CN102656314B - Comprise the household electrical appliance of expansion system - Google Patents
Comprise the household electrical appliance of expansion system Download PDFInfo
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- CN102656314B CN102656314B CN201080056724.8A CN201080056724A CN102656314B CN 102656314 B CN102656314 B CN 102656314B CN 201080056724 A CN201080056724 A CN 201080056724A CN 102656314 B CN102656314 B CN 102656314B
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- process air
- electrical appliance
- household electrical
- producing medium
- cold
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Drying Of Solid Materials (AREA)
- Air Conditioning Control Device (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
The present invention relates to a kind of household electrical appliance (1), described household electrical appliance (1) comprise the Processing Room (2) for the treatment of article (3), for the process air guider (5) of boot process air by described Processing Room (2), described process air guider (5) comprises the air blast (6) for driving described process air, for heating described process air and being placed on heater (7) and the heat pump (7 of the upstream of described Processing Room (2), 8, 9, 10, 11), wherein, described heater (7) is thermal source (7), for by heat from cycling through described heat pump (7, 8, 9, 10, 11) cold-producing medium is transported to described process air, and wherein, described heat pump (7, 8, 9, 10, 11) radiator (8) for heat being delivered in described cold-producing medium is also comprised, for compressing the compressor (9) of described cold-producing medium, for the expansion system (10) of the described cold-producing medium that expands and for making described refrigerant circulation by described heat pump (7 in loop, 8, 9, 10, 11) cold-producing medium guider (11).Described expansion system (10) has variable bound, and described variable bound can be controlled from the control unit of the signal of sensor unit (15,16) by response.
Description
Technical field
The present invention relates to a kind of household electrical appliance, described household electrical appliance comprise the Processing Room for the treatment of article, for the process air guider of boot process air through described article Processing Room, described process air guider comprises the air blast for driving described process air, for heating described process air and being placed on heater and the heat pump of the upstream of described Processing Room, wherein, described heater is thermal source, for heat is transported to described process air from the cold-producing medium cycling through described heat pump, wherein, described heat pump comprises the radiator for heat being transported to described cold-producing medium further, for compressing the compressor of described cold-producing medium, for the expansion system of the described cold-producing medium that expands and for making described refrigerant circulation by the cold-producing medium guider of described heat pump in the closed circuit, be connected to the control unit of described expansion system, and the sensor unit to be associated with described heat pump, described control unit is conveyed to the signal of described control unit by described sensor unit for responding, control the constraint of described expansion system.
Background technology
Such household electrical appliance are disclosed at US2007/0107255A1.
The household electrical appliance of this universal class are disclosed in WO 2008/107266 A1.This application disclose a kind of household washing drying machine, the heat pump of described scrubbing-and-drying unit is the heat pump of type of compressor, it is characterized in that having the cold-producing medium be directed in the cold-producing medium guider closed.In order to realize association radiator in absorb heat, described cold-producing medium is evaporated in described radiator, and from the thermal source of described association releasing heat, described cold-producing medium is liquefied in described thermal source.In order to realize the propagation of heat and make described evaporation and liquefaction process occur in applicable temperature, when described gaseous refrigerant is from described heat sink to described thermal source, described gaseous refrigerant is compressed, and when described cold-producing medium turns back to described radiator from described thermal source, described liquid refrigerant expands in expansion system.According to quoted document, specifically select the compressor be made up of described heat pump and described cold-producing medium.
A kind of cleaning device of radiator of clean heat pump in scrubbing-and-drying unit is disclosed in document WO 2008/119611 A1.Radiator in scrubbing-and-drying unit can make operation degenerate owing to comprising the small particle of fibre debris etc., and these small particles are commonly referred to the end of a thread or velveteen, and is extract from the washing clothes of being dried by process air.Traditionally, cotton linters filter is placed in the process air guider of radiator upstream to be used for catching the most of velveteen from described process air.But, still have little but quite most velveteen to escape the seizure of cotton linters filter, and be included in the condensate liquid coprecipitation that obtains from the moisture in the process air formed when processing air and extract heat on radiator.
Although each document in above-mentioned two documents relates to the household electrical appliance with process air guider, described process air guider is Self-Closing substantially, so that boot process air in the loop substantially closed, WO 2008/110449 A1 shows and a kind ofly has heat pump and have the household electrical appliance of the process air guider of fractional open.
According to document WO 2008/119608 A2 and WO 2008/086933 A1, except more conventional electricity or the combustor heater of gas gentle to except gas-heat exchanger, heat pump can be applied to household electrical appliance.This electrical equipment can be called as " mixture ".
According to document WO 2007/141166 A1, flow through radiator successively with the undivided process air of more conventional needs to compare with the convention of thermal source, thermal source and the radiator of the heat pump comprised by household electrical appliance can be arranged in the process air guider of bifurcated to make process air as parallel two parts airflow passes radiator and thermal source.
Because the heat pump of type of compressor determine hereinafter disclosed priority of the present invention time sold, with regard to they relate to the heat pump application of type of compressor is to household electrical appliance and also consistent with the convention of household electrical appliance of the heat pump with type of compressor with regard to, described heat pump is configured with its operation characteristic by size and the fixing parts of structure.This household electrical appliance are normally used in by the position of household electrical appliance and season of using in 1 year under the multiple environmental condition that limits.In addition, the normal use of this household electrical appliance itself also can cause various operation conditions.Such as, the startup stage that the operation with the scrubbing-and-drying unit of heat pump comprising, quasi-steady stage and finishing steps, wherein, in described startup stage, the parts of electrical equipment and they will will be taken to suitable running temperature by the clothing itself of drying; In the quasi-steady stage, perform most drying operation; In described finishing steps, described washing clothes almost by dry as required, and extract residual moisture from described washing clothes and needs to raise on the temperature that flows through the process air of described washing clothes to the temperature levels running through quasi-steady phase lasts.Therefore, need the layout finding heat pump to allow the operation of heat pump to run through these all stages, also adapt with environmental condition simultaneously.
