Ultraviolet air disinfection device used in strong magnetic environment

Abstract

The invention provides an ultraviolet air disinfection device used in a strong magnetic environment, which comprises a direct current ballast 1, pure direct current output is obtained through the direct current ballast 1, and alternating current, especially high-frequency signals, is prevented from generating electromagnetic interference signals; the LED lamp further comprises an ultraviolet lamp tube 2, connectors 4 are arranged at the two ends of the ultraviolet lamp tube 2 and can be installed on a lamp holder 7, the connectors 4 on the two sides are connected with a wire 6 respectively, a switch 9 is arranged on the other side of the wire 6, and the switch 9 is electrically connected with the direct-current ballast 1, so that alternating-current signals, especially high-frequency signals, are prevented from generating electromagnetic interference signals. The device does not affect the work of instruments such as a nuclear magnetic resonance spectrometer, does not affect the nuclear magnetic imaging effect, can perform continuous real-time disinfection in a strong magnetic environment, and avoids the possibility of cross infection of patients.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of medical devices, and particularly relates to an ultraviolet air disinfection device used in a strong magnetic environment. BACKGROUND

[0002] The infectious disease medical institution is a region where infectious disease patients highly gather, and the bacteria and viruses of all types thereof are higher than those of other hospitals. The nuclear magnetic resonance room is a department with a high usage rate in the infectious disease medical institution, is relatively closed, has a large amount of people, and has a long patient examination time, and the concentration of bacteria or viruses in the room is extremely easy to deposit. Currently, the conventional ultraviolet disinfection lamp tube in the strong magnetic environment such as the nuclear magnetic resonance room is AC driven, and AC, especially high-frequency signals, can generate electromagnetic interference signals. The nuclear magnetic resonance instrument is a precision instrument, and has relatively strict requirements on the electromagnetic environment in the room. The ordinary ultraviolet disinfection device cannot be disinfected when the instrument such as the nuclear magnetic resonance instrument is working, otherwise the normal work of the instrument will be affected. Currently, there are manufacturers producing non-magnetic disinfection lamp vehicles and similar disinfection products in the strong magnetic field environment, but the air disinfection can only be performed when the instrument such as the nuclear magnetic resonance instrument is not working, which greatly reduces the disinfection frequency and increases the possibility of cross infection of patients. SUMMARY

[0003] The application obtains a direct current output by arranging a direct current ballast, and the ultraviolet lamp tube is driven by direct current. The device does not affect the work of the instrument such as the nuclear magnetic resonance instrument. Based on this, the application is completed.

[0004] The application discloses an ultraviolet air disinfection device used in a strong magnetic environment. The device comprises a direct current ballast 1, and obtains pure direct current output through the direct current ballast 1, so that electromagnetic interference signals generated by AC, especially high-frequency signals, are avoided. The device further comprises an ultraviolet lamp tube 2, and the ultraviolet lamp tube 2 is provided with connecting heads 4 at two ends. The connecting heads 4 can be installed on lamp holders 7, and the connecting heads 4 at two sides are connected with wires 6 respectively. The wire 6 is provided with a switch 9 at the other side, and the switch 9 is electrically connected with the direct current ballast 1.

[0005] Further, the ultraviolet lamp tube 2 is sleeved with a quartz glass tube 3 outside.

[0006] Further, the connecting heads 4 are provided with silica gel rings 7 outside, the silica gel rings 7 can be used to sleeve the quartz glass tube 3 outside the ultraviolet lamp tube 2, and the silica gel rings 7 play a fixing role on the quartz glass tube. The outer diameter of the silica gel ring 7 is the same as the inner diameter of the quartz glass tube 3, and the quartz glass tube 3 is sleeved with the silica gel ring 7, so that the quartz glass tube 3 is tightly matched with the silica gel ring 7.

[0007] Further, the ultraviolet lamp tube 2 is provided with a mercury amalgam 8.

[0008] Beneficial effects

[0009] The present application obtains pure DC output through the DC ballast, avoids electromagnetic interference signals generated by AC signals, especially high frequency signals, the device does not affect the operation of the nuclear magnetic resonance instrument, does not affect the nuclear magnetic imaging effect and can continuously disinfect in real time in a strong magnetic environment, avoids the possibility of cross infection of patients.

[0010] Since the DC lamp tube will produce electrophoresis phenomenon, the quartz glass tube is sleeved on the ultraviolet lamp tube, the temperature is increased to increase the diffusion force of mercury in the lamp tube, the temperature difference between both ends of the lamp tube is reduced to reduce the electrophoretic force, the concentration of mercury in the lamp tube is always uniform, and the brightness of both ends of the lamp tube is uniform.

