WO2016080715A1

WO2016080715A1 - Boiler having check valve integrated with water pipe line

Info

Publication number: WO2016080715A1
Application number: PCT/KR2015/012283
Authority: WO
Inventors: 김성기; 양현익
Original assignee: 주식회사 경동나비엔
Priority date: 2014-11-19
Filing date: 2015-11-16
Publication date: 2016-05-26
Also published as: RU2017121072A; CN107076461A; KR101639188B1; KR20160059678A; RU2676172C2; EP3222929A4; EP3222929A1; CN107076461B; RU2017121072A3

Abstract

The objective of the present invention is to provide a boiler having a check valve integrated with a water pipe line, the boiler being capable of simplifying and miniaturizing the structure of a water pipe. The present invention comprises: a three-way valve for changing a heating water passage in order to supply heating water, heated in a main heat exchanger, to a place to be heated or to selectively supply the same to a heat exchanger for hot water supply; a bypass pipe connecting the three-way valve, and a heating water return pipe connecting the place to be heated and the main heat exchanger; and a check valve provided at a bypass pipe line so as to allow fluid to flow in only one direction from the three-way valve toward the heating water return pipe when a heating pipe connected to the place to be heated or a heating pipe connected to the heat exchanger for hot water supply is closed such that overpressure is generated, wherein the three-way valve, the bypass pipe and the check valve are provided in an integrated form in the same water pipe module.

Description

Boiler with water pipe integrated check valve

The present invention relates to a boiler having a check valve integrated with a water pipe, and more particularly, a bypass structure of heating water in the water pipe module that can prevent the water pressure inside the heating pipe from rising above a certain level. The present invention relates to a boiler having a water pipe integrated check valve capable of simplifying and miniaturizing the structure of the water pipe by being formed integrally.

In general, a boiler is a device that heats heating water by the heat of combustion of a burner and supplies the heated heating water to a heating source for use in heating, or supplies hot water by heat exchange between the heated heating water and direct water.

Conventional boilers, the main heat exchanger for heating the heating water by the combustion heat of the burner, the circulation pump installed in the flow path of the heating water for forced circulation of the heating water, the heating water heated in the main heat exchanger to supply the heating source or hot water supply Three-way valve for switching the flow of heating water to selectively supply to the heat exchanger side, hot water supply heat exchanger for supplying hot water by heat exchange between the heating water and the direct water heated in the main heat exchanger, and the heating water returned through the heating requirements and It comprises an expansion tank for recovering and storing the heating water circulated through the hot water supply heat exchanger.

When the boiler configured as described above is operated in the heating mode or the hot water mode, if the user arbitrarily closes the heating pipe, or foreign matter accumulates in the heating pipe, and the heating pipe is blocked, the overpressure exceeding the allowable pressure in the heating pipe is exceeded. This can cause damage to boiler components, including circulation pumps. As a configuration for preventing the occurrence of overpressure in the heating pipe, Korean Patent Laid-Open Publication No. 1998-016052 discloses a bypass hole formed at one side of a discharge pipe between two vertical opening and closing holes formed in a discharge pipe of a bidirectional circulation pump and the bypass hole. The structure which connected the bypass pipe | tube between the heating water return pipe | tube and this is disclosed.

According to such a configuration, there is an advantage to prevent the occurrence of overpressure of the heating pipe, but the bypass pipe connecting the two-way circulation pump and the heating water return pipe is always open through the bypass hole, the heating pipe In the non-closed normal state, a part of the heated water in the heating mode and the hot water mode leaks to the heating water return pipe through the bypass pipe, so that the heat exchange efficiency of the heating water is deteriorated. With the disadvantage that the manufacturing cost of the boiler is increased.

On the other hand, the hot water heat exchanger, a fin-tube type heat exchanger is formed by inserting a plurality of tubes into the tank, a plurality of plates are stacked, the heating water and the direct water flows alternately in each layer inside the heat exchange is made It can be classified into a plate heat exchanger configured to build. Among these, the plate heat exchanger has advantages in that it is easier to assemble and reduce the number and volume of parts compared to the fin-tube heat exchanger to increase productivity.

A general structure of a plate heat exchanger in which a plurality of such plates are stacked is disclosed in Korean Patent Nos. 10-1151754 and 10-2003-0071249.

Conventional plate heat exchanger according to the prior art is configured to increase the heat exchange efficiency, the heating water inlet and the heating water outlet is formed on the other side of the lower and upper side of the plate, the direct inlet and the hot water outlet is the other side of the plate and the lower It is formed on one side, and the heating water and the direct water flow in a counter flow and are configured to perform heat exchange. However, in the conventional plate heat exchanger, since the water pipe in which the heating water flows and the water pipe in which the direct water (hot water) flows are formed to be spaced apart from each other at a diagonal position of the plate, the plate and the water pipe connected to the heating water inlet and the heating water outlet. As the water pipes connected to the direct water inlet and the hot water outlet are individually installed in separate locations from each other, the water pipe structure of the heating water and the water pipe structure of the direct water (hot water) become complicated and occupy a large installation space. It is difficult to miniaturize, there is a problem that the pressure loss is generated as the pipe of the water pipe is long, the thermal efficiency is lowered.

The present invention has been made to solve the above problems, the heating structure by integrally forming a bypass structure of the heating water to prevent the water pressure in the heating pipe rises above a certain level, integrally, heating It is an object of the present invention to provide a boiler having a check valve integrated with a water pipe, which can simplify and downsize the water pipe.

