43results about How to "Increase air temperature" patented technology

The invention discloses a black and odorous water body treatment device for ecological restoration and a treatment method thereof. The device comprises a main body unit, a deodorization assembly, a spraying assembly, an aeration assembly and a stirring assembly. The black and odorous water body treatment method in the scheme is mainly realized through the black and odorous water body treatment device for ecological restoration, which consists of the main body unit, the deodorization assembly, the spraying assembly, the aeration assembly and the stirring assembly, so that the black and odorous water body can be deodorized when being injected into the treatment pond, the harm of peculiar smell to human bodies is reduced, and meanwhile, the heating box can be preheated, so that the treatment effect is improved. The temperature of air entering the water body is increased, low dissolved oxygen content caused by low temperature is prevented, chemical agents are evenly sprayed through the spraying assembly, the aeration assembly and the stirring assembly operate at the same time, in the water body stirring process, hot air is introduced for aeration, the reaction of the water body with the chemical agents can be accelerated in the water body flowing process, and the water body flow speed is increased. The purification effect of the device on the black and odorous water body is improved.

The invention discloses a dustproof case with an external heat dissipation structure and a using method thereof.The dustproof case comprises a case body, a cooling module, a GPU heat dissipation module and a CPU heat dissipation module, the front side of the case body is provided with a first cooling bin, the top of the case body is provided with a second cooling bin, and meanwhile the rear portion of the case body is provided with a wire arrangement bin; according to the invention, high-heat components such as a CPU and a power supply element on a mainboard are covered by the CPU heat dissipation module which is designed in a large area, and high-heat components such as a chip and a power supply element of a GPU are covered by the GPU heat dissipation module, so that most heat generated when computer hardware is used can be quickly transferred to a cooling liquid; according to the computer case, the external first cooling bar and the external second cooling bar are matched with the two cooling modules, cooling can be conducted outside the computer case, therefore, external air does not need to enter the computer case to participate in heat dissipation, and the efficiency that external dust enters the computer case body is greatly reduced.

The utility model discloses a high-temperature heat storage peak regulation operation system for low-heating-value gas power generation, and belongs to the technical field of power plant equipment. The high-temperature heat storage peak regulation operation system for low-heating-value gas power generation comprises a heating furnace heat storage unit which comprises a fused salt heating furnace and a low-temperature storage tank, the fused salt heating furnace is used for heating low-temperature fused salt in the fused salt heating furnace through heat generated after low-heating-value gas is burnt, and the low-temperature storage tank is used for storing the low-temperature fused salt; the high-temperature evaporation unit comprises a high-temperature storage tank, an evaporator and a steam pocket, and the high-temperature storage tank is used for storing high-temperature fused salt; the working medium inlet end of the evaporator communicates with the high-temperature storage tank, the working medium outlet end of the evaporator communicates with the low-temperature storage tank, the fused salt heating furnace is connected with the low-temperature storage tank, and the steam pocket is used for generating high-temperature saturated steam. The high-temperature heat storage peak regulation operation system for low-heating-value gas power generation can adjust the power generation power of a power plant and improve the stability of a power grid load, and is a load side energy storage operation mode for constructing a novel energy system in China.

The invention discloses a bead foaming post-processing device and a method for using the device. The processing chamber of the device is connected to the outside of a foaming barrel and is provided with a feeding valve. Thus, after closing the feeding valve, the processing chamber and the foaming barrel do not affect each other, which is beneficial to improving the foaming utilization rate of the foaming barrel. The device is used to perform bead foaming post-processing, which is beneficial to avoiding the defect that the beads need to wait for a long maturation time in the foaming barrel after foaming, and has good practicality. Since the processing chamber is provided with an exhaust mechanism, on the one hand, it is convenient to form a negative pressure for convenient feeding, and on the other hand, it is convenient to exhaust the moist air coming in from the foaming barrel together with the foaming beads, which plays a role in drying the foaming beads, and is beneficial to shortening the maturation time. The setting of the stirring mechanism is convenient for stirring so that the foaming beads do not stick together, and has good practicality.

A kitchen air conditioning system includes an air conditioning component and a fume extraction component, a throttling component is installed on the refrigerant pipeline between a first heat exchanger and a second heat exchanger, a first end of the refrigerant branch is connected to the refrigerant pipeline between the second heat exchanger and a compressor, a second end of the refrigerant branch is connected to the refrigerant pipeline between the first heat exchanger and the throttling component, a third heat exchanger is installed on the refrigerant branch, and a stop valve is installed on the refrigerant branch between the third heat exchanger and the compressor. The kitchen air conditioning system is provided with a third heat exchanger on the refrigerant branch. When the stop valve on the refrigerant branch is opened, a part of the high-temperature and high-pressure gas refrigerant from the compressor can flow through the third heat exchanger, so that the air temperature is increased to a certain extent before entering the first heat exchanger, thereby achieving the first heat exchanger without frosting or delaying the frosting time.

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.

The utility model relates to the technical field of pulverized coal boilers, and discloses a boiler hot air recirculation device which comprises a coal feeder, a coal mill, a burner, a boiler, a primary air pre-heater, a secondary air pre-heater, a primary air fan and an air feeder. The coal feeder conveys coal into the coal mill, and a coarse powder separator is mounted on the coal mill; the coarse powder separator is connected with the combustor through a coal mill outlet pipe, and the combustor is connected with the boiler; the primary air pre-heater is connected with the coal mill through a hot primary air pipeline, and the secondary air pre-heater is connected with the combustor through a hot secondary air pipeline; a primary fan outlet pipe is arranged on the primary fan and connected with the primary air pre-heater, and an air feeder outlet pipe is arranged on the air feeder and connected with the secondary air pre-heater; a hot air recirculation pipe is arranged on the hot secondary air pipeline and connected with the primary fan, and a cold primary air pipeline is arranged on an outlet pipe of the primary fan and connected with the hot primary air pipeline.

The utility model discloses a circumferential auxiliary hot air heating smoking set. The circumferential auxiliary hot air heating smoking set comprises an electromagnetic coil assembly and a vacuum thermal insulation heating module. The electromagnetic coil assembly comprises a tower type electromagnetic coil (7) which is gradually thickened from top to bottom, an upper coil mounting plate (3) at the upper part of the electromagnetic coil, and a lower coil mounting plate (4) at the lower part of the electromagnetic coil; the vacuum thermal insulation heating module comprises a smoke cup (10) and a thermal insulation sleeve (8) on the periphery of the smoke cup (10), and a vacuum space is formed between the outer wall of the smoke cup (10) and the inner wall of the thermal insulation sleeve (8). A plurality of arc-shaped grooves (1001) and rectangular grooves (1002) are formed in the inner wall of the cigarette cup (10); an outer heating sheet (1401) is arranged in each arc-shaped groove (1001); an inner heating sheet (1402) is arranged in each rectangular groove (1002); the electromagnetic coil assembly is arranged on the periphery of the vacuum thermal insulation heating module in a sleeving mode.

The invention discloses a water-fluorine linkage air conditioning system, which comprises a first refrigerant circulation loop, a second refrigerant circulation loop, a third refrigerant circulation loop, a fourth refrigerant circulation loop, a fifth refrigerant circulation loop, a sixth refrigerant circulation loop, a fifth refrigerant circulation loop and a sixth refrigerant circulation loop, and is characterized in that the first refrigerant circulation loop is formed by connecting a compressor, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger; a second refrigerant circulation circuit that circulates a refrigerant in a refrigerant circulation circuit formed by connecting a compressor, a water-fluorine heat exchanger, a second throttle device, and an evaporator; a first water circulation circuit that circulates water in a water circulation circuit formed by passing through the first use-side end and the water-fluorine heat exchanger; a second water circulation circuit that circulates water in a water circulation circuit formed by passing through the second use-side end and the water-fluorine heat exchanger; the tail end of the second use side is arranged on the air outlet side of the indoor heat exchanger. The air conditioning system can realize dehumidification without cooling, and is high in reliability and low in energy consumption.

