KR101646761B1 - Heat Exchanging Apparatus - Google Patents

Abstract

According to the present invention, disclosed is a heat exchange apparatus capable of enhancing hot water and heating efficiency while minimizing usage of energy resources. According to the present invention, the heat exchanging apparatus comprises: a fluid distribution/integration unit to distribute or integrate inputted or outputted fluids; a fluid pipe plate combined with the fluid distribution/integration unit, branching at least one pipe into a plurality of pipes inside a plurality of plates based on a flow rate per unit area, and having a fluid pipe which is branched again into one or more steps from each branched pipe based on a flow rate per unit area; and a micro-pipe plate having a straight pipe inside a plurality of plates by corresponding to each pipe branched by the final step of the fluid pipe plate. The fluid distribution/integration unit and the fluid pipe plate are symmetrically formed with respect to the micro-pipe plate.

Description

Heat Exchanging Apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanging apparatus, and more particularly, to a heat exchanging apparatus capable of increasing the efficiency of hot water and heating while minimizing the amount of energy resources such as gas and oil by greatly reducing thermal resistance.

Generally, a heat exchanger is a device that transfers heat from a high temperature fluid to a low temperature fluid through a heat exchanger having a high heat conduction efficiency and is mainly used in products such as air conditioners, boilers, refrigerators, and heaters.

Among them, the boiler is a device for generating hot water or high-temperature and high-pressure steam by heating the water contained in the closed container inside or outside the container. Since hot water or steam generated by the boiler is in a high temperature state, And it is used in various fields such as electric power generation by using the steam turbine of the thermal power plant by using high pressure characteristics of the generated steam or by using it for winter heating.

In particular, consumption of natural gas, which is less polluted than other fossil fuels, is increasing worldwide, and it is expected that heating and hot water using natural gas will be further expanded by mining of shale gas.

At present, heat exchangers such as domestic and industrial gas boilers for heating or hot water are widely used, and the efficiency of the condensing technology for recovering and recycling waste heat has also increased by 20% or more. However, due to the abnormal weather phenomenon caused by global warming, not only the average temperature of winter is gradually decreasing but also the energy of the energy source such as oil and gas is further increased.

 Therefore, there is a great need to develop a heat exchanger capable of increasing the efficiency of hot water and heating while minimizing the energy consumption of gas, oil and electricity.

Registration Utility Model No. 20-0255210 (Registration date: November 12, 2001)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat exchange apparatus which is capable of increasing the efficiency of hot water and heating while minimizing the amount of energy resources such as gas, oil and electricity by greatly reducing heat resistance do.

According to an aspect of the present invention, there is provided a heat exchange apparatus including: a fluid distribution / integration unit for distributing or integrating a fluid to be introduced or discharged; Wherein at least one conduit is branched into a plurality of conduits based on a flow rate per unit area and each branched conduit is connected to a fluid distribution / integration section, wherein at least one conduit is branched into a plurality of conduits based on a flow rate per unit area, A fluid conduit plate having a fluid conduit which is abnormally re-branched; And a micro-channel plate in which a linear channel is formed corresponding to each of the channels branched by the final stage of the fluid channel plate inside the plurality of plates, and the fluid distribution / integration unit and the fluid channel plate are connected to the micro- As shown in FIG.

The heat exchanging apparatus described above is characterized in that a channel corresponding to each of the channels branched by the final stage of the fluid channel plate is formed in a plurality of plates and each channel is divided into a plurality of And an intermediate conduit plate having an intermediate fluid conduit branching to the conduit. In this case, the microchannel plate is formed in a plurality of plates so that a channel corresponding to each of the channels branched to the final stage of the intermediate channel plate is linearly formed, and the intermediate channel plate is formed symmetrically with respect to the microchannel plate do.

Here, the fluid conduit plate, the micro conduit plate, and the intermediate conduit plate are formed in the shape of a plate in which convex and concave surfaces are repeated at a predetermined depth and width.

In addition, a plurality of ignition points are formed on the intermediate channel plate at the lower end with respect to the micro-channel plate or the micro-channel plate.

