KR200165958Y1 - A Cold Water And Hot Water Discharge Device With A Pressure Balance Valve Being Received In There - Google Patents

Abstract

The present invention relates to a cold and hot water discharge device, by replacing the conventional cold and hot water supply / discharge member with a pressure control valve cartridge with a built-in pressure control valve, the water pressure of the cold water and hot water flowing into the cold and hot water discharge device through the cold and hot water supply pipe is changed Even in this case, the ratio of the inflow of cold water and hot water is automatically controlled by the pressure control valve regardless of the change of the external environment so that the temperature of the mixed water discharged from the cold / hot water discharge device to the outside is always kept the same as the initial temperature. . Thereby, the change of the water temperature of the mixed water which had been a problem at the time of showering can be prevented, and it can have comfort.

Description

A Cold Water And Hot Water Discharge Device With A Pressure Balance Valve Being Received In There}

The present invention relates to a cold and hot water discharge device, and in particular, the temperature of the cold and hot water discharged to the outside at any time by controlling the instantaneous ratio of the amount of cold water and hot water flowing through the cold and hot water supply pipe at all times in spite of sudden changes in the cold and hot water pressure It relates to a cold and hot water discharge device with a built-in pressure control valve that can be maintained.

In general, the cold and hot water discharge device is used in the water supply installed in the sinks and tubs, such as homes or bathrooms, used for water supply, and the water supply amount and water temperature are controlled by the single lever. That is, the supply amount of water is controlled by the up and down operation of the lever, and the water temperature is adjusted together with the adjustment of the supply amount of cold water and hot water by left and right rotation.

The structure of a conventional cold and hot water discharging device used for this purpose is disclosed in patent 187398 registered by the present applicant. As shown in FIG. 1, the cold / hot water discharging device has a cylindrical portion 121 which accommodates a shanghai-dong in the a and b directions and a left-right rotatable lever 123 in the c and d directions with respect to the fixing pin 124. ) And the flat plate portion 122 integrally located in the housing 110, the lever member 120 rotatably positioned, the lower end of the lever 123 is inserted and fixed the opening 131 and the flat plate portion 122 Consists of the convex portion 132 is inserted into the recess formed on the bottom of the movement of the lever member 120 while reciprocating in the forming direction of the convex portion 132 when the lever 123 is moved around the fixed pin 124 It is coupled to the transmission member 130 and the transmission member 130, and the reciprocating movement in the AB direction and the left and right rotation in the CD direction with the transmission member 130, while having a predetermined depth formed in the center of the lower surface Control member 140 for controlling the supply and water temperature of the water by controlling the opening and closing of cold and hot water through the recess 141 and Three openings 151, 152, and 153 are attached to the lower surface of the control member 140 and selectively correspond to the recessed portions 141 formed in the control member for controlling supply and cooling of cold and hot water. In order to reduce the frictional resistance generated during the left and right rotation and reciprocating motion of the control member 140, the lubricant leakage prevention piece 190 is attached to the outer circumference to prevent the leakage of lubricant such as silicone grease applied to the base surface The base member 150 seated on the lower surface of the control member 140, the hot water inlet 163 into which hot water is introduced, the cold water inlet 162 into which cold water is introduced, and a discharge port 161 for discharging cold and hot water to the outside. It is composed of a cold and hot water supply / discharge member 160 is formed, and a housing 110 that accommodates each member, and is fixed to the cold and hot water supply / discharge member 160.

However, the cold and hot water discharging device having the above-described structure is uncomfortable when the bather washes or showers with the initial setting of cold water and hot water as a single lever of the faucet while washing or showering, and the bather suddenly becomes hot or cold. Immediately, there was an inconvenience of having to adjust the water temperature again using a single lever. This phenomenon is caused by the sudden increase or decrease of the water pressure of the cold or hot water introduced through the cold / hot water supply / discharge member due to the external environment, that is, the change in the water pressure, and thus the change in the inflow of cold / hot water. This is because the water temperature of the hot and cold water generated as a result is different from the initially set water temperature.

Therefore, the present invention was devised to solve the above-described problems, even if the pressure of the cold or hot water flowing into the cold and hot water discharge device is suddenly changed, the temperature of the cold and hot water discharged by adjusting the ratio of the inflow of cold and hot water is always constant. The purpose of the present invention is to provide a cold and hot water discharge device capable of maintaining the same as the single-lever at all times the water temperature initially set.

1 is a conventional cold and hot water discharge device

Figure 2a shows a pressure regulating valve cartridge according to the present invention, an exploded perspective view of the upper plate and the lower plate is installed pressure regulator valve, Figure 2b is a bottom perspective view of the upper plate, Figure 2c is a bottom perspective view of the lower plate

3 is an exploded perspective view showing a state in which the cylinder and the piston constituting the pressure control valve in FIG.

Figure 4a is a front view of the cylinder of the pressure regulating valve, Figure 4b is a front view of the piston of the pressure regulating valve

5 is a plan view of the pressure regulating valve cartridge

6A-C are cross-sectional views taken along the line I-I in FIG. 5, showing the positional relationship of the pistons in the cylinder, respectively;

7 is a view for explaining the operation principle of the pressure regulating valve

8 is a block diagram of an apparatus for testing an embodiment to which the present invention is applied.

In order to achieve the above object, the present invention provides a pressure control valve cartridge with a built-in pressure control valve made of a cylinder and a piston to automatically adjust the flow of cold and hot water according to the change in water pressure instead of the conventional cold and hot water supply / discharge member It is characterized by using.

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

The overall configuration of the present invention is the same as the cold and hot water discharge device shown in Figure 1 except for using the pressure control valve cartridge in place of the hot and cold water supply / discharge member, and the duplicated description is omitted.

Figure 2a shows an exploded perspective view of the pressure regulating valve cartridge according to the present invention, the pressure regulating valve cartridge is the first cold water inlet 31 and the cold water and hot water flows through the cold and hot water supply pipe (not shown), respectively; Pressure regulating valve 40 at the position where the first hot water inlet 32, the first outlet 33 for discharging cold and hot water to the outside, and the first cold water inlet 31 and the first hot water inlet 32 are formed. Lower plate 30 composed of a receiving groove 34 of a predetermined depth to receive the lower end of the lower plate, and the first cold water inlet 31, the first hot water inlet 32 and the first outlet of the lower plate 30 The second cold water inlet 51, the second hot water inlet 52, and the second outlet 53 are formed at portions corresponding to the formation positions of the 33, respectively. And a top plate 50 having a plurality of coupling parts 56, 57, 58 coupled to the housing 110. Here, the coupling portion 56 is fastened to the plurality of cutouts 154 formed at the side edge of the base member 150, the coupling portion 57 is formed in the rectangular opening 111 formed at the bottom of the housing 110 Is inserted into, the coupling portion 58 is to be fastened to the incision 112 formed in the lower end of the housing (110).

The coupling of the upper plate 50 and the lower plate 30 is a projection 55 formed on the outer periphery of the bottom surface of the upper plate as shown in Figure 2b in the insertion hole 36 formed in the corresponding portion of the lower plate 30 It is made by fastening a screw to each of the screw holes 37 and 59 after being inserted, and the sealing member 35 shown by hatching is sealed between the upper plate 50 and the lower plate 30 so that a watertight effect is achieved. Can be achieved.

On the other hand, referring to Figure 2b, the second housing for accommodating the upper end of the pressure control valve 40 in the portion corresponding to the first receiving groove 34 formed in the lower plate 30 on the bottom surface of the upper plate 50 The groove 54 is formed.

Now, the pressure control valve 40 as the main component of the present invention will be described in detail with reference to FIGS. 3 and 4.

3 is a perspective view illustrating a state in which the pressure regulating valve 40 is disassembled and received in the receiving groove 34 of the lower plate 30.

As shown in the figure, the pressure control valve 40 is composed of a cylinder 41 and a piston 42, the piston 42 is housed in the cylinder 41 serves to move the left and right reciprocating. The horizontal dimension d ₂ of the piston 42 is designed to be slightly longer than the horizontal dimension d ₁ of the cylinder 41 (see FIG. 6). A locking jaw 38 is formed on the left and right sides of the receiving groove 34 of the lower plate 30 so that the locking jaw 38 when the piston 42 of the pressure regulating valve 40 moves left and right in the cylinder 41. The end of the piston is caught and stops moving further. This will be described later in more detail with reference to FIG. 6.

