CN208635364U - A kind of oil return system and air-conditioner set - Google Patents

Abstract

The utility model provides a kind of oil return system and air-conditioner set, for solving the problems, such as how the refrigeration oil in cooling cycle system more effectively returns to compressor, the system comprises compressors, condenser, evaporator and injector, the injector includes high-voltage end, low-pressure end and negative pressure region end, the high-voltage end is connect with the condenser outlet side, the low-pressure end is connect with first suction end of compressor, the negative pressure region end is connect with the evaporator outlet end, the injector, for generating vacuum force, oil in evaporator is drawn into the first suction end of compressor.

Description

A kind of oil return system and air-conditioner set

Technical field

The utility model relates to technical field of refrigeration equipment, in particular to a kind of oil return system and air-conditioner set.

Background technique

For the refrigeration oil of full-liquid type unit after oil eliminator, there are also partial freeze oil can be with gaseous coolant by band at present Enter in refrigeration system, since refrigeration oil is dissolved completely in liquid refrigerants, oil return is difficult, it is necessary to effective oil return measure is taken, Just the refrigeration oil of compressor can be made to be replenished in time, otherwise run more than certain time, just will appear oil level protection and shut down, shadow Ring unit normal use.Booting needs in addition supplement refrigeration oil again, so recycles, and will lead to freezing oil content mistake in evaporator Height seriously affects evaporator heat exchange, influences the efficiency of unit.

Existing oil return system oil eliminator effect is poor, causes fluorine system system oil content excessive, oil return system design does not conform to It manages, the refrigeration oil in fluorine system system cannot return to compressor in time, and with the accumulation of runing time, compressor meeting oil starvation leads to oil Position alarm and can not normal boot-strap.

Utility model content

In view of this, being followed the purpose of this utility model is to provide a kind of oil return system and air-conditioner set with solving refrigeration The problem of how refrigeration oil in loop system more effectively returns to compressor.

In order to solve the above-mentioned technical problem, the utility model provides following technical scheme:

First aspect: the utility model provides a kind of oil return system, and the system comprises compressor, condenser, evaporations Device and injector, the injector include high-voltage end, low-pressure end and negative pressure region end, the high-voltage end and the condenser Outlet side connection, the low-pressure end are connect with first suction end of compressor, and the negative pressure region end goes out with the evaporator Oil in evaporator is drawn into the first suction end of compressor for generating vacuum force by the connection of liquid end, the injector.

The oil return system of above scheme design, injector utilize vacuum force, refrigeration oil are drawn into compressor first Suction end realizes effective oil return of refrigeration oil, realizes the oil balance of entire oil return system, increases the reliability of system, extend The service life of compressor.

In the optional embodiment of first aspect, oil eliminator is set, the oil eliminator goes out inside the condenser Hydraulic fluid port is connect with solenoid valve first end, and the solenoid valve second end is connect with second suction end of compressor.

The oil return system of above scheme design, system further includes oil eliminator, is drawn so that the oil return of refrigeration oil not only passes through One pipeline of emitter is realized, is worked along both lines, is improved the efficiency of oil return, oil return is prevented slowly to lack, lead to compressor therefore Barrier.

In the optional embodiment of first aspect, the oil outlet includes the first oil outlet and the second oil outlet, described First oil outlet is connect with the solenoid valve first end, and second oil outlet is connect with the first end of the solenoid valve.

The oil return system of above scheme design, oil eliminator includes two oil outlets, so that the oil yield efficiency of oil eliminator It improves, the oil return speed of system is faster.

In the optional embodiment of first aspect, the solenoid valve is normally opened structure.

The oil return system of above scheme design, normally opened structure make solenoid valve be to open in cold situation, need It just needs to be powered when closing, so that system control is more easier, and can economize on resources.

In the optional embodiment of first aspect, the solenoid valve is check valve.

The oil return system of above scheme design, check valve prevent the path of oil return can only from oil eliminator to compressor Non-return stream causes oil return low efficiency etc. to influence.

In the optional embodiment of first aspect, the electromagnetic valve work voltage is alternating voltage 190V~240V.

In the optional embodiment of first aspect, the electromagnetic valve work voltage is alternating voltage 220V or 240V.

The oil return system of above scheme design, electromagnetic valve work is in voltage rating fluctuation range, so that the work of solenoid valve Make more efficient.

It is described the system also includes first filter and the second filter in the optional embodiment of first aspect First filter one end is connect with the oil eliminator oil outlet, and the first filter other end is connect with the solenoid valve； Second filter one end is connect with the evaporator outlet end, and the second filter other end is negative with the injector The connection of intermediate pressure section end.

The oil return system of above scheme design, the increase of filter can effectively prevent injector and oil eliminator to go out Hydraulic fluid port occurs dirty stifled.

In the optional embodiment of first aspect, the system also includes multiple shut-off valves, the multiple shut-off valve point Be not set to first suction end of compressor, the second suction end of compressor, evaporator outlet end, oil eliminator oil outlet and Condenser outlet side.

The oil return system of above scheme design, shut-off valve are that oil pipe occurs to mention when dirty stifled or filter failure needs to overhaul For route guarantee.

Second aspect: the application also provides a kind of air-conditioner set, and the air-conditioner set includes wanting any in device 1-9 such as right Oil return system described in.

Its all feature for including with oil return system of the air-conditioner set of above scheme design.

The utility model provides a kind of oil return system and air-conditioner set, has following the utility model has the advantages that the utility model is logical Injector is crossed using vacuum force, refrigeration oil is drawn into the first suction end of compressor, realizes effective oil return of refrigeration oil, The oil balance for realizing entire oil return system, increases the reliability of system, extends the service life of compressor.

Detailed description of the invention

It, below will be to required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts, It can also be obtained according to these attached drawings other relevant attached drawings.

Fig. 1 is the first schematic diagram of oil return system provided by the embodiment of the utility model；

Fig. 2 is the second schematic diagram of oil return system provided by the embodiment of the utility model；

Fig. 3 is the third schematic diagram of oil return system provided by the embodiment of the utility model.

Icon: 10- compressor；The first suction end of 101- compressor；The second suction end of 102- compressor；20- condenser； 201- condenser outlet side；202- oil eliminator；2021- oil outlet；30- evaporator；301- evaporator outlet end；40- injection Device；50- solenoid valve；60- first filter；The second filter of 70-.

Specific embodiment

It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model Selected embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative labor Every other embodiment obtained under the premise of dynamic, fall within the protection scope of the utility model.

In the description of the present invention, it should be understood that term " center ", " length ", " width ", " thickness ", The orientation or positional relationship of the instructions such as "upper", "lower", "front", "rear", "left", "right", "inner", "outside" is based on the figure Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified sets Standby or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.

In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important Property or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can be expressed Or implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or Two or more, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be It is connected directly, the mutual of connection inside two elements or two elements can also be can be indirectly connected through an intermediary Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is practical new at this as the case may be Concrete meaning in type.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.

First embodiment

As shown in Figure 1, present embodiments provide a kind of oil return system, including compressor 10, condenser 20, evaporator 30, And injector 40, injector 40 include high-voltage end, low-pressure end and negative pressure region end, high-voltage end and condenser outlet side 201 Connection, low-pressure end are connect with the first suction end of compressor 101, and negative pressure region end is connect with evaporator outlet end 301, injector 40 For generating vacuum force, the oil of evaporator 30 is drawn into the first suction end of compressor 101.

Specifically, the oil return system of above scheme design, condenser outlet side 201 generates high speed, high pressure gas by pipe Road flows through the injector 40 being attached thereto, and will form a negative pressure region inside injector 40, negative pressure region end by pipeline with Evaporator outlet end 301 connects, using the vacuum force in negative pressure region, by the refrigeration oil and refrigerant mixing in evaporator 30 Object is drawn into the first suction end of compressor 101, finally flows back in compressor 10.

The oil return system of above scheme design, injector utilize vacuum force, refrigeration oil are drawn into compressor first Suction end 101 prevents refrigeration oil from cannot return to compressor in time, lead to compressor oil starvation and warning and can not be just normally opened Machine realizes effective oil return of refrigeration oil, ensure that the oil balance of entire oil return system, increases the reliability of system, extend pressure The service life of contracting machine.

In the alternative embodiment of the utility model, the system also includes solenoid valve 50, oil is set inside condenser 20 Separator 202, oil eliminator 202 include oil outlet 2021, and oil outlet 2021 is connect with 50 first end of solenoid valve, the solenoid valve 50 second ends are connect with second suction end of compressor 102.

