JP5679845B2 - Toilet equipment with water supply device and water supply device - Google Patents

Description

  The present invention relates to a water supply device and a toilet equipment device including the water supply device.

  Patent document 1 is disclosing the conventional water supply apparatus. This water supply device supplies cleaning water to a cleaning nozzle of a local cleaning device incorporated in a flush toilet. This water supply apparatus includes a water supply channel communicating with a water pipe and a vacuum breaker communicated with the water supply channel. The vacuum breaker has an air intake, and a hose is connected to the air intake. This hose has a tip connected to an air intake provided on the flush toilet. The intake portion has a cylindrical connecting portion, and this connecting portion is inserted inward from the opening at the tip of the hose.

  In this water supply device, when the pressure inside the water supply channel upstream of the vacuum breaker becomes negative, air can be sucked from the air intake part provided in the flush toilet and air can be taken in from the air intake of the vacuum breaker via the hose. it can. For this reason, this water supply apparatus can prevent the backflow of sewage, without attracting | sucking the sewage of the downstream of a water supply channel.

Japanese Patent Laid-Open No. 9-60092

  However, in the water supply apparatus of Patent Document 1, the flow rate of air that can be taken in from the air intake port of the vacuum breaker affects the size of the flow path area in the hose and the connecting portion. In this water supply apparatus, since the connecting portion is inserted inward from the opening at the tip of the hose, the inner diameter of the connecting portion is generally smaller than the inner diameter of the hose. That is, the flow area of the connecting portion is smaller than the flow area of the hose. For this reason, in this water supply apparatus, the flow rate of air that can be taken in from the air intake port of the vacuum breaker is determined by the size of the flow path area of the connecting portion.

  In order to prevent the backflow of sewage caused by the negative pressure in the upstream water supply channel, it is necessary that a sufficient flow rate of air is taken in from the air intake port of the vacuum breaker provided in the water supply channel. For this reason, in the water supply apparatus of patent document 1, it is necessary to increase the flow volume of the air which can flow through a connection part. For this purpose, it is desirable to increase the inner diameter of the connecting portion (increase the flow passage area of the connecting portion). However, if the inner diameter of the connecting portion is increased, the outer diameter of the connecting portion also increases, and accordingly the hose There is a risk that the hose may be difficult to handle and the water supply device may become large, such as an increase in outer diameter. Moreover, since it is necessary to arrange | position a hose in a limited space of a water supply apparatus, or to provide a connection part, it is difficult to enlarge and accommodate these. For this reason, if the negative pressure in the water supply channel upstream of the vacuum breaker is abrupt and strong, the water supply device has insufficient flow rate of air taken in from the air intake port of the vacuum breaker, and the downstream of the water supply channel. The sewage on the side may be sucked and the sewage may flow backward.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the water supply apparatus which can prevent the backflow of the sewage in a water supply channel reliably.

The water supply apparatus of the present invention includes a water supply channel communicating with a water pipe,
A vacuum breaker communicating with this water supply channel and having an air intake;
A hose connected to this air intake,
A water supply device comprising an intake portion for sucking air supplied to the air intake through the hose,
The intake portion includes a through hole that is inserted inward from the opening at the tip of the hose and penetrates in the insertion direction, and a notch portion that communicates with the through hole and extends in the insertion direction, and extends in a protruding state. It has the 1st connection part.

  In this water supply device, the first connecting portion includes a through-hole penetrating in the insertion direction to be inserted inward from the opening at the tip of the hose, and a notch portion communicating with the through-hole and extending in the insertion direction. . For this reason, in the part which inserted the 1st connection part into the inner side from opening of the front-end | tip of a hose, not only the through-hole of a 1st connection part but air can flow in into a hose. That is, by providing a notch in the first connecting portion, the flow area of the portion where the first connecting portion is inserted inward from the opening at the tip of the hose is increased, so the flow rate of air that can flow through this portion is increased. be able to. For this reason, when the inside of the water supply channel on the upstream side of the vacuum breaker becomes negative pressure, sufficient air can be taken in from the air intake port of the vacuum breaker. For this reason, this water supply apparatus can suppress attracting | sucking the sewage of the downstream of a water supply path upstream, and can prevent the backflow of sewage reliably.

  Therefore, the water supply apparatus of the present invention can reliably prevent the backflow of sewage in the water supply channel.

  Moreover, this water supply apparatus has inserted the 1st connection part into the inner side from opening of the front-end | tip of a hose. For this reason, a hose and a 1st connection part can be firmly connected by tightening from the outer peripheral part of a hose with a fastening member.

