JP2022104480A - Air cleaner - Google Patents

Abstract

To realize an air cleaner capable of sterilizing air efficiently with a simple structure.SOLUTION: An air cleaner 1 comprises an air introduction port 3, an air discharge port 4, and a body part 2 that connects the introduction port 3 and the discharge port 4. The body part 2 comprises a plurality of cylinders 21, 22 arranged in parallel. In each of the cylinders 21, 22, a circular tubular ultraviolet light source is arranged at a position concentric or substantially concentric with the cylinders 21, 22.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air purifier.

Conventionally, a device for irradiating air with ultraviolet rays has been known in order to utilize the bactericidal action of ultraviolet rays. For example, Patent Document 1 discloses a sterilization module that sterilizes a fluid such as air by irradiating a fluid flowing into the main body portion with ultraviolet rays from a light source arranged at an end portion of the main body portion.

Japanese Unexamined Patent Publication No. 2019-188127

Since the sterilization module described in Patent Document 1 employs a complicated structure for controlling the flow velocity of the fluid in the main body, the manufacturing man-hours are large and it is difficult to reduce the size.
The present invention has been made in view of the above circumstances, and an object of the present invention is to realize an air purifier capable of efficiently sterilizing air with a simple structure.

In order to achieve the above object, the present invention includes an air introduction port, an air discharge port, and a main body portion connecting the introduction port and the discharge port, and the main body portion includes a cylinder. It is characterized in that a circular tubular ultraviolet light source is arranged on the cylinder at a position concentric with or close to the cylinder.

In the air purifier, the main body may be provided with a plurality of the cylinders in parallel, and the ultraviolet light source may be arranged in each of the cylinders at a position concentric with or close to the cylinder.

In the air purifier, one end of each of the main body portions may be connected to the introduction port, and the other end may be connected to the discharge port.

In the air purifier, an introduction port case connected to each of the cylinders is provided, the introduction port case is provided with a blower fan, and air introduced from the introduction port by the blower fan passes through the introduction port case. It may be configured to flow into the cylinder.

In the air purifier, the main body includes a first cylinder and a second cylinder, one end of the first cylinder communicates with the introduction port, and one end of the second cylinder communicates with the discharge port. , The first cylinder and the second cylinder may be connected to each other.

The air purifier may be provided with the stainless steel cylinder, and the inner surface of the cylinder may be a mirror surface.

In the air purifier, the ultraviolet light source is a straight tube type ultraviolet lamp, and one or a plurality of the ultraviolet light sources may be arranged along the axial direction of the cylinder.

According to the present invention, the air introduced from the introduction port and discharged from the discharge port is irradiated with ultraviolet rays by an ultraviolet light source arranged concentrically with or near the concentric position of the main body. As a result, the air flowing around the ultraviolet light source can be efficiently sterilized by the air purifier having a simple structure.

It is a perspective view of the air purifier of 1st Embodiment. It is an exploded perspective view of an air purifier. It is a perspective view of the main part of the air purifier. It is a breaking perspective view in the line AA of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a figure which shows another installation example of an air purifier. It is a perspective view of the air purifier of the 2nd Embodiment. It is a perspective view of the air purifier of the 3rd Embodiment. It is a perspective view of the air purifier of 4th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a perspective view showing an installed state of the air purifier 1 according to the first embodiment to which the present invention is applied.

The air purifier 1 has a main body portion 2, an introduction port 3 provided at one end of the main body portion 2, and a discharge port 4 provided at the other end of the main body portion 2.

In the present embodiment, the main body 2 is composed of a cylinder 21 and a cylinder 22. The cylinders 21 and 22 are arranged in parallel. The cylinders 21 and 22 are, for example, stainless steel pipes having a diameter of 120 mm, and the inner surface thereof is mirror-finished.

As shown in FIG. 1, an introduction port case 31 fixed to the ends of the cylinders 21 and 22 and a stand 33 are arranged in the introduction port 3. The air purifier 1 of the present embodiment is installed vertically so that the cylinders 21 and 22 are substantially perpendicular to the installation surface.

The inside of the introduction port case 31 is a cavity, and the end portion of the cylinder 21 and the end portion of the cylinder 22 are opened in this cavity, respectively. That is, the internal space of the cylinder 21 and the cylinder 22 communicates with the inside of the introduction port case 31.

