1199 results about "Cold medium" patented technology

The utility model provides a purification treatment device, and relates to the technical field of process water treatment. The purification treatment device comprises: a first cation exchange resin tank for adsorbing and extracting at least a part of oligomers and cations in water; a water inlet of a heating medium channel of the first heat exchanger is connected with a water outlet of the first cation exchange resin tank, and the first heat exchanger is used for cooling the entered extraction water; a water inlet of a heating medium channel of the second heat exchanger is connected with a water outlet of a heating medium channel of the first heat exchanger so as to cool the extraction water, so that the temperature of the extraction water flowing out of the heating medium channel of the second heat exchanger is lower than or equal to a first threshold value; the anion exchange resin tank is connected with a water outlet of the heating medium channel of the second heat exchanger; the second cation exchange resin tank is connected with the water outlet of the anion exchange resin tank; and the water outlet of the second cation exchange resin tank is connected with the water inlet of the refrigerant channel of the first heat exchanger. According to the invention, impurities in the extracted water can be removed.

The invention relates to the technical field of new energy automobile thermal management, and belongs to an R290 super integrated finished automobile thermal management system for a new energy automobile, the R290 thermal management system is adopted, the R290 thermal management system has excellent thermal characteristics and high low-temperature heating capacity, attenuation of low-temperature endurance mileage is reduced, energy consumption is reduced, and cost is reduced; according to the invention, the refrigerant loop is optimized, so that the filling amount of the refrigerant is minimized, and the system safety is ensured; furthermore, a heat regenerator is additionally arranged behind the system water-water heat exchanger, the supercooling section of the system can be guaranteed, the air suction superheat degree of the compressor is guaranteed, the system performance is optimized, and the service life of the compressor is prolonged. Waterways are integrated through the nine-way valve, the pipeline length used by the waterways is reduced, the use space of a cabin is increased, the pipeline cost of the waterways is saved, the low-temperature radiators are arranged in series, the situation that the heat dissipation capacity of one of the low-temperature radiators is affected due to conventional front-back arrangement is avoided, and the thermal management performance of the whole vehicle is optimized.

The invention discloses a refrigerant direct supply type frame type radiator, and belongs to the technical field of heating and ventilation equipment. The heat exchanger comprises a shell, an air inlet pipe, a liquid outlet pipe, heat exchange pipes, a middle fin set and a fixed frame module. A containing cavity is formed in the shell, the shell comprises two main panels, and main panel pipelines are distributed on the inner sides of the main panels; the air inlet pipe and the liquid outlet pipe are connected with the refrigerant input flow dividing valve body and the refrigerant output flow collecting valve body correspondingly, the heat exchange pipe and the middle fin set are fixed in a matched mode, and the fixing frame module is used for positioning the middle fin set. And a refrigerant is shunted to the main panel pipeline and the heat exchange pipe through the air inlet pipe and the refrigerant input shunting valve body, is converged and output through the refrigerant output converging valve body after releasing heat, and is output outwards through the liquid outlet pipe. The system has the advantages that refrigerant direct supply one-time heat exchange is achieved, energy is saved, consumption is reduced, heating is rapid, maintenance is avoided, the weight is low, the system meets the multi-scene heating requirement, and the system has remarkable popularization significance.

The application discloses an air conditioner and a control method of the air conditioner. The air conditioner comprises: a heat exchange flow path for realizing heat exchange between a domestic water tank and a refrigerant circulation flow path; a control valve group arranged on the refrigerant circulation flow path and used for conducting or cutting off the refrigerant circulation flow path; and a controller connected with the control valve group and a four-way valve. The controller is configured to: acquire a target operation mode of the air conditioner, wherein the target operation mode at least comprises a heating mode, a cooling mode and a cooperative mode in which the heating mode, the cooling mode and a hot water mode are combined; determine that the target operation mode of the air conditioner is the cooperative mode; and control the opening and closing states of the control valve group and the four-way valve according to the cooperative mode, so as to control the operation of the heat exchanger group and adjust the water tank temperature of the domestic water tank. The air conditioner can meet the cooling, heating and hot water demands of users at the same time, and the waste heat generated during the refrigeration or heating is fully utilized to prepare hot water, thereby avoiding energy waste of the air conditioner during the operation.

The invention discloses an integrally-welded three-medium heat exchanger which comprises a heat exchange core, collecting pipes, flat pipes and fins are arranged on the heat exchange core, the flat pipes are longitudinally arranged, the fins are arranged on at least one side of each flat pipe, and all the fins are tightly attached to the flat pipes; the collecting pipe is provided with a connecting pipe or a filler flange which is communicated with an external medium inlet / outlet; a plate bundle unit is arranged on the outer side of the heat exchange core, and the plate bundle unit is formed by sequentially overlapping a plurality of heat exchange plates and fins and sealing the heat exchange plates and the fins through all-welding of the peripheral edges; a first flow channel and a second flow channel are formed in the plate bundle unit, and the first flow channel and the second flow channel are not completely isolated from each other. According to the integrally-welded three-medium heat exchanger, the influence on the refrigerant side in a whole vehicle integrated system can be reduced, and the leakage risk is greatly reduced; meanwhile, the structure is compact, sealing performance is excellent, and heat efficiency is high.

The utility model discloses a helium dehydrogenation and purification device taking air as regenerated gas. The helium dehydrogenation and purification device comprises a catalytic dehydrogenation reactor, a first adsorption reactor and a second adsorption reactor, a refrigerant of the heat exchanger is connected with a feed gas source and a compressed air source, a refrigerant outlet of the heat exchanger is connected with an inlet of the catalytic dehydrogenation reactor, an outlet of the catalytic dehydrogenation reactor is connected with a heating medium inlet of the heat exchanger, and a heating medium outlet of the heat exchanger is connected with an inlet of the steam-water separator; inlets of the first adsorption reactor and the second adsorption reactor are connected with an outlet of the steam-water separator and a regenerated waste gas outlet; outlets of the first adsorption reactor and the second adsorption reactor are connected with a product gas outlet and a compressed air source; a hydrogen analyzer and a flow meter are arranged on a pipeline for connecting a refrigerant inlet of the heat exchanger with the feed gas source, and a flow controller and a flow control valve are arranged on a pipeline for connecting the refrigerant inlet of the heat exchanger with the compressed air source; the flow controller is electrically connected with the hydrogen analyzer and the flow meter and can control the opening degree of the flow control valve. The problem that hydrogen-containing gas cannot be provided as regeneration gas in most helium catalytic dehydrogenation purification scenes is solved.

The invention relates to the technical field of energy storage, heat dissipation and temperature control, and discloses a cooling capacity storage and battery heat dissipation linkage regulation and control system and method.The method comprises the steps that an energy storage plug-in box is charged in the off-peak electricity period, a refrigerant is cooled, and the temperature of the refrigerant is reduced to a preset low-temperature threshold interval; when the peak electricity time period starts, the energy storage plug-in box is controlled to start discharging, and the energy storage plug-in box is cooled through a refrigerant; the discharge capacity and the refrigerant temperature of the energy storage plug-in box are continuously monitored, and a state detection window is arranged; calculating a cooling capacity state index of the refrigerant based on the discharge capacity in the state detection window and the temperature of the refrigerant; setting discharge modes of the energy storage plug-in box based on the cold quantity state index, wherein the discharge modes comprise a continuous discharge mode and a limited discharge mode; and a discharge mode based on the energy storage subrack. Through linkage regulation and control of discharging and heat dissipation, safe, stable and efficient operation of the energy storage system is realized.

The invention relates to the technical field of power regulation, in particular to a refrigeration control strategy optimization method based on cooling capacity storage and electricity price change, which comprises the following steps of: generating an energy efficiency parameter correction result by collecting a cooling capacity and refrigerant temperature difference, calculating a cooling capacity demand and a cooling capacity difference value and combining real-time electricity price and energy efficiency parameter normalization; the method comprises the steps of calculating a difference value between a cooling capacity demand and a refrigerating capacity, analyzing a power correction coefficient and an electricity price section, setting a cold storage instruction and a cold release instruction, adjusting a cold storage or cold release strategy in combination with an electricity price trend, generating an electricity price response control strategy set, and optimizing cold storage power adjustment, and comprises the steps of calculating a difference value between the cooling capacity demand and the refrigerating capacity, combining real-time electricity price and energy efficiency parameter normalization and fitting an energy efficiency parameter correction result; based on electricity price segmentation analysis, a proper cold storage or cold release instruction is set, the energy efficiency of equipment in a peak-valley electricity price interval is improved, the electricity price trend is analyzed to adjust a cold storage or cold release strategy, energy consumption waste is avoided, finally, the electric energy utilization efficiency is improved, the cost is reduced, and the flexibility and adaptability of a refrigeration trolley are enhanced.

