CN103499134B - The control method of the temperature difference before and after BRT air-conditioning - Google Patents
The control method of the temperature difference before and after BRT air-conditioning Download PDFInfo
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- CN103499134B CN103499134B CN201310425609.9A CN201310425609A CN103499134B CN 103499134 B CN103499134 B CN 103499134B CN 201310425609 A CN201310425609 A CN 201310425609A CN 103499134 B CN103499134 B CN 103499134B
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Abstract
The control method of the temperature difference before and after BRT air-conditioning of the present invention, described BRT air-conditioning comprises and is arranged on before and after compartment two groups independently roof-mounted air-condition and magnetic valve, connecting line, compressor, generator, executor and wire harness, is: in former air-condition circuits system, increase temperature sensor, magnetic valve and control circuit to the control method of the temperature difference before and after BRT air-conditioning; Sampled by the temperature of described air-conditioner control system to front and back return air inlet, calculate, compare and adjusted and control front and back refrigerant magnetic valve and compressor: when current return air inlet for air-conditioner temperature is lower than rear return air inlet for air-conditioner temperature 2 DEG C, front air conditioner coolant closed electromagnetic valve, makes the refrigerating speed of rear air-conditioning accelerate; When the front and back return air inlet for air-conditioner temperature difference is when identical, front air conditioner coolant magnetic valve reopens; When front and back air-conditioner temperature reaches design temperature, compressor cuts out; The equilibrium of fast public traffic system bus compartment temperature can be ensured, BRT is taken more comfortable.
Description
Technical field
The present invention relates to the design and manufaction technical field of coach air conditioner, specifically, is the control method of the temperature difference before and after fast public traffic system (BRT) bus BRT air-conditioning used.
Background technology
China's city bus development is in recent years very fast, and many large-and-medium size cities establish intercity quick hinge and fast public traffic system (BusRapidTransit is called for short BRT).The fast public traffic system general vehicle commander of bus used reaches 18 meters, and two idle calls are housed respectively to regulate the environment temperature in compartment before and after in compartment, these two air-conditionings use a compressor simultaneously and controlled by an executor.The air-conditioning that the bus that " BRT air-conditioning " of the present invention is fast public traffic system uses.Due to the installation site of two air-conditionings and model difference, add passengers quantity in compartment, front and back not etc. and the difference of compartment insulation itself, before and after occurring sometimes in the running of bus rapid transit, in compartment, temperature difference is larger.Because BRT air-conditioning is not for the control of front and back air conditioner surroundings temperature, it is temperature controlled reference value with the return air temperature of main air-conditioning (front air-conditioning) that the temperature of air-conditioner set controls usual, as long as the return air temperature of main air-conditioning (front air-conditioning) reaches the desired temperature of air conditioner manipulator, compressor of air conditioner just quits work, at this moment the environment temperature of secondary air-conditioning (rear air-conditioning) does not likely also reach the desired temperature (temperature is too high) of air conditioner manipulator, or the environment temperature of secondary air-conditioning (rear air-conditioning) has exceeded the desired temperature (temperature is too low) of air conditioner manipulator.Find in the collection to compartment temperature data before and after BRT air-conditioning in recent years, in the running of quick public transport sometimes before and after temperature in compartment to differ 3 ~ 4 DEG C.This can have a certain impact to the comfortableness that passenger in compartment takes.
Summary of the invention
The object of the invention is to solve the problem, the control method of the temperature difference before and after a kind of BRT air-conditioning is provided, it processes the return air temperature of two air-conditionings before and after BRT air-conditioning and control, guarantee that the return air temperature error of two air-conditionings in front and back is within the scope of 2 DEG C, thus the comfortableness that fast public traffic system bus is taken can be ensured.
For realizing above-mentioned object, present invention employs following technical scheme.
The control method of the temperature difference before and after a kind of BRT air-conditioning, described BRT air-conditioning comprises and is arranged on before and after compartment two groups independently roof-mounted air-condition and magnetic valve, connecting line, compressor, generator, executor and wire harness, it is characterized in that, to the control method of the temperature difference before and after described BRT air-conditioning be:
(1) in former air-condition circuits system, increase the temperature sensor, refrigerant magnetic valve and the control circuit that are arranged on front and back return air inlet, form new air-conditioner control system;
(2) sample by the temperature of described air-conditioner control system to front and back roof-mounted air-condition return air inlet, calculate, compare and adjust and control front and back air conditioner coolant magnetic valve and compressor of air conditioner;
(3) when the information of the temperature value that described air-conditioner control system collects front return air inlet for air-conditioner lower than rear return air inlet for air-conditioner temperature value 2 DEG C, namely air-conditioner control system closes the refrigerant magnetic valve of front roof-mounted air-condition; After closing a way solenoid valve, whole refrigerant just all enters rear roof-mounted air-condition, and the refrigerating speed of rear roof-mounted air-condition is accelerated;
(4) when the sample temperature of front and back roof-mounted air-condition return air inlet is when identical, before under the control of described air-conditioner control system, the refrigerant magnetic valve of roof-mounted air-condition reopens;
(5) when the temperature of front and back roof-mounted air-condition return air inlet reaches the temperature of described air-conditioner control system setting, described compressor of air conditioner cuts out, thus ensures the equilibrium of fast public traffic system bus compartment temperature.
Further, described air-conditioner control system selects same model, temperature sensor with precision, that is: the model being arranged on the temperature sensor of front and back roof-mounted air-condition return air inlet should be consistent with precision, like this, to the calculating of the collection of temperature signal, parameter, to compare and just more accurate to the control of described refrigerant magnetic valve and compressor.
Before and after BRT air-conditioning of the present invention, the good effect of the control method of the temperature difference is:
(1) being arranged on the temperature sensor of front and back return air inlet, magnetic valve and control circuit by increasing in BRT air-conditioning primary circuit system, realizing the control to two groups, front and back independently roof-mounted air-condition.The change of this control method to primary circuit is little, cost is low, practical and easily implement.
(2) by processing the return air temperature of two air-conditionings before and after fast public traffic system (BRT) air-conditioning and control, guarantee that the return air temperature error of two air-conditionings in front and back is within the scope of 2 DEG C, effectively improve the unbalanced problem of temperature in BRT compartment, thus ensure that the comfortableness that fast public traffic system bus is taken.
(3) easily implement, easily the air-conditioning of existing fast public traffic system (BRT) is transformed.
Accompanying drawing explanation
Fig. 1 is the control circuit I of the control method of the temperature difference before and after BRT air-conditioning of the present invention.
Fig. 2 is the control circuit II of the control method of the temperature difference before and after BRT air-conditioning of the present invention.
Fig. 3 is the control circuit III of the control method of the temperature difference before and after BRT air-conditioning of the present invention.
Label in figure is respectively:
DCF1, front overhead type air conditioner coolant magnetic valve;
DCF2, rear roof-mounted air-condition refrigerant magnetic valve;
T1, front overhead type air-conditioning return air temperature sensor;
T2, rear roof-mounted air-condition return air temperature sensor.
Detailed description of the invention
Further illustrate the detailed description of the invention of the control method of the temperature difference before and after BRT air-conditioning of the present invention below in conjunction with accompanying drawing, but it is noted that enforcement of the present invention is not limited to following embodiment.
A control method for the temperature difference before and after BRT air-conditioning, described BRT air-conditioning comprises and is arranged on before and after compartment two groups independently roof-mounted air-condition and magnetic valve, connecting line, compressor, generator, executor and wire harness.To the control method of the temperature difference before and after described BRT air-conditioning be:
(1) in former air-condition circuits system, increase the temperature sensor, refrigerant magnetic valve and the control circuit that are arranged on front and back return air inlet, form new air-conditioner control system.Described air-conditioner control system should select same model, temperature sensor with precision, that is: the model being arranged on the temperature sensor of front and back roof-mounted air-condition return air inlet should be consistent with precision, like this, to the calculating of the collection of temperature signal, parameter, to compare and just more accurate to the control of described refrigerant magnetic valve and compressor.
(2) sample by the temperature of described air-conditioner control system to front and back roof-mounted air-condition return air inlet, calculate, compare and adjust, control front and back air conditioner coolant magnetic valve and compressor of air conditioner with this.
