CN104633999B - Frequency-variable air conditioner outdoor machine - Google Patents
Frequency-variable air conditioner outdoor machine Download PDFInfo
- Publication number
- CN104633999B CN104633999B CN201510097846.6A CN201510097846A CN104633999B CN 104633999 B CN104633999 B CN 104633999B CN 201510097846 A CN201510097846 A CN 201510097846A CN 104633999 B CN104633999 B CN 104633999B
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- Prior art keywords
- frequency
- changeable compressor
- oil
- compressor
- air conditioner
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of frequency-variable air conditioner outdoor machine, the gas-liquid separator being connected including frequency-changeable compressor and with the air intake duct of frequency-changeable compressor, also include the oil eliminator being connected with the outflow end of frequency-changeable compressor, oil eliminator also draws return line, and return line connects with the air intake duct of frequency-changeable compressor.The air intake duct of frequency-changeable compressor is connected by the present invention with oil eliminator, compressor oil is set to be passed straight back to by the pipeline in frequency-changeable compressor, equivalent to the return line for adding a frequency-changeable compressor, also the oil return ability of frequency-changeable compressor is just added on device, when the high rotating speed operation of frequency-changeable compressor, it is supplemented relative to the oil drain quantity can that low-speed run state increases by the return line set up.This design solves frequency-changeable compressor in frequency-variable air conditioner outdoor machine, and, because its rotating speed changes, oil return caused by oil drain quantity increases and decreases therewith is insufficient, causes the technical problem of compressor damage.
Description
Technical field
The present invention relates to convertible frequency air-conditioner technical field, more specifically to a kind of frequency-variable air conditioner outdoor machine.
Background technology
In the case where country promotes the policy of energy-saving and emission-reduction energetically, progressively widely popularization uses convertible frequency air-conditioner.So-called frequency conversion is empty
Adjust, refer to add a frequency converter in the structure of conventional air-conditioning, compressor is the heart of air-conditioning, and its rotating speed directly influences
The service efficiency of air-conditioning, frequency converter are exactly the control system for controlling and adjusting compressor rotary speed, are allowed to all the time in optimal
Rotary regimes, so as to improve Energy Efficiency Ratio, generally than conventional air conditioner energy saving 20%~30%.
Its basic structure is identical with refrigeration principle with common air-conditioning.The main frame of convertible frequency air-conditioner be carry out automatically it is stepless
Speed change, it can automatically provide required cold (heat) amount, after indoor temperature reaches desired value, air-conditioning master according to room availability
Machine then can accurately keep the constant speed of this temperature to operate, is realized " not shutting down operating ", so as to ensure environment temperature
It is stable.Because frequency changer is without frequently starting heavy current impact, and always work on low speed, but start for the first time only need it is few
Time just can reach setting value, therefore it is obvious to economize on electricity, that is, freeze (heat) efficiency with regard to much higher.
But inventor has found, there is also some problems that the outdoor unit of i.e. convertible frequency air-conditioner is deposited in commercial convertible frequency air-conditioner field
In the situation of Multi-compressor parallel, there is the technical problem of balancing oil, i.e., the suction of each compressor in compressor in parallel
Atmospheric pressure, suction and discharge coolant quantity can have some differences, and this species diversity can cause the shift phenomenon or missing of compressor oil, especially
It is the air-conditioning for frequency-changeable compressor and constant speed compressor parallel combination, because the range of speeds of frequency-changeable compressor can stepless-adjustment
Section, when the operation of frequency-changeable compressor high rotating speed, its capacity increase, oil drain quantity also increases therewith, if now frequency-changeable compressor
If refilling low on fuel, it will cause frequency-changeable compressor to be easy to petrol starvation occur, and petrol starvation can cause compressor
It can not run well, if things go on like this damage compressor.
In summary, compressor oil return deficiency in frequency-variable air conditioner outdoor machine how is efficiently solved, causes compressor damage
Technical problem, be current those skilled in the art's urgent problem.
The content of the invention
In view of this, it is an object of the invention to provide a kind of frequency-variable air conditioner outdoor machine, the knot of the frequency-variable air conditioner outdoor machine
Structure design can efficiently solve compressor oil return deficiency in frequency-variable air conditioner outdoor machine, cause the technical problem of compressor damage.
In order to reach above-mentioned technical purpose, the present invention provides following technical scheme：
A kind of frequency-variable air conditioner outdoor machine, including frequency-changeable compressor and the gas-liquid that is connected with the air intake duct of frequency-changeable compressor point
From device, in addition to the oil eliminator being connected with the outflow end of frequency-changeable compressor, oil eliminator also draw return line, oil return pipe
Road connects with the air intake duct of frequency-changeable compressor.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, return line by three-way device shunting for main return line and with
The first oil return branch road that the air intake duct of frequency-changeable compressor directly connects and the second oil return branch road directly connected 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 controllable 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 and the first reducer pipe and the first capillary
The second reducer pipe and the second capillary that cast number is engaged.
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-tube.
Preferably, in above-mentioned frequency-variable air conditioner outdoor machine, also include inside the outdoor unit of convertible frequency air-conditioner with frequency-changeable compressor simultaneously
The constant speed compressor of connection.
Frequency-variable air conditioner outdoor machine provided by the invention, including frequency-changeable compressor and be connected with the air intake duct of frequency-changeable compressor
Gas-liquid separator, in addition to the oil eliminator being connected with the outflow end of frequency-changeable compressor, oil eliminator also draw oil return pipe
Road, return line connect with the air intake duct of frequency-changeable compressor.The air intake duct of frequency-changeable compressor is connected by the present invention with oil eliminator
It is logical, compressor oil is passed straight back to by the pipeline in frequency-changeable compressor, equivalent to adding a frequency-changeable compressor
Return line, the oil return ability of frequency-changeable compressor is also just added on device, when the high rotating speed operation of frequency-changeable compressor, its
Supplemented relative to the oil drain quantity can of low-speed run state increase by the return line set up.This design solves frequency conversion
Frequency-changeable compressor is due to the change of its rotating speed in air-conditioner outdoor unit, and oil return deficiency, causes compressor caused by oil drain quantity increases and decreases therewith
The technical problem of damage.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of return line provided in an embodiment of the present invention；
Fig. 2 is frequency-variable air conditioner outdoor machine internal duct structural representation provided in an embodiment of the present invention.
The part that dotted portion indicates in wherein Fig. 2 is the approximate location that return line is set.
Marked in accompanying drawing as follows：
1 it is main return line, 11 be filter, 2 be the first oil return branch road, 21 be magnetic valve, 22 be shape pipe, 23 is first
Capillary, 24 be the first reducer pipe, 3 be the second oil return branch road, 33 be the second capillary, 34 be the second reducer pipe, 4 be threeway dress
Put.
Embodiment
The embodiment of the invention discloses a kind of frequency-variable air conditioner outdoor machine, to solve compressor oil return in frequency-variable air conditioner outdoor machine
Deficiency, cause the technical problem of compressor damage.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1, Fig. 2 are referred to, in the structural representation and outdoor unit of return line respectively provided in an embodiment of the present invention
Portion's pipeline structure schematic diagram.
Frequency-variable air conditioner outdoor machine provided by the invention, including frequency-changeable compressor 201 and the air intake duct with frequency-changeable compressor 201
The gas-liquid separator being connected, in addition to the oil eliminator 203 being connected with the outflow end of frequency-changeable compressor 201, oil eliminator
203 also draw return line, and return line connects with the air intake duct of frequency-changeable compressor 201.In the base of prior art pipeline connection
On plinth, a return line that frequency-changeable compressor 201 is connected from oil eliminator 203 is set up, compressor oil is passed through this time
Oil pipe line is returned directly to the air intake duct of frequency-changeable compressor 201, into frequency-changeable compressor 201, makes for the work of frequency-changeable compressor 201
With.
The air intake duct of frequency-changeable compressor 201 is connected with oil eliminator 203, allows compressor oil straight by the pipeline
Take back and flow in frequency-changeable compressor 201, equivalent to the return line for adding a frequency-changeable compressor 201, also just on device
The oil return ability of frequency-changeable compressor 201 is added, when 201 high rotating speed of frequency-changeable compressor is run, it runs shape relative to low speed
The oil drain quantity can of state increase is supplemented by the return line set up.This design solves frequency conversion in frequency-variable air conditioner outdoor machine
Compressor 201 is because its rotating speed changes, and oil return deficiency, causes the technology of compressor damage to ask caused by oil drain quantity increases and decreases therewith
Topic.
