CN105627614A - Refrigerating unit and control method and control system thereof - Google Patents
Refrigerating unit and control method and control system thereof Download PDFInfo
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- CN105627614A CN105627614A CN201610052931.5A CN201610052931A CN105627614A CN 105627614 A CN105627614 A CN 105627614A CN 201610052931 A CN201610052931 A CN 201610052931A CN 105627614 A CN105627614 A CN 105627614A
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- oil
- control
- refrigeration
- compressor
- refrigeration oil
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000005057 refrigeration Methods 0.000 claims abstract description 287
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000002826 coolant Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract 3
- 241000009298 Trigla lyra Species 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2105—Oil temperatures
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a refrigerating unit and a control method and a control system thereof.A refrigeration oil separator is used for directly transmitting refrigeration oil to a compressor or transmitting the refrigeration oil to the compressor through an oil cooler; the cooling tower is used for cooling the refrigeration oil in the oil cooler and the condenser; the heat recovery tank is used for collecting heat of the refrigeration oil in the oil cooler and the condenser and heating the refrigeration oil in the oil cooler and the condenser by using the heat. When the temperature of the refrigeration oil is higher, the refrigeration oil in the oil separator can be controlled to be directly transmitted to the compressor, and the heating effect of the refrigeration oil cannot be influenced even if the refrigerating unit keeps a certain water flow; when the temperature of the refrigeration oil is lower, the refrigeration oil in the oil separator can be controlled to be transmitted to the compressor through the oil cooler, and the refrigeration oil in the oil cooler and the condenser can be heated through the heat recovery tank or the heat recovery tank and the heater, so that the problems of high power consumption and poor heating effect are solved.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to a kind of refrigeration unit and control method thereof and control system.
Background technology
Due to existing low temperature refrigerator group, to have evaporating temperature low and compress relatively larger, therefore, can cause that the temperature of high steam that compressor discharges and refrigeration oil is higher. When the temperature of refrigeration oil is too high, it is necessary to after refrigeration oil is cooled down by the cooling water in oil cooler, just can be transmitted back to compressor. And when the temperature of refrigeration oil is too low, it is necessary to refrigeration oil is electrically heated by the heater on oil eliminator, prevents refrigeration oil from incorporating coolant.
But, simple dependence electrical heating carrys out heating frozen oil, not only results in power consumption height, and heating can cause that the effect of heating is poor for a long time, and especially for the Large-scale machine set adopting external oil eliminator, the heats after long-time heating is worse. Additionally, before compressor start in low temperature refrigerator group, it is necessary to open the water pump controlling cooling tower, low temperature refrigerator group is made to keep certain discharge, but, cooling water now can affect the heats of refrigeration oil in oil cooler.
Summary of the invention
In view of this, the invention provides a kind of refrigeration unit and control method thereof and control system, to solve that the simple power consumption adopting electrical heating heating frozen oil to cause in prior art is high and the problem of heats difference and keep certain discharge to affect the problem of heats of refrigeration oil in oil cooler before compressor start.
For achieving the above object, the present invention provides following technical scheme:
A kind of refrigeration unit, including oil eliminator, compressor, oil cooler, condenser, cooling tower and recuperation of heat case, has the heater that described refrigeration oil is heated and detects the temperature sensor of described refrigeration oil temperature in described oil eliminator;
Described oil eliminator is used for refrigeration oil is directly transferred to described compressor, or, by described oil cooler by described refrigeration oil transmission to described compressor;
Described used for cooling tower in the refrigeration oil in described oil cooler and condenser is cooled down;
Described recuperation of heat case is for collecting the heat of the refrigeration oil in described oil cooler and condenser, and utilizes described heat that the refrigeration oil in described oil cooler and condenser is heated;
Wherein, when the refrigeration oil in described oil cooler and condenser is cooled down by described cooling tower, described recuperation of heat case stops the refrigeration oil in described oil cooler and condenser is heated; When refrigeration oil in described oil cooler and condenser is heated by described recuperation of heat case, described cooling tower stops the refrigeration oil in described oil cooler and condenser is cooled down.
Preferably, the 3rd pipeline that the second pipeline that the first pipeline that described refrigeration unit also includes being connected with the inlet of described oil cooler and described condenser is connected with the liquid outlet of described oil cooler and described condenser is connected with described oil eliminator oil-out;
Described first pipeline has the first control valve, described second pipeline has the second control valve, described SAN GUAN road has the 3rd control valve;
Described first controls valve for controlling the liquid outlet of described cooling tower and described first pipeline connection, so that the coolant in described cooling tower enters in described oil cooler and condenser, or control the liquid outlet of described recuperation of heat case and described first pipeline connection, so that the liquid in described recuperation of heat case enters in described oil cooler and condenser;
Described second controls valve connects with the inlet of described cooling tower or recuperation of heat case for controlling described second pipeline;
Described 3rd controls valve is used for controlling described mistake the 3rd pipeline and directly connects with described compressor, or controls described 3rd pipeline and pass through described oil cooler and connect with described compressor;
Wherein, control valve by described first and control the liquid outlet of described cooling tower and described first pipeline connection, control valve described second pipeline of control by described second to connect with the inlet of described recuperation of heat case, control described recuperation of heat case and the heat of the refrigeration oil in described oil cooler and condenser is collected.
Preferably, being applied to refrigeration unit as above, described control method includes:
Before described compressor is opened, it is judged that in described oil eliminator, whether the temperature of refrigeration oil is lower than the first preset temperature;
If it is not, the refrigeration oil controlled in described oil eliminator is directly transferred to described compressor, controls described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, controls described compressor and open;
If so, control refrigeration oil in described oil eliminator by described oil cooler transmission to described compressor, control described recuperation of heat case the refrigeration oil in described oil cooler and condenser be heated;
Judge that whether the temperature of refrigeration oil in described oil eliminator is lower than the second preset temperature, described second preset temperature is more than described first preset temperature, if not, control compressor to open, control described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor, if, control described heater to open, and when the temperature of described refrigeration oil is higher than described second preset temperature, control described heater to close, control described compressor to open, control described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor.
Preferably, described control method also includes:
In the process of described compressor operating, it is judged that whether the temperature of described refrigeration oil is lower than the 3rd preset temperature;
If so, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor;
If it is not, judge that whether the temperature of described refrigeration oil is lower than the 4th preset temperature, described 4th preset temperature is more than the 3rd preset temperature;
If so, a part of refrigeration oil controlled in described oil eliminator is directly transferred to described compressor by the transmission of described oil cooler to described compressor, another part refrigeration oil;
If it is not, judge whether the temperature of described refrigeration oil is higher than the 5th preset temperature, described 5th preset temperature, more than described 4th preset temperature, if so, controls the refrigeration oil in described oil eliminator by described oil cooler transmission to described compressor.
Preferably, described control method also includes:
In the process of described compressor operating, control described recuperation of heat case and collect the heat of the refrigeration oil in described oil cooler and condenser, or, control described cooling tower and the refrigeration oil in described oil cooler and condenser is cooled down.
Preferably, described control method also includes:
When described compressor shutdown, control compressor is closed and is controlled the refrigeration oil in described oil eliminator and is directly transferred to described compressor.
Preferably, described control method also includes:
In the process of described compressor shutdown; control the refrigeration oil in described oil eliminator and be directly transferred to described compressor; and judge that whether the temperature of described refrigeration oil is lower than the 6th preset temperature, if so, heater; if not; judge that whether the temperature of described refrigeration oil is higher than the 7th preset temperature, if it is not, heater; and when the temperature of described refrigeration oil is higher than seven preset temperatures, close heater.
The control system of a kind of refrigeration unit, is applied to refrigeration unit as above, and described control system includes:
Judge to control module, before opening at described compressor, judge that in described oil eliminator, whether the temperature of refrigeration oil is lower than the first preset temperature, if not, send the first control instruction and control module to first, send the second control instruction and control module to second, send the 3rd control instruction and control module to the 3rd, if, send the 4th control instruction and control module to second, send the 5th control instruction and control module to the 3rd, and judge that whether the temperature of refrigeration oil in described oil eliminator is lower than the second preset temperature, described second preset temperature is more than described first preset temperature, if not, then send described first control instruction and control module to first, send described 3rd control instruction and control module to the described 3rd, send described second control instruction and control module to described second, if, then send the 6th control instruction and control module to the 4th, and whether continue the temperature judging described refrigeration oil lower than the second preset temperature, if not, send described first control instruction and control module to described first, send described 3rd control instruction and control module to the 3rd, send the 7th control instruction and control module to the described 4th, send described second control instruction and control module to described second,
Described first controls module opens for controlling compressor after receiving described first control instruction;
Described second controls module is directly transferred to described compressor for the refrigeration oil controlled in oil eliminator after receiving described second control instruction, and the refrigeration oil controlling in described oil eliminator after receiving described 4th control instruction is by described oil cooler transmission to described compressor;
Refrigeration oil in described oil cooler and condenser is cooled down for control cooling tower after receiving described 3rd control instruction, controls the stopping of recuperation of heat case to the refrigeration oil heating in described oil cooler and condenser by described 3rd control module, and after receiving described 5th control instruction, the refrigeration oil in described oil cooler and condenser is heated by control recuperation of heat case, the refrigeration oil in described oil cooler and condenser is cooled down by control cooling tower stopping;
Described 4th controls module opens for controlling heater after receiving described 6th control instruction, controls heater and close after receiving described 7th control instruction.
Preferably, described judgement controls module and is additionally operable in the process of described compressor operating, judge that whether the temperature of described refrigeration oil is lower than the 3rd preset temperature, if, send described second control instruction and control module to second, if not, judge that whether the temperature of described refrigeration oil is lower than the 4th preset temperature, described 4th preset temperature is more than the 3rd preset temperature, if, send the 8th control instruction and control module to second, if not, judge that whether the temperature of described refrigeration oil is higher than the 5th preset temperature, described 5th preset temperature is more than described 4th preset temperature, if, send described 4th control instruction and control module to second,
Described second controls module is additionally operable to after receiving described 8th control instruction, and a part of refrigeration oil controlled in described oil eliminator is directly transferred to described compressor by the transmission of described oil cooler to described compressor, another part refrigeration oil.
Preferably, described judgement controls module and is additionally operable in the process of described compressor operating, sends described 3rd control instruction and controls module to the 3rd, or, send the 9th control instruction and control module to the 3rd;
3rd controls to control described recuperation of heat case after module is additionally operable to receive described 9th control instruction is collected the heat of the refrigeration oil in described oil cooler and condenser.
Preferably, described judge control module be additionally operable to when described compressor shutdown, send the tenth control instruction to first control module, and send described second control instruction to second control module;
Described first controls module is additionally operable to after receiving described tenth control instruction, controls compressor and closes.
Preferably; described judgement controls module and is additionally operable in the process of described compressor shutdown; send described second control instruction and control module to second; and judge that whether the temperature of described refrigeration oil is lower than the 6th preset temperature; if; send described 6th control instruction and control module to the 4th; if not; judge that whether the temperature of described refrigeration oil is higher than the 7th preset temperature; if not; send described 6th control instruction and control module to the 4th, and when the temperature of described refrigeration oil is higher than seven preset temperatures, sends described 7th control instruction and control module to the 4th.
Compared with prior art, technical scheme provided by the present invention has the advantage that
Refrigeration unit provided by the present invention and control method thereof and control system, when in oil eliminator, the temperature of refrigeration oil is higher, the refrigeration oil that can control in oil eliminator is directly transferred to compressor, even if now the refrigeration oil in oil cooler and condenser is carried out the discharge that cooling and refrigeration unit keep certain by cooling tower, impact without to the heats of refrigeration oil; When in oil eliminator, the temperature of refrigeration oil is relatively low, the refrigeration oil in oil eliminator can be controlled by oil cooler transmission to compressor, now by recuperation of heat case or recuperation of heat case and heater, the refrigeration oil in oil cooler and condenser can be heated, thus solving the problem that the simple power consumption adopting electrical heating heating frozen oil to cause is high and heats is poor.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
The structural representation of a kind of refrigeration unit that Fig. 1 provides for embodiments of the invention;
Control method flow chart before the compressor unlatching of the refrigeration unit that Fig. 2 provides for embodiments of the invention;
Control method flow chart in the compressor operating process of the refrigeration unit that Fig. 3 provides for embodiments of the invention;
Control method flow chart before the compressor shutdown of the refrigeration unit that Fig. 4 provides for embodiments of the invention;
Control method flow chart in the compressor shutdown process of the refrigeration unit that Fig. 5 provides for embodiments of the invention;
The structural representation of the control system of the refrigeration unit that Fig. 6 provides for embodiments of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The embodiment provides a kind of refrigeration unit, especially a kind of low temperature refrigerator group.
With reference to Fig. 1, refrigeration unit in the present embodiment includes oil eliminator 1, compressor 2, oil cooler 3, condenser 4, cooling tower 5 and recuperation of heat case 6, wherein, cooling tower 5 is for cooling down the refrigeration oil in oil cooler 3 and condenser 4, recuperation of heat case 6 is for collecting the heat of the refrigeration oil in oil cooler 3 and condenser 4, and utilize the heat of collection that the refrigeration oil in oil cooler 3 and condenser 4 is heated, oil eliminator 1 has the temperature sensor 11 of at least one heater 10 and detection refrigeration oil temperature that refrigeration oil is heated.
Additionally, also have oil return solenoid valve 20 and temperature sensor 21 on the pipeline being connected with compressor 2, oil return solenoid valve 20 is transferred in compressor 2 for the refrigeration oil in control piper, and temperature sensor 21 is for detecting the temperature of the refrigeration oil entering compressor 2. Wherein, oil return solenoid valve 20 and compressor 2 are with opening with pass, and when namely compressor 2 is opened, oil return solenoid valve 20 is opened, and when compressor 2 is closed, oil return solenoid valve 20 is closed. Condenser 4 is connected with oil eliminator 1 by trachea B1, and oil eliminator 1 is connected with compressor 2 by trachea B2, to realize the transmission of cold-producing medium.
In a detailed description of the invention of the present embodiment, the 3rd pipeline A3 that the second pipeline A2 that the first pipeline A1 that refrigeration unit also includes being connected with oil cooler 3 and condenser 4 inlet is connected with oil cooler 3 and condenser 4 liquid outlet is connected with oil eliminator 1 oil-out.
Wherein, the first pipeline A1 has the first control valve A11, the second pipeline A2 has the second control valve A22, SAN GUAN road A3 has the 3rd control valve A33. Further, the first pipeline A1 has water pump, the coolant in cooling tower 5 to be transported in oil cooler 3 and condenser 4.
First controls valve A11 for controlling the pipeline A4 and the first pipeline A1 connection that are connected with the liquid outlet of cooling tower 5, or controls the pipeline A5 and the first pipeline A1 connection that are connected with the liquid outlet of recuperation of heat case 6. Second controls the valve A22 pipeline A6 connection for controlling the second pipeline A2 and the inlet with cooling tower 5 is connected, or controls the second pipeline A2 and pipeline A7 that the inlet with recuperation of heat case 6 is connected connects.
When pipeline A4 and the first pipeline A1 connects and pipeline A6 and the second pipeline A2 connects, the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by the such as cold water of the coolant in cooling tower 5; When pipeline A5 and the first pipeline A1 connects and pipeline A7 and the second pipeline A2 connects, the refrigeration oil in oil cooler 3 and condenser 4 is heated by the such as hot water of the liquid in recuperation of heat case 6.
3rd controls valve A33 for controlling the 3rd pipeline A3 and the pipeline A8 connection being connected with compressor 2, so that the 3rd pipeline A3 directly connects with compressor 2, or control the 3rd pipeline A3 with and the pipeline A9 that is connected of the oil-in of oil cooler 3 connect so that the 3rd pipeline A3 passes through oil cooler 3 and connects with compressor 2.
Wherein, the valve A11 pipeline A4 controlling to be connected and the first pipeline A1 connection is controlled with the liquid outlet of cooling tower 5 by first, control, by second, the pipeline A7 that valve A22 controls the second pipeline A2 and the inlet with recuperation of heat case 6 is connected to connect, control the recuperation of heat case 6 heat to the refrigeration oil in oil cooler 3 and condenser 4 and be collected. Preferably, first in the present embodiment controls valve A11, the second control valve A22 and the three control valve A33 is electric T-shaped valve.
In the present embodiment, cooling tower 5 and recuperation of heat case 6 share the first pipeline A1 and the second pipeline A2, but the present invention is not limited to this, in other embodiments, cooling tower 5 can adopt independent loop to be connected with oil cooler 3 and condenser 4, and recuperation of heat case 6 can also adopt independent loop to be connected with oil cooler 3 and condenser 4. Additionally, in the present embodiment, the coolant in cooling tower 5 is water, the circulation liquid in recuperation of heat case 6 is also water, but the present invention is not limited to this, in other embodiments, it is possible to adopt other liquid with heat release that can absorb heat.
The refrigeration unit that the present embodiment provides, when in oil eliminator, the temperature of refrigeration oil is higher, the refrigeration oil that can control in oil eliminator is directly transferred to compressor, even if now the refrigeration oil in oil cooler and condenser is carried out the discharge that cooling and refrigeration unit keep certain by cooling tower, impact without to the heats of refrigeration oil; When in oil eliminator, the temperature of refrigeration oil is relatively low, the refrigeration oil in oil eliminator can be controlled by oil cooler transmission to compressor, now by recuperation of heat case or recuperation of heat case and heater, the refrigeration oil in oil cooler and condenser can be heated, thus solving the problem that the simple power consumption adopting electrical heating heating frozen oil to cause is high and heats is poor.
Embodiments of the invention additionally provide the control method of a kind of refrigeration unit, it is applied to the refrigeration unit that above-described embodiment provides, as in figure 2 it is shown, before the compressor 2 of refrigeration unit as above is opened, the control method of the refrigeration unit that the present embodiment provides includes:
S201: judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the first preset temperature, if it is not, enter S202, if so, enters S203;
S202: the refrigeration oil in control oil eliminator 1 is directly transferred to compressor 2, the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by control cooling tower 5, control compressor 2 opens;
S203: control refrigeration oil in oil eliminator 1 and transmit to compressor 2 by oil cooler 3, control recuperation of heat case 6 refrigeration oil in oil cooler 3 and condenser 4 is heated, and enter step S204;
S204: judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the second preset temperature, the second preset temperature is more than the first preset temperature, if it is not, enter step S205, if so, enters step S206;
S205: control compressor 2 and open, control that the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by cooling tower 5, the refrigeration oil that controls in oil eliminator 1 is directly transferred to compressor 2;
S206: control heater 10 and open, and when the temperature of refrigeration oil is higher than the second preset temperature, controls heater 10 and closes, controls compressor 2 and open, control cooling tower 5 refrigeration oil in oil cooler 3 and condenser 4 is cooled down;
Wherein, when the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by cooling tower 5, recuperation of heat case 6 stops the refrigeration oil in oil cooler 3 and condenser 4 is heated; When refrigeration oil in oil cooler 3 and condenser 4 is heated by recuperation of heat case 6, cooling tower 5 stops the refrigeration oil in oil cooler 3 and condenser 4 is cooled down.
Specifically, before compressor 2 is opened, water pump first need to be opened, then judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the first preset temperature according to the testing result of temperature sensor 10, if the temperature of refrigeration oil is higher than the first preset temperature in oil eliminator 1, illustrate that the temperature of refrigeration oil is suitable for start and will not incorporate coolant, now can control compressor 2 to open, valve A11 control piper A4 and the first pipeline A1 connection is controlled by first, valve A22 control piper A6 and the second pipeline A2 connection is controlled by second, the cold water in cooling tower 5 is made to return in cooling tower 5 after entering oil cooler 3 and condenser 4, so that the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by cooling tower 5, so that refrigeration unit keeps certain discharge or antifreeze, simultaneously by the 3rd control valve A33 control piper A8 and the three pipeline A3 connection, the refrigeration oil in control oil eliminator 1 is made to be directly transferred to compressor 2, in order to avoid cooling tower 5 flows into the cold water in oil eliminator 1 and reduces the temperature of refrigeration oil,
If the temperature of refrigeration oil is lower than the first preset temperature in oil eliminator 1, then control the 3rd pipeline A3 and pipeline A9 by the 3rd control valve A33 to connect, so that the refrigeration oil in oil eliminator 1 is transmitted to compressor 2 by oil cooler 3, control the first pipeline A1 by the first control valve A11 to connect with pipeline A5, control the second pipeline A2 by the second control valve A22 to connect with pipeline A7, make the hot water in recuperation of heat case 6 enter after in oil cooler 3 and condenser 4 to return in recuperation of heat case 6, so that the refrigeration oil in oil cooler 3 and condenser 4 is heated by recuperation of heat case 6, judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the second preset temperature afterwards, second preset temperature is more than the first preset temperature, if higher than the second preset temperature, then control compressor 2 to open, if lower than the second preset temperature, then control heater 10 to open, refrigeration oil in oil eliminator 1 is heated, and persistently judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the second preset temperature, when the temperature of refrigeration oil is higher than the second preset temperature, control heater 10 to close, control compressor 2 to open, control the first pipeline A1 by the first control valve A11 to connect with pipeline A4 simultaneously, control the second pipeline A2 by the second control valve A22 to connect with pipeline A6, so that the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by cooling tower 5, namely in the process of compressor 2 work, it is lowered into the temperature of the refrigeration oil of compressor 2.
Connect with pipeline A4 owing to the first control valve A11 controls the first pipeline A1, second controls valve A22 controls after the second pipeline A2 connects with pipeline A6, first pipeline A1 and the second pipeline A2 and recuperation of heat case 6 disconnect, therefore, recuperation of heat case 6 stops the refrigeration oil in oil cooler 3 and condenser 4 is heated. In like manner, connect with pipeline A5 when the first control valve A11 controls the first pipeline A1, second controls valve A22 controls after the second pipeline A2 connects with pipeline A7, the pipeline of cooling tower 5 and the first pipeline A1 and the second pipeline A2 disconnect, and cooling tower 5 stops the refrigeration oil in oil cooler 3 and condenser 4 is cooled down.
