WO2023053815A1 - Washing machine - Google Patents

Washing machine Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
water tank
detection unit
water
water level
washing machine
Prior art date
Application number
PCT/JP2022/032416
Other languages
French (fr)
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/en

Links

Images

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
    • 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.

Landscapes

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

Abstract

A washing machine according to the present disclosure comprises a housing, a water tank supported so as to prevent vibration thereof inside of the housing, an inner tank arranged so as to be capable of rotating freely inside of the water tank, and a rotating shaft fixed to the bottom section of the inner tank. The washing machine additionally comprises a motor for rotationally driving the inner tank via the rotating shaft, and a water level detection unit for detecting the water level of water accumulated inside of the water tank. 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 unit that detects change in the pressure inside of the hose. The pressure detection unit is attached to the water tank unit.

Description

洗濯機washing machine
　本開示は、洗濯機に関するものである。 The present disclosure relates to washing machines.
　例えば、特許文献１は、水位検知手段を洗濯機の筐体に取り付けた洗濯機を開示する。 For example, Patent Document 1 discloses a washing machine in which water level detection means is attached to the housing of the washing machine.
　特許文献１における洗濯機は、筐体と、筐体の内部に防振支持される水槽と、水槽の内部に溜まった水の水位を検知する水位検知ユニットと、を備える。水位検知ユニットは、外槽と連通するエアトラップ内の水位に応じた圧力で動作するダイヤフラムと、ダイヤフラムの動きにより発信周波数が変化する発信回路と、を有する。水位検知ユニットは、筐体に取り付けられている。 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.
特開２０１４－６８７３６号公報JP 2014-68736 A
　本開示は、水位検知において振動による不具合が発生することを抑制可能な洗濯機を提供する。 The present disclosure provides a washing machine that can suppress the occurrence of problems due to vibration in water level detection.
　本開示における洗濯機は、筐体と、筐体の内部に防振支持される水槽と、水槽の内部に回転自在に配設される内槽と、内槽の底部に固定される回転軸と、を備える。また、本開示における洗濯機は、回転軸を介して内槽を回転駆動するモータと、水槽の内部に溜まった水の水位を検知する水位検知ユニットと、を備える。少なくとも、水槽および内槽は、水槽ユニットを構成する。水位検知ユニットは、水槽に取り付けられるホースと、ホースの内部の圧力変化を検知する圧力検知部と、を含む。圧力検知部は、水槽ユニットに取り付けられている。 The washing machine according to the present disclosure 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.
　本開示における洗濯機は、水位検知において振動による不具合が発生することを抑制できる。 The washing machine according to the present disclosure can suppress the occurrence of problems due to vibration in water level detection.
図１は、実施の形態１における洗濯機の構成を示す断面図である。FIG. 1 is a cross-sectional view showing the configuration of a washing machine according to Embodiment 1. FIG. 図２は、実施の形態１における洗濯機の水槽ユニットの正面側の構成を示す斜視図である。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. 図３は、実施の形態１における洗濯機の水槽ユニットの背面側の構成を示す斜視図である。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. 図４は、実施の形態１における洗濯機の水位兼振動検知装置の構成を示す模式図である。FIG. 4 is a schematic diagram showing the configuration of the washing machine water level and vibration detection device according to the first embodiment. 図５は、実施の形態１における洗濯機の原点補正処理を示すフローチャートである。FIG. 5 is a flow chart showing origin correction processing of the washing machine according to the first embodiment.
　以下、図面を参照しながら、実施の形態を詳細に説明する。但し、必要以上に詳細な説明は省略する場合がある。例えば、既によく知られた事項の詳細説明、または、実質的に同一の構成に対する重複説明を省略する場合がある。これは、以下の説明が必要以上に冗長になるのを避け、当業者の理解を容易にするためである。 Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters or redundant descriptions of substantially the same configurations may be omitted. This is to avoid the following description from becoming more redundant than necessary and to facilitate understanding by those skilled in the art.
　なお、添付図面および以下の説明は、当業者が本開示を十分に理解するために提供されるのであって、これらにより請求の範囲に記載の主題を限定することを意図していない。 It should be noted that the accompanying drawings and the following description are provided to allow those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter of the claims.
