CN103882654A - Process For Operating A Washer Dryer With A Heat Pump, And A Suitable Washer Dryer - Google Patents
Process For Operating A Washer Dryer With A Heat Pump, And A Suitable Washer Dryer Download PDFInfo
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- CN103882654A CN103882654A CN201310704020.2A CN201310704020A CN103882654A CN 103882654 A CN103882654 A CN 103882654A CN 201310704020 A CN201310704020 A CN 201310704020A CN 103882654 A CN103882654 A CN 103882654A
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- temperature
- evaporimeter
- heat pump
- waterborne liquid
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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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
- D06F33/69—Control of cleaning or disinfection of washer-dryer parts, e.g. of tubs
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- 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
- D06F2103/36—Flow or velocity
-
- 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
- D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
-
- 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
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/22—Lint collecting arrangements
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The invention relates to a process for operating a washer dryer comprising a tub 1, a drum 2 mounted in the tub 1 to be rotatable around an essentially horizontal axis 30 for receiving laundry items 5, a control unit 16, a process air circuit 4 comprising a liquefier 8 of a heat pump circuit 8,9,10,11 and a blower 6 to heat and circulate the heated air through the drum 2, an evaporator 9 to condense moisture from the process air coming out of the drum 2, a temperature sensor 19, 20, 21, and a rinsing device 12, wherein: (a) the temperature sensor 19, 20, 21 measures a temperature value T app in the process air circuit 4 or the heat pump circuit 8,9,10,11 which are indicative of a temperature of the refrigerant in the heat pump circuit 8,9,10,11; and (b) the rinsing device 12 flushes the evaporator 9 with an aqueous liquid 15 when the temperature T app reaches or exceeds an upper temperature limit T max set .
Description
Technical field
The present invention relates to a kind of for operating process and a kind of scrubbing-and-drying unit that is suitable for carrying out this process of the scrubbing-and-drying unit with heat pump circuit.The invention particularly relates to: a kind of process for operated wash drying machine and a kind of scrubbing-and-drying unit that is suitable for carrying out this process, described scrubbing-and-drying unit comprises: bucket; Cylinder, it is mounted in bucket can be around substantially horizontal axis rotation, for receiving clothes items; Control module; Process air loop, it comprises the liquefier of heat pump circuit and for adding hot-air and making heated air circulation by the hair-dryer of cylinder, for making evaporimeter, sensor and the flusher since the condensate moisture of cylinder processing air out.
Background technology
Roller washing machine is due to their conservation with to avoiding of clothing infringement and welcome.In recent years, scrubbing-and-drying unit, the roller washing machine with functions/drying become and get consumer reception, because they combine the function of washing machine and drying machine in compact mode.In addition, scrubbing-and-drying unit has been provided with water feed entrance, thereby water not only can be used for the washing of clothing, but also can be used for other treatment steps.When dry, this drum wash drying machine, by fan (described fan is located on the outside of bucket that comprises cylinder) admission of air, and for example, adds hot-air by air heater (evaporimeter of electric heater or heat pump).Heated air enters the inside of bucket and cylinder, and heated air absorbs moisture contained in clothing there.Moisture is pulled away, and is condensed, and is discharged from washing machine in the condensing unit on the outside that is installed on bucket.
Conventionally scrubbing-and-drying unit drying clothes at substantially constant temperature and in the default period.
In the time that scrubbing-and-drying unit comprises heat pump, importantly ensure that the pressure in temperature and/or the heat pump circuit of cold-producing medium is no more than particular value.
In the time that heat pump is used in scrubbing-and-drying unit, the cooling of the processing air of warm moist realized substantially in first heat exchanger (especially evaporimeter) of heat pump, the cold-producing medium that the heat of changing uses be used to evaporate heat pump in described the first interchanger in.Then, the cold-producing medium after evaporation is directed to second heat exchanger (being also referred to as " liquefier " herein) of heat pump via compressor, heat in described the second heat exchanger because the condensation of gaseous refrigerant is released.This heat is used in to be processed air and enters before cylinder and be heated.Cold-producing medium after liquefaction is by the directed evaporimeter of getting back to of expansion valve (described expansion valve has reduced the pressure of described cold-producing medium), so that there by again evaporating from processing absorption of air heat.
