection temperature of the compressor is exemplified by T21, the first temperature threshold is T22, T21 is greater than T22, and the values of T21-T22 = a, a are integers greater than or equal to 1, when the outlet temperature reaches T21, the heater is closed, and the outlet temperature is not higher than the protection temperature of the compressor, so that a certain protection effect is achieved on the compressor, the compressor can be ensured to work normally, and the compressor is prevented from being damaged; the outlet temperature gradually decreases after the heater is turned off, and when the outlet temperature decreases to T22, the heater is controlled to turn on again.
The heater protection temperature can be understood as the maximum temperature value of the heater which can normally work, the heater is closed when the working temperature reaches the heater protection temperature, the second temperature threshold value is a preset temperature value for controlling the working temperature of the heater to be opened again, and the heater is controlled to be opened again when the working temperature is reduced to the second temperature threshold value. Illustratively, the heater protection temperature is T41, the second temperature threshold is T42, T41 is greater than T42 and T41-t42=b, b is an integer greater than or equal to 1, and the values of b and a may be the same or different, which is not limited in this application; when the working temperature reaches T41, the heater is closed, and the working temperature is not higher than the protection temperature of the heater, so that a certain protection effect is achieved on the heater, the heater can be ensured to work normally, and the heater is prevented from being damaged; the working temperature is gradually reduced after the heater is turned off, and when the working temperature is reduced to T42, the heater is controlled to be turned on again.
In one possible implementation manner, in this embodiment, according to the magnitudes of the outlet temperature relative to the protection temperature of the compressor 2 and the first temperature threshold, and the magnitude of the working temperature relative to the protection temperature of the heater and the second temperature threshold, the outlet temperature reaches the protection temperature of the compressor or the working temperature reaches the protection temperature of the heater, the heater is controlled to be turned off, and when the outlet temperature drops to the first temperature threshold and the working temperature drops to the second temperature threshold, the heater is controlled to be turned on again, which specifically includes the following three cases:
(1) If the outlet temperature reaches the protection temperature of the compressor but the working temperature does not reach the protection temperature of the heater, the heater is controlled to be closed, and when the outlet temperature is lower than a first temperature threshold and the working temperature does not reach the protection temperature of the heater, the heater is controlled to be opened;
(2) If the outlet temperature does not reach the compressor protection temperature but the working temperature reaches the heater protection temperature, the heater is controlled to be closed, and when the outlet temperature does not reach the compressor protection temperature and the working temperature is lower than a second temperature threshold value, the heater is controlled to be opened;
(3) And if the outlet temperature reaches the protection temperature of the compressor and the working temperature reaches the protection temperature of the heater, the heater is controlled to be closed, and when the outlet temperature is lower than the first temperature threshold and the working temperature is lower than the second temperature threshold, the heater is controlled to be opened.
For example, the preset compressor protection temperature is 91 ℃, the heater protection temperature is 85 ℃, the first temperature threshold is 84 ℃, the second temperature threshold is 82 ℃, when the outlet temperature is 91 ℃ and the working temperature is 80 ℃, the heater is controlled to be turned off, and when the outlet temperature is reduced to 84 ℃ and the working temperature is still less than or equal to 82 ℃, the heater is controlled to be turned on again; when the outlet temperature is 81 ℃ and the working temperature is 85 ℃, the heater is controlled to be turned off, and when the working temperature is reduced to 82 ℃ and the outlet temperature is still less than or equal to 91 ℃, the heater is controlled to be turned on again; when the outlet temperature is 91 ℃ and the working temperature is 85 ℃, the heater is controlled to be turned off, and when the working temperature is reduced to 82 ℃ and the outlet temperature is reduced to 84 ℃, the heater is controlled to be turned on again.
