JP5583373B2 - Mist shower head - Google Patents

Description

  The present invention relates to a mist shower head that ejects a mist flow in which a pressurized gas such as pressurized air and a liquid such as water are mixed.

  Conventionally, a shower head has been devised to increase the cleaning power with a small amount of water by mixing pressurized air with water or hot water to form a mist. A shower head has been devised.

  The shower head described in Patent Document 1 has a truncated cone portion (41) in which a discharge hole (41a) for ejecting the first mist flow is formed in a conical shape, and the discharge hole (41a) is a truncated cone. It arrange | positions concentrically at a part (41). Further, the second mist flow is prevented from diffusing from the discharge hole (42a) formed in the horizontal portion (42) disposed on the outer peripheral portion of the frustoconical portion (41). A mist flow is ejected. Moreover, the discharge hole (42a) which ejects a 2nd mist flow is opening in the storage space (G) in which a mist flow is stored. In addition, the code | symbol in a parenthesis is what was described in the gazette of the said patent document 1. FIG.

JP 2007-326082 A WO97 / 16105 Publication JP-A-11-262457 JP 2000-204614 A JP 2007-20854 A

  However, in the shower head described in Patent Document 1, the truncated cone part (41) in which the discharge hole (41a) is formed is conical, and is concentrically formed on the truncated cone part (41) having a conical shape. Since the discharge holes (41a) are formed, the concentration points of the first mist flow are arranged in the same number of concentric circles along the jet direction of the jet. As described above, since the concentration points of the first mist flow are dispersed in a plurality, even if the introduction pressure of the pressurized fluid varies, the variation of the ejection pressure at each concentration point is also dispersed. In addition, a discharge hole (42a) for ejecting the second mist flow is opened in the storage space (G) in which the mist flow is stored. Therefore, it did not become a problem when there was a change in the introduction pressure of the pressurized fluid.

  The present invention has been made in view of the circumstances as described above, and when there is a fluctuation in the supply pressure of the pressurized mist flow, the pressure fluctuation is absorbed and the mist flow is ejected at a stable injection pressure. The purpose is to provide a mist shower head that can be used.

In order to achieve the above object, the mist shower head of the present invention includes an introduction path for introducing a pressurized fluid in which pressurized air and water are mixed,
A storage chamber for temporarily storing the pressurized fluid in communication with the introduction path;
A nozzle plate provided with a nozzle for ejecting the pressurized fluid in the storage chamber toward the object to be cleaned ;
A partition plate that forms the storage chamber with the nozzle plate;
A buffer chamber communicating with the storage chamber through two communication ports formed in the partition plate ;
Each nozzle of the nozzle plate is formed so as to concentrate the mist flow ejected from each nozzle in one place,
When the introduction pressure of the pressurized fluid fluctuates , the buffer chamber moves back and forth between the buffer chamber and the storage chamber via the two communication ports. to that absorb the fluctuations to reduce the influence of the variation in the ejection pressure of the mist stream to concentrate at one position being ejected from the nozzle and spirit.

That is, according to the present invention, each nozzle of the nozzle plate is formed so as to concentrate the mist flow ejected from each nozzle in one place, communicates with the storage chamber, and the introduction pressure of the pressurized fluid varies. A buffer chamber is provided to reduce the influence of the mist flow that is sometimes ejected from the nozzle and concentrated in one place while absorbing the variation in the introduction pressure. Thus, since each nozzle is formed on, for example, a concave surface so that the mist flow ejected from each nozzle is concentrated at one location, the concentration is increased when the pressure of the pressurized fluid varies. The influence on the fluctuation of the jet pressure at the point becomes large. Therefore, a buffer chamber is provided in order to reduce the influence of fluctuations in the jet pressure of the mist flow ejected from the nozzle and concentrated in one place, and the buffer chamber is a closed space in which no passage for releasing the internal pressure to the outside is provided. As a result, the pressure absorption effect of the buffer chamber was enhanced, and the inconvenience of causing pain when the subject was cleaned and conversely causing insufficient cleaning was solved.

It is a figure which shows 1st Embodiment of the mist shower head to which this invention is applied, (A) is sectional drawing, (B) is the figure seen from the nozzle surface side.

  Next, the best mode for carrying out the present invention will be described.

  FIG. 1 is a diagram showing a first embodiment of a mist shower head to which the present invention is applied.

  The mist shower head of this embodiment includes an introduction path 1 that introduces a pressurized fluid in which pressurized air and water are mixed, a storage chamber 2 that communicates with the introduction path 1 and temporarily stores the pressurized fluid, And a nozzle plate 3 having nozzles 4 for ejecting pressurized fluid in the storage chamber 2 toward the object to be cleaned.

  And each nozzle 4 of the said nozzle plate 3 was formed so that the mist flow ejected from each nozzle 4 might be concentrated on one place, it connected with the said storage chamber 2, and there existed fluctuation | variation in the introduction pressure of a pressurized fluid. A buffer chamber 5 is provided for absorbing the fluctuation of the introduction pressure and reducing the influence of the mist flow that is ejected from the nozzle 4 and concentrated in one place on the fluctuation of the ejection pressure.

  In other words, the mist shower head has the buffer chamber that partitions the internal space of the housing 6 and has the leading end of the introduction pipe 7 having the introduction path 1 connected to the ceiling of the dome-shaped cylindrical housing 6. 5 and a partition plate 8 for forming the storage chamber 2 are arranged. Further, the nozzle plate 3 is disposed in the inner space of the housing 6 on the opening side of the partition plate 8.