First, the structure of the cylinder 41 will be described. The cylinder 41 has a hollow shape for accommodating the piston 42, and the cylinder center portion 41a and the first and second cylinder ends 41b. As shown in Fig. 4, a plurality of openings 41d for inflow of cold and hot water are formed between the portions 41c. The width of the center portion 41a is wider than the widths of the first and second cylinder ends 41b and 41c, and the center portion 41a is recessed in the center portion 41a ₁ and the center portion of which the left and right portions protrude. The recessed portion 41a ₂ , and when the cylinder 41 is accommodated in the receiving grooves 34 and 54 of the lower plate 30 and the upper plate 50, the recessed portions 41a ₂ are each receiving groove 34. It extends over the projections 34a and 34b formed at the central portion of the c) 54 so that the convex portion 41a ₁ is not flown, and the recess 41a ₂ is sealed as shown in FIG. The member 35 is fitted. Reference numeral 34c denotes a recess in which the sealing member 35 is accommodated when the cylinder 41 is mounted on the lower plate 30 while the sealing member 35 is fitted to the recess 41a ₂ . Similarly to the structure of the cylinder center portion 41a, the first and second cylinder ends 41b and 41c are formed with convex portions 41b ₁ , 41c ₁ and recesses 41b ₂ and 41c ₂ , respectively. The O-ring is fitted into the recesses 41b ₂ and 41c ₂ .

The piston 42 accommodated in the cylinder 41 having such a structure has an outer diameter slightly smaller than the inner diameter of the cylinder, and as shown in Fig. 4, the first and second piston ends 42b and 42c and the piston are shown. Similarly to the structure of the cylinder 41, a plurality of openings 42d for cold and hot water inflow are formed between the central portions 42a, and a partition wall is sealed on the inner surface of the piston central portion 42a to block the flow of fluid. The part 42e is formed. In addition, the piston center portion 42a has a structure similar to that of the cylinder center portion 41a, and is formed of a convex portion 42a ₁ having protruding left and right portions, and a recessed portion 42a ₂ having a central portion recessed therein. The widths of the first and second piston end portions 42b and 42c are formed in the cold and hot water inlets 31 and 32 formed in the opening 41d of the cylinder 41 and the receiving groove 34 of the lower plate 30. In order to be able to open and close, the width | variety of the opening 41d of the cylinder 41, and the width | variety of the cold and hot water inflow openings 31 and 32 is set slightly wider.

FIG. 6 is a cross-sectional view taken along the line I-I of FIG. 5, showing the positional relationship of the piston 42 in the cylinder 41 when the pressure regulating valve having the above structure is accommodated in the receiving groove 34 of the lower plate 30. FIG. It is a figure for demonstrating the structure which followed.

Fig. 6A shows the structure when the piston 42 is in the center position in the cylinder 41. Figs. 6B and 6C show the piston 42 moving left and right in the cylinder 41, respectively. The structure of the is shown.

In FIG. 6A, a portion of the end portions 42b and 42c of the piston 42 seals the opening 41d of the cylinder 41 and the portion of the cold / hot water inlet 31 and 32 of the lower plate 30, The rest is in open position.

On the other hand, in Figs. 6B and 6C, when the piston 42 is moved to the left or the right, the cold water inlet 31 or the hot water inlet 32 is completely formed by the end 42b or 42c of the piston 42. In this case, the end portion 42b or 42c of the piston 42 is formed in the recess 38 formed in the receiving groove 34 of the lower plate 30 when the position d ₃ is reached from the end in the cylinder 41. ) Will no longer be moved.

Fig. 7 is a principle diagram for explaining the operation principle of the pressure regulating valve according to the positional relationship of the piston 42 in Figs. 6A-C. The piston 42 in the state in which the pressure regulating valve is accommodated in the pressure regulating valve cartridge is shown in Figs. ), And the flow direction of the fluid, the cylinder 41 of the pressure control valve 40 is omitted for simplicity of the drawings.

Figure 7a shows the operating state of the piston when the cold water and hot water pressure flowing through the cold and hot water supply pipe is the same, Figure 7b and Figure 7c shows the action of the piston when the cold and hot water pressure is different. It is. Reference numeral 70 denotes a cold / hot water mixing region, and 71 denotes a fluid passage.

First, in FIG. 7A, the cold water and hot water flowing into the cold / hot water inlet 31 and 32 through the cold / hot water supply pipe are initially set to an appropriate water temperature by using a single lever, and then the difference in the water pressure of the cold / hot water. In the absence of, the piston 42 is equilibrated at the exact center position in the cylinder by the hydraulic equilibrium holding action.

However, when the hot water pressure suddenly decreases due to the external environment during the inflow of cold and hot water in the state of FIG. 7A, the cold water pressure becomes relatively large, and thus the equilibrium between the cold water pressure and the hot water pressure is broken. The large cold water is strongly injected toward the partition 42e where the water is sealed, and the piston 42 in the cylinder is pushed to the right (arrow direction) as shown in Fig. 7B. At this time, when the piston 42 is moved to the right, the cold water inlet 31 is sealed by the first piston end 42b of the piston 42, while the hot water inlet 32 is opened while Since the piston stops at the same pressure point (equilibrium point), the ratio of the inflow of cold water and the inflow of hot water is constant, resulting in the water temperature of the mixed water discharged to the outside through the outlet 33 to be initially set. Stays constant.

