CN206695426U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN206695426U CN206695426U CN201720460346.9U CN201720460346U CN206695426U CN 206695426 U CN206695426 U CN 206695426U CN 201720460346 U CN201720460346 U CN 201720460346U CN 206695426 U CN206695426 U CN 206695426U
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- air
- conditioning system
- valve body
- heat exchanger
- throttling arrangement
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Abstract
The utility model discloses a kind of air-conditioning system, including compressor, first valve body, second valve body and the indoor heat exchanger and outdoor heat exchanger of interconnection, compressor has an oil sump, heat exchange coil is provided with oil sump, heat exchange coil has inlet and outlet, first valve body respectively with the second valve body, the outlet, outdoor heat exchanger, the gas returning port of compressor, indoor heat exchanger connects, the second valve body exhaust outlet with compressor respectively, outlet and import connection, air-conditioning system also includes controller, controller is used for when air-conditioning system is completed to defrost, adjust the switching direction of the first valve body and the second valve body, make the refrigerant of high temperature flow out into heat exchange coil from exhaust outlet to be exchanged heat, to be heated to the lubricating oil in oil sump.The utility model can prevent from using capillary etc. the stifled phenomenon of oil occur as the air-conditioning system of throttling arrangement when air-conditioning system is using refrigerant such as R290 operation defrosting modes.
Description
Technical field
Air-conditioning technical field is the utility model is related to, more particularly to a kind of air-conditioning system.
Background technology
The existing pump type heat convertible frequency air-conditioner using refrigerant such as R290, because the charging amount by the refrigerant is limited, together
The air-conditioning of sample ability section relative to using other refrigerants air-conditioning, its charging amount is much smaller, at the same for meet refrigerating capacity and
Efficiency requirement, it is necessary to use huge discharge compressor and the heat exchanger of large area.This allow for refrigerant such as R290 charging amounts by
The pump type heat convertible frequency air-conditioner of limitation, if heating defrost terminates, can make hair when using the structures such as capillary as throttling arrangement
Temperature at tubule is less than the pour point temperature of R290 lubricating oil for a long time, so that lubricating oil separates out flocculent substance and blocks capillary
Pipe, causes refrigerant not continue cycling through and circulates, in turn result in machine failure.
Utility model content
Main purpose of the present utility model is to provide a kind of air-conditioning system, it is intended to which air-conditioning system is transported using refrigerant such as R290
During row defrosting mode, prevent from using capillary etc. the stifled phenomenon of oil occur as the air-conditioning system of throttling arrangement.
To achieve the above object, the utility model proposes a kind of air-conditioning system, including compressor, the first valve body, second
Valve body and the indoor heat exchanger and outdoor heat exchanger of interconnection, the compressor have an oil sump, are provided with the oil sump
Heat exchange coil, the heat exchange coil have inlet and outlet,
First valve body respectively with second valve body, the outlet, the outdoor heat exchanger, the compressor return
Gas port, indoor heat exchanger connection,
The exhaust outlet with the compressor, outlet and import are connected second valve body respectively,
The air-conditioning system also includes controller, and the controller is used for when air-conditioning system is completed to defrost, described in adjustment
The switching direction of first valve body and the second valve body, the refrigerant of high temperature is set to flow out into the heat exchange coil from the exhaust outlet
Exchanged heat, to be heated to the lubricating oil in the oil sump.
Preferably, first valve body is four-way valve, and second valve body is triple valve.
Preferably, the air-conditioning system also includes one end and the outlet, the other end respectively with first valve body, second
First check valve of valve body connection.
Preferably, first check valve is used to guiding the refrigerant that is flowed out out of described heat exchange coil from the outlet,
First valve body is flowed to through first check valve.
Preferably, the air-conditioning system is also connected including one end with the indoor heat exchanger, and the other end changes with the outdoor
The main throttling arrangement of hot device connection.
Preferably, it is unidirectional to be provided with second between the indoor heat exchanger and the main throttling arrangement for the air-conditioning system
Valve.
Preferably, second check valve is used to guide the refrigerant from outdoor heat exchanger outflow successively through the master
Throttling arrangement, the second check valve flow to the indoor heat exchanger.
Preferably, the air-conditioning system is also connected including one end with the main throttling arrangement, and the other end is respectively with described
Two check valves and the auxiliary throttling arrangement of indoor heat exchanger connection.
Preferably, the main throttling arrangement and auxiliary throttling arrangement are capillary pipe structure.
Preferably, the refrigerant is R290.
Air-conditioning system provided by the utility model, by setting compressor, the first valve body, the second valve body and interconnection
Indoor heat exchanger and outdoor heat exchanger, wherein, the compressor has an oil sump, is provided with import and goes out in the oil sump
Mouthful heat exchange coil, first valve body respectively with second valve body, the outlet, the outdoor heat exchanger, the compression
The gas returning port of machine, the indoor heat exchanger connection, second valve body respectively the exhaust outlet with the compressor, export and enter
Mouthful connection, the air-conditioning system also include controller, and the controller is used for when air-conditioning system is completed to defrost, and adjust described the
The switching direction of one valve body and the second valve body, the refrigerant of high temperature is flowed out into the heat exchange coil from the exhaust outlet and enter
Row heat exchange, to be heated to the lubricating oil in the oil sump.In this way, air-conditioning system can be made in the system being limited using charging amount
During cryogen such as R290 types operation defrosting mode, prevent that using the structures such as capillary oil occur as the air-conditioning system of throttling arrangement blocks up
Phenomenon.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the utility model air-conditioning system one；
Fig. 2 is the schematic flow sheet for the embodiment that the utility model air-conditioning system performs control method.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 1 | Compressor | 7 | Heat exchange coil |
| 2 | First valve body | 8 | Main throttling arrangement |
| 3 | Second valve body | 9 | Auxiliary throttling arrangement |
| 4 | Indoor heat exchanger | 10 | First check valve |
| 5 | Outdoor heat exchanger | 11 | Second check valve |
| 6 | Oil sump |
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
If it is to be appreciated that be related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then it is only used for explaining relative position relation under a certain particular pose (as shown in drawings) between each part, fortune
Emotionally condition etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If in addition, being related to the description of " first ", " second " etc. in the utility model, it is only used for describing purpose, and
It is not intended that indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, limit
There is " first ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, between each embodiment
Technical scheme can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, work as technical side
It will be understood that the combination of this technical scheme is not present when the combination appearance of case is conflicting or can not realize, also not in this practicality
Within the protection domain of new requirement.
It refer to Fig. 1, air-conditioning system 100 provided by the utility model, in one embodiment, including：Compressor 1,
One valve body 2, the second valve body 3 and the indoor heat exchanger 4 and outdoor heat exchanger 5 interconnected.Wherein, the compressor 1 has
One accommodates the oil sump 6 of lubricating oil, is provided with import A and exports B heat exchange coil 7 in the oil sump.First valve body 2 divides
Not with second valve body 3, the outlet B, the outdoor heat exchanger 5, the gas returning port C of the compressor 1, the indoor heat exchange
Device 4 is connected, and the exhaust outlet D with the compressor 1, outlet B and import A are connected second valve body 3 respectively.Preferably, institute
It is four-way valve to state the first valve body 2, and second valve body 3 is triple valve.It is understood that the air-conditioning system 100 is applied to
Pump type heat convertible frequency air-conditioner.
