JP2010131069A - Washing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing system reducing the amount of metal ions in water in use and waste water, preventing the generation of metal soap and preventing adverse influence on laundry, a water discharge path, or the like, by producing pure water and utilizing it in each step of washing, and also suppressing consumption of both new water and energy relating to water supply by reutilizing the waste water and effectively utilizing heat used for pure water production. <P>SOLUTION: Since the pure water is generated by flash vaporization from warm water heated in a heater 11 and the pure water is made usable in each step of washing, the amount of metal ions in the water during washing is minimized, the generation of metal soap is suppressed, and adverse influence of the metal soap on laundry and a water discharge path is prevented. Further, by using the warm water not supplied for use such as cooling water whose temperature is elevated as the water to be heated in the heater 11, the energy consumption in the heater 11 is saved. Further, by cleaning and reutilizing the waste water after being used in washing, the amount of water replenished from the outside is suppressed and water consumption is reduced as well. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a washing system that manufactures pure water and supplies it for use in each process of washing, and purifies the generated waste water and reuses it for producing pure water.

  So-called linens such as sheets and futon covers for business use are used and then washed for clean use before being reused, but used linens are collected for washing. After that, it was put into a laundry facility and was washed with water or warm water while using a detergent or the like as required.

  When washing such linen for business use, a continuous washing machine is usually used to efficiently process a large amount of laundry. As an example, there is one described in Japanese Patent Application Laid-Open No. 2006-141786.

In addition to continuous washing machines for these linens, conveyor-type washing that performs washing, rinsing, etc. continuously while carrying laundry as laundry for efficient washing Devices have been proposed, and examples thereof include those described in JP-A-51-61180, JP-A-6-170100, and the like.
JP 2006-141786 A JP-A-51-61180 JP-A-6-170100

  The conventional laundry equipment is as shown in the above-mentioned patent document. In the continuous washing machine described in the above-mentioned patent document 1, the amount of water used and discharged is large, and the laundry There has been a problem that it takes time until washing is completed by throwing an object into a tank for washing, rinsing, etc. and generating a water flow by stirring or the like to execute washing and rinsing.

  Moreover, in the washing apparatus described in the said patent document 2, 3, although it can shorten the time to washing completion by being able to perform each process of washing | cleaning continuously, about the quantity of the water discharged | used and used Had the problem of increasing the amount in the same manner as described above.

  Furthermore, in such conventional washing facilities, tap water is mainly used as washing water. Therefore, when detergent is used in combination with water in the washing process, metal ions contained in the dirt attached to the laundry are removed. In addition, metal ions contained in tap water in particular may react with soap (fatty acid salt, etc.) contained in the detergent to generate metal soap that does not dissolve in water. Metal soap remains in the laundry and may cause discoloration and a strange odor, or if discharged with drainage, will cause clogging of the drainage treatment device, and will collect a large amount of wastewater in the drainage channel. There was a problem of delaying or adversely affecting the surrounding environment.

  The present invention has been made to solve the above-mentioned problems. Pure water is produced and used in each washing process, and the amount of metal ions in water and waste water in use is reduced to prevent the occurrence of metal soap. In addition to preventing adverse effects on laundry and drainage channels, the laundry system can reduce the consumption of both fresh water and energy related to water supply by reusing wastewater and effectively using the heat used for pure water production The purpose is to provide.

  The laundry system according to the present invention includes a conveyance mechanism that conveys laundry continuously or intermittently, a washing unit that performs a washing process on the laundry conveyed by the conveyance mechanism, and after the washing process, Heating the supplied water in a laundry system having at least a rinsing unit that performs a rinsing process on the laundry conveyed by the conveying mechanism and a dehydrating unit that performs a dehydrating process on the laundry after the rinsing process Then, a heater for making warm water at a predetermined temperature, an evaporator to which a part of the warm water obtained by the heater is supplied and evaporating the warm water in a reduced pressure space, and vapor phase water evaporated by the evaporator A condenser that obtains pure water that does not contain metal ions by heat exchange with predetermined cooling water, and the remaining hot water that is not supplied to the evaporator among the water heated by the heater. Heat exchange with pure water obtained in A heat exchanger for pure water that obtains warm pure water, a water purifier that obtains purified water by removing contaminants from the waste water generated in the washing section, rinsing section, and dehydrating section, and the cooling water At least a water supply source for supplying fresh water, which is at least a part of the hot pure water or pure water that has not been heated by the pure water heat exchanger, After the hot water that has been supplied and has not been completely evaporated in the evaporator and remains in the liquid phase, the cooling water whose temperature has increased after the heat exchange with the condenser, and the pure water with the pure water heat exchanger New water supplied from the water supply source is combined with water to be heated and supplied to the heater, and purified water exiting the water purifier is supplied from the water supply source. Together with water, the cooling water is introduced into the condenser.

  As described above, according to the present invention, pure water is generated from warm water heated by a heater using an evaporator and a condenser, and the pure water can be used in each step of washing, thereby being included in the waste water. The amount of metal ions generated can be extremely reduced, the occurrence of metal soap in the drainage can be suppressed, and the adverse effects of the metal soap on the laundry and drainage can be prevented. In addition, the heat generated by the heater is also used for heating pure water, and cooling water whose temperature has risen due to heat exchange in the condenser or hot water remaining without being evaporated by the evaporator is heated by the heater. By using it as water, it is possible to appropriately recover the heat generated by the heater, and it is not necessary to continuously input a large amount of heat with the heater, and energy consumption can be reduced. Furthermore, the waste water can be purified and reused for cooling water, pure water production, and pure water heating, and the amount of water newly replenished from outside can be reduced to reduce water consumption.

  Further, the washing system according to the present invention is disposed on the rear stage side of the heat exchanger for pure water as necessary, and produces ozone water by mixing ozone generated by a predetermined ozone generator into pure water. It is equipped with an ozone water maker.

  As described above, according to the present invention, an ozone water producing device is disposed in the flow path of pure water, ozone is mixed into pure water to form ozone water, and this is used in each step of washing, particularly rinsing. This makes it possible to properly neutralize and decompose underwater detergents when washing with detergents to prevent adverse effects due to residual detergents in the laundry, and to reduce the amount of detergent components in the wastewater, which is applied to the water purifier. Reduces the burden and maintains water purification capacity, enabling more efficient water treatment.

  In addition, the washing system according to the present invention can reduce the condenser inlet temperature of the cooling water by exchanging the cooling water with another cooling medium on the upstream side of the cooling water flow path in the condenser as necessary. The heat exchanger is provided.

  As described above, according to the present invention, the heat exchanger for exchanging heat between the cooling water and the predetermined cooling medium is disposed in the front stage of the condenser, and the condenser water is condensed by lowering the condenser inlet temperature. Condensation of vapor phase water in the condenser can be efficiently advanced by increasing the temperature difference between the vapor phase water and cooling water, without increasing the pure water yield in the condenser or changing the pure water yield. It is possible to reduce the size of the condenser.

  Further, in the washing system according to the present invention, if necessary, the heater causes heat exchange between a predetermined high-temperature heat source and water to heat the water, and the waste heat component of the high-temperature heat source after heat exchange with water is performed. The working fluid is heated to operate a steam power cycle of the working fluid, and an exhaust heat recovery power generation device that generates power with the power obtained by the cycle is provided.

  As described above, according to the present invention, the exhaust heat recovery power generation device that operates with the exhaust heat of the high-temperature heat source in the heater is disposed, and heat recovery is performed on a part of the heat discharged from the heater to the outside. A part of the generated heat energy can be converted into electric power for effective use, and the heat energy can be recovered appropriately.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a block diagram of a laundry system according to the present embodiment, FIG. 2 is a schematic explanatory view of a washing mechanism unit in the laundry system according to the present embodiment, and FIG. 3 is an exhaust heat recovery power generation apparatus in the laundry system according to the present embodiment. FIG.

  In each of the drawings, the laundry system 1 according to the present embodiment executes a pure water supply unit 10 that generates pure water to be used for washing, and a process of continuously washing, rinsing, dehydrating, and the like for a large number of laundry items. It is the structure provided with the washing mechanism part 20 and the water treatment part 30 which purifies the waste_water | drain produced by washing.