Here, it is preferable that the fluid duct plate and the intermediate duct plate are branched at 1: 2 or 1: 3, respectively.

In addition, it is preferable that a circular duct is formed by using die casting or cutting, and the duct is formed by etching the intermediate duct plate and the micro duct duct plate.

In addition, the fluid duct plate, the intermediate duct plate and the micro duct line plate can be formed by brazing or soldering two plates provided with the ducts.

In addition, the fluid duct plate and the intermediate duct plate may be constructed by combining a plurality of layers corresponding to the branching step of the duct.

In addition, the fluid conduit plate, the micro conduit plate, and the intermediate conduit plate are each formed of a flat plate and are coupled to each other. At least one strand of the heat conduction wire is arranged in the horizontal direction at the position of the lower conduit plate relative to the micro conduit plate or micro- Can be installed.

Further, the intermediate duct plate and the micro duct line plate may be integrally formed using a 3D printer.

According to the present invention, it is possible to greatly reduce the heat resistance of a heat exchanger such as a water heater and a boiler, thereby increasing the efficiency of hot water and heating while minimizing the amount of energy resources such as gas, oil and electricity.

In addition, according to the present invention, the flow path of the fluid flowing into the heat exchanger and flowing out can be smoothly performed by branching the channel through various stages based on the flow rate per unit area.

Further, according to the present invention, since the branch structure of the pipeline and the formation of the microtubes are formed in the plate structure, the manufacturing cost of the boiler can be greatly reduced as well as facilitating the manufacture of the boiler.

Further, according to the present invention, by forming a structure in which the heat exchanging device is formed symmetrically with respect to the micro-channel plate and the channel is branched based on the flow rate per unit area of each channel, the pressure loss of the fluid flowing in the channel is reduced , It is possible to prevent the generation of bubbles and prevent the occurrence of obstacles to the flow of the fluid.

Further, according to the present invention, the use of fossil fuel can be reduced by heating the fluid through the electric hot line using electricity without using fossil fuel as fuel, and the fluid can be heated quickly.

1 (a) is a perspective view of an appearance case, FIG. 1 (b) is a plan view of an appearance case, and FIG. 1 (c) is a plan view of an outer appearance of a heat exchange apparatus according to an embodiment of the present invention. Is a side view of the outer case.
FIG. 2 is a schematic view of a heat exchanger according to an embodiment of the present invention. Referring to FIG.
3 is a schematic view showing an example of a fluid distribution / integration unit of the heat exchange apparatus shown in FIG.
Fig. 4 is a view schematically showing a fluid duct plate of the heat exchanger shown in Fig. 2; Fig.
5 is a view schematically showing a micro-channel plate of the heat exchanger shown in Fig.
6 is a view schematically showing an intermediate pipe plate of the heat exchanger shown in Fig.
7 is a view showing an example in which the ignition point of the intermediate channel plate shown in Fig. 6 is installed.
8 is a perspective view of a heat exchanger having a fluid duct plate, a micro duct line plate, and an intermediate duct plate.
9 is a cross-sectional view showing an example of the formation of a channel of the heat exchanger shown in Fig.
10 is a side cross-sectional view of a heat exchange apparatus according to another embodiment of the present invention.
11 is a plan view of the heat exchanger shown in Fig.

Hereinafter, a heat exchanger according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 (a) is a perspective view of an appearance case, FIG. 1 (b) is a plan view of an appearance case, and FIG. 1 (c) Is a side view of the outer case.

Referring to FIG. 1, a heat exchange apparatus according to an embodiment of the present invention may be mounted in an outer case 10 as shown in FIG. At this time, the outer case 10 may be formed in the shape of a rectangular parallelepiped, and on the upper and lower surfaces thereof, a pipe orifice 12 through which pipes for the inflow and outflow of fluids such as gas, oil, water or the like may pass may be formed.

FIG. 2 is a schematic view showing a configuration of a heat exchange apparatus according to an embodiment of the present invention.

2, a heat exchange apparatus according to an embodiment of the present invention may include a fluid distribution / integration unit 110, a fluid conduit plate 120, a micro conduit plate 130, and an intermediate conduit plate 140 .

