CN104943704A - Method for rail vehicle air conditioner to achieve humidity control through refrigeration function - Google Patents
Method for rail vehicle air conditioner to achieve humidity control through refrigeration function Download PDFInfo
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- CN104943704A CN104943704A CN201510321913.8A CN201510321913A CN104943704A CN 104943704 A CN104943704 A CN 104943704A CN 201510321913 A CN201510321913 A CN 201510321913A CN 104943704 A CN104943704 A CN 104943704A
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- humidity
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- air conditioner
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to a method for a rail vehicle air conditioner to achieve humidity control through a refrigeration function and relates to a method for controlling a rail vehicle air conditioner device, in particular to a control method for performing dehumidification in a vehicle through refrigeration. A rail vehicle air conditioner control system obtains the temperature and humidity in a carriage and switches a refrigeration mode and a ventilation mode through set temperature indexes. The method is characterized in that the air conditioner control system stores a set temperature index and a set humidity index, and makes a comprehensive judgment according to the temperature and humidity in the carriage obtained in real time. When the air conditioner runs, the method comprises the following steps: (A) when the air conditioner is started for the first time and runs, if the humidity in the carriage is larger than the humidity index and the temperature in the carriage is lower than the temperature index, reducing the temperature index by N DEG C; (B) when the air conditioner needs to be switched from the refrigeration mode to the ventilation mode according to temperature control, making a comprehensive judgment, and if the comprehensive judgment is tenable, reducing the temperature index in the carriage by N DEG C; and (C) when the humidity in the carriage is smaller than the humidity index, restoring the temperature index to a stored value. The process of the comprehensive judgment is that the comprehensive judgment is tenable if the humidity in the carriage is larger than the humidity index and the temperature index is not reduced.
Description
Technical field
The present invention relates to the control method of rail traffic vehicles conditioning unit, particularly relate to a kind of control method of being carried out dehumidifying in car by refrigeration.
Background technology
Current track vehicular traffic a/c system; especially for the vehicle air conditioning with dehumidification requirements; when car humidity is higher than humidity set point; air-conditioning is opened complete cold pattern and is dehumidified; only have when vehicle interior temperature reaches the temperature limiting of setting that (this temperature limiting arranges in order to compressor low-temperature protection; lower than car internal object temperature), or car humidity lower than humidity set point time, air-conditioning transfers normal temperature master mode to.When adopting the method to dehumidify, if thermal load is little in car, and humidity continues higher than setting value, and air-conditioner continuous operates in complete cold pattern, vehicle interior temperature can be caused to reduce rapidly, depart from target temperature.
For rail traffic vehicles a/c system, there is following characteristics: vehicle is in operational process, and the environmental change outside car is comparatively large, may be in platform, in tunnel, also may be overhead.In addition according to the difference of passenger flow volume, in car, thermal load difference is very large; Compressor is provided with minimum time of run, to ensure compressor oil return.
Chinese patent (CN 101878398 B) discloses a kind of air conditioning apparatus, according to the temperature of indoor heat converter and the humidity estimated and target humidity value compare, realize the air conditioner surroundings that humidity is comfortable, but this invention is main it is considered that room conditioning, does not consider the characteristic of this high-speed cruising enclosure space of rail transit cars.
Summary of the invention
Target of the present invention is to provide one and can controls car humidity, vehicle interior temperature can be made again to remain near a rational target temperature, protect the method for air-conditioning compressor simultaneously.
For achieving the above object, the technical solution used in the present invention is: a kind of railway vehicle air conditioner realizes the method for humid control by refrigerating function, temperature and humidity in the control system Real-time Obtaining compartment of railway vehicle air conditioner, according to temperature index conversion refrigeration mode and the air vent mode of setting, key is, the control system of air-conditioning stores temperature index and the humidity index of setting, generates comprehensive descision, comprise the following steps during operation according to the temperature and humidity in the compartment of Real-time Obtaining:
A, air-conditioning open machine when running first, if compartment humidity be greater than humidity index and temperature in compartment lower than temperature index, temperature index is reduced N DEG C;
B, when air-conditioning controls according to temperature, when needing to transfer air vent mode to by refrigeration mode, if comprehensive descision set up, then by vehicle interior temperature index reduce N DEG C;
C, when compartment humidity is less than or equal to humidity index, temperature index is reverted to the value of storage;
The process of comprehensive descision comprises:
If compartment humidity is greater than humidity index, and temperature index does not reduce, comprehensive descision is set up.
