KR20080026143A - Electric instant hot water generator element with coated spiral heating wire - Google Patents

Abstract

The present invention relates to an electric instantaneous hot water generator element using a coated spiral heating wire, and a heater constituting a flow path therein together with a heater element employing a coating agent for preventing leakage and corrosion on the outer surface of the coil-type heating wire wound in a spiral shape. The housing can increase the heat transfer efficiency of the supplied hot water, increase the heating rate, and reduce the time required to reach the set temperature, thereby realizing the function of the instantaneous hot water generator that satisfies the function required by the product using the instant hot water. There is an effect that can provide convenience for joint use of products (bidet, cold, hot water dispenser, vending machine, etc.) that uses a small amount repeatedly.

In addition, unlike conventional heater housings that are designed to greatly change the direction of the flow path through which water flows, the heater housing according to the present invention generates a simple flow path, so that the increase in flow resistance does not increase so that water occurs when passing through the water heater. In addition to preventing the decrease in the flow rate, when the pump for pressurization is used, the capacity of the pump can be selected small, thereby increasing the material cost and providing the effect of reducing the pump noise during operation.

Description

ELECTRIC WATER GENERATION WATER GENERATION WITH COATED Spiral Heating Wires {ELECTRIC WATER HEATER ELEMENT USING COATED HELICAL HEATING WIRES}

The present invention relates to an element for instantaneous hot water supply, and more particularly, in an instantaneous hot water generator, the heating element installed in the heater housing is improved to improve the heating element for heating the fluid passing therethrough, and the water heater can be simply installed in the heater housing. It is designed to be applied to instantaneous hot water generators such as cold and hot water dispensers and cold and hot water purifiers, which are provided in common toilets, rest areas, etc., so that the common toilet can be used conveniently and conveniently. Electrical instant hot water generator element using a coated spiral heating wire.

In general, instantaneous hot water generators are installed and used in various living facilities (for example, bidets, cold, hot water purifiers, etc.) for the purpose of obtaining instant hot water at an appropriate temperature within a short time.

Most commonly used electric instantaneous hot water generators are made of a flow path using ceramic materials as insulation materials. In such a case, the ceramic-based material has a lower thermal conductivity than the metal, so that thermal efficiency is lowered. In particular, a predetermined time must elapse to increase the temperature of the fluid to a desired temperature.

In addition, in the instant hot water method as described above, only the heater element is used. In order for the heater element to function properly, the hot water is discharged in a state in which the hot water is heated to a temperature increased by the temperature of the use range after a predetermined time. Used.

Applied to the instantaneous hot water generator that has been used so far to obtain instant hot water, as shown in the accompanying Figure 1, which is installed in the heater housing 1, is made of a hollow tube tube (3), Inside the diameter of the tube tube 3, a heating element (hereinafter, referred to as a "heater element") is molded into a shape in which it is embedded. The heater element 2 is formed in a zigzag type for the purpose of forming a flat plate or widening the contact area for heat generation, and is manufactured in a structure in which the tube element 3 is provided in pairs in an arc shape.

The tube tube 3 is coupled to the heater housing 1 installed in the instantaneous hot water generator, and the terminal leading from the heater element 2 on the tube tube 3 side to apply current from the outside of the heater housing 1. It is composed of a structure connected to the connection terminal for.

The heater housing is formed with a heating space (1a) for heating the water secondary to the tube tube to be inserted and coupled, the heating space (1a) forms a flow path in accordance with the installation of the tube tube (3). . The water is discharged through the outlet 1b for discharging water from the heating space 1a.

The supply of water is heated through the heat generated by the heater element while passing through the inner diameter of the tube tube along the flow path provided from the main body of the instantaneous hot water generator (not shown in the figure), and the water passing through the tube tube is again heated Through the heating space inside the housing is discharged to the outlet provided on the heater housing side is a structure that can use the appropriate hot water.

In the structure as described above, in order to ensure sufficient heat transfer of the water passing through the inlet (3a) of the tube tube 3, the configuration of the flow passage through which the water is passed and the number of the heater element is installed to increase the progress of water By complicating the path, it is possible to obtain hot water for proper use by designing the structure to delay the time passing through the heater, but the following problems occur.

