CN108375255A - Air-conditioner system - Google Patents

Air-conditioner system Download PDF

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Publication number
CN108375255A
CN108375255A CN201711471669.9A CN201711471669A CN108375255A CN 108375255 A CN108375255 A CN 108375255A CN 201711471669 A CN201711471669 A CN 201711471669A CN 108375255 A CN108375255 A CN 108375255A
Authority
CN
China
Prior art keywords
heat exchanger
air
conditioner system
pipeline
refrigerant
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
Application number
CN201711471669.9A
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Chinese (zh)
Other versions
CN108375255B (en
Inventor
王飞
付裕
罗荣邦
许文明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN201711471669.9A priority Critical patent/CN108375255B/en
Publication of CN108375255A publication Critical patent/CN108375255A/en
Priority to PCT/CN2018/115748 priority patent/WO2019128517A1/en
Priority to EP18894319.5A priority patent/EP3734199B1/en
Priority to JP2020535567A priority patent/JP6982692B2/en
Application granted granted Critical
Publication of CN108375255B publication Critical patent/CN108375255B/en
Active legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00Subcoolers, desuperheaters or superheaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • F25B47/022Defrosting cycles hot gas defrosting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B40/00Subcoolers, desuperheaters or superheaters
    • F25B40/02Subcoolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/20Disposition of valves, e.g. of on-off valves or flow control valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/39Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0211Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during defrosting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/021Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
    • F25B2313/0213Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit the auxiliary heat exchanger being only used during heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13Economisers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/09Improving heat transfers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/31Low ambient temperatures

Abstract

The invention belongs to air conditioner technical fields, and in particular to a kind of air-conditioner system.In order to improve the heating circulating effect of air conditioner, air-conditioner system of the invention includes the compressor being connected in major loop, indoor heat exchanger, first throttling device and outdoor heat exchanger, and heat exchanger and the first gas-liquid separator are additionally provided in major loop;The side of heat exchanger is connected with the first pipeline between first throttling device and indoor heat exchanger, and the other side of heat exchanger is connected with the second pipeline between first throttling device and outdoor heat exchanger;Refrigerant by the first pipeline can carry out heat exchange with the refrigerant by the second pipeline in heat exchanger;Second pipe section of first gas-liquid separator between heat exchanger and outdoor heat exchanger, bypass line is provided between the first gas-liquid separator and compressor.The present invention does not increase the degree of supercooling of refrigerant in the first pipeline only effectively, can also reduce system power dissipation, increases refrigerant circulation, to promote the heating capacity of whole system.

