JPH0788170A - Air cleaning device for medical treatment - Google Patents

Abstract

PURPOSE:To surely sterilize bacteria in the air by electrifying the air in a hospital taken in by an air taking-in means to a minus side by a minus ion generating means, and subsequently, radiating ultraviolet rays by an ultraviolet discharge lamp in a room in which a flow passage is limited. CONSTITUTION:A minus ion generating device 1 receives water 3 in a tank 2 from a liquid feed pump 4, discharges it as mist from a nozzle 5, and electrifies the air to minus by static electricity generated by disruption of this mist. To this minus ion generating device 1, air in the inside of the hospital and the outside of the hospital, sucked from suction ports 7, 8 by an operation of an air pump 6 is supplied, and electrified to minus. The air emitted from the device 1 is guided into a sterilizing box 11 by a duct 10, after water is separated by a water/gas separating mechanism 9, sterilized by ultraviolet rays radiated by an ultraviolet discharge lamp 12, and the sterilized air is emitted from a duct 13. A temperature of the ultraviolet discharge lamp 12 is controlled by a temperature control circuit 20, based on a signal of a temperature detector 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sterilizing and cleaning air in a clinic.

[0002]

2. Description of the Related Art In hospitals, for example, dental clinics, since the drills used for cutting teeth have become air turbines, a large amount of saliva in the patient's mouth is atomized and scattered into the air, causing pathogenic bacteria. Are scattered in the treatment room and waiting room,
Nosocomial infections have become a major issue. Although it is possible to use a germicidal lamp or the like in order to solve such a problem, strong ultraviolet rays are required to kill pathogenic bacteria existing in a large amount in the air, and a harmful effect due to ultraviolet ray exposure becomes a problem.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to reliably kill pathogenic bacteria in the environment with a relatively simple structure. It is to provide a new cleaning device.

[0004]

In order to solve such a problem, in the present invention, a negative ion generating means connected to the exhaust port of the air intake means and an exhaust port of the negative ion generating means are connected. The room for restricting the air flow is equipped with a generating means having an ultraviolet discharge lamp.

[0005]

The air in the hospital taken in by the air intake means is charged to the negative side by the negative ion generation means, and then is irradiated with ultraviolet rays from the ultraviolet discharge lamp in the room with the restricted flow path. The bacteria inside will surely be killed by the synergistic effect of ions and ultraviolet rays.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the illustrated embodiments. FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 1 is a negative ion generator, which receives water 3 in a tank 2 disposed below from a liquid feed pump 4 and a nozzle 5 5, 5, ... Are discharged as mist in the air, and the air is negatively charged by static electricity generated by the division of the mist.

A discharge port of an air pump 6 is connected to the negative ion generator 1 to receive air from inside the hospital and air from outside the hospital through suction ports 7 and 8, and its discharge port at the time of negative ionization. A sterilization box 11 to be described later is connected by a duct 10 via a water separation mechanism 9 for removing the added excess water, and sterilized air is discharged from the duct 13.

Reference numeral 11 denotes the sterilization box described above, which is provided with an ultraviolet discharge lamp 12 in a room that limits the flow path of air, and allows air to pass through the ultraviolet discharge lamp 12 as near as possible.

Reference numeral 20 denotes a temperature control circuit, which is an ultraviolet discharge lamp 1
2 detects the temperature of the ultraviolet discharge lamp 12 by a signal from a temperature detector 14 arranged near the discharge current adjusting circuit 2
The discharge current is adjusted by 1 to control the discharge current so that the temperature of the discharge lamp 12 becomes a predetermined temperature, for example, the temperature at which ultraviolet rays are emitted with the highest efficiency, and the rotation speed of the air pump 6 is adjusted by the air volume adjusting circuit 22. Is adjusted to control the temperature of the discharge lamp 12 to be maintained at the above temperature. Reference numeral 13 in the figure indicates a filter.

In this embodiment, the air in the medical office taken in by the air pump 6 is added with negative ions by the negative ion generator 1 and dehumidified by the water / gas separation mechanism 9, and then passes through the duct 10. Sterilization box 11
Flow into. The sterilization box 11 is set to have a cross-sectional area corresponding to the ultraviolet ray output of the discharge lamp 12 installed therein, and is restricted to a flow rate that can reliably sterilize the air passing therethrough. Therefore, bacteria in the air passing therethrough are further irradiated with ultraviolet rays and are surely killed.

When the temperature of the discharge lamp 12 rises due to long-term use in this way, the control circuit 20 reduces the discharge current of the discharge lamp 12 or increases the amount of air passing through the discharge lamp 12 to release it. The temperature of the electric lamp 12 is lowered, and the discharge lamp 1
When the temperature of 2 decreases, the discharge current is increased,
By decreasing the air volume, the temperature is raised to a predetermined temperature.
Thereby, the spectrum with the highest bactericidal effect can be emitted.

In this embodiment, the negative ion generator 1 and the sterilization box 11 are always operated at the same time, but during the rest period, only the negative ion generator 1 is operated and the discharge lamp 12 is operated. It may be turned off.

[0013]

As described above, in the present invention,
Since the negative ion generating means connected to the exhaust port of the air intake means and the ultraviolet discharge lamp in the room that is connected to the exhaust port of the negative ion generating means and restricts the air flow are equipped with ultraviolet rays of relatively small output. The discharge lamp can surely sterilize the bacteria present in the air, and the side effects due to ultraviolet irradiation can be prevented.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an apparatus showing an embodiment of the present invention.

[Explanation of symbols]

 1 Negative Ion Generator 2 Tank 3 Water 4 Pump 5 Nozzle 6 Air Pump 9 Water Separation Mechanism 11 Sterilization Box 12 Ultraviolet Discharge Lamp 14 Temperature Detector

Claims (1)

[Claims] 1. A negative ion generating means connected to an exhaust port of the air intake means, and a generating means connected to the exhaust port of the negative ion generating means and having an ultraviolet discharge lamp in a room for restricting an air flow. Medical air purifier.