[0011] After the quartz glass tube is arranged, the temperature of the ultraviolet lamp tube is increased, however, the ordinary ultraviolet lamp tube will increase the mercury gas pressure in the lamp tube with the temperature rise, and the power is reduced, therefore, the present application adopts amalgam instead of liquid mercury, stabilizes the mercury gas pressure in the lamp tube, so that the mercury pressure is about 0.8Pa when the lamp tube normally works, does not produce large fluctuation, and ensures that the illumination and power of the lamp tube when working meet the requirements. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic diagram of the present application;

[0013] Figure 2 is a schematic diagram of the ultraviolet lamp tube of the present application.

[0014] 1, DC ballast; 2, ultraviolet lamp tube; 3, quartz glass tube; 4, connecting head; 5, lamp holder; 6, wire; 7, silica gel ring; 8, amalgam; 9, switch. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0016] The utility model provides an ultraviolet air disinfection device in strong magnetic environment, including direct current ballast 1, through direct current ballast 1 obtains pure direct current output, avoids alternating current especially high frequency signal to produce electromagnetic interference signal, still including ultraviolet lamp tube 2, ultraviolet lamp tube 2 both ends are provided with connector 4, connector 4 can be installed on lamp holder 7, and the connector 4 of both sides is connected with wire 6 respectively, and wire 6 other side is provided with switch 9, and switch 9 is connected with direct current ballast 1, ultraviolet lamp tube 2 outside is equipped with quartz glass tube 3, the outside of connector 4 is provided with silica gel ring 7, and quartz glass tube 3 can be equipped outside ultraviolet lamp tube 2 through silica gel ring 7, and the silica gel ring 7 plays the function of fixing to quartz glass tube, the outer diameter of silica gel ring 7 is same with the inner diameter of quartz glass tube 3, after quartz glass tube 3 is equipped, realizes the close cooperation between silica gel ring 7.

[0017] In the embodiment, the ultraviolet lamp tube 2 is provided with amalgam 8.

[0018] The strong magnetic environment, such as the nuclear magnetic resonance instrument in the nuclear magnetic resonance room, is a precision instrument, and the electromagnetic environment in the room is required to be relatively harsh. The ordinary ultraviolet disinfection equipment will produce electromagnetic interference signals due to the use of alternating current, which will affect the normal work of the nuclear magnetic resonance instrument when the nuclear magnetic equipment is working.

[0019] Since the direct current lamp tube will produce electrophoresis phenomenon, the quartz glass tube is sleeved on the ultraviolet lamp tube to improve the temperature and increase the diffusion force of mercury in the lamp tube, reduce the temperature difference at both ends of the lamp tube and reduce the electrophoretic force, so that the concentration of mercury in the lamp tube is always uniform, and the brightness uniformity at both ends of the lamp tube is ensured.

[0020] After the quartz glass tube 3 is arranged, the temperature of the ultraviolet lamp tube 2 is increased. However, the ordinary ultraviolet lamp tube will increase the mercury gas pressure in the lamp tube and reduce the power as the temperature rises. Since the 253.7 nanometer ultraviolet light is emitted most when the mercury gas pressure is 0.8 Pa, the illuminance will be reduced when the mercury gas pressure is increased. The power of the ordinary ultraviolet lamp tube will be reduced as the temperature rises (the illuminance is reduced by 0.8% per 1℃ increase). To solve this problem, the amalgam is used to replace the liquid mercury to stabilize the mercury gas pressure in the lamp tube, so that the mercury pressure is about 0.8 Pa when the lamp tube is working normally, and large fluctuations will not occur, so that the illuminance and power of the lamp tube when working meet the requirements.

[0021] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A UV air disinfection device for use in a strong magnetic environment, comprising a DC ballast 1, through which a pure DC output is obtained to avoid electromagnetic interference signals generated by AC, especially high-frequency signals; and a UV lamp 2, wherein connectors 4 are provided at both ends of the UV lamp 2, and the connectors 4 can be mounted on a lamp holder 7. The connectors 4 on both sides are respectively connected to wires 6, and a switch 9 is provided on the other side of the wire 6, and the switch 9 is electrically connected to the DC ballast 1.

2. The device according to claim 1, wherein the outer side of the ultraviolet lamp tube 2 is provided with a quartz glass tube 3.

3. The device according to claim 2, wherein a silicone ring 7 is provided on the outside of the connector 4, through which the quartz glass tube 3 can be sleeved on the outside of the ultraviolet lamp 2, thereby fixing the quartz glass tube; the outer diameter of the silicone ring 7 is the same as the inner diameter of the quartz glass tube 3, and after the quartz glass tube 3 is sleeved, a tight fit is achieved between the silicone ring 7. 4 . The device according to claim 3 , wherein amalgam 8 is provided in the ultraviolet lamp tube 2 .

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