That is, the method of providing hot water in the above manner increases the pressure resistance of the pump as a way to solve this problem because the flow resistance of the water is increased to bring about a decrease in flow rate, this method takes a rather long time This caused the increase in pump capacity and the increase in noise during operation.

As a result, the conventional structure has a disadvantage that it is not suitable for applications such as bidet, cold, hot water purifier, etc. of the common toilet often used as a common use because the time for heating the fluid must be sufficiently passed.

The present invention is to solve the conventional problems as described above, in the instantaneous hot water generator, the heating element installed in the heater housing to improve the heating element for heating the fluid passing through it can be simply installed in the heater housing and provide hot water within a short time It is designed to be applied to instantaneous hot water generators such as electronic bidets of common toilets used by many people, cold and hot water dispensers, cold and hot water purifiers, etc., which can be used conveniently and conveniently. The purpose is.

According to the present invention for achieving the above object, the heater element is installed in the heater housing is provided in the inlet and outlet port for supplying water to heat the fluid supplied from one direction to provide hot water of the temperature required in the product heater element The heater element may be a coil type heating element made of any one of nickel (Ni) -chromium (Cr) -based, iron (Fe) -chromium (Cr) -based, or an alloy containing tungsten (W). While forming spirally as possible, the surface is coated with a coating material of an insulating material to prevent the occurrence of short circuit due to integrated contact with the fluid.

The present invention provides a heater housing constituting a flow path incorporating a heater element together with a heater element employing a coating agent for preventing short circuit and corrosion on the outer surface of a coil-type heating wire wound in a spiral shape, and increases heat transfer efficiency of hot water supplied thereto. By increasing the heating rate and reducing the time required to reach the set temperature, the function of the instantaneous hot water generator that satisfies the functions required by the product using instant hot water can be implemented, so that the product repeatedly using a small amount of use (bid, cold) , Water purifier, vending machine, etc.) can provide convenience for the common use.

In addition, unlike conventional heater housings designed to greatly change the direction of the flow path through which the water flows, the heater housing according to the present invention forms a simple flow path, so that the increase in flow resistance does not increase so that water occurs when passing through the water heater. In addition to preventing the decrease in the flow rate, when the pump for pressurization is used, the capacity of the pump can be selected small, thereby increasing the material cost and providing the effect of reducing the pump noise during operation.

Hereinafter, with reference to the accompanying Figures 2 to 6 according to the present invention in more detail.

2 is a perspective view illustrating a coil-type heating wire configured to have a constant radius of the spiral of the present invention, and FIG. 3 is a cross-sectional view showing a state in which the coil-type heating wire in FIG. 2 is applied to a heater housing, and FIG. FIG. 5 is a cross-sectional view illustrating a state in which a coil-type heating wire according to an embodiment is applied in a heater housing, FIG. 5 is a perspective view showing a spiral heating wire according to another embodiment according to the present invention, and FIG. It is sectional drawing which shows the state applied in the housing.

The present invention is installed in a heater housing (10) provided with an inlet (11) and an outlet (12) to which water is supplied to heat the fluid supplied from one direction to provide hot water at a temperature required for a product. In the heater element 20, the heater element 20 is any one of nickel (Ni) -chromium (Cr) series, iron (Fe) -chromium (Cr) series, or an alloy containing tungsten (W). The heating wire made of a material is wound in a spiral to form a coil, while the surface thereof is coated with a coating material 22 of an insulating material for preventing a short circuit caused by integrated contact with a fluid.

Both ends of the heater element 20 are connected to a connection terminal which is drawn out from the outside of the heater housing 10 to apply a current.

The heater housing 10 is cylindrical and has a stopper 10-1 and a packing P constituting the inlet 11 through which water is introduced, and the heater element 20 is sealed in a state in which the heater element 20 is accommodated therein. Structure.

For reference, the heater housing 10, the fluid is generally in contact with the heater element 20 when the flow rate of the amount used in the range in which the product to which the instant hot water generator is applied operates normally, where the outer diameter of the heater element The silver is formed to an inner diameter that does not contact the flow path, and is made of a synthetic resin material having heat resistance.

An end portion of the heating wire, which is the heater element 20 installed from the heater housing 10, is preferably treated to be drawn out of the heater housing 10.

An end of the heating wire drawn out from the heater housing 10 is connected to the connection terminal for applying a current in a condition that the coating 22 is not coated.

Meanwhile, as shown in FIG. 4, the heater element 20 has a structure in which a heating wire has a length in which two spirals of a spiral radius are large and small in the flow direction are alternately repeated in succession.

In addition, as shown in FIG. 5, the heater element 20 is divided into a first heating wire 20-1 and a second heating wire 20-2, but from one end of the second heating wire 20-2. ) Has a diameter of a radius relative to the diameter of the first heating wire 20-1, while the second heating wire is guided in the first heating wire to be combined in a concentric manner, and ends of the first heating wire and the second heating wire are combined. Is connected to be integrally installed so as to have one heating structure such that a current is conducted between the first heating wire and the second heating wire.

On the other hand, the coating agent 22 which is coated on the surface of the heater element 20, which is a spirally formed heating wire, may block a short circuit by coating a composition consisting of alumina (Al 2 O 3) containing silicon oxide (SiO 2) as a main component. Make sure

Alternatively, the coating may be adopted by adopting any one of parylene, which is made of a ceramic series or a thermoplastic conformal polymer series (Poly para xylene).

 It is preferable that the coating thickness of the coating agent 22 coated on the surface of the heater element 20 is coated with a thickness of 5 to 20 μm, in which the occurrence rate of the electric leakage is significantly low, and does not nourish the thermal conductivity.

Referring to the operation according to the installation of the heater element of the present invention having such a structure as follows.

First, the heater element is installed in an instantaneous hot water generator applied to a jointly used device such as a cold / hot water purifier used in a bidet of a common toilet that is used relatively often or in a rest area or restaurant. It is responsible for supplying by heating.

That is, a heating element, which is a heater element, is installed inside the instantaneous hot water generator that exits to the discharge port through the heater housing inlet provided so that the supplied water is heated. Instantly heat to supply proper hot water.

The heating element, which is the heater element, serves as a coating agent coated on the surface of the heating element, and is suitable for joint use through such a device which is frequently used by allowing the water to be warmed and discharged instantaneously without a short circuit.

The heater element has the same heating wire as the coil spring shape, and is simple to be inserted into the heater housing having a straight cylindrical shape, and is easy to manufacture, and has an internal component constituting the instantaneous water generator, that is, a heater housing having a straight flow path. In addition, there is an advantage in that the design according to the installation structure is easy.

In addition, when the fluid to be heated is electrically non-conductive, the heating wire may be used by directly contacting the fluid without insulation treatment. However, as described above, the electrically conductive fluid such as hot water may serve as a coating agent coated on the outer surface of the heating wire. Can be prevented from flowing into the fluid.

The coating agent coated on the heating wire, which is the heater element 20, is a material having electrical insulation performance without reducing thermal conductivity, and includes alumina (Al 2 O 3) containing silicon oxide (SiO 2) as a main component, or ceramic-based or thermoplastic Since any one of parylene, made of conformal polymer polymer series (Poly para xylene, etc.) is coated with a thickness of 5 to 20 μm that does not selectively affect thermal conductivity, the current flowing through the heating wire is leaked into the fluid. It can be prevented from being used to ensure safety during use.

In addition, the coating agent coated on the heating wire as described above can prevent the corrosion of the metal that may be caused by the heating wire is in direct contact with the fluid even when the fluid to be heated is not conductive.

As described above, the heater element coated with the coating agent may further improve the heat transfer effect by using a heating wire having a shape as shown in FIGS. 4 and 5 in addition to the heating wire having a coil shape as shown in FIG. 2.

4 is provided with a heater element 20 having a spiral length of two spirals large and small in the flow direction alternately and repeatedly formed in a required length, and installed in a flow path that becomes an inner diameter of the heater housing 10. Therefore, the water passing through the flow path is more suitable for the instantaneous heating of the supplied oil or water by widening the contact area with the heating wire.

The heater element 20 in FIG. 5 has an end portion of which the heating wires are arranged so as to form one heating wire by arranging the first heating wire 20-1 and the second heating wire 20-2 having different spiral diameters in the center. In addition, as described above, the contact area with water or fluid can be greatly expanded as described above, so that hot water at an appropriate temperature can be supplied by instantaneous heating.

As a result, the heater element 20 installed in the heater housing 10 having the straight flow path as described above has a straight flow path as in the coil spring shape, unlike the existing flow path in which water passing therethrough is complicated. By installing the formed heating wire, the heat transfer efficiency and heat transfer speed generated inside the flow path can be relatively increased.

This is because the water passing through the inlet 11 of the heater housing 10 is in contact with the heating element which is the heater element 20 in a coil shape, and heat transfer is performed, and thus, due to the shape of the heating element wound in a spiral, Since the flow becomes a turbulent state in which the flow is severely flowed inside, it is possible to make hot water at a proper temperature to be used within a relatively short time and discharge it as the discharge port 12.

More specifically, the water flowing inside the heater housing has a large area in contact with the heating wire and collides with the heating wire to become a turbulent flow state, so that the heating wire can obtain a sufficient heat transfer effect even when the inner space of the heater housing is straight. Will be.

Therefore, the advantage of the structural improvement of the heater element and the heater housing according to the present invention, by applying a complex flow path designed to increase the thermal efficiency as in the conventional can suppress the phenomenon that the flow resistance increases, which is the hot water from time to time There is an advantage that the capacity of the pump used to flow the fluid in the product to be used does not have to be larger than necessary, and this point is designed according to the installation of components for the product (bidet, cold, hot water purifier, vending machine, etc.). Space is gained.

1 is a cross-sectional view schematically showing a conventional tubular heater element,

Figure 2 is a perspective view showing a coil-type heating wire configured to have a constant radius of the inventors spiral,

3 is a cross-sectional view showing a state in which the coil-type heating line in FIG. 2 is applied to a heater housing;

Figure 4 is a cross-sectional view showing a state in which the coil-type heating wire of the embodiment according to the present invention is applied in the heater housing,

5 is a perspective view showing a spiral heating wire of another embodiment according to the present invention;

6 is a cross-sectional view showing a state in which the spiral heating wire in FIG. 5 is applied to the heater housing.

<Explanation of Signs of Major Parts of Drawings>

10: heater housing 11: inlet

12: discharge port 20: heater element

20-1: First heating element 20-2: Second heating element

22: coating agent

Claims (6)

Heater element 20 for instantaneous hot water generator, which is installed in a heater housing 10 provided with an inlet 11 and an outlet 12 through which water is supplied, to provide a hot water of a temperature required by a product by heating a fluid supplied from one direction. ), The heater element 20 is a coil type heating element made of any one material of nickel (Ni) -chromium (Cr) series, iron (Fe) -chromium (Cr) series, or an alloy containing tungsten (W). An electric instantaneous warm water generator element using a coated spiral heating wire, characterized in that the spiral winding as possible, while the surface is coated with a coating material of insulating material 22 to prevent the occurrence of short circuit due to integrated contact with the fluid. 2. The electric moment using the coated spiral heating wire according to claim 1, wherein the heater element (20) is formed of a heating wire having a required length by alternately repeating two spirals having a large and small spiral radius in a flow direction. Hot water generator element. According to claim 1, wherein the heater element 20 is divided into the first heating wire 20-1 and the second heating wire 20-2, the diameter of the second heating wire 20-2 from one end is the first The second heating wire is guided in the first heating wire to be combined concentrically, and the ends of the first heating wire and the second heating wire are joined together so as to be integral. An electric instantaneous hot water generator element using a coated spiral heating wire, wherein a current causes the first heating wire and the second heating wire to conduct. 2. The instantaneous hot water generator element using a coated spiral heating wire according to claim 1, wherein the coating agent (22) is composed mainly of alumina (Al2O3) containing silicon oxide (SiO2). The method of claim 1, wherein the coating agent 22 is an electrical moment using a coated spiral heating wire, characterized in that any one of a series of parylene (Parylene) made of a ceramic series or a thermoplastic conformal polymer polymer series (Poly para xylene, etc.). Hot water generator element. 6. The instantaneous hot water generator element according to any one of claims 4 to 5, wherein the coating agent (22) is coated with a thickness of 5 to 20 [mu] m that does not nourish thermal conduction.

Images