CN206676353U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
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- CN206676353U CN206676353U CN201720437346.7U CN201720437346U CN206676353U CN 206676353 U CN206676353 U CN 206676353U CN 201720437346 U CN201720437346 U CN 201720437346U CN 206676353 U CN206676353 U CN 206676353U
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- air
- heat exchanger
- conditioning system
- throttling arrangement
- bypass line
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Abstract
The utility model discloses a kind of air-conditioning system, including compressor, four-way valve, outdoor heat exchanger, throttling arrangement and indoor heat exchanger, the compressor, the four-way valve, the outdoor heat exchanger, the throttling arrangement connect the major loop to be formed for refrigerant circulation by pipeline with the indoor heat exchanger；The air-conditioning system also includes the bypass line in parallel with the throttling arrangement, and control valve is in series with the bypass line.Technical solutions of the utility model parallel connection bypass line at throttling arrangement, after air-conditioning heating runs a period of time, by closing throttling arrangement, open control valve, so that refrigerant is directly passed to outdoor heat exchanger from indoor heat exchanger by bypass line, defrost is carried out to outdoor heat exchanger using the residual temperature of refrigerant liquid, to realize the flow direction for not changing refrigerant, defrost is carried out to outdoor heat exchanger, does not influence the effect of indoor temperature when having reached defrost.
Description
Technical field
Field of air conditioning is the utility model is related to, more particularly to a kind of air-conditioning system.
Background technology
With the development of air-conditioning technical, requirement more and more higher of the consumer to product comfort, in winter heating mode,
The phenomenon of frosting occurs in the outdoor unit heat exchanger of air-conditioning system, and the defrost technology of current cold-warm type air-conditioning is to make mostly
After thermal cycle for a period of time, kind of refrigeration cycle is switched to, i.e., by outdoor heat exchanger as condenser, indoor heat exchanger is as evaporator
To carry out defrost to outdoor heat exchanger, but so the problem of causing indoor temperature change generated in case larger.
Utility model content
Main purpose of the present utility model is to propose a kind of air-conditioning system, it is intended to solves indoor temperature change generated in case during air-conditioning defrost
Larger technical problem.
To achieve the above object, the utility model proposes air-conditioning system, including compressor, four-way valve, outdoor heat exchanger,
Throttling arrangement and indoor heat exchanger, the compressor, the four-way valve, the outdoor heat exchanger, the throttling arrangement and described
Indoor heat exchanger connects the major loop to be formed for refrigerant circulation by pipeline；The air-conditioning system also includes and the throttling arrangement
Bypass line in parallel, control valve is in series with the bypass line.
Preferably, the air-conditioning system includes multiple indoor heat exchangers and multiple throttling arrangements, Mei Gesuo
State indoor heat exchanger one throttling arrangement of corresponding series connection, each indoor heat exchanger connected with throttling arrangement the stream to be formed it
Between it is in parallel.
Preferably, the air-conditioning system includes multiple bypass lines, the corresponding institute in parallel of each throttling arrangement
State bypass line.
Preferably, the bypass line and multiple throttling arrangements are in parallel.
Preferably, the bypass line is provided with the heater connected with the control valve.
Preferably, regenerative apparatus is provided between the indoor heat exchanger and the throttling arrangement.
Preferably, it is in series with gas-liquid separator between the gas returning port of the four-way valve and the compressor.
Preferably, it is in series with electric heater between the gas-liquid separator and the four-way valve.
Preferably, the control valve is magnetic valve.
Preferably, the throttling arrangement is electric expansion valve or capillary.
Technical solutions of the utility model parallel connection bypass line at throttling arrangement, after air-conditioning heating runs a period of time,
By closing throttling arrangement, control valve is opened, is changed so that refrigerant is directly passed to outdoor from indoor heat exchanger by bypass line
Hot device, defrost is carried out to outdoor heat exchanger using the residual temperature of refrigerant liquid, to realize the flow direction for not changing refrigerant, to outdoor heat exchange
Device carries out defrost, does not influence the effect of indoor temperature when having reached defrost.
