CN102656314A

CN102656314A - Household appliance comprising an expansion system

Info

Publication number: CN102656314A
Application number: CN2010800567248A
Authority: CN
Inventors: P·巴勒迪阿斯皮利奎塔; I·奥特洛加西亚; R·圣马丁桑乔
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2009-12-14
Filing date: 2010-11-24
Publication date: 2012-09-05
Anticipated expiration: 2030-11-24
Also published as: WO2011072999A3; ES2373135B1; CN102656314B; ES2373135A1; EP2513368A2; WO2011072999A2; PL2513368T3; EP2513368B1

Abstract

The invention relates to a household appliance (1) comprising a treatment chamber (2) for treating articles (3), a process air guide (5) for guiding process air through said treatment chamber (2), said process air guide (5) comprising a blower (6) for driving the process air, a heater (7) for heating the process air and placed upstream of said treatment chamber (2), and a heat pump (7, 8, 9, 10, 11), wherein said heater (7) is a heat source (7) for transferring heat from a refrigerant circulating through said heat pump (7, 8, 9, 10, 11) to the process air, and wherein said heat pump (7, 8, 9, 10, 11) further comprises a heat sink (8) for transferring heat into the refrigerant, a compressor (9) for compressing the refrigerant, an expansion system (10) for expanding the refrigerant, and a refrigerant guide (11) for circulating the refrigerant through said heat pump (7, 8, 9, 10, 11); in a closed circuit. Said expansion system (10) has a variable restriction which may be controllable by a control unit (14) in response to signals from a sensor unit (15, 16).

Description

The household electrical appliance that comprise expansion system

Technical field

The present invention relates to a kind of household electrical appliance; Said household electrical appliance comprise the Processing Room that is used to handle article, are used for the processing air guide device that the boot process air passes said article Processing Room; Said processing air guide device comprises the air blast that is used to drive said processing air, heater and the heat pump that is used to heat said processing air and is placed on the upper reaches of said Processing Room; Wherein, Said heater is a thermal source; Be used for heat is transported to said processing air from the cold-producing medium that cycles through said heat pump, wherein, said heat pump further comprises and is used for heat is transported to the expansion system of the radiator of said cold-producing medium, the compressor that is used to compress said cold-producing medium, the said cold-producing medium that is used to expand and is used for making said cold-producing medium cycle through the cold-producing medium guider of said heat pump in the closed-loop path.

Background technology

The household electrical appliance of this universal class are disclosed in WO 2008/107266A1.This application discloses a kind of family expenses scrubbing-and-drying unit, and the heat pump of said scrubbing-and-drying unit is the heat pump of type of compressor, it is characterized in that having the cold-producing medium that in the cold-producing medium guider of sealing, is directed to.To absorb heat in the related radiator in order being implemented in, said cold-producing medium to be evaporated in said radiator, and from the thermal source of said association released heat, said cold-producing medium is liquefied in said thermal source.In order to realize hot propagation and to make said evaporation and liquefaction process occur in suitable temperature; When said gaseous refrigerant during from said heat sink to said thermal source; Said gaseous refrigerant is compressed; And when said cold-producing medium when said thermal source turns back to said radiator, said liquid refrigerant expands in expansion system.According to the document of being quoted, the compressor that concrete selection is made up of said heat pump and said cold-producing medium.

A kind of cleaning device that in scrubbing-and-drying unit, cleans the radiator of heat pump is disclosed in document WO 2008/119611A1.Radiator in the scrubbing-and-drying unit can degenerate operation owing to comprise the small particle of fibre debris etc., and these small particles are commonly referred to the end of a thread or velveteen, and are to extract from the washing clothes of being dried by the processing air.According to convention, cotton linters filter is placed in the processing air guide device at the radiator upper reaches to be used for catching the most of velveteen from said processing air.But, still have little but quite most velveteen is escaped the seizure of cotton linters filter, and from handle air, extract condensate liquid coprecipitation that the airborne moisture of processing that forms when hot obtains to radiator with being included in.

Although all relating to, each document in above-mentioned two documents has the household electrical appliance of handling the air guide device; Said processing air guide device is that self seals basically; So that boot process air in the loop of sealing basically, WO 2008/110449A1 show a kind of household electrical appliance that have heat pump and have the open processing air guide device of part.

According to document WO 2008/119608A2 and WO 2008/086933A1, gentle to the gas-heat exchanger except burner heater electricity more commonly used or gas, heat pump can be applied to household electrical appliance.This electrical equipment can be called as " mixture ".

According to document WO 2007/141166A1; Compare with flow through the successively convention of radiator and thermal source of the undivided processing air of needs more commonly used, the thermal source of the heat pump that comprises by household electrical appliance and radiator can be arranged in the processing air guide device of bifurcated in case feasible processing air as parallel two parts airflow passes radiator and thermal source.

