CN107504706B - Air conditioner and rapid cooling method thereof - Google Patents
Air conditioner and rapid cooling method thereof Download PDFInfo
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- CN107504706B CN107504706B CN201710656022.7A CN201710656022A CN107504706B CN 107504706 B CN107504706 B CN 107504706B CN 201710656022 A CN201710656022 A CN 201710656022A CN 107504706 B CN107504706 B CN 107504706B
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- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 239000003507 refrigerant Substances 0.000 claims abstract description 97
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012795 verification 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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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
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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
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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
- F25B43/006—Accumulators
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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
- F25B2500/12—Sound
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
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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
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner and a quick refrigeration method thereof. The invention aims to solve the problems of high noise and high energy consumption of the conventional air conditioner in the rapid refrigeration process. For the purpose, the air conditioner comprises an outdoor heat exchanger, an indoor heat exchanger and a compressor, and further comprises a first storage tank, wherein the first storage tank is communicated with an air inlet pipeline of the compressor through a first connecting pipe, and a first switch valve is arranged on the first connecting pipe; the first switch valve is opened in a rapid cooling mode, so that part of gaseous refrigerant in an air inlet pipeline of the compressor enters the first storage tank, and the suction pressure of the compressor is reduced. The invention realizes the purpose of rapid refrigeration through the short-period change of the pressure in the refrigeration circulating pipeline of the air conditioner, and does not need to change the wind speed or change the frequency of the compressor, thereby reducing the increase of noise and energy consumption.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner and a quick refrigeration method thereof.
Background
With the continuous improvement of the life quality of people, the requirements of people on the surrounding things and the life quality are gradually improved. Along with the vigorous development of the air conditioning industry, people have higher and higher requirements on air conditioners. In order to further improve the user experience, the air conditioner can be operated at a rated or larger cooling capacity within a short time of starting, which puts a higher requirement on the cooling speed of the air conditioner. At present, the traditional air conditioner can only improve the refrigerating capacity of the air conditioner through the change of the wind speed or the change of the frequency of the compressor, and the mode brings larger noise and energy consumption.
Therefore, there is a need in the art for a new air conditioner and method to solve the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, namely the problems of high noise and high energy consumption of the conventional air conditioner in the rapid refrigeration process, the air conditioner provided by the invention comprises an outdoor heat exchanger, an indoor heat exchanger, a compressor and a first storage tank, wherein the first storage tank is communicated with an air inlet pipeline of the compressor through a first connecting pipe, and the first connecting pipe is provided with a first switch valve; the first switch valve is opened in a rapid cooling mode, so that part of gaseous refrigerant in an air inlet pipeline of the compressor enters the first storage tank, and the suction pressure of the compressor is reduced.
In a preferred embodiment of the above air conditioner, the first storage tank further includes a second connection pipe communicated with the air intake pipeline, and the second connection pipe is provided with a second on-off valve; the second switch valve is opened before the air conditioner is shut down or stopped so that the gaseous refrigerant in the first storage tank is released to a circulation pipeline of the air conditioner.
In a preferred embodiment of the air conditioner, a third on/off valve in a normally open state is provided on an intake pipe of the compressor.
In a preferred embodiment of the air conditioner, the air conditioner further includes a second storage tank for storing a liquid refrigerant, and the second storage tank is disposed on a pipeline between the outdoor heat exchanger and the indoor heat exchanger; in the rapid cooling mode, at least a portion of the liquid refrigerant in the second storage tank is released to a circulation line of the air conditioner.
In a preferred embodiment of the above air conditioner, a gas-liquid separator is connected to an intake pipe of the compressor to prevent liquid from being sucked into the compressor.
The invention also provides a quick refrigeration method of the air conditioner, which comprises the following steps: transferring part of gaseous refrigerant of an air inlet pipeline of the compressor to a first storage tank; the first storage tank is communicated with an air inlet pipeline of the compressor through a first connecting pipe.