Further, N=1.
When air-conditioning initial start, if temperature is lower than temperature index in compartment, air-conditioning will operate in air vent mode under normal circumstances, if now compartment humidity is greater than humidity index, then reduce temperature index, vehicle interior temperature value and new temperature index compare by air-conditioning, if vehicle interior temperature is higher than new temperature index, automatically can proceed to refrigeration mode, dehumidify.When vehicle interior temperature is lower than new temperature index, air-conditioning can transfer ventilation to automatically, and now, in car, actual temperature is only lower than normal temperature index in former car 1 DEG C, and vehicle interior temperature can not be caused too low.
In the operational process of air-conditioning, if operation of air conditioner is when arbitrary normal refrigerating mode, itself have dehumidification function owing to freezing, even if now have dehumidification in car, air-conditioning also keeps present mode to run, without the need to considering humid control.
When air-conditioning controls according to normal temperature, when needing to transfer air vent mode to by refrigeration mode, car humidity value and humidity index are compared, if car humidity is greater than humidity index (when namely having dehumidification), then temperature index is reduced by 1 DEG C.Now air-conditioning can continue to drop into refrigeration mode, to dehumidify.But when vehicle interior temperature is again lower than new temperature index, air-conditioning can transfer air vent mode to automatically, now, in car, actual temperature is only lower than normal temperature index in former car 1 DEG C, and vehicle interior temperature can not be caused too low.
Adopt the present invention, first improve when air-conditioning initial start, air-conditioning first automatic mode of operation entered according to the current need of temperature and humidity condition judgment when starting in the technical program, i.e. refrigeration mode or air vent mode, vehicle thermal load hour can be prevented, namely starting of air conditioner enters refrigeration mode, and compressor operating limits by the shortest time of run again, and causes guest room actual temperature to depart from the problem of target temperature; In addition, air-conditioning will by refrigeration turn ventilate time, judge damp condition, as needed dehumidifying, then directly keep refrigeration mode to run, can effectively prevent high frequent start and stop, prolongation compressor service life.
Accompanying drawing explanation
Fig. 1 is control process block diagram of the present invention.
Detailed description of the invention
A kind of railway vehicle air conditioner realizes the method for humid control by refrigerating function, temperature and humidity in the control system Real-time Obtaining compartment of railway vehicle air conditioner, according to temperature index conversion refrigeration mode and the air vent mode of setting, the control system of air-conditioning stores temperature index and the humidity index of setting, generate comprehensive descision according to the temperature and humidity in the compartment of Real-time Obtaining, comprise the following steps during operation:
A, air-conditioning open machine when running first, if compartment humidity be greater than humidity index and temperature in compartment lower than temperature index, temperature index is reduced N DEG C;
B, when air-conditioning controls according to temperature, when needing to transfer air vent mode to by refrigeration mode, if comprehensive descision set up, then by vehicle interior temperature index reduce N DEG C;
C, when compartment humidity is less than or equal to humidity index, temperature index is reverted to the value of storage;
The process of comprehensive descision comprises: if compartment humidity is greater than humidity index, and temperature index does not reduce, and comprehensive descision is set up.
In order to the variation range of control temperature, new temperature index is lower 1 DEG C than the temperature index of setting, both N=1.
Consider the sensitivity of some region to humidity, can strengthen dehumidification function further: if temperature index reduces, and compartment humidity exceeds humidity index 20%, comprehensive descision is set up.If compartment humidity is 70%, humidity index is 40%, then once reducing on the temperature index basis reduced again, and dehumidifying further.
For example, the temperature index as setting is 25 DEG C, when temperature in compartment is down to 25 DEG C, air-conditioning will enter air vent mode, but compartment humidity is now greater than humidity index, at this moment temperature index is adjusted to 24 DEG C, air-conditioning continues to operate in refrigeration mode, continues dehumidifying; When temperature in compartment is down to 24 DEG C, air-conditioning will enter air vent mode, but compartment humidity is now greater than 20% of humidity index, and at this moment temperature index is adjusted to 23 DEG C, air-conditioning continues to operate in refrigeration mode, continue dehumidifying.Here 20%, just for a value of specific region, can be set to other numerical value according to the actual requirements.
Consider that temperature index declines and can cause the discomfort of people too much, in the scenario above, when again turning down temperature index, N/2 DEG C can be reduced, in upper example, when temperature in compartment is down to 24 DEG C, air-conditioning will enter air vent mode, but compartment humidity is now greater than 20% of humidity index, at this moment temperature index is adjusted to 23.5 DEG C.
When train is in operation and centre is stopped, external environment condition has very big-difference.Train dwelling and when opening car door, is communicated with outside in compartment, and internal and external temperature and humidity difference all very greatly, if now controlled routinely, may cause air-conditioner set frequent transitions function.
In order to adapt to this situation, the control system connecting column vehicle control of air-conditioning, obtain the open and-shut mode of car door, the process of comprehensive descision also comprises: if car door is in opening, and comprehensive descision is set up.
Consider following situations: the humidity of vehicle exterior is less than the humidity of interior, the effect of dehumidifying now also can be reached by changing wind, therefore, in the present invention, the control system connecting column vehicle control of air-conditioning, the humidity of Real-time Obtaining vehicle exterior, the process of comprehensive descision also comprises: if the humidity of vehicle exterior is less than the humidity of interior, comprehensive descision is false.
When air conditioner needs to transfer air vent mode to by refrigeration mode, if the requirement of interior humidity out of reach, but the humidity of external environment condition is less than the humidity in compartment, then by ventilating instead of freezing to reach dehumidifying object.
Below in conjunction with accompanying drawing, the present invention will be further described.
Referring to Fig. 1, when air-conditioning initial start, if refrigeration mode will be entered, without the need to judging, directly enter refrigeration mode;
If will enter air vent mode, and compartment humidity is not more than humidity index, directly enters air vent mode, otherwise:
Judge whether to reduce temperature index, if do not reduced:
Judge outside compartment, whether humidity is greater than compartment humidity, if high humidity outside compartment, temperature index subtracts 1, air-conditioning enters relevant work pattern according to temperature in current compartment and new temperature index, both enters refrigeration mode, otherwise, enter air vent mode;
If reduce temperature index, judge whether compartment humidity exceeds humidity index 20%, if set up, judge outside compartment, whether humidity is greater than compartment humidity, if high humidity outside compartment, temperature index subtracts 1, air-conditioning enters relevant work pattern according to temperature in current compartment and new temperature index, both refrigeration mode was entered, otherwise, enter air vent mode;
If compartment humidity does not exceed humidity index 20%, judge whether car door is opened, if opened, temperature index subtracts 1, and air-conditioning enters relevant work pattern according to temperature in current compartment and new temperature index, both enters refrigeration mode, otherwise, enter air vent mode;
Judge whether to reach dehumidification requirements, both whether compartment humidity was less than humidity index, if reach requirement, recovered target temperature.
Claims (6)
1. a railway vehicle air conditioner realizes the method for humid control by refrigerating function, temperature and humidity in the control system Real-time Obtaining compartment of railway vehicle air conditioner, according to temperature index conversion refrigeration mode and the air vent mode of setting, it is characterized in that, the control system of air-conditioning stores temperature index and the humidity index of setting, generate comprehensive descision according to the temperature and humidity in the compartment of Real-time Obtaining, comprise the following steps during operation:
A, air-conditioning open machine when running first, if compartment humidity be greater than humidity index and temperature in compartment lower than temperature index, temperature index is reduced N DEG C;
B, when air-conditioning controls according to temperature, when needing to transfer air vent mode to by refrigeration mode, carry out comprehensive descision, if comprehensive descision is set up, then vehicle interior temperature index is reduced N DEG C;
C, when compartment humidity is less than or equal to humidity index, temperature index is reverted to the value of storage;
The process of comprehensive descision comprises:
If compartment humidity is greater than humidity index, and temperature index does not reduce, comprehensive descision is set up.
2. a kind of railway vehicle air conditioner according to claim 1 realizes the method for humid control by refrigerating function, it is characterized in that: the process of comprehensive descision also comprises:
If temperature index reduces, and compartment humidity exceeds humidity index 20%, and comprehensive descision is set up.
3. a kind of railway vehicle air conditioner according to claim 1 realizes the method for humid control by refrigerating function, it is characterized in that: the control system connecting column vehicle control of air-conditioning, obtain the open and-shut mode of car door, the process of comprehensive descision also comprises: if car door is in opening, and comprehensive descision is set up.
4. a kind of railway vehicle air conditioner according to claim 1 realizes the method for humid control by refrigerating function, it is characterized in that: the control system connecting column vehicle control of air-conditioning, the humidity of Real-time Obtaining vehicle exterior, the process of comprehensive descision also comprises: if the humidity of vehicle exterior is less than the humidity of interior, comprehensive descision is false.
5. a kind of railway vehicle air conditioner according to claim 1 realizes the method for humid control by refrigerating function, it is characterized in that: the value of N is 1.
6. a kind of railway vehicle air conditioner according to claim 1 realizes the method for humid control by refrigerating function, it is characterized in that: the process of comprehensive descision also comprises:
If temperature index reduces, and compartment humidity exceeds humidity index 20%, and comprehensive descision is set up;
In step B, vehicle interior temperature index reduces N/2 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510321913.8A CN104943704B (en) | 2015-06-12 | 2015-06-12 | A kind of method that railway vehicle air conditioner realizes humid control by refrigerating function |
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| CN201510321913.8A CN104943704B (en) | 2015-06-12 | 2015-06-12 | A kind of method that railway vehicle air conditioner realizes humid control by refrigerating function |
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| CN104943704A true CN104943704A (en) | 2015-09-30 |
| CN104943704B CN104943704B (en) | 2017-08-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263671A (en) * | 2018-09-17 | 2019-01-25 | 山东朗进科技股份有限公司 | A kind of dehumidification control method of vehicle convertible frequency air-conditioner |
| CN109263673A (en) * | 2018-10-16 | 2019-01-25 | 石家庄国祥运输设备有限公司 | The autocontrol method of railway vehicle air conditioner system |
| CN111765610A (en) * | 2020-07-09 | 2020-10-13 | 苏州智数家建筑科技有限公司 | Indoor humidity control method |
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| CN101171457A (en) * | 2005-05-24 | 2008-04-30 | 大金工业株式会社 | Air conditioning system |
| CN101878398A (en) * | 2007-11-28 | 2010-11-03 | 大金工业株式会社 | Air conditioning apparatus |
| CN102072548A (en) * | 2010-12-30 | 2011-05-25 | 海信（山东）空调有限公司 | Air conditioning time sharing temperature-humidity independent control method and device and air conditioner |
| CN102470881A (en) * | 2009-07-22 | 2012-05-23 | 三菱电机株式会社 | Vehicle air-conditioning control method |
| JP2014218210A (en) * | 2013-05-10 | 2014-11-20 | 三菱電機株式会社 | Air conditioning system |
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2015
- 2015-06-12 CN CN201510321913.8A patent/CN104943704B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171457A (en) * | 2005-05-24 | 2008-04-30 | 大金工业株式会社 | Air conditioning system |
| CN101878398A (en) * | 2007-11-28 | 2010-11-03 | 大金工业株式会社 | Air conditioning apparatus |
| CN102470881A (en) * | 2009-07-22 | 2012-05-23 | 三菱电机株式会社 | Vehicle air-conditioning control method |
| CN102072548A (en) * | 2010-12-30 | 2011-05-25 | 海信（山东）空调有限公司 | Air conditioning time sharing temperature-humidity independent control method and device and air conditioner |
| JP2014218210A (en) * | 2013-05-10 | 2014-11-20 | 三菱電機株式会社 | Air conditioning system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263671A (en) * | 2018-09-17 | 2019-01-25 | 山东朗进科技股份有限公司 | A kind of dehumidification control method of vehicle convertible frequency air-conditioner |
| CN109263673A (en) * | 2018-10-16 | 2019-01-25 | 石家庄国祥运输设备有限公司 | The autocontrol method of railway vehicle air conditioner system |
| CN111765610A (en) * | 2020-07-09 | 2020-10-13 | 苏州智数家建筑科技有限公司 | Indoor humidity control method |
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| CN104943704B (en) | 2017-08-01 |
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