The invention relates to the technical field of compressors, in particular to a compressor, an integrated heat management system comprising the compressor and a vehicle comprising the integrated heat management system.The compressor comprises a shell with the hollow interior, and the shell comprises a shell upper portion used for containing a motor and a shell lower portion used for containing a pump body; a refrigerant compressed by the pump body is discharged from the upper portion of the shell, a cooling flow channel independent of the inner space of the shell is arranged on the upper portion of the shell, the cooling flow channel is provided with a flow channel inlet allowing cooling water to flow in and a flow channel outlet allowing the cooling water to flow out, and the cooling water flows through the cooling flow channel and absorbs heat in the shell. In the integrated heat management system, a cooling flow channel is connected into an environment end water circulation loop and located on the upstream of an outdoor side heat exchanger. Cooling of the exhaust side motor and the pump body can be achieved.

According to the air source heat pump two-stage heating system, an air source heat pump unit compresses a low-temperature and low-pressure refrigerant into high-temperature and high-pressure gas through a compressor, and heat is transferred to outdoor air / circulating water through a water side / air side heat exchanger. The first-stage heating system is connected with the air energy collecting device and used for primarily increasing the water temperature; the second-stage heating system is connected with the first-stage heating system and is used for further raising the water temperature to the required supply temperature; according to the system, through a series-parallel connection two-stage heating mechanism of air energy, the system flow is effectively reduced, matching with an existing heating system with a small pipe diameter becomes possible, the temperature of supplied water and returned water is remarkably increased, and therefore the good tail end heating effect is ensured.

The present application relates to a kind of air conditioner heat exchange module, air conditioner indoor unit and clean air conditioning system, air conditioner heat exchange module includes multiple heat exchange units, multiple heat exchange units are stacked together from top to bottom, each the heat exchange unit includes heat exchanger, the heat exchanger is connected with outdoor heat exchanger by refrigerant connection pipe.Air conditioner indoor unit includes shell, back air chamber, heat exchange chamber and air supply chamber are separated in shell, back air opening is set on the shell of back air chamber, air supply opening is set on the shell of air supply chamber, heat exchange module is installed in the heat exchange chamber, the air inlet and air outlet of each heat exchange unit in the heat exchange module are communicated with back air chamber and air supply chamber respectively.The present application is conducive to fine adjustment to indoor temperature, reduce energy consumption, and overall structure is more compact, integrated degree is high.

The invention provides refrigerant circulating equipment, a control method and device thereof and a storage medium, and relates to the technical field of refrigeration. The control method of the refrigerant circulation equipment comprises the steps that in the process that a first load system refrigerates a first temperature zone, the time when multiple temperature zones of the refrigerant circulation equipment reach a starting point is determined; under the condition that it is determined that the third temperature zone can reach the starting point before the second temperature zone reaches the starting point, the first load system is controlled to operate in a frequency increasing mode within a preset range, the first temperature zone is the temperature zone reaching the starting point in the temperature zones associated with the first load system, and the second temperature zone is the temperature zone reaching the starting point in the temperature zones associated with the first load system; the third temperature zone is the temperature zone associated with the second load system in the temperature zone which does not reach the starting point during the refrigeration period of the first temperature zone.

