CN100504214C - Air conditioner and its control method - Google Patents
Air conditioner and its control method Download PDFInfo
- Publication number
- CN100504214C CN100504214C CNB2004100907462A CN200410090746A CN100504214C CN 100504214 C CN100504214 C CN 100504214C CN B2004100907462 A CNB2004100907462 A CN B2004100907462A CN 200410090746 A CN200410090746 A CN 200410090746A CN 100504214 C CN100504214 C CN 100504214C
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- compressor
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- heat exchanger
- air conditioner
- cross valve
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Abstract
The invention provides an air conditioner which can restart the stopped compressor in advance under the condition that one compressor is stopped in the state of the rotation of two compressors through capability control. The invention is made into a structure that before starting the stopped compressor, a four-way valve is reversed in specified time with pressure balance at once.
Description
Technical field
The present invention relates to the compressor start control method under the kind of refrigeration cycle that has connected a plurality of compressors side by side.
Background technology
Disclose in the Te Kaiping 7-174418 communique and be the air conditioner of on high-tension side compressor in many closed containers of a kind of existing connection arranged side by side.In Fig. 3, non-return valve 13 and 23 prevents that respectively cold-producing medium from flowing in the second big compressor of the first little compressor 1 of ability and ability.The following formation of kind of refrigeration cycle.
The ring-type connection constitutes kind of refrigeration cycle with the lower part successively, that is: outdoor heat converter 4; Decompressor 7a, the 7b, 7c, the 7d that possess totally-enclosed function; Indoor side heat exchanger 8a, 8b, 8c, 8d; Storage heater 5; Be communicated with in the fuel head of one end by first compressor 1 regulation and the closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop 11 of damping unit 12; Connection in the fuel head of one end by second compressor 2 regulation and the closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop 21 of damping unit 22.
In above-mentioned existing structure, because loop 11 and 21 forms the bypass of kind of refrigeration cycle, so cause ability low.Therefore, in the scope that can keep pasta, damping unit 12,22 is set big as far as possible resistance.The result has spent the time in pressure balance.Especially, under the state that first compressor 1 and 2 two compressors of second compressor all turn round, stopped a compressor in handling capacity control, for example under the situation of second compressor 2, spent the time on the pressure in the closed container in second compressor 2 that balance has stopped and the pressure of suction side.Therefore, when load rises and will start second compressor once again, must wait by the time pressure balance.
Summary of the invention
The present invention will solve above-mentioned existing problem, provides a kind of and possesses under the situation that the compressor of having wanted will to stop earlier owing to burden requirement once more starts, and can shift to an earlier date the air conditioner of the control module that pressure balance starts.
The invention provides a kind of air conditioner, it is characterized in that: be to have: many connect side by side and closed container in be on high-tension side compressor; Be arranged on the non-return valve of the discharge side of above-mentioned compressor; Cross valve; First heat exchanger; Decompressor; Second heat exchanger; Be communicated with in the fuel head of one end by above-mentioned compressor regulation and the closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop of damping unit; Control device with air conditioner; Above-mentioned control device possessed before the starting above-mentioned compressor, at the appointed time the control module that above-mentioned cross valve is reversed.
In addition, the invention provides a kind of control method of air conditioner, this air conditioner has: many connect side by side in the closed container on high-tension side compressor, are arranged on the non-return valve of the discharge side of above-mentioned compressor; Cross valve; First heat exchanger; Decompressor; Second heat exchanger; One end is communicated with in the fuel head of above-mentioned compressor regulation and closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop of damping unit, this control method comprises: before the starting above-mentioned compressor, at the appointed time above-mentioned cross valve is reversed.
Description of drawings
Fig. 1 is the system diagram of the refrigeration system in the embodiment of the present invention 1.
Fig. 2 is the curve map that the pressure in the explanation embodiment of the present invention 1 changes.
Fig. 3 is the system diagram of existing refrigeration system.
Among the figure
1 first compressor, 2 second compressors
4 outdoor heat exchangers, 5 storage heaters
6 cross valves 7,7a, 7b, 7c, 7d decompressor
8 water heat exchanger 8a, 8b, 8c, 8d indoor side heat exchanger
11,21 loops, 12,22 damping units
13,23 non-return valve 17a, 17b, 17c, 17d switch valve
18a, 18b, 18c, 18d indoor heat converter
19 pumps, 31 control device
The specific embodiment
Air conditioner of the present invention, make: have many making of connecting side by side and be on high-tension side compressor in the closed container, be arranged on the non-return valve of the discharge side of above-mentioned compressor, cross valve, outdoor heat exchanger, decompressor, the heat exchanger that carries out heat exchange with water, the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop of damping unit with being communicated with in the fuel head of an end by above-mentioned compressor regulation and the closed container, and possess the structure of the control module that above-mentioned cross valve is reversed was at the appointed time arranged before the starting above-mentioned compressor.Like this, can carry out pressure balance at once, so can start at any time.
