CN106958892A - Air-conditioner - Google Patents
Air-conditioner Download PDFInfo
- Publication number
- CN106958892A CN106958892A CN201710199202.7A CN201710199202A CN106958892A CN 106958892 A CN106958892 A CN 106958892A CN 201710199202 A CN201710199202 A CN 201710199202A CN 106958892 A CN106958892 A CN 106958892A
- Authority
- CN
- China
- Prior art keywords
- capillary
- air
- valve port
- heat exchanger
- conditioner
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
-
- 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
-
- 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
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/04—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being spirally coiled
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of air-conditioner, including：Low back pressure compressor, low back pressure compressor includes housing and cylinder with oil sump, and housing has exhaust outlet and gas returning port, and cylinder is located in housing and with exhaust passage and air intake passage；Commutate component, and commutation component has the first valve port to the 4th valve port；Indoor heat exchanger, the first end of indoor heat exchanger is connected with the 3rd valve port；Outdoor heat exchanger, the first end of outdoor heat exchanger is connected with the second valve port, and capillary module is in series between the second end of outdoor heat exchanger and the second end of indoor heat exchanger；For the heat exchanging piece for the refrigerant that circulates, the two ends of heat exchanging piece are connected with exhaust outlet and exhaust passage respectively, and heat exchanging piece is at least partially immersed in the lubricating oil in oil sump.According to the air-conditioner of the present invention, it can ensure that the oil temperature for mixing lubricating oil in the refrigerant is not less than its pour point temperature to a certain extent, so as to avoid the capillary of capillary module blocked to a certain extent.
Description
Technical field
The present invention relates to technical field of heat exchange, more particularly, to a kind of air-conditioner.
Background technology
Air-conditioner particularly heat pump air conditioner using R290 as refrigerant by charging amount due to being limited, same ability
The whole machine of section is compared to the air-conditioning using other refrigerants, and charging amount is much smaller.In order to meet refrigerating capacity and efficiency requirement, this
Huge discharge compressor and the heat exchanger of large area must be used by planting air-conditioner.
When this air-conditioner uses capillary as throttling arrangement, when defrost terminates to change into heating mode, due to capillary
The pour point temperature of the lubricating oil of temperature for a long time less than R290 at pipe, lubricating oil can produce cotton-shaped stream, even hair is blocked when serious
Tubule, causes the failure of air-conditioner, the reliability reduction that air-conditioner is used.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes a kind of sky
Device is adjusted, the air-conditioner can avoid the capillary of capillary module to be blocked to a certain extent, and what raising air-conditioner was used can
By property, the fault rate of air-conditioner is reduced.
Air-conditioner according to embodiments of the present invention, the air-conditioner uses R290 as refrigerant, and the air-conditioner includes：
Low back pressure compressor, the low back pressure compressor includes housing and cylinder with oil sump, and the housing has exhaust outlet and returned
Gas port, the cylinder is located in the housing and has exhaust passage and air intake passage, the air intake passage and the gas returning port
It is connected；Commutate component, and the commutation component has the first valve port to the 4th valve port, first valve port and the second valve port and the 3rd
One of switching connection in valve port, the 4th valve port is cut with another in second valve port and the 3rd valve port
Connection is changed, first valve port is connected with the exhaust outlet, and the 4th valve port is connected with the gas returning port；Indoor heat exchanger,
The first end of the indoor heat exchanger is connected with the 3rd valve port；Outdoor heat exchanger, the first end of the outdoor heat exchanger with
Second valve port is connected, and capillary is in series between the second end of the outdoor heat exchanger and the second end of the indoor heat exchanger
Tube assembly；For the heat exchanging piece for the refrigerant that circulates, the two ends of the heat exchanging piece respectively with the exhaust outlet and the exhaust passage
It is connected, the heat exchanging piece is at least partially immersed in the lubricating oil in the oil sump.