　（実施の形態１）
　以下、図１～５を用いて、本開示の実施の形態１を説明する。なお、以下では、図１～図３において示す正面側を前方、背面側を後方として記載する場合がある。 (Embodiment 1)
Embodiment 1 of the present disclosure will be described below with reference to FIGS. In the following description, 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.
　［１．構成］
　［１－１．洗濯機の基本構成］
　図１は、実施の形態１における洗濯機１００の構成を示す断面図である。図２および図３は、洗濯機１００の水槽ユニット１０９の構成を示す斜視図であり、図２は水槽ユニット１０９の正面側、図３は水槽ユニット１０９の背面側をそれぞれ示している。 [1. composition]
[1-1. Basic configuration of washing machine]
FIG. 1 is a cross-sectional view showing the configuration of washing machine 100 according to Embodiment 1. As shown in 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.
　本実施の形態における洗濯機１００は、ドラム式洗濯機として構成されている。図１に示すように、洗濯機１００は、筐体１１０と、水槽１０２と、本開示の内槽の一例としての回転ドラム１０１と、回転軸１０５と、本開示のモータの一例としてのドラム駆動モータ１０８と、水位検知ユニット１３０（図２参照）と、を備える。 The washing machine 100 in this embodiment is configured as a drum-type washing machine. As shown in FIG. 1, 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).
　水槽１０２は、洗濯機１００の筐体１１０の内部に配設されている。水槽１０２は、前方に開口する有底円筒状に形成され、内部に水を貯水可能に構成されている。水槽１０２には、水道水を供給する給水経路（図示せず）と、水槽１０２内部の水を排水する排水経路１１２と、が接続されている。水槽１０２は、給水弁（図示せず）が開放された状態で給水経路を介して給水され、排水弁（図示せず）が開放された状態で排水経路１１２を介して排水される。 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.
　回転ドラム１０１は、前方に開口する有底円筒状に形成され、水槽１０２の開口と対向するように水槽１０２に内包される。回転ドラム１０１は、水槽１０２の内部において、後述するドラム駆動モータ１０８により回転駆動されるように構成されている。 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 .
　水槽１０２の背面側底部には、回転軸１０５を支持する軸受１０４を有する軸受ケース１０３が設けられている。回転軸１０５は、回転ドラム１０１の背面側底部の回転中心に設けられ、軸心方向が正面側から背面側に向けて下方傾斜している。図３に示すように、回転軸１０５の水槽１０２の背面側底部にはドラムプーリ１０６が配設され、水槽１０２の下部にはドラム駆動モータ１０８が配設されている。ドラム駆動モータ１０８は、ベルト１０７およびドラムプーリ１０６を介して回転軸１０５と連結し、回転軸１０５を介して回転ドラム１０１を正転、逆転方向に回転駆動する。上記の回転ドラム１０１、水槽１０２、ドラム駆動モータ１０８、軸受ケース１０３、ベルト１０７、ドラムプーリ１０６等により、水槽ユニット１０９が構成されている。水槽ユニット１０９は、水槽１０２の振動に伴い、一体となって振動する振動体である。 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. As shown in FIG. 3, a drum pulley 106 is arranged on the bottom of the rotating shaft 105 on the rear side of the water tank 102 , and 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 .
　水槽ユニット１０９は、複数本のサスペンション１１１により、筐体１１０内に弾性支持されている。サスペンション１１１の下端は、水槽１０２の上部に連結され、サスペンション１１１の上端は、筐体１１０の上部に連結されている。即ち、水槽１０２は、サスペンション１１１により防振支持されている。 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 , and 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.
　図２に示すように、水槽１０２の前面側には、水槽カバー１１５が取り付けられている。水槽カバー１１５の上部には、水位検知ユニット１３０が取り付けられている。 As shown in FIG. 2, 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 .
　水位検知ユニット１３０は、水槽１０２の内部に溜まった水の水位を検知するものであり、後述する水位兼振動検知装置１１３と、水槽１０２に取り付けられるホース１１４と、を備える。ホース１１４の一端は、水槽１０２の背面側下部と接続され（図３参照）、水槽１０２内の水がホース１１４内に流入可能に構成されている。ホース１１４の他端は、水槽カバー１１５の左部において水位検知部１２３と接続される。 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 . 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 .
　［１－１－２．水位兼振動検知装置の構成］
　図４は、洗濯機１００の水位兼振動検知装置１１３の構成を示す模式図である。図４に示すように、水位兼振動検知装置１１３は、プリント基板１２５と、水位検知部１２３と、振動検知部１２４と、ケース１２２と、を備える。なお、水位検知部１２３は、本開示の圧力検知部の一例に相当する。 [1-1-2. Configuration of water level and vibration detection device]
FIG. 4 is a schematic diagram showing the configuration of the water level and vibration detection device 113 of the washing machine 100. As shown in FIG. As shown in FIG. 4 , 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 . Note that the water level detection unit 123 corresponds to an example of the pressure detection unit of the present disclosure.
　水位検知部１２３は、ホース１１４の内部の圧力変化を検知するセンサであり、シリコンを用いたピエゾ抵抗式圧力センサであるＭＥＭＳ（Ｍｉｃｒｏ　Ｅｌｅｃｔｒｏ　Ｍｅｃｈａｎｉｃａｌ　Ｓｙｓｔｅｍｓ）センサにより構成されている。なお、図２に示すように、水位検知部１２３を含む水位兼振動検知装置１１３は、水槽カバー１１５の上部に取り付けられており、即ち、水位検知部１２３は、水槽ユニット１０９に取り付けられている。 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. .
　振動検知部１２４は、水槽ユニット１０９の振動を検知するセンサであり、３軸加速度センサであるＭＥＭＳセンサにより構成されている。プリント基板１２５は、リード線１２６により制御部１２７と接続され、電源制御や通信信号の送受信を行う。リード線１２６は、例えば、電源線、ＧＮＤ線、圧力検知シリアル通信線、振動検知シリアル通信線、等である。 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.
