Control Method, Device, Controller and Clothing Treatment Device of Clothing Treatment Equipment

Abstract

The present invention relates to the technical field of household appliances, and particularly relates to a control method, device, controller and laundry treatment device for a laundry treatment device. The control method of the laundry treatment device includes: when the laundry treatment device is in a drying mode, during the entire drying cycle, controlling the electric heating amount of the electric heating module of the laundry treatment device to be greater than the heating amount of the heat pump system; obtaining the exhaust gas temperature of the heat pump system, and comparing the exhaust gas temperature with the first safety temperature value of the heat pump system; according to the exhaust gas temperature being greater than the first safety temperature value, adjusting the states of the electric heating module and / or the heat pump system until the exhaust gas temperature is not greater than the first safety temperature value. In the laundry treatment device of the present invention, the electric heating amount of the electric heating module is set to be greater than the heating amount of the heat pump system, thereby reducing the cost of the entire drying system. At the same time, the influence of the increase in the electric heating amount on the exhaust gas temperature of the heat pump system is taken into account, and the phenomenon of the heat pump system malfunctioning due to the increase in the exhaust gas temperature is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly relates to a control method, device, controller and clothing treatment device for a clothing treatment device. Background Art

[0002] What is provided in this part is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] The drying duration required for a clothing treatment device to dry clothes depends on the heating power of the clothing treatment device. Increasing the heating power of the clothing treatment device helps to shorten the drying duration to a great extent. At present, there are three heating and drying methods for clothing treatment devices with a drying function: 1) an electric heating drying method; 2) a heating and drying method using a heat pump system (including a compressor and a heat exchange device); 3) a drying method using a heat pump as the main drying heat source and combining electric heating as an auxiliary drying heat source.

[0004] In order to shorten the drying duration, if only the heat pump system is used to dry clothes, it will lead to an increase in cost, which is difficult for users to accept. And if only the electric heating method is used to dry clothes, the drying duration required to dry clothes has reached the limit and cannot be further shortened. Therefore, existing clothing treatment devices generally adopt a drying method using a heat pump as the main drying heat source and combining electric heating as an auxiliary drying heat source.

[0005] As Figure 1 shown, the clothing treatment device 100' adopts a drying method using the heat pump 10' as the main drying heat source and combining the electric heating 20' as the auxiliary drying heat source. The heating power of the heat pump 10' is dominant (the proportion of the heating power > 50%, usually reaching more than 70%), and the electric heating 20' is used as the auxiliary heat source (the proportion of the electric heating power < 50%, usually less than 30%). The proportion of the electric heating power cannot be too high mainly due to the exhaust temperature of the heat pump 10'. If the electric heating power provided by the electric heating 20' is too high, it will cause the exhaust temperature of the heat pump 10' to increase, and the increase in the exhaust temperature will cause the heat pump 10' to have a shutdown failure.

[0006] Currently, in order to reduce the phenomenon that the heat pump 10' has a shutdown failure due to the increase in the exhaust temperature, the prior art generally uses a cooling fan 30' to cool the heat pump 10', and this cooling method increases the equipment cost and the structural complexity of the drying system to a certain extent. Summary of the Invention

[0007] The present invention aims to at least solve the technical problem that a clothing treatment device cannot balance the drying cost and the drying duration to a certain extent.

[0008] To achieve the above object, a first aspect of the present invention provides a control method for a laundry treatment device. The control method includes: when the laundry treatment device is in the drying mode, during the entire drying cycle, controlling the electric heating amount of the electric heating module of the laundry treatment device to be greater than the heating amount of the heat pump system of the laundry treatment device; obtaining the exhaust temperature of the heat pump system, and comparing the exhaust temperature with the first safety temperature value of the heat pump system; according to the exhaust temperature being greater than the first safety temperature value, adjusting the states of the electric heating module and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value.

