JP2004049283A - Hot water washing machine and hot water washing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water washing machine capable of lowering a temperature of hot water used in a washing process and discharging the water to a sewer system on a downstream side by a simple structure. <P>SOLUTION: A water storage tank 17 for storing the water used in a rinsing process is provided on the downstream side of a drain pipe 14 for discharging washing liquid inside an outer body 5 and the water used in the rinsing process of the washing processing of a previous time is stored inside the water storage tank as the water for lowering the temperature. The hot water used in the washing process of the washing processing of this time is introduced to the water storage tank and mixed with the water for lowering the temperature, the temperature of the hot water is lowered and then it is discharged to the sewer system 19 on the downstream side of the water storage tank. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hot water washing machine and a hot water washing method for washing, disinfecting, and sterilizing an object to be washed using hot water in a washing step.
[0002]
[Prior art]
In recent years, hospitals and welfare facilities for the elderly have been equipped with a waste removal machine, a washing dehydrator, and a washing machine having a drying function after dehydration as washing equipment for underwear and diapers to which dirt is attached and general linen. In particular, the items to be washed in hospitals include clothes holding infectious pathogenic bacteria, clothes to which excrement is attached, underwear, diapers, and the like.
[0003]
Therefore, washing, sterilization, disinfection, and the like are properly performed by washing the object to be washed with hot water in the washing process and heating the temperature to 80 ° C. or more and maintaining the temperature for a certain time (for example, 10 minutes) or more. A gaining hot water washing machine is being developed.
[0004]
In this type of hot water washing machine, for example, an outer shell is defined as a tub having a front opening in a housing, and a rotating drum having a plurality of through holes in a peripheral wall is rotatable in the outer shell. By opening the opening and closing door attached to the opening of the outer trunk, storing the washing object in the rotating drum and supplying hot water into the outer drum, and rotating the rotating drum Washing and washing items are disinfected with hot water.
[0005]
[Problems to be solved by the invention]
By the way, in the conventional hot water washing machine, since the hot water stored in the outer shell rises to a temperature of about 80 ° C. to 93, 94 ° C., if the hot water is directly drained to a drain pipe of a facility such as a hospital, the water is distributed. Drainage pipes made of hard vinyl chloride, which are often used in water pipe facilities, are softening and deforming. Therefore, usually, "cooling down" is performed by injecting cold water into the outer shell and mixing with the hot water before draining the hot water, and the heat deformation temperature of the drainage pipe made of hard PVC is 60C to 65C. The method of draining water after confirming that the temperature has fallen to about less than that is adopted.
[0006]
However, when such a measure is adopted, water is separately supplied to lower the temperature of the hot water in the outer shell, so the amount of water used increases and the water supply and sewerage charges increase, and water supply for cooling The process time increases and the processing time increases.
[0007]
In addition, since the temperature is rapidly lowered by mixing cold water with hot water in the outer shell, there is a case where clothes to be washed cause fiber shrinkage.
[0008]
Furthermore, tap water is usually used as cold water for cooling hot water. However, since the water temperature varies depending on the season, the amount of water used and the time vary.
[0009]
The present invention has been made in view of such circumstances, and an object thereof is to directly discharge hot water used in a tank from a tank without cooling down such as supplying cold water to the tank. The discharged hot water can be drained to a tank with a simple structure to lower the temperature, and then drained to the downstream sewerage system.This can increase water and sewage rates and reduce processing time such as water supply time and cooling down. An object of the present invention is to provide a hot water washing machine and a hot water washing method capable of preventing thermal damage to sewage pipes without increasing the size of the clothes and causing fiber shrinkage of clothes to be washed.
[0010]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above object, and according to claim 1, a tank for accommodating an object to be washed, a cleaning liquid supply system for supplying a cleaning liquid into the tank, A drainage system for discharging the cleaning liquid to the outside, a washing step of storing hot water as the cleaning liquid in the tub and washing the object to be cleaned with the hot water in a single washing process; In a hot water washing machine, at least a rinsing step of supplying and storing water as a cleaning liquid after draining the hot water through a drainage system and rinsing an object to be cleaned with the water,
On the downstream side of the drainage system, a water storage tank for storing water used in the rinsing process is provided, and the water used in the rinsing process of the previous washing process is stored in the water storage tank as water for lowering the temperature. The hot water used in the washing step of the treatment is introduced into a water storage tank, mixed with water for cooling, the temperature of the hot water is lowered, and then drained to a sewage system connected downstream of the water storage tank.
