CN1210533C - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN1210533C CN1210533C CN 02107721 CN02107721A CN1210533C CN 1210533 C CN1210533 C CN 1210533C CN 02107721 CN02107721 CN 02107721 CN 02107721 A CN02107721 A CN 02107721A CN 1210533 C CN1210533 C CN 1210533C
- Authority
- CN
- China
- Prior art keywords
- cross valve
- control
- outdoor unit
- coupling
- valve
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0292—Control issues related to reversing valves
Abstract
The invention provides an air conditioner, in which positioning of a four-way valve in an outdoor unit can be substantially positively performed so long as the valve has no malfunction. The air conditioner is provided with a plurality of outdoor units A-C having respectively four-way valves A1-C1, and a centralized controller for controlling positioning of the four-way valve. In the control, the outdoor units A-C are successively operated, and positions of respective four-way valves are selected in the direction corresponding to the operation mode. The units A-C transmit signals respectively to the centralized control device whether respective valve positions have been switched in the direction corresponding to the operation mode. If the controller does not receive signals of successful valve-switching from either of the outdoor units in a predetermined time, the operation is suspended, and the valve positioning control is repeated. The air conditioner is further provided with a control means, which gives priority in starting the next valve positioning to an outdoor unit C having failed in the switching in the previous control.
Description
Technical field
The air conditioner that pipe arrangement between the unit that the present invention relates to extend many outdoor units and from indoor units is connected in parallel.
Background technology
The known air conditioner that possesses many outdoor units of people with cross valve.This air conditioner uses CCU (hereinafter referred to as CCU) to control each outdoor unit.
In this control, when CCU implements the control of cross valve coupling, make whole outdoor unit operations successively, the position of cross valve is switching to the direction consistent with this operational mode, from each outdoor unit to the cross valve position that CCU sends oneself whether be switching to the direction consistent with operational mode signal, at this CCU at the appointed time (for example, 2 minutes) in not when the signal of position handover success of cross valve is received in whole off-premises station windings, temporarily out of service, the cross valve coupling is controlled once more.
When implementing above-mentioned cross valve coupling control, having under the situation of many outdoor units, if the whole outdoor units of one push start, then because starting current increases, so unit outside the priming chamber that sets apart at present at interval successively.
Therefore, judge that the cross valve position of whole outdoor units needs the regular hour, for example in 2 minutes, may can not judge.Under this state, even carry out repeatedly the control of cross valve coupling, the possibility of failure is also very high.
Though can consider to prolong the time of afore mentioned rules, under the situation of time expand, when the switching of cross valve is unsuccessful, because the operation of long-time continuous ground can flow into the interior problem of other outdoor unit so exist high-pressure refrigerant.
Summary of the invention
Therefore, the objective of the invention is to eliminate problems of the prior art, provide as long as this cross valve does not have unfavorable condition just can carry out the air conditioner of the cross valve location matches of outdoor unit substantially reliably.
The air conditioner of the present invention the 1st aspect comprises many outdoor units with cross valve, when carrying out the control of cross valve coupling, whole outdoor units are moved successively, the position of each cross valve is switching to the direction consistent with this operational mode, when the switching of the cross valve position of whole outdoor units is unsuccessful at the appointed time, temporarily out of service, carry out the control of cross valve coupling once more, it is characterized in that, possesses control device, this control device is in the control of the coupling of cross valve last time, the position handoff failure of above-mentioned cross valve outdoor unit, preferentially starting in the control of next cross valve coupling.
The air conditioner of the present invention the 2nd aspect comprises many outdoor units with cross valve, when CCU carries out the control of cross valve coupling, whole outdoor units are moved successively, the position of each cross valve is switching to the direction consistent with this operational mode, whether switched to signal from each outdoor unit to the cross valve position that CCU sends oneself for the direction consistent with operational mode, this CCU in the stipulated time not when the signal of position handover success of cross valve is received in whole off-premises station windings, temporarily out of service, carry out the control of cross valve coupling once more, it is characterized in that, has control device, this control device is in last time the cross valve coupling is controlled, the position handoff failure of above-mentioned cross valve outdoor unit, preferentially starting in the control of next cross valve coupling.
In the present invention, because to the position handoff failure of above-mentioned cross valve in the control of the coupling of cross valve last time outdoor unit, preferentially starting in the control of next cross valve coupling, so, just can make the last time cross valve location matches success reliably of kaput outdoor unit substantially as long as this cross valve does not have unfavorable condition.
Specific embodiments of the present invention is:
A kind of air conditioner, comprise many outdoor units with cross valve, when CCU carries out the control of cross valve coupling, whole outdoor units are moved successively, the position of each cross valve is switching to the direction consistent with this operational mode, whether switched to signal from each outdoor unit to the cross valve position that CCU sends oneself for the direction consistent with operational mode, this CCU in the stipulated time not when the signal of position handover success of cross valve is received in whole off-premises station windings, temporarily out of service, carry out the control of cross valve coupling once more, it is characterized in that
This CCU make above-mentioned cross valve in the control of the coupling of cross valve last time the position handoff failure outdoor unit, preferentially starting in the control of next cross valve coupling.
Description of drawings
Fig. 1 is the refrigerant loop figure that air conditioner one embodiment of the present invention is shown.
Fig. 2 a-g is the time diagram of cross valve coupling control.
The specific embodiment
Below, with reference to description of drawings one embodiment of the present of invention.
Among Fig. 1,1A, 1B represent outdoor unit.Pipe arrangement 9 between these outdoor unit 1A, 1B and the unit that is made of tracheae 5 and liquid pipe 7 is connected in parallel, and tracheae 5 is connected with indoor units 3A～3D with liquid pipe 7.
Outdoor unit 1A, 1B possess: by gas engine compressor driven 11A, 11B; Oil eliminator 12A, 12B; Cross valve 13A, 13B; Outdoor heat converter 14A, 14B; Outdoor fan 17A, 17B; Expansion valve 15A, 15B; And other fluid reservoir 16A, 16B etc.In addition, indoor units 3A, 3B possess indoor heat converter 34A～34D; Indoor fan 37A～37D; And indoor electric expansion valve 39A～39D.
In the present embodiment, use CCU (below, be called CCU) 100 to control each outdoor unit 1A, 1B.
For dim operation the time, cross valve 13A, 13B switch to the dotted line state.From unit 1A, 1B outside the compressor room.
When heating operation, cross valve 13A, 13B switch to the dotted line state.From the cold-producing medium of compressor 11A, 11B shown in dotted arrow through oil eliminator 12A, 12B, and behind cross valve 13A, the 13B, flow into and divide in bronchus 5A, the 5B, the interflow flows in each indoor units 3A～3D in tracheae 5.Through indoor heat converter 34A～34D, and indoor electric expansion valve 39A～39D, the interflow by air accumulator 33, flows in outdoor unit 1A, the 1B in liquid pipe 7.Again through outdoor heat converter 14A, 14B, cross valve 13A, 13B, and fluid reservoir 16A, 16B turn back in the suction line of compressor 11A, 11B.
When refrigerating operaton, cross valve 13A, 13B are switched to the solid line state.From the cold-producing medium of compressor 11A, 11B shown in the solid line arrow through oil eliminator 12A, 12B, and behind cross valve 13A, the 13B, inflow outdoor heat exchanger 14A, 14B are again in expansion valve 15A, 15B flow to liquid pipe 7 and air accumulator 33.Flow into indoor units 3A～3D more therefrom, through indoor electric expansion valve 39A～39D and indoor heat converter 34A～34D, flow into tracheae 5 and divide bronchus 5A, 5B, through cross valve 13A, 13B and fluid reservoir 16A, the 16B of each outdoor unit 1A, 1B, turn back to the suction line of compressor 11A, 11B again.
For above-mentioned air conditioner, no matter the operation of other off-premises station group 1A, 1B or stop, system is in service must to make the switching position of cross valve 13A, 13B of whole outdoor unit 1A, 1B consistent with its operational mode.The refrigerating operaton pattern for example, if carry out the heating operation pattern, then must make switching position and the dotted line state consistency of each cross valve 13A, 13B, if then must make switching position and the solid line state consistency of each cross valve 13A, 13B.
By above-mentioned CCU100 this cross valve coupling is controlled.When this CCU100 moves after system initialization, perhaps freezing, when heating switches, the operation of whole outdoor unit 1A, 1B stopped, carrying out the control of cross valve coupling in the following order.
Fig. 2 is the time diagram of expression cross valve coupling control sequence.Among Fig. 1, be described though outdoor unit is decided to be 2, here, for convenience of description for the purpose of, outdoor unit is decided to be 3, each outdoor unit is marked with A, B, C, its cross valve is marked with A1, B1, C1 describes.
In (a) of Fig. 2, when ON Action is carried out in control to the cross valve coupling according to the instruction from CCU100, at first, in (b) of Fig. 2, unit A outside the priming chamber, after a while, in (c) of Fig. 2, B of Unit outside the priming chamber, again more after a while, in Fig. 2 (d), unit C outside the priming chamber.This is for starting current is restricted to Min..
In (b) of Fig. 2, after outdoor unit A starting, at first, in (e) of Fig. 2, its cross valve A1 is switching to and the consistent direction of operational mode at this moment.If imappropriate just from CCU100 outgoing position matched signal as long as this cross valve A1 does not occur, then according to this instruction, A1 is switching to the direction consistent with operational mode this cross valve.For example, can rise to detect according to the refrigerant temperature that flows through outdoor heat converter 14A, 14B or tracheae 5 or liquid pipe 7 etc. and carry out this switching whether, and send signal to CCU from each outdoor unit A～C.
Then, in (c) of Fig. 2, B of Unit outside the priming chamber is switching to this cross valve B1 and the consistent direction of operational mode at this moment in (f) of Fig. 2.In addition, after a while, in (d) of Fig. 2, unit C outside the priming chamber, last, in (g) of Fig. 2, should be that this cross valve C1 is switching to and the consistent direction of operational mode at this moment.
Yet in (a) of Fig. 2, setting a cross valve coupling control needed time the longest is 2 minutes.Therefore, in (g) of Fig. 2, before this cross valve C1 is switched, passed through 2 minutes, change action is not also carried out, the switching fall through of then so-called cross valve C1.So CCU100 transfers to the control of secondary cross valve coupling after whole outdoor units are temporarily stopped.According to before, when transferring to cross valve coupling control for the second time, switch from the control that begins most to reform identical by the order of outdoor unit A～C.To this, can carry out identical operations repeatedly, once more, the possibility of handoff failure that belongs to last cross valve C1 is very high.
In the present embodiment, in (a) of Fig. 2, carrying out cross valve when control coupling second time, shown in Fig. 2 (d), make in cross valve coupling control first time handoff failure outdoor unit C preferentially start.Therefore, shown in Fig. 2 (g), this cross valve C is switching to the direction consistent with operational mode, and with contrast for the first time, the cross valve coupling of whole outdoor unit A～C is finished.In view of the above, because make handoff failure last time the preferentially starting in the control of next cross valve coupling of outdoor unit, so, as long as this cross valve does not have imappropriate cross valve location matches success reliably substantially in the longest 2 minutes time that just can make last time failure.
Above with the embodiment the present invention that has been base description, but should know and the invention is not restricted to above-mentioned description.
Among the present invention and since make handoff failure last time the preferentially starting in the control of next cross valve coupling of outdoor unit, so, as long as this cross valve does not have unfavorable condition just can carry out the cross valve location matches of last time failing substantially reliably.
Claims (1)
1. air conditioner, comprise many outdoor units with cross valve, when CCU carries out the control of cross valve coupling, whole outdoor units are moved successively, the position of each cross valve is switching to the direction consistent with this operational mode, whether switched to signal from each outdoor unit to the cross valve position that CCU sends oneself for the direction consistent with operational mode, this CCU in the stipulated time not when the signal of position handover success of cross valve is received in whole off-premises station windings, temporarily out of service, carry out the control of cross valve coupling once more, it is characterized in that
This CCU make above-mentioned cross valve in the control of the coupling of cross valve last time the position handoff failure outdoor unit, preferentially starting in the control of next cross valve coupling.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001033345A JP4107808B2 (en) | 2001-02-09 | 2001-02-09 | Air conditioner |
| JP33345/01 | 2001-02-09 | ||
| JP33345/2001 | 2001-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1372109A CN1372109A (en) | 2002-10-02 |
| CN1210533C true CN1210533C (en) | 2005-07-13 |
Family
ID=18897107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02107721 Expired - Lifetime CN1210533C (en) | 2001-02-09 | 2002-02-08 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4107808B2 (en) |
| KR (1) | KR100445615B1 (en) |
| CN (1) | CN1210533C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100535674B1 (en) * | 2004-02-25 | 2005-12-09 | 엘지전자 주식회사 | 4-way valve control method for multi-heat pump |
| KR101222573B1 (en) * | 2006-01-13 | 2013-01-16 | 삼성전자주식회사 | Air-conditioner |
| KR100791121B1 (en) * | 2006-10-10 | 2008-01-02 | 주식회사 대우일렉트로닉스 | Method for controlling stop operating of air conditioner |
| JP5324768B2 (en) * | 2007-09-26 | 2013-10-23 | アイシン精機株式会社 | Air conditioner |
| JP2009228978A (en) * | 2008-03-24 | 2009-10-08 | Mitsubishi Electric Corp | Refrigerating device |
| JP5464359B2 (en) * | 2010-05-10 | 2014-04-09 | 株式会社富士通ゼネラル | Air conditioner |
| JP2013152076A (en) * | 2013-04-08 | 2013-08-08 | Hitachi Appliances Inc | Multi type air conditioner |
| CN104833047B (en) * | 2015-04-22 | 2017-11-24 | 四川长虹电器股份有限公司 | A kind of control method and humidity control system |
| JP6552939B2 (en) * | 2015-10-22 | 2019-07-31 | 三菱重工サーマルシステムズ株式会社 | Air conditioning system |
| KR102337730B1 (en) * | 2017-09-26 | 2021-12-10 | 엘지전자 주식회사 | Air conditional and control method thereof |
| JP6926900B2 (en) * | 2017-09-28 | 2021-08-25 | 株式会社アイシン | Air conditioner |
-
2001
- 2001-02-09 JP JP2001033345A patent/JP4107808B2/en not_active Expired - Lifetime
-
2002
- 2002-02-07 KR KR20020006925A patent/KR100445615B1/en active IP Right Grant
- 2002-02-08 CN CN 02107721 patent/CN1210533C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP4107808B2 (en) | 2008-06-25 |
| KR20020066188A (en) | 2002-08-14 |
| KR100445615B1 (en) | 2004-08-25 |
| CN1372109A (en) | 2002-10-02 |
| JP2002235964A (en) | 2002-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20050713 |
|
| CX01 | Expiry of patent term |