CN114753102B - Drying control method of washing and drying integrated machine - Google Patents

Drying control method of washing and drying integrated machine Download PDF

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Publication number
CN114753102B
CN114753102B CN202210467713.3A CN202210467713A CN114753102B CN 114753102 B CN114753102 B CN 114753102B CN 202210467713 A CN202210467713 A CN 202210467713A CN 114753102 B CN114753102 B CN 114753102B
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drying
temperature
control
judging
washing
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CN114753102A (en
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王书斌
衣震旭
李敏照
侯江伟
徐旭亮
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/74—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/20—Parameters relating to constructional components, e.g. door sensors
    • 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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • D06F34/24—Liquid temperature
    • 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
    • D06F2103/32—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

The invention provides a drying control method of a washing and drying integrated machine, which comprises the following steps: a detection step, namely detecting a water inlet temperature G1, a water outlet temperature G2 and an inner cylinder internal temperature G3; judging whether the washing and drying integrated machine is in a state that drying and heating are finished and condensation starts or not; judging the relation among G1, G2 and G3; a control step, when the drying temperature rise is ended and condensation starts, the control step is that: when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, judging that the washing and drying integrated machine has no abnormal condition, controlling a rear cylinder condensation valve to be continuously opened, and continuously running a drying and dehumidifying process; when the absolute value of the G1-G3 is more than A or the absolute value of the G2-G3 is more than A, judging that the washing and drying integrated machine has abnormal conditions, controlling a rear cylinder condensing valve to be closed, and controlling dehydration at a first rotation speed. The invention can provide different fault treatment means according to different detected water temperatures so as to improve the drying efficiency and ensure the normal and efficient operation of the dryer.

Description

Drying control method of washing and drying integrated machine
Technical Field
The invention relates to the technical field of clothes washing and drying, in particular to a drying control method of a washing and drying integrated machine.
Background
The common water-cooled washing and drying integrated machine can be roughly divided into two types depending on the position of a condensation section (the position where condensed water flows), one type is provided with a condensation air duct, and the other type is to use the rear wall of a rear barrel for condensation without the condensation air duct. However, the condensed water state cannot be accurately judged, so that faults cannot be detected and judged, the drying efficiency is low, the washing and drying machine cannot operate normally and efficiently, and the user experience degree is low.
The invention designs a drying control method of a washing and drying integrated machine because the water-cooled condensing and drying machine in the prior art has the technical problems that the condensed water state cannot be accurately judged, the failure cannot be accurately detected and judged, the drying efficiency is low, the washing and drying machine cannot normally and efficiently operate, the user experience is low and the like.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of low drying efficiency caused by the fact that the water-cooled condensing and drying machine in the prior art cannot accurately detect and judge faults, and further provides a drying control method of the washing and drying integrated machine.
In order to solve the above problems, the present invention provides a drying control method of a washing and drying integrated machine, wherein:
the washing and drying integrated machine comprises a rear barrel, wherein a rear barrel condensation valve is arranged on the rear barrel to control condensed water to enter; the drying control method comprises the following steps:
a detection step of detecting a rear barrel water inlet temperature G1, detecting a condensed water outlet temperature G2, and detecting a temperature G3 inside the inner barrel, namely, a barrel inner temperature;
judging, namely judging that the working state of the washing and drying integrated machine is in a state that drying and heating are finished and condensation is started; judging the relation between G1 and G2 and the relation between G2 and G3;
a control step, when the washing and drying integrated machine is in a state that the drying and heating is finished and the condensation is started: when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, judging that the washing and drying integrated machine has no abnormal condition, and controlling the rear cylinder condensation valve to be continuously opened so as to continuously operate a drying and dehumidifying process; when the absolute value of G1-G3 is more than A or the absolute value of G2-G3 is more than A, judging that the washing and drying integrated machine has abnormal conditions, controlling the rear cylinder condensation valve to be closed, and controlling the washing and drying integrated machine to dewater at a first rotating speed, wherein the first rotating speed is smaller than a first preset rotating speed; wherein A is a preset value.
In some embodiments, in the controlling step, after the washing and drying integrated machine dehydrates at the first rotational speed for a third preset time, controlling to continue detecting G1, G2 and G3;
in the judging step, continuously judging the relation between the absolute value G1-G3 and the absolute value G2-G3 and the relation between the absolute value A and the relation A respectively;
in the control step, when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, the rear cylinder condensation valve is controlled to be continuously opened, and the drying and dehumidification process is continuously operated; when |G1-G3| > A or |G2-G3| > A, the control does not perform any more detection of temperature and time, and (5) operating normally until other faults are reported or a dry judgment is carried out.
