KR20110139626A - Wasted steam recycling treating system for a laundry - Google Patents

Abstract

PURPOSE: A system for processing recycling waste evaporation for a laundry is provided to prevent the frequent failure according to the use of a lamp. CONSTITUTION: In a stream withdrawal pipe(3), a first check valve(31) is installed. In a pressure tank(4), a second water level sensor(41) is installed. A three-way value(62) is installed on the path of an exhaust pipe(61). In a water supply pipe(7), a third opening and closing valve(71) is installed. The water supply pipe supplies the water to the pressure tank.

Description

Waste steam recycling system for laundry {WASTED STEAM RECYCLING TREATING SYSTEM FOR A LAUNDRY}

The present invention relates to a laundry waste steam recycling system for recycling the waste steam passing through the washing machine after supplying steam for the washing machine by installing in the laundry, and more specifically, except for a pump used for the transfer of hot water. Waste steam for laundry that prevents frequent breakdown, cost, and odors caused by the use of the pump, while preheating the cold water supplied to the steam boiler to prevent the interruption of steam supply due to the supply of cold water. A recycling processing system.

Generally, the waste steam recycling system for a laundry is installed in a laundry, and supplies steam for washing, ironing, and drying to a washing machine such as an iron, a dryer, and a press installed in the laundry and used for washing, ironing, and drying various kinds of clothes. In addition, it is a system that saves energy by recovering waste steam that has passed through the washing machine.

As a prior art of such a waste steam recycling system for laundry, there is a Republic of Korea Patent Publication No. 2007-0096667 "Waste Steam Recycling System in an Automatic Steam Iron Boiler" (2007.10.02), as shown in FIG. The configuration and the operation relationship are as follows.

The conventional waste steam recycling system includes a steam boiler 40 in which an electric heater 50 and a water level detector 44 are installed, the steam boiler 40, an iron 10, a dryer 60a, and a press 60b. Steam supply pipe 12 connected between the washing machine such as), the steam recovery pipe (90) connected to the washing machine, and the steam recovery tank having a water level detector (68) connected to the steam recovery pipe (90) 110, a hot water transfer pipe 100 connected between the steam recovery tank 110 and the steam boiler 40, a pump 76 installed on the conduit of the hot water transfer pipe 100, and the steam It includes a drain pipe 38 connected to the boiler 40 and having a drain pump 36 on the conduit, and a storage tank 30 connected to the drain pipe 38.

The conventional waste steam recycling system configured as described above generates steam while the water contained therein is evaporated by the electric heater 50 of the steam boiler 40, and the generated steam is supplied to the washing machine through the steam supply pipe 12. After being introduced and used for washing, drying and ironing the laundry, the hot condensate and steam passing through the washing machine are recovered to the steam recovery tank 110 through the steam recovery pipe 90.

The hot water recovered in the steam recovery tank 110 is collected to a predetermined level and then recycled by being introduced into the steam boiler 40 through the hot water transfer pipe 100 by the operation of the pump 76.

In addition, when the water is insufficient by the water level detector 44, the steam boiler 40 receives the water stored in the water storage tank 30 through the drain pipe 38 by the operation of the drain pump 36.

However, a pump used to supply hot water recovered to a conventional steam recovery tank to a steam boiler uses a general electric motor pump. Since the conventional pump transfers water at high temperature and high pressure, the pump The impeller wears easily, the inner wall of the pump is easily corroded, the sealing part of the pump is easily damaged by high temperature water, and the damage and abrasion are progressed rapidly, and thus the frequent failure of the pump and the frequent occurrence of the pump itself. Due to the replacement, the conventional system is very difficult to use and has a lot of additional costs.

In addition, foreign substances generated as the pump is worn or damaged by the hot water is supplied to the steam boiler together with the hot water, and the hot water thus supplied is generated by the steam boiler as steam and supplied to the washing machine so that the foreign matter is in the steam. There was a problem that can not be used in the laundry to be kept bad smell caused by.

In addition, the conventional steam recovery tank has a problem that does not endure high temperature and high pressure easily damaged or there is a risk of explosion.

