CN107860065B - Charging pile monitoring room air conditioning system - Google Patents
Charging pile monitoring room air conditioning system Download PDFInfo
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- CN107860065B CN107860065B CN201711107981.XA CN201711107981A CN107860065B CN 107860065 B CN107860065 B CN 107860065B CN 201711107981 A CN201711107981 A CN 201711107981A CN 107860065 B CN107860065 B CN 107860065B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 72
- 238000004378 air conditioning Methods 0.000 title claims abstract description 12
- 239000003507 refrigerant Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
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- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 230000033228 biological regulation Effects 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000007791 dehumidification Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
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- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
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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
- F24F3/12—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 characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—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 characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a charging pile monitoring room air conditioning system which comprises an electric control device, a refrigerating system and a humidity control system, wherein the refrigerating system comprises a compressor, a two-position four-way electromagnetic valve, an indoor heat exchange coil, an outdoor heat exchange coil, a mechanical temperature control valve and a capillary tube; the air suction port of the compressor is connected with the first interface, the air discharge port of the compressor is connected with the second interface, the third interface is connected with the indoor heat exchange coil, and the fourth interface is connected with the outdoor heat exchange coil; the outdoor heat exchange coil is connected with the capillary tube, the capillary tube is connected with the mechanical temperature control valve, and the mechanical temperature control valve is connected with the indoor heat exchange coil; the humidity control system includes a humidifier and a humidity sensor. The invention can keep the temperature and the humidity in the monitoring room in a constant interval throughout the year, meets the requirement of the charging pile monitoring room, and adjusts the flow of the refrigerant by utilizing the temperature change in the monitoring room, so that the system keeps a stable running state for a long time, frequent start and stop of each part is not needed, and the service life of each part of the air conditioning system of the charging pile monitoring room is prolonged.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a charging pile monitoring room air conditioning system.
Background
Compared with the traditional automobile, the electric automobile has the characteristics of high energy utilization efficiency and little (or no) environmental pollution, and the development of the new energy automobile can relieve energy supply and environmental protection pressure. Conventional automotive fuels are derived from petroleum, which is a non-renewable energy source with a limited total amount. On one hand, the petroleum price continuously runs at a high level, so that the production and living costs of people are improved; on the other hand, the country is used as a large country of petroleum import, and the external dependence of petroleum is overshadowed, which is unfavorable for national security. The popularization of the electric automobile is beneficial to reducing the petroleum consumption, and the energy supply pressure can be effectively relieved.
In addition, the electric automobile is beneficial to environmental protection. The automobile exhaust contains a large amount of harmful substances, mainly including solid suspended particles, carbon monoxide, nitrogen oxides, sulfur dioxide and the like, and endangering the respiratory system and the cardiovascular system of human beings; meanwhile, automobile exhaust contains a large amount of carbon dioxide, which can aggravate the current greenhouse effect. The situation can be effectively changed by the electric automobile, and in actual use, the tail gas emission of the electric automobile is obviously lower than that of a traditional automobile: the tail gas emission of the hybrid electric vehicle can be reduced by 5% -50%, and the pure electric vehicle can really realize zero emission and zero pollution.
Aiming at new energy automobiles, china starts to gradually leave the national and provincial city grade patch policies from 2009. In 2009, 11 months, the first electric automobile in China demonstrated a charging station, the Shanghai channel stream electric automobile charging station, was accepted by an expert in Shanghai. At the end of 12 months in 2009, two electric vehicle charging stations and 134 charging piles are formally put into use in the first batch by Shenzhen investment of a southern power grid, and in 3 months in 2010, a large electric vehicle charging station, namely a Tangshan south lake electric vehicle charging station, is typically designed by a first seat of a national power grid system investment of a North China power grid, and is formally put into commercial operation. In order to adapt to the rapid development of the electric automobile industry, electric automobile charging stations are established in various places in China, local governments become key thrusters for the construction of the electric automobile charging stations, and in recent years, the national electric automobile matching projects have emerged like spring bamboo shoots after rain.
The charging station can be divided into four sub-modules according to the function: distribution system, charging system, battery dispatch system, charging station monitored control system. A complete charging station is composed of five parts including a distribution room, a central monitoring room, a charging area, a battery replacement area and a battery maintenance room.
The Charging pile is named as Charging Point, the direct current Charging pile and the alternating current Charging pile are collectively called, and the function of the Charging pile is similar to that of a oiling machine in a gas station. Each charging pile is provided with a charging plug, and the charging piles can charge electric vehicles of various types according to different voltage grades. The electric automobile fills electric pile and adopts the alternating current, direct current power supply mode, needs purpose-made charging card to punch the card and uses, fills electric pile display screen and can show data such as charge quantity, expense, charging time.
Charging stations generally divide into three modes for charging automobiles. (1) The common charging mode is so-called conventional charging or slow charging, and the charging mode is that the conventional alternating current plug is plugged into a vehicle, 5 to 8 hours or 2 to 6 hours are needed, the mode is mainly an alternating current charging mode, 220V or 380V alternating current power supply is externally provided for a vehicle-mounted charger of the electric vehicle, and the vehicle-mounted charger charges a power storage battery. In general, small-sized pure electric vehicles and externally-connected chargeable hybrid electric vehicles (Plug in Hybrid Electric Vehicle, PHEV) mostly adopt the mode, and the charging mode is mainly completed by a charging pile.
(2) The fast charging requires a larger charging current, which requires a fast charging station to be built, which does not require the battery to be fully charged, but only to meet the need of continuing the driving, and in this charging mode, only 50 to 80% of the battery is charged in a period of 20 to 30 minutes. The charging mode is mainly realized by a charger in the charging station, and the ground charger directly outputs direct-current electric energy to charge the vehicle-mounted power storage battery, so that the electric vehicle only needs to provide charging and related communication interfaces;
(3) The battery is directly replaced.
The charging station is generally built with a plurality of charging piles to meet the requirement of charging a plurality of electric vehicles simultaneously. The charging station comprises a plurality of charging piles, a plurality of components such as a power distribution system and the like, and the monitoring room is required to monitor all parts of equipment in a centralized manner, so that abnormal operation of certain equipment can be found and processed in time. Because the electrical equipment of the monitoring room is sensitive to the environmental temperature and humidity conditions, the temperature and humidity of the monitoring room need to be adjusted. If the technical specification of the Shenzhen electric automobile charging system provides that the temperature of the monitoring room is controlled within the range of 18-25 ℃, the temperature change rate should not exceed +/-5 ℃ per hour; the relative humidity is preferably controlled between 45% and 75% and in any case no condensation is produced.
Disclosure of Invention
The invention aims to provide a charging pile monitoring room air conditioning system which is used for controlling the temperature and the humidity in a monitoring room to be in a set interval, and keeping the stable running state of the system by utilizing mechanical force so as to reduce the start and stop times of all parts.
In order to achieve the purpose, the charging pile monitoring room air conditioning system comprises an electric control device, a refrigerating system and a humidity control system, wherein the refrigerating system comprises a compressor, a two-position four-way electromagnetic valve, an indoor heat exchange coil, an outdoor heat exchange coil, a mechanical temperature control valve and a capillary tube;
the two-position four-way electromagnetic valve is provided with a first interface, a second interface, a third interface and a fourth interface; the air suction port of the compressor is connected with the first interface through a refrigerant pipeline, the air discharge port of the compressor is connected with the second interface through a refrigerant pipeline, the third interface is connected with the indoor heat exchange coil pipe through a refrigerant pipeline, and the fourth interface is connected with the outdoor heat exchange coil pipe through a refrigerant pipeline; the outdoor heat exchange coil is connected with one end of the capillary tube through a refrigerant pipeline, the other end of the capillary tube is connected with a mechanical temperature control valve through a refrigerant pipeline, and the mechanical temperature control valve is connected with the indoor heat exchange coil through a refrigerant pipeline;
the mechanical temperature control valve comprises a valve body, wherein a vertically arranged inner cavity is arranged in the valve body, the horizontal section of the inner cavity is circular, the side wall of the inner cavity is connected with a valve core in a sliding mode, the valve core comprises a top plate, a bottom plate and a connecting rod connected between the top plate and the bottom plate, and the top plate and the bottom plate are respectively matched with the side wall of the inner cavity in a sliding sealing mode; the top plate, the bottom plate, the connecting rod and the side wall of the inner cavity enclose an annular cavity; a first valve hole is formed in the valve body at one side, the inner end of the first valve hole is communicated with the inner cavity of the valve body, the outer end of the first valve hole is connected with a first valve pipe, a second valve hole is formed in the valve body at the opposite side of the first valve hole, the inner end of the second valve hole is communicated with the inner cavity of the valve body, and the outer end of the second valve hole is connected with a second valve pipe;
a pressure spring is connected between the top end of the top plate and the top wall of the inner cavity of the valve body; the bottom plate is pressed downwards and connected with a push rod, the diameter of the upper part of the push rod is larger than that of the lower part of the push rod, the upper part of the push rod penetrates through the valve body and stretches into the inner cavity of the valve body, the upper part of the push rod is in sliding sealing fit with the valve body, and the top end of the push rod is in pressing fit with the bottom plate; a fixed seat is arranged below the valve body, a vertical through hole is arranged in the fixed seat, and the lower part of the push rod downwards extends into the vertical through hole and is in sliding sealing fit with the hole wall of the vertical through hole; the lower end opening of the vertical through hole is connected with an expansion liquid connecting pipe, the expansion liquid connecting pipe is connected with a temperature sensing box, and expansion liquid is contained in the temperature sensing box; the temperature sensing box is arranged in the monitoring chamber;
the valve core is provided with an upper limit position and a lower limit position, and the first valve hole is always communicated with the annular cavity when the valve core is positioned between the upper limit position and the lower limit position; the valve core is positioned at the upper limit position, the second valve hole is isolated from the annular cavity, the valve core is positioned at the initial position of the valve core when the valve core is positioned at the lower limit position, and the second valve hole is completely communicated with the annular cavity when the valve core is positioned at the initial position; the valve core is provided with a balance position, the balance position of the valve core is positioned between an upper limit position and a lower limit position, when the valve core is positioned at the balance position, the top end of the annular cavity is higher than the top end of the second valve hole, the bottom end of the annular cavity is lower than the top end of the second valve hole, and the annular cavity and the second valve hole are in a partial communication state; the height of the annular cavity is equal to the height of the second valve hole; the first valve pipe is connected with the indoor heat exchange coil pipe through a refrigerant pipeline, and the second valve pipe is connected with the capillary pipe through a refrigerant pipeline;
the humidity control system comprises a humidifier and a humidity sensor, wherein the humidifier and the humidity sensor are both positioned in the monitoring room and are both connected with the electric control device; the electric control device is connected with a temperature sensor which is arranged in the monitoring room.
The temperature sensing case is connected with the regulation pipe, and the regulation pipe is connected with the regulation case, is equipped with the regulation solenoid valve on the regulation pipe.
A bypass pipeline is connected between the refrigerant pipeline at the first valve pipe and the refrigerant pipeline at the second valve pipe, and a bypass electromagnetic valve is arranged on the bypass pipeline.
And an exhaust fan is arranged at the top of the side wall of the monitoring room and is connected with an electric control device.
The electric control device is a singlechip.
The expansion liquid is mercury or ethanol.
An upper positioning ring is arranged on the side wall of the inner cavity at the upper limit position of the valve core, and a lower positioning ring is arranged on the side wall of the inner cavity at the lower limit position of the valve core; the upper surface of the fixing seat surrounds the push rod and is provided with an upper sealing ring, and the lower surface of the fixing seat surrounds the expansion liquid connecting pipe and is provided with a lower sealing ring.
The invention has simple structure, is convenient to install and use, can keep the temperature and the humidity in the monitoring room at a constant interval all the year round, and meets the requirement of the charging pile monitoring room. In the prior art, the temperature of a refrigeration system needs to be controlled by frequently starting and stopping various components such as a compressor, and the components such as the compressor are started when the temperature is higher or lower than a set temperature interval, so that working conditions (parameters such as pressure, temperature and the like) of various positions in the system are frequently changed, and the service lives of corresponding elements are also reduced when the components are frequently started and stopped. The mechanical temperature control valve is arranged, and the flow rate of the refrigerant can be regulated by utilizing the temperature change in the monitoring room in combination with a corresponding operation method, so that the cooling capacity (or heating capacity) of the refrigerating system is kept constant while the temperature in the monitoring room is kept stable, and the system is kept in a stable operation state for a long time without frequently starting and stopping various components such as a compressor. The steady state operation also extends the useful life of the components in the system.
The adjusting box and the adjusting solenoid valve can be arranged, the opening degree of the adjusting solenoid valve can be controlled, the amount of expansion liquid entering the adjusting box can be adjusted, the high-low position of the valve core under the same temperature condition can be conveniently controlled, the area of the second valve hole communicated with the annular cavity can be further controlled, the flow of the refrigerant can be adjusted, the refrigerating capacity can be adjusted, and the purpose of adjusting the stable temperature value under the stable working condition can be finally achieved.
Through adjusting the solenoid valve, can be more meticulously with the temperature in the control room steady between 21 ℃ and 25 ℃, reduce the temperature fluctuation in the control room, need not frequently start and stop the compressor, prolong the life of compressor. The temperature control mode is mainly mechanical temperature control, the temperature control purpose can be automatically realized after the opening degree of the electromagnetic valve is regulated, the whole system can continuously run in a constant state, the continuous intervention of an electric control device and the continuous change of the working states of all parts are not needed, the system running is more stable, and the service life of all equipment is prolonged.
Drawings
FIG. 1 is a schematic diagram of a refrigeration system according to the present invention;
FIG. 2 is a schematic diagram of the electrical principle of the present invention;
FIG. 3 is a schematic diagram of the structure of the mechanical temperature control valve connected with the temperature sensing box when the valve core is positioned at the upper limit position;
FIG. 4 is a schematic diagram of the structure of the mechanical temperature control valve connected with the temperature sensing box when the valve core is positioned at the lower limit position;
fig. 5 is a schematic structural view of the mechanical temperature control valve connected to the temperature sensing box when the valve core is at the upper limit position and the lower limit position, i.e., the balance position.
Description of the embodiments
As shown in fig. 1 to 5, the air conditioning system of the charging pile monitoring room of the present invention comprises an electric control device 1, a refrigerating system and a humidity control system.
The refrigerating system comprises a compressor 2, a two-position four-way electromagnetic valve 3, an indoor heat exchange coil 4, an outdoor heat exchange coil 5, a mechanical temperature control valve 6 and a capillary tube 8;
the two-position four-way electromagnetic valve 3 is provided with a first interface 9, a second interface 10, a third interface 11 and a fourth interface 12; the air suction port of the compressor 2 is connected with the first connector 9 through a refrigerant pipeline 13, the air discharge port of the compressor 2 is connected with the second connector 10 through the refrigerant pipeline 13, the third connector 11 is connected with the indoor heat exchange coil 4 through the refrigerant pipeline 13, and the fourth connector 12 is connected with the outdoor heat exchange coil 5 through the refrigerant pipeline 13; the outdoor heat exchange coil 5 is connected with one end of the capillary tube 8 through a refrigerant pipeline 13, the other end of the capillary tube 8 is connected with the mechanical temperature control valve 6 through the refrigerant pipeline 13, and the mechanical temperature control valve 6 is connected with the indoor heat exchange coil 4 through the refrigerant pipeline 13;
the mechanical temperature control valve 6 comprises a valve body 15, a vertically arranged inner cavity 16 is arranged in the valve body 15, the horizontal section of the inner cavity 16 is circular, the side wall of the inner cavity 16 is slidably connected with a valve core, the valve core comprises a top plate 17, a bottom plate 18 and a connecting rod 19 connected between the top plate 17 and the bottom plate 18, and the top plate 17 and the bottom plate 18 are slidably and hermetically matched with the side wall of the inner cavity 16 respectively; the top plate 17, the bottom plate 18, the connecting rod 19 and the side wall of the inner cavity 16 enclose an annular cavity 20; a first valve hole 21 is formed in the valve body 15 on one side, the inner end of the first valve hole 21 is communicated with the inner cavity 16 of the valve body 15, the outer end of the first valve hole is connected with a first valve pipe 22, a second valve hole 23 is formed in the valve body 15 on the opposite side of the first valve hole 21, the inner end of the second valve hole 23 is communicated with the inner cavity 16 of the valve body 15, and the outer end of the second valve hole 23 is connected with a second valve pipe 24;
a pressure spring 25 is connected between the top end of the top plate 17 and the top wall of the inner cavity 16 of the valve body 15; the bottom plate 18 is pressed downwards and connected with a push rod 26, the diameter of the upper part of the push rod 26 is larger than that of the lower part, the upper part of the push rod 26 penetrates through the valve body 15 and stretches into the inner cavity 16 of the valve body 15, the upper part of the push rod 26 is in sliding sealing fit with the valve body 15, and the top end of the push rod 26 is in pressing fit with the bottom plate 18; a fixed seat 27 is arranged below the valve body 15, a vertical through hole 28 is arranged in the fixed seat 27, and the lower part of the push rod 26 downwards extends into the vertical through hole 28 and is in sliding sealing fit with the hole wall of the vertical through hole 28; the lower end opening of the vertical through hole 28 is connected with an expansion liquid connecting pipe 29, the expansion liquid connecting pipe 29 is connected with a temperature sensing box 30, and the temperature sensing box 30 is filled with expansion liquid 31; the temperature sensing box 30 is installed in the monitoring room;
the valve core has an upper limit position and a lower limit position, and the first valve hole 21 is always communicated with the annular cavity 20 when the valve core is positioned between the upper limit position and the lower limit position; the second valve hole 23 is isolated from the annular cavity 20 when the valve core is positioned at the upper limit position, the valve core is positioned at the initial position when the valve core is positioned at the lower limit position, and the second valve hole 23 is completely communicated with the annular cavity 20 when the valve core is positioned at the initial position; the valve core has a balance position, the balance position of the valve core is positioned between an upper limit position and a lower limit position, when the valve core is positioned at the balance position, the top end of the annular cavity 20 is higher than the top end of the second valve hole 23, the bottom end of the annular cavity 20 is lower than the top end of the second valve hole 23, and the annular cavity 20 is in a state of being partially communicated with the second valve hole 23; the height of the annular cavity 20 is equal to the height of the second valve hole 23; the first valve tube 22 is connected to the indoor heat exchange coil 4 through the refrigerant line 13, and the second valve tube 24 is connected to the capillary tube 8 through the refrigerant line 13.