  The pure water supply unit 10 is supplied with a heater 11 that heats the supplied water to obtain hot water at a predetermined temperature, and a part of the hot water obtained by the heater 11 is supplied, and the hot water is evaporated in a reduced pressure space. The evaporator 12 to be evaporated, the vapor phase water evaporated by the evaporator 12 to be condensed by exchanging heat with cooling water, and pure water is obtained, and the evaporation of the water heated by the heater 11 Heat of the remaining warm water not supplied to the condenser 12 is exchanged with the pure water obtained by the condenser 13 to heat the pure water, and the pure water heat exchanger 14 heats the pure water. The ozone water producing device 15 that introduces ozone into the pure water whose temperature has been increased to produce ozone water, the water supply source 16 that supplies fresh water that is at least part of the cooling water, and the heater 11 heats the water. And a waste heat recovery power generation device 50 that generates power by using the exhaust heat after the heat is generated. It is.

  The heater 11 is a known boiler that obtains warm water and steam by heating water supplied into the apparatus with heat generated by combustion of a predetermined fuel. The temperature is increased to a predetermined temperature at which evaporation is possible.

  The heater 11 generates steam used in processes such as washing and drying after rinsing, and generates hot water for heat exchange for heating pure water to a temperature required for washing and rinsing. The amount of heat generated by the entire heater 11 is relatively large. For this reason, the exhaust exhausted through heat exchange with water in the heater 11 has a relatively high temperature, and this exhaust is heat exchanged with the working fluid of the steam power cycle in the evaporator 51 of the exhaust heat recovery power generator 50. By doing so, the heat possessed by the exhaust is recovered.

  The evaporator 12 is a known device that efficiently evaporates water that has been heated to a predetermined temperature on the previous stage side into a container whose pressure has been reduced to the saturation pressure or lower to obtain water vapor, and is heated by the heater 11. A part of the hot water is directly supplied, and the hot water is evaporated to obtain gas-phase water containing almost no impurities. The evaporator 12 can be any flash evaporation mechanism such as a multistage flash type or a spray flash type. The liquid-phase water remaining without being completely evaporated by the evaporator 12 is discharged outside the evaporator 12 and returned to the heater 11.

  The condenser 13 causes the water in the vapor phase evaporated by the evaporator 12 to flow through one of the flow paths separated through the internal heat transfer section, and allows the cooling water to flow through the other flow path. The gas-phase water and the cooling water are subjected to heat exchange via the gas to condense the gas-phase water, and the structure itself as a heat exchanger is a known configuration. By condensing the vapor phase water with the condenser 13, pure water containing almost no impurities can be obtained.

  On the downstream side of the gas phase side flow path in the condenser 13, a pure water tank 18 for storing a predetermined amount of pure water obtained by the condenser 13, and pure water discharged from the pure water tank 18 is stored in a predetermined amount. Pumps 19 for sending to the heat exchanger 14 for pure water at the supply pressure are respectively arranged. The pure water tank 18 is configured to be able to store at least the amount of water used for one hair washing, to store the pure water condensed by the condenser 13, and to continuously flow the water amount to the subsequent stage side. On the other hand, the cooling water side flow path in the condenser 13 is connected to the inlet side of the heater 11, and the cooling water whose temperature has been increased by condensing vapor phase water flows into the heater 11.

  The pure water heat exchanger 14 includes pure water fed from a pump 19 to one flow path in a known heat exchanger, and the evaporator 12 out of hot water obtained by the heater 11 in the other flow path. The remaining warm water that is not supplied to the water is circulated to exchange heat, and the pure water is heated with warm water from the heater 11 and adjusted to a temperature suitable for use in the washing mechanism 20. To do. The other flow path is connected to the inlet side of the heater 11, and the hot water whose temperature has been lowered by heat exchange with pure water flows into the heater 11 again.

