CN2656180Y - Overvoltage protector for air conditioner of car - Google Patents
Overvoltage protector for air conditioner of car Download PDFInfo
- Publication number
- CN2656180Y CN2656180Y CN 03210059 CN03210059U CN2656180Y CN 2656180 Y CN2656180 Y CN 2656180Y CN 03210059 CN03210059 CN 03210059 CN 03210059 U CN03210059 U CN 03210059U CN 2656180 Y CN2656180 Y CN 2656180Y
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- circuit
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- resistance
- air conditioning
- safety device
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Abstract
The utility model relates to a vehicle air conditioner over pressure protection device. The vehicle air conditioner over pressure protection device comprises an independent voltage stabling power source and an over pressure protection circuit, the over pressure protection circuit is composed of a sampling filer, a buffer circuit, a super high pressure testing circuit, an over pressure testing circuit and a filter processing circuit and a drive circuit which are connected with the over pressure testing circuit, the input voltage is respectively connected with the super high pressure testing circuit and the over pressure testing circuit after going through the sampling filer and the buffer circuit, and the over pressure testing circuit is respectively connected with a power drive circuit after going through the filter processing circuit and the super high pressure test circuit. The utility model has the advantages that the usage of a simple circuit overcomes the deficit that the prior vehicle air conditioner over pressure protection device has shaking, vibration, false action and the like when being used, the device not only can be stably used in a cleaner electric environment, but also can be used stably and reliably in an environment that the vehicle and the like electric environment are quite poor, without generating false protection and vibration phenomenon.
Description
Technical field
The utility model relates to a kind of air conditioning for automobiles over-pressure safety device, belongs in the automobile air conditioning technology field.
Background technology
At present; existing over-pressure safety device is protected the power supply that blocks consumer after voltage is higher than certain point; for little its application of using electricity system of shake is feasible; but in voltage fluctuations such as automobiles, disturb when using under the very big electrical environment; because phenomenons such as some logics after not detecting through overvoltage, the jumping that Filtering Processing will produce consumer are trembled, vibration; also simultaneously can misoperation shorten the service life of consumer, therefore also there are the problems referred to above equally in the existing over-pressure safety device that is used for air conditioning for automobiles.
Summary of the invention
In order to overcome the shortcomings such as shake, vibration and misoperation that existing air conditioning for automobiles over-pressure safety device exists in use; provide a kind of and can either under cleaner electrical environment, stablize use; can can not produce the air conditioning for automobiles over-pressure safety device of error protection and oscillatory occurences at electrical environments such as automobile very stable, dependable service under the rugged environment again.
The technical solution of the utility model is: the air conditioning for automobiles over-pressure safety device is by independently constant voltage power suspply and overvoltage crowbar are formed; overvoltage crowbar is made up of sampling filter, buffer circuit, superhigh pressure testing circuit, over-voltage detection circuit and connected Filtering Processing circuit, driving circuit; input voltage is connected with superhigh pressure testing circuit, over-voltage detection circuit respectively behind sampling filter, buffer circuit, and over-voltage detection circuit output is connected with power driving circuit respectively with the superhigh pressure testing circuit behind the Filtering Processing circuit.
The principle of work of air conditioning for automobiles over-pressure safety device is earlier input voltage to be carried out sampling filter; two-way is divided in the buffering back: the one tunnel delivers to a superhigh pressure testing circuit of being made up of Schmidt's comparator circuit; produce superelevation and be pressed on not signal; superhigh pressure is then exported a high potential signal, does not have superhigh pressure then to export low-potential signal.The over-voltage detection circuit of also being made up of Schmidt's comparator circuit is delivered on another road, detect the overvoltage signal, by the Filtering Processing circuit, after filtering relatively, the output overvoltage signal, only keep just really being confirmed to be overvoltage in 5 10 seconds, just finally export a high potential in overvoltage, otherwise the output low-potential signal.Superhigh pressure, overvoltage output signal are delivered to the power driving circuit of being made up of pliotron and relay, by the normally closed contact disconnection of relay, have blocked the power supply of consumer, reach the purpose of overvoltage protection.The utility model has the advantages that with a simple circuit; overcome the shortcomings such as shake, vibration and misoperation that existing air conditioning for automobiles over-pressure safety device exists in use; this device can either be stablized use under cleaner electrical environment; can can not produce error protection and oscillatory occurences at electrical environments such as automobile very stable, dependable service under the rugged environment again.
Description of drawings
Fig. 1 is the schematic circuit diagram of embodiment 1 of the present utility model;
Fig. 2 is the schematic circuit diagram of embodiment 2 of the present utility model.
The specific embodiment
The concrete enforcement of the utility model scheme is done an explanation in conjunction with two embodiment:
Embodiment 1
By shown in Figure 1, IN24 be the input voltage positive pole, the OUT24 that need protection be passed through output voltage positive pole, GND that protection handles be protection input and output voltage negative pole, GD be fender guard constant voltage power suspply negative pole ,+the 12nd, the positive pole of fender guard constant voltage power suspply, R
0Be 1W resistance, R
1-R
20Be 1/8W resistance, C
0-C
1Be 100n/100V leaded multilayer ceramic capacitor, E
0-E
1Be 220 microfarads/100V chemical capacitor, D
0Be FR204 diode, D
1-D
4Be FR104 diode, VZ
0Be 12V/0.25W stabilivolt, VZ
1Be 501V/0.25W stabilivolt, T
1Be C2383 aerotron, JK
1It is the 15A/220 relay.Independently constant voltage power suspply is by zener diode VZ
0, electric capacity E
0, C
0Back one end series resistor R is connected in parallel
0, the other end is fender guard constant voltage power suspply negative pole GD, it is by diode D
0GND is formed by connecting with protection input and output voltage negative pole, at VZ
0Negative pole form over-pressure safety device constant voltage power suspply just+12, at VZ
0Positive pole form the negative pole of over-pressure safety device constant voltage power suspply.The both positive and negative polarity of this power supply connects 4,11 pin of IC, and IC is provided power supply.Filtering buffer circuit described in the scheme is by R
1, R
2The bleeder circuit, the R that form
3With electric capacity E
1Filter circuit of forming and buffering amplifier IC2A are formed by connecting R
1, R
2The bleeder circuit of forming carries out the dividing potential drop sampling to protection voltage, and this sampled voltage is divided into two the tunnel after the buffered of IC2A:
One the tunnel carries out HIGH PRESSURE TREATMENT through the superhigh pressure testing circuit, and the superhigh pressure testing circuit is by IC1D, resistance R
16, R
17The bleeder circuit of forming reaches by IC1D, input resistance R
14, the cross-over connection resistance R
15, output resistance R
18The Schmidt's comparator circuit that connects to form is formed.The voltage ratio that sampled voltage after buffered and Schmidt's comparator circuit set, really superpressure output high potential does not have superpressure output active potential.This output voltage is received the positive pole of diode D3, is linked in the driving circuit.
Overpressure treatment is carried out through the overvoltage testing circuit in another road, and over-voltage detection circuit is one by IC1B, resistance R
7, R
8The bleeder circuit, the input resistance R that form
5, the cross-over connection resistance R
6, output resistance R
9The Schmidt's comparator circuit that is formed by connecting.The voltage ratio that sampled voltage after buffered also sets with Schmidt's comparator circuit is the output high potential during than overvoltage, does not have overvoltage output active potential, and this output voltage is connected to the Filtering Processing circuit through diode D1, and the Filtering Processing circuit is by resistance R
11With electric capacity E
2The filter circuit of forming and by R
12, R
13And Schmidt's comparator circuit that IC1C forms is formed by connecting.Through the output of the overvoltage after the Filtering Processing, by resistance R 19 ground connection, 5-10 overvoltage occurs be output as high potential second continuously, otherwise is output as active potential.This output connects driving circuit by diode D2.
Enter driving circuit at last through high pressure, superhigh pressure after the logical process.Power driving circuit is by resistance R
20Through stabilivolt VZ
1With aerotron T
1Base stage connect aerotron T
1Collecting electrode with and be connected to protection diode D
4Relay J K
1The line bag be formed by connecting.Diode D
2, D
3Negative pole be connected to resistance R after linking to each other
20An end, the other end of this resistance is connected to stabilivolt VZ
1Negative pole, positive pole is connected to aerotron T
1Base stage, the grounded emitter of aerotron, the collecting electrode of aerotron is received an end of relay line bag, the line bag other end is received the IN24 power end, protection diode D
4Negative pole connects IN24, the anodal transistor collector that connects.The contact center contact of relay is connected to the IN24 power end, and normally closed interlock is exported, and output to consumer, is OUT24 through the voltage of over protection.Superhigh pressure, the parallel connection of overvoltage output signal drive aerotron T together
1Make relay line Bao Dedian, the normally closed contact of relay disconnects, thereby the power supply that has blocked consumer reaches the purpose of overvoltage.
Embodiment 2
By shown in Figure 2, described independently constant voltage power suspply also can be by zener diode VZ
0, electric capacity E
0, C
0Back one end series resistor R is connected in parallel
0, the other end directly is formed by connecting with protection input and output voltage negative pole GND.Described power driving circuit also can be by resistance R
20Directly and aerotron T
1Base stage connect aerotron T
1Collecting electrode and relay J K
1The line bag be formed by connecting.Different is to have cancelled diode D for embodiment 2 and embodiment 1
0, zener diode VZ
1, the GND of the actual Fig. 1 of being exactly, GD negative pole link together.Cancellation zener diode VZ
1, make to drive simply.
Claims (9)
1, a kind of air conditioning for automobiles over-pressure safety device; it is characterized in that; it is by independently constant voltage power suspply and overvoltage crowbar are formed; overvoltage crowbar is made up of sampling filter, buffer circuit, superhigh pressure testing circuit, over-voltage detection circuit and connected Filtering Processing circuit, driving circuit; input voltage is connected with superhigh pressure testing circuit, over-voltage detection circuit respectively behind sampling filter, buffer circuit, and over-voltage detection circuit output is connected with power driving circuit respectively with the superhigh pressure testing circuit behind the Filtering Processing circuit.
2, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described independently constant voltage power suspply is by zener diode VZ
0, electric capacity E
0, C
0Back one end series resistor R is connected in parallel
0, the other end is fender guard constant voltage power suspply negative pole GD, it is by diode D
0GND is formed by connecting with protection input and output voltage negative pole.
3, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described filtering buffer circuit is by R
1, R
2The bleeder circuit, the R that form
3With electric capacity E
1Filter circuit of forming and buffering amplifier IC2A are formed by connecting.
4, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described superhigh pressure testing circuit is by IC1D, resistance R
16, R
17The bleeder circuit of forming reaches by IC1D, input resistance R
14, the cross-over connection resistance R
15, output resistance R
18The Schmidt's comparator circuit that connects to form is formed.
5, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described over-voltage detection circuit is one by IC1B, resistance R
7, R
8The bleeder circuit, the input resistance R that form
5, the cross-over connection resistance R
6, output resistance R
9The Schmidt's comparator circuit that is formed by connecting.
6, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described Filtering Processing circuit is by resistance R
11With electric capacity E
2The filter circuit of forming and by R
12, R
13And Schmidt's comparator circuit that IC1C forms is formed by connecting.
7, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described power driving circuit is by resistance R
20Through stabilivolt VZ
1With aerotron T
1Base stage connect, the collecting electrode of aerotron T1 with and be connected to protection diode D
4Relay J K
1The line bag be formed by connecting.
According to claim 1,2 described air conditioning for automobiles over-pressure safety devices, it is characterized in that 8, described independently constant voltage power suspply also can be by zener diode VZ
0, electric capacity E
0, C
0Back one end series resistor R is connected in parallel
0, the other end directly is formed by connecting with protection input and output voltage negative pole GND.
9, air conditioning for automobiles over-pressure safety device according to claim 1 is characterized in that, described power driving circuit also can be by resistance R
20Directly and aerotron T
1Base stage connect aerotron T
1Collecting electrode and relay J K
1The line bag be formed by connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210059 CN2656180Y (en) | 2003-08-27 | 2003-08-27 | Overvoltage protector for air conditioner of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03210059 CN2656180Y (en) | 2003-08-27 | 2003-08-27 | Overvoltage protector for air conditioner of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656180Y true CN2656180Y (en) | 2004-11-17 |
Family
ID=34325304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03210059 Expired - Lifetime CN2656180Y (en) | 2003-08-27 | 2003-08-27 | Overvoltage protector for air conditioner of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656180Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738139A (en) * | 2013-12-21 | 2014-04-23 | 博耐尔汽车电气系统有限公司 | Automotive air conditioning air volume control system for overvoltage protection |
-
2003
- 2003-08-27 CN CN 03210059 patent/CN2656180Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738139A (en) * | 2013-12-21 | 2014-04-23 | 博耐尔汽车电气系统有限公司 | Automotive air conditioning air volume control system for overvoltage protection |
| CN103738139B (en) * | 2013-12-21 | 2016-03-16 | 博耐尔汽车电气系统有限公司 | A kind of automobile air-container air quantity control system of overvoltage protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI JIALENG SONGZHI AUTOMOBILE AIR CONDITIONI Free format text: FORMER NAME OR ADDRESS: JIALENG SONGZHI AUTOMOBILE AIR-CONDITIONER CO., LTD., SHANGHAI |
|
| CP03 | Change of name, title or address |
Address after: No. 588 Spring Road, Xhenzhuang Industrial Zone, Shanghai, China: 201108 Patentee after: Shanghai Songz Automobile Air Conditioning Co., Ltd. Address before: No. 588 Spring Road, Xhenzhuang Industrial Zone, Shanghai, China: 201108 Patentee before: Shanghai Jialeng Songzhi Automobile Air-conditioning Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130827 Granted publication date: 20041117 |