JP2004049284A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine capable of securing safety against burns and infectious diseases by preventing an opening / closing door from being opened as long as the liquid level of processing liquid inside an outer body is in the opening impossible range of the opening / closing door even at the time of a power failure. <P>SOLUTION: The washing machine is provided with a lock mechanism 40 for maintaining the closed state of the opening / closing door 3, a first liquid level detector 56 for detecting that the liquid level of the processing liquid is in an opening possible range, a second liquid level detector 57 for detecting that the liquid level of the processing liquid is in the opening impossible range, a controller 51 for maintaining the lock state of the lock mechanism 40 on the basis of the signals of the second liquid level detector 57 and releasing the lock state of the lock mechanism on the basis of the signals of the first liquid level detector 56, and a backup power source 63 for detecting the power failure and feeding power to at least the controller 51 and the lock mechanism 40. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing machine that performs washing, disinfection, sterilization, and the like of an object to be washed using hot water in a washing process.
[0002]
[Prior art]
In recent years, hospitals and welfare facilities for the elderly have been equipped with waste removal machines, washing and dewatering machines, and washing machines with dehydration and drying functions. Clothing, underwear, diapers, etc., which hold infectious pathogenic bacteria, excrement, or the like.
Therefore, there is a washing machine that can appropriately perform processing such as washing, disinfection, sterilization, and the like, such as using hot water in the washing process for washing the object to be washed and heating the hot water to 80 ° C. or more and holding the same for a certain time or more. Is being developed.
[0003]
In this type of washing machine, for example, an outer body is defined as a hollow chamber having a front opening in a housing, and a rotating drum having a plurality of through holes in a peripheral wall is rotatably housed in the outer body. By opening the opening / closing door attached to the opening of the outer shell, storing the object to be washed in the rotating drum and supplying hot water into the outer shell and rotating the rotating drum, it is contaminated. Washing the washed object, heating the hot water in the outer shell to a temperature of about 80 to 93 or 94 ° C and keeping it for more than 10 minutes, or adding a disinfectant to the hot water in the outer shell. As a result, contaminated items to be washed, disinfected and sterilized.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional washing machine, the temperature of the hot water stored in the outer shell rises to about 80 ° C. to 93 or 94 ° C., so that the temperature of the opening / closing door attached to the opening of the outer shell also rises. When the door is carelessly touched, there is a risk of burns.
[0005]
Further, since the lock mechanism of the door is configured to be locked when the operation of the washing machine is started, the door is openable at the time of power failure. Therefore, in spite of the stoppage due to a power failure during operation, the door may be accidentally opened, and in this case, contaminated water containing bacteria and the like may leak out and cause a secondary infection. In addition, there is a risk that hot water may be burned due to scattering outside the drum.
[0006]
Furthermore, if the operation is stopped due to a power failure during operation, the progress of the processing such as cleaning, disinfection and sterilization cannot be grasped, and when the power failure is restored, the initial state is reached, and all processing steps must be restarted from the beginning. Did not.
[0007]
The present invention has been made in view of such circumstances, and the purpose of the present invention is that even if a power failure occurs, if it is recognized that the processing liquid is present in the outer shell, the opening and closing door cannot be opened, and a burn or It is an object of the present invention to provide a washing machine capable of ensuring safety against infectious diseases, storing a processing progress at the time of a power failure, and resuming continuous operation after recovery from the power failure.
[0008]
[Means for Solving the Problems]
Means for Solving the Problems The present invention has been proposed to achieve the above object, and according to the first aspect, a rotating drum that stores and rotates an object to be washed is stored in an outer shell that stores a processing liquid, In a washing machine that has an openable and closable door that can be opened and closed at the opening of the outer body communicating with the input port of the rotating drum,
A lock mechanism that maintains the closed state of the door,
A liquid level detector for detecting the liquid level of the processing liquid in the outer shell,
A control device that controls the lock state of the lock mechanism based on a signal from the liquid level detector,
A backup power supply that supplies power to the lock mechanism in the event of a power outage,
It is characterized by having.