Therefore, heat and the moist processing absorption of air heat of heat pump from condenser, to the air heater of processing in air loop, and is back to processing air by this thermal release by this heat pump there.This heat pump can be implemented as compressor heat pump, and cooling agent circulates in this heat pump, and described cooling agent periodically evaporates in condenser along with absorbing from the heat of air stream, and along with by dissipation of heat to air stream and condensation in condenser.
Heat pump, especially operating in specific temperature range of compressor is best.When apply this compressor heat pump in drying machine time, can in liquefier, produce relatively high temperature, this may cause compressor be forced to close down.Or make the deterioration of efficiency of heat pump.This in the case of support compressor in air loop with additional heater in case obtain sooner or stronger processing air heat or shorter dry run even more obvious.
The common problem of Analysis of Heat Pump Drying System is that the lasting temperature in described process increases.The maximum temperature of heat pump circuit is limited by the maximum pressure in evaporating temperature and the heat pump of cold-producing medium.The different measure that is used for the maximum temperature that limits cold-producing medium is known.Can use by the electric motor fan adding and carry out cooling additional heat exchanger by the surrounding air of drying machine.In file CN200610153406A disclosed a kind of replacement scheme be by drying machine from closed loop condenser portion switch to open loop ventilating drier.On the other hand, file CN200710005537A discloses: the compressor that directly comes chiller-heat pump unit by electric motor fan with surrounding air.As the special solution for scrubbing-and-drying unit, file CN200710003005A discloses: available water-cooled additional oil-to-water heat exchanger from the beginning can be disposed in to be processed in air loop.
On the other hand, it is known cleaning by the heat exchanger in scrubbing-and-drying unit the fine hair of accumulating.For example, the scrubbing-and-drying unit that carries out fine hair filtration in condenser unit is known, and described filtration is undertaken by cleaning continually in the time that each dry run finishes with a small amount of running water in flushing process.The fine hair of accumulation is cleaned from condenser unit, is flushed in bucket and is pumped out to water drainage.
File EP2037035A1 discloses a kind of device for clothing processing with drying program, and it comprises: bucket; Be arranged in the rotary roller in bucket; For air heat being become to the heating component of heated dry air; Condensation, it is for the contained moisture of the relatively damp and hot air of condensation; With the blowing device for driving air circulation, wherein, air circulation loop is formed between described heating component and blowing device.The flusher that is accumulated in the fine hair in condensation for rinsing is arranged between condensation and blowing device.
US2011/0277334A1 and WO2011/165252A1 disclose the drying machine for clothing with heat pump, and wherein, the evaporimeter of heat pump cleans by spraying waterborne liquid with cleaning device.
Summary of the invention
Given this, the object of the invention is: provide a kind of for operating the process of the scrubbing-and-drying unit with heat pump, the cold-producing medium that this process can be avoided in heat pump being used in mode easily overheated; With a kind of scrubbing-and-drying unit that is suitable for carrying out this process is provided.
According to the present invention, this object realizes by the scrubbing-and-drying unit of a kind of process for operated wash drying machine and a kind of feature with corresponding independent claims.The preferred embodiments of the present invention describe in detail in the corresponding dependent claims.Although do not point out in detail herein, the preferred embodiment of described scrubbing-and-drying unit is corresponding to the preferred embodiment of described process.
Therefore, the present invention relates to a kind of process for operated wash drying machine, described scrubbing-and-drying unit comprises: bucket; Cylinder, it is mounted in bucket can be around substantially horizontal axis rotation, for receiving clothes items; Control module; Process air loop, it comprises the liquefier of heat pump circuit and for adding hot-air and making heated air circulation by the hair-dryer of cylinder, for making evaporimeter, temperature sensor and the flusher since the condensate moisture of cylinder processing air out, wherein
(a) described temperature sensor measurement process in air loop or heat pump circuit in representative heat pump circuit in the temperature value T of refrigerant temperature
app; With
(b) work as temperature T
appmeet or exceed ceiling temperature T
max settime, described flusher use liquid wash evaporimeter.
T
max setvalue by depending on the character of temperature sensor, especially depend on the position of temperature sensor.For example, T
max setthe maximum temperature of the efficient and safe use defined that can very to approach by cold-producing medium manufacturer be cold-producing medium.Another factor may be the highest permissible coil temperature of the drive motors of compressor.This is subject to used isolation effect, and can be for example 115 ° of C.To T
max setinfluential another limiting factor is the lubricant using in compressor.Too high temperature can cause carbonization, thereby causes the inefficacy of lubricant, and finally causes the inefficacy of compressor.The pressure of the gaseous refrigerant after compressor is also a key factor, and described pressure must be suitable with the rigidity of used pipe.