Because the heat pump of type of compressor has been sold when confirming hereinafter disclosed priority of the present invention; With regard to they relate to the heat pump application of type of compressor to household electrical appliance and also consistent with the convention of the household electrical appliance of heat pump with type of compressor with regard to, said heat pump disposes its operation characteristic by size and the fixing parts of structure.This household electrical appliance are normal to be used under the multiple environmental condition that limits the season the position of household electrical appliance and use in a year.In addition, the normal use of this household electrical appliance itself also can cause various operation conditions.For example, the startup stage that the operation with scrubbing-and-drying unit of heat pump will comprising, quasi-steady stage and termination stage, wherein, said the startup stage in, the parts of electrical equipment will take them to suitable running temperature with the clothing itself that will be dried; In stage, carry out most drying operation at quasi-steady; In said termination in the stage; Said washing clothes is almost by dry as needs, and extracts residual moisture from said washing clothes and need raise and flow through the temperature of processing air of said washing clothes to running through on the temperature levels that the quasi-steady stage continues.Therefore, the layout that needs to find heat pump allows the operation of heat pump to run through these all stages, also adapts with environmental condition simultaneously.

Summary of the invention

The objective of the invention is to propose the improvement project of the electrical equipment that limits in a kind of preamble like the application, it has overcome pointed shortcoming.

In order to achieve this end and other purposes, a kind of household electrical appliance in appended independent claims, have been narrated.In Rights attached thereto requirement and description subsequently, narrated preferred embodiment according to household electrical appliance of the present invention.

Therefore, narrate a kind of household electrical appliance according to the present invention, said household electrical appliance comprise Processing Room and handle the air guide device; Said Processing Room is used to handle article, and said processing air guide device is used for the boot process air and passes said Processing Room, and said processing air guide device comprises air blast, heater and heat pump; Said air blast is used for driving handles air, the upper reaches that said heater is used to heat said processing air and is placed on said Processing Room, wherein; Said heater is a thermal source; Be used for heat is transported to said processing air from the cold-producing medium that cycles through said heat pump, and wherein, said heat pump also comprises radiator, compressor, expansion system and cold-producing medium guider; Said radiator is used for heat is transported to said cold-producing medium; Said compressor is used to compress said cold-producing medium, and the said expansion system said cold-producing medium that is used to expand, said cold-producing medium guider are used for making said cold-producing medium circulation pass said heat pump at loop.In addition, said expansion system has variable bound.

According to the present invention, the variable expansion system replaces the known expansion system with fixed dimension and structural parameters, so that consider surrounding environment and the operation demand that adapts to variation, produces the household electrical appliance of flexible operation.

Effective operational factor of said expansion system is constraint, and said constraint is the pressure decline that produces as the said liquid refrigerant of under rated temperature and nominal-mass flow, flowing through and measured.Under the situation of the expansion system that is made up of single expander, as the different embodiment of injector or aperture, the capillary of all lengths and various diameters can cause identical constraint on the other hand on the one hand.Therefore, the present invention does not force the restriction of apriority to the CONSTRUCTED SPECIFICATION of said expansion system.But be to be noted that the variable expansion system is irrelevant application known in electric refrigerator.

The present invention will make household electrical appliance adapt to the variation of environment temperature, normally move when 5 ° of environment temperatures that between 35 °, change guaranteeing, wherein, 23 ° is rated temperature.In addition; Through being modified for the variation that can adapt to the operational factor that in said electrical equipment, in the whole process of handling article, takes place for characteristic by the given said heat pump of the constraint of said expansion system; So that make the setting of said heat pump adapt to relevant service condition better, and thereby obtain duration of better operational efficiency and processing procedure that maybe be shorter with function distribution.

According to a preferred embodiment of the invention; Said household electrical appliance comprise be connected to said expansion system and with the control module of the sensor unit of said associated with heat pump, be used to respond the constraint that conveys to the said expansion system of signal controlling of said control module by said sensor unit.Therefore, said expansion system can respond the relevant service condition of said heat pump and controlled.In order and to realize this control, provide a plurality of selections.As first instance, said expansion system can have by the controllable constraint of electronic installation.In this case; Said control module can be independent electronic circuit; Perhaps it can comprise in the system control unit; Said system control unit is carried out said electrical equipment and is totally controlled, and comprises with the user being used for handling the working procedure of the processing article that are placed into said electrical equipment and the operational factor of setting this program with demonstration operation information, selection alternately.

The preferred embodiment according to the present invention, the said sensor unit of narrating in the chapters and sections in front comprises state sensor, is used to detect the state of said heat pump.Yet more preferably, said state sensor is a temperature sensor, is used to detect the treatment temperature in the said cold-producing medium guider.Remain preferred, said treatment temperature is the temperature of said cold-producing medium when leaving said radiator, and said control module is preset to the said expansion system of control when said cold-producing medium leaves said radiator, to keep given overheated.Under this environment; It is to be noted; The normal operation of said electrical equipment comprises said radiator, and wherein, said cold-producing medium gets into said radiator with liquid state; Evaporation to be forming gas when flowing through said radiator, and said gas will be in the temperature more than the boiling temperature that is heated to said cold-producing medium under the given pressure condition by the heat of some.It is overheated to be defined as from said boiling temperature to the difference the temperature of said gaseous refrigerant when it leaves said radiator.The known heat pump that merges in the dry electrical equipment of said washing does not allow to carry out any control in the normal use at it during the drying course.Like this, said overheated will when service condition changes, changing.Through using the layout that exists here, comprise the said overheated given said overheated control possibility that becomes that remains on of control with values needs.

According to a further advantageous embodiment of the invention, said sensor unit comprises the ambient temp sensor that is used to detect said electrical equipment environment temperature.This makes it possible to consider that said relevant ambient environmental conditions moves the said electrical equipment that comprises said heat pump, and it also allows to respond surrounding environment and changes operational mode.Because any heat pump is used for needs the significant amount of energy input of its operation, the energy of these inputs must be dissipated to its surrounding environment again, and said environment temperature is the functional parameter that is used for said heat pump, because it influences this dissipation.According to the present invention, said environment temperature can explain that said heat pump moves.In this respect more preferably; If said environment temperature is substantially equal to given specified environment temperature; Said control module is preset to said constraint is set to rated value; And wherein, if said environment temperature is different from said specified environment temperature basically, said control module is preset to said constraint is set to the value that surpasses said rated value.The preferred settings that can be provided for moving is so that be set to the specified constraint when the specified environment temperature with said expansion system; Said specified environment temperature can be the common environment temperature that in common family, runs into, and the said constraint of increase in said specified constraint when temperature is high and lower than said specified environment temperature around.When said environment temperature was too high, the thermal force on the said heat pump was high, and the compressor in the said heat pump possibly meet with very high thermic load.Through increasing said constraint, will reduce the mass flow of the cold-producing medium of the common said heat pump of circulation, and reduce the load on the said compressor simultaneously.Cross when low when said environment temperature, the thermic load on the said heat pump is low.Conversely,, said cold-producing medium may be difficult to confirm that said cold-producing medium fully evaporates when flowing through said radiator.Through increasing said constraint and reducing the mass flow of circulating refrigerant by this, reduce the input quantity of the liquid to be evaporated that gets into said radiator, relax by this and confirm the fully problem of evaporation.

According to another preferred embodiment of the present invention, said expansion system comprises at least two expansion cells, and they can join in the said cold-producing medium guider through said control module changeably.This makes it possible to be applied in the expansion system of selecting through simple switching between several fixed values that are used to retrain.More preferably, said expansion system comprises expansion cell, and said expansion cell comprises first expander and valve controllable by said control module and that be connected in series.More preferably, said expansion system can comprise second expander that is connected to said expansion cell abreast.This embodiment guarantees to take place the switching state that do not cause said expansion system to be closed fully, and the measure of security of operation is provided by this.Remain more preferably, the expansion cell of a plurality of parallel connections can be set in said expansion system, n variable spreading range of said constraint is provided by this, so that improve the adaptability of said system to various operation demands.Still more preferably, said expansion cell comprises a plurality of first expanders, and wherein, said first expander connects through by the controllable multichannel distributing valve of said control module in parallel with each other, simplifies said switching device shifter like this and keeps variational high value simultaneously.

Still according to a further advantageous embodiment of the invention, said expansion system is by the controllable variable expansion device of said control module.As preferred embodiment, said expansion gear comprises variable expansion valve.Especially, said expansion valve is the thermostatic expansion device.Remain more preferably; Said thermostatic expansion device has related temperature sensor; Said temperature sensor is connected to said processing air guide device in the outlet of said Processing Room; Be used to detect the temperature of air when it leaves said Processing Room of said processing air, and wherein, said thermostatic expansion device is arranged to the relatively low constraint of said constraint when temperature is spent in the low latitude changed to the high relatively constraint when the high air temperature.Further preferably, said expansion system is a plurality of thermostatic expansion devices, and wherein, and said thermostatic expansion device connects through by the controllable multichannel distributing valve of said control module in parallel with each other.

According to the present invention, the vario valve that is used as expansion cell is preferred, though they possibly be provided with Electronic Control, said Electronic Control can be independent unit or can be the part like the electronic system control module of top explanation.Yet variable expansion device can be applied in the self-contained unit that commercially available conduct comprises sensor and control device, changes constraint so that respond variable state, and said variable state generally is the temperature that is detected by said sensor device.In this respect, said sensor device can be used top state sensor or the ambient temp sensor of explaining.In addition, through 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 with one of ordinary skill in the art, because this device is applied in the Self Control refrigerant loop of freezer unit or refrigerator.

