CN100561062C - Air conditioner temperature controlling method - Google Patents
Air conditioner temperature controlling method Download PDFInfo
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- CN100561062C CN100561062C CNB2005100140243A CN200510014024A CN100561062C CN 100561062 C CN100561062 C CN 100561062C CN B2005100140243 A CNB2005100140243 A CN B2005100140243A CN 200510014024 A CN200510014024 A CN 200510014024A CN 100561062 C CN100561062 C CN 100561062C
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Abstract
The present invention discloses a kind of air conditioner temperature controlling method, comprises the stage whether air-conditioning is confirmed with refrigeration mode work; If with refrigeration mode work, confirm then whether outdoor temperature is lower than T1 ℃ stage; If outdoor temperature is lower than T1 ℃, control object when then exporting the pipe arrangement temperature as the control indoor temperature with indoor heat converter, frequency to electromagnetic expanding valve is controlled, if outdoor temperature is higher than T1 ℃, the control object during as the control indoor temperature then with indoor heat converter inlet pipe arrangement temperature, the stage that the frequency of electromagnetic expanding valve is controlled.The invention has the beneficial effects as follows: air conditioner temperature controlling method of the present invention can solve because the variety of issue of superheating heat exchanger degree generation in can not the control room.In outdoor temperature very high summer, also can form the optimal refrigerant recurrent state, control the temperature of the interior space effectively.
Description
Technical field
What the present invention relates to is air conditioner, particularly be the air conditioner temperature-controlled process.
Background technology
Air-conditioning is arranged on spaces such as room, room, office or business shop, and temperature, humidity, dustiness and the air-flow of room air carried out.Usually corresponding to an indoor set off-premises station is set.But when having a plurality of room, adopt above-mentioned adjusting, form pleasant environment.Air-conditioning can be divided into a bodily form substantially and divide bodily form structure, divides bodily form sky to need to be provided with respectively a plurality of off-premises stations corresponding with each room indoor set.Not only influence architectural appearance, and cost of idleness, and take very big space.
Therefore, developing central air-conditioning at present, central air-conditioning is to be connected many indoor sets with an off-premises station, simultaneously each room is freezed, heats.
Fig. 1 is a prior art central air-conditioning refrigerant circulation block diagram.
Above-mentioned central air-conditioning has and is arranged on indoor indoor unit 10 and is arranged on outdoor outdoor unit 1.Indoor unit 10 has the refrigeration of execution, several indoor heat converter 11a, 11b of heat-production functions, 11c.Outdoor unit 1 has compressor with variable 2 and constant speed compressor 4 that refrigerant is compressed, allow the outdoor heat converter 6 of refrigerant heat release of compression and the rear that is arranged on outdoor heat converter 6, touches the outdoor fan 8 of into refrigerant heat release.Refrigerant flow direction during with refrigerating operaton is as the criterion, and the downstream of outdoor heat converter 6 is provided with electromagnetic expanding valve 13a, 13b, the 13c that allows refrigerant obtain puffing before flowing into respective chambers heat exchanger 11a, 11b, 11c.
Above-mentioned constant speed compressor 4 and compressor with variable 2 have with the maximum refrigeration of indoor unit respectively, heat load 50% corresponding compressed capability, and the outlet side of each compressor was joined before refrigerant inflow outdoor heat exchanger 6 mutually.
Below, central air conditioner refrigerating operation is described (refrigerating operaton).The HTHP gaseous coolant of compressor 2,4 compressions is flow through in the process of outdoor heat converter 6 behind outdoor heat converter 6 by cross valve (figure slightly) water conservancy diversion, is condensed into the liquid refrigerant of HTHP.The liquid refrigerant of HTHP from outdoor heat converter 6 flows out is transformed into the low-temp low-pressure state, again inflow indoor heat exchanger 11a, 11b, 11c when flowing through electromagnetic expanding valve 13a, 13b, 13c.The refrigerant that flows into is evaporated into gaseous coolant, by the suction side of cross valve (figure slightly) water conservancy diversion to compressor 2,4.Promptly, refrigerant is with the path of compressor 2,4 → outdoor heat converter, 6 → electromagnetic expanding valve 13a, 13b, 13c → indoor heat converter 11a, 11b, 11c → compressor 2,4, circulate repeatedly, reduce the space temperature that is provided with indoor heat converter 11a, 11b, 11c.
When heating, the HTHP refrigerant that compressor 2,4 is discharged, under the effect of cross valve (figure is slightly), inflow indoor heat exchanger 11a, 11b, 11c.After the HTHP refrigerant of inflow indoor heat exchanger 11a, 11b, 11c and room air carry out heat exchange, be varied to the low-temp low-pressure gaseous coolant when flowing through electromagnetic expanding valve 13a, 13b, 13c, and flow through outdoor heat converter 6, flow into again in the compressor 2,4.Promptly, refrigerant is with the path of compressor 2,4 → indoor heat converter 11a, 11b, 11c → electromagnetic expanding valve 13a, 13b, 13c → outdoor heat converter 6 → compressor 2,4, circulate repeatedly, improve the space temperature that is provided with indoor heat converter 11a, 11b, 11c.
Compare with the prior art air-conditioning that is connected an indoor set on the off-premises station, central air-conditioning can utilize an off-premises station simultaneously a plurality of rooms to be freezed, heat, and its power consumption, expense and aspect, space all have advantage.
For central air-conditioning, can be controlled at design temperature to the temperature of the interior space by the evaporating temperature of control indoor heat converter 11a, 11b, 11c.To the evaporating temperature of indoor heat converter, can control by the opening degree of control electromagnetic expanding valve 13a, 13b, 13c.Such as, in the process of freezing, improving the opening degree of electromagnetic expanding valve 13a, 13b, 13c, the coolant quantity of inflow indoor heat exchanger 11a, 11b, 11c can increase, and can allow indoor temperature descend quickly.On the contrary, when reducing the opening degree of electromagnetic expanding valve 13a, 13b, 13c, the coolant quantity of inflow indoor heat exchanger is lowered, and the evaporating temperature of indoor heat converter is slowly descended, and can reduce the temperature of the interior space lentamente.
During by indoor heat converter 11a, 11b, 11c control evaporating temperature, usually the outlet pipe arrangement temperature of indoor heat converter as the control object, rather than the temperature of control indoor heat converter.That is, allow indoor heat converter outlet pipe arrangement have the temperature that can form the optimal refrigerant circulation, just can control indoor temperature effectively.Here, as the outlet pipe arrangement of control object, the account form of its target temperature is the inlet temperature mode of the degree of superheat in addition of indoor heat converter.
But, only the indoor heat converter outlet temperature as the temperature-controlled process of controlling object, be not suitable for some state, be the condition of high temperature more than 39 ℃ such as outdoor temperature.This is to be difficult to the certain degree of superheat of maintenance when being in the condition of high temperature because of outdoor temperature.Thereby the optimal refrigerant circulation of indoor temperature is controlled in very difficult formation effectively.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, a kind of control object when changing the control indoor temperature according to outdoor temperature is provided, form the air conditioner temperature controlling method of optimal refrigerant recurrent state.
The technical scheme that solves the problems of the technologies described above is:
A kind of air conditioner temperature controlling method comprises the stage whether air-conditioning is confirmed with refrigeration mode work; If with refrigeration mode work, confirm then whether outdoor temperature is lower than/equals T1 ℃ stage; If outdoor temperature is lower than/equals T1 ℃, control object when then exporting the pipe arrangement temperature as the control indoor temperature with indoor heat converter, frequency to electromagnetic expanding valve is controlled, if outdoor temperature is higher than T1 ℃, the control object during as the control indoor temperature then with indoor heat converter inlet pipe arrangement temperature, the stage that the frequency of electromagnetic expanding valve is controlled.
The target temperature of above-mentioned outlet pipe arrangement temperature is " inlet pipe arrangement temperature+degree of superheat ", and the target temperature of above-mentioned inlet pipe arrangement temperature is " a target evaporating temperature * outdoor temperature penalty coefficient * indoor temperature penalty coefficient ".
The invention has the beneficial effects as follows: air conditioner temperature controlling method of the present invention, if outdoor temperature be lower than/equal T1 ℃ with indoor heat converter outlet pipe arrangement temperature the control object during as the control indoor temperature, if outdoor temperature is higher than T1 ℃, the control object during as the control indoor temperature with indoor heat converter inlet pipe arrangement temperature then can solve the variety of issue owing to superheating heat exchanger degree generation in can not the control room.
In outdoor temperature very high summer, also can form the optimal refrigerant recurrent state, control the temperature of the interior space effectively.
Description of drawings
Fig. 1 is a prior art central air-conditioning refrigerant circulation block diagram;
Fig. 2 is the central air-conditioning entire block diagram of one embodiment of the invention;
Fig. 3 is used for the structured flowchart of air-conditioner temperature control for the present invention;
Fig. 4 is an air conditioner temperature controlling method flow chart of the present invention.
＜accompanying drawing critical piece remarks 〉
140: indoor set 142: indoor heat converter
144: indoor fan 162: electromagnetic expanding valve
180: off-premises station 182: compressor with variable
184: constant speed compressor 186: lubricating oil separator
187: electromagnetic expanding valve 188: return duct
192: cross valve 190: fluid reservoir
194: outdoor heat converter 196: outdoor fan
200: inlet pipe arrangement temperature sensor 300: outlet pipe arrangement temperature sensor
400: outdoor temperature sensor 500: control part
The specific embodiment
The present invention is the invention of relevant air conditioner temperature controlling method.Air conditioner temperature controlling method of the present invention comprises the stage whether air-conditioning is confirmed with refrigeration mode work; If with refrigeration mode work, confirm then whether outdoor temperature is lower than T1 ℃ stage; If outdoor temperature is lower than T1 ℃, control object when then exporting the pipe arrangement temperature as the control indoor temperature with indoor heat converter, frequency to electromagnetic expanding valve is controlled, if outdoor temperature is higher than T1 ℃, the control object during as the control indoor temperature then with indoor heat converter inlet pipe arrangement temperature, the stage that the frequency of electromagnetic expanding valve is controlled.
The target temperature of above-mentioned outlet pipe arrangement temperature is " inlet pipe arrangement temperature+degree of superheat ", and the target temperature of above-mentioned inlet pipe arrangement temperature is " a target evaporating temperature * outdoor temperature penalty coefficient * indoor temperature penalty coefficient ".
The present invention even outdoor temperature is higher than 39 ℃, also can form the optimal refrigerant recurrent state when carrying out refrigerating operaton, can control the temperature of the interior space effectively.
With reference to the accompanying drawings air conditioner temperature controlling method of the present invention is described in more details.
Fig. 2 is the central air-conditioning entire block diagram of one embodiment of the invention.
Each indoor each indoor set 140 that is respectively equipped with, indoor set 140 has indoor heat converter 142 and indoor fan 144.This indoor set 140 links to each other with outdoor off-premises station 180 by pipe arrangement.
The central compressor that is made of compressor with variable 182 and constant speed compressor 184 is installed on off-premises station 180, and these compressors are used for the refrigerant of circulation air-conditioning is compressed into high-temperature high-pressure state, and discharge above-mentioned refrigerant.On the outlet side of compressor with variable 182, the lubricating oil separator 186 that is used to separate refrigerant and lubricating oil is installed.The lubricating oil that lubricating oil separator 186 is discharged from compressor with variable 182 outlet sides and the mixture of refrigerant, isolate lubricating oil after, allow refrigerant recycle.Lubricating oil in the lubricating oil separator 186 flows to the input of compressor with variable 182 by magnetic valve 187 and return duct 188.
The refrigerant that each outlet side of each compressor (182 and 184) is discharged, when flowing through lubricating oil separator 186, its lubricating oil that contains is removed, and confluxes when flowing through lubricating oil collecting pipe 189, flows in the cross valve 192.The refrigerant that cross valve 192 allows each compressor (182 and 184) suck or to discharge, circulate with the path that accords with operation of air conditioner mode (freeze or heat), allow refrigerant flow during refrigeration, allow refrigerant flow when heating by the dotted arrow direction of Fig. 2 by the solid arrow direction of Fig. 2.Refrigerant inflow outdoor heat exchanger 194 when refrigerating operaton that each compressor 182,184 is discharged; Inflow indoor heat exchanger 140 when heating operation.
One end of above-mentioned outdoor heat converter 194 is connected cross valve 192, and its other end is connected on the electromagnetic expanding valve 162.When therefore, flowing through outdoor heat converter 194 and the outdoor air refrigerant that carries out heat exchange can flow through electromagnetic expanding valve 162.Electromagnetic expanding valve 162 is to allow the refrigerant puffing become the device of low-temp low-pressure state.After becoming the low-temp low-pressure refrigerant when flowing through electromagnetic expanding valve 162, flow through receiver 164 and drier 166 after, flow into indoor set 140.
Flow into the low-temp low-pressure refrigerant of indoor set 140, under the effect of indoor fan 144, flow through indoor heat converter 142,, reduce indoor temperature by carrying out heat exchange with room air.
One end of above-mentioned indoor set 140 is connected on the cross valve 192, finishes the refrigerant of heat exchange when flowing through indoor heat converter 142, flow into cross valve 140 after, by its water conservancy diversion in fluid reservoir 190.Fluid reservoir 190 is connected the suction portion of compressor with variable 182 and constant speed compressor 184, and the liquid refrigerants of failing when preventing to flow through indoor heat converter 140 to obtain gasifying flows in each compressor 182,184.
