Drying control method and laundry treatment device

Abstract

A drying control method and a laundry treatment device. The method comprises: acquiring temperature values at multiple positions inside and outside a laundry treatment device to obtain temperature parameters; controlling the operation state of a temperature control fan on the basis of the temperature values corresponding to multiple positions in the temperature parameters; and controlling operation parameters of a compressor on the basis of the temperature value corresponding to at least one position in the temperature parameters. The temperature control fan can directly guide an airflow from the external environment to the compressor, helping to improve the effect and efficiency of cooling the compressor by the temperature control fan. The operation state of the temperature control fan is controlled by temperature values corresponding to multiple positions, thereby improving the control accuracy of the temperature control fan, helping to use the temperature control fan to more accurately change the drying temperature, and improving the drying quality. The operation parameters of the compressor are controlled in real time while controlling the temperature control fan, thereby further improving the accuracy of drying temperature control, improving the drying quality, and meeting requirements for low-temperature drying.

Description

Drying control method and clothing processing equipment

[0001] This application claims priority to a patent application filed with the State Intellectual Property Office of China on December 22, 2023, with application number 202311792013.2 and invention name “Drying Control Method and Clothing Processing Device”. Technical Field

[0002] The present application relates to the field of drying, and more specifically, to a drying control method and a clothing processing device. Background Art

[0003] When the heat pump washer-dryer is drying, the drying temperature becomes higher and higher due to the accumulation of heat in the drum. Excessively high drying temperature causes damage to fabric fibers and affects the drying quality. In particular, some high-end materials such as silk, wool, etc. are more sensitive to drying temperature and require a lower drying temperature.

[0004] Conventional heat pump drying systems often use a fixed-frequency compressor and auxiliary fans to dissipate heat to indirectly deal with the situation where the drying temperature is too high. However, this method mainly relies on compressor shutdown to achieve cooling, resulting in large fluctuations in drying temperature and affecting drying quality. Summary of the Invention

[0005] The present application provides a drying control method and a clothing processing device to at least solve the technical problem of low drying temperature control accuracy affecting the drying quality.

[0006] According to a first aspect of an embodiment of the present application, a drying control method is provided, which is applied to a clothes processing device with a drying function, the clothes processing device comprising a drum and a heat pump module, the heat pump module comprising a compressor, a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used to serve as an evaporator to cool and dehumidify the drying air flow, and the first heat exchanger is used to serve as a condenser to heat the drying air flow after cooling and dehumidification, and the clothes processing device is provided with a circulating drying flow path formed between the drum and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothes processing device is further provided with a drying fan that provides circulating power for the circulating drying flow path, a cooling channel for cooling the compressor is further provided around the periphery of the compressor, an inlet of the cooling channel is connected to the external environment, and a temperature control fan is further provided in the cooling channel for guiding the air flow in the external environment to the cooling channel of the compressor, and the method comprises:

[0007] Acquiring temperature values ​​at multiple locations inside and outside the laundry processing device to obtain temperature parameters;

[0008] Controlling the operating state of the temperature-controlled fan according to the temperature values ​​of multiple positions in the temperature parameter;

[0009] The operating parameters of the compressor are controlled according to the temperature value corresponding to at least one position in the temperature parameters.

[0010] Optionally, the temperature parameters include the ambient temperature outside the clothing processing device and the drying temperature of the air flow entering the drum, as well as the condensing temperature of the condenser and / or the exhaust temperature of the air flow at the compressor exhaust port.

[0011] Optionally, controlling the operating state of the temperature-controlled fan according to the temperature values ​​corresponding to the multiple positions in the temperature parameter includes:

[0012] The operating state of the temperature-controlled fan is controlled according to the ambient temperature, drying temperature, condensation temperature and exhaust temperature.

[0013] Optionally, controlling the operating state of the temperature-controlled fan according to the ambient temperature, drying temperature, condensing temperature, and exhaust temperature includes:

[0014] When any of the following conditions is met, the temperature control fan is controlled to be continuously turned on:

[0015] The ambient temperature is lower than a preset ambient threshold and the drying temperature is higher than a preset first drying threshold;

[0016] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than a preset first exhaust threshold, and the exhaust temperature is higher than a preset second exhaust threshold;

[0017] The ambient temperature is higher than the ambient threshold and the drying temperature is higher than a preset second drying threshold;

[0018] The ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is higher than a preset third exhaust threshold or the condensation temperature is higher than a preset first condensation threshold.