Summary of the invention
The object of the invention is the improvement project proposing a kind of electrical equipment as limited in the preamble of the application, which overcoming pointed shortcoming.
Therefore, a kind of household electrical appliance are described according to the present invention, described household electrical appliance comprise Processing Room and process air guider, described Processing Room is for the treatment of article, described process air guider is used for boot process air through described Processing Room, described process air guider comprises air blast, heater and heat pump, described air blast is for driving process air, described heater is for heating described process air and being placed on the upstream of described Processing Room, wherein, described heater is thermal source, for heat is transported to described process air from the cold-producing medium cycling through described heat pump, and wherein, described heat pump also comprises radiator, compressor, expansion system and cold-producing medium guider, described radiator is used for heat to be transported to described cold-producing medium, described compressor is for compressing described cold-producing medium, described expansion system is for the described cold-producing medium that expands, described cold-producing medium guider is used in loop, make described refrigerant circulation through described heat pump.In addition, the sensor unit being connected to described expansion system control unit and being associated with described heat pump is set, to respond the signal that described sensor unit passes to described control unit, controls the constraint of described expansion system.And described sensor unit comprises ambient temp sensor, for sensing the temperature around described household electrical appliance, if described control unit is preset to environment temperature be substantially equal to given normal ambient temperature, be then constrained to rated value described in arranging; If environment temperature is different from described normal ambient temperature substantially, be then constrained to the value exceeding described rated value described in arranging.
According to the present invention, variable expansion system replaces the known expansion system with fixed dimension and structural parameters, to consider surrounding environment and the operation demand of Adaptive change, produces the household electrical appliance of flexible operation.
Effective operational factor of described expansion system is such constraint: described constraint is the pressure drop that produces as the described liquid refrigerant flowed through under rated temperature and nominal-mass flow and measured.When the expansion system be made up of single expander, on the one hand as the different embodiments of injector or aperture, the capillary of various length and various diameter can cause identical constraint on the other hand.Therefore, the present invention does not force the restriction of apriority to the CONSTRUCTED SPECIFICATION of described expansion system.But be to be noted that variable expansion system is irrelevant application known in electric refrigerator.
The present invention will make household electrical appliance adapt to the change of environment temperature, and normally run during to ensure the environment temperature changed between 5 ° to 35 °, wherein, 23 ° is rated temperature.In addition, by being modified for as the described hot pump characteristics given by the constraint of described expansion system can adapt in described electrical equipment in the change processing the operational factor occurred in the whole process of article, to make the setting of described heat pump and function distribution adapt to the service condition of being correlated with better, and thus obtain better operational efficiency and may be shorter duration of processing procedure.
According to a preferred embodiment of the invention, described household electrical appliance comprise the control unit of the sensor unit being connected to described expansion system and be associated with described heat pump, control the constraint of described expansion system for responding the signal conveying to described control unit by described sensor unit.Therefore, described expansion system can respond the relevant service condition of described heat pump and be controlled.In order to can and realize this control, provide multiple selection.As the first example, described expansion system can have by the controllable constraint of electronic installation.In this case, described control unit can be independent electronic circuit, or it can comprise in system control unit, described system control unit performs described electrical equipment overall control, to comprise with user alternately showing operation information, select for the treatment of the process article be placed in described electrical equipment working procedure and set the operational factor of this program.
According to the present invention, described sensor unit comprises the ambient temp sensor for detecting described electrical equipment environment temperature.This makes it possible to consider that described relevant ambient environmental conditions runs the described electrical equipment comprising described heat pump, and it also allows response surrounding environment to change operational mode.Because any heat pump all needs the large energy input of the operation for it, the energy of these inputs must be dissipated to its surrounding environment again, and described environment temperature is the functional parameter for described heat pump, because it affects this dissipation.According to the present invention, described environment temperature can illustrate that described heat pump runs.In this respect more preferably, if described environment temperature is substantially equal to given specified environment temperature, described control unit is preset to and described constraint is set to rated value, and wherein, if described environment temperature is different from described specified environment temperature substantially, described control unit is preset to and described constraint is set to the value exceeding described rated value.The preferred settings that can be provided for running is to be set to the specified constraint when specified environment temperature by described expansion system, described specified environment temperature can be the common environment temperature run in usual family, and in described specified constraint, increases described constraint when temperature is higher and low than described specified environment temperature around.When described environment temperature is too high, the thermal force on described heat pump is high, and the compressor in described heat pump may meet with very high thermic load.By increasing described constraint, the mass flow of the cold-producing medium of the usual described heat pump that circulates will be reduced, and reduce the load on described compressor simultaneously.When described environment temperature is too low, the thermic load on described heat pump is low.Conversely, may be difficult to when described cold-producing medium flows through described radiator determine that described cold-producing medium fully evaporates.By increasing described constraint and reducing the mass flow of circulating refrigerant by this, reduce the input quantity entering the liquid to be evaporated of described radiator, relax the problem determining fully evaporation by this.
