CN114165933A - Air supplementing method, device and equipment for compressor and temperature adjusting system - Google Patents
Air supplementing method, device and equipment for compressor and temperature adjusting system Download PDFInfo
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- CN114165933A CN114165933A CN202111303227.XA CN202111303227A CN114165933A CN 114165933 A CN114165933 A CN 114165933A CN 202111303227 A CN202111303227 A CN 202111303227A CN 114165933 A CN114165933 A CN 114165933A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001502 supplementing effect Effects 0.000 title claims description 17
- 239000013589 supplement Substances 0.000 claims abstract description 7
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims 2
- 238000005336 cracking Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000003507 refrigerant Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F25B1/00—Compression machines, plants or systems with non-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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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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
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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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
- 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
- F25B49/022—Compressor control arrangements
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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
- F25B2500/00—Problems to be solved
- F25B2500/07—Exceeding a certain pressure value in a refrigeration component or 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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21151—Temperatures of a compressor or the drive means therefor at the suction side of the compressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- 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)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of air supplement of compressors, in particular to an air supplement method, a device, equipment and a temperature adjusting system of a compressor. The current workload may be detected; judging whether the working load is in a standard working load interval of the temperature adjusting unit; if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval, the valve is controlled to be opened; and if the work load is in a standard work load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, closing the control valve. The pipeline provided by the invention is simple and reliable, and the cracking rate of the pipeline can be greatly reduced.
Description
Technical Field
The invention relates to the technical field of air supplement of compressors, in particular to an air supplement method, device and equipment of a compressor and a temperature adjusting system.
Background
Difluoromethane (R32) does not destroy the ozone layer, and the potential value of greenhouse effect is only 40% of R410A, which is a relatively environment-friendly refrigerant. Moreover, the temperature control system adopting R32 as the refrigerant is more advantageous in low-temperature heating, the lower the ambient temperature is, the larger the heating quantity of the temperature control system adopting R32 as the refrigerant is increased, but the situation that the exhaust temperature of the temperature control system is too high needs to be limited, so as to reduce the pressure drop before and after the compressor and avoid damaging the compressor.
In the prior art, a refrigerant air-supplementing enthalpy-increasing system is mostly adopted to reduce the air suction temperature by using a flash evaporator and then reduce the pressure drop of air suction. However, this way of reducing the pressure drop of the suction gas by means of the flash evaporator is complicated in piping and increases the risk of leaks.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus, a device and a temperature adjustment system for supplying air to a compressor, so as to overcome the problem that the conventional method for reducing the pressure drop of the suction air by using a flash evaporator has complicated pipelines and increases the risk of leakage.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides a gas supplementing method of a compressor, which is applied to a temperature adjusting system comprising at least one temperature adjusting unit, wherein the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline; the method comprises the following steps:
detecting a current workload;
judging whether the working load is in a standard working load interval of the temperature adjusting unit;
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval, controlling the valve to be opened;
and if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, controlling the valve to be closed.
Further, in the method described above, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, the method further includes:
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds the upper limit value of the standard working load interval, determining the working quantity of the temperature adjusting unit which is started according to the working load;
and controlling the temperature adjusting unit of the working quantity to be started and operate in a standard mode.
Further, in the method described above, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, the method further includes:
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, determining the working number of the temperature adjusting unit to be started according to the working load;
and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
Further, in the above method, the refrigerant in the pipeline includes difluoromethane.
On the other hand, the invention also provides an air supplement device of the compressor, which is applied to a temperature adjusting system comprising at least one temperature adjusting unit, wherein the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and the pipeline is provided with a valve; the device comprises:
the detection module is used for detecting the current workload;
the judging module is used for judging whether the working load is in a standard working load interval of the temperature adjusting unit;
the control module is used for controlling the valve to be opened if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval;
the control module is further configured to control the valve to close if the workload is within a standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature.
Further, in the above apparatus, the control module is further configured to, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, determine, according to the workload, the number of activated work of the temperature adjustment unit if the workload is within the standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the workload exceeds an upper limit of the standard workload interval; and controlling the temperature adjusting unit of the working quantity to be started and operate in a standard mode.
Further, in the above apparatus, the apparatus is further configured to determine, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, if the workload is within the standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, determine, according to the workload, the number of operations of the temperature adjustment unit that is turned on; and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
In another aspect, the present invention further provides a gas compensation device for a compressor, which includes a processor and a memory, wherein the processor is connected to the memory:
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program for at least performing the method of any of the above.
On the other hand, the invention also provides a temperature adjusting system, which comprises at least one temperature adjusting unit and the air supplementing equipment of the compressor;
the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline;
the valve is electrically connected with the air supplementing device.
Further, in the temperature adjusting system, a filter and a throttling and pressure reducing assembly are arranged on the pipeline;
the filter is arranged adjacent to the output end of the expansion valve.
Further, in the temperature adjustment system described above, the throttling and depressurizing assembly includes a capillary tube, an electronic expansion valve, or a thermal expansion valve.
Further, the temperature adjusting system comprises an air conditioning system.
The invention relates to a method, a device and equipment for supplementing air for a compressor and a temperature adjusting system, wherein the temperature adjusting system comprises at least one temperature adjusting unit, the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, a valve is arranged on the pipeline, and a refrigerant is arranged in the pipeline. The current workload may be detected; judging whether the working load is in a standard working load interval of the temperature adjusting unit; if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval, the valve is controlled to be opened; and if the work load is in a standard work load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, closing the control valve. By adopting the technical scheme of the invention, the suction temperature of the compressor is reduced through the refrigerant throttled by the expansion valve, so that the pressure drop of the front part and the rear part of the compressor is reduced, and the purpose of protecting the compressor is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a prior art wind cooled modular chiller/heater unit;
FIG. 2 is a block diagram of a temperature adjustment assembly provided in an embodiment of the temperature adjustment system of the present invention;
FIG. 3 is a flow chart of a method for supplying air to a compressor according to an embodiment of the present invention;
FIG. 4 is a schematic view of an embodiment of a gas compensator of a compressor according to the present invention;
FIG. 5 is a schematic structural diagram of a gas compensation device of a compressor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Difluoromethane (R32) will not destroy ozone layer, and the potential value of greenhouse effect is only 40% of R410A, can be used as refrigerant, and relatively more environmental protection. In the use process of the temperature control system adopting R32 as the refrigerant, the condition that the exhaust temperature of the temperature control system is overhigh needs to be limited so as to reduce the pressure drop before and after the compressor and avoid damaging the compressor.
In the prior art, a refrigerant air-supplementing enthalpy-increasing system is mostly adopted to reduce the air suction temperature by using a flash evaporator and then reduce the pressure drop of air suction. In the present embodiment, the manner of reducing the pressure drop of the suction gas by the flash evaporator will be described in detail by taking an air-cooled modular chiller-heater unit as an example.
The air-cooled modular cold and hot water unit is a central air-conditioning unit which takes air as a cold and hot source and water as a cooling and heating medium, and fig. 1 is a structural diagram of the air-cooled modular cold and hot water unit in the prior art. As shown in fig. 1, the current air-cooled modular chiller-heater unit includes components such as a compressor 101, an exhaust bulb 102, a high-pressure sensor 103, a high-pressure switch 104, a stop valve 105, a four-way valve 106, a muffler 107, a fin heat exchanger 108, a fan 109, a defrosting bulb 110, an environmental bulb 130, a first stop valve 111, a first filter 112, an electronic expansion valve 113, a second filter 114, a water reservoir 115, a shell-and-tube inlet bulb 116 of the water reservoir, an inlet bulb 117 of the water reservoir, an anti-freezing bulb 118 of the water reservoir, an outlet bulb 119 of the water reservoir, a shell-and-tube outlet bulb 120 of the water reservoir, a fluorine injection nozzle 121, a third filter 122, a second stop valve 123, an intake bulb 124, a gas-liquid separator 125, a third stop valve 126, a low-pressure cooling switch 127, a low-pressure heating switch 128, and the like, which are connected as shown in fig. 1, the direction indicated by the arrow a is a heating circulation direction, and the direction indicated by the arrow B is a cooling circulation direction.
In the prior art, a flash evaporator 129 is connected to both ends of the electronic expansion valve 113 and one end of the compressor 101 of the air-cooled modular chiller/heater unit, so as to reduce the suction temperature and then reduce the suction pressure drop by using the flash evaporator 129. However, this way of reducing the pressure drop of the suction gas by means of the flash evaporator 129 is complicated in piping and increases the risk of leaks.
In order to solve the above technical problem, the present embodiment provides a temperature adjustment system. The temperature adjusting system of the embodiment comprises air supplementing equipment of the compressor and at least one temperature adjusting unit. The actual number of the temperature adjusting units is not limited in this embodiment, and can be set according to actual conditions. The temperature adjusting unit comprises devices such as an expansion valve and a compressor which are all adopted in the temperature adjusting unit in the prior art, the functions of the devices such as the expansion valve and the compressor in the application are the same as the functions of the devices in the prior art, and the details are not repeated here. In this embodiment, the output end of the expansion valve of the temperature adjustment unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline, so that the valve is electrically connected with the air supply device.
The present embodiment is described in detail with reference to a specific structure of a temperature adjustment unit. And still take the air-cooled modular chiller-heater unit as an example. Fig. 2 is a block diagram of a temperature adjustment unit provided in an embodiment of the temperature adjustment system of the present invention, and as shown in fig. 2, the temperature adjustment unit includes a compressor 101, an exhaust bulb 102, a high-pressure sensor 103, a high-pressure switch 104, a shut-off valve 105, a four-way valve 106, a muffler 107, a fin heat exchanger 108, a fan 109, a defrosting bulb 110, an ambient bulb 130, a first shut-off valve 111, a first filter 112, an electronic expansion valve 113, a second filter 114, a water reservoir 115, a shell-and-tube inlet bulb 116 of the water reservoir, a water inlet bulb 117 of the water reservoir, an anti-freezing bulb 118 of the water reservoir, a water outlet bulb 119 of the water reservoir, a shell-and-tube outlet bulb 120 of the water reservoir, a fluorine injection nozzle 121, a third filter 122, a second shut-off valve 123, a suction bulb 124, a gas-liquid separator 125, a third shut-off valve 126, a low-pressure cooling switch 127, a low-pressure heating switch 128, and the like, the connection mode and the specific working mode of the above components are the same as those of the air-cooled modular chiller-heater unit in the embodiment shown in fig. 1, and the details are not repeated in this embodiment.
In this embodiment, the output end of the electronic expansion valve 113 of the temperature adjustment unit is communicated with the input end of the compressor 101 through a pipeline 21, and a valve 22 is arranged on the pipeline. The valve 22 is turned on or off under the control of the air supply device of the compressor, so as to realize the purpose of pressure drop before and after the compressor 101. It should be noted that the air-cooled modular chiller-heater unit is only an example, and is not limited specifically, if the temperature adjustment unit is not the air-cooled modular chiller-heater unit, the temperature adjustment unit may also communicate the output end of the expansion valve with the input end of the compressor through a pipeline, and a valve is disposed on the pipeline so as to electrically connect the valve with the air supply device.
In the temperature adjustment system of this embodiment, a valve is disposed on a pipeline between an output end of an expansion valve of the temperature adjustment unit and an input end of the compressor, and the valve is turned on or off under the control of the air supply device of the compressor. When the valve is conducted under the control of the air supply device of the compressor, the throttled refrigerant is supplied to the air suction port of the compressor through the pipeline to reduce the temperature of the air suction pipe of the compressor, so that the purpose of reducing the pressure drop of the front and the back of the compressor is achieved.
In an alternative embodiment, a filter 23 and a throttling and depressurizing module 24 are further disposed on the pipeline 21, and the filter 23 may be disposed adjacent to the output end of the expansion valve to prevent impurities from fouling the throttling and depressurizing module 24 and the solenoid valve 22. The throttling and depressurizing assembly 24 is used for throttling and depressurizing. As shown in fig. 2, a filter 23, a solenoid valve 22 and a throttle pressure reducing assembly 24 may be provided in sequence.
In an alternative embodiment, the throttling and depressurizing assembly 24 may include a capillary tube, an electronic expansion valve, or a thermal expansion valve.
In this embodiment, the air-cooled modular chiller-heater unit is only an example, and is not limited specifically, if the temperature adjustment unit is not the air-cooled modular chiller-heater unit, the output end of the expansion valve and the input end of the compressor may be communicated through a pipeline, a valve, a filter and a throttling and pressure-reducing assembly are disposed on the pipeline, and the valve is electrically connected to the air supply device.
In an alternative embodiment, the temperature regulation system is an air conditioner.
Based on a general inventive concept, the present embodiment further provides a gas supplementing method for a compressor, which is applied to the temperature adjustment system of the above embodiment, and is specifically applied to a gas supplementing device of a compressor of the temperature adjustment system. Fig. 3 is a flowchart of a gas replenishing method for a compressor according to an embodiment of the present invention, as shown in fig. 3, the method of the embodiment includes:
s31, detecting the current workload;
s32, judging whether the working load is in a standard working load interval of the temperature adjusting unit;
s33, if the work load is in the standard work load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the work load exceeds the upper limit value of the standard work load interval, the valve is controlled to be opened;
and S34, if the work load is in the standard work load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, closing the control valve.
Specifically, in this embodiment, the current workload amount may be detected. The air supplementing device of the compressor can be communicated with each temperature adjusting unit to judge whether the working load is in a standard working load interval of the temperature adjusting unit. It should be noted that, in this embodiment, the number of the temperature adjustment units is at least one, and the air make-up device of the compressor is configured to determine a standard workload interval of each temperature adjustment unit, so as to determine whether the workload is within the standard workload interval of the temperature adjustment unit.
