KR20140131886A - Steam generator - Google Patents

Abstract

The present invention relates to a steam generator and, more particularly, to a steam generator which prevents breakdowns as a heating unit for generating heat and a supply pipe (heating fluid flow unit) in which water flows are formed integrally by a heat conduction unit, and which enhances heating efficiency as the heat conduction unit which receives heat of the heating unit fully transfers heat while surrounding the heating fluid flow unit due to a unibody structure formed by die casting. The steam generator includes: a heating unit which receives electricity to generate heat; a heating fluid flow unit through which water passes to generate steam by heat of the heating unit; and a heat conduction unit in which the heating fluid flow unit and the heating unit are included and which is manufactured by casting molten metal in a mold.

Description

Steam Generator {STEAM GENERATOR}

More particularly, the present invention relates to a steam generating device, and more particularly, to a steam generating device capable of preventing a frequent failure by integrally forming a heat generating part generating heat and a supply pipe (heating fluid flow part) And a heating unit for heating the water, the heating unit comprising: a heating unit for heating the water;

Generally, steam generated by heating water is used for boiler steam generation, heating supply of large buildings, steam cleaner, steam high pressure washer, steam cooking, steam room, greenhouse warming, laundry ironing, In addition, steam can be used in various forms and various forms for the steam room and the greenhouse.

The steam generating device, which is used in various ways, mainly charges a predetermined amount of water supplied from the outside in a tank-type water tank and is heated by a heating device. When a lot of water is contained in the tank, .

Some steam generators cause the heating wire to be heated several times around the tube through which the water flows, but these devices have the disadvantage of frequent electrical failures due to short circuits.

Particularly in the case of some small steam humidifiers, since the heating zone is very short, hot water droplets that are heated instantaneously do not change into steam, and hot water droplets often occur. In this case, if hot water droplets touch your skin, you may get burned. In addition, when water droplets are bouncing, noise can cause discomfort in life.

In addition to this, in the case of storing water in a large water tank or winding a heating electric wire around a water flow pipe, since the heating part, the heating part and the water flowing part are not formed integrally, they always flow, There is a problem that the device is frequently broken down.

Therefore, there is an urgent need for a steam generating device that has a structurally stable shape and can use safe steam without malfunctioning in operation.

In order to solve the above-mentioned problems, the present invention has an object to prevent frequent breakdown by integrally forming a heat generating part where heat is generated and a supply pipe (heating fluid flow part) through which water flows, by the heat conductive part.

Another object of the present invention is to improve the heating efficiency because the heat conduction part that receives the heat of the heat generating part covers the heating fluid flow part and heats the water in the whole area.

Still another object of the present invention is to provide a small-sized heat generating unit, a heat conduction unit, a heating fluid flow unit, and the like because they are integrally formed and have a simple configuration.

It is a further object of the present invention to solve the disadvantages of oxidation due to the fact that the heat conduction portion is made of aluminum material but does not directly contact the flowing water.

According to an aspect of the present invention, there is provided a steam generator including: a heating unit that receives electricity to generate heat; A heating fluid flow portion through which water is allowed to pass and steam is generated by the heat of the heating portion; And a heat conduction unit including the heating fluid flow unit and the heat generating unit, the heat conduction unit being formed by casting molten metal into a mold or a mold.

Therefore, in the preferred embodiment of the present invention, the heating fluid flow unit is formed of a metal pipe, and prevents water flowing in the inside from being contacted with the external heat conduction unit to prevent deformation of the heat conduction unit due to water. Device.

Also, in a preferred embodiment of the present invention, the heat conduction unit is manufactured by any one of a die casting process, a precision casting process, a powder metallurgy process, and a gravity casting process, and the heat conduction unit, the heating fluid flow unit, A steam generating device characterized in that a heat conduction part is integrally formed.

According to a preferred embodiment of the present invention, there is provided a steam generating apparatus including a heat insulating portion surrounding the outside of the heat conductive portion to prevent heat from being released from the heat conductive portion.

Further, in a preferred embodiment of the present invention, the heat conduction part is made of copper, an alloy, or aluminum, the heating fluid flow part is made of copper, stainless steel or an alloy, and the heat generating part is a PTC heating element And a steam generator for generating steam.

