阅读说明：本技术 空气调节器 (Air regulator ) 是由 F·比藤斯 P·皮尔梅茲 J·瓦诺泰格赫姆 于 2016-10-06 设计创作，主要内容包括：空气调节器用于调节建筑物(70)内部的空间(72),包括热源单元(30)和至少一个室内单元(50)。热源单元(30)具有热交换器单元(31)和压缩机单元(32)。热交换器单元(31)包括设置于第一壳体(2)的第一热交换器(5)并构造成与热源交换热量。压缩机单元(32)包括设置于与第一壳体分离的第二壳体(44)的压缩机(37),热交换器单元与压缩机单元经由第一液体制冷剂管道(78)和第一气体制冷剂管道(76)流体连接。至少一个室内单元(50)具有第二热交换器(53),构造成与待调节的空间交换热量并经由第二液体制冷剂管道(79)和第二气体制冷剂管道(77)而与热交换器单元和/或压缩机单元流体连通。第一液体制冷剂管道的外径比第二液体制冷剂管道的外径大和/或第一气体制冷剂管道的外径比第二气体制冷剂管道的外径大。(Air regulator is used to adjust the internal space (72) of building (70), including heat source unit (30) and at least one indoor unit (50).Heat source unit (30) has heat exchanger unit (31) and compressor unit (32).Heat exchanger unit (31) includes being set to the first heat exchanger (5) of first shell (2) and being configured to exchange heat with heat source.Compressor unit (32) includes that the compressor (37) for being set to the second shell (44) separated with first shell, heat exchanger unit and compressor unit are fluidly connected via the first liquid refrigerant pipeline (78) and first gas refrigerant tubing (76).At least one indoor unit (50) has second heat exchanger (53), is configured to exchange heat with space to be regulated and be in fluid communication via second liquid refrigerant tubing (79) and second gas refrigerant tubing (77) with heat exchanger unit and/or compressor unit.The outer diameter of first liquid refrigerant pipeline is bigger than the outer diameter of second liquid refrigerant tubing and/or the outer diameter of first gas refrigerant tubing is bigger than the outer diameter of second gas refrigerant tubing.)

1. a kind of air regulator is adjusted for the space (72) internal to building (70), comprising:

Heat source unit (30), the heat source unit (30) have heat exchanger unit (31) and compressor unit (32), wherein institute State the first heat exchanger (5) of heat exchanger unit (31) including being set to first shell (2), and the heat exchanger unit (31) it is configured to exchange heat with heat source, the compressor unit (32) includes being set to second separated with the first shell The compressor (37) of shell (44), the heat exchanger unit and the compressor unit are via the first liquid refrigerant pipeline (78) and/or first gas refrigerant tubing (76) and be fluidly connected；And

At least one indoor unit (50), at least one described indoor unit (50) have second heat exchanger (53), and described the Two heat exchangers (53) are configured to exchange heat with space to be regulated, and via second liquid refrigerant tubing (79) and second Gas refrigerant pipeline (77) and with the compressor unit be in fluid communication,

It is characterized in that,

The outer diameter of the first liquid refrigerant pipeline is bigger than the outer diameter of the second liquid refrigerant tubing, and/or is institute The outer diameter for stating first gas refrigerant tubing is bigger than the outer diameter of the second gas refrigerant tubing.

2. air regulator as described in claim 1, which is characterized in that

The outer diameter of the first liquid refrigerant pipeline (78) is bigger by 30% than the outer diameter of the second liquid refrigerant tubing (79) To 70%.

3. air regulator as claimed in claim 1 or 2, which is characterized in that

The outer diameter of the first gas refrigerant tubing (76) is bigger by 15% than the outer diameter of the second gas refrigerant tubing (77) To 45%.

[technical field]

The present invention relates to the air regulators being adjusted for the space to interior of building, and in particular to using external Air regulator of the air as heat source.This air regulator is referred to as air heat pump.In addition, air regulator can be with For space to be regulated to be freezed and/or is heated.More particularly it relates to the air conditioning with heat source unit Device, above-mentioned heat source unit include heat exchanger unit and compressor unit, wherein above-mentioned heat exchanger unit has heat exchange Device, above-mentioned compressor unit have compressor, and heat exchanger is contained in the first shell of heat exchanger unit, and compressor displacement It is contained in the second shell of compressor unit.