The application discloses an integrated device of an automobile thermal management system and belongs to the technical field of vehicles. The integrated device of the automobile thermal management system comprises a refrigerant power unit, a cooling liquid and refrigerant heat exchange unit internally provided with a cooling liquid heat exchange flow channel and a refrigerant heat exchange flow channel, a valve integrated unit internally provided with a refrigerant flow channel, the valve integrated unit being arranged on the refrigerant power unit, and the refrigerant power unit being communicated with the refrigerant heat exchange flow channel of the cooling liquid and refrigerant heat exchange unit through the refrigerant flow channel; and a metal support, the refrigerant power unit and the cooling liquid and refrigerant heat exchange unit with the valve integrated unit mounted thereon being all mounted on the metal support, and the metal support being capable of being connected with a whole vehicle. The refrigerant rubber tube is removed, the structure is more compact, the volume is small, the product is more stable and safe, and the integration is higher.

The invention discloses a photovoltaic energy storage and heat storage air energy hot water system without an external power supply, relates to the technical field of photovoltaic energy storage heat pump water heaters, and aims to charge an energy storage system when sunlight is sufficient, and directly provide electric power to operate a heat pump water heater system for heating when the energy storage system is nearly full. According to the heat pump system, through the reverse Carnot principle, heat in air is converted into a hot water tank by means of phase-change heat exchange of a refrigerating refrigerant, a full-free high-energy-efficiency hot water scheme is achieved, heating schemes such as an instant heating mode and an intelligent mode can be provided, the heat pump system adapts to various sunshine weather situations, maximum energy utilization is achieved, and the energy utilization rate is increased. And the domestic hot water requirement of outdoor operators is met.

The invention discloses a simulated ultralow temperature environment experiment system, and belongs to the technical field of environment simulation and low temperature experiments, the simulated ultralow temperature environment experiment system comprises an environment simulation tank body, a heat exchange unit and a liquid nitrogen supply unit, the interior of the environment simulation tank body is an experiment space needing refrigeration, and the heat exchange unit is located in the environment simulation tank body; the liquid nitrogen supply unit is used for providing liquid nitrogen, and the output end of the liquid nitrogen supply unit is used for communicating with a refrigerant inlet of the heat exchange unit. The experiment system runs only by depending on a single cold source of liquid nitrogen, the running energy consumption is remarkably reduced, the size and shape of the environment simulation tank body can be flexibly designed and selected according to experiment requirements, the application scene is greatly expanded, the cold source is continuously supplied to the heat exchange unit arranged in the environment simulation tank body through the liquid nitrogen supply unit, and the experiment efficiency is improved. A stable and uniform ultralow-temperature gas phase environment can be created and maintained in the tank body, and a reliable guarantee is provided for an experiment.

The application provides a refrigerant leakage detection method and device of an air conditioner, a storage medium and the air conditioner. The method comprises the following steps: when the air conditioner is in standby, detecting whether the indoor unit heat exchanger pipe temperature of the air conditioner is within a preset range; the preset range is a temperature fluctuation range centered on a current ambient temperature value; if it is detected that the indoor unit heat exchanger pipe temperature is not within the preset range, judging whether the air conditioner has refrigerant leakage according to the system internal pressure change of the air conditioner. The scheme provided by the application can accurately judge whether the refrigerant has leakage.

The invention relates to the technical field of neon isotope separation, and discloses a neon isotope separation system and method.The neon isotope separation system comprises a neon gas tank, a supercharger, a first-stage heat exchanger, a second-stage heat exchanger, a mixing refrigerator and a multi-stage rectifying tower, and cold neon discharged from the top of the rectifying tower except the first-stage rectifying tower is subjected to heat exchange through the second-stage heat exchanger and the first-stage heat exchanger and then flows back to the supercharger, and the cold neon is effectively used as a refrigerant to cool neon. And then part of neon cooled by the first-stage heat exchanger is shunted into the reboiler of the multi-stage rectifying tower, the temperature of the neon in the rectifying tower is adjusted, separation of 20Ne and 22Ne is promoted, neon branches in the reboiler converge with neon branches cooled by the second-stage heat exchanger, heat in neon at different stages can be fully utilized, and energy consumption is reduced. The neon cooled by the first-stage heat exchanger is used for heat exchange and temperature adjustment of the neon in the rectifying tower, the temperature difference between the neon and the neon is not too large, the temperature of the neon in the rectifying tower can be effectively and finely adjusted, and then separation of isotopes 20Ne and 22Ne at the low temperature is promoted.