Typical limit temperature T in household washing drying machine
max setwith common compressor be for example that this cold-producing medium is 100 ° of C in the refrigerant temperature in the exit of compressor for using R134a as the situation of cold-producing medium, or be 75 ° of C in the condensation temperature in the exit of liquefier.Or in an embodiment, for the processing air themperature in the exit of liquefier, T
max setcan be set as 65 ° of C.
In a preferred embodiment of the invention, air temperature sensor (herein also referred to as " the first temperature sensor ") is placed between bucket and evaporimeter in processing air loop.
In addition,, situation is also preferred: refrigerant temperature sensors is placed in heat pump circuit, and the temperature T that recorded by refrigerant temperature sensors of flusher
hpmeet or exceed predetermined value T
hp maxshi Chongxi evaporimeter.Therefore, T herein
max sett
hp max, T
appcorresponding to T
hp.
In dry run, process air conventionally along flowing with the direction of the opposite direction of the waterborne liquid from flusher.This can cause water to be splashed towards hair-dryer and liquefier.Therefore, hair-dryer is preferably closed down in the process of step (b).
Hair-dryer preferred orientation is between evaporimeter and liquefier.
On the other hand, have been found that air stream in the direction identical with the direction of the waterborne liquid from flusher can contribute to cooling in performing step (b), even also contributes to the clean of evaporimeter.
Therefore, in a preferred embodiment of the invention, in the process of step (b), air stream flow direction along waterborne liquid in processing air loop forms.This can realize in a different manner.For example, hair-dryer can be that hair-dryer that permission operates on both direction.The reversion of the direction of rotation now, using in dry run will form a little strong air stream on the flow direction of waterborne liquid.
In another preferred embodiment, waterborne liquid provides with two parts at least in step (b).In this case, below situation be useful especially: the waterborne liquid of the first ormal weight rinses evaporimeter for flusher, then, at default period Δ t
1interior waterborne liquid is collected in bucket, then, before flusher rinses evaporimeter again with the waterborne liquid of the second amount, made the default period Δ t of pump operation
2pump the waterborne liquid being collected in bucket.
The half of the desired amount of (wherein, rinse stage is made up of at least two rinsing steps) available waterborne liquid that is expected to be useful in rinse stage (b) is implemented the first rinsing step in a preferred embodiment.Then, for example can pass through monitor temperature T
appcheck the cooling whether abundant of evaporimeter.Therefore, second or rinsing step subsequently can adjust according to the amount of waterborne liquid etc.
The amount of the waterborne liquid that will use in step (b) valuably based on be stored in control module, T
apptemperature T with the waterborne liquid providing for flusher
aqbetween relation determine.This relation will be considered the position of temperature sensor.If running water is used as waterborne liquid, temperature T
aqwith regard to the temperature of desirable one-tenth running water.But, can provide another temperature sensor that is adjacent to flusher to measure T
aq.
Water can be used as waterborne liquid.In this case, using is useful from the water of public water supply.Can supply into and assign to improve cooling and/or cleaning effect to this water extraction.In a preferred process according to the present invention, waterborne liquid not only serves as cooling liquid, but also serves as watersoluble cleaning liquid and comprise the composition that can dissolve the inorganic sediments on sensor.A kind of useful composition can be the acid that contributes to dissolve calcium carbonate.For this reason, this composition can provide in scrubbing-and-drying unit, and is combined with waterborne liquid in suitable mode before waterborne liquid is used to flusher.Help cooling and/or clean composition if waterborne liquid includes, it is exactly useful implementing the second rinsing step with pure water.
Waterborne liquid is preferably from the running water of water system.But, can add condensate.Due in the time that the temperature of waterborne liquid is low, can in step (b), implement coolingly efficiently, therefore, the consumption of relatively warm condensate is normally few.In addition, also consider the cleaning effect of step (b), it is preferred using relatively clean water liquid.In order to determine clean degree, can use suitable sensor, for example turbidity transducer.Scrubbing-and-drying unit is depended in the placement of this sensor, especially depends on the position that condensate is stored.
Because in common scrubbing-and-drying unit, condensate is conventionally pumped out to the position of outside drainage and is directed to bucket from it, therefore, if use condensate, conventionally need to provide condensate.