　制御部１２７は、後述する洗い行程、すすぎ行程、または脱水行程を含むコースの制御および後述する原点補正処理の実行を行う。なお、制御部１２７は、プロセッサおよびメモリを有するコンピュータシステムを有している。そして、プロセッサがメモリに格納されているプログラムを実行することにより、コンピュータシステムが制御部１２７として機能する。プロセッサが実行するプログラムは、ここではコンピュータシステムのメモリに予め記録されているとしたが、メモリカード等の非一時的な記録媒体に記録されて提供されてもよいし、インターネット等の電気通信回線を通じて提供されてもよい。また、制御部１２７は、ハードウェアとソフトウェアの協働により上記機能を実現するものに限定されず、上記機能を実現する専用に設計されたハードウェア回路であってもよい。 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. Note that 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. Although 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.
　水位検知部１２３および振動検知部１２４は、プリント基板１２５に実装されている。プリント基板１２５は、水位検知部１２３が実装された面が下方を向くように、ケース１２２により内包されている。 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.
　水位検知部１２３と接続されたホース１１４は、固定手段１２１によりケース１２２に固定されている。固定手段１２１は、例えばインシュロック等により構成されている。ホース１１４は、ケース１２２の下面に設けられた開口（図示せず）を通過し、ケース１２２の外側に延びる。 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 .
　本実施の形態のように、水位検知部１２３および振動検知部１２４をプリント基板１２５に実装することで、水位検知部１２３および振動検知部１２４をそれぞれ独立に設けた場合と比べて、リード線等を削減することができる。 By mounting the water level detection unit 123 and the vibration detection unit 124 on the printed circuit board 125 as in the present embodiment, compared to the case where the water level detection unit 123 and the vibration detection unit 124 are provided independently, can be reduced.
　［１－２．動作］
　以上のように構成された洗濯機１００について、以下その動作、作用を説明する。 [1-2. motion]
The operation and action of the washing machine 100 configured as described above will be described below.
　［１－２－１．洗濯運転の動作］
　以下、洗濯運転について説明する。洗濯運転は、洗い行程、すすぎ行程、および脱水行程の全ての行程を含むコースの一例である。 [1-2-1. Operation of washing operation]
The washing operation will be described below. The washing operation is an example of a course including all of the washing process, rinsing process, and spin-drying process.
　洗濯運転が開始されると、まず、洗い行程が実行される。洗い行程では、水槽１０２内に給水する給水動作が実行された後、回転ドラム１０１が正転、停止、逆転、停止を繰り返す攪拌動作が所定時間実行される。攪拌動作では、回転ドラム１０１に収容された衣類は、衣類撹拌用の数個の突起板によって回転方向に持ち上げられ、持ち上げられた高さから落下される。これにより、回転ドラム１０１に収容された衣類には、たたき洗いの作用が働く。その後、脱水動作が実行される。脱水動作では、排水弁が開放され、水槽１０２内の水が排水経路１１２を介して外部に排水される。回転ドラム１０１は、排水弁が開放された状態で、所定時間の間高速で回転される。これにより、衣類に含まれた水分は、遠心力により脱水され、排水経路１１２を介して排水される。脱水動作において、水槽ユニット１０９は、大きく振動する。 When the washing operation starts, the washing process is first executed. In the washing process, after the water supply operation of supplying water into the water tank 102 is performed, the rotating drum 101 repeats normal rotation, stop, reverse rotation, and stop, and the stirring operation is performed for a predetermined time. In 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.
　その後、すすぎ行程が実行される。すすぎ行程では、洗い行程と同様、給水動作が実行された後、攪拌動作が所定時間実行される。これにより、衣類に含まれた洗剤成分が希釈され、衣類がすすがれる。 After that, the rinsing process is executed. In the rinsing process, similarly to the washing process, 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.
　その後、脱水行程が実行される。脱水行程においては、最終の脱水動作が実行される。最終の脱水動作が実行された後、後述する原点補正処理が実行される。最終の脱水動作が終了した後、洗濯運転が終了する。 After that, the dehydration process is executed. In the dehydration process, the final dehydration operation is performed. After the final dehydration operation is performed, an origin correction process, which will be described later, is performed. After the final dehydration operation is finished, the washing operation is finished.
　［１－２－２．水位検知部の動作］
　水槽１０２内に所定水位以上の水が溜められた場合、水槽１０２内の水がホース１１４に流入し、水の流入量に応じてホース１１４の内圧が上昇する。水位検知部１２３は、ホース１１４の内圧の上昇を検知し、内圧の上昇量に応じた電気信号を出力する。制御部１２７は、水位検知部１２３からリード線１２６を介して電気信号の絶対値を受信し、絶対値と基準値とに基づいて水位を算出する。制御部１２７は、リード線１２６を介して電気信号を受信し、水槽１０２の水位を算出する。 [1-2-2. Operation of water level detector]
When the water tank 102 is filled with water equal to or higher than a predetermined water level, the water in the water tank 102 flows into the hose 114, and the internal pressure of the hose 114 increases according to the inflow amount of water. The water level detector 123 detects an increase in the internal pressure of the hose 114 and outputs an electrical signal corresponding to the amount of increase in internal pressure. The control unit 127 receives the absolute value of the electric signal from the water level detection unit 123 via the lead wire 126, and calculates the water level based on the absolute value and the reference value. The control unit 127 receives the electrical signal via the lead wire 126 and calculates the water level of the water tank 102 .
　本実施の形態においては、水位検知部１２３はＭＥＭＳセンサにより構成されている。従来、水位検知手段は、ダイヤフラムの伸び縮みをアナログ発振回路で検出するように構成されていた。ダイヤフラムの伸び縮みは、振動や外来ノイズによる影響を受けやすく、検出結果に誤差を生じやすいという課題があった。そのため、従来の水位検知手段は、筐体に取り付ける必要があった。本実施の形態における洗濯機１００は、水位検知部１２３をＭＥＭＳセンサにより構成することで、振動する水槽ユニット１０９上に配置することができる。水位検知部１２３が水槽ユニット１０９の振動体上に設けられることにより、ホース１１４の両端が水槽ユニット１０９上に配置されているため、洗濯機１００は、水槽ユニット１０９の振動によりホース１１４が水位検知部１２３から抜けることを抑制できる。ホース１１４が水位検知部１２３から抜けにくい構成となっているため、洗濯機１００は、ホース１１４を固定する固定手段１２１を安価な部品で構成できる。また、ホース１１４が水槽ユニット１０９に対して相対的に振動しにくいため、水位検知部１２３における水位検知の精度が向上する。 　In the present embodiment, the water level detection unit 123 is composed of a MEMS sensor. Conventionally, 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 . It is possible to suppress the slipping out of the portion 123 . Since the hose 114 is configured to be difficult to come off from the water level detection portion 123, the fixing means 121 for fixing the hose 114 in the washing machine 100 can be configured with inexpensive parts. In addition, since 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.
　本実施の形態においては、水位兼振動検知装置１１３が水位検知部１２３および振動検知部１２４を備えている。仮に、振動検知手段を水位検知手段と異なる位置に独立して設けた場合、振動検知手段と制御手段との間を接続するために、電源線一本およびＧＮＤ線一本を追加する必要がある。更に、追加した電源線およびＧＮＤ線を固定する手段を追加する必要がある。洗濯機１００は、水位検知部１２３および振動検知部１２４を同一のプリント基板１２５に実装したことにより、電源線一本およびＧＮＤ線一本を削減することができる。 In this embodiment, 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 .
　［１－２－２．水位検知部の原点補正処理］
　経年変化によって電気信号の絶対値が変化したとしても、基準値からの変位量は略一定である。従って、所定の条件において電気信号の絶対値を取得し、取得された電気信号の絶対値に基づいて基準値を算出することで、経年変化による基準値の絶対量のズレを補正することができる。本実施の形態においては、制御部１２７は、ホース１１４に水が流入していない状態、即ち、流入した水による圧力が水位検知部１２３に加わっていない状態において水位検知部１２３から出力された電気信号に基づき、基準値を補正する原点補正処理を実行する。 [1-2-2. Origin Correction Processing of Water Level Detector]
Even if the absolute value of the electric signal changes due to aging, the amount of displacement from the reference value is substantially constant. Therefore, by acquiring the absolute value of the electrical signal under predetermined conditions and calculating the reference value based on the acquired absolute value of the electrical signal, it is possible to correct the deviation of the absolute amount of the reference value due to aging. . In the present embodiment, 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.
　以下、図５を用いて、原点補正処理を説明する。図５は、洗濯機１００の原点補正処理を示すフローチャートである。なお、特に説明していなかったが、洗濯機１００は温度センサ（図示せず）を備える。 The origin correction process will be described below with reference to FIG. FIG. 5 is a flowchart showing origin correction processing of washing machine 100 . Although not specifically described, washing machine 100 includes a temperature sensor (not shown).
　制御部１２７は、最終の脱水動作が終了した時、即ち、ドラム駆動モータ１０８が停止した時、原点補正処理を開始する（ステップ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).
　制御部１２７は、今回の洗濯運転において、洗い行程、すすぎ行程、および脱水行程を実行したか否かを判定する（ステップＳ１０１）。全ての行程を実行していないと判定した場合（ステップＳ１０１、Ｎｏ）、制御部１２７は、原点補正処理を終了する（ステップＳ１０７）。 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).
　全ての行程を実行したと判定した場合（ステップＳ１０１、Ｙｅｓ）、制御部１２７は、温度センサから取得した洗濯機１００内の温度が、水位検知部１２３を構成する圧力センサの設定温度範囲内か否かを判定する（ステップＳ１０２）。設定温度は、圧力センサに不具合が生じない値であればよい。設定温度範囲内でない場合、圧力センサ（水位検知部１２３）の出力する電気信号の絶対値が信頼できない値である可能性がある。設定温度範囲内ではないと判定した場合（ステップＳ１０２、Ｎｏ）、制御部１２７は、原点補正処理を終了する（ステップＳ１０７）。 When it is determined that all steps have been executed (step S101, Yes), the control unit 127 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).
　圧力センサの設定温度範囲内である場合（ステップＳ１０２、Ｙｅｓ）、制御部１２７は、水位検知部１２３から原点補正値を取得する（ステップＳ１０３）。原点補正値とは、所定の条件下における電気信号（ホース１１４の内圧の上昇量に応じた電気信号）の絶対値である。 If the temperature is within the set temperature range of the pressure sensor (step S102, Yes), 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.
