WO2023053815A1 - Lave-linge - Google Patents

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Publication number
WO2023053815A1
WO2023053815A1 PCT/JP2022/032416 JP2022032416W WO2023053815A1 WO 2023053815 A1 WO2023053815 A1 WO 2023053815A1 JP 2022032416 W JP2022032416 W JP 2022032416W WO 2023053815 A1 WO2023053815 A1 WO 2023053815A1
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WO
WIPO (PCT)
Prior art keywords
water tank
detection unit
water
water level
washing machine
Prior art date
Application number
PCT/JP2022/032416
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English (en)
Japanese (ja)
Inventor
邦将 田浦
俊吾 石原
秀樹 山川
政志 高木
幸久 糀
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023053815A1 publication Critical patent/WO2023053815A1/fr

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the present disclosure relates to washing machines.
  • Patent Document 1 discloses a washing machine in which water level detection means is attached to the housing of the washing machine.
  • the washing machine in Patent Document 1 includes a housing, a water tank that is vibration-proof supported inside the housing, and a water level detection unit that detects the level of water accumulated inside the water tank.
  • the water level detection unit has a diaphragm that operates with a pressure corresponding to the water level in the air trap that communicates with the outer tank, and a transmission circuit that changes the transmission frequency according to movement of the diaphragm.
  • the water level detection unit is attached to the housing.
  • the present disclosure provides a washing machine that can suppress the occurrence of problems due to vibration in water level detection.
  • the washing machine includes a housing, a water tank supported in the housing for vibration isolation, an inner tank rotatably disposed inside the water tank, and a rotating shaft fixed to the bottom of the inner tank. , provided. Further, the washing machine according to the present disclosure includes a motor that rotationally drives the inner tub via a rotating shaft, and a water level detection unit that detects the level of water accumulated inside the tub. At least the water tank and the inner tank constitute a water tank unit.
  • the water level detection unit includes a hose attached to the water tank and a pressure detection section that detects pressure changes inside the hose. The pressure detector is attached to the water tank unit.
  • the washing machine according to the present disclosure can suppress the occurrence of problems due to vibration in water level detection.
  • FIG. 1 is a cross-sectional view showing the configuration of a washing machine according to Embodiment 1.
  • FIG. FIG. 2 is a perspective view showing the configuration of the front side of the water tank unit of the washing machine according to Embodiment 1.
  • FIG. 3 is a perspective view showing the configuration of the rear side of the water tank unit of the washing machine according to Embodiment 1.
  • FIG. 4 is a schematic diagram showing the configuration of the washing machine water level and vibration detection device according to the first embodiment.
  • FIG. 5 is a flow chart showing origin correction processing of the washing machine according to the first embodiment.
  • Embodiment 1 of the present disclosure will be described below with reference to FIGS.
  • the front side shown in FIGS. 1 to 3 may be referred to as the front, and the rear side may be referred to as the rear.
  • FIG. 1 is a cross-sectional view showing the configuration of washing machine 100 according to Embodiment 1.
  • FIG. 2 and 3 are perspective views showing the configuration of water tank unit 109 of washing machine 100, with FIG. 2 showing the front side of water tank unit 109 and FIG. 3 showing the rear side of water tank unit 109, respectively.
  • the washing machine 100 in this embodiment is configured as a drum-type washing machine.
  • the washing machine 100 includes a housing 110, a water tank 102, a rotating drum 101 as an example of an inner tank of the present disclosure, a rotating shaft 105, and a drum drive as an example of a motor of the present disclosure. It includes a motor 108 and a water level detection unit 130 (see FIG. 2).
  • the water tank 102 is arranged inside the housing 110 of the washing machine 100 .
  • the water tank 102 is formed in a bottomed cylindrical shape that opens forward, and is configured to be able to store water therein.
  • a water supply path (not shown) for supplying tap water and a drainage path 112 for draining the water inside the water tank 102 are connected to the water tank 102 .
  • the water tank 102 is supplied with water through a water supply route with a water supply valve (not shown) open, and is drained through a drainage route 112 with a drain valve (not shown) open.
  • the rotary drum 101 is formed in a bottomed cylindrical shape that opens forward, and is included in the water tank 102 so as to face the opening of the water tank 102 .
  • the rotating drum 101 is configured to be rotationally driven inside the water tank 102 by a later-described drum driving motor 108 .
  • a bearing case 103 having a bearing 104 that supports a rotating shaft 105 is provided on the back side bottom of the water tank 102 .
  • the rotary shaft 105 is provided at the center of rotation of the rear bottom of the rotary drum 101, and the axial direction is inclined downward from the front side to the rear side.
  • a drum pulley 106 is arranged on the bottom of the rotating shaft 105 on the rear side of the water tank 102
  • a drum drive motor 108 is arranged below the water tank 102 .
  • the drum drive motor 108 is connected to the rotating shaft 105 via the belt 107 and the drum pulley 106, and rotates the rotating drum 101 through the rotating shaft 105 in forward and reverse directions.
  • a water tank unit 109 is composed of the rotating drum 101, the water tank 102, the drum drive motor 108, the bearing case 103, the belt 107, the drum pulley 106, and the like.
  • the water tank unit 109 is a vibrating body that vibrates together with the vibration of the water tank 102 .
  • the water tank unit 109 is elastically supported inside the housing 110 by a plurality of suspensions 111 .
  • the lower end of suspension 111 is connected to the top of water tank 102
  • the upper end of suspension 111 is connected to the top of housing 110 . That is, the water tank 102 is supported by the suspension 111 for vibration isolation.
  • a water tank cover 115 is attached to the front side of the water tank 102 .
  • a water level detection unit 130 is attached to the top of the water tank cover 115 .
  • the water level detection unit 130 detects the water level of water accumulated inside the water tank 102 , and includes a water level/vibration detection device 113 (to be described later) and a hose 114 attached to the water tank 102 .
  • a water level/vibration detection device 113 to be described later
  • a hose 114 attached to the water tank 102 .
  • One end of the hose 114 is connected to the bottom of the back side of the water tank 102 (see FIG. 3) so that the water in the water tank 102 can flow into the hose 114 .
  • the other end of the hose 114 is connected to the water level detector 123 on the left side of the water tank cover 115 .
  • FIG. 4 is a schematic diagram showing the configuration of the water level and vibration detection device 113 of the washing machine 100.
  • the water level and vibration detection device 113 includes a printed circuit board 125 , a water level detection section 123 , a vibration detection section 124 and a case 122 .
  • the water level detection unit 123 corresponds to an example of the pressure detection unit of the present disclosure.
  • the water level detection unit 123 is a sensor that detects pressure changes inside the hose 114, and is composed of a MEMS (Micro Electro Mechanical Systems) sensor that is a piezoresistive pressure sensor using silicon. As shown in FIG. 2, the water level/vibration detector 113 including the water level detector 123 is attached to the upper part of the water tank cover 115, that is, the water level detector 123 is attached to the water tank unit 109. .
  • MEMS Micro Electro Mechanical Systems
  • the vibration detection unit 124 is a sensor that detects vibrations of the water tank unit 109, and is composed of a MEMS sensor that is a three-axis acceleration sensor.
  • the printed circuit board 125 is connected to the control unit 127 by a lead wire 126, and performs power supply control and transmission/reception of communication signals.
  • the lead wire 126 is, for example, a power supply wire, a GND wire, a pressure detection serial communication wire, a vibration detection serial communication wire, and the like.
  • the control unit 127 controls a course including a washing process, a rinsing process, or a dehydration process, which will be described later, and executes origin correction processing, which will be described later.
  • the control unit 127 has a computer system having a processor and memory.
  • the computer system functions as the control unit 127 by the processor executing the program stored in the memory.
  • the program executed by the processor is recorded in advance in the memory of the computer system here, it may be recorded in a non-temporary recording medium such as a memory card and provided, or may be provided through a telecommunication line such as the Internet. may be provided through Further, the control unit 127 is not limited to one that realizes the above functions through cooperation of hardware and software, and may be a hardware circuit designed exclusively for realizing the above functions.
  • the water level detection unit 123 and the vibration detection unit 124 are mounted on the printed circuit board 125.
  • the printed circuit board 125 is enclosed by the case 122 so that the surface on which the water level detector 123 is mounted faces downward.
  • the hose 114 connected to the water level detector 123 is fixed to the case 122 by fixing means 121 .
  • the fixing means 121 is composed of, for example, an Insulock.
  • the hose 114 passes through an opening (not shown) provided on the lower surface of the case 122 and extends outside the case 122 .
  • washing operation is an example of a course including all of the washing process, rinsing process, and spin-drying process.
  • the washing process is first executed.
  • the rotating drum 101 repeats normal rotation, stop, reverse rotation, and stop, and the stirring operation is performed for a predetermined time.
  • the agitation operation the clothes accommodated in the rotary drum 101 are lifted in the rotational direction by several projection plates for agitating the clothes, and then dropped from the lifted height. As a result, the clothes accommodated in the rotating drum 101 are beaten and washed.
  • a dehydration operation is then performed. In the dehydration operation, the drain valve is opened and the water in the water tank 102 is drained to the outside through the drain path 112 .
  • the rotary drum 101 is rotated at high speed for a predetermined period of time with the drain valve open. As a result, moisture contained in the clothes is dehydrated by centrifugal force and drained through the drain path 112 . During the dewatering operation, the water tank unit 109 vibrates greatly.
  • the rinsing process is executed.
  • the stirring operation is performed for a predetermined time after the water supply operation is performed. This dilutes the detergent ingredients contained in the clothes and rinses the clothes.
  • the dehydration process is executed.
  • the final dehydration operation is performed.
