CN115387100A

CN115387100A - Control method, device and equipment of heat pump clothes dryer

Info

Publication number: CN115387100A
Application number: CN202110565332.4A
Authority: CN
Inventors: 郑晓秋; 邴进东; 杨坤
Original assignee: Haier Smart Home Co Ltd; Chongqing Haier Front Loading Washing Machine Co Ltd
Current assignee: Haier Smart Home Co Ltd; Chongqing Haier Front Loading Washing Machine Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-11-25
Also published as: WO2022247526A1

Abstract

The application belongs to the technical field of clothes dryers, and particularly relates to a control method, device and equipment of a heat pump clothes dryer. The application aims at solving the problems that in the prior art, the heat pump clothes dryer cannot exert the best effect, the drying efficiency is influenced, and the energy consumption is high. According to the control method of the heat pump clothes dryer, the current moisture content of the clothes in the roller is obtained, the drying stage of the clothes can be deduced according to the current moisture content, the starting and stopping states of the motor rotating speed, the fan rotating speed and the heating wires are adjusted according to the drying stage, the motor rotating speed is not only controlled and adjusted, the control strategy of the heat pump clothes dryer is not single, the heat pump clothes dryer can exert the best effect, and therefore the heat pump clothes dryer can be used for avoiding too high energy consumption when the efficiency of the heat pump clothes dryer is improved.

Description

Control method, device and equipment of heat pump clothes dryer

Technical Field

The application belongs to the technical field of clothes dryers, and particularly relates to a control method, device and equipment of a heat pump clothes dryer.

Background

A heat pump clothes dryer is a common household appliance for drying clothes. The heat pump clothes dryer comprises a roller, a fan, an air channel and a heat pump system, wherein the roller is used for containing clothes and can rotate, the air channel is communicated with the roller, the heat pump system is used for exchanging heat with air in the air channel, and the fan is used for driving air to circularly flow between the roller and the air channel.

In order to improve the drying effect of the clothes, the heat pump clothes dryer further comprises a detection device and a controller electrically connected with the detection device, wherein the detection device is used for detecting the humidity of the clothes, and the controller controls the rotating speed of the drum according to the humidity detected by the detection device. When the humidity of the clothes is high, the rotating speed of the drum is increased, so that the contact area between the clothes and the hot air is increased, and the drying efficiency of the clothes is improved.

However, in the process of drying clothes, the humidity of the clothes can be changed greatly, and the heat pump clothes dryer cannot exert the optimal effect by adopting a single control strategy, thereby affecting the drying efficiency and having high energy consumption.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the problems that the heat pump clothes dryer in the prior art cannot exert the best effect, the drying efficiency is affected, and the energy consumption is high, embodiments of the present application provide a control method, apparatus, and device for the heat pump clothes dryer.

According to a first aspect of embodiments of the present application, embodiments of the present application provide a control method of a heat pump dryer, obtaining a current moisture content of laundry inside a drum of the heat pump dryer; determining a drying stage of the clothes according to the current moisture content, wherein the drying stage comprises an early stage clothes drying stage, a middle stage clothes drying stage and a later stage clothes drying stage; and adjusting working parameters of the heat pump clothes dryer according to the drying stage, wherein the working parameters comprise the rotating speed of a motor, the rotating speed of a fan and the starting and stopping states of a heating wire in an air duct.

The control method as described above, wherein the determining the drying stage of the laundry according to the current moisture content specifically includes: acquiring a first preset water content and a second preset water content, wherein the first preset water content is greater than the second preset water content; and determining the drying stage of the clothes according to the current water content, the first preset water content and the second preset water content.

The control method as described above, wherein the determining the drying stage of the laundry according to the current moisture content, the first preset moisture content, and the second preset moisture content includes:

when the current water content is larger than or equal to the first preset water content, determining that the drying stage of the clothes is an early-stage clothes drying stage;

when the current water content is between the first preset water content and the second preset water content, determining that the drying stage of the clothes is a middle-stage drying stage;

and when the current water content is smaller than or equal to the second preset water content, determining that the drying stage of the clothes is a later-stage clothes dryer stage.

The control method as described above, wherein the adjusting the operating parameters of the heat pump dryer according to the drying stage specifically includes:

when the clothes are in the early stage of clothes drying, adjusting the rotating speed of the motor to a first motor rotating speed interval, adjusting the rotating speed of the fan to a first fan rotating speed interval, and adjusting the heating wire to a heating state;

when the clothes are in a middle-stage clothes drying stage, adjusting the rotating speed of the motor to a second motor rotating speed interval, adjusting the rotating speed of the fan to a first fan rotating speed interval, and adjusting the starting and stopping states of the heating wires according to the air outlet temperature of the roller, wherein the rotating speed in the second motor rotating speed interval is greater than that in the first motor rotating speed interval;

when the clothes are in the later stage of the clothes dryer, the rotating speed of the motor is adjusted to a first motor rotating speed interval, the rotating speed of the fan is adjusted to a second fan rotating speed interval, the heating wire is adjusted to be in a heating stop state, and the rotating speed in the first fan rotating speed interval is larger than the rotating speed in the second fan rotating speed interval.

The control method described above, wherein the adjusting of the start-stop state of the heater strip according to the outlet air temperature of the drum specifically includes: acquiring the air outlet temperature of the roller; if the air outlet temperature is greater than or equal to a first preset temperature, adjusting the heating wire to be in a heating stop state; and if the air outlet temperature is less than or equal to a second preset temperature, adjusting the heating wire to be in a heating state, wherein the second preset temperature is less than the first preset temperature.

According to a second aspect of embodiments of the present application, embodiments of the present application provide a control apparatus of a heat pump dryer, including:

an obtaining module, configured to obtain a current moisture content of laundry in a drum of the heat pump dryer;

the confirming module is used for confirming the drying stage of the clothes according to the current moisture content, wherein the drying stage comprises an early stage clothes drying stage, a middle stage clothes drying stage and a later stage clothes dryer stage;

and the processing module is used for adjusting working parameters of the heat pump clothes dryer according to the drying stage, wherein the working parameters comprise the rotating speed of a motor, the rotating speed of a fan and the starting and stopping states of heating wires in an air duct.

The control device as described above, wherein the determining module is specifically configured to obtain a first preset water content and a second preset water content, and the first preset water content is greater than the second preset water content; and determining the drying stage of the clothes according to the current water content, the first preset water content and the second preset water content.

The control device as described above, wherein the determining module is specifically configured to determine that the drying stage of the laundry is an early stage drying stage when the current moisture content is greater than or equal to the first preset moisture content; when the current water content is between the first preset water content and the second preset water content, determining that the drying stage of the clothes is a middle-stage drying stage; and when the current water content is less than or equal to the second preset water content, determining that the drying stage of the clothes is a later-stage clothes dryer stage.

The control device as described above, wherein the processing module is specifically configured to, when the clothes are in an early stage of clothes drying, adjust the motor rotation speed to a first motor rotation speed interval, adjust the fan rotation speed to a first fan rotation speed interval, and adjust the heating wire to a heating state; when the clothes are in a middle-stage clothes drying stage, adjusting the rotating speed of the motor to a second motor rotating speed interval, adjusting the rotating speed of the fan to a first fan rotating speed interval, and adjusting the starting and stopping states of the heating wires according to the air outlet temperature of the roller, wherein the rotating speed in the second motor rotating speed interval is greater than that in the first motor rotating speed interval; when the clothes are in the later stage of the clothes dryer, the rotating speed of the motor is adjusted to the first motor rotating speed interval, the rotating speed of the fan is adjusted to the second fan rotating speed interval, the heating wire is adjusted to be in a heating stop state, and the rotating speed in the first fan rotating speed interval is larger than the rotating speed in the second fan rotating speed interval.

The control device is configured to, wherein the processing module is specifically configured to obtain an outlet air temperature of the drum; if the air outlet temperature is greater than or equal to a first preset temperature, adjusting the heating wire to be in a heating stop state; and if the air outlet temperature is less than or equal to a second preset temperature, adjusting the heating wire to be in a heating state, wherein the second preset temperature is less than the first preset temperature.

According to a third aspect of embodiments of the present application, embodiments of the present application provide a control apparatus of a heat pump dryer, including at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method according to any one of the first aspect of the embodiments of the present application.

According to a fourth aspect of embodiments of the present application, embodiments of the present application provide a heat pump clothes dryer, including: the device comprises a box body, a roller, an air duct, a condenser, a fan, a motor, a heating wire, a fireproof guard plate, a detection device and at least one processor; the drum is rotatably arranged in the box body and is provided with a dry hot air inlet; the air duct comprises a first part which is communicated with an air outlet of the condenser and a dry hot air inlet of the roller, and the fan is used for driving air to flow in the air duct and the roller; the fireproof protection plate is connected with the box body and jointly forms an installation space capable of being communicated with the first part, the heating wire is located in the installation space, and the heating wire is fixed on the fireproof protection plate; the detection device is used for acquiring the current moisture content of the clothes in the drum;

the processor is used for determining a drying stage of the clothes according to the current moisture content detected by the detection device and adjusting working parameters of the heat pump clothes dryer according to the drying stage, wherein the drying stage comprises an early stage clothes drying stage, a middle stage clothes drying stage and a later stage clothes dryer stage, and the working parameters comprise motor rotating speed, fan rotating speed and starting and stopping states of the heating wires.

The heat pump clothes dryer is characterized in that the rear side plate of the box body is provided with an air inlet opposite to the dry hot air inlet, and the fan is arranged on the rear side plate; the heat pump clothes dryer comprises a ventilation cover shell, the ventilation cover shell is covered on the rear side plate, and the ventilation cover shell and the rear side plate jointly define a communication air channel for communicating the air inlet with a fan outlet of the fan;

the fire prevention backplate sets up in the intercommunication wind channel, the fire prevention backplate includes first enclosure wall, third enclosure wall and is located second enclosure wall between first enclosure wall and the third enclosure wall, the second enclosure wall with first enclosure wall and third enclosure wall are perpendicular to be connected, first enclosure wall and third enclosure wall all with the posterior lateral plate is connected.

The heat pump clothes dryer comprises a first enclosing wall, a second enclosing wall, a rear side plate and a first air inlet pipe, wherein the first enclosing wall is provided with a first air inlet pipe and a second air inlet pipe; the lower end of the second surrounding wall protrudes downwards to form a lower guide plate, the lower guide plate extends obliquely, and the distance between the lower guide plate and the rear side plate is gradually increased from bottom to top.

The heat pump clothes dryer as described above, wherein a first connecting edge facing the third wall is convexly arranged at one end of the first surrounding wall, which is far away from the second surrounding wall, and a second connecting edge facing the first surrounding wall is convexly arranged at one end of the third surrounding wall, which is far away from the second surrounding wall, and both the first connecting edge and the second connecting edge are connected with the rear side plate.

According to a fifth aspect of embodiments of the present application, there is provided a computer-readable storage medium having stored therein computer-executable instructions, which when executed by a processor, are configured to implement the method according to any one of the first aspect of embodiments of the present application.

According to a sixth aspect of embodiments of the present application, there is provided a computer program product comprising a computer program, the computer program being executable by a processor to perform the method according to any one of the first aspect of embodiments of the present application.

The technical personnel in the field can understand that, according to the control method, the control device and the control equipment of the heat pump clothes dryer in the embodiment of the application, the current moisture content of clothes in the roller is obtained, the drying stage where the clothes are located can be deduced from the current moisture content, the starting and stopping states of the motor rotating speed, the fan rotating speed and the heating wire are adjusted according to the drying stage, the control strategy of the heat pump clothes dryer is not single, the heat pump clothes dryer can exert the best effect, and therefore the excess energy consumption can be avoided when the efficiency of the heat pump clothes dryer is improved.

Drawings

Preferred embodiments of a control method, apparatus and device of a heat pump dryer according to an embodiment of the present application are described below with reference to the accompanying drawings. The attached drawings are as follows:

FIG. 1 is a schematic view of a heat pump dryer in the related art;

FIG. 2 is a schematic diagram of a heat pump clothes dryer provided in an embodiment of the present application;

FIG. 3 is a flow chart illustrating a control method of a heat pump clothes dryer according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow chart illustrating another control method for a heat pump clothes dryer according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a control device of a heat pump clothes dryer according to an embodiment of the present application;

fig. 6 is a schematic diagram of a control apparatus of a heat pump clothes dryer in an embodiment of the present application;

FIG. 7 is a rear view of a heat pump clothes dryer provided in an embodiment of the present application;

FIG. 8 is a schematic perspective view of a heat pump clothes dryer provided in an embodiment of the present application;

fig. 9 is a schematic perspective view of the connection of the fire protection shield and the heating wire in the embodiment of the present application.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application to assist in understanding, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 is a schematic view of a heat pump dryer in the related art. Referring to fig. 1, the heat pump dryer 100 includes a cabinet 10, a drum 20, a motor 30, a fan 40, an air duct, and a heat pump system 50, at least the drum 20, the motor 30, and the heat pump system 50 are disposed in the cabinet 10, and the cabinet 10 protects the drum 20, the motor 30, and the heat pump system 50. The motor 30 is used for driving the drum 20 to rotate, the drum 20 is used for containing clothes, a dry hot air inlet (located at the right end of the drum 20 in fig. 1) is formed in the bottom of the drum 20, a wet hot air outlet (located at the left end of the drum 20 in fig. 1) is formed in the mouth of the drum 20, the air duct is communicated with the drum 20, the fan 40 is used for driving air to circularly flow in the air duct and the drum 20, and the heat pump system 50 is used for drying the clothes in the drum 20.

The heat pump system 50 comprises a compressor 51, a condenser 52 and an evaporator 53, wherein a hot and humid air outlet of the drum 20 is communicated with an air inlet of the evaporator 53, the compressor 51 is positioned between an air outlet of the evaporator 53 and an air inlet of the condenser 52, an air outlet of the condenser 52 is communicated with a hot and dry air inlet of the drum 20, and the evaporator 53, the compressor 51 and the condenser 52 are sequentially connected to form a heat pump loop for circulating and flowing a refrigerant.

The drying process of the heat pump dryer 100 is as follows: the hot and humid air entering the air duct from the hot and humid air outlet of the drum 20 enters the evaporator 53 from the air inlet of the evaporator 53 and exchanges heat with the refrigerant of the evaporator 53, the heat of the hot and humid air is exchanged with the refrigerant in the evaporator 53, so that the refrigerant is heated and gasified, the moisture in the hot and humid air is condensed into condensed water due to the temperature reduction and separated from the air under the gravity, and the dry and cold air without a large amount of moisture is discharged from the air outlet of the evaporator 53 and then enters the condenser 52 from the air inlet of the condenser 52.

The refrigerant heated and gasified in the evaporator 53 is changed into high-temperature and high-pressure gas by the compressor 51, and then flows into the condenser 52, and exchanges heat with the dehumidified dry and cold air, and the dry and cold air is changed into dry and hot air after absorbing a large amount of heat of the high-temperature and high-pressure gas-phase refrigerant, and is discharged from the air outlet of the condenser 52, and then flows into the drum 20 from the dry and hot air inlet of the drum 20, so as to dry the clothes in the drum 20.

The hot and dry air changes into hot and humid air after evaporating water in the wet laundry, and then enters the duct from the hot and humid air outlet of the drum 20 again, thereby starting the next cycle. The refrigerant that has lost heat in the condenser 52 flows back to the evaporator 53 to begin the next cycle. Thus, the drying of the laundry can be finally realized.

In order to improve the laundry drying effect, the heat pump dryer 100 further includes a detection means for detecting humidity of the laundry, and a controller electrically connected to the detection means, the controller controlling the rotation speed of the drum 20 according to the humidity detected by the detection means. When the humidity of the laundry is high, the rotation speed of the drum 20 is increased to increase a contact area of the laundry with the hot air, thereby facilitating improvement of the laundry drying efficiency.

However, during the drying process, the humidity of the laundry may change greatly, and only the rotation speed of the motor is controlled according to the humidity of the laundry, and at this time, the control strategy of the heat pump dryer 100 is relatively single, and the heat pump dryer 100 cannot exert the best effect, so that the drying efficiency is relatively low and the energy consumption is relatively high.

In view of this, the present application may consider that the motor, the fan 40 and the heating wire 60 are cooperatively controlled according to the moisture content of the laundry, so that the operation states of the motor, the fan 40 and the heating wire 60 are all adapted to the moisture content of the laundry, which is beneficial to enabling the heat pump clothes dryer to exert the best effect, and the heat pump clothes dryer has higher drying efficiency and lower energy consumption.

Fig. 2 is a schematic diagram of a heat pump clothes dryer provided in an embodiment of the present application, and fig. 3 is a schematic flowchart of a control method of the heat pump clothes dryer provided in the embodiment of the present application. Referring to fig. 2 and 3, the present embodiment provides a control method of a heat pump dryer, which is mainly applied to the entire drying process of the heat pump dryer 100, for detecting the water content of laundry within the drum 20 of the heat pump dryer 100 and controlling the heat pump dryer 100 according to the water content.

The execution main body of the control method of the heat pump clothes dryer provided by the embodiment of the application can be the heat pump clothes dryer 100, and can also be a control device capable of controlling the heat pump clothes dryer, such as a server or a terminal device. The following embodiment takes the heat pump dryer 100 as an example, and schematically illustrates a control method of the heat pump dryer provided in the embodiment of the present application.

The control method of the heat pump clothes dryer provided by the embodiment mainly comprises the following steps:

step 101: and acquiring the current water content of the clothes in the drum of the heat pump clothes dryer.

The laundry in the drum 20 is laundry to be dried, and the moisture content is a ratio of moisture contained in the laundry to be dried to a weight of the laundry to be dried. Specifically, the possible implementation steps of obtaining the current moisture content of the laundry in the drum 20 of the heat pump dryer 100 may include the following steps 1-2:

step 1: the weight and humidity of the laundry in the drum are acquired.

The step can be implemented by an acquisition module, specifically, the acquisition module may include a humidity sensor and a weighing sensor, and the humidity sensor may be disposed inside the drum 20 or at a hot and humid air outlet of the drum 20, and is used for acquiring humidity of the laundry; the load cell may be disposed on an outer wall of the drum 20 for collecting a total weight of the drum 20 and laundry to be dried in the drum 20. Wherein, the weight of the drum 20 is a constant, and the weight of the laundry can be obtained by subtracting the weight of the drum 20 from the total weight detected by the load cell.

Of course, the humidity sensor may be replaced by a metal bar electrode, the metal bar electrode is used to detect the impedance value of the laundry, and the metal bar electrode can also detect the humidity of the laundry because the impedance value of the laundry is proportional to the humidity.

Step 2: and acquiring the current water content of the clothes according to the weight and the humidity of the clothes.

As can be seen from the foregoing, the moisture content is the ratio of the moisture contained in the laundry to be dried to the weight of the laundry to be dried, so that the obtained ratio is the current moisture content of the laundry when the obtained humidity of the laundry is compared with the weight of the laundry.

Step 102: and determining the drying stage of the clothes according to the current moisture content, wherein the drying stage comprises an early stage clothes drying stage, a middle stage clothes drying stage and a later stage clothes drying stage.

It is understood that the heat pump dryer 100 may enter the early stage drying stage, the middle stage drying stage, and the later stage dryer stage in sequence in time. In the early clothes drying stage, the clothes are dried for a short time, and the moisture content of the clothes is high; in the later stage of drying, the clothes are dried for a longer time, and the water content of the clothes is lower; the water content of the clothes at the middle stage of drying is between that of the clothes at the previous stage of drying and that of the clothes at the later stage of drying. Therefore, the moisture content of the clothes is changed in the drying process, and the drying stage of the clothes can be accurately determined by analyzing the moisture content of the clothes.

Specifically, the possible implementation manner of determining the drying stage of the laundry according to the current moisture content is as follows: acquiring a first preset water content and a second preset water content; and determining the drying stage of the clothes according to the current moisture content, the first preset moisture content and the second preset moisture content. Wherein the first preset water content is greater than the second preset water content.

In one example, the first predetermined water content and the second predetermined water content may be obtained through a plurality of experimental analyses, and may be preset in the processor of the heat pump clothes dryer 100. At this time, the heat pump dryer 100 may directly obtain the preset first preset water content and the second preset water content. For example, the first predetermined moisture content may be 60% and the second predetermined moisture content may be 10%.

In another example, after the current moisture content of the laundry is obtained, the heat pump dryer 100 may obtain the first preset moisture content and the second preset moisture content through the following steps 1 to 3.

Step 1: and acquiring a historical data set of the heat pump clothes dryer in a historical time length, wherein the historical data set is the historical water content of the clothes and the time corresponding to the historical water content when the heat pump clothes dryer operates once.

Illustratively, within the historical duration, the heat pump clothes dryer 100 reports the obtained current moisture content to the server in the process of drying the clothes, the server obtains the reported moisture content of the heat pump clothes dryer 100 and stores the reported moisture content as the historical moisture content, and meanwhile, the server records the reported time point, which is the time corresponding to the historical moisture content.

The historical time period is not limited, for example, the historical time period may be 1 month, that is, a historical data set of the operation of the heat pump dryer 100 in the past month is obtained. It is understood that if the user dries the laundry using the heat pump dryer 100 2 times in the past month, the server can acquire 2 history data sets.

Step 2: and sequencing the historical water content of each historical data group according to a time sequence, acquiring a first initial water content corresponding to the time when the initial time passes through a first preset time length in each historical data group, and acquiring a second initial water content corresponding to the time when the initial time passes through a second preset time length in each historical data group. The first preset time length is less than the second preset time length.

The purpose of this step is to obtain a first initial moisture content of the laundry when the heat pump dryer 100 is operated for a first preset time period and a second initial moisture content of the laundry when the heat pump dryer 100 is operated for a second preset time period in the drying process by analyzing past data of the heat pump dryer 100. The first preset time period may be understood as a general time period required for the end of the early stage drying stage of the heat pump clothes dryer 100, and the second preset time period may be understood as a general time period required for the end of the middle stage drying stage of the heat pump clothes dryer 100.

The first and second preset time periods may be designed according to actual experience and may be preset by updating a program code of the heat pump dryer 100. And, the first preset time period and the second preset time period are related to the total time period for which the heat pump dryer 100 is operated. For example, when the total time period of the operation of the heat pump clothes dryer 100 is 45min, the first preset time period may be 10min, and the second preset time period may be 30min.

Here, the initial time refers to the time described first in each history data group. For example, as shown in table 1, when one acquired history data set is arranged in time series, the initial time is 15:03, taking the first preset time period of 10min and the second preset time period of 30min as an example, the first initial water content is 70%, and the second initial water content is 30%.

TABLE 1

Time of day	15：03	15：08	15：13	15：18	15：23
						Water content ratio	90％	80％	70％	60％	50％
Time of day	15：28	15：33	15：38	15：43	15：48
						Water content ratio	40％	30％	20％	10％	2％

The heat pump dryer 100 has a plurality of operation modes such as a fast drying mode, a standard drying mode, a wool drying mode, etc., and when a user selects one of the operation modes, the heat pump dryer 100 executes a program corresponding to the operation mode, and the total time period in which the heat pump dryer 100 operates is determined. Also, when the heat pump dryer 100 dries laundry in different operation modes, the total time period of operation thereof is also different.

Therefore, in different operation modes, the time length required for ending the early stage drying stage and the time length required for ending the middle stage drying stage of the heat pump clothes dryer 100 are different, and the first preset time length and the second preset time length corresponding to the different operation modes may also be different.

Further, before the historical water content of each historical data group is sorted according to the time sequence, the historical data groups may be classified, specifically, the historical data groups obtained by operating the heat pump clothes dryer 100 in the same operation mode are classified into the same category, then when the first initial water content and the second initial water content are obtained, the historical data groups of the same category adopt the same first preset time length and the same second preset time length, and the historical data groups of different categories adopt different first preset time lengths and second preset time lengths.

And step 3: and taking the average value of all the first initial water contents as a first preset water content, and taking the average value of all the second initial water contents as a second preset water content.

The step is to use an average value of the moisture content of the clothes when the heat pump clothes dryer 100 operates for a first preset time within a historical time as a first preset moisture content, use an average value of the moisture content of the clothes when the heat pump clothes dryer operates for a second preset time as a second preset moisture content, and use the first preset moisture content and the second preset moisture content as parameters for judging a drying stage of the clothes.

So set up, compare with directly predetermineeing first preset moisture content and second preset moisture content, this example is through carrying out the analysis to the historical data of heat pump dryer 100 to calculate and draw first preset moisture content and second preset moisture content, and then can be more accurate be used for judging the stoving stage of clothing.

And after the first preset water content and the second water content are obtained, determining a drying stage of the clothes according to the current water content, the first preset water content and the second preset water content.

Optionally, when the current moisture content of the laundry is greater than or equal to the first preset moisture content, determining that the drying stage of the laundry is the early stage drying stage.

Optionally, when the current moisture content of the laundry is between the first preset moisture content and the second preset moisture content, it is determined that the drying stage of the laundry is the middle-stage drying stage.

Optionally, when the current moisture content of the laundry is less than or equal to the second preset moisture content, determining that the drying stage of the laundry is the later stage of the dryer.

Taking the first preset water content of 60% and the second preset water content of 10% as an example for explanation, when the current water content of the clothes is 70%, the drying stage of the clothes is the early stage dryer stage; when the current water content of the clothes is 40%, the drying stage of the clothes is a middle-stage drying stage; when the current moisture content of the clothes is 10%, the drying stage of the clothes is the later stage drying stage.

Step 103: and adjusting working parameters of the heat pump clothes dryer according to the drying stage, wherein the working parameters comprise the rotating speed of a motor, the rotating speed of a fan and the starting and stopping states of heating wires in an air duct.

It should be noted that, as shown in fig. 2, the motor 30 is only drivingly connected to the drum 20 so that the drum 20 can be driven alone. That is, the drum 20 and the fan 40 of the heat pump dryer 100 in this embodiment are not driven by the same driver, so that the motor rotation speed and the fan rotation speed can be adjusted separately, and the rotation speed of the drum 20 and the wind speed in the wind path can be adjusted separately.