According to the present invention configured as described above, there is an effect that frequent failure can be prevented by integrally forming the heat generating part where heat is generated and the supply pipe (heating fluid flow part) through which water flows, by the heat conductive part.

Further, another effect of the present invention is that the heating efficiency is improved because the heat conduction part that receives the heat of the heat generating part surrounds the heating fluid flow part and heats the water in the whole area.

Further, another effect of the present invention is that the heat generating portion, the heat conduction portion, the heating fluid flow portion, and the like are integrally formed and formed into a simple shape, so that they are compact and easy to use.

Another advantage of the present invention is that the heat conduction portion is made of aluminum material, but does not directly contact the flowing water, so there is no corrosion of oxidation and stable steam generation is achieved.

Further, another effect of the present invention is that since the heat generating portion is made of the PTC heating element and is not heated to a predetermined temperature or more, the entire steam generating device is stably made and heat is shut off by the heat insulating portion to the outside, .

Further, another effect of the present invention is that the manufacturing process is simple since the manufacturing of the heat conduction part is performed by casting in addition to the heat generating part and the heating fluid flow part, so that the manufacturing cost is reduced.

FIG. 1 is a perspective view of an embodiment in which a heat generating unit and a heating fluid flow unit are connected to each other in opposite directions in the steam generator according to the present invention.
2 is a view illustrating an example of coupling to a heating unit and a heating fluid flow unit of the steam generator according to the present invention.
3 is a front view of the heating fluid flow portion of the steam generator according to the present invention.
4 is a front view of a heating unit of the steam generator according to the present invention.
5 is a cross-sectional view of a steam generator according to the present invention.
FIG. 6 is an exemplary view showing a state where the steam is changed into steam during the flow of water flowing into the heating fluid flow unit of the steam generator according to the present invention.
FIG. 7 is an exemplary view illustrating a state in which the heating fluid flow portion of the steam generating device according to the present invention is switched to steam during the flow of water with respect to the heat conductive portion positioned inside.
FIG. 8 is a flowchart of manufacture and operation according to the steam generator according to the present invention.
FIG. 9 is a perspective view of an embodiment in which a heating portion and a heating fluid flow portion are connected in one direction in the steam generating device according to the present invention.

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

That is, the steam generator 10 manufactured by the die-casting method according to the present invention is a steam generator for supplying water to one side and heating water to discharge steam to the other side as shown in FIGS. 1 to 9 .

Steam is usually used in various fields. That is, the steam generated by the steam generator 10 according to the present invention maintains a high temperature and can be used in various ways in various fields such as heating of a large building, use of a steam room, heating for heating, and hot water supply will be. It can be used in boiler steam generation, steam cleaner, steam high pressure washer, steam cooking, steam room, greenhouse warming, laundry ironing, etc. Also, it is possible to use hot steam to melt frozen parts, It can be used for various tasks such as using work.

Steam cleaners, steam high pressure washer, boiler steam generator, steam generator in the high-rise building to send steam to the upper floor, steam heating equipment, laundry ironing steam supply, steam cleaner, steam generator for steam cooking, It is applicable to the place where it is used.

In addition, in many cases, the freezing portion is used for rusting or cooking. The steam generating device can be lightly carried while being operated, and the present invention may be provided for the present invention.

The construction of the steam generator 10 according to the present invention will now be described in detail.

First, a heating fluid flow unit 30 is provided to allow water to pass therethrough and generate steam by the heat of the heating unit 20, together with a heating unit 20 that generates electricity by receiving electricity. The heating unit 20 may include heating elements of various embodiments, and in particular, a heating element connected to the electricity supplying member and generating heat by electric power supply. The heat generating portion 20 may be made of barium titanate, ceramics, or the like, and may have a rectangular cross section or a circular pyramid. Also, depending on the operating conditions, the metal outer body may be used as a protective member to prevent damage to the internal heating member. In addition, it is preferable that the temperature rise by the heating unit 20 has a predetermined temperature (about 250 ° C. to 350 ° C.). When the heating unit 20 reaches the predetermined temperature to have the predetermined temperature, It may be made of material or device whose temperature rise is suppressed. The use of a PTC (Positive Temperature Coefficient Thermistor) heating element makes it possible to provide a steam generating device that performs a more stable heating operation.

In addition, a metal pipe or a metal protective layer may be formed on the heat generating portion 20 including a PTC heating element and other heating elements through electric power supply. The metal protective layer may prevent thermal stability and external pressure stability The layer structure and the heat generation characteristic of the heat generating portion 20 or the damage to the internal structure due to the metal layer can be prevented even if the heat generating portion 20 is formed by casting during the formation of the heat conductive portion 40 as in the example of the present invention, May be performed so as not to be damaged. The other heat generating portion 20 may be embodied by including various commonly used heat generating bodies.

The heat conduction unit 40 includes the heating fluid flow unit 30 and the heat generating unit 20, and the molten metal is filled in a mold or a mold.

That is, the heat conduction unit 40 serves as an external body for simply fixing the heating fluid flow unit 30 and the heat generating unit 20, and the heat generated by the heat generating unit 20 is transmitted by the heat conduction unit 40 So that the heating fluid flow portion 39 is heated. Thus, the heat conduction unit 40 plays a dual role.

As shown in FIG. 1, the heat generating unit 20 and the heating fluid flow unit 30 may be installed in opposite directions to the heat conduction unit 40, and the heating unit 20 and the heating fluid flow (30) are installed in the same direction. And the other ends of the heating fluid flow section 30 are arranged in the same direction as in the example of the accompanying drawings. Or may be installed in the same direction, such that the steam generating device 10 according to the present invention is installed.

FIG. 1 is a perspective view of an embodiment in which a heat generating unit and a heating fluid flow unit are connected to each other in opposite directions in the steam generator according to the present invention.

In addition, the heating fluid flow unit 30 is made of a metal tube, and prevents water flowing inside from contacting the external heat conduction unit 40, thereby preventing deformation of the heat conduction unit 40 due to water . Most of the heat conduction unit 40 is made of a metal material and may be made of an aluminum material to improve the heat conduction performance. When the heating fluid flow portion 30 is made of a metal pipe as in the present invention, water flowing into the heating fluid flow portion 30 is directly contacted with the heat conductive portion 40 . Therefore, it prevents the possibility that the heat conduction part 40 is oxidized by water, thereby preventing morphological deformation such as oxidation of the heat conduction part.

If part of the aluminum oxidized by water in the flow path through which the water flows into steam is desorbed by oxidation and contained in the steam, the steam containing this aluminum oxide may be in contact with other devices, food, Serious concerns can arise. Therefore, in the case where the heating fluid flow unit 30 is made of a metal tube and is made of a material having no shape deformation, as in the present invention, steam can be safely used because only water changes state to steam.

For this, the heating fluid flow unit 30 is preferably made of copper, stainless steel or an alloy. The heating fluid flow portion 30 through which the water and the steam flow therein is made of a material which does not cause a corrosion reaction due to contact with water such as copper, stainless steel, or alloy, so that the shape of the heating fluid flow portion 30 is not deformed, And the circulation and steam generation occur.

In addition, the heat conduction unit 40 is made of copper, an alloy, or aluminum. Particularly, in order to effectively transfer the heat of the heat generating portion 20 to the heating fluid flow portion 30, the heat conducting portion 40 is preferably made of aluminum. As described above, water or steam is directly brought into contact with the heat conduction part 40 without the heating fluid flow part 30, so that the heating fluid flow part 30 prevents the heat conduction part 40 from being oxidized .

Particularly, the heat conduction unit 40 is manufactured by any one of a die casting method, a precision casting method, a powder metallurgy method, and a gravity casting method. For this purpose, in order to manufacture the heat conduction part 40 to be manufactured by casting or the like in a state where the heat generating part 20 and the heating fluid flow part 30 are first prepared by cutting, bending, or the like, The frame is constructed first. That is, a mold or a mold frame corresponding to the shape of the heat conduction unit 40 is first prepared to manufacture the heat conduction unit 40.

2, the molten material for forming the heat conduction unit 40 is put into the mold for the heat conduction unit 40 and the heat conduction unit 30 40).