Optionally, the oil return system of above scheme design, as shown in Fig. 2, when oil eliminator 202 is filter type oil separator When, after the higher pressure refrigerant gas that compressor 10 is discharged enters oil eliminator 202, since overflow section is larger, gas flow rate is prominent So reduce and change direction, and when air inlet several layers of wire meshes filtration, by the refrigeration oil in entrained gas refrigerant It separates, and lower drippage is gathered in container bottom, flows to solenoid valve 50 by oil outlet 2021, by solenoid valve 50, returns to The second suction end of compressor 102, is finally flowed back in compressor 10.

Above-mentioned filter type oil separator has structure simple, easily manufactured, using the advantages that universal, at low cost.

Optionally, the oil return system of above scheme design, when oil eliminator 202 is centrifugal oil separator, compressor 10 Exhaust enter in cylinder through oil eliminator air inlet pipe tangential direction, flow immediately along spiral guide blade high speed rotation and from top to bottom It is dynamic.Effect by means of centrifugal force separates the biggish oil droplet throwing of density in exhaust on barrel, flows down along wall, is deposited on a bottom Portion flows to solenoid valve 50 by oil outlet 2021, by solenoid valve 50, returns to the second suction end of compressor 102, finally flows back to pressure In contracting machine 10.

The oil return system of above scheme design, makes the oil return of refrigeration oil not only pass through injector by oil eliminator 202 A pipeline realize that realization is worked along both lines, improve the efficiency of oil return, oil return is prevented slowly to lack, lead to compressor therefore Barrier.

In the alternative embodiment of the utility model, as shown in Fig. 2, oil outlet 2021 includes that the first oil outlet goes out with second Hydraulic fluid port, the first oil outlet are connect with 50 first end of solenoid valve, and the second oil outlet is connect with the first end of solenoid valve 50.

The oil return system of above scheme design, oil outlet 2021 are set as two, are on the one hand to so that oil outlet 2021 oil yield efficiency is higher, and speed is faster；On the other hand, the first oil outlet and the second oil outlet is respectively set in oil eliminator 202 both ends so that oil eliminator 202 will not slow down fuel-displaced speed while expanding oil eliminator area, thus make be The oil return of system is more efficient, improves the stability of system.

In the alternative embodiment of the utility model, solenoid valve 50 is normally opened structure.

The oil return system of above scheme design, has closed chamber in solenoid valve 50, is provided with through-hole, Mei Gekong in different location Different oil pipes is connected, is piston among chamber, two sides is two blocks of electromagnet, and the magnet coil energization valve body in which face will be attracted To which side, open or close different outages by the movement of application valve body, and fuel feed hole be it is normally opened, hydraulic oil will Into different oil exit pipes, the piston of oil cylinder is then pushed by the pressure of oil, piston drives piston rod again, and piston rod drives Mechanical device controls opening and closing in this way.

Specifically, normally opened structure makes solenoid valve 50 be to open in cold situation, the oil inside pipeline can be with Solenoid valve arbitrarily is flowed through, is powered when needing to close, so that pipeline is closed, carries out the operation such as overhauling, so that system control System is more easier, and can economize on resources.

Optionally, solenoid valve 50 is check valve, and check valve prevent the path of oil return can only from oil eliminator to compressor Non-return stream causes oil return low efficiency etc. to influence.

In the alternative embodiment of the utility model, 50 operating voltage of solenoid valve is alternating voltage 190V~240V.

The oil return system of above scheme design, solenoid valve 50 works in voltage rating fluctuation range, so that solenoid valve 50 Working efficiency not will receive the influence of extraneous factor, it is also more convenient, this is because if not in nominal working range, just It needs to take pressure stabilizing measure.

Specifically, 50 operating voltage of solenoid valve is 220V or 240V.

The oil return system of above scheme design, the work of solenoid valve 50 is in 220V, so that the stability that solenoid valve 50 works is good, The magnetic force that coil generates is stronger.

In the alternative embodiment of the utility model, as shown in figure 3, the system also includes first filter 60 and second Filter 70,60 one end of first filter are connect with oil outlet 2021, and 60 other end of first filter is connect with solenoid valve 50；The 70 one end of tow filtrator is connect with evaporator outlet end 301, the negative pressure region end 403 of 70 other end of the second filter and injector Connection.

