CN1041555C - Method for controlling of air-conditioner - Google Patents
Method for controlling of air-conditioner Download PDFInfo
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- CN1041555C CN1041555C CN92111262A CN92111262A CN1041555C CN 1041555 C CN1041555 C CN 1041555C CN 92111262 A CN92111262 A CN 92111262A CN 92111262 A CN92111262 A CN 92111262A CN 1041555 C CN1041555 C CN 1041555C
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- temperature
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- indoor set
- control method
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Abstract
The present invention relates to a control method for preventing oversize supply quantity of refrigerating agents which are conveyed to indoor devices, and the control method is used for an air conditioner having the structure that an outdoor device is connected with a plurality of indoor devices. The control method comprises the steps that the temperature E0 of heat exchangers of the indoor devices is measured(step S1); if the temperature E0 of the indoor heat exchangers is larger than a specified value (step S5), the opening degree of an electric valve for regulating the supply quantity of the refrigerating agents is corrected towards a direction that the opening degree is reduced forcibly (step S7). The correction, and the correction (step S10 and step S14) of the opening degree of the electric valve carried out for other targets can be carried out independently and can also be carried out conjointly.
Description
The present invention relates on an outdoor location, to be connected in the air regulator of many indoor sets control to the cold-producing medium quantity delivered of each indoor set.
For example specially permit in open the flat 2-8231 of communique number and disclosed this control technology that has earlier in Japan.
This throttle valve opening that has control technology to regulate cold-producing medium earlier is controlled at temperature difference between the heat exchanger gateway of each indoor set on the set-point.
But, when adopting this prior art, when pressing the heating system running, if it is excessive to be sent to the cold-producing medium quantity delivered of certain indoor set, the problem that the heat exchanger temperature of this indoor set rises too high can appear then.
The objective of the invention is to prevent the overload when turning round by heating system.
The invention is characterized in, on an outdoor location, be connected to many indoor sets with refrigerant tubing, constitute freeze cycle, and have on the air regulator of regulating the electrically operated valve that the refrigerant amount be sent to each indoor set uses, has basis by carrying out the value that fuzzy logic inference draws based on the temperature difference of evaporator temperature in the freeze cycle or condenser temperature and target temperature and the time variation amount of this temperature difference, revise the process of motor-driven valve aperture, when moving,, the temperature of indoor set indoor side heat exchanger then is worth in accordance with regulations to revise the open process of electrically operated valve not according to fuzzy logic inference and the matter that draws if surpassing setting with heating system.
In addition, characteristics of the present invention are, on an outdoor location, connect many indoor sets and constitute freeze cycle with refrigerant tubing, have the air regulator of the motor-driven valve that is used to regulate the refrigerant amount that is sent to each indoor set, have according to by the process of carrying out the value correction motor-driven valve aperture that fuzzy logic inference draws based on the time variation amount of the temperature difference of the temperature of the evaporimeter in the freeze cycle or condenser temperature and target temperature and target temperature and this temperature difference, if the indoor side heat exchanger temperature of indoor set surpasses set point of temperature, then the value that draws by fuzzy logic inference adds that value that setting obtains is to revise the process of motor-driven valve aperture when carrying out with heating system.
When carrying out with heating system, indoor heat converter just degree surpasses specified reference value the time, the motor-driven valve that will be used to regulate the cold-producing medium quantity delivered forcibly controls to the direction of cutting out.This control can be independent of the motor-driven valve control of other purposes, also can be with it in conjunction with carrying out.
As described above, if, then when the indoor heat converter temperature is high, forcibly close the correction of refrigerant flow valve, so can prevent to supply with excessive cold-producing medium to indoor heat converter by the present invention.
Description of drawings is as follows:
Fig. 1 is a flow chart, is illustrated among control method first embodiment of the present invention, the running of each indoor set when pressing the heating system operation.
Fig. 2 is a flow chart, is illustrated among second embodiment of control method of the present invention, the action of each indoor set when pressing the heating system operation.
