CN2672527Y - Fixed frequency one draging more air conditioner - Google Patents
Fixed frequency one draging more air conditioner Download PDFInfo
- Publication number
- CN2672527Y CN2672527Y CN 200320113507 CN200320113507U CN2672527Y CN 2672527 Y CN2672527 Y CN 2672527Y CN 200320113507 CN200320113507 CN 200320113507 CN 200320113507 U CN200320113507 U CN 200320113507U CN 2672527 Y CN2672527 Y CN 2672527Y
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- air
- return
- refrigerant
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- oil
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Abstract
The utility model relates to a frequency-fixed air conditioner with a plurality of indoor units, comprising not less than two groups of indoor units and outdoor units. A refrigerant dispenser is provided between each indoor unit and outdoor unit. Between an exhaust pipe of a compressor and an air intake pipe, an oil separator and capillary pipes form one oil-return loop. One by-pass branch loop with an electromagnetic valve is connected in parallel between the entrance of the oil separator and the exit of a refrigerant. An air-return by-pass loop is provided between a liquid container connected with a liquid outlet pipe of the outdoor heat exchanger and an air inlet pipe of an air-liquid separator. A refrigerant dispenser is separated from the outdoor unit with easy installation and easy refrigerant dispensation. Oil-return and by-pass return loop being adopted, the fine oil-return is realized on the premise of little increase of system power consumption, system efficiency and reliability being improved. The air-return by-pass loop with the liquid container is provided to facilitate the matching of volume control and system load.
Description
Technical field
The utility model relates to a kind of air-conditioner, relates in particular to a kind of fixed multi-split air conditioner frequently, belongs to air-conditioning technical field.
Background technology
In recent years, along with China's rapid economy development, people's the growth in the living standard and the improvement of living conditions, real estate obtains fast development.These are progressive, have promoted air conditioner industry one to drag the development of many technology.Present multi-split air conditioner, its outdoor main frame mainly adopts frequency-changeable compressor, digital transfiguration screw compressor and invariable frequency compressor, though it has been ripe technically for frequency conversion and positive displacement compressor technology, the cost height has limited range of application.
Chinese patent 02135237.2, the cold medium controller of fixed-frequency multi-gang air conditioner has proposed refrigerant control system and a kind of combined air conditioners refrigeration system of control combined air conditioners, as shown in Figure 1.The refrigerant flow control part of this system is made up of capillary and the check valve 106 of parallel connection 107 and the electric expansion valve 108 of indoor set 101 of off-premises station 100; System has adopted gas-liquid separator 103, oil eliminator 102, but because oil eliminator 102 will produce bigger resistance, influences the energy consumption of air-conditioning system; Each indoor set 101 of this system is connected with off-premises station 100 all an air valve 104 and liquid valve 105 at the off-premises station place, copper pipe consumption is big, is not easy to install, and limits its wide popularization and application.Chinese patent 00117543.2 discloses a kind of multi-split air conditioner, and its off-premises station adopts multiple compressors parallel connection, every compressor correspondence separately one overlap independently refrigeration system, essence is that a plurality of one drag twos or drag three combination.Chinese patent 02225030.1 has proposed the centralized constant speed multi-split air conditioner of a kind of intelligence, and its scheme that adopts is that a plurality of compressors are formed separately independently refrigeration system, and each system is that one drag two, drags three or one to drag four.The common ground of these two existing systems is oil return problems of not considering compressor lubricant oil, and each system all needs to connect separately copper pipe, and copper pipe consumption is big, is not easy to install.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of efficient and reliability height are provided, and oil return is effective, easy for installation decides the frequency multi-split air conditioner.
For achieving the above object, technical scheme of the present utility model is to provide a kind of fixed multi-split air conditioner frequently, the indoor set and the off-premises station that comprise two groups or more, be provided with refrigerant distributing device between each indoor set and the off-premises station, between the blast pipe of compressor and air intake duct, form an oil return loop by oil eliminator and capillary, bypass branch road that has magnetic valve in parallel is provided with the return-air bypass circulation between the air inlet pipe of reservoir that connects on the drain pipe of outdoor heat exchanger and gas-liquid separator between the inlet of oil eliminator and refrigerant outlet.