If the working load is in the standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or the working load exceeds the upper limit value of the standard working load interval, the valve of the temperature adjusting unit is controlled to be opened, so that the temperature of the suction pipe of the compressor is reduced by supplementing the throttled refrigerant to the suction port, and the purpose of reducing the pressure drop of the compressor is achieved.
If the working load is in the standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, the current suction temperature of the compressor is in a preset range, the pressure drop across the compressor is not high, adjustment is not needed, and the valve can be controlled to be closed.
It should be noted that the standard workload interval and the standard suction temperature may be set according to an actual working condition, and the embodiment is not limited. The current suction temperature of the compressor can be obtained by measuring a suction bulb arranged at the suction port of the compressor.
The air supply method of the compressor of the embodiment detects the current working load; judging whether the working load is in a standard working load interval of the temperature adjusting unit; if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval, the valve is controlled to be opened; and if the work load is in a standard work load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, closing the control valve. By adopting the technical scheme of the embodiment, the suction temperature of the compressor is reduced through the refrigerant throttled by the expansion valve, so that the pressure drop of the front part and the rear part of the compressor is reduced, and the purpose of protecting the compressor is achieved.
In an optional embodiment, after the step of determining whether the workload is within the standard workload interval of the temperature adjustment unit, the method further includes the following steps:
the method comprises the following steps: if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the working load exceeds the upper limit value of the standard working load interval, determining the working quantity of the started temperature adjusting unit according to the working load;
step two: the temperature adjustment unit controlling the amount of work is turned on and operated in a standard mode.
Specifically, if the workload is within a standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the workload exceeds an upper limit value of the standard workload interval, the air supply device of the compressor may determine the working amount of the temperature adjustment unit that is turned on according to the workload, wherein the current workload is greater, the working amount of more temperature adjustment units may be controlled, and the specific working amount may be determined according to the actual workload and the working capacity of each temperature adjustment unit, which is not limited in this embodiment.
The working mode of the temperature adjusting unit can be divided into a standard mode and an energy-saving mode, and the standard mode can be used under the condition of large working load. For example, the workload in this embodiment is within a standard workload interval of the temperature adjustment assembly and the current suction temperature of the compressor is greater than the standard suction temperature, or if the workload exceeds the upper limit value of the standard workload interval, the standard mode may be used. In the standard mode, the temperature adjusting unit works at a normal working frequency. And the energy saving mode may be used in case of a small workload. Under the energy-saving mode, the operating frequency of the temperature adjusting unit is lower than that of the standard mode so as to realize the energy-saving effect.
In an optional embodiment, after the step of determining whether the workload is within the standard workload interval of the temperature adjustment unit, the method further includes the following steps:
the method comprises the following steps: if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, determining the working quantity of the started temperature adjusting unit according to the working load;
step two: and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
Specifically, if the workload is in a standard workload interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, determining the working number of the opened temperature adjusting unit according to the workload; the current workload is low, the temperature adjusting units can be controlled to work less, the specific working amount can be determined according to the actual workload and the working capacity of each temperature adjusting unit, the embodiment is not limited, and the temperature adjusting units controlling the working amount are started and run in an energy-saving mode. Under the energy-saving mode, the operating frequency of the temperature adjusting unit is lower than that of the standard mode so as to realize the energy-saving effect.
In an alternative embodiment, the coolant in the line comprises difluoromethane.
Based on a general inventive concept, the invention also provides an air supplement device of a compressor, which is used for realizing the method embodiment. FIG. 4 is a schematic structural diagram of an embodiment of an air compensating device of a compressor according to the present invention. As shown in fig. 4, the apparatus of the present embodiment includes:
a detection module 41 for detecting a current workload;
a judging module 42, configured to judge whether the workload is within a standard workload interval of the temperature adjustment unit;
a control module 43, configured to control the valve to open if the workload is within a standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the workload exceeds an upper limit value of the standard workload interval;
and the control module 44 is further configured to control the valve to close if the work load is within a standard work load interval of the temperature adjustment unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature.
In an optional embodiment, the control module 43 is further configured to, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, determine, according to the workload, the working number of the temperature adjustment unit that is turned on if the workload is within the standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is greater than the standard suction temperature, or if the workload exceeds an upper limit value of the standard workload interval; the temperature adjustment unit controlling the amount of work is turned on and operated in a standard mode.
In an optional embodiment, the control module 43 is further configured to determine, after determining whether the workload is within the standard workload interval of the temperature adjustment unit, if the workload is within the standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, the working quantity of the temperature adjustment unit to be turned on according to the workload; and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Based on a general inventive concept, the invention also provides a gas supplementing device of a compressor, which is used for realizing the method embodiment. FIG. 5 is a schematic structural diagram of a gas compensation device of a compressor according to an embodiment of the present invention. As shown in fig. 5, the air supply device of the compressor of the present embodiment includes a storage 51 and a storage 52, and the storage 51 is connected to the storage 52. Wherein, the memory 51 is used for calling and executing the program stored in the memory 52; the memory 52 is used for storing a program at least for executing the air supply method of the compressor in the above embodiment.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. The air supplementing method of the compressor is characterized in that the air supplementing method is applied to a temperature adjusting system comprising at least one temperature adjusting unit, the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline; the method comprises the following steps:
detecting a current workload;
judging whether the working load is in a standard working load interval of the temperature adjusting unit;
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval, controlling the valve to be opened;
and if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, controlling the valve to be closed.
2. The method of claim 1, wherein after determining whether the workload is within a standard workload interval of the thermal conditioning pack, further comprising:
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds the upper limit value of the standard working load interval, determining the working quantity of the temperature adjusting unit which is started according to the working load;
and controlling the temperature adjusting unit of the working quantity to be started and operate in a standard mode.
3. The method of claim 1, wherein after determining whether the workload is within a standard workload interval of the thermal conditioning pack, further comprising:
if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature, determining the working number of the temperature adjusting unit to be started according to the working load;
and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
4. The method of claim 1, wherein the coolant in the conduit comprises difluoromethane.
5. The air supplement device of the compressor is characterized by being applied to a temperature adjusting system comprising at least one temperature adjusting unit, wherein the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline; the device comprises:
the detection module is used for detecting the current workload;
the judging module is used for judging whether the working load is in a standard working load interval of the temperature adjusting unit;
the control module is used for controlling the valve to be opened if the working load is in a standard working load interval of the temperature adjusting unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the working load exceeds an upper limit value of the standard working load interval;
the control module is further configured to control the valve to close if the workload is within a standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is less than or equal to the standard suction temperature.
6. The apparatus according to claim 1, wherein the control module is further configured to, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, determine the number of operations of the temperature adjustment unit that is turned on according to the workload if the workload is within the standard workload interval of the temperature adjustment unit and the current suction temperature of the compressor is greater than a standard suction temperature, or if the workload exceeds an upper limit of the standard workload interval; and controlling the temperature adjusting unit of the working quantity to be started and operate in a standard mode.
7. The device of claim 1, wherein the control module is further configured to determine, after determining whether the workload is within a standard workload interval of the temperature adjustment unit, if the workload is within the standard workload interval of the temperature adjustment unit and a current suction temperature of the compressor is less than or equal to the standard suction temperature, determine a working number of the temperature adjustment unit to be turned on according to the workload; and controlling the temperature adjusting unit of the working quantity to start and operate in an energy-saving mode.
8. The air supplementing device of the compressor is characterized by comprising a processor and a memory, wherein the processor is connected with the memory:
the processor is used for calling and executing the program stored in the memory;
the memory for storing the program for performing at least the method of any of claims 1-4.
9. A temperature regulation system comprising at least one temperature regulation unit and a gas supplementing device of the compressor of claim 7;
the output end of an expansion valve of the temperature adjusting unit is communicated with the input end of the compressor through a pipeline, and a valve is arranged on the pipeline;
the valve is electrically connected with the air supplementing device.
10. The system of claim 8, wherein a filter and a throttling and pressure reducing assembly are disposed on the conduit;
the filter is arranged adjacent to the output end of the expansion valve.
11. The temperature regulation system of claim 10, wherein the throttling pressure reduction assembly comprises a capillary tube, an electronic expansion valve, or a thermal expansion valve.
12. A temperature regulation system, characterized in that the temperature regulation system comprises an air conditioning system.
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| CN202111303227.XA CN114165933A (en) | 2021-11-04 | 2021-11-04 | Air supplementing method, device and equipment for compressor and temperature adjusting system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111303227.XA CN114165933A (en) | 2021-11-04 | 2021-11-04 | Air supplementing method, device and equipment for compressor and temperature adjusting system |
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| JP2003343898A (en) * | 2002-05-23 | 2003-12-03 | Toshiba Kyaria Kk | Air conditioner |
| CN101957060A (en) * | 2010-11-01 | 2011-01-26 | 江苏天舒电器有限公司 | Ultralow temperature air source heat pump hot-water machine |
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