CN107314475A - A kind of workshop post air-conditioning system and its control method - Google Patents
A kind of workshop post air-conditioning system and its control method Download PDFInfo
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- CN107314475A CN107314475A CN201710578964.8A CN201710578964A CN107314475A CN 107314475 A CN107314475 A CN 107314475A CN 201710578964 A CN201710578964 A CN 201710578964A CN 107314475 A CN107314475 A CN 107314475A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000005057 refrigeration Methods 0.000 claims abstract description 35
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000008676 import Effects 0.000 claims abstract description 12
- 238000007710 freezing Methods 0.000 claims abstract description 8
- 230000008014 freezing Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 2
- 230000005494 condensation Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of workshop post air-conditioning system, including evaporating type condensing refrigeration unit, refrigerating water pump and many typhoon cold heat exchangers for being separately positioned on each work position in workshop, the freeze cycle set up by refrigerating water pump is provided between each air cooling heat exchanger and evaporating type condensing refrigeration unit, the air-conditioning system also includes the multiple Temperature Humidity Sensors for being separately positioned on each work position in workshop, it is separately positioned on the temperature sensor at the chilled water import of evaporating type condensing refrigeration unit and exit, adjust the motorized adjustment water valve of each air cooling heat exchanger chilled-water flow, the refrigerating water pump frequency converter and central controller of control freezing revolution speed.Its control method is the air quantity gear according to air dew point temperature and air cooling heat exchanger, adjust the aperture of motorized adjustment water valve, the leaving air temp of air cooling heat exchanger is higher than air dew point temperature, can both improve the work comfort degree of workman, be also prevented from table surface condensation.
Description
Technical field
The present invention relates to air-conditioning technical field, and in particular to a kind of workshop post air-conditioning system and its control method.
Background technology
At present, most of factory floors all do not install air-conditioning, only install fan, because high temperature season outdoor temperature is too high,
Temperature is also high in workshop, can not discharge the heat and humid air in workshop in time using fan, frequently results in high temperature in workshop difficult
It is resistance to.Only a few workshop is mounted with water pouring/water curtain style evaporation equipment, although advantage of lower cost, can play certain cooling effect,
But it is excessive to be easily caused air humidity in workshop, comfortableness DeGrain, and product may be produced because workshop humidity is excessive
Adverse effect.
Although conventional air-conditioning system refrigeration and effect on moisture extraction are good, because initial cost is high, operating cost is high so that absolutely mostly
Number factory and enterprise can not be born, therefore, less applied to factory floor.
Into high temperature season, most of factory floors are because without cooling measure, causing temperature in workshop too high；If things go on like this,
Workman's work efficiency drop is easily caused, and adverse effect is brought to workman's physical and mental health.With Chinese birth level it is continuous under
Drop, ageing phenomenon is increasingly severe, and the quantity of labour force is gradually less, the continuous rise of labour cost, therefore, people-oriented,
Improve a home from home of factory floor, it is imperative.
Due to factory floor, often seal is bad, local can even open wide sometimes, it is impossible to meet air conditioning area requirement close
The condition closed；And most of factory buildings are all provided with substantial amounts of production equipment, substantial amounts of plant area, the workman one of factory are occupied
As only worked on fixed post, scope of activities very little.According to conventional design of air conditioning thinking, to whole workshop all
Air-conditioning system is set, will be unable to reach preferable air-conditioning effect purpose, and cost of investment and the operation of air-conditioning system certainly will be caused
The huge waste of expense.
The content of the invention
An object of the present invention is to provide a kind of workshop post air-conditioning system, and the work position just for workman is carried
For spot cooling, to improve the temperature environment of workshop local space, the work comfort degree of workman can be not only improved, and can also
Reduce air-conditioning system cost of investment and operating cost.
