CN111188157B - Washing equipment with hot air drying system and control method thereof - Google Patents
Washing equipment with hot air drying system and control method thereof Download PDFInfo
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- CN111188157B CN111188157B CN202010023140.6A CN202010023140A CN111188157B CN 111188157 B CN111188157 B CN 111188157B CN 202010023140 A CN202010023140 A CN 202010023140A CN 111188157 B CN111188157 B CN 111188157B
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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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic 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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
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- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention provides washing equipment with a hot air drying system and a control method thereof. The washing apparatus includes: an outer cylinder; an inner cylinder disposed in the outer cylinder; an outer cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, an inner cavity for accommodating washings is formed on the inner wall of the inner cylinder, and a through hole for communicating the inner cavity with the outer cavity is formed on the wall of the inner cylinder, wherein one part of the through hole is an air inlet hole for drying the inner cylinder, and the other part of the through hole is an air outlet hole for drying the inner cylinder; the hot air drying system comprises an air feeder, a waste heat exchanger, an electric heating unit, a valve component and a temperature and humidity sensor component. Direct circulation or heating new trend are carried out to airing exhaust through the total exhaust channel of drying to when making use this washing equipment to carry out the clothing and dry, can improve energy utilization efficiency, reduce system operating power, the energy saving. Furthermore, the drying degree can be better controlled, and the clothes are prevented from winding and wrinkling.
Description
Technical Field
The invention relates to washing equipment, in particular to washing equipment with a hot air drying system and a control method thereof.
Background
The prior direct-exhaust clothes dryer system is mainly in an air open type circulation mode, low-temperature air is heated by adopting electric heating, hot air is introduced into a drum to dry clothes and take away moisture of the clothes, and then the hot air is converted into hot and humid air to be directly discharged; air heating is usually realized by adopting a mode of convection heat exchange between air and electric heating, but no obvious air channel exists due to structural limitation, so that the efficiency of the heat exchange mode is low, hot and humid air is directly discharged after drying, the heat utilization efficiency is low, and the heat load of indoor air is increased.
Therefore, the utilization control of the air in the opening system and the utilization and recovery of part of the hot humid gas have great significance for improving the energy utilization. Thus, a simpler control of the opening system and a solution for recycling hot and humid air are proposed.
Disclosure of Invention
In view of the above, the present invention provides a washing apparatus with a hot air drying system and a control method thereof, to solve the above problems, specifically:
the invention provides a washing device with a hot air drying system in a first aspect, comprising:
an outer cylinder;
an inner cylinder disposed in the outer cylinder;
an outer cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, an inner cavity for accommodating washings is formed on the inner wall of the inner cylinder, through holes for communicating the inner cavity with the outer cavity are formed on the wall of the inner cylinder, one part of the through holes is an air inlet hole for drying the inner cylinder, and the other part of the through holes is an air outlet hole for drying the inner cylinder;
the hot air drying system comprises an air feeder, a waste heat exchanger, an electric heating unit, a valve assembly and a temperature and humidity sensor assembly; wherein
The waste heat exchanger is provided with a fresh air inlet, a fresh air outlet, an exhaust air inlet and an exhaust air outlet and is used for heat exchange of fresh air and drying exhaust air;
the fresh air inlet side of the waste heat exchanger is provided with an air feeder, after the air feeder introduces the outside fresh air into the waste heat exchanger, the waste heat exchanger heats the fresh air by utilizing the waste heat of the drying exhaust air, the heated fresh air is sent into a heating channel through an air supply channel, an electric heating unit is arranged in the heating channel, and the heated fresh air is sent into an air inlet hole of the inner cylinder through a hot air main air supply channel after being heated by the electric heating unit;
the air outlet of the inner cylinder is communicated with a drying main exhaust channel, the outlet of the drying main exhaust channel is divided into a first drying exhaust branch and a second drying exhaust branch, wherein the first drying exhaust branch is connected with the air inlet side of the heating channel, the second drying exhaust branch is connected with the exhaust inlet of the waste heat exchanger, and the drying exhaust of the inner cylinder is discharged into the atmosphere from the exhaust outlet of the waste heat exchanger after releasing heat to supply fresh air through the waste heat exchanger;
the temperature and humidity sensor assembly is provided with a first temperature sensor in a hot air main air supply channel, and a second temperature sensor is arranged on a drying main air exhaust channel;
the valve component is provided with a three-way valve between the main drying exhaust channel and the first drying exhaust branch and the second drying exhaust branch, or is provided with an adjusting valve on the first drying exhaust branch and the second drying exhaust branch respectively.
As a further alternative it is possible that,
the electric heating units comprise a first electric heating unit and a second electric heating unit, the corresponding heating channels comprise a first electric heating channel and a second electric heating channel, and fresh air heated by the waste heat exchanger enters the heating channels through the air supply channel and then sequentially flows through the first electric heating channel and the second electric heating channel where the first electric heating unit is located to be heated;
the middle channel between the first electric heating channel and the second electric heating channel is connected with a heating branch, the other end of the heating branch is connected with the drying main exhaust channel, and a control valve is arranged on the heating branch.
The invention provides a control method based on the washing equipment, the washing equipment is provided with an intelligent mode, and after the intelligent mode is selected, the intelligent control air inlet operation is executed:
detecting the ambient temperature, and selecting a corresponding heating state according to the ambient temperature;
monitoring the temperature and humidity of inlet air in the main hot air supply channel, and recording the length of the inlet air sent into an air inlet hole of the inner cylinder through the main hot air supply channel;
and adjusting the heating state according to the air inlet temperature and humidity and the air inlet time length to dry the clothes.
As a further alternative it is possible that,
the washing equipment is also provided with a common mode, and when the common mode is selected, the common control air inlet operation is executed:
the heater of the electric heating unit is operated at full power.
As a further alternative it is possible that,
the intelligent mode and/or the common mode further comprise an air outlet control operation:
and monitoring the air outlet temperature and humidity of the drying main exhaust channel, and controlling the air outlet ratio in the first drying exhaust branch and the second drying exhaust branch according to the air outlet temperature and humidity.
Further optionally, the air outlet ratio between the first drying air exhaust branch and the second drying air exhaust branch comprises:
when the air-out temperature is less than first predetermined temperature, the air-out proportion is 0: 1;
when the air-out humidity is greater than the first preset humidity, the air-out proportion is 0: 1;
and when the air outlet temperature belongs to [ a first preset temperature and a second preset temperature ] and the air outlet humidity is smaller than the first preset humidity, controlling the air outlet proportion according to a preset relation, wherein the air exhaust volume in the first drying air exhaust branch increases along with the rising of the air outlet temperature.
As a further alternative it is possible that,
the smart mode and/or the normal mode further includes:
judging the drying end according to the air outlet humidity in the air outlet temperature and humidity: and when the outlet air humidity reaches the preset drying finishing humidity, stopping drying.
As a further alternative it is possible that,
adjusting the heating state according to the air inlet temperature and humidity and the air inlet time length, comprising
A temperature rise drying stage: selecting a corresponding heating state according to the air inlet temperature and humidity to send air to the inner cylinder, and judging whether the temperature rising drying stage is finished or not according to the air inlet temperature and humidity and the air inlet time length;
and (3) a stable drying stage: when the temperature-rising drying stage is finished, the current heating state is kept, the heating state is adjusted according to the inlet air temperature in the inlet air temperature and humidity, and then whether the stable drying stage is finished or not is judged according to the inlet air time length;
and (3) a slow drying stage: and after the stable drying stage is finished, drying in a fixed heating state or adjusting the heating state according to the inlet air humidity in the inlet air temperature and humidity until the outlet air humidity in the outlet air temperature and humidity reaches the preset drying finishing humidity.