Air-conditioner according to embodiments of the present invention, is heated by using the exhaust of cylinder to the lubricating oil in oil sump,
So as to improve the oil temperature of lubricating oil, so when air-conditioner defrost pattern terminates to change into heating mode, refrigerant is changed from interior
Hot device outflow and when flowing through the capillary of capillary module, can ensure to mix lubricating oil in the refrigerant to a certain extent
Oil temperature is not less than its pour point temperature, so as to avoid the capillary of capillary module blocked to a certain extent, reduces air-conditioning
The fault rate of device, improves the reliability that air-conditioner is used, and extends the service life of air-conditioner.
According to some embodiments of the present invention, the heat exchanging piece is heat exchanger tube.
Alternatively, the heat exchanger tube is coil pipe.
Alternatively, the heat exchanger tube is copper pipe.
According to some embodiments of the present invention, the commutation component is four-way valve.
According to some embodiments of the present invention, air-conditioner also includes reservoir, and the reservoir is connected on the gas returning port
Between the 4th valve port.
According to some embodiments of the present invention, the capillary module includes the first capillary, the second capillary and transition
Pipe, the first end of first capillary is connected with the second end of the indoor heat exchanger, the first end of second capillary
It is connected with the second end of the outdoor heat exchanger, the transition conduit is connected to the second end and described second of first capillary
Between second end of capillary, the internal diameter of the transition conduit is more than the internal diameter of first capillary and second capillary,
The length of first capillary is not less than the length of second capillary.
Specifically, the length of first capillary is more than the length of second capillary.
Specifically, the length of first capillary is L, and L is met：L≤700mm.
Specifically, the transition conduit is horizontally disposed with.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of air-conditioner according to some embodiments of the invention；
Fig. 2 is the schematic diagram of the air-conditioner according to other embodiments of the invention.
Reference：
Air-conditioner 100；
Low back pressure compressor 1；Housing 11；Exhaust outlet A；Gas returning port B；Oil sump 12；
Commutate component 2；First valve port C；Second valve port D；3rd valve port E；4th valve port F；
Indoor heat exchanger 3；Outdoor heat exchanger 4；Heat exchanging piece 5；
Capillary module 6；First capillary 61；Transition conduit 62；Second capillary 63.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " length ", " on ", " under ", "left", "right", " level ",
The orientation or position relationship of the instruction such as " top ", " bottom " " interior ", " outer ", " radial direction " are to be closed based on orientation shown in the drawings or position
System, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention,
It should be noted that unless otherwise clearly defined and limited, term " connected ", " connection " should be interpreted broadly, for example, can be with
It is to be fixedly connected or be detachably connected, or is integrally connected；Can be mechanical connection or electrical connection；Can be with
It is to be joined directly together, can also be indirectly connected to by intermediary, can is the connection of two element internals.For the general of this area
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Air-conditioner 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 2, air-conditioner 100 can use R290
As refrigerant, air-conditioner 100 can be used for adjusting indoor temperature, and such as air-conditioner 100 is used to indoor environment and heated
Or refrigeration.Alternatively, the air-conditioner 100 can be heat pump air conditioner, and such as air-conditioner 100 is heat pump convertible frequency air-conditioner.
As Figure 1-Figure 2, air-conditioner 100 according to embodiments of the present invention can include low back pressure compressor 1, commutation group
Part 2, indoor heat exchanger 3, outdoor heat exchanger 4 and heat exchanging piece 5.
Specifically, as Figure 1-Figure 2, low back pressure compressor 1 includes housing 11 and compression mechanism (not shown), compression
Mechanism includes base bearing, supplementary bearing, bent axle and cylinder etc., and compression mechanism is located in housing 1, has oil sump 12, oil in housing 11
There is lubricating oil, when compression mechanism works, lubricating oil can be lubricated to compression mechanism, so as to improve compression mechanism work in pond 12
The reliability of work.
Housing 11 has exhaust outlet A and gas returning port B, and cylinder has exhaust passage and air intake passage, air intake passage and return-air
Mouth B is connected, and the refrigerant after heat exchange can be returned in the cylinder of low back pressure compressor 1 from gas returning port B and air intake passage, refrigerant
The refrigerant of HTHP can be formed after being compressed in cylinder, and sequentially passes through exhaust passage and the low back pressure of exhaust outlet A discharges
Compressor 1.Here it is possible to understand, because lubricating oil to the work of compression mechanism plays a part of lubrication, such exhaust outlet
A small amount of lubricating oil is all inevitably mixed with the refrigerant of A discharges, therefore, this paper refrigerant refers to be mixed with a small quantity
The refrigerant of lubricating oil.
The component 2 that commutates has the first valve port C to the 4th valve port F, wherein, the first valve port C and the second valve port D and the 3rd valve port
One of switching connection in E, the 4th valve port F is connected with another switching in the second valve port D and the 3rd valve port E.Change speech
It, when the first valve port C is connected with the second valve port D, the 4th valve port F is connected with the 3rd valve port E, when the first valve port C and the 3rd valve
During mouth E connections, the 4th valve port F is connected with the second valve port D.
First valve port C is connected with exhaust outlet A, and the 4th valve port F is connected with gas returning port B, so that commutation component 2 is connected into sky
Adjust in the refrigerant loop of device 100 in order to the circulation of refrigerant.
Preferably, commutation component 2 is four-way valve, and when the component 2 that commutates is powered off, the first valve port C is connected with the second valve port D,
4th valve port F is connected with the 3rd valve port E, and when the component 2 that commutates is powered, the first valve port C is connected with the 3rd valve port E, the 4th valve port F
Connected with the second valve port D, the concrete structure and operation principle on four-way valve are by as it is known to those skilled in the art that herein not
Describe in detail again.But it is understood that, commutation component 2 may be formed as other elements, as long as with the first valve port C extremely
4th valve port F and commutation can be realized.
Because the first valve port C of the component 2 that commutates can be connected with one of commutation in the second valve port D and the 3rd valve port E,
4th valve port F is connected to realize commutation with another commutation in the second valve port D and the 3rd valve port E, and this make it that air-conditioner 100 can
To be changed between refrigeration mode and heating mode, it is achieved thereby that the refrigerating function and heat-production functions of air-conditioner 100.
The first end (for example, the left end shown in Fig. 1 and Fig. 2) of indoor heat exchanger 3 is connected with the 3rd valve port E, and outdoor is changed
The first end (for example, the left end shown in Fig. 1 and Fig. 2) of hot device 4 is connected with the second valve port D, the second end of outdoor heat exchanger 4
The second end (for example, the right-hand member shown in Fig. 1 and Fig. 2) of (for example, the right-hand member shown in Fig. 1 and Fig. 2) and indoor heat exchanger 3 it
Between be in series with capillary module 6, capillary module 6 can carry out reducing pressure by regulating flow to the refrigerant in refrigerant flow path.For example, such as
Shown in Fig. 1, capillary module 6 is a capillary.
The two ends of heat exchanging piece 5 are connected with exhaust outlet A and exhaust passage respectively, and heat exchanging piece 5 is at least partially immersed in oil sump 12
Lubricating oil in, thus, the refrigerant after cylinder compression can flow first to heat exchanging piece 5, refrigerant after being discharged from exhaust passage
Exchanged heat in heat exchanging piece 5 with the lubricating oil in oil sump 12 to heat lubricating oil, subsequent refrigerant discharges the low back of the body from exhaust outlet A
Press compressor 1.
Specifically, as depicted in figs. 1 and 2, when air-conditioner 100 is in refrigeration mode or defrost pattern, commutate component 2
The first valve port C connected with the second valve port D, the 3rd valve port E is connected with the 4th valve port F, the cylinder compression through low back pressure compressor 1
The refrigerant of HTHP afterwards can flow to heat exchanging piece 5, profit of the refrigerant in heat exchanging piece 5 and in oil sump 12 by exhaust passage
Lubricating oil is tentatively exchanged heat, and the refrigerant of the HTHP after heat exchange flows to commutation group after the outflow of heat exchanging piece 5 by exhaust outlet A
First valve port C of part 2, afterwards second valve port D of the refrigerant through the component 2 that commutates enter outdoor heat exchanger 4, and in outdoor heat exchange
Energy exchange is carried out with external environment in device 4, the refrigerant flow direction capillary module 6 after the outflow of outdoor heat exchanger 4, refrigerant
The liquid refrigerant of low-temp low-pressure is formed after the reducing pressure by regulating flow of capillary module 6, indoor heat exchanger 3 is entered afterwards with absorption chamber
Interior heat, reduces indoor environment temperature, and the refrigerant flowed out from indoor heat exchanger 3 passes through the 3rd valve port E and the 4th valve port
F, and the cylinder of low back pressure compressor 1 is returned to by the gas returning port B and air intake passage of low back pressure compressor 1, so as to form system
SAPMAC method, it is reciprocal with this.