The stand 33 is in contact with the installation surface of the air purifier 1 and supports the air purifier 1. The stand 33 and the introduction port case 31 are connected by a spacer 32. The spacer 32 forms an opening 30 between the introduction port case 31 and the stand 33. The opening 30 functions as an intake port for allowing outside air to flow into the main body 2.

In the discharge port 4, a discharge port case 41 fixed to the ends of the cylinders 21 and 22, an end plate 42 fixed to the discharge port case 41, and a cover 44 covering the upper part of the end plate 42 are arranged. To.

The inside of the discharge port case 41 is a cavity, and the end portion of the cylinder 21 and the end portion of the cylinder 22 are opened in this cavity, respectively. That is, the internal space of the cylinder 21 and the cylinder 22 communicates with the inside of the discharge port case 41.

The upper end surface of the discharge port case 41 is closed by the end plate 42. An opening is provided in the center of the end plate 42, and a finger guard 43 is installed in this opening. The cover 44 is a plate-shaped member that covers the upper part of the end plate 42 at a position separated from the end plate 42 by a predetermined distance. An opening 40 is formed between the cover 44 and the end plate 42, and the opening 40 functions as an outlet for discharging air from the main body 2.

The air purifier 1 takes in air from the opening 30 into the main body 2, purifies the air with ultraviolet rays in the main body 2, and discharges the purified air from the opening 40.

Here, the purification of air performed by the air purifier 1 includes at least one of eradicating or sterilizing bacteria and inactivating pathogens such as viruses. Disinfection and sterilization refer to reducing at least a part of the bacteria in the air introduced into the main body 2. There is no intention to limit the configuration of the air purifier 1 to a configuration that can achieve complete sterilization. Further, the types of bacteria that can be sterilized or sterilized are not limited. Pathogen inactivation refers to reducing or eliminating pathogenicity and / or infectivity of at least some of the pathogens in the air introduced into body 2. There is no intention to limit the configuration of the air purifier 1 to a configuration that can achieve complete inactivation or complete destruction of pathogens.

FIG. 2 is an exploded perspective view of the air purifier 1.
A blower fan 34 is arranged inside the introduction port case 31. The blower fan 34 is fixed to the introduction port case 31 via the motor cover 35. The blower fan 34 is rotated by electric power supplied from a power supply circuit (not shown), and blows air from the opening 30 toward the inside of the main body 2. The blower fan 34 may be an axial fan, or a sirocco fan or a cross flow fan may be used.
The lower surface of the blower fan 34 is exposed to the opening 30, and the fan guard 36 is attached to this exposed surface.

The motor cover 35 is a plate-shaped member that closes the periphery of the blower fan 34. An opening is provided in the center of the motor cover 35, and the blower fan 34 is fitted into this opening.

The inlet case 31 has a joint portion 311 connected to the lower end portion 212 of the cylinder 21 and a joint portion 312 connected to the lower end portion 222 of the cylinder 22.
The end portion 212 is fitted so as to cover the joint portion 311 and the end portion 222 is fitted so as to cover the joint portion 312.
An opening for allowing air to flow is formed in the joint portions 311 and 312. Therefore, the air blown by the blower fan 34 flows into the cylinders 21 and 22 through the joint portions 311 and 312.

A lamp holder 53 having a lamp socket for a straight tube type fluorescent lamp is fixed to the joint portion 311. Similarly, a lamp holder 54 having a lamp socket for a straight tube type fluorescent lamp is fixed to the joint portion 312.

A circular tubular ultraviolet lamp 51, 52 is attached to the lamp holders 53, 54. The ultraviolet lamps 51 and 52 correspond to an example of an ultraviolet light source. The ultraviolet lamps 51 and 52 are, for example, straight tube lamps having a tube diameter of 26φ.

The ultraviolet lamps 51 and 52 emit ultraviolet rays having a wavelength of 100 nm or more. Preferably, the ultraviolet lamps 51 and 52 emit UV-C waves having a wavelength of 100 nm to 280 nm, and more preferably 253.7 nm, which is known to have high bactericidal activity. As the ultraviolet lamps 51 and 52, for example, straight tube fluorescent lamps for sterilization can be used.

The lamp holder 53 supports the ultraviolet lamp 51 so that the ultraviolet lamp 51 is arranged along the axial direction of the cylinder 21. Similarly, the lamp holder 54 supports the ultraviolet lamp 52 so that the ultraviolet lamp 52 is arranged along the axial direction of the cylinder 22.

The air purifier 1 includes a power supply circuit (not shown) that supplies electric power to the blower fan 34 and the ultraviolet lamps 51 and 52. The power supply circuit of the air purifier 1 is connected to a commercial AC power supply by a power cable 61 (FIG. 6). The power supply circuit of the air purifier 1 may include a glow starter for lighting the ultraviolet lamps 51 and 52, or an electronic lighting circuit. The air purifier 1 may include a switch for turning on / off the energization of the blower fan 34 and the ultraviolet lamps 51 and 52.

The outlet case 41 has a joint portion 411 connected to the upper end portion 211 of the cylinder 21 and a joint portion 412 connected to the upper end portion 221 of the cylinder 22. The end portion 211 is fitted so as to cover the joint portion 411, and the end portion 221 is fitted so as to cover the joint portion 412. An opening is provided on the lower surface of the joint portions 411 and 412. The air flowing upward through the cylinders 21 and 22 flows into the discharge port case 41 through the joint portions 411 and 412.

As shown by a virtual line in FIG. 2, the filter 56 may be arranged in the discharge port case 41.
The filter 56 is a plate-shaped filter arranged between the joint portions 411 and 412 and the end plate 42. The filter 56 is configured by using, for example, a sponge-like resin filter or a non-woven fabric. Preferably, the filter 56 is a HEPA (High Efficiency Particulate Air Filter). The filter 56 collects particles contained in the air discharged from the end plate 42 through the cylinders 21 and 22. These particles are, for example, dust such as pollen and house dust, pathogens such as fungi and viruses, and particles containing these pathogens.

The ultraviolet rays emitted by the ultraviolet lamps 51 and 52 reach the filter 56 through the openings of the joint portions 411 and 412. Therefore, the pathogen contained in the air introduced from the introduction port 3 by the air purifier 1 is irradiated with ultraviolet rays while passing through the cylinders 21 and 22, and is further collected by the filter 56 and irradiated with ultraviolet rays. Since the filter 56 is constantly irradiated with ultraviolet rays while the ultraviolet lamps 51 and 52 are lit, the pathogens collected by the filter 56 are irradiated with ultraviolet rays for a long time. Therefore, by arranging the filter 56 in the outlet case 41, the pathogen in the air introduced into the air purifier 1 can be sterilized or inactivated more reliably.

FIG. 3 is a perspective view of a main part of the air purifier 1.
As shown in FIG. 3, the air purifier 1 sucks outside air from the opening 30 below the air purifier 1 by the operation of the blower fan 34. The outside air sucked by the blower fan 34 flows into the inside of the cylinder 21 through the joint portion 311 and rises inside the cylinder 21, passes through the discharge port case 41, passes through the finger guard 43, and flows out to the outside. Further, the outside air sucked by the blower fan 34 flows into the inside of the cylinder 22 through the joint portion 312, rises inside the cylinder 22, passes through the finger guard 43, and flows out to the outside.

Inside the cylinders 21 and 22, the air flowing in from the introduction port case 31 is irradiated with ultraviolet rays by the ultraviolet lamps 51 and 52. As a result, pathogens such as bacteria and viruses in the air are sterilized, sterilized, or inactivated by the ultraviolet rays of the ultraviolet lamps 51 and 52, and the treated air is exhausted from the opening 40.

FIG. 4 is a cutaway perspective view taken along the line AA of FIG. Further, FIG. 5 is a cross-sectional view taken along the line AA of FIG.
As shown in FIGS. 4 and 5, the ultraviolet lamp 51 is arranged inside the cylinder 21 along the axial direction of the cylinder 21. In the cross section of the cylinder 21, the ultraviolet lamp 51 is located at the center of the circle, which is the cross section of the cylinder 21, or at a position near the center. Specifically, the ultraviolet lamp 51 is located at a position where the axial center of the circular tubular ultraviolet lamp 51 completely coincides with or close to the axial center of the cylinder 21. Similarly, inside the cylinder 22, the ultraviolet lamp 52 is located at or near the center in the cross section of the cylinder 22. Therefore, in the cross-sectional direction of the cylinder 21, the distance from the ultraviolet lamp 51 to the inner surface of the cylinder 21 is approximately less than or equal to the radius of the cylinder 21. The same applies to the cylinder 22.
Here, the position near the center of the cylinder 21 refers to a region within a predetermined distance from the axis center of the cylinder 21. The predetermined distance can be, for example, a distance corresponding to 1/2 of the radius of gyration of the cylinder 21. Alternatively, the predetermined distance can be a distance corresponding to the diameter of the ultraviolet lamp 51.

Therefore, inside the cylinders 21 and 22, a space having a high intensity of the ultraviolet rays emitted by the ultraviolet lamps 51 and 52 is formed, so that the air can be efficiently purified.

Further, the inner surfaces of the cylinders 21 and 22 are mirror-finished stainless steel. By reflecting the ultraviolet rays emitted by the ultraviolet lamps 51 and 52 on the inner surfaces of the cylinders 21 and 22, the air can be purified with higher efficiency.

The position behind the lamp holders 53 and 54 is not directly irradiated with the ultraviolet light from the ultraviolet lamps 51 and 52, but the ultraviolet rays reflected from the inner surfaces of the cylinders 21 and 22 are irradiated at this position. Since the inner surfaces of the cylinders 21 and 22 are made of mirror-finished stainless steel, the intensity of the reflected light of ultraviolet rays is sufficiently high, and the effects of sterilizing, sterilizing, and inactivating pathogens can be expected. Therefore, pathogens in the air can be sterilized, sterilized, and inactivated even in a position behind the lamp holders 53 and 54.

As described above, the air purifier 1 according to the first embodiment includes an air introduction port 3, an air discharge port 4, and a main body portion 2 that connects the introduction port 3 and the discharge port 4. The main body 2 includes cylinders 21 and 22, and has a configuration in which circular tubular ultraviolet lamps 51 and 52 are arranged on the cylinders 21 and 22 at positions concentric with or close to the cylinders 21 and 22.

According to this configuration, by allowing air to flow from the introduction port 3 to the discharge port 4, it is possible to efficiently purify the air inside the cylinders 21 and 22 by the ultraviolet rays emitted by the ultraviolet lamps 51 and 52. The air purifier 1 has a simple structure in which the ultraviolet lamps 51 and 52 are arranged inside the cylinders 21 and 22. Therefore, it has advantages such as manufacturing with a small number of man-hours, miniaturization and weight reduction. Further, the ultraviolet lamps 51 and 52 are concentrically arranged on the cylinders 21 and 22 constituting the main body 2. Therefore, the air in the internal space of the cylinders 21 and 22 is within a radius of the cylinders 21 and 22 from the ultraviolet lamps 51 and 52. Therefore, most of the air inside the cylinders 21 and 22 is irradiated with ultraviolet rays with high intensity by the ultraviolet lamps 51 and 52. Therefore, the air can be efficiently purified.

In the air purifier 1, the main body 2 includes a plurality of cylinders 21 and 22 in parallel. The air purifier 1 has a configuration in which the ultraviolet lamps 51 and 52 are arranged concentrically with the cylinders 21 and 22 in the cylinders 21 and 22, respectively. With this configuration, a plurality of cylinders 21 and 22 can be used to irradiate a large amount of air with ultraviolet rays per unit time to purify the air.

In the air purifier 1, one end of each of the cylinders 21 and 22 is connected to the introduction port case 31, and the other end is connected to the discharge port case 41. With this configuration, the air introduced from the opening 30 can be surely flowed into the cylinders 21 and 22 to be purified by ultraviolet rays and discharged from the opening 40. Further, a device for purifying air using a plurality of cylinders 21 and 22 can be realized by a very simple configuration.

The air purifier 1 includes an introduction port case 31 connected to each of the cylinders 21 and 22. The introduction port case 31 includes a blower fan 34. In the air purifier 1, the air introduced from the opening 30 by the blower fan 34 flows into the cylinders 21 and 22 through the introduction port case 31. With this configuration, air can be efficiently introduced into each of the cylinders 21 and 22 from the opening 30.

The air purifier 1 includes stainless steel cylinders 21 and 22, and the inner surface of the cylinders 21 and 22 is a mirror surface. With this configuration, the inner surfaces of the cylinders 21 and 22 reflect ultraviolet rays with high reflectance. Therefore, the air can be purified more efficiently by the ultraviolet rays emitted from the ultraviolet lamps 51 and 52.

The ultraviolet light source included in the air purifier 1 is a straight tube type ultraviolet lamps 51 and 52. The ultraviolet lamps 51 and 52 are arranged along the axial direction of the cylinders 21 and 22. Therefore, the air purifier 1 can be miniaturized.

In the first embodiment described above, the case where the air purifier 1 is installed on the floor has been described, but the air purifier 1 can be suspended from the ceiling or the like.
FIG. 6 is a diagram showing another installation example of the air purifier 1, and shows a state in which the air purifier 1 is suspended and installed. In this installed state, the air purifier 1 is fixed to the ceiling or the like so that the cylinders 21 and 22 are horizontal.

When the air purifier 1 is not placed on the floor, it is easy to introduce air into the introduction port case 31, so that it is not necessary to provide the spacer 32 and the stand 33. Therefore, for example, the end plate 42 may be attached to the introduction port case 31 as shown in FIG. In this configuration, the blower fan 34 sucks the outside air through the finger guard 43 provided on the end plate 42, and the sucked air is purified in the main body 2 and discharged from the discharge port 4. The air purifier 1 can efficiently purify the air as if it were installed on the floor.

[Second Embodiment]
FIG. 7 is a perspective view of the air purifier 1A according to the second embodiment to which the present invention is applied.
In the first embodiment, an example in which the main body 2 is composed of two cylinders 21 and 22 has been described, but the number of cylinders in the main body 2 is not limited.
Here, as the second embodiment, the configuration of the air purifier 1A including one cylinder 21 will be described.

The air purifier 1A has an introduction port 3A, a discharge port 4A, and a main body portion 2A connecting the introduction port 3A and the discharge port 4A. The main body 2A is composed of one cylinder 21. The cylinder 21 and the internal configuration of the cylinder 21 are as described in the first embodiment.

The air purifier 1A has an introduction port case 31A, a spacer 32, a stand 33A, an discharge port case 41A, an end plate 42A, and a cover 44A. The introduction port case 31A, the stand 33A, the discharge port case 41A, the end plate 42A, and the cover 44A are the introduction port case 31, the stand 33, the discharge port case 41, the end plate 42, and the cover 44A, respectively, described in the first embodiment. , The cover 44 is miniaturized to fit one cylinder 21.

A hollow introduction port case 31A fixed to the end of the cylinder 21 and a stand 33A are arranged in the introduction port 3A. As shown in FIG. 7, the air purifier 1A is installed vertically, for example, so that the cylinder 21 is substantially perpendicular to the installation surface. The internal space of the cylinder 21 communicates with the inside of the introduction port case 31A.

The stand 33A is in contact with the installation surface of the air purifier 1 and supports the air purifier 1. The stand 33A is connected to the introduction port case 31A via the spacer 32, and an opening 30A is formed between the introduction port case 31A and the stand 33A. The opening 30A functions as an intake port for allowing outside air to flow into the main body 2A. A blower fan 34 is arranged in the introduction port case 31A, sucks outside air from the opening 30A, and sends air to the cylinder 21.

A hollow discharge port case 41A fixed to the end of the cylinder 21, an end plate 42A fixed to the discharge port case 41A, and a cover 44A covering the upper part of the end plate 42A are arranged in the discharge port 4A. To. The internal space of the cylinder 21 communicates with the inside of the discharge port case 41A.

The end plate 42A is formed with an opening having a finger guard 43 located in the center of the end plate 42A. The cover 44A covers the upper part of the end plate 42A at a position separated from the end plate 42A by a predetermined distance, and forms an opening 40A. The opening 40A functions as an outlet for discharging air from the main body 2A.

The air purifier 1A takes in air from the opening 30A into the main body 2A, purifies the air with ultraviolet rays in the main body 2A, and discharges the purified air from the opening 40A.

The air purifier 1A includes an air introduction port 3A, an air discharge port 4A, and a main body portion 2A connecting the introduction port 3A and the discharge port 4A, and the main body portion 2A includes a cylinder 21 and a cylinder 21. It has a configuration in which a circular tubular ultraviolet lamp 51 is arranged concentrically with the cylinder 21. Similar to the air purifier 1 described in the first embodiment, the air purifier 1A introduces air from the introduction port 3A into the main body 2A, purifies the air with the ultraviolet lamp 51 in the main body 2A, and discharges the air. Discharge from 4A. According to this configuration, the air can be efficiently purified by the air purifier 1A having a simple configuration.

[Third Embodiment]
Subsequently, as a third embodiment, the configuration of the air purifier 1B including the three cylinders 24, 25, 26 will be described.
FIG. 8 is a perspective view of the air purifier 1B according to the third embodiment to which the present invention is applied.
The air purifier 1B has an introduction port 3B, a discharge port 4B, and a main body portion 2B connecting the introduction port 3B and the discharge port 4B. The main body 2B includes cylinders 24, 25, and 26 arranged in parallel. The cylinders 24, 25, and 26 are, for example, stainless steel pipes having a diameter of 120 mm, and the inner surface thereof is mirror-finished.

A hollow introduction port case 37 fixed to the ends of the cylinders 24, 25, and 26 and a stand 39 are arranged in the introduction port 3B. The air purifier 1B is installed vertically so that the cylinders 24, 25, and 26 are substantially perpendicular to the installation surface. The internal spaces of the cylinders 24, 25, and 26 communicate with the inside of the inlet case 37, respectively.

The stand 39 is in contact with the installation surface of the air purifier 1 and supports the air purifier 1. The stand 39 is connected to the introduction port case 37 via the spacer 38, and an opening 30B is formed between the introduction port case 37 and the stand 39. The opening 30B functions as an intake port for allowing outside air to flow into the main body 2B. A blower fan 34 is arranged in the introduction port case 37, sucks outside air from the opening 30B, and sends air to the cylinders 24, 25, and 26.

The discharge port 4B includes a hollow discharge port case 45 fixed to the ends of the cylinders 24, 25, and 26, an end plate 46 fixed to the discharge port case 45, and a cover 48 that covers the upper part of the end plate 46. , Are placed. The internal spaces of the cylinders 24, 25, and 26 communicate with the inside of the discharge port case 45.

The end plate 46 is arranged so as to close the upper end surface of the discharge port case 45, and an opening having a finger guard 47 is formed in the center of the end plate 46. The cover 48 covers the upper part of the end plate 46 at a position separated from the end plate 46 by a predetermined distance, and forms an opening 40B. The opening 40B functions as an outlet for discharging air from the main body 2.

Inside the cylinders 24, 25, 26, an ultraviolet lamp is installed in the same manner as the cylinders 21, 22. The ultraviolet lamp is arranged concentrically with or close to the cylinders 24, 25, and 26.

The air purifier 1B takes in air from the opening 30B into the main body 2B, purifies the air with ultraviolet rays in the main body 2B, and discharges the purified air from the opening 40B.

Similar to the air purifier 1 described in the first embodiment, the air purifier 1B introduces air from the introduction port 3B into the main body 2B, purifies the air with an ultraviolet lamp in the main body 2B, and discharges the air from the outlet 4B. Discharge from. According to this configuration, the air can be efficiently purified by the air purifier 1B having a simple configuration.

The air purifier 1B utilizes three cylinders 24, 25, and 26 having a built-in ultraviolet lamp. Therefore, for example, in the air purifier 1B, the amount of air blown by the blower fan 34 can be increased as compared with the air purifier 1 without lowering the efficiency of air purification. Therefore, the air purifier 1B has an advantage that more air can be purified as compared with the air purifier 1.

[Fourth Embodiment]
FIG. 9 is a perspective view of the air purifier 1C of the fourth embodiment to which the present invention is applied.
The air purifier 1C is configured by attaching an end case 63 to one end of a main body 2 having a cylinder 21 and a cylinder 22, and attaching a sealing case 68 to the other end. The configuration of the main body 2 is the same as that of the air purifier 1 described in the first embodiment.

The end case 63 is connected to each of the ends of the cylinder 21 and the cylinder 22. A stand 65 is fixed to the end case 63 via a spacer 64. The end case 63 and the stand 65 are separated by a spacer 64 to form an opening 30B.

The air purifier 1C is installed on the floor, for example, with the stand 39 facing down. The stand 39 is in contact with the installation surface of the air purifier 1C and supports the air purifier 1C.

The end case 63 is hollow, and the internal spaces of the cylinder 21 and the cylinder 22 communicate with the inside of the end case 63, respectively.

The internal space of the end case 63 opens to the opening 30B. Of the end case 63, the portion directly below the cylinder 21 functions as the introduction port 3C, and the portion directly below the cylinder 22 functions as the discharge port 4C.

In the introduction port 3C, the end case 63 incorporates a blower fan 34. The blower fan 34 is located below the end portion 212 of the cylinder 21, sucks outside air from the opening 30B, and blows air toward the inside of the cylinder 21.
At the discharge port 4C, the end 222 of the cylinder 22 opens inside the end case 63.

The sealing case 68 is a hollow member joined to the end portion 211 of the cylinder 21 and the end portion 221 of the cylinder 22. Inside the sealing case 68, the internal space of the cylinder 21 and the internal space of the cylinder 22 communicate with each other. The side surface and the upper surface of the sealing case 68 are sealed, and outside air does not enter or exit at the end portion 211 and the end portion 221.

The cylinders 21 and 22 are connected by a sealing case 68 to form a long air passage from the end 212 to the end 222. The cylinder 21 corresponds to an example of the first cylinder, and the cylinder 22 corresponds to an example of the second cylinder.

The air purifier 1C introduces outside air into the cylinder 21 from the opening 30B by the operation of the blower fan 34. The air introduced into the cylinder 21 is purified inside the cylinder 21 and reaches the sealing case 68. This air flows into the inside of the cylinder 22 from the sealing case 68, is purified inside the cylinder 22, and flows out from the end 222 to the opening 30B.

As described above, the air purifier 1C includes an air introduction port 3C, an air discharge port 4C, and a main body 2 that connects the introduction port 3C and the discharge port 4C. The main body 2 has cylinders 21 and 22 arranged in parallel, and each of the cylinders 21 and 22 has a configuration in which the ultraviolet lamps 51 and 52 are arranged concentrically with or close to the cylinders 21 and 22.

According to this configuration, air can be circulated from the introduction port 3C through the cylinder 21 and the cylinder 22, and the air can be efficiently purified by the ultraviolet rays emitted by the ultraviolet lamps 51 and 52 inside the cylinders 21 and 22. The air purifier 1C has a simple structure in which the ultraviolet lamps 51 and 52 are arranged inside the cylinders 21 and 22, and has an advantage that it can be manufactured with a small number of man-hours.

Further, in the main body 2 of the air purifier 1C, the end 212 of the cylinder 21 communicates with the introduction port 3C, the end 222 of the cylinder 22 communicates with the discharge port 4C, and the cylinder 21 and the cylinder 22 are sealed. Connected by case 68.
According to this configuration, the cylinder 21 and the cylinder 22 are connected by the sealing case 68 to form one long ventilation path. Therefore, the air introduced from the introduction port 3C is purified via both the cylinder 21 and the cylinder 22. Therefore, the air introduced from the introduction port 3C can be efficiently purified by irradiating the air with ultraviolet rays for a long time.

Further, in the air purifier 1C, the introduction port 3C and the discharge port 4C are provided side by side at one end of the main body portion 2. According to this configuration, since intake and exhaust can be performed by one opening 30B, there is an advantage that there is a high degree of freedom regarding the installation location and installation direction of the air purifier 1C.

The above-described embodiment shows only one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.

The air purifiers 1, 1A, 1B, and 1C described in the above embodiment have been described as a configuration in which one ultraviolet lamp 51 is arranged in a cylinder 21. The present invention is not limited to this, and for example, a plurality of circular tubular ultraviolet lamps may be arranged side by side along the axial direction of the ultraviolet lamp as an ultraviolet light source. That is, a plurality of ultraviolet lamps may be arranged side by side along the axial direction of the cylinder 21 near or near the center of the axis of the cylinder 21. Even when this configuration is used, the effects described in each of the above embodiments can be obtained. Further, the ultraviolet lamps 52 provided in the cylinder 22 of the air purifiers 1 and 1C may also have a configuration in which a plurality of ultraviolet lamps are arranged side by side along the axial direction. Similarly, in the air purifier 1B, the ultraviolet light source arranged inside the cylinders 24, 25, 26 may be one ultraviolet lamp arranged along the axial direction of the cylinders 24, 25, 26, respectively. However, it may be a plurality of ultraviolet lamps arranged side by side in the axial direction.
Further, for example, in the air purifiers 1, 1A, 1B, and 1C, an LED (Light Emitting Diode) may be provided as an ultraviolet light source instead of the ultraviolet lamps 51 and 52. The wavelength of the ultraviolet rays emitted by the ultraviolet light source is preferably the same as the wavelengths of the ultraviolet lamps 51 and 52.

Further, the same filter as the filter 56 described in the first embodiment may be arranged in the discharge port cases 41A and 45. Further, a filter similar to the filter 56 may be arranged on the discharge port 4C side of the end case 63. According to these configurations, as described in the first embodiment, the effect that pathogens in the air can be more reliably sterilized or inactivated can be obtained.

Further, the number of cylinders 21 and 22 included in the air purifier 1C is not limited, and a configuration having three or more cylinders may be used.

Further, although the air purifier 1C has been described as having an opening 30B at the end of the main body 2 near the installation surface, the air purifier 1C may have an opening 30B at the upper part in the installed state. Further, the air purifier 1C may be placed horizontally and suspended as shown in FIG.

1, 1A, 1B, 1C Air purifier 2, 2A, 2B Main body 3, 3A, 3B, 3C Introductory port 4, 4A, 4B, 4C Outlet port 21 Cylindrical (first cylinder)
22 cylinder (second cylinder)
24 Cylinder 25 Cylinder 26 Cylindrical 26 Cylindrical 30, 30A, 30B Opening 31 Inlet case 32 Spacer 33 Stand 34 Blower fan 35 Motor cover 36 Fan guard 37 Introducing port case 38 Spacer 39 Stand 40, 40A, 40B Opening 41, 45 Outlet case 42 , 46 End plate 43, 47 Finger guard 44, 48 Cover 51, 52 Ultraviolet lamp (ultraviolet light source)
53, 54 Lamp holder 56 Filter 61 Power cable 63 End case 64 Spacer 65 Stand 68 Encapsulation case 211, 212, 221, 222 Ends 311, 312 Joints 411, 412 Joints

Claims (7)

It is provided with an air inlet, an air outlet, and a main body that connects the inlet and the outlet.
The main body is provided with a cylinder.
An air purifier in which a circular tubular ultraviolet light source is arranged in the cylinder at a position concentric with or close to the cylinder. The main body is provided with a plurality of the cylinders in parallel.
The air purifier according to claim 1, wherein the ultraviolet light source is arranged in each of the cylinders at a position concentric with or close to the cylinder. The air purifier according to claim 2, wherein one end of each main body is connected to the introduction port and the other end is connected to the discharge port. With an inlet case connected to each of the cylinders
The inlet case is equipped with a blower fan.
The air purifier according to claim 3, wherein the air introduced from the introduction port by the blower fan flows into the cylinder through the introduction port case. The main body includes a first cylinder and a second cylinder.
One end of the first cylinder communicates with the introduction port,
One end of the second cylinder communicates with the outlet and
The air purifier according to claim 2, wherein the first cylinder and the second cylinder are connected to each other. The air purifier according to any one of claims 1 to 5, wherein the main body portion includes the cylinder made of stainless steel, and the inner surface of the cylinder is a mirror surface. The air purifier according to any one of claims 1 to 6, wherein the ultraviolet light source is a straight tube type ultraviolet lamp, and one or a plurality of the ultraviolet light sources are arranged along the axial direction of the cylinder.

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