[0009]
According to a second aspect of the present invention, in the control device according to the first aspect, the storage device is provided with storage means for storing an operation state until the control device is stopped due to a power failure, and at the time of a power failure, a backup power supply supplies power to the control device. It is a washing machine of description.
[0010]
According to a third aspect of the present invention, there is provided the washer according to the first or second aspect, wherein the opening / closing door is provided with a translucent panel across a space.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an appearance of a washing machine according to an embodiment of the present invention. FIG. 2 is a front view showing the internal structure of the washing machine of the present embodiment, FIG. 3 is a side view thereof, and FIG. 4 is a rear view thereof. In the following description, for convenience, the front side in FIG. 2 is described as the front side or the front side, and the back side in FIG. 4 is described as the rear side or the rear side.
[0012]
As shown in these drawings, the illustrated washing machine 1 of the present embodiment is a horizontal washing machine in which a rotation axis of a rotating drum 2 is supported in a substantially horizontal direction. The apparatus is configured as a washing machine capable of storing an object in the rotating drum 2 and performing a cleaning process, a disinfection / sterilization process, and a dehydration process. That is, in the washing machine 1 of the present embodiment, a hollow cylindrical outer body 5 supported in a substantially horizontal direction for storing a heat treatment liquid at the time of washing is provided inside a substantially rectangular parallelepiped housing 4 having an opening / closing door 3 on the front surface. A rotating drum 2 having a cylindrical shape and having a horizontal bottom and having a plurality of through-holes 6 formed in a peripheral wall is rotatably housed in the outer body 5. And a heating treatment liquid is supplied into the outer shell 5 to rotate the rotary drum 2 to wash the object to be washed. , The rotating drum 2 is rotated, and the water contained in the object to be washed is dehydrated by centrifugal force.
[0013]
The outer body 5 is a hollow columnar hollow chamber defined at a substantially upper central portion of the housing 4, and a box-shaped storage tank 33 is integrally provided at the bottom of the lower end. One half functions as a tank for storing heat treatment liquid, water, and the like.
[0014]
A circular opening 7 is formed in the front surface of the outer body 5 and communicates with an input port 24 of the rotary drum 2, which will be described later. It is attached so that it can be opened and closed by rotation. Therefore, when the opening / closing door 3 is closed, it is sealed by the sealing material 8, so that the heat treatment liquid, water, and the like can be stored without leaking water from the outer shell 5.
[0015]
As shown in FIG. 5, the peripheral frame 3 a of the door 3 is formed of stainless steel having corrosion resistance, chemical resistance, and heat resistance such as SUS304. For example, non-metallic circular translucent panels 3b and 3c such as a heat-resistant transparent glass plate and a transparent acrylic plate are mounted to form a double panel structure. The panel 3b disposed on the outer surface of the door 3 is fixed to, for example, a flange of the peripheral frame 3a with bolts. On the other hand, the panel 3c arranged on the inner surface of the opening / closing door 3 is, for example, a backing fitting 35 fixed to the inner end of the peripheral frame 3a with bolts, and a ring-shaped support packing 36 having an inner groove in the backing fitting 35. Is fixed, and a panel is mounted so as to fit into an inner groove of the support packing 36. An O-ring 37 is mounted on the backing fitting 35 to ensure waterproofness. Therefore, the state of the inside of the outer shell 5 can be observed through both panels 3b and 3c of the opening and closing door 3, and even if the heat treatment liquid stored in the outer shell 5 is contacted, the outer surface of the opening and closing door 3 can be observed. Is difficult to raise the temperature and can prevent a burn when the user touches the opening / closing door 3 carelessly. The lock mechanism provided on the door 3 will be described later.
[0016]
The outer trunk 5 is disposed on the gantry 10a, 10b with a vibration isolating spring 9 interposed therebetween in the left and right lower half part thereof, and is separated by the vibration isolating spring 9. A shock absorber 11 is provided between 10a and 10b to absorb an impact due to an eccentric load or the like.
[0017]
The outer shell 5 has a hot water supply pipe (not shown) for supplying hot water or hot water into the outer shell 5 in a washing step of the article to be washed, and a water supply pipe (FIG. 7) for supplying water into the outer shell 5 in a rinsing step. The hot water supply pipe is provided with a hot water supply valve, and the water supply pipe is provided with a water supply valve in order to supply hot water or hot water and water by switching. I have.
Note that hot water, hot water, and water are one type of the cleaning liquid in the present invention, and the hot water supply pipe and the water supply pipe function as the cleaning liquid supply system in the present invention.
[0018]
A plurality of processing solution supply pipes 12 for supplying a chemical solution to the inside of the outer case 5 at the time of disinfecting and sterilizing the object to be washed are connected to an upper portion of the rear surface 5a of the outer body 5. In order to selectively supply several types of chemicals, a processing chemical supply valve 13 is provided. Examples of the chemical include a detergent, a disinfectant, a disinfectant, a deodorant, a deodorant, a deodorant, and the like, and can be appropriately selected as needed. Although not shown in the drawings, a predetermined amount of the detergent can be supplied by the same configuration as that of the processing chemical liquid supply.
[0019]
A drain pipe 14 is connected downward to the storage tank 33 at the lower end of the outer shell 5, and a drain valve 16 is provided on the drain pipe 14 via a bellows pipe 15, and a distal end 14 a of the drain valve 16 is provided. It hangs down to the vicinity of the bottom in the water storage tank 17 arranged at the lower part in the housing 4. Therefore, by opening the drain valve 16, a part of the outer shell 5 can be opened, and the heat treatment liquid, water, and the like stored in the outer shell 5 are discharged into the water storage tank 17 and temporarily stored therein. It is made to get.
[0020]
The water storage tank 17 has a substantially rectangular parallelepiped shape, and its volume is appropriately set in relation to the water storage capacity in the outer shell 5. In the present embodiment, the water storage tank 17 is set to be substantially equal to the water storage capacity in the outer shell 5. ing. A lower sewage system 19 is connected via a discharge valve 18 to a lower central portion on the right side of the water storage tank 17 through a discharge valve 18 to discharge residues such as dirt deposited in the water storage tank 17. An overflow pipe 20 is connected to the upper central part on the right side of the pipe 17 and merges with the sewage system 19 to reduce water overflowing from the overflow pipe 20 when the amount of water stored in the water storage tank 17 exceeds a predetermined amount. The water is drained to the water system 19.
[0021]
This water storage tank 17 stores low-temperature water in advance in a washing step and a rinsing step described later, and discharges a heat treatment liquid used in a main washing step described later into the water storage tank 17 to thereby store cold stored water. It is a tank for mixing and heat-treating liquid to lower the temperature, and it is preferable that the water storage tank 17 is provided with a stirring means in order to promote the temperature lowering action.
[0022]
The drain pipe 14 is hung down from the outer shell 5, bent horizontally to the left in FIG. 2, bent again and hung, and its tip 14 a is immersed in water or the like stored in the water storage tank 17. Is done. Therefore, the portion on the distal end side of the drain pipe 14 functions as an air trap, and the smell of dirt and the like flowing backward to the outer shell 5 through the water storage tank 17 and the drain pipe 19 is prevented.
[0023]
The storage tank 33 at the lower end of the outer shell 5 is formed in such a manner as to accommodate the dirt separated from the object to be washed smoothly and to prevent clogging in the gap between the rotating drum 7 and the outer shell 6. In the storage tank 33, an electric heater 58 for heating water supplied from a water supply pipe or heating or maintaining the temperature of hot water supplied from a hot water supply pipe is provided as a heating means. A steam introduction pipe (not shown) for blowing steam into the body 5 may be connected.
