WO2022062350A1 - 洗干一体机 - Google Patents

洗干一体机 Download PDF

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Publication number
WO2022062350A1
WO2022062350A1 PCT/CN2021/083062 CN2021083062W WO2022062350A1 WO 2022062350 A1 WO2022062350 A1 WO 2022062350A1 CN 2021083062 W CN2021083062 W CN 2021083062W WO 2022062350 A1 WO2022062350 A1 WO 2022062350A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
air
circulation path
filter
air circulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/083062
Other languages
English (en)
French (fr)
Inventor
八田聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
Aqua Co Ltd
Original Assignee
Qingdao Haier Washing Machine Co Ltd
Haier Smart Home Co Ltd
Aqua Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Washing Machine Co Ltd, Haier Smart Home Co Ltd, Aqua Co Ltd filed Critical Qingdao Haier Washing Machine Co Ltd
Priority to CN202180065925.2A priority Critical patent/CN116261613A/zh
Publication of WO2022062350A1 publication Critical patent/WO2022062350A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the invention relates to an integrated washing and drying machine.
  • the all-in-one washer and dryer described in the following Patent Document 1 includes an outer case, a water tub arranged inside the outer case, a rotary drum accommodated in the water tub, and drying air for supplying drying air to the interior of the rotary drum Road and air supply unit.
  • the drying air duct includes an outlet pipe and an inlet pipe integrally formed with the water tank.
  • the air supply unit includes a connection duct connected to the outlet duct, a blower fan connected to the connection duct, a heater connected to the blower fan and the introduction duct, and a dryer attached to a filter attachment portion provided in the connection duct filter.
  • the air in the water tank flows through the outlet pipe and the connecting pipe with the drive of the blowing fan, and is heated by the heater into drying air, which flows into the water tank from the introduction pipe and displaces the air in the rotating drum. Laundry drying.
  • the drying filter captures the dust contained in the air flowing through the connecting ducts.
  • the drying filter can be removed from the opening provided in the upper surface of the filter attachment portion.
  • a sound collecting portion that collects the sound of the drying wind flowing through the connecting duct and acquires a sound signal is provided.
  • the drying air passage is in a closed state and the sound from the blowing fan is relatively quiet. Therefore, the drying air flowing in the connecting duct is The noise level is relatively low.
  • the air passage resistance in the connecting duct becomes small and the air volume of the drying air becomes large, so that in the connecting duct, the air flow of the drying air becomes large.
  • the noise level of the flowing drying air is relatively high.
  • whether the drying filter is attached to the filter attaching part is determined according to the intensity of the sound signal acquired by the sound collecting part, that is, the difference in the noise level.
  • Patent Document 1 Japanese Patent Laid-Open No. 2014-42741
  • the present invention was made under this background, and an object of the present invention is to provide an all-in-one washer-drying machine capable of determining at low cost whether or not a filter for drying operation is attached or not.
  • the present invention is an integrated washing and drying machine, comprising: a box body; a washing tub, which is arranged in the box body and accommodates laundry; an air circulation path, which is arranged in the box body and includes a take-out port connected with the washing tub. and a return port; an air supply unit for taking out the air in the washing tub from the extraction port into the air circulation path and returning it to the washing tub from the return port, thereby circulating the air;
  • the heat pump includes: a compressor for compressing a refrigerant; a heat exchanger arranged in the air circulation path to perform heat exchange between the refrigerant and the air in the air circulation path; and a refrigerant circulation path for allowing the refrigerant to circulate in the air circulation path.
  • the control part controls the air supply part and the heat pump to execute the drying operation of drying the laundry in the washing tub;
  • the first door is installed in the air circulation path The first disassembly port of the box is opened and closed; and the second door is used to open and close the second disassembly port provided in the box, wherein the filter can pass through the first disassembly port and the The second detachable port is detached from the air circulation path to the outside of the box, and the temperature measured by the refrigerant temperature measurement unit or the degree of increase of the temperature is less than
  • the control unit determines that the filter does not exist in the air circulation passage.
  • the present invention is characterized in that the heat exchanger includes: a first heat exchanger heated by the refrigerant compressed by the compressor; and a second heat exchanger subjected to the first heat exchange
  • the refrigerant is cooled by the compressor
  • the refrigerant circulation path includes: a discharge path that guides the refrigerant compressed by the compressor to the first heat exchanger; and a return path that guides the refrigerant from the second heat exchanger to the place
  • the temperature measured by the refrigerant temperature measuring unit is the temperature of the flow path of the refrigerant in the first heat exchanger or the temperature of the discharge path.
  • the present invention is characterized in that the all-in-one washer-dryer further includes an air temperature measuring unit that measures the air temperature in the washing tub, and the air temperature measuring unit is characterized in that after a predetermined time has elapsed from the start of the drying operation When the measured temperature or the degree of increase of the temperature is smaller than a predetermined threshold value, the control unit determines that the filter is not present in the air circulation passage.
  • the present invention is characterized in that the all-in-one washer-dryer further includes a notification unit for notifying that there is no filter in the air circulation path when the control unit determines that there is no filter in the air circulation path the filter case.
  • control unit prolongs the drying operation when it is determined that the filter is not present in the air circulation passage.
  • the air in the washing tub is circulated so as to be taken out from the outlet to be taken out into the air circulation path and returned to the washing tub from the return port as the blower operates. .
  • the circulating air is heated into hot air by heat exchange with the heat exchanger of the heat pump in the drying circulation path, and the laundry in the washing tub is dried.
  • the filter arranged in the air circulation path captures foreign matter from the air in the air circulation path.
  • the user can open the first door and the second door to open the first detachable port of the air circulation path and the second detachable port of the box, and remove the filter in the air circulation path from the first detachable port and the second detachable port.
  • the disassembly port is disassembled to the outside of the box for maintenance.
  • the temperature of the refrigerant measured by the refrigerant temperature measuring unit may be the temperature of the refrigerant itself or the temperature of the flow path through which the refrigerant flows.
  • the heat exchanger includes: a first heat exchanger heated by the refrigerant compressed by the compressor; and a second heat exchanger cooled by the refrigerant passed through the first heat exchanger, and the refrigerant circulation path It includes: a discharge path for guiding the refrigerant compressed by the compressor to the first heat exchanger; and a return path for guiding the refrigerant from the second heat exchanger to the compressor. If the drying operation is started in the state where the filter is attached to the air circulation path, the temperature of the refrigerant flow path and the temperature of the discharge path in the first heat exchanger tend to continue to rise remarkably. The presence or absence of a filter is correctly judged at these temperatures.
  • the control unit when the drying operation is started in a state where the filter is attached to the air circulation path, the air temperature in the washing tub will continue to rise, so that from the start of the drying operation After a predetermined time has elapsed, the air temperature or the degree of increase in the temperature will reach a predetermined threshold value or more. Therefore, in the all-in-one washer-dryer, when the air temperature measured by the air temperature measuring unit or the degree of increase in the temperature is smaller than a predetermined threshold value after a predetermined time has elapsed since the start of the drying operation, the control unit also determines that the air circulates There are no filters in the road. In this way, the presence or absence of the attachment of the filter can be determined at low cost by focusing not only on the temperature of the refrigerant of the heat pump but also on the temperature of the air in the washing tub.
  • the notification unit when the control unit determines that there is no filter in the air circulation path, notifies the fact that the user can be urged to attach the filter to the air circulation path.
  • control unit prolongs the drying operation when it is determined that there is no filter in the air circulation path, so even when there is no filter in the air circulation path, the laundry in the washing tub is difficult to dry. It can also dry the laundry completely.
  • FIG. 1 is a schematic vertical cross-sectional right side view of the all-in-one washer and dryer according to an embodiment of the present invention.
  • Fig. 2 is a block diagram showing an electrical configuration of the all-in-one washer and dryer.
  • FIG. 3 is a timing chart showing a time-dependent change in temperature at each measurement position during a drying operation of the washer-dryer in a state where a filter is attached.
  • FIG. 4 is a time chart showing a time-dependent change in temperature at each measurement position in a drying operation in a state in which a filter is not attached.
  • FIG. 5 is a flowchart showing filter detection processing of the first embodiment in the drying operation.
  • FIG. 6 is a flowchart showing filter detection processing in the second embodiment.
  • FIG. 7 is a flowchart showing filter detection processing in the third embodiment.
  • Fig. 8 is a flowchart showing a drying operation.
  • FIG. 1 is a schematic vertical cross-sectional right side view of an all-in-one washer-drying machine 1 according to an embodiment of the present invention.
  • the direction perpendicular to the paper surface in FIG. 1 is referred to as the left-right direction X of the washer-drying machine 1
  • the left-right direction in FIG. 1 is referred to as the front-rear direction Y of the washer-drying machine 1
  • the vertical direction in FIG. 1 is referred to as It is the vertical direction Z of the washer-drying machine 1 .
  • the back side of the paper surface of FIG. 1 is called the left side X1
  • the right side X2 In the front-rear direction Y, the left side in FIG. 1 is called front side Y1, and the right side in FIG. 1 is called back side Y2.
  • the upper side is referred to as an upper side Z1
  • the lower side is referred to as a lower side Z2.
  • the washer-drying machine 1 includes: a box 2 , a washing tub 3 arranged in the casing 2 , a water supply channel 4 and a drainage channel 5 connected to the washing tub 3 , and capturing foreign matter in the water discharged from the washing tub 3 through the drainage channel 5 drain filter 6.
  • the washing tub 3 includes an outer tub 7 and a drum 8 accommodated in the outer tub 7 . Therefore, the all-in-one washer-dryer 1 is a so-called drum-type all-in-one washer and dryer.
  • the washer-drying machine 1 includes a motor 9 that rotates the drum 8 and a drying unit 10 that dries the laundry L accommodated in the drum 8 .
  • the case 2 is formed in a box shape.
  • the box 2 has a vertically extending front wall 2A, a top wall 2B extending horizontally from the upper end of the front wall 2A to the rear side Y2, and a bottom wall 2C extending horizontally from the lower end of the front wall 2A to the rear side Y2.
  • An opening 2D that communicates the inside and the outside of the case 2 is formed in the front wall 2A.
  • a door 11 that opens and closes the opening 2D is provided on the front wall 2A.
  • the outer cylinder 7 is connected to the upper end of a shock absorber 12 extending upward Z1 from the bottom wall 2C of the case 2 . Thereby, the entire washing tub 3 including the outer tub 7 and the drum 8 is elastically supported by the bottom wall 2C via the damper 12 .
  • the outer cylinder 7 has a cylindrical peripheral wall 7A centered on an axis J extending in the front-rear direction Y along the horizontal direction H, a disk-shaped rear wall 7B that blocks the hollow portion of the peripheral wall 7A from the rear side Y2, and
  • the annular front wall 7C is connected to the front end edge of the peripheral wall 7A.
  • the back wall 7B is vertically arranged, and has an annular outer peripheral portion 7D and a cylindrical central portion 7E that protrudes a step toward the rear side Y2 from the outer peripheral portion 7D.
  • a through hole 7F that penetrates the center portion 7E in the front-rear direction Y along the axis J is formed in the center of the center portion 7E.
  • the front wall 7C has an annular first portion 7G protruding from the front end edge of the peripheral wall 7A to the axis J side, a cylindrical second portion 7H protruding from the inner peripheral edge of the first portion 7G to the front side Y1, and
  • the annular third portion 7I protrudes toward the axis J side from the front end edge of the second portion 7H.
  • a port 7J that communicates with the hollow portion of the peripheral wall 7A from the front side Y1 is formed inside the third portion 7I.
  • the port 7J faces and communicates with the opening 2D of the case 2 from the rear side Y2.
  • the water supply passage 4 has one end (not shown) connected to a faucet (not shown) and the other end 4A connected to, for example, the central portion 7E of the rear wall 7B of the outer cylinder 7 .
  • the water from the faucet is supplied into the outer cylinder 7 from the water supply passage 4 .
  • Water such as tap water and detergent water in which detergent is dissolved in the tap water is stored in the outer cylinder 7 .
  • a water supply valve 13 that is opened and closed in order to start or stop water supply is provided in the middle of the water supply passage 4 .
  • the drainage passage 5 is connected to the lower end portion of the outer cylinder 7, for example, the lower end portion of the first portion 7G of the front wall 7C.
  • the water in the outer cylinder 7 is discharged out of the machine through the drain passage 5 .
  • a drain valve 14 that is opened and closed in order to start or stop draining is provided in the middle of the drain passage 5 .
  • the drain filter 6 is provided in the drain passage 5 in the upstream portion of the outer cylinder 7 rather than the drain valve 14 . Since the front end of the drain filter 6 is exposed from the front wall 2A of the case 2 to the front side Y1 , the user can grasp the front end of the drain filter 6 to attach or detach the drain filter 6 to the case 2 .
  • the structure of the drain filter 6 can use a well-known structure.
  • the drum 8 is one turn smaller than the outer cylinder 7 .
  • the drum 8 has: a cylindrical peripheral wall 8A arranged coaxially with the peripheral wall 7A of the outer cylinder 7; An annular annular wall 8C whose front end edge protrudes toward the axis J side.
  • a plurality of through holes 8D are formed in the drum 8 at least in the circumferential wall 8A, and the water in the outer tube 7 flows between the outer tube 7 and the drum 8 through the through holes 8D. Thereby, the water level in the outer cylinder 7 matches the water level in the drum 8 .
  • a support shaft 15 extending toward the rear side Y2 along the axis J is provided at the center of the rear wall 8B of the drum 8 . The rear end portion of the support shaft 15 is disposed on the rear side Y2 of the rear surface wall 7B through the through hole 7F of the rear surface wall 7B of the outer cylinder 7 .
  • a port 8E that communicates with the hollow portion of the circumferential wall 8A from the front side Y1 is formed.
  • the inlet and outlet 8E face and communicate with the inlet and outlet 7J of the outer cylinder 7 and the opening 2D of the casing 2 from the rear side Y2.
  • the door 7J and the door 8E are opened and closed together with the opening 2D through the door 11 .
  • the user of the all-in-one washer-drying machine 1 throws the laundry L into the drum 8 through the open opening 2D, the inlet and outlet 7J, and the inlet and outlet 8E.
  • the motor 9 is in the shape of a disk having substantially the same outer diameter as the central portion 7E of the rear wall 7B of the outer cylinder 7 , and is arranged on the rear side Y2 of the central portion 7E in the housing 2 and fixed to the central portion 7E.
  • the motor 9 is connected to the support shaft 15 provided in the drum 8 .
  • the driving force generated by the motor 9 is transmitted to the support shaft 15 , and the drum 8 is rotationally driven around the axis J along with the support shaft 15 .
  • a clutch mechanism (not shown) which transmits or cuts off the driving force of the motor 9 to the support shaft 15 may be provided between the motor 9 and the support shaft 15 .
  • the drying unit 10 includes an air circulation path 20 and an air blower 21 for circulating the air in the washing tub 3 , a filter unit 22 for capturing foreign matter from the circulating air, and a branch path 23 for maintaining the filter unit 22 And water injection valve 24 and heat pump 25 for heating or dehumidifying the circulating air.
  • the air circulation path 20 is a flow path arranged around the outer cylinder 7 in the case 2 .
  • the air circulation path 20 has a midway portion 20A extending in the front-rear direction Y at a position higher than the outer cylinder 7, a rear portion 20B extending from the rear end of the midway portion 20A to the lower side Z2, and from the front end of the midway portion 20A to the lower side Front portion 20C of Z2 extension.
  • a take-out port 20D is formed at the front end of the lower end portion of the rear portion 20B.
  • the extraction port 20D is connected to a portion of the outer peripheral portion 7D of the rear wall 7B of the outer cylinder 7 higher than the upper limit water level, and communicates with the inside of the outer cylinder 7 from the rear side Y2.
  • a return port 20E is formed at the lower end of the front portion 20C.
  • the return port 20E is connected to the upper end portion of the second portion 7H of the front wall 7C of the outer tube 7, and communicates with the inside of the outer tube 7 from the upper side Z1.
  • the opening connected to the extraction port 20D in the outer peripheral portion 7D is referred to as an outlet 7K, and the opening connected to the return port 20E in the front wall 7C is referred to as an inlet 7L.
  • the blower 21 is a blower fan, and includes a rotor blade 21A disposed in a region near the upstream side of the extraction port 20D in the midway portion 20A of the air circulation path 20, and an electric motor 21B that rotates the rotor blade 21A.
  • the rotary blade 21A rotates, the air in the washing tub 3, that is, the air in the outer tub 7 and the air in the drum 8 is taken out into the air circulation path 20 from the outlet 20D, that is, the outlet 7K, as indicated by the thick dashed arrows.
  • the return port 20E that is, the inlet 7L.
  • the air in the washing tub 3 circulates so as to flow through the washing tub 3 and the air circulation path 20 in this order.
  • the filter unit 22 is arrange
  • the filtering unit 22 includes a single or multiple filters F1.
  • the filter F1 is a drying filter composed of a mesh sheet and a frame supporting the mesh sheet.
  • the filter F1 is arrange
  • foreign matter such as broken threads contained in the air is captured by the filter F1.
  • the branch path 23 is branched from the upstream portion of the water supply path 4 which is closer to the faucet than the water supply valve 13 and is connected to the filter unit 22 .
  • the water injection valve 24 is provided in the branch path 23, and is opened and closed in order to start or stop water injection to the filter F1 of the filter unit 22.
  • the water injection valve 24 is opened, the water from the water supply passage 4 is supplied to the filter unit 22 through the branch passage 23, and is injected into the filter F1 from the upper side Z1.
  • the foreign matter captured by the filter F1 is peeled off from the filter F1 , falls into the outer cylinder 7 from the take-out port 20D of the air circulation path 20 , and is captured by the drain filter 6 .
  • the foreign matter captured by the drain filter 6 is removed when the user removes the drain filter 6 for maintenance at an appropriate timing.
  • the heat pump 25 includes a compressor 26 that compresses the refrigerant, a heat exchanger 27 that exchanges heat between the refrigerant and the air in the air circulation path 20 , and a refrigerant circulation path that circulates the refrigerant between the compressor 26 and the heat exchanger 27 . 28.
  • the compressor 26 a known electric compressor can be used.
  • the compressor 26 is arranged, for example, at a position lower than the axis J, which is the rotation axis of the drum 8 , and is fixed to the bottom wall 2C of the casing 2 .
  • the heat exchanger 27 is disposed in the midway portion 20A of the air circulation path 20 on the downstream side of the return port 20E, more specifically, in the region on the front side Y1, than the rotor blades 21A of the blower 21 .
  • the heat exchanger 27 includes a first heat exchanger 27A serving as a condenser on the heating side, a second heat exchanger 27B serving as an evaporator on the cooling side, and a heat exchanger 27A connecting the first heat exchanger 27A and the second heat exchanger 27B.
  • Capillary 27C is disposed in the midway portion 20A of the air circulation path 20 on the downstream side of the return port 20E, more specifically, in the region on the front side Y1, than the rotor blades 21A of the blower 21 .
  • the heat exchanger 27 includes a first heat exchanger 27A serving as a condenser on the heating side, a second heat exchanger 27B serving as an evaporator on the cooling side, and a heat exchanger 27
  • the 1st heat exchanger 27A is arrange
  • the first heat exchanger 27A is provided with a plurality of radiating fins 27D
  • the second heat exchanger 27B is provided with a plurality of cooling fins 27E.
  • Inside the first heat exchanger 27A a flow path 27F for the refrigerant is provided, and inside the second heat exchanger 27B, a flow path 27G for the refrigerant is provided.
  • the flow path 27F and the flow path 27G are each a tube made of metal such as aluminum.
  • the plurality of heat dissipation fins 27D are arranged around the flow path 27F.
  • the plurality of cooling fins 27E are arranged around the flow path 27G.
  • the capillary 27C connects the flow path 27F and the flow path 27G.
  • the refrigerant circulation path 28 is formed of a pipe made of metal such as aluminum, and connects the compressor 26 and the heat exchanger 27 .
  • the refrigerant circulation path 28 is a circulation flow path through which the refrigerant is taken out from the compressor 26 and returned to the compressor 26 through the heat exchanger 27 again.
  • the refrigerant circulation path 28 includes a discharge path 28A that guides the refrigerant compressed by the compressor 26 to the flow path 27F in the first heat exchanger 27A.
  • the refrigerant circulation path 28 further includes a return path 28B that leads the refrigerant flowing from the first heat exchanger 27A through the flow path 27G of the second heat exchanger 27B through the capillary 27C from the second heat exchanger 27B to the compressor 26 .
  • the flow path 27F may be regarded as a part of the discharge path 28A
  • the flow path 27G may be regarded as a part of the return path 28B.
  • the all-in-one washer-dryer 1 further includes a control unit 30 composed of a substrate mounted with a microcomputer with a built-in timer. Electrical components such as the motor 9 , the drying unit 10 , the water supply valve 13 , the drain valve 14 , and the water injection valve 24 are electrically connected to the control unit 30 (see also FIG. 2 ).
  • the control unit 30 executes the washing and drying operation by controlling the operations of these electrical components.
  • the washing and drying operation includes a washing process, a rinsing process, a dehydration process, and a drying process.
  • the drying process may also be performed as a separate drying operation in addition to the washing and drying operation. In the following description, the drying process is the same as the drying operation.
  • the control unit 30 rotates the drum 8 by the motor 9 after the water supply valve 13 is opened for a predetermined time to the outer tub 7 and the drum 8 with the drain valve 14 closed. Thereby, the laundry L in the drum 8 is thrown and washed. During drop washing, the laundry L is repeatedly lifted to a certain degree and then naturally falls to the water surface "tumbling". The detergent components contained in the detergent water stored in the drum 8 remove dirt from the laundry L by the impact generated by the tumbling. When the control unit 30 opens the drain valve 14 to drain the water after a predetermined time has elapsed from the start of the tumbling, the cleaning process ends.
  • the control unit 30 rotates the drum 8 by the motor 9 after the water supply valve 13 is opened for a predetermined time to the outer tub 7 and the drum 8 with the drain valve 14 closed. In this way, since the above-mentioned tumbling is repeated, the laundry L is rinsed with the tap water in the drum 8 .
  • the rinsing process ends when the control unit 30 drains the water after a predetermined time has elapsed from the start of the tumbling. The rinsing process can be repeated multiple times.
  • the control unit 30 dehydrates and rotates the drum 8 with the drain valve 14 open.
  • the laundry L in the drum 8 is dehydrated by the centrifugal force generated by the spin-drying rotation of the drum 8 .
  • the water oozing out from the laundry L by dehydration is discharged out of the machine through the drain passage 5 . It is possible that the spin-drying process is carried out not only after the rinsing process but also after the washing process.
  • the control unit 30 operates the air blower 21 and the compressor 26 of the heat pump 25 to generate hot air, circulate the hot air between the drum 8 and the air circulation path 20, and supply it to the laundry L in the drum 8 .
  • the refrigerant is compressed by the compressor 26 to become high temperature and high pressure, and then radiates heat when passing through the flow passage 27F in the first heat exchanger 27A via the discharge passage 28A.
  • the heat dissipation fins 27D are heated to a high temperature by heat dissipation of the refrigerant passing through the flow path 27F.
  • the refrigerant that has passed through the first heat exchanger 27A is decompressed and reduced to a low temperature when passing through the capillary 27C, and then cools the cooling fins 27E when passing through the flow path 27G in the second heat exchanger 27B.
  • the air in the air circulation path 20 is dehumidified when passing around the cooling fins 27E of the second heat exchanger 27B in the air circulation path 20 .
  • the dehumidified air is heated and becomes hot air while passing around the heat dissipation fins 27D of the first heat exchanger 27A. That is, the air in the air circulation path 20 becomes hot air by heat exchange with the refrigerant flowing through the first heat exchanger 27A.
  • the hot air flows into the outer tub 7 from the inlet 7L of the outer tub 7 and is supplied to the laundry L in the drum 8, thereby drying the laundry L.
  • the control unit 30 may operate the motor 9 to rotate the drum 8 . Thereby, hot air can be blown to the laundry L without any dead space.
  • the control unit 30 opens the water injection valve 24 to inject water into the filter F1 as a maintenance process to remove foreign matter from the filter F1.
  • the all-in-one washer-drying machine 1 further includes a filter F2 for capturing foreign matter that is not completely captured by the filter F1 in the air circulation path 20 .
  • the filter F2 is a drying filter composed of a mesh sheet and a frame supporting the mesh sheet similarly to the filter F1.
  • the filter F2 is arranged, for example, between the rotating blades 21A of the air blower 21 and the heat exchanger 27 in the midway portion 20A of the air circulation path 20 .
  • the filter F2 is arrange
  • Filter F1 can be automatically maintained without removal as described above, but filter F2 needs to be removed for regular maintenance. Therefore, the ceiling wall 20F in the midway part 20A of the air circulation path 20 is provided with the first attachment and detachment port 20G which faces the filter F2 from the upper side Z1.
  • a second detachable port 2E is provided at a position just above the first detachable port 20G on the top wall 2B of the case 2 .
  • the first attaching and detaching port 20G and the second attaching and detaching port 2E are openings having a size through which the filter F2 passes, respectively.
  • the washer-dryer 1 further includes a first door 31 that opens and closes the first detachable port 20G, and a second door 32 that opens and closes the second detachable port 2E.
  • the first door 31 is connected to the ceiling wall 20F of the air circulation path 20 via, for example, a hinge portion 33 so as to be rotatable around the hinge portion 33 .
  • the second door 32 is also connected to the top wall 2B of the box 2 via, for example, the hinge portion 34 so as to be rotatable around the hinge portion 34 .
  • the user can open the first detachable port 20G and the second detachable port 2E by rotating the first door 31 and the second door 32 to the upper side Z1, so that the filter F2 in the air circulation path 20 can pass through the first detachable port.
  • 20G and the second detachable port 2E are taken out from the air circulation path 20 to the outside of the casing 2 to perform maintenance such as cleaning of the filter F2.
  • the user returns the removed filter F2 to the air circulation path 20 from the first detachable port 20G and the second detachable port 2E, and closes the first detachable door 31 and the second door 32 by turning the first door 31 and the second door 32 to the lower side Z2.
  • the mounting port 20G and the second dismounting port 2E are provided to open the first detachable port 20G and the second detachable port 2E by rotating the first door 31 and the second door 32 to the upper side Z1, so that the filter F2 in the air circulation path 20 can pass through the first detachable port.
  • a positioning portion (not shown) for positioning the filter F2 is provided in the air circulation path 20 .
  • the first door 31 and the second door 32 may be integrated into one door that opens and closes the first detachable port 20G and the second detachable port 2E together. That is, one of the first door 31 and the second door 32 may serve as the other.
  • the filter F2 is referred to as the filter F2 in the state of being attached to the air circulation path 20 .
  • the filter F2 located outside the air circulation path 20 is referred to as the filter F2 not in the air circulation path 20, that is, the filter F2 in the non-attached state.
  • the first detachable port 20G and the second detachable port 2E may be in a closed state or an open state.
  • the air in the air circulation path 20 leaks from these detachable ports, and the hot air supplied to the laundry L from the air circulation path 20 The air volume will be weakened, and therefore, the drying efficiency of the laundry L may be further reduced. If the drying efficiency of the laundry L is lowered, it will take time until the laundry L is dried, which may lead to increased power consumption and drying operation.
  • the filter F2 needs to be attached to the air circulation path 20 during the drying operation, but when the first door 31 and the second door 32 are closed, the user cannot view the washer-dryer 1 from the outside.
  • the presence or absence of the filter F2 in the air circulation path 20 is checked visually. Therefore, the control part 30 performs the filter detection process which detects the presence or absence of the filter F2 in the air circulation path 20 during a drying process.
  • the all-in-one washer-dryer 1 further includes a refrigerant temperature measurement unit 35 that measures the temperature of the refrigerant compressed by the compressor 26 in the heat pump 25, and an air temperature measurement unit that measures the temperature of the air in the washing tub 3.
  • the unit 36 , the ammeter 37 for measuring the value of the current flowing through the motor 21B of the blower unit 21 , and the notification unit 38 see also FIG. 2 ).
  • the refrigerant temperature measurement unit 35 includes a first thermometer 41 , a second thermometer 42 , and a third thermometer 43 , each of which is formed of a thermistor.
  • the first thermometer 41 is attached to the discharge path 28A of the heat pump 25, and measures the surface temperature of the discharge path 28A. Since the surface temperature of the discharge passage 28A is almost the same as the temperature of the refrigerant flowing in the discharge passage 28A, it is regarded as the temperature of the refrigerant.
  • the first thermometer 41 may be exposed in the discharge passage 28A to measure the temperature of the refrigerant itself in the discharge passage 28A.
  • the second thermometer 42 is attached to the middle portion of the first heat exchanger 27A of the heat pump 25, that is, the flow path 27F of the condenser, and measures the surface temperature of the middle portion. Since the surface temperature of the flow path 27F is almost the same as the temperature of the refrigerant flowing in the flow path 27F, it is regarded as the temperature of the refrigerant.
  • the second thermometer 42 may be exposed in the flow path 27F to measure the temperature of the refrigerant itself in the flow path 27F.
  • the third thermometer 43 is attached to the inlet portion connected to the capillary 27C in the second heat exchanger 27B of the heat pump 25, that is, the flow path 27G of the evaporator, and measures the surface temperature of the inlet portion. Since the surface temperature of the flow path 27G is almost the same as the temperature of the refrigerant flowing in the flow path 27G, it is regarded as the temperature of the refrigerant.
  • the third thermometer 43 may be exposed in the flow path 27G to measure the temperature of the refrigerant itself in the inlet portion of the flow path 27G.
  • the temperature measured by the first thermometer 41 will be referred to as “the temperature of the discharge path 28A”
  • the temperature measured by the second thermometer 42 will be referred to as the “intermediate temperature of the first heat exchanger 27A”
  • the temperature measured by the third thermometer 43 will be referred to as the “intermediate temperature of the first heat exchanger 27A”.
  • the measured temperature is referred to as "the inlet temperature of the second heat exchanger 27B".
  • thermometer 41 The measurement results of the first thermometer 41 , the second thermometer 42 , and the third thermometer 43 , that is, the “temperature of the discharge path 28A,” the “intermediate temperature of the first heat exchanger 27A,” and the “inlet temperature of the second heat exchanger 27B,” respectively are input to the control unit 30 in real time.
  • the air temperature measuring unit 36 includes a fourth thermometer 44 and a fifth thermometer 45 each composed of a thermistor.
  • the fourth thermometer 44 is attached near the outlet 7K of the outer cylinder 7, and measures the air temperature in the outlet 7K.
  • the fifth thermometer 45 is attached near the inlet 7L of the outer cylinder 7, and measures the air temperature in the inlet 7L.
  • the temperature measured by the fourth thermometer 44 will be referred to as the "outlet temperature of the outer cylinder 7”
  • the temperature measured by the fifth thermometer 45 will be referred to as the "inlet temperature of the outer cylinder 7".
  • the measurement results of the fourth thermometer 44 and the fifth thermometer 45 that is, the “outlet temperature of the outer cylinder 7 ” and the “inlet temperature of the outer cylinder 7 ” are input to the control unit 30 in real time, respectively.
  • a known ammeter can be used as the ammeter 37 .
  • the measurement results of the ammeter 37 are input to the control unit 30 in real time.
  • the notification unit 38 may be a display unit of a liquid crystal touch panel provided on the front wall 2A of the housing 2 , or may be a buzzer built in the housing 2 .
  • FIG. 3 is a time chart showing a time-dependent change in temperature at each measurement position in a drying operation in a state where the filter F2 is attached to the air circulation path 20 .
  • FIG. 4 is a time chart showing a time-dependent change in temperature at each measurement position in a drying operation in a state where the filter F2 is taken out from the air circulation path 20 .
  • the horizontal axis represents the elapsed time
  • the vertical axis represents “the temperature of the discharge path 28A”, “the intermediate temperature of the first heat exchanger 27A”, and “the inlet of the second heat exchanger 27B,” respectively.
  • temperature "outlet temperature of outer cylinder 7", and “inlet temperature of outer cylinder 7”.
  • the unit of elapsed time is "minutes” and the unit of temperature is "degrees”.
  • the temperature of the refrigerant compressed by the compressor 26 of the heat pump 25 decreases as it passes through the discharge path 28A, the first heat exchanger 27A, and the second heat exchanger 27B in this order. Therefore, the temperature of the discharge path 28A is higher than that of the first heat exchange.
  • the intermediate temperature of the heat exchanger 27A is high, and the intermediate temperature of the first heat exchanger 27A is higher than the inlet temperature of the second heat exchanger 27B.
  • the circulating air flows into the air circulation path 20 from the outlet 7K of the outer cylinder 7, is heated by the first heat exchanger 27A, and flows into the outer cylinder 7 from the inlet 7L of the outer cylinder 7. Therefore, the inlet temperature of the outer cylinder 7 is higher than that of the outer cylinder 7.
  • the outlet temperature is high.
  • FIG. 3 shows the measurement results during the drying operation started in the state where the filter F2 is attached to the air circulation path 20 .
  • the temperature of the discharge passage 28A, the intermediate temperature of the first heat exchanger 27A, the inlet temperature of the second heat exchanger 27B, the outlet temperature of the outer cylinder 7, and the inlet temperature of the outer cylinder 7 are all changed from the drying operation It was not stable within 10 minutes from the start, but after 10 minutes passed from the start of the drying operation, it continued to rise with the operation of the air blower 21 and the heat pump 25 . Therefore, these temperatures are indicators showing the state of the drying operation. Furthermore, the intermediate temperature of the first heat exchanger 27A and the temperature of the discharge passage 28A are also indicators indicating the state of the compressor 26 . Therefore, when these temperatures reach a predetermined upper limit, the control unit 30 protects the compressor 26 . The drying operation is stopped.
  • the outlet temperature of the outer cylinder 7 and the inlet temperature of the outer cylinder 7 increase within 20 minutes from the start of the drying operation, outside air is generated at the first detachable port 20G and the second detachable port 2E. These temperatures will be saturated and will not rise after 20 minutes from the start of the drying operation. In this case, the inlet temperature of the outer cylinder 7 will not reach 55 degrees, and the outlet temperature of the outer cylinder 7 will not even reach 30 degrees.
  • the respective change characteristics of the temperature of the discharge path 28A, the intermediate temperature of the first heat exchanger 27A, the inlet temperature of the second heat exchanger 27B, the outlet temperature of the outer cylinder 7, and the inlet temperature of the outer cylinder 7 are determined by the air circulation path. 20 Varies with or without filter F2.
  • the washer-dryer 1 using the heat pump 25 when the drying operation is started in the state where the filter F2 is attached to the circulation path 20, the refrigerant compressed by the compressor 26 in the heat pump 25 is produced. temperature will continue to rise.
  • the control part 30 performs the filter detection process which mainly utilizes such a change characteristic of a refrigerant
  • FIG. 5 is a flowchart showing filter detection processing of the first embodiment in the drying operation.
  • the control unit 30 will The refrigerant temperature, which is the intermediate temperature of the first heat exchanger 27A, is measured (step S2). If the measured value is equal to or greater than a threshold value of, for example, 60 degrees (YES in step S3 ), the control unit 30 determines that there is a filter F2 in the air circulation path 20 , ends the filter detection process, and continues the drying operation.
  • This threshold value is obtained in advance from the change characteristic of the intermediate temperature of the first heat exchanger 27A (see FIG. 3 ) and stored in a memory (not shown) of the control unit 30 . The same applies to other thresholds described later.
  • the control unit 30 determines that there is no filter F2 in the air circulation path 20, and passes the notification unit 38 informs that there is no filter F2 in the air circulation path 20 (step S4). Then, the control unit 30 ends the filter detection process and continues the drying operation.
  • the control unit 30 In the filter detection process using the temperature change characteristic of the discharge path 28A, the control unit 30 also executes the processes of steps S1 to S4, but the threshold value in step S3 is set according to the change in the temperature of the discharge path 28A The resulting value of the property, such as 65 degrees.
  • the control unit 30 In the filter detection process in the case of using the change characteristic of the inlet temperature of the second heat exchanger 27B, the control unit 30 also executes the processes of steps S1 to S4, but the threshold value in step S3 is set to be based on the second heat The value obtained from the change characteristic of the inlet temperature of the exchanger 27B, for example, 25 degrees.
  • FIG. 6 is a flowchart showing a filter detection process of the second embodiment in the drying operation.
  • the control unit 30 measures the The refrigerant temperature, which is the intermediate temperature of the first heat exchanger 27A, is set for a predetermined time (step S12). Then, the control unit 30 calculates ⁇ t indicating the degree of increase in the intermediate temperature of the first heat exchanger 27A within the predetermined time (step S13 ). ⁇ t corresponds to the slope in the equation representing the transition of the intermediate temperature of the first heat exchanger 27A.
  • ⁇ t is equal to or greater than a threshold value of, for example, 1 degree/minute (YES in step S14 )
  • the control unit 30 determines that the filter F2 is present in the air circulation path 20 , ends the filter detection process, and continues the drying operation.
  • the control unit 30 determines that there is no filter F2 in the air circulation path 20, and the notification unit 38 notifies that there is no filter F2 in the air circulation path 20 This case (step S15). Then, the control unit 30 ends the filter detection process and continues the drying operation.
  • control unit 30 In the filter detection process using the temperature change characteristic of the discharge path 28A, the control unit 30 also executes the processes of steps S11 to S15, but the threshold value in step S14 is set according to the change in the temperature of the discharge path 28A The resulting value of the property. The same applies to the filter detection process when the variation characteristics of the inlet temperature of the second heat exchanger 27B are used.
  • the control unit 30 may execute only the filter detection processing of one of the above-described first and second embodiments, or may execute the filter detection processing of both embodiments in parallel.
  • the control unit 30 determines that there is no filter in the air circulation path 20 F2 (steps S4 and S15).
  • the drying operation is started with the filter F2 attached to the air circulation path 20, the intermediate temperature of the first heat exchanger 27A, the temperature of the discharge path 28A, and the inlet temperature of the second heat exchanger 27B Compared with this, it has a tendency to continue to rise remarkably (refer FIG. 3). Therefore, the presence or absence of attachment of the filter F2 can be accurately determined by focusing on these temperatures.
  • the notification unit 38 notifies that there is no filter F2 in the air circulation path 20 (steps S4 and S15). Thereby, the user can be urged to attach the filter F2 to the air circulation path 20 .
  • control unit 30 may execute the filter detection process using the change characteristic of the air in the washing tub 3 in addition to the filter detection process in the case of using the change characteristic of the temperature of the refrigerant as described above.
  • the control unit 30 executes the processing of steps S1 to S4 or steps S11 to S15 as the filter detection processing using the changing characteristics of the air in the washing tub 3, but the predetermined time in steps S1 and S11 or the processing in steps S3 and S14
  • the threshold value is set as a value obtained from the change characteristics of the outlet temperature and the inlet temperature of the outer cylinder 7 .
  • this predetermined time it is set to 20 minutes, for example.
  • the threshold value in step S14 it is set to 1 degree/min, for example.
  • the control unit 30 may also determine that the air circulation path is the air circulation path. There is no filter F2 within 20. By paying attention not only to the temperature of the refrigerant of the heat pump 25 but also to the air temperature in the washing tub 3 in this way, the presence or absence of the attachment of the filter F2 can be determined at low cost.
  • the control unit 30 may execute the filter detection process using the current characteristics of the motor 21B as the filter detection process of the third embodiment.
  • FIG. 7 is a flowchart showing a filter detection process of the third embodiment in the drying operation.
  • a predetermined time such as 10 minutes elapses from the start of the drying operation, the rotational speed of the motor 21B is stabilized at, for example, 5000 rpm.
  • the control part 30 measures the electric current value of the motor 21B which continues to operate by the ammeter 37 (step S22). If the measured value is smaller than a threshold value of, for example, 290 mA (NO in step S23 ), the control unit 30 determines that there is a filter F2 in the air circulation path 20 , ends the filter detection process, and continues the drying operation.
  • the control unit 30 determines that there is no filter F2 in the air circulation path 20 , and the notification unit 38 informs that there is no filter in the air circulation path 20 In the case of F2 (step S24). Then, the control unit 30 ends the filter detection process and continues the drying operation.
  • Fig. 8 is a flowchart showing a drying operation.
  • the control unit 30 executes the filter detection process of at least one of the first and second embodiments described above, but may also execute the filter detection process of the third embodiment in parallel (step S31 ). ).
  • the control unit 30 executes an extension process for extending the drying operation (step S33 ).
  • the control unit 30 extends the operation time itself of the drying operation from the initially set operation time, for example, by 30 minutes.
  • the initial operation time is set according to the amount of laundry L at the start of the washing operation or the like.
  • the control unit 30 changes the drying end determination reference temperature that can determine the completion of the drying of the laundry L.
  • the drying completion judgment reference temperature a high limit temperature for the outlet temperature of the outer cylinder 7 and a temperature difference judgment temperature for the difference between the outlet temperature of the outer cylinder 7 and the inlet temperature of the outer cylinder 7 can be exemplified.
  • the outlet temperature of the outer tub 7 rises to the upper limit temperature or the difference between the outlet temperature of the outer tub 7 and the inlet temperature of the outer tub 7 is small to the temperature difference determination temperature, it can be determined that the laundry L is dried.
  • the control unit 30 increases the upper limit temperature by, for example, 3 degrees from the initial upper limit temperature, or lowers the temperature difference determination temperature by, for example, 3 degrees from the initial temperature difference determination temperature.
  • the initial temperature difference determination temperature is set according to the amount of laundry L at the start of the washing operation or the like.
  • the control unit 39 ends the drying operation.
  • the operation end condition is satisfied, the operation time has elapsed, the outlet temperature of the outer cylinder 7 has risen to the upper limit temperature, and the difference between the outlet temperature of the outer cylinder 7 and the inlet temperature of the outer cylinder 7 is as small as the temperature difference judgment temperature. condition.
  • step S32 when the control unit 30 determines that there is no filter F2 in the air circulation path 20 (YES in step S32 ), the drying operation is extended (step S33 ). Therefore, even when the laundry L in the washing tub 3 is not easily dried due to the absence of the filter F2 in the air circulation path 20, the laundry L can be completely dried.
  • the filter unit 22 provided with the filter F1, the branch path 23 involved in the maintenance of the filter F1, and the water injection valve 24 may be omitted.
  • the presence or absence of the filter F2 in the air circulation path 20 is detected mainly based on the temperature of the refrigerant. Even if there is a filter F2 in the air circulation path 20, the temperature change characteristic of the refrigerant is significantly different depending on whether or not the filter F2 is located at the above-mentioned attachment position, the air circulation path 20 can be detected based on the temperature of the refrigerant. Whether the filter F2 inside is in the attachment position. Thereby, it can judge whether the filter F2 is correctly attached to the air circulation path 20, and can urge a user to reattach the filter F2 by the notification of the notification part 38 as needed.
  • the filter detection process based on the temperature of the refrigerant is executed.
  • the filter detection process based on the air temperature in the washing tub 3 and the filter detection process of the third embodiment based on the current value of the motor 21B of the air blower 21 may be separately executed as the main filter detection. deal with.
  • the washing tub 3 may be arranged so that the axis J is inclined in the horizontal direction H.
  • the all-in-one washer-dryer 1 may also be a vertical all-in-one washer-dryer machine in which the axis J extends longitudinally.

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Abstract

一种洗干一体机(1)，包括：箱体(2)、洗涤筒(3)、空气循环路(20)、通过将洗涤筒(3)内的空气取出至空气循环路(20)内并返回至洗涤筒(3)内来使该空气循环的送风部(21)、热泵(25)、配置于空气循环路(20)内并能拆卸至箱体(2)外的过滤器(F2)、测定由热泵(25)的压缩机(26)进行了压缩的冷媒的温度的冷媒温度测量部(35)以及控制送风部(21)和热泵(25)来执行烘干运转的控制部(30)。在从烘干运转开始起经过规定时间后冷媒温度测量部(35)所测定到的温度或该温度的上升程度小于规定阈值的情况下，控制部(30)判断为空气循环路(20)内没有过滤器(F2)。

Description

洗干一体机 技术领域
本发明涉及一种洗干一体机。
背景技术
下述专利文献1所记载的洗干一体机包括：外箱、配置于外箱的内部的水筒、收容于水筒的内部的旋转滚筒以及用于向旋转滚筒的内部供给烘干风的烘干风路和送风单元。烘干风路包括与水筒一体形成的导出管道和导入管道。送风单元包括：与导出管道连结的连结管道、与连结管道连结的鼓鼓风扇、将鼓鼓风扇和导入管道相连的加热器以及装接于设置在连结管道的过滤器装接部的烘干过滤器。洗干一体机的烘干运转中，水筒内的空气随着鼓鼓风扇的驱动而流过导出管道和连结管道，被加热器加热成烘干风，从导入管道流入水筒内将旋转滚筒内的洗涤物烘干。烘干过滤器捕捉流过连结管道的空气中所含的尘埃。
烘干过滤器能从设置于过滤器装接部的上表面的开口拆下来。在过滤器装接部的附近设置有采集流过连结管道内的烘干风的声音来获取声音信号的集音部。在烘干过滤器装接于过滤器装接部的状态下的烘干运转中，烘干风路处于密闭状态且鼓鼓风扇发出的声音比较安静，因此，在连结管道内流动的烘干风的噪音等级比较低。另一方面，在烘干过滤器未装接于过滤器装接部的状态下的烘干运转中，连结管道内风路阻力变小而烘干风的风量变大，因此，在连结管道内流动的烘干风的噪音等级比较高。洗干一体机中，根据集音部所获取的声音信号的强度也就是噪音等级的差异来判断是否向过滤器装接部装接了烘干过滤器。
专利文献1所述的洗干一体机中，用于判断有无装接烘干过滤器的集音部昂贵，因此成本上升不可避免。
现有技术文献
专利文献
专利文献1：日本特开2014－42741号公报
发明内容
发明所要解决的问题
本发明是在该背景下完成的，其目的在于提供一种洗干一体机，其能低成本地判断有无装接烘干运转用的过滤器。
用于解决问题的方案
本发明是一种洗干一体机，包括：箱体；洗涤筒，配置于所述箱体内，收容洗涤物；空气循环路，配置于所述箱体内，包括与所述洗涤筒连接的取出口和返回口；送风部，将所述洗涤筒内的空气从所述取出口取出至所述空气循环路内并从所述返回口返回至所述洗涤筒内，由此使该空气循环；热泵，包括：压缩机，压缩冷媒；热交换器，配置于所述空气循环路内，在冷媒与所述空气循环路内的空气之间进行热交换；以及冷媒循环路，使冷媒在所述压缩机与所述热交换器之间循环；过滤器，配置于所述空气循环路内，从所述空气循环路内的空气中捕获异物；冷媒温度测量部，测定由所述压缩机进行了压缩的冷媒的温度；控制部，通过控制所述送风部和所述热泵来执行将所述洗涤筒内的洗涤物烘干的烘干运转；第一门，对设置于所述空气循环路的第一拆装口进行开闭；以及第二门，对设置于所述箱体的第二拆装口进行开闭，其中，所述过滤器能经过所述第一拆装口和所述第二拆装口从所述空气循环路拆卸至所述箱体外，在从所述烘干运转开始起经过规定时间后所述冷媒温度测量部所测定到的温度或者该温度的上升程度小于规定阈值的情况下，所述控制部判断为所述空气循环路内没有所述过滤器。
此外，本发明的特征在于，所述热交换器包括：第一热交换器，被由所述压缩机进行了压缩的冷媒加热；以及第二热交换器，被经过了所述第一热交换器的冷媒冷却，所述冷媒循环路包括：吐出路，将由所述压缩机进行了压缩的冷媒导向所述第一热交换器；以及返回路，将冷媒从所述第二热交换器导向所述压缩机，所述冷媒温度测量部所测定的温度是所述第一热交换器中冷媒的流 路的温度或所述吐出路的温度。
此外，本发明的特征在于，所述洗干一体机还包括测定所述洗涤筒内的空气温度的空气温度测量部，在从所述烘干运转开始起经过规定时间后所述空气温度测量部所测定到的温度或该温度的上升程度小于规定阈值的情况下，所述控制部也判断为所述空气循环路内没有所述过滤器。
此外，本发明的特征在于，所述洗干一体机还包括：告知部，在所述控制部判断为所述空气循环路内没有所述过滤器的情况下，告知所述空气循环路内没有所述过滤器这一情况。
此外，本发明的特征在于，所述控制部在判断为所述空气循环路内没有所述过滤器的情况下延长所述烘干运转。
发明效果
根据本发明，在洗干一体机的烘干运转中，洗涤筒内的空气随着送风部工作而以从被取出口取出至空气循环路内并从返回口返回洗涤筒内的方式进行循环。循环的空气通过在烘干循环路内与热泵的热交换器之间的热交换而被加热成热风，将洗涤筒内的洗涤物烘干。配置于空气循环路内的过滤器从空气循环路内的空气中捕获异物。
使用者能打开第一门和第二门来使空气循环路的第一拆装口和箱体的第二拆装口敞开，将空气循环路内的过滤器从第一拆装口和第二拆装口拆卸至箱体外进行维护。当使用者使过滤器从第一拆装口和第二拆装口返回至空气循环路内并关闭第一门和第二门时，过滤器向空气循环路的装接完成。
在使用热泵的洗干一体机中，如果在空气循环路中装接有过滤器的状态下开始烘干运转，则热泵中由压缩机进行了压缩的冷媒的温度会持续上升，因此，从烘干运转开始起经过规定时间后的冷媒的温度或该温度的上升程度会达到各自确定的规定阈值以上。因此，洗干一体机中，在从烘干运转开始起经过规定时间后冷媒温度测量部所测定到的该冷媒的温度或该温度的上升程度小于规定阈值的情况下，控制部判断为空气循环路内没有过滤器。通过像这样着眼于热泵的冷媒的温度，即使不采用用于检测有无装接过滤器的昂贵的结构，也能低成本地判断有无装接烘干运转用的过滤器。需要说明的是，冷媒温度测量部所 测定的冷媒的温度既可以是冷媒自身的温度，也可以是冷媒流过的流路的温度。
此外，根据本发明，热交换器包括：第一热交换器，被由压缩机进行了压缩的冷媒加热；以及第二热交换器，被经过了第一热交换器的冷媒冷却，冷媒循环路包括：吐出路，将由压缩机进行了压缩的冷媒导向第一热交换器；以及返回路，将冷媒从第二热交换器导向压缩机。如果在空气循环路中装接有过滤器的状态下开始烘干运转，则第一热交换器中冷媒的流路的温度、吐出路的温度会有显著持续上升的倾向，因此，能通过着眼于这些温度来正确地判断有无装接过滤器。
此外，根据本发明，洗干一体机中，如果在空气循环路中装接有过滤器的状态下开始烘干运转，则洗涤筒内的空气温度会持续上升，因此，从烘干运转开始起经过规定时间后的空气温度或该温度的上升程度会达到规定阈值以上。因此，洗干一体机中，在从烘干运转开始起经过规定时间后空气温度测量部所测定到的该空气温度或该温度的上升程度小于规定阈值的情况下，控制部也判断为空气循环路内没有过滤器。能通过像这样不仅着眼于热泵的冷媒的温度还着眼于洗涤筒内的空气温度来低成本地判断有无装接过滤器。
此外，根据本发明，洗干一体机中，在控制部判断为空气循环路内没有过滤器的情况下，告知部会告知该情况，因此，能督促使用者向空气循环路装接过滤器。
此外，根据本发明，控制部在判断为空气循环路内没有过滤器的情况下会延长烘干运转，因而即使在因空气循环路内没有过滤器而使得洗涤筒内的洗涤物难以烘干的情况下，也能将洗涤物完全烘干。
附图说明
图1是本发明的一个实施方式的洗干一体机的示意性纵剖右视图。
图2是表示洗干一体机的电气结构的框图。
图3是表示处于装接有过滤器的状态的洗干一体机的烘干运转中各测定位置的温度的经时变化的时序图。
图4是表示未装接过滤器的状态下的烘干运转中各测定位置的温度的经时变化的时序图。
图5是表示烘干运转中的第一实施例的过滤器检测处理的流程图。
图6是表示第二实施例的过滤器检测处理的流程图。
图7是表示第三实施例的过滤器检测处理的流程图。
图8是表示烘干运转的流程图。
附图标记说明
1：洗干一体机；2：箱体；2E：第二拆装口；3：洗涤筒；20：空气循环路；20D：取出口；20E：返回口；20G：第一拆装口；21：送风部；25：热泵；26：压缩机；27：热交换器；27A：第一热交换器；27B：第二热交换器；27F：流路；28：冷媒循环路；28A：吐出路；28B：返回路；30：控制部；31：第一门；32：第二门；35：冷媒温度测定部；36：空气温度测定部；38：告知部；F2：过滤器；L：洗涤物。
具体实施方式
以下，参照附图对本发明的实施方式进行具体说明。图1是本发明的一个实施方式的洗干一体机1的示意性纵剖右视图。将图1的与纸面正交的方向称为洗干一体机1的左右方向X，将图1中的左右方向称为洗干一体机1的前后方向Y，将图1中的上下方向称为洗干一体机1的上下方向Z。左右方向X当中，将图1的纸面的里侧称为左侧X1，将图1的纸面的表侧称为右侧X2。前后方向Y当中，将图1中的左侧称为前侧Y1，将图1中的右侧称为后侧Y2。上下方向Z当中，将上侧称为上侧Z1，将下侧称为下侧Z2。
洗干一体机1包括：箱体2、配置于箱体2内的洗涤筒3、与洗涤筒3连接的供水路4和排水路5以及捕获经过排水路5从洗涤筒3排出的水中的异物的排水过滤器6。洗涤筒3包括外筒7和收容于外筒7内的滚筒8。因此，洗干一体机1为所谓的滚筒式洗干一体机。洗干一体机1包括使滚筒8旋转的马达9和将收容于滚筒8内的洗涤物L烘干的烘干单元10。
箱体2形成为箱状。箱体2具有垂直延伸的前壁2A、从前壁2A的上端向后侧Y2水平延伸的顶壁2B以及从前壁2A的下端向后侧Y2水平延伸的底壁2C。在前壁2A形成有使箱体2的内外连通的开口2D。在前壁2A设置有对开口2D进行开闭的门11。
外筒7与从箱体2的底壁2C向上侧Z1延伸的减震器(shock absorber)12的上端连结。由此，包括外筒7和滚筒8的整个洗涤筒3经由减震器12由底壁2C弹性支承。外筒7具有以沿水平方向H向前后方向Y延伸的轴线J为中心的圆筒状的圆周壁7A、从后侧Y2堵住圆周壁7A的中空部分的圆盘状的背面壁7B以及与圆周壁7A的前端缘相连的环状的正面壁7C。
背面壁7B被垂直配置，具有圆环状的外周部7D和比外周部7D向后侧Y2突出一段的圆筒状的中央部7E。在中央部7E的中心形成有沿轴线J在前后方向Y上贯通中央部7E的贯通孔7F。正面壁7C具有：从圆周壁7A的前端缘向轴线J侧突出的圆环状的第一部7G、从第一部7G的内周缘向前侧Y1突出的圆筒状的第二部7H以及从第二部7H的前端缘向轴线J侧突出的圆环状的第三部7I。在第三部7I的内侧形成有从前侧Y1与圆周壁7A的中空部分连通的出入口7J。出入口7J从后侧Y2与箱体2的开口2D对置并连通。
供水路4具有与水龙头(未图示)连接的一端(未图示)和与外筒7的背面壁7B中的例如中央部7E连接的另一端4A。供水时，来自水龙头的水从供水路4供给至外筒7内。外筒7内蓄留自来水、自来水中溶解有洗涤剂的洗涤剂水等水。在供水路4的中途设置有为了开始或停止供水而被开闭的供水阀13。
排水路5与外筒7的下端部例如正面壁7C的第一部7G的下端部连接。外筒7内的水从排水路5排出机外。在排水路5的中途设置有为了开始或停止排水而被开闭的排水阀14。
排水过滤器6设置于排水路5中比排水阀14靠近外筒7的上游部。由于排水过滤器6的前端从箱体2的前壁2A向前侧Y1露出，因而使用者能抓住排水过滤器6的前端将排水过滤器6拆装于箱体2。排水过滤器6的结构能使用公知的结构。
滚筒8比外筒7小一圈。滚筒8具有：与外筒7的圆周壁7A同轴配置的圆 筒状的圆周壁8A、从后侧Y2堵住圆周壁8A的中空部分的圆盘状的背面壁8B以及从圆周壁8A的前端缘向轴线J侧突出的圆环状的环状壁8C。在滚筒8中至少于圆周壁8A形成有多个贯通孔8D，外筒7内的水经由贯通孔8D在外筒7与滚筒8之间往来。由此，外筒7内的水位与滚筒8内的水位一致。在滚筒8的背面壁8B的中心设置有沿轴线J向后侧Y2延伸的支承轴15。支承轴15的后端部穿过外筒7的背面壁7B的贯通孔7F而配置于背面壁7B的后侧Y2。
在环状壁8C的内侧形成有从前侧Y1与圆周壁8A的中空部分连通的出入口8E。出入口8E从后侧Y2与外筒7的出入口7J及箱体2的开口2D对置并连通。出入口7J和出入口8E与开口2D一起通过门11被一并开闭。洗干一体机1的使用者经由敞开的开口2D、出入口7J以及出入口8E向滚筒8内投取洗涤物L。
马达9为具有与外筒7的背面壁7B的中央部7E大致相同的外径的圆盘状，在箱体2内配置于中央部7E的后侧Y2并固定于中央部7E。马达9与设置于滚筒8的支承轴15连结。马达9所产生的驱动力传递至支承轴15，滚筒8随着支承轴15绕轴线J被旋转驱动。需要说明的是，可以在马达9与支承轴15之间设置将马达9的驱动力向支承轴15传递或切断的离合机构(未图示)。
烘干单元10包括用于使洗涤筒3内的空气循环的空气循环路20和送风部21、用于从循环的空气中捕获异物的过滤单元22、用于维护过滤单元22的分支路23和注水阀24以及对循环的空气进行加热或除湿的热泵25。
空气循环路20为在箱体2内配置于外筒7的周边的流路。空气循环路20具有：在比外筒7高的位置沿前后方向Y延伸的中途部分20A、从中途部分20A的后端向下侧Z2延伸的后部分20B以及从中途部分20A的前端向下侧Z2延伸的前部分20C。在后部分20B的下端部的前端形成有取出口20D。取出口20D与外筒7的背面壁7B的外周部7D中比上限水位高的部分连接，从后侧Y2与外筒7内连通。在前部分20C的下端形成有返回口20E。返回口20E与外筒7的正面壁7C的第二部7H的上端部连接，从上侧Z1与外筒7内连通。将外周部7D中与取出口20D连接的开口称为出口7K，将正面壁7C中与返回口20E连接的开口称为入口7L。
送风部21是鼓风扇，包括配置于空气循环路20的中途部分20A内靠近取 出口20D的上游侧的区域的旋转叶片21A和使旋转叶片21A旋转的电动马达21B。当旋转叶片21A旋转时，洗涤筒3内的空气也就是外筒7内和滚筒8内的空气如粗虚线箭头所示，在从取出口20D也就是出口7K被取出至空气循环路20内之后从返回口20E也就是入口7L返回至洗涤筒3内。由此，洗涤筒3内的空气以按顺序流过洗涤筒3和空气循环路20的方式循环。
过滤单元22配置于空气循环路20内比旋转叶片21A靠近取出口20D的上游侧的区域，详细而言配置于后部分20B内。过滤单元22包括单个或多个过滤器F1。过滤器F1是由网眼片和支承该网眼片的框构成的烘干过滤器。过滤器F1以纵向延伸的姿势配置于流过空气循环路20的空气所经过的位置。在设置有多个过滤器F1的情况下，这些过滤器F1以与空气循环路20中的空气的流动方向重叠的方式配置。当为了循环而从取出口20D被取出并在空气循环路20内流动的空气经过过滤器F1时，该空气中所含的碎线等异物被过滤器F1捕获。
分支路23从供水路4中比供水阀13靠近水龙头的上游部分支并与过滤单元22连接。注水阀24设置于分支路23，为了开始或停止向过滤单元22的过滤器F1注水而被开闭。当注水阀24打开时，来自供水路4的水经过分支路23被供给至过滤单元22，从上侧Z1注入过滤器F1。由此，被过滤器F1捕获的异物从过滤器F1剥落，从空气循环路20的取出口20D落到外筒7内，被排水过滤器6捕获。被排水过滤器6捕获的异物在使用者于适当的时机将排水过滤器6拆下来进行维护时被去除。
热泵25包括：压缩冷媒的压缩机26、在冷媒与空气循环路20内的空气之间进行热交换的热交换器27以及使冷媒在压缩机26与热交换器27之间循环的冷媒循环路28。
可以采用公知的电动压缩机来作为压缩机26。压缩机26例如配置于比滚筒8的旋转轴线即轴线J低的位置并固定于箱体2的底壁2C。
热交换器27配置于空气循环路20的中途部分20A内比送风部21的旋转叶片21A靠近返回口20E的下游侧，具体而言前侧Y1的区域。热交换器27包括：加热侧的作为冷凝器的第一热交换器27A、冷却侧的作为蒸发器的第二热交换器27B以及将第一热交换器27A和第二热交换器27B相连的毛细管27C。
本实施方式中，第一热交换器27A配置于中途部分20A内比第二热交换器27B靠下游侧也就是前侧Y1处。在第一热交换器27A设置有多个散热翅片27D，在第二热交换器27B设置有多个冷却翅片27E。在第一热交换器27A的内部设置有冷媒的流路27F，在第二热交换器27B的内部设置有冷媒的流路27G。流路27F和流路27G分别是铝等金属制的管。多个散热翅片27D配置于流路27F的周围。多个冷却翅片27E配置于流路27G的周围。毛细管27C将流路27F和流路27G相连。
冷媒循环路28由铝等金属制的管构成，将压缩机26和热交换器27相连。冷媒循环路28是从压缩机26取出冷媒之后使其经过热交换器27再次返回压缩机26的循环流路。冷媒循环路28包括将由压缩机26进行了压缩的冷媒导向第一热交换器27A内的流路27F的吐出路28A。冷媒循环路28还包括将从第一热交换器27A经由毛细管27C流过第二热交换器27B的流路27G的冷媒从第二热交换器27B导向压缩机26的返回路28B。可以将流路27F看作吐出路28A的一部分，也可以将流路27G看作返回路28B的一部分。
洗干一体机1还包括由搭载有内置计时器的微型计算机的基板构成的控制部30。在控制部30电连接有马达9、烘干单元10、供水阀13、排水阀14以及注水阀24等电气部件(也参照图2)。控制部30通过控制这些电气部件的工作来执行洗涤烘干运转。洗涤烘干运转包括清洗过程、漂洗过程、脱水过程以及烘干过程。烘干过程也可以作为单独的烘干运转而在洗涤烘干运转之外执行。以下的说明中，烘干过程和烘干运转相同。
在清洗过程开始之前，滚筒8内被投入洗涤剂。在清洗过程中，控制部30在关闭排水阀14的状态下在将供水阀13打开规定时间向外筒7和滚筒8供水之后通过马达9使滚筒8旋转。由此，滚筒8内的洗涤物L被摔洗。摔洗中，洗涤物L被反复进行提升一定程度之后向水面自然落下的“翻滚”。通过翻滚所产生的冲击、蓄于滚筒8的洗涤剂水中所含的洗涤剂成分从洗涤物L中去除污垢。当控制部30在从翻滚开始起经过规定时间之后打开排水阀14进行排水时，清洗过程结束。
在漂洗过程中，控制部30在关闭排水阀14的状态下在将供水阀13打开规定时间向外筒7和滚筒8供水之后通过马达9使滚筒8旋转。这样，由于反复 进行上述的翻滚，因而洗涤物L通过滚筒8内的自来水被漂洗。当控制部30在从翻滚开始起经过规定时间之后进行排水时，漂洗过程结束。可以反复进行多次漂洗过程。在脱水过程中，控制部30在打开排水阀14的状态下使滚筒8脱水旋转。滚筒8内的洗涤物L通过由滚筒8的脱水旋转产生的离心力而被脱水。通过脱水而从洗涤物L渗出的水从排水路5排出机外。可以是，脱水过程不仅在漂洗过程之后实施，在清洗过程之后也实施。
在烘干过程中，控制部30通过使送风部21和热泵25的压缩机26工作来产生热风并使热风在滚筒8与空气循环路20之间循环而供给至滚筒8内的洗涤物L。具体而言，在热泵25中，冷媒通过被压缩机26压缩而变为高温高压，之后在经由吐出路28A在第一热交换器27A内的流路27F中经过时散热。在第一热交换器27A中，散热翅片27D由于经过流路27F的冷媒的散热而被加热为高温。经过了第一热交换器27A的冷媒在经过毛细管27C时被减压而变为低温，然后在经过第二热交换器27B内的流路27G时将冷却翅片27E冷却。
烘干过程中的空气循环路20内的空气在于空气循环路20内经过第二热交换器27B的冷却翅片27E的周围时被除湿。被除湿的空气在经过第一热交换器27A的散热翅片27D的周围时被加热而变成热风。也就是说，空气循环路20内的空气通过与流过第一热交换器27A的冷媒之间的热交换而变成热风。该热风从外筒7的入口7L流入外筒7内而供给至滚筒8内的洗涤物L，由此烘干洗涤物L。这时，控制部30也可以使马达9工作而使滚筒8旋转。由此，能无死角地对洗涤物L吹拂热风。
碎线等异物在烘干过程中随着热风流动，如上所述被过滤单元22的过滤器F1捕获。在烘干过程中或烘干过程后的适当的时机，作为维护处理，控制部30打开注水阀24向过滤器F1注水，从过滤器F1去除异物。
洗干一体机1还包括用于捕获空气循环路20内过滤器F1未捕获完的异物的过滤器F2。存在单个或多个过滤器F2。过滤器F2与过滤器F1同样是由网眼片和支承该网眼片的框构成的烘干过滤器。过滤器F2在空气循环路20的中途部分20A内例如配置于送风部21的旋转叶片21A与热交换器27之间。过滤器F2以横切流过空气循环路20的空气的方式，例如纵向延伸的姿势配置。在设置有多个过滤器F2的情况下，这些过滤器F2以与空气循环路20中的空气的流动 方向重叠的方式配置。
