CN105588354A - Air conditioner and refrigerating method thereof - Google Patents
Air conditioner and refrigerating method thereof Download PDFInfo
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- CN105588354A CN105588354A CN201510202517.3A CN201510202517A CN105588354A CN 105588354 A CN105588354 A CN 105588354A CN 201510202517 A CN201510202517 A CN 201510202517A CN 105588354 A CN105588354 A CN 105588354A
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Abstract
The embodiment of the invention provides an air conditioner and a refrigerating method thereof and relates to the technical field of air conditioners. The probability that the liquid hammering danger happens to a compressor when an air conditioner works in the low-temperature environment can be reduced. The air conditioner comprises a condenser, a compressor and a liquid storage device and further comprises a flow distributing pipeline. One end of the flow distributing pipeline is communicated with a pipeline, conveying refrigerants to the condenser, of the compressor, and the other end of the flow distributing pipeline is communicated with the liquid storage device. The air conditioner and the refrigerating method are used for air conditioner refrigerating.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of air-conditioning and refrigerating method thereof.
Background technology
Along with improving constantly of people's quality of life, the use of air-conditioning is more and more universal. People are notOnly need air-conditioning to lower the temperature in hot summer, in cold winter, people's heating of movingAfter, also may need air conditioner refrigerating to lower the temperature. But, when operation of air conditioner is at lower temperatureTime, easily there is the danger of liquid hammer in the compressor in air-conditioner outdoor unit.
In prior art, as shown in Figure 1, the schematic diagram of the refrigeration system that Fig. 1 is air-conditioning. ?Under normal circumstances, the cold-producing medium of low-temp low-pressure becomes HTHP after the interior compression of compressor 101Gas enter condenser 102, cold-producing medium is at the interior high pressure that becomes after condensation of condenser 102Liquid enters into evaporimeter 104, the refrigeration after evaporation after electric expansion valve 103 throttlingsAgent enters the interior compressor 101 that enters after gas-liquid separation of reservoir 105, so just enters downA cyclic process. But, in the time that outdoor environment temperature is too low, can cause outside heat exchange amountBigger than normal, and then cause the degree of supercooling of cold-producing medium of condenser 102 bigger than normal, thereby through electronicsAfter expansion valve 103 throttlings, in the cold-producing medium of gas-liquid mixed, liquid refrigerant ratio is bigger than normal, such mistakeMany liquid refrigerants can enter into evaporimeter 104, and then cause the liquid in reservoir 105State cold-producing medium increases, and the probability that sucks liquid refrigerant when compressor 101 is worked like this increases,The probability that causes compressor 101 that liquid hammer danger occurs increases.
Summary of the invention
Embodiments of the invention provide a kind of low-temperature refrigeration air conditioner and refrigerating method thereof, can reduceThe probability of compressor generation liquid hammer danger when air-conditioning is worked in low temperature environment.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, the embodiment of the present invention provides a kind of air-conditioning, and described air-conditioning comprises: condenser,Compressor, and reservoir, described air-conditioning also comprises: distribution pipeline, described distribution pipelineOne end and described compressor be to the pipeline connection of described condenser refrigerant conveying, the other end and instituteStating reservoir is communicated with.
On the other hand, the embodiment of the present invention provides a kind of refrigerating method, for air-conditioning, described inAir-conditioning comprises condenser, compressor, and reservoir, and described air-conditioning also comprises: distribution pipeline,And be arranged on the valve on described distribution pipeline, one end of described distribution pipeline and described compressionMachine is to the pipeline connection of described condenser refrigerant conveying, and the other end is communicated with described reservoir;Described method comprises:
Control described valve opening.
The air-conditioning that the embodiment of the present invention provides and refrigerating method thereof, described air-conditioning comprises condenser,Compressor, and reservoir, described air-conditioning also comprises: distribution pipeline, one end of distribution pipelineWith the pipeline connection of compressor to condenser refrigerant conveying, the other end is communicated with reservoir. Phase, in prior art, the air-conditioning that the embodiment of the present invention provides is by carrying to condenser at compressorOn the pipeline of cold-producing medium, be communicated with a distribution pipeline, this distribution pipeline can will be pressed through compressorA part of high-temperature high-pressure refrigerant after contracting is incorporated in reservoir, utilizes this part HTHPLiquid refrigerant in cold-producing medium heating reservoir, makes the liquid refrigerant vapour in reservoirChange, thus the ratio of the liquid refrigerant in minimizing reservoir, and then reduced compressor in workAs time suck the probability of liquid refrigerant, reduced the probability of compressor generation liquid hammer danger.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, belowTo the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, aobvious andEasily insight, the accompanying drawing in the following describes is only some embodiments of the present invention, for this areaThose of ordinary skill, is not paying under the prerequisite of creative work, can also be according to theseAccompanying drawing obtains other accompanying drawing.
The schematic diagram of a kind of air-conditioning refrigeration system that Fig. 1 provides for prior art;
The schematic diagram of a kind of air-conditioning refrigeration system that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of a kind of air-conditioning refrigeration system that Fig. 3 provides for another embodiment of the present invention;
The schematic diagram of a kind of air-conditioning refrigeration system that Fig. 4 provides for further embodiment of this invention;
A kind of air conditioner refrigerating method flow diagram that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present inventionCase is clearly and completely described, and obviously, described embodiment is only one of the present inventionDivide embodiment, instead of whole embodiment. Based on the embodiment in the present invention, this area is generalLogical technical staff is not making the every other embodiment obtaining under creative work prerequisite,All belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of air-conditioning, and as shown in Figure 2, described air-conditioning comprises: condensationDevice 201, compressor 202, and reservoir 203, described air-conditioning also comprises: distribution pipeline204, one end of distribution pipeline 204 and compressor 202 are to condenser 201 refrigerant conveyingsPipeline connection, the other end is communicated with reservoir 203.
Shown in figure 2, one end of distribution pipeline 204 and compressor 202 are to condenser 201The pipeline connection of refrigerant conveying, the other end is communicated with reservoir 203, like this can be by compressionThe cold-producing medium that machine 202 is carried to condenser 201 branches to reservoir 203.
While refrigeration in low temperature environment due to air-conditioning, low temperature environment can cause outside heat exchange amount inclined to one sideGreatly, and then cause the degree of supercooling of condenser 201 bigger than normal, thereby save through electric expansion valve 205In gas-liquid mixed refrigerant after stream, liquid refrigerant ratio is bigger than normal, too much like this liquid refrigerationAgent meeting enters into evaporimeter 206, and then causes entering the liquid refrigerant in reservoir 203Increase. By the pipeline connection isocon to condenser 201 refrigerant conveyings at compressor 202Road 204, this distribution pipeline 204 can be carried system from compressor 202 to condenser 201Cryogen branches to reservoir 203, and a part is through the high temperature and high pressure gas of compressor 202 like thisCan arrive in reservoir 203 by distribution pipeline 204, for heating the liquid of reservoir 203State cold-producing medium, makes its vaporization, and therefore the liquid refrigerant in reservoir 203 reduces, and then pressesThe probability that liquid hammer danger occurs contracting machine 202 reduces.
So,, compared to prior art, the air-conditioning that the embodiment of the present invention provides is by pressingContracting machine is communicated with a distribution pipeline on the pipeline of condenser refrigerant conveying, and this distribution pipeline canSo that a part of high-temperature high-pressure refrigerant after compressor compresses is incorporated in reservoir, profitWith the liquid refrigerant in this part high-temperature high-pressure refrigerant heating reservoir, make in reservoirLiquid refrigerant vaporization, thereby reduce the ratio of the liquid refrigerant in reservoir, and then subtractLack the probability that compressor sucks liquid refrigerant in the time of work, reduced compressor generation liquidHit dangerous probability.
Further, described air-conditioning also comprises: be arranged on the valve on distribution pipeline.
Described valve is the parts that can play on-off action, example, valve can be magnetic valveOr electric expansion valve etc., the embodiment of the present invention does not limit this. But due to electromagnetic valve structureSimply, cost of manufacture is lower, so preferably, valve is magnetic valve.
Further, described air-conditioning also comprises control module; Described control module is for control valveDoor is opened or is closed.
Described control module can be opened by by-pass valve control, and a part of high-temperature high-pressure refrigerant is by dividingCold-producing medium in stream pipeline heating reservoir, makes the refrigerants vaporize in reservoir. Work as liquid storageWhen liquid refrigeration agent content in device is few, also can close by control module by-pass valve control.Example, described control module can be a control circuit, or can be also a CPU(CentralProcessingUnit, central processing unit) chip, the embodiment of the present invention is not to thisLimit. Described control module can be the control arranging for the valve on distribution pipeline separatelyDevice processed, also can use the control substrate of air-conditioning in practical application. Preferably, use air-conditioningControl substrate as control module, do not need to arrange extra control device, like this reduceTechnical costs, saved resource.
Further, described air-conditioning also comprises collecting unit; Collecting unit is used for gathering reservoirIn amount of liquid; Control module is specifically for being greater than or equal to the when amount of liquid in reservoirWhen one predetermined threshold value, by-pass valve control is opened.
Wherein, the amount of liquid in described reservoir can comprise various ways, example, liquidAmount can be the volume of liquid, or the liquid level of liquid etc., the embodiment of the present invention is not limit thisFixed.
Described the first predetermined threshold value is the value setting in advance, and those skilled in the art can be according to realityBorder situation or experience arrange, and the embodiment of the present invention does not limit this. Example, ifThe amount of liquid of reservoir is liquid capacity, in the time that the volume of reservoir is V, and the first default thresholdValue generally can be made asOrIf the amount of liquid of reservoir is liquid level, work as liquid storageWhen the height of device is H, the first predetermined threshold value generally can be made asOr
Example, in the time that the amount of liquid of reservoir is liquid level, described collecting unit can beLiquid level gauge, for measuring the liquid level of reservoir, when the height of reservoir is H, theOne predetermined threshold value isTime, utilize liquid level gauge in collecting unit to collect this moment in reservoirLiquid level h, if the liquid level h in reservoir is greater than or equal to the first predetermined threshold valueTime, show to have more liquid in reservoir, now control module can control valveDoor is opened, and a part of high-temperature high-pressure refrigerant is entered in reservoir, in heating reservoirLiquid refrigerant, makes it vaporization, and the amount of liquid in reservoir will reduce like this, liquid levelH will reduce, when the liquid level h in reservoir is less than the first predetermined threshold valueTime, controlUnit processed can be closed by by-pass valve control, stops carrying high-temperature high-pressure refrigerant to reservoir.
Optionally, in the time that the amount of liquid of reservoir is liquid level, described collecting unit is all rightFor switch, switch can be arranged on height corresponding to the first predetermined threshold value in reservoirPlace, for example, when the height of reservoir is H, the first predetermined threshold value isTime, described float is openedPass can be arranged on reservoirAt The Height, for detection of reservoirAt The Height beThe no liquid that exists, works as reservoirAt The Height while there is liquid, the ball float in switchThe buoyancy that is subject to liquid rises, and closed switch, makes the switch can be to control moduleSend feedback signal, described control module is receiving after feedback signal, and by-pass valve control is opened,Utilize the liquid refrigerant in high-temperature high-pressure refrigerant heating reservoir.
Further, described air-conditioning also comprises outdoor machine fan; Control module also specifically forWhen by-pass valve control is opened, reduce the rotating speed of outdoor machine fan.
In the time that the liquid refrigerant in reservoir is more, can be by reducing turning of outdoor machine fanSpeed reduces the liquid refrigerant entering in reservoir. Be specially the rotating speed that reduces outdoor fan,The heat exchange amount of condenser can reduce like this, causes the outlet temperature of condenser to raise, and then condensationIn device, the degree of supercooling of cold-producing medium reduces, the liquid state that enters like this evaporimeter after electric expansion valveThe ratio regular meeting of cold-producing medium reduces, and the liquid refrigerant therefore entering in reservoir reduces, and then subtractsThe probability that sucks liquid refrigerant when little compressor operating, has reduced compressor generation liquid hammerDangerous probability.
In practical application, can, before by-pass valve control is opened, reduce the rotating speed of outdoor machine fan;Also can, after by-pass valve control is opened, reduce the rotating speed of outdoor machine fan; Or also can beWhen by-pass valve control is opened, reduce the rotating speed of outdoor machine fan. Preferably, at by-pass valve controlWhen unlatching, reduce the rotating speed of outdoor machine fan, can make the amount of liquid in reservoir existIn short period, reduce fast, further reduce the probability of compressor generation liquid hammer danger.
Further, as shown in Figure 3, described air-conditioning also comprises cross valve 207; Distribution pipelineOne end of 204 and cross valve 207 are to the pipeline connection of condenser 201 refrigerant conveyings.
Shown in figure 3, cross valve 207 comprises that four are controlled valve port, one of them control valveMouth is communicated with condenser 201, transports from compressor to condenser 201 by transfer pipelineCold-producing medium after 202 compressions, described distribution pipeline 204 is communicated with just on this transfer pipeline.
Further, as shown in Figure 4, described reservoir comprises the first reservoir 2031 of connectionWith the second reservoir 2032.
Because the general capacity of the first reservoir 2031 carrying in compressor is less, when needs lowWhen temperature refrigeration, more liquid refrigerant can enter into the first reservoir 2031, easily makesBecome the spill-over of the first reservoir 2031, affect the normal work of compressor 202, so canOn the first reservoir 2031 carrying at compressor 202, be communicated with again second reservoir 2032,Increase the liquid storage ability of air-conditioner outdoor unit, reduce compressor 202 and occur the probability of liquid hammer danger.
Preferably, shown in figure 4, the first reservoir 2031 with carry to compressor 202The pipeline connection of cold-producing medium; The second reservoir 2032 is communicated with distribution pipeline 204. Large like thisOperative liquid cold-producing medium can be stayed in the second reservoir 2032, and enters the first reservoir 2031In liquid refrigerant can be still less, the compressor 202 that therefore with the first reservoir 2031 is communicated withThe probability that sucks liquid refrigerant diminishes, and has further reduced compressor 202 liquid hammer danger occursProbability.
The air-conditioning that the embodiment of the present invention provides, comprises condenser, compressor, and reservoir,Described air-conditioning also comprises: distribution pipeline, one end and the compressor of distribution pipeline are carried to condenserThe pipeline connection of cold-producing medium, the other end is communicated with reservoir. Compared to prior art, the present inventionThe air-conditioning that embodiment provides is by being communicated with on the pipeline of condenser refrigerant conveying at compressorA distribution pipeline, this distribution pipeline can be by high a part of high temperature after compressor compressesCompression refrigerant is incorporated in reservoir, utilizes in this part high-temperature high-pressure refrigerant heating reservoirLiquid refrigerant, make the vaporization of liquid refrigerant in reservoir, thereby reduce in reservoirThe ratio of liquid refrigerant, and then reduced compressor and in the time of work, sucked liquid refrigerantProbability, has reduced the probability of compressor generation liquid hammer danger.
Another embodiment of the present invention provides a kind of refrigerating method, and for air-conditioning, air-conditioning comprises condensationDevice, compressor, and reservoir, described air-conditioning also comprises: distribution pipeline, and be arranged onValve on distribution pipeline, one end of distribution pipeline and compressor are to condenser refrigerant conveyingPipeline connection, the other end is communicated with reservoir; Described method comprises: by-pass valve control is opened.