As an example, can consider the typical drying course in the dry electrical equipment of common washing, carried out.After just starting, said drying course will begin the heating period, and at this moment, the parts that are included in said processing air loop arrive runtime value with its variations in temperature, and the said article that will dry will be heated to the running temperature of rising.In order to keep the duration weak point of said process, need to keep said heat time heating time short.Therefore; In said expansion system, need high relatively constraint so that make the cold-producing medium in the said thermal source obtain high relatively pressure; And then cause the condensation temperature of the rising of said cold-producing medium; Cause the temperature gap of the rising between cold-producing medium described in the said thermal source and said processing air, and the heat that causes increasing is transported to subsequently in the said processing air.In addition, the high constrained flow of said cold-producing medium will reduce the quantity that in said radiator, needs evaporation, and reduce the synthetic cooling of said processing air in said radiator equally.In case said parts have reached their running temperatures separately, just got into the quasi-steady stage of following in said heating period back.In the said quasi-steady stage, little variation only takes place in running temperature, and the constraint of said expansion system can be set to the rated value that reduces, the ambient environmental conditions that this will explain above will still depending on.When said drying course when finishing, institute is wetly evaporates from the article surface that will dry, and residual moisture must be drawn from being deep in the textile fabric of processing article.This is adding extra load on said process, this itself shows said article, is in another time temperature rises in the running temperature of parts around them and the said processing air that flows out from their.Current temperature rises and is indicating the termination stage from said quasi-steady step transition to said drying course.This stage is generally very of short duration, to the almost not influence of whole duration of said drying course.Yet the constraint of increase will help reducing the evaporating temperature of the cold-producing medium in the said radiator and improving and from said processing air, extract moisture.Therefore, and mention the expectation in said termination stage above ignoring, self-contained variable expansion device, perhaps a plurality of such devices, especially selectable through the distributing valve of response ambient conditions, can be applied in for this purpose on the electrical equipment of the present invention.The function of this device will reduce increasing the constraint of temperature.Also should consider if be particularly useful for the requirement in said termination stage, also be can be acting except that the switchable expander of top detailed description.

Remain according to another preferred embodiment of the present invention; Processing air guide device in the electrical equipment of the present invention is self-isolation basically; So that the said processing air of guiding in the loop of sealing basically provides the dryer of loop formula dryer or condensation type for by this said electrical equipment.

Still according to another preferred embodiment of the invention; Said radiator is placed on the cooler in the said processing air guide device; Be used for after said processing air extracts moisture from said processing air said Processing Room leaves, cooling off said processing air, conform to the characteristic of the dryer of condensation type once more.More preferably, said cooler has the condensate collector of placing under it, is used to the condensate liquid of the said processing air deposition within said cooler of collecting, so that collect the said moisture by the said article extraction of electrical equipment operation of the present invention.

Remain according to another preferred embodiment of the present invention, said Processing Room is to be used to overturn place the rotatable cylinder of the said article of handling in it.

Description of drawings

Further details of the present invention and advantage will show out that said preferred embodiment is also shown in the view of accompanying drawing from the description of following preferred embodiment.Especially:

Fig. 1 shows the household electrical appliance that are embodied as scrubbing-and-drying unit and have the expansion gear of variable bound;

Fig. 2 shows first embodiment of the expansion gear with variable bound;

Fig. 3 shows second embodiment of the expansion gear with variable bound;

Fig. 4 is as the variable expansion device that merges in the expansion gear with variable bound.

The specific embodiment

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 the article 3 that will be dried therein, has placed several washing articles 3 at present.For simplicity, do not show as the picture door that is associated with this cylinder 2 usually and the annex and the details of driver.Thereby cylinder 2 can pass mobile processing air with several the washing articles 3 that are used to overturn around axis 4 rotation and extract moistures from washing articles 3.The processing air that is used to dry washing articles 3 is by handling 5 guiding of air guide device.Handle air guide device 5 and comprise air blast 6, air blast 6 drives said processing air in the loop of sealing basically.In this; " seal basically " and be meant that the pressure of handling 5 maintenances of air guide device is substantially equal to the pressure of electrical equipment 1 surrounding environment; But surrounding environment is not sealed airtightly; Have no leakage relevant on the function, air exchanges between processing air guide device 5 and surrounding environment like this.Handle air guide device 5 and comprise heater 7 or thermal source 7, heater 7 or thermal source 7 are placed on the upper reaches of cylinder 2 before handling air entering cylinder 2, to heat said processing air.In the downstream of cylinder 2, handle air guide device 5 and comprise cooler 8 or radiator 8, wherein, extract heat the processing air after leaving cylinder 2.According to convention, handle air guide device 5 and can comprise miscellaneous part.Especially, can have temperature sensor and cotton linters filter, but in Fig. 1, for the sake of simplicity and not show.

Thermal source 7 is embodied as

heat exchanger

7 and 8 so that hot with the processing air exchange of flowing through with radiator 8.Thermal source 7 is also included within

heat pump

7,8 with radiator 8, in 9,10,11.This heat through providing recovery from said processing air, to extract to thermal source 7 this hot-plug with pump, heat is transferred back in thermal source 7 in the said processing air.But this heat pump is handled and can not self be worked, but must need extra energy input so that according to the thermokinetics law effect is provided, and this processing reduces the wetly energy needed input of washing articles 3 evaporations institute from be included in cylinder 2 significantly.

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, and wherein, compressor 9 is used for being compressed in loop and cycles through heat pump 7; 8,9,10; 11 cold-producing medium, expansion system 10 are used for causing that the internal pressure in the said circulating refrigerant reduces, and cold-producing medium guider 11 guides said cold-producing medium at said cold-producing medium circulation time.Said cold-producing medium can be selected from multiple compound that is applicable to this purpose known in the art and chemical composition.Said cold-producing medium especially can be the hydrocarbon (R290 is according to general ASHRAE standard) of picture propane, as the hydrocarbon of fluoridizing of R134a and R152a perhaps as the mixture of these hydrocarbons of fluoridizing of R407C and R410A; The said compound that indicates is according to general ASHRAE standard.Be in operation, said cold-producing medium leaves radiator 8 with gaseous form, is directed to compressor 9 through cold-producing medium guider 11.Compressor 9 will compress said gaseous refrigerant and make it be forwarded to thermal source 7.In thermal source 7, said cold-producing medium is discharged into the processing air of flowing through with heat, and thereby is condensed into liquid form.After leaving thermal source 7, the said liquid refrigerant expansion system 10 of flowing through, expansion system 10 are embodied as choke valve or constraint with knowing.The most common form that can be used as the device that expansion system 10 uses is a capillary 10, that is to say a kind of suitable length but has the very pipe of small bore.Expansion system 10 is used for reducing the internal pressure of said liquid refrigerant.Subsequently, said cold-producing medium gets into radiator 8 with liquid form, and from the processing air of flowing through, absorbs heat.The heat that absorbs in the said liquid refrigerant will make said cold-producing medium flash to gas form, accomplish the cycle period of one whole like this.Because the internal pressure of said cold-producing medium between thermal source 7 and radiator 8 is poor, the condensation of said cold-producing medium will occur in than in the quite high temperature of its evaporation, the prerequisite of handling as the heat pump that is used for moving said scrubbing-and-drying unit 1.

From washing articles 3, extract moisture by said processing air completion, and in radiator 8, will from said processing air, be extracted by the moisture that said processing air picks up.There, extract heat, cause with vapor form to be included in humidity condensed there and to form the condensate liquid that precipitates from said processing air from said processing air.This condensate liquid is collected in the condensate liquid pipeline 12 and is transported to condensate collector 13.After drying course is accomplished, can empty condensate collector 13, and dispose said condensate liquid with any suitable mode.

One of electrical equipment shown in Fig. 1 specifically is characterised in that, expansion system 10 has to limit and is used for the constraint of under setting pressure and the temperature conditions flow velocity of definite condensate liquid, and said pressure and temperature is through the operation variation of special-purpose control module 14.For this purpose; Control module 14 is connected to

sensor unit

15,16;

Sensor unit

15,16 comprises state sensor 15 and temperature sensor 16 on every side; State sensor 15 is used for confirming the temperature of said cold-producing medium when said cold-producing medium leaves radiator 8, and ambient temp sensor 16 is confirmed the temperature around the electrical equipment 1.According to the signal that from these

sensors

15 and 16, obtains, control module 14 will be set the constraint of expansion system 10 so that respond these signals, change

heat pump

7,8,9,10,11 operation conditions.

Expansion system 10 with variable bound allows electrical equipment 1 to adapt to multiple environment temperature, and to guarantee the operating in environment temperature that changes between 5 ° to 35 ° suitably, wherein, 23 ° is rated temperature.In addition, through changing by the given

heat pump

6,7,8 of the constraint of expansion system 10; 9,10,11 characteristic can adapt to the change of the operational factor that the whole process at the article 3 that are used for handling 1 li in electrical equipment takes place; So that make

heat pump

6,7,8,9; 10,11 setting adapts to relevant service condition better with function distribution, like this, obtains the duration of better operational efficiency and processing procedure that maybe be shorter.

State sensor 15 is temperature sensors 15, is used to detect the treatment temperature in the cold-producing medium guider.Said treatment temperature is the temperature of said cold-producing medium when leaving radiator 8, and control module 14 is preset to control expansion system 10 with given overheated of the cold-producing medium that is used for keeping leaving radiator 8.Under this environment; It is to be noted that the normal operation of electrical equipment 1 comprises radiator 8; Wherein, said cold-producing medium gets into radiator 8 with liquid condition, and evaporation forms gas when said cold-producing medium is flowed through radiator 8; Said gas heats the heat of some under given pressure condition, reach the above temperature of boiling temperature of said cold-producing medium.It is said overheated that the difference of the temperature from said boiling temperature to the said gaseous refrigerant when said gaseous refrigerant will leave radiator 8 is defined as.Usually, saidly overheatedly changing under the situation of service condition and will change.Through using as in the layout of this demonstration, it is possible comprising control so that keep said the thermal control of said overheated value at regulation and needs.