To achieve the above object, the technical scheme is that：
A kind of workshop post air-conditioning system, including evaporating type condensing refrigeration unit, refrigerating water pump and it is separately positioned on workshop
It is provided between many typhoon cold heat exchangers in each work position, each air cooling heat exchanger and evaporating type condensing refrigeration unit and passes through refrigerating water pump
The freeze cycle of foundation, the air-conditioning system also includes being separately positioned on multiple Temperature Humidity Sensors in each work position in workshop, divided
The temperature sensor at the chilled water import of evaporating type condensing refrigeration unit and exit is not arranged on, adjust each air cooling heat exchanger
Motorized adjustment water valve, the refrigerating water pump frequency converter and central controller of control freezing revolution speed, described each temperature of chilled-water flow
Humidity sensor is used for the humiture state for detecting each work position, and output temperature-humidity signal corresponding with humiture state,
The temperature sensor is used to detect chilled water import temperature and outlet temperature, and exports corresponding chilled water out temperature letter
Number, the central controller is used to receive each temperature-humidity signal and chilled water out temperature signal, by adjusting each electric adjustable
The aperture of thrift lock and is passed through with controlling the leaving air temp of each air cooling heat exchanger to be higher than the air dew point temperature in each work position
Control the rotating speed of refrigerating water pump frequency converter regulation refrigerating water pump poor to stablize chilled water out temperature.
By being located at the Temperature Humidity Sensor in each work position in workshop, the humiture shape for indicating each work position can be obtained
The temperature and humidity signal of state, central controller receives above-mentioned signal, obtains the humiture state in current each work position and counts
The air dew point temperature in each work position is calculated, with reference to the air quantity gear of each air cooling heat exchanger, regulation and each air cooling heat exchanger pair
The aperture for each motorized adjustment water valve answered, controls chilled-water flow, it is ensured that the wind pushing temperature of each air cooling heat exchanger reveals higher than air
Point temperature, so as to ensure that air cooling heat exchanger air outlet and the equipment surface in work position region do not condense.Due to temperature and humidity sensing
Device can be easily achieved air-conditioning system fortune with the aerial temperature and humidity parameter in continual acquisition work position with reference to central controller
Capable Automated condtrol, can significantly reduce the energy consumption of air-conditioning system, improve the efficiency of overall operation.
In addition, the place capacity type selecting of air-conditioning system is to be based on maintaining workman certain in the scope of activities of shopwork post
The principle of comfort level is come what is determined, and than the conventional comprehensive air-conditioning system in workshop, the equipment of the air-conditioning system of this fixed-point type is held
Amount greatly reduces, and cost of investment also greatly reduces.
Further, the evaporating type condensing refrigeration unit is high temperature modification evaporating type condensing refrigeration unit.Changed due to air-cooled
The wind pushing temperature of hot device is higher than the air dew point temperature in work position, therefore, what corresponding evaporating type condensing refrigeration unit was provided
Chilled water temperature is also high, selects high temperature modification evaporating type condensing refrigeration unit, can improve the efficiency of refrigeration unit, saves refrigeration unit
Operating cost.
Further, the freeze cycle is big temperature difference freeze cycle.Using big difference in temperature control technique, freezing can be reduced
Pump discharge, reduces conveyance conduit size, reduces cost, by being arranged at evaporating type condensing refrigeration unit chilled water import and going out
Temperature sensor at mouthful, detects the inlet temperature and outlet temperature of chilled water respectively, cold to control according to the big temperature difference of setting
Freeze the rotating speed that pump frequency conversion device adjusts refrigerating water pump, it is to avoid long-time constant rotational speed is operated, further reduce energy consumption, improve efficiency.
Further, the central controller also has remote communication interface, can be remotely connected with automatic building control system, real
Existing remote monitoring.
Another object of the present invention is to provide a kind of control method of workshop post air-conditioning system, it includes following step
Suddenly：
A, the humiture state for detecting each work position in workshop, calculate the air dew point temperature in each work position, detect
The temperature of chilled water import and export, calculates chilled water out temperature poor；
B, the air quantity gear according to air dew point temperature and air cooling heat exchanger, adjust the aperture of motorized adjustment water valve, make wind
The leaving air temp of cold heat exchanger is higher than air dew point temperature；
C, the rotating speed of control refrigerating water pump poor according to chilled water out temperature；
D, according to the temperature and the rotating speed of refrigerating water pump at chilled water import, control evaporating type condensing refrigeration unit loading or
Off-load, to remain temperature-resistant at chilled water outlet.