  • an origin correction process which will be described later, is performed.
  • the washing operation is finished.
  • the water level detection unit 123 is composed of a MEMS sensor.
  • the water level detection means is configured to detect expansion and contraction of the diaphragm with an analog oscillation circuit.
  • the expansion and contraction of the diaphragm is easily affected by vibration and external noise, and there is a problem in that detection results tend to be erroneous. Therefore, the conventional water level detection means had to be attached to the housing.
  • Washing machine 100 according to the present embodiment can be placed on vibrating water tub unit 109 by configuring water level detector 123 with a MEMS sensor. Since the water level detector 123 is provided on the vibrating body of the water tank unit 109 , both ends of the hose 114 are arranged on the water tank unit 109 .
  • the fixing means 121 for fixing the hose 114 in the washing machine 100 can be configured with inexpensive parts.
  • the hose 114 is less likely to vibrate relative to the water tank unit 109, the accuracy of water level detection by the water level detector 123 is improved.
  • the water level and vibration detection device 113 includes a water level detection section 123 and a vibration detection section 124 . If the vibration detection means is provided independently from the water level detection means, it is necessary to add one power line and one GND line to connect the vibration detection means and the control means. . Furthermore, it is necessary to add means for fixing the added power supply line and GND line. Washing machine 100 can reduce one power supply line and one GND line by mounting water level detection unit 123 and vibration detection unit 124 on the same printed circuit board 125 .
  • control unit 127 controls the amount of electricity output from water level detection unit 123 in a state in which water is not flowing into hose 114, that is, in a state in which pressure due to the inflowing water is not applied to water level detection unit 123.
  • An origin correction process for correcting the reference value is executed based on the signal.
  • FIG. 5 is a flowchart showing origin correction processing of washing machine 100 .
  • washing machine 100 includes a temperature sensor (not shown).
  • step S100 When the final dehydration operation is completed, that is, when the drum drive motor 108 stops, the control unit 127 starts origin correction processing (step S100).
  • the control unit 127 determines whether or not the washing process, the rinsing process, and the dehydration process have been executed in the current washing operation (step S101). When it is determined that all the processes have not been executed (step S101, No), the control unit 127 ends the origin correction process (step S107).
  • step S101 determines whether the temperature inside the washing machine 100 obtained from the temperature sensor is within the set temperature range of the pressure sensor that constitutes the water level detection unit 123. It is determined whether or not (step S102).
  • the set temperature may be any value as long as it does not cause any problems with the pressure sensor. If the temperature is not within the set temperature range, the absolute value of the electrical signal output from the pressure sensor (water level detection unit 123) may be an unreliable value. If it is determined that the temperature is not within the set temperature range (step S102, No), the control unit 127 ends the origin correction process (step S107).
  • the control unit 127 acquires the origin correction value from the water level detection unit 123 (step S103).
  • the origin correction value is the absolute value of the electrical signal (the electrical signal corresponding to the amount of increase in the internal pressure of the hose 114) under a predetermined condition.
  • the control unit 127 determines whether or not the origin correction value is within the set range (step S104).
  • the setting range is a range considering the accuracy error range of the MEMS sensor, which is a pressure sensor. If the origin correction value is not within the set range (step S104, No), the control unit 127 terminates the origin correction process (step S107).
  • the control unit 127 calculates a new reference value based on the origin correction value (step S105). For example, a moving average value based on a plurality of origin correction values may be used as the reference value.
  • the control unit 127 stores the calculated reference value (step S106). After that, the control unit 127 terminates the origin correction process (step S107).
  • the origin correction process of the present embodiment starts after the final dehydration operation is completed when executing a series of sequences including the washing process, the rinsing process, and the dehydration process.
  • the origin correction process can be performed while detergent foam or water remains inside the water tank 102. can be suppressed from starting.
  • the washing machine 100 starts the origin correction process when the water tank 102 is not vibrating and the water in the water tank 102 is drained to the maximum. can do.
  • washing machine 100 includes housing 110, water tank 102 supported inside housing 110 for vibration isolation, and rotating drum 101 rotatably disposed inside water tank 102. and a rotating shaft 105 fixed to the bottom of the rotating drum 101 .
  • Washing machine 100 also includes drum drive motor 108 that rotates rotary drum 101 via rotary shaft 105 , and water level detection unit 130 that detects the level of water accumulated inside water tub 102 .
  • At least the water tank 102 and the rotating drum 101 constitute a water tank unit 109 .
  • the water level detection unit 130 includes a hose 114 attached to the water tank 102 and a water level detection section 123 that detects pressure changes inside the hose 114 .
  • the water level detector 123 is attached to the water tank unit 109 .
  • the water level detector 123 is arranged in the water tank unit 109 as well as the hose 114 , so that the washing machine 100 can arrange the water level detector 123 in the same vibration system of the water tank unit 109 as the hose 114 .
  • washing machine 100 can suppress the occurrence of problems due to vibration in water level detection. Moreover, since the vibration of the hose 114 relative to the water level detection part 123 can be suppressed, the durability of the hose 114 can be improved. Washing machine 100 can employ inexpensive fixing means such as an insulock as fixing means 121 for hose 114 .
  • the water level detection unit 130 may include a vibration detection section 124 that detects vibration of the water tank unit 109 .
  • the washing machine 100 can provide the water tank unit 109 with the function of detecting both the water level and the vibration.
  • the lead wires connecting the control unit 127 and the water level/vibration detection device 113 can be consolidated, so the number of lead wires and fixing means for fixing the lead wires can be reduced.
  • the water level detection unit 130 may include a printed circuit board 125 on which the water level detection section 123 and the vibration detection section 124 are mounted.
  • the size can be reduced.
  • the washing machine 100 can use only one lead wire for connecting the control unit 127 and the water level/vibration detection device 113, so that lead wires and fixing means for fixing the lead wires can be reduced.
  • the water level detection unit 123 may be composed of a MEMS sensor.
  • the water level detection unit 123 is packaged as a MEMS sensor, it can be mounted on the same printed circuit board 125 as the vibration detection unit 124 . Further, washing machine 100 can arrange water level detection unit 123 on water tank unit 109 by configuring water level detection unit 123 with a MEMS sensor.
  • washing machine 100 may include controller 127 that controls a course including a washing process, a rinsing process, or a spin-drying process. If the course includes all of the washing process, the rinsing process, and the dehydration process, the control unit 127 may perform the following process after the final dehydration operation in the dehydration process is completed. That is, the control unit 127 may execute processing for setting a reference value used for calculating the water level based on the value indicating the pressure change inside the hose 114 detected by the water level detection unit 123 .
  • the washing machine 100 can perform the above-described processing (origin correction processing) in a state in which water is not flowing into the hose 114, that is, in a state in which the pressure of the water flowing into the hose 114 is not applied to the water level detection unit 123. Therefore, more accurate reference values can be set.
  • Embodiment 1 has been described as an example of the technique of the present disclosure.
  • the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like.
  • the drum-type washing machine has been described as an example of the washing machine of the present disclosure.
  • the washing machine of the present disclosure is not limited to a drum-type washing machine, as long as it generates vibration as the inner tub rotates.
  • the washing machine of the present disclosure may be, for example, a vertical washing machine.
  • the origin correction process shown in FIG. 5 has been described as an example of the process (origin correction process) of the present disclosure for setting the reference value used for calculating the water level.
  • the origin correction process of the present disclosure may be executed in a state where the water tank is not vibrating and no water remains in the water tank.
  • the origin correction process of the present disclosure may be performed, for example, before starting the washing operation or after finishing. That is, the origin correction process of the present disclosure may be performed after the final dehydration operation in the dehydration process is completed and before the next water supply operation is started.
  • the washing operation has been described as an example of the course of the present disclosure including all of the washing process, rinsing process, and spin-drying process.
  • the course of the present disclosure which includes all of the washing, rinsing, and spin-drying steps, is not limited to washing operations, and may include other steps.
  • the washing machine of the present disclosure is a drum-type washing and drying machine with a drying function
  • an example of the course of the present disclosure including all the steps of the washing process, the rinsing process, and the dehydration process further includes a drying process.
  • a wash/dry operation may be performed.
  • the drying process may be performed after the dehydration process ends.
  • the washing/drying operation ends. After that, origin correction processing may be performed.
  • washing machine 100 may perform an operation different from the dehydration operation after the final dehydration operation is completed. For example, following the final dehydration operation, the operation of loosening the clothes stuck to the inner peripheral surface of the rotary drum 101 may be performed, and then the washing operation may be terminated. After that, the origin correction process may be executed.
  • the present disclosure is applicable to washing machines. Specifically, the present disclosure is applicable to, for example, drum-type washing machines, vertical washing machines, and the like.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

Un lave-linge selon la présente divulgation comprend un boîtier, un réservoir d'eau supporté de façon à empêcher sa vibration à l'intérieur du boîtier, un réservoir interne agencé de façon à pouvoir tourner librement à l'intérieur du réservoir d'eau, et un arbre rotatif fixé à la section inférieure du réservoir interne. Le lave-linge comprend en outre un moteur pour entraîner en rotation le réservoir interne par l'intermédiaire de l'arbre rotatif, et une unité de détection de niveau d'eau pour détecter le niveau d'eau de l'eau accumulée à l'intérieur du réservoir d'eau. Au moins le réservoir d'eau et le réservoir interne constituent une unité de réservoir d'eau. L'unité de détection de niveau d'eau comprend un tuyau flexible fixé au réservoir d'eau et une unité de détection de pression qui détecte une variation de pression à l'intérieur du tuyau flexible. L'unité de détection de pression est fixée à l'unité de réservoir d'eau.
PCT/JP2022/032416 2021-10-01 2022-08-29 Lave-linge WO2023053815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-162462 2021-10-01
JP2021162462A JP2023053434A (ja) 2021-10-01 2021-10-01 洗濯機

Publications (1)

Publication Number Publication Date
WO2023053815A1 true WO2023053815A1 (fr) 2023-04-06

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PCT/JP2022/032416 WO2023053815A1 (fr) 2021-10-01 2022-08-29 Lave-linge

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JP (1) JP2023053434A (fr)
TW (1) TW202323626A (fr)
WO (1) WO2023053815A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154286A (ja) * 1991-12-03 1993-06-22 Matsushita Electric Ind Co Ltd 洗濯機
JP2003038890A (ja) * 2001-08-02 2003-02-12 Matsushita Electric Ind Co Ltd 洗濯機
JP2007512534A (ja) * 2003-11-20 2007-05-17 ハネウェル・インターナショナル・インコーポレーテッド デジタル出力ｍｅｍｓ圧力センサおよび方法
KR20090063372A (ko) * 2007-12-14 2009-06-18 삼성전자주식회사 세탁기 및 그 수위감지방법
JP2010035953A (ja) * 2008-08-08 2010-02-18 Hitachi Appliances Inc 洗濯機
JP2017501892A (ja) * 2013-12-12 2017-01-19 クゥアルコム・メムス・テクノロジーズ・インコーポレイテッドＱＵＡＬＣＯＭＭ ＭＥＭＳ Ｔｅｃｈｎｏｌｏｇｉｅｓ， Ｉｎｃ． 多層フィルムラミネートによるｍｅｍｓ封止

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154286A (ja) * 1991-12-03 1993-06-22 Matsushita Electric Ind Co Ltd 洗濯機
JP2003038890A (ja) * 2001-08-02 2003-02-12 Matsushita Electric Ind Co Ltd 洗濯機
JP2007512534A (ja) * 2003-11-20 2007-05-17 ハネウェル・インターナショナル・インコーポレーテッド デジタル出力ｍｅｍｓ圧力センサおよび方法
KR20090063372A (ko) * 2007-12-14 2009-06-18 삼성전자주식회사 세탁기 및 그 수위감지방법
JP2010035953A (ja) * 2008-08-08 2010-02-18 Hitachi Appliances Inc 洗濯機
JP2017501892A (ja) * 2013-12-12 2017-01-19 クゥアルコム・メムス・テクノロジーズ・インコーポレイテッドＱＵＡＬＣＯＭＭ ＭＥＭＳ Ｔｅｃｈｎｏｌｏｇｉｅｓ， Ｉｎｃ． 多層フィルムラミネートによるｍｅｍｓ封止

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TW202323626A (zh) 2023-06-16

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