Description

Air-conditioner system
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of air-conditioner system.
Background technology
Existing air-conditioner system usually forms refrigerating/heating cycle by condenser, throttling set, evaporator, compressor The high pressure gaseous refrigerant in circuit, compressor discharge condenses into cryogenic high pressure liquid within the condenser, and through throttling set section Low temperature and low pressure liquid is flowed into, absorbs heat and evaporates subsequently into evaporator, completes a refrigerating/heating cycle.
For air conditioner in heating operation, the gaseous coolant of high temperature and pressure forms cryogenic high pressure after exchanging heat by condenser Liquid refrigerants, then pass through throttling set reducing pressure by regulating flow, formed low-temp low-pressure Gas-liquid phase region refrigerant, changed into evaporator Heat.Disengagement area is bigger, then relative evaporation ability is higher.Wherein, if the liquid refrigerants of cryogenic high pressure continues heat release and can increase Degree of supercooling, to increase the refrigerated medium heat of system circulation.Refrigerant in heat exchange, 95% or more heat exchange amount from its two The latent heat of vaporization amount of phase region, and the constant pressure specific heat appearance in unidirectional area's (neat liquid, pure gas) is comparatively small, heat exchange amount accounts for total system and follows The ratio of ring is small.In addition, pressure drop of the gaseous refrigerant in pipeline is big, it is the main source of system refrigerant circulation crushing, can increases Add circular work amount, that is, increases the energy consumption of system circulation.
In addition, with reference to Fig. 3, circulation theory figure when Fig. 3 is conventional air conditioner heating operation.As shown in figure 3, air conditioner system The actual motion temperature spot of heat operation is generally, and A points 70 DEG C of refrigerants of high-temperature gas get in the indoor ring of heat exchanger and 20 DEG C Border exchanges heat, and temperature is reduced to 30 DEG C, enters throttling set after flowing through online pipe, wherein the temperature between B points and throttling set Degree (30 DEG C or so) is significantly larger than 7 DEG C of outdoor environment temperature, and waste heat is wasted, if waste heat is absorbed and used, can also increase The degree of supercooling of system refrigerant circulation.
Based on this, spy proposes the present invention.
Invention content
In order to solve the above problem in the prior art, in order to improve the heating circulating effect of air conditioner, the present invention carries The air-conditioner system of confession includes the compressor being connected in major loop, indoor heat exchanger, first throttling device and outdoor heat exchanger, Heat exchanger and the first gas-liquid separator are additionally provided in the major loop;The side of the heat exchanger and the first throttle The first pipeline between device and the indoor heat exchanger is connected, the other side of the heat exchanger and the first throttling device The second pipeline between the outdoor heat exchanger is connected;By the refrigerant of first pipeline and pass through second pipeline Refrigerant can carry out heat exchange in the heat exchanger;First gas-liquid separator is located at the heat exchanger and the room In the second pipe section between external heat exchanger, and bypass pipe is provided between first gas-liquid separator and the compressor Road.
In the preferred embodiment of above-mentioned air-conditioner system, it is provided with second throttling device in the bypass line, when When the air-conditioner system heating operation, the second throttling device is used to control the flow of gaseous coolant.
In the preferred embodiment of above-mentioned air-conditioner system, first pipeline passes through the side of the heat exchanger, And/or second pipeline passes through the other side of the heat exchanger.
In the preferred embodiment of above-mentioned air-conditioner system, third throttling set, institute are additionally provided in the major loop It states in the first pipe section of the third throttling set between the heat exchanger and the indoor heat exchanger.
In the preferred embodiment of above-mentioned air-conditioner system, when the air-conditioner system heating operation, the third Throttling set is shown in a fully open operation, and the first throttling device is used for coolant throttle.
In the preferred embodiment of above-mentioned air-conditioner system, when the air-conditioner system refrigerating operaton, described first Throttling set is shown in a fully open operation, and the third throttling set is used for coolant throttle.
In the preferred embodiment of above-mentioned air-conditioner system, the compressor is provided with the second gas-liquid separator, refrigerant It is flowed back into the compressor after second gas-liquid separator.
In the preferred embodiment of above-mentioned air-conditioner system, the bypass line is connected to second gas-liquid separator Upstream.
In the preferred embodiment of above-mentioned air-conditioner system, the air-conditioner system further includes mode-changeover device, institute Mode-changeover device is stated for switching the air-conditioner system between refrigeration mode and heating mode.
In the preferred embodiment of above-mentioned air-conditioner system, the mode-changeover device is four-way valve.
In the inventive solutions, heat exchanger, and the both sides of the heat exchanger are increased in air-conditioner system It is connected respectively with the first pipeline and the second pipeline, so, the refrigerant in refrigerant and the second pipeline in the first pipeline can Heat exchange is carried out at heat exchanger, not only effectively increases the degree of supercooling of the refrigerant in the first pipeline, but also can promote Into the evaporation of the refrigerant in the second pipeline, to improve the heating capacity of system.Also, the present invention the first gas-liquid separator with It is provided with bypass line between compressor, can be entered by the bypass line by the gaseous coolant of the first gas-liquid separator The air entry of compressor, to reduce the pressure loss of this part gaseous coolant in heating recycles, equivalent to increase pressure The pressure of contracting machine air entry, thereby reduces the power consumption of compressor, increases air-conditioner system and is heating refrigerant when recycling Internal circulating load plays the purpose for promoting heating capacity.In addition, the present invention air conditioner also in such a way that third throttling set is set, So that air conditioner substitutes first throttling device (first throttle at this time when being switched to refrigeration mode, using the third throttling set Device is shown in a fully open operation) it throttles to refrigerant, the phenomenon that so as to avoid refrigerating capacity is lowered when appearing in refrigeration cycle.
Description of the drawings
Fig. 1 is the structure principle chart of the embodiment one of the air-conditioner system of the present invention;
Fig. 2 is the structure principle chart of the embodiment two of the air-conditioner system of the present invention;
Circulation theory figure when Fig. 3 is conventional air conditioner heating operation.
Specific implementation mode
To keep the embodiment of the present invention, technical solution and advantage more obvious, below in conjunction with attached drawing to the skill of the present invention Art scheme is clearly and completely described, it is clear that and the embodiment described is a part of the embodiment of the present invention, rather than all Embodiment.It will be apparent to a skilled person that these embodiments are used only for explaining the technical principle of the present invention, and It is not intended to be limiting protection scope of the present invention.
It is the structure principle chart of the embodiment one of the air-conditioner system of the present invention with reference first to Fig. 1, Fig. 1.As shown in Figure 1, The air-conditioner system of the present invention includes that the compressor 1 for being connected on major loop, indoor heat exchanger 2, first throttling device 3 and outdoor are changed Hot device 4 is additionally provided with heat exchanger 5 in the major loop.For convenience of description, by first throttling device 3 and indoor heat exchanger 2 Between pipeline as the first pipeline M, using the pipeline between first throttling device 3 and outdoor heat exchanger 4 as the second pipeline N, The side of heat exchanger 5 is connected with the first pipeline M, and the other side of heat exchanger 5 is connected with the second pipeline N, as shown in Figure 1 Connection type:First pipeline M passes through the side of heat exchanger 5, the second pipeline N to pass through the other side of heat exchanger N.Also, it is logical It crosses the refrigerant of the first pipeline M and heat exchange can be carried out in heat exchanger 5 by the refrigerant of the second pipeline N.In addition, leading back Be additionally provided with the first gas-liquid separator 6 in road, the first gas-liquid separator 6 between heat exchanger 5 and outdoor heat exchanger 4 Two pipeline N sections, and it is provided with bypass line L between the first gas-liquid separator 6 and compressor 1.
In air conditioner heat-production cyclic process, the high pressure gaseous refrigerant that compressor 1 is discharged flows to indoor heat exchanger 2, Heat exchanger 2 carries out heat exchange indoors, becomes the liquid refrigerants of cryogenic high pressure, refrigerant by reaching C points along the first pipeline M, this When refrigerant temperature 20 DEG C or so (heat herein is not efficiently used for waste heat).Then, refrigerant is filled by first throttle Enter the second pipeline N after setting 3 throttlings, the temperature of D points refrigerant (refrigerant after throttling) makees 5 DEG C or so at this time.Due to first There are the temperature difference for the refrigerant in refrigerant and the second pipeline N in pipeline M, and both pass through heat exchanger 5, so, first The refrigerant in refrigerant and the second pipeline N in pipeline M carries out heat exchange at heat exchanger 5, not only effectively increases first The degree of supercooling (i.e. the part refrigerant of C points to first throttling device 3 continues heat release cooling) of refrigerant in pipeline M, but also can With promote the second pipeline N in refrigerant evaporation (i.e. low temperature refrigerant at D points can be evaporated heat absorption to waste heat at C points, this Also correspond to increase disengagement area, effectively improve exchange capability of heat), to improve heating capacity.
