JPH08537Y2 - Air compressor - Google Patents

Description

[Detailed description of the device]

[0001]

This invention relates to an air compression device,
In particular, it is suitable for use in those requiring sterile and clean compressed air.

[0002]

As is well known, an air compressor is composed of an air compressor driven by an electric motor and a compressed air tank connected to the discharge side of the air compressor. Since a strainer and a silencer are attached to the intake side of the air compressor, dust removal and noise reduction are possible. However, since various bacteria contained in the air cannot be sterilized, the obtained compressed air is not sterile. On the other hand, in the food industry, the pharmaceutical industry, etc., there is a great demand for compressed air in the production process, but since it is not sterile compressed air as described above, it is not hygienic.

Therefore, a technique has been proposed in which aseptic compressed air is obtained as much as possible to obtain an air compressor suitable for the food industry, the pharmaceutical industry, and the like.

That is, according to the technique disclosed in Japanese Patent Publication No. 38-8187, an electric dust collector is provided in the intake pipe of the air compressor constituting the air compressor to remove dust in the intake air and sterilize the intake air. It is something that is done.

[0005]

According to the above-mentioned prior art, the bacteria in the air sucked into the air compressor can be sterilized as much as possible, so that the compressed air discharged from the air compressor is It can be used in a wide range and can be favorably used in the food industry, the pharmaceutical industry and the like.
However, in order to actually use such a technique, the applicant of the present application conducted some studies and found that the following points were insufficient. That is, the electrostatic precipitator may be accompanied by corona discharge, and when ozone O ₃ is generated by the corona discharge, air containing ozone harmful to the human body is supplied, so that the application is limited even if sterilization is possible. Further, since the remaining dust that could not be collected is charged, if there is an electric substrate or the like on the downstream side, dust is likely to be accumulated and may cause a short circuit. From a manufacturing installation perspective,
In the case of an electric dust collector, the dust collecting function is good, but a device for generating a DC high voltage of, for example, about 40 to 60 KV is required. Moreover, since a control device for adjusting the applied voltage for preventing burnout is also required, there is a problem that the cost of dropping the entire equipment is high. In addition, there is a disadvantage that the entire installation space becomes relatively large.

Looking at the phenomenon during operation, when the air compressor is started, the electrostatic precipitator is also started along with it, but the air existing on the downstream side of the electrostatic precipitator enters and exits outside at the stop stage. Because you are free to do
May be contaminated. Therefore, there is a possibility that unsterilized compressed air may be discharged to the object at the beginning of activation.

Further, although the conventional device is formed larger than the cross-sectional area of the suction pipe on the suction side of the air compression device, the electrostatic precipitator element has a small thickness in the moving direction of air, and therefore,
The opportunity for the air to come into contact with the device for sterilizing bacteria in the air is instantaneous, and not all of the intake air is sterilized sufficiently by the sterilizer.

The air compressor for medical use is required to be as quiet as possible. On the other hand, conventionally, a silencer is provided at the intake pipe end of the air compressor. Although this muffler has a muffling effect on the air intake sound, it is one of the noise factors of the air compression device.

In view of the above-mentioned problems, the present invention can be installed at a low cost regardless of the existing air compressor or the new air compressor, and enables bacteria in the air to be uniformly sterilized. The purpose is to do.

In addition to the above object, another object of the present invention is to further reduce noise.

[0011]

According to a first aspect of the present invention, an air compressor 1 is driven by an electric motor 2 so that air sucked through an intake pipe 8 is compressed and stored in a compressed air tank 3. In the air compression device, the sterilization device and dust removing means for sterilizing bacteria in the air sucked into the air compressor 1 are arranged in the suction system of the air compressor 1. An air outlet connected to the intake pipe 8 connected to the air compressor 1, an air intake 10 for taking in the air sucked into the air compressor 1 through the intake pipe 8, and the air It is provided between the outlet and the air intake 10, and is formed as a space having a cross sectional area sufficiently larger than the cross sectional area of the intake pipe 8 and a length necessary for sterilizing the intake air. Sterilization area and the above sterilization area Have been disposed in, comprising a closed case 9 UV sterilizer lamp 11 for sterilizing bacteria in the air present in the sterilization region is provided, an air compressor 1
Almost all areas of the intake system of the air compressor 1 can be sterilized even when stopped.
It is an air compression device characterized by the fact that it is capable.

A second aspect of the present invention is the air compressor according to the first aspect, characterized in that the sterilization area is surrounded by a light reflecting plate 14.

A third aspect of the present invention is configured such that the air compressor 1 is driven by the electric motor 2 and the air sucked through the intake pipe 8 is compressed and stored in the compressed air tank 3. In the air compressor in which the sterilizing device and the dust removing means for sterilizing bacteria in the air sucked into the air compressor 1 are arranged in the suction system of the air compressor 1, the air compressor is connected to the air compressor 1. An air outlet to which the intake pipe 8 is connected, an air inlet 10 for taking in the air sucked into the air compressor 1 through the intake pipe 8, an air outlet and the air intake. It is provided between the inlet 10 and the cross-sectional area which is sufficiently larger than the cross-sectional area of the intake pipe 8 and the length required for sterilizing the intake air.
A sterilization area formed as a space having a of, have been disposed in the sterilization area, the sealed case 9 UV sterilizer lamp 11 for sterilizing bacteria in the air present in the sterilization region is provided A silencer 12 is provided at the air outlet.
Is attached, and the muffler 12 is disposed in the closed case 9, which is an air compression device.

A fourth aspect of the present invention is the air compression apparatus according to the third aspect, characterized in that the sterilization area is surrounded by a light reflecting plate 14.

In the fifth aspect of the present invention, the sterilization area is formed as a serial air passage by providing a plurality of baffles 18, 19, 20 in the closed case 9, and a plurality of ultraviolet sterilizing lamps 25 are provided at different positions of the air passage. , 26, 27 are provided, and the air compression apparatus according to the first invention or the third invention is provided.

[0016]

According to the above construction, according to the first aspect of the present invention, the air existing in the sterilization area formed in the closed case 9 is sterilized by the ultraviolet sterilization lamp 11 attached thereto. The result is a substantially sterile state. Moreover, since the sterilization area is formed as a space having a sufficiently large cross-sectional area as compared with the cross-sectional area of the intake pipe 8, a large amount of sterilized air exists in the sterilization area, which is sufficient. Unsterilized air will not be sucked into the air compressor 1. Further, even if the air in the intake pipe 8 goes in and out while the air compressor 1 is stopped, most of it is simply replaced with the air in the closed case 9. On the other hand, the air in the closed case 9 is the air compressor 1 described above.
Since it is possible to sterilize by the ultraviolet sterilization lamp 11 even when the air compressor 1 is stopped, it is possible to supply the air sufficiently sterilized even when the air compressor 1 is driven.

In the second aspect of the present invention, since the sterilization area is surrounded by the light reflecting plate 14 in the first aspect, the amount of ultraviolet rays reflected by the ultraviolet sterilizing lamp 11 is large and the sterilizing effect can be enhanced.

In addition to the effect of the first invention, the third invention of the present invention has the silencer 12 in the closed case 9, so that the sound transmission loss increases and the intake noise can be made particularly small.

In the fourth aspect of the present invention, since the sterilization area is surrounded by the light reflecting plate 14 in the third aspect, the amount of reflected light of the ultraviolet sterilization line is large and the sterilization effect can be enhanced.

A fifth aspect of the present invention is that, in the first or third aspect, the sterilization area is formed as a serial air passage, and a plurality of ultraviolet sterilizing lamps are provided at different positions of this air passage.
Repeatedly irradiated with ultraviolet rays at a position near the ultraviolet germicidal lamp,
The sterilizing power is increased.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

Example 1 ... See FIGS. 1, 2 and 3.

Reference numeral 1 is an air compressor driven by an electric motor 2, and 3 is a compressed air tank. The discharge side 4 of the air compressor 1 and the compressed air tank 3 communicate with each other through a discharge pipe 5, and a compressed air take-out pipe 6 connected to a device using compressed air is led out from the compressed air tank 3.

Then, a closed case 9 is connected to the suction side 7 of the air compressor 1 via an intake pipe 8, that is, a closed case 9 is provided so as to surround the inflow terminal of the intake pipe 8, and the air intake is provided in the case 9. An inlet 10 is formed, and an air intake system is constituted by the air intake 10, the inside of the closed case 9 and the intake pipe 8.
1 is provided. This ultraviolet germicidal lamp 11 has a wavelength of, for example, about 253.7 nm.

In the above case, the necessary filter and silencer 1
2 is arranged at the inflow end of the intake pipe 8 and the air intake 1
No. 0 is provided with a necessary filter 13, and a mirror plate 1 for reflecting ultraviolet rays is provided on the inner surface of the closed case 9 as shown in FIG.
4 or a diffuse reflection plate 14 for producing a diffuse reflection effect may be provided.

According to such a structure, the sealed case 9 and the ultraviolet sterilizing lamp 11 may be initially attached, so that the installation can be easily performed. Air is first introduced into the closed case 9 through the air inlet 10 regardless of whether the device is being driven or stopped. The closed case 9 is formed as an air sterilization region for sterilizing the air supplied to the air compressor 1,
The air entering here is sterilized by the ultraviolet sterilizing lamp 11 attached thereto, and becomes substantially sterile. Moreover, since the sterilization area is formed as a space having a sufficiently large cross-sectional area as compared with the cross-sectional area of the intake pipe 8, a large amount of sterilized air always exists in the sterilization area. Therefore, the air that is not sufficiently sterilized is not sucked into the air compressor 1,
Aseptic air can always be supplied to the air compressor 1.

Here, when the air compressor 1 is driven, dust is removed by the filter / silencer 12, and the sound generated during inhalation is reduced and sterilized by the ultraviolet sterilizing lamp 11 through the intake pipe 8. Air is sucked into the air compressor 1. The noise reduced by the muffler 12 is further prevented from being propagated to the outside by the closed case 9. That is, while the air compressor 1 is stopped, the air in the intake pipe 8 is replaced with the external air, but most of the air is replaced with the sterilizing air in the closed case 9. Is ejected. Thereafter, as in the conventional case, the compressed air is led to a device (not shown) via the compressed air extraction pipe 6.

In this case, since the air is made aseptic in the intake system, the compressed air sent to the equipment using compressed air becomes aseptic.

In this way, it is possible to prevent unsterilized air from being sucked into the device when the device is started. In FIG. 2, reference numeral 15 is a handle of the case, 16 is an ultraviolet germicidal lamp switch, and 17 is an indicator lamp.

Example 2 ... See FIG.

In this example, the inside of the case 9 in the first embodiment is improved as follows.

That is, a plurality of baffle plates 1 are provided in the case 9.
8, 19, 20 are arranged, and a plurality of serial air passages 21, 2 are provided.
2, 23 and 24 are formed, and ultraviolet ray sterilizing lamps 25, 26 and 27 are provided in the respective air passages. By doing so, the air in the case is better sterilized by the ultraviolet ray sterilizing lamp. That is, it is possible to further reduce the risk that a part of the air that is not sufficiently irradiated with ultraviolet rays will flow into the air compressor 1 of the apparatus. Other operations are substantially the same as those in the first embodiment.

[0033]

As described above, the first aspect of the present invention is to provide a closed case 9 in the intake system for supplying air to the air compressor 1.
And a UV sterilization lamp 11 is installed in the closed case 9 to form a sterilization area therein, and air existing in the sterilization area is sterilized by the UV sterilization lamp 11 to be substantially sterile. Since it is in a state, ozone is not included.
The compressed air that has been sterilized very well can be discharged from the air compressor 1. Moreover,
A larger cross-sectional area sufficiently as compared with the cross-sectional area of the intake pipe 8
Since the sterilization area is formed as a space having a length necessary for sterilization of the intake air , a large amount of sterilized air can be pooled in the sterilization area, and is sufficiently sterilized. It is possible to prevent the absence of air from being sucked into the air compressor 1. Further, even if the air in the intake pipe 8 goes in and out while the air compressor 1 is stopped, most of it is replaced with the air in the closed case 9, while the air in the closed case 9 is Even when the air compressor 1 is stopped, it can be sterilized by the ultraviolet sterilizing lamp 11, so that sufficiently sterilized air can be supplied even when the air compressor 1 is driven. Furthermore, since the end of the intake pipe 8 is housed in the closed case 9 equipped with the ultraviolet germicidal lamp 11, it is possible to make almost all of the construction, which has the advantage that the facility cost can be reduced.

The second aspect of the present invention is the ultraviolet sterilizing lamp 1 since the second aspect of the present invention is provided with the light reflecting plate 14.
The direct light by 1 and the reflected light reflected by a large reflectance act on the suction air, so that the bactericidal effect is large.

In addition to the effect of the first invention, the third invention of the present invention is such that the sound reduced by the muffler 12 is sealed by the closed case 9.
The effect is that the sound is further insulated and the suction noise can be reduced.

Since the fourth invention of the present invention is provided with the light reflecting plate 14 in the third invention, direct light and reflected light from the ultraviolet germicidal lamp act on the sucked air, so that the germicidal effect is large.

A fifth aspect of the present invention is the first or third aspect of the invention, in which a plurality of baffles 18, 19, 20 are provided to form a serial air passage, and a plurality of ultraviolet ray sterilizers are provided at different positions of the air passage. Since the lamp is provided, all the intake air flows near the ultraviolet sterilizing lamp, so that it is possible to reduce the possibility that a part of the air that has a large sterilizing effect and is not sufficiently irradiated with ultraviolet rays flows into the air compressor 1.

[Brief description of drawings]

FIG. 1 is a side view showing a whole in a partial cross section.

FIG. 2 is a perspective view of a case.

FIG. 3 is a partial cross-sectional view showing an example in which a mirror plate or a diffuse reflection plate is arranged in a case.

FIG. 4 is an overall view showing a second embodiment.

[Explanation of symbols]

1 ・ ・ Air compressor 2 ・ ・ Electric motor 3 ・ ・ Compressed air tank 5 ・ ・ Discharge pipe 6 ・ ・ Compressed air extraction pipe 8 ・ ・ Intake pipe 9 ・ ・ Sealed case 10 ・ ・ Air intake 11 ・ ・ UV germicidal lamp 12 ... Filter and silencer 18,1
Baffle plates 21, 22, 23, 24 ... Air passages 25, 26, 27 ... UV germicidal lamps.

Claims (5)

[Scope of utility model registration request] 1. An air compressor (1) is driven by an electric motor (2) so that air sucked through an intake pipe (8) is compressed and stored in a compressed air tank (3). In an air compressor in which a sterilizing device and a dust removing means for sterilizing bacteria in the inhaled air are arranged in an intake system of the air compressor 1, the intake pipe 8 connected to the air compressor 1 is connected. Between the air outlet and the air inlet 10 for introducing the air sucked into the air compressor 1 through the intake pipe 8 into the inside, and between the air outlet and the air inlet 10. Is provided,
A sterilization region formed as a space having a cross-sectional area sufficiently larger than the cross-sectional area of the intake pipe 8 and a length required for sterilizing the intake air; and a sterilization region disposed in the sterilization region, A closed case 9 provided with an ultraviolet sterilizing lamp 11 for sterilizing bacteria in the air present in the sterilization area is provided.
However, even when the air compressor 1 is stopped, the intake system of the air compressor 1
An air compression device characterized in that almost all areas can be sterilized . 2. The air compression apparatus according to claim 1, wherein the sterilization area is surrounded by a light reflection plate 14. 3. The air compressor 1 is driven by an electric motor 2 so that the air sucked through an intake pipe 8 is compressed and stored in a compressed air tank 3. In an air compressor in which a sterilizing device and a dust removing means for sterilizing bacteria in the inhaled air are arranged in an intake system of the air compressor 1, the intake pipe 8 connected to the air compressor 1 is connected. Between the air outlet and the air inlet 10 for introducing the air sucked into the air compressor 1 through the intake pipe 8 into the inside, and between the air outlet and the air inlet 10. Is provided,
A cross-sectional area and intake that are sufficiently larger than the cross-sectional area of the intake pipe 8
A sterilization region formed as a space having a length required for sterilization of air, and an ultraviolet sterilization disposed in the sterilization region and sterilizing bacteria in the air present in the sterilization region. An air compression apparatus comprising a closed case 9 provided with a lamp 11, a silencer 12 being attached to the air outlet, and the silencer 12 being disposed in the closed case 9. 4. The air compression apparatus according to claim 3, wherein the sterilization area is surrounded by a light reflection plate 14. 5. The sterilization area is a series air passage by providing a plurality of baffles 18, 19, 20 in a closed case 9, and a plurality of ultraviolet sterilizing lamps 2 are provided at different positions of the air passage.
5, 26, 27 are provided, The air compression apparatus of Claim 1 or 3 characterized by the above-mentioned.