JP2019007664A - Water screen evaporative humidifier - Google Patents

Abstract

To provide a water screen evaporative humidifier excellent in humidification efficiency and less in running cost.SOLUTION: A water screen evaporative humidifier comprises a humidification member (1) configured to humidify ventilation air with water evaporation, and a water supply device (2) configured to supply water to the humidification member (1). The humidification member (1) comprises many water screen holding holes (3) where a water screen is formed by flowing water thereinto, and many clearance parts (4) provided so as to pass the ventilation air along opening surfaces of the water screen holding holes (3). The humidification member (1) comprises many lattice-shaped water flow parts (5). In the water flow part (5), a penetration space formed of a lattice is the water screen holding hole (3), and the water flow parts (5) are adjacently arranged at a clearance through which the ventilation air passes, to form the clearance part (4).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water film vaporizing humidifier.

  A conventional vaporizing humidifier used for an air conditioner includes a penetrating material and a water supply device. When water is infiltrated into the osmotic material with the water supply device and the blast air is brought into contact with the osmotic material, the water oozed out of the osmotic material is vaporized and evaporated and the blast air is humidified. The penetrating material is generally a non-woven fabric or the like formed into a wave shape.

JP 2001-59635 A

  However, the conventional vaporizing humidifier has the following problems. Since the air is brought into contact with the water that oozes from the penetrating material, the time and area of contact are reduced. For this reason, the humidification efficiency (ratio in which vaporized and evaporated water is added to the air) is poor, and the humidification capacity is low. Since it is necessary to increase the contact time and area with the osmotic material, the osmotic material is enlarged and corrugated. Therefore, the air resistance increases and the consumption of blowing energy increases, resulting in an increase in running cost.

  Since the penetrating material is large and corrugated and impurities easily adhere to it, it is difficult to clean the impurities adhering to the penetrating material, and the number of times of washing increases, and a large amount of water is required. Therefore, the effective water supply utilization rate (the ratio of moisture added to the air with respect to the total water supply amount, and the water supply amount for cleaning is also included in the water supply effective utilization rate) is poor, and the running cost is increased. Since water is infiltrated into the permeation material, clogging is likely to occur and the humidification capacity is likely to be reduced.

  In order to solve the above-described problem, the present invention includes a humidifying member that humidifies the blown air by vaporization and evaporation of water, and a water supply device that supplies the water to the humidifying member, and the humidifying member has the water flowing therein. A plurality of water film holding holes for extending the water film, and a large number of gaps provided so that the blown air passes along the opening surface of the water film holding hole. A plurality of sections, and a through space formed by a lattice in the water flow section is used as the water film holding hole, and the gap is formed by arranging the water flow section next to each other with a gap through which the blown air passes. Is the most important feature.

  According to the invention of claim 1, since the blown air contacts the water film exposed in the air, the contact time is long and the contact area is widened. Therefore, the humidification efficiency is good and the humidification capacity is increased. Since the contact area between the water film and the blown air is wide, the humidifying member can be downsized. Since the blown air passes along the opening surface of the water film holding hole, the air resistance is reduced. By reducing the size of the humidifying member and reducing the air resistance, the consumption of blowing energy is reduced and the running cost is reduced.

  Since the water film holding hole in the water flow portion is a through space, both the front and back surfaces of the water film are exposed. This doubles the contact time and contact area between the water film and the blown air, further increasing the humidification capacity. The humidifying member can be configured simply by forming the water flow portion in a lattice shape and providing the water flow portion next to each other with a gap through which the blown air passes. Therefore, manufacture is easy and inexpensive. Impurities are difficult to adhere because the water flow part has a lattice shape with holes. Therefore, cleaning is easy and the number of times of cleaning is small, the water supply effective utilization rate is good, and the running cost is reduced. Since water is not permeated, there is no decrease in humidification capacity. Since the water film is easily stretched even if the water film holding hole is shallow, the water flow portion can be made thin and the air resistance can be reduced.