The fluid distribution / integration section 110 is installed on the fluid inlet side and the fluid outlet side of the heat exchange device, respectively, and distributes or integrates the inflow or outflow fluid. 3, the fluid distributor 110 distributes the fluid introduced into the heat exchanger to the plurality of ducts 114 in the primary distributor 112 and flows through the respective ducts 114 The fluid is dispensed into a plurality of plate distributors (116).

The fluid integrator 110 has the same structure as that of the fluid distributor 110 and is provided symmetrically with respect to the fluid distributor 110 so that the same reference numerals are given to the fluid distributor 110. At this time, the fluid integrator 110 integrates the fluid flowing out of the heat exchanger using a plurality of plate integrators 116, and distributes the fluid flowing through each plate integrator 116 to the plurality of ducts 114 And integrates the fluid flowing out through each channel 114 in the final integrator 112 and discharges the fluid to the outside. Hereinafter, the description of the fluid integrator 110 will be described with reference to the description of the fluid distributor 110. [

The fluid channel plate 120 is coupled to the fluid distribution / integration unit 110, and at least one channel is branched into a plurality of channels based on the flow rate per unit area, A fluid channel is formed which is at least one or more re-branched based on the flow rate per unit area. At this time, as shown in FIG. 4, the fluid channel plate 120 may have a plate shape in which convex and concave surfaces are repeated with a predetermined depth and width. In addition, the fluid channel plate 120 is formed by forming a semicircular channel groove on one plate using die casting or cutting, forming a semicircular channel groove facing the other plate, Plates can be joined by brazing or soldering. In addition, the fluid duct plate 120 may be embodied as a plurality of layers according to the step of branching the duct, as shown in Fig. That is, the fluid channel plate 122 of the uppermost layer is vertically formed with a fluid inflow hole 125 through which the fluid flows from the fluid distributor 110, and the upper end of the fluid channel plate 124 of the second layer An upper pipe line 126 through which fluid flowing through the fluid inflow hole 125 flows and a branch inflow hole 126 through which the respective fluid inflow holes 125 branch off can be vertically formed. Such a layer structure can be implemented in a plurality of layers according to the branching step of the channel. At this time, each pipe can be branched in the form of 1: 2 or 1: 3, and the diameter of each branched pipe can be determined based on the flow rate per unit area of the pipe before branching. That is, assuming that the A conduit branches into three B conduits, the flow rate per unit area can be established as shown in Equation (1).

[Equation 1]

(π / 4) x (diameter of channel A) ² x A velocity of the fluid in channel A

= 3 x (? / 4) x (diameter of the B pipe) ² x fluid velocity of the B pipe

Here, when the flow rate of the pipeline before branching and the combined flow rate of the pipeline after branching are different, it is preferable that the flow rate between the respective pipelines is kept constant since the flow of the fluid may be obstructed. Therefore, it is possible to determine the diameter of each pipe branching on the basis of the flow rate per unit area as expressed by Equation (1).

The micro channel plate 130 is formed with a linear channel corresponding to each of the channels branched by the final stage of the fluid channel plate 120 inside the plurality of plates. That is, as shown in FIG. 5 (a), the micro-channel plate 130 is formed of a plurality of plates having the same shape as the plate 120 of the fluid channel, And a channel 132 corresponding to the channel branched by the final stage is formed in a linear direction. At this time, the micro-channel plate 130 is etched to form semicircular channels opposing each other on the two plates, and can be bonded by brazing or soldering. Here, the fluid distribution / integration unit 110 and the fluid channel plate 120 are preferably formed symmetrically with respect to the micro channel plate 130.

On the other hand, the etching technique is a technique of chemically etching and removing by using acid or other corrosive agent in order to generate a desired pattern on a selected portion of a material surface, and is used in a manufacturing process of a semiconductor integrated circuit. There are three methods of etching: wet etching, dry etching (plasma etching), and ion milling. Wet etching uses an etchant, which is less expensive and selectable, but it is easy to contaminate the surface and undercut the resist. Plasma etching uses either neutral plasma or charged plasma. The undercut is significantly reduced (especially in the case of a charged plasma), but the selectivity is poor. Finally, ion milling removes the resist with an ion beam, which is good in selectivity and precision, but is slow in operation and can be used only in the case of both resists.