Described refrigeration distributor is formed by a plurality of distribution branch road branches, each distribute route refrigerating capillary and check valve parallel branch, heat the electric expansion valve that the parallel branch of capillary and check valve reaches between the two and be in series the number of distribution branch road and the identical and mutual series connection of number of indoor set.
The reservoir, magnetic valve and the capillary that are connected in series between the inlet pipe of described return-air bypass circulation by the drain pipe of outdoor heat exchanger and gas-liquid separator are formed.
The two ends of each indoor set are connected with major loop with branch pipe by branch pipe, refrigerant distribution device respectively.
Compared with prior art, independent from off-premises station refrigerant distributing device, the convenient installation realized the distribution of cold-producing medium easily; Adopt the oil return bypass circulation, under system's power consumption increase prerequisite seldom, realize good oil return, improve the efficient and the reliability of system; The return-air bypass circulation of band reservoir is set, is convenient to carry out the coupling of capacity regulating and system loading; The independent setting of branch pipe and refrigerant distributing device can be carried out freely installing, and embodies characteristic feature.By these technical measures, can guarantee system high efficiency, reliable.
Description of drawings
Fig. 1 is existing a kind of fixed-frequency multi-gang air conditioner;
Fig. 2 is a kind of fixed embodiment 1 of multi-split air conditioner frequently of the utility model;
Fig. 3 is a kind of fixed embodiment 2 of multi-split air conditioner frequently of the utility model;
Fig. 4 is another example that the utility model refrigerant distributor is connected with indoor set.
The specific embodiment
Embodiment 1:
As shown in Figure 2, the fixed multi-split air conditioner frequently of this kind, it comprises: off-premises station 1, indoor set 2, refrigerant distributing device 3, air valve 50, liquid valve 39, branch pipe 49 and tube connector.It is characterized in that described each indoor set (2A, 2B, 2N) has corresponding with it refrigerant distributing device (3A, 3B, 3N); Electric expansion valve 43 among the refrigerant distributing device 3A is used to control the flow of cold-producing medium, and capillary 42,45 is respectively applied for refrigeration and the throttling of cold-producing medium when heating, and the flow direction by check valve 41,44 control cold-producing mediums; Refrigerant distributor is connected with off-premises station by branch pipe 40, liquid valve 39.Described each indoor set (2A, 2B, 2N) comprises indoor heat exchanger 46, indoor fan 47, motor 48, and is connected with off-premises station by branch pipe 49, air valve 50.It comprises described off-premises station 1: compressor 20, blast pipe 21, magnetic valve 24, cross valve 30, outdoor heat exchanger 31, outdoor fan 32, outdoor motor 33, return-air bypass circulation 6, return-air bypass circulation 6 is made up of reservoir 35, magnetic valve 36 and the capillary 37 of serial connection between the inlet pipe 51 of the drain pipe 34 of outdoor heat exchanger 31 and gas-liquid separator 52.
Between the blast pipe 21 of compressor 20 and air intake duct 54, form an oil return loop 4 by oil eliminator 25 and capillary 27 serial connections, formation bypass branch road that has magnetic valve 24 in parallel between the inlet 22 of oil eliminator 25 and refrigerant outlet 28, branch pipe 40,49 and refrigerant distributing device 3A, 3B, 3N can freedom and flexibility install, and are easy to install and maintain.
The fixed multi-split air conditioner frequently of this kind, its operation principle is, during refrigeration, the cold-producing medium that compressor 20 is discharged is got back to compressor through the air intake duct 54 of compressor at last by blast pipe 21, cross valve 30, outdoor heat exchanger 31, reservoir 35, liquid valve 39, branch pipe 40, refrigerant distributing device 3 (refrigerating capillary 42, electric expansion valve 43, check valve 44), indoor set 2, branch pipe 49, air valve 50, the inlet pipe 51 of gas-liquid separator 52, cross valve 30, gas-liquid separator 52.When heating, the cold-producing medium that compressor 20 is discharged is got back to compressor through the air intake duct 54 of compressor at last by blast pipe 21, cross valve 30, pipe 51, air valve 50, branch pipe 49, indoor set 2, refrigerant distributing device 3 (heating capillary 45, electric expansion valve 43, check valve 41), branch pipe 40, liquid valve 39, reservoir 35, outdoor heat exchanger 31, cross valve 30, gas-liquid separator 52.