According to the second aspect of the present invention, the amount of water supplied to the humidifying member (sprayed water amount) can be easily changed by simply switching the main spraying portion and the sub-spraying portion with the switching mechanism. Thereby, humidification capability can be adjusted in multiple steps (for example, 100%, 50%, 0%), and optimal humidification can be performed according to the season and time. Since water is sprayed, a water film can be uniformly applied to the humidifying member. If the spraying of water is a spray type that releases fine water particles, it is possible to vaporize and evaporate both in the water film and in the water fine particles, so that the humidifying efficiency is improved.
According to invention of Claim 3, since water is spread | dispersed toward the airflow center of blowing air in a water spreading part, the bypass of blowing air with respect to a water film can be suppressed. Therefore, there is no humidification unevenness and the humidification ability is stabilized.

According to the fourth aspect of the present invention, for example, water is intermittently sprayed on the humidifying member with a time until the water film in the water film holding hole evaporates and disappears. Thereby, useless water supply decreases and running cost is reduced.
According to the invention of claim 5, since the switching mechanism can be configured by a commercially available three-way valve, the cost is reduced.

It is a perspective view which shows the water film vaporization type humidifier of this invention. (Example 1) It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is an enlarged view of a water flow part. It is a principal part perspective view of a water flow part. It is ZZ sectional drawing of FIG. It is sectional drawing at the time of using two fans. (Example 2)

  1 to 6 show a water film vaporization type humidifier according to the present invention. This water film vaporization type humidifier supplies water to the humidification member 1 and the humidification member 1 for humidifying the blown air by vaporization and evaporation of water. A water supply device 2. This water film vaporizing humidifier is provided in an air conditioner (not shown) to humidify the blown air. In each figure, a thick solid arrow indicates the air flow direction of the blown air blown out by the fan 16.

  The humidifying member 1 includes a large number of water film holding holes 3 through which water flows and stretches the water film, and a large number of gaps 4 provided so that the blown air passes along the opening surfaces of the water film holding holes 3. . The humidifying member 1 includes a large number of grid-shaped water flow portions 5. The through space formed by a lattice in the water flow portion 5 is used as the water film holding hole 3 of the humidifying member 1. The gap portion 4 of the humidifying member 1 is formed by arranging the water flow portions 5 next to each other with a gap through which the blown air passes. The water supply device 2 and the water flow portion 5 of the humidifying member 1 are fixed by a mounting frame (not shown).

  The depth of the water film holding hole 3 (the thickness of the water flow portion 5) is set to 1 to 3 mm. Thereby, a water film is reliably formed in the water film holding hole 3 and the air resistance of the water flow portion 5 is reduced. The opening size of the water film holding hole 3 is set to 2 to 4 mm square. Thereby, since it becomes the dead weight which a water film becomes difficult to tear, the retention time of a water film becomes long, humidification efficiency improves, and useless water supply can be reduced. The water film holding hole 3 is configured such that the contact angle with water is 0 to 45 °. Thereby, wettability (hydrophilicity) can be improved and vaporization evaporation can be promoted. Resin, metal, etc. are used for the material of the water flow part 5. 5A shows a state without a water film, and FIG. 5B shows a state with a water film.

  The water supply device 2 includes a plurality of water spraying units 6 that spray water on the humidifying member 1, a case unit 8 that holds the water spraying unit 6, and a destination of water to be sprayed is one of the plurality of water spraying units 6. A switching mechanism 9 for switching to water, a water amount adjusting mechanism 10 for adjusting the humidifying capacity by changing the amount of water supplied to the water spraying unit 6, and the water spraying unit 6, the switching mechanism 9 and the water amount adjusting mechanism 10 are connected to send water. The piping part 11 and the control part 12 which operates the water quantity adjustment mechanism 10 and sprays water intermittently to the humidification member 1 are provided. The control unit 12 includes a microprocessor and other control devices.

  The case portion 8 is provided with an opening 13 so that the humidifying member 1 is exposed in the case portion 8. The water spray unit 6 includes a water pipe 15 and a nozzle 7 that sprays water from the water pipe 15 toward the water flow part 5 of the humidifying member 1. A plurality of nozzles 7 are arranged at intervals. The nozzle 7 is preferably a spray type, but may have a structure other than this. Moreover, the change of the average particle diameter of the sprayed water is free. In the illustrated example, two water spraying portions 6 are provided, the water amount adjusting mechanism 10 is configured by a two-way valve, and the switching mechanism 9 is configured by a three-way valve.

  The control unit 12 of the water supply device 2 opens and closes the two-way valve (water amount adjustment mechanism 10) and switches the three-way valve (switching mechanism 9) according to the required humidification amount, and then switches to one of the water spraying units 6. Send water. The water sent through the water supply pipe 15 is uniformly sprayed from the nozzle 7 of the water spraying unit 6 to the humidifying member 1 and stretches the water film in the water film holding hole 3 while flowing down the water flow part 5 of the humidifying member 1. When the blown air passes through this water film through the gap (gap portion 4) of the water flow portion 5, water evaporates and evaporates. This humidifies the blown air. The water that has flowed down the water flow part 5 without being vaporized flows down to the water receiving part 14 and is drained.

  FIG. 6 shows an example when the number of fans 16 is one. The plurality of water spraying units 6 includes a main spraying unit 6 a that supplies water to the entire area of the humidifying member 1 and a sub-spreading unit 6 b that supplies water locally to the humidifying member 1. The water spraying unit 6 (the sub-spraying unit 6b in the example) is arranged so as to spray water toward the center of the airflow of the blown air passing through the humidifying member 1. The inside of the case portion 8 is divided into three by the partition member 17 to prevent water from entering between the divided portions. The water sprinkling member 7 is arrange | positioned for every division part. The main spraying part 6a is disposed across three sections, and the sub-spreading part 6b is disposed in the center partitioning part.

  FIG. 7 shows an example in which there are two fans 16. The inside of the case part 8 is divided into two by the partition member 17, and the water sprinkling member 7 is arrange | positioned for every division part. The main spraying portion 6a is disposed across two sections, and the sub-spreading section 6b is disposed in one partition section. The water spraying unit 6 (the sub-spraying unit 6b in the illustrated example) is arranged so as to spray water toward the center of the airflow of the blown air blown out by the one fan 16. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In addition, this invention is not limited to the above-mentioned Example. Although not shown in the drawings, the number of the water spraying units 6 is two, but may be three or more. It is also free to change the arrangement of the sub-spreading unit 6b. The water amount adjusting mechanism 10 and the switching mechanism 9 may be composed of valves other than the two-way valve and the three-way valve, or may be composed of only the two-way valve.

DESCRIPTION OF SYMBOLS 1 Humidification member 2 Water supply apparatus 3 Water film holding hole 4 Gap part 5 Water flow part 6 Water spraying part 6a Main spraying part 6b Subspraying part 9 Switching mechanism 10 Water quantity adjustment mechanism 12 Control part

Claims (5)

  A humidifying member (1) for humidifying blown air by vaporization and evaporation of water; and a water supply device (2) for supplying the water to the humidifying member (1), wherein the humidifying member (1) A large number of water film holding holes (3) that flow in and stretch the water film, and a large number of gaps (4) provided so that the blown air passes along the opening surface of the water film holding hole (3). The humidifying member (1) includes a large number of lattice-shaped water flow portions (5), and a through space formed by a lattice in the water flow portion (5) serves as the water film holding hole (3). A water film vaporizing type humidifier characterized in that the gap (4) is formed by arranging the water flow part (5) next to each other with a gap through which the water flows.   The water supply device (2) includes a plurality of water spraying units (6) for spraying the water on the humidifying member (1), and a destination of the water to be sprayed is one of the plurality of water spraying units (6). A switching mechanism (9) for switching between the main spraying part (6a) for spraying the water over the entire area of the humidifying member (1), and the humidifying member (9). The water film vaporizing humidifier according to claim 1, comprising: a sub-spreading unit (6b) that sprays the water locally in 1).   The water film vaporizing humidifier according to claim 2, wherein the water spraying part (6) is disposed so as to spray the water toward a center of an air flow of the blown air passing through the humidifying member (1).   The water supply device (2) operates the water amount adjusting mechanism (10) for adjusting the humidifying capacity by changing the amount of water supplied to the water spraying section (6), and the humidifying member by operating the water amount adjusting mechanism (10). The water film vaporizing humidifier according to claim 2 or 3, further comprising a control unit (12) that intermittently sprays the water into (1).   The water film vaporizing humidifier according to any one of claims 2 to 4, wherein the switching mechanism (9) is constituted by a three-way valve.

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