Another object of the present invention is to provide a boiler with a water pipe integrated check valve that can improve the productivity of the product by simplifying the assembly structure between the water pipe parts by configuring each functional product of the boiler water pipe in a modular unit. will be.

Still another object of the present invention is to provide a boiler having a water pipe integrated check valve capable of improving heat exchange performance by shortening the length of a pipe connecting the water pipe parts to minimize pressure loss.

Boiler equipped with a water pipe integrated check valve of the present invention for realizing the object as described above, the main heat exchanger 30 for heating the heating water by the heat of combustion of the burner, and the main heat exchanger 30 In a boiler having a hot water supply heat exchanger (100) for supplying hot water by heat exchange between heating water and direct water, the heating water heated in the main heat exchanger (30) is supplied to a heating source or the hot water supply heat exchanger (100). Three-way valve 210 for switching the flow path of the heating water to selectively supply to the side; A bypass pipe (L8) connecting the three-way valve (210) and a heating water return pipe (L3) for connecting the heating source and the main heat exchanger (30); And a heating pipe (L2) provided in the pipeline of the bypass pipe (L8) and connected to the heating source side, or the heating pipe (L6) connected to the hot water supply heat exchanger (100) side to close the overpressure. And, the check valve 220 to allow the flow of the fluid only in one direction from the three-way valve 210 toward the heating water return pipe (L3); including, the three-way valve 210 and the bypass pipe (L8) And check valve 220 is characterized in that it is provided integrally in the same water pipe module.

The heating pipes L4 and L5 connected to the heating water return pipe L3 may be provided with a circulation pump 20 for pumping the heating water in one direction toward the main heat exchanger 30.

When the heating pipe L2 connected to the heating source side or the heating pipe L6 connected to the hot water supply heat exchanger 100 is closed and overpressure occurs, the heating water heated by the main heat exchanger 30 is After being supplied to the three-way valve 210, flows into the bypass pipe (L8) communicated to one side of the three-way valve 210, passes through the check valve 220, and then flows into the expansion tank (10). In addition, the heating water stored in the expansion tank 10 may be configured to circulate by the circulation pump 20 to the main heat exchanger 30 to prevent the occurrence of overpressure in the heating pipe.

In the hot water supply heat exchanger 100, a plurality of plates are stacked and heating water and direct water flow alternately in each layer, and the heating water flow path P1 and the direct water flow path P2 are separated from each other so that heat exchange occurs. Is formed, the front plate 110 located in front of the plurality of plates, flows into the heating water inlet pipe (L6) formed on the lower side of the front plate 110 after passing through the heating water flow path (P1) On the other side of the lower side of the front plate 110 and the heating water discharge guide portion 110c for forming a flow path of the heating water so that the discharged heating water outlet pipe L7 is located close to the heating water inlet pipe L6. Hot water discharge guide portion for forming a flow path of hot water so that the hot water supply pipe (L11) is introduced into the formed direct inflow pipe (L10) and discharged after passing through the direct flow path (P2) is located close to the direct water inflow pipe (L10). (110d) brother Sung; One side of the hot water heat exchanger 100 and the heating water inlet pipe (L6) and the heating water outlet pipe (L7) is assembled so that the detachable, the three-way valve 210 and the bypass pipe (L8) and the check valve 220 Is provided integrally, the first water pipe module 200 for providing a flow path for the heating water supplied from the main heat exchanger 30 is returned via the heating requirements or hot water supply heat exchanger (100); A second water pipe is assembled so that one side of the hot water inlet pipe (L10) and the hot water supply pipe (L11) of the hot water supply heat exchanger 100 is detachable, and provides a flow path for the hot water and the hot water passing through the hot water heat exchanger (100). Module 300; may be configured to include.

The lower one side of the front plate 110, the heating water inlet hole 111 is connected to the heating water inlet pipe (L6) is formed, the one side of the heating water inlet hole 111, the heating water outlet pipe A heating water discharge hole 112 connected to the L7 is formed, and the heating water discharge guide part 110c discharges the heating water discharged forward toward the other upper side of the front plate 110. It can be configured to lead to the ball (112).

The other side of the lower side of the front plate 110, a direct inlet hole 113 is connected to the direct inlet pipe (L10) is formed, the upper portion of the front plate 110, the heating water discharge guide portion (110c) A hot water discharge hole 114 connected to the hot water supply pipe L11 is formed at a position close to the direct water inflow hole 113 among the non-formed areas, and the hot water discharge guide part 110d includes the front plate 110. Hot water discharged forward toward the upper one side of the) may be configured to guide the hot water discharge hole (114).

In the rear of the front plate 110, the heating water inlet hole 121 is formed on one side of the lower side, the heating water discharge hole 122 is formed on the other side of the upper side, the direct water inlet hole 123 is formed on the other side of the lower side The flat plate 120 having the hot water discharge hole 124 formed on the upper side is stacked, and an edge portion of the heating water discharge guide part 110c and the hot water discharge guide part 100d is edged to the flat plate 120. The contact may be in close contact, and the inner part of the edge may protrude forward to form a discharge flow path of the heating water and the hot water.

A plurality of first plates 130 and a second formed at the rear of the flat plate 120 so that the boss portion located in the diagonal direction intersect the front and rear in such a way that the heating water flow passage P1 and the direct flow passage P2 are alternately formed. The plates 140 are alternately stacked, and a plurality of first beads 135 and second beads 145 bent in opposite directions are formed on the first plate 130 and the second plate 140. The fluid may be configured to allow the fluid to flow through an overlapping gap between the first bead 135 and the second bead 145.

At the rear of the second plate 140 stacked at the rear end, the first flow path switching plate 150 for switching the direct flow path from the rear to the front and the flow path of the heating water are directed from the rear to the front. The second channel switch plate 160 for the conversion may be configured to be sequentially stacked.

The first flow path conversion plate 150, the heating water inlet hole 151 is formed on one side of the lower side, the heating portion discharge hole 152 is formed on the other side of the lower side, the other side and the upper one side is blocked in front and rear shape. The second flow path conversion plate 150 may be configured in a shape in which the entire area is blocked in front and rear.

The second water pipe module 300, the flow sensor 310 for detecting the flow of the direct water flowing into the direct water inflow pipe (L10), and when the lack of heating water to receive the direct water to replenish the heating water Water supplement pipe (L12), and the supplemental water valve 320 is provided in the pipeline of the water supplement pipe (L12) to regulate the flow of water can be provided.

According to the boiler provided with a water pipe integrated check valve according to the present invention, the supply of the three-way valve and the heating water connected to the three-way valve to switch the heating water in accordance with the heating mode and hot water mode in the first water pipe module and By integrally equipped with a bypass pipe and a check valve to prevent overpressure in the circulation flow path and the heating pipe, the structure of the water pipe can be simplified and the installation space can be reduced, while preventing damage to components caused by overpressure. The durability can be improved.

In addition, the first water pipe module for providing a bypass path of the heating water in the event of overpressure in the flow path and heating pipe of the heating water according to the heating or hot water mode, and the flow path and heating water of the direct and hot water in the hot water mode By configuring the second water pipe module providing a supplementary flow path of each module unit to be detachable to the hot water supply heat exchanger, it is possible to simplify the assembly structure between the water pipe parts and reduce the number of parts to improve the productivity of the product.

In addition, a heating water discharge guide portion and a hot water discharge guide portion are formed on the front plate of the hot water heat exchanger so that the space between the heating water inlet pipe and the heating water outlet pipe and the space between the direct water inlet pipe and the hot water supply pipe are located close to each other. By configuring the 1st water pipe module and the 2nd water pipe module to be detachable from the hot water heat exchanger, the boiler can be miniaturized and the connection flow path of the water pipe can be shortened to reduce the pressure loss due to the pressure drop of the fluid, thereby reducing the heat exchange of the boiler. It can improve performance.

1 is a view schematically showing a configuration of a boiler having a check valve integrated with a water pipe according to the present invention;

2 is a perspective view of the main portion of the boiler according to the present invention,

FIG. 3 is a perspective view of the module separated from FIG. 2;

4 is an exploded perspective view of the heat exchanger illustrated in FIG. 3;

5 is a front view of the heat exchanger,

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a cross-sectional view taken along the line B-B of FIG.

8 is a plan view of the first water pipe module shown in FIG.

9 is a cross-sectional view taken along the line C-C of FIG.

10 is a cross-sectional view taken along the line D-D of FIG. 8;

11 is a cross-sectional view taken along the line E-E of FIG. 8;

12 is an exploded perspective view of the check valve shown in FIG. 11;

13 is a view showing a flow path of the heating water in the heating mode in the boiler according to the present invention,

14 is a view showing a flow path of heating water and direct water / hot water in the hot water mode in the boiler according to the present invention;

15 is a view showing a flow path in which the heating water is bypassed to prevent overpressure when the heating pipe on the heating water supply side or the hot water heat exchanger side is blocked in the boiler of the present invention.

** Explanation of Codes **

10: expansion tank 20: circulation pump

30: main heat exchanger 100: hot water heat exchanger

110: front plate

110a, 120a, 130a, 140a, 150a, 160a: flat part

110b, 120b, 130b, 140b, 150b, 160b: Flange

110c: heating water discharge guide portion 110d: hot water discharge guide portion

111,121,131,141,151: heating water inlet

131a, 132a, 143a, 144a, 151a, 161a: boss part

112,122,132,142,152: Heating water discharge hole

113,123,133,143: Direct inflow hole 114,124,134,144: Hot water discharge hole

120: flat plate 130: first plate

135,155: first bead 145,165: second bead

140: second plate 150: the first euro conversion plate

160: second flow path conversion plate 200: first water pipe module

201: housing 210: three-way valve

211: motor 212: cam member

213: shaft 214: valve body

215: elastic member 216: valve seat

216a, 216b: locking jaw 220: check valve

221 body portion 222 valve body

223: elastic member 224: fastening portion

300: second water pipe module 310: flow sensor

320: supplemental water valve L1: heating water main supply pipe

L2: Heating water supply pipe L3: Heating water return pipe

L4: Heating water circulation inlet pipe L5: Heating water circulation inlet pipe

L6: heating water inlet pipe L7: heating water outlet pipe

L8: Bypass pipe L9: Direct water supply pipe

L10: direct inflow pipe L11: hot water supply pipe

L12: water supplement pipe P1: heating water flow path

P2: Direct Euro

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the boiler according to an embodiment of the present invention, the expansion tank 10 in which the heating water returned through the heating requirements in the heating mode or the heating water circulating in the boiler in the hot water mode is stored (10) ), A circulation pump 20 for pumping the heating water discharged from the expansion tank 10 in one direction, and a main heat exchanger 30 for heating the heating water introduced through the circulation pump 20 by the combustion heat of the burner. ), A hot water supply heat exchanger 100 for supplying hot water by heat exchange between the heating water heated in the main heat exchanger 30 and direct water, and the heating water supplied from the main heat exchanger 30 requires heating elements or a hot water supply heat exchanger. First water pipe module 200 for providing a bypass path for preventing the occurrence of overpressure in the heating pipe and the heat exchanged via the 100, and the flow of hot water and hot water via the hot water supply heat exchanger (100) And replenishment of heating water It is configured to include a second water pipe module 300 for providing a.