As a further alternative it is possible that,
according to the air inlet temperature adjustment in the air inlet humiture the heating state includes:
when the inlet air temperature reaches the preset stable drying temperature upper limit, the total power of the electric heating unit is reduced;
when the inlet air temperature reaches the preset stable drying temperature lower limit, the total power of the electric heating unit is increased and/or the rotating speed of the air feeder is reduced.
As a further alternative it is possible that,
in the slow drying stage: according to the air inlet humidity adjustment heating state among the air inlet humiture include: the single heater in the electric heating unit is adopted for operation, and the blower is adjusted according to the inlet air temperature.
Has the advantages that:
the device utilizes a part of clothes drying machine drying return air (air exhaust in the first drying air exhaust branch) with higher temperature and lower humidity to heat and dry again, reduces the heating temperature difference to the air, improves the energy utilization efficiency, reduces the system operation power and saves the energy. Furthermore, the drying degree can be better controlled, and the clothes can be prevented from winding and wrinkling.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic view of a flow direction of drying air in a dryer according to an embodiment of the present invention.
In the figure: 1. a first temperature and humidity sensor; 2. a second temperature and humidity sensor; 3. a waste heat exchanger; 4. first electrical heating; 5. second electric heating; 6. drying the main exhaust duct; 7. an inner barrel; 8. the hot air main supply duct.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms "a", "an", and "the" as used in the embodiments of the present invention and the appended claims are intended to include the plural forms as well, and "a plurality" typically includes at least two, but does not exclude the inclusion of at least one, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
The invention discloses washing equipment with a hot air drying system, which can dry clothes in the washing equipment. The washing apparatus may be an inline dryer or other apparatus having an inline dryer function, such as a washing machine, etc. Specifically, when the device is used as a direct-exhausting clothes dryer, the control method of the device is improved by utilizing return air, and comprises the following steps: the part with higher temperature but lower humidity in the return air of the drying clothes is used for reheating and drying, the heating temperature difference of the air is reduced, and a plurality of heating states are set by the cooperation of the air feeder and the heater during heating, so that the energy utilization efficiency is improved, the system operation power is reduced, and the energy is saved.
To further illustrate the invention, the following examples are provided.
Example 1:
as shown in fig. 1, in the present embodiment, there is provided a washing apparatus with a hot air drying system, including: the washing machine comprises an outer barrel and an inner barrel 7, wherein the inner barrel is arranged in the outer barrel, an outer cavity is formed between the inner wall of the outer barrel and the outer wall of the inner barrel, and an inner cavity for containing washings is formed on the inner wall of the inner barrel. The wall of the inner cylinder is provided with a through hole for communicating the inner cavity and the outer cavity, wherein one part is an air inlet hole for drying the inner cylinder, and the other part is an air outlet hole for drying the inner cylinder.
The washing equipment also comprises a hot air drying system, wherein the hot air drying system comprises a blower, a waste heat exchanger, an electric heating unit, a valve assembly and a temperature and humidity sensor assembly. The waste heat exchanger is provided with a fresh air inlet, a fresh air outlet, an exhaust air inlet and an exhaust air outlet and is used for heat exchange of fresh air and drying exhaust air. The fresh air inlet side of the waste heat exchanger 3 is provided with an air feeder, after the air feeder introduces the outside fresh air into the waste heat exchanger 3, the waste heat exchanger heats the fresh air by utilizing the waste heat of the drying exhaust air, and the heated fresh air is sent into the heating channel through the air supply duct 8. An electric heating unit is arranged in the heating channel, and the heated air is sent into the air inlet hole of the inner cylinder through the hot air main air supply channel after being heated by the electric heating unit. The air outlet of the inner cylinder is communicated with a drying main exhaust channel 6, the outlet of the drying main exhaust channel is divided into a first drying exhaust branch and a second drying exhaust branch, wherein the first drying exhaust branch is connected with the air inlet side of the heating channel, the second drying exhaust branch is connected with the exhaust inlet of the waste heat exchanger, and the drying exhaust of the inner cylinder is discharged into the atmosphere from the exhaust outlet of the waste heat exchanger after the heat of the waste heat exchanger releases heat to supply fresh air. The temperature and humidity sensor assembly is provided with a first temperature sensor in the hot air main air supply channel, and a second temperature sensor is arranged on the drying main air exhaust channel.
