WO2018117729A1

WO2018117729A1 - Valve having variable specification and boiler comprising same

Info

Publication number: WO2018117729A1
Application number: PCT/KR2017/015322
Authority: WO
Inventors: 민만홍; 양현익
Original assignee: 주식회사 경동나비엔
Priority date: 2016-12-23
Filing date: 2017-12-22
Publication date: 2018-06-28
Also published as: KR101946630B1; KR20180073883A

Abstract

A valve having a variable specification according to the present invention comprises: a body structured such that a fluid inlet is formed on one side thereof, the interior thereof is hollow, and the other side thereof is open; a valve body comprising a shaft portion inserted into the body and a valve portion so as to expose/cover a channel of a fluid introduced through the fluid inlet; an elastic member for applying elastic force to the valve body in such a direction that the fluid inlet of the body is covered; a support member coupled to the body so as to support the elastic member, a fluid outlet being formed inside the support member; and a means for changing the amount of compression, which changes the amount of compression of the elastic member such that the elastic force applied to the valve body varies, thereby fastening the support member to the body.

Description

Valves with changeable specifications and boilers with them

The present invention relates to a valve having a specification change and a boiler having the same, and more particularly, to a valve having a specification change capable of adjusting a pressure at which a valve is opened and closed in response to a specification of a circulation pump and a boiler having the same. .

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 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, heating the heating water heated in the main heat exchanger It is configured to include a three-way valve for switching the flow path of the heating water to supply to the requirements or selectively supply to the hot water heat exchanger side, and a circulation pump installed in the flow path of the heating water for pumping the heating water.

When the boiler configured as described above is operated, if the user arbitrarily closes the heating pipe, or if foreign matter accumulates in the heating pipe and the heating pipe is blocked, overpressure exceeding the allowable pressure occurs in the heating pipe. In this case, the circulation pump Will cause damage to boiler parts, including.

As a configuration for preventing overpressure in the heating pipe, a bypass pipe branched to one side from the heating water supply pipe is connected to the boiler, and the bypass pipe is opened only when the pressure of the heating water exceeds the set pressure. Check valve is installed.

Thus, the prior art in which the check valve is installed in the bypass pipe of the boiler is shown in Patent No. 10-1639188. In the conventional check valve including the prior art, the elastic force of the elastic member acting on the valve body is fixed at a constant size. In this case, the specification of the circulation pump for pumping the heating water is changed so that the pressure of the heating water is increased. In case of change, the check valve must be replaced with a specification that meets the specification of the circulation pump, thereby inferior in compatibility.

In addition, when the elastic member of the specification having the elastic force of the similar size is not set in the production of the check valve is mixed, it is difficult to distinguish with the naked eye, there is a problem that causes a defect of the product.

The present invention has been made to solve the above problems, by varying the amount of compression of the elastic member that acts an elastic force to open and close the flow path in response to the pressure of the fluid to adjust the pressure to open and close the flow path of the valve It is an object of the present invention to provide a valve capable of changing specifications that can realize a valve having various specifications by using a single valve.

Another object of the present invention is to provide a boiler having a valve capable of implementing a valve having a predetermined specification corresponding to the specification of a circulation pump, or a specification change capable of precise performance adjustment according to an application environment of a fluid pressure.

The

valves

100 and 200 capable of changing the specification of the present invention for realizing the object as described above, the inlet of the fluid is formed on one side, the inside is made of a hollow, the

other side body

110, 210 made of an open structure ; A valve body (120, 220) formed of shaft parts (121,221) and valve parts (122,222) inserted into the bodies (110,210) to open and close the flow path of the fluid flowing through the inlet; An elastic member (130,230) for applying an elastic force to the valve body (120,220) in the direction of closing the inlet of the body (110,210); A support member (140,240) supporting the elastic member (130,230) and coupled to the body (110,210), the outlet of the fluid being formed; And compression amount changing means for fastening the

support members

140 and 240 to the

bodies

110 and 210 by changing the compression amounts of the

elastic members

130 and 230 so that the elastic force acting on the

valve bodies

120 and 220 is variable.

Compression amount changing means according to the first embodiment of the present invention, the moving groove 113 cut in a predetermined length in the longitudinal direction on the body 110; A plurality of locking grooves 114 formed at positions spaced apart from each other by a predetermined length from the moving groove 113 in a direction crossing the moving groove 113 and spaced apart from each other; And a protrusion 143 that protrudes from one side of the support member 140 to move along the moving groove 113 and is selectively locked to any one of the plurality of locking grooves 114.

The moving groove 113 may be formed in a direction parallel to the direction in which the elastic member 130 is compressed or relaxed.

The moving grooves 113 are formed in plural in the circumferentially spaced position in the body 110, the projections 143 may be formed in plurality in positions corresponding to the plurality of moving grooves 113, respectively. have.

A protrusion 114 ′ may be formed in the locking groove 114 to prevent the protrusion 143 caught by the locking groove 114 from being separated toward the moving groove 113.

The compression amount changing means according to the second embodiment of the present invention, the first hook portion 213 formed on the body 210 and the first hook portion 213 to be engaged with the support member 240 The second hook portion 243 is formed, and the compression amount of the elastic member 230 is changed by changing a position at which the first hook portion 213 and the second hook portion 243 are engaged. Can be.

When the support member 240 is moved in the direction in which the elastic member 230 is compressed, the second hook portion 243 moves over the first hook portion 213 and moves, and the elastic member 230 is moved. When the support member 240 is moved in the direction of restoring, the first hook portion 213 and the second hook portion 243 are engaged with each other, and the support member 240 may be fixed in position. .

The first hook portion 123 may include a first inclined surface 213a inclined to one side from an outer surface of the body 210 and an outer surface of the body 210 at an end of the first inclined surface 213a. The second hook portion 243 includes a vertical surface 213b extending in parallel and a first horizontal surface 123c extending in a direction orthogonal to the outer surface of the body 210 at the end of the vertical surface 213b. ) May include a second inclined plane 243a corresponding to the first inclined plane 213a and a second horizontal plane 243b corresponding to and engaged with the first horizontal plane 213c.

The support member 240 may be provided with a handle portion 245 protruding from the groove 244 to the outside of the second hook portion 243.

The first hook portion 213 may be formed on an outer circumferential surface of the body 210, and the second hook portion 243 may be plurally spaced apart from the inner surface of the support member 240 in a circumferential direction. .

The body 210 may be formed with a slit portion 214 cut in a predetermined length in the longitudinal direction, and the slit portion 214 may be formed in plural numbers spaced apart from the body 210 in the circumferential direction.

The

elastic members

130 and 230 may include a coil spring having both ends supported by the

valve parts

122 and 222 of the

valve body

120 and 220 and the

support members

140 and 240.

The

elastic members

130 and 230 may be provided around the

shaft portions

121 and 221 of the

valve bodies

120 and 220.

Boiler (1) having a valve capable of changing the specification according to the present invention, the main heat exchanger (10) for heating the heating water by the heat of combustion of the burner; Hot water supply heat exchanger 20 for supplying hot water by heat exchange between the heating water and the direct water heated in the main heat exchanger (10); Supplying the heating water heated in the main heat exchanger 10 to the heating water supply pipe (L1) connected to the heating source side, or selectively supplying to the hot water supply side inlet pipe (L3) connected to the hot water supply heat exchanger (20) side. Three-way valve 30 for switching the flow path of the heating water; A circulation pump (40) installed in the flow path of the heating water so as to pressurize the heating water; A bypass pipe (L7) branched from the heating water supply pipe (L1) positioned between the main heat exchanger (10) and the three-way valve (30) and connected to the hot water supply side inlet pipe (L3); And heating water heated in the main heat exchanger (10) via the bypass pipe (L7) when provided in the pipeline of the bypass pipe (L7) and overpressure occurs in the heating pipe of the heating source. And a valve (100, 200) capable of changing the specification to allow flow in only one direction toward the side inlet pipe (L3).

The specification

changeable valves

100 and 200 may be adjusted to change the compression amount of the

elastic members

130 and 230 by the compression amount changing means in response to the size of the heating water pressure force according to the specification of the circulation pump 40. have.