In addition, on the suction side and outlet side of indoor heat converter 142, be respectively equipped with inlet pipe arrangement temperature sensor 200 and outlet pipe arrangement temperature sensor 300.Inlet pipe arrangement temperature sensor 200 is used to measure the refrigerant temperature of inflow indoor heat exchanger 142, and outlet pipe arrangement temperature sensor 300 is used to measure the refrigerant temperature that flows through behind the indoor heat converter 142.The temperature that inlet pipe arrangement temperature sensor 200 and outlet pipe arrangement temperature sensor 300 are measured is for being used for temperature controlling object in the conditioning chamber.
After control part (figure slightly) reads in the temperature value of outlet pipe arrangement temperature sensor or inlet pipe arrangement temperature sensor measurement, if these values are inconsistent with the target temperature value that calculates, then by controlling the opening degree of electromagnetic expanding valve, regulate the coolant quantity of inflow indoor heat exchanger 142, make actual temperature near target temperature.Thereby, can be by the relatively temperature value of each pipe arrangement temperature sensor measurement and the target temperature that control part calculates, and regulate with this opening degree to electromagnetic expanding valve, the temperature of the interior space is controlled near the design temperature.
Fig. 3 is used for the structured flowchart of air-conditioner temperature control for the present invention; Fig. 4 is an air conditioner temperature controlling method flow chart of the present invention.
Air conditioner temperature controlling method of the present invention according to outdoor temperature, changes its control object indoor temperature being adjusted in the process of design temperature.Promptly, if outdoor temperature is lower than T1 ℃, such as 39 ℃, control object when then the temperature of when freezing operation outlet pipe arrangement temperature sensor 300 being measured is as the control indoor temperature, if outdoor temperature is higher than T1 ℃, such as 39 ℃, then the temperature that inlet pipe arrangement temperature sensor 200 is measured is as the control object.
The present invention promptly, makes outdoor temperature be in the condition of high temperature when carrying out refrigerating operaton, also can form the optimal refrigerant recurrent state, can control the temperature of the interior space effectively.
That is, in the prior art, no matter outdoor temperature height, only the control object use of the outlet pipe arrangement temperature of indoor heat converter when regulating indoor temperature.At this moment, as the target temperature of outlet pipe arrangement temperature of control object temperature, the inlet pipe arrangement temperature by indoor heat converter adds the mode of the degree of superheat and calculates.The above-mentioned degree of superheat is the outlet pipe arrangement temperature of indoor heat converter and the difference of inlet pipe arrangement temperature.But when outdoor temperature is higher than T1 ℃, during such as 39 ℃, the condensation temperature of indoor heat converter is risen, and the control of indoor set is difficult to be undertaken by predicted value.Therefore when outdoor temperature is higher than T1 ℃, be necessary with the irrelevant alternative original control object of temperature of the degree of superheat.
The present invention is lower than T1 ℃ and when being higher than T1 ℃ in temperature, adopts different control object temperature respectively.Below, with reference to accompanying drawing 3 and Fig. 4, temperature-controlled process of the present invention is elaborated.
When air-conditioning carries out work with refrigeration mode (S100 stage), whether the outdoor temperature that 500 pairs of outdoor temperature sensor of control part 400 are measured is lower than T1 ℃,, judges (S110 stage) such as 39 ℃.
Next, in the stage, be lower than T1 ℃ if be judged as temperature at above-mentioned S110, the control object temperature when then indoor heat converter being exported the pipe arrangement temperature as the adjusting indoor temperature is used (S120 stage).As mentioned above, as the control object temperature, the desired value of above-mentioned outlet pipe arrangement temperature is the in addition result of the indoor heat converter degree of superheat (that is indoor heat converter outlet pipe arrangement temperature=inlet pipe arrangement temperature+degree of superheat) of indoor heat converter inlet temperature.
If confirming the result is used to regulate the above-mentioned of temperature to be higher than desired value (S130 stage) as the outlet pipe arrangement temperature of controlling object temperature, then control part 500 improves the frequency of electromagnetic expanding valve 162, increase the coolant quantity of inflow indoor heat exchanger, reduce outlet pipe arrangement temperature (S140 stage) as the control object temperature, be lower than target temperature (S150 stage) if confirm as above-mentioned outlet pipe arrangement temperature, then control part 500 reduces the frequency of electromagnetic expanding valve 162, reduce the coolant quantity of inflow indoor heat exchanger, improve above-mentioned outlet pipe arrangement temperature (S160 stage) as the control object temperature.If outlet pipe arrangement temperature equals target temperature, then allow the frequency of electromagnetic expanding valve 162 remain unchanged (S170 stage), allow keep initial value as the outlet pipe arrangement temperature of controlling object temperature.
In stage, be higher than T1 ℃ at above-mentioned S110, then the control object temperature of indoor heat converter inlet pipe arrangement temperature when regulating indoor temperature used (S180 stage) if be judged as temperature.At this moment, as the control object temperature, the desired value of inlet pipe arrangement temperature is calculated by the mode of " target evaporating temperature * outdoor temperature penalty coefficient * indoor temperature penalty coefficient ".
Here, " target evaporating temperature " is the evaporating temperature of indoor heat converter, and " outdoor penalty coefficient " be, with T1 ℃, becomes a kind of ratio value that diminishes when big temperature descends when rising for the temperature of " 1 " such as 39 ℃ a reference values.The said reference indoor temperature has certain relation with design." indoor penalty coefficient " be, is that the temperature of " 1 " becomes big, a kind of ratio value that temperature diminishes when descending when rising with a reference value of benchmark indoor temperature.The said reference indoor temperature has certain relation with design.
Such as, the target evaporating temperature is " 11 ", outdoor temperature is higher than T1 ℃, its outdoor temperature penalty coefficient is " 1.2 ", indoor temperature is higher than a reference value, when its indoor temperature penalty coefficient is " 1.1 ", the above-mentioned target temperature of inlet pipe arrangement as the control object be " 14.52).Thereby control part 500 is can allow indoor heat converter inlet pipe arrangement temperature keep the mode of above-mentioned target temperature, and the frequency of control electromagnetic expanding valve 162 gets final product.
Be higher than desired value (S190 stage) if confirm the result for above-mentioned inlet pipe arrangement temperature as the control object temperature, then control part 500 improves the frequency of electromagnetic expanding valve 162, increase the coolant quantity of inflow indoor heat exchanger, reduce above-mentioned inlet pipe arrangement temperature (S200 stage) as the control object temperature, be lower than target temperature (S210 stage) if confirm as above-mentioned inlet pipe arrangement temperature, then control part 500 reduces the frequency of electromagnetic expanding valve 162, reduce the coolant quantity of inflow indoor heat exchanger, improve above-mentioned inlet pipe arrangement temperature (S220 stage) as the control object temperature.If inlet pipe arrangement temperature equals target temperature, then allow the frequency of electromagnetic expanding valve 162 remain unchanged (S230 stage), allow keep initial value as the outlet pipe arrangement temperature of controlling object temperature.
Claims (1)
1. air conditioner temperature controlling method is characterized in that: comprise the stage whether air-conditioning is confirmed with refrigeration mode work; If with refrigeration mode work, confirm then whether outdoor temperature is lower than/equals T1 ℃ stage; If outdoor temperature is lower than/equals T1 ℃, control object when then exporting the pipe arrangement temperature as the control indoor temperature with indoor heat converter, frequency to electromagnetic expanding valve is controlled, if outdoor temperature is higher than T1 ℃, the control object during as the control indoor temperature then with indoor heat converter inlet pipe arrangement temperature, the stage that the frequency of electromagnetic expanding valve is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100140243A CN100561062C (en) | 2005-06-28 | 2005-06-28 | Air conditioner temperature controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100140243A CN100561062C (en) | 2005-06-28 | 2005-06-28 | Air conditioner temperature controlling method |
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| Publication Number | Publication Date |
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| CN1888660A CN1888660A (en) | 2007-01-03 |
| CN100561062C true CN100561062C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100140243A Expired - Fee Related CN100561062C (en) | 2005-06-28 | 2005-06-28 | Air conditioner temperature controlling method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102897B (en) * | 2009-12-18 | 2013-04-10 | 财团法人工业技术研究院 | Temperature control method for detachable air-conditioning equipment |
| CN102486327B (en) * | 2010-12-02 | 2016-04-27 | 乐金电子(天津)电器有限公司 | A kind of cold treatment method for temperature of air-conditioner pipe |
| CN103335375B (en) * | 2013-06-21 | 2016-06-01 | 唐铜 | Silicon carbide controls energy-conservation device and air-conditioning thereof |
| CN105588276A (en) * | 2015-12-10 | 2016-05-18 | 海信（广东）空调有限公司 | Air conditioner and control method thereof |
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Granted publication date: 20091118 Termination date: 20110628 |