According to the preferred embodiment of the present invention, the described sensor unit described in previous section comprises state sensor, for detecting the state of described heat pump.But more preferably, described state sensor is temperature sensor, for detecting the treatment temperature in described cold-producing medium guider.Remain preferred, described treatment temperature is the temperature of described cold-producing medium when leaving described radiator, and described control unit is preset to and controls described expansion system to keep given overheated when described cold-producing medium leaves described radiator.In such a case, it is to be noted, the normal operation of described electrical equipment comprises described radiator, wherein, described cold-producing medium enters described radiator with liquid condition, when flowing through described radiator, evaporation is to form gas, described gas by under given pressure condition, be heated to described cold-producing medium by the heat of some boiling temperature more than temperature.Difference definition temperature from described boiling temperature to described gaseous refrigerant when it leaves described radiator is overheated.The known heat pump be merged in the dry electrical equipment of described washing does not allow to carry out any control during drying course in its normal use.Like this, describedly overheatedly will to change when service condition changes.By applying the layout that exists here, comprising and controlling describedly overheatedly to remain on described overheated control that is given and value that is needs and become possibility.
According to a further advantageous embodiment of the invention, described sensor unit comprises the ambient temp sensor for detecting described electrical equipment environment temperature.This makes it possible to consider that described relevant ambient environmental conditions runs the described electrical equipment comprising described heat pump, and it also allows response surrounding environment to change operational mode.Because the large energy of the operation needed for it inputs by any heat pump, energy of these inputs must be dissipated to its surrounding environment again, and described environment temperature is the functional parameter for described heat pump, because it affects this dissipation.According to the present invention, described environment temperature can illustrate that described heat pump runs.In this respect more preferably, if described environment temperature is substantially equal to given specified environment temperature, described control unit is preset to and described constraint is set to rated value, and wherein, if described environment temperature is different from described specified environment temperature substantially, described control unit is preset to and described constraint is set to the value exceeding described rated value.The preferred settings that can be provided for running is to be set to the specified constraint when specified environment temperature by described expansion system, described specified environment temperature can be the common environment temperature run in usual family, and in described specified constraint, increases described constraint when temperature is higher and low than described specified environment temperature around.When described environment temperature is too high, the thermal force on described heat pump is high, and the compressor in described heat pump may meet with very high thermic load.By increasing described constraint, the mass flow of the cold-producing medium of the usual described heat pump that circulates will be reduced, and reduce the load on described compressor simultaneously.When described environment temperature is too low, the thermic load on described heat pump is low.Conversely, may be difficult to when described cold-producing medium flows through described radiator determine that described cold-producing medium fully evaporates.By increasing described constraint and reducing the mass flow of circulating refrigerant by this, reduce the input quantity entering the liquid to be evaporated of described radiator, relax the problem determining fully evaporation by this.
According to another preferred embodiment of the present invention, described expansion system comprises at least two expansion cells, and they can be joined in described cold-producing medium guider changeably by described control unit.This makes it possible to be applied between several fixed value for retraining and switches by simple the expansion system carrying out selecting.More preferably, described expansion system comprises expansion cell, and described expansion cell comprises the first expander and the controllable and valve be connected in series by described control unit.More preferably, described expansion system can comprise the second expander being connected to described expansion cell abreast.This embodiment guarantees the switching state occurring not cause described expansion system to be closed completely, provides the measure of security of operation by this.Remain more preferably, the expansion cell of multiple connection parallel to each other can be set in described expansion system, provide the n of described constraint variable spreading range by this, to improve the adaptability of described system to various operation demand.Still more preferably, described expansion cell comprises multiple first expander, and wherein, described first expander connects in parallel with each other by by the controllable Multi-path distribution valve of described control unit, simplifies described switching device shifter like this and keeps variational high level simultaneously.
Still according to a further advantageous embodiment of the invention, described expansion system is by the controllable variable expansion device of described control unit.As preferred embodiment, described expansion gear comprises variable expansion valve.Especially, described expansion valve is thermostatic expansion device.Remain more preferably, the related temperature sensor of described thermostatic expansion device tool, described temperature sensor is connected to described process air guider in the outlet of described Processing Room, for detecting the temperature of air when it leaves described Processing Room of described process air, and wherein, described thermostatic expansion device is arranged to relatively high constraint when described constraint being changed at high air temperature from the relatively low constraint when lower air temperatures.Further preferably, described expansion system is multiple thermostatic expansion devices, and wherein, and described thermostatic expansion device connects by by the controllable Multi-path distribution valve of described control unit in parallel with each other.
According to the present invention, the vario valve as expansion cell is preferred, although they may need to arrange Electronic Control, described Electronic Control can be independent unit or can be the part of electronic system control unit as explained above.But variable expansion device can be applied in the commercially available self-contained unit as comprising sensor and control device, to respond variable state to change constraint, described variable state is generally the temperature detected by described sensor device.In this respect, described sensor device can apply explained state sensor or ambient temp sensor above.In addition, by using this variable expansion device can realize other control model.For the purpose of preventing, it is pointed out that term " thermostatic expansion device " is familiar concerning one of ordinary skill in the art because this application of installation at freezer unit or refrigerator from controlling in refrigerant loop.
As an example, the typical drying course performed in the dry electrical equipment of common washing can be considered.After just starting, described drying course will start the heating period, and now, the parts being included in described process air loop are by its variations in temperature to runtime value, and the described article that will dry will be heated to the running temperature of rising.In order to keep the duration of described process short, need to keep described heat time heating time short.Therefore, relatively high constraint is needed to make the cold-producing medium in described thermal source obtain relatively high pressure in described expansion system, and then cause the condensation temperature of rising of described cold-producing medium, cause the temperature gap at cold-producing medium described in described thermal source and the rising between described process air, and cause the heat increased to be transported to subsequently in described process air.In addition, the high constrained flow of described cold-producing medium will reduce the quantity needing to evaporate in described radiator, and the synthesis cooling of the described process air of same reduction in described radiator.Once described parts have reached their respective running temperatures, just enter the quasi-steady stage of following after the described heating period.In the described quasi-steady stage, only there is little change in running temperature, and the constraint of described expansion system can be set to the rated value of reduction, and this will still depend on explained ambient environmental conditions above.When described drying course close at the end of, institute is wetly from the article surface evaporation that will dry, and the moisture remained must be drawn in the textile fabric being deep into forming articles.This adds extra load by described process, and this itself shows that described article, parts around them and the running temperature of described process air flowed out from their are in another temperature rise.Current temperature rises the finishing steps that indicate from described quasi-steady step transition to described drying course.This stage is general very of short duration, does not almost affect the overall duration of described drying course.But the constraint of increase will be conducive to the evaporating temperature of the cold-producing medium reduced in described radiator and improve extracting moisture from described process air.Therefore, and above ignoring, mention the expectation of described finishing steps, self-contained variable expansion device, or multiple such device, the distributing valve especially by response ambient conditions is selectable, can be applied in for this purpose on electrical equipment of the present invention.The function of this device will reduce the constraint to increasing temperature.If the requirement being particularly useful for described finishing steps also should be considered, also can work except the switchable expander described in detail above.
Remain according to another preferred embodiment of the present invention, process air guider in electrical equipment of the present invention is self-isolation substantially, to guide described process air in the loop substantially closed, provide the dryer of closed-loop dryer or condensation type to by this described electrical equipment.
Still according to another preferred embodiment of the invention, described radiator is placed on the cooler in described process air guider, for cooling described process air at described process air after the described Processing Room of described process air extraction moisture leaves, again conform to the characteristic of the dryer of condensation type.More preferably, described cooler has places its lower condensate collector, for the condensate liquid that the described process air within collecting from described cooler precipitates, to collect by the described moisture of the described article extraction of operation of electrical appliances of the present invention.
Remain according to another preferred embodiment of the present invention, described Processing Room is for overturning the rotatable cylinder placed and carry out the described article processed in it.
Accompanying drawing explanation
Further details of the present invention and advantage will show out from the description of preferred embodiment below, and described preferred embodiment is also shown in the view of accompanying drawing.Especially:
Fig. 1 display is embodied as scrubbing-and-drying unit and has the household electrical appliance of the expansion gear of variable bound;
Fig. 2 display has the first embodiment of the expansion gear of variable bound;
Fig. 3 display has the second embodiment of the expansion gear of variable bound;
Fig. 4 is as being merged into the variable expansion device had in the expansion gear of variable bound.
Detailed description of the invention
In the accompanying drawings, Fig. 1 shows a kind of household electrical appliance 1, and household electrical appliance 1 are presented as scrubbing-and-drying unit 1.Scrubbing-and-drying unit 1 comprises Processing Room 2, and Processing Room 2 is configured to cylinder 2, places by the article 3 of drying wherein, placed pieces washing articles 3 at present.For simplicity, the annex as door and driver as being usually associated with this cylinder 2 and details is not shown.Cylinder 2 can rotate around axis 4 and passes the process air of flowing for upset pieces washing articles 3 thus extract moisture from washing articles 3.Process air for drying washing articles 3 guides by processing air guider 5.Process air guider 5 comprises air blast 6, and air blast 6 drives described process air in the loop substantially closed.In this, " substantially close " and refer to that the pressure of process air guider 5 maintenance is substantially equal to the pressure of electrical equipment 1 surrounding environment, but surrounding environment is not sealed airtightly, without any functionally relevant leakage, such air exchanges between process air guider 5 and surrounding environment.Process air guider 5 comprises heater 7 or thermal source 7, and described process air was heated in the upstream that heater 7 or thermal source 7 are placed on cylinder 2 before entering cylinder 2 at process air.In the downstream of cylinder 2, process air guider 5 comprises cooler 8 or radiator 8, wherein, from the process air left after cylinder 2, extracts heat.Traditionally, process air guider 5 and can comprise miscellaneous part.Especially, temperature sensor and cotton linters filter can be had, but show for the sake of simplicity and not in FIG.
