CN108036553B - Charging pile monitoring room air conditioning system operation method - Google Patents

Charging pile monitoring room air conditioning system operation method Download PDF

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Publication number
CN108036553B
CN108036553B CN201711107279.3A CN201711107279A CN108036553B CN 108036553 B CN108036553 B CN 108036553B CN 201711107279 A CN201711107279 A CN 201711107279A CN 108036553 B CN108036553 B CN 108036553B
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China
Prior art keywords
temperature
valve
refrigerant
interface
heat exchange
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CN201711107279.3A
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Chinese (zh)
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CN108036553A (en
Inventor
张世伟
葛风格
王春晓
张继辉
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西藏世峰高科能源技术有限公司
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    • F25B41/20
    • F25B41/37
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2700/00Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21Temperatures
    • F25B2700/2104Temperatures of an indoor room or compartment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an operation method of an air conditioning system of a charging pile monitoring room, which comprises a temperature control operation method and a humidity control operation method; the temperature control operation method comprises the following steps: when the initial temperature in the monitoring room is higher than 25 ℃, the monitoring room operates 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 compressor stops running; when the temperature in the monitoring room is less than 18 ℃, the monitoring room operates according to a second operation mode; the humidity control operation method comprises the following steps: when the relative humidity is lower than 45%, the operation is carried out according to a first operation mode; when the relative humidity is more than or equal to 45% and less than 70%, the operation of humidification or dehumidification is not carried out; at a relative humidity above 75%, the second operating mode is carried out. The temperature and humidity in the monitoring room can be kept in a constant interval all year round, the requirement of the charging pile monitoring room is met, the flow of the refrigerant is adjusted by utilizing the temperature change in the monitoring room, the system can keep a stable running state for a long time, and frequent starting and stopping of all parts are not needed.

Description

Charging pile monitoring room air conditioning system operation method

Technical Field

The invention relates to the technical field of new energy vehicles, in particular to an air conditioning system of a charging pile monitoring room.

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 new energy automobiles can relieve the energy supply and environmental protection pressure. Traditional automotive fuels are derived from petroleum, whereas petroleum traditional fossil fuels are non-renewable energy sources, in limited amounts. On one hand, the oil runs continuously at a high level, and the production and living costs of people are improved; on the other hand, as a large country for petroleum import, the dependence of petroleum on the outside exceeds the warning line, which is not beneficial to national safety. 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, wherein the harmful substances mainly comprise solid suspended particles, carbon monoxide, nitric oxide, sulfur dioxide and the like, and endanger the respiratory system and the cardiovascular system of human beings; meanwhile, the automobile exhaust contains a large amount of carbon dioxide, which can aggravate the current greenhouse effect. The electric automobile can effectively change the situation, and in practical use, the exhaust emission of the electric automobile is obviously lower than that of a traditional automobile: the exhaust emission of the hybrid electric vehicle can be reduced by 5-50% usually, and the pure electric vehicle can really realize zero emission and zero pollution.

For new energy automobiles, China gradually departs from national and provincial and local level subsidy policies since 2009. In 11 months 2009, the first domestic electric vehicle demonstration charging station, the Shanghai Cao xi electric vehicle charging station, was approved by experts in Shanghai. At the end of 12 months in 2009, the first two electric vehicle charging stations and 134 charging piles in Shenzhen constructed by power grid investment in south were put into use formally, and in 3 months in 2010, the first typically designed large electric vehicle charging station, the electric vehicle charging station in Tangshan south lake, of the national power grid system constructed by power grid investment in North China was also put into commercial operation formally. 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 pushers for the construction of the electric automobile charging stations, and electric automobile matching projects in China in recent years emerge like bamboo shoots in spring after rain.

The charging station can be functionally divided into four submodules: the system comprises a power distribution system, a charging system, a battery dispatching system and a charging station monitoring system. A complete charging station needs five parts of a power distribution room, a central monitoring room, a charging area, a battery replacement area, a battery maintenance room and the like.

The Charging pile has the English name of Charging Point, and the direct current Charging pile and the alternating current Charging pile are collectively called, and the function of the direct current Charging pile is similar to that of an oiling machine in a gas station. Every fills electric pile and all is equipped with charging plug, fills electric pile and can be according to the voltage class of difference, charges for the electric motor car of various models. The electric automobile charging pile adopts an alternating current and direct current power supply mode, a special charging card is needed to be used by swiping the card, and a display screen of the charging pile can display data such as charging quantity, cost, charging time and the like.

Charging stations generally charge vehicles in three ways. (1) The conventional charging mode is the so-called conventional charging mode or the slow charging mode, the charging mode is that the existing alternating current plug is plugged into a vehicle, 5 to 8 hours or 2 to 6 hours are needed, the charging mode is mostly an alternating current charging mode, a 220V or 380V alternating current power supply is provided for a vehicle-mounted charger of the electric vehicle from the outside, and the vehicle-mounted charger charges a power storage battery. Generally, a small-sized pure Electric Vehicle and a Plug Hybrid Electric Vehicle (PHEV) which can be externally connected and charged adopt the manner, and the charging manner is mainly completed by a charging pile.

(2) The charging mode is that the battery is charged by 50 to 80 percent in 20 to 30 minutes. The charging mode is mainly realized by a charger in a charging station, the direct current charging is realized, a ground charger directly outputs direct current electric energy to charge a vehicle-mounted power storage battery, and the electric vehicle only needs to provide a charging and related communication interface;

(3) the battery is directly replaced.

The charging station is generally built and is equipped with a plurality of electric pile that fill to satisfy the demand that a plurality of electric automobile charged simultaneously. The charging station comprises a plurality of charging piles, a power distribution system and other components, and equipment of each component needs to be monitored in a monitoring room in a centralized manner, and is found and processed in time when some equipment is abnormal in operation. Because the electrical equipment in the monitoring room is sensitive to the environmental temperature and humidity conditions, the temperature and humidity of the monitoring room need to be adjusted. As specified in the technical specification of the electric vehicle charging system in Shenzhen, the temperature of the monitoring room is preferably controlled within the range of 18 ℃ to 25 ℃, and the temperature change rate is not more than +/-5 ℃ per hour; the relative humidity is preferably controlled between 45% and 75%, in any case without condensation.

Disclosure of Invention

The invention aims to provide an air conditioning system of a charging pile monitoring room, which can control the temperature and the humidity in the monitoring room in a set interval, can keep the stable running state of the system by utilizing mechanical force and reduce the starting and stopping times of each part.

In order to achieve the purpose, the invention discloses an operation method of an air conditioning system of a charging pile monitoring room, the air conditioning system of the charging pile monitoring room comprises an electric control device, a refrigerating system and a humidity control system,

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; an air suction port of the compressor is connected with the first interface through a refrigerant pipeline, an air exhaust 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 the refrigerant pipeline, and the mechanical temperature control valve is connected with the indoor heat exchange coil through the 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 manner, 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 and sealing manner; the side walls of the top plate, the bottom plate, the connecting rod and the inner cavity are enclosed to form an annular cavity; a first valve hole is formed in the valve body on 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 on 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; a push rod is pressed downwards on the bottom plate, 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 extends 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 formed in the fixed seat, and the lower part of the push rod extends downwards into the vertical through hole and is in sliding sealing fit with the wall of the vertical through hole; an opening at the lower end 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 room;

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; when the valve core is positioned at the upper limit position, the second valve hole is isolated from the annular cavity, when the valve core is positioned at the lower limit position, the valve core is at the initial position, and when the valve core is positioned at the initial position, the second valve hole is completely communicated with the annular cavity; the valve core is provided with a balance position, the balance position of the valve core is positioned between the upper limit position and the 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 is partially communicated with the second valve hole; the height of the annular cavity is equal to that 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 the 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;

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;

the operation method 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 receives a temperature signal of the temperature sensor during initial operation;

when the initial temperature in the monitoring room is higher than 25 ℃, the electric control device controls the refrigerating 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 electric control device controls the compressor to be in a stop state; when the temperature in the monitoring room is less than 18 ℃, the electric control device controls the refrigerating system to operate according to a second operation mode;

the first mode of operation is: the electric control device controls the first interface and the third interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface and the fourth interface are communicated; the electric control device starts the compressor and closes the bypass electromagnetic valve, the high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the outdoor heat exchange coil pipe through the second interface, the fourth interface and the refrigerant pipeline, is condensed and releases heat in the outdoor heat exchange coil pipe, and dissipates the heat to the outdoor; after flowing out of the outdoor heat exchange coil, a high-temperature high-pressure liquid refrigerant enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, a low-temperature liquid refrigerant enters the second valve pipe of the mechanical temperature control valve through the refrigerant pipeline, then enters the indoor heat exchange coil through the refrigerant pipeline after passing through the first valve pipe, and the low-temperature liquid refrigerant evaporates and absorbs heat in the indoor heat exchange coil, so that the temperature in the monitoring room is reduced; when the temperature in the monitoring chamber is reduced to be lower than 18 ℃, the electric control device stops the compressor;

the second mode of operation is: the electric control device controls a first interface and a fourth interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface is communicated with a third interface;

the electric control device starts the compressor and closes the bypass electromagnetic valve, the high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the indoor heat exchange coil through the second interface, the third interface and the refrigerant pipeline, and is condensed and released in the indoor heat exchange coil, so that the temperature in the monitoring room is raised; after flowing out of the indoor heat exchange coil, a high-temperature and high-pressure liquid refrigerant enters the mechanical temperature control valve through the refrigerant pipeline through the first valve pipe, then flows out of the mechanical temperature control valve through the second valve pipe, then enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, a low-temperature liquid refrigerant enters the outdoor heat exchange coil through the refrigerant pipeline, and the low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchange coil and emits cold to the outside; when the temperature in the monitoring chamber rises to be higher than 25 ℃, the electric control device stops the compressor; after the compressor stops, 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 turns on the compressor again;

in the mechanical temperature control valve, downward top pressure of a spring and the self weight of the valve core form downward pressure on the valve core, and upward top pressure of expansion liquid forms upward pressure; in the second operation mode, the temperature in the monitoring room is more than or equal to 18 ℃ and less than or equal to 25 ℃ under the operation state of the compressor; at the moment, the valve core is positioned at the balance position, the upper pressure and the lower pressure reach a balance state, the upper part of the second valve hole is communicated with the annular cavity, and the lower part of the second valve hole is isolated from the annular cavity; when the temperature in the monitoring chamber is gradually increased between 18 ℃ and 25 ℃, the expansion liquid is gradually expanded, the push rod upwards pushes the bottom plate, so that the valve core and the annular cavity move upwards, the communication area between the annular cavity and the second valve hole is reduced, the resistance of the valve core to the refrigerant is increased, the flow of the refrigerant is reduced, and the heat emitted to the monitoring chamber by the indoor heat exchange coil is reduced; on the contrary, when the temperature in the monitoring chamber is gradually reduced between 18 ℃ and 25 ℃, the expansion liquid volume is gradually contracted, the push rod moves downwards under the action of gravity, and the valve core moves downwards along with the push rod under the action of the elastic force of the spring, so that the communication area between the annular cavity and the second valve hole 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 to 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 receives a signal of a temperature sensor, and when the relative humidity is lower than 45%, the operation is carried out according to a first operation mode; when the relative humidity is more than or equal to 45% and less than 70%, the electric control device only monitors the change condition of the relative humidity and does not perform the operations of humidification or dehumidification; when the relative humidity is higher than 75%, the operation is carried out according to a second operation mode;

the first mode of operation is: the electric control device opens the humidifier to humidify the monitoring room; closing the humidifier when the relative humidity in the monitoring chamber reaches 70%; after the humidifier is closed, the humidity in the monitoring chamber is gradually reduced, and when the relative humidity is lower than 45%, the steps are repeated, so that the relative humidity in the monitoring chamber is controlled to be 45% -70%;

the second mode of operation is: the electric control device starts the compressor to enable the first interface and the third interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface and the fourth interface of the two-position four-way electromagnetic valve are communicated; the high-temperature high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the outdoor heat exchange coil through the second interface, the fourth interface and the refrigerant pipeline, is condensed and releases heat in the outdoor heat exchange coil, and dissipates the heat to the outdoor; after flowing out of the outdoor heat exchange coil, the high-temperature and high-pressure liquid refrigerant enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, the low-temperature liquid refrigerant enters the indoor heat exchange coil through the refrigerant pipeline, and the low-temperature liquid refrigerant is evaporated and absorbs heat in the indoor heat exchange coil, so that the temperature in a monitoring room is reduced; monitoring the moisture in the indoor air to form condensed water after the indoor temperature is reduced to be lower than the dew point temperature; after the temperature in the monitoring chamber is kept below the dew point temperature for 15 +/-2 minutes, the second operation mode is ended, the relative humidity is reduced after the temperature in the monitoring chamber rises, and the electric control device starts to repeatedly perform the humidity control operation method from the initial state; and when the humidity control operation method is carried out, stopping carrying out the temperature control operation method.

In the initial state of the first operation mode and the second operation mode of the temperature control operation method, the regulating electromagnetic valve is in a closed state.

In a second operation mode of the wet control operation method, a bypass electromagnetic valve is opened, so that the mechanical temperature control valve loses the function of adjusting the flow of the refrigerant; and after the second operation mode is finished, closing the bypass electromagnetic valve.