The air path includes a first portion A1 communicating the air outlet of the condenser 52 with the dry hot air inlet of the drum 20, and the heating wire 60 is located in the air path of the first portion A1. The hot and dry air discharged from the air outlet of the condenser 52 may be secondarily heated while passing through the heater wire 60, so that the temperature of the hot and dry air flowing into the inside of the drum 20 is increased again, thereby accelerating the drying speed and improving the drying efficiency.

Optionally, when the clothes are in the early stage of drying, the motor speed is adjusted to a first motor speed interval, the fan speed is adjusted to a first fan speed interval, and the heating wire 60 is adjusted to be in a heating state.

Optionally, when the clothes are in the middle-stage clothes drying stage, the motor rotation speed is adjusted to a second motor rotation speed interval, the fan rotation speed is adjusted to a first fan rotation speed interval, the start-stop state of the heating wire 60 is adjusted according to the outlet air temperature of the drum 20, and the rotation speed in the second motor rotation speed interval is greater than that in the first motor rotation speed interval.

Optionally, when the clothes are in the later stage of the clothes dryer, the rotating speed of the motor is adjusted to a first motor rotating speed interval, the rotating speed of the fan is adjusted to a second fan rotating speed interval, the heating wire 60 is adjusted to be in a heating stop state, and the rotating speed in the first fan rotating speed interval is greater than that in the second fan rotating speed interval.

The embodiment does not limit the first motor rotating speed interval and the second motor rotating speed interval as long as the first motor rotating speed interval is smaller than the second motor rotating speed. In addition, the present embodiment does not limit the first fan rotation speed interval and the second fan rotation speed interval, as long as the first fan rotation speed interval is greater than the second fan rotation speed interval.

For example, the first motor may have a rotation speed interval of 40rpm to 60rpm, the second motor may have a rotation speed interval of 60rpm to 75rpm, the first fan may have a rotation speed interval of 1100rpm to 1400rpm, and the second fan may have a rotation speed interval of 700rpm to 1100rpm.

As can be seen from the above description, when the clothes are in the early stage of drying, the motor 30 is at a relatively low rotation speed, and the fan 40 is at a relatively high rotation speed. Therefore, the humidity of the clothes is highest, and the rotating speed of the fan is increased to enable the air circulation speed to be high, so that the hot and dry air can be enabled to flow into the drum 20 more quickly, and the efficiency of drying the clothes is improved; meanwhile, because the humidity of the laundry is the highest, the air driven by the fan 40 can quickly take away the water on the laundry, so that the drum 20 is set to a low rotation speed, on one hand, the drying efficiency is ensured, and at the same time, the energy consumption of the heat pump clothes dryer can be avoided being too high, on the other hand, the air circulation in the drum 20 can be smoother, and then the damp and hot air can be discharged out of the drum 20 more quickly. And, when the clothes are in the early stage of drying, the operation of the heat pump system 50 is in the initial stage, the temperature of the hot and dry air rises slowly, and the heating wire 60 is adjusted to be in the heating state, so that the temperature rising speed can be increased, and the drying efficiency can be improved.

When the clothes are in the middle stage of drying, the motor 30 and the fan 40 are at relatively high rotation speeds. Therefore, the humidity of the clothes is high, water molecules mainly exist at the position where the clothes are contacted, and the speed of air circulation is increased by increasing the rotating speed of the fan, so that the drying efficiency of the clothes is improved; by increasing the rotation speed of the motor, the drum rotates at high speed to shake up the clothes, the clothes are separated, and hot and dry air can be blown between the clothes, so that the positions where the clothes are contacted can be dried, and the efficiency of drying the clothes is improved.

When the clothes are in the later stage of drying, the motor 30 and the fan 40 are both at relatively low rotation speeds. From this, the humidity of clothing is lower, and the hydrone mainly exists on the fibre of clothing, even if send into the higher or the great dry and hot air of wind speed of temperature in the cylinder and also can't dispel the hydrone on the clothing fibre this moment, so through all turning down fan rotational speed and motor rotational speed, be favorable to still can drying the clothing at heat pump system and can also avoid heat pump clothes dryer's energy consumption too high simultaneously. And, when the clothing is in the later stage of drying, the humidity of the clothing has been reduced by a wide margin, the temperature of the dry hot air flowing into the drum 20 from the dry hot air inlet of the drum 20 drops by a wide margin, so that the temperature of the humid hot air discharged from the humid hot air outlet of the drum 20 can be increased significantly, by adjusting the heating wire 60 to a non-heating state, the heating wire 60 does not perform secondary heating on the dry hot air, and further, the temperature of the humid hot air entering the evaporator 53 is reduced, so as to be beneficial to reducing the exhaust temperature of the compressor 51, thereby avoiding the compressor 51 from being started and stopped frequently due to high load operation.

Fig. 4 is a schematic flowchart of another control method of a heat pump clothes dryer according to an embodiment of the present disclosure. Referring to fig. 4, in the above embodiment, when the laundry is in the middle stage of drying, the specific implementation process of adjusting the start-stop state of the heating wire 60 according to the outlet air temperature of the drum 20 includes:

step 201: and acquiring the air outlet temperature of the roller.

Specifically, the air duct further includes a second portion A2 communicating the hot and humid air outlet of the drum 20 with the air inlet of the evaporator 53, and a temperature sensor is disposed at the hot and humid air outlet of the drum 20 or in the second portion A2, and the temperature sensor is configured to detect an air outlet temperature of the drum 20.

Step 202: and if the air outlet temperature is greater than or equal to the first preset temperature, adjusting the heating wire to be in a heating stop state.

Step 203: and if the air outlet temperature is less than or equal to a second preset temperature, adjusting the heating wire to be in a heating state, wherein the second preset temperature is less than the first preset temperature.

For example, the heat pump clothes dryer 100 may compare the outlet air temperature with a first preset temperature, and control the heating wire 60 to stop heating when the outlet air temperature is not less than the first preset temperature; when the outlet air temperature is lower than the first preset temperature, the outlet air temperature is compared with a second preset temperature, and when the outlet air temperature is not higher than the second preset temperature, the heating wire 60 is controlled to heat.

In other embodiments, the heat pump clothes dryer 100 may also compare the outlet air temperature with a second preset temperature, if the outlet air temperature is not greater than the second preset temperature, control the heating wire 60 to heat, if the outlet air temperature is greater than the second preset temperature, compare the outlet air temperature with the first preset temperature, and if the outlet air temperature is not less than the first preset temperature, control the heating wire 60 to stop heating. Of course, the heat pump dryer 100 may also compare the outlet air temperature with the first preset temperature and the second preset temperature at the same time, and then execute step 202 or execute step 203 according to the comparison result.

