JP2008261168A - Intake device of toilet bowl drainage channel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intake device of a toilet bowl drainage channel, which enables the effective utilization of a dead space of a toilet bowl body, and which can be easily installed in the toilet bowl body. <P>SOLUTION: This intake device of the toilet bowl drainage channel 5 is equipped with an intake means for taking in air from the toilet bowl drainage channel 5 of the toilet bowl body 1. The intake means comprises an ejector 30, a negative-pressure accumulator tank 70 for accumulating negative pressure, which is connected to the ejector 30, and a suction tank 80 for sucking in the air from the toilet bowl drainage channel 5, which is connected between the negative-pressure accumulator tank 70 and the toilet bowl drainage channel 5. The negative-pressure accumulator tank 70 can be suspended from above in a storage space 1Q which is formed in the rear of the toilet bowl 2 of the toilet bowl body 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction device for a toilet drainage channel.

8 to 15 of Patent Document 1 disclose a conventional toilet drainage intake device. This air intake device includes an air intake means for taking in air from a toilet drainage channel connected to the downstream side of the water seal portion of the toilet body.
Specifically, the intake means is connected to the negative pressure generating device and the negative pressure generating device and the toilet drainage channel via an open / close valve, and accumulates the negative pressure and sucks air from the toilet drainage channel. A pressure accumulating tank and control means for controlling the on-off valve are provided.
The conventional toilet drainage intake device having such a configuration can quickly fill the toilet drainage channel with flushing water by sucking the air in the toilet drainage channel, so that the flushing channel can be quickly filled with less flushing water. Can generate siphon action.
JP 2006-177051 A

  By the way, since further downsizing and improvement in workability are required for the toilet bowl, the dead space of the toilet bowl body is effectively used for the above-described conventional toilet drainage intake device, and the toilet bowl body Therefore, it is required to be easily attachable. However, in the conventional air intake apparatus, as described above, since the air intake means is an assembly of a plurality of components, there is a situation that the installation space is likely to be large and the installation work is troublesome.

  The present invention has been made in view of the above-described conventional circumstances, and should provide a suction device for a toilet drainage channel that can effectively use the dead space of the toilet body and can be easily installed in the toilet body. It is an issue.

  An air intake device for a toilet drainage channel according to the present invention is an intake device for a toilet drainage channel including an air intake unit that sucks air from a toilet drainage channel connected to a downstream side of a water seal portion of a toilet body. A generator, a negative pressure accumulator tank connected to the negative pressure generator and accumulating negative pressure, and a transmission device connected to the negative pressure accumulator tank and transmitting negative pressure to the toilet drainage channel, The negative pressure accumulating tank is configured to be hangable from above in a storage space formed at the rear of the toilet bowl in the toilet body.

  In the toilet drainage intake device of the present invention having such a configuration, when a negative pressure accumulating tank is installed in the toilet body, it is only suspended from above in a storage space formed behind the toilet bowl in the toilet body. Good.

  Therefore, the air intake device for the toilet drainage channel according to the present invention can effectively use the dead space of the toilet body and can be easily installed in the toilet body.

  In addition, since the intake device for the toilet drainage channel does not include a support base that supports the negative pressure accumulating tank from below in the storage space, the configuration can be simplified.

  In the suction device for a toilet drainage channel according to the present invention, the negative pressure generating device and the negative pressure accumulating tank are connected by a first pressure guiding pipe provided with a check valve on the way, and the first pressure guiding pipe is connected with the negative pressure. It is preferable to be connected to the lowermost part of the pressure accumulation tank.

  In this case, even if water is generated in the negative pressure accumulator tank due to condensation or the like, it is connected to the lowermost part of the negative pressure accumulator tank as the air in the negative pressure accumulator tank is sucked by the negative pressure generator. The water can be easily discharged from the negative pressure accumulating tank via the first pressure guiding pipe.

  In the toilet device drainage intake device of the present invention, the negative pressure accumulator tank has a barrel shape having a substantially cylindrical tubular portion, and the tubular portion is provided with one or more belt-shaped concave portions that turn around in the circumferential direction. It is preferable that a belt-like suspension member is wound around the outer peripheral surface of the recess.

  In this case, the negative pressure accumulating tank has sufficient strength to withstand the negative pressure due to the concave portion, so that it can be prevented from being deformed by the negative pressure.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. As shown in FIG. 6, the air intake device for the toilet drainage channel constitutes a part of a Western-style flush toilet, and the Western-style flush toilet includes the intake device, the toilet body 1, and the water conduit 10. Yes. Illustration of the toilet seat and toilet lid is omitted.

  The toilet body 1 has a rim 3 on the upper inner periphery of the toilet bowl 2. The toilet body 1 has an ascending channel extending rearward from the lower end of the stool 2 on the back side of the stool 2, and the ascending channel extends to a position where the highest water level is set during installation. A water seal 4 including an ascending channel is formed below the toilet bowl 2. The ascending flow path of the toilet body 1 is connected to a connecting pipe 90, and in the connecting pipe 90, a toilet drainage channel 5, a staying part 6, and a drain port 7 are arranged in order from the position near the water seal part 4. . Of these, the toilet drainage channel 5 falls with a downward slope from the upper end of the ascending channel toward the staying unit 6. As shown in FIGS. 1 and 2, the toilet body 1 includes a storage portion 1 </ b> S that is surrounded by a side wall 11 that is open at the rear of the toilet bowl 2 and that is continuous from the toilet bowl 2 at the left and right and rear. ing. The configuration in the storage unit 1S (hereinafter referred to as storage space 1Q) will be described in detail later.

  As shown in FIG. 6, the water conduit 10 is connected to a water pipe via a water stop valve V5 and can be opened and closed by a first on-off valve V1.

  The intake device includes a negative pressure generating device that generates a negative pressure by operation, a negative pressure accumulation tank 70 that accumulates the negative pressure, and a transmission device that transmits the negative pressure to the toilet drainage channel 5 side. In this embodiment, the transmission device is constituted by a suction tank 80 for sucking air from the toilet drainage channel 5, and the negative pressure generating device is constituted by an ejector 30.

  The ejector 30 has an introduction port 31 to which the end of the water conduit 10 is connected at the upper end thereof, and has an outlet port 32 facing the inside of the tank 20 in which cleaning water is stored at the lower end thereof. Further, the ejector 30 has an intake port 33 communicating with the outside between the outlet port 32 and the inlet port 31, and the intake port 33 is connected to the negative pressure accumulating tank 70 via the first pressure guiding pipe 110. . As will be described later, as washing water flows through the ejector 30, air is sucked from the intake port 33, and thereby negative pressure is stored in the negative pressure storage tank 70.

  A check valve 111 that allows only the inflow of air from the outside to the ejector 30 side is provided at one end of the first pressure guiding pipe 110 near the intake port 33. The second pressure pipe 120 is branched and connected to the other end of the first pressure pipe 110 closer to the negative pressure accumulation tank 70 than the check valve 111, and the third pressure pipe 130 is branched. Connected. One end of the second pressure guiding pipe 120 opens to the outside, and the other end is connected to the first pressure guiding pipe 110 via the second on-off valve V2 so as to be openable and closable. The third pressure guiding pipe 130 has one end communicating with the suction tank 80 and the other end connected to the first pressure guiding pipe 110 via the third on-off valve V3 so as to be openable and closable.

  The inside of the suction tank 80 is partitioned into a first chamber 81 and a second chamber 82 by a diaphragm 83 that can move in the vertical direction at the time of installation. The first chamber 81 communicates with the third pressure guiding tube 130, and the second chamber 82 communicates with the toilet drainage channel 5 through the suction tube 85. The first on-off valve V1, the second on-off valve V2, and the third on-off valve V3 are air on-off valves, and the control device C controls the on-off timing and on-off time.

Next, an outline of the operation of the toilet bowl cleaning apparatus will be described with reference to FIG.
At the time of non-cleaning, the first on-off valve V1, the second on-off valve V2, and the third on-off valve V3 are closed. In this state, cleaning water is stored in the tank 20, and the diaphragm 83 in the suction tank 80 is in contact with the lower inner wall surface in the suction tank 80.

  After the flight, when the first on-off valve V1 is opened, the wash water flows into the tank 20 through the water conduit 10, and the wash water in the tank 20 is supplied to the rim 3 through the water pipe 45. The The washing water supplied to the rim 3 flows down while turning along the inner surface of the toilet bowl 2 and collects filth in the center of the toilet bowl 2. During this time, the wash water also flows into the ejector 30 to generate a negative pressure, and the negative pressure is accumulated in the negative pressure accumulation tank 70 by this negative pressure.

  When the third on-off valve V3 is opened after the lapse of a predetermined time, the negative pressure in the negative pressure accumulating tank 70 is transmitted to the suction tank 80 via the third pressure guiding pipe 130, and the inside of the first chamber 81 becomes negative pressure. Thus, the diaphragm 83 is pulled up to a position where it can contact the upper inner wall surface of the suction tank 80. As the diaphragm 83 is pulled up, the air in the toilet drainage channel 5 is sucked into the second chamber 82 and a negative pressure is also transmitted into the toilet drainage channel 5. Then, due to this negative pressure transmission into the toilet drainage channel 5, the toilet drainage channel 5 is filled with washing water, a siphon action occurs, and a discharge flow is formed early with less washing water. In addition, the filth collected in the center of the toilet bowl 2 is reliably discharged to the toilet drainage channel 5 side on the suctioned wash water.

  Further, after a predetermined time has elapsed, the second on-off valve V2 is opened, and the third on-off valve V3 is closed. Along with the opening of the second on-off valve V2, a large amount of air flows into the tank 20 through the first pressure guiding pipe 110, and the wash water in the tank 20 is pushed out to the rim 3 side by the inflowed air. Thereby, the amount of water supplied to the toilet bowl 2 increases rapidly, and the filth remaining in the toilet bowl 2 is more reliably discharged to the toilet drainage channel 5 side.

  Thereafter, when the first on-off valve V1 is closed and the third on-off valve V3 is opened, the first chamber 81 of the suction tank 80 communicates with the outside via the second on-off valve V2, and the inside of the first chamber 81 is At almost atmospheric pressure, the diaphragm 83 descends. Along with this, air is pushed into the toilet drainage channel 5 from the second chamber 82, the air in the toilet drainage channel 5 increases, and the siphon action ends.

Next, the negative pressure accumulating tank 70 and its peripheral structure, which are characteristic configurations of this embodiment, will be described.
The negative pressure accumulating tank 70 is made of a synthetic resin and has a barrel shape as a whole as shown in FIGS. Specifically, the negative pressure accumulating tank 70 is integrally formed from a cylindrical tube portion 71 and a pair of front and rear curved surface portions 72 that closes both end openings of the tube portion 71 and bulges outward, and the inside thereof is a hollow portion 73. ing. The negative pressure accumulating tank 70 is composed of a pair of halves 74 that vertically divide the cylindrical portion 71 and the curved surface portion 72, and the halves 74 are joined together by welding their opposite edges.

  A connecting cylinder part 75 that protrudes downward while penetrating the lower wall of the cylinder part 71 is integrally formed at the lower end (lowermost part) of the negative pressure accumulating tank 70. The hollow portion 73 of the negative pressure accumulating tank 70 communicates with the inside of the first pressure guiding tube 110 through the connection opening 75A of the connecting cylinder portion 75. However, except for the inside of the first pressure guiding tube 110, the hollow portion 73 is surrounded and sealed by the outer wall. ing.

  In addition, an L-shaped connecting pipe material 77 constituting the terminal portion of the first pressure guiding pipe 110 is fitted in the connecting cylinder part 75. A seal ring 78 is interposed between the outer peripheral surface of the connecting pipe member 77 and the inner peripheral surface of the connecting tube portion 75. Further, a C-shaped stopper 79 is attached to the outer peripheral surface of the connecting pipe member 77 and the outer peripheral surface of the connecting tube part 75 across the outer peripheral surface, and the connecting tube member 77 is fixed to the connecting tube part 75 by the stopper 79. Has been. The terminal of the connecting pipe 77 opens in a substantially horizontal direction, and the terminal of the main body portion of the first pressure guiding pipe 110 is fitted and connected thereto.

  Since the connection opening 75A of the connection cylinder portion 75 is at the bottom of the negative pressure accumulating tank 70 and opens downward, water should enter the negative pressure accumulating tank 70 or condensation water may be generated. However, such water is reliably discharged from the hollow portion 73 to the first pressure guiding tube 110 side through the connection opening 75A. Therefore, the negative pressure accumulation performance of the negative pressure accumulation tank 70 can be maintained satisfactorily over a long period of time.

  Further, the cylindrical portion 71 of the negative pressure accumulating tank 70 is provided with a band-shaped recess 76 that makes a round in the circumferential direction. Two recesses 76 are provided at both ends of the cylindrical portion 71 with a space therebetween, and both the inner peripheral surface and the outer peripheral surface are recessed inward in the radial direction. A metal suspension member 150 is wound around the outer peripheral surface of the recess 76. The suspension member 150 has a strip shape and a C-shape that can be reduced in diameter, and is tightly fitted in the recess 76. The suspension member 150 is turned around the outer peripheral surface of the recess 76 so as to hold the negative pressure accumulating tank 70 from above, and both free ends thereof are positioned above the cylinder portion 71. At both free ends of the suspension member 150, attachment portions 151 for the bracket 160 are formed to rise substantially vertically.

  The suspension member 150 is fixed to the bracket 160 by a mounting portion 151. The bracket 160 is formed by bending a metal plate. The main body part 161 partially covers the vicinity of the upper surface opening of the storage part 1S, and stands upward from the peripheral part of the main body part 161 and bends its upper end outward. Thus, a plurality of support portions 162 that are hooked on the opening edge portion of the upper surface opening of the storage portion 1S are provided. That is, the bracket 160 is installed in the storage space 1 </ b> Q of the toilet body 1 by the support portions 162.

  A receiving part 163 cut and raised downward is formed on the main body part 161, and bolting is performed at a place where the receiving part 163 and the attachment part 151 of the suspension member 150 face each other, and both are fixed. It is like that. In this way, the suspension member 150 is fixed to the bracket 160, and the bracket 160 is supported by the toilet main body 1, whereby the negative pressure accumulating tank 70 is accommodated in the storage space 1Q of the toilet main body 1 while being suspended from above. The

  In addition, an inner space surrounded by the main body portion 161 and each support portion 162 in the bracket 160 is an assembly space 160 </ b> A of the suction tank 80. The suction tank 80 is inserted into the assembly space 160A from above and placed on the upper surface of the main body 161. In addition to the support portions 162, the bracket 160 is formed with a plurality of upright portions 164 that rise upward from the peripheral edge portion of the main body portion 161, and the outer peripheral edge of the suction tank 80 is formed at the upper end of each upright portion 164. A pressing piece 165 that restricts the suction tank 80 from coming out of the assembly space 160 </ b> A by being pressed from above is connected.

  As described above, the bracket 160 suspends and supports the negative pressure accumulating tank 70 on the lower surface side and also supports the suction tank 80 on the upper surface side, so that the negative pressure accumulating tank 70 and the suction tank 80 are connected to each other. The number of parts can be reduced as compared with the case where each is supported by a dedicated bracket 160.

  As described above, the negative pressure accumulating tank 70 is disposed in the storage space 1Q while being supported by the suspension member 150 and the bracket 160. In the storage space 1Q of the toilet body 1, in addition to the storage area of the negative pressure accumulating tank 70, a storage area in which the tank 20, the ejector 30, the drainage connection pipe 90, and the like are disposed is provided. As shown in FIG. 1, the storage region of the negative pressure accumulating tank 70 is located next to the upstream portion 91 of the connection pipe 90 and above the downstream portion 92 of the connection pipe 90. On the opposite side of the storage space 1Q of the toilet body 1 from the storage area of the negative pressure accumulating tank 70 with the upstream portion 91 of the connecting pipe 90 interposed therebetween, the ejector 30 and the tank 20 are arranged vertically.

  Further, the negative pressure accumulating tank 70 is arranged in a state of floating upward from the downstream portion 92 of the connection pipe 90 by the suspension member 150, and the curved surface portion 72 is the same as the opening side of the drainage inlet 93 of the connection pipe 90. The tube portion 71 is arranged so that the axial direction of the tube portion 71 is substantially aligned in the horizontal direction. The bracket 160 that supports the negative pressure accumulating tank 70 is located immediately above the upstream portion 91 of the connection pipe 90, and the suction tank 80 is disposed above the connection pipe 90. Therefore, the negative pressure accumulating tank 70 includes a suction tank 80 positioned above, a downstream portion 92 of the connecting pipe 90 positioned below, an upstream portion 91 of the connecting pipe 90 positioned on the left side in the figure, and a right side in the figure. It will be installed in a space surrounded by the side wall 11 of the toilet body 1 located.

  Here, the downstream portion 92 of the connection pipe 90 has a shape in which a scissors are wound in order to shorten the front-rear length, and is arranged so as to protrude in the lateral direction. Then, in setting the negative pressure accumulating tank 70 next to the connecting pipe 90, it is necessary to avoid interference with the downstream portion 92 of the connecting pipe 90. In this case, since the outer peripheral surface of the connection pipe 90 has a curved shape, it is difficult to construct a support base that supports the negative pressure accumulating tank 70 across the downstream portion 92 of the connection pipe 90 because the structure of the support base is large and complicated. It will become something.

  In that respect, in the present invention, the negative pressure accumulating tank 70 only needs to be suspended and supported by the suspension member 150, so that the configuration is greatly simplified, the practicality is improved, and it can be manufactured at low cost. Moreover, the dead space of the toilet body 1 can be effectively used, and the assembling property to the toilet body 1 is also improved.

  Thus, in the intake device of the present invention, since the negative pressure accumulating tank 70 is suspended from above in the storage space 1Q of the toilet body 1, other components (the tank 20 and the ejector 30) stored in the storage space 1Q. It is easy to avoid interference with the connecting pipe 90, the suction tank 80, etc.), and the storage space 1Q can be used without waste. In this case, since the suspending member 150 may be used as the suspending means, the above-described support base can be eliminated, and the vacant space can be used effectively.

  In addition, since a connection opening 75A leading to the first pressure guiding pipe 110 is formed at the lowermost part of the negative pressure accumulator tank 70, water should enter the hollow portion 73 of the negative pressure accumulator tank 70 or dew condensation water should be generated. Even if it occurs, such water is collected in the connection opening 75A and discharged into the first pressure guiding tube 110 from the connection opening 75A.

  Furthermore, since the negative pressure accumulating tank 70 has a barrel shape as a whole, the strength thereof is increased, and it is possible to prevent the dent from being deformed when negative pressure is generated. In this case, the strength of the negative pressure accumulating tank 70 can be further increased by the recess 76 provided in the cylindrical portion 71. And this recessed part 76 has the function as positioning of the suspending member 150 with respect to the negative pressure accumulating tank 70.

The said Example is an example of this invention and this invention is not limited to the said Example.
For example, the bracket 160 may be eliminated, and the attachment portion 151 of the suspension member 150 may be directly hooked on the opening edge of the upper surface opening of the storage portion 1S.
Further, the number of the suspension members 150 is not particularly limited as long as the negative pressure accumulating tank 70 can be suspended, and may be 1 or 3 or more.
Furthermore, instead of the suction tank 80, another pressure guiding pipe that connects the toilet drainage channel 5 and the first pressure guiding pipe 110 may be installed as a negative pressure transmission means.

  The present invention can be used for flush toilets.

It is a longitudinal cross-sectional view of the toilet bowl body which shows the state in which the suction device of the toilet drainage channel of the Example was accommodated. It is a sectional side view of the toilet bowl main body which shows the state in which the air intake apparatus of the toilet drainage channel was accommodated. It is a perspective view of a negative pressure accumulation tank. It is a front view of a negative pressure accumulation tank. It is a sectional side view of a negative pressure accumulation tank. It is a schematic diagram explaining the action | operation of a Western-style flush toilet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Toilet body 1Q ... Storage space 30 ... Ejector 70 ... Negative pressure accumulation tank 71 ... Cylindrical part 76 ... Recessed part 80 ... Suction tank 150 ... Hanging member

Claims (3)

In the intake device of the toilet drainage channel having an intake means for sucking air from the toilet drainage channel connected to the downstream side of the water seal portion of the toilet body,
The intake means is connected to a negative pressure generator, the negative pressure generator, a negative pressure storage tank for storing negative pressure, and the negative pressure storage tank, and transmits the negative pressure to the toilet drainage channel. A transmission device,
The suction device for a toilet drainage channel, wherein the negative pressure accumulating tank is configured to be hung from above in a storage space formed behind a toilet bowl in the toilet body. The negative pressure generating device and the negative pressure accumulating tank are connected by a first pressure guiding pipe provided with a check valve on the way,
2. The toilet drainage intake device according to claim 1, wherein the first pressure guiding pipe is connected to a lowermost portion of the negative pressure accumulating tank. The negative pressure accumulator tank has a barrel shape having a substantially cylindrical tube portion,
The cylindrical portion is provided with one or more belt-shaped recesses that go around in the circumferential direction,
3. The toilet drainage intake device according to claim 1, wherein a belt-like suspension member is wound around the outer peripheral surface of the recess.

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