Compared with prior art, its advantage is the present invention：
Because each work position only to workshop provides spot cooling, and by leaving air temp control in air dew point temperature
More than, the place capacity of air-conditioning system is small, and cost of investment is low, and technology is supplied back with reference to big difference in temperature control technique and chilled water high temperature,
The operating cost of air-conditioning system is significantly decreased, while according to the different temperature and humidity situation in each work position in workshop, automatically
Each air cooling heat exchanger running status is adjusted, the work comfort degree of workman can be both improved, table surface condensation is also prevented from.
Brief description of the drawings
Fig. 1 is the structural representation of the workshop post air-conditioning system of the present invention；
Description of reference numerals：1- evaporating type condensing refrigeration units；2- chilled water pumps；3- air cooling heat exchangers；4- motorized adjustments
Water valve, 5- Temperature Humidity Sensors；6- refrigerating water pump frequency converters；7- central controllers；8- temperature sensors；9- temperature sensors；10-
Workbench；11- work positions；12- factory floors；13- remote communication interfaces.
Embodiment
Present disclosure is described in further details with reference to the accompanying drawings and detailed description.
Embodiment：
As shown in figure 1, being the work position of workman between some workbench 10 of setting, workbench 10 in factory floor 12
11, the workshop post air-conditioning system, including the air cooling heat exchanger 3 of each top of work position 11 is arranged on, and it is located at outdoor
Evaporating type condensing refrigeration unit 1 and refrigerating water pump 2, be provided between air cooling heat exchanger 3 and evaporating type condensing refrigeration unit 1 by cold
Freeze the freeze cycle that pump 2 is set up, described air-conditioning system also includes being arranged on the Temperature Humidity Sensor near each work position 11
5, the temperature sensor 8 and 9 at the chilled water import of evaporating type condensing refrigeration unit 1 and exit is separately positioned on, is adjusted air-cooled
The motorized adjustment water valve 4 of the chilled-water flow of heat exchanger 3, controls the refrigerating water pump frequency converter 6 of the rotating speed of refrigerating water pump 2, with telecommunication
The central controller 7 of interface 13, can remotely be connected with automatic building control system, realize remote monitoring.
Temperature Humidity Sensor 5 is used for the humiture state for detecting each work position 11, and exports corresponding with humiture state
Temperature-humidity signal to central controller 7, the central controller 7 is received after each temperature-humidity signal, calculates each work position
11 air dew point temperature, by adjusting the aperture of each motorized adjustment water valve 4 to control the leaving air temp of each air cooling heat exchanger 3 high
Air dew point temperature in each work position.Because Temperature Humidity Sensor 5 can be with the air in continual acquisition work position 11
Humiture parameter, the Automated condtrol of air-conditioning system operation is easily achieved with reference to central controller 7, air-conditioning can be significantly reduced
The energy consumption of system, improves the efficiency of overall operation.
The workshop post air-conditioning system of the present invention, its place capacity type selecting is in shopwork post based on maintenance workman
The principle of certain comfort level is determined in scope of activities, than the conventional comprehensive air-conditioning system in workshop, the sky of this fixed-point type
The place capacity of adjusting system greatly reduces, and cost of investment also greatly reduces.The wind pushing temperature of air cooling heat exchanger 3 is set above
The air dew point temperature in work position 11, therefore, the chilled water temperature that corresponding evaporating type condensing refrigeration unit 1 is provided are also high,
High temperature modification evaporating type condensing refrigeration unit is selected, the efficiency of refrigeration unit can be improved, refrigeration unit operating cost is saved.
Temperature sensor 8 and 9 is used to detect chilled water import temperature and outlet temperature, and exports corresponding freezing water entrance
Temperature signal is to central controller 7, and central controller 7 is received after chilled water out temperature signal, is calculated chilled water and is entered
Outlet temperature is poor, by controlling the rotating speed of the regulation refrigerating water pump 2 of refrigerating water pump frequency converter 6 poor to stablize chilled water out temperature.It is cold
Freeze circulation and use big difference in temperature control technique, can reduce the flow of refrigerating water pump 2, reduce conveyance conduit size, reduce cost, according to setting
The fixed big temperature difference come control refrigerating water pump frequency converter 6 adjust refrigerating water pump 2 rotating speed, it is to avoid the long-time constant rotational speed of refrigerating water pump 2 operate,
Energy consumption is further reduced, efficiency is improved.
The control method of the workshop post air-conditioning system of the embodiment of the present invention, it is specific as follows：
Temperature Humidity Sensor 5 detects the air dry-bulb temperature and relative humidity at each work position 11, and will detect
Temperature-humidity signal is sent to central controller 7, and central controller 7 calculates the air dew point temperature in each work position 11, with reference to
The air quantity gear of each air cooling heat exchanger 3, sends the aperture of each motorized adjustment water valve 4 of Signal Regulation, so as to ensure each air-cooled heat exchange
The leaving air temp of device 3 is higher than air dew point temperature, prevents air-out discharge surface and the surface sweating of workbench 10.
The regulation of the chilled-water flow of each air cooling heat exchanger 3 of 4 pairs of motorized adjustment water valve, will cause evaporating type condensing refrigeration machine
The change of temperature at 1 chilled water import of group.Temperature sensor 8 and 9 sends the chilled water out temperature signal of detection into
Controller 7 is entreated, compared with the big temperature difference of setting, central controller 7 sends signal, instructs the frequency conversion of refrigerating water pump frequency converter 6, regulation
The rotating speed of refrigerating water pump 2.When the chilled water out temperature difference of detection is more than setting value, the power frequency of refrigerating water pump frequency converter 6
Rise, the speedup of refrigerating water pump 2；When the chilled water out temperature difference of detection is less than setting value, the electric current frequency of refrigerating water pump frequency converter 6
Rate is reduced, and refrigerating water pump 2 slows down.
Flow of the rotating speed of refrigerating water pump 2 to chilled water within the unit interval is directly proportional, the freezing that temperature sensor 8 is detected
The rotating speed of temperature and refrigerating water pump 2 at water inlet, the foundation with off-load is loaded as evaporating type condensing refrigeration unit 1, to maintain
It is temperature-resistant at the chilled water outlet of evaporating type condensing refrigeration unit 1.Specifically, it is total when each air cooling heat exchanger 3 in workshop
During load variations, the change of return water temperature will be caused；When 2 speed governing of refrigerating water pump, the change of chilled-water flow will be caused, both
Variable signal is transported to central controller 7, by the demand of workshop actual refrigerating capacity, instructs evaporating type condensing refrigeration unit 1 to add
Carry or off-load, so that the refrigerating capacity of evaporating type condensing refrigeration unit 1 and the refrigeration duty of factory floor 12 match.
Above-described embodiment is simply to illustrate that the technical concepts and features of the present invention, the purpose is to be to allow in the art
Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent change or modification made according to the essence of present invention, should all covers within the scope of the present invention.
Claims (5)
1. a kind of workshop post air-conditioning system, it is characterised in that set including evaporating type condensing refrigeration unit, refrigerating water pump and respectively
Put between many typhoon cold heat exchangers in each work position in workshop, each air cooling heat exchanger and evaporating type condensing refrigeration unit provided with logical
The freeze cycle of refrigerating water pump foundation is crossed, multiple humitures that the air-conditioning system also includes being separately positioned on each work position in workshop are passed
Sensor, the temperature sensor for being separately positioned at evaporating type condensing refrigeration unit chilled water import and exit, regulation are each air-cooled
Motorized adjustment water valve, the refrigerating water pump frequency converter and central controller of control freezing revolution speed of heat exchanger chilled-water flow, it is described
Each Temperature Humidity Sensor be used to detect the humiture state in each work position, and export humiture corresponding with humiture state
Signal, the temperature sensor is used to detect chilled water import temperature and outlet temperature, and exports corresponding freezing water entrance temperature
Signal is spent, the central controller is used to receive each temperature-humidity signal and chilled water out temperature signal, by adjusting each electricity
The aperture of water adjusting valve is moved to control the leaving air temp of each air cooling heat exchanger to be higher than the air dew point temperature in each work position, and
By controlling the rotating speed of refrigerating water pump frequency converter regulation refrigerating water pump poor to stablize chilled water out temperature.
2. workshop post according to claim 1 air-conditioning system, it is characterised in that the evaporating type condensing refrigeration unit
For high temperature modification evaporating type condensing refrigeration unit.
3. workshop post according to claim 1 or 2 air-conditioning system, it is characterised in that the freeze cycle is big temperature
Poor freeze cycle.
4. workshop post according to claim 3 air-conditioning system, it is characterised in that the central controller also has remote
Journey communication interface, can remotely be connected with automatic building control system.
5. the control method of a kind of workshop post air-conditioning system, it is characterised in that comprise the following steps：
A, the humiture state for detecting each work position in workshop, calculate the air dew point temperature in each work position, detection freezing
Temperature at water entrance, calculates chilled water out temperature poor；.
B, the air quantity gear according to air dew point temperature and air cooling heat exchanger, adjust the aperture of motorized adjustment water valve, make air-cooled change
The leaving air temp of hot device is higher than air dew point temperature.
C, the rotating speed of control refrigerating water pump poor according to chilled water out temperature；
D, according to the temperature and the rotating speed of refrigerating water pump at chilled water import, control the loading of evaporating type condensing refrigeration unit or subtract
Carry, to remain temperature-resistant at chilled water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578964.8A CN107314475A (en) | 2017-07-17 | 2017-07-17 | A kind of workshop post air-conditioning system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710578964.8A CN107314475A (en) | 2017-07-17 | 2017-07-17 | A kind of workshop post air-conditioning system and its control method |
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| Publication Number | Publication Date |
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| CN107314475A true CN107314475A (en) | 2017-11-03 |
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| CN201710578964.8A Pending CN107314475A (en) | 2017-07-17 | 2017-07-17 | A kind of workshop post air-conditioning system and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992810A (en) * | 2022-06-16 | 2022-09-02 | 南京林业大学 | Indoor temperature control system and method |
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| JPH06288601A (en) * | 1993-04-01 | 1994-10-18 | Noritz Corp | Operation control method for air conditioner |
| JPH09236317A (en) * | 1996-02-28 | 1997-09-09 | Mitsubishi Electric Corp | Hot water supply system |
| CN101216198A (en) * | 2007-12-26 | 2008-07-09 | 广州本田汽车有限公司 | Injection moulding shop air conditioner and its control method |
| CN203024330U (en) * | 2012-11-14 | 2013-06-26 | 泰豪科技股份有限公司 | Temperature-limiting and energy-saving type fresh air unit |
| CN104697085A (en) * | 2015-02-12 | 2015-06-10 | 上海境和环境科技有限公司 | Household combination type radiant air conditioning system, control method and corresponding control system |
| CN206959209U (en) * | 2017-07-17 | 2018-02-02 | 中国科学院广州能源研究所 | A kind of workshop post air-conditioning system |
-
2017
- 2017-07-17 CN CN201710578964.8A patent/CN107314475A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06288601A (en) * | 1993-04-01 | 1994-10-18 | Noritz Corp | Operation control method for air conditioner |
| JPH09236317A (en) * | 1996-02-28 | 1997-09-09 | Mitsubishi Electric Corp | Hot water supply system |
| CN101216198A (en) * | 2007-12-26 | 2008-07-09 | 广州本田汽车有限公司 | Injection moulding shop air conditioner and its control method |
| CN203024330U (en) * | 2012-11-14 | 2013-06-26 | 泰豪科技股份有限公司 | Temperature-limiting and energy-saving type fresh air unit |
| CN104697085A (en) * | 2015-02-12 | 2015-06-10 | 上海境和环境科技有限公司 | Household combination type radiant air conditioning system, control method and corresponding control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992810A (en) * | 2022-06-16 | 2022-09-02 | 南京林业大学 | Indoor temperature control system and method |
| CN114992810B (en) * | 2022-06-16 | 2023-08-08 | 南京林业大学 | Indoor temperature control system and method |
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Application publication date: 20171103 |