CN109208287A

CN109208287A - Operate the method and garment drying apparatus of garment drying apparatus

Info

Publication number: CN109208287A
Application number: CN201810725357.4A
Authority: CN
Inventors: 达维德·西洛; 马尔科·贝林; 亚历山德罗·达拉罗萨; 法比奥·加尔泽纳; 法比奥·帕苏特
Original assignee: Electrolux Appliances AB
Current assignee: Electrolux Appliances AB
Priority date: 2017-07-07
Filing date: 2018-07-04
Publication date: 2019-01-15
Anticipated expiration: 2038-07-04
Also published as: CN109208287B; EP3425107B1; EP3425107A1

Abstract

The present invention relates to a kind of methods and garment drying apparatus for operating garment drying apparatus.The garment drying apparatus includes process chamber, heat pump system and selector.The described method includes: setting indicates the first Limit temperature value and the second Limit temperature value of the limiting temperature of compressor；A drying program is selected among multiple drying programs and starts the drying stage of the drying program；Sensing indicates the operating parameter of the humidity of the clothing in process chamber；Measurement indicates the temperature value of the temperature of the compressor；The first Limit temperature value and the second Limit temperature value are selected respectively for the first group of multiple value and second group of multiple value of the operating parameter of the humidity for indicating clothing during drying stage sensed；And in the case where measured temperature value is higher than the first Limit temperature value or the second Limit temperature value, limits the power supply to the compressor or disconnect the compressor.

Description

Operate the method and garment drying apparatus of garment drying apparatus

Technical field

The present invention relates to the method for controlling heat pump laundry dryer device, which specifically includes wherein process The drying cycles that the relatively high temperature of air is achieved.

Background technique

Heat pump drier due to they drying efficiency and be used widely.

However, heat pump laundry dryer is not normally designed to operate at such high temperatures, that is, the heat pump cloth drying Machine usually process air at a temperature of operate, and the temperature lower than 50 DEG C is therefore reached by clothing, the process air Temperature is typically considered to sufficiently high standard garments or textile to be dried.If heat pump laundry dryer is in process air In reach temperature higher than 50 DEG C -55 DEG C, it may occur that safety measure activation, safety measure activation prevents or limitation drying Machine function or the temperature of process air further increase.

For purposes of this disclosure, outdoor textile has waterproof and breathable films material with microcellular structure.

In general, including durable waterproof agent (DWR), the durable waterproof agent for the clothes that outdoor environment is designed and realizes It (DWR) is to be added to fabric so that fabric waterproof or hydrophobic coating in factory.The inorganic agent of most of factory applications is to be based on It is fluoropolymer-containing.The outer layer that durable waterproof agent is usually used in combination to prevent fabric with proofed breathable fabric such as Gore-Tex By water saturation.This saturation referred to as " prewetted " can reduce the gas permeability (by the moisture conveying of ventilated membrane) of clothes and allow Water penetrates.Method for factory application DWR processing is related to for example being applied to the solution of chemicals by spraying or impregnating On the surface of fabric.Recently, chemical process is applied in gas phase using chemical vapor deposition (CVD) mechanism.

This hydrophobic chemical handles permeable fiber and reduces the surface tension of fabric, forms pearl simultaneously so as to cause water It tumbles rather than is absorbed from the outer layer of fabric.DWR processing be not permanent: surface covering can by periodically wearing, cruelly It is exposed to dirt, detergent, pest repellant and outer fabric is caused to absorb water and the other impurities degraded.Over time with DWR And disappear, it is proposed that handle again if necessary.Due to fluoropolymer when being exposed to water and chemicals over time and It decomposes, therefore certain form of fabric needs are reprocessed repeatedly to maintain waterproofness.As clothes are by water saturation, due to having absorbed Water prevent water vapour (sweat) to be transferred to outside clothes inside clothes to form not only tide but also wet environment in inner, Therefore gas permeability reduces.Having another disadvantage that the fabric product of saturation attracts dirt particles, this plugs the stomata in waterproof membrane, from And reduce the gas permeability even after clothes have been dried.

Impacted clothes can be handled using " sprinkling " or " wash-in " to improve waterproofness.Heat treatment can reactivate The water-proof finish of factory application and facilitate repel water and other liquid it is such as oily.

In EP2622120, a kind of method for controlling drying machine is provided, this method includes selecting and starting open air Drying textile program and subsequently into warm-up phase, primary drying phase and cooling stage.It is dry in primary drying phase The operating temperature of machine is lower than the operating temperature of normal drying program, and after cooling stage, the outdoor textile of load Nominal water content is higher than the nominal water content after executing normal drying program.By setting suitable dry operating temperature, The damage of the material and sealing strip of the external textile seam crossing in family during drying program is prevented to the maximum extent.In addition, After drying program terminates, the nominal water content of outdoor textile is higher than other textiles after executing normal drying program Nominal water content, which ensure that outdoor textile will not occur by over-drying caused gauffer, and at the same time preventing open air The material and sealing strip of the seam crossing of textile are damaged.A kind of drying machine is additionally provided, which has to realize and be somebody's turn to do Method and the control unit programmed.

It --- is also referred to as protected again --- however, the published processing in drying machine is not provided for reactivating The best solution of outdoor clothes and textile.

Summary of the invention

The present invention relates to a kind of methods for controlling heat pump drier, wherein opposite " high temperature " is preferred." high temperature " It is meant that opposite, that is to say, that method of the invention is preferably and not necessarily to need " to be higher than during drying cycles It is used when standard " temperature.As an example, method of the invention can be used to reactivate when providing outdoor drying cycles The fire resistance characteristic of the outdoor textile of (or " protecting again ") such as open air clothes and outdoor wear etc.

Applicant has indeed been found that, in order to make to be surface-treated " reactivating ", outdoor textile needs to have relatively The drying cycles of high temperature and low humidity or drying cycles stage, such as temperature is higher than 55 DEG C and humidity is lower than 5%.

Other drying programs may need the temperature usually above the normal temperature used in heat pump drier.

Therefore, it is necessary to the methods that one kind can safely reach relatively high temperature in heat pump drier.

According to one aspect, the present invention relates to a kind of method for operating garment drying apparatus, which includes:

Process chamber, clothing are introduced into the process chamber and are handled by process air it；

There is refrigerant can return in the refrigerant circuit wherein flowed, the refrigerant for heat pump system, the heat pump system Second heat exchanger that road, which includes refrigerant, to be heated wherein in wherein cooled first heat exchanger, refrigerant, to system Refrigerant pressurization and make refrigerant circulation pass through refrigerant circuit compressor and dropping equipment；The first heat exchanger and/ Or the second heat exchanger process gas easy to carry out and between the refrigerant flowed in the refrigerant circuit Heat exchange.

Selector selects to the being suitable for replacement for property of selector a drying program in multiple drying programs, each drying Program includes primary drying phase；

The described method includes:

Setting indicates the first Limit temperature value of the limiting temperature of compressor；

Setting indicates the second Limit temperature value of the limiting temperature of compressor；

A drying program is selected among multiple drying programs and starts the drying stage of the drying program；

Sensing indicates the operating parameter of the humidity of the clothing in process chamber；

Measurement indicates the temperature value of the temperature of the compressor；

For indicate during drying stage first group of multiple value of the operating parameter of the humidity of clothing sensed and Select the first Limit temperature value；

For indicate during drying stage second group of multiple value of the operating parameter of the humidity of clothing sensed and Select the second Limit temperature value；And

It is higher than the first Limit temperature value or the second Limit temperature value in measured temperature value --- this is depended in institute The temperature value measured overstep the extreme limit temperature value when which Limit temperature value selected --- in the case where, to limit to the pressure The power supply of contracting machine disconnects the compressor.