The humidity control system comprises a humidifier 39 and a humidity sensor 40, wherein the humidifier 39 and the humidity sensor 40 are both positioned in the monitoring room and are both connected with the electric control device 1; the electric control device 1 is connected with a temperature sensor 41, and the temperature sensor 41 is arranged in the monitoring room.
The temperature sensing box 30 is connected with an adjusting pipe 36, the adjusting pipe 36 is connected with an adjusting box 37, and an adjusting electromagnetic valve 38 is arranged on the adjusting pipe 36.
A bypass pipeline 14 is connected between the refrigerant pipeline 13 at the first valve pipe 22 and the refrigerant pipeline 13 at the second valve pipe 24, and a bypass electromagnetic valve 7 is arranged on the bypass pipeline 14.
An exhaust fan 42 is arranged at the top of the side wall of the monitoring room, and the exhaust fan 42 is connected with the electric control device 1. The exhaust fan 42 can conveniently exhaust indoor air, and meanwhile, the micro negative pressure state in the monitoring room can enable outdoor fresh air to enter the monitoring room, so that the freshness of the indoor air is improved. The electric control device 1 is a singlechip. The expansion liquid 31 is mercury or ethanol. Mercury and ethanol have larger expansion coefficients, and the volume change of the mercury and the ethanol is larger along with the change of temperature, so that the production pressure is changed, and the valve core has relatively larger stroke.
The side wall of the inner cavity 16 at the upper limit position of the valve core is provided with an upper positioning ring 32, and the side wall of the inner cavity 16 at the lower limit position of the valve core is provided with a lower positioning ring 33. The upper and lower retaining rings 32, 33 can define the upper and lower limit positions of the spool. The upper surface of the fixing seat 27 surrounds the push rod 26 and is provided with an upper sealing ring 34, and the lower surface of the fixing seat 27 surrounds the expansion liquid connecting pipe 29 and is provided with a lower sealing ring 35, so that the sealing performance of the two positions is enhanced.
The invention also discloses an operation method of the charging pile monitoring room air conditioning system, which comprises a temperature control operation method and a humidity control operation method;
the temperature control operation method comprises the following steps: the electric control device 1 receives a temperature signal of the temperature sensor 41 at the time of initial operation;
when the initial temperature in the monitoring room is higher than 25 ℃ (the situation is mainly summer), the electric control device 1 controls the refrigeration system to operate according to a first operation mode; when the temperature in the monitoring room is less than or equal to 25 ℃ and more than or equal to 18 ℃ (the situation is mainly spring or autumn), the electric control device 1 controls the compressor 2 to be in a stop state; when the temperature in the monitoring room is less than 18 ℃ (in this case, the winter is the main), the electric control device 1 controls the refrigeration system to operate in the second operation mode;
the first mode of operation is: the electric control device 1 controls the first interface 9 and the third interface 11 of the two-position four-way electromagnetic valve 3 to be communicated, and simultaneously the second interface 10 and the fourth interface 12 are communicated; the electric control device 1 starts the compressor 2 and closes the bypass electromagnetic valve 7, high-temperature high-pressure gaseous refrigerant flows out from the exhaust port of the compressor 2, enters the outdoor heat exchange coil 5 through the second interface 10, the fourth interface 12 and the refrigerant pipeline 13, condenses and releases heat in the outdoor heat exchange coil 5, and dissipates heat to the outside; the high-temperature high-pressure liquid refrigerant flows out of the outdoor heat exchange coil 5, then enters the capillary tube 8 through the refrigerant pipeline 13, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube 8, the low-temperature liquid refrigerant enters the second valve tube 24 of the mechanical temperature control valve 6 through the refrigerant pipeline 13, then enters the indoor heat exchange coil 4 through the first valve tube 22 and then enters the indoor heat exchange coil 4 through the refrigerant pipeline 13, and the low-temperature liquid refrigerant evaporates and absorbs heat in the indoor heat exchange coil 4, so that the temperature in a monitoring room is reduced; when the temperature in the monitoring room is reduced to be lower than 18 ℃, the electric control device 1 stops the compressor 2;
the second mode of operation is: the electric control device 1 controls the first interface 9 and the fourth interface 12 of the two-position four-way electromagnetic valve 3 to be communicated, and simultaneously the second interface 10 and the third interface 11 are communicated;
