TWI635232B - Pressure balance valve - Google Patents

Abstract

The present invention provides a pressure balanced air valve for mounting in a drain pipe assembly, comprising an upper casing, a body and a gasket. The main body includes a central pipe section and a ring wall portion. The two ends of the central pipe section respectively form a connecting end and a venting end, and the connecting end is provided for connecting with the drain pipe group; the ring wall connecting ring is disposed on the outer wall surface of the central pipe section, and A flow channel is formed after the connection with the central pipe section, and a plurality of suction holes are formed in the bottom of the flow channel, wherein the upper casing is provided to cover the ring wall portion to form a first-class ventilation chamber; the gasket is provided to cover the circulation groove. The upper edge blocks the flow venting chamber from contacting the external environment; wherein the upper edge of the venting end of the central pipe section has different height differences. Thereby, the drain pipe group is used to generate a negative pressure due to the water flow, so that the outside air is introduced; when the positive pressure is applied, the gas is prevented from escaping to the outside, and the environmental sanitation of the drain pipe group is effectively improved.

Description

Pressure balance valve

The invention relates to the field of sanitary environment components for lifting water pipes, in particular to a pressure balance valve which can be installed on a water pipe assembly to reduce the effect of water seal due to siphoning, evaporation, or capillary phenomenon.

Press, modern bathroom or sink facilities, there is a corresponding set of drains to export water to the outside. However, after a long period of use, the inside of the water pipe often produces dirt or bacteria, which causes problems such as odor return. In view of this, the prior art has a structure in which a bent pipe is used to store a part of the flow after the flow is sealed at the bent pipe, thereby forming a water seal phenomenon. In this way, the water seal can effectively block the direct contact with the external environment through the water seal before the next water flow, thereby avoiding the phenomenon of odor return. However, unfortunately, the water seal system often causes a negative pressure siphon or a positive pressure spray due to the water flow of the drain pipe, thereby causing the lack of a water trap. Therefore, the drainage designer must have countermeasures and adopt an appropriate ventilation system to reduce the occurrence of this phenomenon and effectively improve the overall environmental health and health.

In view of this, the inventor feels that his current testing practice is not perfect, and his mental and painstaking research, and based on his accumulated experience in the industry for many years, provides a pressure balanced valve that can be attached to the drain pipe group, with a view to Improve the lack of the above-mentioned prior art.

In view of the above problems, an object of the present invention is to provide an improved drainage pipe set The pressure balance valve that causes the trap to break due to the water flow pressure.

In order to achieve the above object, the present invention provides a pressure balanced air valve for mounting on a drain pipe set, comprising: an upper casing; a body comprising: a central pipe section, the two ends of which form a connecting end and a a venting end, the connecting end is provided for connecting with the drain pipe group; and a ring wall portion is disposed on the outer wall surface of the central pipe section, and is connected with the central pipe section to form a circulation groove, and the circulation groove The bottom portion is provided with a plurality of suction holes; wherein the upper casing is configured to cover the ring wall portion to form a first-class ventilation chamber; and a gasket is provided for covering the upper edge of the flow channel to block the The flow venting chamber is in contact with the external environment; wherein the upper edge of the venting end of the central pipe section has different height difference. Thereby, when the pressure of the flow plenum is less than the external environment pressure, the gasket can move toward the venting end relative to the central pipe segment, and the displacement of the gasket increases from small to large, and the external environment flows into the flow venting chamber and The gas flow rate entering the central pipe section is reduced from large to small.

In a preferred embodiment, in order to further prevent mosquitoes or obstructions from flowing back, the pressure balance valve further includes: a venting plate disposed in the central pipe section and located between the connecting end and the venting end .

In another preferred embodiment, in order to enhance the effect of the spacer, the pressure balance valve may further include: a plurality of supporting ribs disposed in the flow channel for reinforcing the spacer.

In another preferred embodiment, in order to average the gas introduced into the external environment, the upper edge of the venting end of the central pipe section continues to form a sinusoidal, square wave or triangular wave state.

In another preferred embodiment, in order to prevent the negative pressure pad from being locked in the upper casing after being moved upward, the gasket may not fall or close to the flow channel after the negative pressure is completed, and then the shadow is formed. The subsequent pressure balance effect is sounded, wherein the upper casing is provided with a plurality of blocking ribs. Or the spacer is further disposed in an O-ring pattern, and a flange is disposed at an inner circumference and an outer circumference of the O-ring.

In another preferred embodiment, in order to effectively assemble the pressure balance valve to the drain pipe set, the pressure balance valve further includes: a pressing member, which is a flexible material, is disposed in the central pipe segment. The connection is internal.

In another preferred embodiment, in order to facilitate assembly, the pressure balance valve further includes: an extension portion which is spirally fixed to the connection end, and the extension portion is provided with a pressing member of a flexible material.

In an embodiment, the connection end of the pressure balance valve is hexagonal for ease of disassembly and assembly.

The pressure balance valve proposed by the invention can effectively solve the phenomenon that the water trap is broken due to the negative pressure caused by the water flow, thereby improving the environmental sanitation of the drainage system such as the whole bathroom or the sink, and avoiding odor return and mosquito breeding. Problems such as the spread of germs.

1‧‧‧Pressure balance valve

10‧‧‧Upper casing

101‧‧‧stop ribs

12‧‧‧Ontology

120‧‧‧Central section

1201‧‧‧Connected end

1202‧‧‧ Ventilation end

124‧‧‧ Ring Wall

1240‧‧‧Circulation slot

1241‧‧‧ suction holes

13‧‧‧Flow chamber

14‧‧‧shims

141‧‧‧Flange

15‧‧‧vent plate

16‧‧‧Support ribs

17‧‧‧ 紧

18‧‧‧Extension

2‧‧‧Drainage pipe group

Fig. 1A is an exploded perspective view (1) of a preferred embodiment of the present invention.

Figure 1B is a perspective exploded view of the preferred embodiment of the present invention (2).

2A is a schematic view (1) of an application of the preferred embodiment of the present invention.

Figure 2B is a schematic view (2) of the application of the preferred embodiment of the present invention.

Figure 2C is a schematic view of the application of the preferred embodiment of the present invention (3).

Figure 3 is a perspective exploded view of another embodiment of the preferred embodiment of the present invention.

Figure 4 is a schematic view of the body of the second embodiment of the preferred embodiment of the present invention.

In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description for matching drawings.

Please refer to FIGS. 1 and 2A-2B, which are perspective exploded views of the preferred embodiment of the present invention and schematic diagrams of respective applications. The present invention discloses a pressure balanced gas valve 1 for mounting on a drain pipe set 2, which includes an upper casing 10, a body 12 and a gasket 14. The main body 12 includes a central pipe section 120 and a ring wall portion 124. The two ends of the central pipe section 120 respectively form a connecting end 1201 and a venting end 1202. The connecting end 1201 is connected to the drain pipe set 2. The ring wall portion 124 is connected to the outer wall surface of the central pipe section 120, and is connected with the central pipe section 120 to form a flow channel 1240. The bottom of the flow channel 1240 is provided with a plurality of air suction holes 1241, wherein the upper casing The 10 series is provided to cover the ring wall portion 124 to form the first-class ventilation chamber 13. The spacer 14 is configured to cover the upper edge of the flow channel 1240 to block the flow venting chamber 13 from contacting the external environment. The upper edge of the venting end 1202 of the central pipe section 120 has different height difference. When the pressure of the gas chamber 13 is lower than the external environment pressure, the gasket 14 can be moved toward the venting end 1202 relative to the central pipe section 120, and the external environment flows into the flow venting during the displacement of the gasket 14 from small to large. The gas flow rate of the chamber 13 and entering the central pipe section 120 is reduced from large to small. Since the upper edge of the venting end 1202 has a different height difference, when the shims 14 move toward the venting end 1202 and the displacement thereof changes from small to small, the external environment flows into the venting chamber 13 The gas flow rate entering the central pipe section 120 is greatly reduced due to the change of the flow area, so as to exert a more stable pressure balance effect. Therefore, the pressure balance valve 1 can be used to introduce outside air when the drain pipe group 2 generates a negative pressure due to the flow of water, and when the drain pipe group 2 generates a positive pressure, The gas is prevented from escaping to the outside, and the environmental sanitation of the drain pipe group 2 is effectively improved.