[0011]
According to a second aspect of the present invention, there is provided the hot water washing machine according to the first aspect, further comprising heating means for heating the cleaning liquid used in the washing step.
[0012]
According to a third aspect of the present invention, the water storage tank is provided with an overflow pipe for overflowing to a downstream sewage system when a predetermined amount of water is exceeded. It is a hot water washing machine as described.
[0013]
The washing process according to claim 4, wherein in one washing process, hot water is stored in the tub as a cleaning liquid, and the object to be cleaned is washed with the hot water by hot water. In the hot water washing method, at least a rinsing step of supplying and storing water as a cleaning liquid after draining the hot water through a drainage system, and rinsing an object to be cleaned with the water,
Store the water used in the rinsing process of the previous washing process as cooling water, mix the hot water used in the washing process of this washing process with the cooling water, and lower the temperature of the hot water used this time. A hot water washing method characterized by draining water from a sewage system to a sewage system.
[0014]
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 hot water washing machine according to an embodiment of the present invention, FIG. 2 is a front view showing an internal structure of the hot water washing machine of this embodiment, FIG. 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.
[0015]
As shown in these drawings, the illustrated hot water washing machine 1 of the present embodiment is a horizontal hot water washing machine in which the rotating shaft of the rotating drum 2 is supported substantially horizontally, and is, for example, infectious in hospitals and the like. To store clothes to be washed, such as clothes, underwear, diapers, etc., which hold pathogens and excrement, and perform a washing process including at least a washing step with hot water and a rinsing step with water. The hot water washing machine is capable of performing a dehydration step in addition to the above. That is, the hot water washing machine 1 of the present embodiment has a substantially horizontal shape that stores hot water at least in the washing step and water in the rinsing step inside a substantially rectangular parallelepiped housing 4 having the opening and closing door 3 on the front surface. A supported cylindrical outer drum 5 is formed in a compartment, and a rotating drum 2 having a substantially horizontal bottomed cylindrical shape having a plurality of through holes 6 formed in a peripheral wall is rotatably accommodated in the outer drum 5. The rotating drum 2 accommodates an object to be washed and supplies water or warm water into the outer shell 5 to generate hot water by a heating means. The washing object is washed, and after a washing process is completed, a water drainage valve connected to the outer shell 5 is opened through a rinsing step to discharge water from the outer shell 5, The rotating drum 2 is rotated to remove water contained in the object to be washed by centrifugal force (dehydration step). It is made to so that.
[0016]
The outer body 5 is a substantially horizontally supported cylindrical hollow space defined at a substantially upper central portion of the housing 4, and a box-shaped storage tank 33 is integrally provided at a lower end bottom portion. The lower half portion including 33 functions as a tank for storing hot water, water, and the like, and a heating heater 33h is provided in the storage tank 33 as heating means. A circular opening 7 is formed on the front surface of the outer body 5 and communicates with an input port 24 of the rotary drum 2 described later. The opening and closing door 3 is opened in the opening 7 via a seal member 8 by a hinge mechanism or the like. It is mounted so that it can be opened and closed. Therefore, when the opening and closing door 3 is closed, it is sealed by the sealing material 8, so that hot water, water, and the like can be stored without leaking from the outer shell 5.
[0017]
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 arranged between 10a and 10b to absorb an impact due to an eccentric load or the like.
[0018]
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.
[0019]
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 switch and supply several kinds of chemicals, a processing chemical supply valve 13 is interposed. 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.
[0020]
As a disinfectant, an agent that oxidatively decomposes waste, such as sodium hypochlorite, hypochlorous acid such as potassium hypochlorite, bleaching powder, hydrogen peroxide, potassium permanganate, manganese dioxide, iron compounds, percarbonate Sodium, ozone, organic peroxide, chlorine dioxide, chlorite, persulfate, periodate, etc., among which sodium hypochlorite, bleaching powder, perchlorate, persulfate, persulfate, etc. Preferably, it is iodate. Note that sodium hypochlorite is suitable because it functions as both a disinfectant and a deodorant.
[0021]
The deodorant is a compound that decomposes at least one of hydrogen sulfide, methyl mercaptan, methyl sulfide, and ammonia, which are odor components of filth, and is a compound such as sodium hypochlorite and potassium hypochlorite. Chlorate, bleach, hydrogen peroxide, potassium permanganate, manganese dioxide, sodium percarbonate, ozone, organic peroxide, chlorine dioxide, chlorite, perchlorate, persulfate, periodate Oxidizing agents such as ferrous compounds, titanium oxide, zirconium oxide, silicon oxide, calcium oxide, aluminum oxide, alum, aluminum sulfate, copper sulfate, zinc carbonate, zinc sulfate, zinc chloride, and nickel, cobalt, platinum, palladium , Silver, molybdenum, ruthenium and other metal compounds, organic aldehyde compounds, iron (III) -phthalocyanine, derivatives And the like.
[0022]
A drainage pipe 14 as a drainage system is connected downward to the storage tank 33 at the lower end of the outer shell 5, and a drainage valve 16 is provided on the drainage pipe 14 through a bellows pipe 15. The tip portion 14a is hung 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 washing liquid such as hot water and water stored in the outer shell 5 is discharged into the water storage tank 17 to store the water. It can be temporarily stored in the tank 17.
[0023]
The water storage tank 17 is a substantially rectangular parallelepiped tank, 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 1.2 times the water storage capacity in the outer shell 5. Or more. The reason is that the temperature of the water discharged from the water storage tank 17 to the sewer can be suppressed to 60 ° C. or less even if the temperature of the hot water is 95 ° C. and the temperature of the water supply at the time of intense heat is 30 ° C. That is, assuming that the water storage capacity of the outer shell 5 is Q, the capacity of the water storage tank 17 is nQ, the specific heat is “1”, and the heat-resistant temperature (allowable drainage temperature) of the sewage system is 60 ° C., (95 × Q + 30 × nQ) / ( Q + nQ) <60, and n> 1.17.
[0024]
In order to discharge the sterilized and disinfected residue settled in the water storage tank 17, a drainage system 19 on the downstream side is drained through a drain pipe 18 and a drain discharge valve 18 ′. The upper end inlet of the overflow pipe 20 is connected to the upper central part on the right side of the water storage tank 17, and the lower end outlet merges into the sewage system 19, and the water storage amount of the water storage tank 17 is a predetermined water amount. Is exceeded, the water overflowing from the overflow pipe 20 is drained to the sewage system 19.
[0025]
The water storage tank 17 stores low-temperature water used in a rinsing step described later as cooling water, and discharges and mixes hot water used in a washing step described later into the water storage tank 17 to mix hot water. It is a tank for lowering 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. As shown in FIG. 5, the stirring means in the present embodiment is configured by arranging partition plates 34 alternately up and down in the water storage tank 17 to define a drain passage 35, and The distal end portion 14a is immersed in the inlet side of the drain passage 35, and the upper end inlet of the overflow pipe 20 is connected to the upper part of the outlet side of the drain passage 35. In this way, with a simple structure that only passes through the drain passage 35, the hot water discharged from the outer shell 5 and the cold cooling water in the water storage tank 17 are efficiently mixed and cooled, and the water (hot water) is cooled. Is discharged to the sewage system 19 on the downstream side. In the present embodiment, the stirring means is constituted by the partition plate (baffle plate) 34 for partitioning the drain passage 35 in the water storage tank 17, but is not limited to this, and is rotated by a driving device such as a motor. It may be constituted by a driven stirring blade or the like. Stirring by the driving device not only contributes to promoting the temperature drop, but also has the effect of preventing sedimentation of dirt and the like in the storage tank 17.
[0026]
The drain pipe 14 is hung down from the outer shell 5, and the tip (lower end) 14 a of the drain pipe 14 is disposed lower than the level of the cooling water stored in the water storage tank 17 (the upper end inlet of the overflow pipe). Always be closed at the water level. Therefore, the drain pipe 14 functions as an air trap, and it is possible to prevent the smell in the storage tank 17 from flowing back into the outer shell 5.
[0027]
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. A heating heater 33h for heating the water supplied from the water supply pipe or heating or maintaining the temperature of the hot water supplied from the hot water supply pipe is provided in the storage tank 33. A steam jet pipe (not shown) may be provided as a heating means for directly blowing steam from a boiler or the like into the supplied water to generate hot water or for steam sterilization.
[0028]
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.
[0029]
The rotating 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 in the front surface 2 a 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 to be able to rotate forward / reverse, low speed / high speed by the driving means 23. Further, on the inner surface of the peripheral wall of the rotating drum 2, a plurality of protrusions 22 are arranged at equal intervals along the circumferential direction, for example, at three to six places, for scooping up and agitating an object to be washed by rotational force. I have. 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.
[0030]
In the hot water washing machine 1 of the present embodiment, the water-contacting parts such as the outer shell 5, the rotating drum 2, the opening / closing door 3, the drain pipe 14, the drain valve 16 and the water storage tank 17 are all made of stainless steel (SUS304) or the like. It is formed of a material having corrosion resistance, chemical resistance, heat resistance and the like. An operation panel 32 is provided at the upper left of the front surface of the housing 4 and is connected to a control device.
[0031]
Next, the operation and the washing process in the hot water washing machine 1 of the present embodiment will be described. As described above, the hot water washing machine 1 of the present embodiment is a hot water washing machine provided with the horizontal rotating drum 2, and can perform all washing processing by putting an article to be washed into the rotating drum 2. it can.
[0032]
First, the opening / closing door 3 is opened, and an article to be washed, such as clothing holding infectious pathogenic bacteria or clothing to which excrement is attached, is put into the rotating drum 2. When the start switch of the operation panel 32 is turned on after the door 3 is closed, the control device closes the door 3 based on a signal from a door open / close detector (not shown) provided in the housing 4. After confirming that the water supply valve is opened under the control of the control device, a predetermined amount of water is supplied into the outer shell 5, and the object to be washed is immersed in water in the rotary drum 2.
[0033]
In the present embodiment, when water is supplied to a position below the center of the rotary drum 2 and the liquid level is detected by a liquid level detector (not shown), the control device is controlled based on a signal from the liquid level detector. Closes the water valve. When the water level in the processing chamber rises to the danger zone, the control device stops the operation based on the signal from the liquid level detector and is drained from the overflow tube 21 into the water storage tank 17.
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 rotates the motor 29 to rotate the rotary drum 2, and the rotation causes the motor to rotate. Start the pre-washing process of the washing.
[0034]
When the pre-washing step is completed, the drain valve 16 provided in the middle of the drain pipe 14 is opened, and the water in the outer shell 5 is drained and stored in the water storage tank 17.
[0035]
After the drainage of the water used in the pre-washing step is completed, under the control of the control device, the processing chemical liquid supply valve 13 is opened, a predetermined amount of the processing chemical liquid is supplied into the outer shell 5, and the hot water supply valve is opened. Thus, a predetermined amount of hot water is supplied, whereby a processing solution (cleaning liquid) having a predetermined concentration is stored in the outer shell 5. As described above, when the liquid level detector detects the level of the processing liquid, the control device closes the hot water supply valve based on a signal from the liquid level detector.
[0036]
In this manner, when a predetermined amount of the heated cleaning liquid (hot water) is supplied into the outer shell 5 and the object to be washed in the rotary drum 2 is immersed, the control device rotates the motor 29 to rotate. The drum 2 is rotated, and a main washing step of separating dirt from an object to be washed by this rotation is performed. The temperature of the heat treatment liquid is 80 to 100C, preferably 85C or more. When heated to 85 ° C., disinfection and sterilization can be reliably performed, and moreover, dirt and the like can be effectively separated.
[0037]
When the door 3 is closed, the inside of the outer shell 5 is sealed, so that no odor leaks out during the washing process such as pre-washing or main washing.
[0038]
Further, when the object heated by the treatment liquid is rotated by the rotating drum 2, the object to be washed can be lifted up by the protrusions 22, lifted high, and then dropped and agitated. Can be done.
[0039]
When the dirt and the like are separated, they pass through the through holes 6 of the rotary drum 2 and settle at the bottom of the storage tank 33 at the lower end of the outer shell 5. Therefore, there is no inconvenience that dirt or the like enters between the rotary drum 2 and the outer body 5 to prevent the rotation of the rotary drum 2, and there is no problem even if this gap is set to be narrow. Further, dirt and the like floating in a state of being dispersed in the processing liquid gradually settles at the bottom of the storage tank 33 through the through-hole 6 of the rotary drum 2.
[0040]
When the separation of dirt and the like proceeds in this manner, the separated dirt and the like gradually goes out of the rotary drum 2 through the through hole 6 of the rotary drum 2 and precipitates at the bottom of the storage tank 33. In 2, items to be washed such as clothing that has been washed and disinfected and sterilized remain.
[0041]
When the main washing step is completed, the drain 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 cold water used in the rinsing step in the previous washing process is stored in the water storage tank 17 as water for lowering the temperature, the hot water (high-temperature treatment liquid) used in the main washing process in the current washing process is stored in the outer shell 5. And mixed with the cooling water in the water storage tank 17, and the temperature of the hot water can be lowered (cooled) by mixing the cooling water with the hot water. Since the water storage tank 17 is provided with the overflow pipe 20, the temperature-reduced water in the water storage tank 17 increased by the introduction of the hot water overflows from the overflow pipe 20 in accordance with the amount of the introduced hot water. As a result, the water is discharged to the sewage system 19 on the downstream side.
[0042]
The drainage from the water storage tank 17 to the sewage system 19 is not necessarily limited to the one through the overflow pipe 20. For example, only the overflow pipe 20 is used at the beginning of mixing when hot water is injected into the water storage tank 17 and mixed. , The drain discharge valve 18 ′ may be opened later, and the filth that tends to accumulate at the bottom of the water storage tank 17 may be discharged to the sewage system 19. For this reason, the partition plate 34 of the water storage tank 17 shown in the drawing is configured so that the lower end is separated from the tank bottom surface so that the passage of dirt and the like does not hinder the discharge of dirt.
[0043]
When the water storage tank 17 is provided with a stirring means, the hot water discharged from the outer shell 5 and introduced into the water storage tank 17 by the stirring means is mixed with the cooling water while being stirred. Temperature can be promoted.
[0044]
In this way, when the hot water is cooled and then drained to the sewage system 19, it is possible to prevent the hard PVC pipe and the like constituting the sewage system 19 from being deformed or damaged by heat. Further, the process time can be shortened by reducing the water and sewage charges and the water supply time, and the clothing as the object to be washed of the rotating drum 2 is not rapidly cooled, so that fiber shrinkage does not occur.
[0045]
When the draining step is completed, the rotating drum 2 is rotated at a high speed in a state where the article to be washed is accommodated in the rotating drum 2 to perform a rough dewatering step. Note that this rough dewatering step is appropriately performed as needed and is not essential.
[0046]
When the rough dewatering step is completed, the water supply valve 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 a drain step, and the water in the outer shell 5 is discharged into the water storage tank 17. 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 cooling water for cooling hot water to be used.
[0047]
When the final draining step is completed, the process shifts to the main dewatering step. This dehydration step is performed by rotating the rotary drum 2 with the drain valve 16 opened to remove water contained in the article to be washed by centrifugal force. Then, the main spin-drying process is completed, and all the current washing processes are completed.
[0048]
When the washing process is completed through each of these steps, the clothes and other items to be washed remaining in the rotating drum 2 are washed and disinfected and sterilized. can do.
[0049]
As described above, the hot water washing machine 1 of the present embodiment heats and disinfects and sterilizes contaminants as a pre-disposal treatment of waste items such as disposable diapers as well as reusable items to be washed such as surgical gowns and working clothes. It can be used for processing.
[0050]
In particular, when the present invention is applied to the processing of a used disposable diaper, when the used disposable diaper is rotated in the rotating drum 2 in a state of being immersed in hot water, the article to be washed is dropped high after being raised by the protrusions 22 and then dropped. Can be easily separated by the impact of this drop, and when the heat-sealed part of the front cover sheet of the disposable diaper is softened by heat, it is peeled off from this part to remove the internal absorbent. It is easy to come out, and if the stirring under heating is continued to some extent, all the face cover sheets and the nonwoven fabric sheet on the inner surface of the disposable diaper will be dismantled, and these more encapsulated cellulose and superabsorbent polymer will be dismantled separately. And is preferred. The disintegrated cellulose can be collected and reused.
In the case of a used disposable diaper, the covers and the like remain in the rotating drum 2, but since the remaining covers and the like have been subjected to heat sterilization or disinfection, they are discarded as general waste after being removed from the rotating drum 2. can do.
[0051]
In the above embodiment, only an example of the washing process is described, and the processing method, the processing order, and the like are not limited to the present embodiment. For example, hot water may be used for the cleaning liquid used in the pre-cleaning step. Further, the washing step is not limited to the two steps of the pre-washing step and the main washing step shown in the above-described embodiment, and may be performed only once, or may be repeated several times.
[0052]
Further, the hot water washing machine 1 of the present embodiment is configured as a so-called horizontal hot water washing machine in which the rotating drums 2 are arranged horizontally, but the type and system are not limited at all. For example, A so-called vertical hot water washing machine in which the rotating drum 2 is arranged vertically, a so-called one-way hot water washing machine in which opening and closing doors are attached to both ends of the rotating drum 2 and the outer shell 5 in the axial direction, and the like. It may be constituted as. Further, in the case of a used disposable diaper washing machine, a mechanism for filtering and collecting the decomposed cellulose and pressing the decomposed cellulose may be added in the middle of the drainage system.
[0053]
Further, in the above-described embodiment, the overflow pipe 20 is provided in the water storage tank 17 so that the hot water discharged from the outer shell 5 is sequentially overflowed with the introduced water. You may comprise so that it may drain to a sewer system. For example, the capacity of the water storage tank is set large, and a drain valve is provided in the water storage tank.When the drain valve is closed, all the hot water discharged from the outer shell is introduced into the water storage tank to lower the temperature, and thereafter, The drain valve may be opened to drain to the sewer system. With this configuration, it is possible to reduce the difference in the temperature of the water discharged to the sewage system. Further, the drainage system for draining water from a tank such as an outer shell to a water storage tank is not limited to a system for injecting water into the water storage tank from above, and for example, a configuration in which the tank is connected to a side surface of the water storage tank and is injected from the side. Good.
In short, the water storage tank of the present invention stores low-temperature water used in the rinsing step in the previous washing process as cooling water, and mixes hot water used in the washing process in the current washing process in the water storage tank. Any piping configuration may be used as long as the temperature can be lowered.
[0054]
【The invention's effect】
As described above, according to the present invention, the following excellent effects can be obtained.
That is, a water storage tank for storing low-temperature water used in the rinsing step is provided downstream of the drainage system for discharging the cleaning liquid in the tank to the outside, and the water used in the rinsing step of the previous washing process is stored in the water storage tank. The hot water used in the washing process of this washing process was drained to a water storage tank, mixed with the water for cooling, the temperature of the hot water was lowered, and then connected to the downstream side of the water storage tank. Drain into sewer system.
As described above, since the water is drained to the sewage system after passing through the water storage tank, the inconvenience of thermally deforming or thermally damaging the tubing used in the sewage system can be eliminated. Further, since the water used in the rinsing step in the previous washing process is used as cooling water, it is possible to suppress an increase in water and sewage charges, and the amount of water used does not greatly depend on the season. Furthermore, since the temperature of the article to be washed does not drop sharply, fiber shrinkage of clothes does not occur.
Further, according to the present invention, the water supply time in the conventional cooling down can be reduced, so that the efficiency of the washing process can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing an appearance of a hot water washing machine according to an embodiment of the present invention.
FIG. 2 is a front view showing the internal structure of the hot water washing machine according to the embodiment.
FIG. 3 is a side view showing an internal structure of the hot water washing machine according to the embodiment.
FIG. 4 is a rear view showing the internal structure of the hot water washing machine according to the embodiment.
FIG. 5 is a schematic view showing a stirring means of a water storage tank in the hot water washing machine of the present embodiment.
[Explanation of symbols]
1 Hot water washing machine
2 rotating drum
2a Front
3 opening and closing door
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
32 Operation panel
33 storage tank
33h heater
34 Divider
35 drainage channel

Claims (4)

A tub for storing the object to be washed, a cleaning liquid supply system for supplying a cleaning liquid into the tub, and a drainage system for discharging the cleaning liquid in the tub to the outside thereof, and a single washing process allows A washing step of storing hot water as a cleaning liquid and hot-washing the object to be cleaned with the hot water, and supplying and storing water as a cleaning liquid after draining the hot water in the tank through a drainage system; In a hot water washing machine performing at least a rinsing step of rinsing the object to be washed,
On the downstream side of the drainage system, a water storage tank for storing water used in the rinsing process is provided, and the water used in the rinsing process of the previous washing process is stored in the water storage tank as water for lowering the temperature. The heat characterized by introducing the hot water used in the washing step of the treatment into the water storage tank, mixing with the cooling water, lowering the temperature of the hot water, and then draining the water to the sewage system connected downstream of the water storage tank. Water washing machine. The hot water washing machine according to claim 1, further comprising a heating means for heating the cleaning liquid used in the washing step. The hot water washing machine according to claim 1 or 2, wherein the water storage tank is provided with an overflow pipe that overflows to a downstream sewage system when a predetermined amount of water is exceeded. In one washing process, hot water is stored in the tub as a cleaning liquid, and the hot water in the tub is drained through a draining system after the washing step, in which the hot water is used to wash the object to be cleaned with the hot water. In a hot water washing method, at least a rinsing step of supplying and storing water as a cleaning liquid after draining and rinsing an object to be cleaned with the water,
Store the water used in the rinsing process of the previous washing process as cooling water, mix the hot water used in the washing process of this washing process with the cooling water, and lower the temperature of the hot water used this time. A hot water washing method characterized by draining water from a drain into a sewage system.

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