CN207884276U - Cooling-water machine control circuit - Google Patents
Cooling-water machine control circuit Download PDFInfo
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- CN207884276U CN207884276U CN201820368679.3U CN201820368679U CN207884276U CN 207884276 U CN207884276 U CN 207884276U CN 201820368679 U CN201820368679 U CN 201820368679U CN 207884276 U CN207884276 U CN 207884276U
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Abstract
The utility model discloses a kind of cooling-water machine control circuits, including AC power, temperature controller, alarm module, thermistor, high-voltage switch gear, low tension switch, water pump, compressor, the first thermal overload relay, the second thermal overload relay.The utility model by being arranged integrated alarm module in circuit, alarm module can abnormal, water pump or overload of compressor, situations such as compressor high-low pressure is abnormal, be detected and alarm to phase sequence, the personnel of being conveniently operated have found and handle dependent failure, easy to produce is normally carried out, and eliminates production safety hidden danger.
Description
Technical field
The utility model is related to a kind of control circuit more particularly to a kind of cooling-water machine control circuits.
Background technology
Cooling-water machine is a kind of machine of output low temperature chilled water, in various industrial productions, due to machinery, mold and chemistry
Reaction etc., when work, can all generate heat, and when temperature is more than the Bearing degree of material, product quality is with regard to unstable.With plastic cement
For product, plastic product accounts for 80% of whole cycle or more cooling time in production, the importance of the reduction of cooling time
It can be seen that chilled water can absorb heat in time, mould-cavity temperature is made quickly to reduce, accelerate product approval, shortened open time, carry
High efficiency.
Function or warning function of the existing cooling-water machine control circuit generally without automatic alarm are excessively thin, energy
The failure enough detected is limited, since circuit will appear various failures in the process of running, when circuit breaks down, such as
Fruit cooling-water machine control circuit can not make dependent failure alarm, being not only normally carried out for production be given to make troubles, but also be easy
Bring production safety hidden danger.
Therefore, it is necessary to a kind of new cooling-water machine control circuit be designed, to solve the deficiencies in the prior art.
Utility model content
It is integrated by being arranged in circuit the purpose of this utility model is to provide a kind of new cooling-water machine control circuit
Alarm module, various faults type can be detected and alarmed.
For above-mentioned purpose, the utility model uses following technical scheme：
A kind of cooling-water machine control circuit, including：AC power, the AC power are powered in a manner of three-phase five-wire mode；
Temperature controller, alarm module, built-in phase sequence relay and protection switch, three firewires and the phase of the AC power
Sequence protector connects, and a firewire and the protection switch of the AC power connect, and the protection switch is for controlling
State the power supply supply of temperature controller；Thermistor is connect with the temperature controller；High-voltage switch gear, with the alarm module
Connection；Low tension switch is connect with the alarm module；Water pump is connect with three firewires of the AC power；Compressor, with
Three firewires of the AC power connect；First thermal overload relay, including first heating element and the first normally opened contact, institute
It states first heating element to connect with the water pump, first normally opened contact is connect with the alarm module；Second thermal overload after
Electric appliance, including second heatiing element and the second normally opened contact, the second heatiing element are connect with the compressor, and described second
Normally opened contact is connect with the alarm module.
Further, further include the first A.C. contactor and the second A.C. contactor, first A.C. contactor includes the
One main normally opened contact and first coil, second A.C. contactor include the second main normally opened contact and the second coil, and described the
One main normally opened contact is connect with the water pump, and the second main normally opened contact is connect with the compressor, first thermal overload
Relay further includes the first normally-closed contact, and second thermal overload relay further includes the second normally-closed contact, the first coil
It connects with first normally-closed contact, second coil is connected to the temperature control after connecting with second normally-closed contact
Device.
Further, further include frost prevention switch, first A.C. contactor further includes the first auxiliary normally opened contact, and described
One auxiliary normally opened contact is connected with the frost prevention switch.
Further, further include first cut for switch and second cut for switch, described first cut for switch with it is described protect open
Connection connects, described second cut for switch connect with the frost prevention switch.
Further, described first cut for switch include the first indicator light, described second cut for switch include the second indicator light.
Further, further include heating tape, second A.C. contactor further includes the second auxiliary normally-closed contact, and described second
Assist normally-closed contact and the heating band connection.
Further, further include fuse, the fuse is connected with protection switch.
The beneficial effects of the utility model have：Alarm module is provided in circuit, alarm module can be to phase sequence exception, water
Pump or overload of compressor, situations such as compressor high-low pressure is abnormal are detected and alarm, and the personnel of being conveniently operated have found and handle phase
Failure is closed, easy to produce is normally carried out, and eliminates production safety hidden danger.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the circuit diagram of 10 parts in Fig. 1；
Fig. 3 is the circuit diagram of 20 parts in Fig. 1.
Drawing reference numeral explanation：Temperature controller A1；Alarm module A2；Phase sequence relay A3；Thermistor RT；High-voltage switch gear
S1；Low tension switch S2；Protect switch S3；Frost prevention switch S4；First cuts for switch S5；Second cuts for switch S6；Temperature control contact S7；
Water pump M1；Compressor M2；Firewire L1, L2, L3；Zero curve N；Ground wire PE；First heating element FR1-1；First normally opened contact FR1-
2；First normally-closed contact FR1-3；Second heatiing element FR2-1；Second normally opened contact FR2-2；Second normally-closed contact FR2-3；The
One main normally opened contact KM1-1；First coil KM1-2；First auxiliary normally opened contact KM1-3；Second main normally opened contact KM2-1；The
Two coil KM2-2；Second auxiliary normally-closed contact KM2-3；First indicator light H1；Second indicator light H2；Heating tape EH；Fuse
FU。
Specific implementation mode
For ease of more fully understanding the purpose, structure, characteristics and efficacy of the utility model, in conjunction with attached drawing and specifically
The utility model is described in further detail for embodiment.
As shown in Figure 1, a kind of cooling-water machine control circuit of the utility model preferred embodiment, including AC power, temperature
Controller A1, alarm module A2, thermistor RT, high-voltage switch gear S1, low tension switch S2, water pump M1, compressor M2, the first hot mistake
Carry relay, the second thermal overload relay.
As shown in Figures 2 and 3, AC power is powered in a manner of three-phase five-wire mode, i.e., AC power draws three firewires
L1, L2, L3, a zero curve N and a ground wire PE.Phase sequence relay A3 built in alarm module A2 and protection switch S3, is handed over
Three firewire L1~L3 in galvanic electricity source are connect with phase sequence relay A3.Phase sequence relay A3 is used for detection device power supply, is lacked
Mutually protection, anti-phase protection and under-voltage protection.A piece firewire L1 of AC power is connect with protection switch S3, and protection switch S3 is used for
Control the power supply supply of temperature controller A1.Thermistor RT is connect with temperature controller A1, and thermistor RT is used for detection system
System environment temperature, and related temperature signals are transmitted to temperature controller A1, temperature controller A1 receives coherent signal, and display is worked as
Preceding system ambient temperature.
In the present embodiment, alarm module A2 is integrated circuit board.Alarm module A2 is limited by Zhongshan city essence port electric appliance
Company provides, model PC (ST-4T).The model MTR122TIRE of temperature controller A1.
High-voltage switch gear S1 is connect with alarm module A2, and low tension switch S2 is connect with alarm module A2.High-voltage switch gear S1 and low
The S2 that compresses switch is respectively used to the high pressure conditions and low-pressure state of detection compressor M2, and high-voltage switch gear S1 is used to carry out compressor M2
High voltage protective, low tension switch S2 are used to carry out low-voltage variation to compressor M2.Water pump M1 and three firewire L1 of AC power~
Three firewire L1~L3 connections of L3 connections, compressor M2 and AC power.In cooling-water machine field, water pump M1 and compressor M2
Common knowledge is act as played in cooling-water machine, details are not described herein.
First thermal overload relay includes first heating element FR1-1 and the first normally opened contact FR1-2, first heating element
FR1-1 is connect with water pump M1, and the first normally opened contact FR1-2 is connect with alarm module A2.Second thermal overload relay includes second
Heater element FR2-1 and the second normally opened contact FR2-2, second heatiing element FR2-1 are connect with compressor M2, the second normally opened contact
FR2-2 is connect with alarm module A2.
The alarm principle of the utility model is as follows：
(1) phase sequence is alarmed.Alarm module A2 is internally integrated controller (not shown), alarm (not shown) and malfunction coefficient
Device (not shown), when the phase sequence of AC power occurs abnormal, phase sequence relay A3 detects relevant abnormalities, and coherent signal is passed
To controller, controller receives coherent signal so that alarm starts to alarm, while protection switch S3 is disconnected, and equipment is stopped
It only runs, fault detector shows current fault type.
(2) high-low pressure is alarmed.When compressor M2 works in normal pressure limit, high-voltage switch gear S1 and low tension switch
S2 is in closed state.When there is High Abnormal Pressure or ultra-low pressure in compressor M2, high-voltage switch gear S1 or low tension switch S2 by
Closed state switchs to off-state, and controller senses the variation of coherent signal, and control alarm is alarmed, while to protect
It protects switch S3 to disconnect, equipment is out of service, and fault detector shows current fault type.
(3) overload-alarm.When the circuit branch where water pump M1 or compressor M2 is overloaded, the first normally opened contact
FR1-2 or the second normally opened contact FR2-2 switchs to closed state by off-state, and controller senses the variation of coherent signal, report
Alert device starts to alarm under the action of controller, while switch S3 being protected to disconnect, and equipment is out of service, and fault detector, which is shown, works as
Preceding fault type.
The utility model further includes the first A.C. contactor and the second A.C. contactor, and the first A.C. contactor and second are handed over
Stream contactor is respectively used to control water pump M1 and compressor M2.First A.C. contactor includes the first main normally opened contact
KM1-1 and first coil KM1-2, the second A.C. contactor include the second main normally opened contact KM2-1 and the second coil KM2-2, the
One main normally opened contact KM1-1 is connect with water pump M1, and the second main normally opened contact KM2-1 is connect with compressor M2, the first thermal overload after
Electric appliance further includes the first normally-closed contact FR1-3, and the second thermal overload relay further includes the second normally-closed contact FR2-3, first coil
KM1-2 and the first normally-closed contact FR1-3 series connection, the second coil KM2-2 are connected to temperature after connecting with the second normally-closed contact FR2-3
Controller A1.
When cooling-water machine works, first coil KM1-2 is powered, and the first main normally opened contact KM1-1 is closed, and water pump M1 starts work
Make, while thermistor RT is detected current environment temperature, when environment temperature reaches preset value, temperature controller A1
Internal temperature control contact S7 starts to act so that the second coil KM2-2 is initially powered up, and the second main normally opened contact KM2-1 is closed, pressure
Contracting machine M2 starts to work.In addition, in order to improve the reliability of circuit, when circuit overloads when alarm module A2 failures, first often
Closed contact FR1-3 or the second normally-closed contact FR2-3 will disconnect, first coil KM1-2 or the second coil KM2-2 power-off so that water
It is out of service to pump M1 or compressor M2.
The utility model further includes frost prevention switch S4, and the first A.C. contactor further includes the first auxiliary normally opened contact KM1-3,
First auxiliary normally opened contact KM1-3 connects with frost prevention switch S4.Temperature value is preset, when temperature is normal, frost prevention switch S4
In closed state, and the first auxiliary normally opened contact KM1-3 is also at closed state under the action of first coil KM1-2, makes
It obtains the second coil KM2-2 and is in normal power-up state.When temperature is less than preset value, frost prevention switch S4 is disconnected automatically, and then is made
The second coil KM2-2 power-off is obtained, compressor M2 is out of service, thus prevents compressor M2 from running at a too low temperature.
The utility model further includes first cutting to cut for switch S5 and second and replacing switch S6, and first cuts and opened with protection for switch S5
S3 connections are closed, second cuts and connect with frost prevention switch S4 for switch S6.First cuts to cut for switch S5 and second and passes through for switch S6
It is controlled by hand, first cuts the energization for being mainly used for control first coil KM1-2 for switch S5, that is, controls the fortune of water pump M1
Row, second cuts the energization for being mainly used for the second coil KM2-2 for switch S6, that is, controls the operation of compressor M2.Pass through setting the
All are cut for switch S5 and second and replace switch S6, facilitate and manually control the working condition of water pump M1 and compressor M2.
First to cut for switch S5 include the first indicator light H1, and second to cut for switch S6 include the second indicator light H2, the first finger
Show that lamp H1 is used to indicate first and cuts the state for replacing switch S5, the second indicator light H2 is used to indicate second and cuts the state for replacing switch S6.
When first, which cuts, is closed for switch S5, the first indicator light H1 is bright, and when second, which cuts, is closed for switch S6, the second indicator light H2 is bright,
Thus it is conveniently operated the state that personnel intuitively switch.
The utility model further includes heating tape EH, and the second A.C. contactor further includes the second auxiliary normally-closed contact KM2-3, the
Two auxiliary normally-closed contact KM2-3 are connect with heating tape EH, i.e., when the temperature is too low, frost prevention switch S4 is disconnected, the second coil KM2-2
Power-off, the second auxiliary normally-closed contact KM2-3 restore closed state by off-state, and heating tape EH starts to work so that compressor
M2 lubricating oil keeps certain temperature, reduces the ratio that refrigerant dissolves in lubricating oil, prevents oil viscous with refrigerant mixture
It spends greatly so that the compressor M2 resistances of start are big, to be protected to compressor M2.
The utility model further includes fuse FU, and fuse FU is connect with protection switch S3.Fuse FU is for preventing electricity
It flows through greatly, each electronic equipment is damaged.
Detailed description above is only the explanation of the preferred embodiment of the utility model, and non-therefore limitation the utility model is specially
Sharp range, so, all with this creation specification and diagramatic content institute, equivalence techniques change for it, and it is specially to be both contained in this creation
In sharp range.
Claims (7)
1. a kind of cooling-water machine control circuit, which is characterized in that including：
AC power, the AC power are powered in a manner of three-phase five-wire mode；
Temperature controller,
Alarm module, built-in phase sequence relay and protection switch, three firewires and the phase sequence of the AC power
Device connects, and a firewire and the protection switch of the AC power connect, and the protection switch is for controlling the temperature
The power supply of controller is supplied；
Thermistor is connect with the temperature controller；
High-voltage switch gear is connect with the alarm module；
Low tension switch is connect with the alarm module；
Water pump is connect with three firewires of the AC power；
Compressor is connect with three firewires of the AC power；
First thermal overload relay, including first heating element and the first normally opened contact, the first heating element and the water
Pump connection, first normally opened contact are connect with the alarm module；
Second thermal overload relay, including second heatiing element and the second normally opened contact, the second heatiing element and the pressure
Contracting machine connects, and second normally opened contact is connect with the alarm module.
2. cooling-water machine control circuit as described in claim 1, it is characterised in that：Further include that the first A.C. contactor and second are handed over
Contactor is flowed, first A.C. contactor includes the first main normally opened contact and first coil, the second A.C. contactor packet
The second main normally opened contact and the second coil are included, the first main normally opened contact is connect with the water pump, and second master is normally opened to be touched
Point is connect with the compressor, and first thermal overload relay further includes the first normally-closed contact, the second thermal overload relay
Device further includes the second normally-closed contact, the first coil and first normally-closed contact series connection, second coil and described the
It is connected to the temperature controller after the series connection of two normally-closed contacts.
3. cooling-water machine control circuit as claimed in claim 2, it is characterised in that：Further include frost prevention switch, first exchange
Contactor further includes the first auxiliary normally opened contact, and the first auxiliary normally opened contact is connected with the frost prevention switch.
4. cooling-water machine control circuit as claimed in claim 3, it is characterised in that：Further include first cutting and cutting and replace for switch and second
Switch, described first cut for switch with the protection switch connect, described second cut for switch connect with the frost prevention switch.
5. cooling-water machine control circuit as claimed in claim 4, it is characterised in that：Described first cut for switch include first indicate
Lamp, described second cut for switch include the second indicator light.
6. cooling-water machine control circuit as claimed in claim 2, it is characterised in that：Further include heating tape, second exchange connects
Tentaculum further includes the second auxiliary normally-closed contact, the second auxiliary normally-closed contact and the heating band connection.
7. cooling-water machine control circuit as described in claim 1, it is characterised in that：Further include fuse, the fuse and institute
State protection switch connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368679.3U CN207884276U (en) | 2018-03-16 | 2018-03-16 | Cooling-water machine control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368679.3U CN207884276U (en) | 2018-03-16 | 2018-03-16 | Cooling-water machine control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207884276U true CN207884276U (en) | 2018-09-18 |
Family
ID=63496483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820368679.3U Active CN207884276U (en) | 2018-03-16 | 2018-03-16 | Cooling-water machine control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207884276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071663A (en) * | 2019-05-20 | 2019-07-30 | 百尔制冷(无锡)有限公司 | A kind of control system and its method of the start/stop of compressor for the Parallel sets that freeze |
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
| CN110595126A (en) * | 2019-09-24 | 2019-12-20 | 深圳市辉宏技术有限公司 | Heat pump set with function of internet of things and control circuit thereof |
-
2018
- 2018-03-16 CN CN201820368679.3U patent/CN207884276U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071663A (en) * | 2019-05-20 | 2019-07-30 | 百尔制冷(无锡)有限公司 | A kind of control system and its method of the start/stop of compressor for the Parallel sets that freeze |
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
| CN110595126A (en) * | 2019-09-24 | 2019-12-20 | 深圳市辉宏技术有限公司 | Heat pump set with function of internet of things and control circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 528451 Building 3, No. 18, Simiao Road, South China Modern Traditional Chinese Medicine City, Nanlang Street, Zhongshan City, Guangdong Province (multiple photos for one site) Patentee after: ZHONGSHAN XINTAI MACHINERY EQUIPMENT Co.,Ltd. Address before: 528400 No. A1 Caisheng industrial plant, Yinghai 1st Road, Nanlang Industrial Zone, Nanlang Town, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN XINTAI MACHINERY EQUIPMENT Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |