CN105202654A - Integrated air conditioning unit applied to subway station and control method thereof - Google Patents
Integrated air conditioning unit applied to subway station and control method thereof Download PDFInfo
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- CN105202654A CN105202654A CN201510554359.8A CN201510554359A CN105202654A CN 105202654 A CN105202654 A CN 105202654A CN 201510554359 A CN201510554359 A CN 201510554359A CN 105202654 A CN105202654 A CN 105202654A
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- 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
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- 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
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- 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
- F24F13/28—Arrangement or mounting of filters
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- 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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an integrated air conditioning unit applied to a subway station and a control method thereof. The air conditioning unit adopts an integrated structure and is divided into an upper layer and a lower layer, wherein an air supplying chamber is arranged on the upper layer of the air conditioning unit and comprises a new return air mixing section, a primary efficiency filter section, an electronic dust removal filtering section, a direct expansion evaporation section and an air supplying section; an air exhaust chamber is arranged on the lower layer of the air conditioning unit and comprises a new return air mixing section, a primary efficiency filter section, a direct evaporation condensing section, a compressor section and an air exhaust section; the direct evaporation condensing section of the air exhaust chamber is fixedly provided with an evaporation condenser with a spraying system; condensing water separated from the air supplying chamber enters the spraying system through a pipeline, is sprayed on the evaporation condenser and exchanges heat with a refrigerant in the evaporation condenser. The integrated air conditioning unit adopts an integrated structure, the condensing water of the evaporation evaporator is treated properly, the construction investment is reduced, the project price is reduced, and the air conditioning unit has the advantages of high efficiency, energy conservation and easiness in maintenance.
Description
Technical field
The present invention relates to the air-conditioning equipment field being applied to subway station and the underground space, in particular a kind of integral air conditioner unit and control method thereof being applied to subway station.
Background technology
The combination of tradition subway device rooms air-conditioner set " cooling tower+handpiece Water Chilling Units+end-equipment ", because it adopts water as middle refrigerating medium, chilled water is produced by handpiece Water Chilling Units, chilled water is delivered to air conditioner end equipment by chilled water pump again, for the treatment of indoor waste heat more than wet, indoor air temperature humidity is made to meet instructions for use, as Chinese literature " discussion of subway station plant management information system air-conditioning system " (Sun Zhaojun work, refer to " railway standard design " the 6th phase in 2004) in disclose several air conditioning modes of subway station plant management information system, comprise all-air system, air blower tube disc system, VRV system etc., this several system can provide the air conditioning mode of different condition for subway station, ensure the air quality in subway station, but, these systems use cold water mode to freeze mostly, chilled water transfer pipeline is long, thus the operation energy consumption of chilled water water circulating pump is larger, cold-producing medium and chilled water carried out heat exchange before this, chilled water and air carry out heat exchange again, have employed the mode of twice heat exchange altogether, reduce heat exchange efficiency, operation energy consumption increases.
And the Chinese invention patent application that application number is 201210085322.1 " central air conditioner systems " by name discloses a kind of central air conditioner system, comprise refrigeration compressor, cooling water recirculation system, the chilled water circulatory system and cooling tower; Cooling water recirculation system is made up of coolant pump, choke valve and condenser; The chilled water circulatory system is made up of refrigerating water pump, choke valve, evaporimeter and fan coil; Refrigeration compressor is connected with cooling water recirculation system, the chilled water circulatory system simultaneously, and cooling water recirculation system is connected with the chilled water circulatory system, and the end of cooling water recirculation system is connected to cooling tower.Such air-conditioning system is used in the large space such as factory, subway station, but such air-conditioning system is installed to be needed to install cooling tower simultaneously, and the placement Problems existing of cooling tower mainly concentrate on following some: 1. because cooling tower need be arranged on subway outdoor ground along the line, in crowded city, sometimes cooling tower is laid without space, so that part subway line adopts central cooling mode to solve a little class problem, but the refrigerating loss of air-conditioning system low-temperature receiver can be increased, increase energy consumption, increase overall cost, increase air-conditioning system maintenance cost.2. cooling tower need be arranged on subway outdoor ground along the line, hinders urban look.3. cooling tower can bring noise pollution and health concerns to surrounding resident.
The patent No. is that " a kind of combined integrate air conditioner being applicable to subway station public area " Chinese utility model patent of CN201420025881 discloses a kind of combined integrate air conditioner being applicable to subway station public area, this air conditioner has a rack, the upper strata of rack is provided with air conditioning cabinet, lower interior part is provided with water condenser and magnetic bearing centrifugal compressor, wherein, described air conditioning cabinet is rectangle, and the air conditioning cabinet of this rectangle is followed successively by new wind and return air mixing chamber, filter, direct evaporative cooler and pressure fan from one to other end; The described suction inlet of magnetic bearing centrifugal compressor and the outlet of direct evaporative cooler, outlet is communicated with the entrance of direct evaporative cooler with expansion valve through water condenser successively.This kind of air-conditioner set utilizes water-cooling pattern to carry out heat exchange process to cold-producing medium, it is installed needs and arranges corresponding cooling tower, spray system is set on cooling tower simultaneously, this kind air-conditioning system heat exchange efficiency is low, operation power consumption is high, the condensed water that direct evaporative condenser is separated out does not obtain appropriate process, the condensed water of separating out may damage air-conditioner set, and the problem that cooling tower occupies ground space is not solved well.
Summary of the invention
The object of the present invention is to provide a kind of the integral air conditioner unit and the control method thereof that are applied to subway station, be intended to solve subway station air-conditioner set heat exchange efficiency low, operation energy consumption is high, condensed water can not obtain problems such as dealing carefully with, and solves the problem such as occupation of land, noise, drift ice that cooling tower brings.
Foregoing invention object of the present invention realizes in the following manner:
A kind of integral air conditioner unit being applied to subway station, comprise and be divided into bilevel monolithic construction, described air-conditioner set upper strata is air-supply chamber, and described air-supply chamber is made up of new air-return mixing section, initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section, air supply section; Described air-conditioner set lower floor is air draft chamber, and described air draft chamber is made up of new air-return mixing section, initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section; Wherein, air-conditioner set refrigeration system is formed between described straight swollen evaporator section, compressor section, direct evaporative condenser section, wherein, the direct evaporative condenser section of described air draft chamber is installed with the evaporative condenser with spray system, the condensed water that air-supply chamber is separated out enters spray system by pipeline, evaporative condenser is sprayed, carries out heat exchange with the cold-producing medium in evaporative condenser.
This air-conditioner set eliminates freezing, cooling water system, original cooling tower, handpiece Water Chilling Units, end-equipment is directly replaced with the air-conditioner set of integral type, outdoor new wind only carries out a heat exchange through the straight swollen evaporator section of air-supply chamber, the condensed water of straight swollen condensation segment is diversed in spray system, spray system carries out spraying cooling to the evaporative condenser by cold-producing medium, shower water carries out heat exchange with cold-producing medium wherein, thus improve the Energy Efficiency Ratio of unit, and deal carefully with the condensed water that straight swollen condensation segment is separated out.
Further, described spray system comprises drip tray, connecting water pipe, water circulating pump, nozzle, water-collecting tray, gap, moisturizing float trap and blowoff valve, described drip tray is fixedly installed on the direct evaporator section bottom chamber locular wall of air-supply chamber, and is connected with water-collecting tray by connecting water pipe; Described water circulating pump is fixedly installed in water-collecting tray, and is connected with the nozzle being arranged on evaporative condenser upper end by spray piping, and described water-collecting tray top edge is provided with moisturizing float trap and gap, is also provided with blowoff valve bottom it; Described evaporative condenser is fixedly installed between water-collecting tray and nozzle.
Wherein, the condensed water of the direct evaporator section of described air-supply chamber is pooled in drip tray, and is transported to the water-collecting tray in air draft chamber by connecting water pipe, under the effect of water circulating pump, is sent to nozzle place, sprays evaporative condenser by spray piping; Described moisturizing float trap carries out moisturizing to water-collecting tray; Described gap domination set water pond water level, described blowoff valve regularly carries out blowdown process to the water of water-collecting tray.