Brazing or soldering is a technique using brazing to bond thin metal sheets, which is also referred to as hard soldering, in which a bonding portion is heated with brass lead, silver solder, or the like as an adhesive, and is melted and bonded. At this time, the adhesive is referred to as a sintered product and is often powder or plate-like. The flux (solvent) is used for cleaning the bonding surface, and many of them are boron-based. The work of heating and bonding the whole is called furnace brazing.

The intermediate conduit plate 140 may be installed between the fluid conduit plate 120 and the micro conduit plate 130. It is preferable that the channel of the micro channel plate 130 has a diameter of 1 mm or less in order to generate a capillary phenomenon. For this purpose, a multi-step branch process is required in consideration of the diameter of the upper channel of the channel plate 120 It is possible.

Here, capillary phenomenon is a phenomenon in which a liquid rises to a tube with a very narrow hole, and Giovanni Borelli proves that the height of the liquid up to the tube is inversely proportional to the inside diameter of the tube. The height of the rising water is about 50mm.

The intermediate conduit plate 140 is embodied as a plurality of plates of the same type as the fluid conduit plate 120 and the capillary plate 130 and each of which is branched into the respective plates by the final stage of the fluid conduit plate 120 And an intermediate fluid conduit is formed in which each of the conduits is branched into a plurality of conduits by at least one step based on the flow rate per unit area. At this time, the intermediate channel plate 140 is formed in a manner that each channel is branched at 1: 2 or 1: 3 in an etching manner, or is divided into a plurality of layers May be combined. In this case, since the shape of each layer is similar to the layer structure of the fluid channel plate 120, detailed description thereof will be omitted here. The intermediate channel plate 140 may be formed by bonding a thin plate by a brazing or soldering method in the same manner as the micro channel plate 130. In addition, the intermediate channel plate 140 and the micro channel plate 130 may be integrally formed using a 3D printer. At this time, various known technologies can be applied to the method using the 3D printer, and a detailed description thereof will be omitted here.

Here, the micro-channel plate 130 is formed in a plurality of plates with a channel corresponding to each of the channels branching to the final stage of the intermediate channel plate 140 in a straight line direction, and the intermediate channel plate 140 is connected to the micro- Is formed symmetrically with respect to the plate (130). 7, the intermediate channel plate 140 at the lower stage with respect to the micro-channel plate 130 has a plurality (not shown) between the respective plates of the lowermost layer 144 among the plurality of layer structures 142 and 144 And the ignition point 146 of the igniter. Here, the ignition point 146 is for increasing the temperature of the fluid flowing through the channel, and may be irregularly provided between the plate and the plate. The firing point 146 may be formed between the plate at the lowermost end of the micro channel plate 130 and the plate, although the firing point 146 is illustrated and described in the intermediate channel plate 140.

8 is a perspective view of a heat exchanger having a fluid duct plate, a micro duct line plate, and an intermediate duct plate.

Referring to FIG. 8, the heat exchanger according to the embodiment of the present invention includes a fluid channel plate 120 and an intermediate channel plate 140 each formed of a plurality of plates, It is possible to form a capillary in the micro channel plate 130.

9 is a cross-sectional view showing an example of the formation of a channel of a heat exchange device according to an embodiment of the present invention.

9, assuming that the four channels are branched into 1: 2 -> 1: 2 -> 1: 3 -> 1: 3 -> 1: 3, the micro channel plate 130 is provided with 432 Are formed. In this way, the micro-channel plate 130 forms a capillary having a diameter of 1 mm or less, and it is possible to prevent the flow of the fluid velocity from being obstructed.

In the case of general boiler equipment, heat is supplied from the outside to heat the fluid inside the pipe. In this case, in order to heat the water inside the tube, the external heat must be transferred to the inside water through the tube. In this process, the heat resistance due to the thickness of the tube and the heat resistance due to the thermal conductivity of the tube, Heat resistance and the like are generated.

