KR20110019173A - The case of heat exchanger system by a condensing type - Google Patents

Abstract

PURPOSE: A case of a condensed heat exchanger system is provided to make the exchanger system smaller and to enlarge a heating surface by using a bellows pipe. CONSTITUTION: A case of a condensed heat exchanger system comprises a casing(10), a burner(22), a supply tube(40), upper and lower cap(20,30) and an interval holding protrusion(11). The burner and an interval holding protrusion installed in the inner side of the casing. The burner receives gas and air through the supply tube and to produce combustion heat.

Description

The case of heat exchanger system by a condensing type}

The present invention relates to a case of a condensation type heat exchanger, and more particularly, to ensure high efficiency by securing a large heat transfer area in a small size, and to prevent the flow of the heat exchanger and to reduce the flow path of exhaust gas and combustion heat. It is invented so that it can be ensured smoothly.

Existing heat exchangers burn gas or other fuel, and heat the feed pipe passing through the heat exchanger with the combustion heat generated therein to obtain heating water and hot water while exchanging heat with the working fluid flowing therein.

Such heat exchangers are formed by arranging circular supply pipes in a stacked form in a housing manufactured to have a predetermined volume, and forming a working fluid therein, and installing burners at upper and lower portions of the heat exchanger. It is configured to exchange heat with combustion heat.

In addition, when the heat of combustion heat exchanges inside the heat exchanger, as the temperature decreases, the condensate containing the oxide material is generated, and the combustion gas and the condensate are discharged to the outside along the outlet formed at the lower portion of the casing.

The heat exchanger is widely used while having a variety of structures for various industrial fields.

However, the conventional heat exchanger is assembled with the case and the heat exchanger by receiving the cylindrically wound supply pipe inside the casing manufactured to have a predetermined volume, and then fixing the supply pipes at both inlet and outlet sides, respectively.

In the case of a general supply pipe, the rigidity of the assembly is so strong that when the assembly is formed in a circular shape and only both ends of the supply pipe are fixed to the casing, elastic assembly force or deformation of the assembly position is generated by expansion.

Therefore, there was a problem in that the heat exchanger can be fixed and installed more safely and permanently.

In addition, due to the expansion of the heat exchanger, the gap with the inner wall of the case is blocked, so that the combustion heat and the exhaust gas do not have a normal smooth flow, and heat discharge is concentrated only in a specific area, thereby reducing the thermal efficiency.

In addition, in order to maximize heat exchange performance and heat exchange efficiency, there is a problem in that the size of the product increases and the cost increases due to the increase in the number of materials and parts.

The present invention is to provide a condensation type heat exchanger capable of miniaturizing the heat transfer area is enlarged by fixing the supply pipe formed of the corrugated pipe without a separate member to solve the above problems by forming a gap maintaining protrusion inside the casing.

Another object of the present invention, the heat of high temperature combustion is blocked so that the upper and lower parts pass only through the gap of the corrugated pipe, the heat exchange is made efficiently, and the combustion gas passed through the induction path between the corrugated pipe and the casing is discharged to the exhaust port. To provide a condensation type heat exchanger.

The purpose of the present invention, the burner 22 is installed in the casing 10, the water inside the supply pipe 40 is provided to the outside of the burner 22 by the heat of combustion generated by the combustion gas discharged in the casing axial direction. In the heat exchanger 100 is heated and provided as heating water or hot water, the casing (10) end is formed with a blocking cap (20) (30) is fixed to the casing (10);

It is achieved by arranging at least three space keeping projections 11 inside the casing 10.

Here, the spacing holding protrusion 11 is formed to protrude from the end of the casing 10 to the opposite end.

On the other hand, the gap holding projection 11 may be a separate member fixedly attached to the opposite end from the end of the casing (10).

According to the configuration of the present invention, the size of the casing can be miniaturized by using a corrugated pipe having a large heat insulating area, and the gap holding protrusion is formed on the casing itself to simplify the installation and fixing of the supply pipe, thereby facilitating the operation.

In addition, the upper and lower parts of the supply pipe are blocked, and the heat of combustion is passed only through the gap of the corrugated pipe, thereby improving heat exchange performance and heat exchange efficiency.

In addition, between the gap maintaining protrusions formed to fix the corrugated pipe may be used as an induction passage through which the combustion gas and the condensed water move through the corrugated pipe to be discharged, thereby simplifying an internal configuration.

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.

1 is an exploded perspective view of the casing 10 of the condensation type heat exchanger according to the present invention, and FIG. 2 is a front sectional view showing a state in which the supply pipe 40 according to the present invention is assembled to the casing 10.

Figure 3 is a perspective view showing an exploded view of the supply pipe of the present invention, Figure 4 is assembled in a state in which a constant interval between the supply pipe 40 is maintained by the interval maintaining projection 11 of the casing 10 by the present invention. It is a plan sectional view showing the structure.

5 is an enlarged longitudinal sectional view of a main part showing a structure in which a constant gap is maintained between supply pipes 40 by the gap maintaining protrusion 11 of the casing 10 of the present invention.

6 is a perspective view illustrating a process in which the supply pipe 40 is molded into a corrugated pipe shape.

The present invention is invented to prevent the flow of the heat exchanger and to ensure a smooth passage of the exhaust gas and the heat of combustion.

The heat exchanger mounted inside the case of the boiler has a supply pipe 40 wound in a coil shape as shown in FIG. 6, and a burner 22 is positioned inside the upper side in the assembled state of the boiler.

The burner 22 is a hollow cylinder, and is supplied with gas and air mixed from an unillustrated supply pipe to generate sparks from an ignition plug (not shown), whereby the mixed air is combusted to form a flame outside the cylinder. Will be created.

The burner 22 is fastened to the upper cap 20 in a state fixed to the burner fixture.

The upper cap 20 is formed to form a hole in the center and is fitted to the upper side of the cylindrical casing 10 in the state where the burner fixture is fitted to the outside is fixed to seal the inside.

In addition, the lower portion of the casing 10 is fixed to the lower cap 30, and the heat is maintained by the heat insulating material 1 in a state of maintaining airtightness by packing through the upper and lower upper cap 20 and the lower cap 30. It will block the release immediately.

The lower cap 30 is provided with a plurality of protrusions 31 to form an induction passage for guiding the combustion gas to a gap between the supporting plates 2 supporting the lower heat insulating material 1.

Therefore, the high temperature combustion heat generated in the burner 22 is moved to the inner wall of the casing 10 through the gap of the supply pipe 40 wound in a coil form into a corrugated pipe because the upper and lower parts of the heat exchanger are blocked.

The lower cap 30 is provided with a connection port 32 on the outside of the casing 10, and an exhaust pipe (not shown) is connected to the connection port 32.

The exhaust pipe is equipped with a drain fan for more smoothly discharging the combustion gas and condensate to the outside to allow the heat of combustion of the burner 22 to pass through the inner supply pipe 41a and the outer supply pipe 41b so as to perform heat exchange. 10) After guided to the inner wall is sucked toward the lower cap 30 and then forced to exhaust through the exhaust pipe connected to the connector (32).

Meanwhile, as shown in FIGS. 3 and 5, the casing 10 protrudes a plurality of gap maintaining protrusions 11 inward to contact the outer supply pipe 41b of the supply pipe 40 and the gap maintaining protrusion 11. The flow of the supply pipe 40 is prevented.

The gap maintaining protrusion 11 guides the supply pipe 40 and the casing 10 to be assembled at a more precise concentric position, and uniformly forms a passage through which the exhaust gas can be moved.

Here, at least three interval maintaining protrusions 11 protruding to the inner side of the casing 10 are installed. Preferably, the interval maintaining protrusions 11 are each protruded to the same size at a position divided by 120 mm. The assembly position of the cylindrical supply pipe 40 to be assembled into the guide is to be concentric.

The gap holding protrusion 11 is integrally protruded and formed vertically from the top to the bottom of the casing 10 as shown in the drawing.

However, although not shown, the gap holding protrusion 11 may be fixedly attached with a separate gap holding member vertically from the top to the bottom of the casing 10.

In the process of forming the casing 10 by a press, the gap maintaining protrusion 11 is simultaneously formed by the design of the upper mold and the lower mold, and the gap maintaining protrusion ( The end of 11) and each boundary of the casing 10 are given a round.

Therefore, when assembling the supply pipe 40 into the casing 10, the assembly position is accurately guided concentrically, and a constant gap is formed between the casing 10 and the supply pipe 40 as shown in FIG. It is to ensure that the discharge of gas and combustion heat can be induced uniformly.

Such, the gap maintaining protrusion 11 of the casing 10 serves as a guide during assembly of the supply pipe 40, as well as a fixed role for preventing the flow of the supply pipe 40, and expands when the internal pressure of the supply pipe 40 rises. This can be prevented.

In the present invention, the supply pipe 40 is configured to be separated into the inner supply pipe 41a and the outer supply pipe 41b, as shown in FIG. The large outer diameter supply pipe (41b) is to produce a double pipe.

At this time, both the inner supply pipe (41a) and the outer supply pipe (41b) is pressed into a long oval shape consisting of a long axis and a short axis by pressing the corrugated pipe and then formed in a coil shape with different spiral directions, formed in the inner and outer double In the state, both ends are connected to the header bracket 50 at the same horizontal position.