In a preferred embodiment of the above method, the method further comprises: detecting gas pressures of the first storage tank and the compressor inlet line; when the gas pressure of the first storage tank is equal to that of the compressor air inlet pipeline, the gaseous refrigerant of the compressor air inlet pipeline does not enter the first storage tank any more; and when the pressure of the first storage tank is smaller than the gas pressure of the compressor air inlet pipeline, continuing to transfer part of the gaseous refrigerant of the compressor air inlet pipeline to the first storage tank.
In a preferred embodiment of the above method, the method further comprises: before the air conditioner is stopped, the gaseous refrigerant in the first storage tank is released to a circulating pipeline of the air conditioner.
In a preferred embodiment of the above method, the method further comprises, simultaneously with, before or after "transferring part of the gaseous refrigerant of the compressor inlet line to the first storage tank": and releasing at least part of liquid refrigerant stored in a second storage tank to a circulation pipeline of the air conditioner, wherein the second storage tank is arranged on a pipeline between the outdoor heat exchanger and the indoor heat exchanger.
In the technical scheme of the invention, the aim of rapid refrigeration is fulfilled through the short-period change of the pressure in the refrigeration circulating pipeline of the air conditioner, namely, the first storage tank is utilized to divide the refrigerant on the suction side of the compressor so as to reduce the gas pressure in the circulating pipeline of the air conditioner, thereby accelerating the refrigeration speed of the air conditioner. Further, in order to ensure the operation requirement of the air conditioner system, in the rapid cooling mode, the refrigerant in the second storage tank is released into the air conditioner circulation pipeline to supplement the amount of the refrigerant separated by the first storage tank. Compared with the quick refrigeration mode of the existing air conditioner, the invention does not need to change the wind speed or change the frequency of the compressor, thereby reducing the increase of noise and energy consumption. The experiment of the inventor verifies that the mode of shunting the refrigerant in the circulating pipeline in the refrigeration process through the first storage tank is used for reducing the gas pressure in the circulating pipeline, so that the refrigeration speed can be greatly increased, and the refrigeration capacity of the whole machine is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art air conditioner;
FIG. 2 is a schematic structural diagram of an embodiment of the air conditioner of the present invention;
fig. 3 is a detailed flow chart of the rapid cooling method of the air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the various components in the drawings are drawn to a particular scale, such scaling is merely exemplary and one skilled in the art may adjust them as needed to suit a particular application.
Referring first to fig. 1, fig. 1 is a schematic structural diagram of a conventional air conditioner. In order to more clearly explain the operation principle of the air conditioner, fans at the indoor heat exchanger and the outdoor heat exchanger are omitted in the drawings. As shown in fig. 1, the air conditioner includes a compressor a provided with a gas-liquid separator D, an outdoor heat exchanger B, and an indoor heat exchanger C. In fig. 1, arrows indicate the flow direction of the refrigerant in the circulation line during the cooling process. Specifically, in the refrigeration process, a high-temperature and high-pressure gaseous refrigerant flowing out of the compressor a enters the outdoor heat exchanger B (condenser), and is cooled and condensed into a liquid refrigerant in the outdoor heat exchanger B (condenser), and the liquid refrigerant is throttled by the throttling device E to form a low-pressure liquid refrigerant and flows into the indoor heat exchanger C (evaporator). The liquid refrigerant absorbs a large amount of heat in the indoor heat exchanger C (evaporator) to form a low-temperature and low-pressure gaseous refrigerant, flows into the gas-liquid separator D along the circulation line, is further sucked and compressed by the compressor to form a high-temperature and high-pressure gaseous refrigerant, flows into the outdoor heat exchanger B (condenser), and starts the next cycle. The refrigerant is circulated in the pipeline continuously, thereby realizing the refrigeration effect of the air conditioner.