Further, the air-conditioning system 100 is also connected including one end with the indoor heat exchanger 4, the other end with it is described
The main throttling arrangement 8 that outdoor heat exchanger 5 connects；One end is connected with the main throttling arrangement 8, and the other end is single with described second respectively
The auxiliary throttling arrangement 9 connected to valve 11 and the indoor heat exchanger 4.The auxiliary throttling arrangement 9 runs in air-conditioning system 100 and made
During heat pattern, throttling action can be just played, and when running refrigeration mode and is not involved in throttling, therefore, in such a mode not
Has throttling action.Preferably, the main throttling arrangement 8 and auxiliary throttling arrangement 9 are capillary pipe structure.Certainly, in other embodiment
In, the main throttling arrangement 8 and auxiliary throttling arrangement 9 can be other structures, with specific reference to being actually needed reasonable setting.
The air-conditioning system 100 also includes controller (not shown), and the controller is used for complete in air-conditioning system 100
Into during defrosting, the switching direction of the valve body 3 of the first valve body 2 and second is adjusted, the refrigerant of high temperature is flowed from the exhaust outlet D
Go out and enter the heat exchange coil 7 to be exchanged heat, to heat the lubricating oil in the oil sump.Wherein, the utility model
In refrigerant mainly for R290 type refrigerants, the utility model is by using the high-temperature exhaust air of compressor 1 by compressor 1
Lubricating oil in oil sump is preheated, so that air-conditioning system 100, under any working condition, the temperature of lubricating oil will not
Less than its pour point temperature, so as to prevent oil is stifled from occurring.
Air-conditioning system 100 provided by the utility model, by set compressor 1, the first valve body 2, the second valve body 3 and mutually
The indoor heat exchanger 4 and outdoor heat exchanger 5 being connected, wherein, the compressor 1 has an oil sump, and tool is provided with the oil sump
Have import A and export B heat exchange coil 7, first valve body 2 respectively with second valve body 3, the outlet B, the outdoor
Heat exchanger 5, the gas returning port C of the compressor 1, the indoor heat exchanger 4 connect, second valve body 3 respectively with the compression
Exhaust outlet D, outlet B and the import A connections of machine 1, the air-conditioning system 100 also include controller, and the controller is used for
When air-conditioning system 100 completes defrosting, adjust the switching direction of the valve body 3 of the first valve body 2 and second, make the refrigerant of high temperature from
The exhaust outlet D flows out into the heat exchange coil 7 and exchanged heat, to be heated to the lubricating oil in the oil sump.Such as
This, can make air-conditioning system 100 prevent from using hair in the refrigerant being limited using charging amount such as R290 types operation defrosting mode
There is the stifled phenomenon of oil as the air-conditioning system 100 of throttling arrangement in the structures such as tubule.
Further, the air-conditioning system 100 also includes one end and the outlet B, the other end respectively with first valve
Body 2, the first check valve 10 of the second valve body 3 connection.First check valve 10 is used to guide to flow out out of described heat exchange coil 7
Refrigerant from the outlet B, flow to first valve body 2 through first check valve 10；Or cause from the compressor 1
The refrigerant of exhaust outlet D outflows flows into first valve body 2, and prevents the refrigerant from entering institute through first check valve 10
State the outlet B of heat exchange coil 7.
Further, the air-conditioning system 100 is provided with the between the indoor heat exchanger 4 and the main throttling arrangement 8
Two check valves 11, when air-conditioning system 100 runs refrigeration mode, second check valve 11 makes winner's throttling arrangement 8 have throttling
Effect, now auxiliary throttling arrangement 9 is shorted, and therefore, can guide the refrigerant from the outdoor heat exchanger 5 outflow successively through institute
State main throttling arrangement 8, the second check valve 11 flows to the indoor heat exchanger 4；When air-conditioning system 100 runs heating mode, by
In the direction restriction effect of the second check valve 11 so that main throttling arrangement 8 and auxiliary throttling arrangement 9 are respectively provided with throttling action, therefore,
The refrigerant flowed out from the indoor heat exchanger 4 can be guided to be flowed to successively through the auxiliary throttling arrangement 9, main throttling arrangement 8
The outdoor heat exchanger 5.