The present invention discloses a four-chamber RTO burner and a working method thereof, comprising an equipment box, wherein a plurality of groups of metal partitions are arranged in the equipment box, and the metal partitions divide the space in the equipment box into a combustion chamber, a waste heat recovery chamber, a component chamber and an exhaust gas recovery chamber, wherein two groups of combustion chambers are symmetrically opened, the waste heat recovery chamber and the component chamber are opened at the bottom of the equipment box, and the exhaust gas recovery chamber is opened above the waste heat recovery chamber away from the component chamber. A heat storage body is installed in the middle of the combustion chamber, and a combustion mechanism is installed at the connecting position of the two groups of combustion chambers, and the combustion mechanism includes two groups of branch gas pipes and nozzles at the ends of the two groups of branch gas pipes, and the nozzles are extended to the central part of the combustion chamber and bent upward, and a guide ring is arranged above the combustion chamber, and a group of cross-shaped gas distribution pipes are arranged in the middle of the guide ring. The four-chamber RTO burner and the working method thereof are easy to ensure the combustion effect, effectively prevent the heat storage body from being blocked, and are recommended for wide use.

The invention relates to a ship living cabin airflow optimization analysis method, which comprises the following steps of: constructing a geometric model of a cabin, and setting air inlet and outlet layout and wind speed parameters; through CFD simulation software, a Realizable k-epsilon turbulence model is used for simulating and calculating air flow in a ship living cabin, and air temperature, pressure, flow velocity and PMV and PPD thermal comfort evaluation indexes are analyzed in an emphasized manner; according to the simulation result, the thermal comfort degree of the ship living cabin can be evaluated, so that the layout of the ship living cabin is optimized in a targeted manner, the airflow organization of an air conditioning system is optimized, and it is ensured that the PMV value is between-1 and 1, and the PPD value is smaller than 20%; the air flow uniformity and the thermal comfort degree of the ship living cabin can be improved, the local retention airflow phenomenon is reduced, meanwhile, the operation efficiency of an air conditioning system is improved, and the energy-saving and emission-reducing effects are achieved.

The invention provides an air conditioner, a control method and device of the air conditioner and a readable storage medium. The air conditioner comprises an air conditioner body, the air conditioner body comprises a first air inlet channel, a first air outlet channel and a heat exchanger, and air is blown out from the first air outlet channel after entering the heat exchanger through the first air inlet channel for heat exchange; the heat recovery unit is arranged on the air conditioner body, the heat recovery unit comprises a first air duct and a second air duct which are adjacently arranged and separated from each other, the first air inlet channel communicates with the outside through the first air duct, and the first air outlet channel communicates with the outside through the second air duct. The problem solved by the invention is that the comfort of user experience in a dehumidification mode cannot be improved by the technical scheme in the related technology.

The invention relates to the technical field of air conditioners, and discloses a method for controlling an air conditioner, which comprises the following steps: acquiring the air outlet temperature of an indoor unit under the condition that the air conditioner operates in an electric heating mode; or under the condition that the air outlet temperature is smaller than the target comfortable temperature value, the rotating speed value of the indoor draught fan is reduced, so that the air outlet temperature is increased; and under the condition that the air outlet temperature is larger than the target comfortable temperature value, the rotating speed value of the indoor draught fan is increased so as to reduce the air outlet temperature. When the air conditioner operates in the electric heating mode, the air outlet temperature is effectively prevented from being too low or too high, and the experience comfort degree of consumers is improved. The invention further discloses a device for controlling the air conditioner, the air conditioner and a storage medium.

The refrigeration air duct assembly and refrigerator of this application include an air duct housing, an evaporator, and a fan. The air duct housing forms a first air duct, a second air duct, and a diversion air duct. The first air duct and the second air duct are connected. The diversion air duct is independently arranged relative to the first and second air ducts. The air duct housing is provided with a first air outlet and a second air outlet, which are correspondingly arranged and surround the corresponding first air outlet. The second air outlet is connected to the diversion air duct, and the first air outlet is connected to the second air duct. The evaporator is housed in the first air duct and connected to the air duct housing. The fan is arranged in the passage connecting the first and second air ducts and connected to the air duct housing. This allows the refrigeration air duct assembly to mix some of the hot air in the refrigerator compartment with the low-temperature cold air passing through the evaporator in advance. This mixing process can significantly increase the final outlet temperature of the air delivered into the refrigerator compartment.

This invention provides a heat exchange device for waste heat utilization and cold-end corrosion prevention, comprising an air inlet box, a heat exchange box, a negative pressure device, an air outlet main pipe, a hot air return pipe, and several heat exchange units. The heat exchange box has a waste heat channel. Each heat exchange unit has two ends connected to the air inlet box and the input end of the negative pressure device, respectively, and each heat exchange unit extends through the waste heat channel. The negative pressure device is connected to the air outlet main pipe. The air outlet main pipe is also connected to one end of the hot air return pipe. The other end of the hot air return pipe extends into the waste heat channel, then extends out from the waste heat channel and connects to the air inlet box, thereby returning a portion of the high-temperature air after heat exchange to the air inlet box. This heat exchange device can increase the air temperature drawn into the heat exchange units, preventing the formation of a corrosive ash layer at the cold end of the heat exchange units due to excessively low temperatures, completely solving the technical problem of corrosive ash accumulation inside the device, extending the service life of the heat exchange device, and saving maintenance and repair costs.

The utility model relates to air conditioning technical field discloses a device for fluorine system comfort air conditioner air outlet temperature rise, including the organism, the bottom equidistance of organism installs a plurality of silencing mechanism, the silencing mechanism is used for reducing the noise of air outlet, the bottom equidistance of organism installs a plurality of cover mechanism, the cover mechanism is used for the size of the size of the area of covering, the silencing mechanism includes the long hollow board, the long hollow board equidistance is installed in the bottom of organism, the bottom fixed connection of long hollow board has the supporting plate, the outer wall adjacent side fixed connection of supporting plate has the long rod. In the utility model, through piston rod reciprocating movement, compressed air and slowly discharge, reduce the noise frequency, thereby avoided the problem that the air conditioning air outlet wind force will produce bigger noise when blowing, the personnel body in the air conditioning surrounding area for a long time will produce the problem of discomfort.

The utility model discloses a back plate assembly and display equipment, the back plate assembly comprises a back plate body, a rear shell, a computer module and a heat dissipation device, the rear shell comprises a bottom plate and a side plate which are connected, the side plate is connected with the back plate body, the side plate is matched with the bottom plate and the back plate body to define a mounting cavity, and the side plate is provided with an air outlet communicated with the mounting cavity; the computer module is accommodated in the mounting cavity; the heat dissipation device is provided with an air duct, an air suction port and an air exhaust port, the air suction port and the air exhaust port are communicated with the air duct, the heat dissipation device is connected with the backboard body, the air suction port is opposite to and communicated with the air outlet, and the heat dissipation device is used for driving airflow exhausted from the heat dissipation device to flow into the air duct through the air outlet and the air suction port in sequence and to be exhausted from the air exhaust port. According to the technical scheme, the heat dissipation efficiency of the computer module can be improved, so that the temperature of the computer module is reduced, and normal operation of the computer module is guaranteed.

The utility model discloses a water heating type tail gas energy-saving heat exchanger, relates to the technical field of energy-saving heat exchangers, and aims to solve the problems that when an energy-saving heat exchanger in the prior art is used on tail gas, dust in the tail gas is accumulated at an inlet, so that the inlet is easily blocked, and the air inflow is influenced. An air inlet pipe is arranged on the end face of one side of the shell, an exhaust pipe is installed on the end face of the other side of the shell, an exchanger is installed in the shell, a water inlet pipe is arranged on one side of the upper surface of the shell, and a water drainage pipe is arranged on the other side of the upper surface of the shell. The air inlet pipe and the exhaust pipe are arranged in the air inlet pipe, the connector is arranged in one side of the air inlet pipe and one side of the exhaust pipe, a threaded groove is formed in the surface of the connector, the connector is in threaded connection with the interior of the air inlet pipe and the interior of the exhaust pipe through the threaded groove, and a filter screen is installed in the connector; the mounting frames are arranged on the two sides of the lower surface of the shell, and the mounting frames are in a T shape.

