Clothes dryer control method and clothes dryer
By selectively controlling the operation logic of the dryer's ventilation fan based on ambient temperature, the problem of high energy consumption in dryers during different seasons is solved, achieving more efficient energy management and condensation prevention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI HAIER LAUNDRY ELECTRIC APPLIANCES CO LTD
- Filing Date
- 2025-01-26
- Publication Date
- 2026-08-04
AI Technical Summary
Existing dryers use the same ventilation fan operating mode in different seasons, which increases energy consumption and fails to specifically prevent the formation of condensation.
Depending on the ambient temperature during the dryer's operation, the ventilation fan is selectively controlled to execute different operating logics, including the first operating logic, the second operating logic, and the third operating logic, in order to adapt to temperature changes in different seasons and reduce the formation of condensate.
By controlling the operating logic of the ventilation fan in a targeted manner, the energy consumption of the dryer is reduced, condensation is prevented, and the energy efficiency of the equipment is improved.
Smart Images
Figure CN122504040A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of clothing handling equipment technology, and in particular to a dryer control method and a dryer. Background Technology
[0002] Compared to air drying, clothes dryers are more efficient and convenient, saving users time and space. Furthermore, the high temperatures used in dryers sterilize clothes during the drying process, reducing damage to fabric fibers and extending the lifespan of garments. Therefore, clothes dryers are highly favored by users.
[0003] When a clothes dryer is working, the drum inside the dryer dries the clothes. During the drying process, some hot and humid air leaks from the drum into the dryer's casing. Since the dryer casing is usually made of plastic or metal, the hot and humid air condenses on the inner wall of the casing, forming condensate.
[0004] To prevent excessive condensation inside the dryer and its dripping onto the user's floor, a ventilation fan is typically installed inside the dryer to exchange air and prevent condensation. However, this ventilation fan operates at the same rate year-round, failing to provide targeted ventilation and thus increasing the dryer's energy consumption. Summary of the Invention
[0005] The purpose of this invention is to provide a dryer control method and a dryer, which can control the air exchange fan of the dryer according to the ambient temperature to reduce the energy consumption of the dryer.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A dryer control method for controlling the operation of the dryer's ventilation fan includes the following steps:
[0008] S1. Obtain the ambient temperature of the dryer during operation;
[0009] S2. Determine whether the ambient temperature is greater than the first preset temperature;
[0010] If so, proceed to step S3;
[0011] If not, then control the ventilation fan to execute the first operating logic;
[0012] S3. Determine whether the ambient temperature is greater than the second preset temperature, wherein the second preset temperature is greater than the first preset temperature;
[0013] If not, then control the ventilation fan to execute the second operating logic;
[0014] If so, then control the ventilation fan to execute the third operating logic.
[0015] As an optional method of the above-mentioned dryer control method, step S1 includes the following steps:
[0016] S11. Obtain the cooling time of the dryer, wherein the cooling time is the time interval between the current moment and the moment when the dryer last finished drying;
[0017] S12. Determine whether the cooling time is greater than the preset cooling duration;
[0018] If so, the temperature value obtained by the temperature sensor of the dryer is the ambient temperature. At the same time, the temperature value obtained by the temperature sensor is backed up to obtain a backup value.
[0019] If not, then the ambient temperature is the backup value.
[0020] As an optional method of the above-mentioned dryer control method, step S11 includes:
[0021] S111. Record the time when the dryer last ended its operation, which is the first moment;
[0022] S112. Record the time when the dryer starts running this time. This time is the second time. The time interval between the second time and the first time is the cooling time.
[0023] As an optional embodiment of the above-mentioned dryer control method, the first operating logic includes:
[0024] The duration t of the current drying cycle performed by the dryer is recorded in real time.
[0025] Determine whether t is less than a first preset duration value;
[0026] If so, then control the ventilation fan to turn off;
[0027] If not, the ventilation fan is controlled to perform a cyclical action sequence of continuously turning on for a first time period and then continuously turning off for a second time period, wherein the first time period is longer than the second time period.
[0028] As an optional method of the above-mentioned dryer control method, the timing sequence of controlling the ventilation fan to perform a cyclic action of continuously turning on for a first time period and then continuously turning off for a second time period if the t is greater than or equal to the first preset duration value includes:
[0029] The first preset duration is a. When bx+1≤t≤b(x+1), the ventilation fan is turned on. When b(x+1)<t<b(x+1)+1, the ventilation fan is turned off. Here, x is a positive integer not less than the first value, and b is obtained by rounding the result of a divided by x.
[0030] As an optional embodiment of the above-mentioned dryer control method, the second operating logic includes:
[0031] The duration t of the current drying cycle performed by the dryer is recorded in real time.
[0032] Determine whether t is less than the second preset duration value;
[0033] If so, then control the ventilation fan to turn off;
[0034] If not, the ventilation fan is controlled to perform a cyclical action sequence of continuously turning on for a third time period and then continuously turning off for a fourth time period, wherein the third time period is longer than the fourth time period, and the fourth time period is longer than the second time period.
[0035] As an optional method of the above-mentioned dryer control method, the sequence of controlling the ventilation fan to continuously turn on for a third time period and then continuously turn off for a fourth time period if the t is greater than or equal to the second preset duration value includes:
[0036] The second preset duration value is c. When by+1≤t≤by+6, the ventilation fan is turned on, and when by+6<t<b(y+1)+1, the ventilation fan is turned off. Here, y is a positive integer not less than the second value, and b is obtained by rounding the result of c divided by y.
[0037] As an alternative method for controlling the aforementioned dryer, the second value is ≤3.
[0038] As an optional method of the above-mentioned dryer control method, the third operating logic includes:
[0039] The duration t of the current drying cycle performed by the dryer is recorded in real time.
[0040] Determine whether t is less than a third preset duration value;
[0041] If so, then control the ventilation fan to turn off;
[0042] If not, then control the ventilation fan to turn on.
[0043] A clothes dryer includes a dryer housing, and an air exchange fan is installed inside the dryer housing. The operation of the air exchange fan is controlled by the aforementioned clothes dryer control method.
[0044] The beneficial effects of this invention are:
[0045] The dryer control method proposed in this invention first obtains the ambient temperature of the dryer during operation when controlling the ventilation fan. Then, based on the ambient temperature, it controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0046] The dryer proposed in this invention uses the aforementioned dryer control method to control the operation of the ventilation fan. When controlling the ventilation fan, the ambient temperature during dryer operation is first obtained. Then, based on the ambient temperature, the ventilation fan selectively executes a first operating logic, a second operating logic, or a third operating logic. Thus, in different seasons, the ventilation fan can adaptively select the appropriate operating logic based on the ambient temperature, more effectively ventilating the dryer's interior and reducing the dryer's energy consumption. Attached Figure Description
[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.
[0048] Figure 1 This is a flowchart of the dryer control method provided in an embodiment of the present invention;
[0049] Figure 2 This is a flowchart illustrating the process of obtaining the ambient temperature of the dryer during operation in the dryer control method provided in this embodiment of the invention.
[0050] Figure 3 This is a flowchart of obtaining the cooling time of the dryer in the dryer control method provided in the embodiments of the present invention;
[0051] Figure 4 This is a flowchart of the first operating logic in the dryer control method provided in the embodiments of the present invention;
[0052] Figure 5 This is a flowchart of the second operating logic in the dryer control method provided in the embodiments of the present invention;
[0053] Figure 6 This is a flowchart of the third operating logic in the dryer control method provided in the embodiments of the present invention. Detailed Implementation
[0054] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0055] Example 1
[0056] See Figure 1 This embodiment provides a dryer control method for controlling the operation of the dryer's ventilation fan, and can specifically control the operation of the ventilation fan according to the ambient temperature of the dryer during operation.
[0057] Specifically, the dryer includes a dryer housing, which contains a storage space. The storage space contains a heat pump system and a drum. The heat pump system is connected to the drum, and the outlet of the heat pump system continuously introduces high-temperature, low-humidity gas into the drum to dry the clothes placed inside the drum.
[0058] After passing through the clothes to be dried, the high-temperature, low-humidity gas becomes low-temperature, high-humidity gas. The low-temperature, high-humidity gas returns to the heat pump system from the inlet. The heat pump system processes the low-temperature, high-humidity gas and transforms it back into high-temperature, low-humidity gas.
[0059] The structure and working principle of the heat pump system are existing technologies and will not be briefly introduced here.
[0060] During operation, some hot, humid air leaks from the drum into the dryer casing. Since the casing is typically made of plastic or metal, this humid air condenses on the inner walls when the ambient temperature is low. To prevent excessive condensation and dripping onto the user's floor, a ventilation fan is installed inside the dryer casing. When activated, this fan allows for air exchange between the inside and outside of the casing, preventing condensation.
[0061] To more effectively control the operation of the ventilation fan, the dryer control method in this embodiment includes the following steps:
[0062] S1. Obtain the ambient temperature of the dryer during operation;
[0063] S2. Determine if the ambient temperature is greater than the first preset temperature;
[0064] If so, proceed to step S3;
[0065] If not, control the ventilation fan to execute the first operating logic;
[0066] S3. Determine whether the ambient temperature is greater than the second preset temperature. If the second preset temperature is greater than the first preset temperature;
[0067] If not, control the ventilation fan to execute the second operating logic;
[0068] If so, then control the ventilation fan to execute the third operating logic.
[0069] The dryer control method provided in this embodiment first obtains the ambient temperature of the dryer when it is working, and then controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic according to the ambient temperature. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0070] For example, taking the northern season as an example, in this embodiment, the first preset temperature can be selected as 15°C. When the ambient temperature is not higher than 15°C, it is winter season. The ambient temperature is low, and the temperature of the inner wall of the dryer is also low. Condensation is more likely to occur on the inner wall of the dryer. The ventilation fan executes the first operating logic to realize the air exchange between the air inside the dryer and the outside air.
[0071] The second preset temperature can be set to 28℃. When the ambient temperature is higher than 15℃ but not higher than 28℃, which is spring and autumn, the ambient temperature is relatively high and the temperature of the inner wall of the dryer is also high. Condensation is not likely to form on the inner wall of the dryer. The ventilation fan executes the second operating logic to achieve air exchange between the air inside the dryer and the outside air.
[0072] When the ambient temperature is above 28℃, which is the summer season, the temperature inside the dryer's casing is also the highest. Condensation is least likely to form on the inner wall of the dryer casing. The ventilation fan then executes the third operating logic to achieve air exchange between the air inside the dryer casing and the outside air.
[0073] Of course, in other embodiments, the first preset temperature can be set to other values as needed; the second preset temperature can also be set to other values as needed.
[0074] Example 2
[0075] This embodiment provides a method for controlling a clothes dryer.
[0076] The dryer control method includes the following steps:
[0077] S1. Obtain the ambient temperature of the dryer during operation;
[0078] S2. Determine if the ambient temperature is greater than the first preset temperature;
[0079] If so, proceed to step S3;
[0080] If not, control the ventilation fan to execute the first operating logic;
[0081] S3. Determine whether the ambient temperature is greater than the second preset temperature. If the second preset temperature is greater than the first preset temperature;
[0082] If not, control the ventilation fan to execute the second operating logic;
[0083] If so, then control the ventilation fan to execute the third operating logic.
[0084] The dryer control method provided in this embodiment first obtains the ambient temperature of the dryer when it is working, and then controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic according to the ambient temperature. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0085] For example, taking the northern season as an example, in this embodiment, the first preset temperature can be selected as 15°C. When the ambient temperature is not higher than 15°C, it is winter season. The ambient temperature is low, and the temperature of the inner wall of the dryer is also low. Condensation is more likely to occur on the inner wall of the dryer. The ventilation fan executes the first operating logic to realize the air exchange between the air inside the dryer and the outside air.
[0086] The second preset temperature can be set to 28℃. When the ambient temperature is higher than 15℃ but not higher than 28℃, which is spring and autumn, the ambient temperature is relatively high and the temperature of the inner wall of the dryer is also high. Condensation is not likely to form on the inner wall of the dryer. The ventilation fan executes the second operating logic to achieve air exchange between the air inside the dryer and the outside air.
[0087] When the ambient temperature is above 28℃, which is the summer season, the temperature inside the dryer's casing is also the highest. Condensation is least likely to form on the inner wall of the dryer casing. The ventilation fan then executes the third operating logic to achieve air exchange between the air inside the dryer casing and the outside air.
[0088] Of course, in other embodiments, the first preset temperature can be set to other values as needed; the second preset temperature can also be set to other values as needed.
[0089] Further, see Figure 2 In this embodiment, step S1 includes the following steps:
[0090] S11. Obtain the cooling time of the dryer. The cooling time is the time interval between the current moment and the moment when the dryer last finished drying.
[0091] S12. Determine if the cooling time is greater than the preset cooling duration;
[0092] If so, the temperature value obtained by the dryer's temperature sensor is the ambient temperature. At the same time, the temperature value obtained by the temperature sensor is backed up to obtain a backup value.
[0093] If not, the ambient temperature is the backup value.
[0094] By performing step S1 as described above, the ambient temperature can be accurately obtained.
[0095] Optionally, in some embodiments, the preset cooling time is the drying time of the dryer. Generally, the drying time of a dryer varies from 30 minutes to 90 minutes.
[0096] Specifically, a temperature sensor is installed inside the drum of a dryer to detect the temperature inside the drum. However, when the dryer has just finished the drying cycle, the temperature inside the drum is relatively high compared to the ambient temperature, and the temperature detected by the temperature sensor is not the ambient temperature. As time goes on, the temperature inside the drum gradually decreases until it reaches the same temperature as the ambient temperature.
[0097] If the cooling time of some garment machines is relatively short, the temperature detected by the temperature sensor is not the ambient temperature. If the cooling time of some garment machines is long enough, then the temperature detected by the temperature sensor is the ambient temperature.
[0098] Generally, the minimum operating time for a clothes dryer is 30 minutes. 30 minutes is enough time for the temperature inside the dryer drum to drop to ambient temperature.
[0099] Of course, in other embodiments, the preset cooling time can also be set to other values, as long as it ensures that the temperature inside the dryer drum can be reduced to the same as the ambient temperature within the preset cooling time after the drying program of the self-drying machine is completed.
[0100] For example, the preset cooling time is greater than 30 minutes. Further optionally, the preset cooling time can be 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes, or 60 minutes.
[0101] Generally, when a user uses a dryer to perform drying operations continuously (that is, after the dryer completes one drying operation, it immediately continues to perform a drying operation), the dryer's cooling time is almost zero, and it is necessary to obtain the ambient temperature by acquiring a backup value.
[0102] Specifically, see Figure 3 In this embodiment, step S11 includes:
[0103] S111. Record the moment when the dryer last ended its operation. This moment is the first moment.
[0104] S112. Record the moment when the dryer starts running this time. This moment is the second moment. The time interval between the second moment and the first moment is the cooling time.
[0105] That is, the time is recorded when the dryer finishes each drying cycle; this time is called the first moment. When the dryer starts again, the time is recorded; this time is called the second moment. The difference between the second moment and the first moment is the dryer's cooling time.
[0106] Understandably, when recording a moment, it is necessary to record the date on which that moment falls.
[0107] Example 3
[0108] This embodiment provides a method for controlling a clothes dryer.
[0109] The dryer control method includes the following steps:
[0110] S1. Obtain the ambient temperature of the dryer during operation;
[0111] S2. Determine if the ambient temperature is greater than the first preset temperature;
[0112] If so, proceed to step S3;
[0113] If not, control the ventilation fan to execute the first operating logic;
[0114] S3. Determine whether the ambient temperature is greater than the second preset temperature. If the second preset temperature is greater than the first preset temperature;
[0115] If not, control the ventilation fan to execute the second operating logic;
[0116] If so, then control the ventilation fan to execute the third operating logic.
[0117] The dryer control method provided in this embodiment first obtains the ambient temperature of the dryer when it is working, and then controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic according to the ambient temperature. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0118] For example, taking the northern season as an example, in this embodiment, the first preset temperature can be selected as 15°C. When the ambient temperature is not higher than 15°C, it is winter season. The ambient temperature is low, and the temperature of the inner wall of the dryer is also low. Condensation is more likely to occur on the inner wall of the dryer. The ventilation fan executes the first operating logic to realize the air exchange between the air inside the dryer and the outside air.
[0119] The second preset temperature can be set to 28℃. When the ambient temperature is higher than 15℃ but not higher than 28℃, which is spring and autumn, the ambient temperature is relatively high and the temperature of the inner wall of the dryer is also high. Condensation is not likely to form on the inner wall of the dryer. The ventilation fan executes the second operating logic to achieve air exchange between the air inside the dryer and the outside air.
[0120] When the ambient temperature is above 28℃, which is the summer season, the temperature inside the dryer's casing is also the highest. Condensation is least likely to form on the inner wall of the dryer casing. The ventilation fan then executes the third operating logic to achieve air exchange between the air inside the dryer casing and the outside air.
[0121] Of course, in other embodiments, the first preset temperature can be set to other values as needed; the second preset temperature can also be set to other values as needed.
[0122] That is, in this embodiment, the first operating logic is the low-temperature operating logic; the second operating logic is the medium-temperature operating logic; and the third operating logic is the high-temperature operating logic.
[0123] Specifically, see Figure 4 In this embodiment, the first operating logic includes:
[0124] Record the duration t of the dryer executing this drying program in real time;
[0125] Determine if t is less than the first preset duration value;
[0126] If so, then turn off the ventilation fan;
[0127] If not, the ventilation fan will be controlled to perform a cyclical action sequence of continuously turning on for a first time period and then continuously turning off for a second time period, with the first time period being longer than the second time period.
[0128] When the first operating logic controls the operation of the ventilation fan, if the duration t of the current drying cycle is less than a first preset duration, this is the initial start-up phase of the dryer. No condensation has yet formed on the inner wall of the dryer casing, so there is no need to start the ventilation fan. Once the duration t of the current drying cycle exceeds the first preset duration, the ventilation fan is controlled to operate in a cyclical sequence of being on for a first time period followed by being off for a second time period, where the first time period is longer than the second time period. In other words, the ventilation fan operates intermittently, preventing condensation from forming on the inner wall of the dryer casing and reducing energy consumption.
[0129] Since the temperature inside the dryer is also low when the ambient temperature is lower than the first preset temperature, condensation is likely to form. Therefore, when the duration t of the dryer's current drying program exceeds the first preset duration, the ventilation fan is controlled to continuously turn on for a first time period and then turn off for a second time period. The first time period is longer than the second time period to effectively prevent the formation of condensation on the inner wall of the dryer.
[0130] More specifically, in this embodiment, if t is greater than or equal to the first preset duration value, the timing sequence of controlling the ventilation fan to perform a cyclical action of continuously turning on for a first time period and then continuously turning off for a second time period includes:
[0131] The first preset duration is a. When bx+1≤t≤b(x+1), the ventilation fan is turned on, and when b(x+1)<t<b(x+1)+1, the ventilation fan is turned off. Here, x is a positive integer not less than the first value, and b is obtained by rounding the result of a divided by x.
[0132] Optionally, in this embodiment, the first value is not greater than 4.
[0133] The first preset duration value 'a' is 25 minutes, and the first value is 4. At this time, the value of 'b' is 6.
[0134] When t < 25 min, the ventilation fan is turned off.
[0135] x is a positive integer ≥ 4. When 6x + 1 ≤ t ≤ 6(x + 1), the ventilation fan is turned on.
[0136] x is a positive integer ≥ 4. When 6(x+1) < t < 6(x+1) + 1, the ventilation fan is turned off.
[0137] That is, when the dryer runs the drying program for more than 25 minutes, the ventilation fan will cycle on for 5 minutes and then off for 1 minute.
[0138] Of course, in other embodiments, the first preset duration value 'a' and the first numerical value can also be set to other values as needed.
[0139] Example 4
[0140] This embodiment provides a method for controlling a clothes dryer.
[0141] The dryer control method includes the following steps:
[0142] S1. Obtain the ambient temperature of the dryer during operation;
[0143] S2. Determine if the ambient temperature is greater than the first preset temperature;
[0144] If so, proceed to step S3;
[0145] If not, control the ventilation fan to execute the first operating logic;
[0146] S3. Determine whether the ambient temperature is greater than the second preset temperature. If the second preset temperature is greater than the first preset temperature;
[0147] If not, control the ventilation fan to execute the second operating logic;
[0148] If so, then control the ventilation fan to execute the third operating logic.
[0149] The dryer control method provided in this embodiment first obtains the ambient temperature of the dryer when it is working, and then controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic according to the ambient temperature. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0150] For example, taking the northern season as an example, in this embodiment, the first preset temperature can be selected as 15°C. When the ambient temperature is not higher than 15°C, it is winter season. The ambient temperature is low, and the temperature of the inner wall of the dryer is also low. Condensation is more likely to occur on the inner wall of the dryer. The ventilation fan executes the first operating logic to realize the air exchange between the air inside the dryer and the outside air.
[0151] The second preset temperature can be set to 28℃. When the ambient temperature is higher than 15℃ but not higher than 28℃, which is spring and autumn, the ambient temperature is relatively high and the temperature of the inner wall of the dryer is also high. Condensation is not likely to form on the inner wall of the dryer. The ventilation fan executes the second operating logic to achieve air exchange between the air inside the dryer and the outside air.
[0152] When the ambient temperature is above 28℃, which is the summer season, the temperature inside the dryer's casing is also the highest. Condensation is least likely to form on the inner wall of the dryer casing. The ventilation fan then executes the third operating logic to achieve air exchange between the air inside the dryer casing and the outside air.
[0153] Of course, in other embodiments, the first preset temperature can be set to other values as needed; the second preset temperature can also be set to other values as needed.
[0154] That is, in this embodiment, the first operating logic is the low-temperature operating logic; the second operating logic is the medium-temperature operating logic; and the third operating logic is the high-temperature operating logic.
[0155] Specifically, see Figure 4 In this embodiment, the first operating logic includes:
[0156] Record the duration t of the dryer executing this drying program in real time;
[0157] Determine if t is less than the first preset duration value;
[0158] If so, then turn off the ventilation fan;
[0159] If not, the ventilation fan will be controlled to perform a cyclical action sequence of continuously turning on for a first time period and then continuously turning off for a second time period, with the first time period being longer than the second time period.
[0160] When the first operating logic controls the operation of the ventilation fan, if the duration t of the current drying cycle is less than a first preset duration, this is the initial start-up phase of the dryer. No condensation has yet formed on the inner wall of the dryer casing, so there is no need to start the ventilation fan. Once the duration t of the current drying cycle exceeds the first preset duration, the ventilation fan is controlled to operate in a cyclical sequence of being on for a first time period followed by being off for a second time period, where the first time period is longer than the second time period. In other words, the ventilation fan operates intermittently, preventing condensation from forming on the inner wall of the dryer casing and reducing energy consumption.
[0161] Since the temperature inside the dryer is also low when the ambient temperature is lower than the first preset temperature, condensation is likely to form. Therefore, when the duration t of the dryer's current drying program exceeds the first preset duration, the ventilation fan is controlled to continuously turn on for a first time period and then turn off for a second time period. The first time period is longer than the second time period to effectively prevent the formation of condensation on the inner wall of the dryer.
[0162] More specifically, in this embodiment, if t is greater than or equal to the first preset duration value, the timing sequence of controlling the ventilation fan to perform a cyclical action of continuously turning on for a first time period and then continuously turning off for a second time period includes:
[0163] The first preset duration is a. When bx+1≤t≤b(x+1), the ventilation fan is turned on, and when b(x+1)<t<b(x+1)+1, the ventilation fan is turned off. Here, x is a positive integer not less than the first value, and b is obtained by rounding the result of a divided by x.
[0164] Optionally, in this embodiment, the first preset duration value 'a' is 25 minutes, the first value is 4, and the value of 'b' is 6. 'x' is a variable.
[0165] When t < 25 min, the ventilation fan is turned off.
[0166] x is a positive integer ≥ 4. When 6x + 1 ≤ t ≤ 6(x + 1), the ventilation fan is turned on.
[0167] x is a positive integer ≥ 4. When 6(x+1) < t < 6(x+1) + 1, the ventilation fan is turned off.
[0168] That is, when the dryer runs the drying program for more than 25 minutes, the ventilation fan will cycle on for 5 minutes and then off for 1 minute.
[0169] Of course, in other embodiments, the first preset duration value 'a' and the first numerical value can also be set to other values as needed.
[0170] Furthermore, in this embodiment, the second operational logic includes:
[0171] Record the duration t of the dryer executing this drying program in real time;
[0172] Determine if t is less than the second preset duration value;
[0173] If so, then turn off the ventilation fan;
[0174] If not, the ventilation fan will be controlled to perform a cycle of continuously turning on for a third time period and then continuously turning off for a fourth time period, with the third time period being longer than the fourth time period, and the fourth time period being longer than the second time period.
[0175] When the second operating logic controls the operation of the ventilation fan, if the duration t of the current drying cycle is less than the second preset duration, this is the initial start-up phase of the dryer. No condensation has yet formed on the inner wall of the dryer casing, so there is no need to start the ventilation fan. Once the duration t of the current drying cycle exceeds the second preset duration, the ventilation fan is controlled to cycle through a third period of continuous operation followed by a fourth period of continuous operation before being turned off. The third period is longer than the fourth period, and the fourth period is longer than the second period. In other words, the ventilation fan operates intermittently, preventing condensation from forming on the inner wall of the dryer casing and reducing energy consumption.
[0176] When the second operating logic is executed, the ambient temperature of the dryer is relatively high. At this time, condensation is less likely to form on the inner wall of the dryer. Therefore, after the duration t of the dryer's current drying program exceeds the second preset duration value, the ventilation fan is controlled to perform a cyclical action sequence of continuously turning on for a third time period and then turning off for a fourth time period. The third time period is longer than the fourth time period, and the fourth time period is longer than the second time period.
[0177] Optionally, the second preset duration value may be the same as or different from the first preset duration value.
[0178] Specifically, in this embodiment, the second preset duration is 25 minutes.
[0179] More specifically, in this embodiment, if t is greater than or equal to the second preset duration value, the timing sequence for controlling the ventilation fan to continuously turn on for a third time period and then continuously turn off for a fourth time period includes:
[0180] The second preset duration is c. When by+1≤t≤by+6, the ventilation fan is turned on, and when by+6<t<b(y+1)+1, the ventilation fan is turned off. Here, y is a positive integer not less than the second value, and b is obtained by rounding the result of c divided by y.
[0181] Optionally, in this embodiment, the second value is ≤3.
[0182] At the same time, the second value is less than the first value.
[0183] Specifically, in this embodiment, the second preset duration value c is 25 minutes, the second value is 3, and the value of b is 8.
[0184] When t < 25 min, the ventilation fan is turned off.
[0185] x is a positive integer ≥ 3. When 8x + 1 ≤ t ≤ 8(x + 1), the ventilation fan is turned on.
[0186] x is a positive integer ≥ 4. When 8(x+1) < t < 8(x+1)+1, the ventilation fan is turned off.
[0187] That is, when the dryer runs the drying program for more than 25 minutes, the ventilation fan will run a cycle of turning on for 5 minutes and then turning off for 3 minutes.
[0188] Example 5
[0189] To more effectively control the operation of the ventilation fan, this embodiment provides a dryer control method, which includes the following steps:
[0190] S1. Obtain the ambient temperature of the dryer during operation;
[0191] S2. Determine if the ambient temperature is greater than the first preset temperature;
[0192] If so, proceed to step S3;
[0193] If not, control the ventilation fan to execute the first operating logic;
[0194] S3. Determine whether the ambient temperature is greater than the second preset temperature. If the second preset temperature is greater than the first preset temperature;
[0195] If not, control the ventilation fan to execute the second operating logic;
[0196] If so, then control the ventilation fan to execute the third operating logic.
[0197] The dryer control method provided in this embodiment first obtains the ambient temperature of the dryer when it is working, and then controls the ventilation fan to selectively execute the first operating logic, the second operating logic, or the third operating logic according to the ambient temperature. In this way, in different seasons, the ventilation fan can adaptively select the corresponding operating logic according to the ambient temperature, and more effectively ventilate the dryer chamber, thereby reducing the energy consumption of the dryer.
[0198] For example, taking the northern season as an example, in this embodiment, the first preset temperature can be selected as 15°C. When the ambient temperature is not higher than 15°C, it is winter season. The ambient temperature is low, and the temperature of the inner wall of the dryer is also low. Condensation is more likely to occur on the inner wall of the dryer. The ventilation fan executes the first operating logic to realize the air exchange between the air inside the dryer and the outside air.
[0199] The second preset temperature can be set to 28℃. When the ambient temperature is higher than 15℃ but not higher than 28℃, which is spring and autumn, the ambient temperature is relatively high and the temperature of the inner wall of the dryer is also high. Condensation is not likely to form on the inner wall of the dryer. The ventilation fan executes the second operating logic to achieve air exchange between the air inside the dryer and the outside air.
[0200] When the ambient temperature is above 28℃, which is the summer season, the temperature inside the dryer's casing is also the highest. Condensation is least likely to form on the inner wall of the dryer casing. The ventilation fan then executes the third operating logic to achieve air exchange between the air inside the dryer casing and the outside air.
[0201] Of course, in other embodiments, the first preset temperature can be set to other values as needed; the second preset temperature can also be set to other values as needed.
[0202] Specifically, see Figure 6 In this embodiment, the third operating logic includes:
[0203] Record the duration t of the dryer executing this drying program in real time;
[0204] Determine if t is less than the third preset duration value;
[0205] If so, then turn off the ventilation fan;
[0206] If not, then turn on the ventilation fan.
[0207] When the ambient temperature is higher than the second preset temperature, the ambient temperature reaches its maximum. When the duration t of the current drying cycle is less than the third preset duration, this is the initial start-up phase of the dryer. No condensation has yet formed on the inner wall of the dryer casing, so the ventilation fan does not need to be activated. When the duration t of the current drying cycle exceeds the third preset duration, the ventilation fan is activated. Because the ambient temperature is high at this point, the ventilation fan needs to remain running during the later stages of drying to prevent condensation from forming on the inner wall of the dryer casing and to prevent the internal temperature of the dryer casing from becoming too high.
[0208] Optionally, the third preset duration value can be the same as the first preset duration value, or it can be different from the first preset duration value.
[0209] Optionally, in this embodiment, the third preset duration is 25 minutes.
[0210] Specifically, in this embodiment, the second preset temperature is 28°C. The drum contains two temperature sensors. When both temperature sensors detect a temperature higher than 28°C, and the temperature difference between the two sensor readings is less than 5°C, the third operating logic is executed.
[0211] Example 6
[0212] This embodiment provides a clothes dryer.
[0213] Specifically, the dryer includes a dryer housing, and an air exchange fan is installed inside the dryer housing. The operation of the air exchange fan is controlled by any one of the dryer control methods in Embodiments 1 to 5.
[0214] The dryer has a housing space inside, which contains a heat pump system and a drum. The heat pump system is connected to the drum, and the outlet of the heat pump system continuously introduces high-temperature, low-humidity gas into the drum to dry the clothes placed inside the drum.
[0215] After passing through the clothes to be dried, the high-temperature, low-humidity gas becomes low-temperature, high-humidity gas. The low-temperature, high-humidity gas returns to the heat pump system from the inlet. The heat pump system processes the low-temperature, high-humidity gas and transforms it back into high-temperature, low-humidity gas.
[0216] The dryer provided in this embodiment uses the aforementioned dryer control method to control the operation of the ventilation fan. When controlling the ventilation fan, the ambient temperature during dryer operation is first obtained. Then, based on the ambient temperature, the ventilation fan selectively executes the first, second, or third operating logic. Thus, in different seasons, the ventilation fan can adaptively select the appropriate operating logic based on the ambient temperature, more effectively ventilating the dryer's interior and reducing the dryer's energy consumption.
[0217] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A dryer control method, characterized in that, The steps for controlling the operation of the ventilation fan in a clothes dryer include: S1. Obtain the ambient temperature of the dryer during operation; S2. Determine whether the ambient temperature is greater than the first preset temperature; If so, proceed to step S3; If not, then control the ventilation fan to execute the first operating logic; S3. Determine whether the ambient temperature is greater than the second preset temperature, wherein the second preset temperature is greater than the first preset temperature; If not, then control the ventilation fan to execute the second operating logic; If so, then control the ventilation fan to execute the third operating logic.
2. The dryer control method according to claim 1, characterized in that, Step S1 includes the following steps: S11. Obtain the cooling time of the dryer, wherein the cooling time is the time interval between the current moment and the moment when the dryer last finished drying; S12. Determine whether the cooling time is greater than the preset cooling duration; If so, the temperature value obtained by the temperature sensor of the dryer is the ambient temperature. At the same time, the temperature value obtained by the temperature sensor is backed up to obtain a backup value. If not, then the ambient temperature is the backup value.
3. The dryer control method according to claim 2, characterized in that, Step S11 includes: S111. Record the time when the dryer last ended its operation, which is the first moment; S112. Record the time when the dryer starts running this time. This time is the second time. The time interval between the second time and the first time is the cooling time.
4. The dryer control method according to claim 1, characterized in that, The first operating logic includes: The duration t of the current drying cycle performed by the dryer is recorded in real time. Determine whether t is less than a first preset duration value; If so, then control the ventilation fan to turn off; If not, the ventilation fan is controlled to perform a cyclical action sequence of continuously turning on for a first time period and then continuously turning off for a second time period, wherein the first time period is longer than the second time period.
5. The dryer control method according to claim 4, characterized in that, The sequence of controlling the ventilation fan to continuously turn on for a first time period and then continuously turn off for a second time period if the t is greater than or equal to the first preset duration value includes: The first preset duration is a. When bx+1≤t≤b(x+1), the ventilation fan is turned on. When b(x+1)<t<b(x+1)+1, the ventilation fan is turned off. Here, x is a positive integer not less than the first value, and b is obtained by rounding the result of a divided by x.
6. The dryer control method according to claim 4, characterized in that, The second operating logic includes: The duration t of the current drying cycle performed by the dryer is recorded in real time. Determine whether t is less than the second preset duration value; If so, then control the ventilation fan to turn off; If not, the ventilation fan is controlled to perform a cyclical action sequence of continuously turning on for a third time period and then continuously turning off for a fourth time period, wherein the third time period is longer than the fourth time period, and the fourth time period is longer than the second time period.
7. The dryer control method according to claim 6, characterized in that, The sequence of controlling the ventilation fan to continuously turn on for a third time period and then continuously turn off for a fourth time period if the t is greater than or equal to the second preset duration value includes: The second preset duration value is c. When by+1≤t≤by+6, the ventilation fan is turned on, and when by+6<t<b(y+1)+1, the ventilation fan is turned off. Here, y is a positive integer not less than the second value, and b is obtained by rounding the result of c divided by y.
8. The dryer control method according to claim 7, characterized in that, The second value is ≤3.
9. The dryer control method according to claim 1, characterized in that, The third operational logic includes: The duration t of the current drying cycle performed by the dryer is recorded in real time. Determine whether t is less than a third preset duration value; If so, then control the ventilation fan to turn off; If not, then control the ventilation fan to turn on.
10. A clothes dryer, comprising a dryer housing, wherein a ventilation fan is provided inside the dryer housing, characterized in that, The operation of the ventilation fan is controlled by the dryer control method as described in any one of claims 1-9.