In the cooling process of the air conditioner, the cooling capacity can be improved only by changing the wind speed or changing the frequency of the compressor. As described in the background, this approach has the disadvantage of being noisy and energy intensive. The invention improves the refrigerating capacity of the air conditioner by the short-period change of the pressure of the gaseous refrigerant in the circulating pipeline, thereby realizing the quick refrigeration. The structure of the air conditioner of the present invention will be described with reference to fig. 2.
Fig. 2 is a schematic structural diagram of an embodiment of the air conditioner of the present invention. As shown in fig. 2, the air conditioner of the present invention includes a compressor 1, an outdoor heat exchanger 2 (in the present embodiment, the outdoor heat exchanger is a condenser, and hereinafter, it is collectively referred to as a condenser 2), an indoor heat exchanger 3 (in the present embodiment, the indoor heat exchanger is an evaporator, and hereinafter, it is collectively referred to as an evaporator 3), and a first storage tank 4. Wherein the first storage tank 4 is communicated with the intake pipe 11 of the compressor 1 through a first connection pipe 41, and a first on-off valve 411 is provided on the first connection pipe 41 (in the normal cooling mode, the first on-off valve 411 is in a closed state). In the rapid cooling mode, the first switching valve 411 is opened to allow a portion of the gaseous refrigerant of the intake line 11 of the compressor 1 to enter the first storage tank 4, thereby reducing the suction pressure of the compressor 1. It should be noted that the gas pressure of the first storage tank 4 in the initial state is zero (or close to zero), so that the gaseous refrigerant in the gas inlet pipeline 11 can enter the first storage tank 4 after the first on-off valve 411 is opened.
Specifically, in the normal cooling mode, the liquid refrigerant absorbs heat in the evaporator 3 and turns into a gaseous refrigerant, and the gaseous refrigerant flows in the direction indicated by the arrow in the drawing (cooling flow direction), and is sucked into the compressor 1. The air inlet pipeline 11 of the compressor 1 is communicated with a first connecting pipeline 41 through a connecting pipelineWhen the first on-off valve 411 is opened, part of the gaseous refrigerant in the intake pipe 11 flows into the first tank 4 along the intake pipe 11. Assuming that the pressure of the gaseous refrigerant in the circulation pipeline in the system is P under the normal refrigeration mode0Then, after the first switching valve 411 is opened, the pressure of the gaseous refrigerant in the circulation line of the air conditioner is P0Will drop. The gas expands when the pressure is reduced, and the gas does work outwards when expanding to absorb the external heat. That is, the gaseous refrigerant in the circulation line of the air conditioner expands due to the pressure reduction and then absorbs the external heat, thereby accelerating the cooling of the air conditioner. For example, the liquid refrigerant absorbs external heat in the evaporator 3, the external temperature is reduced, and the liquid refrigerant in the evaporator 3 absorbs heat and changes into a gaseous refrigerant, at this time, because a part of the gaseous refrigerant enters the first storage tank 4, the gaseous refrigerant in the evaporator 3 expands, and when the gaseous refrigerant expands, the gaseous refrigerant applies work to the outside, so as to further absorb the external heat, thereby achieving the purpose of accelerating refrigeration. In brief, the first storage tank 4 is used for shunting the refrigerant in the circulating pipeline in the refrigerating process to reduce the gas pressure in the circulating pipeline of the air conditioner, so that the refrigerating speed of the air conditioner is increased, and the refrigerating capacity of the whole machine is improved.
When the pressure of the gaseous refrigerant in the circulation pipeline of the air conditioner is from P0Down to P1And the gas pressure in the first storage tank 4 is increased to P1Thereafter, the rapid cooling mode is exited, and the first switching valve 411 may be closed. That is, when the pressure of the first storage tank 4 is the same as the pressure of the gaseous refrigerant in the circulation line, the gaseous refrigerant in the circulation line does not enter the first storage tank 4 any more, i.e., the rapid cooling mode exits, and the first on-off valve 411 may be closed.