  The pure water temperature in the pure water heat exchanger 14 is adjusted by changing the area where the hot water is in contact with the heat transfer surface that transfers heat to the pure water by changing the flow path on the hot water side. This is a mechanism for adjusting the temperature to obtain an appropriate temperature state of pure water. When pure water is not heated, the flow path of the hot water is switched so that the hot water does not pass through the pure water heat exchanger 14 but is returned to the heater 11 as it is.

  The ozone water production device 15 mixes ozone generated by a predetermined ozone generator 15a with pure water that has passed through the heat exchanger 14 for pure water to produce ozone water. The pure water reaches the cleaning section 22 and the rinsing section 23 of the washing mechanism section 20 in the state of being ozone water via the ozone water producing device 15 and is used for washing, rinsing and the like. By using ozone water, it is possible to suppress the adhesion and propagation of germs due to its bactericidal action, and to properly neutralize detergent components with ozone to improve the condition after washing of the laundry, and the drainage is also neutral It can be in a close state, and the efficiency of the purification process in the water purifier 31 can be improved. As the ozone generator 15a, any one using a known silent discharge method, creeping discharge method, ultraviolet irradiation method, or the like may be used.

  The water supply source 16 supplies fresh water to be part or all of the water supplied to the heater 11 and fresh water to be part or all of the cooling water. Immediately after the system is started, water that has passed through each device in the system does not return to the inlet side of the heater 11 or the inlet side of the condenser 13, so water introduced into the heater 11 or cooling water introduced into the condenser 13 As for all, fresh water is used. When a certain period elapses after the system is started, the water that has passed through each device in the system flows back to the inlet side of the heater 11 and the inlet side of the condenser 13, so that the amount of new water introduced can be reduced. As this new water, tap water or ground water taken continuously can be used.

  The washing mechanism unit 20 includes a conveyance mechanism 21 that conveys laundry continuously or intermittently, a washing unit 22 that performs a washing process on the laundry conveyed by the conveyance mechanism 21, and a post-washing process. The rinsing unit 23 that performs a rinsing process on the laundry conveyed by the conveying mechanism 21, the dehydrating unit 24 that performs the dehydrating process on the laundry after the rinsing process, and the dehydrated laundry is dried. And a drying unit 25 for extending wrinkles.

  The transport mechanism 21 is a kind of belt conveyor that uses a water-permeable belt-like body as a transport belt, and is similar to a known belt conveyor in that the loaded laundry is transported in a predetermined direction. Detailed description will be omitted.

  The washing unit 22 sprays and supplies water and hot water together with a detergent to the laundry placed and transported on the transport mechanism 21 and releases the dirt attached to the laundry, and the spray unit. It is the structure provided with the ozone water dispersion | spreading part 22b which distributes and supplies the ozone water made with the ozone water maker 15 with respect to the laundry in 22a back | latter stage side. The supply of water or detergent to the laundry in the spray unit 22a of the cleaning unit 22 can be performed from above the laundry, from below the laundry, or from both above and below.

  The rinsing unit 23 sprays or sprays ozone water produced by the ozone water maker 15 as rinsing water on the laundry conveyed by the conveyance mechanism 21 on the rear side of the washing unit 22, and the laundry It is a device that drains detergent and free dirt components from the water. The supply of ozone water to the laundry in the rinse section 23 by spraying or spreading can be performed from above the laundry, from below the laundry, or from both above and below.

  The dehydrating unit 24 performs dehydration by carrying out the rinsed laundry by the transport mechanism 21 and then pressurizing using a press or a roller.

  The drying unit 25 performs drying while applying wrinkles of the laundry by applying a press or roll pressurization while applying steam heat to the dehydrated laundry, and the drying mechanism itself is known. Description is omitted.

  With respect to the dehydrating unit 24 and / or the drying unit 25, the entire dehydrating unit 24 and / or the drying unit 25 is accommodated in the pressure-resistant space and the entire space is decompressed, or the pressure-resistant container that accommodates the laundry on the downstream side of the dehydrating unit 24 It is also possible to reduce the moisture remaining in the laundry by evaporating under reduced pressure by reducing the pressure in the container and improving the dehydration effect. It is hard to hurt things.

  The water treatment unit 30 includes a water purifier 31 that obtains purified water by removing contaminants from the wastewater generated in each step in the washing mechanism unit 20, and a reverse osmosis membrane disposed in a subsequent stage of the water purifier 31. It is the structure provided with the water tank 33 arrange | positioned between the water purifier 32 and each part of the washing mechanism part 20, and the water purifier 31. FIG.

  The water purifier 31 is drained after the pure water or the ozone water exiting the ozone water production device 15 is used in the washing unit 22 or the rinsing unit 23 of the washing mechanism unit 20, the dehydrating unit 24, etc. Contaminants are removed with an internal filter to obtain purified water. In addition, the waste water which flowed out from each part of the washing mechanism part 20 is once stored in the water storage tank 33, and the decomposition and neutralization of the components such as the detergent by the residual ozone in the waste water are advanced, and the flow rate of the waste water flowing into the water purifier 31 is adjusted. It is a mechanism to be done.

  The reverse osmosis membrane type water purifier 32 is a known water purifier using a reverse osmosis membrane, and is disposed on the rear stage side of the water purifier 31, and the purified water exiting the water purifier 31 is passed through to contaminate the water. The amount of substance is further reduced to the same water quality as tap water. The purified water exiting the reverse osmosis membrane water purifier 32 merges with the tap water supplied from the water supply source 16 and is sent to the condenser 13 as cooling water.

  The exhaust heat recovery power generation apparatus 50 operates a generator in a steam power cycle using a non-azeotropic mixed medium as a working fluid to generate electric power. Specifically, a plurality of fluids having different boiling points (for example, And an evaporator 51 that heat-exchanges a part of the working fluid mixed with ammonia and water with the exhaust of the heater 11 that is a high-temperature heat source in a liquid state to heat the working fluid and evaporate a part thereof. The gas-liquid separator 52 that separates the working fluid heated by the vessel 51 into a gas phase component and a liquid phase component, and the separated gas phase working fluid is introduced to convert the thermal energy held by the fluid into power A turbine 53 as an expander, a generator 54 connected to the turbine 53 to generate electric power by rotational power, and a gas-phase working fluid exiting the turbine 53 as a liquid-phase working fluid exiting the gas-liquid separator 52 An absorber 55 that partially absorbs The working fluid exiting the collector is subjected to heat exchange with cooling water as a low-temperature heat source to condense the gas phase component, and the working fluid exiting the condenser 56 is compressed and directed to the evaporator 51. A pump 57 as a compressor, a regenerator 58 for exchanging heat between the liquid-phase working fluid separated by the gas-liquid separator 52 and a lower-temperature liquid-phase working fluid before being introduced into the evaporator 51, and a turbine 53 is a configuration including an extraction heater 59 for exchanging heat of a part of the gas-phase working fluid extracted from the intermediate stage 53 with the liquid-phase working fluid discharged from the condenser 56.

  Each of these configurations is the same as that used in a known system as a power generation device using a non-azeotropic mixed medium cycle, and a detailed description thereof will be omitted. The exhaust heat recovery power generation apparatus 50 uses a non-azeotropic mixed medium cycle that does not perform heat exchange between the turbine bleed air and the heater 89 in addition to the above-described configuration, or a steam power cycle (for example, a single medium) Rankine cycle) can also be used. Note that fresh water supplied from the water supply source 16 is used as the cooling water in the condenser 56. The warmed cooling water after heat exchange with the working fluid in the condenser 56 is introduced into the heater 11.

  Next, the operation of the laundry system according to this embodiment will be described. First, immediately after the system is started, only tap water as new water supplied from the water supply source 16 is supplied to the heater 11 and also to the condenser 13 and the condenser 56 of the exhaust heat recovery power generator 50. Introduced as cooling water.

  The heater 11 burns the fuel, heats the water supplied with the generated heat, and obtains hot water or steam. The warm water leaves the heater 11, partly toward the evaporator 12, and the remainder toward the pure water heat exchanger 14. Further, the steam is directed to the drying unit 25 and the like of the washing mechanism unit 20.

  When the hot water reaches the evaporator 12, a part of the hot water evaporates in the depressurized evaporator 12 to become vapor phase water. The water in the vapor phase is appropriately separated from mist and the like, then exits the evaporator 12 and is introduced into one flow path of the condenser 13. On the other hand, the hot water that is not evaporated and remains in the liquid phase is discharged out of the evaporator 12 and heads toward the inlet side of the heater 11.

  In the condenser 13, the cooling water having a low temperature is introduced into the other flow path separating the heat transfer section with respect to the one flow path into which the vapor phase water is introduced, thereby cooling the vapor phase water. It is condensed by exchanging heat with water and becomes pure water containing almost no impurities. The pure water is discharged from the condenser 13, temporarily stored in the pure water tank 18 on the subsequent stage side, and then sent to the pure water heat exchanger 14 via the pump 19. Moreover, the cooling water which received the heat | fever from the pure water side condensed in the condenser 13, and was heated up is discharged | emitted from the condenser 13, and goes to the heater 11 inlet side.

  The pure water heat exchanger 14 heats the hot water and pure water immediately after leaving the heater 11 while adjusting the amount of heat transfer in accordance with the pure water temperature required by the washing section 22 and the rinsing section 23. It will be exchanged and the temperature of pure water will be raised. The warmed pure water becomes warm pure water, leaves the pure water heat exchanger 14, a part is supplied as it is to the cleaning unit 22, and the rest goes to the ozone water producing device 15. In the ozone water producing device 15, the warm pure water is mixed with ozone to become ozone water, and is then supplied to the cleaning unit 22 and the rinsing unit 23 to be used for rinsing. In addition, as a result of raising the temperature of the pure water by heat exchange with the pure water in the pure water heat exchanger 14, the hot water whose temperature has decreased is discharged from the pure water heat exchanger 14 and directed toward the inlet side of the heater 11. It will be.

  The hot pure water that has exited the pure water heat exchanger 14 is mixed with a predetermined amount of detergent, and then fed to the washing unit 22 and is sent to the laundry conveyed from the jetting unit 22a of the washing unit 22 for a predetermined time, for example, 30. It is sprayed for 2 seconds, and the washing process of the laundry is executed. Since pure water contains no metal ions, the amount of metal soap generated in the wastewater after use can be extremely reduced. And in the washing | cleaning part 22, the ozone water which mixed ozone with the pure water is sprayed from the ozone water spraying part 22b to the laundry instead of the detergent and pure water for the last predetermined time of a process, for example, 1-2 seconds. Therefore, the decomposition of the detergent proceeds efficiently before rinsing. Depending on the type of dirt, the pure water supplied to the cleaning unit 22 is not normal warm pure water, but pure water before being heated by heat exchange is used, or the temperature is lowered by adjusting the amount of water to be heat exchanged. Pure water may be used.

  Further, the warm pure water is partly mixed with ozone in the ozone water maker 15 to become ozone water, and then is supplied to the ozone water spraying part 22b and sprayed on the laundry as described above, and the rinse part. 23 to be used for rinsing laundry. In the rinse section 23, the detergent component remaining in the laundry is washed away with ozone water, and the detergent component is decomposed by the contained ozone, so that the detergent component is reliably removed from the laundry. Ozone adhering to the laundry decomposes in a short time, so there is no effect on the laundry.

  After the laundry is rinsed by the rinsing unit 23, the laundry is conveyed to the dehydrating unit 24 and dehydrated by pressurization, evaporation under reduced pressure, or the like. The water generated by the dehydration is discharged, and the dehydrated laundry is further crumpled (ironed) by pressing and roll pressing combined with steam heating in the drying unit 25, and moisture is reliably removed, It will be unloaded from the system.

  Waste water discharged from the washing unit 22, the rinse unit 23, the dehydrating unit 24, and the like of the washing mechanism unit 20 is temporarily stored in the water storage tank 33 and then introduced into the water purifier 31. In the water purifier 31, contaminants such as detergent components are removed from the waste water, and purified water is obtained. In this water purifier 31, since the amount of metal soap contained in the waste water is small, clogging of the filter is difficult to occur, and the purification ability can be reliably maintained and the water purification can be performed efficiently.

  The purified water exits the water purifier 31 and reaches the reverse osmosis membrane water purifier 32. Fine contaminants that have not been removed by the water purifier 31 are removed, and the purified water has a cleanliness equivalent to tap water. And the purified water which came out of the reverse osmosis membrane type water purifier 32 merges with a tap water in the cooling water flow path upstream from the condenser 13, and is introduce | transduced into the condenser 13 as cooling water. Thus, the amount of tap water used for cooling water can be reduced because purified water is recirculated as a part of cooling water.

  Further, on the inlet side of the heater 11, the hot water exiting the evaporator 12, the warm cooling water exiting the condenser 13, and the hot water exiting the pure water heat exchanger 14 are combined and supplied to the heater 11. Therefore, the amount of tap water supplied to the heater 11 can be reduced by the amount of recirculation of the hot water.

  Thereafter, while the hot water discharged from each device is recirculated to the inlet side of the heater 11 and the used purified water is recirculated to the inlet side of the condenser 13, the production and heat exchange of pure water and the purification of waste water are performed as described above. Each process such as processing is repeated. As the operation continues, the heater 11 increases the ratio of warm water to be supplied in the supplied water, and the temperature of the supplied water increases, so that the heater 11 is charged to raise the water to a predetermined temperature. The amount of heat can be reduced, and consumption of fuel burned by the heater 11 can be suppressed.

  In addition, of the heat generated by the heater 11, exhaust heat that has not been used for heat exchange with water is recovered by exchanging heat with the working fluid in the evaporator 51 of the exhaust heat recovery power generator 50. In this way, the steam power cycle of the working fluid is activated and power generation output is obtained. The working fluid of the exhaust heat recovery power generation device 50 is condensed into a liquid phase by condensing the gas phase in the condenser 56. However, the cooling water whose temperature has been increased by exchanging heat with the working fluid in the condenser 56 is condensed. It is discharged from the vessel 56 and introduced into the heater 11 together with water from the other, and is heated by the heater 11.

  Thus, in the washing system according to the present embodiment, pure water is generated from the warm water warmed by the heater 11 using the evaporator 12 and the condenser 13, and this pure water can be used for washing. The amount of metal ions contained in the waste water can be extremely reduced, the occurrence of metal soap in the waste water can be suppressed, and the adverse effect of the metal soap on the drain flow path can be prevented. Further, the heat generated in the heater 11 is also used for heating pure water, and the cooling water whose temperature has been increased by heat exchange in the condenser 13 or the hot water remaining without being evaporated in the evaporator 12 is used as the heater. Since it is used as water heated by 11, the heat generated by the heater 11 can be appropriately recovered, and it is not necessary to continuously input a large amount of heat by the heater 11, and energy consumption can be reduced. Further, the waste water can be purified and reused for cooling water, pure water production, and pure water heating, and the amount of water newly replenished from outside can be reduced to reduce water consumption.

  In the laundry system according to the embodiment, tap water from the water supply source 16 which is the coldest water in the system or a mixed water of this and purified water is introduced as it is into the condenser 13 as cooling water. However, the present invention is not limited to this, and a heat exchanger such as a cooling tower or a chiller that lowers the cooling water temperature by exchanging heat between the cooling water and a predetermined cooling medium in advance in the cooling water passage on the front side of the condenser. Etc., and the cooling water is first passed through such a heat exchanger to lower the temperature by heat exchange and then flowed into the condenser 13. The cooling water temperature at the inlet of the condenser 13 can be lowered. Since the temperature difference with the vapor phase water to be condensed is increased, the vapor phase water can be condensed efficiently, increasing the yield of pure water in the condenser, or condensing without changing the pure water yield. Downsizing the vessel Rukoto can.

  Moreover, in the washing system which concerns on the said embodiment, although it is set as the structure which heats the total amount of water for the part which goes to the evaporator 12, and the part which goes to the heat exchanger 14 for pure water with the heater 11, it is not restricted to this. In the situation where pure water is used at a low water temperature or water is not used in the washing mechanism section 20, only the amount of water directed to the evaporator is heated by the heater and obtained by the operation of the evaporator and the condenser. The pure water can be stored only in the pure water tank, and the water can be prevented from flowing into the pure water heat exchanger, and the amount of water heating in the heater can be suppressed, thereby further reducing energy consumption. In addition, while the heated water is not allowed to flow into the pure water heat exchanger, the heat allocated for heating the water that is advanced to the pure water heat exchanger by the heater is transferred to the evaporator. The temperature of the hot water heated to the evaporator can be increased, and the amount of gas-phase water generated by the evaporation in the evaporator can be increased. Therefore, the yield of pure water after condensation obtained by the condenser can be increased, and pure water can be produced efficiently in a short time.

It is a block block diagram of the washing system which concerns on one Embodiment of this invention. It is a schematic explanatory drawing of the washing mechanism part in the washing system concerning one embodiment of the present invention. It is a block block diagram of the waste heat recovery power generation device in the washing system concerning one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing system 10 Pure water supply part 11 Heater 12 Evaporator 13 Condenser 14 Heat exchanger for pure water 15 Ozone water production equipment 15a Ozone generator 16 Water supply source 18 Pure water tank 19 Pump 20 Washing mechanism part 21 Transport mechanism DESCRIPTION OF SYMBOLS 22 Washing part 22a Injection part 22b Ozone water spreading part 23 Rinse part 24 Dehydration part 25 Drying part 30 Water treatment part 31 Water purifier 32 Reverse osmosis membrane type water purifier 33 Water storage tank 50 Waste heat recovery power generation device 51 Evaporator 52 Gas-liquid separation Unit 53 Turbine 54 Generator 55 Absorber 56 Condenser 57 Pump 58 Regenerator 59 Extraction heater

Claims (4)

A transport mechanism that transports the laundry continuously or intermittently, a washing unit that performs a washing process on the laundry that is transported by the transport mechanism, and the laundry that is transported by the transport mechanism after the washing process In a laundry system having at least a rinsing unit that performs a rinsing step and a dehydrating unit that performs a dehydration step on the laundry after the rinsing step,
A heater that heats the supplied water to produce hot water at a predetermined temperature;
An evaporator which is supplied with a part of the hot water obtained by the heater and evaporates the hot water in a reduced pressure space;
A condenser for condensing vapor phase water evaporated in the evaporator by heat exchange with predetermined cooling water to obtain pure water not containing metal ions;
A heat exchanger for pure water that obtains warm pure water by heat-exchanging the remaining warm water not supplied to the evaporator among the water heated by the heater with pure water obtained by the condenser;
A water purifier that obtains purified water by removing contaminants from the waste water generated in the washing section, rinsing section, and dehydrating section, and
A water supply source for supplying fresh water to be at least part of the cooling water,
Pure water that has not been warmed by the warm pure water or the pure water heat exchanger is supplied to the cleaning unit and / or the rinsing unit,
Hot water that has not been completely evaporated in the evaporator and remains in a liquid phase, cooling water that has been heated after the heat exchange in the condenser, and hot water that has been heat-exchanged with pure water in the heat exchanger for pure water , Fresh water supplied from the water supply source is merged as water to be heated and supplied to the heater,
The washing system, wherein the purified water exiting the water purifier is introduced into the condenser as the cooling water together with new water supplied from a water supply source. The laundry system according to claim 1, wherein
A washing system comprising an ozone water producing device that is disposed on the rear side of the heat exchanger for pure water and that produces ozone water by mixing ozone generated by a predetermined ozone generator into pure water. . In the washing system according to claim 1 or 2,
Another heat exchanger for lowering the condenser inlet temperature by cooling the cooling water with another cooling medium is disposed on the upstream side of the cooling water flow path in the condenser. Laundry system. In the washing system according to any one of claims 1 to 3,
The heater heats water by exchanging heat between a predetermined high-temperature heat source and water,
A waste heat recovery power generator is provided that heats the working fluid with the waste heat of the high-temperature heat source after heat exchange with water to operate a steam power cycle of the working fluid and generates power with the power obtained by the cycle. And a laundry system.

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