CN102230647A - Multi-split air conditioner - Google Patents
Multi-split air conditioner Download PDFInfo
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- CN102230647A CN102230647A CN2011101386903A CN201110138690A CN102230647A CN 102230647 A CN102230647 A CN 102230647A CN 2011101386903 A CN2011101386903 A CN 2011101386903A CN 201110138690 A CN201110138690 A CN 201110138690A CN 102230647 A CN102230647 A CN 102230647A
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- refrigerant pipeline
- heat exchanger
- air conditioner
- total refrigerant
- split air
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Abstract
The invention provides a multi-split air conditioner, which comprises an indoor unit which is provided with at least two parallel indoor heat exchangers, wherein the two ends of the indoor unit are correspondingly connected in series with a first total refrigerant pipeline and a second total refrigerant pipeline in a one-to-one manner respectively; branch refrigerant pipelines which correspond to each indoor heat exchanger in a one-to-one manner are branched from the first and the second total refrigerant pipelines respectively; the joint between each branch refrigerant pipeline and a corresponding indoor heat exchanger is provided with a connecting screw end; and the connecting screw end is a two-way pipe. By adopting the multi-split air conditioner, the defects of severe changes of the forward and backward flowing directions caused by the flow of the branch refrigerant pipelines towards the total refrigerant pipelines through a cutoff valve and larger pressure loss caused subsequently are overcome.
Description
Technical field
The present invention relates to a kind of multi-split air conditioner.
Background technology
The partial structurtes schematic diagram of the multi-split air conditioner of prior art as shown in Figure 1, it comprises: outdoor heat exchanger 4, the total refrigerant pipeline 48 that has the indoor units of the indoor heat exchanger 8 of at least two parallel connections, draws from outdoor heat exchanger 4.Wherein, told a plurality of branches refrigerant pipeline from total refrigerant pipeline 48.Adopt stop valve to be connected between respective chambers heat exchanger and the respective branch refrigerant pipeline.For simplicity, Fig. 1 only illustrates branch's refrigerant pipeline telling from total refrigerant pipeline 48 and to respective chambers heat exchanger 8 that should branch's refrigerant pipeline, adopts stop valve 9 to be connected between this branch's refrigerant pipeline and the corresponding indoor heat exchanger 8.Because between indoor heat exchanger 8 and total refrigerant pipeline 48, the refrigerant stop valve of need flowing through, and stop valve flows to sharply variation of generation before and after can causing refrigerant, 90 ° of variations took place in flow direction before and after for example meeting as shown in Figure 2 caused refrigerant, cause thus and cause the big pressure loss in the refrigerant flow process.Obviously, indoor heat exchanger in parallel is many more, and corresponding stop valve is just many more, and the refrigerant pressure loss is also just big more, and this has produced bad influence to the complete machine performance.
Summary of the invention
At the problem that exists in the correlation technique, the object of the present invention is to provide the method for a kind of multi-split air conditioner and the control refrigerant pressure loss, be branched a plurality of branches refrigerant pipeline that the back forms to solve total refrigerant pipeline of connect with indoor units in the prior art and since with indoor units in the respective chambers heat exchanger between adopt stop valve to be connected to cause than the technical problem of the pressure loss greatly.
For achieving the above object, the invention provides a kind of multi-split air conditioner, comprise: indoor units with at least two indoor heat exchangers in parallel, one end of indoor units is in series with first total refrigerant pipeline, the other end is in series with second total refrigerant pipeline, first and second total refrigerant pipelines have been told respectively and each indoor heat exchanger branch's refrigerant pipeline one to one, and the connecting filament head of bipass formula is adopted in the junction between each branch's refrigerant pipeline and the corresponding indoor heat exchanger.
Preferably, also be respectively equipped with stop valve on first and second total refrigerant pipelines.
Preferably, the connecting filament head is a straight pipe.
Preferably, multi-split air conditioner also comprises cross valve, compressor and the outdoor heat exchanger of connecting with second total refrigerant pipeline, and the exhaust outlet of described compressor is by cross valve, selectively with outdoor heat exchanger or first total refrigerant pipeline connection.
Preferably, the exhaust outlet of compressor and air entry are communicated with one by one with two ports of cross valve respectively, first total refrigerant pipeline is communicated with one of two ports in addition of cross valve, and in two ports in addition of an end of outdoor heat exchanger and cross valve another is communicated with the other end of outdoor heat exchanger and second total refrigerant pipeline connection.
Beneficial effect of the present invention is: be connected by the connecting filament head between indoor heat exchanger and the respective branch refrigerant pipeline among the present invention, connect the big refrigerant pressure loss that is caused than the available technology adopting stop valve, the present invention has reduced the pressure loss of refrigerant, has correspondingly improved the complete machine performance of air-conditioner;
Further, be under the situation of straight pipe at the connecting filament head, the angle of front and back flow direction that flows through the refrigerant of connecting filament head is 180 °, i.e. refrigerant streamlined flow, this moment, refrigerant flowed the gentlyest, made that correspondingly the effect that reduces the refrigerant pressure loss is the most remarkable.
Description of drawings
Fig. 1 is the partial structurtes schematic diagram of the multi-split air conditioner of prior art;
Fig. 2 is the partial structurtes schematic diagram of an embodiment of multi-split air conditioner of the present invention, and each that wherein shows in a plurality of indoor heat exchangers in parallel adopts straight tubular connecting filament head as joint, to be connected with respective branch refrigerant pipeline;
Fig. 3 is the fundamental diagram of multi-split air conditioner of the present invention, shows the detailed situation that is provided with the connecting filament head.
The specific embodiment
The partial structurtes figure of multi-split air conditioner of the present invention as shown in Figure 2 and the schematic diagram of the multi-split air conditioner of the present invention shown in Fig. 3.In conjunction with Fig. 2 and Fig. 3, multi-split air conditioner of the present invention comprises: indoor units 80 has at least two indoor heat exchangers 8 and 8 ' in parallel; And the first total refrigerant pipeline 33 that is connected on an end of indoor units, be connected on second total refrigerant pipeline 48 of the other end of indoor units 80; Wherein, first total refrigerant pipeline 33, second total refrigerant pipeline 48 branches out respectively and each indoor heat exchanger branch's refrigerant pipeline one to one, adopts bipass formula connecting filament head to be connected between each branch's refrigerant pipeline and the corresponding indoor heat exchanger.Property purpose presented for purpose of illustration, Fig. 3 shows the indoor heat exchanger 8 and 8 ' of two parallel connections, indoor heat exchanger 8 is connected with the branch's refrigerant pipeline that branches out from second total refrigerant pipeline 48 by connecting filament head 81, is connected with the branch's refrigerant pipeline that branches out from first total refrigerant pipeline 33 by connecting filament head 83; Similarly, adopt connecting filament head 81 to be connected between indoor heat exchanger 8 ' and the corresponding branch refrigerant pipeline with 83 ', for example, under heating mode, refrigerant from first total refrigerant pipeline 33 is divided into two branch roads, and a branch road flows to second total refrigerant pipeline 48 behind connecting filament head 83, indoor heat exchanger 8, connecting filament head 81; Another branch road flows to second total refrigerant pipeline 48 behind connecting filament head 83 ', indoor heat exchanger 8 ', connecting filament head 81 '.By this, among the present invention, be connected by bipass formula connecting filament head between indoor heat exchanger and the respective branch refrigerant pipeline, than stop valve, bipass formula connecting filament head makes refrigerant flow to rapid variation can not take place, for example make when flowing to angle before and after the refrigerant and being 90 ° at stop valve, the connecting filament head makes and flows to angle before and after the refrigerant is obtuse angle greater than 90 °, so adopt the connecting filament head can reduce the pressure loss that produces when refrigerant flows between indoor heat exchanger and total refrigerant pipeline (first and second total refrigerant pipelines), correspondingly improved the complete machine performance of air-conditioner.
In order to illustrate further the present invention, the partial structurtes schematic diagram referring to an illustrative examples of the multi-split air conditioner of the present invention shown in Fig. 2 shows outdoor heat exchanger 4, leads to second total refrigerant pipeline 48, indoor heat exchanger 8 from outdoor heat exchanger 4.As shown in Figure 2, adopt connecting filament head 81 to be connected between the branch's refrigerant pipeline that branches out from second total refrigerant pipeline 48 and the indoor heat exchanger 8, and in this example the connecting filament head is made as straight pipe, promptly, flowing through, the angle of flow direction A and B is 180 ° before and after the refrigerant of straight pipe, in other words, refrigerant linearly flows when flowing through straight pipe.In this case, because the refrigerant of the straight pipe of flowing through linearly flows, this moment, refrigerant was mobile the mildest, made that correspondingly the effect that reduces the refrigerant pressure loss is the most remarkable.Obviously be appreciated that the connecting filament head also can be the bipass of other form, for example the angle between the axis of two of this bipass ports greater than 90 ° smaller or equal to 180 °.
Continuation in multi-split air conditioner of the present invention, also is respectively equipped with stop valve 5 and 6 as total stop valve, with the switch of refrigerant in all indoor heat exchangers in the control indoor units 80 referring to Fig. 3 on first total refrigerant pipeline 33, second total refrigerant pipeline 48.As further illustrating among Fig. 3, multi-split air conditioner of the present invention also comprises: cross valve 3, compressor 1 and the outdoor heat exchanger 4 of connecting with second total refrigerant pipeline 48, the exhaust outlet 13 of compressor 1 and air entry 11 are communicated with one by one with two ports of cross valve 3 respectively, first total refrigerant pipeline 33 is communicated with one of two ports in addition of cross valve 3, and in two ports in addition of an end of outdoor heat exchanger 4 and cross valve 3 another be communicated with, and the other end of outdoor heat exchanger 4 is communicated with second total refrigerant pipeline 48.Thereby the exhaust outlet 13 of compressor 1 is communicated with outdoor heat exchanger 4 or first total refrigerant pipeline 33 selectively by cross valve 3.
To sum up, be connected by the connecting filament head between indoor heat exchanger and the respective branch refrigerant pipeline among the present invention, connect the big refrigerant pressure loss that is caused than the available technology adopting stop valve, the present invention has reduced the pressure loss of refrigerant, has correspondingly improved the complete machine performance of air-conditioner; At the connecting filament head is under the situation of straight pipe, and the angle of front and back flow direction that flows through the refrigerant of connecting filament head is 180 °, i.e. refrigerant streamlined flow, and this moment, refrigerant flowed the gentlyest, made that correspondingly the effect that reduces the refrigerant pressure loss is the most remarkable.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. multi-split air conditioner comprises: have the indoor units (80) of at least two indoor heat exchangers (8,8 ') in parallel, an end of indoor units is in series with first total refrigerant pipeline (33), and the other end is in series with second total refrigerant pipeline (48),
It is characterized in that: described first and second total refrigerant pipelines (33,48), branch has and each indoor heat exchanger branch's refrigerant pipeline one to one respectively, and each branch's refrigerant pipeline adopts the connecting filament head (81,83,81 ', 83 ') of bipass formula to be connected with the junction between the corresponding indoor heat exchanger (8,8 ').
2. multi-split air conditioner according to claim 1 is characterized in that: also be respectively equipped with stop valve (5,6) on described first and second total refrigerant pipelines (33,48).
3. multi-split air conditioner according to claim 1 and 2 is characterized in that: described connecting filament head (81,83,81 ', 83 ') is a straight pipe.
4. multi-split air conditioner according to claim 3 is characterized in that: also comprise cross valve (3), compressor (1) and the outdoor heat exchanger (4) of connecting with second total refrigerant pipeline (48),
Wherein, the exhaust outlet (13) of described compressor (1) is communicated with described outdoor heat exchanger (4) or described first total refrigerant pipeline (33) selectively by described cross valve (3).
5. multi-split air conditioner according to claim 4 is characterized in that:
The exhaust outlet (13) of described compressor (1) and air entry (11) are communicated with one by one with two ports of described cross valve (3) respectively, and described first total refrigerant pipeline (33) is communicated with one of two ports in addition of described cross valve (3), and
In two ports in addition of one end of described outdoor heat exchanger (4) and described cross valve (3) another is communicated with, and the other end is communicated with described second total refrigerant pipeline (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101386903A CN102230647A (en) | 2011-05-26 | 2011-05-26 | Multi-split air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101386903A CN102230647A (en) | 2011-05-26 | 2011-05-26 | Multi-split air conditioner |
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| CN102230647A true CN102230647A (en) | 2011-11-02 |
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| CN2011101386903A Pending CN102230647A (en) | 2011-05-26 | 2011-05-26 | Multi-split air conditioner |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438967Y (en) * | 2000-07-10 | 2001-07-11 | 广东美的集团股份有限公司 | Separating air conditioner |
| CN1904514A (en) * | 2005-07-29 | 2007-01-31 | 乐金电子(天津)电器有限公司 | One drag several air conditioner |
| CN101109588A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | One-master-driving-two air conditioner refrigerating system with constant frequency |
| CN202092239U (en) * | 2011-05-26 | 2011-12-28 | 海尔集团公司 | Multi-split air conditioner |
-
2011
- 2011-05-26 CN CN2011101386903A patent/CN102230647A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438967Y (en) * | 2000-07-10 | 2001-07-11 | 广东美的集团股份有限公司 | Separating air conditioner |
| CN1904514A (en) * | 2005-07-29 | 2007-01-31 | 乐金电子(天津)电器有限公司 | One drag several air conditioner |
| CN101109588A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | One-master-driving-two air conditioner refrigerating system with constant frequency |
| CN202092239U (en) * | 2011-05-26 | 2011-12-28 | 海尔集团公司 | Multi-split air conditioner |
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Application publication date: 20111102 |