　制御部１２７は、原点補正値が設定範囲内か否かを判定する（ステップＳ１０４）。設定範囲とは、圧力センサであるＭＥＭＳセンサの精度誤差範囲を考慮した範囲である。原点補正値が設定範囲内でない場合（ステップＳ１０４、Ｎｏ）、制御部１２７は、原点補正処理を終了する（ステップＳ１０７）。 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).
　原点補正値が設定範囲内である場合（ステップＳ１０４、Ｙｅｓ）、制御部１２７は、原点補正値に基づいて新たな基準値を算出する（ステップＳ１０５）。基準値は、例えば、複数の原点補正値による移動平均値を用いてもよい。制御部１２７は、算出した基準値を記憶する（ステップＳ１０６）。その後、制御部１２７は、原点補正処理を終了する（ステップＳ１０７）。 When the origin correction value is within the set range (step S104, Yes), 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).
　このように、本実施の形態の原点補正処理は、洗い行程、すすぎ行程、および脱水行程を含む一連のシーケンスを実行する場合において、最終の脱水動作が終了した後に処理を開始する。洗い行程、すすぎ行程、および脱水行程を含む一連のシーケンスを実行する場合に限定して原点補正処理を行う構成とすることで、洗剤泡または水が水槽１０２の内部に残量したまま原点補正処理を開始することを抑制できる。最終の脱水動作が終了した後に原点補正処理を行う構成とすることで、洗濯機１００は、水槽１０２が振動しておらず、水槽１０２内の水が最も排水された状態で原点補正処理を開始することができる。 In this way, 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. By adopting a configuration in which the origin correction process is performed only when a series of sequences including a washing process, a rinsing process, and a dehydration process are executed, the origin correction process can be performed while detergent foam or water remains inside the water tank 102. can be suppressed from starting. By adopting a configuration in which the origin correction process is performed after the final spin-drying operation is completed, 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.
　［１－３．効果等］
　以上のように、本実施の形態における洗濯機１００は、筐体１１０と、筐体１１０の内部に防振支持される水槽１０２と、水槽１０２の内部に回転自在に配設される回転ドラム１０１と、回転ドラム１０１の底部に固定される回転軸１０５と、を備える。また、洗濯機１００は、回転軸１０５を介して回転ドラム１０１を回転駆動するドラム駆動モータ１０８と、水槽１０２の内部に溜まった水の水位を検知する水位検知ユニット１３０と、を備える。少なくとも、水槽１０２および回転ドラム１０１は、水槽ユニット１０９を構成する。水位検知ユニット１３０は、水槽１０２に取り付けられるホース１１４と、ホース１１４の内部の圧力変化を検知する水位検知部１２３と、を含む。水位検知部１２３は、水槽ユニット１０９に取り付けられている。 [1-3. effects, etc.]
As described above, washing machine 100 according to the present embodiment 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 .
　これにより、水位検知部１２３は、ホース１１４と同じく水槽ユニット１０９に配設されるため、洗濯機１００は、水位検知部１２３をホース１１４と同じ水槽ユニット１０９の振動系に配置することができる。 As a result, 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 .
　そのため、ホース１１４が水位検知部１２３に対して相対的に振動することを抑制できるので、水位検知部１２３における水位検知の精度を向上させることができる。即ち、洗濯機１００は、水位検知において振動による不具合が発生することを抑制することができる。また、ホース１１４が水位検知部１２３に対して相対的に振動することを抑制できるので、ホース１１４の耐久性を向上させることができる。また、洗濯機１００は、ホース１１４の固定手段１２１として、インシュロック等の安価な固定手段を採用できる。 Therefore, since the hose 114 can be suppressed from vibrating relative to the water level detection unit 123, the water level detection accuracy of the water level detection unit 123 can be improved. That is, the 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 .
　本実施の形態のように、水位検知ユニット１３０は、水槽ユニット１０９の振動を検知する振動検知部１２４を含んでもよい。 As in the present embodiment, the water level detection unit 130 may include a vibration detection section 124 that detects vibration of the water tank unit 109 .
　これにより、洗濯機１００は、水槽ユニット１０９に対して、水位と振動との両方を検知する機能を持たせることができる。 Thereby, the washing machine 100 can provide the water tank unit 109 with the function of detecting both the water level and the vibration.
　そのため、洗濯機１００は、制御部１２７と水位兼振動検知装置１１３とを接続するリード線を集約できるので、リード線やリード線を固定する固定手段などを少なくできる。 Therefore, in the washing machine 100, 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.
　本実施の形態のように、水位検知ユニット１３０は、水位検知部１２３および振動検知部１２４が実装されたプリント基板１２５を含んでもよい。 As in the present embodiment, 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.
　これにより、水位検知部１２３と振動検知部１２４とが同一のプリント基板１２５に実装されているため、小型化ができる。 As a result, since the water level detection unit 123 and the vibration detection unit 124 are mounted on the same printed circuit board 125, the size can be reduced.
　そのため、洗濯機１００は、制御部１２７と水位兼振動検知装置１１３とを接続するリード線を一つにできるので、リード線やリード線を固定する固定手段などを少なくできる。 Therefore, 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.
　本実施の形態のように、水位検知部１２３は、ＭＥＭＳセンサで構成されていてもよい。 As in the present embodiment, the water level detection unit 123 may be composed of a MEMS sensor.