the electric control device 1 starts the compressor 2 and closes the bypass electromagnetic valve 7, high-temperature high-pressure gaseous refrigerant flows out from the exhaust port of the compressor 2, enters the indoor heat exchange coil 4 through the second interface 10, the third interface 11 and the refrigerant pipeline 13, and condenses to release heat in the indoor heat exchange coil 4, so that the temperature in a monitoring room is increased; after the high-temperature high-pressure liquid refrigerant flows out of the indoor heat exchange coil 4, the high-temperature high-pressure liquid refrigerant enters the mechanical temperature control valve 6 through the refrigerant pipeline 13 through the first valve pipe 22, then flows out of the mechanical temperature control valve 6 through the second valve pipe 24, then enters the capillary tube 8 through the refrigerant pipeline 13, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube 8, the low-temperature liquid refrigerant enters the outdoor heat exchange coil 5 through the refrigerant pipeline 13, the low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchange coil 5, and the cold energy is emitted outdoors; when the temperature in the monitoring room rises to be higher than 25 ℃, the electric control device 1 stops the compressor 2; after the compressor 2 is stopped, the temperature in the monitoring room gradually decreases, and when the temperature in the monitoring room is lower than 18 ℃ again, the electric control device 1 turns on the compressor 2 again;
in the mechanical temperature control valve 6, the downward pressing force of the spring and the self weight of the valve core form lower pressure on the valve core, and the upward pressing force of the expansion liquid 31 forms upper pressure; in the second operation mode, the temperature in the monitoring chamber is more than or equal to 18 ℃ and less than or equal to 25 ℃ in the operation state of the compressor 2; the valve core is positioned at the balance position, the upper pressure and the lower pressure reach the balance state, the upper part of the second valve hole 23 is communicated with the annular cavity 20, and the lower part of the second valve hole 23 is isolated from the annular cavity 20; when the temperature in the monitoring chamber is gradually increased between 18 ℃ and 25 ℃, the volume of the expansion liquid 31 is gradually expanded, and the push rod 26 pushes the bottom plate 18 upwards, so that the valve core and the annular cavity 20 move upwards, the communication area between the annular cavity 20 and the second valve hole 23 is reduced, the resistance of the valve core to the refrigerant is increased, the flow rate of the refrigerant is reduced, and the heat emitted by the indoor heat exchange coil 4 into the monitoring chamber is reduced; conversely, when the temperature in the monitoring chamber is gradually reduced between 18 ℃ and 25 ℃, the volume of the expansion liquid 31 is gradually contracted, the push rod 26 moves downwards under the action of gravity, and the valve core moves downwards along with the push rod 26 under the action of spring elastic force, so that the communication area between the annular cavity 20 and the second valve hole 23 is increased, the resistance of the valve core to the refrigerant is reduced, the flow rate of the refrigerant is increased, the heat emitted from the indoor heat exchange coil 4 into the monitoring chamber is increased, and the temperature in the monitoring chamber is kept in a stable state between 18 ℃ and 25 ℃;
the humidity control operation method comprises the following steps: in the initial state, the electric control device 1 receives the signal of the temperature sensor 41, and when the relative humidity is lower than 45%, the operation is performed in a first operation mode; when the relative humidity is greater than or equal to 45% and less than 70%, the electric control device 1 only monitors the change condition of the relative humidity, and does not perform humidification or dehumidification operation; when the relative humidity is higher than 75%, the operation is carried out in a second operation mode;
the first mode of operation is: the electric control device 1 turns on the humidifier 39 to humidify the monitoring room; turning off the humidifier 39 when the relative humidity in the monitoring chamber reaches 70%; the humidity in the monitoring chamber gradually decreases after the humidifier 39 is turned off, and when the relative humidity is lower than 45%, the above steps are repeated, so that the relative humidity in the monitoring chamber is controlled to be between 45% and 70%;
the second mode of operation is: the electric control device 1 starts the compressor 2 to enable the first interface 9 and the third interface 11 of the two-position four-way electromagnetic valve 3 to be communicated, and meanwhile, the second interface 10 and the fourth interface 12 are communicated; the high-temperature high-pressure gaseous refrigerant flows out from the exhaust port of the compressor 2, enters the outdoor heat exchange coil 5 through the second interface 10, the fourth interface 12 and the refrigerant pipeline 13, condenses and releases heat in the outdoor heat exchange coil 5, and dissipates heat outdoors; after the high-temperature high-pressure liquid refrigerant flows out of the outdoor heat exchange coil 5, the high-temperature high-pressure liquid refrigerant enters the capillary tube 8 through the refrigerant pipeline 13, the pressure and the temperature of the refrigerant are reduced when the high-temperature high-pressure liquid refrigerant passes through the capillary tube 8, the low-temperature liquid refrigerant enters the indoor heat exchange coil 4 through the refrigerant pipeline 13, and the low-temperature liquid refrigerant evaporates and absorbs heat in the indoor heat exchange coil 4, so that the temperature in a monitoring room is reduced. Monitoring the moisture in the indoor air to form condensation water after the indoor temperature is reduced to below the dew point temperature; after the temperature in the monitoring room is kept below the dew point temperature for 15 minutes, ending the second operation mode, reducing the relative humidity after the temperature in the monitoring room rises, and starting the humidity control operation method from the initial state by the electric control device; and stopping the temperature control operation method when the humidity control operation method is performed.
