CN104633999A - Variable-frequency air conditioner outdoor unit - Google Patents
Variable-frequency air conditioner outdoor unit Download PDFInfo
- Publication number
- CN104633999A CN104633999A CN201510097846.6A CN201510097846A CN104633999A CN 104633999 A CN104633999 A CN 104633999A CN 201510097846 A CN201510097846 A CN 201510097846A CN 104633999 A CN104633999 A CN 104633999A
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- China
- Prior art keywords
- frequency
- variable
- oil
- compressor
- air conditioner
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F25B31/00—Compressor arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/10—Arrangement or mounting thereof
-
- 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
Abstract
The invention discloses a variable-frequency air conditioner outdoor unit which comprises a variable-frequency compressor, a gas-liquid separator and an oil separator. The gas-liquid separator is communicated with an air section pipe of the variable-frequency compressor, the oil separator is communicated with the outflow end of the variable-frequency compressor and draws forth an oil return pipeline, and the oil return pipeline is communicated with the air suction pipe of the variable-frequency compressor. The air suction pipe of the variable-frequency compressor is communicated with the oil separator, so that compressor oil can directly return to the variable-frequency compressor through the pipeline, in other words, one oil return pipeline of the variable-frequency compressor is added, oil return capability of the variable-frequency compressor is additionally arranged on a device, and when the variable-frequency compressor runs at high rotation speed, the amount of discharged oil increased relative to running at low speed can be supplemented by the additionally arranged oil return pipeline. By the design, the technical problem that the compressor is damaged due to insufficient oil return caused by the fact that the amount of the discharged oil is increased and decreased with changes of rotation speed of the variable-frequency compressor in the variable-frequency air conditioner outdoor unit is solved.
Description
Technical field
The present invention relates to convertible frequency air-conditioner technical field, more particularly, relate to a kind of frequency-variable air conditioner outdoor machine.
Background technology
Promote the policy of energy-saving and emission-reduction energetically in country under, convertible frequency air-conditioner is progressively universal widely to be used.So-called convertible frequency air-conditioner, refer to and add a frequency converter in the structure of conventional air-conditioning, compressor is the heart of air-conditioning, its rotating speed directly has influence on the service efficiency of air-conditioning, frequency converter is just used to the control system of controlling and adjustment compressor rotary speed, make it to be in best rotary regimes all the time, thus improve Energy Efficiency Ratio, usually than conventional air conditioner energy saving 20% ~ 30%.
Its basic structure is identical with common air-conditioning with refrigeration principle.The main frame of convertible frequency air-conditioner be automatically carry out infinite variable speed; it can provide required cold (heat) amount automatically according to room availability; after indoor temperature reaches desired value; air-conditioner host is then accurately can keep the operate at constant speed of this temperature; realize " not shutting down running ", thus ensure the stable of environment temperature.Because frequency changer is without starting heavy current impact frequently, and be operated on low speed, first time starts again only needs few time just can reach setting value always, therefore economize on electricity obviously, and the efficiency of namely freeze (heat) is just much higher.
But inventor finds, also there are some problems in commercial convertible frequency air-conditioner field, namely when there is the situation of Multi-compressor parallel in the off-premises station of convertible frequency air-conditioner, there is the technical problem of balancing oil in compressor in parallel, the i.e. Suck and exhaust pressure of each compressor, some differences can be there are in suction and discharge coolant quantity, this species diversity can cause shift phenomenon or the disappearance of compressor oil, particularly for the air-conditioning of frequency-changeable compressor and constant speed compressor parallel combination, because the range of speeds of frequency-changeable compressor can step-less adjustment, when frequency-changeable compressor height rotating speed runs, its capacity increases, oil drain quantity also increases thereupon, if the now words refilling low on fuel of frequency-changeable compressor, will cause that frequency-changeable compressor is as easy as rolling off a log occurs petrol starvation, and petrol starvation can cause compressor not run well, if things go on like this damage compressor.
In sum, how effectively to solve compressor oil return deficiency in frequency-variable air conditioner outdoor machine, causing the technical problem of compressor damage, is current those skilled in the art's urgent problem.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of frequency-variable air conditioner outdoor machine, the structural design of this frequency-variable air conditioner outdoor machine can solve compressor oil return deficiency in frequency-variable air conditioner outdoor machine effectively, causes the technical problem of compressor damage.