[0009] In the laundry treatment device of the present invention, the electric heating amount of the electric heating module is set to be greater than the heating amount of the heat pump system. The burden on the heat pump system is reduced, and a low-displacement heat pump system can be used, thereby reducing the cost of the entire drying system. At the same time, the influence of the increased electric heating amount on the exhaust temperature of the heat pump system is taken into account, and the phenomenon of the heat pump system malfunctioning due to the increased exhaust temperature is reduced.

[0010] In addition, the control method for the laundry treatment device according to the present invention may further have the following additional technical features:

[0011] According to an embodiment of the present invention, according to the exhaust temperature being greater than the first safety temperature value, adjusting the states of the electric heating module and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value includes: controlling the electric heating module to be turned off until the exhaust temperature is not greater than the second safety temperature value; controlling the electric heating module to be turned on again and the electric heating power of the electric heating module to be greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0012] According to an embodiment of the present invention, according to the exhaust temperature being greater than the first safety temperature value, adjusting the states of the electric heating module and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value includes: controlling the electric heating power of the electric heating module to gradually decrease until the exhaust temperature is not greater than the second safety temperature value; controlling the electric heating power of the electric heating module to gradually increase until the electric heating power of the electric heating module is greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0013] According to an embodiment of the present invention, the control method further includes: calculating the cumulative working duration of the electric heating module according to the required heat of the drying mode and the electric heating power of the electric heating module; controlling the electric heating module to continuously work for the cumulative working duration until the drying mode ends.

[0014] According to an embodiment of the present invention, the control method further includes: calculating the cumulative working duration of the electric heating module according to the required heat of the drying mode and the electric heating power of the electric heating module; controlling the electric heating module to work in an intermittent working mode or a PID control mode in combination with the exhaust temperature of the heat pump system for the cumulative working duration.

[0015] According to an embodiment of the present invention, adjusting the state of the electric heating module and / or the heat pump system until the exhaust gas temperature is not greater than the first safety temperature value according to the exhaust gas temperature being greater than the first safety temperature value further includes: controlling the power of the compressor of the heat pump system to gradually decrease until the exhaust gas temperature is not greater than the second safety temperature value; controlling the power of the compressor of the heat pump system to gradually recover to the normal power value, where the second safety temperature value is less than the first safety temperature value.

[0016] A second aspect of the present invention further provides a control device for a laundry treatment device. The control device is used to execute the control method for the laundry treatment device in the first aspect of the present invention. The control device includes: a control module, configured to control the electric heating amount of the electric heating module of the laundry treatment device to be greater than the heating amount of the heat pump system of the laundry treatment device during the entire drying cycle according to the laundry treatment device being in the drying mode; a comparison module, configured to obtain the exhaust gas temperature of the heat pump system and compare the exhaust gas temperature with the first safety temperature value of the heat pump system; the control module is further configured to adjust the state of the electric heating module and / or the heat pump system until the exhaust gas temperature is not greater than the first safety temperature value according to the exhaust gas temperature being greater than the first safety temperature value.

[0017] A third aspect of the present invention further provides a controller. The controller includes a memory and a control device according to the second aspect of the present invention. Instructions are stored in the memory, and when the control device executes the instructions, the control method for the laundry treatment device in the first aspect of the present invention is implemented.

[0018] A fourth aspect of the present invention further provides a laundry treatment device. The laundry treatment device includes: a drying drum for accommodating laundry; a heat pump system, the heat pump system includes a compressor and a heat exchange device, and the heat exchange device is communicated with the heating air duct of the drying drum; an electric heating module, the electric heating module is arranged in the heating air duct of the drying drum; a temperature sensor, arranged on the exhaust side of the compressor, configured to monitor the exhaust gas temperature of the compressor and send the monitored exhaust gas temperature to the controller, and the controller is the controller according to the third aspect of the present invention.

[0019] According to an embodiment of the present invention, the displacement of the compressor is not greater than 8.2 cc, and the electric heating power threshold of the electric heating module is 300 W - 1600 W.

[0020] According to an embodiment of the present invention, the heat pump system further includes a mounting seat, the compressor is arranged on the mounting seat, and a cooling fan for the compressor is not arranged on the mounting seat. Description of the Drawings

[0021] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a laundry treatment device in the prior art;

[0023] Figure 2 is a schematic structural diagram of a dryer according to an embodiment of the present invention;

[0024] Figure 3 is a block diagram of the structure of a controller according to an embodiment of the present invention;

[0025] Figure 4 is a flowchart of a control method for a laundry treatment device according to an embodiment of the present invention;

[0026] Figure 5 is a flowchart of a control method for a laundry treatment device according to the first embodiment of the present invention;

[0027] Figure 6 is a flowchart of a control method for a laundry treatment device according to the second embodiment of the present invention;

[0028] Figure 7 is a block diagram of the structure of a control device for a laundry treatment device according to an embodiment of the present invention.

[0029] Among them, the reference numerals are as follows:

[0030] 100’, laundry treatment device; 10’, heat pump; 20’, electric heating; 30’, cooling fan;

[0031] 100, dryer; 101, drying drum; 102, heating air duct; 103, fan;

[0032] 10, electric heating module;

[0033] 21, compressor; 22, condenser; 23, evaporator; 24, throttling device; 25, temperature sensor;

[0034] 30, controller; 310, memory; 320, control device;

[0035] 320, control device; 321, control module; 322, comparison module. Detailed Embodiments

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that the control method of the clothing treatment device of the present invention is not only limited to the clothes dryer for drying clothes, but also applicable to other clothing treatment devices such as a washing and drying integrated machine, and such an adjustment belongs to the protection scope of the control method of the clothing treatment device of the present invention.

[0037] As Figure 2 and Figure 3 shown, in order to clearly describe the control method, device, controller and clothing treatment device of the clothing treatment device provided by the present invention, the following will first be elaborated in detail through the clothing treatment device provided by the fourth aspect of the present invention. According to the embodiments of the fourth aspect of the present invention, in order to facilitate the elaboration of the technical solutions and technical effects provided by the present invention, the clothing treatment device will be described below by taking the clothes dryer 100 as an example. The clothes dryer 100 mainly includes a drying drum 101, a heating air duct 102, a blower 103, an electric heating module 10, a heat pump system, a temperature sensor 25 and a controller 30. Among them, the heat pump system includes a compressor 21, a condenser 22, an evaporator 23 and a throttling device 24. The temperature sensor 25 is arranged on the exhaust side of the compressor 21. The drying drum 101 is used to accommodate clothes and rotate under the drive of a motor (not shown in the figure). The electric heating module 10 and the heat pump system are used to introduce hot air into the drying drum 101 after being turned on. The blower 103 is communicated with the heating air duct 102 of the drying drum 101 and is used to blow the hot air into the drying drum 101 after being turned on. The temperature sensor 25 is used to monitor the exhaust temperature in the heat pump system and send the monitored exhaust temperature to the controller 30. The controller 30 controls the working modes of the electric heating module 10 and the heat pump system according to the exhaust temperature in the heat pump system. Among them, the controller 30 is the controller 30 as described in the third aspect of the present invention. The controller 30 includes a memory 310 and a control device 320. Instructions are stored in the memory 310. When the control device executes the instructions, the control method of the clothing treatment device as described in the first aspect of the present invention can be realized.

[0038] The laundry treatment device of the present invention is configured to set the electric heating amount of the electric heating module 10 to be greater than the heating amount of the heat pump system throughout the drying cycle, thereby reducing the cost of the entire drying system. At the same time, it takes into account the impact of the increased electric heating amount on the exhaust temperature of the heat pump system, and reduces the phenomenon of the heat pump system malfunctioning due to the increased exhaust temperature. In addition, the laundry treatment device provided by the embodiments of the present application does not require a cooling fan to be provided at the compressor 21 of the heat pump system, and there is no need for the cooling fan to cool the compressor 21, thereby reducing the phenomenon that the cooling fan increases the equipment cost and the structural complexity of the drying system. Specifically, the heat pump system further includes a mounting base (not shown in the figure), and the compressor 21, the condenser 22, the evaporator 23, and the throttling device 24 are all arranged on the mounting base, and there is no cooling fan for the compressor 21 on the mounting base. For the heat pump system proposed by the embodiments of the present application, firstly, by reducing the displacement of the compressor 21, the space occupied by the compressor 21 and the entire heat pump system is reduced; secondly, by removing the cooling fan of the compressor 21, the volume of the entire heat pump system and the space occupied by the dryer 100 are reduced.

[0039] Further, at the position of the compressor 21 on the mounting base, there is a switchable heat dissipation hole (not shown in the figure), and a switchable heat dissipation plate (not shown in the figure) is provided at the heat dissipation hole. The heat dissipation hole is in a closed state when the laundry treatment device is operating normally. When the exhaust temperature of the compressor 21 is greater than the first safety temperature, the heat dissipation effect of the compressor 21 can be improved by opening the heat dissipation hole.

[0040] In order to achieve the effect that the electric heating power of the electric heating module 10 is greater than the heating power of the heat pump system, according to the embodiments of the present application, the displacement of the compressor 21 is not greater than 8.2 cc, and the electric heating power threshold of the electric heating module 10 is 300 W - 1600 W. It should be noted that setting the displacement of the compressor 21 to be not greater than 8.2 cc and setting the electric heating power threshold of the electric heating module 10 to 300 W - 1600 W are only preferred embodiments for achieving the effect that the electric heating power is greater than the heating power of the heat pump system, and are not limitations on the displacement of the compressor 21 and the electric heating power threshold of the electric heating module 10. On the premise of satisfying that the electric heating power is greater than the heating power of the heat pump system, the displacement of the compressor 21 can also be set to other appropriate displacements, and the electric heating power threshold of the electric heating module 10 can be set to other appropriate power thresholds. Such adjustments belong to the protection scope of the embodiments of the present application.

[0041] That is to say, the embodiments of the present application adopt a high-power electric heating module 10, and the electric heating module 10 is installed in the heating air duct 102 of the clothes dryer 100. The electric heating module 10 can adopt a honeycomb structure or be laid flat around the inner wall of the heating air duct 102 to improve the heating efficiency of the electric heating module 10. In addition, in order to reduce the influence of the electric heating module 10 on the compressor 21, the embodiments of the present application also propose to set the electric heating module 10 at a position in the heating air duct 102 far from the compressor 21, and the heating air duct 102 is provided with heat dissipation holes (not shown in the figure) located between the electric heating module 10 and the compressor 21. When the exhaust temperature of the compressor 21 is too high, the electric heating module 10 can be dissipated by opening the heat dissipation holes, so as to reduce the influence of the heat generated by the electric heating module 10 on the compressor 21.

[0042] Next, the instructions stored in the memory will be introduced in detail through a control method of a clothes processing device according to the first aspect of the present invention.

[0043] As Figure 4 And in combination with Figure 2 As shown, according to the embodiments of the first aspect of the present invention, the first aspect of the present invention provides a control method of a clothes processing device. The control method includes: S410, according to the clothes processing device being in the drying mode, controlling the electric heating amount of the electric heating module 10 of the clothes processing device to be greater than the heating amount of the heat pump system of the clothes processing device; S420, obtaining the exhaust temperature of the heat pump system and comparing the exhaust temperature with the first safety temperature value of the heat pump system; S430, according to the exhaust temperature being greater than the first safety temperature value, adjusting the states of the electric heating module 10 and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value.

[0044] In this embodiment, the clothes processing device of the present invention is used to set the electric heating amount of the electric heating module 10 to be greater than the heating amount of the heat pump system, so as to reduce the cost of the entire drying system. At the same time, it takes into account the influence of the increase in the electric heating amount on the exhaust temperature of the heat pump system and reduces the phenomenon that the heat pump system fails due to the increase in the exhaust temperature.

[0045] According to an embodiment of the present invention, step S430 specifically includes: controlling the electric heating module 10 to be turned off until the exhaust temperature is not greater than the second safety temperature value; controlling the electric heating module 10 to be restarted and the electric heating power of the electric heating module 10 to be greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0046] In this embodiment, as Figure 5 And in combination with Figure 2As shown, the control method of the laundry treatment device performs the following steps: S502. The dryer 100 turns on the drying mode and the blower 103 operates; S504. The electric heating module 10 operates at high power and the heat pump system operates at low power; S506. Determine whether the exhaust temperature of the heat pump system is greater than the first safety temperature value; when the exhaust temperature is not greater than the first safety temperature value, continue to execute step S504, and when the exhaust temperature is greater than the first safety temperature value, execute step S508. The electric heating module 10 stops operating and the heat pump system operates at low power; S510. Determine whether the exhaust temperature of the heat pump system is greater than the second safety temperature value; when the exhaust temperature is greater than the second safety temperature value, continue to execute step S508, and when the exhaust temperature is not greater than the second safety temperature value, execute step S512. Control the electric heating module 10 to restart and the electric heating power of the electric heating module 10 is greater than the heating power of the heat pump system.

[0047] In the embodiment of the present application, the exhaust temperature of the heat pump system is reduced by controlling the electric heating module 10 to stop operating, so that the exhaust temperature of the heat pump system is controlled within the safe temperature range. This embodiment can achieve the effect of quickly cooling the heat pump system, thereby reducing the phenomenon that the heat pump system is damaged due to high temperature. At the same time, the heat pump system is always in operation to dry the clothes, thereby shortening the total drying time of the drying system.

[0048] According to an embodiment of the present invention, step S430 specifically includes: controlling the electric heating power of the electric heating module 10 to gradually decrease until the exhaust temperature is not greater than the second safety temperature value; controlling the electric heating power of the electric heating module 10 to gradually increase until the electric heating power of the electric heating module 10 is greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0049] In this embodiment, as Figure 6 and in combination with Figure 2 As shown, the control method of the laundry treatment device performs the following steps: S602. The dryer 100 turns on the drying mode and the blower 103 operates; S604. The electric heating module 10 operates at high power and the heat pump system operates at low power; S606. Determine whether the exhaust temperature of the heat pump system is greater than the first safety temperature value; when the exhaust temperature is not greater than the first safety temperature value, continue to execute step S604, and when the exhaust temperature is greater than the first safety temperature value, execute step S608. Control the electric heating power of the electric heating module 10 to gradually decrease and the heat pump system operates at low power; S610. Determine whether the exhaust temperature of the heat pump system is greater than the second safety temperature value; when the exhaust temperature is greater than the second safety temperature value, continue to execute step S608, and when the exhaust temperature is not greater than the second safety temperature value, execute step S612. Control the electric heating power of the electric heating module 10 to gradually increase until the electric heating power of the electric heating module 10 is greater than the heating power of the heat pump system.

[0050] Embodiments of the present application reduce the exhaust temperature of the heat pump system by reducing the operating power of the electric heating module 10, thereby controlling the exhaust temperature of the heat pump system within a safe temperature range. In this drying mode, the electric heating module 10 and the heat pump system are always in operation to dry the clothes, thereby shortening the total drying time of the drying system. Additionally, the negative impacts caused by frequent start and stop of the electric heating module 10 can be reduced.

[0051] According to an embodiment of the present invention, step S430 further includes: controlling the power of the compressor 21 of the heat pump system to gradually decrease until the exhaust temperature is not greater than the second safety temperature value; controlling the power of the compressor 21 of the heat pump system to gradually recover to the normal power value, wherein the second safety temperature value is less than the first safety temperature value.