Described air-supply chamber is embedded first electronic new air-valve, the first electronic air returning valve, roughing efficiency air filter, electronics dust removal filter, evaporimeter and pressure fan successively, described first electronic new air-valve and the first electronic air returning valve form the new air-return mixing section of air-supply chamber, and described roughing efficiency air filter, electronics dust removal filter, evaporimeter and pressure fan form initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section and air supply section respectively;
It is indoor that outdoor new wind enters described wind pushing cavity, first mix with return air at new air-return mixing section, then carry out dust removal and filtration through roughing efficiency air filter, electronics dust removal filter, enter and to lower the temperature after straight swollen evaporator section utilizes evaporator heat exchange and to separate out condensed water more successively, public area, station or device rooms is discharged to through air supply section, wherein, the first electronic new air-valve and the first electronic air returning valve are for regulating the air-supply new wind of new air-return mixing section of chamber and the mixed proportion of return air.
In addition, described air draft chamber is embedded with the second electronic new air-valve, the second electronic air returning valve, roughing efficiency air filter, evaporative condenser, compressor and exhaust blower successively, described second electronic new air-valve and the second electronic air returning valve form the new air-return mixing section of air draft chamber, and described roughing efficiency air filter, evaporative condenser, compressor and exhaust blower form initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section respectively;
Indoor wind enters in air draft chamber, the ratio first regulated according to the second electronic new air-valve, the second electronic air returning valve at new air-return mixing section mixes with return air, then carry out filtering through roughing efficiency air filter successively and utilize evaporative condenser to carry out heat exchange through direct evaporative condenser section, after heat absorption, temperature raises, the water heat absorption evaporation simultaneously sprayed on evaporative condenser forms steam, after high-temperature gas mixes with steam, be discharged to air draft booth through exhaustion section.
Further, described air-conditioner set refrigeration system is compressor, evaporative condenser, expansion valve, evaporimeter, gas-liquid separator are connected to form refrigerating circuit by refrigeration piping, place compressor air suction mouth is provided with low tension switch, at exhaust outlet of compressor, high-voltage switch gear is set, to regulate the pressure of compressor air suction mouth and exhaust outlet, refrigeration piping between described evaporative condenser and expansion valve is also provided with condensing pressure switch, to control the flow of shower water.
Cold-producing medium is after compressor compression, become the gas of HTHP, then heat exchange is carried out by evaporative condenser, cold-producing medium is condensed into cryogenic high pressure liquid, Low temperature low pressure liquid is become after expansion valve throttling, in evaporimeter, heat absorption flashes to low temperature low pressure gas, then gets back in compressor through gas-liquid separator.
Preferably, described straight swollen evaporator section and direct evaporative condenser section are openable, open when transition season runs, and reduce flowing resistance, save energy consumption.Described compressor is that electrodeless tune carries compressor, can according to load variations, and automatic adjusting energy exports.
Preferably, new wind-warm syndrome humidity sensor is provided with near the pressure fan of described air-supply chamber; The new air-return mixing section of described air-supply chamber and air draft chamber is provided with return air Temperature Humidity Sensor; Air-supply Temperature Humidity Sensor is provided with near the exhaust blower of described air draft chamber.Pluck temperature parameter by Temperature Humidity Sensor, and make comparisons with desired temperature, thus control compressor Energy transmission.
This kind is applied to subway station integral air conditioner unit to be undertaken controlling to realize air-conditioner set by following steps and works under different working modes:
Set return air parameter on the control panel, controller judges according to the signal of the return air temperature of setting and by the signal of new wind-warm syndrome humidity sensor, the transmission of return air Temperature Humidity Sensor, selects different operational modes; When detecting that outdoor air enthalpy is greater than air-conditioning system return air enthalpy, performing minimum fresh air operational mode, performing step S1; When detecting that outdoor air enthalpy is less than or equal to air conditioner system air blast air enthalpy, and when outside air temperature is greater than air-conditioning temperature, performing all-fresh air operational mode, performing step S2; When detect outside air temperature be less than air-conditioning send temperature time, perform transition season operational mode, perform step S3; When receiving fire signal, performing smoke evacuation operational mode, performing step S4.
Step S1: under minimum fresh air operational mode, the electronic new air-valve of air-supply chamber is by 30% aperture, electronic air returning valve is by 70% aperture, the electronic new air-valve of exhaustion section is by 70% aperture, electronic air returning valve is by 30% aperture, and pressure fan and exhaust blower run, compressor operating, water circulating pump runs, and control system regulates the Energy transmission of compressor automatically according to the change of indoor temperature.
Step S2: under all-fresh air operational mode, the electronic new air-valve of air-supply chamber is by 100% aperture, electronic air returning valve is closed, the electronic new air-valve of air draft chamber cuts out, electronic air returning valve is by 100% aperture, and pressure fan, exhaust blower run, compressor operating, water circulating pump runs, and control system regulates the Energy transmission of compressor automatically according to the change of indoor temperature.
Step S3: under transition season operational mode, the electronic new air-valve of air-supply chamber is by 100% aperture, and electronic air returning valve is closed, the electronic new air-valve of air draft chamber cuts out, and electronic air returning valve is by 100% aperture, and pressure fan, exhaust blower run, compressor is out of service, and water circulating pump is out of service.
Step S4: under smoke evacuation operational mode, the electronic new air-valve of air-supply chamber cuts out, and electronic air returning valve is closed, the electronic new air-valve of air draft chamber cuts out, and electronic air returning valve is by 100% aperture, and exhaust blower runs, pressure fan is out of service, and compressor is out of service, and water circulating pump is out of service.
The beneficial effect that technical scheme of the present invention realizes is:
(1) this air-conditioner set is provided with the spray system reclaiming the condensate water device that the direct condensation segment of air-supply chamber is separated out, on the one hand condensed water is reclaimed, prevent condensed water from gathering and damage is caused to the parts of air-conditioner set, on the other hand, condensed water reduces the temperature of the water in spray system, by nozzles spray evaporative condenser, reduce the condensation temperature of refrigeration system, improve the Energy Efficiency Ratio of unit.
(2) this air-conditioner set becomes once directly evaporation and heat-exchange original secondary heat exchange mode, improve evaporating temperature, thus improve heat exchange efficiency, also eliminate freezing simultaneously, cooling water system, freezing owing to lacking, cooling water pump, greatly reduce the operation energy consumption of whole air-conditioning system, in addition, integral air conditioner unit directly replaces original cooling tower, handpiece Water Chilling Units, end-equipment, greatly save Metro Air conditioner equipment and take up an area space, reduce subway station construction costs, be more convenient for safeguarding, simultaneously, because straight swollen evaporator section and direct evaporative condenser section are openable, when transition season runs, reduce air drag, reduce pressure fan wasted work, reach energy-conservation effect.Indoor air draft is discharged to outdoor again after direct evaporative condenser, recycles the energy that air draft is contained.
(3) the electronic new air-valve of air-conditioner set, electronic air returning valve is controlled by controller, and the switch of the equipment such as compressor, spray system and operation, make air-conditioner set can realize the mode of operations such as minimum fresh air operational mode, all-fresh air operational mode, transition season operational mode according to the operating mode of Various Seasonal.Further, this air-conditioner set possesses fire smoke discharging function, can realize the mode of operation run of discharging fume, not need to arrange smoke evacuation system in addition, cost saving.
Accompanying drawing explanation
A kind of integral air conditioner set structure schematic diagram being applied to subway station of Fig. 1;
A kind of integral air conditioner Crew Cooling System structural representation being applied to subway station of Fig. 2;
A kind of integral air conditioner unit spray system structural representation being applied to subway station of Fig. 3;
Wherein, 1-pressure fan, 2-evaporimeter, 3-electronics dust removal filter, 4-roughing efficiency air filter, the electronic air returning valve of 5-first, the electronic new air-valve of 6-first, 7-exhaust blower, 8-compressor, 9-evaporative condenser, the electronic air returning valve of 10-second, the electronic new air-valve of 11-second, 12-gas-liquid separator, 13-low tension switch, 14-high-voltage switch gear, 15-expansion valve, 16-condensing pressure switch, 17-drip tray, 18-connecting water pipe, 19-water circulating pump, 20-spray piping, 21-nozzle, 22-water-collecting tray, 23-gap, 24-moisturizing float trap, 25-blowoff valve.
Detailed description of the invention
Below in conjunction with specific embodiment the present invention made and elaborating further, but embodiment does not limit in any form the present invention.
Be a kind of integral air conditioner unit being applied to subway station as shown in Figure 1, this unit is monolithic construction, is divided into two-layer up and down, and upper strata is air-supply chamber, and lower floor is air draft chamber.Described air-supply chamber is made up of new air-return mixing section, initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section, air supply section; Described air-conditioner set lower floor is air draft chamber, and described air draft chamber is made up of new air-return mixing section, initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section; Wherein, air-conditioner set refrigeration system is formed between described straight swollen evaporator section, compressor section, direct evaporative condenser section, wherein, the direct evaporative condenser section of described air draft chamber is installed with the evaporative condenser 9 with spray system, the condensed water that air-supply chamber is separated out enters spray system by connecting water pipe 18, evaporative condenser 9 is sprayed, carries out heat exchange with the cold-producing medium in evaporative condenser 9.
The spray system of the integral air conditioner unit of subway station is applied to described in being as shown in Figure 3, this spray system comprises drip tray 17, connecting water pipe 18, water circulating pump 19, nozzle 21, water-collecting tray 22, gap 23, moisturizing float trap 24 and blowoff valve 25, described drip tray 17 is fixedly installed on the direct evaporator section bottom chamber locular wall of air-supply chamber, and is connected with water-collecting tray 22 by connecting water pipe 18; Described water circulating pump 19 is fixedly installed in water-collecting tray 22, and is connected with nozzle 21 by spray piping 20, and spray piping 20 is provided with moisturizing float trap 24; Described water-collecting tray 22 top edge is provided with moisturizing float trap 24 and gap 23, is also provided with blowoff valve 25 bottom it; Described evaporative condenser 9 is fixedly installed between water-collecting tray 22 and nozzle 21.,
Wherein, the condensed water of the direct evaporator section of air-supply chamber is pooled in drip tray 17, and is transported to the water-collecting tray 22 in air draft chamber by connecting water pipe 18, under the effect of water circulating pump 19, be sent to nozzle 21 place by spray piping 20, evaporative condenser 9 is sprayed; Described moisturizing float trap 24 pairs of water-collecting trays 22 carry out moisturizing; Described gap 23 domination set water pond 22 water level, the water of described blowoff valve 25 pairs of water-collecting trays 22 regularly carries out blowdown process.
Further, described air-supply chamber is the electronic air returning valve 5 of embedded first electronic new air-valve 6, first, roughing efficiency air filter 4, electronics dust removal filter 3, evaporimeter 2 and pressure fan 1 successively, described first electronic new air-valve 6 and the first electronic air returning valve 5 form the new air-return mixing section of air-supply chamber, and described roughing efficiency air filter 4, electronics dust removal filter 3, evaporimeter 2 and pressure fan 1 form initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section and air supply section respectively;
It is indoor that outdoor new wind enters described wind pushing cavity, first mix with return air at new air-return mixing section, then carry out dust removal and filtration through roughing efficiency air filter 4, electronics dust removal filter 3, enter and to lower the temperature after straight swollen evaporator section utilizes evaporimeter 2 heat exchange and to separate out condensed water more successively, public area, station or device rooms is discharged to through air supply section, wherein, the first electronic new air-valve 6 and the first electronic air returning valve 5 are for regulating the air-supply new wind of new air-return mixing section of chamber and the mixed proportion of return air.
Described air draft chamber is embedded with the electronic air returning valve 10 of the second electronic new air-valve 11, second, roughing efficiency air filter 4, evaporative condenser 9, compressor 8 and exhaust blower 7 successively in addition, described second electronic new air-valve 11 and the second electronic air returning valve 10 form the new air-return mixing section of air draft chamber, and described roughing efficiency air filter, evaporative condenser, compressor and exhaust blower form initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section respectively;
Indoor wind enters in air draft chamber, the ratio first regulated according to the electronic air returning valve 10 of the second electronic new air-valve 11, second at new air-return mixing section mixes with return air, then carry out filtering through roughing efficiency air filter 4 successively and utilize evaporative condenser 9 to carry out heat exchange through direct evaporative condenser section, after heat absorption, temperature raises, the water heat absorption evaporation simultaneously sprayed on evaporative condenser 9 forms steam, after high-temperature gas mixes with steam, be discharged to air draft booth through exhaustion section.
As the refrigeration system that Fig. 2 is this air-conditioner set, this refrigeration system is compressor 8, evaporative condenser 9, expansion valve 15, evaporimeter 2, gas-liquid separator 12 are connected to form refrigerating circuit by refrigeration piping, place compressor 8 air entry is provided with low tension switch 13, at compressor 8 exhaust outlet, high-voltage switch gear 14 is set, to regulate the pressure of compressor 8 air entry and exhaust outlet, refrigeration piping between described evaporative condenser 9 and expansion valve 15 is also provided with condensing pressure switch 16, to control the flow of shower water.
Cold-producing medium is after compressor 8 compresses, become the gas of HTHP, then heat exchange is carried out by evaporative condenser 9, cold-producing medium is condensed into cryogenic high pressure liquid, Low temperature low pressure liquid is become after expansion valve 15 throttling, in evaporimeter 2, heat absorption flashes to low temperature low pressure gas, then gets back in compressor 8 through gas-liquid separator 12.
Described straight swollen evaporator section and direct evaporative condenser section are openable, open when transition season runs, and reduce flowing resistance, save energy consumption.Described compressor 8 carries compressor for electrodeless tune, can according to load variations, and automatic adjusting energy exports.
Wherein, new wind-warm syndrome humidity sensor is provided with near the pressure fan of described air-supply chamber; The new air-return mixing section of described air-supply chamber and air draft chamber is provided with return air Temperature Humidity Sensor; Air-supply Temperature Humidity Sensor is provided with near the exhaust blower of described air draft chamber.Pluck temperature parameter by Temperature Humidity Sensor, and make comparisons with desired temperature, thus control compressor Energy transmission.
This kind is applied to subway station integral air conditioner unit to be undertaken controlling to realize air-conditioner set by following steps and works under different working modes:
Set return air parameter on the control panel, controller judges according to the signal of the return air temperature of setting and by the signal of new wind-warm syndrome humidity sensor, the transmission of return air Temperature Humidity Sensor, selects different operational modes; When detecting that outdoor air enthalpy is greater than air-conditioning system return air enthalpy, performing minimum fresh air operational mode, performing step S1; When detecting that outdoor air enthalpy is less than or equal to air conditioner system air blast air enthalpy, and when outside air temperature is greater than air-conditioning temperature, performing all-fresh air operational mode, performing step S2; When detect outside air temperature be less than air-conditioning send temperature time, perform transition season operational mode, perform step S3; When receiving fire signal, performing smoke evacuation operational mode, performing step S4.
Step S1: under minimum fresh air operational mode, first electronic new air-valve 6 of air-supply chamber is by 30% aperture, first electronic air returning valve 5 is by 70% aperture, second electronic new air-valve 11 of air draft chamber is by 70% aperture, second electronic air returning valve 10 is by 30% aperture, and pressure fan 1 and exhaust blower 7 run, and compressor 8 runs, water circulating pump 19 runs, and control system regulates the Energy transmission of compressor 8 automatically according to the change of indoor temperature.