[background technique]

In general, air regulator is by the one or more outdoor units connected by refrigerant tubing and one or more A indoor unit composition, above-mentioned refrigerant tubing limit refrigerant circuit.Outdoor unit and indoor unit respectively include hot friendship On the one hand parallel operation, above-mentioned heat exchanger are used to exchange heat with heat source, on the other hand for exchanging heat with space to be regulated. In most cases, the outdoor unit of air regulator is mounted on outside building, such as is mounted on roof or on facade. However, this is in some cases, it is considered unfavorable from the perspective of aesthetic.Therefore, EP2108897A1 proposition will be outdoor single Member is integrated into the ceiling of building, so that outdoor unit to be hidden in ceiling, without the external quilt from building It notices.

[reference listing]

[patent document]

[patent document 1]

EP2108897A1

But the outdoor unit proposed in this article has some disadvantages.One is negatively making an uproar for outdoor unit generation Sound may allow the people of interior of building to feel to bother.Second is negatively installation and maintenance, because outdoor unit is relatively heavy, And its structure needs the relatively large installation space for its height.

In order to solve this technical problem, as shown in Figure 1, present inventors have proposed one kind for such as interior of building Room etc the air regulator that is adjusted of space, above-mentioned air regulator includes heat source unit 30.It is being embodied In mode, heat source unit 30 uses outside air (that is, air outside building) as heat source.In the prior art document, Heat source unit 30 is generally defined as the outdoor unit of air regulator.Heat source unit has (the heat source heat of heat exchanger unit 31 Exchanger unit), above-mentioned heat exchanger unit 31 includes first heat exchanger (heat exchanger of heat source) 5 and first shell 2.First Heat exchanger 5 is set to first shell 2, and is configured to carry out heat exchange with heat source, specifically, carrying out hot friendship with outside air It changes.In addition, heat source unit 30 includes compressor unit 32.Compressor unit 32 has compressor 37 and second shell 44, above-mentioned Second shell 44 is separated with first shell 2.Herein, " separation " refers to that shell shows as isolated component or unit, not Including configuring a shell in another shell.Compressor 37 is configured at second shell 44.First heat exchanger 5 and compression Machine 37 is connected by refrigerant tubing.For this purpose, being provided with the first system in each of compressor unit 32 and heat source unit 31 Cryogen conduit coupling 34,35 and second refrigerant conduit coupling 42,43.Preferably, the first refrigerant pipe pipe connecting It respectively can the access outside first shell and/or second shell with second refrigerant conduit coupling.In addition, air regulator is also Including at least one indoor unit 50, which has a second heat exchanger 53, the second heat exchanger 53 be configured to Space to be regulated carries out heat exchange, or more specifically, carries out heat exchange with the air in the space.Second heat exchanger 53 Also it is fluidly connected to heat exchanger unit 31 and/or compressor unit 32.This can also be by refrigerant tubing and by third system Cryogen conduit coupling 46,47 and the 4th refrigerant pipe pipe connecting 54,55 are set to indoor unit 50 and compressor unit 32 And it is achieved.Specifically, indoor heat exchanger 53 and 5 use of heat exchanger of heat source have above-mentioned refrigerant pipe pipe connecting 34,43,46,54, and be connected by liquid refrigerant pipeline 78,79,49 via compressor unit 32.However, Indoor Thermal Exchanger 53 also can be used refrigerant tubing with heat exchanger of heat source 5 and connect 34,54, and pass through a liquid refrigerant pipeline Directly it is connected.In addition, indoor heat exchanger 53 and heat exchanger of heat source 5 are connected respectively to the compressor of compressor unit 32 37, specifically, being connected to the four-way valve 39 being contained in compressor 37 by gas refrigerant pipeline 76,77 respectively.According to Above-mentioned air regulator, heat exchanger unit 31 can be only fitted to interior of building, and be fluidly connected to outside building.Specifically For, as described above, heat exchanger unit 31 sucks outside air, and the air that will be heated/cooled down by first heat exchanger It is discharged to the outside.Compressor unit 32 can be in turn positioned at the internal or external of building.

Since heat source unit 30 is divided into heat exchanger unit 31 and compressor unit 32, each shell can be with It is optimized for size and sound insulation.In addition, segmentation allows the positioning of two units different, wherein heat source unit can be with Be not configured at being limited by any noise building ceiling or wall and be hidden, to meet esthetic requirement.Meanwhile it not wrapping Include the weight saving of the heat exchanger unit of compressor.Therefore, the installation and maintenance of ceiling are improved.Compressor unit can To be installed on the position of not noise problem in turn, and due to its weight, it is preferably placed at more lower than heat exchanger unit At height, it is more preferably located on floor.In addition, compared with the outdoor unit of the prior art for further including first heat exchanger, pressure Contracting machine unit it is smaller, therefore, compressor unit can even be configured at external without influencing aesthetic appearance.By compressor The additional advantage that unit is separated with heat exchanger unit is: can be to avoid the noise from compressor usually by through over-heat-exchanger The air of unit is carried secretly and is transmitted to space to be regulated, thus the people in interference space.

However, a problem relevant to this system is, since heat exchanger of heat source and indoor heat exchanger are via pressure Contracting machine unit and be connected and above-mentioned outdoor unit is divided into heat source unit 31 and compressor unit 32, therefore, by heat source The length for the pipeline 76,78 that heat exchanger is connect with indoor heat exchanger and heat exchanger of heat source with compressor increases, and causes The pressure drop of pipeline during operating is relatively high.Specifically, if air regulator is for space system to be regulated It is operated under the heating mode of heat, then in the sucking gas refrigerant pipeline for connecting heat source unit with compressor unit (in attached drawing 78) in, the suction side more particularly, in compressor and heat exchanger of heat source, there are huge crushings.If air regulator It operates, is then connecting heat source unit with compressor unit under the refrigeration mode for freezing to space to be regulated There are huge crushings in liquid refrigerant pipeline.In some cases, pressure drop can be compensated by compressor.This compensation As a result, needing to mend higher power consumption and increased discharge overheat by heat exchanger of heat source in refrigeration operation It repays.Thus, efficiency and the power decline of system.

In order to overcome this disadvantage, the present inventor propose to be incorporated to cool-heat-exchanger 86 sub-cooling unit, so as to Additional supercooling is generated in pipeline between compressor unit 32 and heat exchanger unit 31.As shown in Figure 1, refrigerant tubing 82 Refrigerant circuit is connected at the position 81 of 38 upstream of reservoir (between four-way valve 39 and reservoir 38).It is cut being provided with Only at the compressor unit 32 of valve 45, it is additionally provided with the 5th refrigerant pipe pipe connecting 83.5th gas refrigerant pipeline 85 connects Another refrigerant pipe pipe connecting 84 for being connected to refrigerant pipe pipe connecting 83 and being arranged at heat exchanger unit 31.Heat exchange Refrigerant tubing 89 in the shell 2 of device unit 31 is connected to refrigerant pipe pipe connecting 84, passes through cool-heat-exchanger 86, mistake After cold expansion valve 87, it is connected to refrigerant tubing 90, the first refrigerant pipe pipe connecting 34 is connect with main expansion valve 33.Cause And due to achieving additional supercooling, cooling power loss can be reduced.But in order to avoid this cooling power is lost, It needs during installation to include the extra ducts work within pipeline 82,85,89 and associated conduit system.In addition, above system It also needed cool-heat-exchanger 86, expansion valve 87 and controller was incorporated in the system for being used to control subcooling process.Therefore, this Kind countermeasure increases the cost of air regulator, keeps it more complicated.

[summary of the invention]

Therefore, it is an object of the present invention to improve the air tune with heat source unit as described above and compressor unit The efficiency and power for saving device, avoid additional pipeline and installment work.

This purpose is realized by theme defined by technical solution 1.Embodiments of the present invention dependent claims, It is proposed in description below and attached drawing.