(3) when the information of the temperature value that described air-conditioner control system collects front return air inlet for air-conditioner lower than rear return air inlet for air-conditioner temperature value 2 DEG C, namely air-conditioner control system closes the refrigerant magnetic valve of front roof-mounted air-condition; After closing a way solenoid valve, whole refrigerant just all enters rear roof-mounted air-condition, the refrigerating speed of rear roof-mounted air-condition is accelerated, the temperature of the temperature of rear roof-mounted air-condition return air inlet and front overhead type return air inlet for air-conditioner is reached unanimity rapidly.
(4) when the sample temperature of front and back roof-mounted air-condition return air inlet is when identical, before under the control of described air-conditioner control system, the refrigerant magnetic valve of roof-mounted air-condition reopens;
(5) when the temperature of front and back roof-mounted air-condition return air inlet reaches the temperature of described air-conditioner control system setting, under the control of described air-conditioner control system, described compressor of air conditioner cuts out.The temperature of roof-mounted air-condition before and after BRT is so just made to keep almost consistent, solve air-conditioning before and after in prior art and have the problem of the temperature difference, thus ensure that the equilibrium of fast public traffic system bus compartment temperature, ensure that the comfortableness that fast public traffic system bus is taken.
Before and after BRT air-conditioning of the present invention the temperature difference control method described in air-conditioner control system adopt control circuit be:
See Fig. 1.By T1, R2 forms the reference potential (roof-mounted air-condition return air temperature sensor T1 was reference potential VA in the past) of described air-conditioner control system comparator, by R1, T2 forms the comparison current potential (later roof-mounted air-condition return air temperature sensor T2 is for comparing current potential VB) of described comparator, in the running of front and back roof-mounted air-condition, when the current potential of VB is worth higher than VA current potential 2 DEG C, described comparator exports electronegative potential, triode Q1 is ended, relay J 1 disconnects, turn off DCF2, now illustrate: the temperature of T2 is lower than the temperature of T1 2 DEG C, DCF2 should be closed, refrigerant is made all to flow to front roof-mounted air-condition, it is made to accelerate cooling rate.When the temperature of T1 is identical with the temperature of T2, comparator exports high potential, makes triode Q1 turn-on relay J1 adhesive, opens DCF2, makes rear roof-mounted air-condition continue refrigeration.
See Fig. 2.By T2, R2 ' forms the reference potential (later roof-mounted air-condition return air temperature sensor T2 is reference potential VA ') of described air-conditioner control system comparator, by R1 ', T1 forms the comparison current potential (roof-mounted air-condition return air temperature sensor was for comparing current potential VB ' in the past) of described comparator, in the running of front and back roof-mounted air-condition, when the current potential of VB ' is worth higher than VA ' current potential 2 DEG C, described comparator exports electronegative potential, triode Q1 is ended, relay J 1 ' disconnects, turn off DCF1, now illustrate: the temperature of T1 is lower than the temperature of T2 2 DEG C, DCF1 should be closed, refrigerant is made all to flow to rear roof-mounted air-condition, it is made to accelerate cooling rate.When the temperature of T1 is identical with the temperature of T2, comparator exports high potential, makes triode Q1 turn-on relay J1 adhesive, opens DCF1, makes front roof-mounted air-condition continue refrigeration.
When the current potential of T1, T2 all reaches the current potential of described air-conditioner control system setting; described ac control circuit will export stopping signal to compressor, makes compressor (environment temperature in this explanation compartment has reached the temperature value set by described air-conditioner control system) out of service.As long as when having a road return air temperature sensor (T1 or T2) not reach the current potential of described air-conditioner control system setting, described compressor just runs always, until the current potential of (T1 and T2) return air temperature sensor all reaches the current potential of described air-conditioner control system setting, compressor just can be out of service.
See Fig. 3.After described air-conditioner control system sets temperature value, in fact on circuit, just set the current potential (reference potential of comparator) of variable potentiometer W, the reference potential of two-way comparator is made up of W, R2, R3 and W, R7, R8 respectively, the reference potential of two-way comparator (N3, N4) wants identical, and this just needs resistance R2=R7, the R3=R8 of resistance.
The comparison current potential of two-way comparator (N3, N4) is made up of R1, T2 and R6, T1 respectively.The resistance of resistance answers R1=R6, and only have when the comparative voltage position (the 2# pin of N3, the 2# pin of N4) in comparator is simultaneously higher than reference potential in comparator, triode Q1 end, disconnects J1 relay, thus stopping compressor operating.As long as wherein have the comparison potential value of a road comparator lower than reference potential, so triode Q1 conducting all the time, makes compressor work always.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the inventive method; can also make some improvement and modification, these improve and modify and also should be considered within the scope of protection of the present invention.
Claims (8)
1. the control method of the temperature difference before and after a BRT air-conditioning, described BRT air-conditioning comprises and is arranged on before and after compartment two groups independently roof-mounted air-condition and magnetic valve, connecting line, compressor, generator, executor and wire harness, it is characterized in that, to the control method of the temperature difference before and after described BRT air-conditioning be:
(1) in former air-condition circuits system, increase the temperature sensor, refrigerant magnetic valve and the control circuit that are arranged on front and back return air inlet, form new air-conditioner control system;
(2) sample by the temperature of described air-conditioner control system to front and back roof-mounted air-condition return air inlet, calculate, compare and adjust and control front and back air conditioner coolant magnetic valve and compressor of air conditioner;
(3) when the information of the temperature value that described air-conditioner control system collects front return air inlet for air-conditioner lower than rear return air inlet for air-conditioner temperature value 2 DEG C, namely air-conditioner control system closes the refrigerant magnetic valve of front roof-mounted air-condition; After closing a way solenoid valve, whole refrigerant just all enters rear roof-mounted air-condition, and the refrigerating speed of rear roof-mounted air-condition is accelerated;
(4) when the sample temperature of front and back roof-mounted air-condition return air inlet is when identical, before under the control of described air-conditioner control system, the refrigerant magnetic valve of roof-mounted air-condition reopens;
(5) when the temperature of front and back roof-mounted air-condition return air inlet reaches the temperature of described air-conditioner control system setting, described compressor of air conditioner cuts out, thus ensures the equilibrium of fast public traffic system bus compartment temperature.
2. the control method of the temperature difference before and after BRT air-conditioning according to claim 1, is characterized in that, described air-conditioner control system should select same model, temperature sensor with precision.
3. the control method of the temperature difference before and after BRT air-conditioning according to claim 1, it is characterized in that, a kind of control circuit that described air-conditioner control system adopts is: by front overhead type air-conditioning return air temperature sensor (T1), resistance R2 forms the reference potential of described air-conditioner control system comparator---and former roof-mounted air-condition return air temperature sensor (T1) is reference potential VA, by resistance R1, rear roof-mounted air-condition return air temperature sensor (T2) forms the comparison current potential of described comparator---and later roof-mounted air-condition return air temperature sensor (T2) is for comparing current potential VB, in the running of front and back roof-mounted air-condition, when the current potential comparing current potential VB is higher than reference potential VA current potential 2 DEG C of values, described comparator exports electronegative potential, triode Q1 is ended, relay J 1 disconnects, have no progeny roof-mounted air-condition refrigerant magnetic valve (DCF2) in pass, now, the temperature of rear roof-mounted air-condition return air temperature sensor (T2) is lower 2 DEG C than the temperature of front overhead type air-conditioning return air temperature sensor (T1), rear roof-mounted air-condition refrigerant magnetic valve (DCF2) should be closed, refrigerant is made all to flow to front roof-mounted air-condition, its cooling rate is accelerated, when the temperature difference of current roof-mounted air-condition return air temperature sensor (T1) and rear roof-mounted air-condition return air temperature sensor (T2) is within 2 DEG C, described comparator exports high potential, make triode Q1 turn-on relay J1 adhesive, open rear roof-mounted air-condition refrigerant magnetic valve (DCF2), make rear roof-mounted air-condition continue refrigeration.