[0052] In this embodiment, by reducing the power of the compressor 21, the exhaust temperature of the compressor 21 can be rapidly decreased until the exhaust temperature of the compressor 21 is less than the set second safety temperature value, thereby reducing the phenomenon that the heat pump system is damaged due to excessive exhaust temperature. Further, controlling the operating power of the compressor 21 and controlling the state of the electric heating module 10 are carried out simultaneously, thereby accelerating the cooling rate of the heat pump system, reducing the downtime of the electric heating module 10, enabling the electric heating module 10 to quickly return to the normal working mode, and thereby reducing the total drying time of the drying mode.

[0053] According to an embodiment of the present invention, the control method of the laundry treatment device further includes: calculating the cumulative working duration of the electric heating module 10 according to the required heat of the drying mode and the electric heating power of the electric heating module 10; controlling the electric heating module 10 to continuously work for the cumulative working duration until the drying mode ends.

[0054] In this embodiment, when the electric heating power of the electric heating module 10 is small, such as when the electric heating power of the electric heating module 10 is less than 1000W, continuously working the electric heating module 10 will not damage the electric heating module 10. At this time, controlling the electric heating module 10 to continuously work for the cumulative working duration until the drying mode ends, the working time of this heating mode is relatively long. However, it has high safety and reliability and can reduce the negative impacts caused by frequent start and stop of the electric heating module 10.

[0055] According to an embodiment of the present invention, calculate the cumulative working duration of the electric heating module 10 according to the required heat of the drying mode and the electric heating power of the electric heating module 10; control the electric heating module 10 to work for the cumulative working duration in an intermittent working mode or a PID control mode in combination with the exhaust temperature of the heat pump system.

[0056] In this embodiment, when the electric heating power of the electric heating module 10 is relatively large, for example, when the electric heating power of the electric heating module 10 is greater than 1000 W, continuous operation of the electric heating module 10 will damage the electric heating module 10, and the heat pump system and the dryer 100 will be damaged. At this time, the electric heating module 10 is controlled to work in an intermittent working mode or a PID control mode in combination with the exhaust temperature of the heat pump system to accumulate the working duration. This can not only improve the working reliability of the electric heating module 10, but also reduce the influence of the electric heating of the electric heating module 10 on the exhaust temperature of the heat pump system. Although the working time of this heating mode is relatively short, its safety and reliability are relatively low.

[0057] In addition, when the electric heating module 10 works in an intermittent working mode or a PID control mode in combination with the exhaust temperature of the heat pump system, the exhaust temperature of the heat pump system is used as a reference. When the exhaust temperature of the heat pump system rises, the electric heating power of the electric heating module 10 gradually decreases through the PID control mode (proportional integral derivative control), or the electric heating module 10 stops operating within an appropriate time, so as to restore the exhaust temperature of the heat pump system to the safe temperature range. When the exhaust temperature of the heat pump system decreases, the electric heating power of the electric heating module 10 gradually increases through PID control, so as to reduce the total working time of the drying mode and meet the user's requirements for the drying time.

[0058] It should be noted that the first safety temperature value set in this embodiment is the critical temperature value at which the heat pump system fails, and the second safety temperature value is the temperature value when the heat pump system is in a normal working state, and the first safety temperature value is greater than the second safety temperature value. Further, when the exhaust temperature in the heat pump system is greater than the second safety temperature value and less than the first safety temperature value, the controller 30 in this embodiment will send out a high-temperature alarm signal to let the customer know and take reasonable safety measures, so as to reduce the phenomenon of the heat pump system being damaged by high temperature.

[0059] Further, when the exhaust temperature of the heat pump system is greater than the first safety temperature value, the controller 30 in the dryer 100 also controls the motor of the drying drum 101 to run faster, or controls the operating power of the blower 103 to increase, so as to improve the circulation efficiency of the hot air in the heating duct 102 and reduce the phenomenon of a large amount of hot air accumulating on the exhaust side of the compressor 21.

