JP2005282264A - Hot and cold water pressure regulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot and cold water pressure regulator easily post-fittable even in a hot and cold water combination faucet in which a distance between a cold water supply tube and a hot water supply tube is not constant such as a kitchen faucet and a wall mounted faucet. <P>SOLUTION: This regulator 1 is fitted to the hot and cold water combination faucet for regulating a hot water pressure and a cold water pressure. The regulator comprises a pressure regulating part 2 installed on the high-pressure side of a cold water supply pipe 4 and a hot water supply pipe 8 and regulating the hot water pressure approximately equal to the cold water pressure and a flexible connection pipe 3 connecting the pressure regulating part 2 to the hot water supply pipe or the cold water supply pipe and transmitting the pressure on the low pressure side to the pressure regulating part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hot and cold pressure adjusting device that can be easily attached to a hot and cold water mixing faucet.

  Hot and cold water faucets are widely used in kitchens, washrooms, bathrooms, etc., and by turning the temperature control handle to the left and right, the amount of water and the amount of hot water are adjusted to obtain hot water at a desired temperature. The problem with such hot and cold water mixing faucets is that the hot water pressure is usually a pressure loss of the hot water heater or a hot water storage type hot water heater, so the pressure of the water sent from the hot water pipe is high, and the hot water pressure sent from the hot water pipe is Low. Therefore, even if the temperature control handle is slightly turned, the hot water temperature changes abruptly (see FIG. 4A). When a water purifier is attached to the tip of the faucet, the situation is further deteriorated because the flow rate is reduced on the downstream side of the hot water mixing section.

  Many people squeeze the water tap on the water supply pipe side to avoid changes in the hot water temperature, but when the hot water supply stops, the water pressure is maintained at the same high pressure as the water supply pipe pressure, so cold water comes out at the start of hot water supply. There is a difficulty that it ends. In addition, there are many sites where the stop cocks on the water supply pipe side and the hot water supply pipe side are not attached for reasons such as cost reduction.

  There are many prior arts regarding the pressure regulation of a hot and cold water mixing faucet. Patent Documents 1 and 2 disclose hot water that adjusts the hot water pressure and the water pressure by moving the pressure regulating valve body using the hot water pressure on the hot water supply pipe side, thereby reducing the water pressure by narrowing the flow path on the water supply pipe side. An invention relating to a pressure regulating structure is described.

  Further, Patent Document 3 includes a piston having two valve bodies that move in accordance with the secondary pressure of hot water and water, and can balance the hot water, and this piston can be rotated to prevent clogging of dust and the like. An invention relating to an automatic pressure regulating valve is described.

  Further, Patent Document 4 includes a bellows type hot water supply pressure transmission means communicating with a hot water supply passage, and by operating the valve seat on the water supply passage side connected to the bellows by expansion and contraction of the bellows due to fluctuations in the hot water supply pressure, An invention relating to a pressure balancing valve having a secondary pressure of approximately the same pressure is described.

  Furthermore, Patent Document 5 uses a balance valve body that adjusts the pressure of the hot water and the water pressure on the primary side, and seals the gate valve portion that separates the water side and the hot water side of the balance valve body with a seal ring, An invention relating to a hot water pressure balancer in which water or hot water is prevented from flowing in the opposite direction from the clearance of the gate valve portion is described.

Japanese Utility Model Publication No. 01-128070 Japanese Utility Model Publication No. 02-473 Japanese Patent Laid-Open No. 01-261577 Japanese Patent Laid-Open No. 07-113474 JP 11-51219 A

The pressure regulating means for the hot and cold water mixing faucets described in Patent Documents 1 to 5 all have a structure in which the connecting portions of the water supply pipe and the hot water supply pipe are integrated. Therefore, even if it is going to attach a pressure regulation means by retrofitting, since the space | interval of a water supply pipe and a hot-water supply pipe varies in each spot, retrofitting is difficult.
SUMMARY OF THE INVENTION An object of the present invention is to provide a hot and cold pressure adjusting device that can be easily retrofitted to a hot and cold water mixing faucet where the interval between the water supply pipe and the hot water supply pipe is not constant.

In order to solve the above problems, the present invention is an apparatus for adjusting a hot water pressure and a water pressure by being attached to a hot and cold water mixing faucet, and installed on the high pressure side of the water supply pipe side or the hot water supply pipe side. The pressure is adjusted to the pressure on the low pressure side, and the pressure adjustment unit for adjusting the hot water pressure and the water pressure to be approximately equal, and the pressure adjustment unit and the hot water supply pipe or the water supply pipe are connected to the low pressure side, and the pressure on the low pressure side is adjusted as described above. It comprised from the flexible connection pipe | tube transmitted to a pressure part.
By setting it as the said structure, the temperature adjustment of a hot-water mixing faucet can be easily performed by adjusting the pressure of a water side and a hot water side substantially equally also with a hot-water mixing faucet.

  Two flexible connecting pipes can be provided, and the openings on the hot water supply pipe side or the water supply pipe side of the two connecting pipes can be arranged in a vertical line along the flow of hot water or water. By setting it as such a structure, the pressure difference of hot water arises between two connection pipes. This pressure difference is hygienic because hot water in the connecting pipe and the pressure adjusting section is circulated without stagnation.

  Of the two flexible connecting pipes, one opens in the hot water supply pipe or the water supply pipe against the flow of hot water or water, and the other one is the wall surface of the hot water supply pipe or the water supply pipe. It is possible to have a configuration in which it is opened in the downstream direction of hot water or water. By adopting such a configuration, the hot water in the connecting pipe is circulated more efficiently.

  The hot-water pressure adjusting device according to the present invention includes a flexible connecting pipe that transmits the pressure on the high-pressure side of the hot water supply pipe side or the water supply pipe side to the pressure adjustment section, so that the interval between the water supply pipe and the hot water supply pipe is constant. Even hot water and water mixing faucets can be easily retrofitted, and the temperature of the hot and cold water mixing faucets can be easily adjusted by adjusting the pressure on the water side and the hot water side to be approximately equal.

  Hereinafter, the method of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an example in which the hot and cold pressure control apparatus of the present invention is combined with a hot and cold water mixing faucet, FIG. 2 is a cross-sectional view in the direction AA of FIG. It is sectional drawing of a pressure apparatus. In this figure, the hot-water pressure adjusting device 1 has a water-side pressure adjusting unit 2 and a flexible connecting pipe 3 as main components.

In the figure, 4 is a water supply pipe, and high-pressure water (primary water, water pressure is represented as “ _PC1 ”) supplied from the water supply pipe 4 through the water-side stop cock 5 is supplied to the water-side pressure adjusting unit 2. enter. Then, the pressure is reduced by the water-side pressure adjusting unit 2 to become secondary water (water pressure is expressed as “PC ₂ ”), and enters the hot and cold water mixing faucet 7 through the water supply pipe 6.

On the other hand, the hot water supplied from the hot water supply pipe 8 through the hot water faucet 9 (the hot water pressure is represented as “P _H ”) includes an adapter 10 and a hot water supply pipe 11 for connecting the flexible connecting pipe 3. Pass through the hot water and water faucet 7.

The secondary water and hot water that have entered the hot-water mixing faucet 7 are adjusted to the desired hot water by the temperature control handle 12 and flow out from the faucet 13. Incidentally, hot water supply pipe 8, the adapter 10 and the hot water supply pipe 11 is imparted with convenience on separate code description, for Yu圧P _H and the change in flow rate of the water is not in any of the tube portion, the one throughout It can be thought of as a hot water pipe.

The material of the flexible connection tube 3 is not particularly limited as long as it can withstand the Yu圧P _H, it can also be used of any type as long as the liquid for withstand-voltage flexible hose is usually used. Moreover, a small pipe diameter is sufficient for the purpose of transmitting the hot water pressure to the water-side pressure adjusting unit 2, and for example, a pipe having an inner diameter in the range of 0.1 to 10 mm can be freely employed. There is no restriction | limiting in particular also about the length of the flexible connection pipe 3, It can set suitably according to arrangement | positioning of the water supply pipe and hot water supply pipe | tube of a construction site.

  The structure of the water-side pressure adjusting unit 2 is such that a flow path member 14 is fixed in a cylindrical main body 21, a holder 15 is attached to the flow path member 14, and a movable type is provided between the flow path member 14 and the holder 15. A pressure regulating valve body 16 is provided. A flow path 14 a is formed in the flow path member 14, and a cup-shaped portion 14 b is formed in the upper half of the flow path member 14, and the movable pressure regulating valve body 16 is formed along the outer peripheral surface of the cup-shaped portion 14 b. Slides. Further, a pressure chamber 17 into which hot water flows is formed through the flexible connecting pipe 3 on the inner side of the cup-shaped portion 14 b and the inner side of the movable pressure regulating valve body 16.

Usually, the primary water pressure (P _C1 ) is higher than the hot water pressure (P _H ) (P _C1 > P _H ), but the inside of the pressure chamber 17 of the water-side pressure regulating unit 2 is equal to the hot water pressure (P _H ). . Then, a pressure difference is generated between the Yu圧in the pressure chamber 17 to act primary pressure (P _C1) to the stepped portion 16a and the top surface 16b of the movable die regulator valve body 16, the movable mold by the pressure difference The pressure regulating valve body 16 moves downward as shown in FIG. 3, the opening of the flow path 14a is narrowed, and the secondary water pressure (P _C2 ) on the downstream side of the flow path 14a decreases. As a result, the state of P _H = PC ₂ can be maintained.

If the hot water pressure P _H increases or the primary water pressure P _C1 decreases, P _H > P _C2 , the movable pressure regulating valve body 16 is pushed up, the flow path 14a is opened, and the inflow amount of primary water increases. As a result, P _C2 increases and returns to the state of P _H = P _C2 . Further, the _P H _{<P C2} when Yu圧_{P H} is either lowered, or primary pressure _{P C1} is increased. Then, in order to push down the movable pressure regulating valve body 16, the flow path 14a is narrowed to reduce the inflow of primary water. As a result, P _C2 decreases and returns to the state of P _H = P _C2 .

  Note that a portion where the outer side surface of the movable pressure regulating valve body 16 and the inner side surface of the holder 15 are in contact with each other is a damper due to a resistance resistance when water passes through the gap of the resin ring by a resin ring 18 having a notch gap in part. Since the effect is provided, the movable pressure regulating valve body 16 does not operate suddenly even when the pressure of hot water or water changes suddenly. For this reason, the noise by a water hammer can be avoided.

FIG. 4 is a table showing an example of the effect of improving the temperature control function when the hot water / water pressure adjusting device of the present invention is attached. Here, water having a primary water pressure P _C1 of 0.2 Pa and a temperature of 15 ° C. and hot water having a hot water pressure of 0.05 Pa and a temperature of 60 ° C. are used, and the temperature control handle of the hot and cold water mixing faucet is fully opened (high temperature The water discharge temperature when the water side was opened while gradually changing the handle angle was examined.

  FIG. 4A shows an example in the case where the hot water / water pressure regulator of the present invention is not attached (conventional). In this example, even if the angle of the temperature control handle is slightly changed, the water discharge temperature rapidly decreases, and the water temperature has completely reached 15 ° C. before moving 50 degrees. On the other hand, FIG. 4B is an example when the hot water pressure adjusting device of the present invention is attached, but when the angle of the temperature control handle is gradually changed, the water discharge temperature gradually decreases, and the angle becomes 150 degrees. When it reaches, it has dropped to the water temperature. Therefore, it can be seen that the temperature can be adjusted very smoothly by retrofitting the hot and cold pressure regulator of the present invention.

  FIG. 5 is a cross-sectional view showing another example in which the hot and cold pressure adjusting device of the present invention is combined with a hot and cold water mixing faucet. In this figure, the water side pressure regulation part 2 in the hot-water pressure regulation apparatus 1 becomes a structure different from FIG. However, the primary water supplied from the water supply pipe 4 through the water-side stop cock 5 enters the water-side pressure adjusting unit 2. And it is the same as the water side pressure regulation part 2 of FIG. 1 that it is pressure-reduced by the water side pressure regulation part 2, turns into secondary water, enters the hot-water mixing faucet 7 through the water supply pipe 6. FIG.

  The water-side pressure adjusting unit 2 used in this example is provided with a cylindrical movable pressure regulating valve body 16 having a flange in a cylinder, and a non-movable cylindrical flow path member 14 that also serves as an outer cylinder and a holder 15 are combined. In this way, the pressure chamber 17 into which hot water is introduced from the flexible connecting pipe 3 is configured. Near the central portion of the flow path member 14, a flow path 14a through which primary water passes is formed, and in this figure, the flow path 14a is shown in a fully open state.