It is also understood that if the outlet air temperature is between the second preset temperature and the first preset temperature, the heating wire 60 may be in a heating state, or the heating wire 60 may also be in a heating-stopped state, and at this time, the heat pump clothes dryer 100 only depends on the heat pump system 50 to dry the clothes. The first preset temperature and the second preset temperature are not limited, for example, the first preset temperature may be 75 ℃, and the second preset temperature may be 70 ℃.

Through the above arrangement, when the laundry is in the middle-stage drying stage, the air outlet temperature of the drum 20 can be maintained between the second preset temperature and the first preset temperature, so as to prevent the temperature inside the drum 20 from being too high or too low.

In summary, according to the control method of the heat pump clothes dryer provided in the embodiment of the present application, the current moisture content of the clothes in the drum 20 is obtained, the drying stage where the clothes are located can be inferred from the current moisture content, the motor rotation speed, the fan rotation speed and the start/stop state of the heating wire are adjusted according to the drying stage, rather than merely controlling and adjusting the motor rotation speed, the control strategy of the heat pump clothes dryer 100 is not single, which is beneficial to enabling the heat pump clothes dryer 100 to exert the optimal effect, thereby being beneficial to avoiding too high energy consumption when improving the efficiency of the heat pump clothes dryer 100.

It should be understood that, although the above method embodiments are exemplified by taking the heat pump dryer 100 as an example, the above method embodiments may also be implemented by a control apparatus capable of controlling the heat pump dryer. When implemented by the control device, the control device may perform the above processing based on the obtained current moisture content of the laundry, and control the heat pump dryer 100 to adjust corresponding parameters, which is not described in detail herein.

Fig. 5 is a schematic structural diagram of a control apparatus of a heat pump dryer in an embodiment of the present application, and as shown in fig. 5, the control apparatus 200 of the heat pump dryer in the embodiment of the present application includes:

an obtaining module 201 for obtaining a current moisture content of the laundry in the drum 20 of the heat pump dryer 100;

a determining module 202, configured to determine a drying stage of the laundry according to the current moisture content, where the drying stage includes an early stage drying stage, a middle stage drying stage, and a later stage drying stage;

and the processing module 203 is configured to adjust working parameters of the heat pump clothes dryer 100 according to the drying stage, where the working parameters include a motor rotation speed, a fan rotation speed, and a start-stop state of the heating wire 60 in the air duct.

Optionally, the determining module 202 is specifically configured to obtain a first preset water content and a second preset water content, where the first preset water content is greater than the second preset water content; and determining the drying stage of the clothes according to the current moisture content, the first preset moisture content and the second preset moisture content.

Optionally, the determining module 202 is specifically configured to determine that the drying stage of the laundry is the early stage drying stage when the current moisture content is greater than or equal to a first preset moisture content; when the current water content is between the first preset water content and the second preset water content, determining that the drying stage of the clothes is a middle-stage drying stage; and when the current water content is less than or equal to the second preset water content, determining that the drying stage of the clothes is a later stage clothes dryer stage.

Optionally, the processing module 203 is specifically configured to, when the clothes are in the early stage of drying, adjust the motor rotation speed to a first motor rotation speed interval, adjust the fan rotation speed to a first fan rotation speed interval, and adjust the heating wire 60 to the heating state.

Optionally, the processing module 203 is specifically configured to, when the laundry is in the middle-stage laundry drying stage, adjust the motor rotation speed to a second motor rotation speed interval, adjust the fan rotation speed to a first fan rotation speed interval, and adjust the start-stop state of the heating wire 60 according to the outlet air temperature of the drum 20, where the rotation speed in the second motor rotation speed interval is greater than the rotation speed in the first motor rotation speed interval.

Optionally, the processing module 203 is specifically configured to, when the clothes are in the later stage of the clothes dryer, adjust the motor rotation speed to a first motor rotation speed interval, adjust the fan rotation speed to a second fan rotation speed interval, and adjust the heating wire 60 to a heating stop state, where the rotation speed in the first fan rotation speed interval is greater than the rotation speed in the second fan rotation speed interval.

Optionally, the processing module 203 is specifically configured to obtain an outlet air temperature of the drum 20; if the outlet air temperature is greater than or equal to the first preset temperature, the heating wire 60 is adjusted to a heating stop state; if the outlet air temperature is less than or equal to the second preset temperature, the heating wire 60 is adjusted to be in a heating state, and the second preset temperature is less than the first preset temperature.

The control device 200 of the heat pump clothes dryer provided by the embodiment is connected according to the method shown in fig. 5. The relevant description may be understood by referring to the relevant description and effect corresponding to the steps in the embodiment corresponding to fig. 3 and fig. 4, and redundant description is not repeated here.

Fig. 6 is a schematic diagram of a control apparatus of a heat pump clothes dryer in an embodiment of the present application. As shown in fig. 6, the present embodiment provides a control apparatus of a heat pump dryer including: at least one processor 302 and a memory 301 communicatively coupled to the at least one processor 302. The memory 301 stores instructions executable by the at least one processor 302, and the instructions are executed by the at least one processor 302 to implement the control method of the heat pump clothes dryer in this embodiment. The control apparatus of the heat pump dryer may further include an input/output interface 303. The input/output interface 303 may include a separate output interface and input interface, or may be an integrated interface that integrates input and output. The output interface is used for outputting data, and the input interface is used for acquiring input data.

Illustratively, the control device of the heat pump dryer may be, for example, a server capable of controlling the heat pump dryer 100, or may be a terminal device capable of controlling the heat pump dryer 100.

Fig. 7 is a rear view of the heat pump dryer provided in the embodiment of the present application, and fig. 8 is a perspective view schematically illustrating the heat pump dryer provided in the embodiment of the present application. With reference to fig. 2, 7 and 8, an embodiment of the present application provides a heat pump clothes dryer 100, where the heat pump clothes dryer 100 includes a cabinet 10, a drum 20, a motor 30, a fan 40, an air duct and a heat pump system 50, the motor 30 is in transmission connection with the drum 20 to drive the drum 20 to rotate in the cabinet 10, a dry hot air inlet is provided at a bottom of the drum 20, a wet hot air outlet is provided at a mouth of the drum 20, the air duct is communicated with the drum 20, the fan 40 is used to drive air to circulate in the air duct and the drum 20, and the heat pump system 50 is used to dry clothes in the drum 20.

The heat pump system 50 may be disposed at any position of the outer circumference of the drum 20, and considering that the heat pump system 50 is heavy, the heat pump system 50 may be disposed at the bottom of the drum 20 to prevent the heat pump system 50 from falling due to loose support.

In fig. 2, the air duct includes a first portion A1, a second portion A2 and a third portion A3, the first portion A1 communicates an air outlet of the condenser 52 with a dry hot air inlet of the drum 20, the second portion A2 communicates a wet hot air outlet of the drum 20 with an air inlet of the evaporator 53, and the third portion A3 communicates an air outlet of the evaporator 53 with an air inlet of the condenser 52. As can be seen from the above description, the first section A1, the dry hot air inlet of the drum 20, the inside of the drum 20, the wet hot air outlet of the drum 20, the second section A2 and the third section A3 are sequentially communicated.

The heat pump clothes dryer 100 further includes a heater 60, a detecting device and at least one processor, the heater 60 is disposed in the first portion A1 of the air duct and supplies power to the heater 60 through a circuit, and the hot and dry air discharged from the air outlet of the condenser 52 can be secondarily heated while passing through the heater 60; the detection device is used for obtaining the current moisture content of the clothes in the drum 20, and the processor is used for determining the drying stage of the clothes according to the current moisture content detected by the detection device, and adjusting the working parameters of the heat pump clothes dryer 100 according to the drying stage, wherein the drying stage comprises a previous stage drying stage, a middle stage drying stage and a later stage drying stage, and the working parameters comprise the motor rotating speed, the fan rotating speed and the starting and stopping states of the heating wire 60.

With such a configuration, the heat pump clothes dryer 100 can cooperatively control the motor 30, the fan 40 and the heating wire 60 according to the moisture content of the clothes, so that the operation states of the motor 30, the fan 40 and the heating wire 60 are all adapted to the moisture content of the clothes, which is beneficial to the heat pump clothes dryer 100 to exert the best effect, and the heat pump clothes dryer 100 has higher drying efficiency and lower energy consumption.

Specifically, the heat pump clothes dryer 100 further includes a fire protection plate 80, the fire protection plate 80 is connected with the cabinet 10 and jointly encloses an installation space capable of being communicated with the first portion A1, the heating wire 60 is located in the installation space, and the heating wire 60 is fixed on the fire protection plate 80. That is, the fire guard 80 is provided at the first portion A1 and is coupled to the cabinet 10, and the heating wire 60 is fixed to the fire guard 80. Thus, the fireproof protection plate 80 can play a role in protection, and is beneficial to separating sparks from the box body 10 when the heating wire 60 is overheated to form sparks, so that the box body 10 is prevented from being heated and damaged due to the sparks.

In a first achievable form, the first portion A1 of the duct may be located within the housing 10. Specifically, the heat pump dryer 100 may further include an air deflector disposed in the cabinet 10, and the air deflector is connected to the cabinet 10 and jointly encloses the first portion A1. In this example, a fire guard 80 is also provided within the enclosure 10 and is connected to the inside of the enclosure 10.

In a second realisable way, as shown in figures 7 and 8, the first portion A1 comprises a first section inside the tank 10 and a second section outside the tank 10, in series. In this example, a fire guard 80 may be provided within the second section and attached to the outside of the enclosure 10.

Specifically, an air inlet opposite to a dry hot air inlet of the drum 20 is formed in a rear side plate 11 of the cabinet 10, the fan 40 is disposed on the rear side plate 11, the heat pump clothes dryer 100 includes a ventilation cover 70, the ventilation cover 70 is covered on the rear side plate 11, and the ventilation cover 70 and the rear side plate 11 jointly define a communication air duct for communicating the air inlet and a fan outlet of the fan 40. The communicating duct is a second section, and correspondingly, a first section of the first portion A1 is formed between the air outlet of the condenser 52 and the blower inlet of the blower 40.

When the heat pump clothes dryer 100 is operated, the fan 40 drives the hot and dry air flowing out from the air outlet of the condenser 52 to flow into the ventilation housing 70 from the fan outlet, and then to flow into the air inlet of the cabinet 10 from the ventilation housing 70, during which the hot and dry air is heated by the heating wire 60, so that the temperature of the hot and dry air is raised, and then the raised air flows into the drum 20 from the hot and dry air inlet of the drum 20.

In a second implementation, the heating wire 60 is located outside the tank 10, so that when the temperature of the heating wire 60 is high, it is beneficial to avoid the high temperature from affecting the performance of the heat pump system 50 disposed in the tank 10.

It is further noted that the number of heating wires 60 is not limiting. For example, the heating wire 60 may be one or more. When the heating wire 60 is plural, the plural heating wires 60 are fixed on the fire-proof guard plate 80. By increasing the number of the heating wires 60, the amount of heat conducted from the heating wires 60 to the air is increased, so that the dry hot air flowing through the heating wires 60 can be heated more quickly.

Fig. 9 is a schematic perspective view of the connection of the fire protection shield and the heating wire in the embodiment of the present application. In the example shown in fig. 9, the fire guard 80 includes a first surrounding wall 81, a third surrounding wall 83, and a second surrounding wall 82 located between the first surrounding wall 81 and the third surrounding wall 83, the second surrounding wall 82 is vertically connected to the first surrounding wall 81 and the third surrounding wall 83, and both the first surrounding wall 81 and the third surrounding wall 83 are connected to the rear side plate 11 of the box 10. When the fire guard 80 is mounted on the housing 10, the second surrounding wall 82 is parallel to the rear side panel 11 of the housing 10.

With continued reference to fig. 9, an end of the first surrounding wall 81 away from the second surrounding wall 82 may be convexly provided with a first connecting edge 810 facing the third surrounding wall 83, an end of the third surrounding wall 83 away from the second surrounding wall 82 may be convexly provided with a second connecting edge 830 facing the first surrounding wall 81, and both the first connecting edge 810 and the second connecting edge 830 are connected to the rear side plate 11. By forming the first connecting edge 810 and the second connecting edge 830, the fire guard 80 can be more easily connected to the rear side plate 11, and the installation of the fire guard 80 is more convenient.

The connection manner of the first connecting edge 810 and the second connecting edge 830 to the box 10 is not limited. Preferably, the first connecting edge 810 and the second connecting edge 830 are detachably connected to the rear side plate 11 of the cabinet 10, so that the fire protection plate 80 can be detached from the cabinet 10, thereby facilitating maintenance of the heat pump clothes dryer 100. For example, the first connecting edge 810 is provided with a connecting through hole, the rear side plate 11 is provided with a screw hole, the screw hole is opposite to the connecting through hole, and the screw member is threaded with the screw hole after passing through the connecting through hole.

The fire shield 80 and the heating wire 60 may be disposed at any position of the second section, which is not limited in this embodiment. Preferably, the fire guard 80 may be disposed within the ventilation enclosure 70 proximate to the fan outlet, i.e., at the connection between the fan 40 and the ventilation enclosure 70. In this way, the heating wire 60 is also close to the outlet of the blower, so that the dry hot air flowing out from the outlet of the blower can flow through the heating wire 60, so that as much dry hot air as possible can be heated secondarily.