Further,

sensor unit

15,16 comprises ambient temp sensor 16, is used to detect the environment temperature of electrical equipment 1.This can consider that the ambient conditions of being correlated with is used for operation and comprises

heat pump

6,7,8,9,10,11 electrical equipment 1, and also allow to be used to respond ambient conditions change operational mode.When

heat pump

6,7,8,9,10,11 must need lot of energy input to be used for its operation the time, and said energy input must be dissipated to again around it, and when said external temperature influence during to this dissipation, said environment temperature is the functional parameter that is used to move.At present, at

heat pump

6,7,8,9,10,11 in servicely can explain said environment temperature through the constraint that is set in said expansion gear 10 places.Especially; If said environment temperature is substantially equal to given specified environment temperature; Control module 14 is preset to said constraint is set at rated value; And if said environment temperature is different with said specified environment temperature basically, control module 14 is preset to said constraint is set at the value that surpasses said rated value.The preferred settings that can be provided for moving is so that be set at specified constraint with expansion system 10 under the specified environment temperature of the common environment temperature that in common family, runs into, and all will on said specified constraint, increase said constraint when temperature is above and below said specified environment temperature around.When said environment temperature is too high,

heat pump

6,7, the thermic load on 8,9,10,11 is high, and compressor 9 possibly suffer from exceedingly high thermic load.Through increasing said constraint, cycle through

heat pump

6,7, the mass flow of 8,9,10,11 cold-producing medium will reduce, and reduces the said load on the compressor 9 simultaneously.When said environment temperature is low excessively,

heat pump

6,7, the thermic load on 8,9,10,11 is low.This possibly be difficult to confirm that said cold-producing medium fully evaporates when said cold-producing medium flows through said radiator 8.Through increasing said constraint and reducing the mass flow that said cold-producing medium circulates by this, the input quantity that is evaporated to the liquid of radiator 8 is reduced, and relaxes by this and confirms the fully problem of evaporation.

As for the structure detail of expansion system 10 and control module 14, the known convention of one of ordinary skill in the art provides multiple choices.For example, expansion system 10 may be embodied as valve 10, and the constraint of valve 10 can be changed by electronic installation continuously.In this case; Control module 14 can be an electronic circuit; Said electronic circuit can be independent of other parts of electrical equipment 1 to be operated independently; Perhaps alternatively, control module 14 can merge in the electronic equipment control module 17, and electronic equipment control module 17 is generally used for the operation control of electrical equipment 1; And, be used as interface with user or operating personnel through showing relevant information processed and receiving program that the oven dry selecting to be scheduled to suitable input equipment handles or the parameter of preset relevant this program.For simplicity, demonstration and input equipment are not shown.Convention also disposes the self-contained unit that comprises expansion system 10 and control module 14, and for example, in the form of " thermostatic expansion device ", they use in freezer unit and refrigerator usually.

Fig. 2 shows the instance of the expansion system 10 that comprises two

expansion cells

18,19, and each said expansion cell comprises first expander 18 (possibly be capillary 18) and the switching valve 19 that is connected in series.Two

expansion cell

18,19 parallel connections, and second expander 20 is connected to two

unit

18,19 abreast.Two switching valves 19 can open from cutting out to switch to by control module 14, provide 4 kinds of utilizable constraints altogether so that be defined for like

illustrative heat pump

7,8,9,10 among Fig. 1,11 operational factor like this.

Fig. 3 shows the expansion system 10 that substitutes in the cold-producing medium guider 11 of use between thermal source 7 and radiator 8.And expansion system 10 comprises expansion cell 18, and each expansion cell 18 is made up of single expander 18; And all expanders 18 are connected to by control module 14 controllable distributing valves 21; Control module 14 can be transferred like

illustrative heat pump

7,8,9 in Fig. 1 selectively; Each expander 18 that uses in 10,11.