Therefore, when the combustion heat of the burner is squeezed and the upper and lower surfaces are moved to a gap between the inner supply pipe 41a and the outer supply pipe 41b, which are pressed relatively close to horizontal, the surface area required for the heat exchange can be improved.

In addition, since the gap is formed by the corrugated valleys and the acid in the state in which the inner supply pipe 41a and the outer supply pipe 41b are stacked up and down, combustion heat and exhaust gas can pass through the gap.

The inner supply pipe 41a and the outer supply pipe 41b formed as described above are fixed to the header bracket 50 at both ends at the same height.

The header bracket 50 is in close contact with the entrance nipples 60 and 61 for connecting the circulation pipe from the outside in the state of being located on the inner side of the casing 10, and then with a screw or the like for the airtight packing therebetween. The access nipples 60 and 61 are connected to the header bracket 50.

Hot water pipes or heating pipes are connected to the entrance nipples 60 and 61, respectively, and the water flowing from the lower entrance nipples 60 passes through the inner supply pipe 41a and the outer supply pipe 41b to the upper entrance nipple 61. It is piped so that heated hot water is used as heating water after being exchanged by heat of combustion while moving.

Both ends of the inner supply pipe 41a and the outer supply pipe 41b are bent toward the header bracket 50 in a state where the plate-shaped header bracket 50 is located at the center of the feed pipe 40 in the axial direction. ) And S bends (S) should be bent respectively.

In particular, in order to maintain the same height as the end of the inner supply pipe (41a) of the outer supply pipe (41a) is to form an S curved portion (S) to draw a large curve in the shape of the letter 'S'.

On the other hand, the supply pipe 40 may be composed of two of the outer supply pipe (41b) and the inner supply pipe (41a), as shown in the other central supply pipe (41c) may be piped into the inner supply pipe (41a) have.

The central supply pipe 41c is also coiled with a pipe material having excellent corrosion resistance like stainless steel, and both ends thereof are fitted to the center side of the header bracket 50 to be fixed in a state of airtightness by welding.

The central supply pipe 41c may be selected as a pipe member having a smooth surface rather than a corrugated pipe.

According to the configuration of the present invention, while forming a combustion gas passage in the cylindrical casing, the cylindrical supply pipe positioned therein is guided to be more accurately assembled.

In addition, the flow of the supply pipe 40 can be prevented in the assembled state, and the manufacturing process can be simplified as a whole and the cost can be reduced.

1 is an exploded perspective view of a casing of a condensation type heat exchanger according to the present invention;

2 is a front sectional view showing a state in which a supply pipe according to the present invention is assembled to a casing.

Figure 3 is an exploded perspective view of the supply pipe of the present invention.

Figure 4 is a plan sectional view showing a structure in which the supply pipe is assembled in the casing according to the present invention.

5 is an enlarged longitudinal sectional view of the main portion of FIG.

Figure 6 is a perspective view showing a process in which the supply pipe of the present invention is molded into a corrugated pipe form.

* Description of the symbols for the main parts of the drawings *

10-Casing 11-Spacing protrusion

20-Top Cap 22-Burner

30-lower cap 31-protrusion

32-Port 40-Supply Line

41a-Inner Supply Pipe 41b-Outer Supply Pipe

41c-central supply line 50-header bracket

60, 61-Access Nipple 100-Heat Exchanger

Claims (5)

The burner 22 is installed in the casing 10 to heat the water in the supply pipe 40 provided outside the burner 22 with the combustion heat generated as the combustion gas is discharged in the axial direction of the casing, thereby heating water or hot water. In the heat exchanger 100, the casing (10) end is provided with a blocking cap (20, 30) is fixed to the casing (10); The casing (10) of the case of the condensation type heat exchanger, characterized in that at least three or more space maintaining projections (11) arranged inside. The case of a condensation type heat exchanger according to claim 1, wherein the gap maintaining protrusion (11) protrudes from the end of the casing (10) to the opposite end. The case of a condensation type heat exchanger according to claim 1, wherein the gap maintaining protrusion (11) is fixedly attached to an opposite end from an end of the casing (10). The method of claim 1, wherein the casing 10 is an assembly of a cylindrical supply pipe 40 which is assembled into the three by projecting the interval maintaining projections 11 toward the inside of each of the same size at an angle divided by 120 ㅀ each A case of condensation type heat exchanger, characterized by guiding the position to be concentric. The case of a condensation type heat exchanger according to any one of claims 1 to 5, wherein a round is formed at each end of the gap holding protrusion (11) and each boundary of the casing (10).

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