CN209298879U - A kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus - Google Patents
A kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus Download PDFInfo
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- CN209298879U CN209298879U CN201821962446.2U CN201821962446U CN209298879U CN 209298879 U CN209298879 U CN 209298879U CN 201821962446 U CN201821962446 U CN 201821962446U CN 209298879 U CN209298879 U CN 209298879U
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- high voltage
- ion wind
- negative high
- wind apparatus
- voltage air
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Abstract
The utility model relates to a kind of EMI circuits of negative high voltage air-conditioning ion wind apparatus, belong to negative high voltage air-conditioning ion wind device field.EMI circuit includes fuse F1, temperature-sensitive NTC resistance R3, common mode inductance T1, varistor R4, R5 and R6, capacitor C1, C2 and C3, bleeder resistance R1 and R2 and vacuum discharge tube P1；Wherein, R3 can effectively alleviate rush of current of the 220V communication power supply when powering on, the leakage inductance and C1 of T1 forms differential mode filter and C2, C3 and T1 composition common-mode filter and can effectively inhibit to extraneous electromagnetic interference, R4, R5, R6 and P1 can play the role of anti-lightning surge voltage, R1 and R2 can play the purpose of static electricity discharge, and the EMI circuit substantially increases the reliability and safety of negative high voltage air-conditioning ion wind apparatus.
Description
Technical field
The utility model relates to a kind of negative high voltage air-conditioning ion wind apparatus, and in particular to the EMI of the installation's power source front end is (anti-
Electromagnetic interference) circuit.
Background technique
Currently, blower is the major impetus source of air-conditioner air supply device, but noise is larger when air-conditioning.New trend
It is to be blown using negative high voltage air-conditioning ion wind apparatus, the noise of air-conditioning can be substantially reduced, achieve the purpose that noiseless air-supply.
Constantly there can be anion to release during negative high voltage air-conditioning ion wind apparatus use, then cause negative high voltage empty
It is more and more to be transferred from the positive charge that sub- wind apparatus carries, negative high voltage air-conditioning ion wind apparatus upper contact part part, low pressure components etc. with
Voltage difference between alternating current part is higher and higher, discharges when may finally will cause human body touching button, casing, What is more
It may be more than the insulation performance limitation of some electronic components in negative high voltage air-conditioning ion wind device circuit, bring safety hidden
Suffer from.In addition, negative high voltage air-conditioning ion wind apparatus can generate certain electromagnetic interference, so being inhibited, and thunder is fought
The ability for hitting surge voltage will also there are certain requirements.
Utility model content
In view of this, the present invention provides a kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus, the EMI circuits
Can static electricity discharge, inhibit to improve negative height to extraneous electromagnetic interference and with certain anti-lightning surge voltage ability
Press the reliability and safety of air-conditioning ion wind apparatus.
To achieve the above object, the utility model is achieved through the following technical solutions: a kind of negative high voltage air-conditioning ion wind dress
The EMI circuit set, the EMI circuit include fuse F1, temperature-sensitive NTC resistance R3, common mode inductance T1, varistor R4, R5 and
R6, capacitor C1, C2 and C3, bleeder resistance R1 and R2 and vacuum discharge tube P1；Wherein, two windings in T1 are denoted as winding A
With winding B；
F1, R3, winding A and C2 are sequentially connected in series between the firewire and ground wire of communication power supply, and winding B and C3 successively go here and there
It is coupled between the zero curve of communication power supply and ground wire；Output terminals A of the connecting pin of winding A and C2 as the circuit, winding B with
The connecting pin of C3 is parallel between two output ends respectively as the output end B, R4 and C1 of the circuit；The one end R5 connects output end
It is grounded after A, other end series connection P1；The one end R6 connects output end B, another to be terminated between R5 and P1；The one end R1 connects output end
A, other end ground connection；The one end R2 connects output end B, other end ground connection.
Further, C2 and C3 is less than 4.7nF respectively, and T1 is greater than 5mH, and C1 is greater than 0.22uF.