Reference picture 2, the method that above-mentioned air-conditioning system 100 performs control comprise the following steps：
Step S1, monitor whether the air-conditioning system 100 completes defrosting mode；
Step S2, when the air-conditioning system 100 is completed to defrost, the switching of the valve body 3 of the first valve body 2 and second is adjusted
Direction, the refrigerant of high temperature is flowed out into the heat exchange coil 7 from the exhaust outlet D and exchanged heat, with to the oil sump
Interior lubricating oil is heated.
In the present embodiment, can whether air-conditioning system 100 completes defrosting mode in real time or described in periodic monitor, in the sky
When adjusting system 100 completes defrosting, the switching direction of the valve body 3 of the first valve body 2 and second is adjusted so that from the compressor 1
Exhaust outlet D outflow high temperature refrigerant can enter heat exchange coil 7, the lubricating oil in oil sump is entered using the refrigerant of high temperature
Row heating, throttling arrangement such as capillary pipe structure is blocked so as to prevent refrigerant from separating out flocculent substance.
The control method of air-conditioning system 100 provided by the utility model, by when air-conditioning system 100 is completed to defrost, adjusting
The switching direction of the whole valve body 3 of first valve body 2 and second, makes the refrigerant of high temperature flow out into institute from the exhaust outlet D
State heat exchange coil 7 to be exchanged heat, to heat the lubricating oil in the oil sump.It in this way, can make air-conditioning system 100
During the refrigerant such as R290 types operation defrosting mode being limited with charging amount, prevent from using the structures such as capillary as throttling arrangement
There is the stifled phenomenon of oil in air-conditioning system 100.
In one embodiment, on the basis of shown in Fig. 2, the step S2 further comprises：
When the air-conditioning system 100 is completed to defrost, the switching direction of the valve body 3 of the first valve body 2 and second is adjusted, is drawn
The high temperature refrigerant from the exhaust outlet D outflows of the compressor 1 is led successively through second valve body 3, heat exchange coil 7, the first valve
Body 2, indoor heat exchanger 4, outdoor heat exchanger 5, the first valve body 2, then flow back to the compressor 1 by gas returning port C.
In the present embodiment, when the air-conditioning system 100 is completed to defrost, the valve body 3 of the first valve body 2 and second is adjusted
Switching direction so that the high temperature refrigerant flowed out from the exhaust outlet D of the compressor 1 is directly entered after second valve body 3
In the heat exchange coil 7 of the compressor 1, and heat exchange is carried out at the heat exchange coil 7, to be carried out to the lubricating oil in oil sump
Heating, then after the completion of the heat exchange, the refrigerant flowed out from the outlet B is successively through first check valve 10, the first valve
After body 2, indoor heat exchanger 4, auxiliary throttling arrangement 9, main throttling arrangement 8, outdoor heat exchanger 5, the first valve body 2 is flowed back to, finally in institute
State and flow back to the compressor 1 through the gas returning port C under the guiding function of the first valve body 2.The auxiliary throttling arrangement 9 is in air-conditioning system
During 100 operation heating mode, throttling action can be just played, and when running refrigeration mode and is not involved in throttling, therefore, in this mould
Do not have throttling action under formula.When air-conditioning system 100 runs refrigeration mode, second check valve 11 makes winner's throttling arrangement
8 have throttling action, and now auxiliary throttling arrangement 9 is shorted, and therefore, can guide the refrigeration from the outdoor heat exchanger 5 outflow
Agent flows to the indoor heat exchanger 4 through the main throttling arrangement 8, the second check valve 11 successively；Run and heat in air-conditioning system 100
During pattern, due to the direction restriction effect of the second check valve 11 so that main throttling arrangement 8 and auxiliary throttling arrangement 9 are respectively provided with throttling
Effect, therefore, can guide the refrigerant flowed out from the indoor heat exchanger 4 successively through the auxiliary throttling arrangement 9, main throttling
Device 8 flows to the outdoor heat exchanger 5.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure under utility model of the present utility model design, made using the utility model specification and accompanying drawing content
Conversion, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
- A kind of 1. air-conditioning system, it is characterised in that the air-conditioning system include compressor, the first valve body, the second valve body and mutually The indoor heat exchanger and outdoor heat exchanger being connected, the compressor have an oil sump, heat exchange coil, institute are provided with the oil sump Stating heat exchange coil has inlet and outlet,First valve body respectively with second valve body, the outlet, the outdoor heat exchanger, the compressor return-air Mouth, indoor heat exchanger connection,The exhaust outlet with the compressor, outlet and import are connected second valve body respectively,The air-conditioning system also includes controller, and the controller is used for when air-conditioning system is completed to defrost, adjustment described first The switching direction of valve body and the second valve body, the refrigerant of high temperature is flowed out into the heat exchange coil from the exhaust outlet and carry out Heat exchange, to be heated to the lubricating oil in the oil sump.
- 2. air-conditioning system as claimed in claim 1, it is characterised in that first valve body is four-way valve, second valve body For triple valve.
- 3. air-conditioning system as claimed in claim 2, it is characterised in that the air-conditioning system also includes one end and the outlet, The first check valve that the other end is connected with first valve body, the second valve body respectively.
- 4. air-conditioning system as claimed in claim 3, it is characterised in that first check valve is used to guide from the heat exchange disk The refrigerant of outflow flows to first valve body from the outlet through first check valve in pipe.
- 5. air-conditioning system as claimed in claim 1, it is characterised in that the air-conditioning system is also changed including one end with the interior Hot device connection, the main throttling arrangement that the other end is connected with the outdoor heat exchanger.
- 6. air-conditioning system as claimed in claim 5, it is characterised in that the air-conditioning system is in the indoor heat exchanger and described The second check valve is provided between main throttling arrangement.
- 7. air-conditioning system as claimed in claim 6, it is characterised in that second check valve is used to guide to be changed from the outdoor The refrigerant of hot device outflow flows to the indoor heat exchanger through the main throttling arrangement, the second check valve successively.
- 8. air-conditioning system as claimed in claims 6 or 7, it is characterised in that the air-conditioning system also includes one end and the master Throttling arrangement connects, the auxiliary throttling arrangement that the other end is connected with second check valve and the indoor heat exchanger respectively.
- 9. air-conditioning system as claimed in claim 8, it is characterised in that the main throttling arrangement and auxiliary throttling arrangement are capillary Structure.
- 10. air-conditioning system as claimed in claim 1, it is characterised in that the refrigerant is R290.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460346.9U CN206695426U (en) | 2017-04-27 | 2017-04-27 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460346.9U CN206695426U (en) | 2017-04-27 | 2017-04-27 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206695426U true CN206695426U (en) | 2017-12-01 |
Family
ID=60446366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720460346.9U Active CN206695426U (en) | 2017-04-27 | 2017-04-27 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206695426U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062679A (en) * | 2017-04-27 | 2017-08-18 | 广东美的制冷设备有限公司 | Air-conditioning system and its control method |
| WO2023178870A1 (en) * | 2022-03-24 | 2023-09-28 | 广东美的制冷设备有限公司 | Air conditioning system, control device and method therefor, and computer storage medium |
| WO2023178867A1 (en) * | 2022-03-24 | 2023-09-28 | 广东美的制冷设备有限公司 | Compressor, air conditioning system and control method therefor, and computer storage medium |
-
2017
- 2017-04-27 CN CN201720460346.9U patent/CN206695426U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062679A (en) * | 2017-04-27 | 2017-08-18 | 广东美的制冷设备有限公司 | Air-conditioning system and its control method |
| WO2023178870A1 (en) * | 2022-03-24 | 2023-09-28 | 广东美的制冷设备有限公司 | Air conditioning system, control device and method therefor, and computer storage medium |
| WO2023178867A1 (en) * | 2022-03-24 | 2023-09-28 | 广东美的制冷设备有限公司 | Compressor, air conditioning system and control method therefor, and computer storage medium |
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