Further, as it is shown on figure 3, in the process that compressor 2 runs, the control method of the refrigeration unit in the present embodiment also includes:
S301: judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the 3rd preset temperature, if so, enters step S302, if it is not, enter step S303;
S302: the refrigeration oil controlled in oil eliminator 1 is directly transferred to compressor 2;
S303: judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the 4th preset temperature, the 4th preset temperature, more than the 3rd preset temperature, if so, enters step S304, if it is not, enter step S305;
S304: control a part of refrigeration oil in oil eliminator 1 and transmitted to compressor 2, another part refrigeration oil by oil cooler 3 and be directly transferred to compressor 2;
S305: judging that in oil eliminator 1, whether the temperature of refrigeration oil is higher than the 5th preset temperature, the 5th preset temperature is more than the 4th preset temperature, if it is not, keep current state, if so, enters step S306;
S306: the refrigeration oil controlled in oil eliminator 1 is transmitted to compressor 2 by oil cooler 3.
Specifically, in the process that compressor 2 runs, testing result according to temperature sensor 10 judges that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the 3rd preset temperature, if lower than the 3rd preset temperature, control valve A33 by the 3rd and control the 3rd pipeline A3 and pipeline A8 connection, so that the refrigeration oil in oil eliminator 1 is directly transferred to compressor 2, if higher than the 3rd preset temperature, judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the 4th preset temperature, 4th preset temperature is more than the 3rd preset temperature, if lower than the 4th preset temperature, control valve A33 control the 3rd pipeline A3 and pipeline A8 and pipeline A9 by the 3rd to connect simultaneously, so that a part of refrigeration oil in oil eliminator 1 is transmitted to compressor 2 by oil cooler 3, another part refrigeration oil is directly transferred to compressor 2, if higher than the 4th preset temperature, determine whether that in oil eliminator 1, whether the temperature of refrigeration oil is higher than the 5th preset temperature, 5th preset temperature is more than the 4th preset temperature, if higher than the 5th preset temperature, control valve A33 control the 3rd pipeline A3 and pipeline A9 by the 3rd to connect, so that the refrigeration oil in oil eliminator 1 is transmitted to compressor 2 by oil cooler 3.
Additionally, in the process that compressor 2 runs, also need whether whether the recuperation of heat case 6 judging refrigeration unit connect with oil cooler 3 and condenser 4; If, then control the first pipeline A1 by the first control valve A11 to connect with pipeline A4, control valve A22 by second to control the second pipeline A2 and connect with pipeline A7, so that after the cold water in cooling tower 5 absorbs heat from oil cooler 3 and condenser 4, storing in recuperation of heat case 6; Connect with pipeline A4 if it is not, then control the first pipeline A1 by the first control valve A11, control the second pipeline A2 by the second control valve A22 and connect with pipeline A6, so that the refrigeration oil in oil cooler 3 and condenser 4 is cooled down by cooling tower 5.
As shown in Figure 4, before compressor 2 is shut down, the control method of the refrigeration unit in the present embodiment also includes:
S401: judge that whether compressor 2 is satisfied and shut down requirement, if so, then enter S402, if it is not, then persistently judge until after meeting shutdown requirement, entering S402;
S402: control compressor 2 and close, and control the refrigeration oil in oil eliminator 1 and be directly transferred to compressor 2. Namely control the 3rd pipeline A3 and pipeline A8 by the 3rd control valve A33 to connect, so that the refrigeration oil in oil eliminator 1 is directly transferred to compressor 2.
As it is shown in figure 5, in the process that compressor 2 is shut down, the control method of the refrigeration unit in the present embodiment also includes:
S501: the refrigeration oil controlled in oil eliminator 1 is directly transferred to compressor 2, and enters S502;
S502: judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the 6th preset temperature, if so, enters S503, if it is not, enter S504;
S503: heater;
S504: judge whether the temperature of the refrigeration oil in oil eliminator 1 is higher than the 7th preset temperature, if it is not, enter S505;
S505: heater, and when the temperature of the refrigeration oil in oil eliminator 1 is higher than seven preset temperatures, close heater.
Specifically; in the process that compressor 2 is shut down; control valve A33 control the 3rd pipeline A3 and pipeline A8 by the 3rd to connect; so that the refrigeration oil in oil eliminator 1 is directly transferred to compressor 2; judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the 6th preset temperature afterwards; if; heater; if not; judge whether the temperature of the refrigeration oil in oil eliminator 1 is higher than the 7th preset temperature, if it is not, heater; and the temperature of the refrigeration oil in oil eliminator 1 higher than seven preset temperatures time, close heater.
In the present embodiment, the first preset temperature is that the operational factor according to actual low temperature refrigerator group is set to the concrete numerical value of the 7th preset temperature, so that the control method in the present invention can better adapt to low temperature refrigerator group concrete application under various circumstances, therefore, the first preset temperature is not defined by the present invention to the concrete numerical value of the 7th preset temperature.
Additionally, pipeline A8 and pipeline A9 can increase hand stop valve, on the one hand can the aperture of manual adjustments pipeline and flow, the 3rd control valve A33 work can be substituted on the other hand in debugging situation or in emergency circumstances.
The control method of the refrigeration unit that the present embodiment provides, when recuperation of heat case 6 connects with oil cooler 3 and condenser 4, the heat of condenser 4 when refrigeration unit is run and the heat of oil cooler 3 is collected by recirculated water, and the hot water concentration after collecting heat is stored in recuperation of heat case 6, refrigeration oil is heated at this hot water of later use. When refrigeration unit is shut down, judge whether heater 11 according to preset temperature, such that it is able to by Oil-temperature control within the specific limits, effectively to save power consumption. Before refrigeration unit is started shooting, adding hot oil cooler 3 by the hot water in recuperation of heat case 6, accelerate the effect of heating oil temperature on the one hand, still further aspect improves the water temperature in condenser 4, is conducive to setting up rapidly pressure reduction when starting shooting. When compressor 2 runs, by detecting oil temperature and controlling valve A11 to the 3rd control valve A33 to first, by Oil-temperature control in a more properly stable scope.
Embodiments of the invention additionally provide the control system of a kind of refrigeration unit, it is applied to the refrigeration unit that above-described embodiment provides, as shown in Figure 6, the control system of the refrigeration unit in the present embodiment includes judging that controlling module the 1, first control module the 2, second control module the 3, the 3rd control module 4 and the 4th controls module 5.
Wherein, judge to control module 1 for before opening at compressor 2, judge that in oil eliminator 1, whether the temperature of refrigeration oil is lower than the first preset temperature, if not, send the first control instruction and control module 2 to first, send the second control instruction and control module 3 to second, send the 3rd control instruction and control module 4 to the 3rd, if, send the 4th control instruction and control module 3 to second, send the 5th control instruction and control module 4 to the 3rd, judge that whether the temperature of refrigeration oil in oil eliminator 1 is lower than the second preset temperature, second preset temperature is more than the first preset temperature, if not, send the first control instruction and control module 2 to first, if, send the 6th control instruction and control module 5 to the 4th, and whether continue the temperature judging refrigeration oil lower than the second preset temperature, if not, send the first control instruction and control module 2 to first, send the 3rd control instruction and control module 4 to the 3rd, send the 7th control instruction and control module 5 to the 4th,
First controls module 2 opens for controlling compressor 2 after receiving the first control instruction;
Second controls module 3 is directly transferred to compressor 2 for the refrigeration oil controlled in oil eliminator 1 after receiving the second control instruction, and the refrigeration oil controlled after receiving the 4th control instruction in oil eliminator 1 is transmitted to compressor 2 by oil cooler 3;
3rd controls module 4 for controlling cooling tower 5 after receiving the 3rd control instruction the refrigeration oil in oil cooler 3 and condenser 4 is cooled down, control recuperation of heat case 6 to stop the refrigeration oil in oil cooler 3 and condenser 4 is heated, and controls recuperation of heat case 6 and the refrigeration oil in oil cooler 3 and condenser 4 is heated, controls cooling tower 5 and stop the refrigeration oil in oil cooler 3 and condenser 4 is cooled down after receiving the 5th control instruction;
4th controls module 5 opens for controlling heater 11 after receiving the 6th control instruction, controls heater 11 and close after receiving the 7th control instruction.
Further, judge that controlling module 1 is additionally operable in the process that compressor 2 runs, judge that whether the temperature of refrigeration oil is lower than the 3rd preset temperature, if, send the second control instruction and control module 3 to second, if not, judge that whether the temperature of refrigeration oil is lower than the 4th preset temperature, 4th preset temperature is more than the 3rd preset temperature, if, send the 8th control instruction and control module 3 to second, if not, judge that whether the temperature of refrigeration oil is higher than the 5th preset temperature, 5th preset temperature is more than the 4th preset temperature, if, send the 4th control instruction and control module 3 to second,
3 second control modules is additionally operable to after receiving the 8th control instruction, controls a part of refrigeration oil in oil eliminator 1 and is transmitted to compressor 2, another part refrigeration oil by oil cooler 3 and be directly transferred to compressor 2.
Further, it is judged that control module 1 and be additionally operable in the process that compressor 2 runs, send the 3rd control instruction and control module 4 to the 3rd, or, send the 9th control instruction and control module 4 to the 3rd;
3rd controls to control recuperation of heat case after module 4 is additionally operable to receive the 9th control instruction is collected the heat of the refrigeration oil in oil cooler and condenser.
Further, it is judged that control module 1 be additionally operable to when compressor 2 is shut down, send the tenth control instruction to first control module 2, and send the second control instruction to second control module 3;
First controls module 2 is additionally operable to after receiving the tenth control instruction, controls compressor 2 and closes.
Further; judge that controlling module 1 is additionally operable in the process that compressor 2 is shut down; send the second control instruction and control module 3 to second; and judge that whether the temperature of refrigeration oil is lower than the 6th preset temperature; if; send the 6th control instruction and control module 5 to the 4th; if not; judge that whether the temperature of refrigeration oil is higher than the 7th preset temperature; if not; send the 6th control instruction and control module 5 to the 4th, and when the temperature of refrigeration oil is higher than seven preset temperatures, sends the 7th control instruction and control module 5 to the 4th.
Specifically, in the present embodiment second is controlled module 3 and is connected by the 3rd control valve A33 control the 3rd pipeline A3 and pipeline A8, the refrigeration oil in control oil eliminator 1 is made to be directly transferred to compressor 2, control valve A33 control the 3rd pipeline A3 and pipeline A9 by the 3rd to connect, make the refrigeration oil in oil eliminator 1 be transmitted to compressor 2 by oil cooler 3.
3rd control module 4 controls the first pipeline A1 by the first control valve A11 and connects with pipeline A4, controls the second pipeline A2 by the second control valve A22 and connects with pipeline A6, makes cooling tower 5 that the refrigeration oil in oil cooler 3 and condenser 4 to be cooled down; Control the first pipeline A1 by the first control valve A11 to connect with pipeline A5, control the second pipeline A2 by the second control valve A22 and connect with pipeline A7, make recuperation of heat case 6 that the refrigeration oil in oil cooler 3 and condenser 4 to be heated; Control the first pipeline A1 by the first control valve A11 to connect with pipeline A4, control the second pipeline A2 by the second control valve A22 and connect with pipeline A7, make recuperation of heat case 6 that the heat of the refrigeration oil in oil cooler and condenser to be collected.
The control system of the refrigeration unit that the present embodiment provides, when recuperation of heat case 6 connects with oil cooler 3 and condenser 4, the heat of condenser 4 when refrigeration unit is run and the heat of oil cooler 3 is collected by recirculated water, and the hot water concentration after collecting heat is stored in recuperation of heat case 6, refrigeration oil is heated at this hot water of later use. When refrigeration unit is shut down, judge whether heater 11 according to preset temperature, such that it is able to by Oil-temperature control within the specific limits, effectively to save power consumption. Before refrigeration unit is started shooting, adding hot oil cooler 3 by the hot water in recuperation of heat case 6, accelerate the effect of heating oil temperature on the one hand, still further aspect improves the water temperature in condenser 4, is conducive to setting up rapidly pressure reduction when starting shooting. When compressor 2 runs, by detecting oil temperature and controlling valve A11 to the 3rd control valve A33 to first, by Oil-temperature control in a more properly stable scope.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to. For device disclosed in embodiment, owing to it corresponds to the method disclosed in Example, so what describe is fairly simple, relevant part illustrates referring to method part.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (12)
1. a refrigeration unit, it is characterized in that, including oil eliminator, compressor, oil cooler, condenser, cooling tower and recuperation of heat case, described oil eliminator has the heater that described refrigeration oil is heated and detects the temperature sensor of described refrigeration oil temperature;
Described oil eliminator is used for refrigeration oil is directly transferred to described compressor, or, by described oil cooler by described refrigeration oil transmission to described compressor;
Described used for cooling tower in the refrigeration oil in described oil cooler and condenser is cooled down;
Described recuperation of heat case is for collecting the heat of the refrigeration oil in described oil cooler and condenser, and utilizes described heat that the refrigeration oil in described oil cooler and condenser is heated;
Wherein, when the refrigeration oil in described oil cooler and condenser is cooled down by described cooling tower, described recuperation of heat case stops the refrigeration oil in described oil cooler and condenser is heated; When refrigeration oil in described oil cooler and condenser is heated by described recuperation of heat case, described cooling tower stops the refrigeration oil in described oil cooler and condenser is cooled down.
2. refrigeration unit according to claim 1, it is characterized in that, the 3rd pipeline that the second pipeline that the first pipeline that described refrigeration unit also includes being connected with the inlet of described oil cooler and described condenser is connected with the liquid outlet of described oil cooler and described condenser is connected with described oil eliminator oil-out;
Described first pipeline has the first control valve, described second pipeline has the second control valve, described SAN GUAN road has the 3rd control valve;
Described first controls valve for controlling the liquid outlet of described cooling tower and described first pipeline connection, so that the coolant in described cooling tower enters in described oil cooler and condenser, or control the liquid outlet of described recuperation of heat case and described first pipeline connection, so that the liquid in described recuperation of heat case enters in described oil cooler and condenser;
Described second controls valve connects with the inlet of described cooling tower or recuperation of heat case for controlling described second pipeline;
Described 3rd controls valve is used for controlling described mistake the 3rd pipeline and directly connects with described compressor, or controls described 3rd pipeline and pass through described oil cooler and connect with described compressor;
Wherein, control valve by described first and control the liquid outlet of described cooling tower and described first pipeline connection, control valve described second pipeline of control by described second to connect with the inlet of described recuperation of heat case, control described recuperation of heat case and the heat of the refrigeration oil in described oil cooler and condenser is collected.
3. the control method of a refrigeration unit, it is characterised in that being applied to the refrigeration unit described in claim 1 or 2, described control method includes:
Before described compressor is opened, it is judged that in described oil eliminator, whether the temperature of refrigeration oil is lower than the first preset temperature;
If it is not, the refrigeration oil controlled in described oil eliminator is directly transferred to described compressor, controls described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, controls described compressor and open;
If so, control refrigeration oil in described oil eliminator by described oil cooler transmission to described compressor, control described recuperation of heat case the refrigeration oil in described oil cooler and condenser be heated;
Judge that whether the temperature of refrigeration oil in described oil eliminator is lower than the second preset temperature, described second preset temperature is more than described first preset temperature, if not, control compressor to open, control described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor, if, control described heater to open, and when the temperature of described refrigeration oil is higher than described second preset temperature, control described heater to close, control described compressor to open, control described cooling tower the refrigeration oil in described oil cooler and condenser is cooled down, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor.
4. method according to claim 3, it is characterised in that described control method also includes:
In the process of described compressor operating, it is judged that whether the temperature of described refrigeration oil is lower than the 3rd preset temperature;
If so, control the refrigeration oil in described oil eliminator and be directly transferred to described compressor;
If it is not, judge that whether the temperature of described refrigeration oil is lower than the 4th preset temperature, described 4th preset temperature is more than the 3rd preset temperature;
If so, a part of refrigeration oil controlled in described oil eliminator is directly transferred to described compressor by the transmission of described oil cooler to described compressor, another part refrigeration oil;
If it is not, judge whether the temperature of described refrigeration oil is higher than the 5th preset temperature, described 5th preset temperature, more than described 4th preset temperature, if so, controls the refrigeration oil in described oil eliminator by described oil cooler transmission to described compressor.
5. method according to claim 4, it is characterised in that described control method also includes:
In the process of described compressor operating, control described recuperation of heat case and collect the heat of the refrigeration oil in described oil cooler and condenser, or, control described cooling tower and the refrigeration oil in described oil cooler and condenser is cooled down.
6. method according to claim 3, it is characterised in that described control method also includes:
When described compressor shutdown, control compressor is closed and is controlled the refrigeration oil in described oil eliminator and is directly transferred to described compressor.
7. method according to claim 3, it is characterised in that described control method also includes:
In the process of described compressor shutdown; control the refrigeration oil in described oil eliminator and be directly transferred to described compressor; and judge that whether the temperature of described refrigeration oil is lower than the 6th preset temperature, if so, heater; if not; judge that whether the temperature of described refrigeration oil is higher than the 7th preset temperature, if it is not, heater; and when the temperature of described refrigeration oil is higher than seven preset temperatures, close heater.
8. the control system of a refrigeration unit, it is characterised in that being applied to the refrigeration unit described in claim 1 or 2, described control system includes:
Judge to control module, before opening at described compressor, judge that in described oil eliminator, whether the temperature of refrigeration oil is lower than the first preset temperature, if not, send the first control instruction and control module to first, send the second control instruction and control module to second, send the 3rd control instruction and control module to the 3rd, if, send the 4th control instruction and control module to second, send the 5th control instruction and control module to the 3rd, and judge that whether the temperature of refrigeration oil in described oil eliminator is lower than the second preset temperature, described second preset temperature is more than described first preset temperature, if not, then send described first control instruction and control module to first, send described 3rd control instruction and control module to the described 3rd, send described second control instruction and control module to described second, if, then send the 6th control instruction and control module to the 4th, and whether continue the temperature judging described refrigeration oil lower than the second preset temperature, if not, send described first control instruction and control module to described first, send described 3rd control instruction and control module to the 3rd, send the 7th control instruction and control module to the described 4th, send described second control instruction and control module to described second,
Described first controls module opens for controlling compressor after receiving described first control instruction;
Described second controls module is directly transferred to described compressor for the refrigeration oil controlled in oil eliminator after receiving described second control instruction, and the refrigeration oil controlling in described oil eliminator after receiving described 4th control instruction is by described oil cooler transmission to described compressor;
Refrigeration oil in described oil cooler and condenser is cooled down for control cooling tower after receiving described 3rd control instruction, controls the stopping of recuperation of heat case to the refrigeration oil heating in described oil cooler and condenser by described 3rd control module, and after receiving described 5th control instruction, the refrigeration oil in described oil cooler and condenser is heated by control recuperation of heat case, the refrigeration oil in described oil cooler and condenser is cooled down by control cooling tower stopping;
Described 4th controls module opens for controlling heater after receiving described 6th control instruction, controls heater and close after receiving described 7th control instruction.
9. the control system of refrigeration unit according to claim 8, it is characterized in that, described judgement controls module and is additionally operable in the process of described compressor operating, judge that whether the temperature of described refrigeration oil is lower than the 3rd preset temperature, if, send described second control instruction and control module to second, if not, judge that whether the temperature of described refrigeration oil is lower than the 4th preset temperature, described 4th preset temperature is more than the 3rd preset temperature, if, send the 8th control instruction and control module to second, if not, judge that whether the temperature of described refrigeration oil is higher than the 5th preset temperature, described 5th preset temperature is more than described 4th preset temperature, if, send described 4th control instruction and control module to second,
Described second controls module is additionally operable to after receiving described 8th control instruction, and a part of refrigeration oil controlled in described oil eliminator is directly transferred to described compressor by the transmission of described oil cooler to described compressor, another part refrigeration oil.
10. the control system of refrigeration unit according to claim 9, it is characterized in that, described judgement controls module and is additionally operable in the process of described compressor operating, sends described 3rd control instruction and controls module to the 3rd, or, send the 9th control instruction and control module to the 3rd;
3rd controls to control described recuperation of heat case after module is additionally operable to receive described 9th control instruction is collected the heat of the refrigeration oil in described oil cooler and condenser.
11. the control system of refrigeration unit according to claim 8, it is characterized in that, described judge control module be additionally operable to when described compressor shutdown, send the tenth control instruction to first control module, and send described second control instruction to second control module;
Described first controls module is additionally operable to after receiving described tenth control instruction, controls compressor and closes.
12. the control system of refrigeration unit according to claim 8, it is characterized in that, described judgement controls module and is additionally operable in the process of described compressor shutdown, send described second control instruction and control module to second, and judge that whether the temperature of described refrigeration oil is lower than the 6th preset temperature, if, send described 6th control instruction and control module to the 4th, if not, judge that whether the temperature of described refrigeration oil is higher than the 7th preset temperature, if not, send described 6th control instruction and control module to the 4th, and when the temperature of described refrigeration oil is higher than seven preset temperatures, send described 7th control instruction and control module to the 4th.
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| WO2018090894A1 (en) * | 2016-11-16 | 2018-05-24 | 艾默生环境优化技术(苏州)有限公司 | Compressor assembly and control method thereof and refrigerating/heating system |
| CN110006194A (en) * | 2019-04-09 | 2019-07-12 | 珠海格力电器股份有限公司 | Air conditioning system with oil reducing and liquid accumulation preventing functions and control method thereof |
| CN110006193A (en) * | 2019-03-25 | 2019-07-12 | 珠海格力电器股份有限公司 | Air conditioning system and compressor oil temperature adjusting device used by same |
| WO2021233460A1 (en) * | 2020-10-09 | 2021-11-25 | 青岛海尔空调电子有限公司 | Oil temperature control system and control method for refrigeration oil in air conditioner compressor |
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| CN105627614B (en) | 2018-01-09 |
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