CN104583483B - A laundry or tableware treating machine - Google Patents

A laundry or tableware treating machine Download PDF

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Publication number
CN104583483B
CN104583483B CN201380034035.0A CN201380034035A CN104583483B CN 104583483 B CN104583483 B CN 104583483B CN 201380034035 A CN201380034035 A CN 201380034035A CN 104583483 B CN104583483 B CN 104583483B
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CN
China
Prior art keywords
compressor
circuit
thermal protector
control unit
temperature
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Active
Application number
CN201380034035.0A
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Chinese (zh)
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CN104583483A (en
Inventor
罗伯托·拉戈尼亚
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Electrolux Home Products Corp NV
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Electrolux Home Products Corp NV
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Publication of CN104583483A publication Critical patent/CN104583483A/en
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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/20General details of domestic laundry dryers 
    • D06F58/206Heat pump arrangements
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2101/00User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/44Current or voltage
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50Parameters 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/26Heat pumps
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08Control circuits or arrangements thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry dryers
    • D06F58/32Control of operations performed in domestic laundry dryers 
    • D06F58/34Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50Responding to irregular working conditions, e.g. malfunctioning of blowers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

A laundry or tableware treating machine includes: a treating chamber where the items can be introduced to be treated with a treating medium; a control unit (UC1); a heat pump system including a compressor (C), a first heat exchanger for heating a refrigerant, a second heat exchanger for cooling the refrigerant and heating the treating medium and expansion means; at least one active switching device (RL), controllable by the control unit (UC1), for selectively switching ON/OFF the compressor (C). The machine further comprises: at least one passive switching device, not controllable by control unit (UC1), and including a thermo protector circuit (P) adapted to cut the power supply to the compressor (C) when predetermined temperature or voltage load thresholds are exceeded; and monitoring means to detect the opening of the thermo protector circuit (P) to cut the power supply to the compressor (C), wherein the monitoring means includes at least one of the following: a system for monitoring the temperature of the refrigerant; and a sensing circuit to detect a change of potential and/or current at an assembly comprising the compressor (C) and the thermo protector circuit (P).

Description

Medicated clothing or tableware handling machine
Description
Technical field
Present disclosure is related to medicated clothing or tableware handling machine, such as cloth drying and/or washing machine or dish-washing machine, more specifically Be related to a kind of method and system for operating handling machine.
Background
This specification is related to a kind of cloth drying utensil, but this is only an example, identical asks because described herein Topic equally can be in washing machine or other kinds of handling machine as tableware handling machine (for example washes the dishes with identical solution Machine) middle enforcement.In general, drying appliance (for example, drumdrier, cabinet dryer) is included for there being thing to be dried One hothouse of product (that is, medicated clothing), this room (in the case of drumdrier) is rotatably supported on a rack Interior and rotated by driving means, this driving means typically comprises and connects to this hothouse via belt One electro-motor.With reference to Fig. 1 it is known that the laundry treating machine of type generally comprises a cabinet assembly 1, this cabinet assembly Including 2, front panel of a seat element, 4, two side panels 5 of 3, front panel and a top panel 6.
Front panel 3 has an opening, and this opening is closed by a flashboard 15, for introducing pending processing medicated clothing In this machine.Substituting solution includes and opening may be located on top side.In addition, this cabinet assembly 1 typically also props up Support this machine in order to operation parts medicated clothing required for are dried, such as rotary drum 16, control panel 17, air circulation are led Pipe, heater (for example, there is the heat pump of compressor), filter, liquid discharge apparatus etc..
The medicated clothing being dried is taken out by being put into the neutralization of this cylinder by the opening that for example flashboard 15 cuts out, and should Cylinder is generally adapted to be rotated around horizontal axis by means of motor.
Miscellaneous part, such as driving belt etc., are also contained in the running for this drying machine in this cabinet assembly 1, and And will not be further described, because they are well-known to those skilled in the art.
In the fabric dryer with rotary drum (for example, drumdrier), the hot-air of certain flow rate passes through should Cylinder, thus go eliminating water from wet clothes.In this cylinder, the heat that this hot-air is cooled and air is discharged allows clothing Water evaporation in clothes.In heat pump drier, dry air was heated by this condenser before entering cylinder and leaves The dry air of cylinder is cooled via this vaporizer.
In electronically controlled machine, almost all of active load as heater, motor, pump, compressor etc. all itself There is the circuit part of its own, these circuit parts allow to detect certain form of mistake, as activator appliance (relay or two-way Three end IGCTs) do not work, wiring problem.It is known that being acted on to these active switch to be improved the performance of this machine And attempt preventing the undesirable situation as described in U.S. Patent application 2011/0173838.
In addition to these active switch, this laundry treating machine can be equipped with a passive switch, this passive switch Interrupt the supply of electric power to this heat pump compressor when the predetermined threshold of heat or voltage loads or electric current is exceeded.This is passive to open Close when reaching the threshold temperature of this heat pump compressor or reach and disconnect through when the power termination of this passive switch or electric current, example As due to the voltage peak from main line.
When normal functional conditions are reestablished, this passive switch (for example, thermal protector) is adapted to return to and closes Close the mode of operation of this circuit, but exist before this takes place and significantly postpone.Actually it should be noted that compressor thermal protector Have and be back to the big inertia of this make position, typically about 30 minutes.
The disconnection of thermal protector is not to answer event in circulation under normal operation, and therefore highly useful is meaning Know when this situation occurs to find the possible problem of electric current setting and to be possible to apply corrective action to ask to relax this Inscribe and prevent this passive switch to be again off in same dry cycle or in subsequent circulation
The laundry treating machine of prior art can not detect the disconnection of such compressor passive switch, and this may be to this The correct function of machine causes multiple problems.
Method and system for detecting such thermal protector activation is not known in the prior art.
Disclose purpose
One purpose of present disclosure is to overcome at least some of problem associated with the prior art problem.
General introduction
One side according to present disclosure, there is provided a kind of medicated clothing and/or tableware handling machine, including:One process chamber, Article can be introduced in this process chamber to be processed with a kind of medium that processes;One control unit UC1;One heat pump system System, this heat pump includes a compressor C, for heating an a kind of first heat exchanger of cold-producing medium, being used for cooling down this Cold-producing medium and heat a second heat exchanger and the expansion device of this process medium;At least one active switchgear RL, this active switchgear is that this control unit UC1 is controllable and be used for selectively turning on/turn off this compressor C;Wherein This machine further includes:At least one passive switch device, this passive switch device is not that this control unit UC1 is controllable And including a thermal protector circuit P, this thermal protector circuit is adapted in predetermined temperature or voltage loads or electricity The supply of electric power to this compressor C for cut-out when stream threshold value is exceeded;Monitoring devices, for detecting breaking of this thermal protector circuit P Open to cut off the supply of electric power to this compressor C, wherein this monitoring devices includes at least one in the following:For supervising Survey a system of the temperature of this cold-producing medium, comprise at this compressor C and an assembly of this thermal protector circuit P for detection Potential and/or curent change a sensing circuit.
Preferably, control unit UC1 is adapted to implement one in response to the activation this thermal protector circuit P is detected Corrective action, this corrective action include following at least one:
- open a compressor cooling fan;
- adjust and open this compressor cooling fan, this cold-producing medium a upper limit threshold temperature for ordering about;
- adjust for ordering about this compressor cooling fan of shutoff, this cold-producing medium a lower threshold temperature;
The rotating speed of-regulation compressor cooling fan;
- adjust and open, for ordering about, fan, this cold-producing medium that the secondary unit to this heat pump is cooled down A upper limit threshold temperature;
- adjust for ordering about fan, this cold-producing medium that shutoff is cooled down to the secondary unit of this heat pump A lower threshold temperature;
The rotating speed to the fan that the secondary unit of this heat pump the is cooled down for-regulation;
- change this control unit to turn off during this compressor C, this cold-producing medium one via this active switchgear RL Safety threshold temperature.
- regulation is adapted to make this process medium circulation through the rotating speed of a fan of this process chamber;
- adjust the rotating speed of a motor and/or direction of rotation, this motor be adapted for driving the rotation of this process chamber, It is particularly used for reducing the time period of this process chamber reverse rotation;
The rotating speed of-regulation compressor motor.
Preferably, this system for monitoring refrigerant temperature includes this control unit UC1 and at least one sensor, should Sensor is adapted for the refrigerant temperature measuring in the pre-position of this heat pump and passes the information on to this Control unit UC1.
Preferably, this control unit UC1 can reach predetermined value in this refrigerant temperature or be down to below this predetermined value simultaneously And this active switchgear RL is in for the disconnection identifying this thermal protector circuit P when in the open position of compressor C.
Preferably, this system for monitoring refrigerant temperature is adapted for maintaining in a storage area and is directed to In the precalculated position of this heat pump a reference parameter of measured preferred temperature, monitor the temperature that this sensor is detected Angle value, in response to these monitor values with respect to this at least one with reference to parameter exception to determine this thermal protector electric power P swash Live.
Preferably, this reference parameter includes the graded of a curve representing time dependent monitoring temperature value A predetermined threshold, and the wherein abnormal step of this determination comprises the following steps:
- set up the time dependent curve of institute's detection temperature value
- measure the gradient of this curve at regular intervals;
- multiple gradients in succession measuring are compared to determine whether difference exceedes this predetermined threshold.
Preferably, the step that this determination anomaly exists includes filtering this curve with a lowpass digital filter.
Preferably, this temperature is the outlet in this second heat exchanger and/or the measurement of the entrance in this expansion device.
Preferably, this sensing circuit includes connecting at least one testing circuit at least one to the following ECS1、ECS2、ECSH1、ECSH2:
- positioned at a junction point between this thermal protector circuit P and compressor C;
- positioned between the live wire of feeder cable that this thermal protector circuit P is connected with this compressor C or zero line Junction point;
- positioned at a connection between the live wire of feeder cable that this compressor C is connected with this compressor C or zero line Point.
Preferably, this compressor C and this thermal protector circuit P is connected in series, by this compressor C and this thermal protector The assembly that circuit P is formed connects to feeder cable, and wherein this sensing circuit includes:
- connect this control unit UC1 to this at least one active switchgear RL;
- at least one first testing circuit ECS2, this first testing circuit one side connect to this thermal protector circuit P with On a junction point between this compressor C and on the other hand connect to this control unit UC1;
- this control unit UC1 according to this active switchgear RL be in inactivation or activation condition get off assessment this at least one The output of individual first testing circuit ECS2, so that the state of assessment thermal protector circuit P.
Preferably, this thermal protector circuit P is electrically connected on this active switchgear RL, and this control unit UC1 exists This active switchgear RL detects the output of this testing circuit ECS2 when being and disconnecting and close.
Preferably, this compressor C is electrically connected on this active switchgear RL, and this control unit UC1 is active at this Switching device RL detects the output of this testing circuit ECS2 when being and disconnecting and close.
Preferably, this control unit UC1 is connected to one also by a second testing circuit ECS1 and is located at this compression Between machine C and this active switchgear RL or be located at connection between this thermal protector circuit P and this active switchgear RL Point on.
Preferably, this compressor C and this thermal protector circuit P is connected in series, by this compressor C and this thermal protector The assembly that circuit P is formed connects to feeder cable, and wherein this sensing circuit includes:
- connect this control unit UC1 to this active switchgear RL;
- connect shunting assessment circuit ECSH1, ECSH2 to a shunting device, this shunting device SH1, SH2 The assembly arranged in series being and being formed by this compressor C and this thermal protector circuit P, with monitor shunting device SH1, The electric current of flowing in SH2,
- this control unit UC1 is in for the open position of this compressor C according to this active switchgear RL and assesses this The output of shunting assessment circuit ECSH1, ECSH2, to assess the state of this thermal protector circuit P.
Preferably, this shunting device SH1, SH2 is disposed between at least one of the following:
The live wire of-compressor C and feeder cable or zero line;
- thermal protector circuit P and active switchgear RL;
- compressor C and active switchgear RL;
The live wire of-thermal protector circuit P and feeder cable or zero line;
- compressor C and thermal protector circuit P.
This thermal protector circuit of method and system operational monitoring according to a preferred embodiment of the invention activate and to Some corrective actions of arrangement are gone out to reduce the probability of the following occurrence probability of this Class Activation.
The invention provides multiple advantages.One of advantage of method according to a preferred embodiment of the invention is by limiting Improve and (or washing/drying) is dried because compressor reaches the appearance of the machine disruptions caused by excess temperature or excessive loads The efficiency of machine.If quickly detecting the activation of this thermal protector circuit, microcontroller can be implemented to improve this machine The following efficiency of device (for example, heat pump whizzer) and reliability are target correction action.
Brief Description Of Drawings
By way of example, now with reference to accompanying drawing, in the accompanying drawings:
Fig. 1 is the schematic diagram of the clothesdrier of the method and system that can implement present disclosure;
Fig. 2 is schematically showing of the critical piece of the machine of method and system of enforcement present disclosure;
Fig. 3 is schematically showing of the critical piece of the machine of method and system of enforcement present disclosure;
Fig. 4 is schematically showing of the critical piece of the machine of method and system of enforcement present disclosure;
Fig. 5 is the curve of compressor condenser temperature and its diagrammatic representation of corresponding slope curve, shows and works as Thermal protection Device interrupts the behavior of this slope curve during the supply of electric power to compressor;
Phase diagram when Fig. 6 shows when this thermal protector inactivation and the supply of electric power of this compressor is recovered again Table is shown;
Fig. 7 is the diagram of the method and step of present disclosure first embodiment;
The system that Fig. 8 to Figure 13 shows according to present disclosure detects the activation of this thermal protector circuit by using circuit Multiple alternate embodiment.
The detailed description of preferred implementation
System and method according to a preferred embodiment of the invention be directed to laundry treating machine (for example, rotating cylinder do Dry machine or washing/drying machine) normal clothes process swashing of detection thermal protector circuit in (for example, be dried) cyclic process Live.
As described above, this specification have references to a kind of heat pump laundry dryer (for example, heat pump whizzer), but This described identical solution can apply to other kinds of laundry treating machine, such as washing machine or washing/drying Machine.
Generally, included according to the laundry treating machine of the present invention:One process chamber, can introduce clothes items at this To be processed with a kind of medium that processes in reason room;One loop, (this process medium is in the feelings of whizzer for this process medium Under condition can be for example air or be water in a case of the washing machine) circulate wherein;One heat pump, this heat pump bag Include a compressor C, be used for heating an a kind of first heat exchanger of cold-producing medium, being used for cooling down this cold-producing medium and heating this Process a second heat exchanger of medium;At least active switch dress for optionally this compressor of activation/deactivation Put;Including at least passive switch device of a thermal protector circuit P, this thermal protector circuit be adapted in predetermined temperature or The supply of electric power to this compressor C for cut-out when load threshold is exceeded.
Fig. 2 schematically shows and implements a kind of possible laundry treating machine of the present invention, more specifically a kind of heat pump Whizzer, this machinery equipment includes a hothouse 201, preferably rotatably installs in outer rack and accommodate this One cylinder of multiple devices of machine.Clothes to be dried or article will be had to put into this drying by this rack aperture In room, especially put in rotatable cylinder, this cylinder may be enclosed in the interior that is filled with water (in washing/drying equipment In the case of generally such, and be not usually required to, for simple drying machine, the room that is filled with water).By a drive system, for example as The electro-motor 203 connecting to this cylinder via belt, to make this cylinder rotate.One air intlet path connects to this The side of a hothouse and air outlet path connects to the opposite side of this hothouse.This air intlet path, air Outlet pathway and hothouse define a dry air loop 205.A commonly provided fan 207 is for making dry air Move along this loop.One dedicated motor 209 can be attached on fan 207, but in possible simpler enforcement In mode, same motor can make fan 207 and cylinder 201 operate and (in other words there may be in this two motor 203 and 207 Only one).
This drying system includes a heat pump, and this heat pump includes a compressor C, serves as one of Cryoprecipitation One heat exchanger 211 (also referred to as vaporizer) is (that is, as vaporizer or gas in the case that cold-producing medium is at least with critical pressure operation Body heater), serve as a heat sink second heat exchanger 213 (that is, situation about at least running with critical pressure in this cold-producing medium It is down condenser or gas cooler).Between first heat exchanger 211 and second heat exchanger 213, generally provide one Choke valve 215.The substituting solution of this choke valve includes expansion device, capillary tube or controlled expansion valve.Shown in Fig. 2 Embodiment in, this dry air loop defines a substantially closed loop and second heat exchanger 213 is arranged Downstream in first heat exchanger 211.
Preferably, a cooling fan 217 is provided to cool down this compressor.
In another embodiment, as shown in figure 4, this heat pump may further include a secondary unit 219, this secondary unit is preferably arranged in the downstream of second heat exchanger 213 and serves as from this heat pump A middle auxiliary condenser removing heat.A supplement heat rejecter fan 221 is provided to make air stream move through this auxiliary heat Exchanger 219.In a preferred embodiment, it is possible to use compressor C is cooled down simultaneously by the single cooling fan of only one And be used for making air flow towards auxiliary condenser 219.
One control unit UC1 operates this compressor cooling fan 217 and fan 221 so that predetermined according to this cold-producing medium Temperature is cooling down this auxiliary condenser 219.
The laundry treating machine implementing the method and system according to one preferred embodiment of present disclosure is preferably controlled Unit UC1 controls, and this control unit receives the information of this system for monitoring refrigerant temperature and/or this is used for detecting this Comprise the information of the sensing circuit of potential at compressor C and the assembly of thermal protector circuit P and/or curent change.When detecting During activation (that is, the disconnecting) of this thermal protector circuit P, information is passed to control unit UC1, and this control unit can be taken can One or more of one group of corrective action of energy.And, due to the disconnection of this passive switch device can be detected, can be by this Individual situation record is in control unit UC1 to help maintainer correctly to diagnose possible mechanical disorder reason.
As described above, the disconnection of thermal protector is not to answer event in circulation under normal condition.
If the event of this species is therefore detected, assume that this machine breaks down, this is possibly due to not Same the reason, as non-optimal installation, ambient temperature, wave filter of blocking etc..
An additional advantage related to the disconnection that can detect thermal protector is the chance of application loop parameter modification, So that reduce occur this event same circulation in another cut-out event probability and majority of case is to reduce In the future/subsequent circulation in the probability of cut-out event occurs, so as not to affect normal circulating continuancing time and consumption.
According to the present invention it is possible to two kinds of different modes of the activation of this thermal protector circuit of examinations:First kind of way Including the temperature being monitored cold-producing medium by means of multiple temperature sensors;The second way is included by means of multiple special sensing electricity Road comprises compressor and the electrical component of thermal protector circuit monitoring this.It is single that the information of detected activation is provided to control First UC1, a corrective action, such as loop parameter modification can be assessed and be executed to this control unit, and this corrective action can be only Stand on the mode of disconnection detecting this thermal protector and implement.
One possible corrective action is the behavior of modification compressor cooling fan 217:
- immediately turn on compressor cooling fan 217 when the disconnection of thermal protector is detected to reduce thermal protector again The shutoff required time (especially when the disconnection of thermal protector is to be caused due to electric current absworption peak or circuit microinterrupt, because Be when this disconnection (activation) be due to overheated when be possible to this fan and have been switched on);
- change for ordering about the cold-producing medium upper limit threshold temperature opening this compressor cooling fan, and/or change for driving The cold-producing medium lower threshold temperature making this compressor cooling fan of shutoff is to guarantee more preferable compressor cooling.For example, it is possible to fall The low cold-producing medium upper limit threshold temperature opened during fan (for example, detects with respect to the exit in second heat exchanger 213 Refrigerant temperature, from 56 DEG C to 52 DEG C).Additionally or alternatively, cold-producing medium lower threshold temperature when turning off fan can be reduced Degree (refrigerant temperature for example, detecting with respect to the exit in second heat exchanger 213, from 54 DEG C to 48 DEG C).Preferably Ground, the run time increasing compressor cooling fan 217 is spaced to allow for more preferably faster cooling down;
- change the rotating speed of this fan, such as more than a predetermined refrigerant temperature to improve the cooling of this compressor, outstanding It is the rotating speed increasing this fan.
Another possible corrective action is modification for cooling down the behavior of the fan 221 of this secondary unit:
The rotating speed increasing fan 221 or the activationary time interval increasing this fan.
Can carry out affecting compressor function another action be:
- modification (reduction) this control unit to turn off refrigerant temperature during compressor via above-mentioned active switchgear, To prevent this thermal protector circuit from disconnecting.
It is true that when refrigerant temperature is more than the maximum of a configuration, this compressor is turned off for a moment, until meeting The correct condition restarted.Advantage is, in this case, the time that compressor is held off is than under thermal protector disconnection Time (about 30 minutes) shorter (about 3 to 5 minutes), thus allowing the persistent period of this circulation not especially to be affected and simultaneously Maintain the safety condition of this compressor.For example, the maximum of this configuration can be lowered, such as, from 70 to 65 degree, such as basis exists Refrigerant temperature detected by the exit of this second heat exchanger.
Another action can be adjust this compressor electro-motor rotating speed to reduce averaged lower bound runtime value when Compressor exports, and thus reduces the temperature of this compressor.
And the modification to cylinder/technique fan motor parameter can be applied to attempt to ensure that more preferable cycling condition:
The motor speed of-modification (increase) this technique fan is to guarantee higher air velocity.This is especially in filter quilt The circulation (as the circulation of dark cycle/peace and quiet option) reducing during blocking or for air velocity may be helpful to.
- modification drum motor reversion behavior, this is related when single motor drives this technique fan and this cylinder, such as Shown in Fig. 3.In motor reversion phase process, the direction of rotation of this motor changes preferably to overturn medicated clothing, should but work as When technique fan rotates in a main direction, this technique fan only provides a part for available nominal flow rate, and dry air stream The reduction of speed may make compressor operating condition become worse.In order to attempt improving this aspect it is possible to:
- reduce motor dwell time and/or reduce the time interval that this motor direction of rotation is inverted the stage;
- reduce reversal frequency, including the chance avoiding any reversion in the remaining persistent period of this circulation completely;
- it is inverted increase motor speed in phase process to increase available in this phase process in motor direction of rotation Dry air stream.
In the first embodiment of the present invention, the change of refrigerant temperature is measured using a temperature sensor.Specifically For, NTC thermistor is arranged in one way to measure the cold-producing medium temperature of condensator outlet and/or expansion device entrance Degree;Additionally or alternatively, this temperature sensor can be arranged at the various location of this heat pump, such as compressor C's Exit.
By assessing the behavior of this signal, will appreciate that this compressor thermal protector is too high in electric current absworption peak or temperature Or whether this compressor is temporarily disconnected with this circuit after circuit microinterrupt.It is true that when this thermal protector is for compressing When the circuit that machine is powered disconnects, temperature starts to reduce after short times.Detect that this temperature drop provides one kind and clearly refers to Show, that is,:This compressor is deactivated by the disconnection of this thermal protector.
For example, if the refrigerant temperature at condensator outlet is especially reduced to a below predetermined value, result is heat Protector is to disconnect.It is emphasized that active switchgear RL is substantially still in make position, so according to control unit CU1, this compressor should run, it is apparent that need this control unit UC1 to recognize due to the disconnection of thermal protector leading to Inappropriate inactivation of this compressor.
Preferably, control unit UC1 monitors the state of active switchgear RL to examine by means of a testing circuit When survey active switchgear RL is in and is opened or closed position.
According to a preferred embodiment of present disclosure, calculate temperature slope to determine the appearance of this thermal protector activation.? In cyclic process, condenser temperature is due to the activation of such as compressor cooling fan or because drum motor (connects to technique fan On) invert the caused temporary transient decline of air velocity and there are various vibrations.If this slope is not having any obvious cause In the case of drop to negative, then we be contemplated that reason be thermal protector disconnect.
In fig. 5 it is shown that the exemplary curve of this kind of measured temperature, wherein it will be seen that in the case The negative value of this slope is particularly apparent with respect to other reasonses (as drum motor reversion).
For example, by often to calculate below equation every few seconds can determine temperature slope:
Slope (t)=Temp (t)-Temp (t-5sec)
Then filter this result to avoid peak value with a low pass filter:
Filt_Slope (t)=Filt_slope (t-1) * (1- α)+Slope (t) * α
Wherein α<1.
In Figure 5, curve A represents time dependent condenser temperature, and curve B is with after low pass filter filtration The slope of temperature curve A.
Line C represent thermal protector Circuit activation after compressor two kinds of possible states (switching on or off).As shown in figure 5, Little slope reduces SD and may only be because normal machine behavior (for example, motor reversion caused), and constant slope Declining SF (for example, more than a predetermined threshold) is rationally to refer to due to a kind of of the cut-out caused by thermal protector Circuit activation Show.Method in a preferred embodiment of the present invention be based on it is assumed hereinafter that:It is considered more than the slope of a predetermined threshold It is activation thermal protector circuit is detected.Those skilled in the art will be appreciated that, such threshold value can be special according to machine Levy and/or historical data is adjusted and adjusts.
To disconnect identical mode additionally it is possible to detect the recovery of working condition with just now detecting thermal protector:This control list Unit can be programmed to again these amended conditions are reacted and execute some actions.Now illustrate Fig. 3 in figure 6 Same curve A, B and C, show when this thermal protector circuit is deactivated thus causing the slope exceeding predetermined threshold to prolong Situation about stretching.
Fig. 7 schematically shows a diagram of the method and step representing present disclosure first embodiment.This process is to use For example it is being dried or washing or washing/drying machine, the broadly dry cycle process in laundry treating machine in detection The method of the activation of middle thermal protector circuit.This process is started with circle 501 and is transferred to frame 503, assesses at any time herein Between change preferred temperature.It is permissible in the case that this machine has the one or more groups of predetermined values being stored in built-in storage The step for skip.Then this process goes to step 505, wherein monitors the temperature of the condenser of this laundry treating machine:At this In example, it is contemplated that be pump type heat whizzer, but identical method can be in other kinds of laundry machine Implement on device.As described above, this can be completed by means of the sensor being capable of detection temperature;Can be by these transducer arrangements Become for example near the condenser being associated with compressor C.When exception (step 509) of preferred temperature is detected, start one Corrective action (step 511).Determine abnormal mode can by several different in the way of implement, these modes are from simple Threshold value compare more complicated, with expected value, the temperature curve being detected is analyzed, as described above.These corrections are dynamic Work can also by having been explained above and those skilled in the art be readily understood by several different in the way of implementing.Also should It is understood by, or even this temperature monitoring can be completed in an indirect way, for example, pass through to monitor the pressure in this refrigerant loop. Then this process is back to step 505 and restarts again, until it reaches the terminal (507) of processing cycle.To circulation eventually The determination of point can by several different in the way of completing, such as when passing predetermined drying time, it is contemplated that example As the temperature of medicated clothing or mass dryness fraction parameter or more complicated.
Replacement solution for determining the activation of this thermal protector circuit is by detecting this thermal protector circuit State change for the purpose of a sensing circuit.The multiple possible enforcement of this second embodiment is illustrated in Fig. 8 to Figure 13 Mode.By this embodiment, this thermal protector can be directly acquainted with by explaining the received information of this circuit itself Circuit P is to disconnect or close.
The first embodiment of sensing circuit is illustrated, wherein compressor C is to connect with thermal protector circuit P even in Fig. 8 Connect, and be connected to the live wire L and zero line N of feeder cable by the assembly that compressor C and thermal protector circuit P are formed On.
One active switchgear RL (typically relay or solid-state device, for example two-way three end IGCTs etc.) is edge Zero line N and be disposed so that control unit UC1 carries out activation/deactivation to this compressor C.This active switchgear under " relay " will be referred to as always, it should be understood that it can be a different switching device in literary composition.
According to this embodiment, this system for detecting thermal protector circuit P-state includes one first detection Circuit ESC1, the second testing circuit ESC2 and this control unit UC1.
Connection and the operation of these parts are described in more detail below, and not to this control unit UC1 structurally and operationally It is explained in detail, because this is obvious to those skilled in the art.
At the terminal contrary with the terminal connecting to zero line N, compressor C is electrically connected on live wire L and heat is protected Shield device circuit P is electrically connected on relay RL.In other words, when this relay is in activation condition, compressor C connects to electricity On the zero line N of power main line.
With reference first to Fig. 8, on the one hand, this first testing circuit ECS1 is connected to zero line N by a sensing electric wire S1 Above and just in the downstream of relay RL.On the other hand, this first testing circuit ECS1 connects to control unit UC1.
On the one hand, second testing circuit ECS2 connected by a sensing electric wire S2 to thermal protector circuit P with On junction point between compressor C.On the other hand, this second testing circuit ECS2 connects to control unit UC1.
Control unit UC1 is also connected on relay RL to control its condition.By this configuration, control unit UC1 is led to Cross the output assessing the first testing circuit ECS1 when relay RL is in inactivation condition and can assess thermal protector circuit P's State is to disconnect or close to establish it.
It is true that if thermal protector circuit P is closure, the first testing circuit ECS1 substantially detects live wire electricity Gesture, and if thermal protector circuit P is to disconnect, then the first testing circuit ECS1 substantially detects zero line potential.
However, when relay RL is under activation condition, sensing electric wire S1 is connected directly on zero line N and its output is Directly depend on zero line circuit and unrelated with thermal protector circuit P-state.
In this case, control unit UC1 can assess heat guarantor by assessing the output of the second testing circuit ESC2 The state of shield device circuit P.
It is true that if thermal protector circuit P is closure, the second testing circuit ECS2 substantially detects zero line electricity Gesture, and if thermal protector circuit P is to disconnect, then the second testing circuit ECS2 substantially detects live wire potential.
With reference to Fig. 9, in a kind of possible various configuration of this equipment, wherein thermal protector circuit P is electrically connected to fire On line L and when this compressor C is electrically connected on relay RL, situation is in turn.
By this configuration, control unit UC1 by assessing the first testing circuit when relay RL is in inactivation condition The output of ECS1 and the second testing circuit ECS2 and the state of thermal protector circuit P can be assessed and can to establish it be to disconnect Or closure.
It is true that if thermal protector circuit P is closure, the first testing circuit ECS1 substantially detects and is essentially pulled up to One potential of live wire potential, and if thermal protector circuit P is to disconnect, then the first testing circuit ECS1 both substantially detects Disconnected to a live wire also disconnected afloat contact to zero line.
It is true that if thermal protector circuit P is closure, the second testing circuit ECS2 substantially detects live wire electricity Gesture, and if thermal protector circuit P is to disconnect, then the second testing circuit ECS2 substantially detects zero line potential.In this structure In type, there is provided with regard to the reliability to improve this sensing circuit for the duplication check of thermal protector circuit P-state.
When relay R is alternatively under activation condition, sensing electric wire S1 is connected directly on zero line N by zero line circuit And its output is to directly depend on zero line and unrelated with thermal protector circuit P-state.This condition in this relay Under, control unit UC1 by assess the second testing circuit ECS2 output and can assess thermal protector circuit P state and Can be set up it is to disconnect or close.Further, if thermal protector circuit P is closure, the second testing circuit ECS2 substantially detects live wire potential, and if thermal protector circuit P is to disconnect, then the second testing circuit ECS2 substantially examines Survey zero line potential.
Activation (that is, disconnecting) (that is, this pressure only when active switchgear RL is closed in view of thermal protector circuit P When contracting machine is connected and activates) it is likely to occur, a kind of better simply embodiment of the second embodiment of the present invention is can Can.With reference to Figure 10, the relatively simple version of foregoing circuit includes only one testing circuit ECS2, and this testing circuit passes through one and feels Survey electric wire S2 to connect to a junction point between thermal protector circuit P and compressor C.In this case, control unit UC1 can assess thermal protector by assessing the output of the second testing circuit ECS2 only when active switchgear RL is closed The state of P, wherein compressor C connect to live wire L and thermal protector P connects to zero line N.If it is true that Thermal protection Device circuit P is closure, then the second testing circuit ECS2 substantially detects zero line potential, and if thermal protector circuit P is disconnected Open, then the second testing circuit ECS2 substantially detects live wire potential.
On the contrary, when active switchgear RL is to disconnect, the second testing circuit ECS2 always detects and thermal protector circuit P The unrelated live wire potential of state.
On the contrary, as shown in figure 11, connecting to zero line N in compressor C and thermal protector P connect to the situation of live wire L Under, control unit UC1 can assess the state of thermal protector P, even if this active switchgear RL is to disconnect.
The sensing circuit of the embodiment according to Figure 11 can by the output of assessment the second testing circuit ECS2 The state of assessment thermal protector P when this active switchgear RL is closure.Further, if thermal protector circuit P is closure , then the second testing circuit ECS2 substantially detects live wire potential, and if thermal protector circuit P is to disconnect, then the second inspection Slowdown monitoring circuit ECS2 substantially detects zero line potential.
In addition, as described above, the sensing circuit of embodiment according to Figure 11 passes through to assess the second testing circuit The output of ECS2 and can be also assessment thermal protector P when disconnecting in same this active switchgear RL state.It is true that such as Fruit thermal protector circuit P is closure, then the second testing circuit ECS2 substantially detects live wire potential, and if thermal protector is electric Road P is to disconnect, then the second testing circuit ECS2 substantially detect both disconnected to live wire and disconnected to zero line one Afloat contact.
With reference to Figure 12, describe the another embodiment of the second embodiment of present disclosure.
By this configuration, the electric current of the assembly being become with thermal protector circuit p-shaped via compressor by measurement stream and energy Solution thermal protector circuit P much of that is to disconnect or close.In addition, passing through this embodiment, can avoid connecting to Thermal protection Sensing electric wire S2 on junction point between device circuit P and compressor C.
This allows to save manufacturing cost and obtain less complexity, because not needing to make extra electric wire formation lead to this The circuit board of compressor/thermal protector system.
As in embodiment before, compressor C is connected in series with thermal protector circuit P and is connected dry to electric power On line.
Equally in the present embodiment, this system for detecting thermal protector circuit P-state includes connecting to relay RL upper with by this control unit UC1 of compressor C activation/deactivation.
One testing circuit ECS1 mono- aspect connected by a sensing electric wire S1 be located to zero line N relay RL and Between thermal protector circuit P and on the other hand connect to control unit UC1, similar to embodiment described before.
One diverter assessment circuit ECSH1 connects to a shunting device SH1, and this shunting device is arranged to and heat Protector circuit P and compressor C series connection.Shunting device SH1 is disposed adjacent to this compressor along ignition line L.
This diverter assessment circuit ECSH1 connects to control unit UC1.
By this configuration, the output of control unit UC1 assessment testing circuit ECS1 when relay RL is closure.Relay The state of device RL is monitored by means of this first testing circuit ECS1 by control unit UC1
When this relay is under this compressor activation condition, control unit UC1 passes through this diverter assessment circuit ECSH1 is to close or disconnected to have verified whether electric current to flow and to establish this thermal protector circuit P in shunting device SH1 Open.
A kind of different configuration of this equipment is shown, wherein shunting device SH2 is disposed in thermal protector electricity in Figure 13 Between road P and active switchgear RL.
It will be appreciated that, above content can be changed in the case of without departing substantially from the scope of the present invention and be changed. Natural, in order to meet local requirement and particular/special requirement, many modifications and changes can be applied to above-mentioned by those skilled in the art Solution.Specifically although present disclosure describes on certain the level of detail with reference to one or more preferred embodiment, It should be understood that being also possible in the various omissions, substitutions and changes in terms of form and details and other embodiment 's;Additionally, clearly it is desirable that the particular element describing with reference to any disclosed embodiment of present disclosure and/or method walk Suddenly can be introduced in any other embodiment as the general content of design alternative.

Claims (16)

1. a kind of medicated clothing and/or kitchen tools handling machine, including:
- one process chamber (16), wherein article can be introduced to be processed with a kind of medium that processes;
- one control unit (UC1);
- one heat pump, this heat pump includes a compressor (C), one first heat for heating a kind of cold-producing medium Exchanger (211), for cooling down this cold-producing medium and heating a second heat exchanger (213) of this process medium and swollen Swollen device;
- at least one active switchgear (RL), this active switchgear is that this control unit (UC1) is controllable and be used for selecting Turn on to selecting property this compressor (C);
It is characterized in that, this handling machine further includes:
- at least one passive switch device, this passive switch device is not that this control unit (UC1) is controllable and include one Individual thermal protector circuit (P), this thermal protector circuit is adapted to be exceeded in predetermined temperature or voltage loads or current threshold When the supply of electric power to this compressor (C) for the cut-out;
- be used for detecting the monitoring devices to cut off the supply of electric power to this compressor (C) for the disconnection of this thermal protector circuit (P), Wherein this monitoring devices includes at least one in the following:For monitoring a system of the temperature of this cold-producing medium, being used for Detect a sense comprising potential and/or curent change at this compressor (C) and an assembly of this thermal protector circuit (P) Slowdown monitoring circuit.
2. handling machine according to claim 1, this system of the wherein temperature for monitoring this cold-producing medium includes this control Unit (UC1) processed and at least one sensor, this sensor is adapted for measuring a pre-determined bit in this heat pump The refrigerant temperature at the place of putting and passing the information on to this control unit (UC1).
3. handling machine according to claim 1 and 2, wherein this control unit (UC1) can be in the temperature of this cold-producing medium Reach a predetermined value or drop to below this predetermined value and this active switchgear (RL) is in for this compressor (C) The disconnection of this thermal protector circuit (P) is identified when in open position.
4. handling machine according to claim 2, this system of the wherein temperature for monitoring this cold-producing medium is adapted to For
- maintain in a storage area for preferred temperature measured in a precalculated position of this heat pump one Individual reference parameter;
- monitor temperature value detected by this sensor;
- the value in response to being monitored to determine this thermal protector circuit (P) with respect to the exception of this at least one reference parameter Activation.
5. handling machine according to claim 4, wherein this reference parameter include a monitoring temperature representing in time One predetermined threshold of the graded of the curve of angle value, and the wherein abnormal step of this determination comprises the following steps:
- set up the time dependent curve of institute's detection temperature value
- measure the gradient of this curve at regular intervals;
- multiple gradients in succession measuring are compared to determine whether difference exceedes this predetermined threshold.
6. handling machine according to claim 5, the step that wherein this determination anomaly exists is included with a Low pass digital Wave filter is filtering this curve.
7. handling machine according to claim 1, the temperature of wherein this cold-producing medium is the outlet in this second heat exchanger And/or in the measurement of the entrance of this expansion device.
8. handling machine according to claim 1, wherein this sensing circuit include at least connecting to the following At least one testing circuit (ECS1, ECS2, ECSH1, ECSH2) on item:
- positioned at a junction point between this thermal protector circuit (P) and this compressor (C);
- positioned between the live wire of feeder cable that this thermal protector circuit (P) is connected with this compressor (C) or zero line Junction point;
- positioned at a connection between the live wire of feeder cable that this compressor (C) is connected with this compressor (C) or zero line Point.
9. the handling machine according to claim 1 or 8, wherein this compressor (C) are to connect with this thermal protector circuit (P) Connect, connected to feeder cable by the assembly that this compressor (C) and this thermal protector circuit (P) are formed, and wherein This sensing circuit includes:
- connect this control unit (UC1) to this at least one active switchgear (RL);
- at least one first testing circuit (ECS2), this first testing circuit one side connect to this thermal protector circuit (P) with On a junction point between this compressor (C) and on the other hand connect to this control unit (UC1);
- this control unit (UC1) according to this active switchgear (RL) be in inactivation or activation condition get off assessment this at least one The output of individual first testing circuit (ECS2), so that the state of assessment thermal protector circuit (P).
10. handling machine according to claim 8, wherein this thermal protector circuit (P) are electrically connected to this active switch On device (RL), this control unit (UC1) detects this testing circuit when this active switchgear (RL) is and disconnects and close (ECS2) output.
11. handling machines according to claim 8, wherein compressor (C) are electrically connected to this active switchgear (RL) On, this control unit (UC1) detects this testing circuit (ECS2) when this active switchgear (RL) is and disconnects and close Output.
12. handling machines according to claim 1, wherein this compressor (C) are and this thermal protector circuit (P) company of series connection Connect, connected to feeder cable by the assembly that this compressor (C) and this thermal protector circuit (P) are formed, and wherein should Sensing circuit includes:
- connect this control unit (UC1) to this active switchgear (RL);
- connect shunting assessment circuit (ECSH1, ECSH2) to a shunting device (SH1, SH2), this shunting device The assembly arranged in series being and being formed by this compressor (C) and this thermal protector circuit (P), to monitor in shunting device The electric current of flowing in (SH1, SH2)
- this control unit (UC1) is in for the open position of this compressor (C) according to this active switchgear (RL) and assesses The output of this shunting assessment circuit (ECSH1, ECSH2), to assess the state of this thermal protector circuit (P).
13. handling machines according to claim 12, wherein this shunting device (SH1SH2) are disposed in the following At least one between:
The live wire of-compressor (C) and feeder cable or zero line;
- thermal protector circuit (P) and active switchgear (RL);
- compressor (C) and active switchgear (RL);
The live wire of-thermal protector circuit (P) and feeder cable or zero line;
- compressor (C) and thermal protector circuit (P).
14. handling machines according to claim 8, wherein this control unit (UC1) is also by second testing circuit (ECS1) it is connected to one positioned between this compressor (C) and this active switchgear (RL) or electric positioned at this thermal protector On junction point between road (P) and this active switchgear (RL).
15. handling machines according to claim 1, wherein this control unit (UC1) are adapted in response to detecting this The activation of thermal protector circuit (P) includes at least one in the following implementing a corrective action, this corrective action:
- open a compressor cooling fan (217);
- adjust to be used for ordering about and open this compressor cooling fan (217), a upper limit threshold temperature of this cold-producing medium;
- adjust to be used for ordering about and turn off compressor cooling fan (217), a lower threshold temperature of this cold-producing medium;
The rotating speed of-regulation compressor cooling fan (217);
- adjust for order about open the secondary unit (219) of this heat pump is cooled down fan (221), should One upper limit threshold temperature of cold-producing medium;
- adjust for order about turn off the secondary unit (219) of this heat pump is cooled down fan (221), should One lower threshold temperature of cold-producing medium;
The rotating speed to the fan (221) that the secondary unit (219) of this heat pump the is cooled down for-regulation;
- change this control unit (UC1) to turn off during this compressor (C), this cold-producing medium via this active switchgear (RL) A safety threshold temperature;
- regulation is adapted to make this process medium circulation through the rotating speed of a fan (207) of this process chamber (16);
The rotating speed of one motor (209) of-regulation and/or direction of rotation, this motor is adapted for driving this process chamber to rotate;
The rotating speed of-regulation compressor motor.
16. handling machines according to claim 15, wherein this motor are adapted for reducing this process chamber and reversely revolve The time period turning.
CN201380034035.0A 2012-06-29 2013-06-17 A laundry or tableware treating machine Active CN104583483B (en)

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EP12174262.1A EP2679718A1 (en) 2012-06-29 2012-06-29 A laundry or tableware treating machine
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PCT/EP2013/062482 WO2014001114A1 (en) 2012-06-29 2013-06-17 A laundry or tableware treating machine

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CN104583483A (en) 2015-04-29
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WO2014001114A1 (en) 2014-01-03
EP2867400A1 (en) 2015-05-06
EP2679718A1 (en) 2014-01-01

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