Further, a lower guide plate 821 is convexly arranged at the lower end of the second surrounding wall 82 downwards, the lower guide plate 821 extends obliquely, and the distance between the lower guide plate 821 and the rear side plate 11 gradually increases from bottom to top. So set up, when fire prevention backplate 80 sets up near the fan export, can make down guide plate 821 and fan export contact, lower guide plate 821 can guide the dry and hot air that flows out from the fan export and get into in the ventilation housing 70.

Further, the upper end of the second surrounding wall 82 protrudes upward to form an upper guide plate 820, the upper guide plate 820 extends obliquely, and the distance between the upper guide plate 820 and the rear side plate 11 gradually increases from bottom to top. By providing the upper deflector 820, the upper deflector 820 can guide the air flowing through the heating wires 60 to flow out of the installation space and to the air inlet. It should be noted that there is some clearance between the second enclosure wall 82 and the ventilation hood 70.

In the above embodiment, the fire-protection plate 80 may be a metal plate, such as a steel plate or a galvanized plate, and the fire-protection plate 80 may also be a plate coated with a fire-protection coating, which is not limited in this embodiment.

An embodiment of the present application provides a computer-readable storage medium having stored therein execution instructions, which, when executed by at least one processor 302 of a control apparatus of a heat pump dryer, when the computer execution instructions are executed by the processor 302, implement the control method of the heat pump dryer in the above-described embodiment.

The computer readable storage medium may be, among others, ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

The present application provides a computer program product comprising a computer program executed by a processor 302 to implement the control method of the heat pump dryer provided in any one of the embodiments corresponding to fig. 3 and 4 of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

In addition, each functional module in the embodiments of the present application may be integrated into one processing module 203, or each module may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.

It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present application can be achieved.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A control method of a heat pump clothes dryer, characterized by comprising:

acquiring the current moisture content of the clothes in the drum of the heat pump clothes dryer;

determining a drying stage of the clothes according to the current moisture content, wherein the drying stage comprises an early stage clothes drying stage, a middle stage clothes drying stage and a later stage clothes drying stage;

and adjusting working parameters of the heat pump clothes dryer according to the drying stage, wherein the working parameters comprise the rotating speed of a motor, the rotating speed of a fan and the starting and stopping states of a heating wire in an air duct.

2. The control method according to claim 1, wherein the determining the drying stage of the laundry according to the current moisture content specifically comprises:

acquiring a first preset water content and a second preset water content, wherein the first preset water content is greater than the second preset water content;

and determining the drying stage of the clothes according to the current moisture content, the first preset moisture content and the second preset moisture content.

3. The control method according to claim 2, wherein the determining the drying stage of the laundry according to the current moisture content, the first preset moisture content and the second preset moisture content comprises:

when the current water content is larger than or equal to the first preset water content, determining that the drying stage of the clothes is an early stage clothes drying stage;

4. The control method according to claim 1, wherein said adjusting operating parameters of the heat pump dryer according to the drying phase specifically comprises:

when the clothes are in the early clothes drying stage, adjusting the rotating speed of the motor to a first motor rotating speed interval, adjusting the rotating speed of the fan to a first fan rotating speed interval, and adjusting the heating wire to a heating state;

when the clothes are in a middle-stage clothes drying stage, the rotating speed of the motor is adjusted to a second motor rotating speed interval, the rotating speed of the fan is adjusted to a first fan rotating speed interval, the starting and stopping state of the heating wire is adjusted according to the outlet air temperature of the roller, and the rotating speed in the second motor rotating speed interval is larger than that in the first motor rotating speed interval;

5. The control method according to claim 4, wherein the adjusting of the start-stop state of the heating wire according to the outlet air temperature of the drum specifically comprises:

acquiring the air outlet temperature of the roller;

if the air outlet temperature is greater than or equal to a first preset temperature, adjusting the heating wire to be in a heating stop state;

and if the air outlet temperature is less than or equal to a second preset temperature, adjusting the heating wire to be in a heating state, wherein the second preset temperature is less than the first preset temperature.

6. A control device of a heat pump clothes dryer, characterized by comprising:

the obtaining module is used for obtaining the current water content of the clothes in the drum of the heat pump clothes dryer;

7. A control apparatus of a heat pump dryer, characterized by comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method of any one of claims 1-5.

8. A heat pump clothes dryer, characterized by comprising: the device comprises a box body, a roller, an air duct, a condenser, a fan, a motor, a heating wire, a fireproof guard plate, a detection device and at least one processor;

the drum is rotatably arranged in the box body and is provided with a dry hot air inlet;

the air duct comprises a first part which is communicated with an air outlet of the condenser and a dry hot air inlet of the roller, and the fan is used for driving air to flow in the air duct and the roller;

the fireproof protection plate is connected with the box body and jointly forms an installation space capable of being communicated with the first part, the heating wire is located in the installation space, and the heating wire is fixed on the fireproof protection plate;

the detection device is used for acquiring the current moisture content of the clothes in the drum;

9. The heat pump clothes dryer of claim 8, wherein an air inlet opposite to the dry hot air inlet is formed in a rear side plate of the cabinet, and the fan is arranged on the rear side plate;

the heat pump clothes dryer comprises a ventilation cover shell, the ventilation cover shell is covered on the rear side plate, and the ventilation cover shell and the rear side plate jointly define a communication air channel for communicating the air inlet with a fan outlet of the fan;

the fire protection board sets up in the intercommunication wind channel, the fire protection board includes first leg, third leg and is located second leg between first leg and the third leg, the second leg with first leg and third leg are perpendicular to be connected, first leg and third leg all with the posterior lateral plate is connected.

10. The heat pump clothes dryer according to claim 9, wherein an upper baffle protrudes upward from an upper end of the second enclosure wall, the upper baffle extends obliquely, and a distance between the upper baffle and the rear side plate increases gradually from bottom to top;

the lower end of the second surrounding wall protrudes downwards to form a lower guide plate, the lower guide plate extends obliquely, and the distance between the lower guide plate and the rear side plate is gradually increased from bottom to top.

11. The heat pump clothes dryer of claim 9, wherein an end of the first surrounding wall facing away from the second surrounding wall is convexly provided with a first connecting edge facing the third surrounding wall, an end of the third surrounding wall facing away from the second surrounding wall is convexly provided with a second connecting edge facing the first surrounding wall, and the first connecting edge and the second connecting edge are both connected with the rear side plate.

12. A computer-readable storage medium having computer-executable instructions stored therein, which when executed by a processor, are configured to implement the method of any one of claims 1-5.

13. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the method according to any one of claims 1-5.