Fig. 4 shows another instance of the variable expansion system 10 in the thermostatic expansion device that merges to.This device comprises the valve 10 of continuous variable, and the valve 10 of continuous variable is included in the cold-producing medium guider 11.In addition, this device also comprises handles air temperature sensor 22, handles air temperature sensor 22 and is connected to the temperature that detects said processing air when processing air guide device 5 leaves Processing Room 2 with the said processing air of box lunch at present.Handle air temperature sensor 22 at present nothing but a sphere that is full of working fluid 24, working fluid 24 is used for detecting the temperature of said sphere exposure place.In principle, temperature sensor 22 can be placed on its operation and is regarded as the useful any position of control vario valve 10.Temperature sensor 22 is connected to the chamber 14 as control module 14.In chamber 14, movably barrier film 23 will be full of said working fluid and with the chamber of the internal circulation of sphere 22 be full of the part of air chamber and separate.Barrier film 23 contact push rods 25, push rod 25 is used for setting the constraint of vario valve 10 again.When the temperature of said processing air detects when changing with sphere 22 in the exit of cylinder 2, working fluid 24 will expand or contraction and moving regulator 23 correspondingly.This moves through push rod 25 and is delivered to vario valve 10 and will responds the variations in temperature of said processing air and cause that the constraint of vario valve 10 changes.Therefore, the temperature of the processing air of response cylinder 2 outlet realizes

heat pump

7,8,9,10,11 operation adaptive.

After just starting, in baker 1, carry out typical drying course, will begin the heating period; In the said heating period, be included in the parts of handling in the

air loop

2,5; 6; 7,8 temperature with them change to runtime value from environment temperature, and the article 3 that will dry will be heated to the running temperature of rising.For the time weak point that keeps said process to continue, need to keep the time of heating short.Therefore; In expansion system 10, set high relatively constraint so that obtain the relatively high pressure of the cold-producing medium in the thermal source 7; Said pressure causes cold-producing medium rising condensation temperature; Obtain the temperature difference of the rising between the processing air in said cold-producing medium and the thermal source 7, and the heat that reaches increase is transferred to subsequently in the said processing air.In addition, the cold-producing medium stream that receives high constraint will reduce the evaporation quantity in the radiator 8, and reduce the synthetic cooling of handling air in the radiator 8 simultaneously.In

case parts

2,5,6,7,8 have reached their running temperatures separately, and in drying course, accurate plateau just will be along with the said heating period.In said accurate plateau, little variation only takes place in running temperature, and the constraint of expansion system 10 can be set to the rated value that reduces, and this rated value still can depend on the ambient environmental conditions that this has explained above literary composition.When said drying course reaches when finishing, wetly from the surface evaporation of the article 3 that will dry, and residual moisture must be drawn from being deep in the textile fabric of processing article 3.This is adding extra load on said process, this itself shows article 3, be at the parts 2 around them with from their running temperature of said processing air flow during another time temperature rises.Current temperature rises and is indicating the termination stage that carries out the transition to said drying course from said quasi-stationary state.Usually, this stage is very of short duration, to the whole almost not influence of duration of said drying course.Yet the constraint of increase will help reducing the evaporating temperature of the cold-producing medium in the radiator 8 and improving and from said processing air, extract moisture.Therefore ground, and mention the expectation in said termination stage above ignoring, self-contained variable expansion device 10, perhaps a plurality of such devices 10, especially selectable through the distributing valve 21 of response ambient conditions, can be applied on the electrical equipment 1 for this purpose.The function of this device 10 will be when temperature rises, to reduce constraint.Also should consider if be particularly useful for the requirement in said termination stage, also be can be acting except that the switchable expander shown in Fig. 4.

As for the processing air guide device 5 in the said electrical equipment that details here 1, it is that self seals so that in the loop of sealing basically, guide said processing air basically, the dryer of loop dryer or condensation type is provided therefore for electrical equipment 1.Yet this should not be considered to an enforceable characteristic.Novel feature disclosed herein will lead to them the electrical equipment of another kind of type well, wherein, said processing air guide device 5 itself is not self-isolation basically, perhaps in electrical equipment or even the parallel realization of a plurality of processing air guide device.

In order to infer; Follow as in the Rights attached thereto requirement, limit with above-mentioned in detail and illustrate and the invention enables household electrical appliance, especially the novelty embodiment of scrubbing-and-drying unit and the heat pump that wherein comprises can further raise the efficiency and use the continuing of processing procedure of the arrangement in this electrical equipment.

Reference numerals list

1 household electrical appliance, scrubbing-and-drying unit

2 Processing Rooms, cylinder

3 want dry article, the clothing that washing is good

4 rotating shafts

5 handle the air guide device

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 modules

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 handle air temperature sensor

23 barrier films

24 working fluids

25 push rods

Claims

1. household electrical appliance (1) comprise the Processing Room (2) that is used to handle article (3), are used for the processing air guide device (5) of boot process air through said Processing Room (2), and said processing air guide device (5) comprises the air blast (6) that is used to drive said processing air, be used to heat said processing air and be placed on the heater (7) and the heat pump (7,8,9 at said Processing Room (2) upper reaches; 10,11), wherein, said heater (7) is thermal source (7); Be used for heat from cycling through said heat pump (7,8,9,10; 11) cold-producing medium is transported to said processing air, and wherein, said heat pump (7,8; 9,10,11) also comprise and be used for heat is transported to the expansion system (10) of the radiator (8) of said cold-producing medium, the compressor (9) that is used to compress said cold-producing medium, the said cold-producing medium that is used to expand and is used for making said cold-producing medium cycle through said heat pump (7 at loop; 8,9,10; 11) cold-producing medium guider (11) is characterized in that

Said expansion system (10) has variable constraint.