Under 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 opening degree of the adjusting electromagnetic valve is increased by the electric control device, so that part of expansion liquid enters the adjusting box through the adjusting pipe, the push rod has a lower position than that before the opening degree of the adjusting electromagnetic valve is increased under the same temperature condition of the monitoring chamber, the valve core moves downwards along with the push rod under the action of the elastic force of the spring, the communication area of the annular cavity and the second valve hole 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 to the monitoring chamber is increased, the temperature in the monitoring chamber is increased, and the stable temperature in the monitoring chamber is increased until the upper pressure and the lower pressure reach new balance; if the new stable temperature in the monitoring chamber is still lower than 21 ℃, the electric control device continuously adjusts the opening degree of the electromagnetic valve; if the new stable temperature in the monitoring chamber reaches or exceeds 25 ℃, the electric control device reduces the opening degree of the regulating electromagnetic valve; and the electric control device increases or decreases the opening degree of the regulating electromagnetic valve according to the stable temperature in the monitoring room by the method until the new stable temperature in the monitoring room is less than 25 ℃ and more than or equal to 21 ℃, and at the moment, the electric control device keeps the opening degree of the regulating electromagnetic valve.

The expansion liquid is mercury or ethanol; the electric control device is a single chip microcomputer; the top of the side wall of the monitoring chamber is provided with an exhaust fan, and the exhaust fan is connected with an electric control device.

The temperature and humidity monitoring system is simple in structure and convenient to install and use, can keep the temperature and humidity in the monitoring room in a constant interval all year round, and meets the requirements of the charging pile monitoring room. In the past, the temperature of a refrigeration system needs to be controlled, the compressor and other parts need to be started and stopped frequently, and the compressor and other parts are started when the temperature is higher than or lower than a set temperature interval, so that the working conditions (pressure, temperature and other parameters) of all positions in the system can be changed frequently, and the service life of corresponding elements can be shortened when the compressor is started and stopped frequently. The setting of mechanical temperature control valve combines corresponding operation method, can utilize the temperature change in the control room to adjust the flow of refrigerant to when keeping control indoor temperature stable, make refrigerating system's cooling load (or heating load) keep invariable, just so make the system keep steady operation state for a long time, need not frequently to stop and stop each parts such as compressor. The stable operating conditions also extend the useful life of the components in the system.

The setting of regulating box and adjusting solenoid valve can adjust the volume of the inflation liquid that gets into the regulating box through the degree of opening of control adjusting solenoid valve, conveniently controls the height position of case under the same temperature condition, and then controls the area that second valve opening and ring chamber are linked together, thereby adjusts the refrigerant flow and adjusts the refrigerating output, finally reaches the purpose of adjusting the stable temperature value under the stable operating mode.

Through adjusting the solenoid valve, can stabilize the temperature in the control room more meticulously between 21 ℃ and 25 ℃, reduce the temperature fluctuation in the control room, need not frequently to start and stop the compressor, prolong the life of compressor. The temperature control mode is mainly mechanical temperature control, and the temperature control purpose can be automatically realized after the opening degree of the electromagnetic valve is regulated to be determined, so that the whole system can continuously run in a constant state without continuous intervention of an electric control device and continuous change of the working states of all parts, the system is more stable to run, and the service life of all equipment is prolonged.

Drawings

FIG. 1 is a schematic diagram of the refrigeration system of the present invention;

FIG. 2 is a schematic diagram of the electrical control principle of the present invention;

FIG. 3 is a schematic structural view showing the connection between the mechanical temperature control valve and the temperature sensing box when the valve core is at the upper limit position;

FIG. 4 is a schematic structural view showing the connection between the mechanical temperature control valve and the temperature sensing box when the valve core is at the lower limit position;

fig. 5 is a schematic structural view of the connection between the mechanical temperature control valve and the temperature sensing tank when the spool is located at the upper limit position and the lower limit position, i.e., the equilibrium position.