The movable pressure regulating valve body 16 moves in the vertical direction by the balance between the pressure receiving surface 16 c and the pressure chamber 17. When the hot water pressure P _H rises or the primary water pressure P _C1 drops, the water side pressure regulating unit 2 becomes P _H > P _{C2 and the} movable pressure regulating valve body 16 is pushed up. The amount of inflow increases. As a result, P _C2 increases and returns to the state of P _H = P _C2 . Further, when the hot water pressure P _H decreases or the primary water pressure P _C1 increases, P _H <P _C2 is satisfied. Then, in order to push down the movable pressure regulating valve body 16, the flow path 14a becomes narrow and the inflow of primary water is reduced. As a result, P _C2 decreases and returns to the state of P _H = P _C2 . Since the outer side surface of the movable pressure regulating valve body 16 and the inner side surface of the holder 15 have a damper effect in the gap g between the holder 15 and the movable pressure regulating valve body 16, the pressure of hot water or water changes suddenly. Even in this case, the water hammer can be avoided by the resistance when passing through the gap.

  FIG. 6 is a cross-sectional view showing an example of a hot water / water pressure regulator of the present invention having two flexible connecting pipes. As shown in this figure, the openings 3a and 3b on the adapter 10 side of the two flexible connecting pipes 3 and 3 are arranged in tandem along the flow of hot water in the hot water supply pipe 8, thereby providing 2 A pressure difference can be generated between the two connecting pipes. Moreover, in this figure, as for one of the two flexible connection pipes 3 and 3, the opening part 3a by the side of the adapter 10 is opened against the flow of hot water. The other opening 3 b is open on the inner wall surface of the adapter 10. By thus changing the opening directions of the openings 3a and 3b, the pressure difference in the two flexible connecting pipes 3 and 3 is further widened, so that the hot water in the pipes is circulated more efficiently.

FIG. 7 shows another embodiment of the openings 3a and 3b on the adapter 10 side.
The opening 3a opens facing the hot water flow, and the opening 3b opens toward the downstream direction of the hot water flow.

Sectional drawing which combined the hot-water pressure regulator which concerns on this invention with the hot-water mixing faucet AA direction sectional view of FIG. Cross-sectional view of a hot water pressure regulator that explains the operation of the pressure regulating valve body The chart which shows an example of the effect of the temperature control function which attached the hot-water pressure regulator. Sectional drawing which shows the other example which combined the hot water / water pressure regulator with the hot / cold water faucet Sectional drawing which shows the other example provided with two flexible connection pipes The figure which shows another Example of the opening part of a flexible connecting pipe

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hot-water pressure control apparatus, 2 ... Water side pressure control part, 3 ... Flexible connection pipe, 3a, 3b ... Opening part of flexible connection pipe, 4 ... Water supply pipe, 5 ... Water side stop cock, 6 DESCRIPTION OF SYMBOLS ... Water supply pipe, 7 ... Hot water mixing faucet, 8 ... Hot water supply pipe, 9 ... Hot water side stop cock, 10 ... Adapter, 11 ... Hot water supply pipe, 12 ... Temperature control handle, 13 ... Faucet, 14 ... Channel member, 14a ... Flow path, 14b ... Cup-like part, 15 ... Holder, 16 ... Movable pressure regulating valve body, 16a ... Step part, 16b ... Top face, 16c ... Pressure receiving face, 17 ... Pressure chamber, 18 ... O-ring, 21 ... Water side pressure adjusting section _{body, P C1} ... 1 primary water _{pressure, P C2} ... 2 primary water pressure, P H _... Yu圧, g ... gap.

Claims (3)

It is a device for adjusting hot water pressure and water pressure by attaching it to a hot and cold water mixing faucet, installed on the high pressure side of the water supply pipe side or the hot water supply pipe side, and adjusting the pressure on the high pressure side to the pressure on the low pressure side, A pressure adjusting unit for adjusting the hot water pressure and the water pressure almost equally, and a flexible connecting pipe that connects the low pressure side of the pressure adjusting unit and the hot water supply pipe or the water supply pipe and transmits the low pressure side pressure to the pressure adjusting unit. A hot-water pressure regulator characterized by comprising: 2. The hot water pressure regulating apparatus according to claim 1, wherein two flexible connecting pipes are provided, and an opening on a low pressure side of the two connecting pipes on the hot water supply pipe side or the water supply pipe side is a hot water supply pipe. Or the hot-water pressure regulator characterized by arrange | positioning in a column along the flow of water. 2. The hot and cold water regulating device according to claim 1, wherein two flexible connecting pipes are provided, and one of the hot water pipes or the water supply pipes is opened against the flow of hot water or water on the low pressure side. The other one is opened on the wall surface of the hot water supply pipe or the water supply pipe, or is opened toward the downstream direction of the hot water or water.