Thermal source 7 and radiator 8 are embodied as heat exchanger 7 and 8 so that hot with the process air exchange flowed through.Thermal source 7 and radiator 8 are also included within heat pump 7,8,9,10, in 11.This is by providing the heat recovering to extract from described process air to thermal source 7 by this hot-plug with pump, heat is transferred back in described process air in thermal source 7.But this heat pump process can not self be worked, but the input of extra energy must be needed to provide effect according to thermokinetics law, this process reduces significantly evaporates the wetly required energy of institute from the washing articles 3 be included in cylinder 2 and inputs.Heat pump 7,8,9,10,11 except comprising thermal source 7 and radiator 8, also comprises compressor 9, expansion system 10 and cold-producing medium guider 11, wherein, compressor 9 cycles through heat pump 7,8,9 for being compressed in loop, 10, the cold-producing medium of 11, expansion system 10 is used for causing the internal pressure in described circulating refrigerant to reduce, and cold-producing medium guider 11 guides described cold-producing medium when described refrigerant circulation.Select the multiple compounds that described cold-producing medium can be applicable to this object from known in the art and chemical composition.Described cold-producing medium especially can be the hydrocarbon (R290, the ASHRAE standard according to general) of picture propane, the mixture of the hydrocarbon fluoridized as R134a and R152a or these hydrocarbons fluoridized as R407C and R410A; The described compound indicated is according to general ASHRAE standard.Be in operation, described cold-producing medium leaves radiator 8 in a gaseous form, is directed to compressor 9 by cold-producing medium guider 11.Compressor 9 is by described for compression gaseous refrigerant and make it be forwarded to thermal source 7.In thermal source 7, thus Thermal release to the process air flowed through, and is condensed into liquid form by described cold-producing medium.After leaving thermal source 7, described liquid refrigerant flows through expansion system 10, and expansion system 10 is embodied as choke valve or constraint with knowing.Can be used as the most common form of device that expansion system 10 uses is capillary 10, that is a kind of suitable length but have the pipe of very small bore.Expansion system 10 is used for reducing the internal pressure of described liquid refrigerant.Subsequently, described cold-producing medium enters radiator 8 in liquid form, and absorbs heat from the process air flowed through.The heat absorbed in described liquid refrigerant will make described cold-producing medium flash to gas form, complete once complete cycle period like this.Because the internal pressure of the described cold-producing medium between thermal source 7 and radiator 8 is poor, the condensation of described cold-producing medium will occur in the temperature quite higher than its evaporation, as being used for the prerequisite of the heat pump process running described scrubbing-and-drying unit 1.
Completed by described process air and extract moisture from washing articles 3, and the moisture picked up by described process air will be extracted by from described process air in radiator 8.There, from described process air extraction heat, cause the humidity condensed being included in there in vapour form and the condensate liquid formed from described process air precipitation.This condensed fluid collection is in condensate liquid pipeline 12 and be transported to condensate collector 13.After the drying process has been completed, condensate collector 13 can be emptied, and dispose described condensate liquid in any applicable mode.
A specific features of the electrical equipment shown in Fig. 1 is, expansion system 10 has to limit and is used for the constraint of the flow velocity determining condensate liquid under setting pressure and temperature conditions, and described pressure and temperature is changed by the operation of special control unit 14.For this purpose, control unit 14 is connected to sensor unit 15,16, sensor unit 15,16 comprises state sensor 15 and surrounding temperature sensor 16, state sensor 15 is for determining the temperature of the described cold-producing medium when described cold-producing medium leaves radiator 8, and ambient temp sensor 16 determines the temperature around electrical equipment 1.According to the signal obtained from these sensors 15 and 16, the constraint of setting expansion system 10 to respond these signals, is changed heat pump 7,8,9,10, the operation conditions of 11 by control unit 14.
The expansion system 10 with variable bound allows electrical equipment 1 to adapt to multiple environment temperature, and to ensure to operate in suitably the environment temperature of change between 5 ° to 35 °, wherein, 23 ° is rated temperature.In addition, by changing by the given heat pump 6,7 of the constraint of expansion system 10,8,9,10, the characteristic of 11, can adapt to the change of the operational factor occurred in the whole process for the treatment of the article 3 in electrical equipment 1, to make heat pump 6,7,8,9,10, the setting of 11 and function distribution adapt to the service condition of being correlated with better, like this, obtain better operational efficiency and may be shorter duration of processing procedure.
State sensor 15 is temperature sensors 15, for detecting the treatment temperature in cold-producing medium guider.Described treatment temperature is the temperature of described cold-producing medium when leaving radiator 8, and control unit 14 is preset to, and to control expansion system 10 given overheated for keeping leaving in the cold-producing medium of radiator 8.In such a case, it is to be noted that the normal operation of electrical equipment 1 comprises radiator 8, wherein, described cold-producing medium enters radiator 8 with liquid condition, when described flow of refrigerant is through radiator 8, evaporation forms gas, described gas heats the heat of some under given pressure condition, reaches the temperature of more than the boiling temperature of described cold-producing medium.From described boiling temperature to being described overheated when described gaseous refrigerant by the difference definition of the temperature of described gaseous refrigerant when leaving radiator 8.Usually, described overheated when change service condition will change.By application as the layout in this display, comprise and controlling so that described the thermal control keeping the described overheated value at regulation and needs is possible.
Further, sensor unit 15,16 comprise ambient temp sensor 16, for detecting the environment temperature of electrical equipment 1.This can consider that the ambient conditions of being correlated with comprises heat pump 6,7,8,9,10, the electrical equipment 1 of 11 for running, and is also allowed for response ambient conditions change operational mode.When heat pump 6,7,8,9,10,11 when must need the input of a large amount of energy to run for it, and the input of described energy must be dissipated to again around it, and when described external temperature influence is to this dissipation, described environment temperature is the functional parameter for running.At present, at heat pump 6, in 7,8,9,10,11 operations, by the constraint being set in described expansion gear 10 place, described environment temperature can be described.Especially, if described environment temperature is substantially equal to given specified environment temperature, control unit 14 is preset to and described constraint is set as rated value, and if described environment temperature is substantially different from described specified environment temperature, control unit 14 is preset to the value being set as described constraint to exceed described rated value.The preferred settings that can be provided for running is to be set as specified constraint by expansion system 10 under the specified environment temperature of the usual environment temperature run in usual family, and temperature all will increase described constraint above and below during described specified environment temperature on described specified constraint around.When described environment temperature is too high, heat pump 6,7,8,9,10, the thermic load on 11 is high, and compressor 9 may suffer from exceedingly high thermic load.By increasing described constraint, cycle through heat pump 6,7,8,9,10, the mass flow of the cold-producing medium of 11 will reduce, and reduces the described load on compressor 9 simultaneously.When described environment temperature is low excessively, heat pump 6,7,8,9,10, the thermic load on 11 is low.This may be difficult to determine that described cold-producing medium fully evaporates when described cold-producing medium flows through described radiator 8.By increasing described constraint and reducing the mass flow of described refrigerant circulation by this, the input quantity being evaporated to the liquid of radiator 8 is reduced, and relaxes the problem determining fully evaporation by this.
As for the structure detail of expansion system 10 and control unit 14, the known convention of one of ordinary skill in the art provides multiple choices.Such as, expansion system 10 may be embodied as valve 10, and the constraint of valve 10 can be changed continuously by electronic installation.In this case, control unit 14 can be electronic circuit, described electronic circuit can operate independently independent of other parts of electrical equipment 1, or as an alternative, control unit 14 can be merged in electronic equipment control unit 17, the operation that electronic equipment control unit 17 is generally used for electrical equipment 1 controls, and selecting the program of predetermined drying and processing or default parameter about this program with receiving with suitable input equipment by the information shown about process, being used as the interface with user or operating personnel.For simplicity, display and input equipment are not shown.Convention also configures the self-contained unit comprising expansion system 10 and control unit 14, and such as, in the form of " thermostatic expansion device ", they are generally used in freezer unit and refrigerator.
Fig. 2 display comprises the example of the expansion system 10 of two expansion cells 18,19, the switching valve 19 that each described expansion cell comprises the first expander 18 (may be capillary 18) and is connected in series.The parallel connection of two expansion cells 18,19, and the second expander 20 is connected to two unit 18,19 abreast.Two switching valves 19 can be switched to from cut out by control unit 14 and to open, and provide 4 kinds of utilizable constraints altogether to be defined for as heat pump 7,8,9,10 illustrative in Fig. 1 like this, the operational factor of 11.
Fig. 3 display is used in the expansion system 10 substituted in the cold-producing medium guider 11 between thermal source 7 and radiator 8.And, expansion system 10 comprises expansion cell 18, each expansion cell 18 is made up of single expander 18, and all expanders 18 are connected to by the controllable distributing valve 21 of control unit 14, control unit 14 can be transferred as illustrative heat pump 7,8,9 in FIG selectively, 10, each expander 18 used in 11.
Fig. 4 display is merged into another example of the variable expansion system 10 in thermostatic expansion device.This device comprises the valve 10 of continuous variable, and the valve 10 of continuous variable is included in cold-producing medium guider 11.In addition, this device also comprises process air temperature sensor 22, and process air temperature sensor 22 is connected to the temperature detecting described process air when process air guider 5 leaves Processing Room 2 with box lunch described process air at present.Process air temperature sensor 22 at present only one be full of the sphere of working fluid 24, working fluid 24 be used for detecting described sphere expose the temperature at place.In principle, temperature sensor 22 can be placed on its operation and be regarded as any position useful to control vario valve 10.Temperature sensor 22 is connected to the room 14 as control unit 14.In room 14, moveable barrier film 23 will be full of described working fluid and separates with a part of room being full of air with the room of the internal circulation of sphere 22.Barrier film 23 contacts push rod 25, and push rod 25 is used for again setting the constraint of vario valve 10.When the temperature of described process air detects change at the exit sphere 22 of cylinder 2, working fluid 24 will expand or shrink and correspondingly moving regulator 23.This moves through push rod 25 and is delivered to vario valve 10 and causes the constraint of vario valve 10 to change the variations in temperature of the described process air of response.Therefore, the temperature of process air that response cylinder 2 exports, realizes heat pump 7,8,9,10, the adaptation of the operation of 11.
After just starting, typical drying course is performed in baker 1, heating period will be started, in the described heating period, be included in the parts 2,5 in process air loop, 6, their temperature is changed to runtime value from environment temperature by 7,8, and the article 3 that will dry will be heated to the running temperature of rising.In order to keep the time of described process lasts short, need to keep the time of heating short.Therefore, relatively high constraint is set to obtain the relatively high pressure of the cold-producing medium in thermal source 7 in expansion system 10, described pressure causes cold-producing medium to raise condensation temperature, obtain the temperature difference of the rising between the process air in described cold-producing medium and thermal source 7, and the heat reaching increase is transferred in described process air subsequently.In addition, the evaporation quantity that the flow of refrigerant being subject to high constraint will reduce in radiator 8, and reduce the synthesis cooling processing air in radiator 8 simultaneously.Once parts 2,5,6,7,8 have reached their respective running temperatures, in drying course, accurate plateau just will along with the described heating period.In described accurate plateau, only there is little change in running temperature, and the constraint of expansion system 10 can be set to the rated value of reduction, and this rated value still can depend on the ambient environmental conditions explained above this literary composition.At the end of described drying course reaches, wetly from the surface evaporation of the article 3 that will dry, and residual moisture must be drawn in the textile fabric being deep into forming articles 3.This adds extra load by described process, and this itself shows article 3, parts 2 around them and is in during another temperature rise from the running temperature of their described process air stream.Current temperature rises and indicates the finishing steps being transitioned into described drying course from described quasi-stationary state.Usually, this stage is very of short duration, does not almost affect the duration of described drying course entirety.But the constraint of increase will be conducive to the evaporating temperature of the cold-producing medium reduced in radiator 8 and improve extracting moisture from described process air.Because of this place, and above ignoring, mention the expectation of described finishing steps, self-contained variable expansion device 10, or multiple such device 10, the distributing valve 21 particularly by response ambient conditions is selectable, can apply on the electric appliance 1 for this purpose.The function of this device 10 will be reduce constraint when temperature rises.If the requirement being particularly useful for described finishing steps also should be considered, also can work except the switchable expander shown in Fig. 4.
As for the process air guider 5 in the described electrical equipment 1 described in detail here, it is Self-Closing to guide described process air in the loop substantially closed substantially, provides the dryer of loop dryer or condensation type therefore to electrical equipment 1.But this should not be considered to an enforceable feature.They will be led to the electrical equipment of another kind of type by novel feature disclosed herein well, wherein, described process air guider 5 itself is not self-isolation substantially, or in electrical equipment or even the realization parallel to each other of multiple process air guider.
In order to infer, follow as limit in the dependent claims with above-mentioned in detail and illustrate and the invention enables household electrical appliance, especially continuing of the processing procedure of the arrangement in this electrical equipment can be raised the efficiency and be used in scrubbing-and-drying unit and the inventive embodiments of heat pump that wherein comprises further.
Reference numerals list
1 household electrical appliance, scrubbing-and-drying unit
2 Processing Rooms, cylinder
3 want dry article, the clothing washed
4 rotating shafts
5 process air guiders
6 air blasts
7 heaters, thermal source
8 coolers, radiator
9 compressors
10 expansion systems
11 cold-producing medium guiders
12 condensate line
13 condensate collectors
14 expansion system control units
15 state sensors, refrigerant temperature sensors
16 ambient temp sensors
17 electrical control units
18 first expanders
19 switching valves
20 second expanders
21 distributing valves
22 process air temperature sensor
23 barrier films
24 working fluids
Claims (19)
1. household electrical appliance (1), comprise the Processing Room (2) for the treatment of article (3), for the process air guider (5) of boot process air by described Processing Room (2), described process air guider (5) comprises the air blast (6) for driving described process air, for heating described process air and being placed on heater (7) and the heat pump (7 of described Processing Room (2) upstream, 8, 9, 10, 11), wherein, described heater (7) is thermal source (7), for by heat from cycling through described heat pump (7, 8, 9, 10, 11) cold-producing medium is transported to described process air, and wherein, described heat pump (7, 8, 9, 10, 11) radiator (8) for heat being transported to described cold-producing medium is also comprised, for compressing the compressor (9) of described cold-producing medium, for the expansion system (10) of the described cold-producing medium that expands, described expansion system (10) has variable bound, for making described refrigerant circulation by described heat pump (7 in loop, 8, 9, 10, 11) cold-producing medium guider (11), be connected to described expansion system (10) and with described heat pump (7, 8, 9, 10, 11) sensor unit (15 be associated, 16) control unit (14), described control unit (14) is for responding by described sensor unit (15, 16) signal conveying to described control unit (14) controls the constraint of described expansion system (10), it is characterized in that,
Described sensor unit (15,16) ambient temp sensor (16) of the environment temperature for detecting described electrical equipment (1) is comprised, if described environment temperature is substantially equal to given specified environment temperature, described control unit (14) is preset to and described constraint is set to rated value, and if described environment temperature is different from described specified environment temperature substantially, described control unit (14) is preset to the value being set as described constraint to exceed described rated value.
2. household electrical appliance according to claim 1 (1), is characterized in that,
Described sensor unit (15,16) comprises state sensor (15), for detecting the state of described heat pump (7,8,9,10,11).
3. household electrical appliance according to claim 2, is characterized in that,
Described state sensor (15) is temperature sensor (15), for detecting the treatment temperature in described cold-producing medium guider (11).
4. household electrical appliance according to claim 3, is characterized in that,
Described treatment temperature is the temperature of the described cold-producing medium when described cold-producing medium leaves described radiator (8), and wherein, described control unit (14) is preset to and controls described expansion system (10) to keep given overheated in the described cold-producing medium leaving described radiator (8).
5. the household electrical appliance (1) according to any one in aforementioned claim, is characterized in that,
Described expansion system (10) comprises at least two expansion cells (18,19,21), and they can be joined in described cold-producing medium guider (11) changeably by described control unit (14).
6. household electrical appliance according to claim 5 (1), is characterized in that,
Described expansion cell (18,19,21) comprise the first expander (18) and by described control unit (14) can control and the valve be connected in series (21).
7. household electrical appliance according to claim 6 (1), is characterized in that,
Described household electrical appliance (1) comprise the second expander (20) being connected to described expansion cell (18,19,21) abreast.
8. the household electrical appliance (1) according to any one in claim 6 and 7, is characterized in that,
Described household electrical appliance (1) comprise multiple expansion cell (18,19,21) connected in parallel with each other.
9. the household electrical appliance (1) according to any one in claim 6 and 7, is characterized in that,
Described expansion cell (18,19,21) comprise multiple first expander (18), wherein, described first expander (18) connects by by described control unit (14) controllable Multi-path distribution valve (21) in parallel with each other.
10. the household electrical appliance (1) according to any one in Claims 1-4, is characterized in that,
Described expansion system (10) is by described control unit (14) controllable variable expansion device (10).
11. household electrical appliance according to claim 10 (1), is characterized in that,
Described expansion system (10) comprises variable expansion valve (10).
12. household electrical appliance according to claim 11 (1), is characterized in that,
Described expansion valve (10) is thermostatic expansion device (10).
13. household electrical appliance according to claim 12, is characterized in that,
Described thermostatic expansion device (10) has the temperature sensor (22) being connected to the association of described process air guider (5) in the outlet of described Processing Room (2), described temperature sensor (22) is for detecting the air themperature of described process air when it leaves described Processing Room (2), and wherein, described thermostatic expansion device (10) is arranged to relatively high constraint when described constraint being changed at high air temperature from the relatively low constraint when lower air temperatures.