According to the valve capable of changing the specification of the present invention, by providing a compression amount changing means for fastening the support member to the body by changing the compression amount of the elastic member so that the elastic force acting on the valve body is variable, Valves of various specifications can be implemented.

In addition, according to the first embodiment of the present invention, a moving groove and a plurality of locking grooves are formed in the body, and the support member is movable along the moving groove, and provided with a projection selectively caught in any one of the plurality of locking grooves. By doing so, it is possible to implement a valve having a selected specification corresponding to the specification of the circulation pump.

In addition, according to the second embodiment of the present invention, the body is provided with a first hook portion, the support member is provided with a second hook portion to be engaged with the first hook portion, the position where the first hook portion and the second hook portion is locked By changing, the compression amount of the elastic member can be changed, and the performance of the valve can be precisely adjusted in accordance with the application environment of the fluid pressure.

In addition, users and producers can easily change the specifications of the valve, there is no need to distinguish the specifications of the elastic member can improve the productivity.

Moreover, according to the boiler provided with the valve which can change the specification of this invention, by changing the specification of a valve according to the specification of the circulation pump installed in a boiler, the pressure rise in a piping can be prevented, and after installation of a boiler, Even if the specifications are changed, the valve specifications can be easily changed and used according to the specifications of the circulation pump without replacing the valve.

1 is a view showing a flow path of the heating water during the heating operation of the boiler to which the present invention is applied,

2 is a view showing a flow path of heating water and direct water when using hot water of the boiler to which the present invention is applied,

3 is a view showing a flow path in which heating water is bypassed when overpressure occurs in a heating pipe of a boiler to which the present invention is applied;

4 is a perspective view of a valve capable of changing specifications according to a first embodiment of the present invention;

5 is an exploded perspective view of FIG. 4;

6 is a front view of FIG. 4,

7 and 8 are a cross-sectional view and a cross-sectional perspective view along the line A-A of FIG. 6,

9 is a cross-sectional view showing a state in which a flow path of a valve capable of changing a specification according to a first embodiment of the present invention is opened;

10 and 11 are perspective views showing a process of changing the compression amount of the elastic member in the valve capable of specification change according to the first embodiment of the present invention,

12 is a longitudinal cross-sectional view of FIG. 11;

13 is a perspective view of a valve capable of changing specifications according to a second embodiment of the present invention;

14 is an exploded perspective view of FIG. 13;

15 is a front view of FIG. 13,

16 is a plan view of FIG. 13;

17 is a cross-sectional view along the line B-B of FIG. 16,

18 is a cross-sectional view showing an opening of a flow path of a valve capable of specification change according to a second embodiment of the present invention;

19 is a perspective view showing a state in which the compression amount of the elastic member is changed in the valve capable of specification change according to the second embodiment of the present invention;

20 is a longitudinal sectional view of FIG. 19;