Preferably, the pressure balance valve 1 further includes a venting plate 15 disposed in the central pipe section 120 and between the connecting end 1201 and the venting end 1202. Thereby, it is possible to prevent mosquitoes or dirt from entering the central pipe section 120, resulting in a clogging situation, and effectively maintaining the function of the pressure balance gas valve 1. In addition, the pressure balance valve 1 may further include a plurality of supporting ribs 16 disposed in the flow channel 1240 for reinforcing the spacers 14 , wherein the supporting ribs 16 are It can be set at equal intervals to achieve uniform load bearing. In this embodiment, the upper edge of the venting end 1202 of the central pipe section 120 is continued to form a square wave state as an example, so that the gas introduced by the external environment is uniformly guided to provide better airflow guiding performance.

In order to prevent the spacer 14 from being moved in the direction of the ventilating end 1202 under the negative pressure state, the card is abutted against the inside of the upper casing 10 at the end of the drainage, so A plurality of blocking ribs 101 are disposed inside the upper casing 10 to reduce the contact area between the gasket 14 and the inner surface of the upper casing 10. In addition, the spacer 14 is further configured to have an O-ring shape, and a flange 141 is disposed on the inner circumference and the outer circumference of the O-ring to further reduce the spacer 14 and the upper shell. The contact area of the body 10 enhances the support efficiency. Thereby, when the negative pressure state of the drain pipe group 2 disappears when the drainage is completed, the gasket 14 can be prevented from being stuck to the upper casing by the action of the stopper ribs 101 and the flange 141. Within 10, the gravity is accurately reset into the flow channel 1240.

In addition, in order to make the pressure balance valve 1 be effectively assembled to the drain pipe set 2, in the embodiment, the pressure balance gas valve 1 further includes a pressing member 17, and the pressing member 17 is made of a flexible material. And disposed inside the connecting end 1201 of the central pipe section 120, thereby enhancing the assembly density of the pressure balance valve 1 and the drain pipe set 2, so as to better balance the drainage time. The pressure is also easy to install to the drain pipe set 2. Further, preferably, the connecting end 1201 may be hexagonal to facilitate removal or installation from the drain pipe set 2 to the drain pipe set 2.

In the application, the pressure balance valve 1 is installed at the drain pipe group 2, and the pressing member 17 is disposed inside the connecting end 1201, wherein the drain pipe group 2 can be connected to the building. Water pipes for each bathroom or sink. When the drainage system operates to cause water to flow, resulting in a negative pressure state inside the drain pipe group 2, since the pressure balance gas valve 1 is in communication with the drain pipe group 2, a negative pressure is also formed, so the external air flow is from the suction. The air hole 1241 enters the flow plenum 13 at which time the shims 14 are pushed against the airflow into the venting chamber 13 and move toward the venting end 1202 relative to the central pipe section 120, as shown in FIG. 2A. The shims 14 are then moved toward the venting end 1202 as shown in FIG. 2B. During the movement of the gasket 14, the flow rate of the external environment flowing from the suction hole 1241 into the flow plenum 13 and into the central pipe section 120 is affected by the height difference structure of the ventilating end 1202, and is greatly changed. Small change, in other words, when the spacer 14 is in the state of FIG. 2A, the flow rate of the ambient gas flowing into the flow plenum 13 and entering the outer portion of the central pipe section 120 is greater than when the gasket 14 is in the state of FIG. 2B. . When the draining is completed, the inside of the drain pipe group 2 returns to the normal pressure. At this time, the gasket 14 is reset by gravity to the flow channel 1240, as shown in FIG. 2C, and blocks the suction holes 1241. The latching state is formed, and by the structure of the flange 141 of the spacer rib 101 and the spacer 14, the spacer 14 can be prevented from being caught in the upper casing 10. Thereby, the water seal in the drain pipe group 2 can be effectively prevented from being affected by the siphon, evaporation or capillary phenomenon, thereby causing the sealing effect of the odor backflow, and at the same time preventing the stench in the drain pipe group 2 Gas spills.

Please refer to FIG. 3, which is another embodiment of the preferred embodiment of the present invention. Stereoscopic exploded view. In this embodiment, the upper edge of the venting end 1202 of the central pipe section 120 continues to form a sinusoidal state to guide the airflow. The pressure balance valve 1 further includes an extension portion 18 which is spirally fixed to the connection end 1201, and the extension portion 18 is provided with a pressing member 17 of a flexible material, thereby facilitating the group. The effect of the pressure balance valve 1 is set. For the application of the pressure balance valve 1 , please refer to the 2A~2C drawings.

Please refer to FIG. 4, which is a perspective exploded view of a second embodiment of the preferred embodiment of the present invention. In this embodiment, the upper edge of the venting end 1202 of the central pipe section 120 continues to form a triangular wave, thereby facilitating the introduction of airflow from the external environment.

In summary, the pressure balance valve 1 of the present invention can effectively balance the pressure of the drain pipe group 2, so as to prevent the water pressure from being broken due to the pressure change of the water flow, and the odor is returned to the sanitary ware. Equipment, as well as mosquito breeding and other issues, to effectively improve the health and health of the home environment. In order to improve the airflow guiding effect, the upper edge of the venting end 1202 is a structural aspect having a height difference, so that during the displacement of the spacer 14, the external environment flows into the flow venting chamber 13 and enters the central pipe section. The gas flow rate of 120 can be reduced from large to small to exert a more stable pressure balance effect.

However, the above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention; therefore, equivalent changes and modifications may be made without departing from the spirit and scope of the invention. Within the scope of the patent of the present invention.

Claims (11)

A pressure balance air valve is provided for being installed in a drain pipe group, comprising: an upper casing; a body comprising: a central pipe section, wherein the two ends respectively form a connecting end and a venting end, wherein the connecting end is provided for And a ring wall portion, the connecting ring is disposed on the outer wall surface of the central pipe section, and is connected with the central pipe section to form a circulation groove, and the bottom of the circulation groove is provided with a plurality of suctions a hole; wherein the upper casing is provided to cover the ring wall portion to form a first-class ventilation chamber; and a gasket is provided to cover the upper edge of the flow channel to block the flow ventilation chamber from contacting the external environment; Wherein the upper edge of the venting end of the central pipe section has different height difference. The pressure balance valve of claim 1, further comprising: a venting plate disposed in the central pipe section and located between the connecting end and the venting end. The pressure balance air valve of claim 2, further comprising: a plurality of supporting ribs disposed in the flow channel for reinforcing the spacer. The pressure balanced gas valve of claim 3, wherein the upper edge of the venting end of the central pipe section continues to form a sinusoidal state. The pressure balanced gas valve of claim 3, wherein the upper edge of the venting end of the central pipe section continues to form a square wave pattern. The pressure balanced gas valve of claim 3, wherein the upper edge of the venting end of the central pipe section continues to form a triangular wave state. A pressure balanced gas valve according to any one of claims 1 to 6, wherein A plurality of blocking ribs are disposed inside the upper casing. The pressure balanced gas valve according to claim 7, wherein the gasket is in the form of an O-ring, and a flange is disposed at an inner circumference and an outer circumference of the O-ring. The pressure balance air valve of claim 8, further comprising: a pressing member, which is a flexible material, disposed inside the connecting end of the central pipe section. The pressure balance air valve of claim 8, further comprising: an extension section, which is spirally fixed to the connection end, and the extension section is provided with a pressing member of a flexible material. The pressure balanced gas valve according to claim 1, wherein the connecting end is hexagonal.