1287results about "Air currents for screening" patented technology

The invention relates to the technical field of drying equipment, in particular to a low-consumption constant-temperature dehumidification device and a control method, and achieves an efficient and energy-saving constant-temperature dehumidification effect. The heat recovery module recovers heat in the condensation and regeneration process, the collaborative optimization module coordinates operation of all the modules, the energy utilization efficiency is remarkably improved, and energy consumption is reduced. The control system module dynamically adjusts the state of each module according to the real-time data of the temperature and humidity sensor, ensures the stability of the environment temperature and humidity, and further improves the control precision by adopting a dynamic decoupling control strategy. The regeneration module utilizes recovered heat energy to efficiently regenerate adsorbents and cooperates with novel composite adsorbents, the service life of the adsorbents is prolonged, and the dehumidification performance is improved. The air circulation module forms uniform airflow, and local temperature and humidity unevenness is avoided. A user can set parameters through the interaction unit, the system is controlled to automatically adjust the operation strategy, intelligent operation is achieved, and the system performance is optimized.

The invention provides an industrial air conditioner and waste heat recovery collaborative intelligent optimization control method and related equipment, and is applied to the technical field of data processing. Industrial air conditioner and waste heat recovery system data are fused through the Internet of Things and edge calculation, a standardized parameter sequence is generated through wavelet noise reduction and is converted into an energy flow network atlas, high-energy-consumption working conditions are subdivided through fuzzy clustering, and a dynamic energy efficiency coupling model is constructed. And based on the model, constructing an optimization equation by using an improved particle swarm algorithm, and obtaining the energy consumption of the key node in combination with an energy gradient utilization matrix. And an energy-saving potential coefficient is generated through the multi-dimensional feature matrix, a production plan grouping operation mode is combined, a self-adaptive optimization control model is constructed by using deep reinforcement learning, and finally a real-time regulation and control instruction and an energy efficiency scheme are generated to realize system collaborative optimization.

The invention provides a multifunctional heating ventilation air conditioner waste heat utilization method and system, and the method comprises the following steps: 1, obtaining multi-source data of an air conditioner system and an external heat source, carrying out the preprocessing, carrying out the grading collection and preliminary integration of the multi-source waste heat, and dividing the multi-source waste heat into high-temperature waste heat, medium-temperature waste heat and low-temperature waste heat; multi-source data of an air conditioning system and an external heat source are collected, condensation heat of a compressor, industrial waste heat and other multiple types of waste heat are integrated and subjected to staged treatment, and a high-temperature power generation-medium-temperature heat supply-low-temperature heat storage gradient utilization system is constructed; an LSTM neural network thermal load prediction model and an intelligent algorithm are combined to dynamically adjust a waste heat distribution path so as to realize self-adaptive switching of a refrigeration mode, a heating mode and a hot water mode, and meanwhile, a cascade system, photovoltaic energy, geothermal energy and the like are coupled through a direct-current micro-grid to construct a hybrid energy supply system. The problems that in the prior art, waste heat sources are single, energy efficiency is low due to the fact that gradient utilization is lacked, dynamic regulation and control are insufficient, and cooperation with renewable energy sources is not achieved are sequentially solved.

The invention relates to the technical field of constant temperature and humidity control, and discloses a multi-effect total heat recovery constant temperature and humidity system. A heat recovery distribution control module of the system analyzes the matching degree of heat recovery efficiency and energy stability and generates a heat recovery distribution control parameter set; the temperature and humidity balance optimization module adjusts the temperature and humidity distribution balance of the cavity and generates a temperature and humidity regulation and control optimization parameter set; the fresh air dynamic regulation module optimizes the fresh air input rate and path distribution and generates a fresh air dynamic regulation result; the abnormal working condition intervention module responds to temperature and humidity fluctuation and generates an abnormal intervention adjustment data set; and the environment parameter optimization module adjusts the target regulation and control path parameters and generates an environment temperature and humidity optimization data table. According to the system, through cooperative work of all the modules, efficient and accurate regulation and control over the environment temperature and humidity are achieved, the stability and adaptability of the system under complex working conditions are improved, and the requirements of modern industrial production and other scenes for high-precision environment control are met.