14. household electrical appliance according to claim 10 (1), is characterized in that,
Described expansion system (10) is multiple thermostatic expansion devices (10), and wherein, described thermostatic expansion device (10) connects by by described control unit (14) controllable Multi-path distribution valve (21) in parallel with each other.
15., according to claim 11 to the household electrical appliance (1) described in any one in 13, is characterized in that,
Described expansion system (10) is multiple thermostatic expansion devices (10), and wherein, described thermostatic expansion device (10) connects by by described control unit (14) controllable Multi-path distribution valve (21) in parallel with each other.
16. household electrical appliance according to claim 1 (1), is characterized in that,
Described process air guider (5) is that self closes substantially.
17. household electrical appliance according to claim 16 (1), is characterized in that,
Described radiator (8) is cooler (8), described cooler (8) is placed in described process air guider (5), for cooling described process air with from described process air extraction moisture after described process air leaves described Processing Room.
18. household electrical appliance according to claim 17, is characterized in that,
Described cooler (8) has places its lower condensate collector (13), for the condensate liquid that collection precipitates from the described process air in described cooler (8).
19. household electrical appliance according to claim 1 (1), is characterized in that,
Described Processing Room (2) is rotatable cylinder (2), for overturning the described article (3) that placement is wherein carried out processing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP200931159 | 2009-12-14 | ||
| ES200931159A ES2373135B1 (en) | 2009-12-14 | 2009-12-14 | DOMESTIC APPLIANCE THAT INCLUDES AN EXPANSION SYSTEM. |
| PCT/EP2010/068074 WO2011072999A2 (en) | 2009-12-14 | 2010-11-24 | Household appliance comprising an expansion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102656314A CN102656314A (en) | 2012-09-05 |
| CN102656314B true CN102656314B (en) | 2015-08-26 |
Family
ID=44059028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080056724.8A Expired - Fee Related CN102656314B (en) | 2009-12-14 | 2010-11-24 | Comprise the household electrical appliance of expansion system |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2513368B1 (en) |
| CN (1) | CN102656314B (en) |
| ES (1) | ES2373135B1 (en) |
| PL (1) | PL2513368T3 (en) |
| WO (1) | WO2011072999A2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011078922A1 (en) * | 2011-07-11 | 2013-01-17 | BSH Bosch und Siemens Hausgeräte GmbH | Exhaust air drying with additional heating and heat exchanger unit |
| EP2586906B1 (en) * | 2011-10-25 | 2020-06-24 | Electrolux Home Products Corporation N.V. | A laundry dryer with a heat pump system |
| EP2586905B1 (en) * | 2011-10-25 | 2020-07-22 | Electrolux Home Products Corporation N.V. | A laundry dryer with a heat pump system |
| KR102009278B1 (en) | 2012-10-22 | 2019-08-09 | 엘지전자 주식회사 | A clothes dryer having a expansion valve which is variable according to the driving mode |
| CN104695193A (en) * | 2015-02-12 | 2015-06-10 | 珠海格力电器股份有限公司 | Heat pump clothes dryer and control method thereof |
| DE102015203682A1 (en) | 2015-03-02 | 2016-09-08 | BSH Hausgeräte GmbH | Dryer with a heat pump with variable refrigerant mass and method for its operation |
| PL3379992T3 (en) | 2015-11-24 | 2020-05-18 | BSH Hausgeräte GmbH | Household appliance with a heat pump and method for operating a household appliance |
| EP3173009A1 (en) | 2015-11-24 | 2017-05-31 | BSH Hausgeräte GmbH | Household appliance with a heat pump and method for operating a household appliance |
| DE102018201257A1 (en) | 2018-01-29 | 2019-08-01 | BSH Hausgeräte GmbH | Apparatus for drying laundry and method for operating a heat pump of such apparatus |
| DE102019207225A1 (en) | 2019-05-17 | 2020-11-19 | BSH Hausgeräte GmbH | Apparatus for drying laundry and a method for operating a heat pump of such an apparatus |
| DE102020206823A1 (en) * | 2020-06-02 | 2021-12-02 | BSH Hausgeräte GmbH | HOUSEHOLD APPLIANCE, IN PARTICULAR LAUNDRY DRYERS, WITH A HEAT PUMP INCLUDING AN EXPANSION DEVICE |
| EP3952032A1 (en) | 2020-08-07 | 2022-02-09 | BSH Hausgeräte GmbH | Electrical machine including contact elements forming a terminal |
| DE102020214559A1 (en) | 2020-11-19 | 2022-05-19 | BSH Hausgeräte GmbH | HOUSEHOLD APPLIANCE WITH A HEAT PUMP COMPRISING A CONTROLLABLE VALVE |
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- 2010-11-24 WO PCT/EP2010/068074 patent/WO2011072999A2/en active Application Filing
- 2010-11-24 CN CN201080056724.8A patent/CN102656314B/en not_active Expired - Fee Related
- 2010-11-24 EP EP10782275.1A patent/EP2513368B1/en not_active Not-in-force
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102656314A (en) | 2012-09-05 |
| WO2011072999A2 (en) | 2011-06-23 |
| PL2513368T3 (en) | 2016-10-31 |
| ES2373135B1 (en) | 2012-12-13 |
| EP2513368A2 (en) | 2012-10-24 |
| ES2373135A1 (en) | 2012-01-31 |
| WO2011072999A3 (en) | 2011-08-18 |
| EP2513368B1 (en) | 2016-04-20 |
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