In the initial state of the first and second modes of operation of the temperature-controlled operating method, the regulating solenoid valve 38 is in the closed state.
In the second mode of operation of the wet control method, the bypass solenoid valve 7 is opened, so that the mechanical temperature control valve 6 loses the effect of regulating the refrigerant flow; after the second operating mode has ended, the bypass solenoid valve 7 is closed.
Since the refrigerant flow does not need to be finely adjusted during dehumidification, the bypass solenoid valve 7 is opened, unnecessary flow adjustment of the mechanical temperature control valve 6 can be avoided, and energy is saved correspondingly.
In the second operation mode of the temperature control operation method, if the temperature in the monitoring chamber is stably kept between 18 ℃ and 25 ℃ and is lower than 21 ℃, the electric control device 1 increases the opening degree of the regulating electromagnetic valve 38, so that part of the expansion liquid 31 enters the regulating tank 37 through the regulating pipe 36, and further under the condition of the same monitoring chamber temperature, the push rod 26 is provided with a position lower than before the opening degree of the regulating electromagnetic valve 38 is increased, under the action of spring elastic force, the valve core moves downwards along with the push rod 26, so that the communication area between the annular cavity 20 and the second valve hole 23 is increased, the resistance of the valve core to the refrigerant is reduced, the flow rate of the refrigerant is increased, the heat emitted by the indoor heat exchange coil 4 into the monitoring chamber is increased, the temperature in the monitoring chamber is further increased until the upper pressure and the lower pressure reach a new balance, and the stable temperature in the monitoring chamber is increased; if the new stable temperature in the monitoring room is still lower than 21 ℃, the electric control device 1 continues to increase the opening degree of the regulating electromagnetic valve 38; if the new stable temperature in the monitoring chamber reaches or exceeds 25 ℃, the electronic control device 1 reduces the opening degree of the regulating electromagnetic valve 38; the electronic control device 1 increases or decreases the opening degree of the regulating solenoid valve 38 according to the above method according to the stable temperature in the monitoring room until the new stable temperature in the monitoring room is less than 25 ℃ and equal to or greater than 21 ℃, at which time the electronic control device 1 keeps the opening degree of the regulating solenoid valve 38.
By adjusting the solenoid valve 38, the temperature in the monitoring chamber can be stabilized between 21 ℃ and 25 ℃ more finely, the temperature fluctuation in the monitoring chamber is reduced, the compressor 2 does not need to be started or stopped frequently, and the service life of the compressor 2 is prolonged. The temperature control mode is mainly mechanical temperature control, the temperature control purpose can be automatically realized after the opening degree of the electromagnetic valve 38 is regulated, the whole system can continuously run in a constant state, the continuous intervention of the electric control device 1 and the continuous change of the working states of all parts are not needed, the system running is more stable, and the service life of all equipment is prolonged.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
Claims (3)
1. Fill electric pile control room air conditioning system, including electric control device, refrigerating system and accuse wet system, its characterized in that:
the refrigerating system comprises a compressor, a two-position four-way electromagnetic valve, an indoor heat exchange coil, an outdoor heat exchange coil, a mechanical temperature control valve and a capillary tube;
the two-position four-way electromagnetic valve is provided with a first interface, a second interface, a third interface and a fourth interface; the air suction port of the compressor is connected with the first interface through a refrigerant pipeline, the air discharge port of the compressor is connected with the second interface through a refrigerant pipeline, the third interface is connected with the indoor heat exchange coil pipe through a refrigerant pipeline, and the fourth interface is connected with the outdoor heat exchange coil pipe through a refrigerant pipeline; the outdoor heat exchange coil is connected with one end of the capillary tube through a refrigerant pipeline, the other end of the capillary tube is connected with a mechanical temperature control valve through a refrigerant pipeline, and the mechanical temperature control valve is connected with the indoor heat exchange coil through a refrigerant pipeline;
the mechanical temperature control valve comprises a valve body, wherein a vertically arranged inner cavity is arranged in the valve body, the horizontal section of the inner cavity is circular, the side wall of the inner cavity is connected with a valve core in a sliding mode, the valve core comprises a top plate, a bottom plate and a connecting rod connected between the top plate and the bottom plate, and the top plate and the bottom plate are respectively matched with the side wall of the inner cavity in a sliding sealing mode; the top plate, the bottom plate, the connecting rod and the side wall of the inner cavity enclose an annular cavity; a first valve hole is formed in the valve body at one side, the inner end of the first valve hole is communicated with the inner cavity of the valve body, the outer end of the first valve hole is connected with a first valve pipe, a second valve hole is formed in the valve body at the opposite side of the first valve hole, the inner end of the second valve hole is communicated with the inner cavity of the valve body, and the outer end of the second valve hole is connected with a second valve pipe;
a pressure spring is connected between the top end of the top plate and the top wall of the inner cavity of the valve body; the bottom plate is pressed downwards and connected with a push rod, the diameter of the upper part of the push rod is larger than that of the lower part of the push rod, the upper part of the push rod penetrates through the valve body and stretches into the inner cavity of the valve body, the upper part of the push rod is in sliding sealing fit with the valve body, and the top end of the push rod is in pressing fit with the bottom plate; a fixed seat is arranged below the valve body, a vertical through hole is arranged in the fixed seat, and the lower part of the push rod downwards extends into the vertical through hole and is in sliding sealing fit with the hole wall of the vertical through hole; the lower end opening of the vertical through hole is connected with an expansion liquid connecting pipe, the expansion liquid connecting pipe is connected with a temperature sensing box, and expansion liquid is contained in the temperature sensing box; the temperature sensing box is arranged in the monitoring chamber;
the valve core is provided with an upper limit position and a lower limit position, and the first valve hole is always communicated with the annular cavity when the valve core is positioned between the upper limit position and the lower limit position; the valve core is positioned at the upper limit position, the second valve hole is isolated from the annular cavity, the valve core is positioned at the initial position of the valve core when the valve core is positioned at the lower limit position, and the second valve hole is completely communicated with the annular cavity when the valve core is positioned at the initial position; the valve core is provided with a balance position, the balance position of the valve core is positioned between an upper limit position and a lower limit position, when the valve core is positioned at the balance position, the top end of the annular cavity is higher than the top end of the second valve hole, the bottom end of the annular cavity is lower than the top end of the second valve hole, and the annular cavity and the second valve hole are in a partial communication state; the height of the annular cavity is equal to the height of the second valve hole; the first valve pipe is connected with the indoor heat exchange coil pipe through a refrigerant pipeline, and the second valve pipe is connected with the capillary pipe through a refrigerant pipeline;
the humidity control system comprises a humidifier and a humidity sensor, wherein the humidifier and the humidity sensor are both positioned in the monitoring room and are both connected with the electric control device; the electric control device is connected with a temperature sensor which is arranged in the monitoring room;
the temperature sensing box is connected with an adjusting pipe, the adjusting pipe is connected with an adjusting box, and an adjusting electromagnetic valve is arranged on the adjusting pipe;
a bypass pipeline is connected between the refrigerant pipeline at the first valve pipe and the refrigerant pipeline at the second valve pipe, and a bypass electromagnetic valve is arranged on the bypass pipeline;
an exhaust fan is arranged at the top of the side wall of the monitoring room and is connected with an electric control device;
the electric control device is a singlechip.
2. The charging pile monitoring room air conditioning system according to claim 1, wherein: the expansion liquid is mercury or ethanol.
3. The charging pile monitoring room air conditioning system according to claim 1, wherein: an upper positioning ring is arranged on the side wall of the inner cavity at the upper limit position of the valve core, and a lower positioning ring is arranged on the side wall of the inner cavity at the lower limit position of the valve core; the upper surface of the fixing seat surrounds the push rod and is provided with an upper sealing ring, and the lower surface of the fixing seat surrounds the expansion liquid connecting pipe and is provided with a lower sealing ring.
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