  The intake portion may have an intake port for sucking air to be supplied to an air intake port of the vacuum breaker and the first connecting portion at an upper portion, and may be formed in a box shape. In this case, since the intake port and the first connecting portion are provided on the upper portion of the box-shaped intake portion, it is difficult for sewage to flow from the intake port and the first connecting portion. In other words, it is difficult for sewage to flow into the hose connected to the intake section.Therefore, when the pressure inside the water supply channel upstream of the vacuum breaker becomes negative pressure and air is taken in from the air intake of the vacuum breaker, sewage enters the air intake. Inflow can be prevented.

  The intake portion may have a drain port at a lower end portion for draining water that has flowed out of the air intake port. In this case, water that has flowed out of the air intake port of the vacuum breaker can be flowed into the intake portion via the hose and drained from the drain port to a predetermined location.

  The intake portion includes a water receiving portion having an inclined surface that is inclined upward from the side surface portion below the first connecting portion to the outside, and an inlet opening the side surface portion along the inclined surface. Can do. In this case, even if the water flowing out from the air intake port of the vacuum breaker flows out of the intake portion from the portion where the first connecting portion and the hose are connected, the water is received by the water receiving portion. It can be returned from the inlet into the intake. For this reason, the water can be drained to a predetermined place from the drain port provided in the intake portion.

  The notch may be formed on a lower surface of the first connecting portion, and the inflow port may communicate with the notch. In this case, the water flowing out from the portion where the first connecting portion and the hose are connected can flow downward along the edge of the inflow port and flow into the intake portion. For this reason, the water can be drained to a predetermined place from the drain port provided in the intake portion.

A waste water hose connected to the water supply channel,
The intake portion may have a second connection portion that connects the waste water hose so that water flowing down the waste water hose is drained from the drain port.

  In this case, the water that has flowed down the waste water hose can be drained to a predetermined place from the drain port provided in the intake portion. Moreover, the water supply apparatus can be made compact by collecting the water discharged from the water supply channel in the intake section.

It is the schematic which shows the water circuit of the water supply apparatus used for the local washing | cleaning apparatus of an Example. It is sectional drawing which shows the intake part of an Example. It is a side view which shows the intake part main body of an Example. It is a perspective view which shows the intake part main body of an Example. It is a rear view which shows the intake part main body of an Example. It is a top view which shows the intake part main body of an Example. It is arrow XX sectional drawing in FIG.

  An embodiment in which the water supply device of the present invention is embodied in a local cleaning device that is a toilet equipment device will be described with reference to the drawings.

<Example>
As shown in FIG. 1, the water supply device used in the local cleaning device of the embodiment includes a water supply passage 10 that communicates with a water pipe (not shown) and supplies cleaning water to the nozzle unit 20 of the local cleaning device. The water supply path 10 communicates with the strainer unit 11, the constant flow valve 12, the electromagnetic on-off valve 13, the flow sensor 14, the heat exchange unit 15, the buffer tank 16, the pump P, and the nozzle unit 20 in order from the upstream side. . The heat exchanging unit 15 has an incoming water thermistor 15A provided at the upstream end of the internal flow path, and a hot water thermistor 15B and a thermostat 15C provided at the downstream end.

  The nozzle unit 20 includes a butt cleaning nozzle 21 and a bidet cleaning nozzle 22. Further, the nozzle unit 20 includes a two-path buttocks water supply path 21A that supplies cleaning water to the buttocks cleaning nozzle 21, a one-channel bidet water supply path 22A that supplies cleaning water to the bidet cleaning nozzle 22, A cleaning water supply path 23 for cleaning the bottom cleaning nozzle 21 and the bidet cleaning nozzle 22 is provided. Furthermore, the nozzle unit 20 switches the outlet of the cleaning water flowing in from the water supply channel 10 to any of the water supply channel 21A for the butt, the water supply channel 22A for the bidet, or the water supply channel 23 for cleaning, and adjusts the flow rate of the flowing out. A switching valve 24 with a flow rate adjusting function is provided.

  The water supply device includes a first vacuum breaker 31 that is connected to the water supply passage 10 on the downstream side of the electromagnetic on-off valve 13 and on the upstream side of the flow sensor 14 via the communication passage 17. In addition, the water supply device includes a second vacuum breaker 32 that is connected to the water supply passage 10 on the downstream side of the pump P and upstream of the switching valve 24 with the flow rate adjusting function of the nozzle unit 20 via the communication passage 18. Yes.