Optionally, the clothes drying device further comprises a first fan and a second fan, the first fan and the second fan are different from the main circulation fan, the first fan is arranged near the condenser, the second fan is arranged near the heater, the first fan and the second fan are both connected with the controller, after the heater is controlled to be closed, the temperature of the relevant device (the condenser and/or the heater) is enabled to meet the opening condition of the heater as soon as possible by controlling the first fan and/or the second fan and/or the third fan and/or the main circulation fan, so that the heater is utilized to the maximum extent, the clothes drying speed is increased, and the clothes drying duration is shortened.
In one possible embodiment, the first fan is controlled to cool the condenser and/or the second fan is controlled to cool the heater.
The fan is a machine for improving the pressure of gas and discharging the gas so as to accelerate the air flow and further realize cooling. Specifically, when the outlet temperature reaches the protection temperature of the compressor, the controller controls the first fan to be opened after controlling the heater to be closed, and the condenser is cooled; when the working temperature reaches the protection temperature of the heater, the controller controls the second fan to be opened after controlling the heater to be closed, and the temperature of the heater is reduced; when the outlet temperature reaches the protection temperature of the compressor and the working temperature reaches the protection temperature of the heater, the first fan and the second fan are controlled to be opened simultaneously so as to cool the condenser and the heater simultaneously.
In another possible embodiment, the main circulation fan is controlled to be turned on (perform a cold air blowing process), and cold air is made to flow in the drum by the main circulation fan for the purpose of cooling the condenser and/or the heater.
Optionally, in the above two embodiments, when the condenser needs to be cooled, the third fan may be controlled to be turned on simultaneously, so that the first fan and the third fan are started simultaneously, or the main circulation fan and the third fan are started simultaneously, and the compressor is cooled by the third fan, so that the cooling of the condenser is indirectly accelerated, the temperature of the condenser meets the starting condition of the heater as soon as possible, and the heater is utilized to the maximum extent, so that the drying speed is accelerated, and the drying time is shortened.
In another possible embodiment, in some cases, for example, when the outlet temperature reaches the protection temperature of the compressor and the working temperature reaches the protection temperature of the heater, the first fan, the second fan, the third fan and the main circulation fan can be controlled to be turned on simultaneously so as to speed up the cooling speed of the related equipment, and the temperature of the related equipment can meet the starting condition of the heater as soon as possible, so that the heater is utilized to the greatest extent, the drying speed is increased, and the drying duration is shortened.
Optionally, controlling the heater to be turned on includes:
determining whether a time interval between the current time and a previous starting time of the heater reaches a first duration;
and if the time interval reaches the first time length, controlling the heater to be started.
Specifically, comparing the interval time between the re-starting of the heater and the last starting of the heater with a first time length, and controlling the heater to keep a closed state when the interval time is smaller than the first time length; if the interval time is greater than or equal to the first time length, the heater is controlled to be started, and the method can effectively avoid the damage of the heater caused by frequent starting of the heater. Illustratively, the first duration is 1 minute.
Optionally, if the time interval does not reach the first time length, determining a second time length needed to wait for the heater according to the first time length and the time interval, wherein the second time length is smaller than the first time length;
Determining the starting time of the heater according to the current time and the second time;
and when the starting time is reached, controlling the heater to be started.
Specifically, the interval time between the heater being turned on again and the heater being turned on last time is compared with the first time, and if the interval time is smaller than the first time, the interval time is subtracted from the first time to obtain a second time; and adding the current time and the second time to obtain the starting time of the heater, and controlling the heater to be started when the starting time is reached. For example, the first duration is 1 minute, the time interval is 40 seconds, the second duration is 20 seconds, the current time is 15:30:00, and the heater on time is 15:30:20.
In the embodiment, whether the clothes are dried or not is determined according to the humidity and the drying condition by acquiring the outlet temperature of a condenser in the clothes drying equipment, the working temperature of a heater and the humidity of the clothes in the drum; if it is determined that the laundry is not dried, the heater is controlled to be alternately turned off and on according to the outlet temperature and the operating temperature, so as to heat the air entering the drum until it is determined that the laundry is dried. By providing a control method for the heater in the clothes drying equipment, the heater can be used as an auxiliary heat source to effectively dry clothes, the problem that the heat pump clothes drying equipment in the prior art generally dries clothes slowly is solved, the clothes drying effect is ensured, the working efficiency of the clothes drying equipment is improved, and the problem that the compressor and the heater in the clothes drying equipment are destroyed due to overhigh temperature is avoided.
Example III
Fig. 5 is a schematic structural diagram of a control device of a clothes drying apparatus according to the third embodiment of the present application, where the device may be implemented in software and/or hardware, and may be integrated into the controller according to the first embodiment or the second embodiment. As shown in fig. 5, the control device 20 of the clothes drying apparatus of the present embodiment includes:
an acquisition module 21 and a processing module 22.
An acquisition module 21 for acquiring the humidity of the laundry inside the drum;
a processing module 22 for determining whether the laundry is dried according to the humidity and the drying condition; if it is determined that the laundry is not dried, the heater is controlled to be alternately turned off and on to heat the air entering the drum until it is determined that the laundry is dried.
Optionally, the clothes drying equipment further comprises a heat pump circulation system, and the heat pump circulation system comprises a compressor; the processing module 22 is specifically configured to:
acquiring refrigerant parameters in a heat pump circulation system and the working temperature of a heater;
determining the exhaust temperature of the compressor according to the refrigerant parameters;
the heater is controlled to be alternately turned off and on according to the exhaust temperature and the operating temperature.
Optionally, the processing module 22 is specifically configured to:
and controlling the heater to be alternately turned off and turned on according to the magnitudes of the exhaust temperature relative to the compressor protection temperature and a first temperature threshold value and the magnitude of the working temperature relative to the heater protection temperature and a second temperature threshold value, wherein the first temperature threshold value is smaller than the compressor protection temperature, and the second temperature threshold value is smaller than the heater protection temperature.
Optionally, the processing module 22 is specifically configured to:
if the exhaust temperature reaches the compressor protection temperature but the working temperature does not reach the heater protection temperature, the heater is controlled to be closed, and when the exhaust temperature is lower than a first temperature threshold and the working temperature does not reach the heater protection temperature, the heater is controlled to be opened;
if the exhaust temperature does not reach the compressor protection temperature but the working temperature reaches the heater protection temperature, the heater is controlled to be closed, and when the exhaust temperature does not reach the compressor protection temperature and the working temperature is lower than a second temperature threshold value, the heater is controlled to be opened;
and if the exhaust temperature reaches the compressor protection temperature and the working temperature reaches the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature is lower than the first temperature threshold and the working temperature is lower than the second temperature threshold, controlling the heater to be opened.
Optionally, the processing module 22 is specifically configured to:
determining whether a time interval between the current time and a previous starting time of the heater reaches a first duration;
and if the time interval reaches the first time length, controlling the heater to be started.
Optionally, the processing module 22 is further configured to:
if the time interval does not reach the first time length, determining a second time length needed to wait for the heater according to the first time length and the time interval, wherein the second time length is smaller than the first time length;
Determining the starting time of the heater according to the current time and the second time;
when the starting time is reached, the heater is controlled to be started.
Optionally, the drying condition includes a target humidity and a third time period; the processing module 22 is specifically configured to:
determining whether the humidity reaches a target humidity;
if so, determining whether the holding time period for the humidity to reach the target humidity reaches a third time period;
if so, determining that the clothes are dry.
Optionally, the clothes drying device includes a first fan and a second fan, the heat pump circulation system further includes a condenser, the first fan is disposed near the condenser, the second fan is disposed near the heater, the first fan and the second fan are both connected with the controller, and the processing module 22 is further configured to:
the first fan is controlled to cool down the condenser and/or the second fan is controlled to cool down the heater.
Optionally, the processing module 22 is specifically configured to:
and controlling the heater to be alternately turned off and turned on according to the starting control time length and the stopping control time length, wherein the starting control time length and the stopping control time length are preset and obtained through experiments according to the protection temperature of the heater and the protection temperature of the compressor.
The control device of the clothes drying equipment provided by the embodiment can execute the control method of the clothes drying equipment provided by the embodiment of the method, and has the corresponding functional modules and beneficial effects of the execution method. The implementation principle and technical effect of the present embodiment are similar to those of the above method embodiment, and are not described here again.
Example IV
Fig. 6 is a schematic structural diagram of a controller according to a fourth embodiment of the present application, and as shown in fig. 6, the controller 30 includes a memory 31, a processor 32, and a computer program stored in the memory and capable of running on the processor; the number of processors 32 in the controller 30 may be one or more, one processor 32 being taken as an example in fig. 6; the processor 32, the memory 31 in the controller 30 may be connected by a bus or other means, for example in fig. 6.
The memory 31 is a computer readable storage medium, and may be used to store a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the acquisition module 21 and the processing module 22 in the embodiment of the present application. The processor 32 executes various functional applications and data processing of the laundry drying appliance by running software programs, instructions and modules stored in the memory 31, i.e. implements the control method of the laundry drying appliance described above.
The memory 31 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal, etc. In addition, the memory 31 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 31 may further include memory remotely located with respect to processor 32, which may be connected to the garment drying apparatus via a grid. Examples of such grids include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Example five
A fourth embodiment of the present application also provides a computer-readable storage medium having stored thereon a computer program for executing a control method of a laundry drying appliance when executed by a computer processor, the method comprising:
acquiring the humidity of the clothes in the drum; determining whether the laundry is dried according to the humidity and the drying condition; if it is determined that the laundry is not dried, the heater is controlled to be alternately turned off and on to heat the air entering the drum until it is determined that the laundry is dried.
Of course, the computer program of the computer readable storage medium provided in the embodiments of the present application is not limited to the above method operations, but may also perform the related operations in the control method of the clothes drying apparatus provided in any embodiment of the present application.
From the above description of embodiments, it will be clear to a person skilled in the art that the present application may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a FLASH memory (FLASH), a hard disk, or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a grid device, etc.) to perform the method of the embodiments of the present application.
It should be noted that, in the embodiment of the control device of the clothes drying apparatus, each unit and module included are only divided according to the functional logic, but are not limited to the above-mentioned division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present application.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, while the present application has been described in connection with the above embodiments, the present application is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, the scope of which is defined by the scope of the appended claims.
Claims (12)
1. A control method of clothes drying equipment is characterized by being applied to a controller, wherein the controller is arranged in the clothes drying equipment, and the clothes drying equipment also comprises a roller and a heater; the method comprises the following steps:
Acquiring the humidity of the clothes in the drum;
determining whether the laundry is dried according to the humidity and the drying condition;
and if the clothes are not dried, controlling the heater to be turned off and on alternately to heat the air entering the drum until the clothes are dried.
2. The method of claim 1, further comprising a heat pump cycle in the clothes drying apparatus, the heat pump cycle comprising a compressor; the controlling the heater to be alternately turned off and on includes:
acquiring refrigerant parameters in the heat pump circulation system and the working temperature of the heater;
determining the exhaust temperature of the compressor according to the refrigerant parameters;
and controlling the heater to be alternately turned off and turned on according to the exhaust temperature and the working temperature.
3. The method of claim 2, wherein said controlling said heater to be alternately turned off and on in accordance with said exhaust gas temperature and said operating temperature comprises:
and controlling the heater to be alternately turned off and turned on according to the magnitude of the exhaust temperature relative to the compressor protection temperature and a first temperature threshold value and the magnitude of the working temperature relative to the heater protection temperature and a second temperature threshold value, wherein the first temperature threshold value is smaller than the compressor protection temperature, and the second temperature threshold value is smaller than the heater protection temperature.
4. The method of claim 3, wherein controlling the heater to alternately turn off and on based on the magnitude of the discharge temperature relative to a compressor protection temperature and a first temperature threshold, and the magnitude of the operating temperature relative to a heater protection temperature and a second temperature threshold, comprises:
if the exhaust temperature reaches the compressor protection temperature but the working temperature does not reach the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature is lower than a first temperature threshold and the working temperature does not reach the heater protection temperature, controlling the heater to be opened;
if the exhaust temperature does not reach the compressor protection temperature but the working temperature reaches the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature does not reach the compressor protection temperature and the working temperature is lower than a second temperature threshold, controlling the heater to be opened;
and if the exhaust temperature reaches the compressor protection temperature and the working temperature reaches the heater protection temperature, controlling the heater to be closed, and when the exhaust temperature is lower than a first temperature threshold and the working temperature is lower than a second temperature threshold, controlling the heater to be opened.
5. The method of claim 4, the controlling the heater to be on, comprising:
determining whether a time interval between a current time and a previous starting time of the heater reaches a first duration;
and if the time interval reaches the first duration, controlling the heater to be started.
6. The method of claim 5, wherein the method further comprises:
if the time interval does not reach the first time length, determining a second time length needed to wait for the heater according to the first time length and the time interval, wherein the second time length is smaller than the first time length;
determining the starting time of the heater according to the current time and the second time;
and when the starting time is reached, controlling the heater to be started.
7. The method of claim 1, wherein the drying conditions include a target humidity and a third time period; said determining whether said laundry is dried according to said humidity and drying conditions, comprising:
determining whether the humidity reaches the target humidity;
if so, determining whether the holding time period for the humidity to reach the target humidity reaches the third time period;
If so, determining that the clothes are dry.
8. The method of claim 4, further comprising a first fan and a second fan in the clothes drying apparatus, the heat pump cycle further comprising a condenser, the first fan being disposed adjacent to the condenser, the second fan being disposed adjacent to the heater, the first fan and the second fan both being connected to the controller, the method further comprising, after the heater is controlled to be off:
and controlling the first fan to cool the condenser and/or controlling the second fan to cool the heater.
9. The method of claim 1, wherein said controlling the heater to alternately turn off and on comprises:
and controlling the heater to be alternately turned off and turned on according to the starting control time length and the stopping control time length, wherein the starting control time length and the stopping control time length are obtained by experiments according to the protection temperature of the heater and the protection temperature of the compressor in advance.
10. The control device of the clothes drying equipment is characterized by being integrated with a controller, wherein the controller is arranged in the clothes drying equipment, and the clothes drying equipment also comprises a roller and a heater; the device comprises:
An acquisition module for acquiring the humidity of the laundry in the drum;
a processing module for determining whether the laundry is dried according to the humidity and the drying condition; and if the clothes are not dried, controlling the heater to be turned off and on alternately to heat the air entering the drum until the clothes are dried.
11. A laundry drying appliance comprising a drum, a heat pump cycle, a heater and a controller for implementing a control method of the laundry drying appliance according to any one of claims 1 to 9.
12. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements a method of controlling a laundry drying appliance according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211063559.XA CN117661293A (en) | 2022-09-01 | 2022-09-01 | Control method and device of clothes drying equipment, clothes drying equipment and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211063559.XA CN117661293A (en) | 2022-09-01 | 2022-09-01 | Control method and device of clothes drying equipment, clothes drying equipment and storage medium |
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| CN117661293A true CN117661293A (en) | 2024-03-08 |
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| CN202211063559.XA Pending CN117661293A (en) | 2022-09-01 | 2022-09-01 | Control method and device of clothes drying equipment, clothes drying equipment and storage medium |
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- 2022-09-01 CN CN202211063559.XA patent/CN117661293A/en active Pending
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