According on one side, the air regulator that the space for room to such as interior of building etc is adjusted Including heat source unit.In a specific embodiment, heat source unit uses outside air (air i.e. outside building) as heat Source.In the prior art document, heat source unit is generally defined as the outdoor unit of air regulator.There is heat source unit heat to hand over Exchange unit (heat exchanger of heat source unit), above-mentioned heat exchanger unit include first heat exchanger (heat exchanger of heat source) and One shell.First heat exchanger is set to first shell, and is configured to carry out heat exchange with heat source, specifically, with outside sky Gas carries out heat exchange.For this reason, it is preferred that first shell has the first connector in the side of heat exchanger, in heat exchanger Opposite side have the second connector.Preferably, the first connector and the second connector are connected to the outside with building The piping of fluid communication allows outside air by first heat exchanger.In addition, heat source unit includes compressor unit. Compressor unit has compressor and second shell, and above-mentioned second shell is separated with first shell.Herein, " separation " refers to Shell shows as isolated component or unit, does not include configuring a shell in another shell.Compressor is configured at Second shell.Heat exchanger unit (specifically, first heat exchanger) passes through with compressor unit (specifically, compressor) Refrigerant tubing and be connected, specifically, by the first liquid refrigerant pipeline and/or first gas refrigerant tubing by Connection.In addition, air regulator further includes at least one indoor unit, which has second heat exchanger (Indoor Thermal Exchanger), which is configured to carry out heat exchange with space to be regulated, or more specifically, in the space Air carry out heat exchange.Indoor heat exchanger is also by refrigerant tubing, specifically, passing through second liquid refrigerant tubing Heat exchanger unit (specifically, first heat exchanger) and compressor list are fluidly connected to second gas refrigerant tubing First (specifically, compressor).In order to make second heat exchanger, first heat exchanger and compressor fluid connection, the first system Cryogen conduit coupling and second refrigerant conduit coupling are set to each of compressor unit and heat exchanger unit, And third refrigerant pipe pipe connecting and the 4th refrigerant pipe pipe connecting are set to compressor unit and heat exchanger unit Each of.In a specific embodiment, the first liquid refrigerant pipeline is connected to compressor unit and heat exchanger unit Second refrigerant conduit coupling, and first gas refrigerant tubing is connected to compressor unit and heat exchanger unit First refrigerant pipe pipe connecting.Second liquid refrigerant tubing is connected to the third refrigerant of compressor unit and indoor unit Conduit coupling, and second gas refrigerant tubing is connected to compressor unit and the 4th refrigerant tubing of indoor unit connects Fitting.In addition, the second refrigerant conduit coupling and third refrigerant pipe pipe connecting of compressor unit can pass through connection Refrigerant tubing and be connected in second shell, wherein heat exchanger unit is via the first liquid refrigerant pipeline, second shell Interior connection refrigerant tubing and second liquid refrigerant tubing and be connected to indoor unit.But such as preface part institute It states, heat exchanger of heat source also can be used a liquid refrigerant pipeline and be directly connected to indoor heat exchanger.In such case Under, it will be not present the first liquid refrigerant pipeline and second liquid refrigerant tubing, and only one is directly by heat exchanger list The liquid refrigerant pipeline that member is connect with indoor unit.According to the present invention, the outer diameter of the first liquid refrigerant pipeline is than the second liquid The outer diameter of cryogen pipeline is big and/or the outer diameter of first gas refrigerant tubing than second gas refrigerant tubing outer diameter Greatly.Herein, it is emphasized that, in the case where multiple indoor units are connected to system, above-mentioned outer diameter refers to connecting To the main liquid refrigerant pipeline of multiple indoor units and the outer diameter of main gas refrigerant pipeline.More specifically, main liquid system Cryogen pipeline and main gas refrigerant pipeline are connected to refrigerant circuit (compressor and heat exchanger of heat source as described above), and And main refrigerant pipeline is connected to multiple indoor units by multiple branch pipe(tube)s.For calculated diameter increase, main refrigerant is selected The outer diameter of pipeline.Compared with (cooling) power of the heat source unit of the air regulator for the diameter being typically chosen, by compared to Second liquid refrigerant tubing increases the outer diameter of the first liquid refrigerant pipeline, to be avoided that the loss of cooling power.With one As (cooling) power of the heat source unit of the air regulator of diameter for selecting compare, by compared to second gas refrigerant pipe Road increases the outlet diameter of first gas refrigerant tubing, to be avoided that the loss of heats power.Therefore, the present invention provides A kind of air regulator for not needing additional pipeline work, installation and other refrigerant components and there is the efficiency improved. Such as in the case where heat exchanger of heat source is directly connected to indoor heat exchanger, it is directly connected to due to passing through, liquid refrigerant The length of pipeline is able to maintain shorter, therefore, there is no need to the diameter for increasing liquid refrigerant pipeline.Therefore, in such implementation In mode, it can be envisaged that only increase the diameter of gas refrigerant pipeline.