Moreover, control module of the present invention is under the situation of the compressor that the compressor more than on-stream starting has stopped, after the compressor in having stopped above-mentioned running, make at the appointed time after the cross valve counter-rotating, make necessary compressor start.So, can reduce the counter-rotating number of times of cross valve and prolong life-span of cross valve.
Below, with reference to the accompanying drawings embodiments of the present invention are described.In addition, present embodiment does not limit the present invention.Moreover, to the additional same-sign of existing same structure, and detailed.
(embodiment 1)
Utilize Fig. 1 that embodiment 1 is described.Among Fig. 1, water heat exchanger 8, each indoor heat converter 18a, 18b, 18c, 18d, switch valve 17a, 17b, 17c, 17d, pump 19 etc. that the cold-producing medium in the kind of refrigeration cycle mobile switched to the cross valve 6, decompressor 7 of air-cooling system, heater unit, carries out heat exchange with water have been expressed.
And water loop ring-type connects water heat exchanger 8, indoor heat converter 18a, 18b, 18c, 18d, switch valve 17a, 17b, 17c, 17d, pump 19.
Moreover, refrigeration system, also possess have timer unit, control is to the control device 31 of coil (not shown) energising of the motor (not shown) of the motor (not shown) of first compressor 1, second compressor 2, cross valve 6.
Below the action of the air conditioner that possesses above structure is described.Be under the cold air state at cross valve 6, and first compressor 1,2 runnings of second compressor time, cold-producing medium flows through outdoor heat converter 4, decompressor 7, water heat exchanger 8, storage heater 5 in regular turn.
In water heat exchanger 8, cool off by the water of low pressure refrigerant water loop, pump 19 is to each indoor water that has cooled off of sending to, and freezes by heat exchanger 18a, 18b, 18c, 18d.
At this moment, in kind of refrigeration cycle, in the closed container of two compressors and outdoor heat converter 4 in cold-producing medium become high pressure.And the cold-producing medium in water heat exchanger 8 and the storage heater 5 becomes low pressure.
Next, the on-stream indoor load of two compressors reduces, and for example, stops first compressor 1 entering, and only makes under the situation of the ability control running that second compressor 2 remains in operation, and becomes following state.Because the cold-producing medium in the closed container of first compressor 1, the discharge pipe side is turned off by non-return valve 13, so, only be communicated with by loop 11 with the suction side.
Be depressed by the pressure in the closed container, and oil and cold-producing medium in first compressor 1, flow into the suction side via loop 11.As a result, though the pressure decline in first compressor 1, because damping unit 12 is arranged, so pressure slowly descends.
Because forming the bypass of kind of refrigeration cycle, loop 11,21 causes ability drop, so damping unit 12,22 in the scope that can keep pasta, is established big resistance as much as possible.As a result, in pressure balance, expended the time.
When load is lighter, as shown in Figure 2, clearly make pressure balance need more than 8 minutes.Next, increase once again at load, handling capacity control is turned round first compressor to be needed in 8 minutes, and for example when 5 minutes took place, differential pressure was also at 2kgf/cm
2More than.Therefore, can not start like this and must wait for 3 minutes nearly.
Therefore, in second compressor 2 in shutting down, make cross valve 6 counter-rotatings and after 5 seconds, make cross valve 6 turn back to original position.So, then the pressure in the kind of refrigeration cycle is the same substantially, enter can starting compressor state.That is to say, cross valve 6 is turned back to after the original position, if first compressor 1, second compressor 2 all start, then can be with turning back to two runnings about 5 seconds, so can not produce very big delay yet and can follow the trail of to running change request based on the compressor of ability control.
Moreover, under the situation that has stopped all compressors, because cold-producing medium flows in the decompressor 7, so carried out pressure balance with about 3 minutes.Therefore, generally speaking, restart and to wait for 3 minutes control.But,, then need not to wait for 3 minutes and just can start if adopt the control method of the present invention that makes these cross valve 6 counter-rotatings.
In addition, because cross valve 6 is in case counter-rotating, then cold-producing medium can flow out without a break, so can produce mobile of cold-producing medium in kind of refrigeration cycle.But air conditioner of the present invention has been separated into kind of refrigeration cycle and water circulation by water heat exchanger 8.
That is, because kind of refrigeration cycle and the indoor of human living space are separated,, the circulation sound of cold-producing medium can not become problem so can not being communicated to an indoor side.
(embodiment 2)
In embodiments of the present invention 2, temperature does not in doors arrive under the state of design temperature, that is, when only any one compressor in a plurality of compressors turns round, make cross valve 6 counter-rotatings promote pressure balanced work.So, because reduce the counter-rotating number of times of cross valve 6, so can prolong the life-span of cross valve 6.
As previously discussed, air conditioner of the present invention, can carry out pressure balance at control module by making cross valve counter-rotating at the appointed time before starting compressor at once, and at any time can start.
In addition, the so-called a plurality of compressors among the present invention are meant more than two that the platform number of the upper limit is decided by the necessary environment of air conditioner.
Air conditioner of the present invention, make cold water or warm water and the water of making is sent in the so-called rudder stock formula air conditioner that each is indoor, carry out the air transfer in kind of refrigeration cycle, it can be widely used in having the air conditioner of the kind of refrigeration cycle of a plurality of compressors of connection arranged side by side.
Claims (6)
1. air conditioner is characterized in that:
Be to have:
Many connect side by side and closed container in be on high-tension side compressor;
Be arranged on the non-return valve of the discharge side of above-mentioned compressor;
Cross valve;
First heat exchanger;
Decompressor;
Second heat exchanger;
One end is communicated with in the fuel head of above-mentioned compressor regulation and closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop of damping unit; With
The control device of air conditioner;
Above-mentioned control device possesses the control module that the above-mentioned cross valve that reversed is at the appointed time arranged before the starting above-mentioned compressor.
2. air conditioner according to claim 1 is characterized in that:
Above-mentioned first heat exchanger is an outdoor heat exchanger, and above-mentioned second heat exchanger is the heat exchanger that carries out heat exchange with water, uses by carrying out carrying out indoor air conditioning with the water of the heat exchanger institute heat exchange of the heat exchange of above-mentioned water.
3. air conditioner according to claim 1 and 2 is characterized in that:
Under the situation of the compressor that the control module of above-mentioned control device is on-stream in the above-mentioned compressor more than, starting has stopped, after the compressor in having stopped above-mentioned running, make at the appointed time after the above-mentioned cross valve counter-rotating, make necessary compressor start.
4. the control method of an air conditioner, this air conditioner has: many connect in the closed container on high-tension side compressor side by side, are arranged on the non-return valve of the discharge side of above-mentioned compressor; Cross valve; First heat exchanger; Decompressor; Second heat exchanger; One end is communicated with in the fuel head of above-mentioned compressor regulation and closed container and the other end and the suction side pipeline that above-mentioned compressor is close to are communicated with and possess the loop of damping unit, it is characterized in that:
This control method comprises:
Before the starting above-mentioned compressor, at the appointed time above-mentioned cross valve is reversed.
5. the control method of air conditioner according to claim 4 is characterized in that:
Above-mentioned first heat exchanger is an outdoor heat exchanger, and above-mentioned second heat exchanger is the heat exchanger that carries out heat exchange with water, uses by carrying out carrying out indoor air conditioning with the water of the heat exchanger institute heat exchange of the heat exchange of above-mentioned water.
6. according to the control method of claim 4 or 5 described air conditioners, it is characterized in that:
Under the situation of the compressor that the control module of above-mentioned control device is on-stream at the compressor more than, starting has stopped, after the compressor in having stopped above-mentioned running, make at the appointed time after the cross valve counter-rotating, make necessary compressor start.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003378279A JP2005140444A (en) | 2003-11-07 | 2003-11-07 | Air conditioner and its control method |
| JP2003378279 | 2003-11-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1614328A CN1614328A (en) | 2005-05-11 |
| CN100504214C true CN100504214C (en) | 2009-06-24 |
Family
ID=34688720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100907462A Expired - Fee Related CN100504214C (en) | 2003-11-07 | 2004-11-08 | Air conditioner and its control method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005140444A (en) |
| CN (1) | CN100504214C (en) |
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-
2003
- 2003-11-07 JP JP2003378279A patent/JP2005140444A/en active Pending
-
2004
- 2004-11-08 CN CNB2004100907462A patent/CN100504214C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1614328A (en) | 2005-05-11 |
| JP2005140444A (en) | 2005-06-02 |
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| SE01 | Entry into force of request for substantive examination | ||
| CI01 | Correction of invention patent gazette |
Correction item: Inventor Correct: Shizuo Otaki False: Tatsutaki Shigeo Number: 19 Volume: 21 |
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| CI02 | Correction of invention patent application |
Correction item: Inventor Correct: Shizuo Otaki False: Tatsutaki Shigeo Number: 19 Page: The title page Volume: 21 |
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Free format text: CORRECT: INVENTOR; FROM: ZHENXIONG COUNTY, LONGSHUANG TO: ZHENXIONG COUNTY, DASHUANG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20101108 |