Detailed Description

As shown in fig. 1 to 5, the present invention provides an operation method of an air conditioning system in a charging pile monitoring room, wherein the air conditioning system in the charging pile monitoring room comprises an electric control device 1, a refrigeration 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; a suction port of the compressor 2 is connected with the first interface 9 through a refrigerant pipeline 13, an exhaust port of the compressor 2 is connected with the second interface 10 through a refrigerant pipeline 13, the third interface 11 is connected with the indoor heat exchange coil 4 through a refrigerant pipeline 13, and the fourth interface 12 is connected with the outdoor heat exchange coil 5 through a 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 connected with a valve core in a sliding manner, 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 respectively matched with the side wall of the inner cavity 16 in a sliding and sealing manner; 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 arranged in the valve body 15 at 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 21 is connected with a first valve pipe 22, a second valve hole 23 is arranged in the valve body 15 at 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; a push rod 26 is pressed on the bottom plate 18 downwards in a pressing mode, the diameter of the upper portion of the push rod 26 is larger than that of the lower portion, the upper portion of the push rod 26 penetrates through the valve body 15 and extends into the inner cavity 16 of the valve body 15, the upper portion 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 extends downwards into the vertical through hole 28 and is in sliding sealing fit with the wall of the vertical through hole 28; an expansion liquid connecting pipe 29 is connected to an opening at the lower end of the vertical through hole 28, the expansion liquid connecting pipe 29 is connected with a temperature sensing box 30, and expansion liquid 31 is contained in the temperature sensing box 30; 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; when the valve core is positioned at the upper limit position, the second valve hole 23 is isolated from the annular cavity 20, when the valve core is positioned at the lower limit position, the valve core is at the initial position, and when the valve core is positioned at the initial position, the second valve hole 23 is completely communicated with the annular cavity 20; 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 and the second valve hole 23 are in a partially communicated state; the height of the annular cavity 20 is equal to that 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 a 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 line 14 is connected between the refrigerant line 13 at the first valve pipe 22 and the refrigerant line 13 at the second valve pipe 24, and a bypass solenoid valve 7 is disposed on the bypass line 14.

An exhaust fan 42 is arranged on the top of the sidewall of the monitoring chamber, and the exhaust fan 42 is connected with the electric control device 1. The setting of the exhaust fan 42 can conveniently exhaust the indoor air, and the micro negative pressure state in the monitoring room can also make the outdoor fresh air enter the monitoring room, thereby increasing the fresh degree of the indoor air. The electric control device 1 is a single chip microcomputer. The expansion liquid 31 is mercury or ethanol. The mercury and the ethanol have larger expansion coefficients, and the volume of the mercury and the ethanol is changed greatly along with the change of temperature, so that the change of the production pressure enables the valve core to have relatively larger stroke.

An upper positioning ring 32 is arranged on the side wall of the inner cavity 16 at the upper limit position of the valve core, and a lower positioning ring 33 is arranged on the side wall of the inner cavity 16 at the lower limit position of the valve core. The upper and lower retaining rings 32, 33 can define upper and lower extreme positions of the valve spool. The upper surface of the fixed seat 27 is provided with an upper sealing ring 34 around the push rod 26, and the lower surface of the fixed seat 27 is provided with a lower sealing ring 35 around the expansion liquid connecting pipe 29, so that the sealing performance of the two positions is enhanced.

The operation method of the air conditioning system of the charging pile monitoring room 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 the temperature signal of the temperature sensor 41 during the initial operation;

when the initial temperature in the monitoring room is higher than 25 ℃ (the condition 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 ℃ (in this case, 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 ℃ (the case is mainly in winter), the electric control device 1 controls the refrigeration system to operate according to a 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, the high-temperature and 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, is condensed and released in the outdoor heat exchange coil 5, and dissipates heat to the outdoor; after flowing out of the outdoor heat exchange coil 5, the high-temperature and 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 refrigerant passes through the capillary tube 8, the low-temperature liquid refrigerant enters the second valve pipe 24 of the mechanical temperature control valve 6 through the refrigerant pipeline 13, then enters the indoor heat exchange coil 4 through the refrigerant pipeline 13 after passing through the first valve pipe 22, and the low-temperature liquid refrigerant is evaporated 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 meanwhile, 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, the high-temperature and 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 is condensed and released in the indoor heat exchange coil 4, so that the temperature in the monitoring room is raised; after flowing out of the indoor heat exchange coil 4, a high-temperature and 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, and the low-temperature liquid refrigerant is evaporated and absorbs heat in the outdoor heat exchange coil 5 to emit cold to the outside; when the temperature in the monitoring room rises above 25 ℃, the electric control device 1 stops the compressor 2; after the compressor 2 stops, 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, downward top pressure of the spring and the self weight of the valve core form downward pressure on the valve core, and upward top pressure of the expansion liquid 31 forms upward pressure; in the second operation mode, the temperature in the monitoring room is more than or equal to 18 ℃ and less than or equal to 25 ℃ under the operation state of the compressor 2; at the moment, the valve core is positioned at the balance position, the upper pressure and the lower pressure reach a 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, the push rod 26 upwards pushes the bottom plate 18, so that the valve core and the annular cavity 20 move upwards, the communication area of 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 of the refrigerant is reduced, and the heat emitted from the indoor heat exchange coil 4 to the monitoring chamber is reduced; on the contrary, 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 elasticity, 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 to 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 electronic control device 1 receives the signal of the temperature sensor 41, and when the relative humidity is lower than 45%, the operation is performed according to the first operation mode; when the relative humidity is more 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 the humidifying or dehumidifying operation; when the relative humidity is higher than 75%, the operation is carried out according to a second operation mode;