  The first vacuum breaker 31 and the second vacuum breaker 32 have air intakes 31A and 32A, respectively. The water supply apparatus includes a hose 33A connected to the air intake port 31A of the first vacuum breaker 31 and a hose 33B connected to the air intake port 32A of the second vacuum breaker 32. The hose 33A and the hose 33B are connected at an intermediate portion, and one hose 33C extends from the intermediate portion.

  The water supply device sucks air supplied to the air intake port 31A of the first vacuum breaker 31 via the hoses 33C and 33A, and supplies the air to the air intake port 32A of the second vacuum breaker 32 via the hoses 33C and 33B. An air intake section 40 for sucking air is provided. The intake portion 40 has a first connecting portion 41 that connects the tip of the hose 33C.

  The water supply apparatus includes a waste water hose 34 that branches off the communication path 17 that communicates with the water supply path 10. The intake portion 40 has a second connecting portion 42 that connects the waste water hose 34, and connects the tip of the waste water hose 34. The local washing apparatus having the water supply device configured as described above is mounted on the upper surface of the toilet body 1 and behind the toilet bowl 2.

  As shown in FIGS. 2 to 7, the air intake portion 40 is composed of an air intake portion main body 40A and a part of a base plate 40B. The intake portion main body 40A has an upper surface portion 43 formed of an inclined surface that rises rearward (rightward in FIGS. 2 and 3), and a side surface portion 44 that extends downward from the periphery of the upper surface portion 43. A cavity 45 is formed in the bottom. In this way, the intake portion 40 is formed in a box shape.

  The base plate 40B fixes the components constituting the local cleaning device such as the water supply device described above to the upper surface, and when the local cleaning device is attached to the upper surface of the toilet body 1, the rear of the toilet bowl 2 of the toilet body 1 It is fixed to the upper surface. The intake portion main body 40A is fixed to the upper surface of the end portion of the base plate 40B located on the toilet bowl portion 2 side in a state where the base plate 40B is fixed to the upper surface of the toilet body 1. A cover member (not shown) is attached to the base plate 40B so as to cover parts constituting a local cleaning device such as a water supply device fixed to the upper surface. Further, a toilet seat and a toilet lid (not shown) are rotatably attached to the cover member.

  The first connecting portion 41 extends from the upper portion of the side portion 44 on the rear side (right side in FIGS. 2 and 3) of the intake portion main body 40A so as to protrude obliquely upward and rearward. The 1st connection part 41 is inserted inside from opening of the front-end | tip of hose 33C, and is connected with the front-end | tip part of hose 33C. The hose 33C and the first connecting portion 41 are fastened from the outer peripheral portion of the hose 33C by a fastening member (not shown). For this reason, the hose 33C and the 1st connection part 41 can be connected firmly.

  The first connecting portion 41 includes a through hole 41A that penetrates in the insertion direction, and a cutout portion 41B that communicates with the through hole 41A and extends in the insertion direction. The notch portion 41 </ b> B is formed on the lower surface of the first connecting portion 41. In other words, the first connecting portion 41 is opened by the notch portion 41B below the through hole 41A. The intake portion main body 40A has an intake port 46 penetrating in a vertical direction at a rear end portion that is an upper portion of the inclined upper surface portion 43.

  Since the cutout portion 41B is provided in the first connecting portion 41, the flow passage area of the portion where the first connecting portion 41 is inserted inward from the opening at the tip of the hose 33C is larger by the flow passage area of the cutout portion 41B. It has become. For this reason, the flow rate of air that can flow through this portion is increased. Therefore, sufficient air can be taken in from the air intake ports 31 </ b> A and 32 </ b> A of the first vacuum breaker 31 and the second vacuum breaker 32. That is, even if the inside of the water supply passage 10 upstream of the first vacuum breaker 31 and the second vacuum breaker 32 becomes negative pressure, the air intakes 31A and 32A of the first vacuum breaker 31 and the second vacuum breaker 32 are used. Since sufficient air can be taken in, suction of the sewage on the downstream side of the water supply channel 10 to the upstream side is suppressed, and the backflow of sewage can be reliably prevented.

  Therefore, the water supply device used in the local cleaning device of the embodiment can reliably prevent the backflow of sewage in the water supply channel.