Preferably, clothesdrier of the invention or equipment can be clothesdrier or washing dryer.

Heat pump laundry dryer includes the rotatable process chamber of such as roller, wherein the clothing of such as clothes is to be cleaned And/or the load of other dry articles is placed in the rotatable process chamber.Clothing is made of given textile.Processing Room is suitable in one direction and along the opposite direction rotation for keeping its direction of rotation reversed and for example by the horse of such as variable speed driver Up to driving, to adjust the rotation speed of process chamber.

Process chamber is a part of process loop, and specifically, which is in such as condensation dryer Closed-circuit air circuit is free-air circuit in ventilating drier, and process loop includes in both cases Air conduit, the air conduit are used for the stream of bootup process air so that load to be dried.Process air circuit by its two A opposite end is connected to roller.For example, hot dehumidified air is supplied in roller to flow through in drying machine Clothing, and generated moist cold air leaves roller.Then, the moist airflow that will be enriched in vapor is supplied to heat pump In evaporator, in evaporator, damp and hot process air is cooled and is present in the condensation of the moisture in evaporator.Then, institute Generate cold dehumidified air otherwise be discharged in environment locating for the equipment of device external or continue in closed loop Advance.In this second situation, then, the dehumidified air in process air circuit is before being again introduced into roller by means of heat The condenser of pump is heated, and entire circulating repetition carries out until drying cycles terminate.Alternatively, surrounding air passes through Entered roller from environment by entry conductor and is heated before entering roller by the condenser of heat pump.Process air is by means of process Air fan --- variable speed fan for example driven by motor --- is preferably blown into process air circuit.Preferably, The motor of fan and the motor of process chamber are same motors.In washer-dryer, it is known in the art different Circuit.

The heat pump of drying machine includes refrigerant circuit, wherein refrigerator can flow in the refrigerant circuit, and should Refrigerant circuit connects first heat exchanger or condenser, second heat exchanger or evaporator, compressor and decompression via pipeline Device.Refrigerant is pressurizeed and is circulated through system by compressor.In the waste side of compressor, high temperature and high pressure steam is referred to as cold It is cooled until the steam is condensed into the liquid of high pressure, moderate temperature in the first heat exchanger of condenser, thus in process Air heats process air before being introduced into hothouse.Then, the refrigerant of condensation passes through such as expansion device Dropping equipment such as choker (choke), air throttle or capillary.Then, low pressure liquid refrigerant enters second heat exchanger That is evaporator, in the second heat exchanger, fluid is absorbed due to carrying out heat exchange with the Warming processes air for leaving roller Heat is simultaneously evaporated.Then, refrigerant returns to compressor and repetitive cycling.

In order to compress refrigerant, compressor preferably includes electric motor, the electric motor usually by electric current for example from The electric current of power main is powered.

Drying machine of the invention preferably includes selector, such as the selector that can be operated by user, passes through the choosing Selecting device can alternatively be selected from multiple drying cycles.Drying machine generally includes respectively to be designed to processing by specific weaving Multiple drying cycles of clothing made of category type or composition, such as: for the cotton circulation at a high temperature of cotton-based textiles；Forever Long property pressing, permanent pressing are often referred to coloured apparel and utilize medium heat；Knitting/soft circulation, is used for unbearable The very close-weave product of high heat；Soft circulation is come leniently and slowly to dry rapid wear using the air of a little higher than room temperature Bad clothes etc..Therefore, it selects to recycle generally according to the type of textile to be dried.It can selected by the selector of drying machine Among the circulation selected, drying machine of the invention includes outdoor circulation with suitably dry outdoor textile and at least partly weighs The new waterproof and/or fire resistance characteristic for activating outdoor textile.

It is different there may be many different types of drying cycles or there is only two in drying machine of the invention Circulation.

Each circulation can be different from other circulations by multiple and different settings, and different settings are for example are as follows: in roller Internal flow is to dry the rotation of the temperature of the process air of textile, the duration of circulation, the rotation speed of roller, roller The humidity etc. of the change number in direction, textile when being considered dry and loop termination.It is all these to set and be used for The corresponding program line of each circulation is included in the memory of such as drying machine, such as is included in the main control of drying machine In device circuit.It in addition, each circulation is although preferably invisible to user, but still may include one for heat pump operation Or more setting.

Each drying cycles include primary drying phase, which is to the clothing and/or spinning being introduced into roller The stage that fabric is dried.Each circulation may further include the cooling rank after other stages, such as primary drying phase Section, in cooling stage, clothing is cooled before user can be close to them.In cooling stage, textile is in trunk The temperature reached in dry circulation is lowered.In addition, one or more drying cycles in drying cycles may include preheating In the stage, in pre-heat phase, the roller and other component of drying machine are heated to warm up machinery so that machine reaches best temperature Degree is to start primary drying phase.

The selection of cloth drying circulation or program by means of mechanical switch or can for example can revolve in any possible manner Rotate button, every circulation primary is carried out by means of button, by means of touch screen etc..In addition, selection can by user manually, It the modes such as automatically carries out by means of remote controler or by means of wireless command signal, due to preset timer to hold Row.

The selection of circulation preferably depends on the type of clothes, clothes, textile for putting into roller etc..

Once performing drying cycles selection, then drying cycles start.

In heat pump laundry dryer, clothing is dried at relatively low temperature, such as the spinning being present in roller The temperature of fabric is typically not greater than 50 DEG C -55 DEG C.According to the method for the present invention, in order to make textile in roller temperature increase example Such as it is higher than 50 DEG C, monitors the temperature of compressor.

It is known in the art that if worked in temperature values, the compressor of heat pump --- such as deposit It is the compressor of the heat pump in clothes washing and/or drying equipment --- it can work under safety condition.These values may Given curve is followed, this depends on the type of compressor.Each compressor has its distinctive specific curves to define its own Area of safety operaton, this depend on compressor itself characteristic.

In embodiments, in order to work under safety condition, compressor should not be overheated, that is to say, that there are work The region of condition, the operating condition is the function of the absorption electric current of the temperature of compressor and the motor of compressor, in the work In the area of condition, compressor can work in the case where no overheat.For the area of the safe working conditions of compressor It is usually defined by compressor curve in domain.

It is therefore preferred that higher than " limiting temperature " is somebody's turn to do, compressor is preferably not in the presence of " limiting temperature " It is allowed to work.The limiting temperature is likely to be dependent on several parameters and depends not only on the type of compressor.For example, the limit temperature Degree can depend on the environment temperature around clothing.

Preferably, for example, the limiting temperature of compressor is sensed from anywhere in refrigerant circuit.

In general, there is also " excessively safety " regions around range of safety operation, that is to say, that in order to improve safety, Temperature more lower than the temperature or electric current of the boundary of practical range of safety operation or lower electric current are considered as compressor Limiting temperature, in the case where being higher than the limiting temperature, compressor, which is preferably disconnected or should limit, is supplied to compressor Electric power.

In order to work in the safety zone of compressor always, safety precaution can be taken in clothesdrier. For example, the requirement to work in this security domain or working region usually guarantees by the way that there are passive switch, the passive switch The power supply to heat pump compressor is interrupted when being more than predetermined threshold (or voltage loads) of heat or electric current.Passive switch --- Referred to as OLP --- when the threshold temperature of heat pump compressor reaches or when being reached by the power termination or electric current of passive switch It opens, this is because in this case, high current also results in bimetal release and overheats and reach switching temperature.

Alternatively or other than OLP, limiting temperature can be set by software, that is to say, that once compression The temperature of machine reaches given limiting value, and compressor is not just allowed to work.

Alternatively or additionally, limiting temperature is referred to another variable to set.For example, limiting temperature can depend on The temperature when fan of cooling compressor starts to blow.

There may also be two kinds of temperature of OLP limiting temperature and software limit temperature, for example, for higher safety margin, Software limit temperature is for example likely lower than OLP temperature.

The limiting temperature of compressor can also be set with other methods.

If reaching the limiting temperature, the limiting temperature either set in which way, compressor or disconnection are wanted Limitation supply for example limits the electric current of supply to compressor motor to the electric power of compressor.For example, electric power can be lowered or Person interrupts a period.

According to the present invention, in any manner known in the art for example according to an embodiment in above embodiment To set the first limiting temperature and the second limiting temperature.

Preferably, the first limiting temperature is different from the second limiting temperature.

Difference between first limiting temperature and the second limiting temperature can depend on circulation, that is to say, that the difference can basis Selected drying cycles or program and change.In addition, the difference can depend on the type of compressor, the type of drying machine, to Amount, external temperature, conductivity values (such as by user's setting) of water of dry clothing etc..

In addition, the value of the value of the first limiting temperature and the second limiting temperature can also be depended on above with reference to the first limit temperature The variable that difference between degree and the second limiting temperature is listed.

Only as an example, in all drying cycles, the temperature of drying machine or equipment when drying cycles start is sensed. This temperature is the temperature around machine, that is to say, that this temperature is " environment " temperature.First limiting temperature and second limit Temperature can change according to this initial temperature of drying machine.For example, the temperature when fan of cooling compressor being selected to be activated Degree is plus given constant as the first limiting temperature or the second limiting temperature.Therefore, in embodiments:

T_{First or second limiting temperature}=T_{Compressor fan activation}+5℃。

Selected steady temperature not only can be 5 DEG C, but also can be any other temperature, and the steady temperature It can be changed according to selected drying cycles.

Hereinafter, it for different drying cycles, gives as exemplary first Limit temperature value:

Cotton circulation:

If temperature when circulation starts is " cold " or room temperature, that is, if temperature is less than or equal to 27 DEG C, T_{First limiting temperature}=95 DEG C.

If temperature when circulation starts is " warm ", that is, if temperature is higher than 27 DEG C, T_{First limiting temperature}=90 DEG C.

Woolen knitwear circulation:

If temperature when circulation starts is " cold " or room temperature, that is, if temperature is less than or equal to 27 DEG C, T_{First limiting temperature}=85 DEG C.

If temperature when circulation starts is " warm ", that is, if temperature is higher than 27 DEG C, T_{First limiting temperature}=75 DEG C.

Outdoor circulation:

If temperature when circulation starts is " cold " or room temperature, that is, if temperature is less than or equal to 27 DEG C, T_{First limiting temperature}=100 DEG C.

In all above-mentioned examples, the second limiting temperature is set higher than the first limiting temperature (T_{First limiting temperature}).For example, the Two limiting temperatures are set equal to

T_{Second limiting temperature}=2 DEG C of+T_{First limiting temperature}；

Or

T_{Second limiting temperature}=5 DEG C of+T_{First limiting temperature}；

Or

T_{Second limiting temperature}=10 DEG C of+T_{First limiting temperature.}

Most preferably,

T_{Second limiting temperature}=5 DEG C of+T_{First limiting temperature}。

First temperature is suitable for the first state of clothesdrier, and second temperature is suitable for the second shape of clothesdrier State.

First state and the second state are defined by the humidity value of clothing.That is, the humidity when clothing has between the When value in one group of humidity value, the first limiting temperature is selected, that is, the first limiting temperature is applicable in.Similarly, when the humidity of clothing has When having the value in second group of humidity value, the second limiting temperature is selected.

Preferably, it is different group for first group and second group, that is to say, that first group and second group is not overlapped.Therefore, such as The humidity of fruit clothing belongs to first group, then selects the first limiting temperature, if the humidity of clothing belongs to second group, selects second Limiting temperature.

It is therefore clear that the humidity due to clothing changes during circulation, limiting temperature is during drying cycles It may change.When drying cycles start, the humidity of clothing is relatively high, and for drying cycles at the end of, drying cycles it is wet It spends relatively low.Therefore, for the certain period of time of drying cycles, the limiting temperature of setting can be the first limiting temperature, And for another period, the limiting temperature of the compressor of setting can be the second limiting temperature.

In multiple programs, it is understood that there may be the constant drying program of compressor limiting temperature, that is, regardless of humidity value, Compressor limiting temperature remains identical, for example, compressor limiting temperature is equal to the first limiting temperature or the second limiting temperature. However, the change of the limiting temperature of compressor occurs in a program at least in multiple programs.

According to the present invention, two values are monitored during drying cycles.First value is related with the humidity of clothing.Clothing it is wet Degree can sense in a number of different ways.Any of method or sensor can be used.In these methods or sensor Each output depend on the humidity of clothing and can be converted the value of humidity value.The humidity value can be successive value, also It is to say, which can be " simulation " value or step values, to only allow multiple values.

In addition, also monitoring the temperature of compressor.Also in this case, the temperature for monitoring compressor can be used Any method or sensor.

The limiting temperature of compressor is selected according to the output of humidity sensor.Therefore, any during drying cycles It can choose the first limiting value or the second limiting value of the temperature of compressor at time point.

The temperature of compressor is monitored preferably during entire drying cycles.Detection indicates the value quilt of the temperature.If This temperature is excessively high, that is to say, that when having selected the first limiting value, if this temperature is higher than the first limiting value, Huo Zhe When having selected the second limiting value, if this temperature is higher than the second limiting value, or compressor or limitation supply are disconnected To the electric power of compressor.For example, electric power reduces.

Wherein, decision is to reduce electric power or completely cut through electric power to choose whether depending on predetermined safety zone Suitable for compressor, this means the selection of the limiting temperature for compressor in turn.In such as limiting temperature and compressor In the case that the actual boundary of security function is consistent, when being more than such safety zone, electric power confession is preferably completely cut through Answer (that is, disconnecting compressor).It alternatively, may not yet be more than actual safety overstepping the extreme limit temperature although measured value In the case where region, due to before reaching the actual boundary of safety zone of compressor there are " buffer area " of safety zone, Therefore it can reduce the electric power to compressor.

In addition, if the temperature of compressor keeps below the first limiting temperature or the second limiting temperature, it is selected dry Dry circulation continues according to program.

In this way it is possible to the limiting temperature during changing drying cycles.The variation depends on the humidity value of clothing.

Wherein, this variation potentially contributes to increase the temperature in roller.Water in textile outdoor first is preferably It is evaporated so that can be used for improving the temperature of clothing by means of heat provided by heated process air and not only use In the case that evaporation is contained in water therein, then the raising of drums inside temperature may be implemented.It is known that the latent heat phase of water To higher, and substantial temperature only can just occur at the end of the phase transformation from liquid to steam is preferably basic and increase.

It is therefore preferred that limiting temperature for example changes from lower first limiting temperature to higher second limiting temperature When, the humidity of clothing should be relatively low.

Preferably, according to above-mentioned aspect, in combination or alternatively, the present invention includes one or more in following characteristics A feature.

Preferably, in the case where measured temperature value is higher than the first Limit temperature value or the second Limit temperature value, The step of limiting the power supply to the compressor or disconnecting the compressor includes: any situation in following situations The power supply to the compressor is limited in the case where generation or disconnects the compressor:

Measured temperature is kept above the first Limit temperature value or the period of the second Limit temperature value is longer than the time Threshold value；

It is more than number that measured temperature, which meets or exceeds the first Limit temperature value or the number of the second Limit temperature value, Threshold value；

Difference between measured temperature and the first Limit temperature value or the second Limit temperature value is more than temperature difference threshold value.