[0060] Such as Figure 7 And in combination with Figure 2 And Figure 3As shown in the figure, the second aspect of the present invention also provides a control device 320 for a laundry treatment device corresponding to the control method of the laundry treatment device according to the first aspect of the present invention. The control device 320 includes: a control module 321, configured to control the electric heating amount of the electric heating module 10 of the laundry treatment device to be greater than the heating amount of the heat pump system of the laundry treatment device during the entire drying cycle when the laundry treatment device is in the drying mode; a comparison module 322, configured to obtain the exhaust temperature of the heat pump system and compare the exhaust temperature with the first safety temperature value of the heat pump system; the control module 321 is further configured to adjust the states of the electric heating module 10 and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value according to the exhaust temperature being greater than the first safety temperature value.

[0061] In this embodiment, the laundry treatment device of the present invention is used to set the electric heating amount of the electric heating module 10 to be greater than the heating amount of the heat pump system, thereby reducing the cost of the entire drying system. At the same time, it takes into account the influence of the increase in the electric heating power on the exhaust temperature of the heat pump system, and reduces the phenomenon that the heat pump system fails due to the increase in the exhaust temperature.

[0062] According to an embodiment of the present invention, the control module 321 is further configured to control the electric heating module 10 to be turned off until the exhaust temperature is not greater than the second safety temperature value; control the electric heating module 10 to be turned on again and the electric heating power of the electric heating module 10 to be greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0063] According to an embodiment of the present invention, the control module 321 is further configured to control the electric heating power of the electric heating module 10 to gradually decrease until the exhaust temperature is not greater than the second safety temperature value; control the electric heating power of the electric heating module 10 to gradually increase until the electric heating power of the electric heating module 10 is greater than the heating power of the heat pump system, where the second safety temperature value is less than the first safety temperature value.

[0064] According to an embodiment of the present invention, the control device 320 further includes a calculation module, which calculates the cumulative working duration of the electric heating module 10 according to the required heat in the drying mode and the electric heating power of the electric heating module 10; the control module 321 is further configured to control the electric heating module 10 to continuously work for the cumulative working duration until the drying mode ends.

[0065] According to an embodiment of the present invention, the control module 321 is further configured to control the power of the compressor 21 of the heat pump system to gradually decrease until the exhaust temperature is not greater than the second safety temperature value; control the power of the compressor 21 of the heat pump system to gradually recover to the normal value, where the second safety temperature value is less than the first safety temperature value.

[0066] The optional embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention. For example, the control method of the clothing treatment device of the present invention determines whether the heat pump system is normal by monitoring the exhaust gas temperature detected by the temperature sensor 25, but this is not a limitation on the protection scope of the control method of the clothing treatment device of the present invention. For example, the control method of the clothing treatment device of the present invention can also determine whether the heat pump system is normal by the temperature of the hot air in the heating air duct 102, and this adjustment belongs to the protection scope of the control method of the clothing treatment device of the present invention.

[0067] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the embodiments of the present invention will not separately describe various possible combination methods.

[0068] Those skilled in the art can understand that all or part of the steps of implementing the above embodiment methods can be completed by instructing relevant hardware through a program. The program is stored in a memory 310, including several instructions to enable a (which can be a single-chip microcomputer, chip, etc.) or a control device 320 (such as a processor) to execute all or part of the steps of the methods described in various embodiments of the present application. And the aforementioned memory 310 includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical discs that can store program codes.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A control method for a clothing treatment device, characterized in that, The control method includes: According to the fact that the clothing treatment device is in the drying mode, during the entire drying cycle, controlling the electric heating amount of the electric heating module of the clothing treatment device to be greater than the heating amount of the heat pump system of the clothing treatment device; Obtaining the exhaust gas temperature of the heat pump system and comparing the exhaust gas temperature with the first safety temperature value of the heat pump system; According to the exhaust gas temperature being greater than the first safety temperature value, adjusting the states of the electric heating module and / or the heat pump system until the exhaust gas temperature is not greater than the first safety temperature value.