[0019] Optionally, controlling the operating state of the temperature-controlled fan according to the ambient temperature, drying temperature, condensing temperature, and exhaust temperature includes:

[0020] When any of the following conditions is met, the temperature control fan is controlled to be turned on intermittently:

[0021] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than the first exhaust threshold, and the exhaust temperature is lower than the second exhaust threshold;

[0022] When the ambient temperature is higher than the ambient threshold and the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is not lower than the preset fourth exhaust threshold or the condensation temperature is not lower than the preset second condensation threshold.

[0023] Optionally, controlling the operating state of the temperature-controlled fan according to the ambient temperature, drying temperature, condensing temperature, and exhaust temperature includes:

[0024] When any of the following conditions is met, the temperature control fan remains in the off state:

[0025] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, and the exhaust temperature is lower than the first exhaust threshold;

[0026] When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is lower than the preset fourth exhaust threshold or the condensation temperature is lower than the preset second condensation threshold.

[0027] Optionally, the first drying threshold is equal to the second drying threshold, the second exhaust threshold is equal to the third exhaust threshold, the first exhaust threshold is less than the second exhaust threshold, the fourth exhaust threshold is less than the second exhaust threshold, and the first condensation threshold is greater than the second condensation threshold.

[0028] Optionally, controlling the operating parameters of the compressor according to the temperature value corresponding to at least one position in the temperature parameters includes:

[0029] In response to a drying mode signal of the clothes treating apparatus, the operating frequency of the compressor is controlled according to the drying mode of the clothes treating apparatus, the drying temperature, and a preset frequency table.

[0030] Optionally, controlling the operating frequency of the compressor according to the drying mode of the clothes processing device, the drying temperature, and a preset frequency table includes:

[0031] When the drying mode is a non-low-temperature drying mode, calculating a first difference between the drying temperature and a preset first target value, and retrieving the operating frequency from a preset first frequency table according to the first difference to control the compressor;

[0032] When the drying mode is the low-temperature drying mode, a second difference between the drying temperature and a preset second target value is calculated, and the operating frequency is retrieved from a preset second frequency table according to the second difference to control the compressor.

[0033] Optionally, the method further includes:

[0034] In response to a temperature acquisition signal, determining whether the ambient temperature can be acquired;

[0035] If the ambient temperature can be obtained, multiple ambient temperatures are obtained within a preset time period and an average value is calculated to obtain the ambient temperature in the temperature parameter;

[0036] If the ambient temperature cannot be obtained, a preset setting value is used as the ambient temperature in the temperature parameter.

[0037] Optionally, the clothing processing device includes a accommodating box, in which a accommodating cavity for accommodating the compressor is provided. The accommodating box is designed so that when the compressor is located in the accommodating cavity, a bypass channel is formed between the outer shell of the compressor and the accommodating box. A first through hole that communicates with the bypass channel is provided on a first side wall of the accommodating box, and a second through hole that communicates with the bypass channel is provided on a second side wall of the accommodating box. The temperature-controlled fan is installed on the first side wall and is arranged corresponding to the position of the first through hole.

[0038] According to a second aspect of an embodiment of the present application, a clothes processing device is provided, comprising a drum and a heat pump module, the heat pump module comprising a compressor, a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used to serve as an evaporator to cool and dehumidify the drying air flow, and the first heat exchanger is used to serve as a condenser to heat the drying air flow after cooling and dehumidification, the clothes processing device is provided with a circulating drying flow path formed between the drum and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothes processing device is further provided with a drying fan that provides circulation power for the circulating drying flow path, a cooling channel for cooling the compressor is further provided around the periphery of the compressor, an inlet of the cooling channel is communicated with the external environment, and a temperature-controlled fan is further provided in the cooling channel for guiding the air flow in the external environment to the cooling channel of the compressor;

[0039] The clothing processing device also includes a accommodating box, which is provided with an accommodating cavity for accommodating the compressor. The accommodating box is designed so that when the compressor is located in the accommodating cavity, a bypass channel is formed between the outer shell of the compressor and the accommodating box. A first through hole that communicates with the bypass channel is provided on a first side wall of the accommodating box, and a second through hole that communicates with the bypass channel is provided on a second side wall of the accommodating box. The temperature control fan is installed on the first side wall and is arranged corresponding to the position of the first through hole.

[0040] Optionally, the clothes processing device adopts the drying control method described above.

[0041] Optionally, the clothing processing device is a clothes dryer or a heat pump washer-dryer.