So,, compared to prior art, the refrigerating method that the embodiment of the present invention provides passes throughBe controlled at compressor to the valve on the coconnected distribution pipeline of pipeline of condenser refrigerant conveyingDoor is opened, and this distribution pipeline can be by a part of HTHP refrigeration after compressor compressesAgent is incorporated in reservoir, utilizes the liquid state in this part high-temperature high-pressure refrigerant heating reservoirCold-producing medium, makes the liquid refrigerant vaporization in reservoir, thereby reduces the liquid state in reservoirThe ratio of cold-producing medium, and then reduced compressor and suck the probability of liquid refrigerant in the time of work,Reduced the probability of compressor generation liquid hammer danger.
Further, by-pass valve control is opened and is comprised: gather the amount of liquid in reservoir; Work as liquid storageWhen amount of liquid in device is greater than or equal to the first predetermined threshold value, by-pass valve control is opened.
Preferably, air-conditioning also comprises outdoor machine fan; Described method also comprises: at by-pass valve controlWhen unlatching, reduce the rotating speed of outdoor machine fan.
Concrete, the refrigerating method that the embodiment of the present invention provides as shown in Figure 5, method step bagDraw together:
Amount of liquid in step 501, collection reservoir; Execution step 502.
Step 502, judge whether amount of liquid in reservoir is greater than or equal to the first default thresholdValue; If the amount of liquid in reservoir is greater than or equal to the first predetermined threshold value, execution step 503;If the amount of liquid in reservoir is less than the first predetermined threshold value, execution step 501.
Step 503, by-pass valve control are opened, and reduce the rotating speed of outdoor machine fan simultaneously.
The refrigerating method that the embodiment of the present invention provides, for air-conditioning, described air-conditioning comprises condenser,Compressor, and reservoir, described air-conditioning also comprises distribution pipeline, and is arranged on isoconValve on road, one end of distribution pipeline and compressor connect to the pipeline of condenser refrigerant conveyingLogical, the other end is communicated with reservoir; Described refrigerating method comprises by-pass valve control unlatching. Compared toPrior art, the refrigerating method that the embodiment of the present invention provides is by being controlled at compressor to condenserValve opening on the coconnected distribution pipeline of pipeline of refrigerant conveying, this distribution pipeline canA part of high-temperature high-pressure refrigerant after compressor compresses is incorporated in reservoir, utilizesLiquid refrigerant in this part high-temperature high-pressure refrigerant heating reservoir, makes in reservoirLiquid refrigerant vaporization, thereby the ratio of the liquid refrigerant in minimizing reservoir, and then reduceCompressor suck the probability of liquid refrigerant in when work, reduced compressor generation liquid hammerDangerous probability.
The above be only the specific embodiment of the present invention, but protection scope of the present invention alsoBe not limited to this, any be familiar with those skilled in the art the present invention disclose technology modelIn enclosing, can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (12)
1. an air-conditioning, comprising: condenser, and compressor, and reservoir, is characterized in that,Described air-conditioning also comprises: distribution pipeline, one end of described distribution pipeline and described compressor are to instituteState the pipeline connection of condenser refrigerant conveying, the other end is communicated with described reservoir.
2. air-conditioning according to claim 1, is characterized in that, described air-conditioning also comprises:Be arranged on the valve on described distribution pipeline.
3. air-conditioning according to claim 2, is characterized in that, described air-conditioning also comprises controlUnit processed;
Described control module is used for controlling described valve opening or closes.
4. air-conditioning according to claim 3, is characterized in that, described air-conditioning also comprises and adoptingCollection unit;
Described collecting unit is for gathering the amount of liquid of described reservoir;
Described control module is specifically for being greater than or equal to the when amount of liquid in described reservoirWhen one predetermined threshold value, control described valve opening.