** Explanation of Codes **

1: boiler 10: main heat exchanger

20: hot water supply heat exchanger 30: three-way valve

40: circulation pump 50: flow switch

60: supplementary water valve 70: check valve

L1: heating water supply pipe L2: heating water return pipe

L3: Hot water supply side inlet pipe L4: Hot water supply side discharge pipe

L5: water pipe L6: hot water pipe

L7: bypass pipe L8: supplement water supply pipe

100: valve can be changed specifications 110: body

111: shaft insertion opening 112: inlet opening

113: moving groove 114,114a, 114b, 114c: locking groove

114 ': protrusion 115: valve seat

120: valve body 121: shaft portion

122: valve portion 122a: coupling groove

123: airtight member 130: elastic member

140: support member 141: shaft through hole

142: outlet 143: projection

200: valve specification can be changed 210: body

211: shaft insertion opening 212: inlet

213: first hook portion 213a: first slope

213b: vertical plane 213c: first horizontal plane

214: slit part 215: valve seat

220: valve body 221: shaft portion

222: valve portion 222a: coupling groove

223: airtight member 230: elastic member

240: support member 241: shaft through hole

242: outlet 243: second hook portion

243a: second inclined plane 243b: second horizontal plane

244: groove 245: handle

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 1 having a valve capable of changing specifications according to an embodiment of the present invention, the main heat exchanger 10 for heating the heating water by the heat of combustion of the burner, the main heat exchanger Hot water supply heat exchanger 20 for supplying hot water by heat exchange between the heating water and the direct water heated in 10, the heating water supply pipe (L1) connected to the heating water source to the heating water heated in the main heat exchanger (10) Three-way valve 30 for switching the flow path of the heating water for supplying or selectively supplying to the hot water supply side inlet pipe (L3) connected to the hot water supply heat exchanger 20 side, the pressure of the heating water to feed the heating water The bypass pipe (L7) is branched from the circulating pump 40 is installed, the main heat exchanger 10 and the three-way valve 30 is connected to the hot water supply inlet pipe (L3) branched from the heating water supply pipe (L1) And is provided in the pipeline of the bypass pipe (L7), When overpressure occurs in the heating pipe of the heating source, allowing the heating water heated in the main heat exchanger 10 to flow only in one direction toward the hot water supply side inflow pipe L3 via the bypass pipe L7. It includes a valve (100,200) that can be changed specifications.

Reference numeral '21' denotes a direct water inlet, '22' denotes a hot water outlet, '23' denotes a heating water inlet, '24' denotes a heating water outlet, '50' denotes a flow switch for detecting direct flow, and '60' supplements Water valve, '70' is check valve, 'L1' is heating water supply pipe, 'L2' is heating water return pipe, 'L3' is hot water supply inlet pipe, 'L4' is hot water supply pipe, 'L5' is straight water pipe 'L6' is the hot water pipe, 'L7' is the bypass pipe and 'L8' is the supplement water supply pipe.

Figure 1 shows the flow path of the heating water during heating operation, the heating water via the heating requirements at the time of heating operation as shown by the black arrow through the heating water return pipe (L2) and the circulation pump 40 It is returned to the main heat exchanger (10) and heated by the burner in the main heat exchanger (10) and then flows along the circulation passage supplied to the heating source through the three-way valve (30) and the heating water supply pipe (L1). In this case, the three-way valve 30 is open to the heating water supply pipe (L1) side, the flow path to the hot water supply side inlet pipe (L3) side is in a closed state.

Figure 2 shows the flow path of the heating water and direct water when using hot water, the heating water when using hot water is heated by the burner in the main heat exchanger 10, as indicated by the black arrow three-way valve 30 and the hot water supply side inlet pipe After passing through (L3) to the heating water inlet 23 of the hot water supply heat exchanger 20, the heating water heat exchanged through the hot water heat exchanger 20 is discharged through the heating water outlet 24 and then the hot water supply side It flows along the circulation flow path returned to the main heat exchanger (10) via the discharge pipe (L4), heating water return pipe (L2) and the circulation pump (40). In this case, the three-way valve 30 is in a state in which the flow passage to the heating water supply pipe L1 is closed and the flow passage to the hot water supply inlet pipe L3 is open.

3 shows a flow path in which heating water is bypassed when overpressure occurs in a heating pipe of a boiler, and when the overpressure occurs in a heating pipe, the heating water is heated by a burner in the main heat exchanger 10 as indicated by a black arrow. Flowing from the supply pipe (L1) to the bypass pipe (L7), passing through the valve (100,200) capable of specification changes provided in the bypass pipe (L7), hot water supply side inlet pipe (L3), hot water supply heat exchanger (20) The water supply side discharge pipe (L4), the heating water return pipe (L2) and the circulation pump 40 is returned to the main heat exchanger (10). In this case, the three-way valve 30 is open to the heating water supply pipe (L1) side, the flow path to the hot water supply side inlet pipe (L3) is in a closed state, when overpressure occurs in the heating pipe of the heating source The heating water discharged from the main heat exchanger 10 and flowing along the heating water supply pipe L1 does not flow to the heating source side due to the pressure difference, and is bypassed through the

valves

100 and 200 that can be changed in specification. It is configured to prevent the pressure rise.

