CN101726071A - On-vehicle air conditioner with humidity adjustment function - Google Patents
On-vehicle air conditioner with humidity adjustment function Download PDFInfo
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- CN101726071A CN101726071A CN 200810121561 CN200810121561A CN101726071A CN 101726071 A CN101726071 A CN 101726071A CN 200810121561 CN200810121561 CN 200810121561 CN 200810121561 A CN200810121561 A CN 200810121561A CN 101726071 A CN101726071 A CN 101726071A
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Abstract
The invention discloses a dehumidifying method for an on-vehicle air conditioner, and the on-vehicle air conditioner manufactured by the method. When the humidity detected by a humidity sensor deviates from a set value, the rotating speed of a compressor is controlled by changing the duty ratio of a PWM signal, a pressure sensor increased at the air inlet end of the compressor of an air-conditioning system consisting of an electric compressor can detect the pressure in a tube, and the pressure sensor outputs the corresponding changed resistance value so as to determine the pressure change of an evaporator, keep the evaporation pressure of the evaporator at an optimal value, adjust the evaporation temperature, and ensure that the humidity of the air in the vehicle tends to be the set value to meet the comfortable requirement of the human body. Therefore, the aim of quick dehumidification can be fulfilled, and the dehumidifying effect is stable. The humidity compensating control provided by the invention can increase the humidity in the vehicle in low amplitude under the condition that the external temperature is higher than the temperature in the vehicle, and also can improve the dryness condition caused by over dehumidification under the condition of unchangeable temperature.
Description
Technical field
The present invention relates to a kind of humidity regulation method and device of on-board air conditioner, be used to control the method that enters the dynamic rotating speed of compressor in the middle of relating in particular to this method, and the device that relates to of this method.
Background technology
Have increasing on-board air conditioner to adopt motor compressor in the prior art, promptly the power of compressor is provided by motor, and irrelevant with engine.The air-conditioning system of vehicle can not rely on the running of engine and work like this, can reduce the load of vehicle greatly, optimizes power configuration.The dutycycle of the pwm signal by changing driver drives, and motor compressor can be realized speed governing, and then can regulate humidity and temperature by the control compressor rotary speed.In the humidity regulation process,, make that there is slow-paced shortcoming in the adjusting control of humidity in the prior art because control method is unreasonable.For example at disclosed Chinese patent on August 11st, 2004, notification number is the energy-conservation dehumanization method that discloses a kind of air-conditioner in the patent of CN1519515A, step is as follows: a uses the compressor operating algorithm according to the psychrometric difference of setting between humidity and indoor humidity, determines the frequency of compressor; And b uses outdoor fan operation algorithm, the rotating speed of adjustment outdoor fan according to the temperature difference between reference temperature and indoor temperature.Step b may further comprise the steps: if b-1 indoor humidity and set psychrometric difference between humidity less than setting 10% of humidity, the rotating speed of then setting indoor fan is weak wind; And if b-2 indoor humidity and set psychrometric difference between humidity and be not less than and set 10% of humidity, the rotating speed of then setting indoor fan is a high wind.Mainly realize control in this control principle by detecting psychrometric difference, the rotating speed of compressor comes to determine thus, because it is more unsteady that psychrometric difference exists, for example the humidity value in the passenger cabin obviously changes before and after the door contact interrupter, this moment, this method was taked to determine that by the humidity difference compressor rotary speed adjusts duty, so just made dehumidifying speed obviously reduce.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of speed that dehumidifies is fast, the dehumanization method of the on-board air conditioner of effect stability.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the step of the dehumanization method of this on-board air conditioner is as follows, at first set the ambient humidity value H and the testing environment humidity Ht that will reach, then Ht during greater than H compressor turn round with dynamic rotating speed R, by detecting evaporating pressure P, the evaporating pressure Ps that makes it and set equates the back compressor again with the constant running of dynamic rotating speed R, and described evaporating pressure P is the pressure of compressor inlet end.
Because evaporating temperature is low more, effect on moisture extraction is good more, but evaporating temperature can not be low excessively, the influence refrigeration otherwise evaporimeter freezes.Evaporating temperature is relevant with evaporating pressure, and evaporating pressure is low more, and evaporating temperature is just low more.When therefore air humidity is bigger than normal in detecting car, for making humidity drop to the suitable degree of human body as early as possible, at this moment can make compressor with the optimum speed high speed rotating by control, make the evaporating pressure of evaporimeter be reduced to setting value rapidly, make compressor keep certain rotating speed then, thereby realize the purpose of dehumidifying fast.The reference quantity that the control evaporating pressure adopts is not the psychrometric difference that adopts in the previous methods, but the pressure on the evaporation pipeline, especially the pressure of compressor inlet end, the great advantage of doing like this can make evaporating temperature reach best dehumidifying temperature and constant rapidly, it can not floated because of temperature difference cause temperature to increase, make the effect on moisture extraction variation.
As of the present invention preferred, at first improve compressor rotary speed, detect evaporating pressure P and then, when evaporating pressure P keeps state that compressor runs up during greater than the evaporating pressure Ps that sets adjusting evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set.In case it is little to detect the humidity ratio setting value, can first constant compression machine running speed, but allow evaporating pressure P reduce earlier, the temperature that finally makes evaporimeter is in the requirement of setting, just begin dehumidifying after reaching the dehumidifying condition an of the best, so just accelerate the response speed of air-conditioning greatly, further shortened the dehumidifying time.
As of the present invention preferred, compressor is with dynamic rotating speed R constant speed running back delay working, and described delay time is T.Delay time can preestablish or according to circumstances judge, has had delay time can fully guarantee the stability that dehumidifies.
For fear of preestablishing the problem consuming time that delay time brings, as of the present invention preferred, described delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during greater than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.This short detection method time spent, and high efficiency can detect the situation of change of ambient humidity Ht with the fastest speed.
Under the situation of extraneous high humidity humidity in car, humidity has increase by a small margin in the car in order to make, and as of the present invention preferred, the dehumanization method of this on-board air conditioner has also comprised humidity compensate control,
The first step, testing environment humidity Ht, as Ht during less than default ambient humidity value H, the compressor ultra low speed operation;
Second step, detect evaporating pressure P, thereby the state of keeping the compressor ultra low speed operation during less than the evaporating pressure Ps that sets as evaporating pressure P is adjusted evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set;
The 3rd step, compressor is with dynamic rotating speed R constant speed running back delay working, described delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during less than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.
There has been this humidity compensate control can also under temperature-resistant situation, improve because the drying regime that excessive dehumidifying causes.
Another technical problem that the present invention will solve provides a kind of can dehumidifying fast and the on-board air conditioner with humidity regulation of humidification of utilizing that this dehumanization method makes.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: this has the on-board air conditioner of humidity regulation, it comprises motor compressor, evaporimeter, compressor drive, air-conditioner controller, described motor compressor is connected with evaporator pipeline, described air-conditioner controller is electrically connected with compressor drive, described compressor drive is electrically connected with motor compressor, also is connected with pressure sensor between described motor compressor and the evaporimeter, and described pressure sensor is connected with compressor drive.
As of the present invention preferred, described motor compressor is provided with brushless electric machine.Owing to adopt the work of brushless motor drive compression machine, even therefore engine misses, air-conditioning also can independent operation, and the running of air-conditioning can not reduce travelling and acceleration of automobile.Can optimize the power configuration of automobile thus, the fuel-economizing performance of automobile is improved.
In motor compressor when work, produce vibration, passes to pressure sensor in order not make vibration, as of the present invention preferred, is connected by flexible pipe between described motor compressor and the pressure sensor.Flexible pipe absorbs the vibration from motor compressor like this, makes the pressure sensor smooth working.
The present invention adopts technique scheme: depart from when setting value when humidity sensor detects humidity, can control the rotating speed of compressor by the dutycycle that changes pwm signal, can be by constitute the pressure sensor that increases on the compressor inlet end of air-conditioning system at motor compressor by the detection of pipe internal pressure, pressure sensor is exported corresponding variation resistance, and then the pressure of judging evaporimeter changes, make the evaporating pressure of evaporimeter maintain optimum value, thereby adjusting evaporating temperature, make the air humidity in the car be tending towards setting value, reach the comfort requirement that satisfies human body.So just can realize the purpose of dehumidifying fast, and effect on moisture extraction is stable.Humidity compensate provided by the invention control promptly outside boundary's humidity can also under temperature-resistant situation, improve because the excessive drying regime that dehumidifies and cause greater than increasing humidity in the car under the situation of humidity in the car by a small margin.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is further described in detail.
