KR101274498B1 - Check valve - Google Patents

Abstract

PURPOSE: A check valve for a hot water mat is provided to prevent valve operation noises during the expansion and circulation of hot water by closing a hot water inlet with first and second blocking plates. CONSTITUTION: A check valve(1) for a hot water mat comprises a body(2), first and second blocking plates(3,4), a partition(7), an air bladder(14), and an air bladder fixing cap(15). The body has an opening part(19) on one side thereof. If expansion pressure is strong, the cut lines of the first and second blocking plates are opened so that the expansion pressure can be discharged to a hot water inlet. A gap maintaining protrusion(6) having a coupling hole(5) is protruded from one side of the upper part of the partition. An inflow hole(8) is formed in the lower part of the partition so that hot water can flow in. An inflow groove(18) is formed in the air bladder to discharge air to a discharge hole(17) when the pressure drops. The air bladder fixing cap is inserted into an assembly hole(16). The bottom of the air bladder fixing cap is opened to discharge and block the air. A holding protrusion is formed in the edge of the opened bottom part of the air bladder fixing cap to prevent the separation of the air bladder fixing cap. A discharge hole is formed at the top center of the air bladder fixing cap to discharge the air.

Description

Check valve for hot water mat {check valve}

The present invention provides a check valve in a hot water storage tank for circulating and supplying hot water to a hot water mat. In the process of circulating and supplying hot water heated by a heater, the expansion pressure of the heated hot water does not flow back through the check valve, The present invention relates to a check valve for a hot water mat that circulates through a pipe and stably discharges a pressure flowing back into the check valve to block noise and prevent breakage of the blocking plate.

In general, the hot water mat is formed by heating the stored water in the hot water storage tank provided in the hot water heater with an electric heater to form hot water, and then circulating the hot water into a mat connected by a connection hose using an electric motor pump. Refers to a heating mat configured to be supplied.

The hot water mat has the advantage that it is possible to completely solve the problems of the existing electric mat that is configured to embed the electric heating wire inside the mat, that is, the risk of fire or electric shock due to harmful electromagnetic waves and electric heating wire.

However, the conventional hot water heating device for the hot water mat is mostly configured to heat the entire water stored in the hot water storage tank by the electric heater installed in the hot water storage tank, so that the hot water heating efficiency of the electric heater is low to reach the set heating temperature. Not only does it take a lot of time, but also consumes a lot of electricity, there is a problem that takes a lot of maintenance costs such as electricity bills.

Therefore, the conventional hot water heating device for hot water mat is configured so that the electric motor pump for circulating the hot water stored in the hot water storage tank is fixedly installed on one side of the hot water storage tank, so that the noise of the motor generated when the electric motor pump is driven and Vibration is emitted to the outside through the body of the hot water heater as it generates unpleasant noise, there was a problem that can not take a comfortable sleep due to such noise.

Therefore, recently, a non-powered hot water mat from which an electric motor pump has been removed has been developed and commercially available.

On the other hand, the hot water mat is composed of a hot water mat in which the hot water pipe is disposed, and a hot water heating device for circulating and supplying hot water to the hot water mat.

The hot water circulation supply device includes a hot water storage tank to which hot water is supplied, a heater for heating the hot water stored in the hot water storage tank, and a check valve to prevent the hot water heated by the heater from flowing back to the hot water storage tank.

In addition, the check valve is formed in a box shape having a through hole with one side open, and a valve chamber is formed therein, and the valve chamber is provided in a state in which a blocking plate is positioned in a vertical line to fix one end thereof.

Therefore, when the hot water is heated by the heater, the hot water circulation supply device prevents the hot water from flowing back to the hot water inlet by the blocking plate of the check valve by the expansion pressure of the hot water, and the expanded hot water flows into the hot water mat by the expansion pressure. The mat is heated.

In addition, when the pressure in the valve chamber is lowered, hot water from the hot water storage tank is introduced through the check valve to circulate the hot water.

However, in the conventional check valve, a blocking plate is provided on the vertical wall of the valve chamber.

There was a problem that the valve plate is not always in close contact with the inlet of the hot water, the closing noise occurs during the expansion flow of the hot water by the heater, and the expansion pressure of the hot water is reversed to smoothly circulate the hot water.

In addition, most of the blocking plate is made of a rubber material to open and close the hot water inlet by the elastic force, the elastic force is lowered in repeated operation, the sealing force is always kept open, as well as easily broken by the expansion pressure does not function properly There is a problem.

In addition, when the pressure in the valve chamber is expanded, the pressure must be discharged to the outside of the check valve, but when it is not discharged smoothly, there is a problem that noise is generated by the expansion pressure.

Korean Patent Registration No. 1128952 "Hot water circulation device"

In order to solve the above problems, the present invention maintains the hot water inlet for supplying hot water to the blocking plate installed in the check valve at all times to induce the heated water to circulate without the expansion pressure flowing back and increase the hot water efficiency. The purpose of the present invention is to prevent a loss of the inflation pressure and to discharge a part of the inflation pressure so that the blocking plate is not damaged if the inflation pressure is excessively generated.

As a means for solving the above problems, the check valve of the present invention has a box-shaped body having one side open, a valve chamber inside the body, a fastening pin projecting horizontally in the valve chamber, and a fastening pin 1. Hot water with a break-prevention cap with a buckle that is operated to elevate the air inside the valve chamber in order to discharge the air inside the valve chamber when the inlet hole is formed. Provide a check valve for the mat.

As described above, the check valve of the present invention is installed in the valve chamber to maintain the hot water inlet at all times by maintaining the closed state of the hot water inlet as well as the secondary blocker blocks the expansion pressure if the primary blocker does not function properly. The expansion pressure is doubled to prevent reverse flow, thereby maintaining a stable state at all times.

In addition, the present invention maintains the hot water inlet at the normally closed state by the primary and secondary blocking plates, so that the valve operation noise is not generated during the expansion and circulation of the hot water by the heating of the heater, thereby improving the quietness and preventing the loss of the expansion pressure. There is an effect that the circulation of hot water is smooth.

Therefore, the present invention enables the active flow control according to the expansion pressure

If the water pressure drops considerably, such as when there is a circulation failure, the water flows into the hot water inlet side with a small flow rate, so that the circulation failure can be dealt with more efficiently. There is an effect of preventing the noise generated by moving in the reverse direction to the check valve side.

In addition, the present invention has an effect of facilitating opening by forming an adhesion preventing protrusion on the opening protrusion or the partition plate so that the expansion pressure is lowered so that the primary and secondary blocking plates can be simultaneously opened when hot water is introduced into the check valve.

In addition, the check valve of the present invention is provided with a buckle operating by lifting pressure by the expansion pressure so that the air pressure in the valve chamber can be discharged when the shell pressure is lowered.

In addition, the present invention has the effect of forming a cutting line on the blocking plate when the excessive expansion pressure is generated by the cutting line is opened by the expansion pressure to discharge the expansion pressure to prevent the blocking plate from breaking or overflowing water to the outside.

1 is an exploded perspective view showing the check valve of the present invention.
Figure 2 is a perspective view showing a coupling check valve of the present invention.
Figure 3 is a perspective view showing the hot water inlet of the check valve of the present invention.
Figure 4 is a front view showing the inside of the check valve of the present invention.
5 is an exploded perspective view showing the first and second blocking plates of the present invention.
Figure 6a is an exploded perspective view showing another embodiment of the present invention 1, 2 blocking plate.
Figure 6b is a perspective view showing a state where the cutting line is opened in the present invention 1, 2 blocking plate.
Figure 7 is a perspective view showing another embodiment of the present invention blocking plate.
Figure 8 is a perspective view showing another embodiment of the present invention blocking plate.
9 is a cross-sectional view showing a beret of the present invention.
10 is a cross-sectional view showing an operating state of the check valve of the present invention.
11 is a cross-sectional view showing the operating state of the beret in the check valve of the present invention.
12 is a cross-sectional view showing another operating state of the check valve of the present invention.
Figure 13a, b is an exemplary view showing an installation state of the check valve of the present invention.

In order to achieve the above objects and effects, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing the check valve of the present invention, Figure 2 is a combined perspective view showing the check valve of the present invention. Figure 3 is a perspective view showing the hot water inlet of the check valve of the present invention, Figure 4 is a front view showing the inside of the check valve of the present invention.

The check valve 1 of the present invention heats the water supplied from the hot water storage tank 29 installed in the hot water heater 30 by the heater 32 and flows back to the hot water storage tank 29 through the check valve 1. The hot water is circulated to the hot water mat by the expansion pressure generated by blocking the heat, and when the expansion pressure decreases, the water is supplied to the heater 32 through the check valve 1 to be heated and at the same time inside the check valve 1. Collected air is discharged to the outside.

Therefore, the check valve 1 of the present invention consists of a main body 2, primary and secondary blocking plates 3 and 4, a partition 7, a bridle 14, and a bubbling preventing cap 15.

The main body 2 of the check valve 1 has a box shape and forms an opening 19 so that the part in close contact with the side wall of the hot water storage tank 29 is opened, and the edge of the opening 19 is pieced on the side wall. A piece hole is formed in the flange type so that it can be tightened and attached.

The opening 19 is attached to a side wall of the hot water storage tank 29 and connected to a supply pipe 33 for supplying water to the heater 32.

In addition, the other side of the main body 2 forms a hot water inlet 21 in a direction opposite to the opening 19, and a valve chamber 12 is formed between the opening 19 and the hot water inlet 21.

The valve chamber 12 has an insertion frame 20 formed to protrude in a shape toward the opening 19 from the edge of the hot water inlet 21, the primary blocking plate 3 into the insertion frame 20. ), The partition (7), the secondary blocking plate (4) is inserted in sequence to serve to hold up so as not to be separated up, down, left and right.

 A fastening pin 24 protrudes horizontally toward the opening 19 at the upper portion of the insertion frame 20, and the fastening pin 24 has a primary blocking plate 3, a partition 7, and a secondary blocking plate ( The upper part of 4) is sequentially fitted.

The primary blocking plate 3 and the secondary blocking plate 4 are formed in the same structure in the shape of a plate shape corresponding to the insertion frame 20.

The primary blocking plate 3 has a fastening hole 5 formed at an upper portion thereof to be fitted to the fastening pin 24, and a lower surface of the first blocking plate 3 protrudes convexly to open and close the hot water inlet 21. When the expansion pressure is too strong and the expansion pressure is too strong to be inserted into and separated from each other, the cross-shaped cutting line 10 which is partially cut by the expansion pressure is opened, and the expansion pressure is discharged to the hot water inlet 21.

In addition, the partition 7 formed on the rear surface of the primary blocking plate 3 in the same manner as the insertion frame 20 and fitted to the fastening pin 24 has an upper portion so as to maintain a gap with the primary blocking plate 3. A space maintaining protrusion 6 protruding from the side is formed, and a fastening hole 5 is formed therein so as to insert the fastening pin 24 therein, and an inlet hole 8 so that hot water flows into the lower part of the fastening hole 5. ) Is formed.

In addition, the secondary blocking plate 4 formed in the same structure as the primary blocking plate 3 is inserted into the rear surface of the partition 7 so that the protruding portion is opened and closed to open and close the inlet hole 8 by expansion pressure and hot water supply. And the folding is possible by the elastic force to be separated and at the same time when the expansion pressure is cut partly cut by the expansion pressure is in close contact with the cross-shaped cutting line 10 is opened to discharge the expansion pressure to the hot water inlet (21).

On the other hand, it is preferable that the primary and secondary barrier plates 3 and 4 be made of a rubber material in order to improve elasticity and sealing force.

In addition, the primary and secondary blocking plates 3 and 4 have an elastic hole 11 penetrating a part between the fastening hole 5 and the convex portion to maximize the elastic force when folded.

In addition, the fixing cap 9 is fitted to the fastening pin 24 so that the first blocking plate 3, the partition 7, and the second blocking plate 4 are not separated from the fastening pin 24.

When the expansion pressure in the check valve 1 is lowered, the air inside the valve chamber 12 is discharged to the outside to prevent noise and expansion of the hot water storage tank 29 by the expansion pressure to facilitate the bubbling prevention cap 15 Is fastened.

In order to fasten the break-preventing cap 15, an assembling hole 16 is formed on the upper surface of the main body 2 so as to be positioned between the secondary blocking plate 4 and the opening 19.

The assembly hole 16 is inserted into the separation cap 15 so as to protrude out of the valve chamber 12.

The breakaway cap 15 has a cylindrical shape, the lower part of which is open, and a locking step is formed on the open lower edge so as not to be detached when fitted to the assembly hole 16, and the air can be discharged to the closed upper center. The discharge hole 17 is formed.

When the expansion pressure rises in the inside of the air bleed prevention cap 15, the discharge hole is increased to close the discharge hole (17), and when the expansion pressure is low, the discharge hole is lowered to flow in from the left and right to discharge the air into the discharge hole (17). The bridle 14 in which the groove 18 was formed is inserted.

In addition, the bubbling prevention cap (15) is supported so that it is not detached during the lowering of the bridle (14) and the air is passed through the bubbling cover (13) having a central hole (28) so that it can be discharged to the discharge hole (17) It is inserted into the lower portion of the prevention cap 15.

5 is an exploded perspective view illustrating the first and second blocking plates of the present invention, wherein the lower part of the first inlet hole 8 of the partition 7 is in contact with a part of the rear surface of the primary blocking plate 3. One or more adhesion preventing projections 23 toward () are integrally formed.

Therefore, when the primary blocking plate 3 is folded in the direction of the partition 7, the back surface of the partition 7 and the primary blocking plate 3 may come into close contact with each other due to the nature of the rubber material, thereby preventing the original condition. To ensure that only minimal parts are contacted.

6A is an exploded perspective view illustrating another embodiment of the first and second blocking plates of the present invention, and the inlet pressure may be discharged in the same way as the cross shape even when the cutting line 10 is cut in a straight line. The cutting line of the plate is opened to the expansion pressure. When the pressure is weakened, it is returned to the original state to circulate the hot water heated by the heater by the expansion pressure in the valve chamber.

FIG. 7 illustrates that the cutting line 10 is removed from the first and second blocking plates 3 and 4 to prevent hot water from flowing back to the hot water inlet 21, and the hot water heated by the heater 32 by the expansion pressure. Circulated to the hot water mat (31).

Figure 8 is a perspective view showing another embodiment of the blocking plate of the present invention, Figure 12 is a cross-sectional view showing another operating state of the check valve of the present invention, the opening projection 26 on the back of the primary blocking plate (3) ) Protrudes horizontally so that the primary blocking plate 3 is folded to open the hot water inlet 21, pushing the front of the secondary blocking plate 4 to open the inlet hole 8 of the partition 7 at the same time. Configure to work together.

In addition, there is also a function of supporting the secondary blocking plate 4 when the expansion pressure is increased in the valve chamber 12.

FIG. 9 is a cross-sectional view illustrating the present invention of the present invention, when the inflation pressure is lowered in the state in which the inlet 14 is raised by the inflation pressure and is in contact with the outlet hole 17 of the inlet release cap 15. ) Should be separated by falling, but if not separated in contact state to be separated by the load of the center weight (25).

10 is a cross-sectional view showing an operating state of the check valve of the present invention.

The check valve 1 of the present invention is installed in the hot water storage tank 29 to supply water to the heater 32 to block the inflation pressure generated when heating with hot water so as not to be discharged to the outside. Sealing the discharge hole 17 of the break-preventing cap 15, the primary blocking plate 3 seals the hot water inlet 21, the secondary blocking plate 4 is the inlet hole of the partition (7) By blocking 8) to prevent backflow, hot water is circulated and supplied to the pipe of the hot water mat 31 by the expanded pressure.

On the contrary, when the pressure of the check valve 1 is lowered, the bure 14 is lowered to open the discharge hole 17 and at the same time, the primary and the second valves sealing the inlet 8 and the hot water inlet 21 by the expansion pressure. When the interference of the car blocking plate (3, 4) is terminated is folded to open the inlet hole 8 and the hot water inlet 21 to introduce hot water, it is repeated to heat the heater 32 again.

Therefore, the present invention enables active flow control according to the expansion pressure, so that when the water pressure drops considerably, such as when there is a circulation failure, a small flow rate of water flows into the hot water inlet side, thereby more effectively coping with the circulation failure. Of course, it prevents the noise generated by the bubble generated in the event of a circulation failure to move in the reverse direction of the water circulation and hit the check valve side.

11 is a cross-sectional view showing the operation state of the beret in the check valve of the present invention, the guide grooves 22 are formed on both sides of the inner circumferential surface of the breakaway prevention cap 15, and the beret 14 is formed in the guide groove 22. A guide protrusion 27 is formed to correspond to the inserted and lifted operation to close the discharge hole 17 by the correct lift operation.

Figure 13a, b is an exemplary view showing an installation state of the check valve of the present invention.

A hot water storage tank 29 and a heater 32 are installed inside the hot water heating device 30 to circulate the hot water heated by the heater in the pipe of the hot water mat 31 by the expansion pressure.

In addition, the check valve 1 is attached to the hot water storage tank 29 to supply water or circulated hot water through a supply pipe 33 connected to the heater 32, and to circulate the heated hot water, the valve chamber 12. It blocks the expansion pressure from the inside to the outside and prevents the hot water from flowing back.

In addition, the hot water introduced into the pipe of the hot water mat 31 is supplied to the hot water storage tank 29 through the inlet pipe 34 and circulated.

1: check valve 2: main body
3: primary barrier 4: secondary barrier
5: fastener 6: spacing
7: partition 8: inlet hole
9: fixed cap 10: cutting line
11: elastic hole 12: valve chamber
13: bure cover 14: bure
15: Burring prevention cap 16: Assemblyman
17: outlet hole 18: inlet groove
19: opening 20: insertion frame
21: hot water inlet 22: guide groove
23: adhesion preventing protrusion 24: fastening pin
25: center weight 26: opening protrusion
27: guide protrusion 28: through hole
29: hot water storage tank 30: hot water heating device
31: hot water mat 32: heater
33: supply pipe 34: inlet pipe

Claims (8)

The box-shaped main body forms an opening on one side of the inner side, and is connected to a supply pipe for supplying water to the heater attached to the side wall of the hot water storage tank in a flange type at the edge of the opening, and the other side forms a hot water inlet. On the inner circumferential surface on which the hot water inlet is formed in the state where the valve chamber is formed, an insertion frame is formed so that a recess is formed in a shape around the edge of the hot water inlet toward the opening, a fastening pin protruding toward the opening on the upper portion of the insertion frame, and the fastening pin. There is a fastening hole is formed in the upper part of the plate shape corresponding to the insertion frame is fitted into the upper part, the lower part is convexly protruded to open and close the hot water inlet, the folding by the elastic force to be inserted and separated in the hot water supply and expansion pressure. When the expansion pressure is high at the same time, it is partly cut and closely contacted by the expansion pressure. First blocking plate, which discharge line is beoleojyeo the inflation pressure in the hot water inlet,
The rear surface of the primary blocking plate is formed in the same way as the insertion frame is fitted to the fastening pins and the interval maintaining protrusion is formed in the upper one side of the fastening hole is formed in the upper side so as to maintain a gap with the primary blocking plate, the lower part of the hot water The plate-shaped partition formed with the inlet hole to be introduced, and the back of the partition is formed in the same manner as the primary blocking plate so that the protruding portion is folded by the elastic force so that the protruding portion is inserted and separated to open and close the inlet hole by expansion pressure and hot water supply. At the same time, when the expansion pressure is high, the secondary cutoff plate which is partially cut by the expansion pressure opens and closes, and the expansion block discharges the expansion pressure to the hot water inlet, and the first cutoff plate, the partition, and the second cutoff plate are separated from the fastening pin. A fixing cap which is fitted so as not to be fitted, and an assembling hole formed at an upper surface of the main body between the secondary blocking plate and the opening; The lower part is opened in a cylindrical shape so as to discharge and block the air to be inserted into the protrusion, and the open edge is formed with a locking step so that it is not detached when fitting into the assembly hole and a discharge hole is formed in the closed upper center to discharge the air. The air bleeding prevention cap and the air bleeding cap is sealed in the inside of the air bleeding prevention cap when the pressure rises by pressure, and when the pressure drops, the inlet is formed in the inlet grooves through the left and right to discharge the air to the discharge hole; The hot water mat check valve, characterized in that the buckle cover has a central hole through which the air is passed through the cap to prevent it from being separated from the cap.
The hot water mat check valve of claim 1, wherein a contact preventing protrusion is integrally formed at a lower portion of one side of the inlet hole toward the primary blocking plate such that a part of the rear surface of the primary blocking plate is contacted.
The hot water mat check valve according to claim 1, wherein guide grooves are formed at both sides of the inner circumferential surface of the cap release prevention cap, and the guide grooves are formed to be inserted into the guide grooves so as to move up and down.
The check valve for hot water mat according to claim 1, wherein an additional weight is inserted into the upper inside of the bridle.
The check valve for hot water mat according to claim 1, wherein the primary and secondary blocking plates have elastic holes formed in the lower parts of the fastening holes to facilitate folding by elastic force.
According to claim 1, wherein the opening protrusion is horizontally protruded on the rear surface of the primary blocking plate when the primary blocking plate is folded to open the hot water inlet to push the front of the secondary blocking plate to open the inlet hole of the partition at the same time. A check valve for hot water mats, characterized in that.
The check valve for hot water mat according to claim 1, wherein the cutting line has a straight or cross shape.
The check valve of claim 1, wherein the first and second blocking plates are made of a rubber material.

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