CN107655185A - The low-temperature refrigeration control device of single-phase motor in air conditioning unit - Google Patents
The low-temperature refrigeration control device of single-phase motor in air conditioning unit Download PDFInfo
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- CN107655185A CN107655185A CN201711161565.8A CN201711161565A CN107655185A CN 107655185 A CN107655185 A CN 107655185A CN 201711161565 A CN201711161565 A CN 201711161565A CN 107655185 A CN107655185 A CN 107655185A
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Abstract
The low-temperature refrigeration control device of single-phase motor in air conditioning unit, including motor control module, first pressure switch and second pressure switch；The clossing pressure threshold values of first pressure switch is higher than the clossing pressure threshold values of second pressure switch；The N line interfaces of motor control module are connected with zero line and with driving the zero line interface of the motor of outdoor fan to be connected, L line interfaces are connected with live wire, HF interfaces are connected with high speed/low-speed running control port of LF interfaces difference motor, the one end of PS1 interfaces and PS2 interfaces respectively with first pressure switch and second pressure switch is connected, and first pressure switch is in parallel with the other end of second pressure switch and is connected with the com interface of motor control module；It is by gathering the atmospheric pressure value of condensator outlet come controlled motor rotating speed, condenser pressure is set to be fluctuated in a normal range (NR), so as to avoid because low temperature and caused by the too low system evaporation brought of condensing pressure not exclusively, the evaporimeter frosting even dangerous situation such as bursting by freezing, improve air-conditioner set cryogenic refrigeration operation conditions.
Description
Technical field
The present invention relates to the control device technical field of air-conditioner set motor, and more particularly to single-phase motor in air conditioning unit is low
Warm refrigeration control device.
Background technology
Existing air conditioner includes refrigerating circuit and electric control system, and refrigerating circuit is by compressor, condenser, capillary
Duct member and evaporator composition.Electric-control system includes the parts such as circuit control panel, thermistor, control valve and fan electromotor.System
During cold operation, heat is transferred to outdoor by air conditioner by compressor work according to refrigeration principle from interior.Generally,
During refrigerating operaton, indoor temperature can be higher than outdoor temperature, refrigerating plant condensing capacity increase with the Wen Duxiajiang of outdoor.
Existing Domestic separating air conditioner, the environment temperature of work are generally 16 DEG C -43 DEG C, in actual use, one
As for, when outdoor environment temperature is high, it is desirable to air conditioner carry out cooling operation mode；When outdoor environment temperature is low, it is desirable to
Air conditioner carries out heating operation mode.Our domestic air conditionings are designed both for such requirement at present.But have
A little special occasions, when outdoor environment temperature is less than 0 DEG C, remain that refrigeration.Such as large-scale computer room, equipment etc., it was both
It is required that indoor isolate with outdoor, require that indoor environment temperature is maintained at 18-32 DEG C again, run due to the machine and equipment of interior
When, all can constantly it generate heat, indoor temperature can constantly rise, and then have impact on life-span and the work task efficiency of equipment,
This requires air conditioner to carry out cooling operation mode.For traditional domestic air conditioner, it is less than 0 DEG C in outdoor environment temperature
Shi Jinhang refrigerating operatons, because outdoor air temperature is very low so that outside condensation temperature is very low, the refrigeration of condensator outlet
Agent temperature can reach less than 10 DEG C, and now condensing pressure fluctuation is big, causes condensing pressure low, then refrigerant passes through capillary member
Afterwards, its evaporating temperature is often below -5 DEG C, then gets in evaporator by capillary-compensated, refrigerant, easily cause frosting,
Freeze, influence the air circulation of indoor, influence refrigeration.In general, the rotating speed of air-conditioner set blower fan is to influence condensation
An important factor for pressure.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art and one kind is provided and passes through adjusting air conditioning group blower motor
Condensing pressure when rotating speed is to control cryogenic refrigeration, it is single-phase so as to improve the air-conditioner set of air-conditioner set cryogenic refrigeration operation conditions
The low-temperature refrigeration control device of motor.