It is empty in the frequency conversion of above-described embodiment for the effect of refrigerant flow distribution in oil circuit in further optimization above-described embodiment
Adjust in outdoor unit, return line is main return line 1 and straight with the air intake duct of frequency-changeable compressor 201 by the shunting of three-way device 4
The first logical oil return branch road 2 and the second oil return branch road 3 directly connected with gas-liquid separator 204 in succession.I.e. in above-mentioned oil return pipe
Three-way pipe is set in road, and the three-way pipe preferably uses U-shaped threeway in the present embodiment, and main return line 1 passes through the three-way device 4
Two branch roads are split into, one directly connects gas-liquid separator 204, another connection frequency-changeable compressor 201.
Using this design that three-way device 4 is set on return line, can either be transported by return line for high rotating speed
Turn the transportation work medium of frequency-changeable compressor 201 under state, and can enough by the design of the distributing T-pipe pipeline, is compressed in frequency conversion
In the case that the low-speed running row pressure contracting oil mass of machine 201 is less, the compressed oil drawn from oil eliminator 203 is passed through into the second oil return
Branch road 3 introduces gas-liquid separator 204, and not directly enters inside frequency-changeable compressor 201.
The accuracy of frequency-changeable compressor 201 is passed back into for control compressed oil in further optimization above-mentioned technical proposal, upper
State in frequency-variable air conditioner outdoor machine, the first oil return branch road 2 is provided with the magnetic valve 21 of controllable opening and closing.It is controllable wherein in the present embodiment
The magnetic valve 21 of opening and closing refers to, and can be realized and automatically controlled by external force, control valve opening and closing or control valve adjustment
It is not limited to this implementation of Electromagnetic Control, is also not limited to only be opened and closed regulation by the valve body of flow, or
By the regulation of caliber size, refer to and describe just to convenient using this statement of magnetic valve 21 in the present embodiment.
Using this design that magnetic valve 21 is set on the first backflow branch road, in 201 high rotating speed of frequency-changeable compressor
During operating, capacity is relatively large, and oil drain quantity is also relatively large, now by default controlling mechanism by the road of the first backflow
Magnetic valve 21 open, the pipeline caliber on the road of another first backflow is opened larger, disclosure satisfy that the compressed oil of big flow passes through bar
Part；And when frequency-changeable compressor 201 keeps relatively low rotation speed operation, capacity is relatively reduced, and the oil drain quantity of system also subtracts therewith
It is small, the input of the compressed oil for the big flow that compressor need not be as under high speed conditions, so now passing through controlling mechanism
Less angle is closed or opened to magnetic valve 21, requires that another valve is in low discharge or work without flow depending on specific works situation
Condition, compressor operating demand is met.Control compressed oil is improved using this technical scheme for adding magnetic valve 21 to pass back into
The accuracy of frequency-changeable compressor 201, the compressor operation of another convertible frequency air-conditioner are more rationally and steady.
For the distribution of compressed oil in return line in further optimization above-mentioned technical proposal, frequency conversion in the above-described embodiments
In air-conditioner outdoor unit, 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 becoming
The plumbing that footpath is managed and capillary is flow in the combing control pipe being installed in return line.
Using this technical scheme that the first reducer pipe 24 and the first capillary 23 are set on the first oil return branch road 2, energy
Enough separately under the full opening of compressor operating state of magnetic valve 21, preferably control enters frequency-changeable compressor by return line
The flow of 201 compressed oil, keep it in the range of flow that suitable frequency-changeable compressor 201 works.
For the distribution of compressed oil in return line in further optimization above-mentioned technical proposal, frequency conversion in the above-described embodiments
In air-conditioner outdoor unit, the second oil return branch road 3 is provided with second be engaged with the first reducer pipe 24 and the model of the first capillary 23
The capillary 33 of reducer pipe 34 and second.
Using this on the second oil return branch road 3, the first reducer pipe 24 and first on the branch road with the first oil return is set
The second reducer pipe 34 and the technical scheme of the second capillary 33 that capillary 23 matches, can make compressed oil pass through oil return pipe
Road, the assignment of traffic for separately flowing into the suction inlet of frequency-changeable compressor 201 and the compressed oil of gas-liquid separator 204 are more rationally adapted to
Compressor and its it is each first close part everything goes well with your work carry out, order is into frequency-changeable compressor 201 and enters gas-liquid separator 204
The flowrate proportioning of compressed oil more adapts to practical working situation, optimizes the exploitativeness of the present embodiment.
Further to optimize in above-mentioned technical proposal, on the basis of above-described embodiment, the master in frequency-variable air conditioner outdoor machine
Return line 1 is provided with filter 11.
Using this technical scheme that filter 11 is set on main return line 1, frequency conversion pressure can be entered in compressed oil
Before contracting machine 201, before being compressed work by compressor, filtering and impurity removing operation is first carried out, filters out in compressed oil and there may be
Impurity, optimize the working environment of compressor, protect compressor, make compressor work under clean environment on the original basis
Make, improve its working environment, also just extend the service life of frequency-changeable compressor 201 accordingly.
Further to optimize above-mentioned technical proposal, on the basis of above-mentioned technical proposal, in above-mentioned frequency-variable air conditioner outdoor machine
In, the first oil return branch road 2 is provided with U-tube 22.
In piping installation frequently with U-tube 22 adjust pipeline in both ends high low head, in this example first time
U-tube 22 is set in Liu Zhi roads, the regulation of high low head in pipeline can be completed, makes the compressed oil in return line go together suitable
Freely, the compressor and its working condition of pipeline being more suitable in technical scheme.
Further to optimize above-mentioned technical proposal, on the basis of above-mentioned technical proposal, in above-mentioned frequency-variable air conditioner outdoor machine,
Also include the constant speed compressor 202 in parallel with frequency-changeable compressor 201 inside the outdoor unit of convertible frequency air-conditioner.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (4)
1. a kind of frequency-variable air conditioner outdoor machine, including frequency-changeable compressor (201) and the air intake duct phase with the frequency-changeable compressor (201)
The gas-liquid separator (204) of connection, in addition to the oil eliminator being connected with the outflow end of the frequency-changeable compressor (201)
(203), it is characterised in that the oil eliminator (203) also draws return line, the return line and the frequency-changeable compressor
(201) air intake duct connection；
The return line passes through suction of three-way device (4) shunting for main return line (1) and with the frequency-changeable compressor (201)
The first oil return branch road (2) that tracheae directly connects and the second oil return branch road directly connected with the gas-liquid separator (204)
(3)；
The first oil return branch road (2) is provided with the magnetic valve (21) of controllable opening and closing；
The first oil return branch road (2) is provided with the first reducer pipe (24) and the first capillary (23)；
The second oil return branch road (3) is provided with and is engaged with first reducer pipe (24) and the first capillary (23) model
Second reducer pipe (34) and the second capillary (33).
2. frequency-variable air conditioner outdoor machine according to claim 1, it is characterised in that the main return line (1) was provided with
Filter (11).
3. frequency-variable air conditioner outdoor machine according to claim 1, it is characterised in that the first oil return branch road (2) is provided with U
Shape pipe (22).
4. frequency-variable air conditioner outdoor machine according to claim 1, it is characterised in that also wrapped inside the frequency-variable air conditioner outdoor machine
Include the constant speed compressor (202) in parallel with the frequency-changeable compressor (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097846.6A CN104633999B (en) | 2015-03-04 | 2015-03-04 | Frequency-variable air conditioner outdoor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097846.6A CN104633999B (en) | 2015-03-04 | 2015-03-04 | Frequency-variable air conditioner outdoor machine |
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| Publication Number | Publication Date |
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| CN104633999A CN104633999A (en) | 2015-05-20 |
| CN104633999B true 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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747501B (en) * | 2019-10-31 | 2023-05-05 | 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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| CN204154013U (en) * | 2014-09-24 | 2015-02-11 | 广东欧科空调制冷有限公司 | A kind of frequency conversion low temperature heat-flash air-conditioning system |
| CN204630170U (en) * | 2015-03-04 | 2015-09-09 | 深圳麦克维尔空调有限公司 | Frequency-variable air conditioner outdoor machine |
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| CN103277879B (en) * | 2013-05-03 | 2016-03-30 | 广东美的暖通设备有限公司 | Water source multi-connection air conditioning |
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| JPS6479551A (en) * | 1987-09-18 | 1989-03-24 | Matsushita Refrigeration | Heat pump type air conditioner |
| CN103017294A (en) * | 2012-12-05 | 2013-04-03 | 宁波奥克斯电气有限公司 | Heating start method of multi-split air conditioner |
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| CN104633999A (en) | 2015-05-20 |
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