  More specifically, the housing 6 has a cylindrical shape, and a fitting hole 9 into which the distal end portion of the introduction tube 7 is fitted is formed in the middle of the ceiling portion. A narrow diameter portion 10 is formed at the tip of the introduction tube 7, and the housing 6 and the introduction tube 7 are connected by fitting the small diameter portion 10 into the insertion hole 9.

  A partition plate 8 is attached to the tip of the introduction pipe 7. The partition plate 8 is opened in an umbrella shape, and the leading end of the introduction tube 7 is attached in an airtight and liquidtight manner to the narrowed central portion, and the open outer periphery is fixed in an airtight and liquidtight manner on the inner peripheral surface of the housing 6. Has been. Furthermore, the outer periphery of the nozzle plate 3 is fixed to the inner peripheral surface of the housing 6 in an airtight and liquid-tight manner on the opening side of the partition plate 8. In this state, the end of the housing 6 on the open side protrudes from the nozzle plate 3 in the mist flow injection direction.

  The leading end opening of the introduction pipe 7 opens into a space formed between the nozzle plate 3 and the partition plate 8, and this space communicates with the introduction path 1 to temporarily store pressurized fluid. It is formed in the storage chamber 2. A space surrounded by the partition plate 8 and the peripheral wall and the ceiling of the housing 6 is formed in the buffer chamber 5.

  The nozzle plate 3 is formed with a concave nozzle surface on the side where a large number of nozzles 4 are formed and the mist flow is ejected. One nozzle 4a is formed at the center of the concave nozzle surface, and two nozzle rows 4b and 4c are formed concentrically around the center nozzle 4a. Each nozzle 4 formed on the concave nozzle surface is formed such that the mist flow ejected from each nozzle 4 is concentrated at one concentrated point O.

  Thereby, the pressurized fluid introduced into the storage chamber 2 from the introduction path 1 is temporarily stored in the storage chamber 2 and then ejected from each nozzle 4. At this time, as described above, the mist flow ejected from each nozzle 4 is concentrated at the concentration point O.

  The partition plate 8 is provided with a communication port 12 that allows the storage chamber 2 and the buffer chamber 5 to communicate with each other. Thereby, since the pressurized fluid can go back and forth between the buffer chamber 5 and the storage chamber 2 through the communication port 12, when the introduction pressure fluctuates in the pressurized fluid introduced into the storage chamber 2 through the introduction path 1. In addition, the pressure fluctuation can be absorbed by the buffer chamber 5. In this way, even if there is a variation in the introduction pressure in the pressurized fluid, it is absorbed, so the variation in the injection pressure of the mist flow concentrated at one concentrating point O does not increase so much, so that a stable feeling of use can be obtained. Can be obtained.

  The buffer chamber 5 is a closed space in which no passage for releasing the internal pressure to the outside is provided. For this reason, the pressure absorption effect of the buffer chamber 5 becomes higher.

  Here, in the conventional shower head described in Patent Document 1, the pressurized fluid is operated at a pressure of 0.5 MPa, an air flow rate of 110 Nl / min, and a water flow rate of about 0.2 Nl / min. In the mist shower head of this embodiment, the pressurized fluid is operated at a pressure of 0.2 MPa, an air flow rate of 70 Nl / min, and a water flow rate of about 1 Nl / min. As described above, the pressurized fluid to be introduced is operated with a pressure of 0.3 MPa or less and an air flow rate / water flow rate ratio of about 100/1 or less.

  In such a pressurized fluid with a relatively low pressure and a large flow rate of water relative to the air flow rate, it is necessary to concentrate the mist flow in one place in order to ensure the cleaning power, so that the introduction pressure of the pressurized fluid varies. The influence on the fluctuation of the jet pressure at the concentration point O increases.

Thus, since each nozzle 4 is formed on, for example, a concave surface so as to concentrate the mist flow ejected from each nozzle 4 in one place, when there is a change in the introduction pressure of the pressurized fluid, The influence on the fluctuation of the ejection pressure at the concentration point O is increased. For this reason, a buffer chamber 5 is provided in order to reduce the influence of fluctuations in the ejection pressure of the mist flow ejected from the nozzle 4 and concentrated in one place. Further, the buffer chamber 5 has a passage for releasing the internal pressure to the outside. By providing a closed space that is not provided, the pressure absorption effect of the buffer chamber 5 is enhanced, and the inconvenience of causing pain when the subject is cleaned or conversely causing insufficient cleaning is solved.

DESCRIPTION OF SYMBOLS 1 Introductory path 2 Storage chamber 3 Nozzle plate 4 Nozzle 4a Nozzle 4b Nozzle row 4c Nozzle row 5 Buffer chamber 6 Housing 7 Introducing pipe 8 Partition plate 9 Insertion hole 10 Small diameter part 12 Communication port O Concentration point

Claims (2)

An introduction path for introducing a pressurized fluid in which pressurized air and water are mixed;
A storage chamber for temporarily storing the pressurized fluid in communication with the introduction path;
A nozzle plate provided with a nozzle for ejecting the pressurized fluid in the storage chamber toward the object to be cleaned ;
A partition plate that forms the storage chamber with the nozzle plate;
A buffer chamber communicating with the storage chamber through two communication ports formed in the partition plate ;
Each nozzle of the nozzle plate is formed so as to concentrate the mist flow ejected from each nozzle in one place,
When the introduction pressure of the pressurized fluid fluctuates , the buffer chamber moves back and forth between the buffer chamber and the storage chamber via the two communication ports. mist shower head is characterized that you absorb the fluctuations to reduce the influence of the variation in the ejection pressure of the mist stream to concentrate at one position being ejected from the nozzle. 2. Each nozzle of the nozzle plate is formed in two rows concentrically, and is formed so as to concentrate the mist flow ejected from the nozzles in each row in one place. Mist shower head.

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