　これにより、水位検知部１２３は、ＭＥＭＳセンサとしてパッケージ化されているため、振動検知部１２４と同一のプリント基板１２５に実装されることができる。また、洗濯機１００は、水位検知部１２３をＭＥＭＳセンサで構成することで、水位検知部１２３を水槽ユニット１０９上に配置することができる。 Because 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.
　本実施の形態のように、洗濯機１００は、洗い行程、すすぎ行程、または脱水行程を含むコースを制御する制御部１２７を備えてもよい。制御部１２７は、コースが、洗い行程、すすぎ行程、および脱水行程の全ての行程を含む場合、脱水行程における最終の脱水動作が終了した後に、以下の処理を実行してもよい。即ち、制御部１２７は、水位検知部１２３が検知したホース１１４の内部の圧力変化を示す値に基づいて、水位を算出に用いる基準値を設定する処理を実行してもよい。 As in the present embodiment, 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 .
　これにより、洗濯機１００は、上記処理（原点補正処理）をホース１１４に水が流入していない状態、即ち、ホース１１４に流入した水による圧力が水位検知部１２３に加わっていない状態で実行できるため、より正確な基準値を設定できる。 As a result, 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.
　（他の実施の形態）
　以上のように、本開示における技術の例示として、実施の形態１を説明した。しかしながら、本開示における技術は、これに限定されず、変更、置き換え、付加、省略などを行った実施の形態にも適用できる。また、上記実施の形態１で説明した各構成要素を組み合わせて、新たな実施の形態とすることも可能である。 (Other embodiments)
As described above, Embodiment 1 has been described as an example of the technique of the present disclosure. However, 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. Also, it is possible to combine the constituent elements described in the first embodiment to form a new embodiment.
　実施の形態１では、本開示の洗濯機の一例として、ドラム式洗濯機を説明した。本開示の洗濯機は、内槽の回転に伴って振動が発生する機器であればよいので、ドラム式洗濯機に限定されない。本開示の洗濯機は、例えば、縦型洗濯機であってもよい。 In Embodiment 1, 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.
　実施の形態１では、洗い行程、すすぎ行程、脱水行程の全ての行程を含む場合、脱水行程における最終の脱水動作が終了した後に、圧力検知部が検知したホースの内部の圧力変化を示す値に基づいて、水位を算出に用いる基準値を設定する本開示の処理（原点補正処理）の一例として、図５に示す原点補正処理を説明した。本開示の原点補正処理は、水槽が振動しておらず、水槽内に水が残量していない状態で実行されればよい。本開示の原点補正処理は、例えば、洗濯運転の開始前、または終了後に行われてもよい。つまり、本開示の原点補正処理は、脱水行程における最終の脱水動作が終了した後、次に給水動作が開始される前に行われてもよい。 In the first embodiment, when all the processes of the washing process, the rinsing process, and the dehydration process are included, after the final dehydration operation in the dehydration process is completed, the value indicating the pressure change inside the hose detected by the pressure detection unit Based on this, 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.
　実施の形態１では、洗い行程、すすぎ行程、および脱水行程の全ての行程を含む本開示のコースの一例として、洗濯運転を説明した。洗い行程、すすぎ行程、および脱水行程の全ての行程を含む本開示のコースは、洗濯運転に限定されず、更に他の行程を含んでもよい。例えば、本開示の洗濯機が、乾燥機能を備えたドラム式洗濯乾燥機の場合、洗い行程、すすぎ行程、および脱水行程の全ての行程を含む本開示のコースの一例として、更に乾燥行程を含む洗濯乾燥運転が実行されてもよい。この場合、脱水行程が終了した後に、乾燥行程が実行されてもよい。乾燥行程が終了した後、洗濯乾燥運転が終了する。その後に、原点補正処理が実行されてもよい。 In Embodiment 1, 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. For example, if 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. In this case, the drying process may be performed after the dehydration process ends. After the drying process ends, the washing/drying operation ends. After that, origin correction processing may be performed.
　実施の形態１では、最終の脱水動作が終了した後に、洗濯運転が終了する構成を説明した。実施の形態１では説明しなかったが、洗濯機１００は、最終の脱水動作が終了した後、脱水動作とは異なる動作を実行してもよい。例えば、最終の脱水動作に続いて、回転ドラム１０１の内周面に張り付いた衣類をほぐす動作が実行され、その後に洗濯運転が終了してもよい。そして、その後に、原点補正処理が実行されてもよい。 In Embodiment 1, the configuration in which the washing operation ends after the final dehydration operation is completed has been described. Although not described in Embodiment 1, 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.
　本開示は、洗濯機に適用可能である。具体的には、例えば、ドラム式洗濯機、縦型洗濯機、等に本開示は適用可能である。 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.
　１００　洗濯機
　１０１　回転ドラム
　１０２　水槽
　１０３　軸受ケース
　１０４　軸受
　１０５　回転軸
　１０６　ドラムプーリ
　１０７　ベルト
　１０８　ドラム駆動モータ
　１０９　水槽ユニット
　１１０　筐体
　１１１　サスペンション
　１１２　排水経路
　１１３　水位兼振動検知装置
　１１４　ホース
　１１５　水槽カバー
　１２１　固定手段
　１２２　ケース
　１２３　水位検知部
　１２４　振動検知部
　１２５　プリント基板
　１２６　リード線
　１２７　制御部
　１３０　水位検知ユニット 100 washing machine 101 rotating drum 102 water tank 103 bearing case 104 bearing 105 rotating shaft 106 drum pulley 107 belt 108 drum drive motor 109 water tank unit 110 housing 111 suspension 112 drainage path 113 water level and vibration detector 114 hose 115 water tank cover 121 fixing means 122 Case 123 Water level detection unit 124 Vibration detection unit 125 Printed circuit board 126 Lead wire 127 Control unit 130 Water level detection unit