[0024]
An overflow tube 21 reaching the water storage tank 17 is connected to an upper portion of the rear surface 5a of the outer shell 5, and overflows from the overflow tube 21 when the amount of water stored in the outer shell 5 exceeds a predetermined amount. The water and the like are drained to the water storage tank 17.
[0025]
Further, a liquid level detector for detecting the liquid level of the processing liquid or the like stored in the outer shell 5 is provided in the outer body 5, and based on a signal from the liquid level detector, the lock state of the door 3 is determined. Is controlled under the control device. In the present embodiment, the first liquid level detector 56 detects that the opening / closing door 3 is in the openable area, and the second liquid level detector 56 detects that the liquid level of the processing liquid or the like is in the openable area of the opening / closing door 3. A two-liquid level detector 57 is provided. The second liquid level detector 57 may be configured such that when the processing liquid or the like in the outer shell 5 exceeds the lower end level of the front opening 7, a liquid leak occurs when the opening / closing door 3 is opened. 7 is provided in accordance with the lower end level of the opening 7, and the first liquid level detector 56 opens the opening / closing door 3 when the processing liquid in the outer shell 5 is sufficiently lower than the lower end level of the opening 7. Since there is no risk of liquid leakage in the storage tank 33, for example, it is provided in accordance with the upper end level of the storage tank 33.
[0026]
The rotary drum 2 serves as an inner body with respect to the outer body 5, and has a shape in which a substantially bottomed cylindrical body having an inlet 24 opened on the front surface is placed horizontally, and a large number of through holes 6 are formed in a peripheral wall thereof. It is housed in the outer shell 5 at a predetermined interval, and is configured so as to house the article to be washed and rotate forward and backward, and rotate at low speed and high speed by the driving means 23. In addition, on the inner surface of the peripheral wall of the rotary drum 2, projections 22 for scooping up and agitating an object to be washed by rotational force are arranged at equal intervals along the circumferential direction, for example, at three to six places. That is, a portion corresponding to the bottom of the bottomed cylindrical body is the rear surface of the rotary drum 2, and the front side is also covered by a ring-shaped front surface 2 a having a circular input port 24, and projects rearward from the rear surface of the rotary drum 2. The rotating shaft 25 is laterally supported by a bearing 26 provided on the rear surface 5 a of the outer shell 5. A pulley 27 is fixed to a tip of a rotating shaft 25 protruding from a bearing 26, a V-belt 30 is stretched between the pulley 27 and an inverter motor 29, and the rotation of the rotating drum 2 is driven by the operation of the motor 29. . Therefore, in the present embodiment, the motor 29, the pulley 27, and the V-belt 30 function as the driving unit 23.
[0027]
Next, the lock mechanism 40 of the opening / closing door 3 in the washing machine 1 of the present embodiment will be described with reference to FIGS. FIG. 6 is a plan view showing a lock mechanism of the opening / closing door 3, and FIG. 7 is a view taken along the line II of FIG. FIG. 8 is a plan view showing a lock state detection switch of the lock mechanism of the door 3.
[0028]
As described above, the opening / closing door 3 in the washing machine 1 of the present embodiment is configured to open and close the front opening 7 by rotating the hinge mechanism 3 'as a fulcrum. As shown in FIG. 6, the opening / closing operation of the opening / closing door 3 is performed by holding the handle 41 attached to the outer surface of the opening / closing door 3 and rotating it with the pin 42 as a fulcrum. By rotating the handle 41 in the direction of arrow A, the arc-shaped hook 43 integrated with the handle 41 is rotated counterclockwise (counterclockwise) in the figure as shown by arrow A in FIG. This is achieved by engaging the shaft 44. On the other hand, the opening operation is performed by the hook 43 coming off the fixed shaft 44 when the handle 41 is rotated in the reverse direction.
[0029]
As shown in FIG. 7, projecting portions 43a are formed on the upper and lower ends of the hook 43, and the projecting portion 43a is provided with a hook 46a at the tip of a plate-like lever member 46 which rotates about a pin 45 as a fulcrum. By rotating clockwise and engaging as shown by the arrow B in FIG. 7, the engagement state of the hook 43 with the fixed shaft 44 is locked, and the closed state of the door 3 is maintained. . This operation of the lever member 46 is performed by advancing the rod 47a of the solenoid 47 (upward in FIG. 7) and pressing the base end 46b of the lever member 46, and when the rod 47a of the solenoid 47 is retracted. The lever member 46 is urged by a spring 48 pressing the rear end portion of the lever member 46 from above, the lever member 46 rotates counterclockwise, and the tip hook 46 a of the lever member 46 The door 3 is released from the portion 43a, and the door 3 can be opened (an unlocked state). Therefore, the solenoid 47, the lever member 46, and the spring 48 function as the lock mechanism 40 of the present embodiment.
[0030]
Further, as shown in FIG. 8, near the fixed shaft 44, a switch operating means 49 and a micro switch 50 are provided as lock state detection switches. The switch operating means 49 is formed by, for example, a spring lever. When the hook 43 is engaged with the fixed shaft 44, the distal end of the hook 43 presses the base end 49 a of the switch operating means 49, and the switch is operated. The operating portion 49b of the operating means 49 presses the microswitch 50 to detect that the open / close door 3 is in the closed state, and transmits a detection signal to the control device 51 described later.
[0031]
FIG. 9 is a block diagram illustrating the control content of the control device in the washing machine 1 of the present embodiment. As shown in the figure, the control device 51 is constituted by, for example, a microcomputer, and its control unit is provided with a CPU 52 for performing a processing operation, a ROM 53 for recording the control contents, and a RAM 54 for recording the progress of the operation and the like. On the input side of the control device 51, a start switch 55, a first liquid level detector 56, a second liquid level detector 57, and a micro switch 50 of an operation panel 32 provided on the upper left front of the housing 4 are provided. Are electrically connected, and an ON signal of the start switch 55, a detection signal of the first liquid level detector 56 and the second liquid level detector 57, and a detection signal of the micro switch 50 are inputted. I have.
[0032]
On the output side of the control device 51, a solenoid 47 constituting the lock mechanism 40 of the opening / closing door 3, a motor 29 for driving the rotary drum 2 to rotate, and an electric heater disposed in the storage tank 33 at the lower end of the outer shell 5 are provided. 58, a hot water supply valve 59 provided on a hot water supply pipe for supplying hot water into the outer body 5, a water supply valve 60 provided on a water supply pipe for supplying water into the outer body 5, inside the outer body 5 A processing chemical supply valve 13 provided on a processing chemical supply pipe 12 for supplying a chemical to the apparatus and a drain valve 16 provided on a drain pipe 14 are electrically connected so that an operation signal is output to each device. Each of these devices is supplied with a predetermined voltage, current, and electric capacity from a power supply generation circuit 62 connected to a commercial power supply 61.
[0033]
The power generation circuit 62 also supplies power to the control device 51, and constantly supplies power to the backup power supply 63 connected thereto to perform charging. The backup power supply 63 is electrically connected to at least the control device 51 and the solenoid 47 of the lock mechanism 40, and supplies power when a power failure occurs. For this reason, a power failure detection circuit 64 is electrically connected to the backup power supply 63. The power failure detection circuit 64 is branched and connected to a power supply system 65 from the power generation circuit 62 to the solenoid 47 of the lock mechanism 40. The power supply state is monitored. When power cannot be supplied from the power supply generation circuit 62 to the solenoid 47, it is determined that a power failure has occurred, and power is supplied from the backup power supply 63 to the control device 51 and the solenoid 47. Note that the power failure detection circuit may have any configuration as long as the power failure can be detected and power supplied from a backup power supply.
[0034]
Next, the operation of the cleaning machine 1 of the present embodiment and the processing method thereof will be described.
The washing machine 1 of the present embodiment can perform a washing process, a disinfection / sterilization process, and a dehydration process with one rotating drum 2.
[0035]
First, when the opening and closing door 3 is opened and a washing object such as clothing is put into the rotating drum 2 and the start switch 55 of the operation panel 32 is turned on, an ON signal is input to the control device 51 and the control device 51 is turned on. After confirming the closed state of the door 3 based on the detection signal from the microswitch 50, the water supply valve 60 is opened under the control of the control device 51 to supply a predetermined amount of water into the outer shell 5. Then, the object to be washed is immersed in water in the rotating drum 2.
[0036]
In the present embodiment, when water is supplied to a position below the center of the rotary drum 2 and the second liquid level detector 57 detects the water level, control is performed based on a signal from the second liquid level detector 57. The device 51 closes the supply valve 60. When the water level in the outer shell 5 rises to the danger area, the water is drained from the overflow tube 21 into the water storage tank 17. Then, when a predetermined amount of water is supplied into the outer shell 5 and the object to be washed in the rotary drum 2 is immersed, the control device 51 rotates the motor 29 to rotate the rotary drum 2, and this rotation causes A pre-washing step of the article to be washed is performed.
[0037]
When the pre-washing step is completed, the drain valve 16 interposed in the drain pipe 14 is opened, and the water in the outer shell 5 is drained to the water storage tank 17 for storage.
[0038]
After the drainage of the water used in the pre-washing step is completed, under the control of the controller 51, the processing chemical liquid supply valve 13 is opened to supply a predetermined amount of the processing liquid into the outer shell 5, and the hot water supply valve 59 is opened and a predetermined amount of hot water is supplied, whereby a heat treatment liquid having a predetermined concentration is stored in the outer shell 5. As described above, when the level of the heat treatment liquid is detected by the second liquid level detector 57, the control device 51 closes the hot water supply valve 59 based on the signal from the second liquid level detector 57.
[0039]
When a predetermined amount of the heat treatment liquid is supplied into the outer shell 5 and the object to be washed in the rotary drum 2 is immersed, the control device 51 rotates the motor 29 to rotate the rotary drum 2, and this rotation causes A main washing step for separating wastes from the object to be washed is performed. The temperature of the heat treatment liquid is 80 to 100C, preferably 85C or more. When heated to 85 ° C., sterilization or sterilization can be reliably performed, and moreover, dirt and the like can be effectively separated.
[0040]
When the opening / closing door 3 is closed, the inside of the outer body 5 is sealed, so that the odor does not leak to the outside during the cleaning process. As described above, the portion below the 90 ° elbow on the distal end side of the drain pipe 14 is used. Functions as an air trap, thereby preventing the smell of dirt and the like from flowing back.
[0041]
In addition, when the object to be washed heated by the high-temperature processing liquid is rotated by the rotating drum 2, the object to be washed can be lifted by the protruding portion 22 and then dropped, and the dirt can be easily separated by the impact of the drop. be able to.
[0042]
When the main washing step is completed, the drainage valve 16 is opened while the object to be washed such as clothing remains in the rotating drum 2, and the treatment liquid is drained to the water storage tank 17. Since the low-temperature water used in the previous pre-washing step is stored in the water storage tank 17, the hot water used in the main washing step is discharged from the outer shell 5 and mixed with the water in the water storage tank 17. After the temperature is lowered, the water can be drained from the overflow pipe 20 to the sewage system 19 on the downstream side.
[0043]
When the draining process is completed, the water supply valve 60 is opened to supply water into the outer shell 5, and the object to be washed such as clothing is rinsed and washed by the rotation of the rotary drum 2. When the rinsing step is completed, the drain valve 16 of the drain pipe 14 is opened again to perform the drain step, and the water in the outer shell 5 is discharged into the water storage tank 17 together with the dirt and the like. In the present embodiment, this rinsing step is repeated three times. When the draining process is performed after the third rinsing process is completed, cold water is stored again in the water storage tank 17, and the stored water in the water storage tank 17 is used in the next main washing process. It is used as water for lowering the temperature of the heat treatment liquid to be used.
[0044]
When the final draining step is completed, the process shifts to the dehydration step. The spin-drying process is performed by rotating the rotary drum 2 with the drain valve 16 opened to remove water contained in the object to be washed by centrifugal force. And, the to-be-washed items such as clothes left in the rotating drum 2 have been heat-sterilized or disinfected, so that they can be reused.
[0045]
When all the steps are completed, the control device 51 receives the detection signal from the first liquid level detector 56, retreats the rod 47a of the solenoid 47 constituting the lock mechanism 40, and is urged by the spring 48 to When the member 46 rotates counterclockwise, the locked state of the hook 43 is released, and the door 3 can be opened. Thus, the user can operate the handle 41 to open the opening / closing door 3 and take out the object to be washed. However, the panels 3b and 3c are mounted on the outer surface and the inner surface 3c of the opening / closing door 3 with the space 34 therebetween. The temperature of the outer and inner surfaces of the opening and closing door 3 is hardly increased even if it comes into contact with the heat treatment liquid in the outer shell 5, so that even if the opening and closing door 3 is inadvertently touched, burns can be prevented. Can be. Further, since the panels 3b and 3c have translucency, the inside of the outer shell 5 can be observed while the washer 1 is operating.
[0046]
Further, even if the user attempts to open the opening / closing door 3 by operating the handle 41 by mistake while driving, the control device 51 receives the detection signal from the first liquid level detector 56 and It is determined that the liquid level of the processing liquid is in the non-openable area, and the lock mechanism 40 locks the opening / closing door 3, so that the hook 43 does not come off from the fixed shaft 44 and the opening / closing door 3 is opened. There is no.
[0047]
When a power failure occurs during the operation of the washing machine 1 of the present embodiment, the power failure detection circuit 64 monitors the power supply state of the power supply system 65 from the power supply generation circuit 62 to the solenoid 47, and the power supply generation circuit When power is not supplied from the power supply 62 to the solenoid 47, it is determined that a power failure has occurred, and power is supplied from the backup power supply 63 to the control device 51 and the solenoid 47. Therefore, the lock mechanism 40 of the door 3 is maintained in a locked state. In addition, even if a power failure occurs, the opening and closing door 3 is not opened, and safety against burns and infectious diseases can be ensured.
[0048]
In addition, the control unit of the control device 51 is provided with the RAM 54 as a storage unit for storing the processing progress until the operation is stopped due to the power failure, and therefore, based on the processing progress stored in the RAM 54 after the restoration of the power failure. , The continuous operation can be resumed.
[0049]
The washing machine 1 of the above embodiment is configured as an apparatus capable of performing a cleaning process, a disinfection / sterilization process, and a dehydration process with one rotating drum 2, but is configured as an apparatus that also performs a drying process in the rotating drum 2. May be.
[0050]
Note that, in the above-described embodiment, only examples of the respective processes such as the cleaning process, the heat disinfection / sterilization, and the like are described, and the processing method, the processing order, and the like are not limited by the present embodiment.
[0051]
Further, the washing machine 1 of the present embodiment is configured as a so-called horizontal washing machine in which the rotation axis of the rotating drum 2 is supported in a substantially horizontal direction, but the type and system are not limited at all. For example, it may be configured as a so-called vertical washing machine in which the rotation axis of the rotating drum 2 is vertically arranged.
[0052]
【The invention's effect】
As described above, according to the present invention, the following excellent effects can be obtained.
That is, according to the first aspect of the present invention, a lock mechanism for maintaining the closed state of the open / close door, a liquid level detector for detecting the liquid level of the processing liquid in the outer shell, and a signal from the liquid level detector And a backup power supply that supplies power to the lock mechanism in the event of a power failure, so that the level of the processing liquid in the outer shell is within the area where the door can be opened. The opening / closing door can be opened only when a signal from the liquid level detector that detects the presence of the opening / closing door is received, and even if a power failure occurs, the liquid level of the processing liquid in the outer shell is in an area where the opening / closing door cannot be opened. As long as the door cannot be opened, safety against burns and infectious diseases can be ensured.
[0053]
According to the second aspect of the present invention, since the control device is provided with the storage means for storing the processing progress status up to the stop due to the power failure, the control device is configured based on the processing progress status stored in the storage means after the recovery from the power failure. , The continuous operation can be resumed.
[0054]
According to the third aspect of the present invention, since the translucent panel is attached to the opening / closing door with the space therebetween, the inside of the outer shell can be observed, and the inside of the outer shell can be observed. The outer and inner surfaces of the door are hardly heated even if it comes into contact with the heat treatment liquid, so that a burn when the user touches the door carelessly can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view showing an appearance of a washing machine according to an embodiment of the present invention.
FIG. 2 is a front view showing the internal structure of the washing machine of the embodiment.
FIG. 3 is a side view showing the internal structure of the washing machine of the present embodiment.
FIG. 4 is a rear view showing the internal structure of the washing machine of the embodiment.
FIG. 5 is a schematic view and a partially enlarged view showing a structure of an opening / closing door in the washing machine of the present embodiment.
FIG. 6 is a plan view showing a lock mechanism of an opening / closing door in the washing machine of the present embodiment.
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a plan view showing a lock state detection switch of a lock mechanism of the opening / closing door in the washing machine of the present embodiment.
FIG. 9 is a block diagram illustrating control contents of a control device in the cleaning machine of the present embodiment.
[Explanation of symbols]
1 washing machine
2 rotating drum
2 Front
3 opening and closing door
3a Peripheral frame
3b outer surface
3c inside
4 Housing
5 outer trunk
5a Rear
6 Through holes
7 Opening
8 Sealing material
9 Anti-vibration spring
10a, 10b base
11 Shock absorber
14 drainage pipe
14a Tip
15 bellows tube
16 drain valve
17 water storage tank
18 Discharge valve
19 Sewage system
20 overflow pipe
21 Overflow tube
22 Projection
23 Driving means
24 Input port
25 rotation axis
26 Bearing
27 pulley
28 stand
29 Inverter motor
30 V belt
31 Shock absorber
32 Operation panel
33 storage tank
34 space
35 Backing bracket
36 Support packing
37 O-ring
40 Lock mechanism
41 Handle
42 pins
43 hook
43a Projection
44 Fixed axis
45 pin
46 lever member
46a Tip hook
46b proximal end
47 Solenoid
47a rod
48 Spring
49 Switch operating means
49a Base end
49b Working part
50 micro switch
51 Controller
52 CPU
53 ROM
54 RAM
55 Start switch
56 1st liquid level detector
57 Second liquid level detector
58 Electric heater
59 Hot water supply valve
60 water supply valve
61 AC power supply
62 Power generation circuit
63 Backup power supply
64 Power failure detection circuit
65 Power supply system

Claims (3)

In a washing machine in which a rotating drum that accommodates and rotates the object to be washed is housed in an outer body that stores the processing liquid, and an opening / closing door is attached to the opening of the outer body that opens and closes to communicate with an input port of the rotating drum. ,
A lock mechanism that maintains the closed state of the door,
A liquid level detector for detecting the liquid level of the processing liquid in the outer shell,
A control device that controls the lock state of the lock mechanism based on a signal from the liquid level detector,
A backup power supply that supplies power to the lock mechanism in the event of a power outage,
A washing machine comprising: The cleaning device according to claim 1, wherein the control device includes a storage unit configured to store an operation state until the operation device is stopped due to a power failure, and a backup power supply supplies power to the control device during a power failure. The washing machine according to claim 1 or 2, wherein a translucent panel is attached to the opening / closing door via a space.

Images