On the contrary, in the case where the cold water pressure suddenly decreases, hot water having a relatively high pressure is strongly injected to the partition 42e side as opposed to the moving direction of the piston 42 in FIG. 7B, and the arrow as shown in FIG. The piston 42 is pushed to the left side in the cylinder in the direction so that the second piston end 42c seals the hot water inlet 32 while the inflow of hot water is reduced to maintain the initial set water temperature.

The present invention having such a principle of operation will be described in detail by the following experimental example.

Experimental Example

Figure 8 shows an example of an experimental apparatus for testing the water temperature maintenance effect when using the pressure control valve according to the present invention.

For this experiment, the conventional hot and cold water discharging device A and the cold and hot water discharging device B equipped with the pressure regulating valve cartridge according to the present invention are installed in the same pipe, so that the hot water pressure and the cold water pressure flowing into each cold and hot water discharging device are the same. Set to. At this time, in order to check whether the water pressure flowing into each cold and hot water discharge device is the same, each of the hydraulic pressure gauges 82 and 83 is installed in the cold and hot water supply pipes on the cold and hot water discharge devices A and B. Reference numeral 80 denotes a cold water tank and 81 denotes a hot water tank.

First, while supplying cold water at 15 ° C. with a water pressure of 3 bar and supplying hot water at 60 ° C. with a water pressure of 3 bar, the water temperature and the total flow rate of the mixed water discharged from the cold and hot water discharge devices A and B were measured. The water temperature was 38 ° C. and the discharge amount was 14 l / min.

Next, when the water pressures of both cold and hot water were lowered from 3 bar to 1.5 bar, the total discharge amount decreased to 7 L / min, but the temperature of the mixed water did not change to 38 ° C.

However, when the hot water pressure was maintained at 3 bar and the cold water pressure was lowered to 1.5 bar, the total discharge amount of the mixed water was reduced to 10.5 L / min, and the water temperature of the mixed water discharged from the conventional cold and hot water discharge device A increased to 45 ° C. On the other hand, the water temperature of the mixed water discharged from the cold and hot water discharge device B of the present invention did not change to 38 ℃.

On the contrary, when the cold water pressure was maintained at 3 bar and only the hot water pressure was reduced to 1.5 bar, the total discharge amount of the mixed water decreased to 10.5 L / min, and the water temperature of the mixed water discharged from the conventional cold / hot water discharge device A was 33 ° C. On the other hand, the water temperature of the mixed water discharged from the cold / hot water discharge device B in this paper was not changed to 38 ° C.

The results are briefly shown in Table 1.

Condition Total discharge Water temperature Without pressure balance valve Pressure Balance Valve Installation Initial situation Cold water: 3 bar water pressure, 15 ° C water temperature Hot water: 3 bar water pressure, 60 ° C water temperature 14ℓ / min 38 ℃ 38 ℃ Situation 1 Cold water: Water pressure 1.5bar, water temperature 15 ° C Hot water: Water pressure 1.5bar, water temperature 60 ° C 7 ℓ / min 38 ℃ 38 ℃ Situation 2 Cold water: Water pressure 1.5bar, water temperature 15 ° C Hot water: Water pressure 3bar, water temperature 60 ° C 10.5ℓ / min 45 ℃ 38 ℃ Situation 3 Cold water: water pressure 3 bar, water temperature 15 ° C hot water: water pressure 1.5 bar, water temperature 60 ° C 10.5ℓ / min 33 ℃ 38 ℃

As can be seen from the above results, the conventional cold and hot water discharging device changes the temperature of the mixed water discharged to the outside because the inflow of cold or hot water flowing into the cold and hot water discharging device changes when the supplied water pressure changes. However, when using the pressure control valve cartridge according to the present invention, regardless of the change in water pressure ratio of the amount of cold water and hot water flowing into the cold and hot water discharge device is always constant, it can be seen that the mixed water discharged always maintain the same water temperature .

As described above, when the pressure regulating valve cartridge is used instead of the conventional cold / hot water supply / discharge device, the initial set water temperature is always kept constant regardless of the change in the external environment.

Therefore, if the bather takes a shower and sets the proper water temperature once by the single lever of the faucet, the user can continue to shower at the initial water temperature without feeling the temperature suddenly get hot or cold during the shower. I can have it.

In addition, according to the present invention, even if the pressure of any one of the cold and hot water pressure is lowered, the discharge amount of the higher pressure, such as the discharge amount of the lower side is automatically reduced, there is an effect that water saving.

