KR101552643B1 - Heating device for instant warm water - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus for instantaneous hot water supply, An intervening plate having a flow path formed inside the front surface so as to communicate with an inlet port and an outlet port of the front plate and having a partition wall formed on the opposite surface to correspond to the width of the flow path; A rear plate closing said intervention plate; And a heater provided on both surfaces of the front plate and the rear plate.
According to the present invention, partition walls corresponding to the flow path are formed on the opposite surface of the plate on which the flow path is formed, thereby preventing occurrence of warping due to heat, minimizing the interface heat resistance by using the suscep plate as a heating plate, Since the glassy insulating layer of the plate provided for the heat sink is formed by combining one or more of ceramic coating, Teflon coating and silicone coating, the manufacturing cost is low and the heating plate is prevented from being warped by drawing the heating plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a heating device for instantaneous hot water heating,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for instantaneous hot water, and more particularly, to a heating device for instantaneous hot water supply to an electronic product such as a water purifier to provide heat to instantaneous hot water.

2. Description of the Related Art In recent years, as the size of electronic products has been gradually reduced, various components accommodated therein have also been required to be reduced in size.

As the size of water purifiers that have been released recently is getting smaller, the function is the same as existing ones, or the demand is rising due to superiority of existing ones. In such a water purifier, a water storage tank for storing water is usually provided, and a heater is provided in the water storage tank so that the stored water can be heated. Since the size of such a heater is influenced by the size of the electronic product, a thin heater is applied when the size is taken into consideration.

Techniques relating to such heaters have been proposed in Utility Model Registration No. 0364824 and Patent No. 0624568.

Hereinafter, the structure of the instant hot water apparatus disclosed in the Utility Model Registration No. 0364824 and the Patent No. 0624568 as the prior art will be briefly described.

FIG. 1 is an exploded perspective view of the structure of the instantaneous hot water apparatus according to Prior Art 1. FIG. 1, the instantaneous hot water apparatus includes a casing 11 provided with a raw water inlet 13 and a hot water outlet 14; A cover (12) covering the upper surface of the casing (11); A heat exchange part (20, 21) formed on an inner wall of each of the casing (11) and the cover (12) and having at least one circular curved part (20a, 21a); A plate type ceramic heater 40 composed of an alumina substrate 41 interposed between the casing side heat exchange portion 20 and the cover side heat exchange portion 21 and a heating element 42 printed on both surfaces of the alumina substrate 41 ); And a control unit 30 including a thermistor 32 as a temperature control sensor and a bimetal 31 connected to the electrode terminal 42b of the flat plate type ceramic heater 40 to control power supply.

However, in the conventional flat plate type ceramic heater 40 according to the prior art 1, the control of the interface thermal resistance according to the thickness control of the alumina substrate is limited.

FIG. 2 is a cross-sectional view of the instantaneous hot water device for a scrubber according to Prior Art 2. As shown in FIG. Referring to FIG. 2, the instantaneous hot water device for the scrubber of the prior art 2 includes a water inlet 10 and a water outlet 20, and a housing 100 ); A heat exchange unit (30) having a heating path to heat exchange the fluid supplied to the inlet (10); A heater (200) provided in the heat exchanging part (30) for instantaneous heat exchange of the fluid introduced into the inlet port; And a mixing unit 40 for uniformly mixing the fluid that has been heat exchanged in the heat exchanging unit 30 and laminar flowed.

However, in the instantaneous hot water apparatus for the cleaner according to the prior art 2, a ruthenium-based heating element is applied to the heater, so that the thermal resistance at the bonding interface between the heating element and the lead wire is large.

In addition, although not shown in the drawings, a heating element was fabricated by coating an insulator on a heating plate and patterning carbon powder thereon in a conventional planar heater. However, when the curing process of the heating element or the like is repeatedly performed, the central portion of the heating plate is warped due to a decrease in durability, thereby lowering the productivity and increasing the unit price.

Yr 0364824 Y1 KR 0624568 B1

DISCLOSURE OF THE INVENTION An object of the present invention is to solve the problems of the prior art as described above, and it is an object of the present invention to provide a heat exchanger, The interface heat resistance can be minimized and the glassy insulating layer of the plate provided for mounting the heater can be made of any one of ceramic coating, teflon coating and silicone coating or a combination of two or more thereof, And to provide a heating device for instantaneous hot water for preventing warping of the heating plate by drawing.

According to an aspect of the present invention for achieving the above-mentioned object, the present invention provides an air conditioner comprising: a front plate having an inlet port and an outlet port; An intervening plate having a flow path formed inside the front surface so as to communicate with an inlet port and an outlet port of the front plate and having a partition wall formed on the opposite surface to correspond to the width of the flow path; A rear plate closing said intervention plate; And a heater provided on both surfaces of the front plate and the rear plate.