5. air-conditioning according to claim 3, is characterized in that, described air-conditioning also comprises chamberOuter machine fan;
Described control module also, specifically in the time controlling described valve opening, reduces described outdoorThe rotating speed of machine fan.
6. air-conditioning according to claim 1, is characterized in that, described air-conditioning also comprises fourLogical valve;
One end of described distribution pipeline and described cross valve are to the pipe of described condenser refrigerant conveyingRoad is communicated with.
7. according to the air-conditioning described in any one claim in claim 1 to 6, its featureBe, described valve is magnetic valve.
8. according to the air-conditioning described in any one claim in claim 1 to 6, its featureBe, described reservoir comprises the first reservoir and second reservoir of connection.
9. air-conditioning according to claim 8, is characterized in that, described the first reservoir withTo the pipeline connection of described compressor refrigerant conveying; Described the second reservoir and described isoconRoad is communicated with.
10. a refrigerating method, for air-conditioning, described air-conditioning comprises condenser, compressor,And reservoir, it is characterized in that, described air-conditioning also comprises: distribution pipeline, and be arranged onValve on described distribution pipeline, one end of described distribution pipeline and described compressor are to described coldThe pipeline connection of condenser refrigerant conveying, the other end is communicated with described reservoir; Described method bagDraw together:
Control described valve opening.
11. methods according to claim 10, is characterized in that, the described valve of described controlDoor is opened and is comprised:
Gather the amount of liquid in described reservoir;
In the time that the amount of liquid in described reservoir is greater than or equal to the first predetermined threshold value, control instituteState valve opening.
12. methods according to claim 10, is characterized in that, described air-conditioning also comprisesOutdoor machine fan;
Described method also comprises: in the time of the described valve opening of described control, reduce described off-premises stationThe rotating speed of fan.
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| CN201510202517.3A CN105588354B (en) | 2015-04-23 | 2015-04-23 | A kind of air-conditioning and its refrigerating method |
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| CN201510202517.3A CN105588354B (en) | 2015-04-23 | 2015-04-23 | A kind of air-conditioning and its refrigerating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016741A (en) * | 2016-06-02 | 2016-10-12 | 珠海格力电器股份有限公司 | Method for performance improvement of heat pump hot water unit |
| CN106091510A (en) * | 2016-08-19 | 2016-11-09 | 芜湖美智空调设备有限公司 | The control method of air-conditioner, control device and air-conditioner |
| CN110425112A (en) * | 2019-08-12 | 2019-11-08 | 郑州海尔空调器有限公司 | The control method of the air-conditioning of anti-compressor liquid hammer and anti-compressor liquid hammer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106016741A (en) * | 2016-06-02 | 2016-10-12 | 珠海格力电器股份有限公司 | Method for performance improvement of heat pump hot water unit |
| CN106091510A (en) * | 2016-08-19 | 2016-11-09 | 芜湖美智空调设备有限公司 | The control method of air-conditioner, control device and air-conditioner |
| CN106091510B (en) * | 2016-08-19 | 2018-10-16 | 芜湖美智空调设备有限公司 | Control method, control device and the air conditioner of air conditioner |
| CN110425112A (en) * | 2019-08-12 | 2019-11-08 | 郑州海尔空调器有限公司 | The control method of the air-conditioning of anti-compressor liquid hammer and anti-compressor liquid hammer |
| CN110425112B (en) * | 2019-08-12 | 2022-09-06 | 郑州海尔空调器有限公司 | Compressor liquid impact prevention air conditioner and compressor liquid impact prevention control method |
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Address after: 266736 Hisense Road 1, South Village Town, Pingdu City, Qingdao, Shandong Applicant after: Hisense (Shandong) Air-conditioning Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Qingdao, Shandong Province, No. 151 Applicant before: Hisense (Shandong) Air-conditioning Co., Ltd. |
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