Fig. 3 is the freeze cycle that is applicable to the air regulator of Fig. 1 and Fig. 2 embodiment.
Electric hookup between each device of the air regulator of Fig. 4 presentation graphs 3.
Fig. 5 is the figure of the variation of the variation of the temperature EO of indoor heat converter among the embodiment of presentation graphs 1 and indoor set running.
The action schematic diagram of each indoor set when the refrigeration modes operation is pressed in Fig. 6 explanation.
Symbol description is unitedly described as follows among the figure:
1. outdoor location 6. refrigerant condensers
2. indoor set 7. cross valves
3. indoor set 8. outdoor heat exchangers
4. indoor set 11. indoor side heat exchangers
5. indoor set 12. motor-driven valves
21. temperature sensor
22. temperature sensor
23. temperature sensor
24. temperature sensor
25. holding wire
Referring now to Fig. 3, the freeze cycle example that the present invention is suitable for is described.Fig. 3 is that an outdoor location 1 is connected to the refrigerant loop figure under the situation of four indoor sets 2～5.
On the outdoor location 1 of Fig. 3, Fig. 6 is a refrigerant condenser, the 7th, and cross valve, the 8th, outdoor heat exchanger, the 9th, decompressor, the 10th, accumulator.Indoor set 2～5 is used refrigerant tubing 13～16 respectively, and 17～20 link to each other with outdoor location 1.Indoor set 2～5 identical, thus be that example is illustrated only with indoor set 5, the 11st, indoor side heat exchanger, the 12nd, cold-producing medium, the motor-driven valve of shunt volume control usefulness.
The not shown stepper motor of motor-driven valve 12 usefulness drives, and its aperture (amount of opening) is by the corner decision of stepper motor.As an example, when the variable step number scope of using stepper motor is 0～500 motor-driven valve, the aperture of stepper motor just rotatable counter-rotating can change motor-driven valve.
In Fig. 2,21～24 is temperature sensor.Sensor 21 detects the refrigerant temperature that flows out from cross valve 7 when pressing the refrigeration modes running.Sensor 22 detects the refrigerant temperature that is flowed out by cross valve 7 when pressing the heating system running.The temperature of sensor 23 sensing chamber's outside heat exchangers 8 in addition, the temperature of the inboard heat exchange 11 of sensor 24 sensing chamber.
In this cold-producing medium circulation, when cross valve 7 was state shown in the solid line, indoor side heat exchanger 11 moved with refrigeration modes.In other words, the high-temperature high-pressure refrigerant of compressed machine 6 compressions flows to indoor side heat exchanger 11 by outdoor heat exchanger 8, and condensation takes place at outdoor heat exchanger 8 places cold-producing medium, and at indoor side heat exchanger 11 places evaporation takes place.When cross valve 7 switches to state shown in the dotted line, indoor side heat exchanger 11 turns round with heating system, the cold-producing medium of the HTHP of promptly past compressor 6 compressions flows to outside interchanger 8 by indoor side heat exchanger 11, condensation takes place in cold-producing medium at indoor side heat exchanger 11 places, and evaporates at the outdoor heat exchanger place.
Fig. 4 is illustrated in this air regulator, the state that outdoor location 1 usefulness holding wire 25 links to each other with four indoor sets 2～5.By this holding wire 25, these devices 1～5 each other can receiving and transmitting signal.From refrigerating capacity signal, the room temperature signal that each indoor set 2～5 is all exported CRANK PULSES, refrigeration modes CRANK PULSES, heating system CRANK PULSES, needed, indoor side heat exchanger temperature signal, by the signal (becoming the output of the indoor set of main frame) of capacity correction valve opening, abnormal signal etc.In addition, by the temperature signal of the maximum room temperature signal of outdoor location 1 output, temperature sensor 21～23, refrigeration modes run signal, heating system run signal, defrosting CRANK PULSES, abnormal signal etc.Each installs 1～5 according to the running separately of these signal controlling.