过滤器F1如上所述无需取下来就能自动维护，但是过滤器F2需要取下来定期维护。因此，在空气循环路20的中途部分20A中的顶壁20F设置有从上侧Z1面向过滤器F2的第一拆装口20G。在箱体2的顶壁2B中第一拆装口20G的正上方的位置设置有第二拆装口2E。第一拆装口20G和第二拆装口2E分别为具有供过滤器F2穿过的大小的开口。
洗干一体机1还包括开闭第一拆装口20G的第一门31和开闭第二拆装口2E的第二门32。第一门31例如经由铰链部33与空气循环路20的顶壁20F连结，从而能绕铰链部33转动。第二门32也例如经由铰链部34与箱体2的顶壁2B连结，从而能绕铰链部34转动。
使用者能通过将第一门31和第二门32向上侧Z1转动来敞开第一拆装口20G和第二拆装口2E，使空气循环路20内的过滤器F2经过第一拆装口20G和第二拆装口2E从空气循环路20取出至箱体2外来进行过滤器F2的清扫等维护。使用者使取出的过滤器F2从第一拆装口20G和第二拆装口2E返回空气循环路20内，通过将第一门31和第二门32向下侧Z2转动来关闭第一拆装口20G和第二拆装口2E。由此，过滤器F2向空气循环路20的装接完成。在空气循环路20内设置有将过滤器F2定位的定位部(未图示)。而且，第一门31和第二门32也可以一体化为将第一拆装口20G和第二拆装口2E一并开闭的一个门。也就是说，第一门31和第二门32的一方可以兼作另一方。
以下，在第一拆装口20G和第二拆装口2E关闭的状态下，将以横切流过空气循环路20的空气的方式被定位于空气循环路20内的规定的装接位置时的过滤器F2称为处于装接于空气循环路20状态的过滤器F2。另一方面，将位于空气循环路20外的过滤器F2称为不在空气循环路20内的过滤器F2也就是非装接状态的过滤器F2。在空气循环路20内没有过滤器F2的情况下，第一拆装口20G和第二拆装口2E既可以是关闭状态也可以是打开状态。
在像这样能从空气循环路20向箱体2外拆下来的过滤器F2的情况下，设想使用者会忘记使拆下来的过滤器F2回到空气循环路20中。当在空气循环路20内没有过滤器F2的状态下执行烘干运转时，会因异物附着于热交换器27等情况而使热交换器27与空气循环路20内的空气之间的热交换变慢，因此，洗 涤物L的烘干效率可能会降低。进而，如果第一拆装口20G和第二拆装口2E一直敞开着，则空气循环路20内的空气会从这些拆装口泄漏，从而从空气循环路20内供给至洗涤物L的热风的风量会减弱，因此，洗涤物L的烘干效率可能会进一步降低。如果洗涤物L的烘干效率降低，则截止到洗涤物L烘干完成为止会花费时间，因此，可能会导致耗电、烘干运转变多。
这样，过滤器F2需要在烘干运转时处在装接于空气循环路20的状态，但是在第一门31和第二门32关闭的状态下，使用者无法从洗干一体机1外目视确认空气循环路20中有无过滤器F2。因此，控制部30在烘干过程中执行检测空气循环路20中有无过滤器F2的过滤器检测处理。与过滤器检测处理关连地，洗干一体机1还包括：测定热泵25中由压缩机26进行了压缩的冷媒的温度的冷媒温度测量部35、测定洗涤筒3内的空气温度的空气温度测定部36、测定流过送风部21的马达21B的电流值的电流计37以及告知部38(也参照图2)。
冷媒温度测量部35包括均由热敏电阻构成的第一温度计41、第二温度计42以及第三温度计43。第一温度计41装配于热泵25的吐出路28A，测定吐出路28A的表面温度。吐出路28A的表面温度与在吐出路28A内流动的冷媒的温度几乎相同，因此被视作冷媒的温度。第一温度计41也可以露出到吐出路28A内来测定吐出路28A内的冷媒自身的温度。
第二温度计42装配于热泵25的第一热交换器27A也就是冷凝器的流路27F的中间部分，测定该中间部分的表面温度。流路27F的表面温度与在流路27F内流动的冷媒的温度几乎相同，因此被视作冷媒的温度。第二温度计42也可以露出到流路27F内来测定流路27F内的冷媒自身的温度。
第三温度计43装配于热泵25的第二热交换器27B也就是蒸发器的流路27G中与毛细管27C相连的入口部分，测定该入口部分的表面温度。流路27G的表面温度与在流路27G内流动的冷媒的温度几乎相同，因此被视作冷媒的温度。第三温度计43也可以露出到流路27G内来测定流路27G的入口部分内的冷媒自身的温度。
以下，将第一温度计41所测量的温度称为“吐出路28A的温度”，将第二温度计42所测量的温度称为“第一热交换器27A的中间温度”，将第三温度计43所测量的温度称为“第二热交换器27B的入口温度”。第一温度计41、第二 温度计42以及第三温度计43的测定结果即“吐出路28A的温度”、“第一热交换器27A的中间温度”以及“第二热交换器27B的入口温度”分别被实时地输入控制部30。
空气温度测定部36包括均由热敏电阻构成的第四温度计44和第五温度计45。第四温度计44装配于外筒7的出口7K附近，测定口7K中的空气温度。第五温度计45装配于外筒7的入口7L附近，测定入口7L中的空气温度。以下，将第四温度计44所测量的温度称为“外筒7的出口温度”，将第五温度计45所测量的温度称为“外筒7的入口温度”。第四温度计44和第五温度计45的测定结果即“外筒7的出口温度”和“外筒7的入口温度”分别被实时地输入控制部30。
能采用公知的电流计作为电流计37。电流计37的测定结果被实时地输入控制部30。告知部38既可以是设置于箱体2的前壁2A的液晶触摸面板的显示部，也可以是内置于箱体2的蜂鸣器。
图3是表示空气循环路20内装接有过滤器F2的状态下的烘干运转中各个测定位置的温度的经时变化的时序图。图4是表示过滤器F2从空气循环路20取出状态下的烘干运转中各个测定位置的温度的经时变化的时序图。图3和图4各自的时序图中，横轴表示经过时间，纵轴分别表示“吐出路28A的温度”、“第一热交换器27A的中间温度”、“第二热交换器27B的入口温度”、“外筒7的出口温度”以及“外筒7的入口温度”。经过时间的单位为“分钟”，温度的单位为“度”。
由热泵25的压缩机26进行了压缩的冷媒的温度随着依次经过吐出路28A、第一热交换器27A以及第二热交换器27B而降低，因此，吐出路28A的温度比第一热交换器27A的中间温度高，第一热交换器27A的中间温度比第二热交换器27B的入口温度高。循环的空气从外筒7的出口7K流入空气循环路20被第一热交换器27A加热后，从外筒7的入口7L流入外筒7内，因此，外筒7的入口温度比外筒7的出口温度高。
图3表示在空气循环路20中装接有过滤器F2的状态下开始的烘干运转中的测定结果。这种情况下，虽然吐出路28A的温度、第一热交换器27A的中间温度、第二热交换器27B的入口温度、外筒7的出口温度以及外筒7的入口温 度各自从烘干运转开始起10分钟内不稳定，但是从烘干运转开始起经过10分钟后，随着送风部21和热泵25的工作而一直上升。因此，这些温度是体现烘干运转的状态的指标。进而，第一热交换器27A的中间温度、吐出路28A的温度也是指示压缩机26的状态的指标，因此，当这些温度达到规定的上限值时，控制部30会为了保护压缩机26而中止烘干运转。
图4表示在空气循环路20内没有过滤器F2且空气循环路20的第一拆装口20G和箱体2的第二拆装口2E打开的状态下开始的烘干运转中的测定结果。在使用者忘记使过滤器F2回到空气循环路20中而直接开始烘干运转的情况下，虽然吐出路28A的温度和第一热交换器27A的中间温度各自从烘干运转开始起30分钟内会上升，但是从烘干运转开始起经过30分钟后会饱和而不再上升。这种情况下，吐出路28A的温度不会达到60度，第一热交换器27A的中间温度连45度都达不到。第二热交换器27B的入口温度从烘干运转开始起几乎不上升，连20度都达不到。
而且，虽然外筒7的出口温度和外筒7的入口温度根子从烘干运转开始起20分钟内会上升，但是由于会发生外部空气在第一拆装口20G、第二拆装口2E处的出入，从烘干运转开始起经过20分钟后这些温度会饱和而不再上升。这种情况下，外筒7的入口温度不会达到55度，外筒7的出口温度连30度都达不到。
像这样，吐出路28A的温度、第一热交换器27A的中间温度、第二热交换器27B的入口温度、外筒7的出口温度以及外筒7的入口温度各自的变化特性因空气循环路20内有无过滤器F2而异。特别是，在使用了热泵25的洗干一体机1中，如果在循环路20中装接有过滤器F2的状态下开始烘干运转，则由热泵25中的压缩机26进行了压缩的冷媒的温度会持续上升。因此，从烘干运转开始起经过规定时间后的冷媒的温度或该温度的上升程度为后面叙述的规定阈值以上。因此，控制部30执行主要利用了这样的冷媒的变化特性的过滤器检测处理。
图5是表示烘干运转中的第一实施例的过滤器检测处理的流程图。在利用第一热交换器27A的中间温度的变化特性的情况下，当从烘干运转开始起经过了上述的30分钟这一规定时间时(步骤S1中为“是”)，控制部30会测定第 一热交换器27A的中间温度这一冷媒温度(步骤S2)。如果该测定值为例如60度这一阈值以上(步骤S3中为“是”)，则控制部30判断空气循环路20内有过滤器F2并结束过滤器检测处理，继续烘干运转。该阈值根据第一热交换器27A的中间温度的变化特性(参照图3)事先得出并存储于控制部30的存储器(未图示)。后面叙述的其他阈值也一样。
另一方面，如果第一热交换器27A的中间温度的相关测定值小于阈值(步骤S3中为“否”)，则控制部30判断为空气循环路20内没有过滤器F2，并通过告知部38告知空气循环路20内没有过滤器F2这一情况(步骤S4)。然后，控制部30结束过滤器检测处理，继续烘干运转。
在利用吐出路28A的温度的变化特性的情况下的过滤器检测处理中，控制部30也执行步骤S1～S4的处理，但是步骤S3中的阈值被设定为根据吐出路28A的温度的变化特性所得的值，例如65度。在利用第二热交换器27B的入口温度的变化特性的情况下的过滤器检测处理中，控制部30也执行步骤S1～S4的处理，但是步骤S3中的阈值被设定为根据第二热交换器27B的入口温度的变化特性所得的值，例如25度。