An integrated air conditioner with high refrigeration power comprises a shell and a refrigeration assembly. An air inlet and an air outlet are formed in the shell; the refrigeration assembly is arranged in the shell and at least comprises a compressor, a heat exchanger and an evaporator; the refrigeration assembly further comprises a refrigerant pipeline and a liquid pipeline. The heat exchanger is composed of a plurality of heat exchange pipes, and each heat exchange pipe internally comprises a refrigerant channel and a liquid channel. The refrigerant channel in each heat exchange pipe is communicated with the interior of the refrigerant pipeline; the liquid channel in each heat exchange pipe is communicated with the interior of the liquid pipeline; the heat exchange tubes comprise a starting heat exchange tube, a tail heat exchange tube and a middle heat exchange tube; liquid enters the heat exchange tubes to absorb heat of a refrigerant so as to cool the refrigerant, the heat exchange efficiency of the heat exchanger can be effectively improved, the heat exchanger further comprises the starting heat exchange tube, the tail heat exchange tube, the middle heat exchange tubes and other heat exchange tubes, the heat exchange efficiency of the heat exchange tubes is further improved, and the heat exchange efficiency of the heat exchanger is improved. Therefore, the refrigeration efficiency of the air conditioner is effectively improved by adapting the power of the compressor.

This invention provides an integrated device and method for gas ultrapurification, comprising: an integrated sealed cavity; an adsorption system disposed inside the integrated sealed cavity, the adsorption system being filled with at least one adsorbent; a temperature control system disposed inside the integrated sealed cavity, including independent refrigerant circulation loops and hot medium circulation loops, for temperature control of the adsorption system; and a gas pipeline system including a raw material inlet, a displacement gas inlet, a product gas outlet, and a desorption gas outlet, each interface being connected to the integrated sealed cavity; the temperature control system controls the temperature of the adsorption system, enabling the sequential execution of a series of processes within the integrated gas ultrapurification device under the condition of an inert gas flow: preheating and activation of the adsorbent, low-temperature adsorption purification of the gas, high-temperature desorption regeneration, and cooling of the adsorbent for later use. The method of this invention is simple, easy to operate, and has broad industrial application prospects.

The utility model discloses a high-temperature steam recycling device which comprises a direct heat exchange steam pipeline, an indirect heat exchange steam pipeline, a heat exchange condenser a and a cold medium pipeline, the direct heat exchange steam pipeline is communicated with a fine filter box, and a microporous membrane is arranged in the fine filter box. Steam output by the fine filter box is communicated with the mixing tank through an output pipeline and an indirect heat exchange steam pipeline, and the mixing tank is communicated with the heat exchange condenser a through a condensation pipeline. According to the high-temperature steam recycling device, alumina particles with the particle diameter larger than that of water vapor drop particles or aluminum hydroxide suspended solids which are not completely decomposed in steam are filtered and separated in a microporous filtering mode, the temperature of the alumina particles or the aluminum hydroxide suspended solids is increased in a compression mode, and the alumina particles or the aluminum hydroxide suspended solids are recycled through heat exchange and then enter the next condenser to be released, so that the temperature of the alumina particles or the aluminum hydroxide suspended solids is reduced; therefore, heat energy can be recycled, meanwhile, the recycling efficiency of condensate water can be improved, and waste of water resources and heat energy is avoided.

The utility model discloses an integrated heat exchanger suitable for frozen drying machine, including the casing, the casing is equipped with the outlet of drying gas, the inlet of water gas, the coolant outlet and the coolant inlet from top to bottom, the upper portion is equipped with the heat exchanger in the casing, still be equipped with the evaporimeter in the casing, still be equipped with the gas liquid separation chamber of gas in the bottom of casing, the evaporimeter is located heat exchanger below and communicates with the heat medium outlet of heat exchanger, the backflow channel of gas is established between evaporimeter and heat exchanger and the inside of casing, and the gas outlet of evaporimeter and the cold medium inlet of heat exchanger communicate with backflow channel. The utility model divides and sets up the upper and lower end in the casing with heat exchange and evaporation function, can simplify the structure setting in the casing, and the production cost is simplified, after setting evaporimeter below heat exchanger, can realize the step -by -step cooling of airflow from top to bottom, is favorable to the gathering of condensate in the bottom of casing and gas -water separation in the cooling process, thereby guaranteeing the drying effect of gas.

The invention belongs to the technical field of electrolyte temperature management, and discloses an electrolyte temperature maintaining system and method, and the system comprises electrochemical equipment, a heat exchange system, an electric auxiliary heating system and a control system. The electrochemical equipment system is a main circulation loop and comprises an electrolyte storage tank and the like, a circulation pump drives electrolyte to flow, and the electrolyte flows through the dividing wall type heat exchanger after being reacted by the electrochemical equipment; the heat exchange system is a secondary loop, and a compressor and other assemblies enable a refrigerant to circulate and exchange heat with electrolyte; the electric auxiliary heating system uses a self-temperature-limiting type heat tracing belt for heat tracing and heat preservation of the electrolyte; the control system receives a temperature sensor signal and controls the heat exchange and electric auxiliary heating system to start and stop after comparing the temperature sensor signal with a preset range. According to the method, after an electrochemical equipment system is started, a temperature sensor collects signals and a control system compares, a heat exchange system is started when the temperature exceeds the upper limit, and an electric auxiliary heating system is started when the temperature is lower than the lower limit, so that the electrolyte temperature is kept within the optimal range, and stable operation of electrochemical equipment is guaranteed.

The invention discloses an air conditioner outdoor unit, a refrigerant filling method and device and a storage medium. The air conditioner outdoor unit comprises a compressor, a one-way valve, a heat exchanger and a first stop valve, an output port of the compressor is connected with the heat exchanger through the one-way valve, an input port of the compressor is connected with the first stop valve, and a pipeline between the one-way valve and the heat exchanger is a first pipeline. The pipeline between the compressor and the first stop valve is a second pipeline, and refrigerants are arranged in the first pipeline, the second pipeline and the compressor. Under the condition of the same refrigerant injection amount, the air conditioner outdoor unit can store refrigerants in the first pipeline, the second pipeline and the compressor separately, so that in the process of transporting the air conditioner outdoor unit, the pressure generated when the refrigerants in the air conditioner outdoor unit are subjected to high temperature is lower than the pressure bearing capacity of the refrigerant pipeline; and pipe explosion can be reduced to a certain extent, and damage to the outdoor unit of the air conditioner is avoided.

A combined air-conditioning unit and a control method, relating to the technical field of computer room air conditioners. The combined air-conditioning unit comprises an outdoor heat exchange system and an indoor heat exchange system. The outdoor heat exchange system comprises a main circuit, a first condenser, and a pressure pump, wherein a plurality of branches corresponding to the indoor heat exchange system are provided on the main circuit. The indoor heat exchange system comprises a compressor, a second condenser, a throttling element, and a second evaporator. One indoor heat exchange system at least corresponds to two branches, one of the branches is provided with a first electric control valve and a first evaporator which are connected in series, and the other of the branches is provided with a second electric control valve and exchanges heat with the second condenser to remove heat from a refrigerant in the indoor heat exchange system. The first evaporator and the second evaporator both are arranged indoors, at least one of the first and second evaporators provides cooling capacity for the indoor space, and the first and second evaporators are arranged in series in an airflow direction. The present application can operate in different cooling modes on the basis of different outdoor operating conditions, thereby utilizing outdoor natural cold sources to the maximum extent.

This utility model provides a heat storage heat exchanger and a refrigerated water purifier, belonging to the technical field of heat exchange equipment. The utility model includes a heat storage tank and a heat storage circulation pump. The heat storage tank has an annular inner cavity, within which a refrigerant coil and a drinking liquid coil are arranged in an inner-outer sleeve configuration. Spiral fins are arranged along the wall of the refrigerant coil, forming spiral-shaped flow guide gaps. The drinking liquid coil is arranged along these spiral-shaped flow guide gaps. The inlet of the heat storage circulation pump connects to one side of the annular inner cavity, and the outlet of the heat storage circulation pump connects to the other side of the annular inner cavity. This heat storage heat exchanger and refrigerated water purifier, through dynamic circulation of the heat storage medium, enhanced heat exchange via spiral fins, and modular integrated design, achieves the core objectives of "high efficiency, energy saving, constant temperature, and easy maintenance" for commercial refrigerated water purifiers, effectively solving the defects of traditional equipment such as low cooling efficiency, uneven temperature, high energy consumption, and inconvenient maintenance.

The application discloses a heat pump system, a control method and a storage medium, and relates to the technical field of heat pump systems, and specifically discloses a heat pump system, which comprises a compressor, an air-side heat exchanger and a water-side heat exchanger, the air-side heat exchanger is communicated with the air inlet of the compressor through a flow regulating valve, the flow regulating valve controls the refrigerant flow entering the compressor according to the difference between the exhaust temperature of the compressor and the outlet water temperature of the water-side heat exchanger, and the heat pump system further comprises an on-off control valve connected in parallel with the flow regulating valve.

The application provides an air conditioner fan control method and device, an air conditioner and a storage medium. The method comprises the following steps: when it is detected that the air conditioner is working, the ambient temperature corresponding to the air conditioner is acquired; if the ambient temperature is less than a preset ambient temperature threshold, the refrigerant temperature of the air conditioner is acquired; and the target fan corresponding to the air conditioner is controlled to adjust according to the temperature change parameter of the refrigerant temperature, the target fan being used for assisting heat release of the heat exchanger of the air conditioner. Through the ambient temperature and the refrigerant temperature of the air conditioner, the target air conditioner assisting the heat release of the heat exchanger of the air conditioner is controlled to adjust, that is, the heat release amount controlled by the temperature change parameter, so that the unreasonable operation of the target fan in a low-temperature environment and when the refrigerant energy of the air conditioner is low is avoided, and the use performance of the compressor is improved.

The utility model provides an air conditioner indoor unit which comprises a heat exchanger and an on-off control device, and the heat exchanger comprises a refrigerant header pipe, a plurality of first heat exchange pipelines and at least one second heat exchange pipeline. Each first heat exchange pipeline is configured to receive a refrigerant from the refrigerant header pipe; each second heat exchange pipeline is communicated with the refrigerant header pipe so as to receive the refrigerant from the refrigerant header pipe; the on-off control device is arranged between the refrigerant header pipe and the multiple first heat exchange pipelines and is configured to control on-off between each first heat exchange pipeline and the refrigerant header pipe. According to the air conditioner indoor unit, the number of the first heat exchange pipelines communicated with the refrigerant header pipe can be adjusted through the on-off control device, so that the air outlet temperature of the air conditioner indoor unit is increased, blown cold air is more comfortable, and the use experience of a user is improved.

According to the heating and ventilation system provided by the invention, the refrigerant leaked in the indoor units is conveyed to the heat source side pipeline through the pressure relief pipeline communicating with the heat source side pipeline and the indoor side pipeline, so that when the refrigerant block valve of any indoor unit is closed, the refrigerant is blocked; according to the heating and ventilation system, the pressure relief valve corresponding to the indoor unit can be opened through the pressure relief pipeline corresponding to the indoor unit to discharge refrigerants leaked in the indoor unit and the indoor side pipeline to the heat source side pipeline, the pipe explosion phenomenon of the indoor unit and the indoor side pipeline due to refrigerant accumulation is avoided, and the use safety of the heating and ventilation system is improved.

This application relates to the field of industrial air conditioning, specifically a temperature and humidity gradient sensing-based self-regulating industrial variable frequency air conditioning system. The system includes an outdoor heat exchange unit, a refrigeration unit, a multi-stage air duct delivery unit, a terminal airflow regulation unit, a distributed environmental sensing unit, and a core controller. The outdoor heat exchange unit is coupled to the refrigeration unit via a circulating refrigerant pipeline, and its core function is to exhaust the heat generated by the refrigeration unit to the outdoor environment to cool the circulating refrigerant. The refrigeration unit includes a compressor, a variable frequency drive motor to drive the compressor, and cold air outlets for generating cool air. This system aims to acquire temperature and humidity gradient information for different areas within the factory through a distributed environmental sensing network, and, combined with the system's own operational status data, to perform multi-stage coordinated closed-loop regulation of airflow distribution, airflow direction, and cooling power. This achieves efficient, uniform, and adaptive control of the temperature and humidity field within the factory space, and improves the system's overall energy efficiency and operational stability.