As described above, the heat conduction unit 40 is manufactured by any one of the die casting method, the precision casting method, the powder metallurgy method, and the gravity casting method. Therefore, it is preferable that the casting method of the die casting method is manufactured.

In addition, the steam generating device 10 manufactured by the die-casting method according to the present invention includes a heat insulating portion 50 that covers the outside of the heat conductive portion 40 and prevents the heat radiation of the heat conductive portion 40 .

The heat conduction unit 40 directly contacts the inside of the heat insulation unit 50 to prevent the heat of the heat conduction unit 40 from being radiated to the outside. In addition, since the heat insulating portion 50 prevents heat radiation to the outside of the heat generating portion 20 and the heating fluid flow portion 30 in addition to the heat conductive portion 40, It becomes easy.

Such a heat insulating part 50 serves to block the outside and inside heat, and if it is a material having such heat insulating properties, generally used heat insulating material will be applied. The heat insulating portion 50 may be made of a single material or may be composed of a plurality of materials in a multi-layered structure.

The steam generating apparatus 10 according to the present invention includes a heating fluid flow unit 30 through which water is totally supplied and steam is discharged, a heating unit 20 generating heat by electric supply, a heating unit 20, And a heat insulating portion 50 for preventing the heat of the steam generating device 10 from being discharged to the outside.

As the water flowing inside the heating fluid flow section 30 is changed to steam by the heat generating section 20 and the heat conducting section 40, the heating fluid flow section 30, in which water is changed into steam, If we explain it separately, we can give an example as follows.

First, the heating fluid flow section 30 is in a staggered configuration, as in the embodiment of FIG. 6, and the heating fluid flow section 30 of the metal tube forms three rotating points, Heat exchange is actively performed to form steam.

Water is introduced into the water inflow section 31 into which the water flows into the heating region of the heat conduction section 40 of the steam generator 10. [

The water introduced into the heating fluid flow unit 30 is gradually heated through the water inlet zone 32 introduced into the heating unit 20 and the heat conduction unit 40.

The water is gradually transferred to the water and heated by passing through the water inlet zone 32 and the water heating zone 33 forming a straight pipe. Water passing through the water introduction zone 32 and the water heating zone 33 is heated by endothermic water contacting the pipe wall surface of the pipe-shaped heating fluid flow unit 30, but the central portion of the water is hardly heated.

In this way, the water inflow region 111, which is heated gradually as the water flows, is formed in the heating fluid flow portion 30 and the water heating zone 33 as the heating region.

In this way, only a part of the water is heated in the water inflow region 111, and a part of the water is still in a less heated state. In this state, the water is passed through the water-steam conversion rotation acceleration point 301 as a rotation point. Steam passing through the water-steam conversion rotary acceleration point 301, the water-steam rotation speed of the water-steam conversion rotation acceleration point 301 is increased, As the water near the pipe wall and the water in the center mix with each other, the water particles in the heated state are mixed with each other. Therefore, water can be heated evenly in the subsequent heating zone.

And then passes through the initial vaporization zone 34 where water is heated in earnest. The water that passes through the initial vaporization zone 34 is mixed with liquid water that has not yet been steamed and water that has already absorbed heat to form a steam state. Such liquid water and steam are mixed Thereby forming the water heating region 112 coexisting. In most steam generators, since steam is discharged in a state in which liquid water and steam are mixed, it is less effective to generate steam, and therefore, it is difficult to generate efficient steam. Accordingly, the steam generator 10 according to the present invention is further provided with a region for generating steam more.

That is, most of the water with less steam is mostly in the center, and most of the water constituting the steam is formed in the portion contacting the pipe surface of the heating fluid flow unit 30. In this state, Forming rotation point 302. As shown in FIG. As a result of passing through the steam initial formation spinning point 302, liquid water and steam are evenly mixed. Thus, the steam is distributed evenly throughout the subsequent process.

As the water passes through the steam accelerating zone 35 in the straight line section, the water still passes through the steam accelerating-active zone 113 in which the liquid water is activated as steam and the most water is changed into steam.

After passing through this steam acceleration-active area 113, the water is mostly in a steam state, and some of it is in a small liquid state.

And again passes through the steam activation rotation point 303, which once again allows water to be evenly mixed.

In addition, even in the case of liquid water of a small size passing through the steam active zone 36 and the steam rifling zone 37, which is a straight line section, the state of steam is changed to generate steam in a good state. As a result, steam is generated in the steam discharge area 38, and this area is divided into the steam completion area 114.

That is, the steam generated in the steam completion area 114 is almost stable and the steam is uniformly distributed. Therefore, the steam is optimized to use the steam.

As described above, in the heating fluid flow section 30 according to the present invention, the water inflow section 31 - the water introduction section 32 - the water heating section 33 - the initial vaporization section 34 - the steam acceleration section 35 - Steam is stably generated by the heat transferred from the heat generating unit 20 and the heat conducting unit 40 as the water passes through the steam activating zone 36, the steam compartment 37, the steam discharging zone 38, will be.

In addition, there is provided a mixed rotary point structure that includes a plurality of rotation points to uniformly mix water and steam while properly forming steam. The mixed rotary point structure includes a water-steam conversion rotary acceleration point 301, A point 302, a steam activation rotation point 303, and the like. According to this, the water-steam conversion rotation acceleration point 301 for rotating the water with respect to the initial linear inflow section, the steam initial formation rotation point 302 for partially mixing the generated steam and water, and the And a steam activation rotation point 303 for heating the steam while being mixed with the steam. The steam and water are mixed with each other several times to produce steam with good condition.

The change in the state of the inflowing water to steam is caused by the change of the number of the water including the water inflow region 111-> the water heating region 112-> the steam acceleration-active region 113-> the steam completion region 114, - Steam conversion layers that allow the steam to pass through multiple regions of the water-to-steam conversion stratum and thereby produce steam from the water as it passes through multiple steps in multiple areas.

The method of manufacturing and operating the steam generator 10 manufactured by the die-casting method according to the present invention will now be described.

First, a molding preparation step (S10) for molding and preparing the respective members is performed.

Preferably, the heat generating unit preparation step S11 is performed in which the electric power supply line is connected to the heat generating unit, which is a PTC heating element, to prepare the heat generating unit 20. [ Accordingly, the heat generating unit 20 is prepared in a plurality of bent shapes in a form suitable for the configuration of the heat conduction unit 40 formed by casting.

In addition, a heating fluid flow portion preparation step S12 is performed in which a pipe-shaped heating fluid flow portion 30 is formed in the form of a pipe and water flows therein. The heating fluid flow portion is bent in a plurality of areas as shown in FIG.

In addition, a heat conduction part casting preparation step (S13) is performed to perform a preparation step for manufacturing the heat conduction part (40) and the heat insulating part (50).

Thus, in order to manufacture the heat conduction unit 40, a mold or a mold frame is preliminarily manufactured with a mold suitable for the shape of the heat conduction unit 40.

After the molding preparation step S10 is performed, a device forming step S20 is performed in which the respective members are combined to produce a single steam generating device 10.

A heating portion-heating fluid flow portion positioning step S21 is performed in which each member is positioned inside the frame to a position for manufacturing the heating portion 20 and the heating fluid flow portion 30 to be formed integrally therewith .

In the step S22, the molten material of the molten thermally conductive portion is injected into the mold while the heating portion 20 and the heating fluid flow portion 30 are positioned inside the mold, and the molten material is hardened to form the thermally conductive portion 40. [ Is performed. The die casting method used for the casting is preferably used. As a result, the heat generating portion 20 and the heating fluid flow portion 30 together with the heat conduction portion 40 are formed as a single body mutually so that not only the heat efficiency becomes good but also the structural stability is obtained even when an external force acts, There is no problem.

In addition, a heat insulating part molding step (S23) is performed to wrap the outside of the heat conduction part (40) with the heat insulating part (50).

The operation of operating the steam generator (S30) is performed by heating the supplied water using the steam generator 10 thus manufactured to generate steam.

A heating step S31 for heating the heating unit 20 and heating the heating unit 20 and heating the heating fluid flow unit 30 ahead of the heating time is performed in advance .

Then, a water supply step S32 for supplying water into the heating fluid flow unit 30 is performed.

Of course, the order may be determined in accordance with the execution situation, for example, the heating step S31 is performed while the water supply step S32 is performed first.

The steam generating step S33 is performed in which the water flowing into the heating fluid flow unit 30 is heated by the heat generated by the heat generating unit 20 and the heat conductive unit 40 to be converted into steam to generate steam .

The heat generation part 20, the heating fluid flow part 30, the heat conduction part 40, the heat insulation part 50, and the like, which are formed as a single body, efficiently generate steam.

According to the steam generator 10 manufactured by the die-casting method according to the present invention as described above, first, leakage failure due to casting failure during use does not occur. That is, since water and aluminum do not come into direct contact, leakage due to aluminum corrosion does not occur.

Second, when the water supply is properly calculated according to the amount of heat generated by the heat generating portion, there is no defect that water droplets come out from the steam. That is, steam is formed almost completely because it passes through a plurality of heating and steam generating regions.

Third, there is no loud plosive sound when water drops are mixed in the steam. That is, if the steam generation period is short, a plosive sound or a water droplet other than steam may be generated. However, since it passes through a plurality of heating zones, a plurality of acceleration rotation points and a region for forming a large number of steam, there is no water drop or plosive sound.

Fourth, during the manufacturing process, the electric heating part does not enter the liquid such as sulfuric acid, sodium hydroxide, etc., and the electric leakage part of the electric heating part is eliminated. When aluminum is in contact with water, it is necessary to treat anodizing with respect to aluminum. In the present invention, there is no fear of short-circuiting to the electric heating part because aluminum is not in direct contact with water and there is no anodizing treatment.

Fifth, since the heat generating part and the water supply pipe overlap each other and enter the small aluminum casting body and are manufactured by casting, it is possible to produce steam in a short time even at the initial power-on by the heating at a plurality of stages.

Sixthly, as in the present invention, it is possible to easily perform heat insulation treatment for providing a small-volume steam generator, thereby making it possible to easily and safely make a safe sinker and a cleaner having a small energy efficiency.

The seventh aspect of the present invention is that the heat of the electric heater is efficiently transferred to the water supply pipe and the temperature of the electric heater does not rise to a high temperature, so that the life of the heater is lengthened and energy efficiency becomes very high.

Eighth, when the temperature of the conventional electric heating unit rises to a high temperature of 500 to 700 degrees Celsius, the energy to be discharged to the outside increases, so that the total temperature of the device rises and malfunctions due to high temperature. The temperature of the heat generating part can be maintained at a low temperature of about 250 째 C to 300 째 C, thereby preventing malfunction of the device.

Aluminum oxide (ALO3) debris is not produced when the ninth water supply pipe is made of a copper tube. Therefore, there is no foreign substance such as oxides on the steam, so that the use of steam is stable.

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. The technical idea of the present invention should not be construed as being limited.

10: steam generator 20:
30: Heating fluid flow section 40: Heat conduction section
50:

Claims (5)

In the steam generator,
A heating unit that receives electricity and generates heat;
A heating fluid flow portion through which water is allowed to pass and steam is generated by the heat of the heating portion;
A heat conduction part including the heating fluid flow part and the heat generating part inside and being manufactured by casting molten metal into a mold or a mold;
Wherein the steam generator comprises a steam generator.
The method according to claim 1,
Wherein the heating fluid flow unit is made of a metal tube so that water flowing into the heating fluid flow unit is prevented from coming into contact with the external heat conduction unit to prevent deformation of the heat conduction unit due to water.
The method according to claim 1,
The heat conduction part is manufactured by any one of a die casting method, a precision casting method, a powder metallurgy method, and a gravity casting method,
Wherein the heating portion, the heating fluid flow portion, and the heat conduction portion are integrally formed by the heat conduction portion.
The method according to claim 1,
And a heat insulating portion that surrounds the outside of the heat conductive portion and prevents heat radiation of the heat conductive portion.
5. The method according to any one of claims 1 to 4,
Wherein the heat conduction part is made of copper, an alloy, or aluminum,
Wherein the heating fluid flow portion is made of copper, stainless steel or an alloy,
Wherein the heat generating unit comprises a PTC heating element.

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