The valve component is provided with a three-way valve between the main drying exhaust channel and the first drying exhaust branch and the second drying exhaust branch, or is provided with an adjusting valve on the first drying exhaust branch and the second drying exhaust branch respectively.
In some optional implementations, the electric heating units include a first electric heating unit and a second electric heating unit, the corresponding heating channels include a first electric heating channel and a second electric heating channel, and the fresh air heated by the waste heat exchanger flows through the first electric heating channel and the second electric heating channel where the first electric heating unit is located to be heated after entering the heating channels through the air supply channel; a heating branch is connected to the intermediate channel between the first electric heating channel and the second electric heating channel, the other end of the heating branch is connected to the drying main exhaust channel, and a control valve is arranged on the heating branch.
Based on the above, the air flow direction of the washing device during drying is as follows: p1 (blower air suction) → p2 (waste heat exchanger) → p3 (first electric heating) → p4 → p5 (second electric heating) → p6 (first temperature and humidity sensor temperature and humidity) → p7 (inner cylinder drying) → p8 (second temperature and humidity sensor temperature and humidity) → (p2 → p9 discharge) and/or (p10 → p3 recovery cycle heating. And two circulation channels of circulation and outward discharge are formed through the connection relationship among the components. By using the circulation channel and controlling the return air (the exhaust air in the first drying exhaust branch) and the external exhaust air (the exhaust air in the second drying exhaust branch), the washing equipment has the characteristics of improving the clothes drying efficiency, reducing the clothes drying time, reducing the clothes drying energy consumption and the like.
Example 2
In the present embodiment, a control method of a washing apparatus is provided. The control method employed the washing apparatus in example 1 above. Washing equipment is equipped with intelligent mode, when selecting carry out intelligent control air inlet operation behind the intelligent mode: detecting the ambient temperature, and selecting a corresponding heating state according to the ambient temperature; monitoring the temperature and humidity of inlet air in the main hot air supply channel, and recording the length of the inlet air sent into an air inlet hole of the inner cylinder through the main hot air supply channel; and adjusting the heating state according to the air inlet temperature and humidity and the air inlet time length to dry the clothes.
In some optional implementation modes, the washing equipment is further provided with a common mode, and common control air inlet operation is executed after the common mode is selected. The common control air inlet operation is to realize rapid drying, and the heater of the electric heating unit is operated at full power.
When the washing equipment is simultaneously provided with the two modes, the intelligent mode and/or the common mode further comprise an air outlet control operation: and monitoring the air outlet temperature and humidity of the drying main exhaust channel, and controlling the air outlet ratio in the first drying exhaust branch and the second drying exhaust branch according to the air outlet temperature and humidity. Optionally, the air outlet ratio in the first drying air exhaust branch and the second drying air exhaust branch includes: when the air-out temperature is less than first predetermined temperature, the air-out proportion is 0: 1; when the air-out humidity is greater than the first preset humidity, the air-out proportion is 0: 1; and when the air outlet temperature belongs to [ a first preset temperature and a second preset temperature ] and the air outlet humidity is smaller than the first preset humidity, controlling the air outlet proportion according to a preset relation, wherein the air exhaust volume in the first drying air exhaust branch increases along with the rising of the air outlet temperature. In addition, when only an intelligent mode or a common mode is arranged in the washing equipment, the air exhaust of the washing equipment can be controlled through the air exhaust control operation.
For the selection of the drying ending time, the judgment is performed according to the outlet air humidity in this embodiment. Optionally, the intelligent mode and/or the normal mode further includes: judging the drying end according to the air outlet humidity in the air outlet temperature and humidity: and stopping drying when the outlet air humidity reaches the preset drying finishing humidity.