The oil return system of above scheme design, the oil return line caliber in system is smaller, and the gas flowed through can be small in caliber Oil return pipe in leave sundries, cause oil return line dirty stifled, sundries be filtered so increasing filter, so two mistakes Filter is arranged in most important two places, and the negative pressure region end 403 of injector is arranged in first filter 60, if sent out here Congestion is given birth to, the negative pressure region of injector can not be formed, and vacuum force can not be generated, so that refrigeration oil can not suck compressor First suction end 101；The oil outlet 2021 of oil eliminator is arranged in second filter 70, if the oil outlet of oil eliminator 202 Occur dirty stifled, so that the isolated refrigeration oil of oil eliminator 202 can not be excluded, causes the refrigeration oil in condenser 20 that can not return To the second suction end 102 of compressor.

The oil return system of above scheme design, the setting of filter is so that the sundries in pipeline will not cause shadow to oil return It rings, causes oil return inefficient, or even be unable to oil return, system unit all parts is caused to be paralysed, or even damage, cause serious Economic loss.

In the alternative embodiment of the utility model, as shown in figure 3, the system also includes multiple shut-off valves, multiple sections Only it is fuel-displaced to be respectively arranged at first suction end of compressor, the second suction end of compressor, evaporator outlet end, oil eliminator for valve Mouth and condenser outlet side.

The oil return system of above scheme design, the setting of multiple shut-off valves, so that when system jam, system equipment are sent out When raw failure and pipeline occur dirty stifled, overhauls for convenience, be provided with multiple shut-off valves, multiple shut-off valves at pipeline both ends Setting, when so that the solenoid valve, filter, injector etc. in pipeline breaking down, can be truncated in time refrigeration oil process, it is right Faulty equipment carries out service work.The setting of multiple shut-off valves is being examined so that oil return system more has stability and serious forgiveness It operates simpler when repairing, reduces the workload of staff.

The application still further provides a kind of air-conditioner set, and air-conditioner set contains whole skills of oil return system in embodiment Art feature.

Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of oil return system, which is characterized in that described the system comprises compressor, condenser, evaporator and injector Injector includes high-voltage end, low-pressure end and negative pressure region end, and the high-voltage end is connect with the condenser outlet side, described low Pressure side is connect with first suction end of compressor, and the negative pressure region end is connect with the evaporator outlet end, the injection Oil in evaporator is drawn into the first suction end of compressor for generating vacuum force by device.

2. oil return system according to claim 1, which is characterized in that the system also includes solenoid valve, in the condenser Oil eliminator is arranged in portion, and the oil eliminator includes oil outlet, and the oil outlet is connect with the solenoid valve first end, the electricity Magnet valve second end is connect with second suction end of compressor.

3. oil return system according to claim 2, which is characterized in that the oil outlet includes that the first oil outlet and second are fuel-displaced Mouthful, first oil outlet is connect with the solenoid valve first end, and the first end of second oil outlet and the solenoid valve connects It connects.

4. oil return system according to claim 2, which is characterized in that the solenoid valve is normally opened structure.

5. oil return system according to claim 4, which is characterized in that the solenoid valve is check valve.

6. oil return system according to claim 5, which is characterized in that the electromagnetic valve work voltage be alternating voltage 190V~ 240V。

7. oil return system according to claim 6, which is characterized in that the electromagnetic valve work voltage be alternating voltage 220V or 240V。

8. oil return system according to claim 2, which is characterized in that the system also includes first filters and the second filtering Device, described first filter one end are connect with the oil eliminator oil outlet, the first filter other end and the electromagnetism Valve connection；Second filter one end is connect with the evaporator outlet end, and the second filter other end draws with described The negative pressure region end of emitter connects.

9. oil return system according to claim 8, which is characterized in that the multiple the system also includes multiple shut-off valves Shut-off valve is respectively arranged at first suction end of compressor, the second suction end of compressor, evaporator outlet end, oil eliminator and goes out Hydraulic fluid port and condenser outlet side.

10. a kind of air-conditioner set characterized by comprising oil return system as claimed in any one of claims 1-9 wherein.