KR20150116217A - Electric vehicle injection system - Google Patents

Abstract

The present invention relates to a spray system mounted on an electric rail car and, more specifically, to a spray system capable of remarkably improving air quality in a tunnel by mounting a spray system in a non-powered car (T car) while forming a common electric rail car and a new electric rail car, spraying water while the electric rail car drives on a permanent basis, collecting fine dust generated during the driving of the rail car and contaminants floating in the tunnel of a subway, and making the fine dust sink on a road. The spray system of the electric rail car is operated in real time and cools the temperature of a rail by automatically intensively spraying water onto the surface of the rail by sensing the temperature of the surroundings of a ground railroad rail. The present invention prevents an accident that a train derails since the rail floats upwards and is bent to the side, so the present invention can be applied to a subway, a wide area railroad, an industrial rail, and a high-speed railroad. Various water supply devices can be formed to efficiently operate the spray system for the electric rail car, and a Y-railroad among the subway line and a last train station line is installed. Therefore, all organized trains on the rain receives water by using a standby time after converting the upper line and the lower line in order. Thereby, the spray system can improve efficiency of the spray system at low costs in a subway corporation.

Description

Electric Vehicle Injection System {omitted}

The present invention relates to an injection system mounted on a train,

More specifically, a jet system is mounted on a non-powered vehicle (T car) while a commercial electric train or a new electric train is being prepared, and the electric train carries passengers during business hours, and is floated on the roads and adjacent spaces due to the strong wind The present invention relates to an injection system capable of improving the air quality in a tunnel by adsorbing (collecting) fine dust and sinking into the road, because the harmful substances and fine dusts are sprayed against the heat wind before spreading to the tunnel space.

As the ground transportation becomes complicated, the subway is an important means of transportation that is common in large cities due to the convenience of accurate driving time compared to other modes of transportation, It is difficult to manage the air quality. Especially, in the case of the tunnel, the contamination degree of the fine dust is more severe than the outside air.

In order to solve the above problems, the railway operators and the government have been working on improving the ventilation facilities of the history, improvement of the trajectory concrete improvement, ventilation duct cleaning, screen door installation, high pressure sprinkler operation, Various methods such as installation of water cleaning (cleaning) piping between history and history have been implemented, but they have not achieved satisfactory results because of deep location and lack of air flow.

In order to prevent the fine dust in the tunnel from flowing into the platform by blocking the underground tunnels and platform from the improvement measures, a screen door is installed and operated on the platform. However, since the screen door is installed, The air pollution degree inside the tunnel becomes rather high, so that it is sucked into the railway train carriage according to the property of the dust flowing from the high concentration place to the low place, or is sucked into the historical landing place by the piston phenomenon, (Citizen) 's health.

In order to improve the air quality in the tunnel, various types of sprinkling equipment have been developed. However, since subway trains are operated at regular intervals, technically advanced sprinkler equipment can not enter the main railway line.

In other words, since spraying operation is inevitable at the stopping time of the subway, the working time and work interval are inevitably limited.

In order to solve the above-mentioned problem, the present applicant's application for registration of the pre-registration application 2010-0111029 titled " electric vehicle overhead spraying device "

In order to efficiently operate the injection device, a water supply device is installed. The technology of the present invention is installed in the Y line of the lead line of the operating line of the subway operating agency and the terminating station, : 48 train) After the train has completed the one-way train, the train is switched to the line, and it is put on the Y-line, waiting for the departure (direction of the train), and it is possible to supply the water using waiting time. Therefore, The efficiency of the injection system will be doubled,

Further, since the injection unit of the injection system is provided inside the water supply tank, the water supply tank enclosure is made compact, and the injection nozzle is connected to the injection unit from the outside of the water supply tank vertically to the lower side of the water supply tank, It is possible to increase the fine dust adsorption efficiency because the injection is carried out against the strong heat wind (irrespective of the up and down direction).

In addition, the water tank enclosure is coated with a heat insulating material to maintain the insulation (insulation).

Also, during the daytime when the sunshine amount is highest, the summer heat island phenomenon is deepened due to various obstacles such as soundproof walls and radiant heat, and the rail temperature suddenly rises. When the rail is not cooled, There is a possibility that a derailment of the train may occur due to the occurrence of the accident. In order to cool the above-mentioned ground line, the water is sprayed by using a portable water supply tank,

It is required to develop a technology capable of replacing the primitive spraying method and a technology capable of improving the comfort of the underground air quality experienced by passengers (citizens) by spraying at the time when citizens use the subway.

In order to improve the underground tunnel air quality as described above, a high-pressure water cleaning vehicle is introduced and operated. However, the passengers can not put sprinkler equipment on the main line due to the short dispatch time (2 to 6 minutes) In addition, according to the time limit of use, after shutting off the subway line after business hours, it is necessary to move to the area where cleaning is necessary and clean the water. Therefore, the daily working time is about 2 hours excluding the entry to the main line and withdrawal time. Since the work area is 6 to 7 km long,

The working distance compared to the line extension of the corresponding route of the operating agency of the city rail is remarkably insufficient.

Also, during the hot summer season, there is a risk of accidental raising of the rail due to radiant heat and sound barrier due to the sudden increase in the temperature around the rail. Therefore, the railway operator should use the manpower to strengthen the track inspection, In this time, water is sprayed on the rail.

The water spraying means uses a portable water supply tank or a Honica water spraying tank for the priming water spraying operation against the unstable working conditions and the risk of a collision accident due to the supply of cooling water for each work section.

In addition, the railway operator has invested a lot of budget to install the sprinkling (clean) piping in the main tunnel between basements, and sprinkle water on the bottom of the tunnel after business hours. However, Amount of tap water is being consumed.

In order to solve the above problems, there has been developed a technology that enables passengers to spray water on the underground tunnel in real time at the time of using the subway,

If the temperature around the rail suddenly rises to the ground due to the summer heat wave, etc.,

There are techniques for noise reduction measures that are installed or operated on the side of rails by installing undersea noise in the multi-grade curved sections due to railway wheels and rail friction,

After business hours, water is sprinkled to the tunnel floor through the cleaning pipe installed on the main tunnel line of the underground tunnel, but the technology that can effectively use tap water, which is a precious energy,

There is a demand for the emergence of a technique for installing a desirable water supply device (Y line) for efficient operation of a train injection system which is a technique of the present invention.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of mounting a spray system on a lower portion of a non-powered vehicle (T car) And sprayed in a spray form through a plurality of spray nozzles coupled to the spray unit.

Further, the injection system of the present invention is mounted on a non-powered vehicle (T car) during knitting of a train, and is preferably configured such that the train can be sprayed automatically (no crew operation is required) Therefore, the air quality in the subway tunnel can be effectively improved because it can be sprayed anytime and anywhere if the water supply is continuously supplied to the water supply tank without restriction of time and space.

In addition, since the spraying is performed in the form of a spray, the spray particles are fine, and the fine dust and harmful factors floating in the air are adsorbed and settled on the road, so that the air quality of the subway tunnel is improved, The present invention provides an eco-friendly electric rail vehicle injection system capable of improving the satisfaction of the passengers (citizen) by improving the air condition of the subway tunnel in summer by the cooling effect by the heat of vaporization by finely spraying the structure .

Also, during the hot summer season, there is a risk of accidental raising of the rail due to radiant heat and sound barrier due to the sudden increase in the temperature around the rail. Therefore, the railway operator should use the manpower to strengthen the track inspection, In this time, water is sprayed on the rail.

The water spraying means uses a portable water supply tank or a Honica water spray tank because there is a limit in providing a facility for supplying cooling water to each work site, but the water spraying work is being carried out in an unstable working condition ,

The electric rail vehicle injection system, which is a technique of the present invention, operates in real time and senses the ambient temperature of the rail by the ground line. When the temperature is higher than the set temperature, the injection surface of the rail is directly injected from the injection nozzle of the rail- It is possible to prevent an accident that a rail derailed due to a raising of a rail or a sideways extension of a railway, Wide railway line, industrial line, and high-speed railway line.

In addition, the railway operator has invested a lot of budget to install sprinkling pipes between underground history and sprinkled water on the bottom of the tunnel after business hours. However, And passengers (citizens) can not feel the improvement of air quality in real time by conducting watering after business hours,

The train injection system, which is a technique of the present invention, allows passengers (citizens) to carry passengers (citizens) at the time of using an urban subway and continuously injects the air, thus realizing the effect of improving the tunnel air quality,

In addition, this technology injects against the strong wind generated between the lower part of the railway car and the road. Therefore, it reduces the vicious circle problem that the fine dust and harmful substances spread to the tunnel space due to the existing train wind, Effect can be obtained,

In addition, since the injection angle of the nozzles and the injection angle of the lower cross section space of the lower portion of the railway car are overlapped with each other through a certain injection angle of the nozzles and the nozzles at the lower part of the injection system, the injection efficiency is increased toward the fine dust diffused by the heat wind at a certain pressure. And tap water can be effectively used to improve the air quality in the tunnel.

In order to effectively operate the electric rail vehicle injection system of the present invention, it is possible to configure various water supply devices. More preferably, the water line can be constructed at the time of the subway operation line and the Y line of the terminal line (for example, Seoul Metro Line 3, (Seoul Metropolitan Subway Line 3: 48 lines) are completed one after the other in order to switch to the upper and lower lines, and then the Y It is possible to increase the efficiency of the injection system at a low cost in a railway operating agency because it receives water supply by using waiting time.

In addition, in order to increase the adsorption efficiency of the injection system mounted on the train, which is the present technology, the injection angle of the injection nozzle can be adjusted through the ball joint via the ball joint between the injection unit and the injection nozzle to be provided in the injection system Loses.

In addition, a plurality of water supply ports are formed on one side of a door of a non-powered vehicle (T car) equipped with a jetting system for receiving water supply from the water supply device, and when a sudden stop or an unexpected situation occurs during operation of the electric vehicle, A plurality of diaphragms are formed in order to minimize a phenomenon in which the water in the tank is diverted to the front, rear, left, and right sides of the tank, so that the injection system can stably inject the fuel, thereby improving the air quality in the underground tunnel. have.

The present invention can be configured to automatically spray the subway tunnel (floor) while the train is transporting the passengers, so that the injection system can be operated anytime and anywhere without any restriction of time and space, so that the air quality in the subway tunnel The goal is to improve dramatically.

In addition, the injection system mounted on the train of this technology operates in real time and it is configured to detect the ambient temperature of the rail by the ground line (sensor) and automatically cool the rail temperature by concentrating the surface of the rail, It is possible to prevent accidents caused by derailment of train due to sideways curvature, and it can be applied to wide area railway line, industrial line, high speed railway line as well as urban subway.

Further, in order to effectively operate the electric rail vehicle injection system of the present invention, it is possible to configure various water supply devices, and more preferably, it is installed as a Y line among the subway station and the terminal stations, Since the water supply is carried out using the waiting time after the conversion, the efficiency of the injection system can be doubled by the railway operating organization at low cost

In addition, the urban railway operator installs sprinkling pipes on the sides of the multi-grade curved section rail where under-noise occurs due to the railway wheels and rail friction, or the railway spraying system, which is a technique of the present invention, And,

In addition, the technology of the present invention improves the air quality of the subway tunnel because the fine particles of the injection are fine and adsorbs the fine dust and harmful factors floating in the air and precipitates into the surface of the road. In addition, the heat of the tunnel structure is accumulated The present invention also provides an eco-friendly electric rail vehicle injection system capable of improving the satisfaction of the passengers (citizens) by improving the air condition of the subway tunnel in summer by the cooling effect by the heat of vaporization due to fine spraying.

1 is a front view of a general non-powered vehicle (T car) during knitting of a train.
2 is a front view of a state in which a general electric motor vehicle injection system according to the present invention is mounted on a general non-powered vehicle (T car) during knitting of a train.
3 is an internal perspective view of an injection system in accordance with the present invention.
FIG. 4 is a perspective view of the injection unit installed inside the injection system according to the present invention. FIG.
5 is a perspective view of the injection system according to the present invention.
Figure 6 is a perspective view of a water supply installation for the preferred implementation of the injection system according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a front view of a general non-powered vehicle (T car) during knitting of a train.

As shown in the drawing, the lower portion of the non-powered vehicle (T car) during the formation of the train 100 has no power unit or inverter unit, and a sufficient space is secured in the lower portion of the vehicle for mounting the electric vehicle injection system, which is a technique of the present invention.

2 is a front view of a general non-powered vehicle (T car) during knitting of a train, in which the injection system 120 according to the present invention is mounted.

As shown in the drawing, the injection system 120 according to the present invention can be mounted on the lower portion of a non-powered vehicle (T car) having a free space during the knitting of the train 100, The injection system 120 is mounted.

When the train 100 organization of the city railway operating organization is composed of 10 units, it is organized into 5M 5T or 6M 4T.

In this case, M represents a power vehicle and T represents a non-powered vehicle (subordinate). The injection system of the present invention is variously configured in 5T 5T (5th) and 6M 4T to 4T (4th) Respectively.

3 is an internal perspective view (1) of an injection system 120 in accordance with the present invention.

A water supply port 230 is formed in a side surface of the injection system 120. A water supply port cover is provided in the water supply port 230. When the water supply tank 130 is supplied with a high- A hollow portion is formed from the center of the close contact surface which is in close contact with the water supply port 230 to the downward protruding end so that the inside of the water supply tank 130 is maintained at atmospheric pressure.

The water supply port 240 formed in the upper part of the injection system 120 is connected to the water supply port 250 formed at one side of the door of the non-powered vehicle (T car) equipped with the injection system 120 and connected to the hollow pipe, A plurality of indicator lamps 220 are provided inside the bulb 250 so that the low capacity of the water supply tank can be displayed. The signal lamp cable of the bulb 250 is sealed with water, And to be connected to the control box.

The water supply port 250 is formed in a box shape, and a water supply port 250 and a plurality of display lamps 220 are provided therein.

In order to minimize a phenomenon in which the storage water in the water supply tank 130 is tilted back and forth when the sudden or sudden situation occurs during operation of the electric vehicle 100 in the water supply tank 130, A diaphragm 160 is formed perpendicularly to the longitudinal direction, and the diaphragm 160 is formed so as to facilitate the movement of air and water by puncturing a plurality of portions.

A water discharge window 360 is provided at the center of the bottom of the water supply tank 130 and a water level window 210 is provided at one side of the water supply tank 130.

4 is a perspective view of a spraying unit installed inside the spraying system according to the present invention

The water supply tank 130 is provided with a subway tunnel injection unit 330 and a tunnel side injection unit 340,

In addition, the injection unit 350 for performing an intensive injection into a quadrangular section where the rail surface, the railway wheel and the rail are frictioned by the ground line is welded to the bottom surface of the water supply tank, and the injection nozzle 280 is connected to the water supply tank (330, 340, 350) in the water supply tank (130) from the outer surface of the water supply tank (130).

Since the jetting units 330, 340 and 350 are provided in the water supply tank 130, the jetting units 330, 340 and 350 are not required to be kept warm. Accordingly, the jetting system 120 is simple and compact .

More preferably, since the spray units 330, 340 and 350 are provided in the water supply tank 130, a warming effect can be obtained up to the spray nozzles 280, thereby doubling the efficiency of the train spray system of the present invention.

The injection units 330 and 340 are provided on the bottom and side surfaces of the water supply tank 130 and the injection nozzles 280 are vertically coupled to the outside of the water supply tank 130, ) The micro-dust is injected at a certain pressure toward the heat wind which is generated strongly between the bogies, so that the fine dust is effectively absorbed and settled on the road so that the air quality of the underground tunnel is improved.

5 is a perspective view of the injection system according to the present invention.

The injection system 120 is provided with a water supply tank 130 for storing water, a pressure unit 150 for supplying water by pressing the water, and a control panel 170 for controlling the pressure unit 150 by receiving a plurality of sensor signals When the injection condition is satisfied by the control panel 170, the automatic valves 260 and 270 are opened and the pressurizing means 150 is started, so that the pressure water is supplied to the injection nozzle 280 and sprayed in a spray form.

The pressurizing means 150 uses a high-low-pressure pump and a mist pump to increase the adsorption efficiency of fine dust and dust against the heat flow generated between the underground tunnel, the lower portion of the railway car, and the side wall of the tunnel structure The optimum injection system 120 is constructed.

A check valve 300, a strainer 290 and a drain valve 310 are formed in the suction side piping, and a pressure control valve 320, automatic valves 260 and 270, and injection units 330, 340 and 350 are coupled .

The injection condition for operating the injection system 120 in the urban subway tunnel is determined by the operation of a sensor (not shown) for detecting the start of the train 100 and a sensor (not shown) for detecting the underground tunnel structure, When the injection condition is satisfied, the automatic valve 260 is opened and the pressurizing means 150 is started. Therefore, the pressure water is supplied to the underground tunnel through the injection nozzle 280 and the tunnel amount Side.

At this time, the level sensor 190 provides a level status signal of the water supply tank 130 to a control unit (not shown) formed in the control panel 170, and a control unit (not shown) If it is above the low water level point, some of the injection conditions for operating the injection system 120 will be met.

Even when the injection system 120 is operating under the above-described injection condition, when the water level of the water in the water supply tank 130 falls below the low water level point of the level sensor 190, or when a train stops in the history of the subway station, When the electric motor vehicle is stopped, the control panel 170 cuts off the power supply of the automatic valve 260 and the pressure means 150, and the operation of the injection system 120 is stopped.

In another preferred embodiment of the present invention, the spraying condition for operating the injection system 120 in the hot, summer summertime ground line is such that the rail detected by the temperature sensor (not shown) When the ambient temperature is equal to or higher than the set temperature and the level sensed by the level sensor 190 is maintained at a level higher than the low water level point. When the injection condition is satisfied, the automatic valve 270 is opened and the pressurizing means 150 is started Thereby concentrating the surface of the rail.

If the water level of the water for storing water in the water supply tank 130 is lower than the low water level of the level sensor 190 and the temperature sensor 200 does not operate even if the injection system 120 is operated by the above injection condition, The electric power of the automatic valve 270 and the pressure means 150 is cut off and the operation of the injection system 120 is stopped.

In addition, as another preferred embodiment of the electric rail vehicle injection system 120 according to the present invention, noise is generated as the railway wheels and the rails are rubbed in a quadrature section of an urban railroad and a wide railroad railroad. Watering pipes are installed to spray water on the rails. However, it is not easy to secure watering water and water spraying equipments in each of the above mentioned curved sections.

However, since the injection system of the present invention carries passengers and the target injection can be performed in a quadrature section, it is possible to replace the water spray pipe.

When the target position is detected by a position sensor (not shown) and the water level of the storage water sensed by the level sensor 190 is maintained at a level higher than the low water level, the injection system 120 mounted on the train in the above- Since the automatic valve 270 is opened by the valve 170 and the pressurizing means 150 is activated at the same time, pressure water is supplied to the injection nozzle 280 to perform concentrated injection on the upper part of the rail, Can be reduced.

6 is a perspective view of a water supply installation for a preferred embodiment of the injection system according to the present invention.

FIG. 6 is a view showing a water supply device 140 according to an embodiment of the present invention. The water supply device 140 may be configured in various ways to effectively operate the electric vehicle injection system. More preferably, Busan

(For example, Seoul metro line 3) is installed in the above-mentioned water supply system 140 by installing the water supply system 140 as described above, for example, : 48) It is possible to supply the water supply by using waiting time for departure when the train is waiting for the goods to be put on the Y line after the change of the upper and lower line sequentially, so that the efficiency of the injection system is doubled .

As described above, if the water supply device 140 is provided on the Y line 400 at the starting point and the ending point of the subway using the structure and support rods, it is possible to complete the one-way operation and switch the up and down routes When it is worn on the Y line (catch line), it is possible to supply the water supply simply by using the waiting time.

In addition, when a train arrives at the Y line, the body of the electric motor vehicle is close to the column of the tunnel structure (50 to 60 Cm). Therefore, when the door system with the injection system 120 is opened, the water supply device 140 can be easily handled And the water supply device 140 is provided in the Y line, so that the electric vehicle injection system for improving the air quality in the underground tunnel can be efficiently operated.

When the level sensor 190 and the control unit (not shown) are interlocked with each other and the water level of the water in the water supply tank 130 is higher than the high water level by the Y-line water supply unit 140, And the water supplied over the high water level point is discharged to the outside through the water supply port cover hollow portion.

In addition, a heater device 370 is provided to operate the injection system 120 during the winter season so as to spray on both sides of the tunnels of the subway and on the sides of the tunnels. When the outside air temperature is below the set temperature, The heater device 370 operates.

In addition, when the stored water level falls below the low water level and when the outside air temperature rises above the set temperature, the power source of the heater device 370 is shut off and the operation of the heater device 370 is stopped.

In order to preferably configure the injection system 120, the injection units 330, 340 and 350 are welded to the bottom surface of the water supply tank 130 by welding, Since the heater system 370 is interposed in the injection system 120 and the thermal effect of the injection nozzle 280 coupled to the injection units 330, 340 and 350 is maintained, System 120 is configured to be operational throughout the year.

A ball joint 380 is interposed between the injection units 330, 340 and 350 and the injection nozzle 280 to be provided in the injection system 120 to increase the fine dust adsorption efficiency of the electric vehicle injection system 120, And the injection angle of the injection nozzle (120) can be adjusted through the injection valve (380).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Or variations are within the scope of the present invention.

The present invention is characterized in that the injection system is mounted on a non-powered vehicle (T car) during the production of a train, and the air quality of the subway tunnel is automatically improved by continuously spraying the subway tunnel road, It can be applied to railway train of city subway operating organization and it can be applied to high-speed railway line, wide railway line, industrial line which conducts spraying work on rails in order to prevent accidental rails.

In addition, since a new railway vehicle can be equipped with a railway injection system, which is a technique of the present invention, at the manufacturing stage, it can be applied to a railroad car manufacturing company.

100: Electric train 110: Rail
120: injection system 130: water tank
140: Water supply device 150: Pressurizing means
160: diaphragm 170: control panel
180: Control unit 190: Level sensor
200: temperature sensor 210: water level window
220: Water level indicator lamp 230: Water inlet
240: Water supply port 250: Water supply port
260: Automatic valve 270: Automatic valve
280: jet nozzle 290:
300: check valve 310: drain valve
320: pressure control valve 330: injection unit
340: injection unit 350: injection unit
360: Drain water 370: Heater device
380: ball joint 400: Y line (lead wire)
410: Structure column

Claims (7)

In a subway tunnel injection system for improvement of air quality,
A water supply tank 130 for receiving water supply from the Y line (induction line) 400 through the water supply port 250;
A pressing means (150) for pressing the storage water in the water supply tank (130);
A spraying unit (330, 340, 350) to be inserted into the water supply tank (130) by welding;
A spray nozzle 280 screwed to the spray units 330, 340, and 450 vertically provided in the water supply tank 130 at a lower outer side of the spray device 120;
And a control panel (170) for controlling the injector (120) through interlocking with a plurality of sensors to be provided in the injector (120). The electric motor vehicle system The method of claim 1, wherein
Among the plurality of sensors, the automatic valve 270 is opened by the interlocking operation of the temperature sensor 200 for detecting the temperature around the rail by the ground line and the level sensor 190 for detecting the water level in the water supply tank 130, (150) performs concentrated injection of the pressure on the surface of the rail by way of the ground line through the injection nozzle (280) via the injection unit (350) The method of claim 1, wherein
A position sensor (not shown), a level sensor 190, and a control panel 170 are linked with each other in a quadrature curve region where under-noise occurs due to friction between the railway wheel and the rail 110 of the main railway line of the city railway. 270) is opened and the pressure is injected by the pressure means (150) through the injection nozzle (280) through the injection unit (350) to concentrate the surface of the curved section rail The method of claim 1, wherein
For efficient operation of the electric vehicle injection system 120,
And the water supply device 140 is provided in the Y line 400 so that the water supply can be easily provided to the electric vehicle injection system 120 that is one way after the one- system The method of claim 1, wherein
The water supply port 250 is provided in the form of a BOX on one side of the vehicle door where the injection system 120 is installed to receive water supply from the Y line 400 water supply device 450,
A water supply port 250 and a plurality of indicator lamps 220 to display the water level of the water stored in the sprayer 120 by the interlocking operation of the level shaper 190 and the control panel 170, 250) is connected to the injector upper side water supply port (240) through a hollow induction pipe The method of claim 1, wherein
The injection units 330, 340 and 350 are welded to the inner bottom surface of the water supply tank 130 to facilitate the warming of the water in the water supply tank 130 and the compact structure of the water supply tank 130. In addition, Wherein the injection device (120) is configured to be able to be used year round by the thermal effect of the injection nozzle (280) coupled to the injection units (330, 340, 350) The method of claim 1, wherein
Wherein a ball joint (380) is interposed between the injection units (330, 340, 350) and the injection nozzle (280) for controlling the injection angle of the plurality of injection nozzles (280)

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