In order to save more water, it is more useful that suitable reservoir vessel is provided in scrubbing-and-drying unit, and the waterborne liquid using in step (b) and condensate or the comparison clean water from washing process can be stored in described reservoir vessel.Comparison clean water from the last rinse step that clothes items is implemented can be used as the latter.Therefore, in process of the present invention, waterborne liquid is preferably transported in reservoir vessel set in scrubbing-and-drying unit, for the use subsequently in scrubbing-and-drying unit.
Stored waterborne liquid can use in washing process, or uses as the waterborne liquid in the step (b) of process of the present invention.
In a preferred embodiment of this process, the flushing in step (b) proceeds to T
appreach or lower than lower temperature limit T
min set<T
max set.
In a preferred process of the present invention, cylinder rotates in the process of rinse stage (b), thereby causes evaporimeter vibration, to help the heat transmission between cold-producing medium and waterborne liquid in step (b).In addition, the mobile oscillatory system vibration that is derived from the cylinder of rotation provides and has hindered the power of any adhesion at sensor surface place, and can contribute to removing of fine hair and inorganic sediments.
After rinsing step, conventionally in scrubbing-and-drying unit, then implement dry run, until clothes items is dried.Therefore, in step (b) afterwards, dry run continues to carry out in step (c), until the default time expires or until reach the default aridity of clothes items.For example,, when reaching the high dry temperature T of regulation
max dryand/or the lower humidity level H of regulation
min drytime, by closing down heat pump and hair-dryer stops drying stage.For this reason, humidity sensor also can be arranged in scrubbing-and-drying unit, is preferably arranged on the exit of cylinder, arranges near the first temperature sensor (if existence).
Cleaning is implemented after the dry run of being everlasting has completed in scrubbing-and-drying unit, to remove any fine hair depositing in evaporimeter and adjacent pipes in described process.In this respect, the present invention allows to improve final cleaning, makes the necessary water using less.In some cases, even also may omit final cleaning.
Therefore, in a preferred embodiment of the invention, the waterborne liquid by a certain amount in step (c) step (d) afterwards rinses evaporimeter, and described amount is corresponding to the scheduled volume Q of the final rinsing step for scrubbing-and-drying unit
finamount Q with the waterborne liquid using in step (b)
bbetween poor." final rinsing step " is the rinsing step after dry run has stopped.Therefore, if the amount Q of the waterborne liquid using in step (b)
bcompare Q
finlarger, described difference is born, and last cleaning may also be exempted.
In a preferred embodiment of this process, waterborne liquid is transported in reservoir vessel set in scrubbing-and-drying unit, for the use subsequently in scrubbing-and-drying unit.More preferably, waterborne liquid is only transported to reservoir vessel in the time that the given upper limit of impurity concentration is not exceeded.
In addition, the invention still further relates to so a kind of scrubbing-and-drying unit, it comprises: bucket; Cylinder, it is mounted in bucket can be around substantially horizontal axis rotation, for receiving clothes items; Control module; Process air loop, it comprises the liquefier of heat pump circuit and for adding hot-air and make heated air circulation by the hair-dryer of cylinder; For making evaporimeter, temperature sensor and the flusher since the condensate moisture of cylinder processing air out, wherein, described control module is suitable for carrying out so a kind of process, in this process:
(a) described temperature sensor measurement process in air loop or heat pump circuit in representative heat pump circuit in the temperature value T of refrigerant temperature
app; With
(b) work as temperature T
appmeet or exceed ceiling temperature T
max settime, described flusher use liquid wash evaporimeter.
Temperature sensor can be placed between bucket and evaporimeter in processing air loop.But the use of temperature sensor between bucket and evaporimeter may cause such problem: fine hair and inorganic sediments gathering on sensor can easily occur., flushing water comprises the carbonate that its solubility reduces along with the rising of temperature.Therefore, higher temperature causes that the state that poised state can deposit towards calcium carbonate moves.Deposit also can cause the formation of lime stone on sensor, and this may hinder temperature sensor and normal operation scrubbing-and-drying unit.Obvious especially in the scrubbing-and-drying unit that is accumulated in the evaporimeter with heat pump of fine hair and inorganic sediments, because a large amount of fine hair is accumulated on evaporimeter conventionally.This fine hair for example will hinder the correct measurement of the temperature of processing air, and may stop the accurate operation of scrubbing-and-drying unit.
Therefore, in a preferred embodiment, scrubbing-and-drying unit comprises the first temperature sensor and the second temperature sensor, to can determine better the temperature of processing in air loop, described temperature is as the instruction of the temperature of the cold-producing medium in heat pump circuit.The temperature difference recording between these two sensors can be used for determining and eliminating fine hair or any impact of other deposits on temperature measurement result.This can realize in the following manner: examine by means of hair-dryer be driven through the processing air of processing air loop at the temperature difference Δ T at the first temperature sensor and the second temperature sensor place the range delta T in regulation
admin.That is, if two temperature sensors all normal operation, show that the first temperature sensor is fully clean, the temperature difference between first and second temperature sensor recording just should be little.The second temperature sensor is placed between liquefier and bucket valuably, for example, in the exit of liquefier or near the entrance of bucket.But, it should be noted that the first temperature sensor can be used as unique temperature sensor in principle, and be placed between liquefier and bucket.Therefore, can control better the temperature of the cold-producing medium in heat pump circuit.
The first and/or second temperature sensor preferably has strip shape main body and temperature sensitive end.The first and/or second temperature sensor is most preferably NTC temperature sensor.Valuably, described temperature sensor tilts in the direction of evaporimeter.
The flusher of the scrubbing-and-drying unit using in process of the present invention is conventionally also for clean evaporimeter and contiguous member.Therefore, flusher is located at the evaporimeter top of scrubbing-and-drying unit conventionally.
Conventionally, scrubbing-and-drying unit is communicated to water system, thereby can guide water to pass through cleaning agent flusher, and the cleaning agent of composition or auxiliary agent can be flushed in bucket.This water system can be included in the branch of heat exchanger, serves as the cooling liquid in heat exchanger thereby can be flusher from the water of water system.
Scrubbing-and-drying unit comprises suds exhaust system at its bottom place conventionally, and described suds exhaust system comprises the pipe of draining valve, soap water pump and other necessity.In addition, scrubbing-and-drying unit generally includes clothing agitator and/or the device that bails.Multiple, especially three or four such clothing agitators and/or the device that bails are preferred.Clothing agitator can be used as integrated member and is cast in cylinder, or embeds in cylinder as additional member.
Scrubbing-and-drying unit has the switching mechanism for making drum rotating and stopping conventionally.In addition, scrubbing-and-drying unit according to the present invention preferably includes the sensor for determining the amount of liquid that is placed in suds container.This sensor is placed in the bottom part of bucket conventionally.The traditional sensors that is used for the height level who determines water can serve as the sensor for determining the amount of liquid that is placed in bucket (being suds containers), and the sensor signal of this sensor is tracked in described process.This sensor is measured the time gradient of hydrostatic pressure p and/or hydrostatic pressure p conventionally, and (Δ p/ Δ t)
1.
In addition, scrubbing-and-drying unit generally includes the heater for directly heating waterborne liquid, for example suds.Conventionally in bucket, be arranged in below cylinder taking " hot-water heating system (water heating) " as the heater of term herein.
The present invention has many advantages.The operation of scrubbing-and-drying unit can accurately be controlled, thereby can in the situation that not using another heat exchanger, avoid the risk of the refrigerant superheat of heat pump.In addition; in certain embodiments; the present invention not only can ensure the efficient and safe operation of heat pump, but also the suitable temperature upper limit that can be used for refrigerant temperature by selection is protected predispose to damage clothes items, for example wool fabric, silk fabrics or lace in dry run.Because water can be reused or the final cleaning of dry run after having completed can carry out or even can be omitted with less water, therefore, these advantages can realize additional water consumption in an embodiment in the case of not having.Therefore, scrubbing-and-drying unit can operation safely in the situation that not using large water gaging.
Brief description of the drawings
Independent figure below with reference to accompanying drawings describes a preferred embodiment of the present invention.
Fig. 1 shows scrubbing-and-drying unit according to an embodiment of the invention, can in this scrubbing-and-drying unit, implement process of the present invention.Other embodiment also can expect.
Detailed description of the invention
The scrubbing-and-drying unit of this embodiment comprises that barrel 1(is also referred to as " suds container ") and cylinder 2, described cylinder 2 is arranged in bucket 1, thus cylinder 2 can rotate around substantially horizontal rotation 30, for receiving clothes items 5.Pending clothes items 5 is placed in cylinder 2.
This scrubbing-and-drying unit also comprises: control module 7; Process air loop 4, it comprises the compressor 10 of liquefier 8, evaporimeter 9, heat pump and expansion valve 11 and for adding hot-air and making heated air circulation by the hair-dryer 6 of cylinder 2; For making the evaporimeter since the condensate moisture of cylinder 2 processing air out; Three temperature sensors 19,20,21; With flusher 12.Bucket 1 is communicated to the conduct of heat pump for the evaporimeter 9 of the heat exchanger of heat treated air by means of the flexible hose 29 as communication means.
Bucket is discharged conduit 23 via suds and is communicated to pump 14, and described pump 14 can make water-based bucket liquid 24, for example suds emit from bucket 1, and discharges scrubbing-and-drying unit via waste pipe 25.Cylinder 2 is driven by means of drive motors 3.
For the wet clothes items in the cylinder 2 of the scrubbing-and-drying unit (described scrubbing-and-drying unit operates according to the principle of circulating air) of dry Fig. 1, the air heating by means of liquefier 8 (" processing air ") is driven through and processes air loop 4 by means of hair-dryer 6.Therefore, heated processing air enters respectively bucket 1 and cylinder 2 by sleeve pipe 28.Process air and absorbed the moisture from wet clothes items 5 by processing air described in cylinder 2(at cylinder 2 places) after the moist and warm processing air that the forms rear portion that arrives bucket 1 export 18 places, then arrive evaporimeter 9 places.At evaporimeter 9 places, process cooled dose of air, for example R134a cooling, and process moisture contained in air due to cooling being condensed in evaporimeter 8.
In drying stage process, fine hair 17 is accumulated in the wet surface in the air conduit between bucket 1 and evaporimeter 9, and is especially accumulated in the fin place of the porch of evaporimeter 9.Making described surface become wet water is the condensed water that the condensation of the moisture from evaporimeter 9 produces.Condensate can be collected in condensate (not shown herein), maybe can flow back into bucket 1 and finally flow back into suds to discharge conduit 23, and described condensate can be discharged by waste pipe 25 by this.But conventionally condensate is directed to bucket 1, and by pump 14 pumps to the outside of scrubbing-and-drying unit, drainage normally.
Again heated by the liquefier 8 of heat pump circuit at the dried air of processing air loop 4 internal flows, be then again introduced in cylinder 2 via sleeve pipe 28.Large hollow arrow represents the flow direction of warm air.Short filled arrows represents the flow direction of waterborne liquid, for example (from the beginning) water or suds.
Scrubbing-and-drying unit shown in Fig. 1 can process according to the present invention be implemented management to refrigerant temperature and cooling rinse stage.For this reason, the scrubbing-and-drying unit of Fig. 1 has three temperature sensors 19,20,21 and is placed on the flusher 12 of evaporimeter 9 tops herein.
Therefore, the scrubbing-and-drying unit of Fig. 1 can be implemented process of the present invention.In a process for operated wash drying machine of the present invention, the first temperature sensor 20 is measured the temperature value T that represents the refrigerant temperature in heat pump circuit 8,9,10,11
app.Work as temperature T
appmeet or exceed temperature upper limit T
max settime, flusher 12 use liquid 15, especially running water rinse evaporimeter 9.
Temperature in this process approaches the end of dry run and raises.Change in order to observe with detecting temperature, two temperature sensors (, be placed on first temperature sensor 20 in barrel exit and be placed in this embodiment the second temperature sensor 21 of barrel porch) are placed on and process in air loop in this embodiment.The temperature signal of these two temperature sensors is provided to control module 16, and described control module 16 can start cooling and flushing process in the time that temperature conditions of the present invention meets.In order to control more accurately cold-producing medium, refrigerant temperature sensors 19 is also placed between evaporimeter 9 and compressor 10.
Fig. 1 also shows control module 7, and the described control module 7 also signal based on accepting from the first and second temperature sensors 20,21 and/or refrigerant temperature sensors 19 is controlled the operation of scrubbing-and-drying unit, and especially can control process of the present invention.Water valve 13 and hair-dryer 6 and water heater 22 are controlled according to program work flow process by control module 7, described program work flow process and time-program(me) and/or relevant with the realization of some parameter value recording, described value is for example the speed of height level (for example suds height level), suds temperature and the cylinder 2 of waterborne liquid.
Drying stage is implemented conventionally in the following manner: make to process air and repeatedly cycle through processing air loop 4, until obtain the aridity of expected degree in clothes items 5.The scrubbing-and-drying unit of Fig. 1 can accurately be controlled refrigerant temperature, makes not only can accurately survey refrigerant temperature, but also can be by rinse to implement (being cold-producing medium) high efficiency cooling of evaporimeter with cold running water.In addition, can control efficiently drying stage, make: drying stage is undertaken by controlling hair-dryer 6 and evaporimeter 9, thus the maximum temperature T of the regulation of the temperature for processing air
maxbe not exceeded.