A ventilation system including a ventilator; and an outdoor unit, wherein the ventilator includes a housing including a first intake, a second intake, a first outlet and a second outlet, a plurality of dampers to change flow paths of air flowing through the housing, first and second air blowers, a heat exchanger in the housing, and a processor to control the dampers and first and second air blowers to form a first flow path in which outside air flows through the heat exchanger, or form a second flow path in which room air flows through the heat exchanger, to thereby form a flow path in the ventilator, while air flows through the flow path, control the outdoor unit to form frost on the heat exchanger, and control the outdoor unit to stop operating based on a preset frosting termination condition so that the frost melts to clean the heat exchanger.

The present application relates to the technical field of air conditioners, and particularly relates to an air conditioner control method and device, a multi-connected air conditioner and a storage medium, the present application determines the target heat recovery mode of the multi-connected air conditioner by judging the water tank temperature of the hot water tank, the heating energy demand and the total energy demand of each air conditioner indoor unit obtained when the multi-connected air conditioner simultaneously exists refrigeration and heating water demand, and then adjusts the communication state of the reversing device and the throttling element according to the target heat recovery mode, so as to achieve the purpose of simultaneously operating refrigeration and heating water by one heat pump system, and heat the water tank by the waste heat of air conditioner refrigeration, thereby avoiding the technical problem that the heating and heating water in the prior art multi-connected air conditioner are not simultaneously performed, and improving the use experience of the user.

The invention provides an automobile mosquito protection system and method based on a negative pressure airflow barrier, and the system comprises an airflow generation module which comprises at least one fan arranged at an automobile door frame and is used for generating airflow flowing from the interior of a passenger compartment to the exterior of an automobile; and the air guide structure communicates with the airflow generation module and is used for forming a negative pressure airflow barrier covering the vehicle door opening at the vehicle door opening. An airflow barrier is established at the moment of opening of the vehicle door, mosquitoes are prevented from entering from the source, and passive is changed into active; a pure physical airflow expelling mode is adopted, no chemical substance or high-voltage electric shock risk exists, the air quality in a vehicle is preferentially monitored, and the health of passengers is guaranteed; intelligent control is carried out based on double signals of the vehicle door opening degree and biological recognition, and the protection effect, energy consumption and noise are effectively balanced; core components of the system are designed in a hidden integrated mode, and the appearance and getting-on and getting-off convenience of the vehicle are not affected.

Disclosed in the present invention is a heat recovery ventilator, comprising a frame, a housing, a heat exchange rotor, a central shaft, a plurality of shaft seals, an outer rotor motor, and a motor support; the housing is mounted on the frame, the heat exchange rotor is rotatably mounted in the housing, the heat exchange rotor is fixed to an outer rotor motor housing by means of an inner fixing support, two ends of the central shaft are fixedly mounted on the frame, and the plurality of shaft seals are connected between the housing and the heat exchange rotor. The outer rotor motor is mounted in the middle of the inner cavity of the heat exchange rotor by means of the motor support, and a shaft of the outer rotor motor is fixedly connected to the central shaft. In the present invention, since the outer rotor motor provides rotating power for the heat exchange rotor, the structure is simple, and since an outer cylinder and an inner cylinder in the heat exchange rotor are conical cylinders, when the heat exchange rotor rotates, the centrifugal forces acting on dewdrops attached to the inner cylinder and the outer cylinder are different, the dewdrops concentrate in the axial direction under the action of the centrifugal forces and are transferred to a cold air passage at the shaft seals for evaporation, the flow velocity of the dewdrops is higher, and the heat exchange effect is better.