  In addition, since the intake port 46 and the first connecting portion 41 are provided on the upper portion of the intake portion 40, it is difficult for sewage to flow from the intake port 46 and the first connecting portion 41. That is, it is difficult for sewage to flow into the hoses 33C, 33A, 33B connected to the intake section 40. For this reason, the inside of the water supply channel 10 upstream of the first vacuum breaker 31 and the second vacuum breaker 32 becomes negative pressure, and air is supplied from the air intake ports 31A and 32A of the first vacuum breaker 31 and the second vacuum breaker 32. Can be reliably prevented from flowing into the air intake ports 31A, 32A.

  The intake portion 40 has a drain port 47 penetrating in the vertical direction at the front end portion of the base plate 40 </ b> B that forms the lower surface of the hollow portion 45. The drain port 47 is formed in a portion where the base plate 40B protrudes above the toilet bowl 2. For this reason, the water that has flowed into the cavity 45 of the intake portion 40 from the air intake port 31A of the first vacuum breaker 31 via the hoses 33A and 33C, and the hose 33B and 33C from the air intake port 32A of the second vacuum breaker 32. The water that has flowed into the hollow portion 45 of the intake portion 40 via the drainage port 47 can be drained from the drain port 47 to a predetermined place of the toilet bowl 2.

  Further, when water flows from the hose 33 </ b> C into the hollow portion 45 of the intake portion 40, the first connecting portion 41 is inclined downward toward the front, so that the water is downward toward the front inside the hollow portion 45. To leak. At this time, when the momentum of the water flowing out into the hollow portion 45 is strong, the water collides with the inner surface of the upper surface portion 43 inclined downward toward the front. The water that has collided with the inner surface of the upper surface portion 43 flows down in the hollow portion 45 because the inner surface of the upper surface portion 43 is inclined downward toward the front. Therefore, the water that has flowed into the cavity 45 can be reliably drained from the drain port 47 without flowing out from the inlet port 46.

  The intake portion main body 40A has a water receiving portion 48 having an inclined surface 48A inclined upward from the side surface portion 44 below the first connecting portion 41 toward the rear. The water receiving portion 48 includes a standing wall portion 48B extending upward from both left and right end portions of the inclined surface 48A. In addition, the intake portion main body 40 </ b> A has an inlet 49 that opens the side surface portion 44 along the inclined surface 48 </ b> A of the water receiving portion 48. The inflow port 49 gradually narrows in the left-right width from the middle part in the vertical direction upward and communicates with the cutout part 41 </ b> B provided in the first connection part 41.

  Water flowing out from the air intake port 31A of the first vacuum breaker 31 or the air intake port 32A of the second vacuum breaker 32 flows out from the portion connecting the first connecting portion 41 and the hose 33C to the outside of the intake portion 40. Even if it has been, the water can be received by the water receiver 48 and returned from the inlet 49 into the cavity 45. Further, the water flowing out from the portion where the first connecting portion 41 and the hose 33C are connected can flow downward along the edge of the inflow port 49 and flow into the hollow portion 45. For this reason, it can drain to the predetermined place of the toilet bowl part 2 from the drain outlet 47. FIG.

  The second connecting portion 42 is formed at a front end portion of the intake portion main body 40A and above the drain port 47 so as to penetrate in the vertical direction. The second connecting portion 42 has a circular shape whose plan view shape is slightly larger than the outer diameter of the discarded water hose 34 and has a rectangular through-hole portion 42A extending outward from two locations on the peripheral portion. doing. The discarded water hose 34 has a distal end portion inserted into the second connecting portion 42 from above, and the opening at the distal end is located directly above the drain outlet 47. Moreover, the tip part inserted in the 2nd connection part 42 has faced the orthogonal | vertical direction so that the waste water hose 34 drains waste water perpendicularly | vertically from opening of a front-end | tip.

  When the flow rate of cleaning water supplied to the nozzle unit 20 is reduced and the flow rate of cleaning water supplied from the water pipe to the water supply device increases, the local cleaning device discards excess water. It drains into the toilet bowl 2 through the hose 34. At this time, the water can be drained from a drain port 47 of the intake section 40 to a predetermined place of the toilet bowl section 2. In this way, the water supply device can be made compact by collecting the water drained from the water supply channel 10 in the intake section 40.

  Further, since the surplus water drained from the opening at the tip of the waste water hose 34 has a momentum, the slime generated at the drain port 47 can be washed away by this surplus water. For this reason, it is possible to prevent the drain outlet 47 from being closed by slimming.