Claims (5)

  1. 　筐体と、
    　前記筐体の内部に防振支持される水槽と、
    　前記水槽の内部に回転自在に配設される内槽と、
    　前記内槽の底部に固定される回転軸と、
    　前記回転軸を介して前記内槽を回転駆動するモータと、
    　前記水槽の内部に溜まった水の水位を検知する水位検知ユニットと、
    　を備え、
    　少なくとも、前記水槽および前記内槽は、水槽ユニットを構成し、
    　前記水位検知ユニットは、前記水槽に取り付けられるホースと、前記ホースの内部の圧力変化を検知する圧力検知部と、を含み、
    　前記圧力検知部は、前記水槽ユニットに取り付けられている、
    　洗濯機。     a housing;
    a water tank that is anti-vibrationally supported inside the housing;
    an inner tank rotatably disposed inside the water tank;
    a rotating shaft fixed to the bottom of the inner tank;
    a motor that rotates the inner tank via the rotating shaft;
    a water level detection unit that detects the level of water accumulated inside the water tank;
    with
    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 unit that detects pressure changes inside the hose,
    The pressure detection unit is attached to the water tank unit,
    washing machine.
  2. 　前記水位検知ユニットは、前記水槽ユニットの振動を検知する振動検知部を含む、
    　請求項１に記載の洗濯機。     The water level detection unit includes a vibration detection unit that detects vibration of the water tank unit,
    The washing machine according to claim 1.
  3. 　前記水位検知ユニットは、前記圧力検知部および前記振動検知部が実装された基板を含む、
    　請求項２に記載の洗濯機。     The water level detection unit includes a substrate on which the pressure detection unit and the vibration detection unit are mounted,
    The washing machine according to claim 2.
  4. 　前記圧力検知部は、ＭＥＭＳ（Ｍｉｃｒｏ　Ｅｌｅｃｔｒｏ　Ｍｅｃｈａｎｉｃａｌ　Ｓｙｓｔｅｍｓ）センサで構成されている、
    　請求項１～３のいずれか一項に記載の洗濯機。     The pressure detection unit is composed of a MEMS (Micro Electro Mechanical Systems) sensor,
    The washing machine according to any one of claims 1-3.
  5. 　洗い行程、すすぎ行程、または脱水行程を含むコースを制御する制御部を備え、
    　前記制御部は、前記コースが、前記洗い行程、前記すすぎ行程、および前記脱水行程の全ての行程を含む場合、前記脱水行程における最終の脱水動作が終了した後に、前記圧力検知部が検知した前記ホースの内部の前記圧力変化を示す値に基づいて、水位を算出に用いる基準値を設定する処理を実行する、
    　請求項４に記載の洗濯機。     Equipped with a control unit that controls a course including a washing process, a rinsing process, or a dehydration process,
    When the course includes all of the washing process, the rinsing process, and the dehydration process, the control unit detects the pressure detected by the pressure detection unit after the final dehydration operation in the dehydration process is completed. performing a process of setting a reference value used for calculating the water level based on the value indicating the pressure change inside the hose;
    The washing machine according to claim 4.
PCT/JP2022/032416 2021-10-01 2022-08-29 Washing machine WO2023053815A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021162462A JP2023053434A (en) 2021-10-01 2021-10-01 washing machine
JP2021-162462 2021-10-01

Publications (1)

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

Family

ID=85780643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/032416 WO2023053815A1 (en) 2021-10-01 2022-08-29 Washing machine

Country Status (3)

Country Link
JP (1) JP2023053434A (en)
TW (1) TW202323626A (en)
WO (1) WO2023053815A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154286A (en) * 1991-12-03 1993-06-22 Matsushita Electric Ind Co Ltd Washing machine
JP2003038890A (en) * 2001-08-02 2003-02-12 Matsushita Electric Ind Co Ltd Washing machine
JP2007512534A (en) * 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 Digital output MEMS pressure sensor and method
KR20090063372A (en) * 2007-12-14 2009-06-18 삼성전자주식회사 Washing machine and method for indicating a water level
JP2010035953A (en) * 2008-08-08 2010-02-18 Hitachi Appliances Inc Washing machine
JP2017501892A (en) * 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． MEMS sealing with multilayer film lamination

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154286A (en) * 1991-12-03 1993-06-22 Matsushita Electric Ind Co Ltd Washing machine
JP2003038890A (en) * 2001-08-02 2003-02-12 Matsushita Electric Ind Co Ltd Washing machine
JP2007512534A (en) * 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 Digital output MEMS pressure sensor and method
KR20090063372A (en) * 2007-12-14 2009-06-18 삼성전자주식회사 Washing machine and method for indicating a water level
JP2010035953A (en) * 2008-08-08 2010-02-18 Hitachi Appliances Inc Washing machine
JP2017501892A (en) * 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． MEMS sealing with multilayer film lamination

Also Published As

Publication number Publication date
JP2023053434A (en) 2023-04-13
TW202323626A (en) 2023-06-16

Similar Documents

Publication Publication Date Title
JP4943772B2 (en) Washing machine and cloth amount calculation method
RU2401344C1 (en) Washing machine of drum type
CN105308229A (en) Drum-type washing machine
CN100523354C (en) Washing machine
KR20070021787A (en) Method for sensing vibration of washing machine
JP7126068B2 (en) drum washing machine
JP4748973B2 (en) Washing machine
WO2023053815A1 (en) Washing machine
JP2011062334A (en) Drum washing machine
JP4260097B2 (en) Washing machine
JP4831046B2 (en) Drum washing machine
JP5060437B2 (en) Drum washing machine
KR100557036B1 (en) A washing machine using of vibration sensor and the method for vibration sensing
KR20050067914A (en) Method for compensating deviation of location in washing machine with bldc motor directly connected
JP2009261754A (en) Drum washing machine
JPH10328479A (en) Method for securing appropriate dynamic balance of assembly for washing of washing machine and washing machine using the method
KR100357165B1 (en) Device for sensing quantity of frequency-variation in a drum-washer and Methode for controlling driving-unit by this device
JP2010227472A (en) Drum washing machine
JP4816718B2 (en) Drum washing machine
KR100617223B1 (en) Device for sensing a water level and vibration-quantity in a drum-washer and Methode for controlling driving-unit by this device
JP5331644B2 (en) Washing machine
JPH09294892A (en) Washing and spin-drying machine
JP2006212118A (en) Washing machine
JP3399752B2 (en) Fully automatic washing machine
WO2020108431A1 (en) Dewatering machine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22875687

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22875687

Country of ref document: EP

Kind code of ref document: A1