For cooling/flushing process, the water valve 13 being communicated with water feed system 26 will be opened under the control at control module 7, and water is sprayed to evaporimeter 9 as waterborne liquid by rinsing unit 12, thereby the region at the processing air intake place of surface, the especially evaporimeter 9 of clean evaporimeter 9.
In process to be performed, hair-dryer 6 is closed down valuably in cooling/rinsing step process.Closing down of hair-dryer 6 can avoid water to be splashed to hair-dryer 6 and liquefier 8.
Except this cooling effect, in evaporimeter 9 and bucket 1 and evaporimeter 9 between flexible hose (communication means) 29 in the fine hair of accumulation also washed off.Flushing water and fine hair 17 are directed to bucket 1, and can are pumped to the outside of scrubbing-and-drying unit by pump 14 and not re-use in this embodiment.In the process of rinsing with cold running water, the air conduit 29 between evaporimeter 9, bucket 1 and evaporimeter 9 and the bottom section of bucket are cooled, and have removed heat energy from this process.Therefore, reduce system temperature, and kept temperature levels lower than a certain value, thereby avoided the overheated and too high pressure in heat pump.
In the embodiment in figure 1, provide the reservoir vessel 31 for waterborne liquid.In reservoir vessel 31, can store the waterborne liquid from bucket 1.Waterborne liquid can be condensate, from the waterborne liquid using in the comparison clean water of the washing process carrying out for clothes items 5 or rinse cycle or the step (b) of process of the present invention.Stored waterborne liquid can be used for various process in scrubbing-and-drying unit, be included in the step (b) of this process and reuse as waterborne liquid.
Reference numerals list
1 barrel; Suds container
2 cylinders
3 drive motors
4 process air loop
5 clothes items
6 hair-dryers
7 control modules
8(heat pump) liquefier
9 evaporimeters
10 compressors
11 expansion valves
12 flushers
13 water valves
14 pumps; Waste water pump
15 for rinsing the waterborne liquid of evaporimeter
16 condensate feed conduits
17 fine hair
The rear portion outlet of 18 barrels
Refrigerant temperature sensors in 19 heat pump circuit
The first temperature sensor between 20 barrels and evaporimeter; Air temperature sensor
The second temperature sensor of 21 barrels of porch
22 water heaters
23 suds are discharged conduit
24 water-based bucket liquid
25 waste pipes; (flexibility) flexible pipe
26 water feed pipelines
27 (for approaching the inside of cylinder)
28 sleeve pipes
Communication means between 29 barrels and heat exchanger; (flexibility) flexible pipe
The rotation of 30 cylinders
31 reservoir vessels
Claims (15)
1. for a process for operated wash drying machine, described scrubbing-and-drying unit comprises: bucket (1); Cylinder (2), it is mounted in bucket (1) can be around substantially horizontal axis (30) rotation, for receiving clothes items (5); Control module (7); Process air loop (4), it comprises the liquefier (8) of heat pump circuit (8,9,10,11) and for adding hot-air and making heated air circulation by the hair-dryer (6) of cylinder (2); Be used for making the evaporimeter (9) since the condensate moisture of cylinder (2) processing air out; Temperature sensor (19,20,21); And flusher (12),
It is characterized in that,
(a) described temperature sensor (19,20,21) measure process in air loop (4) or heat pump circuit (8,9,10,11) in representative heat pump circuit (8,9,10,11) in the temperature value T of refrigerant temperature
app; With
(b) work as temperature T
appmeet or exceed ceiling temperature T
max settime, described flusher (12) use liquid (15) rinses evaporimeter (9).
2. process as claimed in claim 1, is characterized in that, air temperature sensor (20) is placed between bucket (1) and evaporimeter (9) in processing air loop (4).
3. process as claimed in claim 1 or 2, is characterized in that, refrigerant temperature sensors (19) is placed in heat pump circuit (8,9,10,11), and described flusher (12) is in the temperature T being recorded by described refrigerant temperature sensors
hpmeet or exceed predetermined value T
hp maxshi Chongxi evaporimeter (9).
4. as the process as described in arbitrary in claim 1-3, it is characterized in that, described hair-dryer (6) is closed down in the process of step (b).
