CN110055730B - Heat pump clothes dryer and control method - Google Patents
Heat pump clothes dryer and control method Download PDFInfo
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- CN110055730B CN110055730B CN201810049106.9A CN201810049106A CN110055730B CN 110055730 B CN110055730 B CN 110055730B CN 201810049106 A CN201810049106 A CN 201810049106A CN 110055730 B CN110055730 B CN 110055730B
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- 238000000034 method Methods 0.000 title claims description 13
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 238000010438 heat treatment Methods 0.000 claims abstract description 56
- 238000001035 drying Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 14
- 230000005494 condensation Effects 0.000 claims description 14
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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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
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/48—Control of the energy consumption
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/26—Heat pumps
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/28—Electric heating
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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
- D06F58/24—Condensing 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
-
- 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
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
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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)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a heat pump clothes dryer which comprises a circulating air duct and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated, at least the evaporator and the condenser are positioned in the circulating air duct, an auxiliary cooling device is also arranged in the circulating air duct, and the auxiliary cooling device is at least positioned on one side of the evaporator and is used for assisting in condensing circulating gas. The heat pump clothes dryer is provided with the auxiliary cooling device, so that the moisture in the condensed circulating air can be accelerated, and the heating rate can be accelerated; furthermore, the drying machine is also provided with an auxiliary heating device, so that the drying efficiency can be further improved under the condition of lower energy consumption.
Description
Technical Field
The invention belongs to the field of clothes dryers, and particularly relates to a heat pump clothes dryer and a control method.
Background
The working principle of the existing heat pump clothes dryer is as follows: the evaporator end of the heat pump system absorbs ambient heat and the condenser end dissipates heat. Fan drive air circulation flows through evaporimeter, condenser and a stoving section of thick bamboo, and the air is cooled off at the evaporimeter end, separates out moisture, becomes dry cold air, and dry cold air flows through the condenser end and is heated, becomes dry hot air, and dry hot air gets into in the dry clothing section of thick bamboo, takes away the moisture of clothing and becomes damp and hot air, and damp and hot air flows through the evaporimeter again, is cooled off and separates out moisture and form circulation wind path, heat reuse.
At present, because heat pump clothes dryer compares traditional electrical heating formula clothes dryer and has very big improvement in the energy consumption, heat pump clothes dryer during operation more power saving, low temperature is dried and is also littleer to the clothing damage. But the working efficiency of the evaporator and the condenser of the clothes drying system is influenced by the exhaust amount of the compressor. The evaporimeter can not the moisture in the complete condensation humid and hot air, influences its heat to the condenser supply on the one hand, and on the other hand also makes the air through the condenser not dry enough, needs better heat to heat, and the temperature rise of circulated air is slower, and the water in the clothing can not be quick turns into vapor, has increased the time of drying the clothing simultaneously, can not satisfy the requirement that the user needs fast drying. If the drying degree of the air passing through the condenser can be improved, the heating rate can be accelerated to a certain extent, and the drying efficiency is improved.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a heat pump clothes dryer and a control method. The heat pump clothes dryer is provided with the auxiliary cooling device, so that the moisture in the condensed circulating air can be accelerated, and the heating rate can be accelerated; furthermore, the drying machine is also provided with an auxiliary heating device, so that the drying efficiency can be further improved under the condition of lower energy consumption.
In order to solve the technical problems, the invention adopts the technical scheme that:
the first purpose of the invention is to provide a heat pump clothes dryer, which comprises a circulating air duct and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated, at least the evaporator and the condenser are positioned in the circulating air duct, an auxiliary cooling device is also arranged in the circulating air duct, and the auxiliary cooling device is at least positioned on one side of the evaporator and is used for assisting in condensing circulating gas.
The auxiliary cooling device comprises a first channel for passing a condensing medium and a second channel for passing circulating gas in the circulating air duct, and when the circulating gas passes through the second channel, the circulating gas exchanges heat with the condensing medium in the first channel, so that moisture in the circulating gas is condensed;
preferably, the first channel is perpendicular to the central axis of the circulating air duct, and the second channel is parallel to the central axis of the circulating air duct.
According to the further scheme, a condensing medium inlet and a condensing medium outlet are formed in the first channel for the condensing medium to pass through, the condensing medium inlet is communicated with the condensing medium inlet pipeline, and the condensing medium outlet is communicated with the condensing medium outlet pipeline.
In a further scheme, a first humidity detection device and/or a first temperature detection device are/is further arranged in the circulating air duct, and the first humidity detection device and/or the first temperature detection device are/is arranged between the evaporator and the condenser and used for detecting the humidity and/or the temperature of the rear side of the evaporator; or arranged at both sides of the evaporator to detect the humidity and/or temperature of the front and rear sides of the evaporator.
In a further scheme, an auxiliary heating device is also arranged in the circulating air duct, is positioned on the front side and/or the rear side of the condenser and is used for assisting in heating circulating gas in the circulating air duct;
preferably, the auxiliary heating device comprises a gas heating device and/or an electric heating device.
In a further scheme, a second temperature detection device and/or a second humidity detection device are/is further arranged in the circulating air duct, and the second temperature detection device and/or the second humidity detection device are/is arranged at the downstream of the condenser along the flowing direction of circulating air and are/is used for detecting the temperature and/or the humidity of the rear side of the condenser; or arranged at both sides of the condenser, and detects the temperature and/or humidity of the front and rear sides of the condenser.
The system further comprises a control device, the auxiliary cooling device and the auxiliary heating device are respectively connected with the control device, and the first temperature detection device and/or the first humidity detection device, the second temperature detection device and/or the second humidity detection device are respectively connected with the control device.
A second object of the present invention is to provide a control method of a heat pump clothes dryer according to the above-mentioned scheme, when the heat pump clothes dryer executes a drying procedure, the heat pump system is operated, and the evaporator condenses the circulating gas in the circulating air duct; in a certain time, when the humidity and/or the temperature of the circulating gas after the condensation action of the evaporator is higher than a preset value, the auxiliary cooling device starts to work to assist in condensing the circulating gas;
or, the heat pump dryer performs a fast drying process, the fast drying process including: the heat pump system, the auxiliary cooling device and/or the auxiliary heating device start to operate at the same time.
According to a further scheme, the control device controls the auxiliary cooling device to start working according to the value or the change difference of the humidity and/or the temperature detected by the first humidity detection device and/or the first temperature detection device;
preferably, the control device controls the auxiliary cooling device to start working when the control device judges that the value of the humidity detected by the first humidity detection device is greater than a preset value or the variation difference of the humidity is smaller than the preset value within a certain time.
According to a further scheme, the control device controls the auxiliary heating device to start working according to the value or difference of the temperature and/or the humidity detected by the second temperature detection device and/or the second humidity detection device;
preferably, the control device controls the auxiliary heating device to start working when the control device judges that the temperature detected by the second temperature detection device is less than the preset value or the temperature difference is less than the preset value within a certain time.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the heat pump clothes dryer is provided with the auxiliary cooling device, works when the evaporator is insufficiently condensed, can accelerate the condensation of moisture in circulating air, is favorable for accelerating the cooling rate and is also favorable for accelerating the heating rate of a downstream condenser;
2. the heat pump clothes dryer further comprises an auxiliary heating device, and the auxiliary heating device works when the condenser is insufficiently heated, so that the drying efficiency can be further improved under the condition of lower energy consumption.
3. The auxiliary cooling device and the auxiliary heating device can be independently controlled and can work simultaneously, so that the drying efficiency of the clothes dryer is improved together, and a quick drying mode is formed; the drying machine can also work independently and is respectively matched with a heat pump system, so that the energy consumption can be reduced, the drying efficiency can be improved, the user requirements are met, and the drying machine is particularly suitable for the heat pump clothes dryer in a low-temperature environment.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic configuration diagram of a heat pump dryer of the present invention.