The object of the present invention is achieved by the following technical measures：
The low-temperature refrigeration control device of single-phase motor in air conditioning unit, it includes the motor control electrically connected with air-conditioner set control module
Molding block, and it is arranged on the first pressure switch and second pressure switch of condensator outlet；The first pressure switch closes
Resultant pressure threshold values is higher than the clossing pressure threshold values of second pressure switch；The motor control module include N line interfaces, L line interfaces,
HF interfaces, LF interfaces, PS1 interfaces, PS2 interfaces and com interface, the N line interfaces and the zero line of air-conditioner set control module connect
Connect and with driving the zero line interface of the motor of outdoor fan to be connected, the L line interfaces and the live wire of air-conditioner set control module connect
Connect, the HF interfaces are connected with the control port that runs at high speed of the motor, the low-speed running of the LF interfaces and the motor
Control port is connected, and the PS1 interfaces are connected with one end that first pressure switchs, the PS2 interfaces and second pressure switch
One end connects, and the first pressure switch is in parallel with the other end of second pressure switch and is connected with the com interface.
When first pressure switch disconnects with second pressure switch, the motor control module sends electricity by HF interfaces
Machine runs at high speed control signal；When first pressure switchs closure pressure, and second pressure switches off, motor control module passes through
LF interfaces send motor low-speed running control signal；Closed when first pressure switch and second pressure switch, motor control mould
The HF interface and LF interfaces of block do not send control signal, then motor stalls.
Further, the motor control module is provided with OF interfaces, and the OF interfaces open and close with control air-conditioner set
Control port connects.
Further, the motor control module includes 4WV interfaces, the 4WV interfaces and control air-conditioner set system
The four-way valve control port connection of cold/heating mode conversion.
In accordance with the above, the motor control module respectively with drive outdoor fan two motor parallels.
Wherein, the motor is condenser type monophase machine, and the N line interfaces of the motor control module pass through an electric capacity and institute
State the fire-wire interfaces connection of motor.
The present invention has the beneficial effect that：Using the present invention, when air-conditioner set carries out cryogenic refrigeration, if the air pressure of condensator outlet
Higher than the clossing pressure threshold values of first pressure switch, first pressure switch disconnects with second pressure switch, motor control module
HF orifice motors, motor driven blower fan runs at high speed；If the air pressure higher than second pressure switch closure threshold values and
It is low less than the LF orifice motors of the clossing pressure threshold values, then motor control module of first pressure switch, motor driven blower fan
Speed operating；If the air pressure is less than the closure threshold values of second pressure switch, first pressure switch closes with second pressure switch
Close, the HF interfaces and LF interfaces of motor control module do not send control signal, then motor stalls；The present invention is condensed by gathering
The atmospheric pressure value of device outlet carrys out controlled motor rotating speed, condenser pressure is fluctuated in a normal range (NR), so as to avoid because of low temperature
And cause the too low system brought of condensing pressure to evaporate incomplete, the evaporimeter frosting even dangerous situation such as bursting by freezing, improve air-conditioning
Unit Low refrigerating operaton situation.
Brief description of the drawings：
Using accompanying drawing, the invention will be further described, but the embodiment in accompanying drawing does not form any limitation of the invention.
Fig. 1 is a kind of circuit theory diagrams of the low-temperature refrigeration control device of single-phase motor in air conditioning unit of the present invention；
Fig. 2 is a kind of low-temperature refrigeration control device of single-phase motor in air conditioning unit of the present invention and the circuit original of two motor parallels
Reason figure；
Fig. 3 is the logical flow chart of the motor control module of the present invention.
Fig. 1, Fig. 2, Fig. 3 include：
1 --- air-conditioner set control module；2 --- motor control module；3 --- motor；4 --- first pressure switchs；5——
Second pressure switchs；6 --- electric capacity.
Embodiment：
The present invention is further illustrated below in conjunction with the accompanying drawings, as shown in Figure 1, the cryogenic refrigeration control of single-phase motor in air conditioning unit
Device processed, it includes the motor control module 2 electrically connected with air-conditioner set control module 1, and is arranged on condensator outlet
First pressure switch 4 and second pressure switch 5；The clossing pressure threshold values of the first pressure switch 4 is higher than second pressure switch 5
Clossing pressure threshold values；The motor control module 2 includes N line interfaces, L line interfaces, HF interfaces, LF interfaces, PS1 interfaces, PS2
Interface and com interface；The N line interfaces of the motor control module 2 be connected with the zero line of air-conditioner set control module 1 and with driving
The zero line interface connection of the motor 3 of outdoor fan, L line interfaces and the air-conditioner set control module 1 of the motor control module 2
Live wire is connected, and the HF interfaces of the motor control module 2 are connected with the control port that runs at high speed of the motor 3, the motor
The LF interfaces of control module 2 are connected with the low-speed running control port of the motor 3, the PS1 interfaces of the motor control module 2
It is connected with one end of first pressure switch 4, the PS2 interfaces connect with one end of second pressure switch 5, first pressure
Power switch 4 is in parallel with the other end of second pressure switch 5 and is connected with the com interface of the motor control module 2.
Wherein, the motor 3 is condenser type individual event alternating current generator, can be that the individual event of capacitor start formula is handed over by electricity driving
Flow motor, capacitor operating type individual event alternating current generator or other types of condenser type individual event alternating current generator, if reach possess it is adjustable
The purpose of level motor speed, the condenser type individual event alternating current generator 3 are the prior art for being originally widely used in air-conditioner set,
Here its operation principle and structure are not repeated.
As shown in Figure 3, when air-conditioner set carries out cryogenic refrigeration, if the air pressure of condensator outlet is higher than first pressure switch 4
Clossing pressure threshold values, first pressure switch 45 disconnects with second pressure switch, and the HF orifices of motor control module 2 are electric
Machine 3, motor 3 drive blower fan to run at high speed；If the air pressure is higher than the closure threshold values of second pressure switch 5 and is less than first pressure
The LF orifices motor 3 of the clossing pressure threshold values, then motor control module 2 of switch 4, motor 3 drive blower fan low-speed running；If
The air pressure switchs 5 closure threshold values less than second pressure, then first pressure switch 4 closes with second pressure switch 5, motor
The HF interface and LF interfaces of control module 2 do not send control signal, then motor 3 stalls；The present invention is gone out by gathering condenser
The atmospheric pressure value of mouth carrys out the rotating speed of controlled motor 3, condenser pressure is fluctuated in a normal range (NR), so as to avoid making because of low temperature
Incomplete, the evaporimeter frosting even dangerous situation such as bursting by freezing is evaporated into the too low system brought of condensing pressure, improves air-conditioner set
Cryogenic refrigeration operation conditions.
In accordance with the above, the PS1 interfaces of the motor control module 2 and PS2 interfaces are first pressure switch 4 and the
The make-and-break signal collection port of two pressure switches 5, also it is condensator outlet pressure data collection port；The motor control mould
The HF interface and LF interfaces of block 2 are that motor speed control signal produces port；So if shown motor 3 is multistage adjustable speed
Motor, also can be by setting multiple pressure switches in condensator outlet, and is set and motor 3 in the motor control module 2
The pin of each rotating speed control port connection and realize and the multistage rotating speed of motor 3 be adjusted.
As shown in Figure 1, motor control module 2 described in the present embodiment is additionally provided with OF interfaces, and the OF interfaces are empty with control
The control port OF connections for adjusting unit to open and close.So, when the control port OF is powered, the ability of motor 3 rotation work, if
When the control port OF is not powered on, air-conditioner set is closed, and the motor 3 is also closed.
Wherein, the motor control module 2 is additionally provided with 4WV interfaces, described 4WV interfaces and control air-conditioner set system
The four-way valve control port 4WV connections of cold/heating mode conversion.So, it is described when the air-conditioner set is in heating mode
Four-way valve control port 4WV is conducted, and the HF interfaces of the motor control module 2 produce electric signal, and controlled motor 3 is transported at a high speed
Turn；When the air-conditioner set is in refrigeration mode, the four-way valve control port 4WV is not powered on, the rotating speed of the motor 3 by
Control signal caused by the HF interfaces or LF interfaces controls, and runs at high speed or low-speed running.
As shown in Figure 2, two motor parallels that the motor control module 2 can also respectively with driving outdoor fan.Tool
Say body, the N line interfaces of the motor control module 2 be connected with the zero line of air-conditioner set control module 1 and respectively with two electricity
The zero line interface connection of machine, the L line interfaces of the motor control module 2 are connected with the live wire of air-conditioner set control module 1, the electricity
Run at high speed control port of the HF interfaces of machine control module 2 respectively with two motors 3 is connected, the motor control module 2
Low-speed running control port of the LF interfaces respectively with two motors 3 is connected
Wherein, the motor 3 is condenser type monophase machine 3, and the N line interfaces of the motor control module 2 pass through an electric capacity 6 and institute
State the fire-wire interfaces connection of motor 3.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of scope is protected, although being explained with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Work as understanding, technical scheme can be modified or equivalent substitution, without departing from the reality of technical solution of the present invention
Matter and scope.
Claims (5)
1. the low-temperature refrigeration control device of single-phase motor in air conditioning unit, it is characterised in that：It includes and air-conditioner set control module
The motor control module of electrical connection, and it is arranged on the first pressure switch and second pressure switch of condensator outlet；
The clossing pressure threshold values of the first pressure switch is higher than the clossing pressure threshold values of second pressure switch；
The motor control module connects including N line interfaces, L line interfaces, HF interfaces, LF interfaces, PS1 interfaces, PS2 interfaces and COM
Mouthful, the N line interfaces are connected with the zero line of air-conditioner set control module and with driving the zero line interface of the motor of outdoor fan to connect
Connect, the L line interfaces are connected with the live wire of air-conditioner set control module, the control that runs at high speed of the HF interfaces and the motor
Port is connected, and the LF interfaces are connected with the low-speed running control port of the motor, and the PS1 interfaces switch with first pressure
One end connection, the PS2 interfaces be connecteds with one end that second pressure switch, and the first pressure switchs and second pressure switch
The other end it is in parallel and be connected with the com interface.
2. the low-temperature refrigeration control device of single-phase motor in air conditioning unit according to claim 1, it is characterised in that：The electricity
Machine control module is provided with OF interfaces, and the control port that the OF interfaces open and close with control air-conditioner set is connected.
3. the low-temperature refrigeration control device of single-phase motor in air conditioning unit according to claim 2, it is characterised in that：The electricity
Machine control module includes 4WV interfaces, the four-way valve control of the 4WV interfaces and control air-conditioner set refrigerating/heating patten transformation
Port connection processed.
4. the low-temperature refrigeration control device of the single-phase motor in air conditioning unit according to claims 1 to 3 any one, its feature
It is：The motor control module respectively with drive outdoor fan two motor parallels.
5. the low-temperature refrigeration control device of single-phase motor in air conditioning unit according to claim 4, it is characterised in that：The electricity
Machine is condenser type monophase machine, and the N line interfaces of the motor control module are connected by the fire-wire interfaces of an electric capacity and the motor
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161565.8A CN107655185A (en) | 2017-11-21 | 2017-11-21 | The low-temperature refrigeration control device of single-phase motor in air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711161565.8A CN107655185A (en) | 2017-11-21 | 2017-11-21 | The low-temperature refrigeration control device of single-phase motor in air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107655185A true CN107655185A (en) | 2018-02-02 |
Family
ID=61120493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711161565.8A Pending CN107655185A (en) | 2017-11-21 | 2017-11-21 | The low-temperature refrigeration control device of single-phase motor in air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107655185A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915722A (en) * | 2021-10-28 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control method and device during low-temperature refrigeration and multi-split system |
-
2017
- 2017-11-21 CN CN201711161565.8A patent/CN107655185A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915722A (en) * | 2021-10-28 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control method and device during low-temperature refrigeration and multi-split system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180202 |
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| WD01 | Invention patent application deemed withdrawn after publication |