In FIG. 3, a dotted arrow shows a path where water is replenished when water is insufficient in the heating water flow path. The replenishment water supply pipe L8 is provided with a replenishment water valve 60 for opening and closing a flow path, and a check valve 70 for preventing a back flow of the heating water by restricting the flow direction of the replenishing water to one direction in which the heating water is replenished. .

The

valves

100 and 200 capable of changing the specification in the boiler 1 configured as described above are elastic members for opening and closing flow paths of the

valves

100 and 200 in response to the magnitude of the heating water pressure force according to the specification of the circulation pump 40. It is configured to adjust the amount of compression, and will be described below the configuration and operation of the valve (100,200) capable of changing the specification.

4 to 12, the valve 100 capable of changing the specification according to the first embodiment of the present invention includes a body 110, a valve body 120, an elastic member 130, and a support member. 140 and compression amount changing means.

The body 110 is formed in the upper center shaft insertion opening 111 is inserted into the upper end of the shaft portion 121 of the valve body 120, the inlet 112 through which the heating water flows around the shaft insertion opening 111 ) Is formed. The interior of the body 110 is made of a hollow, the lower portion of the body 110 is made of an open structure.

The body 110, as one component of the compression amount changing means, a moving groove 113 cut in a predetermined length in the longitudinal direction (up and down direction), and the moving groove in a direction crossing the moving groove 113 ( 113, a plurality of engaging grooves 114; 114a, 114b, and 114c which are cut to one side and spaced up and down are formed.

In addition, a valve seat 115 is formed on the upper inner surface of the body 110 to contact the airtight member 123 of the valve body 120 to be described later.

The valve body 120 includes a shaft portion 121 inserted into the body 110, a valve portion 122 coupled to an upper side of the shaft portion 121, and a coupling groove 122a formed in the valve portion 122. It is composed of an airtight member 123 is fastened to the).

When the airtight member 123 of the valve body 120 is in close contact with the valve seat 115 of the body 110, the inlet 112 is closed, and the valve seat 115 and the valve body of the body 110 are closed. When the airtight member 123 of 120 is spaced apart, the inlet 112 is opened to pass through the inlet 112 and the heating water flows into the body 110.

The elastic member 130 functions to apply an elastic force to the valve body 120 in the direction of closing the inlet 112. In one embodiment, the elastic member 130 is supported at both ends on the bottom surface of the valve portion 122 and the upper surface of the support member 140 of the valve body 120 and the coil spring is provided around the shaft portion 121 It may be configured as.

The support member 140, the lower end of the shaft portion 121 of the valve body 120 is inserted in the center through the shaft through-hole 141 is formed, the outlet for discharging the heating water around the shaft through-hole 141 142 is formed.

The support member 140 as another component of the compression amount changing means, protruding outward from the outer surface of the support member 140 is movable along the moving groove 113 formed in the body 110. And the projection 143 is selectively formed in any one of the plurality of engaging grooves (114; 114a, 114b, 114c) is formed.

As described above, the compression amount changing means includes a moving groove 113 formed in the body 110, a plurality of locking grooves 114; 114a, 114b, 114c, and a protrusion 143 formed in the support member 140. The moving groove 113 may be formed in parallel with the direction in which the elastic member 130 is compressed or relaxed. In addition, the moving grooves 113 are formed in plurality in positions circumferentially spaced in the body 110, and the protrusions 143 are formed in plurality in positions corresponding to the plurality of moving grooves 113, respectively. Can be. In addition, a protrusion 114 ′ may be formed in the locking groove 114 to prevent the protrusion 143 caught by the locking groove 114 from being separated toward the moving groove 113.

6 to 8 illustrate that the protrusion 143 is in a state of being engaged with the locking groove 114a positioned at the lowermost end of the plurality of locking grooves 114; 114a, 114b, and 114c, and the inlet 112 is closed. 9 shows the state in which the valve body 120 is compressed while the elastic member 130 is compressed by the pressure of the heating water when the pressure of the heating water exceeds the elastic force of the elastic member 130 as indicated by the arrow. It is pushed in the direction and the heating water passes through the spaced apart space between the airtight member 123 and the valve seat 115 is shown.

FIG. 10 illustrates a process of moving the protrusion 143 held by the locking groove 114a located at the lowermost end to the moving groove 113 and then moving upward. FIGS. 11 and 12 illustrate the protrusion 143. Shows the state of being locked to the locking groove 114b located at the middle height.

As such, by changing the position at which the protrusion 143 is engaged among the plurality of locking grooves 114; 114a, 114b, and 114c, the compression amount of the elastic member 130 may be changed, and thus the elastic member 130 may have a valve. Since the magnitude of the elastic force applied to the sieve 120 is changed, the pressure range of the heating water to which the valve body 120 is moved can be set. That is, as the height of the locking groove 114 to which the protrusion 143 is caught increases, the compression amount of the elastic member 130 increases, and accordingly, the elastic force of the elastic member 130 applied to the valve body 120 is increased. The size is also increased, it can be set so that the valve 100 is opened only when the pressure of the heating water is relatively large.

According to the configuration of the valve 100 that can change the specification according to the present embodiment, the projection 143 is adjusted to be caught in any one of the plurality of locking grooves (114; 114a, 114b, 114c) formed in a position spaced up and down By this, the compression amount of the elastic member 130 can be changed, and such a configuration has an advantage of implementing the valve 100 having a selected specification corresponding to the specification of the circulation pump 40.

Hereinafter, the configuration and operation of the valve 200 capable of changing specifications according to the second embodiment of the present invention will be described with reference to FIGS. 13 to 20.

The valve 200 capable of changing specifications according to the second embodiment of the present invention includes a body 210, a valve body 220, an elastic member 230, a support member 240, and a compression amount changing means. Include.

The body 110 has a shaft insertion opening 211 in which an upper end of the shaft portion 221 of the valve body 220 is inserted in an upper center thereof, and an inlet 212 through which heating water flows around the shaft insertion opening 211. ) Is formed. The inside of the body 210 is made of a hollow, the lower portion of the body 210 is made of an open structure.

On the outer circumferential surface of the body 210, as one component of the compression amount changing means, a first hook portion 213 is formed along the circumferential direction and has a plurality of sawtooth shapes at a dense interval in the longitudinal direction. . In addition, the body 210 is formed with a slit portion 214 cut in a predetermined length in the longitudinal direction, and the slit portion 214 is formed in plurality in the circumferential direction spaced from the body 210.

In addition, a valve seat 215 is formed on the upper inner surface of the body 210 to contact the airtight member 223 of the valve body 220 described later.

The valve body 220 includes a shaft portion 221 inserted into the body 210, a valve portion 222 coupled to an upper side of the shaft portion 221, and a coupling groove 222a formed in the valve portion 222. It is composed of an airtight member 223 fastened to).

When the airtight member 223 of the valve body 220 is in close contact with the valve seat 215 of the body 210, the inlet 212 is closed, and the valve seat 215 and the valve body of the body 210 are closed. When the airtight member 223 of 220 is spaced apart from each other, the inlet 212 is opened to pass through the inlet 212 and the heating water flows into the body 210.

The elastic member 230 has a function of applying an elastic force to the valve body 220 in the direction of closing the inlet 212. In one embodiment, the elastic member 230 is supported at both ends on the bottom surface of the valve portion 222 and the upper surface of the support member 240 of the valve body 220 and the coil spring is provided around the shaft portion 221 It may be configured as.

The support member 240 has a shaft through-hole 241 through which the lower end of the shaft portion 221 of the valve body 220 is inserted and penetrated in the center thereof, and a discharge port through which the heating water is discharged around the shaft through-hole 241. 242 is formed.

On the inner surface of the support member 140, as another component of the compression amount changing means, a second hook portion having a plurality of sawtooth shape that is caught by the first hook portion 213 formed on the body 210 ( 243) is formed. The second hook portion 243 may be formed in a plurality of spaced apart in the circumferential direction on the inner surface of the support member 240.

In this embodiment, the compression amount of the elastic member 230 can be changed by changing the position where the first hook portion 213 of the body 210 and the second hook portion 243 of the support member 240 are coupled. Consists of.

