CN1223806C - Air conditioner and method for controlling same - Google Patents
Air conditioner and method for controlling same Download PDFInfo
- Publication number
- CN1223806C CN1223806C CNB021513074A CN02151307A CN1223806C CN 1223806 C CN1223806 C CN 1223806C CN B021513074 A CNB021513074 A CN B021513074A CN 02151307 A CN02151307 A CN 02151307A CN 1223806 C CN1223806 C CN 1223806C
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- CN
- China
- Prior art keywords
- indoor unit
- load
- compressor
- air
- maximum load
- 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 - Fee Related
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner. This air conditioner comprises an indoor unit, an outdoor unit having a first compressor with variable compression speeds and a second compressor with a constant compression speed, and a control part operating only the first compressor when a load on the indoor unit is less than 50-[alpha]% of the maximum load on the indoor unit where a reference value larger than 0 and smaller than 50 is [alpha], operating only the second compressor when a load on the indoor unit is within the range of 50-[alpha]% to 50+[alpha]% of the maximum load on the indoor unit, and simultaneously operating the first and second compressors when a load on the indoor unit is more than 50+[alpha]% of the maximum load on the indoor unit.
Description
Technical field
The present invention relates to a kind of air-conditioner, a kind of air-conditioner and the control method thereof that relate in particular to.
Background technology
Usually, air-conditioner all is to be contained in indoor, the bedroom or in the office, also can be contained in the shop, thereby make indoor maintenance comfortable environment by temperature, humidity and the cleannes of control room air.
Structure according to this air-conditioner, air-conditioner is divided into two kinds of package AC plant and detachable air conditioners, in package AC plant, each parts that forms kind of refrigeration cycle all are contained in the housing, and in detachable air conditioner, these parts are contained in respectively and are in the neutralization of indoor indoor unit and are in the outdoor outdoor unit.
Detachable air conditioner comprises a multiple-chamber type air-conditioner or multichannel formula air-conditioner, and this air-conditioner has a plurality of indoor units that are used to cool off or heat a plurality of interior spaces.
Fig. 1 is the structural representation of traditional multichannel formula air-conditioner; Fig. 2 is the curve map of compressor according to the compressor operating method of multichannel formula air-conditioner load.
As shown in Figure 1, traditional multichannel formula air-conditioner comprises and a plurality ofly is arranged on each indoor indoor unit 10 and one and is arranged on outdoor outdoor unit 20 that each indoor unit has an indoor heat converter 11a-11c who cools off operation and heating operation respectively.
Outdoor unit 20 comprises the housing of installing space (not shown) in one, an inversion compressor 21 and the constant speed type compressor 23 that compression speed is constant that compression speed is variable, and these two compressors all are contained in the housing; One is used for outdoor heat converter 27 that the heat of compressed refrigerant is emitted; And one be contained in the cooling fan 29 that outdoor heat converter 27 1 sides are used to cool off this outdoor heat converter 27, thereby quicken the heat release of cold-producing medium.
According to the flow direction of cold-producing medium when cooling moves, a main electric expansion valve 12 is linked to each other with outdoor heat converter 27, electric expansion valve 13a-13c is linked to each other with this main electric expansion valve 12, so that before cold-producing medium enters each indoor heat converter 11a-11c, make the cold-producing medium puffing.Temperature sensor 15a-15c is contained in the outlet of each indoor heat converter 11a-11c respectively, so that detect the temperature of cold-producing medium.
Constant speed type compressor 23 and inversion compressor 21 have compression volume separately, and their compression volume is respectively all maximum load L of indoor unit 10
mSummation S
LHalf (50%).Constant speed type compressor 23 and inversion compressor 21 exhaust side separately combine before outdoor heat converter 27, a temperature sensor 25 is contained in binding site, thereby compressed refrigerant detected the temperature of this refrigerant emission in the past in each compressor 21 and 23.
According to this structure, if when operation all indoor units 10 load L be less than or equal to maximum load L
mSummation S
LHalf (50%), i.e. L/S
L≤ 0.5, then the control module (not shown) drives inversion compressor 21 according to load L, and cold-producing medium is offered operating each indoor unit 10.
If the load L of indoor unit 10 is greater than S during operation
LHalf (50%), i.e. L/S
L＞0.5, then both driven constant speed type compressor 23 according to overload, drive inversion compressor 21 again, so that cold-producing medium is offered each indoor unit 10.
But, have following defective by can find traditional multichannel formula air-conditioner referring to Fig. 2:
That is to say that the load of indoor unit 10 equals the summation S of the maximum load of all indoor units 10 during owing to operation
LA half to make inversion compressor 21 be activated operation, and since when operation indoor unit 10 load surpass the summation S of all indoor unit 10 maximum loads
LA half to make constant speed type compressor 23 and inversion compressor 21 be activated operation together, therefore increase relatively the running time of inversion compressor 21, because can produce wearing and tearing thus and damage, institute is so that the shortening in service life of the inversion compressor 21 more expensive than constant speed type compressor 23.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of air-conditioner and control method thereof, by reducing the running time of the variable inversion compressor of compression speed, can prolong the service life of inversion compressor.
In order to realize these advantages and other advantages, according to the purpose of the present invention of following summary and generalized description, the air-conditioner that is provided comprises: an indoor unit; An outdoor unit, this outdoor unit have the first variable compressor of compression speed and second compressor that compression speed is constant; With a control module, when if the load of indoor unit is less than or equal to the 50-α % of indoor unit maximum load, then this control module makes first compressor operating, if the load of indoor unit is that the 50-α % of indoor unit maximum load is in the scope of 50+ α % the time, then this control module makes second compressor operating, if the load of indoor unit is during greater than the 50+ α % of indoor unit maximum load, this control module just makes first and second compressor operatings, suppose herein α greater than 0 less than 50.
To achieve these goals, the present invention also provides a kind of method of controlling air-conditioner, suppose that wherein α is greater than 0, but less than 50, when the load of indoor unit is less than or equal to the 50-α % of indoor unit maximum load, has only the first variable compressor operating of compression speed, if the load of indoor unit is that the 50-α % of indoor unit maximum load is in the scope of 50+ α % the time, has only the second constant compressor operating of compression speed, if the load of indoor unit is during greater than the 50+ α % of indoor unit maximum load, first and second compressors move simultaneously.
By below in conjunction with the accompanying drawing detailed description of the present invention, will more be expressly understood above-mentioned purpose of the present invention, feature, characteristic and advantage.
Description of drawings
These accompanying drawings are used for further understanding the present invention, and belong to the part of specification, and these accompanying drawings are used for describing embodiments of the invention, just principle of the present invention can be described by describing.Wherein:
Fig. 1 is the structural representation of traditional multichannel formula air-conditioner;
Fig. 2 is the operation method curve map of compressor according to traditional multichannel formula air-conditioner load of Fig. 1;
Fig. 3 is the block diagram of air-conditioner of the present invention;
Fig. 4 is the operation method curve map of compressor according to the multichannel formula air-conditioner load of Fig. 3; With
Fig. 5 is the control method flow chart of air-conditioner of the present invention.
Detailed description of preferred embodiment
Describe the preferred embodiments of the present invention now in detail, and the accompanying drawings example.
Represent with identical label with the element components identical of conventional air conditioner, thereby omission is to their detailed description.
Fig. 3 is the block diagram of air-conditioner of the present invention, and Fig. 4 is the operation method curve map of compressor according to the multichannel formula air-conditioner load of Fig. 3, and Fig. 5 is the control method flow chart of air-conditioner of the present invention.
Air-conditioner of the present invention comprises: an indoor unit 10; An outdoor unit 20, this outdoor unit have an inversion compressor 21 and the constant speed type compressor 23 that compression speed is constant that compression speed is variable; And a control module 33, if the load L of indoor unit 10 is less than or equal to the maximum load S of indoor unit 10
L50-α % the time, then this control module makes 21 operations of inversion compressor, if the load of indoor unit 10 is that the 50-α % of indoor unit 10 maximum loads is in the scope of 50+ α % the time, then this control module makes 23 operations of constant speed type compressor, if the load of indoor unit 10 is during greater than the 50+ α % of the maximum load of indoor unit 10, then this control module makes inversion compressor 21 and 23 operations of constant speed type compressor.
Indoor unit 10 can have the one or more indoor unit of branch (not shown) that are separately positioned in the respective compartments, and wherein the load L of indoor unit 10 is all summations of dividing indoor unit loads, S
LBe each maximum load L that divides indoor unit
mSummation.
As shown in Figure 3, air-conditioner of the present invention also comprises the load capacity computing unit 31 of the load of an indoor unit 10 that is used for calculating running, and control module 33 is according to load capacity computing unit 31 load calculated control constant speed type compressor 23 and inversion compressor 21.
The compression volume of inversion compressor 21 is exactly that half (50%) of the maximum load of indoor unit 10 deducts the value that obtains behind the α %, i.e. (50-α) %, the compression volume of constant speed type compressor 23 is exactly that half (50%) of the maximum load of indoor unit 10 adds the value that obtains behind the α %, i.e. (50+ α) %.
Consider the load of operational mode of indoor unit 10 and user's needs, can suitably α be set in greater than 0 scope, i.e. 0＜α＜50 less than 50.Usually α is set at indoor unit 10 maximum load 5% to 10%.For example, if α=10, then the compression volume of inversion compressor 21 and constant speed type compressor 23 be respectively indoor unit 10 maximum load 40% and 60%.
According to this structure, as shown in Figure 4, control module 33 control load amount computing units 31, inspection indoor unit 10 is in operation or remains operation (step S10), and calculate percentage value t with respect to the maximum load of indoor unit 10, i.e. t=L/S according to the operational mode of the indoor unit 10 that remains to be moved
L* 100% (step S20).
Referring now to Fig. 5,, if the t that calculates is less than or equal to 50-α, i.e. t≤50-α (step S30), then control module is controlled, and only makes 21 operations (step S40) of inversion compressor.
If t is less than or equal to 50+ α % greater than 50-α (step S30), i.e. 50-α %＜t≤50+ α % (step S50), then control module is controlled, and only makes 23 operations (step S60) of constant speed type compressor.
Simultaneously, if t surpasses 50+ α (step S50), then control module is controlled, and constant speed type compressor 23 and inversion compressor 21 are all moved, so that consistent with load (step S70).
In the above embodiment of the present invention, adopt inversion compressor and constant speed type compressor that the control method of compressor is described, wherein the structure of inversion compressor is to make its compression volume equal the 50-α % of the maximum load of indoor unit, and the structure of constant speed type compressor is to make its compression volume equal the 50+ α % of the maximum load of indoor unit.But the compressor control method of air-conditioner of the present invention also is respectively 50% situation of indoor unit maximum load applicable to the compression volume of inversion compressor and constant speed type compressor, no matter wherein the compression volume of compressor how, α all chooses at random.
As mentioned above, the advantage of air-conditioner of the present invention and control method thereof is by just making the running time that reduces the inversion compressor this relatively obtain the service life of expensive inversion compressor prolonging.
Owing under the prerequisite that does not exceed spirit of the present invention or principal character, can will present invention resides in the different forms, so it is to be further understood that, if there is not special provision, then the foregoing description is not limited to above-described each details, but it can be regarded as in the spiritual scope that drops on claims qualification, therefore, all in the boundary of claims, these boundaries comprise by claims in other words for any change and conversion.
Claims (8)
1. air-conditioner, it comprises:
Indoor unit;
Outdoor unit, this outdoor unit have first variable compressor of compression speed and the second constant compressor of compression speed; With
Control module is characterized in that,
When if the load of indoor unit is less than or equal to the 50-α % of indoor unit maximum load, then this control module makes first compressor operating, if the load of indoor unit is that the 50-α % of indoor unit maximum load is in the scope of 50+ α % the time, then this control module makes second compressor operating, if the load of indoor unit is during greater than the 50+ α % of indoor unit maximum load, this control module just makes first and second compressor operatings, set herein reference value alpha greater than 0 less than 50.
2. air-conditioner according to claim 1, wherein the compression volume of first compressor is 0～50-α % of indoor unit maximum load, the compression volume of second compressor is 0～50+ α % of indoor unit maximum load.
3. air-conditioner according to claim 1 and 2, wherein indoor unit has the indoor unit of one or more branches.
4. air-conditioner according to claim 1, the load of wherein measuring indoor unit with the load capacity computing unit.
5. method of controlling air-conditioner, it is characterized in that, suppose that α is greater than 0, but less than 50, when the load of indoor unit is less than or equal to the 50-α % of indoor unit maximum load, have only the first variable compressor operating of compression speed,, then have only the second constant compressor operating of compression speed if the load of indoor unit is the 50-α % of indoor unit maximum load in the scope of 50+ α % the time; If the load of indoor unit is during greater than the 50+ α % of indoor unit maximum load, then first and second compressors move simultaneously.
6. the method for control air-conditioner according to claim 5, wherein the compression volume of first compressor is 0～50-α % of indoor unit maximum load, the compression volume of second compressor is 0～50+ α % of indoor unit maximum load.
7. according to the method for claim 5 or 6 described control air-conditioners, wherein indoor unit has the indoor unit of one or more branches.
8. the method for control air-conditioner according to claim 5, the load of wherein measuring indoor unit with the load capacity computing unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR05457/2002 | 2002-01-30 | ||
| KR10-2002-0005457A KR100430004B1 (en) | 2002-01-30 | 2002-01-30 | Multi type air conditioner and compressor control method for multi type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1435604A CN1435604A (en) | 2003-08-13 |
| CN1223806C true CN1223806C (en) | 2005-10-19 |
Family
ID=27656343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021513074A Expired - Fee Related CN1223806C (en) | 2002-01-30 | 2002-11-15 | Air conditioner and method for controlling same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2003222368A (en) |
| KR (1) | KR100430004B1 (en) |
| CN (1) | CN1223806C (en) |
| ES (1) | ES2238118B2 (en) |
| IT (1) | ITMI20022296A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100430004B1 (en) * | 2002-01-30 | 2004-05-03 | 엘지전자 주식회사 | Multi type air conditioner and compressor control method for multi type air conditioner |
| KR101105952B1 (en) * | 2004-02-02 | 2012-01-18 | 엘지전자 주식회사 | A multi type air conditioner and method of controlling the same |
| KR100649600B1 (en) | 2004-05-28 | 2006-11-24 | 엘지전자 주식회사 | Compressor Control Method of Air-conditioner Having Multi-Compressor |
| JP4707562B2 (en) * | 2006-01-05 | 2011-06-22 | 関西電力株式会社 | Connected chiller / heater and its operation method |
| KR20130031090A (en) * | 2011-09-20 | 2013-03-28 | 엘지전자 주식회사 | Air conditioner and controlling method of the same |
| WO2015093723A1 (en) * | 2013-12-20 | 2015-06-25 | 한국에어로주식회사 | Dual control type screw air compressor device |
| CN104848620B (en) * | 2015-05-11 | 2018-08-10 | 珠海格力电器股份有限公司 | Screw-type water chiller booting loading control method and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1250611B (en) * | 1991-07-01 | 1995-04-21 | Arneg | LINEAR POWER MULTICOMPRESSOR REFRIGERATOR SYSTEM |
| JP3680619B2 (en) * | 1999-03-10 | 2005-08-10 | 株式会社日立製作所 | Refrigeration equipment |
| KR100405986B1 (en) * | 2001-02-26 | 2003-11-15 | 엘지전자 주식회사 | Air conditioning system and method |
| KR100430004B1 (en) * | 2002-01-30 | 2004-05-03 | 엘지전자 주식회사 | Multi type air conditioner and compressor control method for multi type air conditioner |
-
2002
- 2002-01-30 KR KR10-2002-0005457A patent/KR100430004B1/en not_active IP Right Cessation
- 2002-10-25 JP JP2002311105A patent/JP2003222368A/en active Pending
- 2002-10-29 IT IT002296A patent/ITMI20022296A1/en unknown
- 2002-11-08 ES ES200202561A patent/ES2238118B2/en not_active Expired - Fee Related
- 2002-11-15 CN CNB021513074A patent/CN1223806C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1435604A (en) | 2003-08-13 |
| ES2238118A1 (en) | 2005-08-16 |
| ES2238118B2 (en) | 2006-07-01 |
| ITMI20022296A1 (en) | 2003-07-31 |
| KR20030065723A (en) | 2003-08-09 |
| JP2003222368A (en) | 2003-08-08 |
| KR100430004B1 (en) | 2004-05-03 |
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Granted publication date: 20051019 Termination date: 20171115 |
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