JP2010144492A - Cleaning water discharge apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning water discharge apparatus discharging cleaning water with a high cleaning effect containing a large quantity of air bubbles. <P>SOLUTION: The cleaning water discharge apparatus includes a cleaning water passage 5 with a discharge port 6 provided at the downstream end. A restriction part 43 is provided at an intermediate part of the cleaning water passage 5. The inner surface of the restriction part 43 is formed as a restriction surface 44 gradually reduced in diameter toward downstream. Gas is mixed into wash water flowing in the cleaning water passage 5 by negative pressure generated at the restriction part 43, thereby discharging the cleaning water containing gas. The restriction surface 44 is provided with a protrusion 61 agitating the flow of cleaning water. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cleaning water discharge device.

  The currants installed on the conventional sinks discharge tap water, and it is difficult to clean the objects to be cleaned such as dishes.

Further, for example, as in Patent Document 1, a cleaning water discharge device that discharges air by mixing bubbles in tap water is known. In this method, a throttle part is formed in the middle of the flow path through which the cleaning water flows, and the inner surface becomes a throttle surface that gradually decreases in diameter toward the downstream side. In this way, the gas is mixed in and the cleaning water containing bubbles having a high cleaning effect is discharged from the discharge port.
Utility Model Registration No. 3131528

  By the way, in the cleaning water discharge device that discharges cleaning water containing bubbles as described above, it is necessary to mix a sufficient amount of bubbles in the cleaning water in order to ensure the cleaning effect. It is difficult to mix gas, and in this case, the cleaning effect of cleaning water containing bubbles may be reduced.

  This invention is made | formed in view of the said conventional subject, Comprising: It aims at providing the washing water discharge apparatus which can discharge the washing water with a high cleaning effect containing many bubbles.

  In order to solve the above-described problem, the cleaning water discharge device according to claim 1 includes a cleaning water flow path 5 having a discharge port 6 provided at the downstream end, a throttle portion 43 provided in the middle of the cleaning water flow path 5 and the throttle The inner surface of the portion 43 is made into a throttle surface 44 whose diameter gradually decreases toward the downstream side, and gas is mixed into the cleaning water flowing through the cleaning water flow path 5 by the negative pressure generated in the throttle portion 43, thereby containing cleaning water containing gas. In the cleaning water discharge device, a protrusion 61 that disturbs the flow of the cleaning water is provided on the throttle surface 44.

Further, the projection 61 was formed over the circumferential direction of the stop surface 44, the radius of the flow path of the portion of the projecting length a ₁ of the stop surface 44 provided with the projection 61 of the projections 61 (= a _4/2 ) Of 9 to 15%.

  In the present invention, by providing a protrusion that disturbs the flow of the cleaning water on the throttle surface, when discharging the cleaning water from the discharge port, the void rate can be increased by increasing the flow rate of the gas mixed from the gas mixing part, The washing effect of washing water can be enhanced.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  As shown in FIG. 2, the cleaning water discharge device 1 according to an example of the present embodiment is provided on the sink 2 and discharges cleaning water containing bubbles and detergent into a kitchen sink 3.

  As shown in FIG. 3, the cleaning water discharge device 1 includes a cleaning water flow path 5 having a discharge port 6 provided at the downstream end. The washing water channel 5 is constituted by a channel branched from a water supply pipe that supplies tap water to the beverage currant 4, and discharges tap water supplied from the water supply pipe using tap water as washing water.

  The upstream side of the water supply pipe is connected to a water heater (not shown) so that warm water can be supplied to the cleaning water passage 5 as cleaning water.

  An upstream portion 17 of the washing water channel 5 is passed through the sink 2. The upstream portion 17 is provided with a stop cock 7, a check valve 8, a constant flow valve 9, and an on-off valve 10 in order from the upstream side. The constant flow valve 9 depressurizes the supplied wash water and sends it to the downstream side with a constant flow rate. The on-off valve 10 is composed of an electromagnetic valve.

  As shown in FIG. 1, the cleaning currant 18 includes a vertical tube portion 19, a horizontal tube portion 20, a connecting tube portion 21, and a discharge portion 22, and is provided in this order from the upstream side.

  The vertical tube portion 19 protrudes upward from the rear edge portion of the sink 3, and the horizontal tube portion 20 protrudes forward from the upper portion of the vertical tube portion 19. The vertical tube portion 19 and the horizontal tube portion 20 are located outside the sink 2. The horizontal tube portion 20 protrudes from the peripheral edge portion of the sink 3 toward the sink 3 in plan view.

  The vertical pipe part 19 and the horizontal pipe part 20 constitute a water supply pipe part. In addition, as a water supply pipe part, it is not limited to this, For example, you may comprise by the horizontal pipe etc. which protrude ahead from the wall part erected in the back of the sink 3. FIG.

  The rear end portion of the connecting tube portion 21 is connected to the front end portion of the horizontal tube portion 20, and the upper end portion of the discharge portion 22 is connected to the front end portion of the connecting tube portion 21. The discharge unit 22 is disposed above the sink 3.

  The discharge part 22 extends downward substantially perpendicular to the connecting pipe part 21, and its lower part protrudes below the horizontal pipe part 20.

  Inside the vertical tube portion 19, the horizontal tube portion 20, the connecting tube portion 21, and the discharge portion 22, a vertical flow channel 23, a horizontal flow channel 24, a connection flow channel 25, and a discharge flow channel 26 are formed. The upstream end of the longitudinal channel 23 is connected to the downstream end of the upstream portion 17, the upstream end of the transverse channel 24 is connected to the downstream end of the longitudinal channel 23, and the downstream end of the transverse channel 24 is connected to the downstream end of the transverse channel 24. The upstream end portion of the discharge flow channel 26 is connected through the connection flow channel 25. The vertical flow path 23, the horizontal flow path 24, the connection flow path 25, and the discharge flow path 26 constitute a downstream portion 27 of the cleaning water flow path 5, and the downstream portion 27 and the upstream portion 17 constitute the cleaning water flow path 5. .

  As shown in FIG. 4, a flow rate adjusting operation section 28 and a discharge switching operation section 29 are provided on the outer surface of the lower portion of the vertical pipe section 19. The flow rate adjusting operation unit 28 and the discharge switching operation unit 29 are electrically connected to the control unit 70.

  When the flow rate adjusting operation unit 28 is operated, the control unit 70 changes the opening degree of the flow rate adjusting valve 11. Thereby, the discharge amount of cleaning water can be adjusted. When the discharge switching operation unit 29 is operated, the control unit 70 switches between opening and closing of the on-off valve 10. Thereby, the presence or absence of discharge of cleaning water can be switched.

  As shown in FIG. 5 (a), the discharge part 22 is connected to the downstream end of the connecting pipe part 21 and the downstream part is bent downward, and the discharge part 22 is detachable from the nozzle 34. It has a substantially cylindrical outer shape that is long in the vertical direction. In addition, although the discharge part 22 was made into the substantially column shape in this example, a substantially prismatic shape etc. may be sufficient.

  The nozzle 34 includes an upstream tube 36, a downstream tube 37, and a nozzle tip 38, and is provided in this order from the upstream side (upper side). A discharge port 6 is formed in the lower end surface portion of the nozzle tip portion 38.

  The upstream pipe body 36 includes an upstream pipe 45 bent in a substantially L shape and a throttle pipe 46 with a narrowed tip on the downstream side, and is bent in an L shape as a whole. A front end portion of the connecting tube portion 21 is connected to an upstream end portion protruding rearward of the upstream tube 45, and a downstream end portion of the upstream tube 45 is inserted and connected to the upper portion of the throttle tube 46 from above. The lower end portion of the throttle tube 46 is inserted and connected to the upper end portion of the downstream tube body 37, and the upstream tube body 36 and the downstream tube body 37 constitute an L-shaped tube portion 68 bent in an L shape.

  As shown in FIG. 6, the throttle tube 46 is formed with a throttle portion 43 having a tapered throttle surface 44 whose inner surface gradually decreases in diameter toward the downstream side.

  As shown in FIG. 5, the downstream end of the throttle pipe 46 that is continuous with the throttle section 43 is an outlet 49 that discharges wash water to the downstream pipe body 37. The inner diameter of the upper part 49a of the outlet 49 is constant in the flow direction of the washing water. The lower part 49b of the outflow port 49 has a trumpet-shaped inner surface whose inner diameter increases toward the downstream side.

  By providing the throttle part 43, the upper part of the downstream pipe body 37 located on the downstream side serves as a negative pressure generating part 47 that generates a negative pressure when washing water flows.

  In the portion corresponding to the negative pressure generating portion 47 of the downstream pipe body 37, the gas mixing portion 13 is formed which is a hole that allows the negative pressure generating portion 47 to communicate with the outside.

  When washing water flows through the washing water flow path 5 and a negative pressure is generated in the negative pressure generating unit 47, the gas (air) is supplied from the gas mixing unit 13 to the washing water and mixed by the negative pressure.

  On the downstream side of the gas mixing part 13 of the downstream pipe body 37, a pressure reducing / pressurizing part 53 whose flow path area changes in the flow direction of the cleaning water is formed. The decompression / pressurization unit 53 is configured by a decompression unit 54, a small diameter unit 55, and a pressurization unit 56, which are formed in a venturi shape and are arranged in order from the upstream side.

  The flow path diameter of the decompression unit 54 gradually decreases toward the downstream side. The small diameter portion 55 is continuous with the decompression portion 54 and has the same flow path diameter as the flow passage diameter at the downstream end of the decompression portion 54. The pressure portion 56 has a channel diameter that gradually increases toward the downstream side of the small diameter portion 55.

  The downstream pipe body 37 is formed with a detergent supply section 14 that is formed with a hole communicating with the decompression section 54 of the cleaning water flow path 5 and to which detergent is supplied from the detergent tank 35.

  When cleaning water is flowing through the cleaning water flow path 5 in a state where the detergent tank 35 and the detergent supply unit 14 are in communication with each other, negative pressure is generated in the decompression unit 54 and the detergent in the detergent tank 35 causes the detergent supply unit 14 to flow. And mixed with washing water containing air bubbles. In addition, in this example, although the detergent supply part 14 was provided in the downstream rather than the gas mixing part 13, you may provide in an upstream. Further, the detergent supply unit 14 may be provided in a portion corresponding to the negative pressure generation unit 47 instead of the decompression unit 54.

  When the washing water passes through the pressure reducing / pressurizing unit 53, a pressure fluctuation is generated, and the bubbles made of air mixed in the washing water in the gas mixing unit 13 are sheared and refined. That is, the depressurizing / pressurizing unit 53 constitutes a means for refining bubbles contained in the cleaning water.

  The nozzle tip portion 38 constitutes the lower end portion of the discharge portion 22. The nozzle tip portion 38 has a cylindrical outer shape having a larger diameter than the L-shaped tube portion 68. A plurality of holes (not shown) for discharging the cleaning water in a shower shape are formed in the lower end surface portion of the nozzle tip portion 38, and the discharge port 6 is constituted by these many holes. An enlarged flow channel 48 having a diameter larger than that of the downstream tube 37 and communicating with the discharge port 6 is formed inside the lower portion of the nozzle tip portion 38.

  An insertion hole portion 51 that opens upward is formed at the rear portion of the nozzle tip portion 38, and a communication hole 52 that communicates with the enlarged flow path 48 is formed at the lower end portion of the insertion hole portion 51.

  The downstream tube body 37 is inserted into the insertion hole 51 and communicates with the enlarged flow channel 48 through the communication hole 52 facing the lower end opening of the downstream tube body 37. As a result, the flow path 50 formed by the L-shaped tube portion 68, the communication hole 52, the enlarged flow path 48, and the discharge flow path 26 including the discharge port 6 are formed.

  When discharging cleaning water containing bubbles and detergent using the cleaning water discharge device 1, with the stop cock 7 open, the discharge switching operation unit 29 is operated to open the on-off valve 10 and supply detergent. The switching operation unit 66 is operated to open the switching valve 65.

  As a result, the cleaning water supplied from the water supply pipe to the cleaning water flow path 5 is mixed with gas at the gas mixing section 13 of the discharge section 22 and mixed with detergent at the detergent supply section 14 to reduce pressure and pressure. Wash water containing fine bubbles and detergent through the section 53 is discharged from the discharge port 6 toward the lower sink 3 in a shower shape.

  Thus, since the discharged washing water contains a large number of fine bubbles and detergent, the washing effect is high, and it is possible to clean objects to be washed such as dishes.

  When discharging cleaning water that does not contain detergent, with the stop cock 7 open, the discharge switching operation unit 29 is operated to open the on-off valve 10 and the detergent supply switching operation unit 66 is operated. Then, the switching valve 65 may be closed, and in this case, the consumption of detergent can be suppressed.

  Here, as shown in FIG. 7, a protrusion 61 that disturbs the flow of the cleaning water is provided on the throttle surface 44 of the throttle part 43 located on the upstream side of the gas mixing part 13. The two-dot chain line shown in FIG. 7 will be described later.

The protrusion 61 is formed integrally with the downstream end of the diaphragm surface 44 in the circumferential direction. The upstream end surface of the protrusion 61 is a surface perpendicular to the flow direction of the cleaning water. Diameter a ₄ inside which is formed in the flow path of the projection 61 is constant in the flow direction of the washing water (the axial direction of the choke pipe 46), and is the same as the inner diameter of the upper 49a of the outlet 49.

Projecting length _{a 1} of the stop surface 44 of the projection 61 shown in FIG. 7 in _{a 1} is set to 9-15% of the dimension of the radius of the flow path of the portion provided with projections 61 _{(i.e., a} 4/2) Then, the amount of gas mixed from the gas mixing unit 13 is particularly increased and preferable.

  FIG. 8 shows a result of a comparative experiment between the cleaning water discharge device 1 of this example and the cleaning water discharge device not provided with the protrusion 61 shown by the two-dot chain line in FIG. 5 is a graph showing the relationship between the flow rate of cleaning water flowing through the air, the intake air flow rate of air from the gas mixing unit 13, and the void ratio representing the rate of bubbles in the discharged water.

Specifically, the wash water discharging device 1 of this embodiment, _a 1 to 4 shown in FIGS. 6 and _7, b 1 to _3, the respective _{c 1~2, a 1 = 0.225mm,} a 2 = _{0.84mm, a 3 = 3.55mm, a} 4 = 3.1mm, b 1 = 4.11mm, b 2 = 1.94mm, b 3 = 2.16mm, c 1 = 8.8mm, c 2 = 9 .8mm is set.

  Note that the difference between the cleaning water discharge device 1 of this example in the comparative experiment and the cleaning water discharge device to be compared is only the presence or absence of the protrusion 61, and all other points have the same configuration and the same conditions. Above comparative experiments were performed.

  As is clear from FIG. 8, when the protrusion 61 that disturbs the flow of the cleaning water is provided on the throttle surface 44, when discharging the cleaning water, the flow rate of the gas mixed from the gas mixing unit 13 is increased to increase the void ratio. Can be increased. For this reason, the cleaning effect of cleaning water can be further enhanced.

1 is a side sectional view of a cleaning currant, showing an example of a cleaning water discharge device according to an embodiment of the present invention. It is a perspective view of the sink provided with the washing water discharge device same as the above. It is explanatory drawing of a washing water discharge apparatus same as the above. It is a perspective view of the washing | cleaning currant same as the above. (A) is a sectional side view of the same discharge part, (b) is an AA sectional view of (a). It is a sectional side view of a throttle tube same as the above. It is an expanded sectional view of the front-end | tip part of a throttle tube same as the above. It is a graph which shows the relationship between the flow volume of the washing water of the comparative experiment result of the washing water discharge apparatus same as the above, and the washing water discharge apparatus without a protrusion, an intake air flow rate, and a void ratio.

Explanation of symbols

5 Washing water flow path 6 Discharge port 43 Restriction part 44 Restriction surface 61 Projection

Claims (2)

  Provided with a washing water flow path provided with a discharge port at the downstream end, provided with a throttle part in the middle of the washing water flow path, and the inner surface of the throttle part as a throttle surface whose diameter gradually decreases toward the downstream side. A cleaning water discharge device that discharges cleaning water containing gas by mixing gas into the cleaning water flowing through the cleaning water flow path due to the negative pressure, wherein a protrusion that disturbs the flow of cleaning water is provided on the throttle surface. A cleaning water discharge device.   The protrusion is formed in the circumferential direction of the diaphragm surface, and the protrusion length of the protrusion from the diaphragm surface is 9 to 15% of the radius of the flow path of the portion where the protrusion is provided. Item 4. A cleaning water discharge device according to Item 1.

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