2. household electrical appliance according to claim 1 is characterized in that,

Said household electrical appliance comprise be connected to said expansion system (10) and with said heat pump (7; 8,9,10; 11) the sensor associated unit (15; 16) control module (14), said control module (14) are used for response is communicated to the said expansion system of signal controlling (10) of said control module (14) by said sensor unit (15,16) constraint.

3. household electrical appliance according to claim 2 (1) is characterized in that,

Said sensor unit (15,16) comprises state sensor (15), is used to detect the state of said heat pump (7,8,9,10,11).

4. household electrical appliance according to claim 3 is characterized in that,

Said state sensor (15) is temperature sensor (15), is used to detect the treatment temperature in the said cold-producing medium guider (11).

5. household electrical appliance according to claim 4 is characterized in that,

Said treatment temperature is the temperature of said cold-producing medium when said cold-producing medium leaves said radiator (8); And wherein, control module (14) is preset to the said expansion system of control (10) in the said cold-producing medium that leaves said radiator (8), to keep given overheated.

6. according to any described household electrical appliance (1) in the claim 2 to 5, it is characterized in that,

Said sensor unit (15,16) comprises ambient temp sensor (16), is used to detect the environment temperature of said electrical equipment (1).

7. household electrical appliance according to claim 6 (1) is characterized in that,

If said environment temperature is substantially equal to given specified environment temperature; Said control module (14) is preset to said constraint is set to rated value; And wherein; If said environment temperature is different from said specified environment temperature basically, said control module (14) is preset to said constraint is set to the value that surpasses said rated value.

8. according to any described household electrical appliance (1) in the aforementioned claim, it is characterized in that,

Said expansion system (10) comprises at least two expansion cells (18,19,21), and said expansion cell (18,19,21) utilizes said control module (14) can join to changeably in the said cold-producing medium guider (11).

9. household electrical appliance according to claim 8 (1) is characterized in that,

Said expansion system (10) comprises expansion cell (18,19,21), and said expansion cell (18,19,21) comprises first expander (18) and valve (19) controllable by said control module (14) and that be connected in series.

10. household electrical appliance according to claim 9 (1) is characterized in that,

Said household electrical appliance (1) comprise second expander (20) that is connected to said expansion cell (18,19,21) abreast.

11. any described household electrical appliance (1) according in the claim 9 and 10 is characterized in that,

Said household electrical appliance (1) comprise a plurality of expansion cells (18,19,21) that connect in parallel with each other.

12. any described household electrical appliance (1) according in the claim 9 and 10 is characterized in that,

Said expansion cell (18,19,21) comprises a plurality of first expanders (18), and wherein, said first expander (18) connects through can be by the multichannel distributing valve (21) of said control module (14) control in parallel with each other.

13. any described household electrical appliance (1) according in the claim 1 to 7 is characterized in that,

Said expansion system (10) is by the controllable variable expansion device of said control module (14) (10).

14. household electrical appliance according to claim 13 (1) is characterized in that,

Said expansion system (10) comprises variable expansion valve (10).

15. any described household electrical appliance (1) according in the claim 13 and 14 is characterized in that,

Said expansion valve (10) is thermostatic expansion device (10).

16. household electrical appliance according to claim 15 is characterized in that,

Said thermostatic expansion device (10) has the temperature sensor (22) that is connected to the association of said processing air guide device (5) in the outlet of said Processing Room (2); Be used to detect the air themperature of said processing air when it leaves said Processing Room (2); And wherein, said thermostatic expansion device (10) is arranged to the relatively low constraint of said constraint when temperature is spent in the low latitude changed to the high relatively constraint when the high air temperature.

17. any described household electrical appliance (1) according in the claim 13 to 16 is characterized in that,

Said expansion system (10) is a plurality of thermostatic expansion devices (10), and wherein, and said thermostatic expansion device (10) connects through by the controllable multichannel distributing valve of said control module (14) (21) in parallel with each other.

18. any described household electrical appliance (1) according in the aforementioned claim is characterized in that,

Said processing air guide device (5) self seals basically.

19. household electrical appliance according to claim 17 (1) is characterized in that,

Said radiator (8) is cooler (8), and said cooler (8) is placed in the said processing air guide device (5), is used for after said processing air leaves said Processing Room, cooling off said processing air to extract moisture from said processing air.

20. household electrical appliance according to claim 19 is characterized in that,

Said cooler 8) has the condensate collector of placing under it (13), be used for collecting the condensate liquid that precipitates from the interior processing air of said cooler (8).

21. any described household electrical appliance (1) according in the aforementioned claim is characterized in that,

Said Processing Room (2) is rotatable cylinder (2), is used to overturn place the said article of wherein handling (3).