The fixed multi-split air conditioner frequently of this kind, the oil return of its compressor is controlled by magnetic valve 24.When magnetic valve 24 was in out state, the cold-producing medium that compressor 20 is discharged entered a mouth of cross valve 30 through blast pipe 21, tube connector 23, magnetic valve 24, tube connector 29; When magnetic valve 24 was in off status, the cold-producing medium that compressor 20 is discharged entered a mouth of cross valve 30 through blast pipe 21, tube connector 22, oil eliminator 25, tube connector 28,29.
In oil eliminator 25, the mixture of gaseous refrigerant and lubricating oil is separated into cold-producing medium and lubricating oil, and the cold-producing medium of separating enters a mouth of cross valve 30 through tube connector 28,29; After the refrigerant mixed that goes out pipe 53 of the lubricating oil of separating through tube connector 26, capillary 27 and gas-liquid separator 52, the muffler 54 of process compressor returns compressor 20.
By the switching of control magnetic valve 24, regulate by the cold-producing medium of oil eliminator 25 and the time interval of oil mixture, allowing the mixture of cold-producing medium and lubricating oil directly enter adapter 29 in the interval of delta t 1 sometime by bypass arm 23 and control valve 24; Then, in the time interval Δ t2 that is right after, allow the mixture of cold-producing medium and lubricating oil pass through oil eliminator 25.Like this, shortened the time of the mixture of cold-producing medium and lubricating oil by oil eliminator 25.On the one hand, reduce the resistance that produces at oil eliminator 25 places, reduced the energy consumption of air-conditioner, improved efficiency of air conditioner; On the other hand, because every the time interval of Δ t1, the time interval of the lasting Δ t2 of lubricating oil separates from oil eliminator 25, and the air intake duct 54 of process capillary 27 and compressor is got back to compressor 20, guarantee that compressor can access enough lubricating oil, avoid because of the not enough compressor fault that produces of lubricating oil.
When air-conditioning is in when heating duty or only opening the part indoor set, unnecessary cold-producing medium is stored in the reservoir 35, and open magnetic valve 36, make the cold-producing medium heat absorption in the reservoir 35 after the refrigerant mixed that the d mouth of magnetic valve 36, capillary 37 and cross valve 30 comes after tube connector 51 enters gas-liquid separator, and is returned compressor 20 from air intake duct 54.By return-air bypass circulation 6 is set, can realize the reasonable coupling of capacity regulating and system loading.
Embodiment 2:
Fig. 3 is second embodiment of the present utility model.The difference of Fig. 3 and Fig. 2 is, the branch pipe among Fig. 2 40 has been divided into branch pipe 40A and 40B, and the branch pipe among Fig. 2 49 has been divided into branch pipe 49A and 49B.Be provided with by the independent of refrigerant distributing device 3A, 3B, 3C, can install flexibly according to different customer requirements.The operation principle of present embodiment is identical with Fig. 2, no longer narration.
As shown in Figure 4, this embodiment and the difference of embodiment 1 are being connected of refrigerant distributor and indoor set.In this example, adopted the two-stage branch pipe, at first pass through first order branch pipe 40A from the cold-producing medium of liquid valve 39, be divided into two branch roads, each branch road can be divided into a plurality of branch roads again by second level branch pipe 40B, 40C, only provided the example that is divided into two branch roads among the figure, more branch road can similarly be promoted. Refrigerant distributor 3A, 3B on each branch road, 3C, 3D are corresponding with separately indoor set 2A, 2B, 2C, 2D respectively.Gaseous refrigerant is by secondary branch pipe 49C, 49B, and one-level branch pipe 49A is connected with off-premises station with air valve 50.
Claims (4)
1, a kind of fixed multi-split air conditioner frequently, the indoor set and the off-premises station that comprise two groups or more, it is characterized in that: be provided with refrigerant distributing device between each indoor set and the off-premises station, between the blast pipe of compressor and air intake duct, form an oil return loop by oil eliminator and capillary, bypass branch road that has magnetic valve in parallel is provided with the return-air bypass circulation between the air inlet pipe of reservoir that connects on the drain pipe of outdoor heat exchanger and gas-liquid separator between the inlet of oil eliminator and refrigerant outlet.
2, air-conditioner according to claim 1, it is characterized in that: described refrigeration distributor is formed by a plurality of distribution branch road branches, each distribute route refrigerating capillary and check valve parallel branch, heat the electric expansion valve that the parallel branch of capillary and check valve reaches between the two and be in series the number of distribution branch road and the identical and mutual series connection of number of indoor set.
3, air-conditioner according to claim 1 and 2 is characterized in that: the reservoir, magnetic valve and the capillary that are connected in series between the inlet pipe of described return-air bypass circulation by the drain pipe of outdoor heat exchanger and gas-liquid separator are formed.
4, air-conditioner according to claim 1 and 2 is characterized in that: the two ends of each indoor set are connected with major loop with branch pipe by branch pipe, refrigerant distribution device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113507 CN2672527Y (en) | 2003-12-22 | 2003-12-22 | Fixed frequency one draging more air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113507 CN2672527Y (en) | 2003-12-22 | 2003-12-22 | Fixed frequency one draging more air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672527Y true CN2672527Y (en) | 2005-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320113507 Expired - Lifetime CN2672527Y (en) | 2003-12-22 | 2003-12-22 | Fixed frequency one draging more air conditioner |
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| CN (1) | CN2672527Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102165272A (en) * | 2009-03-30 | 2011-08-24 | 三菱重工业株式会社 | Multiple air conditioner |
| CN101749899B (en) * | 2008-12-20 | 2012-06-27 | 珠海格力电器股份有限公司 | Air-conditioner matching device |
| CN106247702A (en) * | 2016-09-12 | 2016-12-21 | 珠海格力电器股份有限公司 | Branching box and multiple on-line system |
| CN106766424A (en) * | 2017-01-13 | 2017-05-31 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN112178968A (en) * | 2020-09-29 | 2021-01-05 | 武汉万居隆电器有限公司 | High-efficient air heater with one drags two functions |
| CN114294712A (en) * | 2020-09-21 | 2022-04-08 | 海信（山东）空调有限公司 | Multi-connected air conditioning system |
| CN114294713A (en) * | 2020-09-21 | 2022-04-08 | 海信（山东）空调有限公司 | Multi-connected air conditioning system |
-
2003
- 2003-12-22 CN CN 200320113507 patent/CN2672527Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749899B (en) * | 2008-12-20 | 2012-06-27 | 珠海格力电器股份有限公司 | Air-conditioner matching device |
| CN102165272A (en) * | 2009-03-30 | 2011-08-24 | 三菱重工业株式会社 | Multiple air conditioner |
| CN102165272B (en) * | 2009-03-30 | 2014-10-29 | 三菱重工业株式会社 | Multiple air conditioner |
| CN106247702A (en) * | 2016-09-12 | 2016-12-21 | 珠海格力电器股份有限公司 | Branching box and multiple on-line system |
| CN106247702B (en) * | 2016-09-12 | 2018-08-10 | 珠海格力电器股份有限公司 | Branching box and multi-line system |
| CN106766424A (en) * | 2017-01-13 | 2017-05-31 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN114294712A (en) * | 2020-09-21 | 2022-04-08 | 海信（山东）空调有限公司 | Multi-connected air conditioning system |
| CN114294713A (en) * | 2020-09-21 | 2022-04-08 | 海信（山东）空调有限公司 | Multi-connected air conditioning system |
| CN112178968A (en) * | 2020-09-29 | 2021-01-05 | 武汉万居隆电器有限公司 | High-efficient air heater with one drags two functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131222 Granted publication date: 20050119 |