Ultraviolet lamp disinfection timing alarm device

Abstract

An ultraviolet lamp disinfection timing alarm device is provided with a program timer, a power adapter and a door suction alarm. The electric energy input end of the program timer is connected with AC220V, and the electric energy output end of the program timer is connected with the power adapter; a timer is arranged in the program timer, when the NPN triode Q1 is in a cut-off state, the normally-closed switch JG1 is closed, and when the NPN triode Q1 is in a conduction state, the normally-closed switch JG1 is disconnected. And the electric energy output end of the power adapter outputs 12V / maximum 1A direct current and is connected with the door stopper alarm. The door stopper alarm comprises a door stopper switch K1, and the door stopper switch K1 and the power adapter form a loop. The door stopper alarm comprises an alarm B1, the alarm B1 is connected with the door stopper switch K1 in parallel, and when the door stopper switch K1 is turned on, the alarm B1 and the power adapter form an alarm loop, and the alarm sounds. Through the structure, the utility model provides the disinfection timing alarm device for the ultraviolet lamp, which is strong in applicability, low in cost and good in popularization prospect.

Description

Technical Field

[0001] The utility model relates to the field of disinfection equipment, in particular to an ultraviolet lamp disinfection timing alarm device. Background Art

[0002] In recent years, due to the recurrence of epidemic viruses, air and environmental disinfection has attracted more and more attention. Strengthening air and environmental disinfection can reduce the viral load in the air and environment, thereby reducing the risk of transmission. At present, the commonly used disinfection method in medical institutions is ultraviolet disinfection, among which ultraviolet lamp devices are the main method of indoor disinfection, which has the characteristics of broad spectrum and economy. The principle is to destroy the nucleic acid and envelope protein of microorganisms through ultraviolet rays of a specific wavelength, usually 260nm, thereby inhibiting their division or replication, so as to achieve the purpose of killing microorganisms.

[0003] However, there are certain limitations in the actual application of ultraviolet light irradiation. First, to achieve a good disinfection effect, sufficient irradiation time must be ensured; second, the continuous effect of ultraviolet light irradiation disinfection is not ideal. Under normal circumstances, after 2 to 3 hours of indoor ultraviolet light irradiation disinfection, the total amount of air bacteria will return to the level before disinfection. Therefore, in order to achieve a good indoor disinfection effect, it is advisable to turn on the ultraviolet disinfection device several times a day, rather than the current clinical practice of only turning it on once or twice a day; third, ultraviolet rays are harmful to the eyes and skin. Long-term irradiation can easily cause photoelectric eye inflammation and photosensitive dermatitis. In mild cases, people will be afraid of light and tear, and their skin will itch. In severe cases, they may even become blind or their skin will ulcerate. Therefore, when indoor ultraviolet light disinfection is performed, it is best for people to leave the room; finally, during the irradiation process, ultraviolet light forms a large amount of ozone in the air, and ozone itself is oxidizing, which can cause peroxidation of the respiratory epithelial cells of people in the room, and a large amount of arachidonic acid will also be added during the period, which may cause upper respiratory tract inflammatory lesions in people in the room. Therefore, this disinfection method should be carried out while ensuring that no one is indoors.

[0004] Currently, the timing device of ultraviolet lamps in clinical practice is often placed in the disinfection room. Except for the person who turns on the ultraviolet lamp, other people outside cannot know the specific disinfection duration of the ultraviolet lamp. In addition, during the disinfection period, it is common for other people to mistakenly enter the disinfection room. Summary of the invention

[0005] The utility model aims to provide an ultraviolet lamp disinfection timing alarm device, through which people can know the remaining disinfection time outside the disinfection room, and when a person enters the disinfection room by mistake, the alarm will sound to remind the person to pay attention to protection and leave the disinfection room in time.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] The ultraviolet light disinfection timing alarm device consists of three parts: a program timer, a power adapter and a door suction alarm.

[0008] The power input end of the program timer is connected to AC220V, and the power output end of the program timer is connected to the power adapter; a timer is provided in the program timer, and the timer signal output end is connected to the base of the NPN transistor Q1, and the collector of the NPN transistor Q1 is connected to the inductor JL1, and the inductor JL1 controls the normally closed switch JG1 provided at the power input end, and when the NPN transistor Q1 is in the cut-off state, the normally closed switch JG1 is closed, and when the NPN transistor Q1 is in the on state, the normally closed switch JG1 is opened. R1 and R2 are provided in the program timer, and R1 is provided between the timer signal output end and the base of the NPN transistor Q1, and R2 is provided between the collector of the NPN transistor Q1 and the inductor JL1.

[0009] The power output end of the power adapter outputs 12V / 1A direct current and is connected to the door suction alarm; the power adapter is connected to electrolytic capacitors C1 and C2, the positive electrode of the electrolytic capacitor C1 is connected to Vin of the power adapter, the positive electrode of the electrolytic capacitor C2 is connected to Vout of the power adapter, and the negative electrode of C1, the negative electrode of C2 and the GND of the power adapter are grounded.

[0010] The door suction alarm includes a door suction switch K1, which is connected between the positive and negative poles of the power output of the power adapter. When the door suction switch K1 is in the closed state, the door suction switch K1 and the power adapter form a loop; the door suction alarm includes an alarm B1, which is connected in parallel with the door suction switch K1. When the door suction switch K1 is in the opened state, the alarm B1 and the power adapter form an alarm loop and the alarm sounds.

[0011] The alarm circuit of the door suction alarm includes alarm B1, NPN transistor Q2, NPN transistor Q3, resistors R4, R5, R6, and R7.

[0012] One end of resistor R4 is connected to the current output end of the suction switch K1, and the other end is connected to the base of NPN transistor Q2. The collector of NPN transistor Q2 is connected in series with R5 and then connected to the power output end of the power adapter, and the emitter of NPN transistor Q2 is grounded; one end of R6 is connected between R5 and the collector of NPN transistor Q2, and the other end is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the current output end of alarm B1, and the emitter of NPN transistor Q3 is grounded; the current input end of alarm B1 is connected in series with resistor R7, and then connected to Vout of the power adapter together with the current input ends of R5 and K1; the current output end of the door suction switch K1 is connected in series with R3 and then grounded.

[0013] The beneficial effects of the utility model are:

[0014] The device of the present invention comprises a program timer, a power adapter and a door suction alarm, and can be installed at the door of any room that needs to be disinfected, and has strong practicality, simple overall structure, low cost and good promotion prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a working principle diagram of the utility model.

[0016] Figure 2 It is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] The UV lamp disinfection timing alarm device consists of three parts: a program timer, a power adapter and a door suction alarm. Figure 1 shown.

[0018] The specific circuit structure is as follows Figure 2 As shown, JG1 is an AC220V switch, which is controlled by the Q1 switch circuit. Before the timer expires, Q1 is disconnected and JG1 is closed. At this time, T, D1~D4 and C1, C2, and U1 form a DC power supply, which is the output power supply voltage V1. K1, R3~R7, Q2, Q3, and B1 form an alarm circuit. When K1 is closed, that is, the door suction is closed, Q3 is disconnected and no alarm occurs; when K1 opens the door, Q3 is connected to alarm. (3) When the timer expires, Q1 is connected, JG1 disconnects the power supply, V1=0, and no alarm occurs regardless of whether K1 is closed or opened.

[0019] Specific:

[0020] The power input end of the program timer is connected to AC220V, and the power output end of the program timer is connected to the power adapter; a timer is provided in the program timer, and the timer signal output end is connected to the base of the NPN transistor Q1, and the collector of the NPN transistor Q1 is connected to the inductor JL1, and the inductor JL1 controls the normally closed switch JG1 provided at the power input end, and when the NPN transistor Q1 is in the cut-off state, the normally closed switch JG1 is closed, and when the NPN transistor Q1 is in the on state, the normally closed switch JG1 is opened. R1 and R2 are provided in the program timer, and R1 is provided between the timer signal output end and the base of the NPN transistor Q1, and R2 is provided between the collector of the NPN transistor Q1 and the inductor JL1.

[0021] The power output end of the power adapter outputs 12V / 1A direct current and is connected to the door suction alarm; the power adapter is internally connected with electrolytic capacitors C1 and C2, the positive electrode of the electrolytic capacitor C1 is connected to Vin of the power adapter, the positive electrode of the electrolytic capacitor C2 is connected to Vout of the power adapter, and the negative electrode of C1, the negative electrode of C2 and the GND of the power adapter are grounded.

[0022] The door suction alarm includes a door suction switch K1, which is connected between the positive and negative poles of the power output of the power adapter. When the door suction switch K1 is in the closed state, the door suction switch K1 and the power adapter form a loop; the door suction alarm includes an alarm B1, which is connected in parallel with the door suction switch K1. When the door suction switch K1 is in the opened state, the alarm B1 and the power adapter form an alarm loop and the alarm sounds.

[0023] The alarm circuit of the door suction alarm includes alarm B1, NPN transistor Q2, NPN transistor Q3, resistors R4, R5, R6, and R7. One end of resistor R4 is connected to the current output end of suction switch K1, and the other end is connected to the base of NPN transistor Q2. The collector of NPN transistor Q2 is connected in series with R5 and then connected to the power output end of the power adapter, and the emitter of NPN transistor Q2 is grounded; one end of R6 is connected between R5 and the collector of NPN transistor Q2, and the other end is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the current output end of alarm B1, and the emitter of NPN transistor Q3 is grounded; the current input end of alarm B1 is connected in series with resistor R7, and then connected to Vout of the power adapter together with the current input ends of R5 and K1; the current output end of the door suction switch K1 is connected in series with R3 and then grounded.

[0024] When using:

[0025] 1. Fix the door suction on the door frame and door leaf respectively, insert the door suction alarm adapter into the program timer, and connect the program timer to a 220V power supply.

[0026] 2. Set the program timing countdown mode, such as setting it to 1 hour. After starting the timing, the AC220V power supply and the 12V / 1A adapter connected to it will work within 1 hour to provide power for the door suction alarm. The door suction alarm will work normally. At this time, if the door is opened, the alarm will be triggered.

[0027] 3. After the 1-hour timing is up, the program timer turns off the AC220 output, and the 12V / 1A adapter connected to it is powered off, unable to provide power to the door suction alarm. The door suction alarm becomes invalid, and if the door is opened at this time, there will be no alarm.

Claims

1. Ultraviolet lamp disinfection timing alarm device, characterized by: It has three parts: program timer, power adapter and door suction alarm; The power input end of the program timer is connected to AC220V, and the power output end of the program timer is connected to the power adapter; a timer is provided in the program timer, and the timer signal output end is connected to the base of the NPN transistor Q1, and the collector of the NPN transistor Q1 is connected to the inductor JL1, and the inductor JL1 controls the normally closed switch JG1 provided at the power input end, and when the NPN transistor Q1 is in the cut-off state, the normally closed switch JG1 is closed, and when the NPN transistor Q1 is in the on state, the normally closed switch JG1 is opened; The power output terminal of the power adapter outputs 12V / maximum 1A DC and is connected to the door suction alarm; The door suction alarm includes a door suction switch K1, which is connected between the positive and negative poles of the power output of the power adapter. When the door suction switch K1 is in the closed state, the door suction switch K1 and the power adapter form a loop; the door suction alarm includes an alarm B1, which is connected in parallel with the door suction switch K1. When the door suction switch K1 is in the opened state, the alarm B1 and the power adapter form an alarm loop and the alarm sounds.

2. The ultraviolet lamp disinfection timing alarm device according to claim 1, characterized in that: The program timer is provided with R1 and R2, R1 is provided between the timer signal output terminal and the base of the NPN transistor Q1, and R2 is provided between the collector of the NPN transistor Q1 and the inductor JL1.

3. The ultraviolet lamp disinfection timing alarm device according to claim 1, characterized in that: The power adapter is connected with electrolytic capacitors C1 and C2, the positive electrode of electrolytic capacitor C1 is connected to Vin of the power adapter, the positive electrode of electrolytic capacitor C2 is connected to Vout of the power adapter, and the negative electrode of C1, the negative electrode of C2 and the GND of the power adapter are grounded.

4. The ultraviolet lamp disinfection timing alarm device according to claim 1, characterized in that: The alarm circuit of the door suction alarm includes an alarm B1, an NPN transistor Q2, an NPN transistor Q3, resistors R4, R5, R6, and R7; One end of the resistor R4 is connected to the current output end of the switch K1, and the other end is connected to the base of the NPN transistor Q2. The collector of the NPN transistor Q2 is connected in series with R5 and then connected to the power output end of the power adapter. The emitter of the NPN transistor Q2 is grounded. One end of R6 is connected between R5 and the collector of NPN transistor Q2, and the other end is connected to the base of NPN transistor Q3. The collector of NPN transistor Q3 is connected to the current output end of alarm B1, and the emitter of NPN transistor Q3 is grounded. The current input terminal of the alarm B1 is connected in series with the resistor R7, and then connected to the Vout of the power adapter together with the current input terminals of R5 and K1.

5. The ultraviolet lamp disinfection timing alarm device according to claim 1, characterized in that: The current output end of the door suction switch K1 is connected in series with R3 and then grounded.

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