As depicted in figs. 1 and 2, when air-conditioner 100 is in heating mode, the first valve port C and the 3rd valve of the component 2 that commutates
Mouth E is connected and the 4th valve port F is connected with the second valve port D, the refrigeration of the HTHP after the cylinder compression of low back pressure compressor 1
Agent flows to heat exchanging piece 5 by exhaust passage, and refrigerant is tentatively exchanged heat with the lubricating oil in oil sump 12 in heat exchanging piece 5, changed
The refrigerant of HTHP after heat is discharged from exhaust outlet A, then flows through the first valve port C and the 3rd valve port E enters interior and changed
Hot device 3, and exchanged heat indoors in heat exchanger 3 with indoor environment, the refrigerant after being exchanged heat with indoor heat exchanger 3 enters hair
Tubule component 6, forms the liquid refrigerant of low-temp low-pressure after the reducing pressure by regulating flow of capillary module 6 and enters outdoor heat exchanger 4,
Refrigerant exchanges heat in outdoor heat exchanger 4 with outdoor environment, and the cold-producing medium stream after being exchanged heat with outdoor heat exchanger 4 is through the second valve port D
With the 4th valve port F, and the cylinder of low back pressure compressor 1 is returned to by the gas returning port B and air intake passage of low back pressure compressor 1,
Reciprocal with this, form air-conditioner 100 heats circulation.
In summary, no matter which kind of operational mode air-conditioner 100 is in, the refrigerant of the exhaust passage discharge of cylinder is first
The refrigerant firstly flowed through in heat exchanging piece 5, such heat exchanging piece 5 can be heated to the lubricating oil in oil sump 12, so as to improve oil
The oil temperature of lubricating oil in pond 12, so when the defrost pattern of air-conditioner 100 terminates to change into heating mode, refrigerant is changed from interior
When hot device 3 flows out and flows through the capillary of capillary module 6, the lubricating oil that can ensure to mix in refrigerant to a certain extent
Oil temperature is not less than its pour point temperature, so as to avoid the capillary of capillary module 6 blocked to a certain extent, reduces air-conditioning
The fault rate of device 100, improves the reliability that air-conditioner 100 is used, and extends the service life of air-conditioner 100.
Air-conditioner 100 according to embodiments of the present invention, is carried out by using the exhaust of cylinder to the lubricating oil in oil sump 12
Heating, so that the oil temperature of lubricating oil is improved, so when the defrost pattern of air-conditioner 100 terminates to change into heating mode, refrigerant
When being flowed out from indoor heat exchanger 3 and flowing through the capillary of capillary module 6, mixing can be ensured to a certain extent in the refrigerant
The oil temperature of lubricating oil be not less than its pour point temperature, be blocked so as to the capillary that avoids capillary module 6 to a certain extent
Plug, reduces the fault rate of air-conditioner 100, improves the reliability that air-conditioner 100 is used, and extends the service life of air-conditioner 100.
In some embodiments of the invention, heat exchanging piece 5 is heat exchanger tube, such as heat exchanging piece 5 is coil pipe or flat tube.When
So, it is to be understood that heat exchanging piece 5 may be formed as other structures, and such as heat exchanging piece 5 is heat exchanger, as long as the energy of heat exchanging piece 5
Enough circulation refrigerant and the heat exchange between refrigerant and lubricating oil can be realized.
Preferably, heat exchanger tube is copper pipe, thus, the good heat conductivity of heat exchanger tube, and heat exchange efficiency is high.
According to some embodiments of the present invention, air-conditioner 100 also includes reservoir (not shown), and reservoir is connected on back
Between gas port B and the 4th valve port F.Thus, the refrigerant after heat exchange can flow to reservoir after the 4th valve port F outflows, and flow into
The liquid refrigerant in refrigerant in reservoir can be stored in reservoir, and gaseous refrigerant can be returned to by gas returning port B
Low back pressure compressor 1, this is not only easy to adjust the refrigerant flow in refrigerant flow path, is also prevented from low back pressure compressor 1
Produce liquid hit phenomenon.
In some embodiments of the invention, as shown in Fig. 2 capillary module 6 includes the first capillary 61, the second capillary
Pipe 63 and transition conduit 62, the first end (for example, the lower end shown in Fig. 2) of the first capillary 61 and the second of indoor heat exchanger 3
End is connected, and the first end (for example, the upper end shown in Fig. 2) of the second capillary 63 is connected with the second end of outdoor heat exchanger 4, mistake
Cross the second end (such as the upper end shown in Fig. 2) and the second end of the second capillary 63 that pipe 62 is connected to the first capillary 61
Between (for example, the lower end shown in Fig. 2), thus, when air-conditioner 100 is in refrigeration mode or defrost pattern, changed from outdoor
The refrigerant that hot device 4 flows out sequentially passes through the second capillary 63, the capillary 61 of transition conduit 62 and first and flows to indoor heat exchanger 3；
When air-conditioner 100 is in heating mode, the refrigerant flowed out from indoor heat exchanger 3 sequentially passes through the first capillary 61, transition
The capillary 63 of pipe 62 and second flows to outdoor heat exchanger 4.
Specifically, the internal diameter of transition conduit 62 is more than the internal diameter of the first capillary 61 and the second capillary 63, that is to say, that mistake
The internal diameter for crossing pipe 62 is more than the internal diameter of the second capillary 63 more than the internal diameter of the first capillary 61 and the internal diameter of transition conduit 62.Example
Such as, the first capillary 61 is identical with the internal diameter of the second capillary 63, and the internal diameter of transition conduit 62 is more than the first capillary 61 and the
The internal diameter of two capillaries 63.
The length of first capillary 61 is not less than the length of the second capillary 63.That is, the length of the second capillary 63
Degree is not more than the length of the first capillary 61.For example, the length of the first capillary 61 is more than the length of the second capillary 63.Again
Such as, the length of the first capillary 61 is equal to the length of the second capillary 63.
Specifically, temperature characterisitic of the refrigerant in capillary region is from capillary is entered to from capillary in refrigerant
During outflow, the temperature of refrigerant first in being basically unchanged, when circulation distance of the refrigerant in capillary reach it is specific
After distance, the temperature of refrigerant starts rapid reduction (i.e. steep drop).
Air-conditioner according to embodiments of the present invention, a capillary in correlation technique is replaced by using capillary module 6
Pipe, the length of the length of such capillary 63 of first capillary 61 and second than one capillary is small, so that in air-conditioning
When the defrost pattern of device 100 terminates to change into heating mode, refrigerant has during transition conduit 62 is flowed to from the first capillary 61
Advantageously ensure that refrigerant at it beneficial to temperature of the refrigerant in the first capillary 61 is ensured in the state being basically unchanged
Entered before temperature steep drop in transition conduit 62, so as to avoid to a certain extent because the temperature of the lubricating oil in refrigerant is low
Cotton-shaped stream is produced in the pour point temperature of lubricating oil.
Even so, even if the temperature of refrigerant steep drop in the first capillary 61 causes lubricating oil in refrigerant the
Cotton-shaped stream is generated in one capillary 61, because the internal diameter of transition conduit 62 is than the first capillary 61 and the internal diameter of the second capillary 63
Greatly, so that cotton-shaped stream also can relatively easily be flowed into transition conduit 62 and is temporarily stored within transition conduit 62, and due to transition conduit
(such as transition conduit 62 is non-capillary to the 62 effect very littles without the effect or reducing pressure by regulating flow that reducing pressure by regulating flow is carried out to refrigerant
Pipe), therefore temperature of the refrigerant in transition conduit 62 can be slightly increased, the lubricating oil so contributed in transition conduit 62 heats up,
So that the temperature of lubricating oil is higher than pour point temperature, then the refrigerant in transition conduit 62 is flowing to the second capillary from transition conduit 62
The risk that lubricating oil blocks the second capillary 63 is also reduced during pipe 63.