In some optional implementation manners, the adjusting of the heating state according to the air inlet temperature and humidity and the air inlet time comprises three stages:
a temperature rise drying stage: selecting a corresponding heating state according to the air inlet temperature and humidity to send air to the inner cylinder, and judging whether the temperature rising drying stage is finished or not according to the air inlet temperature and humidity and the air inlet time length;
and (3) a stable drying stage: when the temperature-rising drying stage is finished, the current heating state is kept, the heating state is adjusted according to the inlet air temperature in the inlet air temperature and humidity, and then whether the stable drying stage is finished or not is judged according to the inlet air time length;
and (3) a slow drying stage: and after the stable drying stage is finished, drying in a fixed heating state or adjusting the heating state according to the inlet air humidity in the inlet air temperature and humidity until the outlet air humidity in the outlet air temperature and humidity reaches the preset drying finishing humidity. In order to prevent the temperature of the inner cylinder from being too high or too low, in an optional implementation manner of this embodiment, when the heating state is adjusted according to the temperature of the inlet air in the inlet air temperature and humidity, and when the temperature of the inlet air reaches the upper limit of the preset stable drying temperature, the total power of the electric heating unit is reduced; and when the inlet air temperature reaches the lower limit of the preset stable drying temperature, the total power of the electric heating unit is increased and/or the rotating speed of the air feeder is reduced.
In the slow drying stage, because the moisture in the clothes is relatively less, the excessive heater is not needed to heat the wind sent into the inner drum, so that the energy consumption is not increased. At the moment, when the heating state is adjusted according to the inlet air humidity in the inlet air temperature humidity, the single-heater operation in the electric heating unit is adopted, and the air feeder is adjusted according to the inlet air temperature. In addition, the air can be sent by a certain preset air feeder gear without any adjustment.
In order to further explain the technical scheme of the invention, the following specific work flow of the washing equipment is provided by combining the control method and the washing equipment.
Taking the device as a clothes dryer and simultaneously having a common mode and an intelligent mode as an example: two modes, which can be selected by the user.
After selecting the normal mode:
the clothes drying is started, external low-temperature and low-humidity air enters a cavity of the clothes dryer through the suction effect of a blower, the first electric heater 4 and the second electric heater 5 are heated at the full power, so that the air is heated quickly, then enters the inner drum to exchange heat with clothes, absorb moisture and dry the clothes, and finally, the air is completely discharged or a part of the air is recycled and mixed with fresh air according to the hot and wet state parameters of the dried air;
the following specific relationship can be adopted for the utilization of the waste heat (the air outlet ratio in the first drying exhaust branch and the second drying exhaust branch):
the second temperature/humidity sensor 2 detects the temperature/humidity state parameter, and divides the temperature/humidity state interval as shown in the following table.
| Hot and humid state | By using the ratio of return air |
| The temperature is less than 40 DEG C | 0 |
| The humidity is more than 80 percent | 0 |
| The temperature is more than 40 ℃ at 60 ℃ and the humidity is less than 80 percent | 30％ |
| The temperature is more than 60 ℃ and the humidity is less than 80 percent | 50％ |
| The temperature is more than 60 ℃ and the humidity is more than 80 percent | Only by heat exchange |
The return air and the fresh air are mixed and heated, and only heat exchange is carried out if the temperature is more than 60 ℃ and the humidity is more than 80 percent, and the heat exchange is not mixed.
After selecting the smart mode:
the clothes drying is started, and a first temperature and humidity sensor 1 firstly detects the temperature and humidity T0 and D0 of ambient air; the activation of the respective heating states is performed according to the different states. The execution selection mainly comprises the steps of distinguishing the conditions of overcast and rainy days returning to south, high environmental humidity or low humidity of air in high-temperature dry weather, and because the drying temperature is set to be low, the moisture evaporation and removal rate of clothes is slow, and the clothes are not easy to wrinkle; the drying power and the corresponding time can be adjusted according to the parameter, and the drying crease-resistance effect can be ensured; and reverse shaking is set within a preset reverse time, so that clothes are prevented from being wound.