Preferably, the outer diameter of the first liquid refrigerant pipeline bigger than the outer diameter of second liquid refrigerant tubing 30% to 70%.Herein, lower limit is actually and is determined by available line size in the market, and meet DIN EN The specification of 12735-1:2010 (E).The upper limit is selected because of technical reason.Further increase size and may cause need be The control of the key liquids refrigerant of system.More specifically, it if outer diameter increases to above 70%, needs more to make in system Cryogen.As a result, the refrigerant control of system is more difficult, when switching especially between refrigeration and heating operation.It is another It is a the disadvantage is that further increasing size can have a negative impact to cost, since it is desired that more refrigerants.

According to another embodiment, the outer diameter of first gas refrigerant tubing is bigger than the outer diameter of second gas refrigerant tubing 15% to 45%.Herein, increased lower limit is also to be determined by available line size, and meet DIN EN The specification of 12735-1:2010 (E), and the upper limit is to carry out selection for technical reason.If diameter increases to above 45%, The problem of cannot reliably returning to compressor there may be the oil of entrainment in the refrigerant.Specifically, if outer diameter increase too More, then the mobility of refrigerant reduces, and oil will not be carried secretly by refrigerant again.Therefore, oil stays in the duct without returning To compressor to be lubricated to it.

Preferably, first pipe size is selected to be used to for indoor unit connecting with compressor unit in Pipe installing person, And select in installation process of the different and bigger second pipe sizes for compressor unit to be connect with heat exchanger unit, Increase diameter at the scene of air regulator.

The other feature and effect of heat source unit can be obtained from being described below of embodiment.Referring to attached drawing, to these Embodiment is described.

[Detailed description of the invention]

Fig. 1 shows the air regulators according to the first aspect developed by the present inventor but do not covered by claims Signal circuit diagram,

Fig. 2 indicates the circuit diagram of the signal of the air regulator of embodiment according to the present invention.

[specific embodiment]

The circuit diagram of Fig. 2 expression air regulator.Air regulator has heat source unit 30, and above-mentioned heat source unit 30 includes Heat exchanger unit 31 and compressor unit 32.

Heat exchanger unit 31 includes heat exchanger 5 (first heat exchanger), and above-mentioned heat exchanger 5 is by parallel connected Heat exchanger element 6 and lower heat exchanger element 7 are constituted.Heat exchanger unit 31 further includes the main expansion valve of refrigerant circuit 33。

Heat exchanger unit 31 includes shell 2 (first shell), and above-mentioned shell 2 is configured for being connected to air conditioning The outside air of device is piped.Specifically, heat exchanger unit is configured to " outdoor " unit of air regulator, but it is above-mentioned " outdoor " unit is configured at interior of building, specifically, being configured in the ceiling of building.Therefore, it is provided in shell 2 First connector, above-mentioned first connector for being connected to air line, above-mentioned air line by heat exchanger unit 31 with build The external connection of object is built, making it possible to will be in outdoor air suction casing 2.It is configured with connector in the opposite end of shell 2, on It states connector to be arranged for heat exchanger unit 31 again connecting to the air line led to outside building, make it possible to Air after over-heat-exchanger 5 is discharged to the outside.

Shell 2 has the first refrigerant pipe pipe connecting 34 and second refrigerant conduit coupling 35, above-mentioned first refrigeration Agent conduit coupling 34 and second refrigerant conduit coupling 35 are used to heat exchanger unit 31 being connected to refrigerant circuit Refrigerant tubing.

Compressor unit 32 has shell 44 (second shell).Compressor 37 is configured at shell 44 (second shell).In addition, It is described below and assumes that all other component of existing compressor unit will also be configured at shell 44.In addition, compressor list Member may include optional reservoir 38 and four-way valve 39.Compressor unit 32 further includes 42 He of the first refrigerant pipe pipe connecting Second refrigerant conduit coupling 43.

Shut-off valve 45 (two shut-off valves, each connector 42,43 each one) can be set into respectively close to the first refrigeration Agent conduit coupling 42 and second refrigerant conduit coupling 43.