Further, R4, R5, R6 select the varistor of pressure resistance 471V~486V respectively, P1 select pressure resistance 500V~
The vacuum discharge tube of 650V.
Further, R1 and R2 selects the high-tension resistive of pressure resistance 3KV or more respectively, and resistance value value range is respectively 2M Ω
~60M Ω.
When communication power supply just powers on, the resistance value of R3 is very big, thus can limit the defeated of 220V communication power supply
Enter electric current, while R3 can also generate heat, R3 is more and more warmmer over time, and resistance value is also smaller and smaller, is finally reached heat
Balance, so as to effectively alleviate rush of current of the 220V communication power supply when powering on, rush of current is normal less than 100 times
Operating current.
The leakage inductance and C1 of T1 forms differential mode filter, and C2, C3 and T1 form common-mode filter, the two filters can press down
The Conduction Interference for the 150KHz to 30MHz that negative high voltage air-conditioning ion wind apparatus processed generates, to effectively inhibit to extraneous electromagnetism
Interference.
Since the leakage current of R5 and R6 itself is larger, it is possible to be more than security restriction, therefore in its channel over the ground
Connect P1, and P1 can prevent the electric leakage of R5 and R6, but this cascaded structure will be slack-off to the reaction speed of lightning surge, in order to add
It is fast to protect speed, it joined R4 in circuit；When lightning surge occurs, R4 is first turned on, and then R5, R6, P1 are also switched on, to whole
The input voltage of a circuit plays limitation, that is, plays the role of anti-lightning surge voltage.
When imperfect earth, electrostatic can be accumulated in ground terminal and form very high voltage, and after R1 and R2 is set in circuit,
This voltage can be released to 220V AC network by the two resistance, ensure that the charge of ground terminal will not persistently tire out in this way
Meter, has achieved the purpose that static electricity discharge.
The utility model has the advantages that
EMI circuit structure described in the utility model is simple, can eliminate and take on negative high voltage air-conditioning ion wind apparatus body
The charge of band reduces the electromagnetic interference of electrostatic negative high voltage air-conditioning ion wind apparatus, the ability of its anti surge voltage is improved, thus greatly
The reliability and safety of negative high voltage air-conditioning ion wind apparatus are improved greatly.
Detailed description of the invention
Fig. 1 is the circuit diagram of EMI circuit described in embodiment.
Specific embodiment
The utility model is further elaborated with reference to the accompanying drawings and detailed description.
Embodiment 1
In order to eliminate the charge carried on negative high voltage air-conditioning ion wind apparatus body, electrostatic negative high voltage air-conditioning ion wind is reduced
The electromagnetic interference of device improves the ability of its anti surge voltage, present embodiments provides a kind of negative high voltage air-conditioning ion wind apparatus
EMI circuit, the EMI circuit include fuse F1, temperature-sensitive NTC resistance R3, common mode inductance T1, varistor R4, R5 and R6,
Capacitor C1, C2 and C3, bleeder resistance R1 and R2 and vacuum discharge tube P1, as shown in Figure 1；
Wherein, two windings in T1 are denoted as winding A and winding B；R3 chooses NTC 5D-9, and F1 chooses 250V, 1A insurance
Silk, the inductance of T1 determine by experiment, chooses 10mH in the present embodiment, and C1 selects the safety capacitor of 250V/0.22uF, C2 and
C3 selects the safety capacitor of 2.2nF, and R4, R5, R6 select 14D471K varistor, and P1 selects B8G600L gas-discharge tube, R1
Select pressure resistance 3KV and resistance value for the high-tension resistive of 2M Ω with R2；
F1, R3, winding A and C2 are sequentially connected in series between the firewire and ground wire of communication power supply, and winding B and C3 successively go here and there
It is coupled between the zero curve of communication power supply and ground wire；Output terminals A of the connecting pin of winding A and C2 as the circuit, winding B with
The connecting pin of C3 is parallel between two output ends respectively as the output end B, R4 and C1 of the circuit；The one end R5 connects output end
It is grounded after A, other end series connection P1；The one end R6 connects output end B, another to be terminated between R5 and P1；The one end R1 connects output end
A, other end ground connection；The one end R2 connects output end B, other end ground connection.