Further, the present invention provides an air conditioning apparatus comprising: a front plate having an inlet and an outlet; An intervening plate having a channel formed therein to communicate with an inlet port and an outlet port of the front plate and a partition wall formed on the opposite surface of the channel plate to correspond to the width of the channel; A rear plate having the intervention plate closed and formed on the finish surface by drawing to communicate with the flow passage; And a heater provided on a surface of the rear plate.

According to another aspect of the present invention, there is provided an air conditioner comprising: an inlet pipe connected to an inlet port and a discharge pipe connected to an outlet port; a flow path formed on the back surface to communicate with the inlet pipe and the outlet pipe; plate; An intervening plate closing the flow path of the front plate; A rear plate which is in close contact with the intervention plate and has a flow path formed on the inner wall surface to correspond to the flow path of the front plate and a partition wall formed on the opposite surface of the flow plate, And a heater interposed between the front plate and the intervening plate and between the intervening plate and the rear plate, respectively.

In addition, the flow path in the present invention can be applied to a silicon or plastic material.

In addition, the flow path in the present invention may be formed to have a narrower width from the inlet side to the outlet side.

In addition, a vitreous insulating layer may be formed on both surfaces of the front plate and the rear plate in the present invention.

In addition, a glassy insulating layer may be formed on the outer surface of the rear plate in the present invention.

In addition, a glassy insulating layer may be formed on both sides of the rear plate in the present invention.

The heater included in the glassy insulating layer of the present invention may include a plurality of electrodes metallized on the surface of the glassy insulating layer; And a heating element for patterning the plurality of electrodes to have a set pattern.

In addition, the glassy insulating layer in the present invention may be formed of one or more of ceramic coating, Teflon coating, and silicon coating.

According to the present invention, partition walls corresponding to the flow path are formed on the opposite surface of the plate on which the flow path is formed, thereby preventing occurrence of warping due to heat, minimizing the interface heat resistance by using the suscep plate as a heating plate, Since the glassy insulating layer of the plate provided for the heat sink is formed by combining one or more of ceramic coating, Teflon coating and silicone coating, the manufacturing cost is low and the heating plate is prevented from being warped by drawing the heating plate.

1 is an exploded perspective view of the instantaneous hot water apparatus according to the prior art 1. FIG.
2 is a cross-sectional view of an instantaneous hot water device for a scrubber in accordance with Prior Art 2. Fig.
3 is an exploded perspective view showing a structure of a heating apparatus for instantaneous hot water according to the first embodiment of the present invention.
4 is a plan view and a bottom view showing the structure of the intervening plate in the heating apparatus for instantaneous hot water according to the first embodiment of the present invention.
5 is a plan view showing the structure of a heater in a heating apparatus for instantaneous hot water according to the first embodiment of the present invention.
6 is a side cross-sectional view showing the structure of a heater in a heating apparatus for instantaneous hot water according to the first embodiment of the present invention.
7 is an exploded perspective view showing a structure of a heating apparatus for instantaneous hot water in the second embodiment according to the present invention.
8 is an exploded perspective view showing the structure of a heating apparatus for instantaneous hot water according to the third embodiment of the present invention.

The terms or words used in the present specification and claims are intended to mean that the inventive concept of the present invention is in accordance with the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain its invention in the best way Should be interpreted as a concept.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the term " part "in the description means a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the structure of an embodiment of a heating apparatus for instantaneous hot water according to the present invention will be described in detail with reference to the drawings.

<First Example  >

FIG. 3 is an exploded perspective view showing the structure of a heating apparatus for instantaneous hot water according to the first embodiment of the present invention. FIG. 4 is a schematic view of a heating apparatus for instantaneous hot water according to the first embodiment of the present invention. FIG. 5 is a plan view of a heater in the heating apparatus for instantaneous hot water according to the first embodiment of the present invention, and FIG. 6 is a plan view of the instantaneous hot water of the first embodiment according to the present invention. The structure of the heater in the heating device for heating is shown in side sectional view.

The heating apparatus 100 for instantaneous hot water according to the first embodiment of the present invention is a double-sided heating type and comprises a front plate 110, an intervening plate 120, a rear plate 130, Wherein the heater 140 and the front plate 110 and the intervention plate 120 are in close contact with the rear plate 130 and the heater 140, Welded, bolted or the like. Here, the double-sided heating type means that the heaters 140 are mounted on the front plate 110 and the rear plate 130, respectively, and heat is generated on both sides of the intervention plate 120.

However, the present invention is not limited to a bidet, an electric iron, a humidifier, a steam cleaner, a water heater, a foot bath, a dish washer, a drum, (Heat mats), a beauty appliance, a small nozzle device, a semiconductor processing device, a printer, and the like, such as a household appliance including a washing machine, a rice cooker, a fryer, a coffee mate, an electric kettle, a fermenter, Industrial heater, and the like.

The front plate 110 is a heating plate and has an inlet port 112 through which the inlet pipe communicates and an outlet port 114 through which the outlet pipe communicates with the outlet pipe. The front plate 110 has a glass frit ) Insulating layer is formed.

At this time, the front plate 110 is a stainless steel (SUS) plate, but the present invention is not limited thereto. For example, the front plate 110 may be made of ceramic, aluminum, or high temperature glass. Here, when the front plate 110 is a high-temperature glass, a separate glass-insulation layer is not required.

The glassy insulating layer is an insulating layer formed on the surface of the front plate 110 by a coating process and includes a coating method including a ceramic coating, a Teflon coating, and a silicon coating , Or may be formed by laminating in multiple layers by various coating methods. At this time, the glassy insulating layer is preferably printed in a thickness of 1 to 100 탆, and a thin layer is formed on the magnetic surface by a glaze.

The inlet plate 120 is provided with an inlet pipe and a discharge pipe on the front surface so as to pass through the inlet 112 and the outlet 114 of the front plate 110 respectively and a flow passage 122 is formed on the rear surface, The heated water is heated by the heater 140, and then the water is allowed to be discharged through the discharge pipe. At this time, the flow path 122 is formed in the zigzag direction. Furthermore, although the flow path 122 is exemplified as a zigzag flow path, it can be formed as an empty space without a pattern.

The intervening plate 120 may be formed on the opposite surface of the flow path 122 on which the flow path 122 is formed through a plurality of grooves so as to correspond to the flow path 122 to prevent heat distortion.

The flow path 122 and the partition wall 124 are gradually narrowed in the direction from the inlet side connected to the inlet pipe to the outlet side connected to the outlet pipe so as to exhibit the Venturi effect by the Bernoulli principle, And the water vapor is rapidly discharged to the discharge pipe. This is a factor directly related to the safety of the user, and the ratio of the water supply side to the water supply side is maintained at 30 to 70% Is optimal for maintaining good performance. If the ratio is too small, the discharge amount due to decompression is too large, and if the ratio is too large, the discharge of water vapor can not be prevented.

Here, the material of the flow path 122 may be silicon or plastic material. If the flow path is formed more than when it is in an empty space, water flow phenomenon of the outflow is prevented, .

In this way, the flow path 122 formed in the intervention plate 120 is sealed by the rear plate 130. Further, the intervention plate 120 is formed of a material such as silicon or Teflon.

The rear plate 130 is a heating plate for finishing the intervening plate 120. A glassy insulating layer is formed on an outer side surface on which the heater 140 is installed and the structure and function of the glassy insulating layer are the same as the glassy insulating layer A detailed description thereof will be omitted.

In this case, the rear plate 130 is a SUS plate similar to the front plate 110, but the present invention is not limited thereto. For example, the rear plate 130 may be made of ceramic, aluminum, or high temperature glass. Here, if the rear plate 130 is also a high-temperature glass, a separate glass-insulation layer is not required.

The heater 140 is a planar heating element and is provided on the outer surface of the front plate 110 and the outer surface of the rear plate 130 to provide a heat source for heating water flowing into the flow path 122 of the intervention plate 120 And includes an electrode 142 and a heating body 144.

That is, the heater 140 is a metal heater, and the degree of integration (cm 2) per unit area is suitably in the range of 40 to 300 W. Below that level is a limiting factor in achieving miniaturization. If it is above that level, it can be manufactured, but the product will be lost due to the limit of heat discharge ability. Likely , The possibility of deformation during heater start due to the accumulation of high heat also increases, which may also affect safety.

The electrodes 142 are formed so as to be spaced on both sides of the surface of the coated glassy insulating layer and may be formed of any one of metals such as silver (Ag), tungsten (W), and molybdenum (Mo) And is metallized by an alloy.

Here, the electrode 142 may be patterned symmetrically or asymmetrically depending on the shape of the front plate 110 as a heating plate or interference with neighboring components.

Further, at one end of the adjacent electrode 142, a power supply terminal 144 is mounted so that the tip of the cable C is connected through soldering for power supply.

Although not shown in the figure, a current regulator may be provided to regulate the temperature of the heating element 144 by adjusting the amount of external power input through the power supply cable C. The current regulator is electrically connected to the cable C whose one end is electrically connected to the cable C and the other end is connected to the power supply terminal 146 of the electrode 142.

The heating element 144 is formed of Ag-pd (silver-lead) to electrically connect the neighboring electrodes 142, and is not limited to the material described above, and can be changed to a material having excellent heat generation rate Do. Here, the heating elements 142 are provided in a straight line shape with a predetermined interval, but curves, oblique lines, and at least two line shapes may be used in combination. In this way, since a plurality of the heating elements 144 are independently provided for each set interval, even if one of the heating elements 144 is disconnected, the remaining heating elements 144 can function.

The front plate 110 and the rear plate 130 may be provided with a heater 140 on the glassy insulating layer and then may be finished with a finishing insulation layer. And the outer surface of the rear plate 130, detailed description thereof will be omitted. Here, the closed insulating layer prevents damage due to physical external force and contact with air in addition to electrical insulating performance, thereby preventing oxidation.

Meanwhile, the heating apparatus 100 for instantaneous hot water according to the present embodiment may further include a bimetal unit (not shown). The bimetallic unit is electrically connected to the heater 140 through a power supply cable C so as to sense the overheating of the water by the temperature of the heater 140 or the malfunction of the heater 140, And detects whether the temperature is lowered to a set temperature or lower. Particularly, the bimetal unit is mounted on the outer surface of the front plate 110 through a pair of brackets, one of which is a bimetal for preventing overheating, and the other is a bimetal for preventing water temperature reduction. The bimetal prevents the water from being heated above a preset temperature when the water flowing in the flow path 122 of the intervening plate 120 is heated. The bimetal for preventing water temperature reduction functions to sense whether the temperature of the water which has been heated inside the flow path 122 of the intervention plate 120 is cooled down below the set temperature. The bimetal prevents the heater 140 from operating when the water temperature is detected to be higher than a preset temperature. After the operation of the heater 140 is stopped, the bimetal for preventing water temperature reduction is heated. When the temperature of the water is detected to be below the predetermined temperature, the heater 140 is restarted.

In the meantime, when the heating device 100 for instantaneous hot water according to the present invention is applied to a bidet, it is not necessary to limit the material of the flow path and the intervening plate to silicon, and the size of the heater can be adjusted.

Therefore, a method of operating the heating apparatus 100 for instantaneous hot water according to the first embodiment of the present invention will be described as follows. First, water flows in through the inlet pipe of the intervening plate 120. The inflow water flows through the flow path 122 of the intervention plate 120 toward the discharge pipe of the front plate 110. Thereafter, the water is heated by the respective heaters 140 installed on the outer surface of the front plate 110 and the rear plate 130 while flowing toward the discharge pipe.

On the other hand, the water is sensed by the bimetal unit mounted on the outer wall of the front plate 110. Among the bimetallic units, the bimetal for preventing overheating senses whether the incoming water is heated to a set temperature or more when the heated water is heated. The overheat protection bimetal stops the operation of the heater 140 so that the water is no longer heated when it detects that the water is heated to a set temperature or more. When the operation of the heater 140 is stopped, the heated water is cooled. At this time, the bimetal unit of the bimetallic unit detects whether the temperature of the water falls below the predetermined temperature. When the temperature of the water drops below the predetermined temperature, the bimetal for water temperature reduction prevention restarts the heater 140 to heat the water again.

The method of manufacturing the heater 140 of the present invention includes a front plate, an intervening plate, a rear plate preparing step, a glassy insulating layer forming step, an electrode forming step, a heating element soldering step, a glassy insulating layer finishing step and a bonding step.

The front and rear plate preparing steps are a step of preparing the front and rear plates 110 and 130, which are heating plates in the form of a thin plate made of stainless steel (SUS), by machining or the like in a set size. The intervening plate preparing step is a step of preparing the intervening plate 120 having the flow path 122 formed of a material such as silicon.

In the step of forming the glassy insulating layer, a glassy insulating layer is formed by coating the surfaces of the front and rear plates 110 and 130. The ceramic coating, the Teflon coating, and the silicon coating ), Or the like, or may be carried out by laminating in multiple layers by various coating methods. At this time, the glassy insulating layer is preferably printed in a thickness of 1 to 100 탆, and a thin layer is formed on the magnetic surface by a glaze.

The electrode forming step is a step of forming a plurality of spaced apart electrodes 142 by metallizing each of the outer walls of the coated front and rear plates 110 and 130.

That is, in the electrode forming step, a pair of electrodes 142 separated and metallized by a metal such as silver (Ag), tungsten (W), and molybdenum (Mo) .

At this time, in the electrode formation step, the electrode 142 may be patterned symmetrically or asymmetrically depending on the shape of the front and rear plates 110 and 130, or interference with neighboring components. Although not shown in the drawing, a power supply terminal mounting step may be performed after the electrode forming step. In the power supply terminal mounting step, a cable (C) is connected to one end of the adjacent electrode 142 And the power supply terminal 146 is mounted on the printed circuit board.

In the soldering step of the heating element, the surfaces of the pair of electrodes 142 spaced from both sides of the surface of the glassy insulating layer are connected by a heating element 144 formed by Ag-pd (silver-lead compound) or the like, (soldering) process.

Here, the soldering step of the heating element may be patterned symmetrically or asymmetrically depending on the shape of the electrode 142 or interference with neighboring components.

The glassy insulating layer finishing step is a step of coating the electrode 142 and the heating body 144 formed on the surface of the glassy insulating layer by the same coating method as the glassy insulating layer after finishing the heating element soldering step. That is, in the finishing step of the glassy insulating layer, damage due to a physical external force and contact with air are prevented in addition to electrical insulation performance through the finishing insulation layer, thereby preventing oxidation.

The joining step is performed by welding or bolting the heater 140, the front plate 110, the intervention plate 120, the rear plate 130, and the heater 140 in close contact with each other .

<2nd Example  >

Fig. 6 is an exploded perspective view of the structure of a heating apparatus for instantaneous water heating according to the second embodiment of the present invention.

The heating apparatus 200 for instantaneous hot water according to the second embodiment of the present invention is of a single-sided heating type and includes a front plate 210, an intervening plate 220, a rear plate 230, The front plate 210, the intervention plate 220, the rear plate 230, and the heater 240 are fastened together by welding or bolts in a state in which the front plate 210, the rear plate 230, and the heater 240 are closely contacted. Here, the single-sided heating type means that the heater 240 is mounted on the rear plate 230 and generates heat in the cross-section of the intervention plate 120.

The object to which the heating device 200 for instantaneous hot water according to the present invention is applied is the same as that in the previous embodiment, and thus a detailed description thereof will be omitted.

The front plate 210 includes an inlet 212 through which the inlet pipe communicates and an outlet 214 through which the outlet pipe communicates with the outlet pipe. The front plate 210 is formed of plastic or metal.

The intervening plate 220 is provided on the front surface of the front plate 210 so as to pass through the inlet 212 and the outlet 214 of the front plate 210. A flow passage 222 is formed on the rear surface of the inlet plate 220, The heated water is heated by the heater 240, and then water is allowed to be discharged through the discharge pipe. At this time, the flow path 222 is formed in the zigzag direction. Furthermore, although the flow path 222 is illustrated as being formed in a zigzag shape, it may be formed as an empty space without a pattern.

The intervening plate 220 may be formed with a plurality of grooves 224 corresponding to the flow path 222 on the opposite surface on which the flow path 222 is formed to prevent heat distortion.

The flow path 222 and the partition wall 224 are gradually narrowed in the direction from the inlet side connected to the inlet pipe to the outlet side connected to the outlet pipe and the Venturi effect by the Bernoulli principle is generated, The flow of the steam is accelerated toward the outflow side so that the steam is quickly discharged to the discharge pipe and the vaporized water vapor is prevented from being discharged at a time. This is a factor that directly affects the safety of the actual user, and it is best to keep the ratio of the outgoing side to 30% to 70% in comparison with the intake side in order to maintain a good performance. If the ratio is too small, the discharge amount due to decompression is too large, and if the ratio is too large, the discharge of water vapor can not be prevented.

In this way, the flow path 222 formed in the thickness direction of the intervention plate 220 is sealed by the front plate 210 and the rear plate 230, which are in close contact with each other. Furthermore, the interposing plate 220 may be formed of a material such as silicon or Teflon.

Meanwhile, the interposing plate 220 has the same structure as the interposing plate 120 of the first embodiment.

The rear plate 230 is a heating plate for finishing the intervening plate 220. The rear plate 230 is formed with a glassy insulating layer on the outer surface on which the heater 240 is installed and the finishing of the intervening plate 220, (232) so as to communicate with the flow path (222) formed in the intervention plate (220) in the thickness direction.

Meanwhile, although the rear plate 230 is illustrated as being formed by the drawing 232 in the direction of the finish surface of the intervention plate 220, it may not be formed. Here, the drawing 232 is formed so as to increase the amount of water stored therein.

At this time, the rear plate 230 is a thin plate type SUS plate having a drawing 232 on one side, but the present invention is not limited thereto, and it is possible to change the rear plate 230 to ceramic, aluminum, high temperature glass, or the like. Here, when the rear plate 230 is a high-temperature glass, a separate glass-insulation layer is not required.

The glassy insulating layer is an insulating layer formed on the outer wall surface of the rear plate 230 by coating treatment, and may be formed by combining one or more of coating methods including a ceramic coating, a Teflon coating, a silicone coating, Or may be formed by laminating multiple layers by various coating methods. At this time, the glassy insulating layer is preferably printed in a thickness of 1 to 100 탆, and a thin layer is formed on the magnetic surface by a glaze.

When the drawing 232 is formed on one side of the rear plate 230, the rear plate 230 prevents the plate from being warped even in a high temperature environment exposed during the pattern formation of the heater 240, thereby increasing the productivity and improving the safety and reliability of the product. There is an advantage that can be made. The rear plate 230 can be manufactured by forming a pattern on a high-temperature glass instead of a SUS plate.

The heater 240 is a planar heating element and is provided on the outer surface of the rear plate 230 to provide a heat source for heating water flowing into the flow path 222 of the intervening plate 220, (244). At this time, the electrode 242 and the heating element 244 have the same structure and function as those of the previous embodiment, and thus their detailed description is omitted.

That is, the heater 240 is a metal heater, and the degree of integration (cm 2) per unit area is suitably in the range of 40 to 300 W. Below that level is a limiting factor in achieving miniaturization. If it is above that level, it can be manufactured, but the product will be lost due to the limit of heat discharge ability. Likely , The possibility of deformation during heater start due to the accumulation of high heat also increases, which may also affect safety.

A current regulator for regulating the temperature of the heating element 244 may also be provided. The current regulator has the same structure and function as those of the previous embodiment, and therefore, detailed description thereof will be omitted.

In the heating device 200 for instantaneous hot water, a bimetal unit (not shown in the drawing) may be connected to the rear plate 230, and a heater 240 may be installed on the glass plate, And the finish insulating layer and the bimetal unit have the same structure and function as those of the previous embodiment, and thus detailed description thereof will be omitted.

Therefore, a method of operating the heating apparatus 200 for instantaneous hot water according to the second embodiment of the present invention will be described as follows. First, water flows in through the inlet pipe of the intervening plate 220. The inflow water flows toward the discharge pipe of the intervention plate 220 through the flow passage 222 of the intervention plate 220 and the drawing 232 portion of the rear plate 230. The water is heated by the heater 240 installed on the outer surface of the rear plate 230 while flowing toward the discharge pipe.

On the other hand, the water is sensed by the bimetal unit mounted on the outer wall of the front plate 210. Among the bimetallic units, the bimetal for preventing overheating senses whether the incoming water is heated to a set temperature or more when the heated water is heated. The overheat protection bimetal stops the operation of the heater 240 so that the water is no longer heated. When the operation of the heater 240 is stopped, the heated water is cooled. At this time, the bimetal unit of the bimetallic unit detects whether the temperature of the water falls below the set temperature. When the temperature of the water drops below the set temperature, the bimetal prevents the water temperature from being reduced. The heater 240 is restarted to heat the water again.

<Third Example  >

Fig. 7 is an exploded perspective view showing a structure of a heating apparatus for instantaneous hot water according to the third embodiment of the present invention.

The heating device 300 for instantaneous hot water according to the third embodiment of the present invention is an internal heating type and includes a front plate 310, an intervening plate 320, a rear plate 330, And the heater 340 and the heater 340 and the intervening plate 320. The heater 340 and the rear plate 330 are in close contact with each other in a state in which the front plate 310, Welded, bolted or the like. Here, the internal heating type is a type in which the heater is mounted on the front plate 310, starting from the intervening plate 320, unlike the double-sided heating type provided on the front wall of the front plate and the external wall of the rear plate, And the rear plate 330 to generate heat on both sides of the intervention plate 320. [

Since the object to which the heating device 300 for instantaneous hot water according to the present invention is applied is the same as in the previous embodiment, detailed description is omitted.

The front plate 310 is formed at both ends of an inlet pipe and a discharge pipe, and is made of plastic, metal, silicone, or Teflon. Further, the front plate 310 is formed therein with a flow passage 316 communicating with the inlet pipe and the discharge pipe on the inner wall contacting the interposition plate 320.

On the other hand, the front plate 310 is formed with a plurality of grooves through the grooves 318 corresponding to the flow path 316 on the opposite surface on which the flow path 316 is formed, thereby preventing heat distortion.

The passage 316 and the partition 318 are gradually narrowed toward the outlet side connected to the discharge pipe at the inlet side connected to the inlet pipe, thereby exhibiting the Venturi effect by the Bernoulli principle, The flow of the steam is accelerated toward the outflow side so that the steam is quickly discharged to the discharge pipe and the vaporized water vapor is prevented from being discharged at a time. This is a factor that directly affects the safety of the actual user, and it is best to keep the ratio of the outgoing side to 30% to 70% in comparison with the intake side in order to maintain a good performance. If the ratio is too small, the discharge amount due to decompression is too large, and if the ratio is too large, the discharge of water vapor can not be prevented.

At this time, the flow path 316 is formed in the zigzag direction, and is partially formed in the thickness direction of the front plate 310 to maintain a groove shape. Furthermore, although the flow path 316 is illustrated as a zigzag flow path, it can be formed as a blank space without a pattern.

That is, in the front plate 310, a flow path 316 communicating with the inflow pipe and the discharge pipe is formed on the inner wall so that the water introduced through the inflow pipe is heated by the heater 340 and then discharged through the discharge pipe Let the water flow.

In this way, the front plate 310 is sealed by an intervening plate 320 in which a channel 316 formed in a groove shape is closely attached.

The intervening plate 320 is in close contact with the front plate 310 and a glassy insulating layer is formed on both sides where the heaters 340 are installed.

At this time, the intervening plate 320 is a stainless steel plate. However, the intervening plate 320 may be made of silicon, Teflon, ceramic, aluminum, or high-temperature glass. Here, when the intervention plate 320 is a high-temperature glass, a separate glass-insulation layer is not required.

The glassy insulating layer is an insulating layer formed by coating treatment on both surfaces of the intervening plate 320. The glassy insulating layer may be formed by combining one or more coating methods including a ceramic coating, a Teflon coating, a silicone coating, Or by laminating them in a multilayer structure. At this time, the glassy insulating layer is preferably printed in a thickness of 1 to 100 탆, and a thin layer is formed on the magnetic surface by a glaze.

The rear plate 330 is a plate for finishing the intervention plate 320, and is made of plastic, metal, silicon, or Teflon. Further, the rear plate 330 is formed with a channel 332 in the form of a groove on the inner wall contacting the interposition plate 320. An inlet port and an outlet port may be formed in the rear plate 330 so that the flow path 332 does not communicate with or communicate with the flow path 316 of the front plate 310.

On the other hand, the rear plate 330 is formed with a plurality of grooves through the grooves 334 on the opposite side of the flow path 316 to prevent heat distortion.

The flow path 322 and the partition 334 are formed to be gradually wider from the inlet pipe toward the outlet pipe, so that the flow rate of the hot water discharged through the outlet pipe can be increased with respect to the inflow amount.

In other words, when the flow path 332 formed in the rear plate 330 communicates with the flow path 316 of the front plate 310, the water introduced through the inlet pipe of the front plate 310 flows through the front and rear plates 310 When the flow path 332 formed in the rear plate 330 does not communicate with the flow path 316 of the front plate 310, the front plate 310 is heated while moving along the flow paths 316 and 332 of the front plate 310, Is heated while moving along the flow path 316 of the front plate 310. In addition, when the flow path 332 formed in the rear plate 330 does not communicate with the flow path 316 of the front plate 310, water not discharged into the flow path 332 is stored, 340 to transmit heat to the water moving through the flow path 316 of the front plate 310 through the thermoelectric development. In order for the flow path 332 formed in the rear plate 330 to communicate with the flow path 316 of the front plate 310, a hole communicating with the inlet pipe and the discharge pipe of the front plate 310 is formed in the intervening plate 320 Should be formed through.

In this case, the water passing through the internal flow path 332, separately from the internal flow path 316 of the front plate 310, is supplied to the rear plate 330 of the other embodiment, And the opening plate 320 is not formed with a hole communicating with the internal flow path 316 of the front plate 310. [

The heater 340 is an area heating element and is installed between the front plate 310 and the intervention plate 320 and between the intervention plate 320 and the rear plate 330 to provide a flow path 316 Or the water flowing to the flow paths 316 and 332 of the front and rear plates 310 and 330. [ At this time, the heater 340 includes an electrode 342 and a heating element 344, and the electrode 342 and the heating element 344 have the same structure and function as those of the previous embodiment, and a detailed description thereof will be omitted.

That is, the heater 340 is a metal heater, and the degree of integration (cm 2) per unit area is suitably 40 to 300 W. Below that level is a limiting factor in achieving miniaturization. If it is above that level, it can be manufactured, but the product will be lost due to the limit of heat discharge ability. Likely , The possibility of deformation during heater start due to the accumulation of high heat also increases, which may also affect safety.

A current regulator for regulating the temperature of the heating element 344 may also be provided. The current regulator has the same structure and function as those of the previous embodiment, and therefore, a detailed description thereof will be omitted.

The heating device 300 for instantaneous hot water may further include a bimetal unit (not shown), and the finish insulating layer and the bimetal unit have the same structure and function as those of the previous embodiment, Is omitted.

The front plate 310 and the rear plate 330 have the same structure as the intervention plate of the previous embodiment.

Therefore, a method of operating the heating apparatus 300 for instantaneous hot water according to the third embodiment of the present invention will be described. First, water flows in through the inlet pipe of the front plate 310. The inflow water flows toward the discharge pipes of the front and rear plates 310 and 330 through the flow paths 316 and 332 of the front and rear plates 310 and 330. [ At this time, the water is supplied to the respective heaters 340 installed between the front plate 310 and the intervention plate 320 and between the intervention plate 320 and the rear plate 330 while flowing toward the discharge pipe . Thereafter, the hot water is discharged from the flow path 316 of the front plate 310 or the flow paths 316 and 332 of the front and rear plates 310 and 330.

On the other hand, the water is sensed by the bimetal unit mounted on the outer wall of the front plate 310. Among the bimetallic units, the bimetal for preventing overheating senses whether the incoming water is heated to a set temperature or more when the heated water is heated. The overheat protection bimetal stops the operation of the heater (340) to prevent the water from further heating when it senses that the water is heated to a set temperature or more. When the operation of the heater 340 is stopped, the heated water is cooled. At this time, the bimetal of the bimetallic unit detects whether the temperature of the water falls below the set temperature. When the temperature of the water falls below the set temperature, the bimetal prevents the water temperature from being reduced, and the heater 340 is restarted to heat the water again.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the equivalents of the appended claims, as well as the appended claims.

100, 200, 300: Heating device for instantaneous hot water
110, 210, 310: front plate
120, 220, 320: intervention plate
122, 222, 316, 332:
124, 224, 316, 332:
130, 230, 330: rear plate
140, 240, 340: heater

Claims (10)

A front plate on which an inlet and an outlet are formed;
An intervening plate having a flow path formed inside the front surface so as to communicate with an inlet port and an outlet port of the front plate and having a partition wall formed on the opposite surface to correspond to the width of the flow path;
A rear plate closing said intervention plate; And
And a heater disposed on both surfaces of the front plate and the rear plate. The flow rate of the hot water is set to be 30 to 70% of the width of the inlet side to the outlet side so that the width becomes narrower from the inlet side to the outlet side. Heating device for heating.
A front plate on which an inlet and an outlet are formed;
An intervening plate having a channel formed therein to communicate with an inlet port and an outlet port of the front plate and a partition wall formed on the opposite surface of the channel plate to correspond to the width of the channel;
A rear plate having the intervention plate closed and formed on the finish surface by drawing to communicate with the flow passage; And
And a heater provided on a surface of the rear plate, wherein a width ratio of the inlet side to the outlet side is set to 30 to 70% so that the width becomes narrower from the inlet side to the outlet side, .
A front plate having an inlet pipe connected to the inlet port and a discharge pipe connected to the outlet port, a flow path formed on the back surface to communicate with the inlet pipe and the outlet pipe, and a partition wall formed on the opposite surface to the width of the flow path;
An intervening plate closing the flow path of the front plate;
A rear plate which is in close contact with the intervention plate and has a flow path formed on the inner wall surface to correspond to the flow path of the front plate and a partition wall formed on the opposite surface of the flow plate, And
And a heater interposed between the front plate and the intervening plate and between the intervening plate and the rear plate, wherein the width of the flow path is smaller than the width ratio of the inlet side to the outlet side so that the width becomes narrower from the inlet side to the outlet side, Is 30 to 70%.
4. The method according to any one of claims 1 to 3,
Wherein the flow path is applied with silicon or plastic material.
delete The method according to claim 1,
And a glassy insulating layer is formed on both surfaces of the front plate and the rear plate, respectively.
3. The method of claim 2,
And a glassy insulating layer is formed on an outer surface of the rear plate.
The method of claim 3,
Wherein a glassy insulating layer is formed on both sides of the rear plate.
9. The method according to any one of claims 6 to 8,
The heater provided in the glassy insulating layer may be formed,
A plurality of electrodes metallized on the surface of the glassy insulating layer; And
And a heating element for patterning the plurality of electrodes so as to have a set pattern.
10. The method of claim 9,
Wherein the glassy insulating layer is formed by combining one or more of a ceramic coating, a Teflon coating, and a silicon coating.

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