In addition, third refrigerant pipe pipe connecting 46 and the 4th refrigerant pipe pipe connecting 47 are arranged for connection one Or multiple indoor units 50 (being in the present embodiment one), above-mentioned indoor unit 50 is configured to and space fluid to be regulated Connection.Shut-off valve 48 (two shut-off valves, each connector 46,47 each one) also can be set into respectively close to refrigerant tubing Connector 46,47.

In addition, refrigerant tubing 80 (second refrigerant pipeline) connects refrigerant pipe pipe connecting 42 and refrigerant tubing Part 47 is connect with the four-way valve 39 of successively intercalation, compressor 37, optional reservoir 38 and four-way valve 39.

In view of refrigeration operation (solid arrow in Fig. 2), above-mentioned component is from refrigerant pipe pipe connecting 47 to refrigerant Conduit coupling 42 configures in the following order: refrigerant pipe pipe connecting 47, four-way valve 39, reservoir 38, compressor 37, four-way Valve 39 and refrigerant pipe pipe connecting 42.In view of refrigeration operation (dotted arrow in Fig. 1), above-mentioned component is from refrigerant pipe Pipe connecting 42 is configured in the following order to refrigerant pipe pipe connecting 47: refrigerant pipe pipe connecting 42, four-way valve 39, optional Reservoir 38, compressor 37, four-way valve 39 and refrigerant pipe pipe connecting 47.

In addition, refrigerant pipe pipe connecting 43 is connect by refrigerant tubing (connection refrigerant tubing) 49 with refrigerant tubing Part 46 connects.Reservoir 38 (reservoir 38 preferably sucks reservoir) connect by refrigerant tubing 51 with four-way valve 39.

The example of indoor unit 50 includes indoor heat exchanger 53 (second heat exchanger), and above-mentioned indoor heat exchanger 53 passes through The third refrigeration of compressor unit 32 is connected respectively to by refrigerant pipe pipe connecting 54,55 and refrigerant tubing (seeing below) Agent conduit coupling 46 and the 4th refrigerant pipe pipe connecting 47.Optionally, indoor unit 50 may include indoor expansion valve 56, The above-mentioned configuration of indoor expansion valve 56 is between indoor heat exchanger 53 and refrigerant pipe pipe connecting 54.Indoor unit 50 is in principle It can be configured for the common indoor unit of this air regulator.

Heat exchanger unit 31 uses refrigerant pipe pipe connecting 34,35 and 43,42 respectively, and passes through gas refrigerant pipe Road 76 and liquid refrigerant pipeline 78 are connected to compressor unit 32.Compressor unit 32 uses refrigerant pipe pipe connecting respectively 46,47 and 54,55, indoor unit 50 is again connected to via gas refrigerant pipeline 77 and liquid refrigerant pipeline 79.More For body, heat exchanger of heat source 5 connects via refrigerant pipe pipe connecting 34, the first liquid refrigerant pipeline 78, refrigerant tubing Fitting 43, connection refrigerant tubing 49, refrigerant pipe pipe connecting 46, second liquid refrigerant tubing 79 and refrigerant tubing Connector 54 and be connected to indoor heat exchanger 53.On the other hand, heat exchanger of heat source 5 is via refrigerant pipe pipe connecting 35, first gas refrigerant tubing 76 and refrigerant pipe pipe connecting 42 and be connected to four-way valve 39, indoor heat exchanger 53 are connected to via refrigerant pipe pipe connecting 55, second gas refrigerant tubing 77 and refrigerant pipe pipe connecting 47 Four-way valve 39.

The operating of air regulator as described above is as follows.(solid arrow in Fig. 1), refrigerant during refrigeration operation Compressor unit 32 is flowed at refrigerant pipe pipe connecting 47, and is flowed through four-way valve 39 and be introduced into reservoir 38.When flowing through When reservoir, the liquid refrigerant at interflow is separated from gas refrigerant, and liquid refrigerant is temporarily stored in reservoir 38.

