KR101738428B1

KR101738428B1 - Electric heating water apparatus

Info

Publication number: KR101738428B1
Application number: KR1020150064040A
Authority: KR
Inventors: 김기섭
Original assignee: 김기섭
Priority date: 2015-05-07
Filing date: 2015-05-07
Publication date: 2017-05-22
Also published as: KR20160131521A

Abstract

The present invention relates to an electric water heater for discharging hot water by instantaneous heating of inflow water in response to use of hot water. More particularly, the present invention relates to an electric water heater for generating hot water, A body including a flow space in which a water channel communicating with the inlet and the outlet is formed; Heating means for forming a spiral heating plate along the longitudinal direction in the flow space of the main body so as to form the water channel in a spiral shape; A casing enclosing the body so that the inlet and the outlet are exposed; And a power unit for applying power to the heating unit.

Description

[0001] Electric heating water apparatus [0002]

The present invention relates to an electric water heater for discharging hot water through instantaneous heating of inflow water in response to use of hot water.

Generally, electric water heaters generate hot water from electric energy and can be used not only at home but also at a small industrial facility site such as a vinyl house or a flower garden without having a heating boiler, so that there is a simple and economical advantage. The maintenance and management of the apparatus should be easy, the maintenance cost should be low, and the apparatus should be downsized.

1, a main body 531 of an electric water heater according to the related art includes a substantially cylindrical container 532 having a heater 533 as a heating device at its bottom portion. A centrifugal pump 534 is provided below the container 532 and is a water supply device in which one end communicates with the outlet 535 of the bottom portion of the container 532 and the other end communicates with the transfer pipe 536.

A temperature detecting element 537 for detecting the temperature of the boiled water in the container 532 is provided on the bottom surface of the container 532. An operation portion 538 having an operation button and a display portion is provided on the upper surface of the main body 531.

The control circuit 539 controls the heater 533 and the centrifugal pump 534 in accordance with a signal from the operation unit 538. [

When the electric water heater supplies water of a predetermined amount to the container 532 and the power source is connected, the control circuit 539 starts supplying electric power to the heater 533. When the temperature detecting element 537 is charged with water The control circuit 539 temporarily stops power supply to the heater 533 and enters a warming operation to control the supply of power to the heater 533 with a signal from the temperature detecting element 537, The boiled water in the boiling water 532 is kept at a predetermined temperature.

The centrifugal pump 534 is driven under the control of the control circuit 539 so that the hot water in the container 532 flows through the transfer pipe 536 Boiled water is supplied. After the desired amount of boiled water is supplied, when the operation of the operation button is stopped, the supply of the boiled water is stopped.

In the case of such an electric water heater, in order to know the water level in the container 532, the transfer pipe 536 is generally formed of a transparent glass pipe so that the transfer pipe 536 can be seen from the outside, If the water is less, the user is allowed to water into the container 532.

In the construction of the electric water heater according to the related art, since the hot water container is used as a reservoir container, it is necessary to store a large amount of boiled water several times as much as the required amount (100 cc to 500 cc) of the boiled water to be used once. Even when the amount of boiled water required is small, there is a problem that unnecessary power is consumed because a large amount of stored boiled water is always heated and kept warm. In addition, when water is replenished by opening the upper lid 545, safety accidents may occur because it is necessary to pay attention to scattering or steam of hot boiled water.

Korea Patent Publication No. 2008-0111913

Accordingly, the object of the present invention is to provide a small and simple structure that is easy to install without regard to the installation site, and operates only when water is used to heat and use water, thereby reducing power consumption Thereby minimizing installation cost as well as maintenance cost.

In order to accomplish the above object, the present invention provides an electric water heater comprising: a body including an inlet and an outlet formed with fastening means for connecting to a water pipe, and a flow space communicating with the inlet and the outlet, respectively; Heating means for forming a spiral heating plate along the longitudinal direction in the flow space of the main body so as to form the water channel in a spiral shape; A casing enclosing the body so that the inlet and the outlet are exposed; And a power supply unit for applying power to the heating unit.

As an example, the electric water heater of the present invention may further include a controller for controlling power of the power source unit.