The invention relates to an energy-saving fresh air system suitable for a high-temperature and high-humidity area and a control method. The energy-saving fresh air system comprises a filter, a heat exchanger, a surface air cooler and a fan which are sequentially arranged on an air pipe. Outdoor fresh air enters the heat exchanger through the filter, the heat exchanger precools the filtered fresh air with dehumidification cold air from the surface air cooler as a cold source, and the precooled fresh air is subjected to deep cooling dehumidification through the surface air cooler, reheated through the heat exchanger and finally fed into a room through the draught fan. A branch pipe is arranged between the filter and the heat exchanger, filtered fresh air is led out of the branch pipe to be fed into the surface air cooler, and the amount of the fresh air fed into the surface air cooler is controlled through a bypass air valve. And the other part of fresh air controls the fresh air volume fed into the heat exchanger through the pre-cooling air valve, the circulation path and the heat exchange proportion of the fresh air are controlled through linkage of the bypass air valve and the pre-cooling air valve, and air supply temperature adjustment is achieved. And the fresh air is pre-cooled by using the cold air after deep dehumidification, and meanwhile, the dehumidified low-temperature cold air is reheated, so that the energy consumption is reduced.

The utility model discloses a heat exchange unit, and relates to the technical field of machine room air conditioners. The two rows of heat exchange core bodies are arranged on the rack in parallel in the first direction, and the heat exchange core bodies are obliquely arranged, so that the outdoor air inlet faces and the outdoor air outlet faces of the heat exchange core bodies intersect with the first direction and the second direction, and the second direction is perpendicular to the first direction; the spraying system comprises two spraying devices corresponding to the heat exchange core bodies, and each spraying device comprises a first spraying set located on the outdoor air outlet side of the corresponding heat exchange core body and a second spraying set located on the outdoor air inlet side of the corresponding heat exchange core body; the multiple nozzles of the first spraying set are sequentially arranged in the direction parallel to the outdoor air outlet face, and the multiple nozzles of the second spraying set are sequentially arranged in the direction parallel to the outdoor air inlet face. The spraying mode and the spraying water amount of the spraying system can be adjusted according to different working conditions, so that the unit can better save energy and water under the conditions of different temperatures and humidity.

The utility model relates to the technical field of heating ventilation air conditioners, in particular to an exhaust heat recovery and condensation heat recovery all-in-one machine. Comprising a condensation heat recovery part and an exhaust heat recovery part, the condensation heat recovery part and the exhaust heat recovery part are divided into an upper layer and a lower layer, and the upper layer and the lower layer are both installed on a base. The condensation heat recovery part comprises a fresh air opening, an access door, a filter screen, an evaporation coil pipe, a reheating coil pipe, an air feeder and an air supply opening; outdoor fresh air enters the fresh air opening, then sequentially passes through the filter screen, the evaporation coil and the reheating coil, and then is fed into a room through the air feeding opening by the air feeder. According to the utility model, unnecessary energy waste can be reduced.

The invention relates to a fully-mechanized face multi-angle blowing-suction purification dust removal system and a dust removal method, and belongs to the technical field of coal mine dust treatment. Comprising a dust concentration sensor arranged on a hydraulic support and a linear dust remover arranged on a hollow interlayer of a chute baffle of the scraper conveyer. The dust concentration sensor detects the dust concentration of the coal face and transmits a signal to the control system, and the control system selectively opens and closes the dust remover at the corresponding position to achieve accurate dust removal. The linear dust remover forms an entrainment effect to suck dust generated by coal cutting of the roller of the coal mining machine, and the dust is purified. And meanwhile, a barrier is formed between the coal mining machine and the pedestrian side in manners of forming an air curtain, a water curtain, a fog gun and the like at the air outlet, so that untreated dust is prevented from diffusing to the pedestrian side for the second time. The device is simple in structure and convenient to mount, solves the problem of serious dust pollution of the fully-mechanized coal mining surface, and realizes source treatment of dust while preventing dust diffusion.

The invention discloses an air supplement centralized dehumidification device for underground buildings, and belongs to the technical field of dehumidification heat exchange devices, the air supplement centralized dehumidification device comprises two tower bodies, one tower body is used for dehumidifying air, the other tower body is used for regenerating dehumidification liquid, and a compression heat pump system is arranged between the two tower bodies and used for refrigerating and heating the two tower bodies respectively. The double-tower-body design is responsible for air dehumidification and dehumidification liquid regeneration respectively, a complete energy circulation closed loop is constructed in cooperation with a compression heat pump system composed of an integrated evaporator, a condenser, a compressor and an expansion valve and a plate heat exchanger, the heat pump system efficiently transfers heat through phase change circulation, a stable cold and heat source is provided for the dehumidification and regeneration process, and the heat pump system has the advantages of energy conservation and environmental protection. The plate heat exchanger achieves heat recovery of a low-temperature dilute solution and a high-temperature concentrated solution, energy waste is reduced, and compared with the problems of high energy consumption of traditional air conditioner dehumidification, low energy utilization rate of single solution dehumidification and the like, the total energy consumption of the system is greatly reduced, and the green and environment-friendly concept is fully practiced.

The invention relates to the technical field of curtain walls, and provides a building energy-saving curtain wall which comprises a curtain wall body, the curtain wall body comprises a frame, outer glass arranged on the frame and inner glass rotationally connected to the frame, a cavity is formed between the outer glass and the inner glass, and an air inlet is formed in the outer glass; the curtain wall body is provided with a filtering assembly, the filtering assembly is used for filtering dust of air entering the cavity from the air inlet, the filtering assembly comprises a gauze element arranged in the cavity, the gauze element is obliquely arranged, the upper end of the gauze element is inclined towards the inner glass, and the lower end of the gauze element is inclined towards the outer glass. The lower end of the gauze element inclines towards the outer glass, and a driving assembly used for driving the gauze element to move in the length direction of the gauze element is arranged on the frame. According to the invention, the position for adsorbing dust before the gauze element is changed, and the retention amount of subsequent dust and the circulation amount of air are improved, so that the filtering effect and the ventilation performance are improved.

The invention discloses a five-constant system capable of intensively controlling and processing indoor environment, which belongs to the technical field of indoor environment regulation and control, and comprises an indoor unit body arranged indoors, a plurality of partition plates are arranged in the indoor unit body, and the indoor unit body is divided into an air return cavity, a cold and hot water heat exchange cavity, a fresh air heat exchange cavity, a mixed air heat exchange cavity and an air supply cavity; an air return opening and an air supply opening are formed in the upper end of the indoor unit body. A fresh air opening and an exhaust air opening are formed in one side of the indoor unit body. A return air filter is arranged in the return air cavity, a circulating pump and an efficient tank are arranged in the cold and hot water heat exchange cavity, a fresh air fan is arranged in the fresh air heat exchange cavity, a plate exchange module is arranged in the mixed air heat exchange cavity, and an air supply fan, a plate exchange evaporator and a filter element are arranged in the air supply cavity. And the outdoor air source heat pump is connected with the efficient tank. Indoor refrigeration is achieved through the all-air system and the ground cold radiation system in summer, indoor heating is achieved through the all-air system and the ground heating radiation system in winter, and then the five-constant index requirement is met.

The invention provides a sludge drying fresh air adjusting system and method.According to the sludge drying fresh air adjusting system, particulate matter grading interception is achieved through a three-stage combined structure and three-stage filtering in an air filtering module, the maintenance frequency is reduced through the primary layer washable design, and the blocking risk is monitored and early warned through the intermediate layer pressure difference; and the high-level quick release structure is convenient to replace. The temperature control module integrates a waste heat recovery mode and an electric heating mode, the heat transfer efficiency is enhanced through a nano-coating, temperature uniformity is ensured through partition temperature control, and the refrigeration unit and the heating system are interlocked to avoid energy conflicts. The intelligent control module achieves dynamic adjustment through a multi-parameter sensing network, a three-level early warning mechanism guarantees safe and stable operation of the system, the waste heat priority algorithm maximizes the energy utilization rate, and the response speed of the stepless speed regulation mechanism meets the industrial-level real-time requirement. The system integrally realizes refined energy consumption management, effectively reduces carbon emission in the sludge drying process, and ensures that the air quality meets the industrial hygiene standard.

The utility model discloses an air duct structure and an air curtain machine. The air curtain machine comprises a shell, an air duct structure and a wind wheel structure. The shell is provided with an air inlet and a wind wheel chamber, and the air inlet is communicated with the wind wheel chamber. The air duct structure is provided with an air inlet end and an air outlet end, and the air inlet end communicates with the wind wheel chamber; the air duct structure comprises two air duct side plates which are arranged in a spaced mode. The air duct side plate comprises a protruding part and two connecting parts, the connecting parts are fixed relative to the shell, the protruding part is arranged between the two connecting parts, the protruding part protrudes towards the inner side of the air duct structure, and the protruding part and the connecting parts are in arc smooth transition. The wind wheel structure is rotationally installed in the wind wheel chamber and used for driving air to flow from the air inlet to the air duct structure. According to the air duct side plate, by arranging the protruding parts, air can be guided, transition of air flow is smoother, the air can be prevented from directly colliding with the inner side wall of the air duct side plate, after collision is reduced, vortex generation can be restrained, and therefore noise generation can be reduced.

The invention discloses a dispersed exhaust air source heat pump centralized heat recovery system based on gas-to-gas heat exchange, and relates to the technical field of exhaust air heat recovery, the system comprises an intelligent control module, the intelligent control module comprises a parameter monitoring unit, a working condition matching unit and an execution regulation and control unit, the parameter monitoring unit sets an initial monitoring frequency according to position distribution and exhaust characteristics of exhaust points of different functional areas and collects environment parameters, flow parameters and pollutant concentration parameters of the exhaust points, the working condition matching unit generates a working condition adjusting instruction, and the execution regulation and control unit executes regulation and control according to the working condition adjusting instruction. And outputting a regulation and control signal to modify the corresponding equipment working parameters. By installing the intelligent control module, the function of dynamically adjusting the heat exchange process and the operation state of the heat pump according to exhaust parameters is achieved, the problems that a traditional system is lagged in regulation and control and poor in parameter matching performance are solved, and the response speed and regulation and control precision of the heat recovery system are improved.

The disclosure relates to the field of ventilation systems, specifically to ventilation systems in residential and non-residential (commercial) buildings. Specifically, the invention relates to decentralized supply and extract units with waste heat recovery and can be used for transmitting heat and power from an extraction air flow, i.e. from a flow of air extracted from a building, to a supply air flow, i.e. a flow of fresh air being drawn into a building, for the purpose of replacing spent air from the building.

The utility model relates to a shipbuilding industry coating workshop waste gas cold and hot energy circulation energy-saving and carbon-reducing system which comprises an air supply system, organic waste gas treatment equipment, a matched pipeline, a valve and a heat exchanger, and an air inlet pipeline of the organic waste gas treatment equipment is connected with an air supply system pipeline of a coating workshop through the heat exchanger for heat exchange; a heat removal pipeline is led out of an exhaust port of the organic waste gas treatment equipment and connected with a coating room air supply system pipeline through a heat removal pipeline isolating valve. The air supply system is suitable for the coating workshop in the shipbuilding industry, heat energy / cold energy in the coating workshop is recycled through the heat exchange technology, and a dehumidifier matched with the coating workshop can keep the temperature of the coating workshop within the temperature range suitable for operators at low operation energy consumption in the operation stage; in addition, heat of gas at the exhaust port of the organic waste gas treatment equipment is used for replacing a warm air blower, and an auxiliary heat source is provided for the coating room in cold weather.

The invention relates to the technical field of ventilation, in particular to an air treatment system integrating a direct air trapping module and a heating ventilation air conditioning device and a control method of the air treatment system, the system comprises an HVAC module, the HVAC module comprises a fresh air inlet, a filter, a mixing point, a fan, a temperature and humidity adjusting unit and an air supply outlet which are connected in sequence, and the HVAC module further comprises a return air header pipe and an exhaust outlet; and the DAC module is provided with an air inlet, a purified air outlet, a regenerated energy input interface and a CO2 product output port. According to the system provided by the invention, the DAC module and the HVAC are efficiently coupled through wind path coordination and energy coordination, and the target node in the first to fourth nodes is started and adjusted to adjust the air flow direction for different operation modes, so that the dynamic regulation and control of the air flow path are realized, and the capability of improving the indoor air quality of the HVAC module is enhanced.

