RU2676172C2 - Boiler with check valve, built into water pipeline - Google Patents

Abstract

FIELD: instrument engineering.SUBSTANCE: present invention includes: three-way valve configured to change the course of the heating water in order to selectively supply heating water, heated in the main heat exchanger, to the heating pipe connected to the place to be heated and to the heating pipe connected to the hot water heat exchanger. Bypass pipe connecting the three-way valve and a heating water return pipe connecting the place to be heated and the main heat exchanger. Bypass pipe made with the possibility of providing a channel separate from the heating pipe connected to the place to be heated, and a heating pipe connected to the hot water heat exchanger and formed on one side of the three-way valve. Check valve provided in the bypass pipe in order to allow the flow of fluid in only one direction from the three-way valve towards the heating water return pipe, when a heating pipe connected to the place to be heated, or a heating pipe connected to a heat exchanger for supplying hot water. First water pipeline module is equipped with a three-way valve, a by-pass pipe and a check valve, which are built into it, and are adapted to provide a channel, through which the heating water that is supplied from the main heat exchanger is returned through the place to be heated.EFFECT: object of the present invention is to provide a boiler having a check valve integrated in a water pipeline, the boiler being designed to simplify and miniaturize the structure of the water supply system.11 cl, 15 dwg

Description

Technical field

The present description relates to a boiler having a check valve integrated in the water pipe, and more particularly, to a boiler having a check valve integrated in the water pipe, which is configured to simplify and miniaturize the water supply structure by incorporating the bypass structure of the heating water into the module water supply, in which the bypass structure of the heating water is able to prevent the increase in water pressure inside the heating pipe above a predetermined level.

State of the art

In general, a boiler is a device that heats heating water through the heat of combustion of a burner, delivers heated heating water to a place to be heated for heating, and performs heat exchange between heated heating water and once-through water to supply warm water.

A conventional standard boiler is made up of a main heat exchanger configured to heat the heating water through the heat of combustion from the burner, a circulation pump installed in the heating water channel and configured to force the heating water to circulate, a three-way valve configured to change the course of the heating water and supply of heating water, which is heated in the main heat exchanger, optionally to the place to be heated, and to the hot water heat exchanger, heat exchange a hot water heater configured to supply warm water through heat exchange between the heating water heated in the main heat exchanger and the once-through water, and an expansion tank configured to collect and store the heating water returning through the place to be heated and the heating water circulating through a hot water heat exchanger.

When the user arbitrarily closes the heating pipe, or foreign objects accumulate inside the heating pipe, causing the heating pipe to become clogged, while the boiler, which is made as described above, is installed and is activated in heating mode or in warm water mode, it is created inside the heating pipe increased pressure exceeding the permissible pressure, so that damage to the components of the boiler occurs, which includes a circulation pump and the like. A configuration for preventing overpressure inside the heating pipe is disclosed in Korean published patent application No. 1998-016052, wherein the configuration is such that a bypass hole is formed on one side of the outlet pipe between two upper and lower opening and closing openings that are formed inside the outlet pipe. a bi-directional circulation pump, and a bypass pipe is connected between the bypass hole and the return pipe of the heating water.

With this configuration, there is an advantage in which increased pressure inside the heating pipe can be prevented, while there are disadvantages in which, since the bypass pipe connecting the bi-directional circulation pump to the heating water return pipe is made with a generally open design through the bypass hole, part heating water, which is heated in the heating mode and the warm water mode, flows into the return pipe of the heating water through the bypass pipe and, thus, the efficiency s heat transfer may worsen, and additional manufacturing costs may increase due to the use of the bidirectional circulating pump, which is costly.

In this case, the hot water heat exchanger can be classified into a heat exchanger with finned tubes made in the form in which a plurality of tubes are inserted into the tank, and a plate-type heat exchanger, which is configured so that the plurality of plates are assembled into a bag, and the heating water and the flow water are alternately pass each layer inside the plates assembled in a package, thereby performing heat transfer between the heating water and the once-through water. The plate-type heat exchanger among these heat exchangers has the advantage that it is configured to simplify assembly and increase productivity by reducing the number of components and volume compared to finned tube heat exchangers.

The general design of such a plate-type heat exchanger, in which a plurality of plates are packaged, is disclosed in Korean registered patent No. 10-1151754 and Korean published patent application No. 10-2003-0071249.

A conventional standard plate-type heat exchanger according to the prior art is configured to increase heat exchange efficiency, and thus it is configured such that a heating water inlet and a heating water outlet are formed on the lower one side of the plate and its upper other side, respectively, and the direct-flow inlet water and a warm water outlet are formed on the lower other side of the plate and its upper one side, respectively, thereby allowing heating water and once-through water flow in the form of a counter flow and perform heat exchange with each other. However, since the traditional plate-type heat exchanger is configured such that the water supply pipe in which the heating water flows and the water supply pipe in which the direct-flow water and / or warm water flows are respectively formed in the diagonal positions of the plate, and thus are further separated from each other, the water supply system connected to the inlet of the heating water and the outlet of the heating water, and the water supply connected to the inlet of the once-through water and the outlet of the warm water are individually installed in the polo which are separated from each other, so that there is a problem in that the design of the heating water supply pipe and the construction of the water pipe for once-through water and / or warm water are complex and occupy a significant space for installation, which makes miniaturization difficult, and a pressure drop occurs due to the increase in the length of the pipeline for water, which leads to a deterioration in thermal efficiency.

Description

Technical problem

In order to solve the above problems, the purpose of the present description is to provide a boiler having a check valve integrated in the water pipe, which is configured to simplify and miniaturize the heating water supply structure by incorporating a heating water bypass structure that is able to prevent an increase in water pressure inside the heating pipe above a given level, into the water supply module.

Another objective of the present description is to provide a boiler having a check valve integrated in the water pipe, which is configured to improve product performance by providing each of the functional parts of the boiler water supply with a modular unit in order to simplify the assembly structure of the water supply components.

Another objective of the present description is to provide a boiler having a check valve integrated in the water pipe, which is configured to improve the heat transfer characteristics by shortening the pipe connecting the components of the water pipe to each other in order to reduce the pressure drop.

Technical solution

In order to accomplish the above tasks, a boiler having a check valve integrated in the water pipe according to the present description, which is provided with a main heat exchanger 30 configured to heat the heating water by the heat of combustion of the burner, and a hot water heat exchanger 100 configured to supply warm water by heat exchange between the heating water heated in the main heat exchanger 30 and the once-through water includes a three-way valve 210 configured to change the course of the heating vayuschey water, in order to selectively feeding the heating water heated in the main heat exchanger 30 to a place to be heated, the heat exchanger 100 and the hot water; a bypass pipe L8 configured to connect the three-way valve 210 to the heating water return pipe L3, which connects the place to be heated to the main heat exchanger 30; and a check valve 220 provided in the bypass pipe L8 and configured to provide fluid flow in only one direction from the three-way valve 210 to the heating water return pipe L3 when increased pressure is created by closing the heating pipe L2 connected to the site to be heated, or a heating pipe L6 connected to a hot water heat exchanger 100, in which a three-way valve 210, a bypass pipe L8 and a check valve 220 are integrated inside the same module in oprovoda.

A circulation pump 20 configured to forcibly move the heating water towards the main heat exchanger 30 in one direction can be provided in the heating pipes L4 and L5 connected to the return pipe L3 of the heating water.

When the increased pressure is created by closing the heating pipe L2 connected to the place to be heated or the heating pipe L6 connected to the hot water heat exchanger 100, the heating water heated in the main heat exchanger 30 can be supplied to the three-way valve 210, to flow into the bypass pipe L8, communicating with one side of the three-way valve 210, to pass the check valve 220 and then flow into the expansion tank 10, and the heating water stored in the expansion tank 10 may circulate and flow to the main heat exchanger 30 by means of a circulation pump 20, so that the creation of increased pressure inside the heating pipe can be prevented.

The hot water heat exchanger 100 can be made in the form of a plate type heat exchanger in which the channel (passage) P1 of the heating water and the channel (passage) P2 of the once-through water are formed separately from each other by collecting a plurality of plates in a bag (stacking) and, thus , heating water and once-through water are able to alternately flow in each layer inside the stacked plates, so as to cause heat exchange between the heating water and once-through water, in which the front plate 110, which is located on the front Orone among the plurality of plates, may be provided with a heating water discharge guide portion 110c, in which a heating water outlet pipe L7 is arranged so as to be located near the heating water inlet pipe L6 to form a heating water channel in order to allow the heating water to flow into the inlet pipe L6 heating water, which is formed on the lower one side of the front plate 110, and is allowed to be discharged after the passage of the heating water channel P1, and the warm water discharge guide portion 110d to which the first warm water supply pipe L11 is arranged to be arranged near the inlet pipe L10 of the once-through water in order to form a channel of warm water in order to allow the once-through water to flow into the inlet pipe L10 of the once-through water which is formed on the lower other side of the front plate 110 to be discharged after passage of direct-flow water channel P2, and in which the boiler may include a first water supply module 200 having one side that is removably mounted on the heating water inlet pipe L6 and the heating outlet pipe L7 hot water heat exchanger 100, equipped with a three-way valve 210, a bypass pipe L8 and a check valve 220, which are built into it, and configured to provide a channel through which the heating water that is supplied from the main heat exchanger 30 is returned through the place to be heated or a hot water heat exchanger 100; and a second water supply module 300 having one side that is removably mounted to the in-line water inlet pipe L10 and the warm water supply pipe L11, and configured to provide a channel through which each of the once-through water and warm water passes the hot water heat exchanger 100.

The heating water inlet 111 connected to the heating water inlet pipe L6 may be formed on the lower one side of the front plate 110, the heating water outlet 112 connected to the heating water outlet pipe L7 may be formed on one side of the heating water inlet 111 , and the heating water discharge guide portion 110c may be formed to direct the heating water, which is discharged in a forward direction toward the upper other side of the front plate 110, towards usknomu heating water outlet 112.

The in-line water inlet 113 connected to the in-line water inlet pipe L10 may be formed on the lower other side of the front plate 110, the warm water outlet 114 may be formed in the upper portion of the front plate 110 and connected to the warm water supply pipe L11 in the region in which a heating water drainage guide portion 110c is not formed, in the vicinity of the in-line water inlet 113, and a warm water drainage guide portion 110d may be formed to direct the warm water that I is given in a forward direction toward the upper front one side of the plate 110 to the outlet 114 of warm water.

The flat plate 120 may be packaged (stacked) behind the front plate 110, in which the heating water inlet 121 may be formed on the lower one side of the flat plate 120, and the heating water outlet 122 may be formed on the upper other side of the flat plate 120, in-line water inlet 123 may be formed on the lower other side of the flat plate 120, and warm water outlet 124 may be formed on the upper one side of the flat plate 120, and the perimeter of the edge of each Both the heating water discharge guide portion 110c and the warm water discharge guide portion 110d (not 100d !?) can come into close contact with the flat plate 120, and the inner portion of the edge can protrude forward to form an outlet channel of each of the heating water and warm water.

The plurality of first plates 130 and second plates 140, each of which is formed to ensure that protruding parts located in the diagonal direction intersect in the forward and backward directions, can be alternately packaged (stacked) behind the flat plate 120, thereby forming the heating water channel P1 and the direct-flow water channel P2, and a plurality of first flanges 135 and second flanges 145 that are curved in the opposite direction can be respectively formed on the plurality of first plates 130 and second plates 140 to be configured to provide fluid flow through overlapping gaps between the plurality of first collars 135 and second collars 145.

The first stroke change plate 150, configured to change the flow of the once-through water from the direction back to the forward direction, and the second stroke change plate 160, configured to change the course of the heating water from the back direction to the forward direction, can be sequentially assembled into a packet (folded into foot) behind the second plate 140, which is assembled into a bag in the most rear position.

The heating water inlet 151 may be formed on the lower one side of the first stroke changing plate 150, the heating water inlet 152 may be formed on the upper other side of the first stroke changing plate 150, and the lower other side and the upper one side may be formed. overlapped in the forward and backward directions, and the entire area of the second stroke change plate 150 can be made in a shape overlapped in the forward and backward directions.

The second water supply module 300 may be provided with a flow rate sensor 310 configured to measure the flow of the once-through water flowing into the once-through water inlet pipe L10, the water addition pipe L12 configured to receive the once-through water to add heating water when the heating water is insufficient, and an additional water valve 320 provided in the pipeline of the water addition pipe L12 and configured to suspend the flow of the once-through water.

Beneficial effects

According to a boiler having a check valve integrated in the water pipe according to the present description, a three-way valve configured to change the course of the heating water according to the heating mode and the mode of warm water, a heating water supply channel and a circulation channel connected to the three-way valve, and both the bypass pipe and the non-return valve, configured to prevent the creation of increased pressure inside the heating pipe, are integrated inside the first water supply module, so that the construction odoprovoda can be simplified, installation space can be reduced, and also damage to the components due to the creation of increased pressure may be previously prevented, thus improving the durability.

Also, the first water supply module, which is configured to provide a heating water flow channel according to the heating mode or warm water mode, and the heating water bypass channel when increased pressure is created inside the heating pipe, and a second water supply module, which is configured to provide a flow channel to each of direct-flow water and warm water and the channel for adding heating water in the mode of warm water, respectively, equipped with a modular unit and made with the possibility of removal from heat transfer ika hot water, so that the assembly design of plumbing components may be simplified, and the number of components can be reduced, thereby improving productivity.

In addition, the heating water discharge guide portion and the warm water discharge guide portion are formed on the front plate of the hot water heat exchanger to determine a location of a gap between the heating water inlet pipe and the heating water exhaust pipe located near the gap between the direct-flow water inlet pipe and the warm water supply pipe and thus, the first water supply module and the second water supply module are configured to remove hot water from the heat exchanger, so that miniaturization is the aft may be possible and additionally the connecting channel of the water supply can be shortened, thereby reducing the pressure drop according to the pressure drop of the fluid in order to improve the heat transfer characteristic.

Description of drawings

FIG. 1 is a schematic drawing showing a configuration of a boiler having a check valve integrated in a water pipe as described herein.

FIG. 2 is a perspective view in which most parts of the boiler according to the present description are connected.

FIG. 3 is a perspective view showing separated modular units of FIG. 2.

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

FIG. 5 front view of a heat exchanger.

FIG. 6 is a sectional view taken along line A-A of FIG. 5.

FIG. 7 is a sectional view along line B-B of FIG. 5.

FIG. 8 is a plan view of a first plumbing module shown in FIG. 3.

FIG. 9 is a sectional view taken along line C-C of FIG. 8.

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

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

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

FIG. 13 is a diagram showing a flow channel of heating water in a boiler heating mode according to the present description.

FIG. 14 is a diagram showing the flow channels of heating water and once-through water / warm water in the warm water mode of the boiler according to the present description.

FIG. 15 is a diagram showing a flow channel in which heating water is bypassed to prevent overpressure when the heating pipe is blocked in the boiler of the present description when the heating water is supplied or the hot water heat exchanger.

** Description of reference positions **

10: expansion tank

20: circulation pump

30: main heat exchanger

100: hot water heat exchanger

110: front plate

110a, 120a, 130a, 140a, 150a and 160a: flat parts of the surface

110b, 120b, 130b, 140b, 150b and 160b: flange parts

110c: heating water discharge guide portion

110d: warm water discharge guide portion

111, 121, 131, 141 and 151: heating water inlets

131a, 132a, 143a, 144a, 151a and 161a: protruding parts

112, 122, 132, 142 and 152: heating water outlet

113, 123, 133 and 143: straight-through water inlets

114, 124, 134 and 144: warm water outlets

120: flat plate 130: first plate

135 and 155: the first shoulders

145 and 165: second shoulder

140: second plate

150: first stroke change plate

160: second stroke change plate

200: first plumbing module

201: casing

210: three way valve

211: engine

212: cam element

213: shaft

214: valve body

215: elastic element

216: valve seat

216a and 216b: hook-shaped protrusions

220: check valve

221: body part

222: valve body

223: elastic element

224: mount

300: second plumbing module

310: flow rate sensor

320: additional water valve

L1: main heating water feed pipe

L2: heating water feed pipe

L3: heating water return pipe

L4: heating water inlet pipe

L5: heating water circulation exhaust pipe

L6: heating water inlet pipe

L7: heating water exhaust pipe

L8: Bypass pipe

L9: direct-flow water supply pipe

L10: straight-through water inlet pipe

L11: warm water feed pipe

L12: water addition pipe

P1: channel (passage) of heating water

P2: direct-flow water channel (passage)

Embodiments of the invention

Next will be described in detail the configuration and operation of the preferred embodiments of the present description with reference to the accompanying drawings.

Referring to FIG. 1-3, the boiler according to one embodiment of the present description is configured to include an expansion tank 10 configured to store heating water returning through a place to be heated in heating mode or heating water circulating inside the boiler in warm water mode, a circulation pump 20, made with the possibility of forced movement of the heating water discharged from the expansion tank 10 in one direction, the main heat exchanger 30, configured to heat the heating water that flows through the circulation pump 20, through the heat of combustion of the burner, a hot water heat exchanger 100, configured to supply warm water through heat exchange between the heating water heated in the main heat exchanger 30, and once-through water, the first water supply module 200, configured to providing a channel through which the heating water supplied from the main heat exchanger 30 is returned through the place to be heated or the hot water heat exchanger 100, and a bypass channel to prevent increasing pressure build-up inside the heating pipe, and a second water supply module 300, configured to provide direct-flow water channels and warm water passing through the hot water heat exchanger 100, and a channel for adding heating water.

Additionally, the reference position 'L1' shown in FIG. 1, indicates the main heating water supply pipe, through which the heating water that is heated in the main heat exchanger 30 is directed to the three-way valve 210, reference numeral 'L2' indicates the heating water supply pipe, through which the heating water is supplied from the three-way valve 210 to the place, to be heated in the heating mode, the reference position 'L3' denotes the return pipe of the heating water through which the heating water passing the place to be heated is returned to the expansion tank 10, the reference position 'L4' o indicates a heating water circulation inlet pipe through which heating water discharged from the expansion tank 10 is supplied to the circulation pump 20, reference numeral 'L5' denotes a heating water circulation exhaust pipe through which the heating water forcedly moved from the circulation pump 20 is supplied to main heat exchanger 30, reference numeral 'L6' denotes a heating water inlet pipe through which heating water is supplied from the three-way valve 210 to the hot water heat exchanger 100, reference position 'L7' denotes a heating water outlet pipe through which heating water is directed from the hot water heat exchanger 100 to a heating water return pipe L3, reference numeral 'L8' denotes a bypass pipe through which heating water is discharged from the three-way valve 210 to the return pipe L3 of heating water, in order to prevent an overpressure condition inside the heating pipe, reference numeral 'L9' denotes a supply pipe of once-through water through which once-through water flows inside the boiler, reference Position 'L10' refers to the inlet pipe of the once-through water through which the once-through water flows from the flow rate sensor 310, which measures the flow of the once-through water, to the hot water heat exchanger 100, reference numeral 'L11' denotes a warm water supply pipe through which warm water is heated in the hot water heat exchanger 100, it is supplied to the place to be heated, and the reference position 'L12 denotes a water addition pipe through which the once-through water flowing into the flow pipe of the once-through water L9 flows into the expansion tank 10.

As shown in FIG. 3, in the present description, the first plumbing module 200 and the second plumbing module 300 are respectively provided with modular units and removably installed in the hot water heat exchanger 100 in order to be able to simplify the design of each of the heating water supply pipe and the once-through / warm water supply pipe water. As a configuration for the above, the first plumbing module 200 is provided with a three-way valve 210 configured to change the course of the heating water in order to optionally supply heating water that is heated in the main heat exchanger 30 and then supplied through the main supply pipe L1 of the heating water, to the place to be heated, through the heating water supply pipe L2 and to the hot water heat exchanger 100 through the heating water inlet pipe L6, the bypass pipe L8 configured to connect the three-way valve 21 0 with a heating water return pipe L3, and a check valve 220 provided on the bypass pipe L8 and configured to provide fluid flow in only one direction from the three-way valve 210 to the heating water return pipe L3 when the heating water supply pipe L2 connected with the place to be heated, or the heating water inlet pipe L6 conduit connected to the hot water heat exchanger 100 is closed, causing increased pressure inside the heating pipe.

The second water supply module 300 is provided with a flow rate sensor 310 configured to measure the flow of the once-through water that flows through the flow pipe L9 of the once-through water in the warm water mode, the water addition pipe L12 configured to receive the once-through water to add heating water when the heating water not enough, and an additional water valve 320 provided on the pipe line of the water supply pipe L12 and configured to suspend the flow of once-through water.

Referring to FIG. 4-7, the hot water heat exchanger 100 is made in the form of a plate type heat exchanger in which the heating water channel (passage) P1 and the direct-flow water channel (passage) P2 are formed separately from each other by collecting a plurality of plates 110 into a bag (stacking), 120, 130-1, 140-1, 130-2, 140-2, 130-3, 140-3, 130-4, 140-4, 150 and 160 and, thus, heating water and once-through water are able to flow alternately in each layer inside the plates assembled in a package, so as to cause heat transfer between heating water and once-through water. In FIG. 3 and 4, the solid arrow indicates the flow channel of the heating water, the dotted arrow indicates the flow channel of each of the once-through water and warm water, and FIG. 6 and 7 show that the heating water channel P1 and the once-through water channel P2 are alternately formed in each layer spaced apart from each other.

Referring to FIG. 4, 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 are assembled in a bag, so that it is flat the plate 120 is packaged in the back of the front plate 110, and the first plate 130 (i.e. 130-1, 130-2, 130-3 and 130-4) and the second plate 140 (i.e. 140-1, 140-2, 140- 3 and 140-4) are alternately packaged in the back of the flat plate 120. That is, the first plate 130-1, the second plate 140-1, the first plate 130-2, the second plate 140-2, the first plate 130-3, the second plate 140-3, the first plate 130-4 and the second plate 140-4 are sequentially packaged in the back of the flat plate 120. However, in the present embodiment HTE implementation, an example of the case where the first plate 130 and second plate 140 are formed as four plate pairs, but the number of the first plate 130 and second plate 140 to be collected in the package may be formed other than as described above.

Further, a first stroke change plate 150 configured to change the course of warm water from a backward direction to a forward direction and a second stroke change plate 160 configured to change a course of heating water from a backward direction to a forward direction are assembled in a bag behind the first plate 130 and second plate 140.

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, respectively, include flat parts 110a, 120a , 130a, 140a, 150a and 160a of a rectangular surface, and flange portions 110b, 120b, 130b, 140b, 150b and 160b, each of which protrudes forward from the edge of each flat surface portion 110a, 120a, 130a, 140a, 150a and 160a, and the plates assembled adjacent to the bag in the forward and backward directions are welded between the flange portions 110b, 120b, 130b, 140b, 150b and 160b and are spaced at equal intervals from each other, so that a heating water channel P1 and a once-through water channel P2 are formed , and at the same time, the fluid flowing through the heating water channel P1 and the direct-flow water channel P2 is blocked so as not to leak out.

In order to provide easy attachment to or separation of the hot water heat exchanger 100 from the first water supply module 200 and the second water supply module 300, each of which is designed as a modular unit, a dual channel structure 110c and 110d, i.e., a heating water discharge guide portion 110c and a guide portion 110d hot water discharges, which respectively form a heating water outlet and a warm water outlet, are formed on the front plate 110 of the hot water heat exchanger 100.

As a configuration for the above, the heating water inlet 111 connected to the heating water inlet pipe L6 is formed on the lower one side of the front plate 110, the heating water outlet 112 connected to the heating water outlet pipe L7 is formed on one side of the inlet 111 of the heating water, and the heating water discharge guide portion 110c is formed to direct the heating water that passes through the heating water channel P1 and then is diverted in a forward direction ju to the upper other side of the front plate 110, to the outlet 112 of the heating water.

Further, a once-through water inlet 113 connected to a once-through water inlet pipe L10 is formed on the lower other side of the front plate 110, a warm water outlet 114 connected to the warm water supply pipe L11 is formed in place of an upper portion of the front plate 110, which is located near the inlet 113 of the once-through water among areas where the guide portion 110c for discharging the heating water is not formed, and the guide portion 110d for discharging warm water is formed to direct the warm water to oraya channel passes P2 direct water and then discharged in a forward direction toward the upper front one side of the plate 110 to the outlet 114 of warm water.

In a flat plate 120 assembled in a bag at the back of the front plate 110, a heating water inlet 121 is formed on the lower one side of the flat plate 120, a heating water outlet 122 is formed on the upper other side of the flat plate 120, a straight-through water inlet 123 is formed on the lower other side of the flat plate 120, and a warm water outlet 124 is formed on the upper one side of the flat plate 120. The edge of each of the guide portion 110c for discharging the heating water and the guide portion 110d (not 100d !?) the warm water discharge is firmly welded to the flat portion 120a of the surface of the flat plate 120, and the inner part of the edge of each of the heating water discharge guide portion 110c and the warm water discharge guide portion 110d (not 100d !?) protrudes forward to form heating water and warm drainage channels water.

In a first plate 130 assembled in a bag behind a flat plate 120, a heating water inlet 131 is formed on the lower one side of the first plate 130, a heating water outlet 132 is formed on the upper other side of the first plate 130, a straight-through water inlet 133 is formed on the lower other side of the first plate 130, and a warm water outlet 134 is formed on the upper one side of the first plate 130. Additionally, the protruding portions 131a and 132a that protrude forward to respectively enter the plane tight contact with the edges of the heating water inlet 121 and the heating water outlet 122 of the flat plate 120, respectively, formed at the edges of the heating water inlet 131 and the heating water outlet 132 of the first plate 130, and a plurality of first flanges 135, each of which is bent into one side, formed to protrude in a forward direction on a flat portion 130a of the surface of the first plate 130.

In a second plate 140, assembled in a bag behind the first plate 130, a heating water inlet 141 is formed on the lower one side of the second plate 140, a heating water outlet 142 is formed on the upper other side of the second plate 140, a once-through water inlet 143 is formed on the lower other side of the second plate 140, and a warm water outlet 144 is formed on the upper one side of the second plate 140. Additionally, protruding portions 143a and 144a that protrude forward to respectively enter into the tight contact with the edges of the in-line water inlet 133 and the warm water outlet 134 of the first plate 130, respectively, formed at the edges of the in-line water inlet 143 and the warm water outlet 144 of the second plate 140, and a plurality of second flanges 145, each of which is curved in the direction opposite to the direction of each of the first flanges 135 are formed on a flat portion 140a of the surface of the second plate 140.

The heating water channel P1 and the once-through water channel P2 can be alternately separately formed in each layer by the protruding parts 131a and 132a formed on the first plate 130 and the protruding parts 143a and 144a formed on the second plate 140. That is, the protruding parts 131a and 132a formed on the first plate 130 allow the flow water to flow between the flat plate 120 and the first plate 130 and prevent the heating water from flowing between them, so that the flow pipe P2 is formed, and the protruding portions 143a and 144a formed located on the second plate 140, allow the heating water to flow between the first plate 130 and the second plate 140 and prevent the flow of direct-flow water between them, so that the channel P1 of the heating water is formed.

Additionally, when the first plate 130 and the second plate 140 overlap each other, the creation of turbulence maintains a fluid flow passing and flowing through the overlapping gaps between the first shoulders 135 formed on the first plate 130 and the second shoulders 145 formed on the second plate 140, so that the heat exchange efficiency between heating water and once-through water is improving.

The first plate 130 and the second plate 140 alternately overlap multiple times, the heating water inlet 151 is formed on the lower one side of the first stroke changing plate 150, which is packaged behind the second plate 140-4 located in the rear position, the heating water outlet 152 formed on the upper other side of the first stroke change plate 150, and the lower other side and the upper one side are shaped in a overlap in the forward and backward directions, so that the flow of the once-through water changes in direction forward alignment in the flow path P2 channel between the second plate 140-4 and the first course change plate 150. Additionally, a plurality of first collars 155, each of which is bent to one side and protrudes forward, are formed on a flat portion 150a of the surface of the first stroke change plate 150.

The entire region of the flat portion 160a of the surface of the second stroke change plate 160, which is packaged in the back of the first stroke change plate 150, is formed in a shape that is overlapped in the forward and backward directions, so that the course of the heating water changes forward in the heating water channel P1 between the first a stroke change plate 150 and a second stroke change plate 160. Additionally, a plurality of second collars 165, each of which is bent to the other side and protrudes forward, are formed on a flat portion 160a of the surface of the second stroke change plate 160.

According to such a configuration of the hot water heat exchanger 100, the heating water channel P1 communicating from the lower one side to the upper other side and the flow pipe P2 communicating from the lower other side to the upper one side are alternately formed within the plurality of stacked plates 110 , 120, 130-1, 140-1, 130-2, 140-2, 130-3, 140-3, 130-4, 140-4, 150 and 160, and the creation of turbulence maintains the flow of fluid passing and current through overlapping gaps between the first shoulders 135 and 155 and the second shoulders 145 and 165, so that awn heat exchange between the heating water and once-through water may be increased.

Additionally, the front plate 110 is provided with a heating water discharge guide portion 110c configured to direct the heating water that is discharged after the passage of the heating water passage P1 to the heating water outlet 112 formed near one side of the heating water inlet 111, and the guide portion 110d the removal of warm water, made with the possibility of directing warm water, which is discharged after the passage of the channel P2 direct-flow water, to the outlet 114 of warm water, about azovannomu maximum near inlet 113 direct water so that the first module 200 and second module aqueduct water pipe 300, described above, could be adapted to easy attachment to or separation from heat exchanger 100 hot water.

Also, the gap between the heating water inlet pipe L6 and the heating water inlet pipe L7, which are connected to the hot water heat exchanger 100, is narrowed so that the size of the first water supply module 200, which is connected to the heating water inlet pipe L6 and the heating water outlet pipe L7, can be reduced.

Similarly, the gap between the once-through water inlet pipe L10 and the warm water supply pipe L11, which are connected to the hot water heat exchanger 100, is also narrow, so that the size of the second water supply module 300, which is connected to the once-through water inlet pipe L10 and the warm water supply pipe L11 may also be reduced.

In this case, the heating water inlet 111 and the heating water outlet 112 are formed on one side of the hot water heat exchanger 100, and the once-through water inlet 113 and the warm water outlet 114 are formed at positions that are spaced apart from the region in which the inlet 111 the heating water and the heating water outlet 112 are formed on its other side so that the first water supply module 200 and the second water supply module 300 can respectively be connected to both sides of the heat exchange Ennik 100 hot water.

Next, the design of changing the course and bypass of the heating water, which is provided inside the first water supply module 200, will be described in more detail with reference to FIG. 8 and 12.

The first water supply module 200 is provided with a three-way valve 210, optionally configured to change the course of the heating water that flows from the main heating water supply pipe L1 connected to one side of the casing 201 to the heating water supply pipe L2 connected to the lower side of the casing 201, or to a heating water inlet pipe L6 connected to the other side of the casing 201, the bypass pipe L8 communicates with a side wall of the casing 201, which is located on one side of the three-way valve 210, and a check valve 220 is provided in the pipe water bypass pipe L8.

As described above, the pipelines connected to the main heating water supply pipe L1, the heating water supply pipe L2, the heating water inlet pipe L6, and the bypass pipe L8 are integrated in the casing 201 of the first water supply module 200, so that the heating water supply structure can be compact. and further, the length of the water supply pipe can be reduced compared to a conventional construction in which the water supply pipes are installed separately, and the pressure drop of the heating water can be reduced, so that The boiler efficiency can be improved.

The three-way valve 210 is made including an engine 211, a cam element 212 connected to a rotating shaft of the engine 211, a shaft 213 having an upper end that is supported and raised by a cam element 212, a valve body 214 connected to the lower outer peripheral surface of the shaft 213, an elastic member 215 configured to apply an upwardly directed elastic force to the shaft 213 to maintain a state in which the upper end of the shaft 213 is in contact with the lower end of the cam member 212, and the saddle 21 6 of the valve, in which an upper hook-shaped protrusion 216a is formed, adapted to engage the upper end of the valve body 214, and a lower hook-shaped protrusion 216b, configured to engage the lower end of the valve body 214 according to the lifting of the shaft 213, and is configured to optionally change the course of the heating water that flows inside the casing 201 through the main heating water supply pipe L1 to the heating water supply pipe L2 and the heating water inlet pipe L6.

The bypass pipe L8 is formed to extend the side wall of the casing 201 in the region between the upper hook-shaped protrusion 216a and the lower hook-shaped protrusion 216b of the valve seat 216, thereby communicating with the heating water return pipe L3.

Referring to FIG. 11 and 12, the check valve 220 is configured to include a body portion 221 in which an inlet 221a is formed, communicating with a bypass pipe L8 that is formed on the side wall of the casing 201, a valve body 222 provided with a stem portion 222a and a valve portion 222b, which inserted inside the housing part 221, and configured to open and close the heating water channel flowing through the inlet 221a, an elastic element 223 located on the outer perimeter of the core part 222a and configured to provide control goy force on the valve portion 222b to overlap the channel direction of the heating water, and fixing 224, in which a recess 224a for insertion coupled with rod part 222a of the valve body 222, and connected to the body portion 221.

According to such a configuration of the check valve 220, only when the pressure of the heating water flowing into the inlet 221a of the body portion 221 exceeds the elastic force of the elastic member 223, causing increased pressure to build up inside the heating pipe, the valve body 222 opens the heating water channel and thus , the heating water passes the bypass pipe L8 to flow to the heating water return pipe L3, whereas when the pressure of the heating water is equal to or less than the elastic force of the elastic member 223, the valve body 222 remains in a state of overlapping channel heating water.

Further, the flow channels of the heating water and warm water in the heating mode and the warm water mode of the boiler, and when increased pressure is generated, will be described with reference to FIG. 13-15.

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 main supply pipe L1 of the heating water, and in this case, the three-way valve 210 is turned into the overlap of the inlet pipe L6 of the heating water and the opening of the supply pipe L2 of the heating water so that the heating water passing through the three-way valve 210 is supplied to the place to be heated along the heating water supply pipe L2. The heating water, which transfers heat while passing to the place to be heated, flows into the expansion tank 10 through 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 pipe L4 and an outlet pipe L5 for circulating heating water through the operation of the circulation pump 20, and circulates and flows after heating to the main heat exchanger 30.

Referring to FIG. 14, in the warm water mode, the heating water heated in the main heat exchanger 30 is supplied to the three-way valve 210 along the main supply pipe L1 of the heating water, and in this case, the three-way valve 210 is turned off to shut off the supply pipe L2 of the heating water and open the inlet pipe L6 of the heating water so that the heating water passing through the three-way valve 210 is supplied to the hot water heat exchanger 100 along the heating water inlet pipe L6. The heating water, which transfers heat to the once-through water in the hot water 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 inlet the heating water circulation pipe L4 and the heating water circulation pipe L5 by the operation of the circulation pump 20, and circulates and flows after heating to the main heat exchanger 30.

At the same time, the direct-flow water that flows through the direct-flow water supply pipe L9 is supplied to the hot water heat exchanger 100 through the direct-flow water inlet pipe L10 through the flow rate sensor 310, and warm water that is heated by receiving heat transferred from the heating water during the passage of the heat exchanger 100 hot water is supplied to the place that needs warm water through the warm water supply pipe L11.

Referring to FIG. 15, the heating water supply pipe L2, which connects the three-way valve 210 to the place to be heated, is blocked in the heating mode, or the heating water inlet pipe L6, which connects the three-way valve 210 to the hot water heat exchanger 100, is blocked in the warm water mode and when increased pressure is generated inside the heating pipe, the check valve 220 provided on the bypass pipe L8 opens, and thus the heating water that is supplied to the three-way valve 210 through the main supply pipe L1 is boiling water can flow into the expansion tank 10 through the bypass pipe L8 and the return pipe L3 of the heating water, thereby relieving the increased pressure generated inside the heating pipe. Therefore, damage to components other than the circulation pump 20, which is caused by the formation of increased pressure inside the heating pipe, can be prevented in order to improve the service life.

Although the present description provides an example of a case where heat exchange between the heating water and the once-through water is performed in the hot water heat exchanger 100, the hot water heat exchanger 100 can be used in the case where the heat exchange, in addition to water, is performed between two different fluids.

As described above, the present description is not limited to the above described embodiments, and modified implementations may be devised by those skilled in the art without departing from the technical nature of the present description, as defined in the appended claims. Therefore, such modified implementations fall within the scope of the present description.

Claims (28)

1. A boiler having a check valve integrated in the water pipe, which is equipped with a main heat exchanger 30 configured to heat the heating water through the heat of combustion of the burner, and a hot water heat exchanger 100 configured to supply warm water through heat exchange between the heated water heated in the main heat exchanger 30, and once-through water, including: a three-way valve 210, configured to change the course of the heating water in order to optionally supply the heating water heated in the main heat exchanger 30 to the heating pipe L2 connected to the place to be heated and to the heating pipe L6 connected to the hot heat exchanger 100 water; a bypass pipe L8 configured to connect a three-way valve 210 to a heating water return pipe L3 that connects the place to be heated to the main heat exchanger 30; a bypass pipe L8 configured to provide a channel separate from the heating pipe L2 connected to the place to be heated and a heating pipe L6 connected to the hot water heat exchanger 100 and formed on one side of the three-way valve 210, and the bypass pipe L8 is connected to the return a heating water pipe L3 that connects the place to be heated to the main heat exchanger 30; a check valve 220 provided in the bypass pipe L8 and configured to provide fluid flow in only one direction from the three-way valve 210 to the heating water return pipe L3 when increased pressure is created resulting from the closure of the heating pipe L2 connected to the site, to be heated, or a heating pipe L6 connected to the hot water heat exchanger 100, and the first water supply module 200, equipped with a three-way valve 210, a bypass pipe L8 and a check valve 220, which are built into it, and configured to provide a channel through which the heating water that is supplied from the main heat exchanger 30 is returned through the place to be heated, or a heat exchanger 100 of hot water and a channel through which the heating water is returned via the bypass pipe L8. 2. The boiler according to claim 1, in which the circulation pump 20, configured to forcibly move the heating water towards the main heat exchanger 30 in one direction, is provided in the heating pipes L4 and L5 connected to the return pipe L3 of the heating water. 3. The boiler according to claim 1, in which, when an increased pressure is obtained by closing the heating pipe L2 connected to the place to be heated, or the heating pipe L6 connected to the hot water heat exchanger 100, heating water heated in the main heat exchanger 30, is supplied to the three-way valve 210, flows into the bypass pipe L8, communicating with one side of the three-way valve 210, passes the check valve 220 and then flows into the expansion tank 10, and the heating water stored in the expansion tank 10, qi kuliruet and flows to the main heat exchanger 30 by the circulation pump 20 so that the creation of increased pressure inside the heating pipe are prevented. 4. The boiler according to claim 1, in which the hot water heat exchanger 100 can be made in the form of a plate-type heat exchanger, in which the heating water channel P1 and the direct-flow water channel P2 are formed separately from each other by collecting a plurality of plates into a packet, and thus heating water and once-through water are able to alternately flow in each layer inside the plates assembled in a package, so as to cause heat exchange between the heating water and once-through water, moreover, the front plate 110, which is located on the front side among the plurality of plates, is provided with a heating water discharge guide portion 110c, in which the heating water outlet pipe L7 is arranged to be located near the heating water inlet pipe L6 to form a heating water channel in order to allow heating water to flow into the heating water inlet pipe L6, which is formed on the lower one side of the front plate 110, and allowed to be discharged after the passage of the heating water channel P1, and a warm water discharge guide portion 110d in which the warm water supply pipe L11 is arranged to be arranged near the in-line water inlet pipe L10 to form a warm water channel in order to allow the un-flow water to flow into the in-line water inlet pipe L10 that is formed on the other bottom the side of the front plate 110 to be diverted after passage of the flow pipe P2, and moreover, the first water supply module 200 has one side that is removably mounted on the inlet pipe L6 of the heating water and the outlet pipe L7 of the heating water of the hot water heat exchanger 100, and moreover, the boiler includes: a second water supply module 300 having one side that is removably mounted to the in-line water inlet pipe L10 and the warm water supply pipe L11, and configured to provide a channel through which each of the un-flow water and warm water passes the hot water heat exchanger 100. 5. The boiler according to claim 4, in which the inlet 111 of the heating water connected to the inlet pipe L6 of the heating water is formed on the lower one side of the front plate 110, a heating water outlet 112 connected to the heating water outlet pipe L7 is formed on one side of the heating water inlet 111, and the heating water discharge guide portion 110c is formed to direct the heating water, which is discharged in a forward direction toward the upper other side of the front plate 110, to the heating water outlet 112. 6. The boiler according to claim 5, in which the inlet 113 of the once-through water connected to the inlet pipe L10 of the once-through water is formed on the lower other side of the front plate 110, a warm water outlet 114 is formed in an upper portion of the front plate 110 and connected to a warm water supply pipe L11 at a region where a heating water discharge guide portion 110c is not formed, near the direct-flow water inlet 113, and the warm water discharge guide portion 110d is formed to direct the warm water, which is discharged in a forward direction toward the upper one side of the front plate 110, to the warm water outlet 114. 7. The boiler according to claim 6, in which the flat plate 120 is assembled into a bag behind the front plate 110, wherein the heating water inlet 121 is formed on the lower one side of the flat plate 120, the heating water outlet 122 is formed on the upper other side of the flat plate 120, straight-through water inlet 123 is formed on the lower other side of the flat plate 120, and warm water outlet 124 is formed on the upper one side of the flat plate 120, and the perimeter of the edge of each heating water discharge guide portion 110c and the warm water discharge guide portion 100d is in close contact with the flat plate 120, and the inner portion of the edge projects forward to form an outlet channel of each of the heating water and warm water. 8. The boiler according to claim 7, in which a plurality of first plates 130 and second plates 140, each of which is formed to ensure the intersection of the protruding parts located in the diagonal direction in the forward and backward directions, can be alternately assembled in a bag behind the flat plate 120 , thus alternately forming a heating water channel P1 and once-through water channel P2, and a plurality of first flanges 135 and second flanges 145 that are curved in the opposite direction, respectively formed on the plurality of first plates 130 and second plates 140, are formed to allow fluid to flow through overlapping gaps between the plurality of first flanges 135 and second flanges 145. 9. The boiler of claim 8, in which the first plate 150 changes the course, made with the possibility of changing the flow of direct-flow water from the direction back to the forward direction, and the second plate 160 changes the course, made with the possibility of changing the course of the heating water from the direction back to forward are sequentially packaged in the back of the second plate 140, which is packaged in the rearmost position. 10. The boiler according to claim 9, in which the heating water inlet 151 is formed on the lower one side of the first stroke changing plate 150, the heating water outlet 152 is formed on the upper other side of the first stroke changing plate 150, and the lower other side and the upper one side formed in a shape overlapping in the forward and backward directions, and the entire region of the second stroke change plate 150 is made in a shape overlapped in the forward and reverse directions. 11. The boiler according to claim 4, in which the second water supply module 300 is equipped with a flow rate sensor 310 configured to measure the flow of the once-through water flowing into the inlet pipe L10 of the once-through water, the water adding pipe L12 configured to receive the once-through water to add heating water water when there is not enough heating water, and an additional water valve 320 provided in the pipeline of the water addition pipe L12 and configured to suspend the flow of direct-flow water.

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