In addition, when the water level of the steam boiler is lowered, as the low temperature water is directly supplied to the steam boiler from the water storage tank, when the low temperature water is supplied, the water temperature inside the steam boiler drops sharply to generate steam. It takes a long time to stop and during this time there was a problem that the supply of steam is interrupted.

In addition, during the continuous circulation of steam or hot water along the closed circulation path connecting the steam boiler, the washing machine, and the steam recovery tank with pipes, scales (such as rust or scale due to pipe corrosion) or water storage tanks may be used. As a large amount of scale mixed in tap water introduced through the gas flows into the steam boiler, hot water stored in the steam boiler rapidly decays by the scale, causing odor or damaging internal components such as an electric heater. there was.

Republic of Korea Patent Publication No. 2007-0096667 "Waste steam recycling system in an automatic steam iron boiler" (2007.10.02)

Accordingly, the present invention has been made to solve the conventional problems as described above, the purpose of which is that the frequent use of the pump, except the pump used for the transfer of hot water, the occurrence of costs and the occurrence of odor While preheating the cold water supplied to the steam boiler quickly while preventing it from being prevented, the supply of low temperature water can be prevented from being interrupted smoothly. The pressure vessel can be used to recycle waste steam for laundry that eliminates the risk of explosion caused by high temperature and high pressure. To provide a processing system.

In addition, another object of the present invention is to remove the scale accumulated in the steam boiler to provide a waste steam recycling treatment system for laundry to minimize the generation of odor of the steam supplied to the washing machine and damage to the components by the scale.

In order to achieve the above object, the waste steam recycling treatment system for a laundry according to the present invention includes a steam boiler in which an electric heater and a first water level sensor are installed; A steam supply pipe connected between the steam boiler and the washing machine and having a first opening / closing valve installed on the pipeline; A steam recovery pipe connected to the washing machine and having a first check valve installed on a pipe line; A pressure tank connected to an end of the steam recovery pipe, having a second water level sensor installed therein, and a pressure vessel configured to collect steam passing through the washing machine; A high temperature water transfer pipe connected between the pressure tank and the steam boiler and provided with a second on / off valve and a second check valve on a pipeline; An exhaust pipe connected to the upper side of the pressure tank and discharging the air inside the pressure tank to the outside, a three-way valve installed on a conduit of the exhaust pipe, and connected to the three-way valve to open and close the three-way valve Including the air supply pipe for injecting air into the pressure tank and the air compressor installed in the end of the air supply pipe to transfer the hot water stored in the pressure tank to the steam boiler in accordance with the supply and discharge of air An air supply and exhaust unit; A water supply pipe connected to one side of the pressure tank, and having a third open / close valve installed on the conduit, for supplying water into the pressure tank; A preheating pipe having one end connected to the steam recovery pipe inside the pressure tank, provided in a spiral structure from the bottom to the top, and the other end provided toward an inner upper surface of the pressure tank; A water supply tank connected to an end of the water supply pipe, a water supply pump is installed on a pipe of the water supply pipe, a water supply breaker is installed inside, and a water supply pipe connected to one side corresponding to the water supply breaker; It is characterized by including.

The steam boiler may further include a scale discharge pipe connected to a lower portion of the steam boiler and having a fourth open / close valve installed on the pipeline.

The present invention as described above, except for the pump used for the transfer of hot water, frequent failures, costs and odors caused by the use of the pump can be prevented smoothly, and the low-temperature water supplied to the steam boiler is quickly preheated The interruption of the steam supply by the supply of water is also smoothly prevented, and the use of pressure vessels has the effect of eliminating the risk of explosion by high temperature and high pressure.

In addition, the present invention has the effect that the scale stacked on the inside of the steam boiler is easily removed to minimize the generation of odor of the steam and damage to the components by the scale.

1 is a block diagram showing a waste steam recycling processing system according to the present invention,
2 is an enlarged view illustrating main parts of FIG. 1;
3 is a block diagram showing a conventional system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a waste steam recycling system according to the present invention, Figure 2 is an enlarged view of the main part of FIG.