In order to reach above-mentioned technical purpose, the invention provides following technical scheme:
A kind of frequency-variable air conditioner outdoor machine, the gas-liquid separator comprising frequency-changeable compressor and be connected with the air intake duct of frequency-changeable compressor, also comprise the oil eliminator be connected with the outflow end of frequency-changeable compressor, oil eliminator also draws return line, and return line is communicated with the air intake duct of frequency-changeable compressor.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, return line splits into main return line by three-way device and the first oil return branch road of being directly communicated with the air intake duct of frequency-changeable compressor and the second oil return branch road be directly communicated with gas-liquid separator.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, the first oil return branch road is provided with the magnetic valve of controlled opening and closing.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, the first oil return branch road is provided with the first reducer pipe and the first capillary.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, the second oil return branch road is provided with the second reducer pipe and the second capillary that match with the first reducer pipe and the first capillary model.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, main return line is provided with filter.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, the first oil return branch road is provided with U-shaped pipe.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, the off-premises station inside of convertible frequency air-conditioner also comprises the constant speed compressor in parallel with frequency-changeable compressor.
Frequency-variable air conditioner outdoor machine provided by the invention, the gas-liquid separator comprising frequency-changeable compressor and be connected with the air intake duct of frequency-changeable compressor, also comprise the oil eliminator be connected with the outflow end of frequency-changeable compressor, oil eliminator also draws return line, and return line is communicated with the air intake duct of frequency-changeable compressor.The air intake duct of frequency-changeable compressor is connected with oil eliminator by the present invention, compressor oil directly can be back in frequency-changeable compressor by this pipeline, be equivalent to the return line adding a frequency-changeable compressor, also on device, just add the oil return ability of frequency-changeable compressor, when frequency-changeable compressor height rotating speed runs, its oil drain quantity increased relative to low-speed run state just can be supplemented by the return line set up.This design to solve in frequency-variable air conditioner outdoor machine frequency-changeable compressor due to its rotating speed and changes, and it is not enough that oil drain quantity increases and decreases the oil return caused thereupon, causes the technical problem of compressor damage.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the return line that Fig. 1 provides for the embodiment of the present invention;
The frequency-variable air conditioner outdoor machine internal duct structural representation that Fig. 2 provides for the embodiment of the present invention.
Wherein in Fig. 2, the part of dotted portion instruction is the approximate location that return line is arranged.
In accompanying drawing, mark is as follows:
1 be main return line, 11 be magnetic valve for filter, 2 is the first oil return branch road, 21,22 be three-way device for shape pipe, 23 be the first capillary, 24 be the first reducer pipe, 3 be the second oil return branch road, 33 be the second capillary, 34 is the second reducer pipe, 4.
Detailed description of the invention
The embodiment of the invention discloses a kind of frequency-variable air conditioner outdoor machine, not enough to solve compressor oil return in frequency-variable air conditioner outdoor machine, cause the technical problem of compressor damage.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 2, be respectively structural representation and the off-premises station internal duct structural representation of the return line that the embodiment of the present invention provides.
Frequency-variable air conditioner outdoor machine provided by the invention, the gas-liquid separator comprising frequency-changeable compressor 201 and be connected with the air intake duct of frequency-changeable compressor 201, also comprise the oil eliminator 203 be connected with the outflow end of frequency-changeable compressor 201, oil eliminator 203 also draws return line, and return line is communicated with the air intake duct of frequency-changeable compressor 201.On the basis that prior art pipeline connects, set up one is communicated with frequency-changeable compressor 201 return line from oil eliminator 203, enable compressor oil directly get back to the air intake duct of frequency-changeable compressor 201 by this return line, enter frequency-changeable compressor 201, work for frequency-changeable compressor 201.
The air intake duct of frequency-changeable compressor 201 is connected with oil eliminator 203, make compressor oil directly can be back in frequency-changeable compressor 201 by this pipeline, be equivalent to the return line adding a frequency-changeable compressor 201, also on device, just add the oil return ability of frequency-changeable compressor 201, when the high rotating speed of frequency-changeable compressor 201 runs, its oil drain quantity increased relative to low-speed run state just can be supplemented by the return line set up.This design to solve in frequency-variable air conditioner outdoor machine frequency-changeable compressor 201 due to its rotating speed and changes, and it is not enough that oil drain quantity increases and decreases the oil return caused thereupon, causes the technical problem of compressor damage.
For optimizing the effect of refrigerant flow distribution in oil circuit in above-described embodiment further, in the frequency-variable air conditioner outdoor machine of above-described embodiment, return line splits into main return line 1 by three-way device 4 and the first oil return branch road 2 of being directly communicated with the air intake duct of frequency-changeable compressor 201 and the second oil return branch road 3 be directly communicated with gas-liquid separator 204.Namely in above-mentioned return line, arrange three-way pipe, this three-way pipe preferably uses U-shaped threeway in the present embodiment, and main return line 1 splits into two branch roads by this three-way device 4, and one is directly communicated with gas-liquid separator 204, and another is communicated with frequency-changeable compressor 201.
Adopt this design that three-way device 4 is set on return line, can either be frequency-changeable compressor 201 transportation work medium under high rotation speed operation state by return line, again can by the design of this distributing T-pipe pipeline, when frequency-changeable compressor 201 low-speed running row pressure contracting oil mass is less, the compressed oil of drawing from oil eliminator 203 is introduced gas-liquid separator 204 by the second oil return branch road 3, and it is inner directly not enter frequency-changeable compressor 201.
Control for optimizing further in technique scheme the accuracy that compressed oil passes back into frequency-changeable compressor 201, in above-mentioned frequency-variable air conditioner outdoor machine, the first oil return branch road 2 is provided with the magnetic valve 21 of controlled opening and closing.Wherein in the present embodiment, the magnetic valve 21 of controlled opening and closing is made a general reference, can realize automatically controlling by external force, or by-pass valve control opening and closing or by-pass valve control adjust its valve body by flow, be not limited to this implementation of Electromagnetic Control, also being not limited to only open to shut to regulate, also can be the adjustment by caliber size, adopts this statement of magnetic valve 21 just to conveniently referring to and describing in the present embodiment.
Adopt this design that magnetic valve 21 is set on the first backflow branch road, when frequency-changeable compressor 201 high rotation speed operation, capacity is relatively large, oil drain quantity is also relatively large, magnetic valve 21 in the road of the first backflow is opened by the controlling mechanism now by presetting, the pipeline caliber on the road of another first backflow is opened comparatively large, and the compressed oil that can meet large discharge passes through condition; And when frequency-changeable compressor 201 keeps the comparatively slow-speed of revolution to operate, capacity reduces relatively, and the oil drain quantity of system also reduces thereupon, compressor does not need the input of the compressed oil of the large discharge as under high speed conditions, so now magnetic valve 21 cuts out or opens less angle by controlling mechanism, require that another valve is in low discharge or the operating mode without flow depending on specific works situation, met compressor operating demand.Adopt this technical scheme adding magnetic valve 21 to improve and control the accuracy that compressed oil passes back into frequency-changeable compressor 201, the compressor operation of another convertible frequency air-conditioner is more rationally with steady.
For optimizing the distribution of compressed oil in return line in technique scheme further, in frequency-variable air conditioner outdoor machine in the above-described embodiments, the first oil return branch road 2 is provided with the first reducer pipe 24 and the first capillary 23.Wherein it should be noted that reducer pipe and capillary are the plumbing being installed on flow in the combing control valve in return line.
Adopt this technical scheme that first reducer pipe 24 and the first capillary 23 are set on the first oil return branch road 2, under the compressor operating state that can separately open completely at magnetic valve 21, better control enters the flow of the compressed oil of frequency-changeable compressor 201 by return line, make in its range of flow remaining on the work of applicable frequency-changeable compressor 201.
For optimizing the distribution of compressed oil in return line in technique scheme further, in frequency-variable air conditioner outdoor machine in the above-described embodiments, the second oil return branch road 3 is provided with the second reducer pipe 34 and the second capillary 33 matched with the first reducer pipe 24 and the first capillary 23 model.
Adopt this on the second oil return branch road 3, the technical scheme of the second reducer pipe 34 and the second capillary 33 matched with the first reducer pipe 24 on the branch road of the first oil return and the first capillary 23 is set, compressed oil can be made to pass through return line, the assignment of traffic flowing into the suction inlet of frequency-changeable compressor 201 and the compressed oil of gas-liquid separator 204 respectively is more rationally applicable to compressor and each first closes parts everything goes well with your work and carries out, order enters frequency-changeable compressor 201 and more adapts to practical working situation with the flowrate proportioning of the compressed oil entering gas-liquid separator 204, optimize the exploitativeness of the present embodiment.