the first mode of operation is: the electric control device 1 opens the humidifier 39 to humidify the monitoring room; turning off the humidifier 39 when the relative humidity in the monitoring room reaches 70%; after the humidifier 39 is turned off, the humidity in the monitoring chamber is gradually reduced, and when the relative humidity is lower than 45%, the steps are repeated, so that the relative humidity in the monitoring chamber is controlled to be 45% -70%;

the second mode of operation is: the electric control device 1 starts the compressor 2, so that the first interface 9 of the two-position four-way electromagnetic valve 3 is communicated with the third interface 11, and meanwhile, the second interface 10 is communicated with the fourth interface 12; 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 connector 10, the fourth connector 12 and the refrigerant pipeline 13, is condensed and releases heat in the outdoor heat exchange coil 5, and dissipates the heat to the outdoor; 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 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 condensed water after the indoor temperature is reduced to be lower than the dew point temperature; after the temperature in the monitoring chamber is kept below the dew point temperature for 15 +/-2 minutes, the second operation mode is ended, the relative humidity is reduced after the temperature in the monitoring chamber rises, and the electric control device starts to repeatedly perform the humidity control operation method from the initial state; and when the humidity control operation method is carried out, stopping carrying out the temperature control operation method.

In the initial state of both the first operating mode and the second operating mode of the temperature-controlled operating method, the regulating solenoid valve 38 is closed.

In a second operation mode of the wet control operation method, the bypass electromagnetic valve 7 is opened, so that the mechanical temperature control valve 6 loses the function of adjusting the flow of the refrigerant; after the second operating mode is finished, the bypass solenoid valve 7 is closed.

Since the refrigerant flow is not required to be finely adjusted during dehumidification, the bypass electromagnetic valve 7 is opened, so that the mechanical temperature control valve 6 can be prevented from unnecessarily adjusting the flow, and energy is saved correspondingly.

In a second operation mode of the temperature control operation method, if the temperature in the monitoring chamber is stably maintained 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, further, under the same temperature condition of the monitoring chamber, the push rod 26 has a lower position than that before the opening degree of the regulating electromagnetic valve 38 is increased, under the action of the spring elasticity, 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, further, the heat emitted from the indoor heat exchange coil 4 to the monitoring chamber is increased, further, the temperature in the monitoring chamber is increased, and until the upper pressure and the lower pressure reach new balance, and the stable temperature in the monitoring chamber; if the new stable temperature in the monitoring chamber is still lower than 21 ℃, the electric control device 1 continues to adjust the opening degree of the electromagnetic valve 38; if the new stable temperature in the monitoring chamber reaches or exceeds 25 ℃, the electric control device 1 reduces the opening degree of the regulating electromagnetic valve 38; the electric control device 1 increases or decreases the opening degree of the regulating electromagnetic valve 38 according to the stable temperature in the monitoring room by the above method until the new stable temperature in the monitoring room is less than 25 ℃ and more than or equal to 21 ℃, and at this time, the electric control device 1 keeps the opening degree of the regulating electromagnetic valve 38.

By adjusting the electromagnetic valve 38, the temperature in the monitoring chamber can be stabilized between 21 ℃ and 25 ℃ more precisely, 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, and the temperature control purpose can be automatically realized after the opening degree of the electromagnetic valve 38 is determined, so that the whole system can continuously run in a constant state without continuous intervention of the electric control device 1 and continuous change of the working states of all parts, the system can run more stably, and the service life of all equipment is prolonged.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.

Claims (5)

1. Charging pile monitoring room air conditioning system operation method is characterized in that: the charging pile monitoring room air conditioning system comprises an electric control device, a refrigerating system and a humidity control system,
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; an air suction port of the compressor is connected with the first interface through a refrigerant pipeline, an air exhaust 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 the refrigerant pipeline, and the mechanical temperature control valve is connected with the indoor heat exchange coil through the 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 manner, 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 and sealing manner; the side walls of the top plate, the bottom plate, the connecting rod and the inner cavity are enclosed to form an annular cavity; a first valve hole is formed in the valve body on 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 on 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; a push rod is pressed downwards on the bottom plate, 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 extends 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 formed in the fixed seat, and the lower part of the push rod extends downwards into the vertical through hole and is in sliding sealing fit with the wall of the vertical through hole; an opening at the lower end 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 room;
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; when the valve core is positioned at the upper limit position, the second valve hole is isolated from the annular cavity, when the valve core is positioned at the lower limit position, the valve core is at the initial position, and when the valve core is positioned at the initial position, the second valve hole is completely communicated with the annular cavity; the valve core is provided with a balance position, the balance position of the valve core is positioned between the upper limit position and the 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 is partially communicated with the second valve hole; the height of the annular cavity is equal to that 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 the 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;
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;
the operation method 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 receives a temperature signal of the temperature sensor during initial operation;
when the initial temperature in the monitoring room is higher than 25 ℃, the electric control device controls the refrigerating 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 electric control device controls the compressor to be in a stop state; when the temperature in the monitoring room is less than 18 ℃, the electric control device controls the refrigerating system to operate according to a second operation mode;
the first mode of operation is: the electric control device controls the first interface and the third interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface and the fourth interface are communicated; the electric control device starts the compressor and closes the bypass electromagnetic valve, the high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the outdoor heat exchange coil pipe through the second interface, the fourth interface and the refrigerant pipeline, is condensed and releases heat in the outdoor heat exchange coil pipe, and dissipates the heat to the outdoor; after flowing out of the outdoor heat exchange coil, a high-temperature high-pressure liquid refrigerant enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, a low-temperature liquid refrigerant enters the second valve pipe of the mechanical temperature control valve through the refrigerant pipeline, then enters the indoor heat exchange coil through the refrigerant pipeline after passing through the first valve pipe, and the low-temperature liquid refrigerant evaporates and absorbs heat in the indoor heat exchange coil, so that the temperature in the monitoring room is reduced; when the temperature in the monitoring chamber is reduced to be lower than 18 ℃, the electric control device stops the compressor;
the second mode of operation is: the electric control device controls a first interface and a fourth interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface is communicated with a third interface;
the electric control device starts the compressor and closes the bypass electromagnetic valve, the high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the indoor heat exchange coil through the second interface, the third interface and the refrigerant pipeline, and is condensed and released in the indoor heat exchange coil, so that the temperature in the monitoring room is raised; after flowing out of the indoor heat exchange coil, a high-temperature and high-pressure liquid refrigerant enters the mechanical temperature control valve through the refrigerant pipeline through the first valve pipe, then flows out of the mechanical temperature control valve through the second valve pipe, then enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, a low-temperature liquid refrigerant enters the outdoor heat exchange coil through the refrigerant pipeline, and the low-temperature liquid refrigerant evaporates and absorbs heat in the outdoor heat exchange coil and emits cold to the outside; when the temperature in the monitoring chamber rises to be higher than 25 ℃, the electric control device stops the compressor; after the compressor stops, 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 turns on the compressor again;
in the mechanical temperature control valve, downward top pressure of a spring and the self weight of the valve core form downward pressure on the valve core, and upward top pressure of expansion liquid forms upward pressure; in the second operation mode, the temperature in the monitoring room is more than or equal to 18 ℃ and less than or equal to 25 ℃ under the operation state of the compressor; at the moment, the valve core is positioned at the balance position, the upper pressure and the lower pressure reach a balance state, the upper part of the second valve hole is communicated with the annular cavity, and the lower part of the second valve hole is isolated from the annular cavity; when the temperature in the monitoring chamber is gradually increased between 18 ℃ and 25 ℃, the expansion liquid is gradually expanded, the push rod upwards pushes the bottom plate, so that the valve core and the annular cavity move upwards, the communication area between the annular cavity and the second valve hole is reduced, the resistance of the valve core to the refrigerant is increased, the flow of the refrigerant is reduced, and the heat emitted to the monitoring chamber by the indoor heat exchange coil is reduced; on the contrary, when the temperature in the monitoring chamber is gradually reduced between 18 ℃ and 25 ℃, the expansion liquid volume is gradually contracted, the push rod moves downwards under the action of gravity, and the valve core moves downwards along with the push rod under the action of the elastic force of the spring, so that the communication area between the annular cavity and the second valve hole 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 to 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 receives a signal of a temperature sensor, and when the relative humidity is lower than 45%, the operation is carried out according to a first operation mode; when the relative humidity is more than or equal to 45% and less than 70%, the electric control device only monitors the change condition of the relative humidity and does not perform the operations of humidification or dehumidification; when the relative humidity is higher than 75%, the operation is carried out according to a second operation mode;
the first mode of operation is: the electric control device opens the humidifier to humidify the monitoring room; closing the humidifier when the relative humidity in the monitoring chamber reaches 70%; after the humidifier is closed, the humidity in the monitoring chamber is gradually reduced, and when the relative humidity is lower than 45%, the steps are repeated, so that the relative humidity in the monitoring chamber is controlled to be 45% -70%;
the second mode of operation is: the electric control device starts the compressor to enable the first interface and the third interface of the two-position four-way electromagnetic valve to be communicated, and meanwhile, the second interface and the fourth interface of the two-position four-way electromagnetic valve are communicated; the high-temperature high-pressure gaseous refrigerant flows out from the exhaust port of the compressor, enters the outdoor heat exchange coil through the second interface, the fourth interface and the refrigerant pipeline, is condensed and releases heat in the outdoor heat exchange coil, and dissipates the heat to the outdoor; after flowing out of the outdoor heat exchange coil, the high-temperature and high-pressure liquid refrigerant enters the capillary tube through the refrigerant pipeline, the pressure and the temperature of the refrigerant are reduced when the refrigerant passes through the capillary tube, the low-temperature liquid refrigerant enters the indoor heat exchange coil through the refrigerant pipeline, and the low-temperature liquid refrigerant is evaporated and absorbs heat in the indoor heat exchange coil, so that the temperature in a monitoring room is reduced; monitoring the moisture in the indoor air to form condensed water after the indoor temperature is reduced to be lower than the dew point temperature; after the temperature in the monitoring chamber is kept below the dew point temperature for 15 +/-2 minutes, the second operation mode is ended, the relative humidity is reduced after the temperature in the monitoring chamber rises, and the electric control device starts to repeatedly perform the humidity control operation method from the initial state; and when the humidity control operation method is carried out, stopping carrying out the temperature control operation method.
2. The operation method of the charging pile monitoring room air conditioning system according to claim 1, characterized in that: in the initial state of the first operation mode and the second operation mode of the temperature control operation method, the regulating electromagnetic valve is in a closed state.
3. The operation method of the charging pile monitoring room air conditioning system according to claim 1, characterized in that:
in a second operation mode of the wet control operation method, a bypass electromagnetic valve is opened, so that the mechanical temperature control valve loses the function of adjusting the flow of the refrigerant; and after the second operation mode is finished, closing the bypass electromagnetic valve.
4. The operation method of the charging pile monitoring room air conditioning system according to claim 2, characterized in that: under 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 opening degree of the adjusting electromagnetic valve is increased by the electric control device, so that part of expansion liquid enters the adjusting box through the adjusting pipe, the push rod has a lower position than that before the opening degree of the adjusting electromagnetic valve is increased under the same temperature condition of the monitoring chamber, the valve core moves downwards along with the push rod under the action of the elastic force of the spring, the communication area of the annular cavity and the second valve hole 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 to the monitoring chamber is increased, the temperature in the monitoring chamber is increased, and the stable temperature in the monitoring chamber is increased until the upper pressure and the lower pressure reach new balance; if the new stable temperature in the monitoring chamber is still lower than 21 ℃, the electric control device continuously adjusts the opening degree of the electromagnetic valve; if the new stable temperature in the monitoring chamber reaches or exceeds 25 ℃, the electric control device reduces the opening degree of the regulating electromagnetic valve; and the electric control device increases or decreases the opening degree of the regulating electromagnetic valve according to the stable temperature in the monitoring room by the method until the new stable temperature in the monitoring room is less than 25 ℃ and more than or equal to 21 ℃, and at the moment, the electric control device keeps the opening degree of the regulating electromagnetic valve.
5. The operation method of the charging pile monitoring room air conditioning system according to claim 2, characterized in that: the expansion liquid is mercury or ethanol; the electric control device is a single chip microcomputer; the top of the side wall of the monitoring chamber is provided with an exhaust fan, and the exhaust fan is connected with an electric control device.
CN201711107279.3A 2017-11-10 2017-11-10 Charging pile monitoring room air conditioning system operation method CN108036553B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101504222A (en) * 2009-02-19 2009-08-12 艾默生网络能源有限公司 Air conditioner
CN101581485A (en) * 2009-06-19 2009-11-18 泰豪科技股份有限公司 Temperature-regulation dehumidifier with overall working conditions
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