阅读说明：本技术 雾发生装置 (Mist generating device ) 是由 林义久 于 2020-02-18 设计创作，主要内容包括：本发明提供一种雾发生装置,可防止装置故障并使叶轮以所需速度恒定旋转,得到所需直径的雾。雾发生装置包括：具有水槽(12)的壳体(11)、用于加热该水槽内的水的加热器(19)、设置在壳体内沿铅直方向延伸的轴部(13)、与轴部连接的电动机(13c)、配设在轴部上可在电动机的作用下以该轴部为旋转轴在水平方向上旋转的叶轮(14)、对叶轮喷射水槽的水的喷嘴(15)、以及将水槽的水输送至喷嘴的泵(21)。叶轮沿该叶轮的旋转方向配置,包括被从喷嘴射出的水冲击的多个叶片板(14a),构成为通过从喷嘴射出的水冲击叶片板,水被粉碎而生成雾。在壳体上设置有用于将该壳体内生成的雾排出该壳体外的雾排出口(18)。(The invention provides a mist generating device, which can prevent the device from failure and make an impeller rotate at a required speed to obtain mist with a required diameter. The mist generating device includes: the water tank heating device comprises a housing (11) having a water tank (12), a heater (19) for heating water in the water tank, a shaft portion (13) provided in the housing and extending in a vertical direction, a motor (13c) connected to the shaft portion, an impeller (14) disposed on the shaft portion and rotatable in a horizontal direction with the shaft portion as a rotation shaft by the motor, a nozzle (15) for spraying water in the water tank to the impeller, and a pump (21) for delivering the water in the water tank to the nozzle. The impeller is arranged along the rotation direction of the impeller, comprises a plurality of blade plates (14a) which are impacted by the water emitted from the nozzle, and is configured to generate fog by crushing the water through the impact of the water emitted from the nozzle on the blade plates. The housing is provided with a mist discharge port (18) for discharging the mist generated in the housing to the outside of the housing.)

1. A mist generating device is characterized in that,

the mist generating device includes:

a housing having a water tank for storing water;

a heater provided in the water tank for heating water in the water tank;

a shaft portion provided in the housing and extending in a vertical direction;

a motor connected to the shaft portion;

an impeller disposed on the shaft portion and rotatable in a horizontal direction with the shaft portion as a rotation axis by the motor;

a nozzle that ejects water of the water tank against the impeller; and

a pump for delivering the water from the water tank to the nozzle;

the impeller includes:

a plurality of vane plates disposed along a rotation direction of the impeller and impinged by the water emitted from the nozzle; and

an upper plate and a lower plate respectively positioned at the upper end and the lower end of the plurality of blade plates and arranged by clamping the plurality of blade plates;

the impeller is configured to: the water is pulverized to generate mist by the water ejected from the nozzle hitting the vane plate,

the housing is provided with a mist discharge port for discharging the mist generated in the housing to the outside of the housing.

2. Mist generating device according to claim 1,

the opening diameter of the nozzle is more than 5 mm.

3. Mist generating device according to claim 1 or 2,

an outside air introducing port for introducing outside air into the housing is provided on the housing, an outside air introducing mechanism for actively introducing outside air into the housing is provided at the outside air introducing port,

an opening diameter of the mist discharge port is smaller than an opening diameter of the outside air introduction port, and the mist discharge port is configured to: the inside of the housing may be pressurized by positively introducing an external gas into the housing by the external gas introduction mechanism.

4. Mist generating device according to any one of claims 1 to 3,

an opening is provided in the center of the upper plate or the lower plate.

Technical Field

The present invention relates to a mist generating device, and more particularly to a mist generating device used in mist saunas (mist bathing), hand and foot mist baths (mist bath) for the elderly or patients, and the like.

Background

It is known that when bathing in mist formed by atomizing hot water or water, the mist promotes sweating even at low temperature and promotes blood circulation. It is also known that bathing in such mist can improve metabolism or moisturize the skin. In particular, it is useful for the elderly who are bedridden and cannot bath, or the whole body of the patient, or the parts such as the hands and the feet, to have a body and mind relaxing effect. In addition, when the mist has a large particle size, the mist contacting the human body adheres to each other to form water droplets having a large particle size, and the skin is sticky and gives a feeling of discomfort, or the effect of the mist bath is reduced. Therefore, it is seen that it is preferable to reduce the particle size of the mist as much as possible.