An air handling system for circulating conditioned air through an environment, said system comprising an air intake unit and an air extractor. The air intake unit comprises: a first heating stage; a condensing stage configured to output a humidity-controlled airstream at no greater than a first predetermined temperature, said first predetermined temperature selected such that when the humidity-controlled airstream is further heated to a second predetermined temperature producing a heated and humidity-controlled airstream, the heated and humidity-controlled airstream has a predetermined maximum humidity; a second heating stage configured to heat the heated and humidity-controlled airstream to the second predetermined temperature, and an output assembly configured to output the heated and humidity-controlled airstream at the second predetermined temperature to the environment. The system further comprises: a heat recovery apparatus configured to extract waste heat from the environment, an energy transfer means, and a control system.

The invention discloses a heat pump type efficient dehumidification device with a waste heat recovery function, and belongs to the technical field of efficient dehumidification devices. A temperature locking cavity is formed in the center of the interior of a dehumidification base, a first hot-pressing dehumidification box and a second hot-pressing dehumidification box are symmetrically arranged at the two ends of the temperature locking cavity, heat pump storage boxes are arranged at one ends of the hot-pressing dehumidification boxes side by side, and a flow guide center frame is arranged in the center of the interior of the second hot-pressing dehumidification box; the device has the remarkable advantages that firstly, a high-temperature primary dehumidification and low-temperature secondary dehumidification grading mode is adopted, the design of a zigzag flow channel and a symmetrical cavity is matched, the dehumidification efficiency is high, continuous operation can be kept during cavity dehydration, and constant temperature and low humidity of the environment are ensured; secondly, a whole-process waste heat utilization system is constructed, cold water is converted into hot water through cold water spraying, heat exchange arc piece circulation and the like, meanwhile, waste heat of a temperature locking cavity is recycled, and energy waste is reduced; and hot water and waste water are treated in order through the double-pipe hot drain valve, and environmental protection and economical efficiency are both considered.

The present invention discloses a waste heat recovery control system and method based on a central air conditioner, belonging to the technical field of energy-saving air conditioners. The system includes: a data acquisition module, an air supply volume initial calibration module, an air supply volume feedback adjustment module, and a central air conditioner database. First, the operating status data of the central air conditioner and the waste heat recovery control system are acquired, and the working environment data of the central air conditioner are collected. Then, based on the operating status data and working environment data of the central air conditioner, an initial calibration index of the air supply volume of the central air conditioner is obtained through comprehensive analysis. Based on the initial calibration index of the air supply volume of the central air conditioner, a preset air volume of the waste heat recovery control system is obtained. Finally, based on the operating status data of the waste heat recovery control system, an air supply volume adjustment parameter of the waste heat recovery control system is analyzed and the preset air volume of the waste heat recovery control system is adjusted according to the air supply volume adjustment parameter of the waste heat recovery control system.

The multi-mode ultra-low energy consumption building kitchen makes-up air exhaust air coupling multi-stage heat recovery system relates to the kitchen ventilation technical field.The present application solves the problems of high operation cost and maintenance workload of the existing kitchen heat recovery system, increases the complexity and installation difficulty of the system, and affects the heat recovery efficiency of the system. In the normal working mode, the make-up air and exhaust air system runs simultaneously, fresh air enters the kitchen through the make-up air channel, and waste air is discharged through the exhaust air channel. When the temperature in the exhaust air exceeds the set threshold, the control system will trigger the heat energy recovery mode. In this mode, the excess heat energy will be introduced into the heat energy storage tank to store the excess heat. During the energy demand peak period, the control system will start the energy supply mode. At this time, the heat energy in the heat energy storage tank can be released to supply the additional heat energy demand. The present application realizes heat energy recovery and efficient use of energy by coupling the kitchen make-up air and exhaust air system, heat exchange and energy storage device.

The heat pump (1, 101) of the PTAC type comprises a first battery (10) of the heat exchange type and a second battery (30) of the heat exchange type, the first battery (10) being arranged to exchange heat with the external environment with respect to the environment to be treated, and the heat pump comprising a fan (20) connected to the first battery (10) for forcing external air to flow through the first battery (10). The first cell (10) comprises at least two, preferably three, consecutive portions (12, 13, 14), respectively a central portion (13), each of which is planar, and at least one lateral portion (12, 14), which is angled relative to the central portion (13) at an inner camber angle preferably between 150 DEG and 175 DEG.

This application relates to an electro-purification device and an air curtain machine. The electro-purification device includes a discharge assembly, comprising at least one discharge unit. Each discharge unit includes multiple linear corona discharge electrodes and a ring-shaped grounding electrode, all fixedly arranged. All corona discharge electrodes and the ring-shaped grounding electrode are arranged opposite each other along a first direction, and all corona discharge electrodes are arranged radially towards the side closest to the ring-shaped grounding electrode. An insulating back-corona element is also included, arranged along the first direction on the side of the ring-shaped grounding electrode facing away from the corona discharge electrodes. By arranging all corona discharge electrodes radially towards the side closest to the ring-shaped grounding electrode, not only can the area of ​​corona discharge be increased, but a cone-shaped electric field can also be formed, making the corona discharge area compact. Therefore, it can concentrate and rapidly treat pathogens such as smoke, odors, droplets, and aerosols in enclosed spaces. Furthermore, by using the insulating back-corona element to generate back-corona discharge, an even better purification effect can be achieved.

The invention provides a restaurant exhaust air recovery type kitchen ventilation system and method based on air volume self-adaption. The system comprises a restaurant ventilation subsystem, a kitchen non-open fire area ventilation subsystem and an air path switching controller. A restaurant main exhaust pipe of the restaurant exhaust fan is connected with a restaurant first exhaust branch pipe and a restaurant second exhaust branch pipe, the restaurant first exhaust branch pipe is communicated into a public walkway of a kitchen non-open fire area, a second air valve is arranged on the restaurant first exhaust branch pipe, the restaurant second exhaust branch pipe is communicated to the outside, and a third air valve is arranged on the restaurant second exhaust branch pipe; the kitchen non-open-fire area fresh air fan and the kitchen non-open-fire area indoor fresh air pipe are communicated with the kitchen non-open-fire area, a first air valve is arranged on the kitchen non-open-fire area indoor fresh air pipe, and the first air valve, the second air valve, the third air valve and the restaurant fresh air fan are all connected with the air path switching controller. The invention relates to the technical field of building ventilation and air conditioning, and can solve the problems of energy waste and uneconomical system operation in the prior art.

The utility model relates to a multifunctional air conditioner for an industrial building. A rack forms a closed structure through a plurality of side plates arranged around the rack; outdoor fresh air can enter the machine frame through the outdoor air inlet, is filtered through the bag type filter, is preheated or precooled through the energy recovery heat exchanger, and is blown out from the indoor air outlet under the action of the first fan. Indoor air can enter the rack through the indoor air inlet and is exhausted through the outdoor air outlet, so that indoor contaminated air is exhausted outwards; indoor air can also enter the rack from the indoor air inlet, the air return valve is opened, the indoor air is blown out from the indoor air outlet after passing through the energy recovery heat exchanger and the first fan, and indoor air circulation is achieved. Outdoor fresh air introduction, indoor vitiated air discharge and indoor air circulation are integrated in the rack, different functions are achieved according to requirements, the equipment integration degree is high, space utilization is reasonable, and operation and maintenance are convenient.

The application discloses an air conditioner indoor unit and an air conditioner with the same. The air conditioner indoor unit comprises an indoor unit body, a fresh air pipe, an air guide pipe, a fresh air heater and an auxiliary heater. The indoor unit body is provided with an air inlet. An exhaust end of the fresh air pipe is communicated with the air inlet. The fresh air pipe is suitable for guiding outdoor fresh air to the air inlet. An air inlet end of the air guide pipe is communicated with the indoor unit body. An exhaust end of the air guide pipe is communicated with the air inlet. The air guide pipe is suitable for guiding indoor air to the air inlet. The fresh air heater is arranged at the air inlet to heat the airflow flowing into the air inlet. The auxiliary heater selectively heats the indoor air flowing to the air inlet in the air guide pipe. The indoor air is heated and guided to the air inlet through the air guide pipe and the auxiliary heater. The indoor air is mixed with the fresh air flowing to the air inlet from the fresh air pipe. The temperature of the fresh air is preliminarily increased. The airflow is heated twice through the fresh air heater. The heating effect on the fresh air is good. The temperature of the fresh air is greatly increased. The user's comfort is good.