Further, the first storage tank 4 further includes a second connection pipe 42 communicating with the intake pipe 11, and a second on-off valve 421 is provided on the second connection pipe 42. Before the air conditioner is stopped, the second switching valve 42 is opened, so that the gaseous refrigerant in the first storage tank 4 is released to the refrigerant circulation line. Specifically, in order to ensure that the gas pressure in the first storage tank 4 is zero (or close to zero, at least the gas pressure in the first storage tank 4 is ensured to be lower than the gaseous refrigerant pressure in the refrigerant circulation pipeline) when the air conditioner enters the rapid cooling mode next time, before the air conditioner stops, after the second switch valve 421 is opened, the compressor 1 may suck the gaseous refrigerant in the first storage tank 4, so that the gas pressure in the first storage tank 4 is zero (or close to zero, at least the gas pressure in the first storage tank 4 is ensured to be lower than the gaseous refrigerant pressure in the refrigerant circulation pipeline). When the gas pressure in the first storage tank 4 is zero, the second on-off valve 421 is closed, and the air conditioner is stopped. Because part of the refrigerant is stored in the first storage tank 4 in the rapid cooling mode, the refrigerant stored in the first storage tank 4 is released to the circulation pipeline again before the air conditioner is stopped, and thus the recovery of the refrigerant is realized. It should be noted that the second on-off valve 421 is kept closed in both the rapid cooling mode and the normal cooling mode, and the second on-off valve 421 is opened only when the refrigerant in the first tank 4 is recovered.
It should be noted that the aforementioned "air conditioner is stopped" may be understood that the compressor stops working (or operates at a very low frequency) when the indoor temperature reaches the set value, and the compressor continues working (or operates at a higher frequency) when the indoor temperature changes; it can also be understood as an air conditioner shutdown. When the control unit of the air conditioner receives the signal of the air conditioner stopping, the second on-off valve 421 is controlled first to release the gaseous refrigerant in the first storage tank 4 to the refrigerant circulation pipeline, and then the air conditioner is controlled to perform the stopping operation. The "signal for stopping the air conditioner" may be sent by a user through a remote controller or the like, or the control unit of the air conditioner may determine whether the air conditioner needs to be stopped according to a judgment condition set by the check program.
Further, the intake pipe 11 of the compressor 1 is provided with a third on/off valve 111. Specifically, during the normal operation of the air conditioner, the third on/off valve 111 is in a normally open state, and the third on/off valve 111 is closed only when the refrigerant in the first tank 4 is recovered. That is, when the air conditioner is stopped, the third switching valve 111 is closed and the second switching valve 421 is opened, so that the compressor 1 can absorb the refrigerant in the first tank 4 more quickly, thereby accelerating the stop of the air conditioner. It should be noted that, normally, the closing of the third switch valve 111 and the opening of the second switch valve 421 are performed simultaneously, but during the actual operation of the air conditioner, the closing of the third switch valve 111 and the opening of the second switch valve 421 may occur in a sequential order, for example, after the second switch valve 421 is opened, the third switch valve 111 is closed, or after the third switch valve 111 is closed, the second switch valve 421 is opened, and the specific program design is not discussed here.
As a preferred embodiment, with continued reference to fig. 1, the air conditioner further includes a second storage tank 5 for storing a liquid refrigerant, and the second storage tank 5 is disposed on a pipe between the condenser 2 and the evaporator 3, specifically, on a pipe near an outlet (in a cooling mode) side of the condenser 2. In the rapid cooling mode, at least a portion of the liquid refrigerant in the second storage tank 5 is discharged to the refrigerant circulation line. Specifically, because under the rapid cooling mode, part of the refrigerant in the air conditioner circulation pipeline enters the first storage tank 4, so that the amount of the refrigerant in the circulation pipeline is reduced, at the moment, the refrigerant in the second storage tank 5 is released into the air conditioner refrigeration circulation pipeline, so that the refrigerant circulation amount in the air conditioner circulation pipeline can meet the operation requirement of the system. That is, in the normal cooling mode, the liquid refrigerant flowing out of the condenser 2 passes through the second storage tank 5 and the throttling device 6 and then enters the evaporator 3, and since the refrigerant amount in the circulation line is sufficient at this time, the refrigerant in the second storage tank 5 does not need to be released to the refrigerant circulation line. In the fast cooling mode, after the refrigerant in the circulation pipeline is reduced, the refrigerant in the second storage tank 5 is released into the circulation pipeline, so as to meet the operation requirement of the system.
Preferably, in the present embodiment, a gas-liquid separator 7 is connected to the intake pipe 11 of the compressor 1 to prevent liquid from being sucked into the compressor 1.
In summary, the present invention achieves the purpose of rapid refrigeration by short-period pressure change in the refrigeration cycle pipeline of the air conditioner, that is, the first storage tank 4 is used to bypass the refrigerant on the suction side of the compressor 1, so as to reduce the gas pressure in the refrigeration cycle pipeline of the air conditioner, thereby increasing the refrigeration speed of the air conditioner. Further, in order to ensure the operation requirement of the air conditioner system, in the rapid cooling mode, the refrigerant in the second storage tank 5 is released into the air conditioner circulation pipeline to supplement the amount of the refrigerant divided by the first storage tank 4. Compared with the rapid refrigeration mode of the existing air conditioner, the invention does not need to change the wind speed or change the frequency of the compressor, thereby reducing the increase of noise and energy consumption. Through inventor's experiment verification, through the mode that first storage jar 4 shunts the refrigerant in the refrigeration process in to the circulating line to reduce the gas pressure in the circulating line, the speed of refrigeration that can be very big improves the refrigerating output of complete machine.
On the other hand, the invention also provides a quick refrigeration method of the air conditioner. The method comprises the following steps: and transferring part of the gaseous refrigerant of the air inlet pipeline of the compressor to a first storage tank. Wherein, the first storage jar is through the air inlet pipeline intercommunication of first connecting pipe with the compressor.
Referring to fig. 3, fig. 3 is a detailed flowchart illustrating a rapid cooling method of an air conditioner according to the present invention. As shown in fig. 3, in the present embodiment, when performing the rapid cooling, step S310 is first executed to transfer a portion of the gaseous refrigerant in the inlet pipe of the compressor to the first storage tank. Since the first storage tank divides a portion of the refrigerant in the circulation pipeline, step S320 is executed to release at least a portion of the liquid refrigerant stored in the second storage tank to the circulation pipeline of the air conditioner, where the second storage tank is disposed on the pipeline between the condenser and the evaporator. In an actual operation process, step S310 may be executed first, step S320 may be executed first, or steps S310 and S320 may be executed simultaneously.
Then, the process proceeds to step S330, where it is determined whether the gas pressures in the first storage tank and the compressor inlet line are equal. If the gas pressures of the two are equal, the step S340 is performed, that is, the gaseous refrigerant in the inlet pipe of the compressor does not enter the first storage tank any more; and on the contrary, continuing to transfer part of the gaseous refrigerant of the compressor air inlet pipeline to the first storage tank until the gas pressure in the first storage tank is equal to the gaseous pressure of the compressor air inlet pipeline, so that the gaseous refrigerant of the compressor air inlet pipeline does not enter the first storage tank any more. That is, during the rapid cooling process, the gas pressure in the first storage tank is gradually increased, the gas pressure in the compressor inlet pipe is gradually decreased, and when the gas pressures of the two are equal, the rapid cooling is finished.
The process then proceeds to step S350, where it is determined whether the air conditioner is ready to be stopped. In this step, whether to prepare for shutdown may be determined by whether a signal for shutdown of the air conditioner is received. If not, continuing to operate the air conditioner; if yes, step S360 is executed to stop the air conditioner after releasing the gaseous refrigerant in the first storage tank to the circulation pipeline of the air conditioner.