In some embodiments, in the control step, when the rear cylinder condensation valve is controlled to be continuously opened and the drying and dehumidification process is continuously operated, a flushing valve in the condensation air duct is controlled to be opened, and water is flushed to the water inlet temperature sensing bag and the water outlet temperature sensing bag; and after the flushing valve is opened for a duration t0, control continues to detect G1, G2 and G3, and G11 is also detected, wherein G11 is the inlet water temperature detected after the rear cylinder condensing valve is opened for t0, and is a fixed value.
In some embodiments, in the controlling step, when G1 is greater than or equal to B, continuing to detect and determine whether G1 is greater than or equal to C, wherein B and C are both preset values, and C is greater than B; and when G1 is more than or equal to C, judging that the cold water switch is not opened or hot water is connected, and controlling to report faults.
In some embodiments, in the control step, when G1 is greater than or equal to B and G1 is less than C, the water inlet temperature is determined to be higher, information is prompted or displayed, a high temperature determination program is entered, and the operation height Wen Pan is controlled to be dry until the operation is finished.
In some embodiments, in the control step, after the control reports the fault, the control displays the fault, and controls the drying and dehumidifying process to continue to run.
In some embodiments, in the control step, after the failure is reported, the drying operation is controlled to end or the failure protection is controlled to execute the complete machine suspension or shutdown.
In some embodiments, in the controlling step, when G1 is less than B, controlling to continue drying, determining drying, continuously performing temperature detection, drying is not stopped, and controlling to determine a relationship between g11—g1=e and D, wherein D is a preset value;
when the absolute value of G11-G1 is less than or equal to D, controlling to continuously dry and judging, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is more than or equal to 0, controlling to continuously dry and judging dryness, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is less than 0, the control enters a control program for judging whether G1 is more than or equal to C.
In some embodiments, in the controlling step, when the control continues to dry and judges dryness, the temperature detection is continuously performed, after the drying is not stopped, whether the drying can be judged, if the drying is judged, the control is performed to cool the gas, and then the control operation is finished; if the drying is not yet judged, the control program for judging whether G1 is more than or equal to B is continuously entered.
In some embodiments, a water inlet temperature sensing bulb for detecting the water inlet temperature of the rear barrel is positioned at the position of the condensation water inlet of the rear barrel, and a water outlet temperature sensing bulb for detecting the water outlet temperature of the condensed water is positioned at the bottom of the rear barrel; the temperature sensing bag for detecting the temperature in the cylinder is positioned at the position where the air outlet of the heating air channel is connected with the inner cylinder;
the washing and drying integrated machine further comprises a condensation air duct, and the hot and humid air can be cooled and dehumidified in the condensation air duct while being cooled and dehumidified on the inner wall of the rear cylinder.
The drying control method of the washing and drying integrated machine has the following beneficial effects:
according to the invention, whether the washing and drying integrated machine is in a state of drying, heating, finishing and condensing, judging whether an abnormal condition exists in the washing and drying machine or not according to the relation between G1 and G2 and the relation between G2 and G3, so that whether abnormal phenomena such as temperature sensing package damage or machine air leakage or water are generated or not can be judged according to different states, if so, a water inlet valve (namely a rear cylinder condensing valve) of rear cylinder condensation is closed, and the washing and drying machine is prevented from being broken under the abnormal conditions; therefore, the invention provides a fault detection mode to provide different fault processing means according to different detected water temperatures (or whether the water is started or not), so as to improve the drying efficiency and ensure the normal and efficient operation of the dryer.
Drawings
FIG. 1 is an internal structural view of a washing and drying integrated machine of the present invention;
FIG. 1a is an enlarged partial view of the portion A of FIG. 1;
fig. 2 is a control flow chart of a drying control method of the washing and drying integrated machine of the present invention.
The reference numerals are expressed as:
1. a rear barrel; 2. an inner cylinder; 3. an air duct; 31. a condensing air duct; 32. a heating air duct; 4. a heater; 5. an intake manifold; 61. an air duct condensation water inlet; 62. a rear cylinder condensation water inlet; 63. a flushing valve water inlet; 7. an air outlet; 8. a blower.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, an embodiment of the present invention provides a drying control method of a washing and drying integrated machine, where: the washing and drying integrated machine comprises a rear cylinder 1, an inner cylinder 2 and an air duct 3, wherein air in the inner cylinder 2 can enter the air duct 3 to be heated and then return to the inner cylinder 2, a first temperature sensor is arranged in the inner cylinder 2, a rear cylinder condensed water structure is arranged on the inner wall of the rear cylinder 1 and can cool and dehumidify hot humid air reaching the inner wall of the rear cylinder, a condensation structure and a heater 4 are arranged in the air duct 3, and the condensation structure can cool and dehumidify the hot humid air reaching the air duct; the heater can heat air; a second temperature sensor is arranged in the air duct and positioned at the air flow downstream of the condensation structure, and the rear barrel condensation structure further comprises a rear barrel condensation valve which can control the opening and closing of the rear barrel condensation water;
the drying control method comprises the following steps:
a detection step of detecting a rear barrel water inlet temperature G1, detecting a condensed water outlet temperature G2, and detecting a temperature G3 inside the inner barrel, namely, a barrel inner temperature;
judging, namely judging that the working state of the washing and drying integrated machine is in a state that drying and heating are finished and condensation is started; judging the relation between G1 and G2 and the relation between G2 and G3;
a control step, when the washing and drying integrated machine is in a state that the drying and heating is finished and the condensation is started: when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, judging that the washing and drying integrated machine has no abnormal condition, and controlling the rear cylinder condensation valve to be continuously opened so as to continuously operate a drying and dehumidifying process; when the absolute value of G1-G3 is more than A or the absolute value of G2-G3 is more than A, judging that the washing and drying integrated machine has abnormal conditions, controlling the rear cylinder condensation valve to be closed, and controlling the washing and drying integrated machine to dewater at a first rotating speed, wherein the first rotating speed is smaller than a first preset rotating speed; wherein A is a constant and is a preset value, and A is used for judging whether the water inlet temperature G1 of the rear cylinder is close to the temperature G3 in the inner cylinder or not, and judging whether the water outlet temperature G2 of the condensed water is close to the temperature G3 in the inner cylinder or not.
The I G1-G3I is less than or equal to A I and the I G2-G3I is less than or equal to A (the temperature of a G1 water inlet temperature sensing bulb, the temperature in a G3 cylinder and the temperature of water outlet at the bottommost end of a G2 condensation air duct are subjected to heat exchange), so that the temperature of G1 is close to the temperature of G3, the temperature of G2 is close to the temperature of G3, and the running state of the whole machine is normal; G1-G3 > A shows that the temperature difference between G1 and G3 is far, and the temperature difference between G2 and G3 is far, so that if the temperature is bad or the machine leaks gas or water is much, a large temperature difference is caused, low-speed dehydration (drainage) is carried out;
according to the invention, whether the washing and drying integrated machine is in a state of drying, heating, finishing and condensing, judging whether an abnormal condition exists in the washing and drying machine or not according to the relation between G1 and G2 and the relation between G2 and G3, so that whether abnormal phenomena such as temperature sensing package damage or machine air leakage or water are generated or not can be judged according to different states, if so, a water inlet valve (namely a rear cylinder condensing valve) of rear cylinder condensation is closed, and the washing and drying machine is prevented from being broken under the abnormal conditions; therefore, the invention provides a fault detection mode to provide different fault processing means according to different detected water temperatures (or whether the water is started or not), so as to improve the drying efficiency and ensure the normal and efficient operation of the dryer.
Note 1: the drying process of the invention is specifically as follows:
drying, dewatering, loosening, drying, weighing, drying, heating, drying, judging, drying, cooling and finishing
The specific description is as follows:
drying, dewatering and loosening, namely, dewatering once and shaking before dehumidification to reduce the water content of clothes and increase the efficiency, and part of machine types or programs do not have the process.
Drying and weighing, namely weighing clothes before stable dehumidification to judge the quantity of the clothes, and often matching with dehydration, so that the quantity of the clothes and the water content of the clothes can be predicted according to the dehydration rotating speed and the weighing value.
Drying and heating, and heating the inside of the drum by hot air to fully evaporate water on the clothes and fully fill the inside of the drum with water vapor. In order to achieve the aim of filling with water vapor at the fastest speed, no water is fed at this time.
Drying and drying judgment are main dehumidification stages of the whole flow, and only condensed water starts to be condensed at the moment, and drying judgment detection is started to judge whether clothes are dried or not.
And after cooling and ending, judging drying, stopping heating, reducing the temperature, preventing scalding, and ending.
And (2) injection: the water inlet temperature sensing bulb is positioned at the position of the rear cylinder condensation water inlet or the position of the air duct condensation water inlet and is used for detecting the water inlet temperature of the whole machine, namely the tap water temperature. The temperature detected is denoted by G1.
And (3) injection: the hydroelectric heating temperature sensing bulb is positioned near hydroelectric heating, and can be used for detecting the water outlet temperature of discharged condensed water during drying at the bottommost end of the outer cylinder. The temperature detected is denoted by G2.
And (4) injection: the air outlet temperature sensing bulb is positioned near the air outlet and is used for detecting the air outlet temperature, the temperature can be used for indicating the internal temperature of the inner cylinder (steel cylinder), namely the temperature in the cylinder, and the detection value is indicated by G3.
And (5) injection: the low-speed dehydration is carried out at about 200 revolutions per minute, so that the gas in the cylinder flows relatively quickly, the temperature is raised once, the second heating time is very short, the drying time is not excessively long, and the user experience is affected.
And (6) injection: normally, after the drying and heating are finished, the temperatures of three temperature sensing bags at different positions in a closed environment should be close to or equal to each other because of the rotation of the drum (usually about 50 rotations). This temperature difference is affected by factors such as washer-dryer tightness, diameter of the cylinder, bulb position layout, and exit conditions at the temperature rise stage. Taking a certain 10kg dryer as an example, the temperature difference is not more than 5 ℃ at maximum, and is generally below 2 ℃. Therefore, the maximum value of A is about 5 ℃.
According to the invention, the temperature sensing bag is added at the condensate water inlet, and the change of condensate water is judged according to the temperature change of the temperature sensing bag, so that the drying state is adjusted, and the user experience is improved. 1. And detecting whether water enters or not by using a newly added temperature sensing bag. 2. And carrying out different drying actions according to different water inlet temperatures.
First: the condensed water used for condensation comes from a tap, and can be detected to be boiled or boiled in the drying process. Second,: the drying efficiency of the water-cooled internal circulation dryer is greatly affected by the inlet temperature of the condensate water. Generally, the lower the water temperature, the higher the efficiency, and conversely, the lower the efficiency. Different drying parameters are carried out through different water temperatures, and user experience is improved. Mainly when the temperature of the water inlet is too high, the drying can be ensured.
According to the invention, by detecting the water temperature of condensed water, G1, G2, G3 and G11 are all used for judging the state, G11 is a fixed value (a fixed value detected for the first time), and the other are all real-time detection values; g1, G2 and G3 are used for judging whether the running state is normal before the flushing valve is opened, G1, B and C are used for judging whether the water temperature is too high or no boiled water, and the control means is used for reporting faults or adjusting drying parameters to carry out drying.
In some embodiments, in the controlling step, after the washing and drying integrated machine dehydrates at the first rotational speed for a third preset time, controlling to continue detecting G1, G2 and G3;
in the judging step, continuously judging the relation between the absolute value G1-G3 and the absolute value G2-G3 and the relation between the absolute value A and the relation A respectively;
in the control step, when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, the rear cylinder condensation valve is controlled to be continuously opened, and the drying and dehumidification process is continuously operated; when |G1-G3| > A or |G2-G3| > A, the control does not perform any more detection of temperature and time, and the normal operation is carried out until other faults are reported or the drying is reported (the drying is reported, namely, a signal that the clothes are dried is sent out, namely, the clothes are dried at the moment).
This is the preferred form of control of the present invention after the washing and drying machine has dewatered at the first rotational speed for a third predetermined time, the expressions of I G1-G3 > A and I G2-G3 > A are as follows the temperature sensing bag breaks or the machine leaks air or water is very much, and if the two times are continuous, the drying stage can be carried out until the failure is reported or the drying is judged.
And (7) injection: this should not occur in theory. However, the temperature difference of the temperature sensing bag is larger due to the reasons that the water in the roller is not discharged (the problem of the drain valve), the air leakage of the whole machine is serious, the temperature sensing bag is faulty and the like. All the conditions can be detected by common fault monitoring means which are already applied to the whole machine.
And 8: the branch is judged to be dry by adopting the most common temperature difference between the air outlet temperature sensing and the fan temperature sensing bulb (positioned below the fan) or the temperature difference between the air outlet temperature sensing bulb and the hydroelectric heating temperature sensing bulb, the water inlet temperature is not considered, and no additional treatment is carried out.
In some embodiments, in the control step, when the rear cylinder condensation valve is controlled to be continuously opened and the drying and dehumidification process is continuously operated, a flushing valve in the condensation air duct is controlled to be opened, and water is flushed to the water inlet temperature sensing bag and the water outlet temperature sensing bag; and after the flushing valve is opened for a duration t0, control continues to detect G1, G2 and G3, and G11 is also detected, wherein G11 is the inlet water temperature detected after the rear cylinder condensing valve is opened for t0, and is a fixed value. The washing and drying integrated machine is in a preferable control mode after a rear cylinder condensing valve is continuously opened and a drying and dehumidifying process is continuously operated, a flushing valve (in a condensing air duct) is opened, water is flushed down, the water is flushed onto a water inlet temperature sensing bag and a water outlet temperature sensing bag, the water can be cooled, whether the water temperature is too high or not can be judged according to the relation among G1, G2, G3 and G11, the water valve is not opened, and a control means is used for reporting faults or adjusting drying parameters to dry.
Note 11: g11 is the inlet water temperature detected after the rear cylinder condensing valve is opened by t0, and is a fixed value, and the difference is that G1 and G1 are real-time monitoring values.
In some embodiments, in the control step, when G1 is greater than or equal to B, the inlet water temperature G1 of the rear cylinder is higher, and at the moment, whether G1 is greater than or equal to C is continuously detected and judged, wherein B and C are constants and are preset values, and C is greater than B; when G1 is more than or equal to C, the water inlet temperature G1 of the rear cylinder is too high, and at the moment, the situation that a cold water switch is not opened or hot water is connected is judged, the ultrahigh water inlet temperature can occur, and the fault is controlled. G1 And the temperature of water entering after flushing is still higher, namely no water or hot water is indicated, G1 is larger than or equal to C (45 degrees), if the water entering after flushing is not smaller than B (30 degrees), the failure is reported if the water entering after flushing is judged to be not smaller than C (45 degrees), the drying efficiency is extremely low, and the drying can still be carried out.
For G1. Gtoreq.C note 9: for a water condensation dryer, the influence of the water inlet temperature on the drying efficiency is particularly large, and the water is difficult to dry when the water temperature exceeds 30 ℃. Therefore, the B value is about 30 ℃. In general, after the end of the drying and warming phase, the three temperature-sensing bags are at a higher temperature, typically in excess of 50 ℃, and for example, in a 10kg dryer, the temperature will reach 60 ℃. Therefore, the C value can be set at about 45 ℃. After the start of water intake, the water intake temperature G1 will drop rapidly, equal to the tap water temperature, and a time t0 is given in consideration of the fact that the water storage temperature before the water pipe may be high, and the water temperature is considered to be relatively stable after t 0.
In some embodiments, in the control step, when G1 is greater than or equal to B and G1 is less than C, the water inlet temperature is determined to be higher, information is prompted or displayed, a high temperature determination program is entered, and the operation height Wen Pan is controlled to be dry until the operation is finished. If not, judging that the water inlet temperature is higher, the operation is higher Wen Pangan (the condensed water temperature is higher, the drying efficiency is lower, and at the moment, the electric heating is increased). Note 10: the term "high Wen Pan dry" refers to a condition that the drying time is increased, the drying temperature is increased, and the drying condition (more difficult condition) is changed based on the original drying.
In some embodiments, in the control step, after the control reports the fault, the control displays the fault, and controls the drying and dehumidifying process to continue to run.
In some embodiments, in the control step, after the failure is reported, the drying operation is controlled to end or the failure protection is controlled to execute the complete machine suspension or shutdown.
In some embodiments, in the control step, when G1 is less than B, the control continues to dry and determine dryness, continues to perform temperature detection, and does not stop drying, and controls and determines a relationship between g11—g1=e and D, where D is a constant, that is, a preset value, and D is used to determine whether the intake water temperature G11 detected after the rear cylinder condensation valve is opened t0 is close to the rear cylinder intake water temperature G1;
when the absolute value of G11-G1 is less than or equal to D, controlling to continuously dry and judging, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is more than or equal to 0, controlling to continuously dry and judging dryness, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is less than 0, the control enters a control program for judging whether G1 is more than or equal to C.
The invention is in a preferable control form under G1 & lt B, G1 & lt B indicates that the water inlet temperature is low after flushing, normal condensation and drying are carried out, G11-G1=E & ltoreq.D (G11 is the water inlet temperature detected after a rear cylinder condensation valve is opened t0, namely an initial value, and G1 is an actual detection value) indicates that the temperature is close to G11 and G1, at the moment, the system is normally condensed and dried, G11-G1 & gtD indicates that the phase difference between G11 and G1 is far, indicates that no water or water temperature changes suddenly at the moment, E & gt0 indicates that the water temperature is reduced (lower), and the condensation effect is better; e < 0, if the water temperature rises, the water is continuously judged to be C, and if the water temperature is not higher than the water temperature, the water is judged to be hot suddenly (the water temperature is increased to be much hot); the control mode can accurately judge whether the water temperature is normal or low or too high, can accurately execute the drying program and improves the drying efficiency. Note 12: and detecting whether the water temperature is changed greatly in the operation process, if the water temperature is reduced, the drying is not affected, and the efficiency is improved.
In some embodiments, in the controlling step, when the control continues to dry and judges dryness, the temperature detection is continuously performed, after the drying is not stopped, whether the drying can be judged, if the drying is judged, the control is performed to cool the gas, and then the control operation is finished; if the drying is not yet judged, the control program for judging whether G1 is more than or equal to B is continuously entered.
In some embodiments, a water inlet temperature sensing bulb for detecting the water inlet temperature of the rear barrel is positioned at the position of the condensation water inlet of the rear barrel, and a water outlet temperature sensing bulb for detecting the water outlet temperature of the condensed water is positioned at the bottom of the rear barrel; the temperature sensing bag for detecting the temperature in the cylinder is positioned at the position where the air outlet of the heating air channel is connected with the inner cylinder;
the washing and drying integrated machine further comprises a condensation air duct, and the hot and humid air can be cooled and dehumidified in the condensation air duct while being cooled and dehumidified on the inner wall of the rear cylinder. The invention combines the condensation of the rear cylinder and the condensation of the condensation air duct to form a double-condensation structure, thereby improving the condensation heat exchange effect and the drying effect.
Those skilled in the art will readily appreciate that the advantageous features of the various aspects described above may be freely combined and stacked without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (9)

1. A drying control method of a washing and drying integrated machine is characterized by comprising the following steps of:
the washing and drying integrated machine comprises a rear barrel, wherein a rear barrel condensation valve is arranged on the rear barrel to control condensed water to enter; the drying control method comprises the following steps:
a detection step of detecting a rear barrel water inlet temperature G1, detecting a condensed water outlet temperature G2, and detecting a temperature G3 inside the inner barrel, namely, a barrel inner temperature;
judging, namely judging that the working state of the washing and drying integrated machine is in a state that drying and heating are finished and condensation is started; judging the relation between G1 and G2 and the relation between G2 and G3;
a control step, when the washing and drying integrated machine is in a state that the drying and heating is finished and the condensation is started: when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, judging that the washing and drying integrated machine has no abnormal condition, and controlling the rear cylinder condensation valve to be continuously opened so as to continuously operate a drying and dehumidifying process; when the absolute value of G1-G3 is more than A or the absolute value of G2-G3 is more than A, judging that the washing and drying integrated machine has abnormal conditions, controlling the rear cylinder condensation valve to be closed, and controlling the washing and drying integrated machine to dewater at a first rotating speed, wherein the first rotating speed is smaller than a first preset rotating speed; wherein A is a preset value.
2. The drying control method according to claim 1, characterized in that:
in the control step, after the washing and drying integrated machine dewaters for a third preset time at a first rotation speed, G1, G2 and G3 are controlled to be continuously detected;
in the judging step, continuously judging the relation between the absolute value G1-G3 and the absolute value G2-G3 and the relation between the absolute value A and the relation A respectively;
in the control step, when the absolute value of G1-G3 is less than or equal to A and the absolute value of G2-G3 is less than or equal to A, the rear cylinder condensation valve is controlled to be continuously opened, and the drying and dehumidification process is continuously operated; when |G1-G3| > A or |G2-G3| > A, the control does not perform any more detection of temperature and time, and (5) operating normally until other faults are reported or a dry judgment is carried out.
3. The drying control method according to claim 1 or 2, characterized in that:
the water inlet temperature sensing bulb for detecting the water inlet temperature of the rear barrel is positioned at the position of the condensation water inlet of the rear barrel, and the water outlet temperature sensing bulb for detecting the water outlet temperature of condensed water is positioned at the bottom of the rear barrel; the temperature sensing bag for detecting the temperature in the cylinder is positioned at the position where the air outlet of the heating air channel is connected with the inner cylinder;
the washing and drying integrated machine further comprises a condensation air duct, and the hot and humid air can be cooled and dehumidified in the condensation air duct when being cooled and dehumidified on the inner wall of the rear cylinder;
in the control step, when the rear cylinder condensing valve is controlled to be continuously opened, after the drying and dehumidifying process is continuously operated, a flushing valve in a condensing air duct is controlled to be opened, and water is flushed to a water inlet temperature sensing bag and a water outlet temperature sensing bag; and after the flushing valve is opened for a duration t0, control continues to detect G1, G2 and G3, and G11 is also detected, wherein G11 is the inlet water temperature detected after the rear cylinder condensing valve is opened for t0, and is a fixed value.
4. The drying control method according to claim 3, characterized in that:
in the control step, when G1 is more than or equal to B, continuously detecting and judging whether G1 is more than or equal to C, wherein B and C are both preset values, and C is more than B; and when G1 is more than or equal to C, judging that the cold water switch is not opened or hot water is connected, and controlling to report faults.
5. The drying control method according to claim 4, characterized in that:
in the control step, when G1 is more than or equal to B and G1 is less than C, the water inlet temperature is judged to be higher, information is prompted or displayed, a high-temperature judging program is entered, and the operation height Wen Pan is controlled to be dry until the operation is finished.
6. The drying control method according to claim 4, characterized in that:
in the control step, after the control reports the fault, the control displays the fault, and the drying and dehumidifying process is controlled to continue to run.
7. The drying control method according to claim 2 or 6, characterized in that:
in the control step, after the failure is reported, the drying and drying operation is controlled to be finished or the failure protection execution complete machine is controlled to be stopped or stopped.
8. The drying control method according to claim 4, characterized in that:
in the control step, when G1 is less than B, the control continues to dry and judge, the temperature detection is continuously carried out, the drying is not stopped, and the control judges the relation between G11-G1=E and D, wherein D is a preset value;
when the absolute value of G11-G1 is less than or equal to D, controlling to continuously dry and judging, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is more than or equal to 0, controlling to continuously dry and judging dryness, continuously detecting the temperature, and drying is not stopped; when the absolute value of G11-G1 is more than D, and if E is less than 0, the control enters a control program for judging whether G1 is more than or equal to C.
9. The drying control method according to claim 8, characterized in that:
in the control step, when the control continues drying and judging dryness, the temperature detection is continuously carried out, after the drying is not stopped, whether the drying can be judged is judged, if the drying is judged, the control is carried out on the gas to reduce the temperature, and then the control operation is ended; if the drying is not yet judged, the control program for judging whether G1 is more than or equal to B is continuously entered.
CN202210467713.3A 2022-04-29 2022-04-29 Drying control method of washing and drying integrated machine Active CN114753102B (en)

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2972292B2 (en) * 1990-07-25 1999-11-08 株式会社日立製作所 Washing and drying machine
JP3346942B2 (en) * 1995-05-12 2002-11-18 株式会社東芝 Dryer
JPH11276759A (en) * 1998-03-30 1999-10-12 Nippon Kentetsu Co Ltd Control of operation washing and drying machine
JP4439417B2 (en) * 2005-03-11 2010-03-24 三洋電機株式会社 Dryer
JP2007111396A (en) * 2005-10-24 2007-05-10 Sharp Corp Washing drying machine
JP2018094110A (en) * 2016-12-14 2018-06-21 日立アプライアンス株式会社 Washing and drying machine
CN112301644B (en) * 2020-04-24 2022-03-22 无锡小天鹅电器有限公司 Drying abnormity detection method and device of clothes treatment device and clothes treatment device
CN112458718B (en) * 2020-09-04 2021-12-21 珠海格力电器股份有限公司 Clothes treatment equipment and drying control method thereof

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