2. The control method for a clothing treatment device according to claim 1, characterized in that, The adjusting the states of the electric heating module and / or the heat pump system according to the exhaust gas temperature being greater than the first safety temperature value until the exhaust gas temperature is not greater than the first safety temperature value includes: Controlling the electric heating module to be turned off until the exhaust gas temperature is not greater than the second safety temperature value; Controlling the electric heating module to be restarted and the electric heating power of the electric heating module to be greater than the heating power of the heat pump system, wherein the second safety temperature value is less than the first safety temperature value.

3. The control method for a clothing treatment device according to claim 1, characterized in that, The adjusting the states of the electric heating module and / or the heat pump system according to the exhaust gas temperature being greater than the first safety temperature value until the exhaust gas temperature is not greater than the first safety temperature value includes: Controlling the electric heating power of the electric heating module to gradually decrease until the exhaust gas temperature is not greater than the second safety temperature value; Controlling the electric heating power of the electric heating module to gradually increase until the electric heating power of the electric heating module is greater than the heating power of the heat pump system, wherein the second safety temperature value is less than the first safety temperature value.

4. The control method for a clothing treatment device according to claim 1, characterized in that, The control method further includes: Calculating the cumulative working duration of the electric heating module according to the required heat of the drying mode and the electric heating power of the electric heating module; Controlling the electric heating module to continuously work for the cumulative working duration until the drying mode ends.

5. The control method for a clothing treatment device according to claim 1, characterized in that, The control method further includes: Calculating the cumulative working duration of the electric heating module according to the required heat of the drying mode and the electric heating power of the electric heating module; Controlling the electric heating module to work for the cumulative working duration in an intermittent working mode or a PID control mode in combination with the exhaust gas temperature of the heat pump system.

6. The control method for a clothing treatment device according to claim 1, characterized in that, The adjusting the state of the electric heating module and / or the heat pump system according to the exhaust gas temperature being greater than the first safety temperature value until the exhaust gas temperature is not greater than the first safety temperature value further includes: Controlling the power of the compressor of the heat pump system to gradually decrease until the exhaust gas temperature is not greater than the second safety temperature value; Controlling the power of the compressor of the heat pump system to gradually recover to the normal power value, wherein the second safety temperature value is less than the first safety temperature value.

7. A control device for a clothing treatment device, characterized in that, The control device is used to execute the control method of the clothing treatment device according to claim 1, and the control device includes: A control module, configured to control the electric heating amount of the electric heating module of the clothing treatment device to be greater than the heating amount of the heat pump system of the clothing treatment device according to the fact that the clothing treatment device is in the drying mode during the entire drying cycle; A comparison module for obtaining the exhaust temperature of the heat pump system and comparing the exhaust temperature with a first safety temperature value of the heat pump system; The control module is further configured to adjust the state of the electric heating module and / or the heat pump system until the exhaust temperature is not greater than the first safety temperature value according to the exhaust temperature being greater than the first safety temperature value.

8. A controller, characterized in that, The controller includes a memory and a control device for a laundry treatment device according to claim 7, and instructions are stored in the memory, and when the control device executes the instructions, the control method for the laundry treatment device according to claim 1 is implemented.

9. A clothing treatment device, characterized in that, The laundry treatment device includes: A drying drum for accommodating clothes; A heat pump system, the heat pump system includes a compressor and a heat exchange device, and the heat exchange device is communicated with the heating air duct of the drying drum; An electric heating module, the electric heating module is arranged in the heating air duct of the drying drum; A temperature sensor is arranged on the exhaust side of the compressor for monitoring the exhaust temperature of the compressor and sending the monitored exhaust temperature to the controller, and the controller is the controller according to claim 8.

10. The laundry treating apparatus according to claim 9, wherein The displacement of the compressor is not greater than 8.2 cc, and the electric heating power threshold of the electric heating module is 300 W - 1600 W.

11. The laundry treating apparatus according to claim 9, wherein The heat pump system further includes a mounting seat, the compressor is arranged on the mounting seat, and a cooling fan of the compressor is not arranged on the mounting seat.

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