Then, gas refrigerant is introduced into compressor 37 and is compressed.Compressed refrigerant connects via refrigerant tubing Fitting 42,35 and gas refrigerant pipeline 76 and be introduced into heat exchanger unit 31.Refrigerant flows through heat exchanger unit 31 Heat exchanger 5 with plate 6,7, whereby, refrigerant are condensed (heat exchanger 5 works as condenser).Therefore, heat passes It is delivered to the outside air for flowing through the heat exchanger element 6,7 of heat exchanger 5 in parallel.Expansion valve 33 fully opens, to avoid system High pressure drop between cold period.Later, refrigerant flows into pressure via refrigerant pipe pipe connecting 34,43 and liquid refrigerant pipeline 78 Contracting machine unit 32.In compressor unit 32, refrigerant flows through connection refrigerant tubing 49, and via refrigerant pipe pipe connecting 46, second liquid refrigerant tubing 79 and third refrigerant connector 54 introduce indoor unit 50, specifically, introducing indoor The heat exchanger 53 of unit 50.Later, refrigerant is further expanded by indoor expansion valve 56, and to space 72 to be regulated Carry out evaporation in cooling heat exchanger 53 (heat exchanger 53 works as evaporator).Therefore, heat is from space to be regulated In air be transmitted to the refrigerant for flowing through heat exchanger 53.Finally, refrigerant via refrigerant pipe pipe connecting 55,47 and on It states gas refrigerant pipeline 77 and is introduced back into compressor unit 32.In compressor unit 32, refrigerant first flows through four-way valve 39, reservoir 38 is flowed into later.

During heating, above-mentioned circuit reversion, wherein heating is indicated by the dotted arrow in Fig. 1.Phase on process principle Together.But during heating, first heat exchanger 5 works as evaporator, and second heat exchanger 53 rises as condenser Effect.Specifically, refrigerant passes through first gas refrigerant tubing 76 and is introduced into pressure via refrigerant pipe pipe connecting 42 Contracting machine unit 32, and flowing into four-way valve 39 and flowing through refrigerant tubing connector 47,55 and second gas refrigerant tubing 77 And indoor unit 50 is flowed into, specifically flow into the (indoor heat exchanger 53 of indoor heat exchanger 53 condensed to refrigerant Work as condenser) before, reservoir 38 is flowed into via four-way valve 39, is then compressed in compressor 37.Then, it makes Cryogen is expanded by expansion valve 56, again via refrigerant pipe pipe connecting 54,46 and second liquid refrigerant tubing 79 later Compressor unit 32 is introduced, at above-mentioned compressor unit 32, refrigerant flows into connection refrigerant tubing 49.

Then, refrigerant is via 78 inflow heat exchanger list of refrigerant pipe pipe connecting 43,34 and the first liquid refrigerant pipeline Member 31.Refrigerant is being reintroduced back to compressor list via refrigerant pipe pipe connecting 35,42 and first gas refrigerant tubing 76 Before member 32, further expanded by the main expansion valve 33 in heat exchanger unit 31, then in 5 (heat exchange of heat exchanger Device 5 works as evaporator) in evaporation.

Due to the segmentation of compressor unit 32 and heat exchanger unit 31, compressor unit 32 be may be mounted to noise not Sensitive region, so that even if indoors, the noise jamming as caused by compressor is also not present in configuration.In addition, compressor unit 32 shell 44 can sound insulation well.Further, since the separation idea between heat exchanger unit 31 and compressor unit 32, Therefore, flowing through does not have compressor noise in the air of heat exchanger unit 31, above-mentioned noise can be passed to sky to be regulated Between in.

Since the Unit Weight of heat exchanger unit 31 and compressor unit 32 is lower, installation is improved. In addition, compressor unit 32 may be mounted on floor, without lifting heavier compressor module.Due to compressor list The occupied area (width and depth) of member 32 is relatively small, and the shell of compressor unit 32, specifically compressor unit 32 The height of body 44 is lower, and therefore, when being arranged in inside room to be regulated, compressor unit 32 can even be hidden in all Such as cabinet or under-counter.

Heat exchanger unit 31 also has the advantages that noiseless interference.Since compressor is not included in heat exchanger unit 31 In, therefore, it can be entrained the noise that unique sound in the gas flow is fan, thus drastically reduce the noise in air-flow. In addition, shell can be completely enclosed in space 72 to be regulated, so that being transmitted in above-mentioned space without sound.The shell It can sound insulation well.Since the height of heat exchanger unit 31 is lower, it is easy heat exchanger unit 31 being hidden in example In ceiling.Therefore, unit 31 not visible from outside.Due to weighing compared with the unit in same housing with compressor Amount is lighter, and therefore, installation is also improved.

In general, selecting gas refrigerant pipeline and liquid system according to the power of " outdoor unit " as heat source unit 30 The outer diameter tube of cryogen pipeline.In addition, outer diameter tube is controlled by available pipe diameter in the market, and meet relevant rule Model, DIN EN 12735-1:2010 (E) differentiation at present has metric system and inch series, and determines the outer diameter of corresponding pipeline.Its result It is since specification pertains only to outer diameter, but the wall thickness of pipeline to be defined, so that internal diameter is limited indirectly, therefore, as relevant portion Internal diameter of the pipeline be indirect selections.Following table incites somebody to action the related power of usually (normal or standard) outer diameter tube size and heat source unit It is corresponding.

According to the present invention, first gas refrigerant tubing 76 and/or the first liquid refrigerant pipeline 78 have than institute in table The big outer diameter of the above-mentioned normal outer diameter shown.Herein, it is preferred that the outer diameter of first gas refrigerant tubing 76 is than upper table institute The outer diameter of the normal outer diameter big 15% to 45% and/or the first liquid refrigerant pipeline 78 that show is than normal outer diameter shown in upper table Big 30% to 70%.Therefore, with the power according to heat source unit, relative to first gas refrigerant tubing shown in upper table and The nominal outer diameter of one liquid refrigerant pipeline (is such as weighed come the second gas refrigerant tubing and second liquid refrigerant tubing determined Described in sharp claim) it compares, the present invention can optionally determine first gas refrigerant tubing and the first liquid refrigerant pipe The Outer Tube diameter in road.

In the present embodiment, the outer diameter of second gas refrigerant tubing 77 and second liquid refrigerant tubing 79 is according to upper The nominal outer diameter size that provides in table selects.Therefore, with second gas refrigerant tubing 77 and second liquid refrigerant tubing 79 compare, the outer diameter of first gas refrigerant tubing 76 and the first liquid refrigerant pipeline 78 also increase 15% to 45% and 30% to 70%.Herein, it is emphasized that, in the case where multiple indoor units are connected to system, above-mentioned outer diameter refers to The main liquid refrigerant pipeline for being attached to multiple indoor units and main gas refrigerant pipeline outer diameter.In general, main Liquid refrigerant pipeline and main gas refrigerant pipeline are connected to refrigerant circuit (compressor and heat exchanger of heat source), and more Main refrigerant pipeline is connected to multiple indoor units by a branch pipe(tube).For calculated diameter increase, main refrigerant pipeline is selected Outer diameter.

The upper limit for providing 45% is because further increasing for outer diameter will lead to entrained oil in refrigerant and can stay in system In without return to compressor the problem of.15% lower limit is to be determined according to above-mentioned specification by available pipeline in the market 's.

The upper limit for providing 70% is because bigger outer diameter will lead to the control problem of liquid refrigerant in system and 30% Lower limit determined by available pipeline in the market also according to above-mentioned specification.

In the specific example of the heat source unit 31 with 5kW power, the outer diameter of second gas refrigerant tubing 77 is 15.9mm, the outer diameter of second liquid refrigerant tubing 79 are 9.5mm.According to the present invention, first gas refrigerant tubing 76 is outer Diameter is between 18.285mm to 23.055mm, and is in a specific embodiment 19.1mm.Therefore, The outer diameter of one liquid refrigerant pipeline 78 is between 12.35mm to 16.15mm, and in a specific embodiment party It is 12.7mm in formula.

By the diameter of increase gas refrigerant pipeline, the loss of the heats power of air regulator can be avoided, and increase The diameter of liquid feeding state refrigerant tubing then avoids the loss of air conditioner refrigeration work consumption.With the introduction of the application relative to Fig. 1 The separation scheme limited in part is compared, and not additional pipeline 82,85,89 does not need the additional installment work of pipeline, not yet Need such as supercooling heat exchanger 86 and supercooling electric expansion valve 87 etc other refrigerant components and additional control Software processed.Unique measure is Pipe installing person is at the scene of air regulator, according within the above range and/or the second gas of ratio The power of the heat source of cryogen pipeline 77 and the big air regulator of second liquid refrigerant tubing 79, selection have than by The big outer diameter of standard pipe diameter as the above-mentioned pipeline in air regulator, be used for 76 and of first gas refrigerant tubing The pipeline of liquid refrigerant pipeline 78, to realize effect of the invention.Thus, it is simple the present invention provides what is solved the above problems And direct scheme.