In the embodiment of the present invention, a tube having a diameter of about 20 mm is generally realized to be 1 mm or less, so that the heat resistance can be minimized and the fluid can be instantaneously heated. That is, a tube having a diameter of 20 mm has a thickness of about 2 mm, and a cross-sectional area of a fluid moving inside the tube is 0.000314 m ² . Assuming a tube with a diameter of 0.5 mm, the thickness of the tube wall is 0.15 mm, and the cross-sectional area through which the fluid moves is 0.000000196 m ² . Simply arithmetically, the thermal resistance by thickness is 13 times and the thermal resistance by area is 1600 times less. This means that heating the heat exchanger in a bundle type combustor composed of a tube of 0.5 mm results in little thermal resistance. If the existing boiler system is heated to several hundreds to produce hot water of less than 100 degrees, the heat exchanger according to the embodiment of the present invention can generate hot water of over 90 degrees by heating to a temperature of less than 100 degrees.

FIG. 10 is a side sectional view of a heat exchanger according to another embodiment of the present invention, and FIG. 11 is a plan view of the heat exchanger shown in FIG.

10 and 11, the heat exchanger according to the embodiment of the present invention includes a fluid conduit plate 120, a micro conduit plate 130, and an intermediate conduit plate 140 having a convex surface and a concave surface Instead of being formed in the shape of a repeated plate, each of the plates may be a flat plate and coupled to each other. At this time, at least one strand of electric heating wire 148 may be installed in the horizontal direction at the position of the lower channel plate 140 at the lower side of the micro-channel plate 130 or the micro-channel plate 130. At this time, the fluid can be heated within a short time because there is no thermal resistance between the fluid flowing through the micro-channel of the micro-channel plate 130 or the channel of the intermediate channel plate 140 and the electro-hot line 148.

Claims (10)

delete A fluid dispensing / integrating unit for dispensing or integrating the inflow or outflow fluid;
Wherein at least one channel is branched into a plurality of channels based on a flow rate per unit area, and each branched channel is divided into at least one channel based on a flow rate per unit area A fluid conduit plate on which a fluid conduit is formed, the conduit having a fluid conduit formed therein to be rejoined;
Wherein a plurality of channels are formed in the plurality of plates so as to correspond to the respective channels branched by the final stage of the fluid channel plate, and each of the channels is divided into a plurality of channels An intermediate conduit plate having a fluid conduit; And
A micro-channel plate in which a channel corresponding to each channel branched into a final stage of the intermediate channel plate is formed in a plurality of plates in a linear direction;
/ RTI >
Wherein the fluid distribution / integration unit, the fluid conduit plate, and the intermediate conduit plate are formed symmetrically with respect to the micro conduit plate. 3. The method of claim 2,
Wherein the fluid conduit plate, the micro conduit plate, and the intermediate conduit plate have a shape in which convex and concave surfaces are repeated with a predetermined depth and width. 3. The method of claim 2,
Wherein a plurality of ignition points are formed in the intermediate conduit plate below the micro conduit plate or the micro conduit plate. 3. The method of claim 2,
Wherein the fluid channel plate and the intermediate channel plate each have a 1: 2 or 1: 3 branch line. 3. The method of claim 2,
The fluid conduit plate is formed with a circular conduit using die casting or cutting,
Wherein the intermediate conduit plate and the micro conduit plate are formed with a channel by etching. 3. The method of claim 2,
Wherein the fluid conduit plate, the intermediate conduit plate, and the micro conduit plate are formed by brazing or soldering two plates having conduits therein. 3. The method of claim 2,
Wherein the fluid conduit plate and the intermediate conduit plate are formed by combining a plurality of layers corresponding to the branching step of the conduits, respectively. 3. The method of claim 2,
Wherein the microchannel plate, the microchannel plate, and the intermediate channel plate are each formed as a flat plate and are coupled to each other, and at least one strand of the heat conduction plate is disposed at a position of the intermediate channel plate below the microchannel plate or the microchannel plate, Is installed in the horizontal direction. 3. The method of claim 2,
Wherein the intermediate conduit plate and the micro conduit plate are integrally formed using a 3D printer.

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