图6是表示烘干运转中的第二实施例的过滤器检测处理的流程图。在利用第一热交换器27A的中间温度的变化特性的情况下，当从烘干运转开始起经过了上述的30分钟这一规定时间时(步骤S11中为“是”)，控制部30测定第一热交换器27A的中间温度这一冷媒温度规定时间(步骤S12)。然后，控制部30计算出表示该规定时间内的第一热交换器27A的中间温度的上升程度的Δt(步骤S13)。Δt相当于体现第一热交换器27A的中间温度的变迁的方程式中的斜率。
如果Δt为例如1度/分种这一阈值以上(步骤S14中为“是”)，则控制部30判断为空气循环路20内有过滤器F2并结束过滤器检测处理，继续烘干运转。另一方面，如果该测定值小于阈值(步骤S14中为“否”)，则控制部30判断为空气循环路20内没有过滤器F2，通过告知部38告知空气循环路20内没有过滤器F2这一情况(步骤S15)。然后，控制部30结束过滤器检测处理，继续烘干运转。
在利用吐出路28A的温度的变化特性的情况下的过滤器检测处理中，控制 部30也执行步骤S11～S15的处理，但是步骤S14中的阈值被设定为根据吐出路28A的温度的变化特性所得的值。利用第二热交换器27B的入口温度的变化特性的情况下的过滤器检测处理中也一样。
在烘干运转中，控制部30既可以只执行以上的第一实施例和第二实施例中的某个实施例的过滤器检测处理，也可以并行执行两个实施例的过滤器检测处理。总之，在从烘干运转开始起经过规定时间后冷媒温度测量部35所测定到的温度或该温度的上升程度Δt小于规定阈值的情况下，控制部30判断为空气循环路20内没有过滤器F2(步骤S4和S15)。通过这样着眼于热泵25的冷媒的温度，即使不采用用于检测有无装接过滤器F2的昂贵的传感器等，也能低成本地正确判断有无装接烘干运转用的过滤器F2。
特别是，如果在空气循环路20中装接有过滤器F2的状态下开始烘干运转，则第一热交换器27A的中间温度、吐出路28A的温度与第二热交换器27B的入口温度相比具有显著地持续上升的倾向(参照图3)。因此，能通过着眼于这些温度来正确地判断有无装接过滤器F2。
而且，在控制部30判断为空气循环路20内没有过滤器F2的情况下，告知部38告知空气循环路20内没有过滤器F2这一情况(步骤S4和S15)。由此，能督促使用者向空气循环路20装接过滤器F2。
如上所述，洗干一体机1中，如果在空气循环路20中装接有过滤器F2的状态下开始烘干运转，则循环的空气会被热交换器27反复加热，由此洗涤筒3内的空气温度会持续上升(参照图3)。由此，从烘干运转开始起经过规定时间后的空气温度或该温度的上升程度为规定阈值以上。
因此，除了如上所述利用冷媒的温度的变化特性的情况下的过滤器检测处理之外，控制部30也可以执行利用了洗涤筒3内的空气的变化特性的过滤器检测处理。作为利用了洗涤筒3内的空气的变化特性的过滤器检测处理，控制部30执行步骤S1～S4或步骤S11～S15的处理，但是步骤S1、S11中的规定时间或步骤S3、S14中的阈值被设定为根据外筒7的出口温度、入口温度的变化特性所得的值。作为该规定时间的一例，例如设定为20分钟。作为步骤S14中的阈值的一例，例如设定为1度/分钟。
也可以是，在像这样从烘干运转开始起经过规定时间后空气温度测定部36所测定到的温度或该温度的上升程度Δt小于规定阈值的情况下，控制部30也判断为空气循环路20内没有过滤器F2。通过这样不仅着眼于热泵25的冷媒的温度还着眼于洗涤筒3内的空气温度，能低成本地判断有无装接过滤器F2。
在空气循环路20内没有过滤器F2的情况下，空气循环路20内的空气阻力会降低，因此，送风部21的马达21B的电流值会有增大的倾向。因此，控制部30也可以将利用了这样的马达21B的电流特性的过滤器检测处理作为第三实施例的过滤器检测处理来执行。
图7是表示烘干运转中的第三实施例的过滤器检测处理的流程图。当从烘干运转开始起经过了例如10分钟这一规定时间时，马达21B的转速稳定在例如5000rpm。这种情况下(步骤S21中为“是”)，控制部30通过电流计37来测定继续工作中的马达21B的电流值(步骤S22)。如果该测定值小于例如290mA这一阈值(步骤S23中为“否”)，则控制部30判断为空气循环路20内有过滤器F2并结束过滤器检测处理，继续烘干运转。另一方面，如果该测定值为阈值以上(步骤S23中为“是”)，则控制部30判断为空气循环路20内没有过滤器F2，通过告知部38告知空气循环路20内没有过滤器F2这一情况(步骤S24)。然后，控制部30结束过滤器检测处理，继续烘干运转。
图8是表示烘干运转的流程图。在烘干运转中，控制部30执行上述第一实施例和第二实施例中至少任意一个实施例的过滤器检测处理，但是也可以还并行执行第三实施例的过滤器检测处理(步骤S31)。控制部30在过滤器检测处理中判断为空气循环路20内没有过滤器F2的情况下(步骤S32中为“是”)，执行用于延长烘干运转的延长处理(步骤S33)。作为延长处理的一例，控制部30将烘干运转的运转时间本身从最初设定的运转时间延长例如30分钟。最初的运转时间在洗涤运转开始时等根据洗涤物L的量来设定。
作为延长处理的一例，控制部30变更能判断洗涤物L烘干结束的烘干结束判断基准温度。作为烘干结束判断基准温度，可以例举出关于外筒7的出口温度的上限(high limit)温度、关于外筒7的出口温度与外筒7的入口温度之差的温度差判定温度。当外筒7的出口温度上升至上限温度或外筒7的出口温度与外筒7的入口温度之差小到温度差判定温度时，可以判断为洗涤物L烘干结束。 作为延长处理的一例，控制部30将上限温度从最初的上限温度设高例如3度或将温度差判定温度从最初的温度差判定温度设低例如3度。最初的温度差判定温度在洗涤运转开始时等根据洗涤物L的量来设定。当像这样通过延长处理变更了烘干结束判断基准温度时，烘干运转的运转时间实质上被延长。
而且，无论有无延长处理，在满足运转结束条件的情况下(步骤S34中为“是”)，控制部39都会结束烘干运转。满足运转结束条件的情况是指经过了运转时间的情况、外筒7的出口温度上升至上限温度的情况、外筒7的出口温度与外筒7的入口温度之差小到温度差判定温度的情况。
这样，控制部30在判断为空气循环路20内没有过滤器F2的情况下(步骤S32中为“是”)延长烘干运转(步骤S33)。因此，即使在由于空气循环路20内没有过滤器F2而使得洗涤筒3内的洗涤物L不容易烘干的情况下，也能将洗涤物L完全烘干。
本发明不局限于如上进行了说明的实施方式，可以在技术方案所述的范围内进行各种变形。
例如，可以省略具备过滤器F1的过滤单元22、涉及过滤器F1的维护的分支路23和注水阀24(参照图1)。
上述实施方式中，主要根据冷媒的温度来检测空气循环路20内有无过滤器F2。在即使空气循环路20内有过滤器F2，冷媒的温度的变化特性也会根据过滤器F2是否位于上述的装接位置而明显不同的情况下，也可以根据冷媒的温度来检测空气循环路20内的过滤器F2是否位于装接位置。由此，能判断过滤器F2是否正确装接于空气循环路20，能根据需要通过告知部38的告知来督促使用者重新装接过滤器F2。
上述实施方式中，作为主要的过滤器检测处理，执行基于冷媒的温度的过滤器检测处理。不同于此，也可以单独执行基于洗涤筒3内的空气温度的过滤器检测处理、基于送风部21的马达21B的电流值的第三实施例的过滤器检测处理来作为主要的过滤器检测处理。
此外，上述实施方式中的滚筒式洗干一体机1中，也可以以轴线J向水平方向H倾斜的方式配置洗涤筒3。此外，洗干一体机1也可以是轴线J纵向延伸的 立式洗干一体机。

Claims (5)

  1. 一种洗干一体机，其特征在于，包括：
    箱体；
    洗涤筒，配置于所述箱体内，收容洗涤物；
    空气循环路，配置于所述箱体内，包括与所述洗涤筒连接的取出口和返回口；
    送风部，将所述洗涤筒内的空气从所述取出口取出至所述空气循环路内并从所述返回口返回至所述洗涤筒内，由此使该空气循环；
    热泵，包括：压缩机，压缩冷媒；热交换器，配置于所述空气循环路内，在冷媒与所述空气循环路内的空气之间进行热交换；以及冷媒循环路，使冷媒在所述压缩机与所述热交换器之间循环；
    过滤器，配置于所述空气循环路内，从所述空气循环路内的空气中捕获异物；
    冷媒温度测量部，测定由所述压缩机进行了压缩的冷媒的温度；
    控制部，通过控制所述送风部和所述热泵来执行将所述洗涤筒内的洗涤物烘干的烘干运转；
    第一门，对设置于所述空气循环路的第一拆装口进行开闭；以及
    第二门，对设置于所述箱体的第二拆装口进行开闭，
    所述过滤器能经过所述第一拆装口和所述第二拆装口从所述空气循环路拆卸至所述箱体外，
    在从所述烘干运转开始起经过规定时间后所述冷媒温度测量部所测定到的温度或该温度的上升程度小于规定阈值的情况下，所述控制部判断为所述空气循环路内没有所述过滤器。
  2. 根据权利要求1所述的洗干一体机，其特征在于，
    所述热交换器包括：第一热交换器，被由所述压缩机进行了压缩的冷媒加 热；以及第二热交换器，被经过了所述第一热交换器的冷媒冷却，
    所述冷媒循环路包括：吐出路，将由所述压缩机进行了压缩的冷媒导向所述第一热交换器；以及返回路，将冷媒从所述第二热交换器导向所述压缩机，
    所述冷媒温度测量部所测定的温度是所述第一热交换器中冷媒的流路的温度或所述吐出路的温度。
  3. 根据权利要求1或2所述的洗干一体机，其特征在于，
    还包括：空气温度测量部，测定所述洗涤筒内的空气温度，
    在从所述烘干运转开始起经过规定时间后所述空气温度测量部所测定到的温度或该温度的上升程度小于规定阈值的情况下，所述控制部也判断为所述空气循环路内没有所述过滤器。
  4. 根据权利要求1～3的任一项所述的洗干一体机，其特征在于，
    还包括：告知部，在所述控制部判断为所述空气循环路内没有所述过滤器的情况下，告知所述空气循环路内没有所述过滤器这一情况。
  5. 根据权利要求1～4的任一项所述的洗干一体机，其特征在于，
    所述控制部在判断为所述空气循环路内没有所述过滤器的情况下延长所述烘干运转。
PCT/CN2021/083062 2020-09-25 2021-03-25 洗干一体机 Ceased WO2022062350A1 (zh)

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