Further, because the length of the second capillary 63 is not more than the length of the first capillary 61, so as in not shadow
The length to shortening the second capillary 63 on the basis of refrigerant progress reducing pressure by regulating flow is rung, is so conducive to avoiding in refrigerant
Lubricating oil produces cotton-shaped stream in the second capillary 63, so as to further avoid the second capillary 63 from being blocked.
In brief, air-conditioner 100 according to embodiments of the present invention, by make it that capillary module 6 includes the first capillary
Pipe 61, the second capillary 63 and transition conduit 62, while so that the internal diameter of transition conduit 62 is more than the first capillary 61 and the second capillary
The internal diameter of pipe 63, and the length of the first capillary 61 is not less than the length of the second capillary 63, so in the defrost of air-conditioner 100
When pattern terminates to change into heating mode, refrigerant advantageously ensures that the oil temperature of lubricating oil is higher than after the outflow of indoor heat exchanger 3
Its pour point temperature, so as to avoid the first capillary 61 and the second capillary 63 from being blocked, reduces the fault rate of air-conditioner 100,
The reliability that air-conditioner 100 is used is improved, extends the service life of air-conditioner 100.
Preferably, the length of the first capillary 61 is more than the length of the second capillary 63.So as to further limit second mao
The length of tubule 63, shortens circulation distance of the refrigerant in the second capillary 63, further reduces in the defrost mould of air-conditioner 100
Lubricating oil when formula terminates to change into heating mode in refrigerant blocks the risk of the second capillary 63.
In order to further avoid the lubricating oil when the defrost pattern of air-conditioner 100 terminates to change into heating mode in refrigerant from blocking up
The first capillary 61 is filled in, the length L of the first capillary 61 can be defined to：L≤700mm.It is understood that when the first capillary
The length L of pipe 61 is met：During L≤700mm, the length of the second capillary 63 is again smaller than equal to 700mm and the second capillary 63
Length is not more than the length of the first capillary 61.For example, when the length of the first capillary 61 is 690mm, the second capillary 63
Length can be 650mm, 600mm or 620mm etc..And for example, when the length of the first capillary 61 is 650mm, the second capillary
63 length can be 550mm, 580mm or 630mm.So as to be conducive to further avoiding terminating in the defrost pattern of air-conditioner 100
Refrigerant produces the phenomenon of temperature steep drop in the first capillary 61 or the second capillary 63 when changing into heating mode, and then enters one
Step avoids lubricating oil from being formed as cotton-shaped stream.
In some further embodiments of the present invention, transition conduit 62 is horizontally disposed with.By make it that the level of transition conduit 62 is set
Put, can largely reduce velocity of liquid assets of the refrigerant in transition conduit 62, so as to extend refrigerant in transition conduit 62
Currency, be so conducive to further heating up for the lubricating oil in transition conduit 62, it is to avoid terminate in the defrost pattern of air-conditioner 100
Change into cotton-shaped stream during heating mode and block the second capillary 63.Certainly, the invention is not restricted to this, transition conduit 62 can also be tilted and set
Put, for example, the angle between the bearing of trend and horizontal plane of transition conduit 62 is α, α is met：0 ° of ＜ α≤90 °, for example, α be 15 °,
20 °, 30 °, 60 ° or 45 °.
According to some examples of the present invention, the internal diameter of transition conduit 62 is d1, the first capillary 61 and the second capillary 63
Internal diameter is that d2, d1 and d2 are met：D1 >=4mm, d2≤2.1mm.Thus, terminate to change into the defrost pattern of air-conditioner 100 and heat mould
During formula, be conducive to further avoiding producing cotton-shaped stream in the first capillary 61 and the second capillary 63, so as to further avoid
First capillary 61 and the second capillary 63 are blocked, and then further reduce the fault rate of air-conditioner 100, improve air-conditioner
100 reliabilities used, extend the service life of air-conditioner 100.