Fig. 1 is a flow chart, and an embodiment of indoor set 2～5 major controls when moving with heating system is described by the present invention.Be illustrated set by step below.
Step S1: measure the temperature EO that indoor set (for example indoor set 5) is provided with the heat exchanger 11 of temperature (room temperature) E in space (a plurality of indoor sets in a room or not in the chummery all can) and this indoor set 5, and be stored in the memory (not shown) of indoor set 5.
Step S2:, step S1 is deposited in the room temperature E and place, the indoor side heat exchanger temperature Eo chamber of the being sent to device 1 of memory by holding wire 25.
Step S3: the maximum of the room temperature E that 1 whole indoor set 2～5 of outdoor location are sent here is as maximum room temperature Emax, and the refrigerant temperature DTC that this maximum room temperature Emax and temperature sensor 22 record is sent to holding wire 25, indoor set receives this maximum room temperature Emax and refrigerant temperature DTC and deposits it in memory.
Step S4: move control normally, that is carry out the wind speed setting of indoor pressure fan and the control that shows.
Step S5: judge whether whether the indoor heat converter temperature Eo that is stored in the memory surpasses set-point, for example surpass 60.If the result for otherwise enter step S6, if EO 〉=60 item proceed to step S7.
Step S6: use 30 seconds timer, one side is carried out the control of step S1～step S5 repeatedly, carries out the following control of step S8 simultaneously in per 30 seconds.
Step S7: judge that at step S5 place if EO 〉=60, then the ratio with 50 pulses is sent out pulse to the drive motors of motor-driven valve between 30 seconds, closes motor-driven valve forcibly.In other words, it is excessive to suppress the cold-producing medium quantity delivered forcibly.This action proceeds to till the state of removing EO 〉=60 always.Do not carry out the following control of step S8 during this period.
Step S8: when EO＜60, carried out a following action of step S8 in per 30 seconds.At this step S8 place, by maximum room temperature Emax that is stored in memory and room temperature E calculate room temperature difference X (=Emax) and the X value deposit memory in.In addition, the room temperature difference is rounded, round up below the decimal point.
Step S9: judge whether X＞Y, when this condition satisfies, that is room temperature difference X proceeds to step S11 when bigger, do not satisfy this condition that is room temperature difference when smaller, proceeds to step S10.In addition, the Y value is a reference value for judging that room temperature extent degree is set.
Step S10: when the room temperature difference is smaller, carry out being undertaken the correction of valve opening by ability.This is controlled at the back and describes in detail.
Step S11: when the room temperature difference was bigger, step S12 and step S13 were carried out in judgement symbol F.F ≠ 1 o'clock, carry out step S14 during F=1.In addition, after carrying out the valve opening correction, step S10 will indicate the F zero clearing at step S15.
Step S12: the aperture pass of motor-driven valve to 1/2X.
Step S13: sign F=1 is set.Thereby, as room temperature difference X during, carry out the control of a step S12 less than a reference value Y, no longer carry out the control of this step S12 later on.
Step S14: alternately adjust the valve opening correction of split ratio and the valve opening correction of being undertaken by ability.Thereby, when room temperature difference X these two kinds of corrections that hocket in per 30 seconds during less than a reference value Y.
In other words, press the operation method of Fig. 1, when indoor side heat exchanger temperature EO is high, does not adjust the valve opening correction of split ratio and the valve opening correction of being undertaken by ability, and revise towards the direction of positive closing motor-driven valve.
Fig. 2 is a flow chart, represents the embodiment of indoor set major control when another presses the heating system operation.Only just press difference do one explanation of the flow chart of refrigeration modes running below with Fig. 1.At step S5 place, item proceed to step S7 if judge EO 〉=60, after revising towards this valve opening direction of positive closing, proceed to step S6 here.In other words, in the control of this Fig. 2, when EO 〉=60, carried out the following control of step S8 in per 30 seconds.In other words, when indoor side heat exchanger temperature EO is high, adjust the valve opening control thirty of split ratio, carry out the valve opening correction undertaken by ability in addition again, revise towards the direction of positive closing motor-driven valve.
Below, describe the valve switch control of above-mentioned adjustment split ratio and the valve opening control of being undertaken by ability in detail.
At first, the valve opening that the adjustment split ratio is described is just being done.In other words, this is that the difference X of the room temperature E that records of the room temperature maximum Emax that records according to whole indoor sets 2～5 and each indoor set changes the control that the aperture of each motor-driven valve is carried out.
Consult Fig. 1, will be added on the stepper motor of motor-driven valve, make the aperture of motor-driven valve only open corresponding amount with room temperature difference X with the pulse of the corresponding step-length number of obtaining at step S8 of room temperature difference X.Room temperature difference X compares with the benchmark of regulation when big, sends to open pulse motor-driven valve is opened, and hour, then sends and closes pulse motor-driven valve cuts out.
The valve opening correction of being undertaken by ability is described below again.In other words, this is that to change motor-driven valve open, makes the condensation temperature of the cold-producing medium in the freeze cycle reach the control of target temperature.
In other words, utilize condensation of refrigerant temperature that temperature sensor 22 records and its target temperature deviation e and last time temperature difference e and the poor Δ e of this temperature difference e, carry out fuzzy logic inference, calculate the correction value of valve opening, then according to this value of calculating, the output pulse is revised the aperture of motor-driven valve.
In addition, this revises the pulse number of usefulness, all is identical for whole indoor sets 2～5.In other words, no matter be that the umber of pulse of any this correction usefulness calculated among the indoor set 2～5 can offer other indoor set.Other indoor sets are used umber of pulse according to this correction, and the aperture of motor-driven valve is revised.Therefore, all the motor-driven valve aperture of indoor set 2～5 is all revised simultaneously.
Fuzzy logic inference can use general rule, so no longer describe in detail.The membership function of the membership function of former piece portion and consequent portion is provided with to such an extent that can obtain optimum valve opening correction value.In addition, the membership function of consequent portion is set in the output of fuzzy reasoning by+4～-4 scope.
The method of calculating this valve opening correction value is not limited to fuzzy reasoning, adopts PID control or L2 intelligence (AI) technology also can.
Fig. 5 represents that to scheme embodiment be example, and with respect to the variation of indoor heat converter temperature EO, the running of indoor set changes.
When surpassing 60 ℃, the temperature EO of indoor heat converter do not carry out fuzzy reasoning, but to motor-driven valve output+50 corrected impulses (direction that motor-driven valve cuts out).At this moment safety valve (for reducing the by-passing valve that the anti-load of compression is established) keeps original pass (OFF) state.The wind speed of control outdoor location (toward the outdoor heat exchanger air-supply of outdoor location) is H (height) or L (low).
In addition, the wind speed of outdoor location according to outside air temperature, changes between H/6, the heat exchange amount of control room outside heat exchangers.
Even sent above-mentioned+50 corrected impulse, in the time of can't reducing indoor heat converter temperature EO, sent+50 pulses, motor-driven valve cuts out in per continuously 30 seconds.
In addition, when indoor heat converter temperature EO further rises to 64 ℃, safety valve is opened, reduced the running ability of compressor, moreover stop the outdoor location air-supply, reduce the heat exchange amount of outdoor heat exchanger.
If take the result of these protection actions, indoor heat exchanger temperature FO has been fallen, then de-preservation action respectively.
More than explanation is situation by heating system operation, and when press refrigeration modes and moving, control action one example of indoor set is shown in Fig. 6.When moving with refrigeration modes, according to room temperature difference X greater than first reference value Y1, less than the second a reference value Y2 (Y1＞Y2), or be between the two, and select to adjust the valve opening correction of split ratio, valve opening correction or two corrections of being undertaken by ability hocket.
Claims (2)
1. the control method of an air regulator, this air regulator is connected to many indoor sets to constitute freeze cycle with refrigerant pipe on an outdoor location, and have respectively and to adjust the motor-driven valve that the refrigerant amount that is sent to each indoor set is used, described control method is characterised in that and contains:
According to carrying out the value that fuzzy logic inference is obtained based on the temperature difference of the evaporator temperature in the above-mentioned freeze cycle or condenser temperature and target temperature and the time variation amount of this temperature difference, the process that the aperture of said electric valve is revised and
When moving by the employing mode, when the indoor side heat exchanger temperature of above-mentioned indoor set surpasses the temperature of regulation, the value of obtaining not according to above-mentioned fuzzy logic inference, and value in accordance with regulations, the process that the said electric valve aperture is revised.
2. the control method of an air regulator, this air regulator is connected to many indoor sets with refrigerant tubing on an outdoor location, constitute freeze cycle, and have the motor-driven valve of respectively the cold-producing medium consumption of supplying with each indoor set being adjusted, described control method is characterised in that and contains:
According to the temperature difference based on evaporator temperature or condenser temperature and target temperature in the above-mentioned freeze cycle, and the time variation amount of this temperature difference carries out fuzzy logic inference and the value obtained, the process that the aperture of said electric valve is revised and
Press heating system when operation, when the temperature of the indoor side heat exchanger of above-mentioned indoor set surpasses the temperature of regulation,, add the process that setting is revised the aperture of said electric valve by the value that above-mentioned fuzzy logic inference draws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111262A CN1041555C (en) | 1992-09-26 | 1992-09-26 | Method for controlling of air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111262A CN1041555C (en) | 1992-09-26 | 1992-09-26 | Method for controlling of air-conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1085310A CN1085310A (en) | 1994-04-13 |
| CN1041555C true CN1041555C (en) | 1999-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92111262A Expired - Fee Related CN1041555C (en) | 1992-09-26 | 1992-09-26 | Method for controlling of air-conditioner |
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| Country | Link |
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| CN (1) | CN1041555C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100546616B1 (en) * | 2004-01-19 | 2006-01-26 | 엘지전자 주식회사 | controling method in the multi airconditioner |
| CN101881498B (en) * | 2009-05-06 | 2012-11-14 | 欧威尔空调科技(中国)有限公司 | Multiple connected air conditioning system and control method thereof |
| CN103375871B (en) * | 2012-04-16 | 2016-02-03 | 珠海格力电器股份有限公司 | The Automatic adjustment method of air-conditioning system ability |
| CN106642607A (en) * | 2015-11-02 | 2017-05-10 | 成都捷本科技有限公司 | Linear control method for split multi-blade regulating air valve |
| CN110285492B (en) * | 2019-06-28 | 2021-07-27 | 广东美的暖通设备有限公司 | Air conditioning system, control device and control system |
| CN112229043A (en) * | 2020-10-19 | 2021-01-15 | 珠海格力电器股份有限公司 | Air conditioner operation method and device, electronic equipment and computer readable medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04190054A (en) * | 1990-11-26 | 1992-07-08 | Matsushita Refrig Co Ltd | Multi-chamber type air conditioner |
| JPH04190055A (en) * | 1990-11-26 | 1992-07-08 | Matsushita Refrig Co Ltd | Multi-chamber type air conditioner |
-
1992
- 1992-09-26 CN CN92111262A patent/CN1041555C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04190054A (en) * | 1990-11-26 | 1992-07-08 | Matsushita Refrig Co Ltd | Multi-chamber type air conditioner |
| JPH04190055A (en) * | 1990-11-26 | 1992-07-08 | Matsushita Refrig Co Ltd | Multi-chamber type air conditioner |
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| CN1085310A (en) | 1994-04-13 |
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Granted publication date: 19990106 Termination date: 20091026 |