For optimizing in technique scheme further, on the basis of above-described embodiment, the main return line 1 in frequency-variable air conditioner outdoor machine is provided with filter 11.
Adopt this technical scheme that filter 11 is set on main return line 1; can before compressed oil enters frequency-changeable compressor 201; before carrying out compression work by compressor; first carry out filtering and impurity removing operation, the impurity that may exist in filtering compressed oil, optimize the working environment of compressor; protection compressor; make compressor work under clean environment on the original basis, improve its working environment, also just extend the service life of frequency-changeable compressor 201 accordingly.
For optimizing technique scheme further, on the basis of technique scheme, in above-mentioned frequency-variable air conditioner outdoor machine, the first oil return branch road 2 is provided with U-shaped pipe 22.
The normal high low head adopting U-shaped pipe 22 to adjust two ends in pipeline in piping installation, in the road of the first backflow in this example, U-shaped pipe 22 is set, the adjustment of high low head in pipeline can be completed, the compressed oil in return line is made to go together smooth and easy, the compressor in more applicable technical scheme and the working condition of pipeline thereof.
For optimizing technique scheme further, on the basis of technique scheme, in above-mentioned frequency-variable air conditioner outdoor machine, the off-premises station inside of convertible frequency air-conditioner also comprises the constant speed compressor 202 in parallel with frequency-changeable compressor 201.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a frequency-variable air conditioner outdoor machine, the gas-liquid separator (204) comprising frequency-changeable compressor (201) and be connected with the air intake duct of described frequency-changeable compressor (201), also comprise the oil eliminator (203) be connected with the outflow end of described frequency-changeable compressor (201), it is characterized in that, described oil eliminator (203) also draws return line, and described return line is communicated with the air intake duct of described frequency-changeable compressor (201).
2. frequency-variable air conditioner outdoor machine according to claim 1, it is characterized in that, described return line splits into main return line (1) by three-way device (4) and the first oil return branch road (2) of being directly communicated with the air intake duct of described frequency-changeable compressor (201) and the second oil return branch road (3) be directly communicated with described gas-liquid separator (204).
3. frequency-variable air conditioner outdoor machine according to claim 2, is characterized in that, described first oil return branch road (2) is provided with the magnetic valve (21) of controlled opening and closing.
4. frequency-variable air conditioner outdoor machine according to claim 3, is characterized in that, described first oil return branch road (2) is provided with the first reducer pipe (24) and the first capillary (23).
5. frequency-variable air conditioner outdoor machine according to claim 4, it is characterized in that, described second oil return branch road (3) is provided with the second reducer pipe (34) and the second capillary (33) that match with described first reducer pipe (24) and the first capillary (23) model.
6. frequency-variable air conditioner outdoor machine according to claim 2, is characterized in that, described main return line (1) is provided with filter (11).
7. frequency-variable air conditioner outdoor machine according to claim 2, is characterized in that, described first oil return branch road (2) is provided with U-shaped pipe (22).
8. frequency-variable air conditioner outdoor machine according to claim 1, is characterized in that, described frequency-variable air conditioner outdoor machine inside also comprises the constant speed compressor (202) in parallel with described frequency-changeable compressor (201).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510097846.6A CN104633999B (en) | 2015-03-04 | 2015-03-04 | Frequency-variable air conditioner outdoor machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510097846.6A CN104633999B (en) | 2015-03-04 | 2015-03-04 | Frequency-variable air conditioner outdoor machine |
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| CN104633999A true CN104633999A (en) | 2015-05-20 |
| CN104633999B CN104633999B (en) | 2017-12-08 |
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| CN201510097846.6A Active CN104633999B (en) | 2015-03-04 | 2015-03-04 | Frequency-variable air conditioner outdoor machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747501A (en) * | 2019-10-31 | 2021-05-04 | 广东美的白色家电技术创新中心有限公司 | Compressor assembly, heat exchange system and electrical equipment |
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| CN112747501A (en) * | 2019-10-31 | 2021-05-04 | 广东美的白色家电技术创新中心有限公司 | Compressor assembly, heat exchange system and electrical equipment |
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| Publication number | Publication date |
|---|---|
| CN104633999B (en) | 2017-12-08 |
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