Preferably, it has been retrieved in the first data that the temperature value of compressor is higher than the first limiting value or the second limiting value Compressor will not be disconnected immediately later, or electric power will not be limited immediately.In fact, accidental high temperature values may be due to measurement Error or temporal event and caused by.Therefore, disconnection or electric power can just only occur when detecting the overtemperature of " rationally correct " Limitation.If temperature be higher than limiting temperature one give " length " period, or if temperature higher than limiting temperature several times, or It is limited if a possibility that mistake considerably beyond limiting temperature, occurs in the measured temperature of person.The group of above situation Conjunction also can be used.

Preferably, sensing indicates that the operating parameter of the humidity of the clothing in process chamber includes one or more in following items :

The conductivity of the indoor clothing of sense process；

The capacity of volume of the sensing comprising clothing；

Measurement indicates the value of the torque for the motor for rotating process chamber；

The temperature of the process air of process chamber is left in measurement；

Measurement enters the temperature of the process air of process chamber and leaves the temperature difference between the temperature of the process air of room.

Be present in the clothing of drums inside humidity can be used in multiple and different sensors one (or more) pass Sensor detects.The combination of the signal provided by different sensors is also provided.The signal can be direct moisture signal, Such as the letter of the sensor measured from the resistance to the clothing contacted with one or more electrodes being located in roller Number.Higher degree of drying corresponds to higher resistance.Alternatively or additionally, in the mistake of the inlet of roller or exit The temperature of journey air can indicate the degree of drying of clothing.In addition, the temperature of process air can also be handed in a heat of heat pump The exit of parallel operation measures.The temperature of refrigerant also can indicate that the humidity of the clothing in roller.In addition, condensed water is collected in measurement Container in water level or the time gradient of water level that removes from container of measurement can also indicate that whether clothing is dried: if Such as water level at a given time period in do not increase, then reasonably mean that no more water need the textile from roller Middle removal and therefore textile are substantially dry.It will be from the water-driven that removes in the textile in roller be contained in appearance The activation number of the pump of device can also indicate the laundry humidity state in roller.In addition, one or more electricity of drum motor Parameter --- power such as example absorbed --- can also indicate that the humidity level of textile.Textile is contained in it in the water capacity It is heavier when middle and becomes relatively light after drying machine is dry.

Preferably, the compressor includes shell and oil in the oil circuit wherein flowed, and wherein, and measurement indicates the pressure The temperature value of the temperature of contracting machine includes one or more of following items:

Measure the temperature of the compressor housing；

Measure the temperature of refrigerant；

Measure the temperature of oil.

It is also possible for measuring the several method of compressor temperature.It can carry out " direct " measurement, such as measurement compressor Shell temperature.It can more indirectly be measured, to measure the temperature and/or refrigeration of the oil in oil or coolant conduits The temperature of the temperature of agent, compressor can be estimated from the temperature of oily temperature and/or refrigerant.

Preferably, the first Limit temperature value of selection includes selecting the first pole when the humidity of clothing is lower than the first humidity threshold Limit temperature value.Preferably, the second Limit temperature value of selection includes selecting second when the humidity of clothing is higher than the second humidity threshold Limit temperature value.It is highly preferred that first humidity threshold is equal to the second humidity threshold.Therefore, according to embodiment, work as clothing Humidity be lower than specific threshold when, select the first limiting temperature.That is, selecting first limit for " dry " clothing Temperature.On the other hand, for " wet " clothing, that is, for being higher than the humidity of another threshold value or same threshold, Select the second limiting temperature.

Preferably, the first limiting temperature is higher than the second limiting temperature.Therefore, when clothing is relatively dry, allow to increase The limiting temperature of compressor, so as to reach higher temperature in roller.

Preferably, this method includes the steps that setting the first humidity threshold or the second humidity threshold, the first humidity threshold or The setting of second humidity threshold is based on one or more of following items:

Selected drying program；

The weight of clothing；

Clothes fabric type or composition；

The duration of selected drying program；

It supplies to the electrical parameter for the motor for rotating process chamber.

First humidity threshold or the second humidity threshold can depend on multiple parameters.Therefore, the first humidity threshold or second Humidity threshold can also be different according to selected drying program.In fact, according to the weight or type of textile, it is more dry Or wetter clothing is likely to be breached high temperature.In addition, the clothing of " very dry " possibly can not be obtained in short drying program Object, and therefore humidity threshold may be higher.

Preferably, the humidity value of the first humidity threshold or the second humidity threshold instruction clothing is about 1% or lower.More preferably Ground, by the first limiting temperature rather than this threshold value (that is, humidity is lower than 1%) is used for clothesdrier, and for wetter clothing For object, i.e., for there is the clothing higher than the humidity of the threshold value, use the second limiting temperature.

Preferably, this method comprises:

Sense the environment temperature outside the garment drying apparatus；And

Wherein, the first Limit temperature value or the second Limit temperature value are the functions of the environment temperature.

Environment temperature may will affect the function of heat pump.In fact, under the external condition of heat, compressor slightly mistake Heat and it is more difficult to keep the compressor cooling.Therefore, the limiting temperature under for example hot external temperature is likely lower than standard Under the conditions of or cold external condition under limiting temperature.

Preferably, the laundry facilities includes fan, which is suitable for towards the compressor blowing air to pressure Contracting machine is cooled down, and wherein, for indicating the of the operating parameter of laundry humidity sensed during drying stage One group of multiple value selects the first Limit temperature value or for the operation sensed for indicating the laundry humidity during drying stage It includes selecting the first temperature threshold or second temperature threshold value respectively that the multiple values of second group of parameter, which select the second Limit temperature value, the One temperature threshold or second temperature threshold value are respectively configured to

Start and/or deactivate the fan；

Modify the air-flow supplied by the fan.

Cooling fan unit or blower unit can be arranged close to compressor, to be from compressor during drying process Heat is removed from heat pump system.In embodiments, as the cooling air stream of surrounding air stream by cooling fan unit active Ground drives and obtains heat from compressor.Fan unit includes air blower or fan, and the air blower or fan are for example by fan horse Up to driving, which is controlled by the control unit of drying machine.By transmitting the heat from compressor, run in heat pump system Stable state during, realize the thermodynamical equilibrium between process air circuit and the closed loop of refrigerant circuit.Therefore, quilt Compressor is consumed and is removed from heat pump system not over the electric power that compression refrigerant is transformed into operation power, that is, compression The thermal power of machine is balanced in the closed loop of refrigerant and the closed loop of process air in the ideal case.It means that in heat pump Under the stable state of system, wherein maximum service condition or efficiency or almost maximum service condition or efficiency are in warm-up phase It is achieved later, the heat deposited in refrigerant circuit by compressor is cooled fan unit balance to prevent from overheating.

When reaching the given temperature of compressor, the fan of compressor starts to blow air.In the preferred embodiment, it selects Second limiting temperature of the first limiting temperature and compressor of selecting compressor further includes that selection fan starts to blow sky to compressor The first temperature and second temperature of gas (or stopping blowing air to compressor).Alternatively, the first temperature and be can choose Two temperature, wherein fan change at the first temperature and second temperature supplied to compressor air-flow (for example, provide it is more or Less air).Therefore, the fan of the activation/deactivation temperature of fan or compressor change air-flow temperature can with according to whether It has selected for the first limiting temperature or the second limiting temperature and changes.

Preferably, the multiple drying program includes outdoor drying program and at least additional drying program, the open air are dry Program has the outdoor textile of the waterproof breathable membrane material with microcellular structure for drying, and described at least additional dry Dry program is for drying other types textile, wherein outdoor drying program includes outdoor drying stage, the open air drying stage The setting of reversal frequency with the rotation for roller and setting for heat pump operation, and additional drying program includes attached Add drying stage, the setting of reversal frequency and setting for heat pump operation which has the rotation for roller It is fixed；And wherein:

It selects a drying program among multiple drying programs and starts the drying stage of the drying program to include selection Outdoor drying program；And

For a part of drying stage, make the frequency of the rotation reversion of process chamber in drying program outdoors Lower than the frequency for the rotation reversion for making process chamber in additional primary drying phase.

Therefore it includes the clothing of waterproof layer and/or impermeable layer or impermeable stratum that outdoor clothes or clothes are considered as those Clothes.Both impermeable stratum and waterproof layer can reside in same clothes.

Sufficiently high temperature is preferably realized in roller, that is, it has been found that the optimal temperature for " protection " Degree, that is, at least partly reactivating waterproof and/or waterproof layer the temperature of outdoor textile.For outdoors Reach relatively high temperature in one sub-stage, the preferably frequency by the rotation reversion for making roller is set to be lower than in additional master The frequency for inverting rotation in drying stage.

In fact, roller itself occurs to slow down and stop when the rotation of roller is inverted.Since process air fan is logical Chang Youyu drives the same motor driving of roller rotation, therefore the deceleration and interruption of these movements reduce and flow in roller Process air amount, to reduce temperature.For this reason, the number of reversion may will affect the spinning for being present in drums inside The temperature of fabric.Keep reversion number lower, it is, keeping reversion number additional dry lower than what is presented in clothesdrier The bulk temperature that reversion number in dry circulation can contribute to make to be contained in the outdoor textile in roller increases.

It is highly preferred that outdoor drying program includes the first dry sub-stage and the second dry sub-stage, in which:

In the second dry sub-stage, make the rotation of roller lower than the roller rotation operated in the first sub-stage outdoors The frequency of reversal frequency inverts；And

In the second dry sub-stage, the first limiting temperature of compressor is selected.

As mentioned, in heat pump laundry dryer, clothing at relatively low temperature, is for example being present in roller In the temperature of textile be typically not greater than at 50 DEG C -55 DEG C and dried.According to the method for the present invention, in order to by the temperature of textile Degree is increased to have been found be optimal temperature for " protection ", that is to say, that in order at least partly reactivate family The waterproof and/or waterproof layer of outer textile, firstly, the water in outdoor textile is preferably evaporated, so that by means of having added The heat that the process air of heat provides can be used for increasing the temperature of outdoor textile and being not only used for evaporation and accommodate wherein Water.It is known that the latent heat of water it is relatively high and and if only if phase transformation from liquid to steam is preferably basic at the end of just can Substantial temperature occurs to increase.

Therefore, outdoor first sub-stage is outdoor textile to be dried until reaching the rank of the first threshold of humidity Section, starts " to protect " stage when humidity is under first threshold, i.e., outdoor second sub-stage.For the first sub-stage outdoors In reach relatively high temperature, the frequency of roller rotation reversion will preferably be set to be lower than in additional primary drying phase The frequency for inverting rotation.

Keep reversion number lower, that is, reversion number is kept to be lower than the additional drying circulation presented in clothesdrier In reversion number, can contribute to make to be contained in the outdoor textile in roller bulk temperature increase.

In addition, starting outdoor second sub-stage when the humidity in clothing is equal to or less than first threshold.Meanwhile it selecting First limiting temperature, wherein the threshold value for the second sub-stage to start is identical with the threshold value of the selection for the first limiting temperature.

In the second sub-stage, latent heat can be not only converted by the heat that process air introduces, but also can further rise The temperature of high textile itself.In order to reach the relatively high temperature for heat pump drier, that is, in order to which second is sub outdoors Reach preferably higher than 59 DEG C of temperature in stage, the air stream in roller will be by " limitation ", it is, working as and outdoor circulation Air stream present in first sub-stage is compared or when compared with the air stream present in the additional primary drying phase, air-flow subtracts It is few.The reduction of air-flow allows further to heat clothing existing for drums inside, is achieved in " the protection rank for outdoor wear Section ".

Preferably, the outdoor drying program includes the first dry sub-stage and the second dry sub-stage, and wherein:

Outdoors in the second dry sub-stage, keep the flow velocity of process air in the process chamber dry relative to outdoors first Flow velocity in sub-stage and increase relative to the flow velocity in the additional drying stage.

Comparison between multiple flow velocitys executes in entire sub-stage, that is, the one the second sub-stages of per time unit Mean flow rate should be with the mean flow rate of the first sub-stage of per time unit or adding in main drying cycles for per time unit Mean flow rate compare.In fact, in the first sub-stage or in additional drying circulation, there may be the following periods: In the period in the first sub-stage or in additional drying circulation flow velocity at this time be lower than in the second sub-stage it is another not Flow velocity in the same time, for example, when the fan in the first sub-stage or additional cycles is not rotated in the first sub-stage or attached Add the period that may be present in drying cycles.

Therefore, " mean value " divided by the duration in entire sub-stage should be compared.

Preferably, garment drying apparatus includes the overload protective device suitable for shutting off the electric power of the compressor, described Overload protective device limits trip temperature, and wherein, and setting indicates the first Limit temperature value of the limiting temperature of compressor or sets Fixed second limit temperature value includes the first Limit temperature value or the second limit temperature for the trip temperature for being set lower than overload protective device Angle value.

In embodiments, laundry facilities of the invention includes OLP.In the present invention, setting is preferably lower than OLP tripping The first temperature and second temperature of temperature prevent OLP from tripping, the reason is that, this method is even interrupted or limited before activating OLP System leads to the flowing of the electric current of compressor motor, that is to say, that once the temperature of compressor is higher than the first limiting temperature or second The flowing for leading to the electric current of compressor motor, both the first limiting temperature or the second limiting temperature are just interrupted or limited to limiting temperature The below trip temperature of OLP.In this way, compared with the OLP interruptive current the case where, compressor can be in a manner of quickly Cooling and restarting.In addition, the process and apparatus of the present invention serve as " dual safety in the case where laundry facilities includes OLP Property ", so that compressor still will not in the case where two component twin failures in the control circuit in laundry facilities occur It overheats and closes or have more limited electric power by OLP or controller of the invention.

On the other hand, in the absence of OLP, controller of the invention forces compressor always in scheduled area of safe operation It works in domain, this is because otherwise, when except such domain, the electric current for leading to compressor will be cut off or reduce.

It should be understood that being an embodiment in possible embodiment of the invention comprising OLP.The present invention Laundry facilities and/or operation according to the method for the present invention be also possible to " no OLP ", that is, controller of the invention allows OLP is removed from laundry facilities and at the same time guaranteeing identical security level.

Detailed description of the invention

Referring in detail to the preferred embodiment of the present invention, the example of the preferred embodiment is shown in the accompanying drawings, attached In figure:

Fig. 1 is the perspective view of drying machine according to the present invention,

Fig. 2 is the schematic outline of some components of the drying machine of Fig. 1,

Fig. 3 is to depict the block diagram of some components of drying machine of Fig. 1, the component to control unit provide signal and/ Or controlled unit control,

Fig. 4 is multiple songs of the time behavior of several parameters of drying machine of the invention during showing drying cycles outdoors Line chart,

Fig. 5 is the flow chart of method of the invention.

Embodiment

Fig. 1 shows the three-dimensional appearance of exemplary garment drying machine 2.In this embodiment, clothesdrier is only clothing Object drying machine, but in alternative embodiment, according to the drying machine function of control method by washer-dryer come It realizes, in washer-dryer, rotatable drum is arranged in bucket (tub) and the washer-dryer provides clearly Cleaning device, the cleaning device include (for example) cleaning agent distributor, the heater for being heated to cleaning solution and for arranging The discharge pump of liquid out.

As shown in fig. 1, clothesdrier 2 has external shell 4 or cabinet including antetheca 6.In addition, clothesdrier 2 include roller 16, and roller 16 is also referred to as process chamber, wherein clothing is located in roller to be dried.It is provided at antetheca 6 To enter roller 16, which is closed loading opening 8 by door 10.In discribed embodiment, clothesdrier is that have The front loading clothesdrier of horizontal cylinder rotation axis, but in alternative embodiment, roller can be relative to Horizontal direction and vertical direction inclination or drying machine can be the drying machine of vertical rotation axis, wherein roller is around vertical axis Line rotates and which provide top loadings.

Clothesdrier 2 has control panel 12 and condensate drawer 14, which is arranged in the top of antetheca 6 At region, and from drying process collect condensate be stored in the condensate drawer 14 until be easily removed by a user for Only.

In the schematic diagram of component shown in Fig. 2, roller 16 is arranged in the inside of shell 4, and clothing 18 is accepted in shell In body 4.The flowing of process dry air A is indicated by an arrow, wherein dry air A outlet 24 at leave roller 16 and Enter process air channel 20 at front channels 20c.By front channels 20c, process dry air is guided through villus mistake Filter element 26 and towards second heat exchanger 34 and first heat exchanger 32.First heat exchanger 32 and second heat exchanger 34 It is disposed in the cell channel 20a in process air channel 20.First heat exchanger 32 is heated to process dry air Condenser, and second heat exchanger 34 be process dry air is cooled down in the form of condensed water dehumidify evaporation Device.

The process dry air for leaving first heat exchanger 32 is going into rear channels 20b, the cloth in rear channels 20b It is equipped with drying process air fan 28, which transmits dry air.Process air fan 28 is by motor 30 drivings, motor 30 preferably drive the rotation of roller 16 simultaneously.However, it is also possible to which two different motors are arranged.By suitable Locality drives cylinder drive motor, and the rotation of roller 16 can carry out in one direction and or opposite It is carried out on direction, that is to say, that it is possible for inverting the rotation of roller in clothesdrier operation.In discribed implementation In mode, it is wrapped on jacket (mantel) by the belt that motor 30 drives with driving fan.In discribed embodiment In, wherein single-motor 30 drives process air fan 28 and roller 16, and roller and process air fan 28 are according to gear ratio It is driven in a synchronous manner.Preferably, the speed of roller and/or process air fan is adjustable.The synchronous rotary of roller Including the rotation forward and back rotation rotated forward according to motor and motor front and back rotates, so that the direction of rotation of roller can also To change backward or otherwise from changing into backward forward from changing into forward.As an example, since process air fan is arranged On the axis of motor 30, therefore fan speed is identical as motor speed, and via belt, the rotation of motor is by with motor rotation The exemplary ratios The gear deceleration of speed/drum rotation speed 50:1.

First heat exchanger 32 and second heat exchanger 34 are a part of heat pump system 44, and heat pump system 44 further includes swollen Swollen device 38 and compressor 36.Refrigerant circuit 40 is formed in heat pump system 44, wherein the refrigeration pumped by compressor 36 Agent passes through condenser 32 first and is transferred into expansion device 38, which is expanded to second heat exchanger 34 from expansion device 38 In and be inhaled into compressor 36 from second heat exchanger 34.It can will be from heat pump system by starting compressor cooling fan 42 It is removed in system hot (and the heat being deposited in the dry air and clothing for drying clothing), which mentions For from the outside of cabinet 4 towards the cooling air stream of the outer surface of compressor 36.Compressor cooling fan can star, that is, It says, compressor cooling fan for example can start to blow air to compressor in the case where being higher than given compressor temperature, and/or Person's compressor cooling fan can deactivate, that is to say, that compressor cooling fan can be for example lower than given compressor temperature Degree is lower to be stopped blowing air to compressor.In addition, can also be changed by the flow velocity of the mobile air of compressor cooling fan 42.? After compressor 36, it is discharged outside cabinet 4 by the cooling air that compressor cooling fan 42 blows.

At evaporator 34 formed condensate runs down and collect in condensate collector 48.Condensate is discharged Pump 50 is pumped across discharge conduit 52 from condensate collector 48 and enters in condensate drawer 14, as described above can be by making User removes condensate from condensate drawer 14.Preferably, condensate collector can be measured by means of liquid level sensor Water level in 48, and/or can also measure the water level removed from outdoor textile to be dried and wait collect when Between gradient.

It is one or more there may also be following in clothesdrier: to be arranged at the outlet 24 of roller 16 simultaneously Detect the temperature sensor of the outlet temperature To of dry air, such as thermocouple；It is arranged at the entrance 22 of roller 16 and detects Another temperature sensor of the inlet temperature Ti of dry air, such as thermocouple；The exit of condenser 32 and detection are set The temperature sensor of refrigerant temperature Tr at this location.In drums inside, there may also be electrodes, such as by means of electricity Resistance rate measures the humidity Hum for determining clothing when contacting electrode.In addition, environment temperature Tamb is also detected by additional sensor, The temperature of the external environment of environment temperature Tamb i.e. clothesdrier.

Fig. 3 is the block diagram of the component of drying machine 2, and the component interaction is so that control unit 60 can control dry behaviour Work or program.Control unit 60 has memory 62, and program parameter and look-up table are stored in the memory 62, so that control is single Member by from retrieved in memory 62 corresponding data can preferably as by user via be located at Selection Floater 12 Different substantially dry programs is controlled under conditions of option selectors setting.User can be in different program circular lists Option program circulation.Selection can be held by means of the selector (attached drawing is not shown and its own is standard) in panel 12 Row.The option that this user can set is for example are as follows: the type of drying cycles (cotton, soft, outdoor etc.), final dry Load capacity, the type of clothing, the duration of drying, energy of dry degree, the clothing for being loaded by user and being put by him/her Option etc..

It include outdoor circulation in these circulations, choosing when preferably textile is introduced into clothing 16 outdoors of outdoor circulation It selects.

Preferably, each circulation includes main drying stage and subsequent cooling stage.Alternatively it is also possible to include preheating Stage.

Referring now to Fig. 5, drying machine 2 is opened in step so) and by selector S1 in those selectable circulations Select drying cycles.

In any selected drying cycles, control unit 60 sends control signal to drum motor inverter 64 and can To receive operating parameter from drum motor inverter 64.Drum motor inverter 64 to roller 16 and dry air fan 28 into The motor 30 of row driving is powered.Control unit 60 can send control signal to compressor motor inverter 66 and can be from pressure Contracting machine motor inverter 66 receives operating parameter.Inverter 66 is for driving the compressor motor 67 of compressor 36 to power.This Outside, control unit 60 can control discharge pump 50, the motor 68 for being driven to compressor cooling air fan 42, and Optionally, if being provided with the individual motor 70 for dry air fan 28, control unit 60 can control dry sky Air fan motor 70.The specific of selected specific procedure (drying cycles) is depended on by the command signal that control unit 60 is sent Setting.

For example, can choose outdoor program.However, following procedure is suitable for any drying program.Furthermore, it is possible to there is pressure The program that the limiting temperature of contracting machine does not change with humidity.These programs are not described below.

The setting of the main drying cycles of selected program is stored in memory 62, and selected program can be with It is related to one or more of following items: reversal frequency, process or the drying of rotation of the roller 16 during main drying cycles The speed of air fan 28, the speed of roller 16, heat pump operation parameter.

In addition, detection environment temperature Tamb.

When program S2 starts, the fact that just beginning due to drying program, so the humidity of clothing is very high.Therefore, The humidity of clothing is higher than given threshold value.Therefore, the limiting temperature of compressor is set to, second pole equal with the second limiting temperature Limiting temperature is effective to " wet " clothing.Second limiting temperature is likely to be dependent on Tamb.For example, can be in control unit 60 The second limiting temperature is obtained in database in memory.

The value of second limit temperature option and/or Tamb further define temperature when compressor cooling fan 42 starts or is deactivated Degree is horizontal.When selecting the second limiting temperature, which is, for example, T1.Cooling fan 42 is opened according to the limiting temperature of compressor The value of temperature levels when dynamic or deactivated is also reside in the memory of control unit 60.

Selected drying cycles start S2 after parameter setting mentioned above.Preferably, during drying cycles, Control unit 60 is not only monitored from motor 30 or its inverter, compressor cooling fan 42, compressor motor inverter, process The signal of air fan 28 etc., it is also preferable that further signal of the monitoring from one or more sensors, for example, control Unit 60 processed can receive the signal from the sensor for refrigerant temperature Tr or the inlet temperature Ti for dry air Sensor signal or the outlet temperature To for dry air sensor signal or by roller 16 electrode produce Raw conductivity measures Hum or the water level in condensate collector 48 and/or from outdoor weaving to be dried and to be collected The time gradient of the water level removed in product can also be measured or the time gradient of the water level and condensate collector 48 The number of starts of draining pump 50 is related.

Control unit 60 starts outdoor primary drying phase.In some embodiments of the present invention, primary drying phase it It is preceding to may exist additional phase, such as outdoor warm-up phase.Outdoor primary drying phase is since outdoor first sub-stage, step S4.Therefore, control unit 60 sends command signal to drum motor inverter 64, so that the reversal frequency F1 of the rotation of roller 16 Reduce relative to the additional cycles in the memory 62 for being present in control unit 60.Preferably, frequency F1, which is lower than, is stored in storage And it can be by the frequency for any other circulation that selector selects in device 62.For example, frequency F1 is selected to be equal to 6 times per hour Reversion.

Furthermore, it is possible to execute one or more of following items.The horse of roller 16 is driven in the first sub-stage outdoors The revolutions per minute RPM1 reached can by means of from control unit 60 to the command signal that drum motor inverter 64 is sent and phase Revolutions per minute rpm in the primary drying phase for the additional drying circulation being present in washing machine is enhanced, to improve The flow velocity of process air in roller 16.For example, RPM1 can be about 2750rpm or 2900rpm.Alternatively or additionally, Control unit 60 can send command signal to dry air fan motor 70,30 so that dry air fan motor 70,30 Speed increases relative to the speed in additional drying selectable in selector circulation.Alternatively or additionally, control is single Member 60 can to compressor motor inverter 66 send command signal, so as to make compressor 36 motor 67 speed or electric power supply It should increase relative to the speed added in main drying cycles.

Then, first outdoor sub-stage is executed under above-mentioned setting.

Control unit 60 also monitors the signal from one or more sensors, such as control unit 60 can receive and The signal of the sensor of signal from the sensor for refrigerant temperature Tr or the inlet temperature T1 for dry air or The signal of the sensor of outlet temperature T0 for dry air or the conductivity measurement Hum carried out in roller 16 by electrode, Or the water level in condensate collector 48.Therefore, control unit 60 constantly checks the humidity level of clothing and by the wet of clothing Degree level is compared with threshold value.For example, threshold value can be such as less than 1% humidity.If humidity is lower than such threshold value S5, Then control unit control drying machine 2 enters the second sub-stage S6 of outdoor main drying cycles.If outdoor humidity not less than this One threshold value, then outdoor first sub-stage continues.

Outdoors in the second sub-stage step S6, therefore control unit 60 sends order letter to drum motor inverter 64 Number, so that the frequency F2 of the rotation reversion of roller 16 reduces relative to outdoor first sub-stage.Preferably, frequency F2 is lower than storage The frequency for any other program that can be selected by selector in device 62.For example, frequency F2 is selected as being equal to zero.

In second sub-stage, compressor limiting temperature also changes, and compressor limiting temperature is the now One limiting temperature, first limiting temperature are higher than the second limiting temperature present in the first sub-stage.

Alternatively or additionally, control unit 60 can send command signal to compressor motor for cooling fan 68, with Make temperature T1 when compressor 42 activation/deactivation of cooling fan relative in the additional drying circulation that can be selected by selector Temperature when compressor cooling fan is activated/deactivated increases.New temperature is known as T2, and temperature T2 is higher than T1.

One or more of following items can also be performed.It is sent out by means of control unit 60 to drum motor inverter 64 Command signal is sent, the revolutions per minute RPM2 for the motor that roller 16 is driven can be able to relative to outdoor first sub-stage Increase.This is particularly advantageous when roller 16 and fan 28 are driven by identical motor 30, the reason is that, the mistake in roller 16 The flow velocity of journey air is increased.For example, RPM may be about 3000rpm.Alternatively or additionally, control unit 60 can be with Signal is sent to dry air fan motor 70, so that the speed of dry air fan motor 70 is relative to outdoor first sub-stage In speed increase.Alternatively or additionally, control unit 60 can send signal to compressor motor inverter 66, so that Increase the motor speed in the first sub-stage outdoors of the speed or power supply of the motor of compressor 36 relative to compressor Or power supply increases.

In S7, the second sub-stage of outdoor primary drying phase is when sub-stage at least continue for predetermined continue outdoors Between t1set when terminate.It can be that constant there are the fixed value of t1set or the times i.e. in memory 62 period Section can change.For example, when the duration can be more than temperature threshold Tthr according to the outdoor textile in roller 16 when The area of a room adjusts, and temperature threshold Tthr is preferably about 59 DEG C.Therefore, in this embodiment, outdoor second sub-stage is Termination when have passed through duration t1set, wherein the temperature of t1set outdoor textile during depending on the second sub-stage is super Crossing Tthr will be how long.In this way it is assured that outdoor textile holding continues a shortest time at a desired temperature. Therefore, t1set continuous updating during the circulation, and only consider the temperature of textile outdoors higher than one during Tthr Part-time.Therefore, the second sub-stage terminates after it have passed through the t1set time, so that it is guaranteed that the temperature of textile is high outdoors Time long enough during Tthr is to reactivate the fire resistance characteristic of (or " protecting again ") outdoor textile.Alternatively, Sensing temperature how many time during the second outdoor sub-stage is lower than Tthr, and drops below given time of Tthr in temperature After number, the duration of the second sub-stage is adjusted, and is particularly extended.Alternatively, this t1set can be according to drying The environment temperature and/or pressure condition of 2 local environment of machine are joined to sense several environment when setting, such as recycling beginning outdoors Number, and selected in the look-up table or curve for example from t1set to the environmental condition in the memory 62 for being present in control unit 60 Select the corresponding fixed value of t1set.

After having already been through t1set, then outdoor second sub-stage is terminated, and then can begin to cool stage step Rapid S8, to be carried out to due to the outdoor textile for activating the stage (the second sub-stage) again and having reached comparative high temperature It is cooling.

Cooling stage is preferably continued above 10 minutes.

Then, drying cycles terminate S9.

Fig. 4 shows the time behavior of several parameters during outdoor circulation in drying machine 2 of the invention.In drying machine 2 In selected outdoor circulation.In Fig. 4, the segmentation between primary drying phase and cooling stage is depicted as distinguishing the dry rank of trunk First sub-stage of section and the first vertical line of the second sub-stage, and the differentiation between primary drying phase and cooling stage is also shown It is out another vertical line.In the graph, the behavior of curve over time is depicted only, to show whole curve shape, Used unit is arbitrary.

Discribed graphical representation following signals (from top to bottom):

The temperature (signal from thermocouple) of process air at drum inlet；

The temperature (signal from thermocouple) of process air at drum outlet；

Power supply (total amount) to drying machine；

The limiting temperature of compressor.

Increase from the constant temperature in the first sub-stage of in curve graph it can be clearly seen that open air, and open air second Temperature in sub-stage is substantially kept constant under high level.

From the first sub-stage to the second sub-stage, the limiting temperature of compressor changes.

Claims

1. a kind of method for operating garment drying apparatus (2), the garment drying apparatus (2) include:

Process chamber (16), clothing (18) be introduced into the process chamber (16) and with process air to the clothing at Reason；

Heat pump system (44), the heat pump system (44) have can for refrigerant in the refrigerant circuit (40) wherein flowed, The refrigerant circuit includes first heat exchanger (32), second heat exchanger (34), compressor (36) and dropping equipment (38), wherein the refrigerant is cooled in the first heat exchanger (32), and the refrigerant is in second heat exchange Device is heated in (34), and the compressor (36) pressurizes to the refrigerant and the refrigerant circulation is made to pass through the refrigerant Circuit, the first heat exchanger and/or the second heat exchanger are adapted for carrying out the process gas and in the refrigerants The heat exchange between the refrigerant flowed in circuit.

Selector selects to the being suitable for replacement for property of selector a drying program in multiple drying programs, each dry journey Sequence includes primary drying phase；

The described method includes:

Setting indicates the first Limit temperature value of the limiting temperature of the compressor (36)；

Setting indicates the second Limit temperature value of the limiting temperature of the compressor (36)；

A drying program is selected among the multiple drying program and starts the drying stage of the drying program；

Sensing indicates the operating parameter of the humidity of the clothing in the process chamber (16)；

Measurement indicates the temperature value of the temperature of the compressor (36)；

For indicating during the drying stage first group of the operating parameter of the humidity of the clothing (18) sensed Multiple values and select first Limit temperature value；

For indicating during the drying stage second group of the operating parameter of the humidity of the clothing (18) sensed Multiple values and select second Limit temperature value；And

In the case where measured temperature value is higher than first Limit temperature value or second Limit temperature value, limitation Power supply or the disconnection compressor (36) to the compressor (36), wherein be higher than institute in measured temperature value State the electric power limited in the case that the first Limit temperature value is also above second Limit temperature value to the compressor (36) The compressor (36) are supplied or disconnected depending on selected when measured temperature value is more than the Limit temperature value It is first Limit temperature value or second Limit temperature value and carries out.

2. according to the method described in claim 1, wherein, measured temperature value be higher than first Limit temperature value or The power supply to the compressor (36) is limited in the case where second Limit temperature value or disconnects the compressor (36) The step of include being limited in the case where any one of following situations happens to the power supply of the compressor or disconnected Open the compressor:

Measured temperature is kept above first Limit temperature value or the period of second Limit temperature value is longer than Time threshold；

Measured temperature meets or exceeds first Limit temperature value or the number of second Limit temperature value is more than Frequency threshold value；

Difference between measured temperature and first Limit temperature value or second Limit temperature value is more than temperature difference Threshold value.

3. method according to claim 1 or 2, wherein sensing indicates the clothing (18) in the process chamber (16) The operating parameter of humidity include one or more of following items:

Sense the conductivity of the clothing in the process chamber (16)；

Sensing includes the capacity of the clothing (18) volume；

Measurement indicates the value of the torque for the motor for rotating the process chamber (16)；

The temperature of the process air of the process chamber (16) is left in measurement；

Measurement enter the process chamber process air temperature with leave the process chamber (16) process air temperature it Between temperature difference.

4. the method according to any one of the preceding claims, wherein the compressor (36) includes shell and fuel feeding In the oil circuit wherein flowed, and wherein, measurement indicates that the temperature value of the temperature of the compressor (36) includes in following items It is one or more:

Measure the temperature of the compressor housing；

Measure the temperature of the refrigerant；

Measure the temperature of the oil.

5. the method according to any one of the preceding claims, wherein selection first Limit temperature value is included in The humidity of the clothing selects first Limit temperature value when being lower than the first humidity threshold.

6. the method according to any one of the preceding claims, wherein selection second Limit temperature value is included in The humidity of the clothing (18) selects second Limit temperature value when being higher than the second humidity threshold.

7. according to method described in claim 5 and 6, wherein first humidity threshold is equal to second humidity threshold.

8. the method according to any one of claim 5 to 7, the method includes set first humidity threshold or The step of second humidity threshold, the setting of first humidity threshold or second humidity threshold is based in following items It is one or more:

Selected drying program；

The weight of the clothing (18)；

Clothes fabric type or composition；

The duration of selected drying program；

It supplies to the electrical parameter for the motor for rotating the process chamber (16).

9. the method according to any one of the preceding claims, wherein first humidity threshold is described second wet Degree threshold value is designated as the humidity value of the about 1% or smaller clothing.

10. the method according to any one of the preceding claims, which comprises

Sense the external environment temperature of the garment drying apparatus (2)；And

Wherein, first Limit temperature value or second Limit temperature value are the functions of the environment temperature.

11. the method according to any one of the preceding claims, wherein the garment drying apparatus (2) includes fan (42), the fan (42) is suitable for blowing air towards the compressor (36) to cool down the compressor (36), and And wherein, for first group of multiple value of the operating parameter of the humidity for indicating the clothing described in the drying stage sensed And select first Limit temperature value or the behaviour sensed for the humidity for indicating the clothing described in the drying stage Make second group of multiple value of parameter and select second Limit temperature value to include selecting the first temperature threshold or the second temperature respectively Threshold value is spent, first temperature threshold or the second temperature threshold value are arranged for

Start and/or deactivates the fan (42)；

Modify the air-flow supplied by the fan (42).

12. the method according to any one of the preceding claims, wherein the multiple drying program includes outdoor dry Program and at least an additional drying program, the open air drying program have the waterproof breathable membrane with microcellular structure for dry The outdoor textile of material, and an at least additional drying program is for drying other types of textile, wherein it is described Outdoor drying program includes outdoor drying stage, and the open air drying stage has the reversal frequency of the rotation for the roller Setting and setting for the heat pump operation, and the additional drying program includes the additional drying stage, described additional Drying stage has the setting of the reversal frequency of the rotation for the roller and the setting for the heat pump operation, and its In:

Among the multiple drying program select a drying program and the drying program drying stage include choosing Select the outdoor drying program；And

For a part of the drying stage, keep the rotation of the process chamber anti-in the outdoor drying program The frequency turned is lower than the frequency for making the rotation reversion of the process chamber in additional primary drying phase.

13. according to the method for claim 12, wherein the open air drying program includes the first dry sub-stage and second Dry sub-stage, comprising:

In the described second dry sub-stage, make the rotation of the roller with lower than operating in outdoor first sub-stage Frequency (F2) reversion of roller rotation reversal frequency (F1)；And

In the described second dry sub-stage, first limiting temperature of the compressor (36) is selected.

14. method according to claim 12 or 13, wherein the open air drying program include the first dry sub-stage and Second dry sub-stage, and include:

In the described outdoor second dry sub-stage, make flow velocity of the process air in the process chamber relative to described It dries the flow velocity in sub-stage and increases relative to the flow velocity in the additional drying stage in open air first.

15. the method according to any one of the preceding claims, wherein the garment drying apparatus (2) includes being suitable for The overload protective device to the electric power of the compressor is cut off, the overload protective device limits trip temperature, and wherein, sets table Show the first Limit temperature value of the limiting temperature of the compressor or the second Limit temperature value includes being set lower than the mistake Carry the first Limit temperature value or the second Limit temperature value of the trip temperature of protector.

16. a kind of garment drying apparatus (2), the garment drying apparatus (2), which has, to be programmed to for implementing to be wanted according to right The control unit (60) of method described in asking any one of 1 to 15.