KR200198096Y1 - Check valve assembly for faucet of single lever type - Google Patents

Abstract

The present invention generates a rapid pressure expansion on the cold water side as hot heat is transferred to the cold water through the metal body when continuously discharging only hot water. In this case, the internal volume is variably increased with respect to the expansion pressure. The present invention relates to a check valve assembly for a single lever type faucet to prevent damage to parts of the faucet. To this end, the present invention includes a check that is inserted into the inlets 50 formed at both sides of the rear side of the body to prevent the reverse flow of cold and hot water. 1. A valve, comprising: a tubular valve housing (10) having a hollow inside and penetrating both sides; One side end of the inside of the valve housing 10 is caught by the locking jaw 11 is prevented from being separated, the slide movement is inserted along the inner diameter surface of the valve housing 10, the water can flow only in one direction A check valve 20 to allow; A compression spring (30) provided on one side of the check valve (20) to elastically absorb excessive pressure applied to the check valve (20); And a stop that is forcibly fitted to an inner circumferential surface of the open side of the valve housing 10 so that the compression spring 30 provided on the open side of the valve housing 10 does not depart from the valve housing 10. It is characterized by a configuration to be made of a ring 40.

Description

Check valve assembly for faucet of single lever type

The present invention relates to a check valve assembly for a single lever type faucet, and more specifically, when hot water is continuously discharged, high-temperature heat is transferred to cold water through a metal body, causing rapid pressure expansion on the cold water side. A check valve assembly for a single lever faucet which allows the internal volume to be variably increased with respect to pressure so that particularly soft component damage in the body can be prevented.

In general, the single lever faucet for discharging cold and hot water forms an inlet (2) into which cold water and hot water flow into both sides of the body (1), respectively, as shown in FIG. The upper surface therebetween is provided with a lever (3), the configuration is such that one discharge port (4) is formed in the bottom or front immediately below the lever (3).

In addition, a cartridge 5 is provided inside the body 1 directly below the lever 3, and the cartridge 5 allows the discharge amount of cold and hot water to be adjusted by the operation of the lever 3.

On the other hand, cold water and hot water hydraulically applied to the body 1 are guided through the check valve 6 embedded in the inlet (2).

At this time, the check valve 6 is simply configured to prevent the reverse flow of water, and is configured to be enclosed by the pressure difference between the water pressure introduced to the inlet port 2 and the water already introduced into the body 1.

The check valve 6 applied to the faucet is largely made of synthetic resin and metal, but now the use of synthetic resin is gradually increasing, such a check valve 6 made of synthetic resin is as shown in FIG.

That is, inside the cylindrical valve case 6a, the non-return valve 6b is inserted into one side, and the cap 6c is coupled to the other side to prevent the non-return of the non-return valve 6b from being prevented. A valve spring 6d is inserted between the valve 6b and the cap 6c to elastically support these non-return valve 6b and the cap 6c.

One end of the tapered shape of the non-return valve 6b is in close contact with the valve seat formed at the tip of the valve case 6a by the elasticity of the valve spring 6d, and the cap 6c is As shown in FIG. 3, it is in close contact with the engaging projection 2a which protrudes inward in both inlets 2 of the faucet.

As described above, the check valve 6 inserted into the inlet 2 is opened and closed simply by the pressure difference between the water pressure introduced to the inlet 2 and the water already introduced into the body 1, as described above. If the water pressure guided to the inlet 2 is lower than the inside of the body 1, the non-return valve 6b is pushed toward the cap 6c by the high pressure water, thereby compressing the valve spring 6d. Water moves toward the body 1 through the space formed when the prevention valve 6b is spaced apart from the valve seat.

This difference in water pressure is caused by the phenomenon that the internal water pressure of the body 1 is lowered by discharging water through the discharge port 4 by the operation of the lever 3 in the body 1, so eventually In the state in which water is discharged, the check valve 6 is always kept open so that the discharge operation can be performed continuously.

On the other hand, in the state where the water is no longer discharged by the operation of the lever 3, that is, the water is stagnant, the water pressure induced to the inlet port 2 and the water pressure inside the body 1 are the same. By the repulsive force of the valve spring 6d, the non-return valve 6b is brought into close contact with the valve seat of the valve case 6a while the pressing force for pushing the valve 6b is removed, and thus the water of the water through the non-return valve 6b is prevented. No flow will occur at all.

In this way, the conventional check valve 6 has a simple function of continuously supplying water to the body 1 or preventing the water already supplied to the body 1 from flowing back according to whether the water is discharged by the operation of the lever 3. Will only perform.

On the other hand, in the faucet that uses cold water and hot water at the same time, the cold water and hot water are guided to both sides of the cartridge 5 of the body 1, respectively, and the mixing degree and discharge amount of the cold water and hot water are changed according to the operation state of the lever 3. To be controlled.

However, when only the hot water is discharged for a long time, the body 1 in which the hot water is induced is heated, thereby transferring the generated heat to the cold water in a stagnant state.

Cold water supplied to one side of the body 1 deteriorated by such heat transfer is usually heated to about 10 ~ 90 ℃ to generate an expansion pressure of about 100 kg, the standard pressure resistance of the faucet is about 17.5 ~ 40 kg As a result, there is a problem that the synthetic resin or soft parts inside the body 1 are easily broken due to excessive expansion pressure.

The present invention is designed to solve the above problems, the main purpose of the present invention is the pressure caused by excessively rising by the heat transferred from the hot water stagnant state at one side of the body when only the hot water is continuously discharged During expansion, the check valve is moved by the expansion pressure to expand the space on one side of the body filled with cold water so that the expansion pressure is absorbed, thereby preventing damage to components inside the body.

1 is an exploded perspective view showing a typical single lever faucet,

Figure 2 is a side cross-sectional view of a check valve applied to a conventional faucet,

Figure 3 is a side cross-sectional view showing a state in which a conventional check valve is coupled to the inlet,

4 is an exploded perspective view of a check valve assembly according to the present invention;

5 is a side cross-sectional view of the check valve assembly of FIG.

6 is a side cross-sectional view showing a configuration in which the valve housing of FIG. 5 is formed as a body inlet;

Figure 7 is a side cross-sectional view showing a state in which the check valve assembly according to the present invention is coupled to the inlet;

8 is an operating state diagram showing a state in which the check valve slides by heating of cold water by the discharge of hot water according to the present invention.

Explanation of symbols on the main parts of the drawings

10 valve housing 20 check valve

21 valve case 22 check valve

23: cap 24: valve spring

30: compression spring 40: stop ring

50: body inlet

In order to achieve the above object, the present invention is a check valve is inserted into the inlet formed on both sides of the rear of the body to prevent the reverse flow of cold water and hot water, the inside of the tubular valve housing penetrating both sides; A check valve which is inserted into the valve housing so as to be slidably moved along the inner diameter surface of the valve housing while preventing one side end from being caught by a locking jaw and allowing water to flow in only one direction; A compression spring provided to one side of the check valve to elastically absorb excessive pressure applied to the check valve; And a stop ring forcibly fitted to an inner circumferential surface of the open side of the valve housing so that the spring provided to the open side of the valve housing is not separated from the valve housing.

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

Figure 4 shows a perspective view of the separated state of the check valve assembly according to the present invention, the present invention consists largely of the valve housing 10 and the check valve 20, the compression spring 30 and the stop ring 40 Configuration.

FIG. 5 is a cross-sectional view of each of these components assembled, wherein the valve housing 10 is a tubular member having an empty inside and open to both sides.

The valve housing 10 is configured to be inserted into the inlet of the faucet so that the outer circumferential surface is single-layered and the outer diameter is different, and the locking jaw 11 protruding inwardly is formed at one end of the smaller outer diameter.

The valve housing 10 is inserted into the inlet port while being securely hooked to the engaging protrusion projected on the inner diameter surface of the inlet port so that the valve housing 10 is in close contact with the inner diameter surface of the inlet port. More preferably, the O-ring 12 is fitted to the outer end of the outer circumferential surface having a larger outer diameter.

The check valve 20 has a structure substantially similar to that of the prior art, and the check valve 20 is again prevented from flowing backward in which the tubular valve case 21 and the slide case can be built in the valve case 21. A cap 23 and a non-return valve (not shown) formed at the other end corresponding to the valve seat 21a formed at one end of the valve 22 and the valve case 21 to guide the slide movement of the non-return valve 22. It is a structure which consists of a valve spring 24 which is piled between 22 and the cap 23, and elastically supports the backflow prevention valve 22. As shown in FIG.

The check valve 20 is prevented from being separated from the valve housing 10 while the cap 23 end is caught by the catching jaw 12 formed at one end of the valve housing 10.

Compression springs 30 are installed on the other side corresponding to one side of the locking jaw 12 of the check valve 20 so that the check valve 20 does not flow in the valve housing 10.

The compression spring 30 that elastically supports the check valve 20 stops at the other end inner circumferential surface corresponding to one end where the locking jaw 12 of the valve housing 10 is formed so as not to be detached from the valve housing 10 again. The ring 40 is forcibly fitted.

Therefore, the check valve 20 is strongly elastically supported by the compression spring 30 between the locking jaw 11 of one end and the stop ring 40 of the other end of the valve housing 10.

Meanwhile, the present invention forms a locking jaw 51 at the inner end of the inner diameter of the body inlet 50 as shown in FIG. 6, and uses the check valve 20 and the compression spring 30 as the inner diameter of the inlet 50. After inserting directly, the stop ring 40 may be inserted into the outer end of the inner diameter portion.

When the present invention having such a configuration is inserted into the inlet formed on both sides of the rear of the faucet as shown in FIG. 7, the valve housing 10 is connected to the locking protrusion 51 protruding from the inner circumferential surface of the inlet 50 as described above. While the portion of the outer peripheral surface of the valve is caught, the O-ring 12 inserted into the outer peripheral surface of the front end portion of the valve housing 10 is in a state of being closely coupled with the inner peripheral surface of the inlet port 50.

In such a state, when the cold water is discharged by operating the lever of the faucet or the hot water is properly mixed with the cold water, only the non-return valve 22 of the check valve 20 slides to perform the same function as before. do.

Meanwhile, if only hot water is continuously discharged through the discharge port of the faucet, the check valve 20 of the flowing hot water inlet port 50 smoothly supplies the hot water to the body while the flow path is opened, but the cold water maintains the stagnant state. do.

At this time, as the hot water body is continuously heated, the cold water is transferred to the stagnant body, and the heat transferred thus heats the cold water.

In other words, when only hot water is continuously discharged, the hot water body is extremely hot, and the high temperature heat is transferred to the cold water side to heat the cold water to about 10 to 90 ° C. as described above.

Once the cold water introduced into the body through the check valve 20 is heated, the space filled with the cold water is thermally expanded, and this expansion pressure is transferred to the inlet 50 so that the slide movement is inserted into the valve housing 10. The check valve 20 is moved to the open side of the inlet 50 as shown in FIG.

When the check valve 20 is moved in this way, the compression spring 30 that has been elastically supporting the check valve 20 at one side is compressed, and the compression spring 30 is compressed, so that the length of the check valve 20 is moved. The volume of the space where the cold water stagnates in the body increases as much as the generated space.

On the other hand, by reducing the expansion pressure by the expansion of the space by the movement of the check valve 20, when the cold water is discharged, the water pressure on the body side is lower than the water pressure induced to the inlet port 50 side and the check valve 20 is opened and At the same time, it is moved to the initial position by the elastic force of the compression spring (30).

Therefore, if the volume of the space in which the cold water is filled is increased by moving the check valve 20 to expand the pressure caused by the high temperature of the cold water, the expansion pressure is absorbed by the increased volume space and the internal pressure is always stable. Can be maintained.

This is made possible by maintaining the expansion pressure due to the high temperature of the cold water to be below the pressure resistance strength of the parts in the body.

In this way, by further reducing the strength of the expansion pressure caused by the high temperature of the cold water by the hot water it is possible to maintain the enhanced durability while preventing damage to the components provided inside the body.

Therefore, the simple improvement of the check valve assembly according to the present invention allows the cold water side expansion pressure, which is increased by the hot water in the body, to be appropriately responded by the action of expanding the filling space of the cold water, thereby preventing excessive expansion pressure due to the high temperature of the cold water. It has a very useful effect of improving the reliability of the faucet by improving the durability of the faucet while increasing the durability while preventing damage to parts in the body, particularly soft parts.

Claims (5)

In the check valve is inserted into the inlet 50 formed on both sides of the rear of the body to prevent the reverse flow of cold water and hot water, A tubular valve housing 10 having a hollow inside and penetrating both sides; One side end of the inside of the valve housing 10 is caught by the locking jaw 11 is prevented from being separated, the slide movement is inserted along the inner diameter surface of the valve housing 10, the water can flow only in one direction A check valve 20 to allow; A compression spring (30) provided on one side of the check valve (20) to elastically absorb excessive pressure applied to the check valve (20); And A stop ring forcibly fitted to the inner circumferential surface of the open side of the valve housing 10 in order to prevent the compression spring 30 provided on the open side of the valve housing 10 from being separated from the valve housing 10. 40; Check valve assembly for single lever faucet provided. The single lever-type faucet according to claim 1, wherein the O-ring 12 is fitted to the outer peripheral surface of the open end of the valve housing 10 so as to be in close contact with the inner diameter surface of the inlet 50 of the body. Check valve assembly. The check valve assembly of claim 1, wherein the valve housing (10) is formed so that its outer diameter is stepped so as to be caught by a locking protrusion (51) protruding from the inner diameter surface of the inlet (50). According to claim 1, wherein the check valve 20 is a tubular valve case 21, a non-return valve 22 is built in the slide case to enable the slide movement inside the valve case 21, the valve case A cap 23 for guiding the slide movement of the non-return valve 22 and the non-return valve 22 and the cap are formed at the other end corresponding to the valve seat 21a formed at one end of the 21. A check valve assembly for a single lever type faucet, which is constituted by a valve spring (24) which is installed between (23) and resiliently supports the check valve (22). According to claim 1, wherein the body inlet 50 is formed in the inner end of the engaging jaw 51, the check valve 20, the compression spring 30 and the stop ring 40 is inserted directly therein Check valve assembly for single lever faucets.