4. the control method of the temperature difference before and after BRT air-conditioning according to claim 1, it is characterized in that, a kind of control circuit that described air-conditioner control system adopts is: by rear roof-mounted air-condition return air temperature sensor (T2), resistance R2 ' forms the reference potential of described air-conditioner control system comparator---and later roof-mounted air-condition return air temperature sensor (T2) is reference potential VA ', by resistance R1 ', front overhead type air-conditioning return air temperature sensor (T1) forms the comparison current potential of described comparator---and former roof-mounted air-condition return air sensor is for comparing current potential VB ', in the running of front and back roof-mounted air-condition, when the current potential comparing current potential VB ' is higher than reference potential VA ' current potential 2 DEG C of values, described comparator exports electronegative potential, triode Q1 is ended, relay J 1 ' disconnects, overhead type air conditioner coolant magnetic valve (DCF1) before turning off, now, the temperature of front overhead type air-conditioning return air temperature sensor (T1) is lower 2 DEG C than the temperature of rear roof-mounted air-condition return air temperature sensor (T2), front overhead type air conditioner coolant magnetic valve (DCF1) should be closed, refrigerant is made all to flow to rear roof-mounted air-condition, its cooling rate is accelerated, when the temperature difference of current roof-mounted air-condition return air temperature sensor (T1) and rear roof-mounted air-condition return air temperature sensor (T2) is within 2 DEG C, described comparator exports high potential, make triode Q1 turn-on relay J1 adhesive, open front overhead type air conditioner coolant magnetic valve (DCF1), make front roof-mounted air-condition continue refrigeration.
5. the control method of the temperature difference before and after BRT air-conditioning according to claim 4, it is characterized in that, when the current potential of described control circuit current roof-mounted air-condition return air temperature sensor (T1), rear roof-mounted air-condition return air temperature sensor (T2) all reaches the current potential of described air-conditioner control system setting, described ac control circuit will export stopping signal to described compressor, makes compressor out of service; As long as when front overhead type air-conditioning return air temperature sensor (T1) or rear roof-mounted air-condition return air temperature sensor (T2) have a road not reach the current potential of described air-conditioner control system setting, described compressor just runs always, until the current potential of front overhead type air-conditioning return air temperature sensor (T1) and rear roof-mounted air-condition return air temperature sensor (T2) all reaches the current potential of described air-conditioner control system setting, described compressor just can be out of service.
6. the control method of the temperature difference before and after BRT air-conditioning according to claim 1, it is characterized in that, a kind of control circuit that described air-conditioner control system adopts is: after described air-conditioner control system sets temperature value, in fact on circuit, just set the current potential of variable potentiometer W---the reference potential of comparator, the reference potential of two-way comparator is made up of variable potentiometer W, resistance R2, resistance R3 and variable potentiometer W, resistance R7, resistance R8 respectively, the reference potential of two-way comparator N3, N4 wants identical, just needs the resistance R2=R7 of resistance, R3=R8.
7. the control method of the temperature difference before and after BRT air-conditioning according to claim 6, it is characterized in that, the comparison current potential of described comparator N3, N4 is made up of resistance R1, rear roof-mounted air-condition return air temperature sensor (T2) and resistance R6, front overhead type air-conditioning return air temperature sensor (T1) respectively, the resistance of its resistance answers R1=R6, when the comparative voltage position in comparator---when the 2# pin of the 2# pin of N3, N4 is simultaneously higher than reference potential in described comparator, triode Q1 ends, disconnect relay J 1, thus stop compressor operating.
8. the control method of the temperature difference before and after BRT air-conditioning according to claim 7, it is characterized in that, as long as described comparator N3, N4 wherein have the comparison potential value on a road lower than reference potential, triode Q1 conducting all the time, compressor works always.
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| CN105805884B (en) * | 2015-08-28 | 2019-01-25 | 常州海登赛思涂装设备有限公司 | Air-conditioning temperature/humidity control method and control system in a kind of Painting Shop |
| CN105509389A (en) * | 2016-01-26 | 2016-04-20 | 南京西百客汽车空调有限公司 | Air conditioning system of automobile |
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| US5669226A (en) * | 1995-05-17 | 1997-09-23 | Matsushita Electric Industrial Co., Ltd. | Air conditioning apparatus for a vehicle |
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| CN201314669Y (en) * | 2008-12-08 | 2009-09-23 | 项小东 | Bus A/C controlling device |
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