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 utility model air-conditioning system first embodiment；
Fig. 2 is the structural representation of the utility model air-conditioning system second embodiment；
Fig. 3 is the structural representation of the utility model air-conditioning system 3rd embodiment；
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Compressor | 101 | Exhaust outlet |
| 102 | Gas returning port | 200 | Four-way valve |
| 300 | Outdoor heat exchanger | 400 | Indoor heat exchanger |
| 500 | Throttling arrangement | 600 | Bypass line |
| 700 | Control valve | 800 | Gas-liquid separator |
| 900 | Electric heater |
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 related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of air-conditioning system.
In the utility model embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, the air-conditioning system includes compressor 100, four-way valve
200th, outdoor heat exchanger 300, throttling arrangement 500 and indoor heat exchanger 400, it is the compressor 100, the four-way valve 200, described
Outdoor heat exchanger 300, the throttling arrangement 500 connect to be formed for refrigerant circulation with the indoor heat exchanger 400 by pipeline
Major loop；The air-conditioning system also includes the bypass line 600 in parallel with the throttling arrangement 500, is gone here and there on the bypass line 600
It is associated with control valve 700.
Refrigeration principle：Closing control valve 700, throttling arrangement 500 is opened, now refrigerant becomes after the compression of compressor 100
Gaseous coolant into HTHP is discharged from exhaust outlet 101, after flowing through four-way valve 200, passes through (this phase of outdoor heat exchanger 300
When in condenser) condensation become the refrigerant liquid of high temperature high pressure, it is low into low temperature by the reducing pressure by regulating flow of throttling arrangement 500
Liquid refrigerants is pressed, evaporation endothermic when flowing through indoor heat exchanger 400 (now equivalent to evaporator), is carried out with the room air of surrounding
Heat exchange, while absorbing surrounding air heat, accelerate the speed of cold air circulation by indoor fan, refrigerant liquid evaporation becomes
Into after low-temp low-pressure cold media gas, after four-way valve 200, it is back in compressor 100, to carry out subsequent cycle, so as to
Realize the function to room air refrigeration.
Heat principle：Closing control valve 700, open throttling arrangement 500, now exhaust of the cold media gas from compressor 100
Mouth 101 is discharged, and now refrigerant is high temperature and high pressure gas, and after flowing through four-way valve 200, it is (now suitable to first pass through indoor heat exchanger 400
In condenser) and room air progress heat exchange, increase ambient air temperature by heat release liquefaction, while pass through indoor fan
Accelerate the velocity of liquid assets of hot-air, become high temperature high-pressure liquid refrigerant after HTHP cold media gas heat release, filled by throttling
Put the effect of 500 reducing pressure by regulating flow and become low-temp low-pressure liquid refrigerants, steamed when flowing through outdoor heat exchanger 300 (now equivalent to evaporator)
Low-temp low-pressure cold media gas is sent out into, four-way valve 200 is passed through and returns to afterwards in compressor 100, to carry out subsequent cycle, so as to real
Now to the heat-production functions of room air.
Because winter makes outdoor temperature is too low, air-conditioning heating for a period of time after, because refrigerant flows through outdoor heat exchanger 300
When evaporation endothermic, the frosting of outdoor heat exchanger 300 can be caused, in order to outdoor heat exchanger 300 carry out defrost, in throttling arrangement 500
Locate bypass line 600 in parallel, by opening control valve 700, close throttling arrangement 500 cause high temperature high-pressure liquid refrigerant without
Throttling arrangement 500 is crossed, and outdoor heat exchanger 300 is directly flowed at bypass line 600.
Defrost principle：Do not change the loop direction of refrigerant under heating mode, close throttling arrangement 500, open control valve
700, now high temperature high-pressure liquid refrigerant from indoor heat exchanger 400 come out after, outdoor is directly flowed to by bypass line 600
In heat exchanger 300, acted on without the reducing pressure by regulating flow of throttling arrangement 500, then will not change the temperature of high temperature high-pressure liquid refrigerant
Degree so that pressure, temperature variation will not occur when flowing through outdoor heat exchanger 300 for refrigerant, so as to directly and outdoor heat exchanger
300 carry out heat exchange, and because refrigerant liquid is the high temperature high-pressure liquid refrigerant directly from indoor heat exchanger 400 out, foot
Enough defrosts on outdoor heat exchanger 300 provide heat, it is achieved thereby that do not change the loop direction of refrigerant in air-conditioning, it is directly sharp
The function of defrost is carried out to outdoor heat exchanger 300 with the residual temperature of refrigerant liquid so that while defrost, do not influence the temperature of interior
Degree, improve the comfort level of user.
Certainly in actual application, can also reduce directly by the way that the aperture of throttling arrangement 500 is reached into maximum to cold
The reducing pressure by regulating flow effect of matchmaker's liquid.In order that defrost effect is more preferable, the rotating speed of indoor fan in defrost pattern, can be reduced, with
The liquid refrigerants heat losses at heat exchanger 400 indoors are reduced, so that the temperature of liquid refrigerants is sufficiently high, improve the effect of defrost
Rate.The main function of throttling arrangement 500 be to liquid refrigerants reducing pressure by regulating flow, in the present embodiment, preferably for capillary or
Electric expansion valve.The main function of control valve 700 is the break-make for controlling the bypass line 600, without other special work(
Can, and in order to more convenient control, in the present embodiment, preferably magnetic valve.
Technical solutions of the utility model parallel connection bypass line 600 at throttling arrangement 500, when air-conditioning heating runs one section
Between after, by closing throttling arrangement 500, control valve 700 is opened, so that refrigerant directly passes through bypass pipe from indoor heat exchanger 400
Road 600 is passed to outdoor heat exchanger 300, carries out defrost to outdoor heat exchanger 300 using the residual temperature of refrigerant liquid, is not changed with realizing
Become the flow direction of refrigerant, defrost is carried out to outdoor heat exchanger 300, does not influence the effect of indoor temperature when having reached defrost.
Further, reference picture 2 and Fig. 3, the air-conditioning system include multiple indoor heat exchangers 400 and multiple institutes
Throttling arrangement 500 is stated, one throttling arrangement 500 of each corresponding series connection of the indoor heat exchanger 400, each indoor heat exchanger
400 connected with the throttling arrangement 500 it is in parallel between the stream formed.In the present embodiment, the air-conditioning system includes multiple rooms
Interior heat exchanger 400 connects with an outdoor heat exchanger 300 (be commonly called as one and drag more air-conditionings), because throttling arrangement 500 is mainly used in pair
Flow through its refrigerant and carry out reducing pressure by regulating flow effect, corresponding each indoor heat exchanger 400 sets a throttling arrangement 500, to realize
To the independent control for the refrigerant heat transfer effect for flowing through each indoor heat exchanger 400.And after each throttling arrangement 500 will be flowed through
After refrigerant is collected, connected with outdoor heat exchanger 300, to realize that air-conditioning system controls more indoor sets by an outdoor unit
Function.
Alternatively, reference picture 2, on the basis of a upper embodiment, the air-conditioning system includes multiple bypass lines
600, the corresponding bypass line 600 in parallel of each throttling arrangement 500.Each indoor heat exchanger 400 corresponding one
Individual throttling arrangement 500, the corresponding bypass line 600 of each throttling arrangement 500, and it is in series with one on each bypass line 600
Individual control valve 700, then during defrost, one or more throttling arrangements 500 can be closed according to being actually needed, at the same it is right
One or more control valves 700 should be opened to meet the defrost requirement different to outdoor heat exchanger 300.
Alternatively, reference picture 3, on the basis of having multiple indoor heat exchangers 400, a bypass line 600 and each institute
It is in parallel to state throttling arrangement 500.During defrost, throttling arrangement 500 is closed, opens control valve 700 so that refrigerant is from interior
Heat exchanger 400 flows out, and without throttling arrangement 500, and is directly circulated at bypass line 600 at outdoor heat exchanger 300, with
Realize using refrigerant residual temperature to the defrost of outdoor heat exchanger 300.And in the case where there is multiple indoor heat exchangers 400, it will can bypass
Pipeline 600 is correspondingly arranged into multiple branch roads with one end that indoor heat exchanger 400 is connected and is respectively communicated with, and is changed with realizing from each interior
The refrigerant that hot device 400 flows out all is aggregated at main bypass line 600, directly can open bypass pipe by a control valve 700
Road 600, to realize the defrosting function to outdoor heat exchanger 300.
Further, the bypass line 600 is provided with the heater connected with the control valve 700.In order that
The effect of defrost is more preferable, can install heater additional on bypass line 600 and refrigerant is heated, increase the temperature of refrigerant, make
Obtain the more efficient of defrost.In actual applications, as long as heater can meet to heat refrigerant, and control for convenience
System, can be electric heater.
Further, regenerative apparatus is provided between the indoor heat exchanger 400 and the throttling arrangement 500.Heating
Under pattern, due to the blower fan operating at outdoor heat exchanger 300 so that the heat of the refrigerant in whole air-conditioning system increases, accumulation of heat
Device absorbs the heat flowed through in its refrigerant and carries out storing heat；When air-conditioning system carries out defrost, close or reduce and be outdoor
Blower fan at heat exchanger 300 so that the heat that refrigerant absorbs at outdoor heat exchanger 300 reduces so that in whole air-conditioning system
The heat of refrigerant reduces, then when refrigerant passes through regenerative apparatus, before regenerative apparatus release stored heat convection through its
Refrigerant heats, and to increase the temperature of refrigerant, is flowed directly to by bypass line 600 at outdoor heat exchanger 300, so that defrost efficiency
It is higher.
Further, reference picture 1, Fig. 2 and Fig. 3, between the gas returning port 102 of the four-way valve 200 and the compressor 100
Series connection is provided with gas-liquid separator 800.In order to prevent liquid refrigerants from entering in compressor 100 from the gas returning port 102 of compressor 100
Liquid hazards compressor 100 is produced, therefore sets gas-liquid separator 800 to separate the liquid in refrigerant.
Further, with continued reference to Fig. 1, Fig. 2 and Fig. 3, between the gas-liquid separator 800 and the four-way valve 200
It is in series with electric heater 900.During defrost, liquid refrigerants flows out directly at indoor heat exchanger 400, to outdoor heat exchanger
Liquid condition is still within after 300 progress defrosts, now to prevent the gas-liquid separation effect of gas-liquid separator 800 bad, is set
Electric heater 900, electric heater 900 carry out heating evaporation to flowing through its liquid refrigerants so that refrigerant is by gas-liquid separation
During device 800, the effect of gas-liquid separation is more abundant.In actual applications, as long as electric heater 900 can meet heating function i.e.
Can, in the present embodiment, for more easily regulation and in view of cost, electric heater typically has Electromagnetic Heating, infrared
Heating or resistance heating, can be selected according to being actually needed.
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 change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content
Change, 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)
1. a kind of air-conditioning system, it is characterised in that including compressor, four-way valve, outdoor heat exchanger, throttling arrangement and indoor heat exchange
Device, the compressor, the four-way valve, the outdoor heat exchanger, the throttling arrangement and the indoor heat exchanger pass through pipeline
Connection forms the major loop for refrigerant circulation；The air-conditioning system also includes the bypass line in parallel with the throttling arrangement, institute
State and control valve is in series with bypass line.
2. air-conditioning system as claimed in claim 1, it is characterised in that the air-conditioning system includes multiple indoor heat exchangers
And multiple throttling arrangements, one throttling arrangement of each corresponding series connection of the indoor heat exchanger, each indoor heat exchange
Device is connected in parallel between the stream to be formed with throttling arrangement.
3. air-conditioning system as claimed in claim 2, it is characterised in that the air-conditioning system includes multiple bypass lines, each
The corresponding bypass line in parallel of the throttling arrangement.
4. air-conditioning system as claimed in claim 2, it is characterised in that the bypass line and multiple throttling arrangements are simultaneously
Connection.
5. the air-conditioning system as described in Claims 1-4 any one, it is characterised in that the bypass line is provided with and institute
State the heater of control valve series connection.
6. the air-conditioning system as described in Claims 1-4 any one, it is characterised in that the indoor heat exchanger with it is described
Regenerative apparatus is provided between throttling arrangement.
7. the air-conditioning system as described in Claims 1-4 any one, it is characterised in that the four-way valve and the compressor
Gas returning port between be in series with gas-liquid separator.
8. air-conditioning system as claimed in claim 7, it is characterised in that gone here and there between the gas-liquid separator and the four-way valve
It is associated with electric heater.
9. the air-conditioning system as described in Claims 1-4 any one, it is characterised in that the control valve is magnetic valve.
10. the air-conditioning system as described in Claims 1-4 any one, it is characterised in that the throttling arrangement is electronic expansion
Valve or capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720437346.7U CN206676353U (en) | 2017-04-24 | 2017-04-24 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720437346.7U CN206676353U (en) | 2017-04-24 | 2017-04-24 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206676353U true CN206676353U (en) | 2017-11-28 |
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ID=60400596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720437346.7U Active CN206676353U (en) | 2017-04-24 | 2017-04-24 | Air-conditioning system |
Country Status (1)
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|---|---|
| CN (1) | CN206676353U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965853A (en) * | 2017-12-20 | 2018-04-27 | 广东美的暖通设备有限公司 | The outdoor unit and control method of three control multi-line systems |
| CN108931075A (en) * | 2018-06-20 | 2018-12-04 | 广东美的暖通设备有限公司 | Heat pump system and its control method |
| CN110186151A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Progress control method, operating control device, air conditioner and storage medium |
| CN110307680A (en) * | 2019-05-31 | 2019-10-08 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN114508891A (en) * | 2020-11-16 | 2022-05-17 | 合肥美的电冰箱有限公司 | Refrigerator refrigerating system and refrigerator defrosting method |
-
2017
- 2017-04-24 CN CN201720437346.7U patent/CN206676353U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965853A (en) * | 2017-12-20 | 2018-04-27 | 广东美的暖通设备有限公司 | The outdoor unit and control method of three control multi-line systems |
| CN107965853B (en) * | 2017-12-20 | 2024-06-14 | 广东美的暖通设备有限公司 | Outdoor unit of three-pipe multi-split air conditioner system and control method |
| CN108931075A (en) * | 2018-06-20 | 2018-12-04 | 广东美的暖通设备有限公司 | Heat pump system and its control method |
| CN110307680A (en) * | 2019-05-31 | 2019-10-08 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN110186151A (en) * | 2019-07-11 | 2019-08-30 | 芜湖美智空调设备有限公司 | Progress control method, operating control device, air conditioner and storage medium |
| CN110186151B (en) * | 2019-07-11 | 2021-04-27 | 芜湖美智空调设备有限公司 | Operation control method, operation control device, air conditioner, and storage medium |
| CN114508891A (en) * | 2020-11-16 | 2022-05-17 | 合肥美的电冰箱有限公司 | Refrigerator refrigerating system and refrigerator defrosting method |
| WO2022100749A1 (en) * | 2020-11-16 | 2022-05-19 | 合肥美的电冰箱有限公司 | Refrigeration system for refrigerator and defrosting method for refrigerator |
| EP4134604A4 (en) * | 2020-11-16 | 2023-11-15 | Hefei Midea Refrigerator Co., Ltd. | Refrigeration system for refrigerator and defrosting method for refrigerator |
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