The control unit may include a flow rate sensor mounted on the channel and a heat sensor mounted on the discharge port to generate a driving signal for driving the heating unit by an output signal of the flow rate sensor, The input power of the heating means can be selectively controlled by the output signal of the heat sensing sensor when the driving signal is generated.

As an example, the casing may comprise an inner layer made of glass wool insulation and an outer layer made of PVC laminated to the outer surface of the inner layer.

As one example, the main body may comprise 10 to 15 parts by weight of a filler, 1 to 3 parts by weight of a lubricant, 1 to 3 parts by weight of a stabilizer, 5 to 10 parts by weight of an impact modifier, 1 to 10 parts by weight of an antibacterial agent, 5 to 5 parts by weight, aldohexose 1 to 3 parts by weight, and an antistatic agent 0.5 to 2 parts by weight.

The main body may further comprise 0.5 to 3 parts by weight of cellulose acetate and 1 to 5 parts by weight of manganese oxide based on 100 parts by weight of the polyvinyl chloride resin.

In addition, the main body may further comprise 0.5 to 1 part by weight of calcium nitrate hydrate and 0.5 to 1 part by weight of aluminum sesquioxide based on 100 parts by weight of the polyvinyl chloride resin.

According to the construction of the electric water heater according to the present invention, it is possible to easily install the water heater without any restriction on the installation place, and to operate only when water is used to heat and use the water. As a result, it is possible to minimize installation cost as well as maintenance cost by reducing power consumption.

In addition, the composition of the main body enhances the impact resistance and controls the generation of various scales on the inner circumference of the fluidized space, and can control the corrosion and odor due to the scale even if scale is generated .

1 is a sectional view for explaining a conventional electric water heater.
2 is a perspective view illustrating a configuration of an electric water heater according to an embodiment of the present invention;
3 is a sectional view showing a configuration of an electric water heater according to an embodiment of the present invention;
4 is a block diagram showing a configuration of a control unit according to an embodiment of the present invention;
5 is a front view showing an application example of an electric water heater according to an embodiment of the present invention;

Hereinafter, an electric water heater of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view illustrating a configuration of an electric water heater according to an embodiment of the present invention, and FIG. 3 is a sectional view showing the configuration of an electric water heater according to an embodiment of the present invention. 4 is a block diagram illustrating a configuration of a controller according to an embodiment of the present invention, and FIG. 5 is a front view illustrating an application example of an electric water heater according to an embodiment of the present invention.

The electric water heater of the present invention comprises an inlet 110 and an outlet 120 as shown in Figure 2 and a flow space 130 in which a water channel communicating with the inlet 110 and the outlet 120 is formed, A heating means provided to heat the flow space 130 of the main body 10 and a heating means provided to surround the main body 10 such that the inlet 110 and the outlet 120 are exposed, And a power source 40 for applying power to the casing 30 and the heating means.

The main body 10 may be formed with the fastening means 100 on the inlet 110 and the outlet 120 so that the main body 10 can be connected to the water pipe 1 to which hot water is supplied.

The fastening means 100 provides a fastening structure by a known technique. For example, as shown in FIG. 2, the fastening means 100 forms a thread on the outer peripheral surface of the inlet 110 and the outlet 120, 1) and a nut or the like.

The heating means may include a spiral heat plate 20 disposed along the longitudinal direction of the body 10 in the flow space 130. The spiral structure of the heat plate 20 may cause the heating space 130 to flow into the flow space 130, The number of channels can also have a spiral.

For example, the heating means may include a spiral heat plate 20 arranged in parallel in the flow space 130 so as to form a gap therebetween at regular intervals. In order to fix the spiral heat plate 20, a central axis of the spiral heat plate 20 And may include a penetrating connecting axis.

As described above, the heating means allows the water passage 140 of the flow space 130 described above to have a spiral shape through the arrangement structure of the spiral heat plate 20, Self-heating through the power source.

The inflow water flowing into the flow space 130 through the inlet 110 is sequentially heated to flow hot water through the spiral channel 140 from thermal energy generated by the heat generated by the heat plate 20, 120 can be discharged.

As described above, according to the present invention, due to the arrangement of the heat plate 20 and the spiral channel 140, the inflow water is gradually heated, so that much energy can be prevented from being consumed for instantly heating the inflow water. As a result, the structure can improve not only energy saving but also heat transfer efficiency.

The casing 40 is configured to enclose the main body 10 so as to protect the main body 10 and the like so that the heat loss of the heating means in the flow space 130 as well as the flow space 130 of the main body 10 It is preferable to have a heat insulating structure so as to minimize the amount of heat.

For example, the casing 40 includes an inner layer 300 composed of glass wool insulation as shown in FIG. 3 and an outer layer 310 made of PVC laminated on the outer surface of the inner layer 300 .

The power supply unit 40 receives commercial power and supplies the commercial power to the heating unit to drive the heating unit.

The power supply unit 40 may include a voltage or current transformer to supply power corresponding to the rated input power required by the heating unit. The power supply unit 40 may include an earth leakage blocking circuit, a stabilization circuit, and a protection circuit And the like.

Meanwhile, the electric water heater according to an embodiment of the present invention may further include a controller 50 for controlling power supplied from the power supply unit 40 to the heating unit.

Although not shown, the controller 50 may include a plurality of buttons for ON / OFF or user setting of the device and a display for displaying various status notifications of the electric water heater.

The controller 50 controls the power of the power unit 40 so that the temperature of the discharged hot water can be adjusted as well as the selective operation of the heating unit.

4, the controller 50 may include a flow rate sensor 500 mounted on the channel 140 and a thermal sensor 510 mounted on the outlet 120 .

At this time, the flow rate sensor 500 is not utilized as an object for sensing the flow rate of the inflow water passing through the channel 140, but is used as a means for detecting the use of hot water from the output of the flow rate signal. That is, it is possible to grasp the use of the hot water from the signal output from the flow rate sensor 500.

The temperature sensor 510 senses the temperature of the hot water discharged through the discharge port 120. The temperature sensor senses the temperature of the hot water through an output signal from the heat sensor 510, ) As a basic data for temperature control.

Meanwhile, the control unit 50 according to the present embodiment generates a driving signal for driving the heating means according to an output signal of the flow rate sensing sensor 500, and when the driving signal is generated, It is possible to selectively control the input power of the heating means.

That is, the controller 50 controls the heating means to be driven only when the hot water is used, and the temperature of the hot water discharged from the water pipe 1 can be kept constant at a predetermined temperature, .

The control unit 50 may further include a communication module 540, a comparison analysis module 520, and a signal generation module 530.

The communication module 540 supports a wired or wireless communication network with the flow rate sensing sensor 500 and the thermal sensing sensor 510 so that signals output from the respective sensors can be transmitted to the comparison and analysis module 520 .

The comparison and analysis module 520 receives a signal transmitted through the communication module 540 and outputs a reference temperature value preset by the user and an output of the heat sensing sensor 510 transmitted through the communication module 540 And transmits the analysis result to the signal generation module 530. [0052] FIG.

When the comparison result of the comparison module 520 indicates that the temperature value of the output signal of the thermal sensor 510 exceeds the predetermined reference temperature value, the signal generation module 530 may over- And generates a control signal for turning off the power supplied to the heating means.

In contrast, if the comparison result of the comparison module 520 indicates that the temperature value of the output signal of the thermal sensor 510 is less than the reference temperature value, the signal generation module 530 may increase the temperature of the hot water to a predetermined value So that the power of the heating means in operation is maintained.

The comparison analysis process and the signal generation process of the comparison analysis module 520 and the signal generation module 530 are performed in real time and the power supplied to the heating means is selectively controlled according to the analysis result.

5, when the user uses the water heater 1 to which the electric water heater is connected, the controller 50 controls the water heater 140 through the flow sensor 140, It senses that the tap water is supplied and outputs a control signal for supplying power to the heating means.

When the heating means is driven for hot water use, the control unit 50 compares and analyzes the temperature of the hot water supplied by the comparison and analysis module 520 in real time with a predetermined reference temperature, and the signal generation module 530 And generates a control signal indicating whether to turn OFF or keep the power of the heating means according to the analysis result of the comparison and analysis module 520 and transmits the control signal to the power source unit 40.

The power supply unit 40 having received the control signal of the signal generation module 530 selectively supplies or blocks the power of the heating means according to the control signal, so that the temperature of the hot water can be kept constant.

Meanwhile, the body 10 according to an embodiment of the present invention is manufactured with the composition described below, so that various features can be given in consideration of the characteristics of a pipe through which tap water flows.

Specifically, the main body 10 comprises 10 to 15 parts by weight of a filler, 1 to 3 parts by weight of a lubricant, 1 to 3 parts by weight of a stabilizer, 5 to 10 parts by weight of an impact modifier, 5 to 10 parts by weight of an antibacterial agent 1 to 5 1 to 3 parts by weight of aldohexose, and 0.5 to 2 parts by weight of an antistatic agent.

The average degree of polymerization of the polyvinyl chloride (PVC) resin is preferably in the range of 800 to 1,000. When the degree of polymerization is less than 800, there is a problem that the tensile strength is lowered. When the degree of polymerization is more than 1,000, the workability is lowered.

As the filler, various known materials such as calcium carbonate may be used, and as another example, loess powder may be added. Such a filler is limited to 10 to 15 parts by weight. When the filler is blended at less than 10 parts by weight, the filler is insufficiently reinforced. When the filler is more than 15 parts by weight, It is possible to cause a problem in the strength.

As the stabilizer, tin and calcium zinc may be used. Preferably, the stabilizer is mixed with 1 to 3 parts by weight of a stabilizer. This stabilizer prevents carbonization of the polyvinyl chloride resin due to heat applied for processing. When the blending ratio is less than 1 part by weight, the effect is insignificant. When the blending ratio is more than 3 parts by weight, the impact strength is lowered and the production cost is increased. Such a stabilizer may be used together with 1 to 3 parts by weight of the lubricant, and the lubricant may be stearic acid, stearyl alcohol, stearylbutyl, or the like.

As the impact modifier, one or two or more of Methyl Methacrylate-Butadiene Styrene (MBS), acrylic and butadiene series may be used, and the compounding ratio is limited to 5 to 10 parts by weight. As the impact modifier is compounded, the main body 10 made of the polyvinyl chloride resin composition of the present invention has impact resistance.

As the antibacterial agent, various known inorganic, organic, and plant antibacterial agents may be used. By adding the antimicrobial agent, it is possible to effectively inhibit infection or proliferation of bacteria and fungi occurring in the inner circumference of the tube of the main body 10, which is used as a tube, and to enhance the corrosion resistance. Further, It will be possible.

Especially, it is appropriate to use a plant antimicrobial agent. However, unlike the prior art antimicrobial agents such as zinc oxide (ZnO), no additional chemical action takes place and secondary environmental problems are not caused.

In addition, static electricity is generated by tap water flowing in the main body 10 of the present invention having a pipe (inlet, outlet, and flow space) structure, and the generated static electricity scales by adsorbing the inorganic matter in the water. The anti-antiglare agent is added.

Particularly, in the present invention, Aldohexose is added as a composition for deodorization. Even if the antistatic agent is added, deposition of scale can not be completely prevented when microcracks or the like are generated inside the tube of the main body 10 .

By this scale, odor is generated due to bacterial propagation or the like. In the present invention, Aldohexose is added in order to control the generation of such odors. Such aldohexose is a polysaccharide component but has Aldehyde Group and shows deodorizing action. For example, it converts odorous hydrogen sulfide (H2S) into odorless substance as shown below to remove odor.

In general, a porous mineral is added for deodorization. When a porous mineral is added, deodorization is carried out by adsorption of a deodorant substance. However, there is a case where desorption of a porous mineral and other composition occurs due to the adsorbed deodorant material, Which can lead to adverse consequences. Therefore, in the present invention, Aldohexose is added so that deodorization can be performed without concern of strength reduction.

According to this embodiment, as described above, anti-antidumping agent is added to the main body 10 to control the generation of static electricity to prevent scaling due to inorganic deposits. Various scaling due to immersion of oil and scale due to deposition of sludge It is necessary to control the generation of the scale. Such deposition of various scales may cause corrosion of the pipe, and odor may be generated.

Accordingly, the main body 10 according to the present embodiment provides an example in which 0.5 to 3 parts by weight of cellulose acetate and 1 to 5 parts by weight of manganese oxide are further blended with respect to 100 parts by weight of the polyvinyl chloride resin.

The cellulose acetate is added as a hydrophilizing agent to control generation of scale by oil by hydrophilization. The reason for restricting the above range is that if the amount is less than the above range, its functionality can not be expected, and if it exceeds the above range, compatibility with the polymer is lowered.

On the other hand, even when hydrophilicity is imparted by adding cellulose acetate to the polymer, the scale due to the sludge can not be controlled. Generally, EPS and protein, which are colloidal materials forming sludge, have a weak negative charge due to the selective adsorption of anions, especially hydroxide ions, in the medium. In the present invention, manganese oxide is further added.

The manganese oxide exhibits a negative charge at a pH of 6 to 8 to generate sludge and repulsive force, so that the generation of scale due to sludge can be controlled. The reason for limiting the above-mentioned manganese oxide to the above range is that if it is below the above range, its functionality can not be expected. If it exceeds the above range, the negative charge is excessively exhibited and the scale due to the metal component can be caused by adsorption of the metal component. As shown in FIG.

On the other hand, in the process of manufacturing the main body 10 according to the above composition, hardening heat is generated. However, such hardening heat can cause microcracks in the tube. Such microcracks are a point at which the scale can be deposited, and also cause a decrease in durability.

Accordingly, the present invention provides an example in which the main body 10 further contains 0.5 to 1 part by weight of calcium nitrate hydrate and 0.5 to 1 part by weight of aluminum trioxide, based on 100 parts by weight of the polyvinyl chloride resin.

The calcium nitrate hydrate absorbs some of the curing heat generated in the mixing process of the composition, thereby lowering the curing heat as a whole to control various cracks.

The reason why the mixing ratio of the calcium nitrate hydrate is limited as described above is that when the amount of the calcium nitrate hydrate is less than 0.5 parts by weight, the hardening heat-reducing function is insufficient and when the amount is more than 1 part by weight, the calcium nitrate hydrate absorbs heat while absorbing moisture Which can further lower the heat of curing, but excessively absorbs moisture, resulting in occurrence of various cracks and the like.

Thus, in the present invention, aluminum hydrate is further added so as to further reduce the hardening heat while limiting the addition amount of the calcium nitrate hydrate as described above. Aluminum oxide is added so that the heat radiation function is expressed so that the curing heat is radiated to the outside. In the case of aluminum trioxide, it also has the function of blocking ultraviolet rays.

The main body 10 of the present embodiment having the above-described structure controls various scales and can control odors and corrosion caused by deposition of scales.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

10: Main body 20: Spiral hot plate
30: casing 40: power supply section
50:
100: fastening means 110: inlet
120: outlet 130:
140: channel 300: inner layer
310: outer layer 500: flow rate sensor
510: thermal sensor 520: comparative analysis module
530: Signal generation module 540: Communication module

Claims

A main body including an inlet and an outlet formed with fastening means for connecting with the water pipe and a flow space in which a water channel communicating with the inlet and the outlet are formed;
Heating means for forming a spiral heating plate along the longitudinal direction in the flow space of the main body so as to form the water channel in a spiral shape;
A casing enclosing the body so that the inlet and the outlet are exposed; And
And a power supply unit for applying power to the heating unit,
The main body includes:
10 to 15 parts by weight of a filler, 1 to 3 parts by weight of a lubricant, 1 to 3 parts by weight of a stabilizer, 5 to 10 parts by weight of an impact modifier, 1 to 5 parts by weight of an antibacterial agent, 1 to 5 parts by weight of aldohexose, 0.5 to 2 parts by weight of an antistatic agent, 0.5 to 3 parts by weight of cellulose acetate, 1 to 5 parts by weight of manganese oxide, 0.5 to 1 part by weight of calcium nitrate hydrate and 0.5 to 1 part by weight of aluminum trioxide. Electric water heater.

The method of claim 1, wherein
And a controller for controlling the power supply of the power supply unit.

3. The method of claim 2,
The control unit
A flow rate sensor mounted on the water channel, and a heat sensor mounted on the outlet,
The control unit generates a driving signal for driving the heating means by an output signal of the flow velocity sensor and selectively controls the input power of the heating means by an output signal of the heat sensing sensor when the driving signal is generated Electric water heater.

The method according to claim 1,
The casing
An inner layer made of glass wool insulation and an outer layer made of PVC laminated to the outer surface of the inner layer.

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