In the figure: the device comprises a roller 1, a circulating air duct 2, a front air duct 21, a rear air duct 22, a compressor 3, a condenser 4, a throttling device 5, an evaporator 6, an auxiliary cooling device 7, an auxiliary heating device 8, a fan 9, a belt 10, a motor 11, a condensing medium inlet pipeline 12, a condensing medium outlet pipeline 13, a water faucet 14, a first humidity detection device 15 and a second temperature detection device 16.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, the present embodiment provides a heat pump clothes dryer, which includes a circulation air duct 2 and a heat pump system, the heat pump system includes a compressor 3, a condenser 4, a throttling device 5 and an evaporator 6 that are sequentially connected, at least the evaporator 6 and the condenser 4 are located in the circulation air duct 2, the circulation air duct 2 is further provided with an auxiliary cooling device 7, the auxiliary cooling device 7 is located at least on one side of the evaporator 6 to assist in condensing circulation air.
The heat pump dryer includes a cabinet and a drum 1, and the drum 1 is a space for receiving laundry to be treated, and is located in the cabinet. The drum 1 is communicated with the circulating air duct 2, and circulating air in the circulating air duct 2 enters the drum 1 to exchange heat with clothes so as to achieve the purpose of drying the clothes. The compressor 3, the condenser 4, the throttling device 5 and the evaporator 6 of the heat pump system are communicated in sequence through copper pipes, and medium in the copper pipes flows.
The components of the heat pump system may be located in the circulating air duct 2, or may be located partly in the circulating air duct 2, with at least the condenser 4 and the evaporator 6 being located in the circulating air duct 2. The condenser 4 is a heating component in the circulating air duct 2 of the clothes dryer and provides heat for circulating air; an evaporator 6: the refrigerating part in the circulating air path of the clothes dryer condenses the water vapor in the circulating air into water. The compressor 3 is a power supply unit for compressing a refrigerant and performing a refrigerant circulation operation.
The circulating air duct 2 comprises a rear air duct 22 communicated with the air inlet of the roller 1 and a front air duct 21 communicated with the air outlet of the roller 1. The condenser 4 is close to the rear air duct 22 side, and the evaporator 6 is close to the front air duct 21 side. The circulating air duct 2 is also provided with a fan 9 which provides power for the air in the circulating air duct 2, is arranged at the downstream of the condenser 4 and controls and discharges the dry heat heated by the condenser 4 into the roller 1. A belt 10 is arranged outside the roller 1, the motor 11 drives the roller 1 to rotate through the belt 10, and clothes in the roller 1 roll; while the fan 9 discharges the dry hot air into the drum 1 to dry the laundry.
In this embodiment, an auxiliary cooling device 7 is further provided in the circulating air duct 2. The auxiliary cooling device 7 is used for starting to work when the condensation capacity of the evaporator 6 is insufficient so as to accelerate the moisture in the condensation circulating air and improve the cooling efficiency; while also facilitating faster ramp up rates of the downstream evaporator 6.
The auxiliary cooling device 7 may be disposed upstream of the evaporator 6, downstream thereof, or both, in the direction of the circulating gas flow, so as to achieve better condensation.
The auxiliary cooling device 7 may be any element capable of condensing water vapor in the circulating air, and may be, for example, various heat exchangers, or may be a common condensing member. The specific structure and installation manner of the auxiliary cooling device 7 may be specifically set according to the type of the dryer and the specification of the circulation duct 2, as long as it can play a role of auxiliary condensing the water vapor in the circulation air.
As a specific scheme, the auxiliary cooling device 7 includes a first channel for passing the condensing medium and a second channel for passing the circulating gas in the circulating air duct 2, and when the circulating gas passes through the second channel, the circulating gas exchanges heat with the condensing medium in the first channel, and the moisture in the circulating gas is condensed.
The condensing medium in the scheme is a medium which can generate heat exchange and has lower temperature than damp and hot air; for example, the water may be tap water, low-temperature water, or air. The first channel and the second channel can be provided with a plurality of, and both interval sets up, increase circulating gas's heat exchange area, improve condensation efficiency.
More specifically, the auxiliary cooling device 7 may be a surface cooler, and a second passage is formed between first passages through which the condensing medium passes, that is, the circulating gas exchanges heat through the outer surface of the first passages. Thus, a good condensation effect can be achieved on the premise of reducing the space occupied by the circulating air duct 2.
Preferably, the first channel is perpendicular to the central axis of the circulating air duct 2, and the second channel is parallel to the central axis of the circulating air duct 2.
The first channel for the condensing medium to pass through is arranged vertically to the central axis of the circulating air duct 2 where the first channel is located, so that the heat exchange area can be increased; the second passageway and the central axis parallel arrangement of circulation wind channel 2, and both ends link up, so the second passageway that gets into auxiliary cooling device 7 that circulated air can have no hindrance carries out the recondensation once more, can not influence the flow direction of circulated air, can not produce turning, dead angle, both guarantee the security, realization heat transfer condensation that again can the maximum efficiency.
In a further scheme, a condensing medium inlet and a condensing medium outlet are arranged on the first channel for the condensing medium to pass through, the condensing medium inlet is communicated with the condensing medium inlet pipeline 12, and the condensing medium outlet is communicated with the condensing medium outlet pipeline 13.
For example, when the condensing medium is water, the condensing medium inlet pipe 12 may be an inlet pipe connected to the faucet 14, and the condensing medium outlet pipe 13 may be a drain pipe. Water enters the first channel from the water inlet pipe, is discharged from the water discharge pipe after exchanging heat with circulating gas in the second channel, forms a pipeline of a condensing medium, and finishes the condensing process.
Or, the condensing medium inlet pipeline 12 and the condensing medium outlet pipeline 13 may be connected to a cooling device, respectively, to form a condensing medium circulation pipeline. In the cooling device, the condensing medium is cooled, then enters the first channel of the auxiliary cooling device 7 through the condensing medium inlet pipeline 12 to carry out heat exchange and temperature rise, and then returns to the cooling device, so that the condensing medium can be recycled, and the condensing medium is saved.
The auxiliary cooling device 7 is disposed in front of or behind the evaporator 6, and is used for auxiliary condensation of water vapor in the circulating air when the evaporator 6 has insufficient condensation capacity.
In order to realize the automatic control of the auxiliary cooling device 7, a first humidity detection device 15 and/or a first temperature detection device are/is further arranged in the circulating air duct 2, the first humidity detection device 15 and/or the first temperature detection device are/is arranged between the evaporator 6 and the condenser 4, and the humidity and/or the temperature of the rear side of the evaporator 6 are/is detected; or provided at both sides of the evaporator 6 to detect the humidity and/or temperature of the front and rear sides of the evaporator 6.
In addition, the device also comprises a control device, and the auxiliary cooling device 7, the first temperature detection device and/or the first humidity detection device 15 are respectively connected with the control device.
The moist and hot circulating air discharged from the drum 1 is condensed after passing through the evaporator 6, and the humidity and accordingly the temperature are lowered. In order to determine whether the evaporator 6 can sufficiently cool the circulating gas, a humidity detection device may be used to detect the humidity of the cooled gas, the temperature of the cooled gas may be detected, or both a humidity detection device and a temperature detection device may be used to achieve more accurate determination. Besides detecting the value of the humidity and/or the temperature of the cooled gas as a judgment standard, the judgment can be carried out by calculating the difference value of the humidity and/or the temperature before and after cooling, so that the judgment accuracy is improved.
In this scheme, humidity detection device can be humidity transducer, and temperature-detecting device can be temperature sensor.
In addition, the embodiment also provides a control method of the heat pump clothes dryer, when the heat pump clothes dryer executes the drying program, the heat pump system works, the evaporator 6 condenses the circulating gas in the circulating air duct 2; and in a certain time, when the humidity and/or the temperature of the circulating gas after the condensation action of the evaporator 6 is higher than a preset value, the auxiliary cooling device 7 starts to work to assist in condensing the circulating gas.
The further scheme specifically comprises the following steps:
s1, the heat pump clothes dryer executes a clothes drying program, the heat pump system works, and the evaporator 6 cools the circulating gas;
s2, when the operation time is up, the control device determines whether to control the auxiliary cooling device 7 to start the operation according to the value or variation difference of the humidity and/or temperature detected by the first humidity detection device 15 and/or the first temperature detection device.
Specifically, the specific schemes of step S2 include, but are not limited to, the following:
scheme 1-1: a first humidity detection device 15 is arranged in the circulating air duct 2, and the first humidity detection device 15 is arranged between the evaporator 6 and the condenser 4 and used for detecting the humidity of the rear side of the evaporator 6. And in a certain working time, if the detected humidity value is higher than a preset value, the control device judges that the cooling capacity of the evaporator 6 is insufficient, and controls the auxiliary cooling device 7 to start working. The scheme is simple in arrangement and easy to implement.
Schemes 1-2: a first humidity detecting device 15 is provided upstream and downstream of the evaporator 6, respectively, to detect the humidity of the front and rear sides of the evaporator 6. Within a certain time, if the control device judges that the difference value of the detected humidity of the upstream humidity detection device and the detected humidity of the downstream humidity detection device is lower than the preset value, and the control device judges that the cooling capacity of the evaporator 6 is insufficient, the auxiliary cooling device 7 is controlled to start working. The scheme has higher detection accuracy.
Scheme 2-1: the circulating air duct 2 is provided with a first temperature detection device which is arranged between the evaporator 6 and the condenser 4 and is used for detecting the temperature of the rear side of the evaporator 6. And in a certain time, if the detected temperature value is higher than the preset value, the control device judges that the cooling capacity of the evaporator 6 is insufficient, and then the auxiliary cooling device 7 is controlled to start working.
Scheme 2-2: a first temperature detecting device is provided upstream and downstream of the evaporator 6, respectively, to detect the temperatures of the front and rear sides of the evaporator 6. And in a certain time, if the control device judges that the difference value of the detected temperature changes of the upstream temperature detection device and the downstream temperature detection device is lower than a preset value, and the control device judges that the cooling capacity of the evaporator 6 is insufficient, the auxiliary cooling device 7 is controlled to start working.
In the embodiment 3, the first humidity detection device 15 and the first temperature detection device are provided downstream of the evaporator 6, and the temperature and the humidity downstream thereof are detected at the same time. And in a certain working time, if the detected humidity value is higher than a preset value or the temperature value is higher than a preset value, the control device judges that the cooling capacity of the evaporator 6 is insufficient, and then the auxiliary cooling device 7 is controlled to start working.
Preferably, when the control device determines that the value of the humidity detected by the first humidity detection device 15 is greater than the preset value or the difference value of the change of the humidity is smaller than the preset value within a certain time, the control device controls the auxiliary cooling device 7 to start working.
Further, the auxiliary cooling device 7 is disposed downstream of the evaporator 6 in the flow direction of the circulating wind, and the first humidity detecting device 15 and/or the first temperature detecting device is disposed between the evaporator 6 and the auxiliary cooling device 7.
The control method of the heat pump clothes dryer comprises the following steps:
s1, the heat pump clothes dryer executes a clothes drying program, the heat pump system works, and the evaporator 6 cools the circulating gas;
s2, when working for a certain time, if the control device judges that the value of the humidity at the downstream of the evaporator 6 is larger than the preset value, or the difference value of the humidity at the upstream and the downstream of the evaporator 6 is smaller than the preset value, the step S3 is executed; otherwise, go to step S5;
s3, starting the auxiliary cooling device 7 to perform auxiliary condensation;
s4, when the humidity value of the control device is smaller than or equal to the preset value or the variation difference value is larger than or equal to the preset value, the auxiliary cooling device 7 is stopped;
s5, the evaporator 6 of the heat pump system continues to cool the circulating gas, and repeats steps S2-S4 until the drying process is finished.
Example two
As shown in fig. 1, this embodiment is a further limitation of the first embodiment, in order to increase the heating rate, an auxiliary heating device 8 is further disposed in the circulating air duct 2, and the auxiliary heating device 8 is located at the front side and/or the rear side of the condenser 4 to assist in heating the circulating air in the circulating air duct 2.
The auxiliary heating device 8 of this embodiment can set up the upper reaches at condenser 4, or set up the low reaches at condenser 4, also can set up at upper reaches and low reaches, can accelerate the rate of heating of circulated air, promotes the temperature that enters into the circulated air in the cylinder 1, improves drying efficiency, save time, promotes user experience.
The auxiliary heating device 8 of the present embodiment may include a gas heating device, and/or an electric heating device, or other devices capable of generating heat to heat the circulating gas. The auxiliary heating device 8 can work when the heating capacity of the condenser 4 is insufficient, so that the heating speed is increased, and the effect of quickly drying clothes is achieved.
In a further scheme, a second temperature detection device 16 and/or a second humidity detection device are/is further arranged in the circulating air duct 2, and along the flowing direction of circulating air, the second temperature detection device 16 and/or the second humidity detection device are/is arranged at the downstream of the condenser 4 and used for detecting the temperature and/or the humidity of the rear side of the condenser 4;
or disposed at both sides of the condenser 4, and detects the temperature and/or humidity of the front and rear sides of the condenser 4.
In addition, the auxiliary heating device 8, the second temperature detection device 16 and/or the second humidity detection device are/is connected with the control device respectively.
In the circulating air duct 2, the circulating air condensed by the evaporator 6 and the auxiliary cooling device 7 is changed into dry and cold air with low temperature, and the air is heated by the condenser 4 to be changed into dry and hot air and then sent back to the roller 1 of the clothes dryer to dry clothes. In this scheme, preferably adopt temperature-detecting device to detect the gas temperature after condenser 4 heats, also can detect the gas humidity after the heating, or adopt humidity detection device and temperature-detecting device so that reach more accurate judgement simultaneously.
In this scheme, temperature-detecting device can be temperature sensor, and humidity detection device can be humidity transducer.
In addition, the present embodiment further includes a control method of a heat pump dryer, including: the control device controls the auxiliary heating device 8 to start working according to the value or difference of the temperature and/or the humidity detected by the second temperature detection device 16 and/or the second humidity detection device;
preferably, when the control device determines that the temperature detected by the second temperature detecting device 16 is less than the preset value or the difference of the temperatures is less than the preset value within a certain time, the control device controls the auxiliary heating device 8 to start to work.
Further, the control method specifically comprises the following steps:
s1, the heat pump clothes dryer executes a clothes drying program, and the heat pump system works;
s2, when the operation time is up, the control device determines whether to control the auxiliary heating device 8 to start operation according to the value or variation difference of the temperature and/or humidity detected by the second temperature detection device 16 and/or the second humidity detection device.
Specifically, preferred embodiments of step S2 include, but are not limited to, the following:
scheme 1: a second temperature detection device 16 is provided in the circulating air duct 2, and is installed downstream of the condenser 4. After the heat pump clothes dryer works for a certain time, if the detected temperature value is lower than the preset value, the control device judges that the heating capacity of the condenser 4 is insufficient, and then the auxiliary heating device 8 is controlled to start working. The scheme is simple in arrangement and easy to implement.
Scheme 2: a second temperature detecting device 16 is provided upstream and downstream of the evaporator 6, respectively, to detect the temperatures of the front and rear sides of the condenser 4. And in a certain time, if the control device judges that the difference value of the detected temperature of the upstream temperature detection device and the detected temperature of the downstream temperature detection device is lower than the preset value, and the control device judges that the heating capacity of the condenser 4 is insufficient, the auxiliary heating device 8 is controlled to start working. The scheme has higher detection accuracy.
In the case of the embodiment 3, the second temperature detecting means 16 and the second humidity detecting means are provided downstream of the evaporator 6, and the temperature and the humidity downstream thereof are detected at the same time. And in a certain working time, if the detected humidity value is higher than a preset value or the temperature value is lower than the preset value, the control device judges that the heating capacity of the condenser 4 is insufficient, and then the auxiliary heating device 8 is controlled to start working.
The auxiliary cooling device 7 and the auxiliary heating device 8 can be used as supplements of a heat pump system, and are started to work when the function of the evaporator 6 or the condenser 4 is insufficient; the drying device can also start working with the heat pump system at the same time, is assisted by the start, can greatly accelerate the drying efficiency, and can be used as a quick drying method.
In another scheme, a rapid drying program can be set on the heat pump clothes dryer, under the program, the auxiliary heating device 8 and the heat pump system work simultaneously, and the control method comprises the following steps:
s1, the heat pump clothes dryer starts to work, and a user selects a quick drying mode;
and S2, the control device controls the heat pump system and the auxiliary heating device 8 to start working at the same time, and after a certain time, the quick drying program is completed.
In a further scheme, the auxiliary heating device 8, the auxiliary cooling device 7 and the heat pump system work simultaneously, and the control method comprises the following steps:
s1, the heat pump clothes dryer starts to work, and a user selects a quick drying mode;
and S2, the control device controls the heat pump system, the auxiliary heating device 8 and the auxiliary cooling device 7 to start working at the same time, and after a certain time, the quick drying program is completed.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A heat pump clothes dryer comprises a circulating air duct and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated, and at least the evaporator and the condenser are positioned in the circulating air duct; the auxiliary cooling device starts to work when the condensation capacity of the evaporator is insufficient; the auxiliary cooling device comprises a first channel for water to pass through and a second channel for circulating gas in the circulating air duct to pass through, when the circulating gas passes through the second channel, the circulating gas exchanges heat with water in the first channel, and moisture in the circulating gas is condensed; the first channel is perpendicular to the central axis of the circulating air duct, and the second channel is parallel to the central axis of the circulating air duct, and two ends of the second channel are communicated; the first channel is provided with a condensing medium inlet and a condensing medium outlet, the condensing medium inlet is communicated with the water inlet pipe, and the condensing medium outlet is communicated with the drain pipe; the cooling device is connected with the water inlet pipe and the water outlet pipe respectively, the condensed medium enters the cooling device through the water outlet pipe for cooling, then enters the first channel of the auxiliary cooling device through the water inlet pipe for heat exchange and temperature rise, and then returns to the cooling device to form a condensed medium circulating pipeline;
the upstream and the downstream of the evaporator are respectively provided with a first humidity detection device for detecting the humidity of the front side and the rear side of the evaporator; within a certain time, if the control device judges that the difference value of the detected humidity of the upstream humidity detection device and the detected humidity of the downstream humidity detection device is lower than a preset value, and the control device judges that the cooling capacity of the evaporator is insufficient, the auxiliary cooling device is controlled to start working;
the circulating air duct is also internally provided with an auxiliary heating device which is positioned at the front side and/or the rear side of the condenser and is used for assisting in heating circulating air in the circulating air duct;
the upstream and the downstream of the condenser are respectively provided with a second temperature detection device for detecting the temperature of the front side and the rear side of the condenser; and in a certain time, the control device judges whether the difference value of the detected temperature of the upstream temperature detection device and the detected temperature of the downstream temperature detection device is lower than a preset value, and if the control device judges that the heating capacity of the condenser is insufficient, the control device controls the auxiliary heating device to start working.
2. The heat pump clothes dryer of claim 1 wherein the auxiliary heating means comprises gas heating means, and/or electric heating means.
3. The heat pump clothes dryer of claim 1 further comprising a control device, wherein the auxiliary cooling device and the auxiliary heating device are respectively connected to the control device, and the first humidity detection device and the second temperature detection device are respectively connected to the control device.
4. A control method of a heat pump clothes dryer according to any one of claims 1 to 3, wherein the heat pump system is operated when the heat pump clothes dryer performs a drying process, and the evaporator condenses the circulating air in the circulating air passage; the upstream and the downstream of the evaporator are respectively provided with a first humidity detection device for detecting the humidity of the front side and the rear side of the evaporator; within a certain time, if the control device judges that the difference value of the detected humidity of the upstream humidity detection device and the detected humidity of the downstream humidity detection device is lower than a preset value, and the control device judges that the cooling capacity of the evaporator is insufficient, the auxiliary cooling device is controlled to start working; the upstream and the downstream of the condenser are respectively provided with a second temperature detection device for detecting the temperature of the front side and the rear side of the condenser; and in a certain time, the control device judges whether the difference value of the detected temperature of the upstream temperature detection device and the detected temperature of the downstream temperature detection device is lower than a preset value, and if the control device judges that the heating capacity of the condenser is insufficient, the control device controls the auxiliary heating device to start working.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810049106.9A CN110055730B (en) | 2018-01-18 | 2018-01-18 | Heat pump clothes dryer and control method |
| PCT/CN2018/124200 WO2019141056A1 (en) | 2018-01-18 | 2018-12-27 | Heat pump dryer and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810049106.9A CN110055730B (en) | 2018-01-18 | 2018-01-18 | Heat pump clothes dryer and control method |
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| CN110055730A CN110055730A (en) | 2019-07-26 |
| CN110055730B true CN110055730B (en) | 2022-01-04 |
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| CN201810049106.9A Active CN110055730B (en) | 2018-01-18 | 2018-01-18 | Heat pump clothes dryer and control method |
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| CN110607674A (en) * | 2019-10-22 | 2019-12-24 | 合肥品冠科技有限公司 | Drying system of clothes nursing machine and clothes nursing machine thereof |
| CN110747614A (en) * | 2019-11-04 | 2020-02-04 | 安徽欧斯福科技有限公司 | Leading-in hot cold circulation system in heat pump drying-machine place ahead |
| CN112824578B (en) * | 2019-11-21 | 2024-02-06 | 重庆海尔滚筒洗衣机有限公司 | Control method of clothes treatment equipment and clothes treatment equipment |
| CN113529377A (en) * | 2020-04-16 | 2021-10-22 | 宁波吉德电器有限公司 | Clothes drying equipment and control method thereof |
| CN113882128B (en) * | 2020-07-02 | 2023-09-29 | 重庆海尔滚筒洗衣机有限公司 | Heat pump clothes dryer and control method thereof |
| CN114318803B (en) * | 2020-09-30 | 2023-07-28 | 青岛海尔洗衣机有限公司 | Clothes dryer |
| CN114481577B (en) * | 2020-10-27 | 2024-01-23 | 上海海尔洗涤电器有限公司 | Clothes dryer and clothes drying control method |
| CN115074975B (en) * | 2021-03-16 | 2024-07-30 | 广东美的白色家电技术创新中心有限公司 | Clothes dryer control method, clothes dryer and readable storage medium |
| 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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| CN113584801A (en) * | 2021-09-02 | 2021-11-02 | 宁波奥达智能家居有限公司 | Temperature control device of heat exchanger |
| CN114775216B (en) * | 2022-04-29 | 2023-07-21 | 珠海格力电器股份有限公司 | Clothes treatment device, treatment method thereof and washing and drying machine |
| CN114775242B (en) * | 2022-04-29 | 2023-08-11 | 珠海格力电器股份有限公司 | Outer cylinder assembly and clothes drying equipment |
| CN115478418A (en) * | 2022-09-29 | 2022-12-16 | 江苏颐尚环境科技有限公司 | Heat pump clothes dryer matched with triple co-generation system |
| CN115451688A (en) * | 2022-10-10 | 2022-12-09 | 刘慧卿 | Heat pump drying equipment and control method |
| CN118621547A (en) * | 2024-08-12 | 2024-09-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat pump device and clothes treatment equipment |
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| CN110055730A (en) | 2019-07-26 |
| WO2019141056A1 (en) | 2019-07-25 |
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