When the support member 240 is moved in the direction in which the elastic member 230 is compressed, the second hook portion 243 moves over the first hook portion 213.

On the contrary, when the support member 240 is moved in a direction in which the elastic member 230 is restored, the first hook portion 213 and the second hook portion 243 are caught to support the support member 240. Is fixed in position.

In this configuration, referring to FIG. 17, the first hook portion 123 may include a first inclined surface 213a inclined to one side from an outer surface of the body 210 and a portion of the first inclined surface 213a. A vertical surface 213b extending in parallel with an outer surface of the body 210 at an end, and a first horizontal surface 123c extending in a direction orthogonal to the outer surface of the body 210 at an end of the vertical surface 213b The second hook portion 243 may include a second slope 243a corresponding to the first slope 213a and a second horizontal plane 243b corresponding to and engaged with the first horizontal plane 213c. Consists of

As the vertical surface 213b is formed on the first hook portion 123, the interference between the corresponding sawtooth shape when the engagement position between the first hook portion 123 and the second hook portion 243 is changed is reduced. have.

Meanwhile, referring to FIG. 14, the support member 240 may further include a handle portion 245 protruding from the second hook portion 243 with the groove 144 interposed therebetween. According to this configuration, the operator can adjust the height of the support member 240 in a state of holding the handle portion 245 can improve the work convenience.

In order to increase the amount of compression of the elastic member 230, when the support member 240 is pushed upward, the second inclined surface 243a of the second hook portion 243 is the first hook portion 213. Ride over the first inclined surface 213a and move. When the support member 240 stops moving after raising the support member 240 to the desired position, the second horizontal surface 243b of the second hook portion 243 is caught by the first horizontal surface 213c of the first hook portion 213. Even when the elastic force of the elastic member 230 is applied, the position of the support member 240 is fixed without being arbitrarily changed.

On the contrary, in order to reduce the amount of compression of the elastic member 230, when the operator applies the force in the inward direction to the body 210, by the space of the slit portion 214 formed in the body 210 Since the body 210 is retracted inward, the engagement between the second horizontal surface 243b of the second hook portion 243 and the first horizontal surface 213c of the first hook portion 213 is released to support the support member 240. Can be moved downward to the desired position without jamming.

According to the configuration of the valve 200 capable of changing the specification according to the present embodiment, the position at which the first hook portion 213 of the body 210 and the second hook portion 243 of the support member 240 are locked is changed. By this, the compression amount of the elastic member 130 can be changed, and such a configuration has an advantage of precisely adjusting the performance of the valve according to the application environment of the fluid pressure.

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

One side of the fluid inlet is formed, the inside is made of a hollow, the other side of the body (110, 210) of the open structure;

A valve body (120, 220) formed of shaft parts (121,221) and valve parts (122,222) inserted into the bodies (110,210) to open and close the flow path of the fluid flowing through the inlet;

An elastic member (130,230) for applying an elastic force to the valve body (120,220) in the direction of closing the inlet of the body (110,210);

A support member (140,240) supporting the elastic member (130,230) and coupled to the body (110,210), the outlet of the fluid being formed; And

Compression amount changing means for fastening the support member (140,240) to the body (110,210) by changing the compression amount of the elastic member (130,230) so that the elastic force acting on the valve body (120,220) is variable;

Specifications can be changed valve including.
The method of claim 1,

The compression amount changing means,

A moving groove 113 cut in a length direction in the body 110;

A plurality of locking grooves 114 formed at positions spaced apart from each other by a predetermined length from the moving groove 113 in a direction crossing the moving groove 113 and spaced apart from each other; And

A protrusion 143 protruding from one side of the support member 140 to be movable along the moving groove 113 and being selectively locked to any one of the plurality of locking grooves 114; Valves with changeable specifications.
The method of claim 2,

The movable groove 113 is a valve capable of changing specifications, characterized in that formed in the direction parallel to the direction in which the elastic member 130 is compressed or relaxed.
The method of claim 2,

The moving groove 113 is formed in plurality in a position spaced in the circumferential direction on the body 110,

The projection (143) is a valve capable of changing the specifications, characterized in that formed in plurality in a position corresponding to each of the plurality of moving grooves (113).
The method of claim 2,

The locking groove 114 is capable of specification change, characterized in that the protrusion 114 'is formed to prevent the projection 143 is caught in the locking groove 114 is separated from the moving groove 113 side. valve.
The method of claim 1,

The compression amount changing means,

A first hook portion 213 formed on the body 210,

A second hook portion 243 formed on the support member 240 to be engaged with the first hook portion 213,

By changing the position at which the first hook portion (213) and the second hook portion (243) is engaged, the compression amount of the elastic member 230 is changed, characterized in that the valve.
The method of claim 6,

When the support member 240 is moved in the direction in which the elastic member 230 is compressed, the second hook portion 243 is moved over the first hook portion 213.

When the support member 240 is moved in a direction in which the elastic member 230 is restored, the first hook portion 213 and the second hook portion 243 are engaged with each other, so that the support member 240 is A valve whose specification can be changed, wherein the valve is fixed in position.
The method of claim 7, wherein

The first hook portion 123 may include a first inclined surface 213a inclined to one side from an outer surface of the body 210 and an outer surface of the body 210 at an end of the first inclined surface 213a. A vertical surface 213b extending in parallel and a first horizontal surface 123c extending in a direction orthogonal to an outer surface of the body 210 at an end of the vertical surface 213b,

The second hook portion 243 includes a second inclined surface 243a corresponding to the first inclined surface 213a and a second horizontal surface 243b corresponding to and engaged with the first horizontal surface 213c. The valve can be changed to a specification.
The method of claim 6,

The support member 240 is a valve capable of changing the specifications, characterized in that the handle portion 245 is formed to protrude through the groove 244 to the outside of the second hook portion (243).
The method of claim 6,

The first hook portion 213 is formed on the outer circumferential surface of the body 210,

The second hook portion (243) is a valve capable of changing the specifications, characterized in that formed in a plurality of spaced apart in the circumferential direction on the inner surface of the support member (240).
The method of claim 10,

The body 210 is formed with a slit portion 214 cut in a predetermined length in the longitudinal direction, the slit portion 214 is a specification change characterized in that formed in a plurality of spaced apart in the circumferential direction Valves available.
The method of claim 1,

The elastic member (130,230) is a valve capable of changing specifications, characterized in that the coil spring is supported at both ends of the valve portion (122,222) and the support member (140,240) of the valve body (120,220).
The method of claim 12,

The elastic member (130,230) is a valve capable of changing the specifications, characterized in that provided around the shaft portion (121,221) of the valve body (120,220).
Main heat exchanger 10 for heating the heating water by the heat of combustion of the burner;

Hot water supply heat exchanger 20 for supplying hot water by heat exchange between the heating water and the direct water heated in the main heat exchanger (10);

Supplying the heating water heated in the main heat exchanger 10 to the heating water supply pipe (L1) connected to the heating source side, or selectively supplying to the hot water supply side inlet pipe (L3) connected to the hot water supply heat exchanger (20) side. Three-way valve 30 for switching the flow path of the heating water;

A circulation pump (40) installed in the flow path of the heating water so as to pressurize the heating water;

A bypass pipe (L7) branched from the heating water supply pipe (L1) positioned between the main heat exchanger (10) and the three-way valve (30) and connected to the hot water supply side inlet pipe (L3); And

When the overpressure is generated in the heating pipe of the bypass pipe (L7), the heating water heated in the main heat exchanger (10) via the bypass pipe (L7) in the hot water supply side A valve (100,200) capable of changing the specification according to claims 1 to 13, which allows flow in only one direction toward the inlet pipe (L3);

Boiler with a valve capable of changing the specification, including.
The method of claim 14,

The valves 100 and 200 capable of changing the specifications may be adjusted to change the compression amounts of the elastic members 130 and 230 by the compression amount changing means in response to the magnitude of the heating water pressure force according to the specification of the circulation pump 40. Boiler having a valve capable of changing the specifications, characterized in that.