  Further, when a negative pressure is generated in the water supply channel 10 and air is sucked through the waste water hose 34, the air is sucked from the through-hole portion 42 </ b> A of the second connecting portion 42, so the waste water hose 34. Can reliably prevent the sewage from being sucked.

  The intake portion main body 40A includes an upper guide portion 51 and a lower guide portion 52 that guide the waste water hose 34 obliquely upward from the second connecting portion 42 to the rear. The upper guide portion 51 extends outward from the upper surface portion 43 and is formed in a flat plate shape. The lower guide portion 52 is formed with a semi-cylindrical convex portion 52A that swells upward at the front end portion. Further, the lower guide portion 52 is formed in a flat plate shape in which the rear of the convex portion 52 </ b> A extends to a position parallel to the upper guide portion 51. The upper guide portion 51 and the rear portion of the lower guide portion 52 have an interval substantially equal to the outer diameter of the waste water hose 34, and can guide the waste water hose 34 while sandwiching it. The convex portion 52A formed at the front end portion of the lower guide portion 52 makes it easy to dispose the distal end portion of the waste water hose 34 in the second connecting portion 42 in the vertical direction, and without suddenly bending the waste water hose 34. The waste water hose 34 is prevented from being crushed.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the embodiment, the water supply device is used for the local cleaning device, but may be used for other toilet equipment such as a toilet cleaning device. In particular, it is effective when used in an apparatus with limited space.
(2) In the embodiment, the intake portion is formed in a box shape, but the intake portion may have any shape. In this case, it is only necessary that the first connecting portion is formed to extend from the intake portion.
(3) In the embodiment, the intake port is formed on the upper surface portion of the intake unit. However, the intake port may be formed anywhere in the intake unit. In this case, it is preferable that the intake port is formed at a high position because sewage hardly flows.
(4) In the embodiment, the first connecting portion is provided on the upper portion of the side surface portion of the intake portion. However, the first connecting portion may be provided anywhere on the intake portion. In this case, it is preferable to provide the first connecting portion at a high position because sewage hardly flows.
(5) In the embodiment, the intake part is constituted by the intake part main body and a part of the base plate. However, the intake part may be constituted by one part.
(6) Although the water receiving part is provided in the intake part in the embodiment, the water receiving part may not be provided. In this case, the inlet may not be provided in the intake portion.
(7) In the embodiment, the inflow port communicates with the notch, but it does not need to communicate.
(8) In the embodiment, the discarded water hose is connected to the intake portion, but the discarded water hose may not be connected to the intake portion. In this case, the waste water hose may be connected to other parts to drain excess water to the toilet bowl.

DESCRIPTION OF SYMBOLS 10 ... Water supply path 31, 32 ... Vacuum breaker 31A, 32A ... Air intake port 33A, 33B, 33C ... Hose 34 ... Waste water hose 40 ... Intake part 41 ... 1st connection part 41A ... Through-hole 41B ... Notch part 42 ... 2nd connection part 44 ... Side surface part 46 ... Intake port 47 ... Drain port 48 ... Water receiving part 48A ... Inclined surface 49 ... Inflow port

Claims (7)

A water supply channel communicating with the water pipe,
A vacuum breaker communicating with this water supply channel and having an air intake;
A hose connected to this air intake,
A water supply device comprising an intake portion for sucking air supplied to the air intake through the hose,
The intake portion includes a through hole that is inserted inward from the opening at the tip of the hose and penetrates in the insertion direction, and a notch portion that communicates with the through hole and extends in the insertion direction, and extends in a protruding state. A water supply device having a first connecting portion.   2. The intake portion according to claim 1, wherein the intake portion has an intake port for sucking air to be supplied to an air intake port of the vacuum breaker, and the first connecting portion, and is formed in a box shape. Water supply apparatus of description.   The water supply device according to claim 2, wherein the intake portion has a drain port for draining water flowing out from the air intake port at a lower end portion.   The intake portion includes a water receiving portion having an inclined surface that is inclined upward from the side surface portion below the first connecting portion to the outside, and an inlet opening the side surface portion along the inclined surface. The water supply device according to claim 3, wherein the water supply device is provided.   The water supply device according to claim 4, wherein the notch is formed on a lower surface of the first connecting part, and the inflow port is communicated with the notch. A waste water hose connected to the water supply channel,
The said intake part has a 2nd connection part which connects this waste water hose so that the water which flowed down this waste water hose may be drained from the said drain outlet. The water supply apparatus of any one of Claims. A toilet equipment device comprising the water supply device according to any one of claims 1 to 6 .

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