1 and 2, the waste steam recycling treatment system for a laundry according to the present invention includes a steam boiler 1 and a steam supply pipe 2 connected between the steam boiler 1 and a washing machine A. ), A steam recovery pipe (3) connected to the washing machine (A), a pressure tank (4) connected to the steam recovery pipe (3), the pressure tank (4) and the steam boiler (1) A high temperature water transfer pipe 5 connected therebetween, an air supply / exhaust unit 6 installed in the pressure tank 4, a water supply pipe 7 connected to the pressure tank 4, and the pressure tank 4 It includes a preheating pipe (8) installed in the interior and the water supply tank (9) installed in the water supply pipe (7).

The steam boiler 1 has an electric heater 11 and a first water level sensor 12 embedded therein, and serves to generate steam by heating water contained therein by the operation of the electric heater 11. The first water level sensor 12 detects a high level and a low level of water contained in the steam boiler 1 so that a known controller installed in the system can recognize when to supply water to the steam boiler 1. will be.

The steam boiler 1 further includes a scale discharge pipe 13 connected to the lower portion of the steam boiler 1 and having a fourth open / close valve 14 installed on the pipeline. The scale discharge pipe 13 allows the scale stacked in the steam boiler 1 to be easily discharged by the user's operation. The fourth on-off valve 14 is to open and close the scale discharge pipe 13 by the user's manual operation during the discharge of the scale.

The steam supply pipe (2) is connected between the steam boiler (1) and the washing machine (A), the first opening and closing valve 21 is installed on the conduit, the steam generated by the steam boiler (1) It serves as a passage for supplying the washing machine A such as an iron, a dryer and a press. The first on-off valve 21 is operated in a state controlled by a known controller to serve to open or close the steam supply pipe (2).

That is, when the steam is generated in the steam boiler 1 and rises to a predetermined temperature, the first opening / closing valve 21 is controlled by a controller and switched to the open state in the closed state, thereby allowing the steam supply pipe 2 to operate. It is to be able to supply steam to the washing machine (A).

The steam recovery pipe (3) is connected to the washing machine (A), the first check valve 31 is installed on the conduit, the steam passing through the washing machine (A) and the washing machine (A) It serves to provide a passage through which the steam and hot water moves to recover the hot water condensed while passing through the pressure tank (4). The first check valve 31 serves to prevent backflow of steam and hot water passing through the steam recovery pipe 3.

The pressure tank (4) is connected to the end of the steam recovery pipe (3), the second water level sensor 41 is installed, consisting of a pressure vessel that withstands high temperature and high pressure, and passes through the washing machine (A) It serves to collect and recover the steam moved to the steam recovery pipe (3). The second level sensor 41 detects the high and low levels of the hot water recovered and stored in the pressure tank 4 so that a known controller can recognize the information on the level.

The high temperature water transfer pipe (5) is connected between the pressure tank (4) and the steam boiler (1), the second on-off valve 51 and the second check valve 52 is installed on the pipeline, the pressure It serves as a passage for transferring the hot water formed by condensation of the steam recovered in the tank 4 to the steam boiler (1). The second on-off valve 51 performs an operation of opening or closing the high temperature water transfer pipe 5 under control by a known controller. The second check valve 52 serves to prevent the hot water flowing through the hot water transfer pipe 5 from flowing back.

The air supply / exhaust unit 6 injects air into the pressure tank 4 to discharge the stored hot water or discharges the air inside the pressure tank 4 to pass the pressure of the steam and the hot water through the washing machine A. It is to smoothly flow into the tank (4). That is, the air supply / exhaust part 6 injects or discharges air into the pressure tank 4 to transfer the stored hot water to the steam boiler 1 or to collect the hot water passed through the washing machine A. Do it.

The air supply / exhaust part 6 which serves as described above is connected to an upper side of the pressure tank 4 and an exhaust pipe 61 for discharging air inside the pressure tank 4 to the outside and the exhaust pipe 61. The three-way valve 62 is installed on the conduit and the three-way valve 62 is connected to the air supply to the air into the pressure tank (4) by the opening and closing operation of the three-way valve 62 An engine 63 and an air compressor 64 provided at the end of the air supply pipe 63 are included.

When the high temperature water is collected by the pressure tank 4, the three-way valve 62 closes the air supply pipe 63 while opening the exhaust pipe 61 to discharge the air inside the pressure tank 4 to the outside. Therefore, the steam and hot water passing through the washing machine A through the steam recovery pipe 3 are introduced into the pressure tank 4.

In addition, when the high temperature water stored in the pressure tank (4) to the steam boiler (1), the three-way valve 62 closes the exhaust pipe (61) while opening the air supply pipe (63) after the air compressor Compressed air generated by the operation of the (64) is introduced into the pressure tank (4) through the air supply pipe (63), and the hot water stored in the pressure tank (4) by the inflow of such external air While being pushed by air pressure, it is transferred to the steam boiler 1 through the hot water transfer pipe 5.

The water supply pipe 7 is connected to one side of the pressure tank 4, the third opening and closing valve 71 is installed on the conduit, and serves to supply water into the pressure tank (4). . That is, the water supply pipe (7) is installed in the pressure tank (4) so that the water at room temperature or low temperature is supplied directly connected to the tap water, etc. can be preheated in the pressure tank (4), thereby low temperature in the steam boiler (1) This prevents the supply of water directly, thereby preventing the delay of steam generation by the direct supply of low temperature water. The third on-off valve 71 is opened and closed by a known controller and serves to supply water to the pressure tank 4 through the water supply pipe 7 or to block the supply thereof.

The preheating pipe (8) has one end connected to the steam recovery pipe (3) inside the pressure tank (4), has a spiral structure from the bottom to the top, and the other end of the inner upper surface of the pressure tank (4). It is provided toward, and serves to preheat the water supplied to the pressure tank (4) through the water supply pipe (7).

That is, the preheating pipe (8) is a spiral structure in the water received in the pressure tank and steam and hot water flowing into the pressure tank (4) by the steam recovery pipe (3) through the washing machine (A) By preheating the cold water supplied to the pressure tank (4) by the water supply pipe (7), it serves to smoothly prevent the low temperature water is supplied directly to the steam boiler (1).

The water supply tank 9 is connected to the end of the water supply pipe (7), the water supply pump 91 is installed on the pipeline of the water supply pipe (7), the water supply circuit breaker 92 is installed inside In response to the water circuit breaker 92, the water supply pipe 93 is connected to one side.

The water supply tank 9 stores water at a predetermined level by the water supply circuit breaker 92 in a state connected directly to the water supply via the water supply pipe 93, and the third on-off valve 71 by a known controller. By the operation of opening and the operation of the water supply pump 91 is to allow the water stored in the water supply tank (9) is automatically supplied to the interior of the pressure tank (4) through the water supply pipe (7).

The water circuit breaker 92 opens the water supply pipe 93 when the water level of the water supply tank 9 drops, and fills the water in the water supply tank 9, and automatically supplies the water supply pipe 93 when the water level becomes constant. It is a known thing to close.

The operation process of the present waste steam recycling treatment system configured as described above is as follows.

Steam and high temperature water (about 90 ° C.) passing through the washer A after the high pressure steam (about 140 ° C.) generated from the steam boiler 1 is supplied to the washer A through the steam supply pipe 2. ˜95 ° C.) is stored inside the pressure tank 4 through the steam recovery pipe 3.

In this state, when the amount of the hot water stored in the steam boiler 1 is reduced to a predetermined amount or less, the first water level sensor 12 detects this and inputs water level information to a known controller. The air compressor 64 is operated while the three-way valve 62 is operated to open the air supply pipe 63 to inject compressed air into the pressure tank 4 through the air supply pipe 63.

At this time, the controller is also operated to open the second on-off valve 51 installed in the high temperature water transfer pipe (5), and thus compressed air is injected into the pressure tank (4) stored in the pressure tank (4) The hot water is introduced by the compressed air into the steam boiler (1) through the hot water transfer pipe (5).

As the hot water is recovered to the steam boiler 1 through the hot water transfer pipe 5 as described above, a part of the heat source necessary for generating steam by the electric heater 11 is transferred to the hot water introduced from the pressure tank 4. The included heat may be reused to generate hot steam (140 to 150 ° C.).

As the hot water stored in the pressure tank 4 is introduced into the steam boiler 1 in the same manner as described above, when a predetermined amount or more of the hot water is stored in the steam boiler 1, the first water level sensor ( 12 detects this and operates the three-way valve 62 to open the exhaust pipe 61 to the atmosphere, thereby discharging the air of high pressure inside the pressure tank 4 to discharge the atmosphere into the interior of the pressure tank 4. The pressure is lowered to the atmospheric pressure level, and the high pressure steam and the high temperature water discharged from the washing machine A are continuously introduced into the pressure tank 4 naturally.

In addition, when the high temperature water stored in the pressure tank 4 is introduced into the steam boiler 1 so that the amount of the high temperature water stored in the pressure tank 4 is reduced to a predetermined amount or less, it is installed in the pressure tank 4. The second water level sensor 41 detects this and opens a third opening / closing valve 71 in a state in which hot water is continuously introduced from the washing machine A to receive a predetermined amount of water through the water supply pipe 7. It is supplied to the pressure tank (4).

At this time, while the steam and hot water flows into the preheating pipe (8) to preheat the low-temperature or room temperature water introduced into the pressure tank (4) through the water supply pipe (7), such steam generation, steam supply, steam Through a series of processes consisting of recovery, water supply and preheating, and hot water supply, the waste steam recycling system according to the present invention is continuously operated.

Although preferred embodiments of the present invention have been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

1: steam boiler
11: electric heater 12: first level sensor
13: scale discharge pipe 14: fourth on-off valve
2: steam supply pipe
21: first opening and closing valve
3: steam recovery pipe
31: first check valve
4: pressure tank
41: second level sensor
5: high temperature water transfer pipe
51: second on-off valve 52: second check valve
6: air supply and exhaust
61 exhaust pipe 62 three-way valve
63: supply pipe 64: air compressor
7: water supply pipe
71: third on-off valve
8: Preheating piping
9: water supply tank
91: water supply pump 92: water supply circuit breaker
93: water supply pipe

Claims (2)

A steam boiler 1 in which the electric heater 11 and the first water level sensor 12 are installed;
A steam supply pipe (2) connected between the steam boiler (1) and the washing machine (A), and having a first opening / closing valve (21) installed on the conduit;
A steam recovery pipe 3 connected to the washing machine A and having a first check valve 31 installed on the pipeline;
A pressure tank (4) connected to the end of the steam recovery pipe (3), having a second water level sensor (41) installed therein, and a pressure vessel for collecting steam passing through the washing machine (A);
A high temperature water transfer pipe 5 connected between the pressure tank 4 and the steam boiler 1 and having a second on-off valve 51 and a second check valve 52 installed on the pipeline;
An exhaust pipe 61 connected to an upper side of the pressure tank 4 and discharging air in the pressure tank 4 to the outside; and a three-way valve 62 installed on a pipe of the exhaust pipe 61; A supply pipe 63 connected to the three-way valve 62 and injecting air into the pressure tank 4 by opening and closing the three-way valve 62; An air supply / exhaust unit (6) including an air compressor (64) installed at an end to transfer the hot water stored in the pressure tank (4) to the steam boiler (1) according to the supply and discharge of air;
A water supply pipe (7) connected to one side of the pressure tank (4), having a third open / close valve (71) installed on the conduit, and supplying water into the pressure tank (4);
One end is connected to the steam recovery pipe (3) to the inside of the pressure tank (4), the preheating pipe is provided in a spiral structure from the bottom to the top, the other end is provided toward the inner upper surface of the pressure tank (4) 8);
It is connected to the end of the water supply pipe (7), the water supply pump 91 is installed on the pipeline of the water supply pipe (7), the water supply circuit breaker 92 is installed therein, the water supply circuit breaker (92) Corresponding to the water supply tank 9 is connected to the water supply pipe 93 on one side;
Waste steam recycling treatment system for a laundry comprising a. The method of claim 1,
The steam boiler (1),
The scale discharge pipe 13 is connected to the lower portion of the steam boiler 1 and the fourth open / close valve 14 is installed on the pipeline.
Waste steam recycling processing system for a laundry, characterized in that it further comprises.

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