Various devices for realizing mist bath have been proposed. For example, patent documents 1 and 2 disclose a mist generating device including an impeller in which a plurality of vane plates are annularly arranged so as to traverse a rotational direction, and mist having a small particle diameter is generated by a jet flow ejected from a plurality of nozzles striking the vane plates. In this mist generating apparatus, water in a water tank provided in the apparatus is heated by a heater, and hot water in the water tank is ejected from the nozzle. This can produce mist having a small particle size and a high temperature suitable for mist bath.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 6345065

Patent document 2: japanese patent No. 6118563

Disclosure of Invention

Problems to be solved by the invention

However, in the mist generating devices disclosed in patent documents 1 and 2, since the impeller is driven to rotate by the water ejected from the nozzle hitting the vane plate of the impeller, it is necessary to eject the water from the nozzle with strong potential energy, and therefore, a pump capable of generating strong pressure is required, and the diameter of the nozzle needs to be reduced. Accordingly, a pump having high performance is required, which may increase the cost, and the nozzle has a small diameter, which may cause a failure due to clogging with dust or the like, or may force the user to frequently perform maintenance.

Further, since the rotation of the impeller is driven by the impact of the water injected from the nozzle, it is difficult to maintain the rotation speed of the impeller constant due to the pump pressure for injecting the water, the load applied to the rotation shaft of the impeller, and the like. The diameter of the obtained mist varies depending on the rotation speed of the impeller, and therefore it is difficult for the mist generating devices of patent documents 1 and 2 to stably obtain mist of a desired particle diameter.

The present invention has been made in view of the above problems, and an object thereof is to prevent a failure of the device and to enable the impeller to be constantly rotated at a desired speed to obtain mist of a desired diameter.

Solutions for solving problems

In order to achieve the above object, the present invention provides a mist generating device including a motor for rotating an impeller.

Specifically, the mist generating device of the present invention includes: a housing having a water tank for storing water; a heater provided in the water tank for heating water in the water tank; a shaft portion provided in the housing and extending in a vertical direction; a motor connected to the shaft portion; an impeller disposed on the shaft portion and rotatable in a horizontal direction with the shaft portion as a rotation axis by the motor; a nozzle that ejects water of the water tank against the impeller; and a pump for delivering the water from the water tank to the nozzle. The impeller includes: a plurality of vane plates disposed along a rotation direction of the impeller and impinged by the water emitted from the nozzle; and an upper plate and a lower plate respectively positioned at the upper end and the lower end of the plurality of blade plates and arranged by clamping the plurality of blade plates. The impeller is configured to: by the water ejected from the nozzle hitting the vane plate, the water is pulverized to generate mist. The housing is provided with a mist discharge port for discharging the mist generated in the housing to the outside of the housing.

According to the mist generating apparatus of the present invention, the motor is connected to the shaft portion, and the impeller is provided so as to be rotatable in the horizontal direction by the motor with the shaft portion as a rotation axis, so that the impeller can be rotated without depending on the water ejected from the nozzle. Thus, the impeller can be rotated at a desired rotational speed by the motor. Thus, mist of a desired diameter can be stably generated without reducing the opening diameter of the nozzle or generating a large pressure in a pump for supplying water to the nozzle. In addition, since it is not necessary to reduce the opening diameter of the nozzle as described above, it is possible to prevent dust or the like from clogging the nozzle to cause malfunction or increase the number of maintenance times.

Preferably, in the mist generating apparatus according to the present invention, an opening diameter of the nozzle is 5mm or more.

Thus, as described above, clogging of the nozzle by dust or the like can be effectively prevented, and the apparatus can be prevented from malfunctioning or the like, thereby facilitating maintenance.

Preferably, in the mist generating apparatus according to the present invention, the housing is provided with an external air introduction port for introducing external air into the housing, the external air introduction port is provided with an external air introduction mechanism for actively introducing external air into the housing, an opening diameter of the mist discharge port is smaller than an opening diameter of the external air introduction port, and the mist discharge port is configured to: the inside of the housing may be pressurized by positively introducing an external gas into the housing by the external gas introduction mechanism.

Thus, since the outside air is positively introduced into the device by the outside air introducing mechanism and the opening diameter of the mist discharge port is smaller than that of the outside air introducing port, the pressure in the housing of the device can be raised. Therefore, vaporization of the mist can be prevented, the heat quantity of the mist can be increased, and as a result, a decrease in the temperature of the mist flow discharged from the device can be suppressed. As a result, a mist suitable for a mist bath with a high temperature and a small particle diameter can be obtained without requiring a complicated structure or an increase in cost.

Preferably, the mist generating device of the present invention is provided with an opening in the center of the upper plate or the lower plate.

Thus, an air current flowing from above or below the impeller to the outside of the impeller via the inside of the impeller can be generated by the rotation of the impeller, so that the generated mist can be appropriately diffused from the impeller.

Effects of the invention

According to the mist generating device of the present invention, it is possible to prevent the malfunction of the device parts and to constantly rotate the impeller at a desired speed, thereby obtaining mist of a desired diameter.

Drawings

Fig. 1 is an exploded perspective view showing a mist generator according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view showing a mist generator according to an embodiment of the present invention.

Fig. 3 is a schematic diagram for explaining a mist generating mechanism in the mist generating device according to the embodiment of the present invention.

Fig. 4 is a schematic view showing a usage form of the mist generator according to the embodiment of the present invention.

Fig. 5 is a longitudinal sectional view showing a mist generator according to a modification of the embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

A mist generating device according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, the mist generator 10 according to the present embodiment includes a housing 11 including a main body portion 11a and a lid portion 11 b. The lid 11b is detachably attached to the body 11a by screws or the like. A water tank 12 for storing water is provided in the housing 11. The water tank 12 is provided with a shaft portion 13 extending in the vertical direction, an impeller 14 disposed so as to be rotatable in the horizontal direction with the shaft portion 13 as a rotation axis, and a nozzle 15 for jetting water in the water tank 12 against the impeller 14. Further, an outside air introducing port 16 for introducing outside air into the casing 11 is provided in the lid portion 11b of the casing 11, and a fan 17 is provided as an outside air introducing means for actively introducing outside air into the casing 11 at the outside air introducing port 16. Further, the lid 11b is provided with a mist discharge port 18 for discharging the mist generated in the housing 11 to the outside of the housing 11.

The water tank 12 is provided with a heater 19 for heating the stored water and a float switch 20 for detecting whether or not a predetermined amount of water is stored in the water tank 12. The water in the water tank 12 is heated by a heater 19, and the heated water is discharged from the nozzle 15 by a pump 21 provided in the housing 11. Specifically, a suction hose 23 connected to the water tank 12 via a suction hole 22 provided in the bottom of the water tank 12 and a delivery hose 24 connected to the nozzle 15 are connected to the pump 21. Therefore, the mist generator 10 is configured such that the water in the water tank 12 is sucked from the suction hose 23 through the suction hole 22 by the operation of the pump 21 and is ejected from the nozzle 15 through the delivery hose 24. In the present embodiment, although not shown, a pump for supplying water from a predetermined water source to the water tank 12 may be provided in addition to the pump 21 for supplying water to the nozzle 15. Further, the operation of the pump for replenishing the water tank 12 with water may be controlled based on the detection result of the float switch 20.

Specifically, shaft 13 is composed of a rotating shaft 13a and a bearing 13b, where rotating shaft 13a extends in the vertical direction in water tank 12, and bearing 13b is provided at the bottom and upper portion of water tank 12, respectively, and supports the lower end and upper end of rotating shaft 13a, respectively. The shaft 13 is provided with a motor 13c connected to the rotating shaft 13a to rotate the rotating shaft 13 a. In the present embodiment, the motor 13c is mounted on the bearing portion 13b of the shaft portion 13, but is not limited thereto. In the present embodiment, in order to mount the motor 13c on the bearing 13b, a protruding portion 11c protruding upward is provided at a position of the cover 11b corresponding to the motor 13 c. However, when the motor 13c is disposed at another position where the convex portion 11c is not required, the convex portion 11c is not required. Although not shown, the motor 13c is provided with a control means for controlling the power supply for driving the motor 13c and the rotation speed of the motor 13 c. The rotation direction of the motor 13c may be controlled to be normal rotation or reverse rotation.

An impeller 14 is provided on the rotary shaft 13a of the shaft portion 13, and the impeller 14 is attached to rotate in the horizontal direction in accordance with the rotation of the rotary shaft 13a driven by the motor 13 c. In the present embodiment, two impellers 14 are arranged vertically, and the diameter of the lower impeller 14 is smaller than that of the upper impeller 14. By reducing the diameter of the lower impeller 14, the water level in the water tank 12 can be suppressed from fluctuating due to the rotation of the impeller 14, and the occurrence of abnormal detection of the float switch 20 and the like can be prevented. However, without being limited thereto, the diameter of the upper impeller 14 may be smaller than that of the lower impeller 14, and the upper impeller 14 and the lower impeller 14 may have the same diameter. Further, the number of the impellers 14 is not limited to two, and may be one, or may be three or more.

In the present embodiment, two nozzles 15 are provided at positions corresponding to the vertical positions of the two impellers 14, respectively. The impeller 14 is composed of a plurality of vane plates 14a, and an upper plate 14b and a lower plate 14c, the plurality of vane plates 14a are arranged along the rotation direction of the impeller 14, and the upper plate 14b and the lower plate 14c are respectively positioned at the upper end and the lower end of the plurality of vane plates 14a and arranged to sandwich the plurality of vane plates. Preferably, the vane plates 14a are particularly configured and arranged in a shape capable of promoting the flow of the air flow in the impeller 14 by the rotation of the impeller 14. This makes it possible to positively introduce the outside air into the casing 11 through the outside air introduction port 16, thereby pressurizing the inside of the casing 11. The effect of the pressurization in the housing 11 will be described later.

With the above-described configuration of the mist generating device 10, as shown in fig. 3, when the water is ejected from the nozzle 15 toward the impeller 14 that rotates in the horizontal direction about the rotation shaft 13a as the axis with the rotation of the rotation shaft 13a driven by the motor 13c, the water strikes the vane plate 14a of the impeller 14. The water hitting the vane plate 14a is in the form of a spray including mist and water droplets, and is scattered in all directions. Thereby, mist is generated. At this time, since the rotation shaft 13a of the impeller 14 is restricted to the vertical direction as described above, the centrifugal force acts in the horizontal direction, and therefore the mist having a small diameter is scattered and floated in the water tank 12. On the other hand, the droplets having a large diameter drop to the lower portion of the water tank 12 where the water is stored, and do not scatter upward. As a result, only mist having a small diameter can be selected.

In the present embodiment, it is preferable that an opening is provided in the center of the upper plate 14b of the upper impeller 14 and an opening is also provided in the center of the lower plate 14c of the lower impeller. As described above, the rotation of the impeller 14 generates the airflow toward the impeller 14, specifically, the airflow flowing from the openings above the upper impeller 14 and below the lower impeller 14 to the outside of the impeller 14 through the inside of the impeller 14, and the generated mist can be appropriately diffused from the impeller 14 (see the broken-line arrows in fig. 3).

In the present embodiment, since the impeller 14 is rotated by the motor 13, it is not necessary to reduce the opening diameter of the nozzle, and the opening diameter of the nozzle is preferably, for example, 5mm or more. Thus, the nozzle can be prevented from being clogged with dust, so that the apparatus can be prevented from malfunctioning, and maintenance can be facilitated.

In the mist generating device 10 according to the present embodiment, as described above, since the fan 17 as the external air introducing means is provided at the external air introducing port 16, the external air is introduced into the housing 11 by the operation of the fan 17. As a result, the mist generated and floating in the housing 11 flows by the air flow introduced from the outside air introduction port 16, and is discharged from the mist discharge port 18. In the mist generator 10 according to the present embodiment, the inside of the housing 11 is pressurized by the operation of the fan 17, and particularly, the opening diameter of the mist outlet 18 is smaller than the opening diameter of the outside air inlet 16.

As described above, in the mist generating device 10 according to the present embodiment, the heater 19 is provided in the water tank 12, and the water is heated by the heater 19, so that water vapor exists in the water tank 12. As described above, in the conventional mist generating device, the temperature of the discharged mist stream is lowered by vaporization of the mist. However, since the mist generating apparatus according to the present embodiment is configured to pressurize the inside of the housing 11 as described above, vaporization of the mist can be prevented, the heat of the mist can be increased, and as a result, a drop in the temperature of the mist flow discharged from the apparatus can be suppressed.

In the present embodiment, although not shown, a known power supply or wiring for operating the fan 17, the heater 19, and the pump 21, a temperature setter, a temperature sensor including a thermocouple, or the like can be suitably used.

Next, an example of a usage mode of the mist generator 10 according to the present embodiment will be described with reference to fig. 4. Here, a use mode of the mist generating device 10 for foot mist bath will be described. As shown in fig. 4, the bag 30 for the user to put his foot on is connected to the mist outlet 18 of the mist generating device 10 by a hose 31 so that the mist discharged from the mist outlet 18 is introduced into the bag 30. Thus, the user's feet can be misted with mist having a small particle size. Although the use form for foot bath is shown here, the use form for whole body bath can be also used by changing the size of the bag body 30.

In the mist generating device 10 according to the present embodiment, the outside air inlet 16 and the mist outlet 18 are provided in the lid portion 11b of the housing 11, but may be provided on the body portion 11a side. However, from the viewpoint of preventing the large-diameter mist from reaching the mist discharge port 18, it is preferable that the mist discharge port 18 is provided as far as possible above. Further, the shaft portion 13 is provided with two impellers 14, but the number is not limited to this, and one impeller may be provided, or three or more impellers may be provided. However, the number of nozzles 15 provided corresponds to the number of impellers 14.

Next, a description will be given of a mist generating device 50 according to a modification of the present embodiment. The difference from the mist generating device 10 according to the above-described one embodiment is that the mist generating device 50 according to the present modification is provided with two shaft portions, two impellers are provided on each shaft portion, and two mist discharge ports are provided. The mist generating device 50 according to the present modification will be described below with reference to fig. 5. The same configuration as that of the mist generating device 10 according to the above-described embodiment will not be described.

As shown in fig. 5, in the water tank 52 in the housing 51 of the mist generator 50 according to the present modification, two shaft portions 53 are arranged in the horizontal direction. Further, a motor 53c for rotating a rotating shaft 53a of the shaft 53 is connected to each shaft 53. Two impellers 54 which are rotatable in the horizontal direction are disposed on the two shaft portions 53. Therefore, the nozzles 55 for spraying water to the impellers 54 are provided one at each position corresponding to the impellers 54, and four in total. The four nozzles 55 are connected to a pump 61 provided in the housing 51 via delivery hoses 64, and water is ejected from the four nozzles 55 by the operation of the pump 61. In the present modification, since the number of the impellers 54 is large, the amount of mist generation can be increased.

In the present modification, two mist discharge ports 58 are provided in the lid portion 51b of the housing 51. Thus, one mist generating device 50 can be used by two people at the same time. Even in this case, in the present modification, since the impeller 54 for generating mist is provided in plural as described above, and the amount of mist generation is large, even if mist is discharged from two mist discharge ports 58, the amount of mist discharge from each mist discharge port 58 can be prevented from being reduced.

In the present modification, similarly to the mist generating device 10 according to the above-described one embodiment, the mist generating device 50 according to the present modification is configured such that the inside of the housing 51 is pressurized by the operation of the fan 57, and the opening diameter of the mist discharge port 58 is smaller than the opening diameter of the outside air introduction port 56. In particular, in the present modification, by further increasing the opening diameter of the outside air introduction port 56, the outside air introduction amount can be increased, and even if there are two mist discharge ports 58, the inside of the housing 51 can be pressurized, and sufficient mist can be discharged from the two mist discharge ports 58.

As described above, the mist generating apparatus according to the present invention is useful in that it can prevent the malfunction of the apparatus components and constantly rotate the impeller, thereby obtaining a desired mist.

-description of symbols-

10. 50: mist generating device

11. 51: shell body

12. 52: water tank

13. 53: shaft part

13c, 53 c: electric motor

14. 54: impeller

15. 55: nozzle with a nozzle body

16. 56: external gas introduction port

17. 57: fan with cooling device

18. 58: fog outlet

19. 59: heating device

20. 60: floating switch

21. 61: pump and method of operating the same

22. 62: suction hole

23. 63: suction hose

24. 64: conveying hose