[0042] In the embodiments of the present application, the temperature-controlled fan can directly direct airflow from the external environment to the compressor, allowing the temperature of the compressor to be directly affected by the temperature of the external airflow, which helps to improve the cooling effect and efficiency of the temperature-controlled fan on the compressor. At the same time, the operating state of the temperature-controlled fan is controlled by the temperature values ​​corresponding to multiple positions, which improves the control accuracy of the temperature-controlled fan, helps to use the temperature-controlled fan to more accurately change the drying temperature, and improves the drying quality. In addition, while controlling the temperature-controlled fan, the operating parameters of the compressor are also controlled in real time, further improving the control accuracy of the drying temperature, improving the drying quality, and meeting the requirements of low-temperature drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG. 1 is an exploded view of a clothes treating apparatus according to an embodiment.

[0044] FIG2 is a schematic diagram of a temperature control fan in a clothes processing device according to an embodiment.

[0045] FIG3 is a schematic diagram of a flow bypass channel of a clothes processing device according to an embodiment.

[0046] FIG4 is a schematic diagram of the airflow direction of a temperature-controlled fan of a clothes processing device in one embodiment.

[0047] FIG5 is a flow chart of a control method in an embodiment.

[0048] FIG6 is an application flow chart of a control method according to an embodiment.

[0049] FIG. 7 is a flow chart of compressor operating frequency control in a control method according to an embodiment.

[0050] Marking instructions: 1. Compressor; 2. Condenser; 3. Evaporator; 4. Container; 5. Temperature control fan; 6. Bypass channel; 7. First through hole; 8. Second through hole; 9. First temperature sensing package; 10. Second temperature sensing package. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] According to an embodiment of the present application, an embodiment of a drying control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0054] As shown in Figures 1-4, the clothing processing equipment includes a barrel and a heat pump module, and the heat pump module includes a compressor 1, a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used as an evaporator 3 to cool and dehumidify the drying airflow, and the first heat exchanger is used as a condenser 2 to heat, cool and dehumidify the drying airflow. The clothing processing equipment is provided with a circulating drying flow path formed between the barrel and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothing processing equipment is also provided with a drying fan that provides circulating power for the circulating drying flow path. A cooling channel for cooling the compressor is also provided around the periphery of the compressor, and the inlet of the cooling channel is connected to the external environment. The cooling channel is also provided with a temperature control fan 5 for guiding the airflow in the external environment to the cooling channel of the compressor 1.

[0055] The clothing processing device includes a accommodating box 4, which is provided with an accommodating cavity for accommodating the compressor 1. The accommodating box 4 is designed so that when the compressor 1 is located in the accommodating cavity, a bypass channel 6 is formed between the outer shell of the compressor 1 and the accommodating box 4. A first through hole 7 that is in communication with the bypass channel 6 is provided on a first side wall of the accommodating box 4, and a second through hole 8 that is in communication with the bypass channel 6 is provided on a second side wall of the accommodating box 4. The temperature control fan 5 is installed on the first side wall and is arranged corresponding to the position of the first through hole 7.

[0056] Specifically, taking a heat pump washer-dryer as an example of clothing processing equipment, the variable frequency compressor 1, condenser 2, throttle, and evaporator 3 in the heat pump washer-dryer are sequentially connected via pipelines. Air in the heat pump washer-dryer circulates between the drum, the drying duct, the container 4, and the circulation fan. The container 4 houses the compressor 1, condenser 2, throttle, and evaporator 3. The air inlet of the temperature-controlled fan 5 is connected to the louver on the heat pump washer-dryer's housing, and the air outlet of the temperature-controlled fan 5 is connected to the first through-hole 7. When the temperature-controlled fan 5 is turned on, it draws air through the louver and directs cool air from the outside into the turbulent duct through the first through-hole 7. The cool air flows through the turbulent duct and exchanges heat with the compressor 1, reducing the temperature of the compressor 1. The cool air then flows out through the second through-hole 8 and is discharged to the outside of the heat pump washer-dryer.

[0057] A first temperature sensing package 9 is provided in the middle of the condenser 2 for detecting the condensing temperature T1; a second temperature sensing package 10 is provided on the exhaust pipe of the compressor 1 for detecting the exhaust temperature T2; a third temperature sensing package is provided at the cylinder inlet for detecting the drying temperature T3; an ambient temperature sensing package is provided outside the cylinder for detecting the ambient temperature T4.

[0058] Conventional heat pump clothing processing equipment often uses a fixed-frequency compressor 1 and an auxiliary fan to dissipate heat to indirectly deal with the situation where the drying temperature is too high. However, this method has the following problems:

[0059] The fixed-frequency compressor 1 cannot adjust the output and can only actively shut down to reduce the drying temperature. Frequent start and stop causes the heat pump system to frequently establish a pressure difference, resulting in low drying efficiency and large fluctuations in the drying temperature.

[0060] The auxiliary fan heat dissipation method is adopted. The basis for controlling the start and stop of the auxiliary fan is often the exhaust temperature or the temperature limit of the condenser 2. Its main purpose is to reduce the system load and keep the compressor 1 running normally. However, it cannot effectively control the stability of the drying temperature, affecting the drying performance and drying quality, and it is even more impossible to achieve a lower drying temperature (drying at 37°C).

[0061] When the auxiliary fan blows air to cool the compressor 1, there is no air circulation channel around the compressor 1, the wind blowing on the surface of the compressor 1 is relatively scattered, and most of the wind is not effectively used.

[0062] Based on the fact that the existing technology cannot achieve low-temperature drying (drying at 37°C) and cannot stably and effectively control the drying temperature, this patent proposes a low-temperature drying control method and device for a heat pump washer-dryer, which can achieve low-temperature drying and maintain a stable drying temperature.

[0063] Based on this, as shown in FIG5 , the method provided in this embodiment includes the following steps:

[0064] S101. Acquire temperature values ​​at multiple locations inside and outside the laundry processing device to obtain temperature parameters.

[0065] In one embodiment, the clothing processing device includes multiple devices and multiple areas. Different positions of different devices and different areas can detect corresponding temperature values. By obtaining the temperature values ​​of multiple positions, the temperature parameters can be obtained. It should be noted that the specific temperature value of the position to be obtained is determined according to actual needs. Among them, the actual demand refers to the control demand of the temperature control blower 5. In other words, the temperature values ​​of the positions are obtained based on which the accuracy of controlling the operating state of the temperature control blower 5 is higher. This embodiment does not specifically limit this.

[0066] S102 , controlling the operating state of the temperature-controlled fan 5 according to the temperature values ​​corresponding to the multiple positions in the temperature parameter.

[0067] In one embodiment, after obtaining the temperature parameter, the temperature parameter includes temperature values ​​corresponding to multiple positions, and the operating state of the temperature-control fan 5 is then controlled based on the temperature values ​​corresponding to the multiple positions. Specifically, the operating state of the temperature-control fan 5 can be controlled based on the temperature values ​​corresponding to two positions, or based on the temperature values ​​corresponding to three positions, or based on the temperature values ​​corresponding to all positions, which is not specifically limited in this embodiment.

[0068] In one embodiment, the operating state of the temperature control fan 5 includes starting and braking. In another embodiment, the operating state of the temperature control fan 5 also includes different wind speeds or operating frequencies of the temperature control fan 5.

[0069] S103 . Control the operating parameters of the compressor 1 according to the temperature value corresponding to at least one position in the temperature parameters.

[0070] In one embodiment, since the temperature parameter includes temperature values ​​corresponding to multiple locations, the operating parameters of the compressor 1 can be controlled based on the temperature value corresponding to at least one location. For example, when the operating frequency of the compressor 1 needs to be reduced, the operating frequency of the compressor 1 can be controlled based on the temperature value of the environment in which the compressor 1 is located as a reference.

[0071] Through the above steps, the temperature-controlled fan 5 can directly direct airflow from the external environment to the compressor 1, allowing the temperature of the compressor 1 to be directly affected by the temperature of the external airflow, which helps to improve the cooling effect and efficiency of the temperature-controlled fan 5 on the compressor 1. At the same time, the operating state of the temperature-controlled fan 5 is controlled by the temperature values ​​corresponding to multiple positions, which improves the control accuracy of the temperature-controlled fan 5, helps to use the temperature-controlled fan 5 to more accurately change the drying temperature and improve the drying quality. In addition, while controlling the temperature-controlled fan 5, the operating parameters of the compressor 1 are also controlled in real time, further improving the control accuracy of the drying temperature and improving the drying quality, meeting the requirements of low-temperature drying.

[0072] In another embodiment of the present application, the temperature parameters include the ambient temperature outside the clothing processing device and the drying temperature of the air flow entering the drum, as well as the condensing temperature of the condenser 2 and the exhaust temperature of the air flow at the exhaust port of the compressor 1. Alternatively, the temperature parameters include the ambient temperature outside the clothing processing device and the drying temperature of the air flow entering the drum, as well as the condensing temperature of the condenser 2 or the exhaust temperature of the air flow at the exhaust port of the compressor 1.

[0073] In one embodiment, the temperature value of the corresponding position may be collected by installing a temperature sensor or a temperature sensing package, which is not limited in this embodiment.

[0074] Through the above steps, since the ambient temperature, drying temperature, condensing temperature and exhaust temperature can characterize the drying temperature conditions in the clothing processing equipment, the ambient temperature, drying temperature, condensing temperature and exhaust temperature are used to control the operating state of the temperature-controlled fan 5 and the operating parameters of the compressor 1, so as to improve the control effect and thus improve the drying quality.

[0075] In another embodiment of the present application, controlling the operating state of the temperature-controlled fan 5 according to the temperature values ​​corresponding to the multiple positions in the temperature parameter includes:

[0076] The operating state of the temperature-controlled fan 5 is controlled according to the temperature conditions of the ambient temperature, drying temperature, condensation temperature and exhaust temperature.

[0077] In one embodiment, the temperature values ​​at the four positions are all used to control the operating state of the temperature-controlled fan 5 , so as to improve the control accuracy and thus improve the drying quality.

[0078] In another embodiment of the present application, as shown in FIG6 , the operating state of the temperature-controlled fan 5 is controlled according to the ambient temperature, drying temperature, condensing temperature and exhaust temperature, including:

[0079] When any of the following conditions is met, the temperature control fan 5 is controlled to be continuously turned on:

[0080] The ambient temperature is lower than a preset ambient threshold and the drying temperature is higher than a preset first drying threshold;

[0081] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than a preset first exhaust threshold, and the exhaust temperature is higher than a preset second exhaust threshold;

[0082] The ambient temperature is higher than the ambient threshold and the drying temperature is higher than a preset second drying threshold;

[0083] The ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is higher than a preset third exhaust threshold or the condensation temperature is higher than a preset first condensation threshold.

[0084] The operating state of the temperature-controlled fan 5 is controlled according to the ambient temperature, drying temperature, condensation temperature and exhaust temperature, including:

[0085] When any of the following conditions is met, the temperature control fan 5 is controlled to be turned on intermittently:

[0086] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than the first exhaust threshold, and the exhaust temperature is lower than the second exhaust threshold;

[0087] When the ambient temperature is higher than the ambient threshold and the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is not lower than the preset fourth exhaust threshold or the condensation temperature is not lower than the preset second condensation threshold.

[0088] The operating state of the temperature-controlled fan 5 is controlled according to the ambient temperature, drying temperature, condensation temperature and exhaust temperature, including:

[0089] When any of the following conditions is met, the temperature control fan 5 remains in the off state:

[0090] The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, and the exhaust temperature is lower than the first exhaust threshold;

[0091] When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is lower than the preset fourth exhaust threshold or the condensation temperature is lower than the preset second condensation threshold.

[0092] Specifically, when the ambient temperature is lower than the preset ambient threshold and the drying temperature is higher than the preset first drying threshold, the temperature control fan 5 is controlled to be continuously turned on;

[0093] When the ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than the preset first exhaust threshold, and the exhaust temperature is higher than the preset second exhaust threshold, the temperature control fan 5 is controlled to be continuously turned on;

[0094] When the ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than the first exhaust threshold, and the exhaust temperature is lower than the second exhaust threshold, the temperature control fan 5 is controlled to be turned on intermittently;

[0095] When the ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, and the exhaust temperature is lower than the first exhaust threshold, the temperature-controlled fan 5 remains in an off state;

[0096] When the ambient temperature is higher than the ambient threshold and the drying temperature is higher than a preset second drying threshold, controlling the temperature control fan 5 to be continuously turned on;

[0097] When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and the exhaust temperature is higher than the preset third exhaust threshold or the condensation temperature is higher than the preset first condensation threshold, the temperature control fan 5 is controlled to be continuously turned on;

[0098] When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, determine whether the exhaust temperature is lower than the preset fourth exhaust threshold or determine whether the condensation temperature is lower than the preset second condensation threshold. If so, the temperature control fan 5 remains in the off state; if not, the temperature control fan 5 is controlled to be turned on intermittently.

[0099] For ease of understanding, as shown in Figure 6, the ambient temperature is Tambient, the drying temperature is T3, the exhaust temperature is T2, the condensing temperature is T1, the ambient threshold is D℃, the first drying threshold is (K+1)℃, the second drying threshold is (K+1)℃, the first exhaust threshold is M℃, the second exhaust threshold is N℃, the third exhaust threshold is N℃, the fourth exhaust threshold is (N-5)℃, the first condensation threshold is P℃, and the second condensation threshold is (P-2)℃.

[0100] It should be noted that after the drying process is completed, if the operating state of the temperature control fan 5 is on, the temperature control fan 5 is turned off. Alternatively, when the drying temperature is lower than K°C, the temperature control fan 5 is controlled to be turned off.

[0101] Through the above steps, the temperature control fan 5 is turned on, off or intermittently turned on in combination with the ambient temperature, drying temperature, exhaust temperature and condensing temperature, which helps to improve the control accuracy of the drying temperature and thus improve the drying quality.

[0102] In another embodiment of the present application, the first drying threshold is equal to the second drying threshold, the second exhaust threshold is equal to the third exhaust threshold, the first exhaust threshold is less than the second exhaust threshold, the fourth exhaust threshold is less than the second exhaust threshold, and the first condensation threshold is greater than the second condensation threshold.

[0103] In another embodiment of the present application, controlling the operating parameters of the compressor 1 according to the temperature value corresponding to at least one position in the temperature parameters includes:

[0104] In response to the drying mode signal of the clothes treating apparatus, the operating frequency of the compressor 1 is controlled according to the drying mode of the clothes treating apparatus, the drying temperature, and a preset frequency table.

[0105] Through the above steps, the operating frequency of the compressor 1 is controlled according to the drying temperature by means of a preset frequency table, and different drying modes are controlled to different degrees, which is convenient for improving the control accuracy of the compressor 1, thereby accurately controlling the drying temperature and improving the drying quality.

[0106] In another embodiment of the present application, as shown in FIG7 , controlling the operating frequency of the compressor 1 according to the drying mode of the clothes processing device, the drying temperature, and a preset frequency table includes:

[0107] When the drying mode is a non-low-temperature drying mode, a first difference between the drying temperature and a preset first target value is calculated, and the operating frequency is retrieved from a preset first frequency table according to the first difference to control the compressor 1;

[0108] When the drying mode is the low-temperature drying mode, a second difference between the drying temperature and a preset second target value is calculated, and the operating frequency is retrieved from a preset second frequency table according to the second difference to control the compressor 1.

[0109] Through the above steps, different drying modes use different frequency tables, thereby obtaining different operating frequencies of the compressor 1, which is convenient for improving the control accuracy of the compressor 1, thereby accurately controlling the drying temperature and improving the drying quality.

[0110] In another embodiment of the present application, as shown in FIG7 , the method further includes:

[0111] In response to a temperature acquisition signal, determining whether the ambient temperature can be acquired;

[0112] If the ambient temperature can be obtained, multiple ambient temperatures are obtained within a preset time period and an average value is calculated to obtain the ambient temperature in the temperature parameter;

[0113] If the ambient temperature cannot be obtained, a preset setting value is used as the ambient temperature in the temperature parameter.

[0114] By following the above steps and determining the ambient temperature by taking the average value, it is helpful to improve the accuracy of the ambient temperature, facilitate the accuracy and scientificity of subsequent judgments, and make the judgment results more in line with the actual situation.

[0115] The embodiment of the present application also provides a clothing processing device, as shown in Figures 1-4, comprising a barrel and a heat pump module, the heat pump module comprising a compressor 1, a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used as an evaporator 3 to cool and dehumidify the drying airflow, and the first heat exchanger is used as a condenser 2 to heat, cool and dehumidify the drying airflow, the clothing processing device is provided with a circulating drying flow path formed between the barrel and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothing processing device is further provided with a drying fan that provides circulating power for the circulating drying flow path, a cooling channel for cooling the compressor is further provided around the periphery of the compressor, the inlet of the cooling channel is connected to the external environment, and a temperature control fan 5 is further provided in the cooling channel for guiding the airflow in the external environment to the cooling channel of the compressor 1;

[0116] The laundry processing device also includes a housing box 4 having a housing cavity for accommodating the compressor 1. The housing box 4 is designed so that when the compressor 1 is located in the housing cavity, a bypass channel 6 is formed between the outer shell of the compressor 1 and the housing box 4. A first through hole 7 is formed on a first side wall of the housing box 4, communicating with the bypass channel 6. A second through hole 8 is formed on a second side wall of the housing box 4, communicating with the bypass channel 6. The temperature-controlled fan 5 is mounted on the first side wall and is positioned corresponding to the first through hole 7. At least a portion of the cooling channel is the bypass channel 6.

[0117] Through the above steps, the temperature-controlled fan 5 can directly guide the airflow in the external environment to the compressor 1 , which helps to improve the cooling effect and cooling efficiency of the temperature-controlled fan 5 on the compressor 1 .

[0118] In another embodiment of the present application, the clothes processing device adopts the drying control method described above.

[0119] In another embodiment of the present application, the clothing processing device is a clothes dryer or a heat pump washer-dryer.

[0120] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0121] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0123] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0124] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0125] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0126] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A drying control method, applied to a clothes processing device with a drying function, the clothes processing device comprising a drum and a heat pump module, the heat pump module comprising a compressor (1), a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used as an evaporator (3) to cool and dehumidify the drying airflow, and the first heat exchanger is used as a condenser (2) to heat, cool and dehumidify the drying airflow, the clothes processing device is provided with a circulating drying flow path formed between the drum and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothes processing device is also provided with a drying fan for providing circulating power for the circulating drying flow path, characterized in that: The compressor is also provided with a cooling channel for cooling the compressor around its periphery, the inlet of the cooling channel being in communication with the external environment, and the cooling channel is also provided with a temperature control fan (5) for directing airflow in the external environment to the cooling channel of the compressor (1), the method comprising: Acquiring temperature values ​​at multiple locations inside and outside the laundry processing device to obtain temperature parameters; Controlling the operating state of the temperature-controlled fan (5) according to the temperature values ​​at multiple positions in the temperature parameter; The operating parameters of the compressor (1) are controlled according to the temperature value corresponding to at least one position in the temperature parameters.

2. The drying control method according to claim 1, characterized in that: The temperature parameters include the ambient temperature outside the clothing processing device and the drying temperature of the airflow entering the drum, as well as the condensation temperature of the condenser (2) and the exhaust temperature of the airflow at the exhaust port of the compressor (1).

3. The drying control method according to claim 2, characterized in that: The step of controlling the operating state of the temperature control fan (5) according to the temperature values ​​corresponding to the multiple positions in the temperature parameter comprises: The operating state of the temperature-controlled fan (5) is controlled according to the ambient temperature, drying temperature, condensation temperature and exhaust temperature.

4. The drying control method according to claim 3, characterized in that: The operating state of the temperature-controlled fan (5) is controlled according to the ambient temperature, the drying temperature, the condensation temperature and the exhaust temperature, comprising: When any of the following conditions is met, the temperature control fan (5) is controlled to be continuously turned on: The ambient temperature is lower than a preset ambient threshold and the drying temperature is higher than a preset first drying threshold; The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than a preset first exhaust threshold, and the exhaust temperature is higher than a preset second exhaust threshold; The ambient temperature is higher than the ambient threshold and the drying temperature is higher than a preset second drying threshold; The ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is higher than a preset third exhaust threshold or the condensation temperature is higher than a preset first condensation threshold.

5. The drying control method according to claim 4, characterized in that: The operating state of the temperature-controlled fan (5) is controlled according to the ambient temperature, the drying temperature, the condensation temperature and the exhaust temperature, comprising: When any of the following conditions is met, the temperature control fan (5) is controlled to be turned on intermittently: The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, the exhaust temperature is higher than the first exhaust threshold, and the exhaust temperature is lower than the second exhaust threshold; When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is not lower than the preset fourth exhaust threshold or the condensation temperature is not lower than the preset second condensation threshold.

6. The drying control method according to claim 5, characterized in that: The operating state of the temperature-controlled fan (5) is controlled according to the ambient temperature, the drying temperature, the condensation temperature and the exhaust temperature, comprising: When any of the following conditions is met, the temperature control fan (5) remains in the closed state: The ambient temperature is lower than the ambient threshold, the drying temperature is lower than the first drying threshold, and the exhaust temperature is lower than the first exhaust threshold; When the ambient temperature is higher than the ambient threshold, the drying temperature is lower than the second drying threshold, and at the same time, the exhaust temperature is lower than the third exhaust threshold or the condensation temperature is lower than the first condensation threshold, the exhaust temperature is lower than the preset fourth exhaust threshold or the condensation temperature is lower than the preset second condensation threshold.

7. The drying control method according to claim 6, characterized in that: The first drying threshold is equal to the second drying threshold, the second exhaust threshold is equal to the third exhaust threshold, the first exhaust threshold is less than the second exhaust threshold, the fourth exhaust threshold is less than the second exhaust threshold, and the first condensation threshold is greater than the second condensation threshold.

8. The drying control method according to claim 2, characterized in that: The step of controlling the operating parameters of the compressor (1) according to the temperature value corresponding to at least one position in the temperature parameter comprises: In response to a drying mode signal of the laundry processing device, the operating frequency of the compressor (1) is controlled according to the drying mode of the laundry processing device, the drying temperature and a preset frequency table.

9. The drying control method according to claim 8, characterized in that: The controlling the operating frequency of the compressor (1) according to the drying mode of the clothes processing device, the drying temperature and a preset frequency table comprises: When the drying mode is a non-low-temperature drying mode, a first difference value between the drying temperature and a preset first target value is calculated, and the operating frequency is retrieved from a preset first frequency table according to the first difference value to control the compressor (1); When the drying mode is a low-temperature drying mode, a second difference value between the drying temperature and a preset second target value is calculated, and the operating frequency is retrieved from a preset second frequency table according to the second difference value to control the compressor (1).

10. The drying control method according to any one of claims 2 to 9, characterized in that: The method further comprises: In response to the temperature acquisition signal, determining whether the ambient temperature can be acquired; If the ambient temperature can be obtained, multiple ambient temperatures are obtained within a preset time period and an average value is calculated to obtain the ambient temperature in the temperature parameter; If the ambient temperature cannot be obtained, a preset setting value is used as the ambient temperature in the temperature parameter.

11. The drying control method according to any one of claims 1 to 9, characterized in that: The clothing processing device comprises a accommodating box (4), a accommodating cavity for accommodating the compressor (1) is provided in the accommodating box (4), the accommodating box (4) is designed so that when the compressor (1) is located in the accommodating cavity, a bypass channel (6) is formed between the outer shell of the compressor (1) and the accommodating box (4), a first through hole (7) communicating with the bypass channel (6) is provided on a first side wall of the accommodating box (4), a second through hole (8) communicating with the bypass channel (6) is provided on a second side wall of the accommodating box (4), and the temperature control fan (5) is mounted on the first side wall and arranged corresponding to the position of the first through hole (7); Wherein, at least a portion of the cooling channel is the bypass channel (6).

12. The drying control method according to claim 1, characterized in that: The temperature parameters include the ambient temperature outside the clothing processing device and the drying temperature of the airflow entering the drum, as well as the condensation temperature of the condenser (2) or the exhaust temperature of the airflow at the exhaust port of the compressor (1).

13. A clothes processing device, characterized in that: The heat pump module comprises a cylinder and a heat pump module, wherein the heat pump module comprises a compressor (1), a first heat exchanger and a second heat exchanger, wherein the second heat exchanger is used as an evaporator (3) to cool and dehumidify the drying airflow, and the first heat exchanger is used as a condenser (2) to heat, cool and dehumidify the drying airflow, the clothing processing device is provided with a circulating drying flow path formed between the cylinder and the heat pump module, the first heat exchanger and the second heat exchanger are both arranged on the circulating drying flow path, and the clothing processing device is also provided with a drying fan for providing circulating power for the circulating drying flow path, characterized in that: a cooling channel for cooling the compressor is also arranged around the periphery of the compressor, the inlet of the cooling channel is connected to the external environment, and a temperature control fan (5) is also provided in the cooling channel for guiding the airflow in the external environment to the cooling channel of the compressor (1); The clothing processing device further comprises a accommodating box (4), wherein a accommodating cavity for accommodating the compressor (1) is provided in the accommodating box (4), and the accommodating box (4) is designed such that when the compressor (1) is located in the accommodating cavity, a bypass channel (6) is formed between the outer shell of the compressor (1) and the accommodating box (4), a first through hole (7) communicating with the bypass channel (6) is provided on a first side wall of the accommodating box (4), and a second through hole (8) communicating with the bypass channel (6) is provided on a second side wall of the accommodating box (4), and the temperature control fan (5) is mounted on the first side wall and arranged corresponding to the position of the first through hole (7); Wherein, at least a portion of the cooling channel is the bypass channel (6).

14. The clothes treating device according to claim 13, characterized in that: The clothes processing device adopts the drying control method according to any one of claims 1-12.

15. The laundry processing device according to claim 13 or 14, characterized in that: The clothing processing device is a clothes dryer or a heat pump washer-dryer.

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