The working principle of the EMI circuit is as follows:
When communication power supply just powers on, the resistance value of R3 is very big, thus can limit the defeated of 220V communication power supply
Enter electric current, while R3 can also generate heat, R3 is more and more warmmer over time, and resistance value is also smaller and smaller, is finally reached heat
Balance, so as to effectively alleviate rush of current of the 220V communication power supply when powering on, rush of current is normal less than 100 times
Operating current；
The leakage inductance and C1 of T1 forms differential mode filter, and C2, C3 and T1 form common-mode filter, the two filters can press down
The Conduction Interference for the 150KHz to 30MHz that negative high voltage air-conditioning ion wind apparatus processed generates, to effectively inhibit to extraneous electromagnetism
Interference；
When lightning surge occurs, R4 is first turned on, and then R5, R6, P1 are also switched on, and is risen to the input voltage of entire circuit
Limitation has been arrived, that is, has played the role of anti-lightning surge voltage；
When imperfect earth, electrostatic can be accumulated in ground terminal and form very high voltage, and after R1 and R2 is set in circuit,
This voltage can be released to 220V AC network by the two resistance, ensure that the charge of ground terminal will not persistently tire out in this way
Meter, has achieved the purpose that static electricity discharge.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model
Protection scope.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all wrap
Containing being within the protection scope of the utility model.
Claims (4)
1. a kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus, it is characterised in that: the EMI circuit includes fuse F1, heat
Quick NTC resistance R3, common mode inductance T1, varistor R4, R5 and R6, capacitor C1, C2 and C3, bleeder resistance R1 and R2 and vacuum
Discharge tube P1；Wherein, two windings in T1 are denoted as winding A and winding B；
F1, R3, winding A and C2 are sequentially connected in series between the firewire and ground wire of communication power supply, winding B and C3 be sequentially connected in series in
Between the zero curve and ground wire of communication power supply；Output terminals A of the connecting pin of winding A and C2 as the circuit, winding B's and C3
Connecting pin is parallel between two output ends respectively as the output end B, R4 and C1 of the circuit；The one end R5 connects output terminals A, separately
It is grounded after one end series connection P1；The one end R6 connects output end B, another to be terminated between R5 and P1；The one end R1 connects output terminals A, separately
One end ground connection；The one end R2 connects output end B, other end ground connection.
2. the EMI circuit of negative high voltage air-conditioning ion wind apparatus according to claim 1, it is characterised in that: C2 and C3 difference
It is less than 4.7nF, T1 is greater than 5mH, and C1 is greater than 0.22uF.
3. the EMI circuit of negative high voltage air-conditioning ion wind apparatus according to claim 1, it is characterised in that: R4, R5, R6 points
Not Xuan Yong pressure resistance 471V~486V varistor, P1 select pressure resistance 500V~650V vacuum discharge tube.
4. the EMI circuit of negative high voltage air-conditioning ion wind apparatus according to claim 1, it is characterised in that: R1 and R2 difference
The high-tension resistive of pressure resistance 3KV or more is selected, resistance value value range is respectively 2M Ω~60M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962446.2U CN209298879U (en) | 2018-11-27 | 2018-11-27 | A kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962446.2U CN209298879U (en) | 2018-11-27 | 2018-11-27 | A kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209298879U true CN209298879U (en) | 2019-08-23 |
Family
ID=67646225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821962446.2U Active CN209298879U (en) | 2018-11-27 | 2018-11-27 | A kind of EMI circuit of negative high voltage air-conditioning ion wind apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209298879U (en) |
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2018
- 2018-11-27 CN CN201821962446.2U patent/CN209298879U/en active Active
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