In addition, the reference numeral 'L1' shown in FIG. 1 is a heating water main supply pipe in which the heating water heated in the main heat exchanger 30 is supplied to the three-way valve 210, and 'L2' is heated in the three-way valve 210 in the heating mode. 'L3' is a heating water supply pipe through which heating water is supplied to the required place, 'L3' is a heating water return pipe through which the heating water is returned to the expansion tank 10, and 'L4' is a heating water discharged from the expansion tank 10. Heating water circulation inlet pipe supplied to the pump 20, 'L5' is the heating water circulation outlet pipe supplied from the circulation pump 20 to the main heat exchanger 30, 'L6' is a three-way valve in the hot water mode Heating water inlet pipe supplied with the heating water from the hot water

supply heat exchanger

100, 210, 'L7' is a heating water outlet pipe that joins the heating water from the hot water heat exchanger 100 to the heating water return pipe (L3), 'L8 'Is heated from the three-way valve 210 to the heating water return pipe (L3) to prevent overpressure in the heating pipe The bypass pipe is discharged, 'L9' is a direct water supply pipe that flows into the boiler, 'L10' is a direct water flow into the hot water supply heat exchanger 100 from the flow sensor 310 to detect the flow of the direct water inflow Tube, 'L11' is a hot water supply pipe in which the hot water heated in the hot water supply heat exchanger 100 is supplied to the hot water source, 'L12' is a direct water flow into the expansion tank (10) to the water supply pipe (L9) when the heating water is insufficient. Each of the inlet water supplement pipes is shown.

As shown in FIG. 3, in the present invention, the first water pipe module 200 and the second water pipe module 300 are each constructed in a module unit, and are detachably assembled to the hot water supply heat exchanger 100 so that the number of the heating waters is increased. It is designed to simplify the piping and the structure of the water piping of the direct and hot water. In this configuration, the first water pipe module 200 is supplied to the heating source through the heating water supply pipe (L2), the heating water is heated in the main heat exchange (30) and supplied through the heating water main supply pipe (L1). Or, three-way valve 210 for switching the flow path of the heating water to selectively supply to the hot water supply heat exchanger 100 through the heating water inlet pipe (L6), the three-way valve 210 and the heating water return pipe ( Bypass pipe (L8) for connecting L3) and the heating water inlet pipe provided in the bypass pipe (L8) connected to the heating source connected to the heating water supply pipe (L2) or the hot water supply heat exchanger (100) side. When the pipeline of L6 is closed and overpressure occurs in the heating pipe, a check valve 220 is provided to allow the flow of the fluid only in one direction from the three-way valve 210 toward the heating water return pipe L3.

The second water pipe module 300, the flow sensor 310 for detecting the flow of the direct water flowing through the direct water supply pipe (L9) in the hot water mode, and supplements the heating water by receiving the direct water when the lack of heating water The water replenishment pipe (L12) and the replenishment water valve 320 is provided in the pipeline of the water replenishment pipe (L12) to regulate the flow of direct water is provided.

4 to 7, the hot water heat exchanger 100 includes a plurality of

plates

110, 120, 130-1, 140-1, 130-2, 140-2, 130-3, 140-3, 130-4, 140-4, 150, and 160. It consists of a plate heat exchanger formed by separating the heating water flow passage (P1) and the direct flow passage (P2) is separated from each other so that the flow alternately in each layer and the heat exchange takes place. 3 and 4, solid arrows indicate the flow paths of the heating water, and dotted arrows indicate the flow paths of the direct water and the hot water, and in FIG. 6 and 7, the heating water flow paths P1 and the direct water flow paths P2 are different from each other. It is separated and shows the shape formed alternately in each layer.

Referring to FIG. 4, the plurality of

plates

110, 120, 130-1, 140-1, 130-2, 140-2, 130-3, 140-3, 130-4, 140-4, 150, and 160 are laminated with a flat plate 120 behind the front plate 110 and the flat plate. At the rear of the plate 120, the first plates 130; 130-1, 130-2, 130-3, 130-4 and the second plates 140; 140-1, 140-2, 140-3, 140-4 are alternately stacked. That is, the first plate 130-1, the second plate 140-1, the first plate 130-2, the second plate 140-2, and the first plate at the rear of the flat plate 120. 130-3), the second plate 140-3, the first plate 130-4, and the second plate 140-4 are sequentially stacked. In the present embodiment, the first plate 130 and the second plate 140 has four pairs of plates, but the first plate 130 and the second plate 140 are stacked. Of course, the number can be configured differently.

In the rear, a first flow path switching plate 150 for switching the flow path of hot water from the rear to the front, and a second flow path switching plate 160 for switching the flow path of the heating water from the rear to the front are stacked.

The plurality of

plates

110, 120, 130-1, 140-1, 130-2, 140-2, 130-3, 140-3, 130-4, 140-4, 150, and 160 are rectangular

flat portions

110a, 120a, 130a, 140a, 150a, and 160a, respectively, in front of the edges thereof. And

flanges

110b, 120b, 130b, 140b, 150b, and 160b protruding a predetermined length, and the plates stacked adjacent to each other in front and rear are welded between the

flanges

110b, 120b, 130b, 140b, 150b, and 160b. Combined, adjacently stacked plates are spaced at regular intervals to form the heating water flow path (P1) and the direct flow passage (P2) at the same time the fluid flowing through the heating water flow path (P1) and the direct flow passage (P2) to the outside To prevent leakage.

The hot water supply heat exchanger (100) is heated on the front plate (110) of the hot water heat exchanger (100) to facilitate attachment and detachment of the first water pipe module (200) and the second water pipe module (300) configured in a modular unit. The dual

flow path structures

110c and 110d forming the water discharge passage and the hot water discharge passage are formed, that is, the heating water discharge guide portion 110c and the hot water discharge guide portion 110d.

In this configuration, a heating water inlet hole 111 connected to the heating water inlet tube L6 is formed at one lower side of the front plate 110, and a heating water outlet tube is formed at one side of the heating water inlet hole 111. A heating water discharge hole 112 connected to the L7 is formed, and the heating water discharge guide part 110c discharges forward toward the other upper part of the front plate 110 after passing through the heating water flow path P1. It is formed to guide the heating water to the heating water discharge hole (112).

And, the other side of the lower side of the front plate 110 is formed with a direct inlet hole 113 connected to the direct inlet pipe (L10), the upper portion of the front plate 110 is not formed the heating water discharge guide portion (110c). The hot water discharge hole 114 connected to the hot water supply pipe (L11) is formed at a position close to the direct water inflow hole 113 of the non-region, the hot water discharge guide portion 110d after passing through the direct flow path (P2) The hot water discharged forward toward the upper one side of the front plate 110 is formed to guide the hot water discharge hole (114).

The flat plate 120 stacked on the rear of the front plate 110, the heating water inlet hole 121 is formed on one side of the lower side, the heating water discharge hole 122 is formed on the other side of the upper side, the water directly to the other side Inlet hole 123 is formed, the hot water discharge hole 124 is formed on the upper side. The edge portion of the heating water discharge guide portion 110c and the hot water discharge guide portion 100d is welded by being in close contact with the flat portion 120a of the flat plate 120, and the heating water discharge guide portion 110c and the hot water. The inner portion of the edge portion of the discharge guide portion 100d protrudes forward to form a discharge passage of the heating water and hot water.

The first plate 130 stacked behind the flat plate 120 has a heating water inlet 131 formed at one lower side thereof, a heating water discharge hole 132 formed at the other upper side thereof, and a lower side of the first plate 130 formed at the lower side thereof. Direct inflow hole 133 is formed, the hot water discharge hole 134 is formed on the upper side. Then, the front surface of the heating water inlet hole 131 and the heating water outlet hole 132 of the first plate 130 protrudes forward to the heating water inlet hole 121 and the heating water outlet hole of the flat plate 120 ( Boss portions 131a and 132a which are in close contact with the edges of 122 are formed, and a plurality of first beads 135 bent toward one side are formed to protrude forward in the planar portion 130a of the first plate 130. have.

The second plate 140 stacked behind the first plate 130 has a heating water inlet 141 formed at one lower side thereof, and a heating water discharge hole 142 formed at the other upper side thereof. The direct inflow hole 143 is formed at the side, and the hot water discharge hole 144 is formed at the upper one side. In addition, the edges of the direct water inflow hole 143 and the hot water discharge hole 144 of the second plate 140 protrude forward and are connected to the direct inflow hole 133 and the hot water discharge hole 134 of the first plate 130.

Boss portions

143a and 144a that are in close contact with the edge are formed, and a plurality of second beads 145 bent in a direction opposite to the first bead 135 is formed in the planar portion 140a of the second plate 140. Formed.

The heating water flow passage P1 and the direct flow passage P2 are formed by the boss portions 131a and 132a formed on the first plate 130 and the

boss portions

143a and 144a formed on the second plate 140. Each can be separated and formed alternately. That is, direct flow is possible between the flat plate 120 and the first plate 130 by the boss portions 131a and 132a formed in the first plate 130, but the flow of heating water is blocked, so the direct flow path ( P2) is formed, and the

boss portions

143a and 144a formed on the second plate 140 allow the flow of heating water between the first plate 130 and the second plate 140, but the flow of the direct water is The heating water flow path P1 is cut off.

In addition, when the first plate 130 and the second plate 140 overlap, the first bead 135 formed on the first plate 130 and the second bead 145 formed on the second plate 140. The heat exchange efficiency between the heating water and the direct water is improved by promoting the generation of turbulence in the flow of the fluid flowing through the overlapping gaps of.

The first plate 130 and the second plate 140 alternately overlap with each other, and a lower one side of the first flow path conversion plate 150 stacked behind the second plate 140-4 positioned at the rearmost side. The heating water inlet hole 151 is formed in the upper side, the heating water discharge hole 152 is formed, the other side of the lower side and the upper one side is formed in the shape of the front and rear, the second plate 140-4 and the first In the direct flow path P2 between the flow path switching plates 150, the direct flow path is switched to face forward. In addition, a plurality of first beads 155 that are bent to one side and protrude forward are formed in the planar portion 150a of the first flow path conversion plate 150.

The planar portion 160a of the second channel switch plate 160, which is stacked behind the first channel switch plate 150, has a shape in which the entire area is blocked in the front and rear directions, and thus the first channel switch plate 150 and the second channel switch plate 150 are stacked. In the heating water flow path P1 between the flow path switching plate 160, the flow path of the heating water is switched to face forward. In addition, a plurality of second beads 165 that are bent to the other side and protrude forward are formed in the planar portion 160a of the second flow path conversion plate 160.

According to the configuration of the hot water supply heat exchanger 100 as described above, the inside of the plurality of stacked plates (110,120,130-1,140-1,130-2,140-2,130-3,140-3,130-4,140-4,150,160) is in communication with the lower one side from the other to the upper side The water flow path P1 and the direct flow path P2 communicating from the other side to the upper side of the lower part are alternately formed, and the fluid flowing through the overlapping gap between the

first bead

135 and 155 and the

second bead

145 and 165 flows. By promoting the generation of turbulence in the flow it is possible to improve the heat exchange efficiency between the heating water and direct water.

In addition, the front plate 110, the heating water to guide the heating water discharged after passing through the heating water flow path (P1) to the heating water discharge hole 112 formed in close proximity to one side of the heating water inlet hole (111). By providing a discharge guide (110c) and hot water discharge guide (110d) to guide the hot water discharged after passing through the direct flow path (P2) to the hot water discharge hole 114 formed in the position as close as possible to the direct water inlet (113) The first water pipe module 200 and the second water pipe module 300 may be detachably attached to the hot water heat exchanger 100.

In addition, by forming a close interval between the heating water inlet pipe (L6) and the heating water outlet pipe (L7) connected to the hot water supply heat exchanger 100, the heating water inlet pipe (L6) and heating water outlet pipe (L7). The size of the first water pipe module 200 coupled to the can be reduced.

Similarly, the gap between the direct water inflow pipe L10 and the hot water supply pipe L11 connected to the hot water supply heat exchanger 100 is also close to each other, so that the second water coupled to the direct water inflow pipe L10 and the hot water supply pipe L11 is formed. The size of the piping module 300 can also be miniaturized.

In this case, the heating water inflow hole 111 and the heating water discharge hole 112 are formed at one side of the hot water supply heat exchanger 100, and the direct water inflow hole 113 and the hot water discharge hole 114 are introduced into the heating water. It is formed at a position spaced to the other side in the area where the ball 111 and the heating water discharge hole 112 is formed, the first water pipe module 200 and the second water pipe module 300 of the hot water supply heat exchanger (100) It can be coupled to both sides.

Hereinafter, referring to FIGS. 8 to 12, the flow path switching and bypass structure of the heating water provided in the first water pipe module 200 will be described in more detail.

The first water pipe module 200 is a heating water supply pipe (L2) or the housing connected to the lower side of the housing 201, the flow path of the heating water flowing from the heating water main supply pipe (L1) connected to one side of the housing 201 Three-way valve 210 for selectively switching to the heating water inlet pipe (L6) connected to the other side of the 201 is provided, the bypass pipe on the side wall of the housing 201 located on one side of the three-way valve 210 (L8) is communicated, the check valve 220 is provided in the pipeline of the bypass pipe (L8).

In this way, the housing 201 of the first water pipe module 200 is connected to the heating water main supply pipe L1, the heating water supply pipe L2, the heating water inlet pipe L6, and the bypass pipe L8. Is formed integrally, so that the water pipe structure of the heating water can be compactly constructed, and the length of the pipe of the water pipe can be shortened compared to the structure in which the conventional water pipe is individually installed. It can improve the thermal efficiency.

The three-way valve 210, the motor 211, the cam member 212 coupled to the rotation shaft, the shaft 213 is supported by the upper and lowered by the cam member 212, and the shaft 213 An elastic member for applying an upward elastic force to the shaft 213 to maintain the valve body 214 is coupled to the lower outer surface of the cam and the upper end of the shaft 213 in contact with the lower end of the cam member 212 215 and an upper locking jaw 216a for locking the upper end of the valve body 214 and a lower locking jaw 216b for locking the lower end of the valve body 214 as the shaft 213 moves up and down. It includes a valve seat 216 for selectively switching the flow path of the heating water flowing into the interior of the housing 201 through the heating water main supply pipe (L1) to the heating water supply pipe (L2) or heating water inlet pipe (L6). It is configured by.

The bypass pipe L8 is formed to penetrate through the side wall of the housing 201 in the area between the upper locking jaw 216a and the lower locking jaw 216b of the valve seat 216 so as to communicate with the heating water return pipe L3. do.

11 and 12, the check valve 220 includes a body portion 221 having an inlet 221a communicating with a bypass pipe L8 formed on a sidewall of the housing 201, and the body. A valve body 222, which is composed of a shaft portion 222a and a valve portion 222b inserted into the portion 221 to open and close a flow path of heating water flowing through the inlet 221a, and an outer side of the shaft portion 222a. An insertion groove 224a having an elastic member 223 interposed therebetween and providing an elastic force to the valve portion 222b in a direction to close the flow path of the heating water and the shaft portion 222a of the valve body 222. It is formed therein and includes a fastening portion 224 fastened to the body portion 221.

According to the configuration of the check valve 220 as described above, the valve only when the water pressure of the heating water flowing into the inlet (221a) of the body portion 221 exceeds the elastic force of the elastic member 223 to generate an overpressure in the heating pipe. The sieve 222 opens the flow path of the heating water so that the heating water passes through the bypass pipe L8 and flows to the heating water return pipe L3, and the water pressure of the heating water is equal to or less than the elastic force of the elastic member 223. In the case of functioning, the valve body 222 maintains the state which closed the flow path of heating water.

Hereinafter, the flow paths of the heating water and the hot water in the heating mode, the hot water mode, and the overpressure of the boiler will be described with reference to FIGS. 13 to 15.

Referring to FIG. 13, in the heating mode, the heating water heated in the main heat exchanger 30 is supplied to the three-way valve 210 along the heating water main supply pipe L1, and in this case, the three-way valve 210 is introduced into the heating water. Closed to the pipe (L6) side and is set to open to the heating water supply pipe (L2) side, the heating water via the three-way valve 210 is supplied to the heating source along the heating water supply pipe (L2). The heating water passing heat through the heating requirements is introduced into the expansion tank (10) through the heating water return pipe (L3), the heating water stored in the expansion tank (10) is heated by the operation of the circulation pump (20) Along the water circulation inlet pipe (L4) and the heating water circulation outlet pipe (L5) is supplied to the main heat exchanger (30) is heated and then circulated flow.

Referring to FIG. 14, in the hot water mode, the heating water heated in the main heat exchanger 30 is supplied to the three-way valve 210 along the heating water main supply pipe L1, and in this case, the three-way valve 210 is a heating water supply pipe. Closed to the (L2) side and set to open to the heating water inlet pipe (L6) side, the heating water via the three-way valve 210 is supplied to the hot water supply heat exchanger 100 along the heating water inlet pipe (L6). The heating water that transfers heat to the direct water from the hot water supply heat exchanger 100 flows into the expansion tank 10 along the heating water outlet pipe L7 and the heating water return pipe L3 and the heating water stored in the expansion tank 10. Is supplied to the main heat exchanger 30 along the heating water circulation inlet tube (L4) and the heating water circulation outlet tube (L5) by the operation of the circulation pump 20 is heated and circulated flow.

At the same time, the direct water flowing through the direct water supply pipe L9 is supplied to the hot water supply heat exchanger 100 through the direct water inflow pipe L10 via the flow sensor 310, and passes through the hot water supply heat exchanger 100, Heated hot water is supplied to the hot water source through the hot water supply pipe (L11).

Referring to Figure 15, the heating water supply pipe (L2) is connected to the heating source in the three-way valve 210 in the heating mode is closed, or the heating water is connected to the hot water supply heat exchanger 100 side from the three-way valve 210 in the hot water mode. When the inflow pipe L6 is closed and overpressure occurs in the heating pipe, the check valve 220 provided in the pipeline of the bypass pipe L8 is opened to open the three-way valve 210 through the heating water main supply pipe L1. The heating water supplied to) is introduced into the expansion tank 10 through the bypass pipe (L8) and the heating water return pipe (L3) to release the overpressure generated in the heating pipe. Therefore, the durability of the circulation pump 20 and other parts, which are caused when overpressure is generated in the heating pipe, may be prevented.

In the present specification, the case where the heat exchange between the heating water and the direct water is performed in the hot water supply heat exchanger 100 is taken as an example, but the hot water supply heat exchanger 100 may be applied to a case where heat exchange between two different fluids is performed in addition to water. .

As described above, the present invention is not limited to the above-described embodiments, and modifications apparent by those skilled in the art to which the present invention pertains may be made without departing from the technical spirit of the present invention claimed in the claims. It is possible that such modifications are within the scope of the present invention.

Claims

In the boiler having a main heat exchanger (30) for heating the heating water by the combustion heat of the burner, and a hot water supply heat exchanger (100) for supplying hot water by heat exchange between the heating water and the direct water heated in the main heat exchanger (30) ,

Three-way valve 210 for switching the flow path of the heating water to supply the heating water heated in the main heat exchanger 30 to the heating source, or selectively to the hot water supply heat exchanger (100) side;

A bypass pipe (L8) connecting the three-way valve (210) and a heating water return pipe (L3) for connecting the heating source and the main heat exchanger (30); And

When the heating pipe (L2) provided in the pipeline of the bypass pipe (L8) connected to the heating source side, or the heating pipe (L6) connected to the hot water supply heat exchanger (100) is closed and overpressure occurs, And a check valve 220 allowing fluid flow in only one direction from the three-way valve 210 toward the heating water return pipe L3.

The three-way valve 210 and the bypass pipe (L8) and the check valve 220 is a boiler having a water pipe integrated line check valve, characterized in that provided in the same water pipe module integrally.
The method of claim 1,

Heating pipes (L4, L5) connected to the heating water return pipe (L3) is a water pipe pipe, characterized in that the circulation pump 20 for pumping the heating water in one direction toward the main heat exchanger (30) side Boiler with integrated check valve.
The method of claim 1,

When the heating pipe (L2) connected to the heating source side, or the heating pipe (L6) connected to the hot water supply heat exchanger 100 is closed to overpressure occurs,

The heating water heated in the main heat exchanger 30 is supplied to the three-way valve 210 and then flows into the bypass pipe L8 connected to one side of the three-way valve 210, and the check valve 220. After passing through), flows into the expansion tank 10, the heating water stored in the expansion tank 10 is circulated to the main heat exchanger 30 by the circulation pump 20, the overpressure generated in the heating pipe Boiler having a check valve integral with the water pipe, characterized in that the prevention.
The method of claim 1,

In the hot water supply heat exchanger 100, a plurality of plates are stacked and heating water and direct water flow alternately in each layer, and the heating water flow path P1 and the direct water flow path P2 are separated from each other so that heat exchange occurs. Formed,

The front plate 110 located in front of the plurality of plates, the heating is introduced into the heating water inlet pipe (L6) formed on the lower side of the front plate 110 and discharged after passing through the heating water flow path (P1) A heating water discharge guide part 110c forming a flow path of the heating water so that the water outlet pipe L7 is located close to the heating water inlet pipe L6, and a direct inflow formed at the other lower side of the front plate 110; The hot water discharge guide part 110d which forms a flow path of hot water so that the hot water supply pipe L11 introduced into the pipe L10 and discharged after passing through the direct water flow path P2 is located close to the direct water inflow pipe L10. Is formed;

One side of the hot water heat exchanger 100 and the heating water inlet pipe (L6) and the heating water outlet pipe (L7) is assembled so that the detachable, the three-way valve 210 and the bypass pipe (L8) and the check valve 220 Is provided integrally, the first water pipe module 200 for providing a flow path for the heating water supplied from the main heat exchanger 30 is returned via the heating requirements or hot water supply heat exchanger (100);

A second water pipe is assembled so that one side of the hot water inlet pipe (L10) and the hot water supply pipe (L11) of the hot water supply heat exchanger 100 is detachable, and provides a flow path for the hot water and the hot water passing through the hot water heat exchanger (100). Module 300; Boiler having a check valve integrated with a water pipe.
The method of claim 4, wherein

On the lower side of the front plate 110, a heating water inlet hole 111 is connected to the heating water inlet pipe (L6) is formed,

One side of the heating water inlet hole 111, the heating water discharge hole 112 is connected to the heating water outlet pipe (L7) is formed,

The heating water discharge guide part 110c is integrally checked with a water pipe, characterized in that it is formed to guide the heating water discharged toward the other side of the upper side of the front plate 110 to the heating water discharge hole (112). Boiler with valve.
The method of claim 5,

The other side of the lower side of the front plate 110, a direct inlet hole 113 is connected to the direct inlet pipe (L10) is formed,

The hot water discharge hole 114 connected to the hot water supply pipe (L11) at a position close to the direct water inflow hole (113) of the region where the heating water discharge guide portion (110c) is not formed on the front plate (110). Is formed,

The hot water discharge guide unit 110d is provided with a water pipe integrated check valve, characterized in that it is formed to guide the hot water discharged toward the upper one side of the front plate 110 to the hot water discharge hole (114). One boiler.
The method of claim 6,

In the rear of the front plate 110, the heating water inlet hole 121 is formed on one side of the lower side, the heating water discharge hole 122 is formed on the other side of the upper side, the direct water inlet hole 123 is formed on the other side of the lower side , The flat plate 120 having the hot water discharge hole 124 is formed on the upper side,

An edge portion of the heating water discharge guide portion 110c and the hot water discharge guide portion 100d is in close contact with an edge portion of the flat plate 120, and an inner portion of the edge portion protrudes forward to form a discharge passage for heating water and hot water. Boiler having a check valve integral with the water pipe, characterized in that the forming.
The method of claim 7, wherein

A plurality of first plates 130 and a second formed at the rear of the flat plate 120 so that the boss portion located in the diagonal direction intersect the front and rear in such a way that the heating water flow passage P1 and the direct flow passage P2 are alternately formed. Plates 140 are alternately stacked,

On the first plate 130 and the second plate 140, a plurality of first beads 135 and second beads 145 bent in opposite directions are formed, and the first beads 135 and the second beads 145 are formed. A boiler having a water pipe integrated check valve, characterized in that configured to enable the flow of fluid in the overlapping gap of the bead (145).
The method of claim 8,

At the rear of the second plate 140 stacked at the rear end, the first flow path switching plate 150 for switching the direct flow path from the rear to the front and the flow path of the heating water are directed from the rear to the front. A boiler having a water pipe integrated check valve, characterized in that the second flow path conversion plate 160 to be sequentially stacked.
The method of claim 9,

The first flow path conversion plate 150, the heating water inlet hole 151 is formed on one side of the lower side, the heating portion discharge hole 152 is formed on the other side of the lower side, the other side and the upper one side is blocked in front and rear shape. Done,

The second flow path conversion plate 150 is a boiler having a water pipe integrated check valve, characterized in that the entire area is formed in the shape of the front and rear clogged.
The method of claim 4, wherein

The second water pipe module 300,

Flow sensor 310 for detecting the flow of the direct water flowing into the direct water inflow pipe (L10), water supply pipe (L12) for replenishing the heating water by receiving the direct water when the heating water is insufficient, and the water supplement Boiler with a water pipe integrated line check valve, characterized in that the supplementary water valve 320 is provided in the pipe line of the pipe (L12) to regulate the flow of water.