For a more specific implementation of the above method, please refer to the above description of the air conditioner, which is not repeated herein.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (9)
1. An air conditioner comprises an outdoor heat exchanger, an indoor heat exchanger and a compressor, and is characterized by also comprising a first storage tank,
the first storage tank is communicated with an air inlet pipeline of the compressor through a first connecting pipe, and a first switch valve is arranged on the first connecting pipe;
before entering a rapid refrigeration mode, the gas pressure in the first storage tank is lower than the gaseous refrigerant pressure in a circulating pipeline of the air conditioner;
the first switch valve is opened in a rapid cooling mode, so that part of gaseous refrigerant in an air inlet pipeline of the compressor enters the first storage tank, and the suction pressure of the compressor is reduced.
2. The air conditioner according to claim 1, wherein the first storage tank further comprises a second connection pipe communicating with the intake pipe, the second connection pipe being provided with a second on-off valve;
the second switch valve is opened before the air conditioner is shut down or stopped so that the gaseous refrigerant in the first storage tank is released to the circulation pipeline of the air conditioner.
3. The air conditioner according to claim 2, wherein a third on/off valve in a normally open state is provided on an intake line of the compressor.
4. The air conditioner as claimed in claim 3, further comprising a second storage tank for storing liquid refrigerant,
the second storage tank is arranged on a pipeline between the outdoor heat exchanger and the indoor heat exchanger;
in the rapid cooling mode, at least a portion of the liquid refrigerant in the second storage tank is released to a circulation line of the air conditioner.
5. The air conditioner according to any one of claims 1 to 4, wherein a gas-liquid separator is connected to an intake line of the compressor to prevent liquid from being sucked into the compressor.
6. A quick refrigerating method of an air conditioner is characterized by comprising the following steps:
transferring part of gaseous refrigerant of an air inlet pipeline of the compressor to a first storage tank;
the first storage tank is communicated with an air inlet pipeline of the compressor through a first connecting pipe;
before entering the rapid cooling mode, the gas pressure in the first storage tank is lower than the gaseous refrigerant pressure in the circulation pipeline of the air conditioner.
7. The method of claim 6, further comprising:
detecting gas pressures of the first storage tank and the compressor inlet line;
when the gas pressure of the first storage tank is equal to that of the compressor air inlet pipeline, the gaseous refrigerant of the compressor air inlet pipeline does not enter the first storage tank any more;
and when the pressure of the first storage tank is smaller than the gas pressure of the compressor air inlet pipeline, continuing to transfer part of the gaseous refrigerant of the compressor air inlet pipeline to the first storage tank.
8. The method of claim 7, further comprising:
before the air conditioner is stopped, the gaseous refrigerant in the first storage tank is released to a circulating pipeline of the air conditioner.
9. The method of any one of claims 6 to 8, wherein simultaneously with, before or after transferring part of the gaseous refrigerant of the compressor inlet line to the first storage tank, the method further comprises:
at least a part of the liquid refrigerant stored in the second storage tank is released to a circulation pipeline of the air conditioner,
the second storage tank is arranged on a pipeline between the outdoor heat exchanger and the indoor heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710656022.7A CN107504706B (en) | 2017-08-03 | 2017-08-03 | Air conditioner and rapid cooling method thereof |
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| CN201710656022.7A CN107504706B (en) | 2017-08-03 | 2017-08-03 | Air conditioner and rapid cooling method thereof |
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| CN107504706A CN107504706A (en) | 2017-12-22 |
| CN107504706B true CN107504706B (en) | 2021-04-20 |
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|---|---|---|---|---|
| CN108731311B (en) * | 2018-07-12 | 2024-05-10 | 珠海凌达压缩机有限公司 | Compressor assembly and air conditioning system thereof |
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