Claims (7)

A housing 110, a lever member 120 rotatably positioned within the housing 110, a transmission member 130 coupled to the lever member 120 to transfer the movement of the lever member 120, and a transmission. The control member 140 is coupled to the member 130 to control the supply amount and the temperature of the cold and hot water, the base member 150 coupled to the control member 140 and the lubricant is applied to the surface, and the cold and hot water inlet 162 ( In the cold and hot water discharge device consisting of a cold and hot water supply / discharge member 160 is formed with a 163 and a discharge port 161 for discharging the cold and hot water to the outside, As the cold / hot water supply / discharge member 160, a pressure regulating valve cartridge having a built-in pressure regulating valve 40 composed of a cylinder 41 and a piston 42 capable of reciprocating left and right within the cylinder 41 is used. The pressure regulating valve cartridge is provided with a receiving groove 34 in which the pressure regulating valve 40 is accommodated, and when the piston 42 of the pressure regulating valve 40 moves left and right in the cylinder 41. In order to prevent further progress when the predetermined position (d ₃ ) is reached, the engaging jaw 38 formed on the left and right sides of the receiving groove 34 and the receiving groove 34 are respectively formed to introduce cold water and hot water. Lower plate 30 consisting of the first cold water inlet 31 and the first hot water inlet 32, and the first outlet 33 for discharging cold and hot water to the outside, and A second cold water inlet 51 formed at a portion corresponding to a formation position of the first cold water inlet 31, the first hot water inlet 32, and the first outlet 33 of the lower plate 30, It is composed of a second hot water inlet 52 and the second outlet 53 and a plurality of engaging portions 56, 57, 58 are coupled to the base member 150 and the housing 110 on the outer periphery of the upper surface Consists of the upper plate 50 is formed, The lower surface of the upper plate 50 is formed with a groove 54 of the same size as the storage groove 34 formed on the upper surface of the lower plate 30, the upper end of the pressure control valve 40 accommodated in the storage groove 34 Cold and hot water discharge device, characterized in that to accommodate. The cold and hot water dispensing apparatus according to claim 1, wherein the dimension d ₂ in the lateral direction of the piston (42) is longer than the dimension d _{1 in} the lateral direction of the cylinder (41). 2. The cylinder 41 is composed of a cylinder center portion 41a and first and second cylinder end portions 41b and 41c, and the cylinder center portion 41a and the first and second portions are formed. A plurality of openings 41d for cold and hot water inflow are formed between the cylinder end portions 41b and 41c, and the central portion 41a is recessed with a convex portion 41a _{1 in} which left and right portions protrude from each other. the main portion and is in (41a _2), said first and second cylinder ends (41b) (41c) also each convex portion (41b ₁₎ (41c ₁₎ and the main portion (41b ₂₎ (41c ₂₎ is formed in main portion (41b ₂ ) A cold and hot water discharging device, characterized in that the O ring is fitted into (41c ₂ ). 2. The piston (42) according to claim 1, wherein the piston (42) is composed of a piston central portion (42a) and first and second piston end portions (42b) (42c), and the piston central portion (42a) and the first and second pistons. A plurality of openings 42d for cold and hot water inflow are formed between the ends 42b and 42c, and the partition 42e, which is sealed to block the flow of fluid, is formed on the inner surface of the piston central portion 42a. And the piston central portion (42a) is formed of a convex portion (42a ₁ ) protruding from the left and right portions thereof, respectively, and a recessed portion (42 ₂ ) in which the central portion is recessed. 5. The cold and hot water inlet formed in the opening 41d of the cylinder 41 and the receiving groove 34 of the lower plate 30 of the first and second piston ends 42b and 42c. 31) A hot and cold water discharging apparatus characterized by being wider than the width of the opening (41d) of the cylinder (41) and the width of the cold / hot water inlet (31) (32) to open and close the (32). The partition wall according to claim 1 or 4, wherein the piston 42 is formed on the inner surface of the piston 42 when the hot water pressure suddenly decreases during the inflow of cold and hot water through the cold water inlet 31 and the hot water inlet 32. Cold and hot water discharge device, characterized in that moved to the hot water inlet 32 by the injection force of cold water injected to the portion (42e). The partition wall according to claim 1 or 4, wherein the piston 42 is formed on the inner surface of the piston 42 when the cold water pressure suddenly decreases during the inflow of cold and hot water through the cold water inlet 31 and the hot water inlet 32. Cold and hot water discharge device, characterized in that moved to the cold water inlet 31 by the injection force of hot water injected to the portion (42e).