The invention relates to the technical field of vehicle heat management, in particular to a cold and hot channel coupled intelligent heat pump control system which comprises an air conditioning system refrigerant loop, a power cooling loop and a battery heat management loop. The air conditioning system refrigerant loop comprises an external condenser, an external condenser expansion valve, a Chiller expansion valve, a Chiller, an electric compressor, a gas-liquid separator, a refrigerant four-way valve, a throttling valve, an evaporator, an evaporator expansion valve and an internal condenser which are sequentially connected. According to the intelligent heat pump control system with coupled cold and hot channels, a high-temperature and high-pressure gaseous refrigerant is subjected to two refrigerant processes in a heat pump mode, a lower enthalpy value can be achieved, an inlet and an outlet of an external condenser have a larger enthalpy difference, and therefore the heat absorption capacity of the external condenser is improved; and the air outlet temperature of the air conditioning box can be greatly increased through two times of temperature rise.

The invention relates to the technical field of air conditioners, particularly provides an air conditioning system and a control method thereof, and aims to solve the problem of how to ensure the heating effect of an air conditioner under the condition of frequency reduction operation of the air conditioner. In order to achieve the purpose, a phase change material, a heat storage channel and a heat exchange channel are arranged in a heat storage device in the air conditioning system, the heat storage channel and the heat exchange channel do not communicate with each other, and the heat storage channel and the heat exchange device form a heat storage loop, so that a first refrigerant in the heat exchange device can exchange heat with a first refrigerant in the heat storage channel; and heat generated by the driving mechanism can be stored in the phase change material. The two ends of the heat exchange channel are arranged on the inlet side of the evaporator, so that a heat exchange branch is formed, a second refrigerant enters the heat exchange branch before entering the evaporator, the second refrigerant in the heat exchange branch can absorb heat released by the phase change material, the temperature of the second refrigerant is increased, the evaporation temperature of the evaporator can be increased, and the heat exchange efficiency of the evaporator is improved. And the heating effect of the air conditioner can still be ensured under the condition that the air conditioner runs under the reduced frequency.

The invention discloses a coal-fired boiler exhaust smoke waste heat recycling system and a working method. The working method comprises the steps that a bypass flue is led out from an inlet flue of an air pre-heater to an outlet flue of the air pre-heater; a bypass flue gas heat exchanger high-temperature section and a bypass flue gas heat exchanger low-temperature section are arranged on the bypass flue, and the bypass flue gas heat exchanger high-temperature section is communicated with the steam turbine regenerative system through a high-temperature section heating water supply water inlet pipeline and a high-temperature section heating water supply water return pipeline; the low-temperature section of the bypass flue gas heat exchanger is communicated with a steam turbine regenerative system through a low-temperature section heating condensed water inlet pipeline and a low-temperature section heating condensed water return pipeline; a tail flue gas heat exchanger high-temperature section and a tail flue gas heat exchanger low-temperature section are arranged on the flue; a primary air heater and a secondary air heater are additionally arranged on the air duct; and an internal circulating water pipeline is connected between the high-temperature section of the tail flue gas heat exchanger and the primary air heater as well as between the low-temperature section of the tail flue gas heat exchanger and the secondary air heater.

The utility model relates to a moisture-proof turnover device for electronic components, which comprises a box body with a large-capacity storage space, a drying component, a temperature control component and a driving component, wherein the drying component, the temperature control component and the driving component are arranged at the bottom of the box body, the temperature control component is used for heating airflow dehumidified and dried by the drying component, and the driving component is used for generating airflow directionally flowing into the box body; a plurality of bearing plates are arranged on two opposite side walls of the box body at intervals in a staggered manner so as to define a snakelike ascending flow channel for airflow to directionally flow in the box body; supporting columns are arranged on the side face of the periphery of the box body at intervals, and a guiding exhaust assembly penetrates through the top of the box body. According to the utility model, impurities such as dust and water vapor on the surface of the electronic component can be effectively taken away through directional flowing of hot air flow, so that the cleanliness of the electronic component stored in the box body is improved.

The invention discloses a control method of a heat pump system, the heat pump system and a storage medium. The heat pump system comprises a main refrigerant path and a branch refrigerant path, the main refrigerant path comprises an indoor unit and an outdoor heat exchanger, the indoor unit comprises an indoor heat exchanger and a first control valve, and the branch refrigerant path comprises an energy storage device and a second control valve. The first control valve is controlled to operate at the opening degree smaller than the first preset opening degree, the second control valve is controlled to operate at the opening degree larger than the second preset opening degree, and the high-pressure temperature of the heat pump system is obtained; determining a target rotating speed of an outdoor fan corresponding to the outdoor heat exchanger according to the high-pressure temperature; controlling the outdoor fan to operate according to the target rotating speed; wherein the preset operation state comprises the fact that the indoor unit is in the refrigeration state and in the preset air feeling mode, and the air outlet speed, corresponding to the preset air feeling mode, of the indoor unit is smaller than the preset air speed. The invention aims to reduce the condensation risk of the indoor unit and improve the operation stability of the system.

The invention provides a vehicle air conditioning box, a vehicle air conditioning system and a control method thereof.The vehicle air conditioning box comprises a box body shell, the box body shell is provided with an inner space, a main heat exchange air duct is formed in the inner space, and an air inlet and an air supply outlet are formed in the box body shell; an in-vehicle heat exchanger and an in-vehicle fan corresponding to the in-vehicle heat exchanger are arranged in the main heat exchange air duct, an inlet of the air return duct is controllably communicated with an air outlet side space of the in-vehicle heat exchanger, and an outlet of the air return duct is communicated with an air inlet side space of the in-vehicle heat exchanger. The air inlet side space and the air outlet side space are both located in the main heat exchange air duct. The air return duct is arranged on the air conditioning box, so that part of airflow subjected to heat exchange with the in-vehicle heat exchanger can be guided into the air inlet side space of the in-vehicle heat exchanger to enter the in-vehicle heat exchanger again for secondary heat exchange, and it is guaranteed that the air outlet temperature of the air conditioning system can reach the temperature value set by a user; and the use comfort and the satisfaction degree of the user are improved.

The invention discloses a non-metallic material plane heating device, including a heating element assembly and an air duct structure assembly; the heating element assembly is fixed on the air duct structure assembly; the heating element assembly is composed of a non-metallic conductive heating material, a high temperature adhesive and a high temperature resistant insulating material mixed and prepared according to the resistance value; the non-metallic conductive heating material includes graphene and PI carbon fiber, and the heating temperature is greater than 200°C; the air duct structure assembly has two mutually insulated conductive silver electrodes; the heating element assembly is connected to the conductive silver electrode of the air duct structure assembly; the heating element assembly is sequentially provided with an insulating protective layer, a heating layer and an insulating fixing layer; the thickness of the heating layer is 0.001 to 1 mm; the heating temperature of the heating layer can be adjusted from room temperature to 600°C; the heating element assembly converts electrical energy into thermal energy. Moreover, the air can fully contact the heating surface of the non-metallic conductive heating material, the wind speed is faster, and the heat is increased more; the heat conversion efficiency is high, the heat loss is small, and energy is saved.