Alternatively, d1 >=5.5mm, d2≤2.0mm.Further, d1 >=6mm, d2≤1.5mm.More preferably, d1 >=6mm,
d2≤1.0mm。
Alternatively, the first capillary 61, the capillary 63 of transition conduit 62 and second are integrated part.It is thus, not only simple in construction,
The production technology to capillary module 6 can be simplified, production cost is reduced, but also capillary module 6 can be simplified in air-conditioning
Installation process in device 100.
Preferably, transition conduit 62 is copper pipe.Thus, be conducive to improving copper pipe and the heat exchange efficiency of surrounding environment, so as to enter
The oil temperature of lubricating oil at one step reduction transition conduit 62 is less than the risk of pour point temperature.
In the description of this specification, the description meaning of reference term " some embodiments ", " example " or " some examples " etc.
Refer at least one reality that the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example are described
Apply in example or example.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode is combined.In addition, in the case of not conflicting, those skilled in the art can be by described in this specification
Not be the same as Example or the feature of example and non-be the same as Example or example be combined and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of air-conditioner, the air-conditioner uses R290 as refrigerant, it is characterised in that the air-conditioner includes：
Low back pressure compressor, the low back pressure compressor includes housing and cylinder with oil sump, and the housing has exhaust outlet
And gas returning port, the cylinder is located in the housing and with exhaust passage and air intake passage, the air intake passage with described time
Gas port is connected；
Commutate component, and the commutation component has the first valve port to the 4th valve port, first valve port and the second valve port and the 3rd
One of switching connection in valve port, the 4th valve port is cut with another in second valve port and the 3rd valve port
Connection is changed, first valve port is connected with the exhaust outlet, and the 4th valve port is connected with the gas returning port；
Indoor heat exchanger, the first end of the indoor heat exchanger is connected with the 3rd valve port；
Outdoor heat exchanger, the first end of the outdoor heat exchanger is connected with second valve port, and the second of the outdoor heat exchanger
Capillary module is in series between end and the second end of the indoor heat exchanger；
For the heat exchanging piece for the refrigerant that circulates, the two ends of the heat exchanging piece respectively with the exhaust outlet and the exhaust passage phase
Even, the heat exchanging piece is at least partially immersed in the lubricating oil in the oil sump.
2. air-conditioner according to claim 1, it is characterised in that the heat exchanging piece is heat exchanger tube.
3. air-conditioner according to claim 2, it is characterised in that the heat exchanger tube is coil pipe.
4. air-conditioner according to claim 2, it is characterised in that the heat exchanger tube is copper pipe.
5. air-conditioner according to claim 1, it is characterised in that the commutation component is four-way valve.
6. air-conditioner according to claim 1, it is characterised in that also including reservoir, the reservoir is connected on described
Between gas returning port and the 4th valve port.
7. air-conditioner according to claim 1, it is characterised in that the capillary module includes the first capillary, second
Capillary and transition conduit, the first end of first capillary are connected with the second end of the indoor heat exchanger, described second mao
The first end of tubule is connected with the second end of the outdoor heat exchanger, and the transition conduit is connected to the second of first capillary
Between end and the second end of second capillary, the internal diameter of the transition conduit is more than first capillary and described second mao
The internal diameter of tubule, the length of first capillary is not less than the length of second capillary.
8. air-conditioner according to claim 7, it is characterised in that the length of first capillary is more than described second mao
The length of tubule.
9. air-conditioner according to claim 7, it is characterised in that the length of first capillary is L, L is met：L≤
700mm。
10. air-conditioner according to claim 7, it is characterised in that the transition conduit is horizontally disposed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199202.7A CN106958892B (en) | 2017-03-29 | 2017-03-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710199202.7A CN106958892B (en) | 2017-03-29 | 2017-03-29 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958892A true CN106958892A (en) | 2017-07-18 |
| CN106958892B CN106958892B (en) | 2020-05-05 |
Family
ID=59470666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710199202.7A Active CN106958892B (en) | 2017-03-29 | 2017-03-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958892B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018176283A1 (en) * | 2017-03-29 | 2018-10-04 | 广东美的制冷设备有限公司 | Air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081506U (en) * | 1990-07-30 | 1991-07-24 | 顾雏军 | Multistep expanding module for refrigeration and air conditioner |
| JPH09138032A (en) * | 1995-11-16 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Refrigeration cycle |
| CN1158971A (en) * | 1995-12-11 | 1997-09-10 | 松下电器产业株式会社 | Refrigerating circulation |
| CN102313326A (en) * | 2010-06-30 | 2012-01-11 | 陈则韶 | Simple, high-efficiency and reliable cold-warm air-conditioning water heater |
| US20120255323A1 (en) * | 2011-04-07 | 2012-10-11 | Juhyok Kim | Air conditioner |
| CN202581983U (en) * | 2012-03-21 | 2012-12-05 | 宁波奥克斯电气有限公司 | Device for controlling oil temperature of compressor |
| CN203962416U (en) * | 2014-06-11 | 2014-11-26 | 珠海凌达压缩机有限公司 | Rotary compressor |
| CN205717533U (en) * | 2016-04-20 | 2016-11-23 | 广东美芝制冷设备有限公司 | Air-conditioner |
-
2017
- 2017-03-29 CN CN201710199202.7A patent/CN106958892B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081506U (en) * | 1990-07-30 | 1991-07-24 | 顾雏军 | Multistep expanding module for refrigeration and air conditioner |
| JPH09138032A (en) * | 1995-11-16 | 1997-05-27 | Matsushita Electric Ind Co Ltd | Refrigeration cycle |
| CN1158971A (en) * | 1995-12-11 | 1997-09-10 | 松下电器产业株式会社 | Refrigerating circulation |
| CN102313326A (en) * | 2010-06-30 | 2012-01-11 | 陈则韶 | Simple, high-efficiency and reliable cold-warm air-conditioning water heater |
| US20120255323A1 (en) * | 2011-04-07 | 2012-10-11 | Juhyok Kim | Air conditioner |
| CN202581983U (en) * | 2012-03-21 | 2012-12-05 | 宁波奥克斯电气有限公司 | Device for controlling oil temperature of compressor |
| CN203962416U (en) * | 2014-06-11 | 2014-11-26 | 珠海凌达压缩机有限公司 | Rotary compressor |
| CN205717533U (en) * | 2016-04-20 | 2016-11-23 | 广东美芝制冷设备有限公司 | Air-conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018176283A1 (en) * | 2017-03-29 | 2018-10-04 | 广东美的制冷设备有限公司 | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106958892B (en) | 2020-05-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102538273B (en) | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner | |
| CN105091395A (en) | Cooling and heating type air-conditioner system and single-cooling type air-conditioner system | |
| CN205351844U (en) | Changes in temperature type air conditioning system and single cold mould air conditioning system | |
| CN104976813A (en) | Air conditioner | |
| US20150089971A1 (en) | Air conditioner | |
| CN2879058Y (en) | New hot pump air conditioning system with air-filling circuit | |
| CN207335011U (en) | Air-conditioning system | |
| CN206739672U (en) | Air conditioner | |
| CN202432744U (en) | Air-supply enthalpy-adding air conditioning system and air conditioner | |
| CN106918162A (en) | Air-conditioner | |
| CN101625176B (en) | Quasi-tertiary compressed air source hot pump system | |
| CN105588365B (en) | A kind of heat-flash type outdoor unit, heat pump system and its control method | |
| CN106958892A (en) | Air-conditioner | |
| CN205174909U (en) | Air conditioning system | |
| CN104422208B (en) | Air conditioning system | |
| JP2009024939A (en) | Refrigerant tank and heat pump system | |
| CN108844256A (en) | Compressor and air conditioning system | |
| CN108413663A (en) | Knockout and air conditioner | |
| CN205174908U (en) | Air conditioning system | |
| CN205227953U (en) | Vapour and liquid separator and have its refrigerating cycle device, refrigerating system | |
| CN107036209A (en) | Air conditioner | |
| CN207702631U (en) | Air conditioner cooling cycle system and air conditioner | |
| CN105402920A (en) | Water chilling unit | |
| CN206310607U (en) | A kind of control system and air-conditioner for improving air-conditioning heating effect | |
| CN113932473A (en) | Multi-machine parallel low-temperature heat pump defrosting device, defrosting method and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |