CN107724028B - Drying method for washing and drying integrated machine and washing and drying integrated machine - Google Patents
Drying method for washing and drying integrated machine and washing and drying integrated machine Download PDFInfo
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- CN107724028B CN107724028B CN201610657184.8A CN201610657184A CN107724028B CN 107724028 B CN107724028 B CN 107724028B CN 201610657184 A CN201610657184 A CN 201610657184A CN 107724028 B CN107724028 B CN 107724028B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/36—Flow or velocity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/44—Current or voltage
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
Abstract
The invention relates to the technical field of clothes drying, in particular to a drying method for a washing and drying integrated machine and the washing and drying integrated machine. The drying method comprises a low-speed shaking-dispersing step, a constant-speed heating step and an accelerated drying step, wherein the accelerated drying step is finished after third preset time is executed in the accelerated drying step, and/or after the temperature in the inner cylinder reaches a stable state, and/or after the difference value between the temperature in the inner cylinder and the temperature of water in the outer cylinder reaches the stable state. Therefore, different rotating speeds are adopted in the uniform heating step and the accelerated drying step, so that hot air is better contacted with the drying objects in the middle and the rear of the inner cylinder, the overall drying uniformity of the drying objects is improved, the drying performance is improved, whether the accelerated drying step is finished or not is judged by adopting one time condition and two temperature conditions respectively or in combination, and the set time for finishing is more reasonable. The washing and drying integrated machine adopts the drying method, so that the drying performance is improved, and the whole drying process is optimized.
Description
Technical Field
The invention relates to the technical field of clothes drying, in particular to a drying method for a washing and drying integrated machine and the washing and drying integrated machine.
Background
The washing and drying integrated machine with larger capacity can meet the requirements of a user on drying larger drying objects (such as clothes, bed sheets and the like) and more drying objects, and is popular with the user. In addition, with continuous upgrading and optimization of large-capacity washing and drying integrated machines in the industry, the large-capacity washing and drying integrated machine becomes the development direction of the industry. Among them, meeting the requirement of the user for the drying degree of the drying object becomes the research direction and trend of products in the industry at present.
The drying principle of the washing and drying integrated machine at present is as follows: the air is heated by a heater (such as a group of heating wires), the heated air is blown into the inner cylinder by the fan to form hot air, the drying object in the inner cylinder is heated to evaporate water in the drying object into high-temperature high-humidity steam, the high-temperature high-humidity steam is sucked into the condenser by the negative pressure formed by the axial flow fan, the high-temperature high-humidity steam is condensed in the condenser to form condensed water, the condensed water flows down along the outer wall of the exchanger, and the cooled air is continuously circulated. In the existing drying process, the inner cylinder is set to rotate at a constant speed in a positive and negative rotation mode at a fixed rotation speed and a fixed rotation-stop ratio, so that the drying object is dried uniformly. However, as the capacity of the drying object increases, especially when the drying capacity exceeds half of the washing capacity, the drying degree of the drying object at different positions in the inner drum is not uniform, wherein the drying degree of the drying object at the middle part of the inner drum and at the rear part of the inner drum (a part far away from the hot air blowing end) is poor, and the problem of poor drying uniformity of the whole drying object is caused.
Disclosure of Invention
The invention aims at one aspect that: the drying method for the washing and drying integrated machine is provided, and solves the problem that the overall drying uniformity of a drying object is poor due to the fact that the drying degree of the drying object in the middle and at the rear of an inner cylinder is poor.
Another aspect of the present invention is directed to: the utility model provides a wash dry all-in-one, this wash dry all-in-one does not exist because of the dry degree of the dry object at inner tube middle part and rear portion is poor and leads to the poor problem of dry object whole drying degree of consistency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a drying method for a washing and drying integrated machine, which comprises the following steps: a low-speed shaking step, wherein the inner cylinder rotates at a first rotating speed capable of shaking and scattering the drying object; a uniform heating step, rotating the inner cylinder at a second rotating speed which is greater than the first rotating speed and starting to convey hot air into the inner cylinder; an accelerated drying step, wherein the inner barrel rotates alternately at a second rotating speed and a third rotating speed which can enable the drying object to form a channel in the middle of the inner barrel under the action of centrifugal force, wherein the third rotating speed is greater than the second rotating speed; and finishing the accelerated drying step after the accelerated drying step is executed for a third preset time, and/or after the temperature in the inner cylinder reaches a stable state, and/or after the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state.
According to the invention, the third preset time is determined by the following method: and calculating the time required by the moisture content of the drying object to be lower than 10% according to the total weight of the drying object and the highest rotating speed which can be reached when the washing program is dewatered, wherein the time is used as a third preset time.
According to the invention, in the low-speed dithering step: the first rotating speed is in the range of 20 rpm-30 rpm, the inner cylinder rotates forward and backward alternately, and the rotating-stopping ratio is 120s:5 s; in the uniform heating step: the second rotating speed is within the range of 30-60 rpm, the inner cylinder rotates forward and backward alternately, and the rotating-stopping ratio is 50s:5 s; in the step of accelerating drying: the third rotating speed is in the range of 90-120 rpm, the inner cylinder rotates in a positive and negative alternating mode, and the time ratio of the rotation of the inner cylinder at the third rotating speed to the rotation of the inner cylinder at the second rotating speed is 5-10 min: 5-10 min.
According to the present invention, after the step of accelerating drying, the method further comprises: a speed and wrinkle reducing step, wherein the inner cylinder rotates at a fourth rotating speed which can reduce wrinkles of the drying object, and the fourth rotating speed is less than the third rotating speed; and a speed increasing cooling step, wherein the inner cylinder rotates at a fifth rotating speed which is greater than the fourth rotating speed, the hot air conveying is stopped, and cold air is conveyed into the inner cylinder, so that the temperature of the drying object is reduced.
According to the invention, it also comprises: a first comparison step before the accelerated drying step, wherein the first comparison step is as follows: comparing the total weight of the drying object with a first preset value; when the total weight of the drying object is smaller than a first preset value, directly entering a speed reduction and wrinkle reduction step after the uniform heating step is finished; and when the total weight of the drying object is more than or equal to a first preset value, entering an accelerated drying step after the uniform heating step is finished.
According to the invention, it also comprises: a second comparison step before the speed-reducing and wrinkle-reducing step, wherein the second comparison step is as follows: comparing the total weight of the drying object with a second preset value; when the total weight of the drying object is larger than a second preset value, executing a speed reduction and wrinkle reduction step before the speed increasing cooling step; and when the total weight of the drying object is less than a second preset value, the speed reduction and wrinkle reduction step is cancelled.
According to the invention, after the low-speed shaking step is executed for the first preset time, the low-speed shaking step is ended and the next step is carried out.
According to the invention, after the constant-speed heating step is executed for a second preset time, and/or after the temperature in the inner cylinder reaches a stable state, and/or after the difference value between the temperature in the inner cylinder and the temperature of water in the outer cylinder reaches a stable state, the constant-speed heating step is ended and the next step is carried out.
According to the invention, in the speed-reducing and wrinkle-reducing step: the fourth rotating speed is within the range of 20 rpm-30 rpm, the inner cylinder rotates forward and backward alternately, and the rotating-stopping ratio is 120s:5 s; in the accelerated cooling step: the fifth rotating speed is in the range of 30 rpm-60 rpm, the inner cylinder rotates forwards and backwards alternately, and the rotating-stopping ratio is 50s:5 s.
The invention further provides a washing and drying integrated machine, and any one of the drying methods for the washing and drying integrated machine is adopted.
The technical scheme of the invention has the following advantages:
the drying method for the washing and drying integrated machine comprises the following steps: a low-speed shaking step, in which the inner cylinder rotates at a first rotating speed capable of shaking and scattering the drying object so as to avoid the situation that the inner cylinder is stuck on the wall of the inner cylinder and does not fall off and cannot be dried in the subsequent step; a uniform heating step, namely increasing the rotating speed of the inner cylinder, rotating the inner cylinder at a second rotating speed which is greater than the first rotating speed and starting to convey hot air into the inner cylinder, wherein the drying object is relatively wet, the drying object rotates intensively, is heated uniformly and is high in drying speed; and an accelerated drying step, wherein the inner cylinder rotates alternately at a second rotating speed and a third rotating speed which enables the drying object to form a channel in the middle of the inner cylinder under the action of centrifugal force, the third rotating speed is greater than the second rotating speed, when the inner cylinder rotates at the third rotating speed, the drying object moves towards the inner cylinder wall due to the increase of the centrifugal force, a channel extending from front to back is formed in the middle of the inner cylinder around the rotating axis of the inner cylinder, part of hot air can be guided to the drying object located in the middle of the inner cylinder and the drying object at the rear part of the inner cylinder by the channel, and then the drying object is mainly dried aiming at the part of the drying object, when the inner cylinder rotates at the second rotating speed, the drying object moves loosely along the direction far away from the inner cylinder wall due to the decrease of the centrifugal force, and heating of the drying object originally close to the inner cylinder wall is also ensured. Therefore, on the basis of ensuring that the drying object is in a shaking and scattering state in the low-speed shaking and scattering step, different rotating speeds are adopted in the uniform-speed heating step and the accelerated drying step, so that the hot air is better contacted with the drying object in the middle and the rear part of the inner cylinder, the integral drying uniformity of the drying object is improved, and the drying performance is improved. In addition, the accelerated drying step is finished after the accelerated drying step is carried out for a third preset time, and/or after the temperature in the inner cylinder reaches a stable state, and/or after the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state. Therefore, the invention designs a time condition and two temperature conditions to respectively or jointly judge whether to finish the accelerated drying step, and the finishing time is set more reasonably, so that the whole drying process is also optimized.
The washing and drying integrated machine adopts the drying method for the washing and drying integrated machine. Therefore, the washing and drying integrated machine can enable the hot air to be in better contact with the drying object in the middle and at the rear part of the inner cylinder, the overall drying uniformity of the drying object is improved, and the drying performance is improved. In addition, a time condition and two temperature conditions are designed to respectively or jointly judge whether the accelerated drying step is finished, so that the finishing time of the accelerated drying step is more reasonable, and the whole drying process is optimized.
Drawings
FIG. 1 is a schematic diagram of a prior art drying method for a washer dryer;
FIG. 2 is a schematic flow chart of a drying method for a washing and drying integrated machine according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a method for determining a first preset time for ending the low-speed shaking step in the drying method of fig. 2;
fig. 4 is a timing diagram illustrating a weight sensing method of the drying object in fig. 3;
fig. 5 is a timing diagram illustrating a drying object material method in fig. 3;
FIG. 6 is a timing diagram of the fixed time method of FIG. 3;
FIG. 7 is a timing diagram of the speed feedback method of FIG. 3;
fig. 8 and 9 are a schematic flowchart and a schematic timing chart when the conditions for ending the uniform heating step and entering the next step in the drying method in fig. 2 are time conditions;
fig. 10 and 12 are a schematic flowchart and a schematic timing chart illustrating a case where the condition for ending the constant velocity heating step and proceeding to the next step in the drying method of fig. 2 is a temperature condition;
FIG. 11 is a schematic diagram of a corresponding structure when the temperature conditions of FIG. 10 are employed;
fig. 13 is a schematic flow chart of the drying method in fig. 2 when the condition for ending the constant velocity heating step and entering the next step is another temperature condition;
fig. 14 and 15 are a schematic flowchart and a schematic timing chart in the case where the condition for ending the acceleration drying step and proceeding to the speed-reduction and wrinkle-reduction step in the drying method in fig. 2 is a time condition;
fig. 16 and 17 are a schematic flowchart and a schematic timing chart in the case where the condition for ending the acceleration drying step and proceeding to the deceleration wrinkle reducing step in the drying method in fig. 2 is a temperature condition;
fig. 18 is a schematic flow chart of the case where the condition for ending the acceleration drying step and proceeding to the speed-reduction wrinkle-reduction step in the drying method of fig. 2 is another temperature condition.
In the figure:
t1first preset time; t is t2The second preset time; t is t3The third preset time; 1: a first sensor; 2: a second sensor; 3: an electric motor.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
Referring to fig. 1, the drying principle of the present washing and drying integrated machine is as follows: the air is heated by a heater (such as a set of heating wires), the heated air (namely hot air) is blown into the inner cylinder by the fan to form hot air, the drying object in the inner cylinder is heated to evaporate moisture in the drying object into high-temperature and high-humidity steam, the high-temperature and high-humidity steam is sucked into the condenser by the negative pressure formed by the axial flow fan, the high-temperature and high-humidity steam is condensed in the condenser to form condensed water, the condensed water flows down along the outer wall of the exchanger, and the cooled air is continuously circulated. In the existing drying process, the inner cylinder is set to rotate at a constant speed in a positive and negative rotation mode at a fixed rotation speed and a fixed rotation-stop ratio, so that the drying object is dried uniformly. However, as the capacity of the drying object increases, especially when the drying capacity exceeds half of the washing capacity, the drying uniformity of the drying object at different positions in the inner drum is poor, wherein the drying degree of the drying object in the middle of the inner drum and at the rear of the inner drum (a part far away from the hot air blowing end) is inferior to that of the drying object at the front of the inner drum and the drying object near the inner drum wall, thereby causing a problem of poor drying uniformity of the whole drying object.
Therefore, in the present embodiment, a drying method for a washing and drying integrated machine is provided. The drying method solves the problem of poor overall drying uniformity of the drying object caused by poor drying degree of the drying object in the middle and the rear part of the inner cylinder.
Referring to fig. 2, the drying method is performed after the washing process is finished, and includes the following steps:
and a low-speed shaking step, wherein the inner cylinder rotates at a first rotating speed capable of shaking the drying object so as to avoid the condition that the drying object cannot be dried in the subsequent step because the drying object is not dropped off when being attached to the wall of the inner cylinder. Particularly, the drying object at the highest position can only be peeled off the inner cylinder wall due to self gravity when the drying object is completely static, so that the low-speed rotation is adopted to be beneficial to peeling off the inner cylinder wall by all the drying objects depending on the self gravity, and the inner cylinder rotates at a lower first rotating speed at the initial stage of drying so that the drying object is separated from the inner cylinder wall through the self gravity. In this embodiment, the first rotational speed is in the range of 20rpm to 30rpm, the rotation-to-stop ratio of the inner tube is 120s:5s and the inner tube is alternately rotated forward and reverse (i.e., forward rotation 120 s-stop 5 s-reverse rotation 120 s-stop 5 s-forward rotation 120s … …). At this stage, the heater is not turned on, so that misjudgment of automatic drying termination caused by non-falling of the drying object is avoided.
And a uniform heating step, namely, the rotating speed of the inner barrel is increased, the inner barrel rotates at a second rotating speed which is higher than the first rotating speed, and the heater and the fan are started to convey hot air into the inner barrel, so that the drying object is wet, the drying object rotates intensively, is heated uniformly, and is high in drying speed. Wherein, the rotating speed of the inner cylinder is increased to ensure that the drying object can contact hot air to the maximum extent. But the rotating speed cannot be increased too much to avoid the phenomenon that the gap between the drying objects is too small and the hot air cannot uniformly pass through. In this embodiment, the second speed is in the range of 30rpm to 60rpm, the inner barrel is alternately rotated forward and reverse with a spin-to-stop ratio of 50s:5s (i.e., forward rotation 50 s-stall 5 s-reverse rotation 50 s-stall 5 s-forward rotation 50s … …).
An accelerated drying step, wherein the inner cylinder rotates alternately at a second rotating speed and a third rotating speed which enables the drying object to form a channel in the middle of the inner cylinder under the action of centrifugal force, wherein the third rotating speed is higher than the second rotating speed, when the inner cylinder rotates at the third rotating speed, the drying object moves towards the inner cylinder wall due to the increase of the centrifugal force, a channel which extends from front to back is formed in the middle of the inner cylinder around the rotating axis of the inner cylinder, and the channel can guide part of hot air to the drying object in the middle of the inner cylinder and the drying object at the rear part of the inner cylinder, so that the drying is mainly performed on the part of the drying object; when the inner cylinder rotates at the second rotating speed, the drying object moves and loosens along the direction far away from the inner cylinder wall due to the fact that centrifugal force becomes small, and therefore heating of the drying object which is close to the inner cylinder wall originally is also guaranteed. Specifically, in this embodiment, after entering the step of accelerated drying, the inner cylinder is first rotated at a third rotation speed, the third rotation speed is in a range of 90rpm to 120rpm, the drying is continued for 5 to 10min at this rotation speed, then the rotation speed of the inner cylinder is restored to the original second rotation speed, the drying is continued for 5 to 10min at this rotation speed, then the rotation speed of the inner cylinder is changed to the third rotation speed again for 5 to 10min, and simultaneously, the inner cylinder is rotated in a forward and reverse direction. Namely, the forward direction is operated at the third rotating speed for 5-10 min, the forward direction is operated at the second rotating speed for 5-10 min, the reverse direction is operated at the third rotating speed for 5-10 min, the reverse direction is operated at the second rotating speed for 5-10 min, and the forward direction is operated at the third rotating speed for 5-10 min … ….
And a speed and wrinkle reducing step, wherein the inner cylinder rotates at a fourth rotating speed which can reduce wrinkles of the drying object, and the fourth rotating speed is less than the third rotating speed. At this stage, the moisture content of the drying object is relatively low, the fourth rotation speed is in the range of 20 rpm-30 rpm, the inner drum is alternately rotated forward and backward, and the rotation-stop ratio is 120s:5s (i.e., forward rotation 120 s-stop 5 s-reverse rotation 120 s-stop 5 s-forward rotation 120s … …).
And a speed-increasing cooling step, wherein the surface temperature of the dried object is higher after the drying process, so that the temperature needs to be reduced. In this step, the inner drum rotates at a fifth rotation speed greater than the fourth rotation speed, and the operation of the heater is stopped to stop the supply of the hot air and the supply of the cold air into the inner drum to lower the temperature of the drying object. And the fifth rotating speed is within the range of 30-60 rpm, so that the drying object rotates densely at a constant speed, and the temperature is reduced uniformly. Preferably, the fifth rotational speed is equal to the second rotational speed. And the inner cylinder rotates forward and backward alternately with a rotation-stop ratio of 50s:5s (i.e., normal rotation 50 s-stall 5 s-reverse rotation 50 s-stall 5 s-normal rotation 50s … …).
In summary, the drying method of the embodiment defines a set of complete drying process from the perspective of the rotation speed to overcome the disadvantage of uneven drying in the existing drying method, and changes the rotation speed and the rotation-stop ratio of the inner drum (realized by controlling the rotation speed and the rotation-stop ratio of the inner drum motor), so that the drying uniformity of the drying object is higher. On the basis of ensuring that the drying object is in a shaking state in the low-speed shaking step, different rotating speeds are adopted in the constant-speed heating step and the accelerated drying step, so that hot air is in better contact with clothes in the middle and the rear part of the inner drum, the integral drying uniformity of the drying object is improved, and the drying performance is improved; and after the main drying process is finished, the speed reduction and wrinkle reduction steps are carried out, so that the flatness of the drying object can be improved.
Further, under the condition that the volume of the inner barrel is fixed, the drying object with small weight can be kept in a fluffy state all the time at the second rotating speed, and the drying objects in the middle and the rear part of the inner barrel can be uniformly heated relatively well, so that the time for carrying out the accelerated drying step can be relatively short, and the step is not even required. In this embodiment, in order to improve the drying efficiency, reduce the drying time and power consumption on the basis of ensuring the drying effect, before entering the step of drying at an accelerated speed, for example, a first comparison step is performed after the step of heating at a constant speed is completed, and the total weight of the drying object is compared with a first preset value. When the total weight of the drying object is smaller than a first preset value, directly entering a speed reduction and wrinkle reduction step after the uniform heating step is finished; and when the total weight of the drying object is more than or equal to a first preset value, entering an accelerated drying step after the uniform heating step is finished. That is, the accelerated drying step is selectively performed based on the total weight of the drying object.
Furthermore, under the condition that the volume of the inner drum is fixed, the drying object with small weight can be always kept in a fluffy state at the second rotating speed, and even the speed reduction and wrinkle reduction steps are not needed. In this embodiment, in order to improve the drying efficiency, reduce the drying time and reduce power consumption on the basis of ensuring the flatness of the drying object, the second comparison step is performed before entering the speed-reducing and wrinkle-reducing step, and the total weight of the drying object is compared with the second preset value. When the total weight of the drying object is larger than a second preset value, a speed reducing and wrinkle reducing step must be performed before the speed increasing and cooling step to ensure the flatness of the drying object; and when the total weight of the drying object is smaller than a second preset value, the speed reduction and wrinkle reduction step is cancelled, namely, the speed increasing cooling step is directly carried out from the uniform speed heating step when the speed increasing drying step is cancelled or the speed increasing drying step is cancelled.
Further, the condition for ending the low speed shaking step and proceeding to the next step (uniform heating step) is a time condition in the present embodiment, that is, when the low speed shaking step is performed for a first preset time (t in the figure)1Shown), the low speed shaking step is ended and the constant speed heating step is entered. Referring to fig. 3, the first preset time may be determined in four ways. In addition, the step of determining the first preset time may be performed at any time before the step of shaking at the low speed, and in fig. 3, taking the example of determining the first preset time before the washing procedure starts, the step of shaking at the low speed is entered after the washing is finished, and the step of shaking at the low speed is performed at intervals or continuously during the step of shaking at the low speedAnd judging whether the first preset time is reached.
Specifically, referring to fig. 4, the drying object with a small weight grade is more easily attached to the inner cylindrical wall due to a large centrifugal force and a small mass at a high rotation speed, and is difficult to fall off, requiring a longer shaking time; under the condition of high rotating speed of drying objects with large weight grade, because the quantity of the drying objects is large, the drying objects have extrusion effect and are easy to stick on the inner cylinder wall, and longer shaking time is needed; the probability that drying objects with other weight grades are attached to the inner cylinder wall is relatively small, and the time for separating the drying objects from the inner cylinder wall is relatively short. Accordingly, the first preset time may be determined according to the total weight of the drying object. Wherein, at any time before the low-speed shaking step, the total weight of the drying object is sensed, and then a first preset time is determined according to the sensed weight. This manner may be referred to as a drying object weight sensing method, and the first preset time determined by this manner is advantageous to shorten the total time for the drying process to be operated. The first preset time is obtained by searching a table after the total weight of the drying object is collected; the total weight of the drying object can also form a functional relation with the first preset time, and the first preset time is obtained through calculation after the total weight of the drying object is collected. Of course, the present invention is not limited thereto, and in other embodiments, the total weight of the drying object and the first preset time may be associated in other manners.
Specifically, referring to fig. 5, the drying objects made of different materials are attached to the inner cylindrical wall at different times, and the drying objects made of cotton are easily attached to the inner cylindrical wall after rotating at a high speed; the drying object of chemical fiber can be automatically separated from the inner cylinder even without shaking after rotating at high speed. Therefore, the first preset time may be determined according to the material of the drying object. For example, at any time before the low-speed shaking step, the material of the drying object is obtained, wherein the material of the drying object may be sensed (through RFID technology) or selected by the user himself, and then the first preset time is determined according to all the materials in the drying object. This method may be called a drying object material method. The material of the drying object and the first preset time can be preset to be in one-to-one correspondence, that is, the first preset time can be obtained by looking up a table after the material of the drying object is collected; the material of the drying object can form a functional relation with the first preset time, and the first preset time is obtained through calculation after the material of the drying object is collected. Of course, the present invention is not limited thereto, and in other embodiments, the material of the drying object and the first preset time may be associated in other manners.
Specifically, referring to fig. 6, in order to effectively ensure shaking-out of the drying objects, a first preset time may be determined according to the worst case, so that the drying objects of all levels adopt the same time value, which is fixed. This approach may be referred to as a fixed time approach.
Specifically, referring to fig. 7, different rotation speeds and different centrifugal forces vary with time during which the drying object is shaken off. Under the condition that the actual maximum rotating speed of the inner cylinder can be detected, different first preset time is determined according to different maximum rotating speeds reached by the inner cylinder. This approach may be referred to as a rotational speed feedback method. The actual maximum rotating speed of the inner cylinder and the first preset time can be preset to be in one-to-one correspondence relationship, namely, the first preset time can be obtained by looking up a table after the actual maximum rotating speed of the inner cylinder is collected; the actual maximum rotating speed of the inner cylinder can form a functional relation with the first preset time, and the first preset time is obtained through calculation after the actual maximum rotating speed of the inner cylinder is collected. Of course, the present invention is not limited to this, and in other embodiments, the actual maximum rotation speed of the inner cylinder may be related to the first preset time in other manners.
In summary, the first preset time can be determined by the above four methods alone or in combination of a plurality of the four methods. The case of multiple combinations is any two or three of the above four ways, or the above four ways, wherein different ways are in different priorities. For example, the first preset time is preferentially determined by a drying object weight sensing method or a drying object material method, and when the first preset time cannot be determined, the first preset time is determined by a fixed time method. From this, through above-mentioned four kinds of modes, confirm according to operating condition and tremble scattered time, improved drying efficiency.
Particularly, according to any one of a drying object weight sensing method, a rotating speed feedback method and a drying object material method or a combination of any more of the three methods and a fixed time method, compared with the condition that the shaking-up time is a fixed value, the method is more targeted, and the drying efficiency can be obviously improved.
Further, the condition for ending the constant-speed heating step and proceeding to the next step (the speed-up drying step or the speed-down wrinkle-reducing step) is a time condition or a temperature condition in this embodiment.
Specifically, referring to fig. 8 and 9, the time condition is: when the uniform heating step is performed for a second preset time (denoted by t in the figure)2Shown), the constant velocity heating step is ended and the next step is entered. After the moisture content of the drying object is gradually reduced to 10% -30%, under the condition that the current drying object distribution is kept, water on the drying object is difficult to analyze, and mainly because the drying objects in the middle and the rear of the inner cylinder are limited by space, relatively less hot air can be contacted. Therefore, if it is necessary to further improve the drying efficiency, it is necessary to adjust the distribution of the drying object, i.e., to enter the acceleration drying step. After the total weight of the drying object is sensed, the total running time of the whole drying program can be calculated by combining the highest rotating speed which can be reached when the washing program is dehydrated. The time required for the moisture content of the drying object to reach 10% -30% can be indirectly calculated according to the total running time of the program, and the time is the second preset time.
Referring to fig. 8 and 9, the determining of the second preset time may be performed at any time before the uniform heating step, and taking the flow shown in fig. 8 as an example, the total weight of the drying object is sensed before the washing process starts, an initial second preset time is set according to the total weight of the drying object, and then the washing process is entered, and the initial second preset time is modified according to the actual highest rotation speed in the washing process to obtain the second preset time. And then ending the washing program, entering a low-speed shaking step, entering a constant-speed heating step after the low-speed shaking step is ended, intermittently or continuously judging whether a second preset time is reached in the execution process of the constant-speed heating step, ending the constant-speed heating step and entering the next step (such as an accelerated drying step) after the constant-speed heating step is executed for the second preset time.
Specifically, referring to fig. 10 to 12, in the course of performing the constant velocity heating step, it is intermittently or continuously determined whether the above temperature condition is reached. The temperature conditions may be: and when the temperature in the inner cylinder reaches a stable state, ending the constant-speed heating step and entering the next step. Specifically, in the uniform heating step, the first sensor 1 (see fig. 11, and also the motor 13 shown in fig. 11) is used to measure the temperature of the inner cylinder, and the temperature in the inner cylinder gradually rises first and then becomes stable to reach a stable state. Wherein, the temperature value which tends to be stable is a variable amount because of different environmental temperatures, different relative humidities, different temperatures of the condensing medium, and the like. When the temperature in the inner cylinder reaches the stable temperature, the heat in the washing and drying integrated machine/dryer reaches the dynamic balance indirectly, which also indicates that no further drying effect exists at the current rotating speed. Therefore, the next step needs to be entered.
Specifically, referring to fig. 13, the temperature conditions may also be: and when the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state, ending the constant-speed heating step and entering the next step. Specifically, in the constant-speed heating step, the second sensor 2 is used for measuring the temperature of the water in the outer barrel, the temperature of the water in the outer barrel can also reach a stable value, but the second sensor 2 is far away from the position where hot air is fed, the response is relatively slow, and the constant-speed heating step can be used as an auxiliary control condition. After the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state, the fact that the heat in the washing and drying integrated machine/clothes dryer reaches dynamic balance is indirectly shown, and the effect that the washing and drying integrated machine/clothes dryer does not further dry when the washing and drying integrated machine/clothes dryer continues to rotate at the current rotating speed is also shown. Therefore, the next step needs to be entered.
The conditions for ending the uniform heating step and proceeding to the next step may be a combination of the above two temperature conditions or a combination of the above time condition and one or two temperature conditions, i.e., the above conditions must be simultaneously achieved. For example, after the constant velocity heating step is performed for a second preset time and the temperature in the inner cylinder reaches a stable state, the constant velocity heating step is ended and the next step is performed.
Further, the condition for ending the accelerated drying step is a time condition or a temperature condition in the present embodiment. In this embodiment, since there are other steps after the step of accelerated drying, the condition for ending the step of accelerated drying is also the condition for ending the step of accelerated drying and entering the step of reducing the speed and wrinkles.
Specifically, referring to fig. 14 and 15, in the course of performing the acceleration drying step, it is intermittently or continuously judged whether the above-described time condition is reached. Specifically, the time conditions are as follows: when the accelerated drying step is performed for a third preset time (denoted by t in the figure)3Shown), the accelerated drying step is finished and the next step (the speed reducing and wrinkle reducing step) is carried out. Wherein, when the moisture content of the drying object is gradually reduced to less than 10%, the moisture content of the drying object is relatively low and the time from the drying is relatively short. If the drying object continues to operate at a relatively high rotation speed, wrinkles of the drying object are more and more increased and flatness is deteriorated in a high temperature state due to a centrifugal force and a pressing force between the drying objects. Therefore, in this case, it is necessary to reduce the rotation speed of the inner drum to ensure good flatness of the drying object. After the total weight of the drying object is sensed, the total operation time of the whole drying program can be calculated by combining the highest rotating speed which can be reached when the washing program is dehydrated. The time required for the moisture content of the laundry to be less than 10% may be indirectly calculated from the time of the program operation, and this time is taken as the third preset time.
Referring to fig. 14 and 15, the determining of the third preset time may be performed at any time before the acceleration drying step, and taking the flow shown in fig. 14 as an example, the total weight of the drying object is sensed before the washing process is started, an initial third preset time is set according to the total weight of the drying object, and then the washing process is entered, and the initial third preset time is corrected according to the actual maximum rotation speed in the washing process to obtain the third preset time. And then ending the washing program, entering a low-speed shaking step, entering a constant-speed heating step after the low-speed shaking step is ended, entering an accelerated drying step after the constant-speed heating step is ended, judging whether the third preset time is reached at intervals or continuously in the execution process of the accelerated drying step, ending the accelerated drying step and entering a speed-reducing and wrinkle-reducing step after the third preset time is executed in the constant-speed heating and accelerated drying step.
Specifically, referring to fig. 16 and 17, in the course of performing the acceleration drying step, it is intermittently or continuously judged whether the above-described temperature condition is reached. The temperature conditions may be: and when the temperature in the inner cylinder reaches a stable state, ending the step of accelerating drying and entering the step of reducing the speed and the wrinkles. Specifically, in the step of accelerated drying, the temperature in the inner cylinder gradually rises again after reaching equilibrium in the step of uniform heating, and then becomes stable again to reach a stable state. Wherein, the temperature value which tends to be stable is a variable amount because of different environmental temperatures, different relative humidities, different temperatures of the condensing medium, and the like. When the temperature in the inner cylinder reaches the stable temperature, the heat in the washing and drying integrated machine/dryer reaches the dynamic balance indirectly, which also indicates that the washing and drying integrated machine/dryer continues to rotate at the current rotating speed and has no further drying effect. Therefore, the next step needs to be entered.
Specifically, referring to fig. 18, the temperature conditions may also be: and when the difference between the temperature in the inner cylinder and the water temperature in the outer cylinder reaches a stable state, ending the step of accelerating drying and entering the step of reducing the speed and the wrinkles. Specifically, in the step of accelerated drying, the water temperature of the outer drum also reaches a stable value again, but the sensor is far away from the position where hot air is fed, and the response is relatively slow, so that the sensor can be used as an auxiliary control condition. After the difference value between the temperature in the inner cylinder and the water temperature in the outer cylinder reaches a stable state, the fact that the heat inside the washing and drying integrated machine/clothes dryer reaches dynamic balance is indirectly shown, and the effect that the washing and drying integrated machine/clothes dryer does not further dry when the washing and drying integrated machine/clothes dryer continues to rotate at the current rotating speed is also shown. Therefore, the next step needs to be entered.
The condition for ending the accelerated drying step and entering the speed-reducing and wrinkle-reducing step can also be a combination of the two temperature conditions or a combination of the time condition and one or two temperature conditions, namely, the conditions are required to be achieved simultaneously. For example, after the accelerated drying step is executed for a third preset time and the temperature in the inner drum reaches a stable state, the accelerated drying step is ended and the speed reduction and wrinkle reduction step is performed.
In this embodiment, a time condition and two temperature conditions are designed to determine whether to finish the step of accelerated drying respectively or in combination, so that the timing for finishing the step of accelerated drying is more reasonable, and the whole drying process is optimized.
Further, the condition for ending the speed-reducing and wrinkle-reducing step and entering the speed-increasing cooling step is also preferably a time condition, that is, after the speed-reducing and wrinkle-reducing step is performed for a fixed time, the speed-reducing and wrinkle-reducing step is ended and the speed-increasing cooling step is entered. Of course, the invention is not so limited and other conditions may be used in other embodiments to determine when to end the de-speeding and de-wrinkling step.
Example two
In this embodiment, a washing and drying all-in-one machine is provided, and the washing and drying all-in-one machine adopts the drying method for the washing and drying all-in-one machine in the embodiment. Therefore, the washing and drying integrated machine can enable the hot air to be in better contact with the drying object in the middle and at the rear part of the inner cylinder, the overall drying uniformity of the drying object is improved, and the drying performance is improved. In addition, a time condition and two temperature conditions are designed to respectively or jointly judge whether the accelerated drying step is finished, so that the finishing time of the accelerated drying step is more reasonable, and the whole drying process is optimized.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. A drying method for a washing and drying integrated machine is characterized by comprising the following steps:
a low-speed shaking step, wherein the inner cylinder rotates at a first rotating speed capable of shaking and scattering the drying object;
a uniform heating step, wherein the inner cylinder rotates at a second rotating speed which is higher than the first rotating speed and starts to convey hot air into the inner cylinder;
an accelerated drying step, wherein the inner cylinder rotates alternately at the second rotating speed and a third rotating speed which can enable the drying object to form a channel in the middle of the inner cylinder under the action of centrifugal force, wherein the third rotating speed is greater than the second rotating speed;
wherein, after the accelerated drying step is executed for a third preset time, and/or when the temperature in the inner cylinder reaches a stable state, and/or when the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state, the accelerated drying step is finished;
after the step of accelerating drying, the method further comprises the following steps:
a speed and wrinkle reducing step of rotating the inner drum at a fourth rotation speed capable of reducing wrinkles of the drying object, wherein the fourth rotation speed is less than the third rotation speed;
and a speed-increasing cooling step, wherein the inner cylinder rotates at a fifth rotating speed which is greater than the fourth rotating speed, the hot air delivery is stopped, and cold air is delivered into the inner cylinder, so that the temperature of the drying object is reduced.
2. The drying method for washing and drying integrated machine according to claim 1,
the method for determining the third preset time comprises the following steps: and calculating the time required by the moisture content of the drying object to be lower than 10% according to the total weight of the drying object and the highest rotating speed which can be reached when the washing program is dewatered, wherein the time is used as the third preset time.
3. The drying method for washing and drying integrated machine according to claim 1,
in the low-speed shaking-up step: the first rotating speed is in the range of 20 rpm-30 rpm, the inner barrel rotates forwards and backwards alternately, and the rotating-stopping ratio is 120s:5 s;
in the uniform heating step: the second rotating speed is within the range of 30-60 rpm, the inner cylinder rotates forwards and backwards alternately, and the rotating-stopping ratio is 50s:5 s;
in the step of accelerated drying: the third rotating speed is within the range of 90-120 rpm, the inner cylinder rotates forwards and backwards alternately, and the time ratio of the rotation of the inner cylinder at the third rotating speed to the rotation of the inner cylinder at the second rotating speed is 5-10 min: 5-10 min.
4. The drying method for a washer dryer as claimed in claim 1, further comprising:
a first comparing step before the accelerated drying step, wherein the first comparing step comprises:
comparing the total weight of the drying object with a first preset value;
when the total weight of the drying object is smaller than the first preset value, directly entering the speed reduction and wrinkle reduction step after the uniform heating step is finished;
and when the total weight of the drying object is more than or equal to the first preset value, entering the accelerated drying step after the uniform heating step is finished.
5. The drying method for a washer dryer as claimed in claim 1, further comprising:
a second comparing step, which is located before the speed-reducing and wrinkle-reducing step, wherein the second comparing step is as follows:
comparing the total weight of the drying object with a second preset value;
when the total weight of the drying object is greater than the second preset value, the speed-reducing and wrinkle-reducing steps are carried out before the speed-increasing cooling step;
and when the total weight of the drying object is less than the second preset value, the speed and wrinkle reducing step is cancelled.
6. The drying method for washing and drying integrated machine according to claim 1,
and when the low-speed shaking step is executed for a first preset time, ending the low-speed shaking step and entering the next step.
7. The drying method for washing and drying integrated machine according to claim 1,
and when the uniform heating step is executed for a second preset time, and/or when the temperature in the inner cylinder reaches a stable state, and/or when the difference value between the temperature in the inner cylinder and the temperature of the water in the outer cylinder reaches a stable state, ending the uniform heating step and entering the next step.
8. The drying method for washing and drying integrated machine according to claim 1,
in the speed and wrinkle reducing step: the fourth rotating speed is within the range of 20 rpm-30 rpm, the inner cylinder rotates forwards and backwards alternately, and the rotating-stopping ratio is 120s:5 s;
in the step of ramping-up cooling: the fifth rotating speed is in the range of 30-60 rpm, the inner barrel rotates forwards and backwards alternately, and the rotating-stopping ratio is 50s:5 s.
9. A washing and drying integrated machine, which is characterized in that the drying method for the washing and drying integrated machine is adopted according to any one of claims 1 to 8.
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| CN201610657184.8A CN107724028B (en) | 2016-08-12 | 2016-08-12 | Drying method for washing and drying integrated machine and washing and drying integrated machine |
| PCT/CN2017/097162 WO2018028688A1 (en) | 2016-08-12 | 2017-08-11 | Drying method for washer-dryer integrated machine and washer-dryer integrated machine |
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| CN201610657184.8A CN107724028B (en) | 2016-08-12 | 2016-08-12 | Drying method for washing and drying integrated machine and washing and drying integrated machine |
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| CN110359226B (en) * | 2018-04-11 | 2021-12-03 | 佛山海尔滚筒洗衣机有限公司 | Control method for laundry treatment apparatus and laundry treatment apparatus |
| CN110857524B (en) * | 2018-08-10 | 2021-10-29 | 青岛海尔洗涤电器有限公司 | Clothes drying method and clothes treatment device applying same |
| CN109944046B (en) * | 2019-04-16 | 2020-07-28 | 珠海格力电器股份有限公司 | Control method and control device of clothes drying equipment and clothes drying equipment |
| CN111058259B (en) * | 2019-12-23 | 2021-05-07 | 珠海格力电器股份有限公司 | Drying method of clothes treatment equipment and clothes treatment equipment |
| CN111809340B (en) * | 2020-07-08 | 2021-10-08 | 珠海格力电器股份有限公司 | Drying control method and device and drying equipment |
| CN113981653A (en) * | 2020-07-27 | 2022-01-28 | 无锡小天鹅电器有限公司 | Clothes treatment equipment, control method and device thereof and storage medium |
| KR20220031304A (en) * | 2020-09-04 | 2022-03-11 | 엘지전자 주식회사 | Laundry Treatment Apparatus and Control Method for the same |
| CN112575528B (en) * | 2020-11-28 | 2022-03-01 | 珠海格力电器股份有限公司 | Clothes dehumidifying method and device and washing machine |
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