Fig. 1 has the control flow chart of the on-board air conditioner of humidity regulation for the present invention;
Fig. 2 has the structural representation of the on-board air conditioner of humidity regulation for the present invention.
The specific embodiment
As shown in Figure 2, this on-board air conditioner with humidity regulation has comprised condenser 1, H type expansion valve 2, evaporimeter 3, pressure sensor 4, motor compressor 5, compressor drive 6, air-conditioner controller 7.Condenser 1 is connected with H type expansion valve 2 pipelines, and evaporimeter 3 also H type expansion valve 2 pipelines connects, H type expansion valve 2 again with pressure sensor 4, pressure sensor 4 is electrically connected with motor compressor 5, motor compressor 5 is connected with condenser 1 pipeline; Pressure sensor 4, motor compressor 5 and air-conditioner controller 7 all are electrically connected with compressor drive 6.Pressure sensor 4 is connected the air inlet end of motor compressor 5, and pressure sensor 4 can detect the pressure of compressor inlet end like this.Motor compressor 5 is provided with brushless electric machine, it with pressure sensor 4 between be connected by flexible pipe.On air-conditioner controller 7, be provided with humidity sensor and temperature sensor.Can detect ambient humidity value Ht by humidity sensor, and pressure sensor 4 can detect the evaporating pressure P of motor compressor 5 air inlet ends.
This on-board air conditioner has dehumidification function, when ambient humidity can start dehumidification function during greater than the humidity value set, as shown in Figure 1, after entering dehumidifying program, air-conditioning can compare ambient humidity value Ht and the ambient humidity value H that setting will reach, can improve motor compressor 5 rotating speeds at ambient humidity value Ht during greater than ambient humidity value H, detect evaporating pressure P then, when evaporating pressure P keeps state that compressor runs up during greater than the evaporating pressure Ps that sets adjusting evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set.Compressor is with dynamic rotating speed R constant speed running back delay working, delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during greater than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.
The dehumanization method of this on-board air conditioner has also comprised humidity compensate control, testing environment humidity Ht at first, and as Ht during less than default ambient humidity value H, the compressor ultra low speed operation; Detect evaporating pressure P then, thereby the state of keeping the compressor ultra low speed operation during less than the evaporating pressure Ps that sets as evaporating pressure P is adjusted evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set; Then, compressor is with dynamic rotating speed R constant speed running back delay working, described delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during less than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.
Claims (8)
1. the dehumanization method of an on-board air conditioner, at first set the ambient humidity value H and the testing environment humidity Ht that will reach, then Ht during greater than H compressor turn round with dynamic rotating speed R, it is characterized in that: by detecting evaporating pressure P, the evaporating pressure Ps that makes it and set equates the back compressor again with the constant running of dynamic rotating speed R, and described evaporating pressure P is the pressure of compressor inlet end.
2. according to the dehumanization method of the described on-board air conditioner of claim 1, it is characterized in that: at first improve compressor rotary speed, detect evaporating pressure P and then, when evaporating pressure P keeps state that compressor runs up during greater than the evaporating pressure Ps that sets adjusting evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set.
3. according to the dehumanization method of claim 1 or 2 described on-board air conditioners, it is characterized in that: compressor is with dynamic rotating speed R constant speed running back delay working, and described delay time is T.
4. according to the dehumanization method of the described on-board air conditioner of claim 3, it is characterized in that: described delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during greater than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.