Step S2: under all-fresh air operational mode, first electronic new air-valve 6 of air-supply chamber is by 100% aperture, first electronic air returning valve 5 is closed, second electronic new air-valve 11 of air draft chamber cuts out, second electronic air returning valve 10 is by 100% aperture, and pressure fan 1, exhaust blower 7 run, and compressor 8 runs, water circulating pump 19 runs, and control system regulates the Energy transmission of compressor automatically according to the change of indoor temperature.
Step S3: under transition season operational mode, first electronic new air-valve 6 of air-supply chamber is by 100% aperture, first electronic air returning valve 5 is closed, second electronic new air-valve 11 of air draft chamber cuts out, second electronic air returning valve 10 is by 100% aperture, pressure fan 1, exhaust blower 7 run, and compressor 8 is out of service, and water circulating pump 19 is out of service.
Step S4: under smoke evacuation operational mode, first electronic new air-valve 6 of air-supply chamber cuts out, first electronic air returning valve 5 is closed, second electronic new air-valve 11 of air draft chamber cuts out, second electronic air returning valve 10 is by 100% aperture, and exhaust blower 7 runs, and pressure fan 1 is out of service, compressor 8 is out of service, and water circulating pump 19 is out of service.
Claims (10)
1. one kind is applied to the integral air conditioner unit of subway station, comprise and be divided into bilevel monolithic construction, described air-conditioner set upper strata is air-supply chamber, and described air-supply chamber is made up of new air-return mixing section, initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section, air supply section; Described air-conditioner set lower floor is air draft chamber, and described air draft chamber is made up of new air-return mixing section, initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section; Wherein, air-conditioner set refrigeration system is formed between described straight swollen evaporator section, compressor section, direct evaporative condenser section, it is characterized in that, the direct evaporative condenser section of described air draft chamber is installed with the evaporative condenser with spray system, the condensed water that air-supply chamber is separated out enters spray system by pipeline, evaporative condenser is sprayed, carries out heat exchange with the cold-producing medium in evaporative condenser.
2. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, described spray system comprises drip tray, connecting water pipe, water circulating pump, nozzle, water-collecting tray, gap, moisturizing float trap and blowoff valve, described drip tray is fixedly installed on the direct evaporator section bottom chamber locular wall of air-supply chamber, and is connected with water-collecting tray by connecting water pipe; Described water circulating pump is fixedly installed in water-collecting tray, and is connected with the nozzle be arranged at above evaporative condenser by spray piping, and described water-collecting tray top edge is provided with moisturizing float trap and gap, is also provided with blowoff valve bottom it.
3. be applied to the integral air conditioner unit of subway station according to claim 2, it is characterized in that, the condensed water of the direct evaporator section of described air-supply chamber is pooled in drip tray, and by Cemented filling to the water-collecting tray in air draft chamber, under the effect of water circulating pump, be sent to nozzle place by pipeline, evaporative condenser is sprayed.
4. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, described air-supply chamber is embedded first electronic new air-valve, the first electronic air returning valve, roughing efficiency air filter, electronics dust removal filter, evaporimeter and pressure fan successively, described first electronic new air-valve and the first electronic air returning valve form the new air-return mixing section of air-supply chamber, and described roughing efficiency air filter, electronics dust removal filter, evaporimeter and pressure fan form initial effect filtering section, electronics dust removal and filtration section, straight swollen evaporator section and air supply section respectively;
It is indoor that outdoor new wind enters described wind pushing cavity, the ratio first regulated according to the first electronic new air-valve, the first electronic air returning valve at new air-return mixing section and return air mixes, then carry out dust removal and filtration through roughing efficiency air filter, electronics dust removal filter, enter and to lower the temperature after straight swollen evaporator section utilizes evaporator heat exchange and to separate out condensed water more successively, be discharged to public area, station or device rooms through air supply section.
5. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, described air draft chamber is embedded with the second electronic new air-valve, the second electronic air returning valve, roughing efficiency air filter, evaporative condenser, compressor and exhaust blower successively, described second electronic new air-valve and the second electronic air returning valve form the new air-return mixing section of air draft chamber, and described roughing efficiency air filter, evaporative condenser, compressor and exhaust blower form initial effect filtering section, directly evaporative condenser section, compressor section, exhaustion section respectively;
Indoor wind enters in air draft chamber, the ratio first regulated according to the second electronic new air-valve, the second electronic air returning valve at new air-return mixing section mixes with return air, then carry out filtering through roughing efficiency air filter successively and utilize evaporative condenser to carry out heat exchange through direct evaporative condenser section, after heat absorption, temperature raises, the water heat absorption evaporation simultaneously sprayed on evaporative condenser forms steam, after high-temperature gas mixes with steam, be discharged to air draft booth through exhaustion section.
6. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, described air-conditioner set refrigeration system is compressor, evaporative condenser, expansion valve, evaporimeter, gas-liquid separator are connected to form refrigerating circuit by refrigeration piping, described compressor air suction mouth is provided with low tension switch, exhaust outlet is provided with high-voltage switch gear, and the refrigeration piping between described evaporative condenser and expansion valve is also provided with condensing pressure switch.
7. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, described straight swollen evaporator section and direct evaporative condenser section are openable.
8. according to claim 5 or 6, be applied to the integral air conditioner unit of subway station, it is characterized in that, described compressor is that electrodeless tune carries compressor.
9. be applied to the integral air conditioner unit of subway station according to claim 1, it is characterized in that, near the pressure fan of described air-supply chamber, be provided with new wind-warm syndrome humidity sensor; The new air-return mixing section of described air-supply chamber and air draft chamber is provided with return air Temperature Humidity Sensor; Air-supply Temperature Humidity Sensor is provided with near the exhaust blower of described air draft chamber.
10. be applied to a control method for the integral air conditioner unit of subway station, it is characterized in that, comprise the following steps:
Step S0: set return air parameter on the control panel, controller judges according to the signal of the return air temperature of setting and by the signal of new wind-warm syndrome humidity sensor, the transmission of return air Temperature Humidity Sensor, selects different operational modes; When detecting that outdoor air enthalpy is greater than air-conditioning system return air enthalpy, performing minimum fresh air operational mode, performing step S1; When detecting that outdoor air enthalpy is less than or equal to air conditioner system air blast air enthalpy, and when outside air temperature is greater than air-conditioning temperature, performing all-fresh air operational mode, performing step S2; When detect outside air temperature be less than air-conditioning send temperature time, perform transition season operational mode, perform step S3; When receiving fire signal, performing smoke evacuation operational mode, performing step S4;
Step S1: under minimum fresh air operational mode, the electronic new air-valve of air-supply chamber is by 30% aperture, electronic air returning valve is by 70% aperture, the electronic new air-valve of air draft chamber is by 70% aperture, electronic air returning valve is by 30% aperture, and pressure fan, exhaust blower run, compressor operating, water circulating pump runs, and control system regulates the Energy transmission of compressor automatically according to the change of indoor temperature;
Step S2: under all-fresh air operational mode, the electronic new air-valve of air-supply chamber is by 100% aperture, electronic air returning valve is closed, the electronic new air-valve of air draft chamber cuts out, electronic air returning valve is by 100% aperture, and pressure fan, exhaust blower run, compressor operating, water circulating pump runs, and control system regulates the Energy transmission of compressor automatically according to the change of indoor temperature;
Step S3: under transition season operational mode, the electronic new air-valve of air supply section is by 100% aperture, and electronic air returning valve is closed, the electronic new air-valve of exhaustion section cuts out, and electronic air returning valve is by 100% aperture, and pressure fan, exhaust blower run, compressor is out of service, and water circulating pump is out of service;
Step S4: under smoke evacuation operational mode, the electronic new air-valve of air supply section cuts out, and electronic air returning valve is closed, the electronic new air-valve of exhaustion section cuts out, and electronic air returning valve is by 100% aperture, and exhaust blower runs, pressure fan is out of service, and compressor is out of service, and water circulating pump is out of service.
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| CN111780304A (en) * | 2020-07-26 | 2020-10-16 | 重庆工业职业技术学院 | Intelligent heating ventilation air conditioner with water-free humidification function |
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