CN204696656U - Freezing type drier control circuit - Google Patents
Freezing type drier control circuit Download PDFInfo
- Publication number
- CN204696656U CN204696656U CN201520443915.XU CN201520443915U CN204696656U CN 204696656 U CN204696656 U CN 204696656U CN 201520443915 U CN201520443915 U CN 201520443915U CN 204696656 U CN204696656 U CN 204696656U
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- China
- Prior art keywords
- switch
- stop
- contactor
- blower fan
- serially connected
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Drying Of Solid Materials (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses a kind of freezing type drier control circuit, comprise cold medium compressor, first blower fan, second blower fan and electronic drain valve, cold medium compressor is successively by the coil of thermal relay, the normally opened contact switch of the first A.C. contactor is connected with the side of air switch, control loop comprises start and stop branch road, start and stop branch road is serially connected with starting switch, halt switch, the coil of the first A.C. contactor and the normally-closed contact switch of thermal relay, electronic drain valve and start and stop branch circuit parallel connection, second blower fan is connected with this side of air switch by the normally opened contact switch of the second A.C. contactor, control loop also comprises the detection branch with start and stop branch circuit parallel connection, detection branch is serially connected with the coil of pressure switch and the second A.C. contactor, start and stop loop is also serially connected with high pressure escape protection switch.The utility model can open second blower fan automatically according to himself force value, and closes drying machine when hypertonia.
Description
Technical field
The utility model relates to a kind of drying machine, and more particularly, it relates to a kind of freezing type drier control circuit.
Background technology
Freezing type drier has used physical principle, and the moisture in compressed air is refrigerated to below dew point, makes it the dried-air drier of separating out from air.Be limited to the freezing point temperature of water, its dew point temperature can close to 0 degree in theory, actual conditions, and good freeze drier dew point temperature is generally at about 5 degree.
Freezing type drier generally can arrange two blower fans, when drying machine normally works, only need a fan starting, when the force value of drying machine is higher than certain value, need to start another one blower fan, by reducing the temperature of dryer inner to reduce the pressure of dryer inner.At present drying machine on the market, staff can only be seen drying by Pressure gauge the atmospheric pressure value of machine.This control mode, once staff neglects one's duties, opens second blower fan not in time, drying machine may be caused because internal pressure is too high to occur serious fault.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of freezing type drier control circuit, can automatically open second blower fan according to himself force value, and closes drying machine when hypertonia.
For achieving the above object, the utility model provides following technical scheme:
A kind of freezing type drier control circuit, comprise cold medium compressor, first blower fan, second blower fan and electronic drain valve, cold medium compressor successively by thermal relay coil, the normally opened contact switch of the first A.C. contactor is connected with the side of air switch, the opposite side of air switch is connected with electrical network, first blower fan is directly connected with this side of air switch, one from this side of air switch is provided with control loop between phase line and the zero line of electrical network, described control loop comprises start and stop branch road, described start and stop branch road is serially connected with starting switch, halt switch, the coil of described first A.C. contactor and the normally-closed contact switch of described thermal relay, described electronic drain valve and start and stop branch circuit parallel connection, start and stop branch circuit parallel connection has power supply indicator, run indicator is connected between starting switch and zero line, described second blower fan is connected with this side of air switch by the normally opened contact switch of the second A.C. contactor, described control loop also comprises the detection branch with start and stop branch circuit parallel connection, described detection branch is serially connected with the coil of pressure switch and described second A.C. contactor, described start and stop loop is also serially connected with high pressure escape protection switch.
Further, described control loop also comprises and indicates loop with first of start and stop branch circuit parallel connection, described first instruction loop is serially connected with normally opened contact switch and first indicator light of described thermal relay.
Further, the normal-closed end of described high pressure escape protection switch is serially connected with described start and stop branch road, and often opening between side and zero line of described high pressure escape protection switch is serially connected with the second indicator light.
Further, this side of described air switch is also connected with phase sequence relay, and the normally opened contact switch series of phase sequence relay is connected in start and stop branch road.
Compared with prior art, the utility model has the advantages that: by arranging detection branch, and in detection branch, be serially connected with the coil of pressure switch and the second A.C. contactor, so, when pressure switch detects the force value of drying machine higher than preset value, closed conducting, makes the coil of the second A.C. contactor obtain electric, the normally opened contact switch of the second AC relay closes simultaneously, makes the second blower fan energising work.In addition, when the force value of drying machine is too high, the plug-in strip of high pressure escape protection switch jumps to often leaves side, makes the coil losing electricity of the first AC relay, and the normally opened contact switch of the second AC relay disconnects simultaneously, and cold medium compressor power-off is shut down.
Accompanying drawing explanation
Fig. 1 is the electric diagram of control circuit in the utility model.
Reference numeral: 100, start and stop branch road, the 200, detection branch, 300, first instruction loop.
Embodiment
With reference to Fig. 1, embodiment of the present utility model is described further.
A kind of freezing type drier control circuit, comprise cold medium compressor COMP, first blower fan CF1, second blower fan CF2 and electronic drain valve SOL, cold medium compressor COMP successively by thermal relay FR coil, the normally opened contact switch of the first A.C. contactor KM1 is connected with the side of air switch QS1-2, the opposite side of air switch QS1-2 is connected with electrical network, first blower fan CF1 is directly connected with this side of air switch QS1-2, one from this side of air switch QS1-2 is provided with control loop between phase line and the zero line of electrical network, control loop comprises start and stop branch road, start and stop branch road is serially connected with starting switch SS, halt switch ST, the coil of the first A.C. contactor KM1 and the normally-closed contact switch of thermal relay FR, electronic drain valve SOL and start and stop branch circuit parallel connection, start and stop branch circuit parallel connection has power supply indicator L3, run indicator L4 is connected between starting switch SS and zero line, second blower fan CF2 is connected with this side of air switch QS1-2 by the normally opened contact switch of the second A.C. contactor KM2, control loop also comprises the detection branch with start and stop branch circuit parallel connection, detection branch is serially connected with the coil of pressure switch PS2 and the second A.C. contactor KM2, start and stop loop is also serially connected with high pressure escape protection switch PS1.
By arranging detection branch, and in detection branch, be serially connected with the coil of pressure switch PS2 and the second A.C. contactor KM2, so, when pressure switch PS2 detects the force value of drying machine higher than preset value, closed conducting, make the coil of the second A.C. contactor KM2 obtain electric, the normally opened contact switch of the second AC relay closes simultaneously, makes the second blower fan CF2 energising work.In addition, when the force value of drying machine is too high, the plug-in strip of high pressure escape protection switch PS1 jumps to often leaves side, makes the coil losing electricity of the first AC relay, and the normally opened contact switch of the second AC relay disconnects simultaneously, and cold medium compressor COMP power-off is shut down.Circuit breaker Q S2 is the master switch of control loop.
In the present embodiment, control loop also comprises and indicates loop with first of start and stop branch circuit parallel connection, the first instruction loop is serially connected with normally opened contact switch and the first indicator light L1 of thermal relay FR.
In this enforcement, the normal-closed end of high pressure escape protection switch PS1 is serially connected with start and stop branch road, and often opening between side and zero line of high pressure escape protection switch PS1 is serially connected with the second indicator light L2.
In the present embodiment, this side of air switch QS1-2 is also connected with phase sequence relay XJ, and the normally opened contact switch series of phase sequence relay XJ is connected in start and stop branch road.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. a freezing type drier control circuit, comprise cold medium compressor, first blower fan, second blower fan and electronic drain valve, cold medium compressor successively by thermal relay coil, the normally opened contact switch of the first A.C. contactor is connected with the side of air switch, the opposite side of air switch is connected with electrical network, first blower fan is directly connected with this side of air switch, one from this side of air switch is provided with control loop between phase line and the zero line of electrical network, described control loop comprises start and stop branch road, described start and stop branch road is serially connected with starting switch, halt switch, the coil of described first A.C. contactor and the normally-closed contact switch of described thermal relay, described electronic drain valve and start and stop branch circuit parallel connection, start and stop branch circuit parallel connection has power supply indicator, run indicator is connected between starting switch and zero line, it is characterized in that, described second blower fan is connected with this side of air switch by the normally opened contact switch of the second A.C. contactor, described control loop also comprises the detection branch with start and stop branch circuit parallel connection, described detection branch is serially connected with the coil of pressure switch and described second A.C. contactor, described start and stop loop is also serially connected with high pressure escape protection switch.
2. freezing type drier control circuit according to claim 1, it is characterized in that, described control loop also comprises and indicates loop with first of start and stop branch circuit parallel connection, described first instruction loop is serially connected with normally opened contact switch and first indicator light of described thermal relay.
3. freezing type drier control circuit according to claim 1, is characterized in that, the normal-closed end of described high pressure escape protection switch is serially connected with described start and stop branch road, and often opening between side and zero line of described high pressure escape protection switch is serially connected with the second indicator light.
4. freezing type drier control circuit according to claim 1, is characterized in that, this side of described air switch is also connected with phase sequence relay, and the normally opened contact switch series of phase sequence relay is connected in start and stop branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443915.XU CN204696656U (en) | 2015-06-24 | 2015-06-24 | Freezing type drier control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443915.XU CN204696656U (en) | 2015-06-24 | 2015-06-24 | Freezing type drier control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696656U true CN204696656U (en) | 2015-10-07 |
Family
ID=54236909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520443915.XU Expired - Fee Related CN204696656U (en) | 2015-06-24 | 2015-06-24 | Freezing type drier control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204696656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099563A (en) * | 2018-09-10 | 2018-12-28 | 泰豪科技股份有限公司 | A kind of control circuit and dehumidifier |
-
2015
- 2015-06-24 CN CN201520443915.XU patent/CN204696656U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099563A (en) * | 2018-09-10 | 2018-12-28 | 泰豪科技股份有限公司 | A kind of control circuit and dehumidifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |