KR200493847Y1 - Unit for making steam - Google Patents

Abstract

The present invention relates to a steam generating unit that generates a large amount of steam in a manner that instantaneously heats supplied water, in an embodiment, a hollow shell, rolled in a spring shape with a hollow center, and disposed close to the inner circumferential surface of the shell A pipe line, installed in the empty center of the pipe line, rolled in a spring shape having a smaller diameter than the pipe line, and poured in a molten state into a plurality of heaters and the shell disposed to be spaced apart from each other in the vertical direction, the pipe Provided is a steam generating unit including a line and a plurality of heaters therein and having a passing casting body.

Description

Steam generating unit {Unit for making steam}

The present invention relates to a steam generating unit that generates a large amount of steam by instantaneously heating supplied water.

The steam generating unit is used in various products such as washing machines, sterilizers, and cookers that use steam. Steam is used intermittently or continuously depending on the place of use. For example, steam is used intermittently for a relatively short period of time in a steam washer installed in a car wash facility. can be expected to work. For such intermittent use, it is necessary to immediately generate steam, and to be able to discharge and intermittently steam.

The basic operation of the steam generating unit is to boil a certain amount of water stored in the water tank with a heater, etc. to generate steam, to discharge the generated steam to the outside, and then replenish the water in the water tank when water is insufficient. Since the steam generating unit according to this conventional method generates steam only when all the water in the water tank is boiled, it takes a long time from the time the heater is operated to the time the steam is discharged, and there is a disadvantage that steam cannot be used at the time of water replenishment.

In order to overcome this, an instantaneous heating type steam generating unit that generates steam by heating a metal pipe through which water passes has been developed. The instantaneous heating type steam generating unit has a heater that intensively heats the metal pipe, so it can generate steam in a faster time than the conventional technique of heating the entire water, but it is difficult to provide a large amount of steam due to a large amount of heat loss during heating of the metal pipe. It is difficult and has the disadvantage that it requires a lot of experience to design the capacity of the pump and heater.

Republic of Korea Patent Registration No. 10-1060684 (2011.08.24) Republic of Korea Public Utility Model No. 20-2012-002680 (2012.04.19)

An object of the present invention is to provide a steam generating unit capable of obtaining a large amount of steam within a short time.

In addition, the detailed purpose of the present invention will be clearly grasped and understood by experts or researchers in this technical field through the detailed contents described below.

In order to solve the above problems, the present invention is a hollow shell, rolled in a spring shape with a hollow center as an embodiment, a piping line disposed close to the inner circumferential surface of the shell, and installed in the empty center of the piping line, the piping line A plurality of heaters rolled in a spring shape having a smaller diameter and disposed to be spaced apart from each other in the vertical direction, and a casting that is poured into the shell in a molten state to include the pipe line and the plurality of heaters therein. A steam generating unit is provided.

Here, the inlet and outlet of the pipe line protrude to the upper part of the shell, and the water entering the inlet is first transferred to the lower part of the shell and then heated while rising from the inside of the shell along the shape of the pipe line rolled into a spring shape. and can be evaporated into steam.

Meanwhile, three heaters are provided, temperature control of the heaters is performed individually, and the temperature of each of the heaters may be gradually controlled to be higher in the order of the middle height heater, the lowermost heater, and the uppermost heater.

Further, the insulating material is coupled to the periphery of the shell, and the insulating silicone covering the top surface including the insulating material is laminated on the upper end of the shell.

According to the present invention, it is possible to continuously obtain a large amount of steam through a long pipe line and a plurality of heaters. In addition, a plurality of heaters enable smooth steam supply even when intermittent steam is generated.

Other effects of the present invention will be clearly understood and understood by an expert or researcher in the art through the specific details described below, or during the course of carrying out the present invention.

1 is a schematic perspective view of a steam generating unit according to an embodiment of the present invention;
Figure 2 is an exploded perspective view showing the embodiment of Figure 1;
Figure 3 is a perspective view showing a state in which some components of Figure 2 are assembled.
Figure 4 is a plan view showing the internal configuration of the embodiment of Figure 1;
Fig. 5 is a front view schematically showing the internal configuration of the embodiment of Fig. 1;

Hereinafter, the configuration, function and operation of the steam generating unit according to the present invention will be described with reference to the accompanying drawings. However, throughout the drawings, reference numbers for the same or similar components will be used uniformly.

The accompanying drawings show embodiments to which the present invention is applied, and the technical spirit of the present invention should not be construed as limited through the accompanying drawings. If it can be construed from the point of view of an expert in this technical field that some or all of the drawings shown in the drawings are not necessarily in the shape, shape, and order required for the implementation of the design, this does not limit the technical characteristics of the invention described in the claims. No.

1 is related to a schematic perspective view of a steam generating unit according to an embodiment of the present invention. The steam generating unit 100 according to the embodiment of the present invention has a substantially cylindrical shape, and is provided in the upper portion of the inlet 21 through which water is introduced, the outlet 22 through which steam is discharged, and the steam generating unit 100 . A distal end 31 for electrical connection of the plurality of heaters 30 is exposed.

The distal ends 31 of the heaters 30 are connected to the power supply means 300 , and the power supply means 300 supplies electricity to the heater 30 to generate heat.

Meanwhile, the inlet 21 is connected to the fluid pump 200 to receive water pressurized by the fluid pump 200 . While passing through the steam generating unit 100 , water is heated by the heat transferred from the heater 30 , and is vaporized to become steam. The generated steam exits the steam generating unit through the outlet 22 and is provided to the steam gun 400 , and the user can use the steam by manipulating the trigger 410 of the steam gun 400 .

Although not specifically illustrated, the trigger 410 of the steam gun 400 is interlocked with the shut-off valve inside the steam gun, and may be electrically connected to a control unit involved in the operation of the fluid pump. That is, the control unit operates the fluid pump according to the operation of the trigger, and the control valve inside the steam gun can be controlled on/off under the involvement of the control unit. For example, when the trigger is released, the operation of the fluid pump is immediately stopped to block additional water from entering the steam generating unit, but depending on the situation, the remaining water in the steam generating unit is vaporized and discharged into steam. The shut-off valve inside the steam gun can be closed with a time difference to exit. In this case, it is possible to prevent an overload inside the steam generating unit due to water or steam remaining in the steam generating unit.

In another embodiment, it is possible to omit the involvement of the control unit, and to provide a delay switch for the operation of the trigger, so that the shut-off valve operates to close after a predetermined time has elapsed after the trigger is released.

2 to 5 relate to a steam generating unit according to an embodiment of the present invention.

The steam generating unit 100 according to the embodiment of the present invention includes a shell 10 , a piping line 20 , a plurality of heaters 30 , and a casting body 40 . Furthermore, as an additional configuration, it may further include a thermal insulation material 50 , a thermal insulation silicone 60 , or a support leg 70 .

The shell 10 is hollow, and forms the main outer shape of the steam generating unit 100 . The shell 10 performs the same role as the case during the process of generating the cast body 40 to be described later. The shape of the shell 10 may be variously changed, for example, it may be a hexagonal shape, an oval shape, etc. with open top and bottom. It may be preferable to manufacture the shell 10 in a cylindrical shape in consideration of the thermal expansion of the casting by the heater and the difficulty of manufacturing.

The pipe line 20 is formed by processing a pipe made of a metal material, and is rolled into a spring shape with an empty center and mounted in the shell. This spring-shaped diameter is formed smaller than the inner diameter of the shell 10, and when the rolled piping line 20 is put inside the shell 10, it is possible to maintain a sufficient distance from the inner peripheral surface of the shell 10 ( see Fig. 4).

The piping line 20 rolled in a spring shape along the inner circumferential surface of the shell 10 has an advantage in that the length of the piping line 20 in the shell 10 can be very long. By increasing the heat transfer area from the heater and the cast object heated by the heater, the temperature of the water passing through the piping line can be rapidly and rapidly increased. In addition, even if the flow rate of water entering the inlet is increased by increasing the operating flow rate of the fluid pump, sufficient vaporization is performed while passing through the long pipe line, so that a large amount of steam can be provided to the user.

One end of the pipe line 20 (the portion connected to the inlet 21) through which water flows is directly descended from the upper part to the lower part, and is then processed into a curved surface and rolled up in the form of a spring. Therefore, the water entering the inlet 21 is first transferred to the lower part of the shell 10 and then heated while rising from the inside of the shell 10 along the shape of the pipe line 20 dried in a spring shape, evaporated into steam, and then evaporated to the outlet. (22) exits.

By adopting a structure in which water is vaporized while rising from the bottom of the shell 10 and exits to the top, the vaporized steam and water always flow in the same direction (from the bottom to the top). Therefore, the fluid flow in the pipe line 20 is made smoothly, and the stagnation element in the flow of the fluid is reduced, so that it is possible to smoothly discharge steam at the beginning and the end of the operation of the steam generating unit 100 .

In addition, the descending line 20a, through which external room temperature water goes straight down to the bottom of the shell 10 through the inlet 21, is disposed to face the center rather than the line in the middle part rolled in a spring shape, so that the heaters 30 located close As the water at room temperature is heated, heat is largely absorbed. As the descending line 20a is located close to the heater, which is a heat source, the temperature of the water flowing into the pipe line 20 is rapidly increased.

The center of the rolled pipe line 20 forms an empty space, and in this empty space, the heaters 30 rolled in a spring shape like the piping line are positioned.

The heater 30 is rolled in a spring shape like the piping line 20 and is located in the empty space in the center of the piping line 20 . The diameter of the heater 30 rolled into a spring shape is smaller than that of the piping line 20 , so that it does not directly contact the piping line 20 when viewed from a plan view.

In the illustrated embodiment, three heaters are shown as being provided in the vertical direction, but in another embodiment not shown, two or more heaters may be used. In each heater 30, the diameter of the portion rolled into a spring shape may be substantially the same.

Each heater 30 is disposed vertically so as not to contact each other.

Although not shown, a wire or the like may be used to fix the positions of the piping line 20 and the heaters 30 .

The cast body 40 is a metal that is poured into the shell in a molten state, passes while including the piping line 20 and the plurality of heaters 30 therein, and fills the inside of the shell. The cast body 40 may be made of metal of various materials, such as an aluminum alloy.

The molten metal liquid fills the space between the pipe line 20 and the heater 30 as it evenly fills the inside of the shell 10 . After curing, it functions as a heat transfer passage that quickly transfers the heat of the heater 30 to the piping line 20 .

Water flowing through the inside of the piping line 20 can be heated in all directions of the piping line 20 while the casting body 40 is heated by the heaters 30 that generate heat to approximately 200° C. to 240° C. The heat transfer efficiency of the cast body 40 made of metal is excellent, enabling rapid generation of steam at the beginning of operation.

Referring to FIG. 5 , an insulating material 50 wound around the shell 10 as an additional configuration, and insulating silicone 60 covering the top surface of the shell 10 including the insulating material 50 are shown. .

The insulating material 50 prevents the casting body 40 and the shell 10 from rapidly cooling when the power supply of the heaters is temporarily stopped due to intermittent use. The insulating material 50 may be manufactured by laminating a plurality of insulating sheets, wherein the insulating sheet may adopt one of the known insulating sheets used in a high temperature environment.

In addition, the insulating silicone 60 covers the upper portion of the shell 10 to cover the end of the insulating material 50 and the exposed casting body 40 to the upper portion, thereby preventing the thermal insulation effect and contamination by foreign substances.

Furthermore, the support leg 70 is mounted on the bottom of the steam generating device, and the steam generating unit 100 is configured to be placed on the supporting leg 70 , so that the steam generating unit 100 and the bottom of the device can be spaced apart. The support legs 70 protect the bottom of the device from the high temperature of the steam generating unit. The support leg 70 may be firmly coupled with a bolt or the like by forming a screw tab at the lower end of the hardened casting body.

Meanwhile, in an embodiment in which three heaters are provided in the vertical direction, temperature control of each heater 30a , 30b , 30c may be performed individually. The control unit can control the temperature for each heater by varying the current value supplied to the heater through the power supply means.

As a pattern of temperature control for each heater, the temperature may be gradually controlled to be higher in the order of the middle-height heater 30b, the lowermost heater 30c, and the uppermost heater 30a. By lowering the temperature of the heater 30b of the middle height, it is possible to solve the problem of damage to the soundness of the cast object due to thermal expansion. That is, by relatively lowering the heating temperature of the central portion of the steam generating unit 100 where the internal pressure is concentrated by thermal expansion, the problem of expansion due to heat generation can be reduced.

On the other hand, the uppermost heater 30a directly affects the temperature of the discharged steam, and operates at the highest temperature in order to increase the final temperature of the steam in most cases.

It is possible to provide high-quality steam to the user while alleviating problems such as thermal expansion by differentiating the control temperature of the heaters 30a, 30b, and 30c according to the upper, middle, and lower heights.

In another embodiment, the plurality of heaters may be controlled to receive the same current at the same time, and in this case, the heaters may be connected in parallel. When a failure occurs due to disconnection of one heater, since the other heaters can generate stable heat, it is still possible to generate steam.

100: generating unit
10 : shell
20: piping line 21: inlet 22: outlet 20a: descending line
30, 30a, 30b, 30c: heater 31: distal end
40: cast body
50: insulating material 60: insulating silicone 70: support leg
200: fluid pump 300: power supply means 400: steam gun 410: trigger

Claims (4)

hollow shell,
A piping line that is rolled in a spring shape with an empty center and disposed close to the inner peripheral surface of the shell,
three heaters installed in the empty center of the pipe line, rolled in a spring shape having a smaller diameter than the pipe line, and spaced apart from each other in the vertical direction;
It is poured into the shell in a molten state and includes a casting body including the pipe line and the heater therein,

The inlet and outlet of the pipe line protrude to the upper part of the shell,
The water entering the inlet is first transferred to the lower part of the shell along the descending line, and then is heated while rising inside the shell along the shape of the pipe line dried in the shape of a spring and evaporated into steam,
The descending line is disposed closer to the center of the shell than the spring-shaped rolled piping line,

Temperature control of each of the heaters is performed individually,
The temperature of each of the heaters is characterized in that the temperature is gradually controlled to be higher in the order of the middle height heater, the lowermost heater, and the uppermost heater.
Steam generating unit.
delete delete In claim 1,
Insulating material is coupled to the circumference of the shell,
Insulating silicone is laminated on the upper end of the shell to cover and cover the upper surface, including the insulating material.
Steam generating unit.

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