5. as the process as described in arbitrary in claim 1-3, it is characterized in that, in the process of step (b), air stream produces processing the flow direction along described waterborne liquid in air loop (4).
6. as the process as described in arbitrary in claim 1-5, it is characterized in that, in step (b), described waterborne liquid (15) provides with two parts at least.
7. process as claimed in claim 6, is characterized in that, described flusher (12) rinses evaporimeter (9) with the waterborne liquid (15) of the first ormal weight, then, and at default period Δ t
1interior by waterborne liquid collect bucket (1) in, subsequently, again rinse evaporimeter (9) before at described flusher (12) with the waterborne liquid (15) of the second amount, make the default period Δ t of pump operation
2pump the waterborne liquid (24) being collected in bucket (1).
8. as the process as described in arbitrary in claim 1-7, it is characterized in that, the amount of the waterborne liquid (15) that will use in step (b) based on be stored in control module (7), T
apptemperature T with the waterborne liquid (15) providing for described flusher (12)
aqbetween relation determine
9. as the process as described in arbitrary in claim 1-8, it is characterized in that, described waterborne liquid (15) is the running water from water system (26).
10. as the process as described in arbitrary in claim 1-9, it is characterized in that, the flushing in step (b) proceeds to temperature T
appreach or lower than lower temperature limit T
min set<T
max set.
11. as the process as described in arbitrary in claim 1-10, it is characterized in that, in step (b) afterwards, dry run continues to continue with step (c), until the default time expires or until reach the default aridity of clothes items.
12. processes as claimed in claim 11, is characterized in that, the waterborne liquid (15) by a certain amount in step (c) step (d) afterwards rinses evaporimeter (9), and described amount is corresponding to the scheduled volume Q of the final rinsing step for scrubbing-and-drying unit
finamount Q with the waterborne liquid using in step (b)
bbetween poor.
13. as the process as described in arbitrary in claim 1-12, it is characterized in that, described waterborne liquid (15) is transported in reservoir vessel set in scrubbing-and-drying unit (31), for the use subsequently in scrubbing-and-drying unit.
14. processes as claimed in claim 13, is characterized in that, described waterborne liquid is only transported to reservoir vessel (31) in the time that the given upper limit of impurity concentration is not exceeded.
15. 1 kinds of scrubbing-and-drying units, comprising: bucket (1); Cylinder (2), it is mounted in bucket (1) can be around substantially horizontal axis (30) rotation, for receiving clothes items (5); Control module (7); Process air loop (4), it comprises the liquefier (8) of heat pump circuit (8,9,10,11) and for adding hot-air and making heated air circulation by the hair-dryer (6) of cylinder (2); Be used for making the evaporimeter (9) since the condensate moisture of cylinder (2) processing air out; Temperature sensor (19,20,21); And flusher (12),
It is characterized in that, described control module (7) is suitable for carrying out following process:
(a) described temperature sensor (19,20,21) measure process in air loop (4) or heat pump circuit (8,9,10,11) in representative heat pump circuit (8,9,10,11) in the temperature value T of refrigerant temperature
app; With
(b) work as temperature T
appmeet or exceed ceiling temperature T
max settime, described flusher (12) use liquid (15) rinses evaporimeter (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12198525.3 | 2012-12-20 | ||
| EP12198525.3A EP2746455A1 (en) | 2012-12-20 | 2012-12-20 | Process for operating a washer dryer with a heat pump, and a suitable washer dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103882654A true CN103882654A (en) | 2014-06-25 |
Family
ID=47552804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310704020.2A Pending CN103882654A (en) | 2012-12-20 | 2013-12-19 | Process For Operating A Washer Dryer With A Heat Pump, And A Suitable Washer Dryer |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2746455A1 (en) |
| CN (1) | CN103882654A (en) |
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| CN105648727A (en) * | 2014-11-13 | 2016-06-08 | 青岛海尔智能技术研发有限公司 | Washing machine and drying method |
| CN105671915A (en) * | 2016-03-24 | 2016-06-15 | 海信（山东）冰箱有限公司 | Drying washing machine with clothes nursing function and control method of drying washing machine |
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| WO2018196648A1 (en) * | 2017-04-28 | 2018-11-01 | 青岛海尔洗衣机有限公司 | Evaporator rinsing device and method for laundry drier, and laundry drier |
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- 2012-12-20 EP EP12198525.3A patent/EP2746455A1/en not_active Withdrawn
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