JP6396764B2 - Operation method of continuous washing machine and continuous washing machine - Google Patents

Description

  The present invention relates to a continuous washing machine mainly used for washing sheets, yukata, pillow cases, bath towels, etc. used in hotels and hospitals, and the temperature of the laundry discharged from the washing machine according to the type of laundry. It is related with the continuous washing machine which made change possible.

  A plurality of washing tubs that are partitioned by a partition in the rotating drum and that are continuous in the axial direction of the rotating drum are provided, and are adjacent to the downstream of the laundry feeding direction from the first tub to which the laundry is put into the final tub. A continuous washing machine that sequentially transfers laundry to a tank (hereinafter referred to as “next tank”) and performs continuous washing and rinsing is known. This type of continuous washing machine includes a feeding device that sends laundry to the next tub in each tub, and performs washing in each tub by swinging the rotating drum while holding the feeding device upward. The laundry is transferred to the next tub by rotating the rotary drum once in the operation direction.

  The structure of the continuous washing machine is roughly divided into two types, and what is called double-bore type continuous washing in which the entire tank of the rotary drum is covered with the outer drum (for example, Patent Document 1) And there is what is called single cylinder type continuous washing (for example, Patent Document 2) in which only a tank that requires heating and water supply / drainage has a partially double structure. In single cylinder continuous washing, an outer cylinder fixed to the device frame is provided only in a tank that needs to perform steam heating, water supply, drainage, etc., and the rotary cylinder and the outer cylinder are sealed with a seal. Yes.

  There are two types of rinsing methods in a continuous washing machine. There are a counter flow method in which rinsing water is flowed in the opposite direction to the flow of laundry, and a batch rinsing by draining and supplying water to each tank individually. . At present, the counterflow method is the mainstream, but the counterflow method of rinsing with single cylinder continuous washing is performed by punching part of the partition walls separating the rinsing tanks and part of the spiral partition plate. A counter flow is realized by opening a hole and the water level difference between the tanks.

  Some continuous washing machines have a structure in which a paste or the like is added to laundry already washed in a final rinsing tank or a processing tank provided thereafter.

  The laundry washed by the continuous washing machine is dehydrated by a dehydrator installed downstream of the washing line, and then sent to an ironer via a conveyor and a shaker tumbler.

  A dryer that evaporates moisture contained in laundry with heated air consumes a large amount of heat energy. Therefore, in the continuous washing machine having the above-described structure, heat exchange is performed between the rinse water supplied to the rinse tank and the waste water discharged from the main wash tank, and the water supplied to the rinse tank is heated and heated. Patent Document 3 proposes to reduce the heat energy necessary for drying in the dryer so that the laundry is sent to the dryer.

Japanese Patent Application No. 2009-129507 Japanese Patent Laid-Open No. 5-146583 JP 2010-214002 A

  As described above, the continuous washing machine is mainly used for washing laundry called linen products such as sheets, yukata, pillow cases and bath towels used in hotels and hospitals. When washing face towels, bath towels, etc., it is necessary to dry completely without leaving moisture with the dryer, so much heat is required for drying, and the amount of heat generated by raising the temperature of the laundry put into the dryer Reduction effect is great. Therefore, the continuous washing machine as proposed in Patent Document 3 is advantageous in terms of energy saving.

  However, sheets, wrapping cloths, pillow cases, etc., need to be inserted into an ironer and ironed in order to keep wrinkles, and almost no heat is needed for unwinding with a dryer or shaking tumbler. And not. In addition, laundry washed by a continuous washing machine is often dehydrated by a press-type dehydrator. However, when the laundry is dehydrated in a high temperature state, wrinkles caused by pressing become tight, and a roll ironer There is a problem that it becomes difficult to stretch wrinkles.

  Also, in the case of synthetic fiber laundry such as polyester, if the dehydration is performed at a high laundry temperature, there is a problem that dehydration and wrinkles are difficult to remove, and the temperature of the laundry discharged from the continuous washing machine is high. It is not preferable to become too much.

  Therefore, the continuous washing machine having a structure for heating the water supplied to the rinsing tank can only process laundry that is completely dried by a dryer such as a bath towel or a towel cloth. Laundry coming out of hotels and hospitals includes sheets, yukata, and pillow cases in addition to towels. To wash these items, you must install a separate washing machine that does not heat rinse water. In other words, there has been a problem that a continuous washing machine with energy-saving properties for heating and discharging laundry cannot be introduced unless it is a laundry factory having a plurality of laundry lines.

  The present invention solves the problems of the conventional continuous washing machine as described above, and loosens the laundry that is completely dried by a dryer such as a bath towel, and leaves moisture such as a sheet or pillow case. It is an object of the present invention to obtain a continuous washing machine having a structure excellent in energy saving, which can be washed together with laundry to be ironed.

  In the present invention, as the washing condition set in the controller F for each lump of laundry put into the continuous washing machine, the water temperature of the final stage tubs 9 and 10 of the continuous washing machine can be set, and the final stage Adjust the temperature of the water supplied to the final tank so that the water temperature of the tanks 9 and 10 is set to the temperature of the laundry transferred to the tank, or heat steam to the final tank. For laundry that is completely dried in a dryer by supplying or stopping its flocculated water, rinsing or processing with warm water, and for laundry to be shaken, water at a relatively low temperature of 40-50 ° C. The above-mentioned problem is solved by controlling the temperature of the final-stage tank so that it is rinsed or processed.

  When the water temperature of the tank is controlled by the temperature of the feed water supplied to the final stage tanks 9 and 10, cold water (room temperature water) is discharged by the heated waste water discharged from the main washing tank and the rinsing tank of the continuous washing machine. A heat exchanger C for heating, and a bypass flow path 37 that does not pass fresh water (generally room temperature water) through the heat exchanger C in the water supply pipes 38 and 39 of the tanks 9 and 10 in the final stage; By providing the switching valves 46 and 47 for controlling the ratio of water flowing through these flow paths, the temperature control of the final tanks 9 and 10 can be performed using the exhaust heat of the continuous washing machine. . In this way, it is possible to obtain a continuous washing machine excellent in energy saving that warms and discharges laundry that is completely dried by a dryer without consuming excess heat energy.

  That is, the temperature of the final stage tanks 9 and 10 can be set for each of the washing condition storage areas 61 to 70 of the controller F that controls the operation of the continuous washing machine. When the temperature exceeds the set temperature or becomes low, only the cold water is supplied to these tanks without passing through the heat exchanger C by the switching valves 46 and 47, or the water and the cold water passed through the heat exchanger C are supplied. It joins so that the water of the temperature corresponding to setting temperature can be supplied to the tanks 9 and 10 of the last stage.

  When the final tank 10 is a processing tank as in the examples described later, there are processing that uses almost no water and processing that uses a large amount of water. In the former case, even without adjusting the water temperature of the processing tank, The temperature of the laundry is almost determined by the water temperature of the preceding rinsing tank 9. On the other hand, in the latter case, it is only necessary to control the water temperature of the processing tank 10 at the final stage, and it is preferable to adjust both the water temperatures of the tanks 9 and 10 if they are intermediate between the former and the latter. That is, the temperature control of a plurality of final-stage tanks or any one of them is performed according to the processing contents performed in the final-stage tanks 9 and 10.

  In the case of a sheet, the set temperature of the final-stage tanks 9 and 10 is generally said to exceed 50 to 60 ° C, and wrinkles are likely to remain, and it is appropriate to set the temperature to 50 to 60 ° C or less. It is said that. However, in the experimental results conducted by the inventors of the present application, the result is that when the laundry temperature exceeds 40 to 50 ° C., dewatering wrinkles become tight, and when the temperature is 40 to 50 ° C. or less, there is little influence on the wrinkles. Therefore, in the case of sheets, it is considered that the set temperature is preferably 40 to 50 ° C.

  In the continuous washing machine of the present invention, laundry that is completely dried can be discharged at a high temperature, and laundry that is ironed after being shaken can be discharged at a low temperature.

  According to the continuous washing machine of the present invention, even when laundry such as towels to be completely dried and laundry such as sheets to be shaken are continuously added, the laundry to be completely dried is dried at a high temperature. Since it is put into the machine, the heat energy necessary for drying can be reduced, and since the laundry to be shaken is put into the dehydrator at a low temperature, the generation of wrinkles due to dehydration can be prevented, Wrinkles can be reliably stretched with an iron.

  Therefore, according to the present invention, there is an effect that it is possible to provide a continuous washing machine excellent in energy saving that can process laundry to be completely dried and laundry to be shaken by the same machine.

Block diagram showing an embodiment Block diagram of the controller of the apparatus of FIG.

  Hereinafter, the present invention will be described in detail with reference to the accompanying block diagrams showing embodiments. The continuous washing machine main body of the illustrated embodiment is a single-cylinder continuous washing in which the rotary drum 11 is divided into ten washing tubs 1 to 10, and the first and second tubs counted from the upstream side of the laundry flow are prewashed. The tank, the 3rd to 7th tanks are the main washing tank, the 8th and 9th tanks are the rinse tanks, and the 10th tank is the processing tank. The ninth tank is the final tin tank, the tenth tank is the final tank, and the final rinsing tank 9 and / or the processing tank 10 is the final tank depending on the processing content in the final tank.

  Among the ten tanks, the third, fourth tank, six tanks, and 8-10 tanks have a double structure including the outer body 12. Punch holes are provided in the peripheral wall of the rotary drum 11 where the outer drum 12 is provided, and steam and water are supplied and drained from pipes provided in these tanks on the outer drum.

  The laundry feed structure between the tanks of the rotary drum 11 is a bottom feed (spiral feed) structure, in which the rinse water is supplied from the outer drum of the final rinse tank 9 and discharged from the first rinse tank 8, that is, washing. The rinse water flows in the direction opposite to the object feeding direction, and the partition wall between the rinsing tanks 8 and 9 is provided with punch holes through which the rinsing water flows.

  The prewash water is supplied to the prewash first tank 1 through the hopper 13 and discharged from the overflow pipe (overflow pipe) 23 of the main wash first tank 3. The main washing tanks 3 to 7 are a batch washing system, and the laundry is sequentially sent together with the main washing water from the main washing first tank 3 to which the main washing water is supplied to the main washing final tank 7. In the fifth tank and the seventh tank having a single structure to which no water supply / drain pipe is connected, the main washing is performed under the same conditions as the fourth tank and the sixth tank adjacent to the upstream side.

  In the figure, a circle P indicates a pump, a circle T indicates a temperature detector, a circle LV indicates a water level meter, and a square rising from a line indicating a pipe indicates a flow meter.

  The continuous washing machine of the illustrated embodiment includes a heat exchanger C and a service tank D that temporarily stores hot water supplied to the heat exchanger. The continuous washing machine of the illustrated embodiment further includes a hot water tank B and a cold water tank A for storing hot water and cold water (normal temperature water) to be recycled. Overflow water (overflow water) and waste water from the first rinsing tank 8 flow into the hot water tank B through the pipe 26. The hot water that has flowed in is supplied to the main washing tank 3, 4 or 6 and the hopper 13 connected to the prewash tank through the pipes 27 and 28 and reused.

  The cold water tank A is supplied with the drainage of the processing tank 10 and the drainage of the squeeze type dehydrator E for dehydrating the laundry washed by the washing machine through the pipes 30 and 31. Is supplied to the prewash tank 1 through the pipe 32 and the final rinse tank 9 and the pipe 33 and the hopper 13.

  If protein-based dirt is adhered to the laundry put into the hopper 13, if the pre-washing is performed with warm water, the protein may be solidified and cannot be washed. When there is such a fear, cold water is supplied to the prewash tank 1, and when there is no such a fear, hot water is supplied.

  The continuous washing machine is provided with a steam pipe 21 and a fresh water pipe 22. The steam in the steam pipe 21 is supplied to the tank provided with the outer body 12 through the respective electromagnetic valves 41..., And the hot water tank B and the cold water tank A. Each electromagnetic valve is individually opened and closed so that the temperature of the tank is maintained at the temperature set in the controller F.

  Fresh water in the fresh water pipe 22 is supplied to the processing tank 10, the hot water tank B, and the cold water tank A through the respective electromagnetic valves 42, 43, and 44. The tanks B and A are provided with liquid level gauges (float valves) so as to store a predetermined amount of hot water and cold water.

  Drain pipes (drain pipes) each having an electromagnetic valve 45 are provided at the bottom of the outer cylinder of the tank provided with the outer cylinder 12, and these drain pipes are connected to the collective drain duct 25. In addition, the main washing first tank 3 and the first rinsing tank 8 are provided with overflow pipes 23 and 24, and the prewash water flowing into the main washing first tank 3 flows into the collective drainage duct 25, The overflow flows into the collective drainage duct 25 or the above-described hot water tank B by switching the electromagnetic valves 48 and 49.

  The drainage of the collective drainage duct 25 is temporarily stored in the service tank D, supplied to the heat exchanger C by a pump 55 that is operated in a timely manner, and the wastewater that has passed through the heat exchanger is discarded.

  On the other hand, the new water pipe 22 is provided with pipes 35, 38, 39 for supplying water to the final rinse tank 9 and the final tank 10, and directly through the pipe 35 without passing through the heat exchanger C. Solenoid valves 46 and 47 for adjusting the amount of flowing water are provided. Although the fresh water is cold water (room temperature water), the heat exchanger C has the waste water heated from the continuous washing machine main body by the collective drainage duct 25 (the washing water for main washing is heated to 60 to 80 ° C.). The water supplied to the final rinsing tank 9 and / or the final tub 10 can be heated by exchanging heat with the warm water, and the solenoid valves 46 and 47 can be opened and closed. By controlling, the mixing ratio of the heated water and the unheated water is changed, and the water supplied to both or one of the final rinse tank 9 and the final tank 10 by opening and closing the electromagnetic valves 51 and 52 is controlled. The temperature can be adjusted to the temperature commanded from the controller F.

  In the illustrated embodiment, water from the cold water tank A can be merged into the rinse water supply pipe 38 via the electromagnetic valve 53, and the water in the cold water tank A can be reused as rinse water if necessary. It is like that.

  The tank provided with the outer body 12 is provided with a temperature detector and a water level meter for detecting the quantity of washing, respectively, so that the temperature and the amount of water designated by the controller F are maintained. Supply is made. Therefore, the temperature of the final rinsing tank 9 and the final tub 10 can be heated by supplying steam even when heat exchange cannot be performed by the heat exchanger C.

  The controller F is provided with storage areas 60 and 61 to 70 for storing the washing conditions set for each laundry put into the continuous washing machine and each laundry being washed in each tub. Controls the amount of washing water, the temperature, and the amount of steam supplied to the tub provided with the outer body 12 so that the washing conditions stored in the storage areas 61 to 70 are maintained.

  In the continuous washing machine of the present invention, the water temperature of the final tub 9 and / or 10 can be set in the washing condition set in the controller F according to the type of laundry. In the operation of the continuous washing machine, each time the laundry is sent to the adjacent downstream tub by one rotation of the rotating drum 11, the washing condition of each tub is also transferred (shifted) to the downstream storage area. Control is performed.

  As for the laundry, items to be washed under the same washing condition are put together into the hopper 13 one by one, and the washing condition of the inputted laundry is set in the storage area 61 of the controller corresponding to the first tank. . Each time the rotating drum 11 makes one rotation, that is, whenever the laundry is transferred to the next tub, the controller F stores the washing condition data stored in the storage area corresponding to each tub. Shifting to the area, the controller determines the amount of washing water to be supplied, the temperature and the amount of steam so that the water level and temperature of the washing water in each tub become the washing conditions set in the storage area corresponding to the tub. Control.

  In the present invention, the temperature of the final tank 9 and / or 10 can be set as the washing condition to be set. For example, in the case where the temperature of the laundry does not change in the processing tank 10, if the laundry is a laundry that is completely dried like a towel, a high temperature is set as the temperature of the final rinse tank 9, and sheets to be shaken, etc. If so, set a lower temperature. Since the washing conditions shift with the transfer of the laundry, when the hand towel or bath towel is sent to the final rinsing tank 9, the controller F causes the final rinsing tank 9 to have a higher temperature. 9 is supplied with rinse water heated by the heat exchanger C. On the other hand, when the sheet or pillow case to be shaken is fed into the final rinsing tank 9, the controller F supplies cold water to the final rinsing tank 9 so that the temperature of the final rinsing tank 9 is low, and no steam is supplied. Like that.

  As described above, in the continuous washing machine of the present invention, the laundry to be completely dried is discharged at a high temperature, and the laundry to be shaken is discharged at a low temperature. Therefore, according to the continuous washing machine of the present invention, laundry such as towels to be completely dried is put into the dryer at a high temperature, so that the heat energy necessary for drying can be reduced and low. Laundry such as sheets that are shaken at a temperature is put into a dryer (or a shaking tumbler) at a low temperature, so that wrinkles can be prevented from occurring during the shaking process, and the wrinkle can be reliably stretched with an iron. There is an effect that can be done.

  Although the continuous washing machine of the embodiment described above is a single-bore type continuous washing and is a method of flowing rinsing water in a counter flow, the present invention is characterized by controlling the temperature of the laundry discharged from the continuous washing machine. Therefore, the present invention can be implemented with a structure similar to that of the embodiment even in the case of the multiple cylinder type continuous washing.

  In addition, for single-cylinder continuous washing with no outer cylinder in the final rinse tank, instead of detecting the temperature of the rinse water in the rinse tank, the temperature of the water supplied to the rinse tank is detected, and the final rinse tank is connected via a rotary joint. The present invention can be implemented by supplying rinsing water.

  In addition, the rinsing method of the above embodiment is a counter flow method, but there is also a batch rinsing type continuous washing machine in part. Although the present invention can be applied to a batch rinsing type continuous washing machine, it is more advantageous to apply the present invention to a counter flow type continuous washing machine capable of accurately controlling the temperature of the final rinsing tank. And easy.

1 to 10 Washing tubs 8 and 9 Rinsing tub 9 Rinsing final tub 10 Processing tank 11 Rotating drum 12 Outer drum 22 Fresh water piping 24 Overflow pipe 25 Collecting drain duct 36 Flow path through heat exchanger 37 Bypass flow path 38, 39 Water supply piping 46, 47 Switching valve 61-70 Storage area A Cold water tank B Hot water tank C Heat exchanger F Controller

Claims (4)

  In a continuous washing machine provided with a controller that sets the washing conditions of the tanks corresponding to each tank of the continuous washing machine, the laundry transferred to the final stage of the laundry by the laundry feeding operation of the continuous washing machine Depending on whether the laundry is completely dried after the dehydration step or is loosened without being completely dried, the water in the final tub is heated when the laundry is completely dried. How to operate a continuous washing machine. Continuous washing provided with a heat exchanger that heats water supplied to the final tub of the continuous washing machine by heated waste water discharged from the washing machine, and a controller that controls supply and drainage of the washing machine In the machine
Switch the temperature detector for detecting the water temperature of the final tank or the temperature of the waste water from the tank, and the whole or a part of the water supplied to the tank to a flow path that does not pass through the heat exchanger. The controller includes a plurality of storage areas for setting the temperature of the final-stage tub according to the type of laundry to be input, and detection of the temperature detector for each laundry feeding operation. The continuous washing machine, wherein the switching valve is controlled so that the temperature becomes the temperature of the tub set corresponding to the laundry sent to the tub.   The plurality of storage areas are provided corresponding to each tub of the washing machine, and washing conditions for transferring the water temperature of the final tub set for each laundry feeding operation to the storage area corresponding to the next tub The continuous washing machine according to claim 2, further comprising a shift means.   The continuous washing machine of Claim 2 or 3 provided with the branch valve which switches the water which passed the said last stage tank to the piping to the hot water tank which stores recycle water, and the piping to the said heat exchanger.

Images