5. according to the dehumanization method of claim 1 or 4 described on-board air conditioners, it is characterized in that: the dehumanization method of this on-board air conditioner has also comprised humidity compensate control,
The first step, testing environment humidity Ht, as Ht during less than default ambient humidity value H, the compressor ultra low speed operation;
Second step, detect evaporating pressure P, thereby the state of keeping the compressor ultra low speed operation during less than the evaporating pressure Ps that sets as evaporating pressure P is adjusted evaporating pressure P, compressor turns round with dynamic rotating speed R constant speed when evaporating pressure Ps that evaporating pressure P equals to set;
The 3rd step, compressor is with dynamic rotating speed R constant speed running back delay working, described delay time T is by the ambient humidity Ht decision of real-time detection gained, when ambient humidity Ht during less than default ambient humidity value H compressor keep state with dynamic rotating speed R constant speed running, compressor withdraws from the state with dynamic rotating speed R constant speed running when ambient humidity Ht equals default ambient humidity value H.
6. on-board air conditioner with humidity regulation, it comprises motor compressor (5), evaporimeter (3), compressor drive (6), air-conditioner controller (7), described motor compressor (5) is connected with evaporimeter (3) pipeline, described air-conditioner controller (7) is electrically connected with compressor drive (6), described compressor drive (6) is electrically connected with motor compressor (5), it is characterized in that: also be connected with pressure sensor (4) between described motor compressor (5) and the evaporimeter (3), described pressure sensor (4) is electrically connected with compressor drive (6).
7. according to the described on-board air conditioner with humidity regulation of claim 6, it is characterized in that: described motor compressor (5) is provided with brushless electric machine.
8. according to claim 6 or 7 described on-board air conditioners, it is characterized in that: be connected by flexible pipe between described motor compressor (5) and the pressure sensor (4) with humidity regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810121561 CN101726071A (en) | 2008-10-20 | 2008-10-20 | On-vehicle air conditioner with humidity adjustment function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810121561 CN101726071A (en) | 2008-10-20 | 2008-10-20 | On-vehicle air conditioner with humidity adjustment function |
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| CN101726071A true CN101726071A (en) | 2010-06-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032933A (en) * | 2011-09-30 | 2013-04-10 | 珠海格力电器股份有限公司 | Relative humidity control method and relative humidity controller for inverter air conditioners |
| CN103743072A (en) * | 2013-12-19 | 2014-04-23 | 柳州正菱集团有限公司 | Air conditioner air inlet device of long-head automobile |
| CN104214895B (en) * | 2014-08-22 | 2017-01-11 | 珠海格力电器股份有限公司 | Method and system for controlling constant-temperature dehumidification of air conditioner |
| CN112361685A (en) * | 2020-12-14 | 2021-02-12 | 珠海格力电器股份有限公司 | Two-stage compressor control method, two-stage compressor refrigeration system and refrigeration equipment |
| CN113701873A (en) * | 2020-05-19 | 2021-11-26 | 广州汽车集团股份有限公司 | Refrigerant flow sound detection device, system and method |
| WO2023070606A1 (en) * | 2021-10-29 | 2023-05-04 | 浙江吉利控股集团有限公司 | Dehumidification mode control method and apparatus, device, medium, and program product |
-
2008
- 2008-10-20 CN CN 200810121561 patent/CN101726071A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032933A (en) * | 2011-09-30 | 2013-04-10 | 珠海格力电器股份有限公司 | Relative humidity control method and relative humidity controller for inverter air conditioners |
| CN103743072A (en) * | 2013-12-19 | 2014-04-23 | 柳州正菱集团有限公司 | Air conditioner air inlet device of long-head automobile |
| CN104214895B (en) * | 2014-08-22 | 2017-01-11 | 珠海格力电器股份有限公司 | Method and system for controlling constant-temperature dehumidification of air conditioner |
| CN113701873A (en) * | 2020-05-19 | 2021-11-26 | 广州汽车集团股份有限公司 | Refrigerant flow sound detection device, system and method |
| CN112361685A (en) * | 2020-12-14 | 2021-02-12 | 珠海格力电器股份有限公司 | Two-stage compressor control method, two-stage compressor refrigeration system and refrigeration equipment |
| WO2023070606A1 (en) * | 2021-10-29 | 2023-05-04 | 浙江吉利控股集团有限公司 | Dehumidification mode control method and apparatus, device, medium, and program product |
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Application publication date: 20100609 |