Specifically, the fan is only operated in a starting state, wind passing through the temperature and humidity sensor 1 is detected to be an environmental parameter, and the duration of the stage is 1 min. In an alternative, four activation states are provided: state 0-state 3. The temperature and humidity conditions corresponding to each state are set as follows:
state 0: t0 < 23 ℃;
state 1: t0 is at normal temperature 28 + -5 deg.C and humidity D0 is less than 60%;
state 2: t0 at high temperature 38 + -5 deg.C and humidity D0 < 60%;
state 3: t0, humidity D0 > 60%;
corresponding to the heating state of the electric heating unit:
note: the electric heating is PTC combined heating and can be operated at full power and half power.
Three phases in this mode:
(1) a temperature rise drying stage:
according to the corresponding starting state, the heating air is heated up, and the limiting conditions are as follows: completing the heating and drying stage when the temperature Tl reaches 60 ℃; forced stopping conditions: namely, the temperature is not up to 60 ℃ after the time reaches 30min, and the temperature-rising drying stage is also ended. And when the drying process is finished, keeping the original heating states of the fan and the electric heater unchanged, namely, entering a stable drying stage in the current heating state.
(2) And (3) a stable drying stage:
after the temperature rise drying stage is finished, the heating state of the operation in the previous stage is not changed, so that the temperature and humidity parameters of the air in the barrel still change, and the operation state needs to be adjusted according to the air parameters fed back by the temperature and humidity sensor in order to maintain stable drying; and the limiting conditions are set as follows: the temperature of the inlet air in the inlet air temperature and humidity is kept at the temperature of finishing temperature rise (Tl +/-10). If the last temperature of the temperature rising stage is T1, this is irrelevant to whether the limit condition is reached, as long as the stable drying stage maintains this temperature, that is, the temperature rising stage reaches T1 ═ 40 ℃, and then the next stable drying stage maintains T1 ═ 40 ± 10 ℃.
If the temperature exceeds the upper limit: the corresponding heating conditions were changed as follows:
| air blower | Electric heating 1 | |
|
| State 1 | Normal wind speed | Starting half power operation | Does not start |
| |
Normal wind speed | Starting full power operation | Out of |
| State | |||
| 3 | Normal wind speed | Starting full power operation | Starting half power operation |
If the temperature exceeds the lower limit: the corresponding heating conditions were changed as follows:
| air blower | Electric heating 1 | |
|
| State 1 | Normal wind speed | Starting full power operation | Starting half |
| State | |||
| 2 | Normal wind speed | Starting full power operation | Starting full |
| State | |||
| 3 | Lower than normal wind speed | Starting full power operation | Starting full power operation |
The rotating speed of the air feeder is divided into: normal wind speed, high wind speed, and wind speed lower than normal wind speed, namely low, medium and high three-gear wind speed. The three gears are only an example, and two gears or other more gears may be provided.
And (3) stabilizing forced finishing conditions of the drying stage: the total running time is more than 100 min.
(3) Slow drying stage
At the stage, the moisture content of the clothes is low, and only one electric heating device runs at full power until the temperature and humidity sensor detects that the humidity meets the set condition DFinal (a Chinese character of 'gan')＜10％。
Waste heat return air utilization
The method comprises the following steps of: 1 only utilizes the waste heat; 2 simultaneously utilizing heat and mass;
1. the initial temperature of the inlet air is increased only by using the waste heat state, namely, the marked part in the figure 1 only realizes the heat exchange between the outlet air and the inlet air through the heat exchange plate;
2. utilize heat and quality promptly in fig. 1 mark part simultaneously, divide the exhaust into two routes, partly directly arrange, another part directly gets back to wind channel and new trend mixture reheating stoving:
| hot and humid state | By using the ratio of return air |
| The temperature is less than 40 DEG C | 0 |
| The humidity is more than 80 percent | 0 |
| The temperature is more than 40 ℃ at 60 ℃ and the humidity is less than 80 percent | 30％ |
| The temperature is more than 60 ℃ and the humidity is less than 80 percent | 50％ |
| The temperature is more than 60 ℃ and the humidity is more than 80 percent | Only by heat exchange |
And when the humidity is more than 80%, if the temperature is more than 60 ℃, only heat exchange is carried out, and the air return ratio is also 0.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A washing apparatus with a hot air drying system, comprising:
an outer cylinder;
an inner cylinder disposed in the outer cylinder;
an outer cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder, an inner cavity for accommodating washings is formed on the inner wall of the inner cylinder, and a through hole for communicating the inner cavity with the outer cavity is formed on the wall of the inner cylinder, wherein one part of the through hole is an air inlet hole for drying the inner cylinder, and the other part of the through hole is an air outlet hole for drying the inner cylinder;
the hot air drying system comprises a blower, a waste heat exchanger, an electric heating unit, a valve component and a temperature and humidity sensor component; wherein
The waste heat exchanger is provided with a fresh air inlet, a fresh air outlet, an exhaust air inlet and an exhaust air outlet and is used for heat exchange of fresh air and drying exhaust air;
the fresh air inlet side of the waste heat exchanger is provided with an air feeder, after the air feeder introduces the outside fresh air into the waste heat exchanger, the waste heat exchanger heats the fresh air by utilizing the waste heat of the drying exhaust air, the heated fresh air is sent into a heating channel through an air supply channel, an electric heating unit is arranged in the heating channel, and the heated fresh air is sent into an air inlet hole of the inner cylinder through a hot air main air supply channel after being heated by the electric heating unit;
the air outlet hole of the inner cylinder is communicated with a drying main exhaust channel, the outlet of the drying main exhaust channel is divided into a first drying exhaust branch and a second drying exhaust branch, wherein the first drying exhaust branch is connected with the air inlet side of the heating channel, the second drying exhaust branch is connected with the exhaust inlet of the waste heat exchanger, and the drying exhaust of the inner cylinder is discharged into the atmosphere from the exhaust outlet of the waste heat exchanger after releasing heat to supply fresh air through the waste heat exchanger;
the temperature and humidity sensor assembly is provided with a first temperature sensor in a hot air main air supply channel, and a second temperature sensor is arranged on a drying main air exhaust channel;
the valve component is provided with a three-way valve between the main drying exhaust channel and the first drying exhaust branch and the second drying exhaust branch, or is provided with an adjusting valve on the first drying exhaust branch and the second drying exhaust branch respectively;
the electric heating units comprise a first electric heating unit and a second electric heating unit, the corresponding heating channels comprise a first electric heating channel and a second electric heating channel, and fresh air heated by the waste heat exchanger enters the heating channels through the air supply channel and then sequentially flows through the first electric heating channel and the second electric heating channel where the first electric heating unit is located to be heated;
a heating branch is connected to a middle channel between the first electric heating channel and the second electric heating channel, the other end of the heating branch is connected to the drying main exhaust channel, and a control valve is arranged on the heating branch;
the washing equipment is provided with an intelligent mode, and when the intelligent mode is selected, the intelligent control air inlet operation is executed: detecting the ambient temperature, and selecting a corresponding heating state according to the ambient temperature; monitoring the temperature and humidity of inlet air in the main hot air supply channel, and recording the length of the inlet air sent into an air inlet hole of the inner cylinder through the main hot air supply channel; adjusting the heating state according to the air inlet temperature and humidity and the air inlet time length to dry the clothes;
the intelligent mode further comprises air-out control operation: monitoring the air outlet temperature and humidity of a main drying exhaust channel, and controlling the air outlet ratio in a first drying exhaust branch and a second drying exhaust branch according to the air outlet temperature and humidity; wherein the air-out proportion in first stoving air exhaust branch road and the second stoving air exhaust branch road includes:
when the air outlet temperature is lower than 40 ℃, the air outlet ratio is 0: 1;
when the outlet air humidity is greater than 80%, the outlet air proportion is 0: 1;
when the air outlet temperature belongs to [40 ℃,60 ℃) and the air outlet humidity is less than 80%, the air outlet ratio is 3: 7;
when the air outlet temperature is higher than 60 ℃, the air outlet ratio is 1: 1;
when the air outlet temperature is higher than 60 ℃ and the air outlet humidity is higher than 80%, the air outlet ratio is 0: 1.
2. A control method of a washing device according to claim 1, wherein the washing device is further provided with a normal mode, and when the normal mode is selected, the normal control air intake operation is performed:
the heater of the electric heating unit is operated at full power.
3. The control method according to claim 2, wherein the normal mode further includes an air-out control operation:
and monitoring the air outlet temperature and humidity of the drying main exhaust channel, and controlling the air outlet ratio in the first drying exhaust branch and the second drying exhaust branch according to the air outlet temperature and humidity.
4. The control method according to claim 3,
the smart mode and/or the normal mode further includes:
judging the drying end according to the air outlet humidity in the air outlet temperature and humidity: and when the outlet air humidity reaches the preset drying finishing humidity, stopping drying.
5. The control method of claim 2, wherein the adjusting the heating state according to the temperature and humidity of the inlet air and the inlet air duration comprises
A temperature rise drying stage: selecting a corresponding heating state according to the air inlet temperature and humidity to supply air to the inner cylinder, and judging whether the temperature rising drying stage is finished or not according to the air inlet temperature and humidity and the air inlet time length;
and (3) a stable drying stage: when the temperature-rising drying stage is finished, the current heating state is kept, the heating state is adjusted according to the inlet air temperature in the inlet air temperature and humidity, and then whether the stable drying stage is finished or not is judged according to the inlet air time length;
and (3) a slow drying stage: and after the stable drying stage is finished, drying in a fixed heating state or adjusting the heating state according to the inlet air humidity in the inlet air temperature and humidity until the outlet air humidity in the outlet air temperature and humidity reaches the preset drying finishing humidity.
6. The control method according to claim 5, wherein the adjusting the heating state according to the temperature of the inlet air in the inlet air temperature and humidity comprises:
when the inlet air temperature reaches the preset stable drying temperature upper limit, the total power of the electric heating unit is reduced;
when the inlet air temperature reaches the preset stable drying temperature lower limit, the total power of the electric heating unit is increased and/or the rotating speed of the air feeder is reduced.
7. Control method according to claim 6, characterized in that, in the slow drying phase: according to the air inlet humidity adjustment heating state in the air inlet humiture, include:
the single heater in the electric heating unit is adopted for operation, and the blower is adjusted according to the inlet air temperature.
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| CN114108243B (en) * | 2020-08-28 | 2023-12-15 | 无锡小天鹅电器有限公司 | Drying control method and device, clothes treatment equipment and storage medium |
| CN112252003B (en) * | 2020-09-21 | 2021-09-28 | 珠海格力电器股份有限公司 | Method for drying shoes by using washing and drying machine and washing and drying machine |
| CN112161323B (en) * | 2020-09-25 | 2022-05-10 | 青岛易来智能科技股份有限公司 | Constant temperature control method and system, electric heating equipment and bathroom heater equipment |
| CN113425214A (en) * | 2021-07-23 | 2021-09-24 | 珠海格力电器股份有限公司 | Hot air ventilation assembly, dish washing machine, control method and device of dish washing machine and storage medium |
| CN113995361A (en) * | 2021-10-15 | 2022-02-01 | 佛山市百斯特电器科技有限公司 | Control method of washing equipment and washing equipment |
| CN114234348A (en) * | 2021-11-12 | 2022-03-25 | 青岛海尔空调器有限总公司 | Control method, device and system of air conditioner |
| CN114045647B (en) * | 2021-11-19 | 2022-11-25 | 珠海格力电器股份有限公司 | Inner barrel assembly, clothes treatment equipment with drying function and control method |
| CN116043486B (en) * | 2023-02-16 | 2023-11-21 | 广东善思科技有限公司 | Control method of cleaning equipment and cleaning equipment |
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