Next, the refrigerant after over-heat-exchanger 5 is exchanged heat enters the first gas-liquid separator 6, by the first gas-liquid The gaseous coolant that separator 6 is isolated directly is flowed back into along bypass line L in compressor 1, cold to reduce this part gaseous state The pressure loss of the matchmaker in heating recycles, also corresponds to the pressure for increasing 1 air entry of compressor, thereby reduces compressor 1 Power consumption, increase air-conditioner system heat recycle when refrigerant circulation, play promoted heating capacity purpose.By first The liquid refrigerants of gas-liquid separator 6 is back to compressor 1 using outdoor heat exchanger 4.By above-mentioned design, in air conditioner heat-production Waste heat can not only be made to recycle during operation, and system power dissipation can be reduced, increased air-conditioner system and followed in heating When refrigerant circulation, to promote the heating capacity of whole system.
As an example, second throttling device 7 is provided on bypass line L, and when air conditioner heat-production is run, second section Stream device 7 is used to control the flow of gaseous coolant, you can to adjust the aperture of second throttling device 7 according to actual operating condition In order to neatly control gaseous coolant by amount.When air conditioner refrigeration cycle, second throttling device 7 can be closed, is made It obtains bypass line L and is not involved in refrigeration cycle.
It should be noted that heat exchanger 5 above can be a water tank for filling water can also be it is arbitrary other Suitable form, as long as the refrigerant of 3 upstream and downstream of first throttling device can be made to be exchanged heat.In addition, above-mentioned design Heating capacity can be promoted effectively for heating cycle, and for reducing refrigerating capacity when refrigeration cycle.
As an example, air-conditioner system of the invention further includes mode-changeover device (such as the four-way valve in Fig. 1 Q), the mode-changeover device between refrigeration mode and heating mode for switching air-conditioner system.
As an example, with reference to Fig. 2, Fig. 2 is the structure principle chart of the embodiment two of the air-conditioner system of the present invention.Such as Fig. 2 It is shown, third throttling set 8 is additionally provided in the major loop of air-conditioner system of the invention, which is located at heat In the first pipeline M sections between exchanger 5 and indoor heat exchanger 2.When air conditioner heat-production is run, at third throttling set 8 In full-gear, first throttling device 3 is used for coolant throttle.It is identical as the principle of the air-conditioner system in embodiment one at this time. When air-conditioner system being switched to refrigerating operaton by four-way valve Q, first throttling device 3 is shown in a fully open operation, third throttling dress 8 are set for coolant throttle, simultaneously closes off second throttling device 7.The refrigerant of 5 both sides of heat exchanger is almost without the temperature difference, i.e., warm at this time Exchanger 5 does not play a role during refrigeration cycle, and entire refrigeration cycle is conventional refrigeration cycle.It is made to avoid reducing Refrigerating capacity when cold operation.
Preferably, referring to Figures 1 and 2, compressor 1 is provided with the second gas-liquid separator 11, and the gaseous state into compressor 1 is cold It after matchmaker first passes around second gas-liquid separator 11, then is sucked by compressor 1, to open subsequent cycle.Wherein, bypass line L is connected to the upstream of the second gas-liquid separator 11.
In conclusion heat exchanger is increased in the air-conditioner system of the present invention, and the both sides difference of the heat exchanger It is connected with the first pipeline and the second pipeline, so, the refrigerant in refrigerant and the second pipeline in the first pipeline can be in warm Heat exchange is carried out at exchanger, not only effectively increases the degree of supercooling of the refrigerant in the first pipeline, but also can promote the The evaporation of refrigerant in two pipelines, to improve the heating capacity of system.Also, the first gas-liquid separator of the present invention and compression It is provided with bypass line between machine, compression can be entered by the bypass line by the gaseous coolant of the first gas-liquid separator The air entry of machine, to reduce the pressure loss of this part gaseous coolant in heating recycles, equivalent to increase compressor The pressure of air entry thereby reduces the power consumption of compressor, increases air-conditioner system and is heating refrigerant circulation when recycling, Play the purpose for promoting heating capacity.In addition, the air conditioner of the present invention is also by way of being arranged third throttling set so that air-conditioning Device substitutes first throttling device when being switched to refrigeration mode, using the third throttling set, and (first throttling device is at this time Full-gear) it throttles to refrigerant, the phenomenon that so as to avoid refrigerating capacity is lowered when appearing in refrigeration cycle.
So far, it has been combined preferred embodiment shown in the drawings and describes technical scheme of the present invention, still, this field Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific implementation modes.Without departing from this Under the premise of the principle of invention, those skilled in the art can make the relevant technologies feature equivalent change or replacement, these Technical solution after change or replacement is fallen within protection scope of the present invention.

Claims (10)

1. a kind of air-conditioner system, including the compressor, indoor heat exchanger, first throttling device and the outdoor that are connected in major loop Heat exchanger,
It is characterized in that, being additionally provided with heat exchanger and the first gas-liquid separator in the major loop;
The first pipeline between the side of the heat exchanger and the first throttling device and the indoor heat exchanger is connected, institute The second pipeline stated between the other side of heat exchanger and the first throttling device and the outdoor heat exchanger is connected;
Refrigerant by first pipeline can carry out heat with the refrigerant by second pipeline in the heat exchanger It exchanges;
In the second pipe section of first gas-liquid separator between the heat exchanger and the outdoor heat exchanger, and It is provided with bypass line between first gas-liquid separator and the compressor.
2. air-conditioner system according to claim 1, which is characterized in that be provided with the second throttling dress in the bypass line It sets, when the air-conditioner system heating operation, the second throttling device is used to control the flow of gaseous coolant.
3. air-conditioner system according to claim 1, which is characterized in that first pipeline passes through the heat exchanger Side and/or second pipeline pass through the other side of the heat exchanger.
4. air-conditioner system according to claim 3, which is characterized in that be additionally provided with third throttling dress in the major loop It sets, in the first pipe section of the third throttling set between the heat exchanger and the indoor heat exchanger.
5. air-conditioner system according to claim 4, which is characterized in that when the air-conditioner system heating operation, institute It states third throttling set to be shown in a fully open operation, the first throttling device is used for coolant throttle.
6. air-conditioner system according to claim 4, which is characterized in that when the air-conditioner system refrigerating operaton, institute It states first throttling device to be shown in a fully open operation, the third throttling set is used for coolant throttle.
7. air-conditioner system according to any one of claim 1 to 6, which is characterized in that the compressor is provided with Two gas-liquid separators, refrigerant flow back into after second gas-liquid separator in the compressor.
8. air-conditioner system according to claim 7, which is characterized in that the bypass line is connected to second gas-liquid The upstream of separator.
9. air-conditioner system according to any one of claim 1 to 6, which is characterized in that the air-conditioner system also wraps Mode-changeover device is included, the mode-changeover device between refrigeration mode and heating mode for switching the air conditioner system System.
10. air-conditioner system according to claim 9, which is characterized in that the mode-changeover device is four-way valve.
CN201711471669.9A 2017-12-29 2017-12-29 Air conditioner system Active CN108375255B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201711471669.9A CN108375255B (en) 2017-12-29 2017-12-29 Air conditioner system
PCT/CN2018/115748 WO2019128517A1 (en) 2017-12-29 2018-11-15 Air-conditioner system
EP18894319.5A EP3734199B1 (en) 2017-12-29 2018-11-15 Air-conditioner system
JP2020535567A JP6982692B2 (en) 2017-12-29 2018-11-15 Air conditioner system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711471669.9A CN108375255B (en) 2017-12-29 2017-12-29 Air conditioner system

Publications (2)

Publication Number Publication Date
CN108375255A true CN108375255A (en) 2018-08-07
CN108375255B CN108375255B (en) 2019-12-06

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Country Status (4)

Country Link
EP (1) EP3734199B1 (en)
JP (1) JP6982692B2 (en)
CN (1) CN108375255B (en)
WO (1) WO2019128517A1 (en)

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WO2021120784A1 (en) * 2019-12-20 2021-06-24 青岛海尔空调电子有限公司 Multi-split air conditioning system

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