CN111851016A - Drying device, clothes dryer, washing and drying integrated machine and drying method - Google Patents
Drying device, clothes dryer, washing and drying integrated machine and drying method Download PDFInfo
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- CN111851016A CN111851016A CN201910364241.7A CN201910364241A CN111851016A CN 111851016 A CN111851016 A CN 111851016A CN 201910364241 A CN201910364241 A CN 201910364241A CN 111851016 A CN111851016 A CN 111851016A
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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
- D06F58/10—Drying cabinets or drying chambers having heating or ventilating means
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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
- D06F58/206—Heat pump arrangements
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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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- 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)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The embodiment of the invention discloses a drying device, a clothes dryer, a washing and drying integrated machine and a drying method, wherein the drying device comprises a first heating device, a heat pump system, a containing device, a fan, a first heating device, a controller and a cooling device; the heat pump system comprises a compressor and a condenser; the controller is used for acquiring a drying instruction and controlling the fan, the first heating device and the heat pump system to start working; determining that the outlet temperature of the compressor is greater than or equal to a first temperature threshold value or the outlet temperature of the condenser is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling the cooling device to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold. Therefore, on one hand, the overheating of the compressor is prevented, the safety of the drying device is improved, on the other hand, the early closing of the auxiliary heating equipment is avoided, and the drying efficiency is improved.
Description
Technical Field
The invention relates to a drying and dehumidifying technology, in particular to a drying device, a clothes dryer, a washing and drying integrated machine and a drying method.
Background
In the related art, various methods may be employed to achieve drying of objects; in the scheme of drying the object by using the heat pump system, the drying speed of the object can be accelerated by auxiliary heating of auxiliary heating equipment; the cooling fan can also be used for cooling the compressor of the heat pump system so as to prevent the compressor from overheating; in the related art, the auxiliary heating device and the cooling fan are controlled in a linkage manner, for example, when the outlet temperature of the compressor reaches a set threshold value, the cooling fan is controlled to start to operate, and the auxiliary heating device is controlled to stop operating at the same time; even if the cooling fan is started, the temperature of the outlet of the compressor is required to be increased for a period of time to be reduced, so that when the linkage control scheme of the auxiliary heating equipment and the cooling fan is adopted, the temperature of the outlet of the compressor is increased after the cooling fan is started, the overheating of the compressor is easy to occur, and the operation safety of the heat pump system is reduced; in addition, when the cooling fan is turned on, the auxiliary heating apparatus is turned off, and the drying efficiency is also lowered.
Disclosure of Invention
The embodiment of the invention provides a drying device, a clothes dryer, a washing and drying integrated machine and a drying method.
The embodiment of the invention provides a drying device, which comprises a first heating device, a heat pump system, a containing device for placing an object to be dried, a fan for realizing gas circulation between the containing device and the heat pump system, and a first heating device arranged in a gas circulation channel; the heat pump system comprises a compressor and a condenser; the drying device also comprises a controller and a cooling device for cooling the compressor;
the controller is used for acquiring a drying instruction and controlling the fan, the first heating device and the heat pump system to start working; determining that the outlet temperature of the compressor is greater than or equal to a first temperature threshold value or the outlet temperature of the condenser is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling the cooling device to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold.
In the above scheme, the first temperature threshold and the second temperature threshold are both between 85 ℃ and 95 ℃.
In the above scheme, the fifth temperature threshold is between 80 ℃ and 90 ℃.
In the foregoing scheme, the controller is further configured to determine that the outlet temperature of the compressor is less than or equal to a third temperature threshold, or that the outlet temperature of the condenser is less than or equal to a fourth temperature threshold, and control the first heating device to start working; the third temperature threshold is less than the first temperature threshold, and the fourth temperature threshold is less than the second temperature threshold.
In the foregoing scheme, the controller is further configured to determine that the outlet temperature of the compressor is less than or equal to a sixth temperature threshold, and control the cooling device to stop working, where the sixth temperature threshold is less than the fifth temperature threshold.
In the above scheme, the first heating device is arranged between the fan and the accommodating device.
The embodiment of the invention also provides a clothes dryer which comprises any one of the drying devices.
The embodiment of the invention also provides a washing and drying integrated machine which comprises any one drying device.
The embodiment of the invention also provides a drying method, which comprises the following steps:
when a drying instruction is acquired, controlling a fan, a first heating device and a heat pump system in the drying device to start working; determining that the outlet temperature of a compressor of the heat pump system is greater than or equal to a first temperature threshold value or the outlet temperature of a condenser of the heat pump system is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling a cooling device for cooling the compressor to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold; the fan is used for realizing gas circulation between the accommodating device and the heat pump system, the accommodating device is used for placing an object to be dried, and the first heating device is arranged in a gas circulation channel.
In the above scheme, the first temperature threshold and the second temperature threshold are both between 85 ℃ and 95 ℃.
In the above scheme, the fifth temperature threshold is between 80 ℃ and 90 ℃.
In the above scheme, the method further comprises: determining that the outlet temperature of the compressor is less than or equal to a third temperature threshold value or the outlet temperature of the condenser is less than or equal to a fourth temperature threshold value, and controlling the first heating device to start working; the third temperature threshold is less than the first temperature threshold, and the fourth temperature threshold is less than the second temperature threshold.
In the above scheme, the method further comprises: and determining that the outlet temperature of the compressor is less than or equal to a sixth temperature threshold value, and controlling the cooling device to stop working, wherein the sixth temperature threshold value is less than the fifth temperature threshold value.
In the above scheme, the first heating device is arranged between the fan and the accommodating device.
In the embodiment of the invention, the drying device comprises a first heating device, a heat pump system, an accommodating device for accommodating objects to be dried, a fan for realizing gas circulation between the accommodating device and the heat pump system, and a first heating device arranged in a gas circulation channel; the heat pump system comprises a compressor and a condenser; the drying device also comprises a controller and a cooling device for cooling the compressor; the controller is used for acquiring a drying instruction and controlling the fan, the first heating device and the heat pump system to start working; determining that the outlet temperature of the compressor is greater than or equal to a first temperature threshold value or the outlet temperature of the condenser is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling the cooling device to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold. Therefore, the fifth temperature threshold is set to be smaller than the first temperature threshold or the second temperature threshold, the compressor can be cooled in advance when not overheated, on one hand, overheating of the compressor is prevented, safety of the drying device is improved, on the other hand, early closing of the auxiliary heating device is avoided, and drying efficiency is improved.
Drawings
Fig. 1 is a schematic view illustrating an operation principle of a related art dryer;
FIG. 2 is a schematic diagram of a control circuit of the drying apparatus according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of a composition structure of a drying apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a first heating device according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of the cooling apparatus according to the embodiment of the present invention;
fig. 6 is a flowchart of a drying method according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the examples provided herein are merely illustrative of the present invention and are not intended to limit the present invention. In addition, the following embodiments are provided as partial embodiments for implementing the present invention, not all embodiments for implementing the present invention, and the technical solutions described in the embodiments of the present invention may be implemented in any combination without conflict.
It should be noted that, in the embodiments of the present invention, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the explicitly recited elements but also other elements not explicitly listed or inherent to the method or apparatus.
In the related art, a drying apparatus such as a dryer may operate based on a heat pump system, which may include, for example, an evaporator, a condenser, a compressor, and an expansion valve; fig. 1 is a schematic diagram illustrating an operation principle of a related art clothes dryer, as shown in fig. 1, in which the clothes dryer may include a blower 1, a drum 2, an evaporator 3, a condenser 4, a compressor 5, and an expansion valve 6, wherein the drum 2 is used for placing clothes to be dried, and the blower 1 is used for circulating air between the drum 2 and a heat pump system.
Referring to fig. 1, the operation principle of the dryer based on the heat pump system is as follows: firstly, the fan 1 drives air to flow through the roller 2, the surface of the evaporator 3 and the surface of the condenser 4 in the air channel, and then the air flows into the fan to form an air circulation channel, as shown by a solid arrow in fig. 1; in the heat pump system, a refrigerant flows through the compressor 5, the condenser 4, the evaporator 3, and the expansion valve 6 to form a refrigerant circulation circuit, as indicated by dotted arrows in fig. 1. Wherein, the condenser 4 and the evaporator 3 are positioned in the air circulation channel, and the compressor 5 and the expansion valve 6 are positioned outside the air circulation channel; the evaporator 3 absorbs heat from ambient air and transfers it to the refrigerant, and the condenser 4 transfers the heat of the refrigerant to the ambient air. In the air circulation channel, air is heated by the condenser 4 and then changed into dry hot air, the dry hot air enters the roller 2 through the fan 1, moisture on clothes can be taken away, the dry hot air is changed into wet hot air and enters the evaporator 3, the evaporator 3 absorbs energy of the wet hot air, water is analyzed and changed into dry and cold air, then the dry and cold air enters the condenser 4 and is heated and changed into the dry hot air, and a working cycle is formed.
In the related art, in the early stage of the operation of the clothes dryer, the temperature of the heat pump system rises slowly, the heat transferred from the condenser 4 to the air is insufficient, and a long time is needed for the air temperature in the air circulation channel to reach a high-temperature working interval; in a specific example, through experimental tests, in the related art, the drying of 4kg of load cloth by using the heat pump dryer requires more than 100 minutes, and the drying time is too long.
In view of the above technical problems, the following embodiments are proposed.
Example one
The embodiment of the invention provides a drying device, which can be applied to a clothes dryer, a dryer or other drying devices adopting a heat pump system.
Fig. 2 is a schematic structural diagram of a control circuit of a drying apparatus according to an embodiment of the present invention, in an embodiment of the present invention, the drying apparatus may include: the first heating device 7, the first heating device 7 can be used for adding gas (such as air) flowing through the first heating device 7, in the embodiment of the present invention, the type of the first heating device 7 is not limited, for example, the first heating device 7 can be a heating wire or a heating device using electromagnetic induction heating technology.
In another embodiment of the present invention, the drying device may include a heat pump system 8, the operation principle of the heat pump system 8 is the same as that of the heat pump system in fig. 1, and the heat pump system may convert moist gas into dry hot gas.
In another embodiment of the present invention, the drying apparatus may include a receiving means (not shown in fig. 2) for placing the objects to be dried; for example, when the drying apparatus is applied to a clothes dryer, the accommodating device is a drum, the drum can accommodate clothes to be dried, and the clothes can be sufficiently contacted with air flowing through the drum when the drum is operated.
In another embodiment of the present invention, the fan 1 may realize gas circulation between the accommodating device and the heat pump system 8, specifically, the gas sent by the fan 1 sequentially flows through the accommodating device and the heat pump system 8, and is finally sent back to the fan 1 to form a gas circulation channel.
In another embodiment of the invention, the first heating means 7 can be arranged between the fan 1 and the containing device 8, obviously the first heating means 7 can operate to heat the gas flowing through it.
In another embodiment of the present invention, the drying device may further include a controller 9, and the controller 9 is configured to control the fan 1, the first heating device 7, and the heat pump system 8 to start operating when the controller 9 obtains the drying instruction.
Here, the drying instruction is used for instructing to start the drying device, and the embodiment of the present invention does not limit the obtaining mode of the drying instruction; in one example, a human-computer interaction interface may be provided at the drying device, and a user may input a drying instruction to the drying device through the human-computer interaction interface; in another embodiment, the drying apparatus may be in communication connection with the mobile terminal, so that a user may input a drying instruction to the mobile terminal, and then the drying instruction may be transmitted to the drying apparatus via a communication link between the drying apparatus and the mobile terminal.
It can be seen that, after the fan 1, the first heating device 7 and the heat pump system 8 start to work, the first heating device 7 can heat the gas flowing through the first heating device 7 during working, so that the temperature rise process of the gas in the gas circulation channel can be accelerated through the auxiliary heating of the first heating device 7, the drying time of the object to be dried can be shortened, and the drying speed of the object to be dried can be accelerated.
Optionally, when the drying device is applied to a clothes dryer, the drum can be controlled to start to work when a drying instruction is obtained, and when the drum runs, clothes can be fully contacted with air flowing through the drum, so that the drying speed of the clothes is increased.
In practical applications, the controller 9 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that, for different drying apparatuses, other electronic devices may be used to implement the above-described controller function, and the embodiment of the present invention is not particularly limited.
In another embodiment of the invention, the heat pump system 8 may include a compressor 5 and a condenser 4; the controller 9 is also used for controlling the working state of the first heating device 7 according to the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4.
In practical application, a temperature sensor 11 can be arranged at the outlet of the compressor 5 or the outlet of the condenser 4, and the controller 9 can be in communication connection with the temperature sensor 11, so that the controller 9 can determine the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 according to data uploaded by the temperature sensor; the embodiment of the present invention does not limit the kind of the temperature sensor.
Alternatively, the controller 9 may obtain the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 after controlling the first heating device 7 to start operating, and determine whether the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold and the outlet temperature of the condenser 4 is greater than or equal to the second temperature threshold.
In one example, after the first heating device 7 starts to operate, when the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold value, or the outlet temperature of the condenser 4 is greater than or equal to the second temperature threshold value, the controller 9 may control the first heating device 7 to stop operating; it can be seen that, when the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold, or the outlet temperature of the condenser 4 is greater than or equal to the second temperature threshold, it can be considered that the compressor 5 is in the high-temperature working interval, the heat exchange efficiency of the heat pump system 8 to the air is very high, and at this time, by turning off the first heating device 7, the compressor can be protected, and the energy consumption of the drying device is reduced.
In another example, after the first heating device 7 starts to operate, when the outlet temperature of the compressor 5 is less than the first temperature threshold value, or the outlet temperature of the condenser 4 is less than the second temperature threshold value, the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 can be obtained again; it can be seen that, when the outlet temperature of the compressor 5 is less than the first temperature threshold, or the outlet temperature of the condenser 4 is less than the second temperature threshold, it can be considered that the compressor 5 is not in the high-temperature working interval, at this time, the operation of the first heating device 7 is maintained, the drying time of the objects to be dried can be shortened, and the drying speed of the objects to be dried is accelerated.
Here, the first temperature threshold and the second temperature threshold may be set according to practical application requirements, for example, the value ranges of the first temperature threshold and the second temperature threshold are both 85 ℃ to 95 ℃.
Alternatively, the controller 9 may obtain the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 after controlling the first heating device 7 to stop working, and determine whether the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold and whether the outlet temperature of the condenser 4 is less than or equal to the fourth temperature threshold; and the third temperature threshold is smaller than the first temperature threshold, and the fourth temperature threshold is smaller than the second temperature threshold.
In one example, after the first heating device 7 stops operating, when the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold value, or the outlet temperature of the condenser 4 is less than or equal to the fourth temperature threshold value, the controller 9 may control the first heating device 7 to start operating; it can be seen that when the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold, or the outlet temperature of the condenser 4 is less than or equal to the fourth temperature threshold, the working temperature of the compressor 5 is considered to be low, and at this time, the first heating device 7 is controlled to start working, so that the drying time of the objects to be dried can be shortened, and the drying speed of the objects to be dried can be increased.
In another example, after the first heating device 7 stops working, when the outlet temperature of the compressor 5 is greater than the third temperature threshold value, or the outlet temperature of the condenser 4 is greater than the fourth temperature threshold value, the controller 9 may retrieve the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4; it can be seen that, when the outlet temperature of the compressor 5 is greater than the third temperature threshold or the outlet temperature of the condenser 4 is greater than the fourth temperature threshold, the compressor 5 may be considered to be in a high-temperature working range, at this time, the heat exchange efficiency of the heat pump system 8 to the air is very high, at this time, by maintaining the first heating device 7 to stop operating, the compressor may be protected, and the energy consumption of the drying device may be reduced.
Here, the third temperature threshold and the fourth temperature threshold may be set according to practical application requirements, for example, the third temperature threshold and the fourth temperature threshold both have a value range of 75 ℃ to 85 ℃.
In another embodiment of the invention, the heat pump system 8 may comprise a compressor 5; the drying device also comprises a cooling device 10 for cooling the compressor 5; the controller 9 controls the cooling device 10 to start operating when the cooling device 10 is not operating and the outlet temperature of the compressor 5 is greater than or equal to the fifth temperature threshold.
In practical application, a temperature sensor can be arranged at the outlet of the compressor 5, and the controller 9 can be in communication connection with the temperature sensor, so that the controller 9 can determine the outlet temperature of the compressor 5 according to data uploaded by the temperature sensor; in the embodiment of the present invention, the implementation manner of the cooling device is not limited, for example, the cooling device may be a fan or other device for achieving temperature reduction.
It is understood that when the outlet temperature of the compressor 5 is greater than or equal to the fifth temperature threshold, the compressor 5 is considered to be in the high temperature operation region, and at this time, the temperature of the compressor 5 can be reduced by controlling the cooling device 10 to start operating, and thus, the compressor can be protected.
Optionally, when the cooling device 10 is not in operation and the outlet temperature of the compressor 5 is less than the fifth temperature threshold, the compressor 5 may be considered not to be in the high-temperature operating range, at this time, the outlet temperature of the compressor 5 may be continuously obtained, and by maintaining the operation stop state of the cooling device 10, the compressor may be operated efficiently, so as to improve the drying efficiency.
In another embodiment of the present invention, the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold; it can be understood that, according to the operation mechanism of the heat pump system, when the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 is in a gradually increasing state, even if the cooling device 10 is turned on, the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 needs to be increased for a while to be decreased, in the embodiment of the present invention, when the outlet temperature of the compressor 5 reaches the fifth temperature threshold, the cooling device 10 may be turned on, and when the outlet temperature of the compressor 5 continues to be increased to the first temperature threshold, the first heating device 7 may be turned off, so that the magnitude relationship between the fifth temperature threshold and the first temperature threshold in the embodiment of the present invention is consistent with the operation mechanism of the heat pump system; specifically, the fifth temperature threshold is set to be smaller than the first temperature threshold or the second temperature threshold, so that the compressor can be cooled in advance when not overheated, on one hand, the overheating of the compressor is prevented, the safety of the drying device is improved, on the other hand, the early closing of the auxiliary heating equipment is avoided, and the drying efficiency is improved.
In another embodiment of the present invention, the controller 9 is further configured to control the cooling device 10 to stop operating when the outlet temperature of the compressor 5 is less than or equal to a sixth temperature threshold value after the cooling device 10 starts operating, wherein the sixth temperature threshold value is less than the fifth temperature threshold value.
It can be understood that when the outlet temperature of the compressor 5 is less than or equal to the sixth temperature threshold, the temperature of the compressor 5 can be considered to be lower, and at this time, the cooling device 10 is controlled to stop working, so that the working efficiency of the compressor 5 can be improved, and further, the drying efficiency of the drying device can be improved.
Here, the fifth temperature threshold and the sixth temperature threshold may be set according to practical application requirements, for example, the value range of the fifth temperature threshold is 80 ℃ to 90 ℃, and the value range of the sixth temperature threshold is 75 ℃ to 85 ℃.
It can be seen that, in the drying device of the embodiment of the present invention, the first heating device for auxiliary heating is provided, so that, in the initial stage of the operation of the drying device, the heat pump system and the first heating device supply heat simultaneously, the temperature of the air entering the accommodating device can be rapidly increased, more clothes moisture can be taken away, and meanwhile, the heat pump system can enter the efficient operation region more quickly, thereby shortening the drying time and improving the drying efficiency. Furthermore, in the embodiment of the invention, when the outlet temperature of the compressor reaches the first temperature threshold, the first heating device is closed, and only the heat pump system is reserved for providing heat, so that the energy utilization rate can be improved; meanwhile, the cooling device can be driven to run in a matched mode, specifically, the cooling device can be started or closed, so that the heat pump system can be guaranteed to run at a reasonable working temperature, and the safety and the reliability of the running of the heat pump system are guaranteed. In a specific example, the drying device of the embodiment of the invention is used for drying 4kg of load cloth, only 60-65 minutes is needed, and compared with the drying time of a heat pump clothes dryer in the related art, the drying time can be shortened by about 40 minutes.
Example two
On the basis of the first embodiment of the present invention, further illustration is performed.
Fig. 3 is a schematic structural diagram of a drying apparatus according to an embodiment of the present invention, and as shown in fig. 3, the drying apparatus may include: the device comprises a fan 1, a roller 2, an evaporator 3, a condenser 4, a compressor 5, an expansion valve 6, a first heating device 7, a cooling device 10 and a temperature sensor 11; wherein the temperature sensor 11 is arranged at the outlet of the compressor 5 and the cooling device 10 may be a fan.
Referring to fig. 3, the fan 1, the first heating device 7, the drum 2, the evaporator 3, and the condenser 4 may constitute an air circulation system, as indicated by solid arrows in fig. 3. The fan 1 drives air to flow along the circulating system; the first heating device 7 is positioned behind the fan 1 and in front of the roller 2 in the air circulation system and is used for heating air; the air flowing out of the roller 2 enters the evaporator 3 for air cooling to separate out moisture; then the air enters a condenser 4 to be heated, and the air temperature is increased; finally enters the fan 1 to complete an air cycle.
The compressor 5, the condenser 4, the evaporator 3, and the expansion valve 6 constitute a refrigerant circulation circuit, as indicated by the dotted arrow in fig. 3; wherein the evaporator 3 and the condenser 4 are positioned in the air circulation system and exchange heat with air; the compressor 5 and the expansion valve 6 are located outside the air circulation system; the compressor 5 is used for compressing a refrigerant, then the refrigerant enters the condenser 4, the expansion valve 6 reduces the pressure of the refrigerant in the condenser 4, and then the refrigerant enters the evaporator 3 and finally enters the compressor 5 to complete a refrigerant cycle.
The temperature sensor 11 is used for measuring the temperature of the refrigerant at the outlet of the compressor 5; the cooling device 10 is located outside the air circulation and in the vicinity of the compressor 5 for cooling the compressor 5.
Fig. 4 is a schematic diagram of a working process of the first heating device according to the embodiment of the present invention, and as shown in fig. 4, the process may include: when the drying device starts to work, the compressor 5 and the first heating device 7 are started simultaneously, so that the temperature of air entering the roller 2 can be quickly increased; after the drying apparatus starts to operate, the temperature at the outlet of the compressor 5 is measured by the temperature sensor 11, and it is understood that the temperature at the outlet of the compressor continuously increases as time passes.
Judging whether the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold value, if so, closing the first heating device 7, keeping the compressor 5 to work, and protecting the compressor and reducing the energy consumption of the drying device by closing the first heating device 7 because the compressor at the moment is in a high-temperature working interval and the heat exchange efficiency of air is very high. If the compressor outlet temperature is less than the first temperature threshold, the compressor 5 outlet temperature may continue to be obtained and it may be redetermined whether the compressor 5 outlet temperature is greater than or equal to the first temperature threshold.
After the first heating device 7 is turned off, it can be determined whether the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold, and if so, the first heating device 7 needs to be restarted to perform auxiliary heating on the air again, so as to keep the temperature of the air entering the drum 2 from decreasing. And if the outlet temperature of the compressor 5 is greater than the third temperature threshold value, continuously acquiring the outlet temperature of the compressor 5, and judging whether the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold value again.
The above work flow of the first heating device 7 is repeatedly circulated until the drying process is finished.
Fig. 5 is a schematic diagram of a working process of a cooling device according to an embodiment of the present invention, and as shown in fig. 5, the process may include:
when the drying device starts to work, the cooling device 10 is in a closed state due to the low temperature of the outlet of the compressor 5; after the drying apparatus starts to operate, the temperature at the outlet of the compressor 5 may be measured by the temperature sensor 11, and it is understood that the temperature at the outlet of the compressor 5 may continuously increase as time passes.
Judging whether the outlet temperature of the compressor 5 is greater than or equal to a fifth temperature threshold value, if so, starting the cooling device 10 to cool the compressor 5; if not, the outlet temperature of the compressor 5 is obtained again, and whether the outlet temperature of the compressor 5 is larger than or equal to the fifth temperature threshold value is judged again.
Judging whether the outlet temperature of the compressor 5 is less than or equal to a sixth temperature threshold value, if so, closing the cooling device 10 to maintain the working temperature of the compressor 5 in a high-temperature interval; if not, the outlet temperature of the compressor 5 is obtained again, and whether the outlet temperature of the compressor 5 is smaller than or equal to the sixth temperature threshold value is judged again.
The above work flow of the cooling device 10 is repeatedly circulated until the drying process is finished.
It can be seen that, in the embodiment of the present invention, a first heating device for auxiliary heating may be added to shorten the drying time, and a cooling device may be added near the compressor, and simultaneously, in cooperation with the work flow of the first heating device and the cooling device, the air may be heated up quickly after auxiliary heating, and absorb more moisture when entering the drum, so as to accelerate the drying of the object and reduce the drying time; in addition, the opening and closing of the cooling device are controlled, so that the compressor can work in a high-efficiency region, and the good operation of the compressor is maintained.
EXAMPLE III
On the basis of the drying device provided by the foregoing embodiment, an embodiment of the present invention further provides a clothes dryer, which includes any one of the drying devices described above.
The embodiment of the invention also provides a washing and drying integrated machine which comprises any one drying device.
Example four
On the basis of the drying device provided in the foregoing embodiment, an embodiment of the present invention further provides a drying method, which may be implemented in a clothes dryer, a dryer, or other drying devices that employ a heat pump system.
Fig. 6 is a flowchart of a drying method according to an embodiment of the present invention, and as shown in fig. 6, the flowchart may include:
step 601: and acquiring a drying instruction, and controlling the fan, the first heating device and the heat pump system to start working.
It can be seen that, after the fan 1, the first heating device 7 and the heat pump system 8 start to work, the first heating device 7 can heat the gas flowing through the first heating device 7 during working, so that the temperature rise process of the gas in the gas circulation channel can be accelerated through the auxiliary heating of the first heating device 7, the drying time of the object to be dried can be shortened, and the drying speed of the object to be dried can be accelerated.
Step 602: determining that the outlet temperature of the compressor is greater than or equal to a first temperature threshold value or the outlet temperature of the condenser is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling the cooling device to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold.
In practical applications, step 601 and step 602 can be implemented by the controller 9 described above.
Alternatively, after the first heating device 7 starts to operate, when the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold value, or the outlet temperature of the condenser 4 is greater than or equal to the second temperature threshold value, the first heating device 7 may be controlled to stop operating; it can be seen that, when the outlet temperature of the compressor 5 is greater than or equal to the first temperature threshold, or the outlet temperature of the condenser 4 is greater than or equal to the second temperature threshold, it can be considered that the compressor 5 is in the high-temperature working interval, the heat exchange efficiency of the heat pump system 8 to the air is very high, and at this time, by turning off the first heating device 7, the compressor can be protected, and the energy consumption of the drying device is reduced.
Alternatively, after the first heating device 7 is controlled to stop working, when the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold value, or the outlet temperature of the condenser 4 is less than or equal to the fourth temperature threshold value, the first heating device 7 may be controlled to start working; it can be seen that when the outlet temperature of the compressor 5 is less than or equal to the third temperature threshold, or the outlet temperature of the condenser 4 is less than or equal to the fourth temperature threshold, the working temperature of the compressor 5 is considered to be low, and at this time, the first heating device 7 is controlled to start working, so that the drying time of the objects to be dried can be shortened, and the drying speed of the objects to be dried can be increased.
Alternatively, the heat pump system 8 may include a compressor 5; the drying device also comprises a cooling device 10 for cooling the compressor 5; the method further comprises the following steps: and controlling the cooling device 10 to start working when the outlet temperature of the compressor 5 is greater than or equal to the fifth temperature threshold value.
It is understood that when the outlet temperature of the compressor 5 is greater than or equal to the fifth temperature threshold, the compressor 5 is considered to be in the high temperature operation region, and at this time, the temperature of the compressor 5 can be reduced by controlling the cooling device 10 to start operating, and thus, the compressor can be protected.
Optionally, the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold; it can be understood that, according to the operation mechanism of the heat pump system, when the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 is in a gradually increasing state, even if the cooling device 10 is turned on, the outlet temperature of the compressor 5 or the outlet temperature of the condenser 4 needs to be increased for a while to be decreased, in the embodiment of the present invention, when the outlet temperature of the compressor 5 reaches the fifth temperature threshold, the cooling device 10 may be turned on, and when the outlet temperature of the compressor 5 continues to be increased to the first temperature threshold, the first heating device 7 may be turned off, so that the magnitude relationship between the fifth temperature threshold and the first temperature threshold in the embodiment of the present invention is consistent with the operation mechanism of the heat pump system; specifically, the fifth temperature threshold is set to be smaller than the first temperature threshold or the second temperature threshold, so that the compressor can be cooled in advance when not overheated, on one hand, the overheating of the compressor is prevented, the safety of the drying device is improved, on the other hand, the early closing of the auxiliary heating equipment is avoided, and the drying efficiency is improved.
Optionally, the method further comprises: and when the outlet temperature of the compressor 5 is less than or equal to a sixth temperature threshold value, controlling the cooling device 10 to stop working, wherein the sixth temperature threshold value is less than a fifth temperature threshold value.
It can be understood that when the outlet temperature of the compressor 5 is less than or equal to the sixth temperature threshold, the temperature of the compressor 5 can be considered to be lower, and at this time, the cooling device 10 is controlled to stop working, so that the working efficiency of the compressor 5 can be improved, and further, the drying efficiency of the drying device can be improved.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The methods disclosed in the method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.
Features disclosed in various product embodiments provided by the application can be combined arbitrarily to obtain new product embodiments without conflict.
The features disclosed in the various method or apparatus embodiments provided herein may be combined in any combination to arrive at new method or apparatus embodiments without conflict.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. The drying device is characterized by comprising a first heating device, a heat pump system, a containing device for containing an object to be dried, a fan for realizing gas circulation between the containing device and the heat pump system, and a first heating device arranged in a gas circulation channel; the heat pump system comprises a compressor and a condenser; the drying device also comprises a controller and a cooling device for cooling the compressor;
the controller is used for acquiring a drying instruction and controlling the fan, the first heating device and the heat pump system to start working; determining that the outlet temperature of the compressor is greater than or equal to a first temperature threshold value or the outlet temperature of the condenser is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling the cooling device to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold.
2. The apparatus of claim 1, wherein the first and second temperature thresholds are each between 85 ℃ and 95 ℃.
3. The device of claim 1, wherein the fifth temperature threshold is between 80 ℃ and 90 ℃.
4. The apparatus of claim 1, wherein the controller is further configured to determine that the compressor outlet temperature is less than or equal to a third temperature threshold or that the condenser outlet temperature is less than or equal to a fourth temperature threshold, and to control the first heating device to begin operation; the third temperature threshold is less than the first temperature threshold, and the fourth temperature threshold is less than the second temperature threshold.
5. The apparatus of claim 1, wherein the controller is further configured to determine that the compressor outlet temperature is less than or equal to a sixth temperature threshold, the sixth temperature threshold being less than the fifth temperature threshold, and to control the cooling device to cease operation.
6. The device according to any one of claims 1 to 5, wherein the first heating means is arranged between the fan and the containing means.
7. A clothes dryer characterized by comprising the drying apparatus of any one of claims 1 to 6.
8. An all-in-one washer dryer, characterized by comprising the drying device of any one of claims 1 to 6.
9. A method of drying, the method comprising:
acquiring a drying instruction, and controlling a fan, a first heating device and a heat pump system in the drying device to start working; determining that the outlet temperature of a compressor of the heat pump system is greater than or equal to a first temperature threshold value or the outlet temperature of a condenser of the heat pump system is greater than or equal to a second temperature threshold value, and controlling the first heating device to stop working; determining that the outlet temperature of the compressor is greater than or equal to a fifth temperature threshold value, and controlling a cooling device for cooling the compressor to start working; the fifth temperature threshold is less than the first temperature threshold or the second temperature threshold; the fan is used for realizing gas circulation between the accommodating device and the heat pump system, the accommodating device is used for placing an object to be dried, and the first heating device is arranged in a gas circulation channel.
10. The method of claim 9, wherein the first and second temperature thresholds are each between 85 ℃ and 95 ℃.
11. The method of claim 9, wherein the fifth temperature threshold is between 80 ℃ and 90 ℃.
12. The method of claim 9, further comprising: determining that the outlet temperature of the compressor is less than or equal to a third temperature threshold value or the outlet temperature of the condenser is less than or equal to a fourth temperature threshold value, and controlling the first heating device to start working; the third temperature threshold is less than the first temperature threshold, and the fourth temperature threshold is less than the second temperature threshold.
13. The method of claim 9, further comprising: and determining that the outlet temperature of the compressor is less than or equal to a sixth temperature threshold value, and controlling the cooling device to stop working, wherein the sixth temperature threshold value is less than the fifth temperature threshold value.
14. Method according to any one of claims 9 to 13, wherein the first heating means is arranged between the fan and the receiving means.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802348A (en) * | 2021-08-17 | 2021-12-17 | 海信（山东）冰箱有限公司 | Drying method of drum dryer, storage, system and drum dryer |
| CN114687188A (en) * | 2020-12-30 | 2022-07-01 | 无锡小天鹅电器有限公司 | Drying control method, device, equipment and computer readable storage medium |
| WO2022199595A1 (en) * | 2021-03-23 | 2022-09-29 | 青岛海尔滚筒洗衣机有限公司 | Drying method of clothes dryer, and clothes dryer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342898A (en) * | 2013-08-08 | 2015-02-11 | 海尔集团公司 | Heat pump clothes dryer with auxiliary heating device and control method of heat pump clothes dryer |
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2019
- 2019-04-30 CN CN201910364241.7A patent/CN111851016B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342898A (en) * | 2013-08-08 | 2015-02-11 | 海尔集团公司 | Heat pump clothes dryer with auxiliary heating device and control method of heat pump clothes dryer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687188A (en) * | 2020-12-30 | 2022-07-01 | 无锡小天鹅电器有限公司 | Drying control method, device, equipment and computer readable storage medium |
| CN114687188B (en) * | 2020-12-30 | 2023-11-24 | 无锡小天鹅电器有限公司 | Drying control method, device, equipment and computer readable storage medium |
| WO2022199595A1 (en) * | 2021-03-23 | 2022-09-29 | 青岛海尔滚筒洗衣机有限公司 | Drying method of clothes dryer, and clothes dryer |
| CN113802348A (en) * | 2021-08-17 | 2021-12-17 | 海信（山东）冰箱有限公司 | Drying method of drum dryer, storage, system and drum dryer |
| CN113802348B (en) * | 2021-08-17 | 2024-03-29 | 海信冰箱有限公司 | Drying method, storage, system and drum dryer |
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| CN111851016B (en) | 2022-08-26 |
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