The invention belongs to the technical field of projection equipment, and particularly relates to DLP 3D projection equipment which comprises a projector body, a lens is fixedly connected to the middle of the end of the projector body, heat dissipation grooves symmetrical about the lens are formed in the end of the projector body, and two auxiliary heat dissipation assemblies are symmetrically arranged on the side wall of the projector body. The projector comprises a projector body, a lens is arranged on the projector body, a protective cover is slidably connected to the lens, conveying assemblies are symmetrically arranged on the two sides of the protective cover, cotton strips are clamped to the end of the protective cover, and a supporting frame is rotatably connected to the side wall of the projector body. And air flows to the air outlet cover through the air guide cover and is blown to the heat dissipation groove from the air outlet cover, so that on one hand, heat at the heat dissipation groove is blown to the protective cover, on the other hand, the heat dissipation efficiency of the heat dissipation groove is improved, and the internal temperature of the projector main body is prevented from being too high.

The invention is suitable for the technical field of air conditioner control, and provides an air conditioner control device, system and method and a computer program product, and the method comprises the steps that the air dew point temperature of an indoor unit is determined, the fan output capacity of the indoor unit is improved under the condition that the air dew point temperature of the indoor unit meets the preset temperature condition, and in addition, the fan output capacity of the indoor unit is improved. And under the condition that the fan output capacity of the indoor unit meets the preset fan output condition, the opening degree of a water outlet valve of the outdoor unit is adjusted according to the water outlet temperature of the outdoor unit. The temperature of the indoor unit can be increased by improving the fan output capacity of the indoor unit, the indoor unit is prevented from generating condensation water, and under the condition that the fan output capacity of the indoor unit meets the preset fan output condition, the opening degree of the water outlet valve of the outdoor unit is adaptively adjusted according to the water outlet temperature of the outdoor unit, and the condensation prevention effect is improved.

This utility model discloses a multi-functional blow-and-vacuum integrated machine, including a housing, a fan assembly, a heating assembly, and a suction accessory. The housing has an air inlet, an air outlet, and an air duct. The air inlet and the air outlet are located at opposite ends of the housing, and the air duct extends directly from the air inlet to the air outlet. The fan assembly is located within the air duct. The heating assembly is located within the air duct and between the fan assembly and the air outlet. The suction accessory has a suction port. The suction accessory is detachably connected to the housing, allowing the multi-functional blow-and-vacuum integrated machine to have a suction mode where the suction accessory is installed in the housing and the suction port is connected to the air inlet. This utility model's technical solution can achieve blow-and-vacuum while simultaneously solving the problem of low suction power caused by insufficient motor rotation speed during reverse rotation.

The invention relates to the technical field of air conditioners, particularly provides an air conditioning system and a control method thereof, and aims to solve the problem of how to improve the heating effect of an air conditioner under the condition of not increasing power consumption. In order to achieve the purpose, a first heat exchange device in the air conditioning system is arranged on a driving mechanism, so that a first refrigerant in the first heat exchange device can exchange heat with heat generated by the driving mechanism, and then the temperature of the first refrigerant is increased. The first heat exchange device is arranged on the evaporator, the second heat exchange device is arranged on the evaporator, and the first heat exchange device and the second heat exchange device form a first refrigerant loop, so that a first refrigerant in the first heat exchange device can exchange heat with a first refrigerant in the second heat exchange device, the second heat exchange device can heat the evaporator, and the temperature of a second refrigerant in the evaporator is increased; and therefore, the heating effect of the air conditioner can still be ensured under the condition that the power consumption of the air conditioner is not increased.

The invention relates to a heat preservation structure for reducing piston wind in a tunnel in a cold region. The heat preservation structure comprises an unpowered ventilation system, a heating system, a drainage system and a temperature control system. The unpowered ventilation system comprises a plurality of ventilation pipes which are obliquely crossed with the tunnel ballast bed; one end of the ventilation pipe penetrates through the heating system, and the other end penetrates through the tunnel ballast bed; the heating systems are arranged at equal intervals in the longitudinal direction of the tunnel and comprise rectangular concrete cavities arranged under a tunnel ballast bed, heat preservation plates laid on the inner surfaces of the rectangular concrete cavities and electric heating wires fixed to the inner surfaces of the heat preservation plates. The drainage system comprises transverse water-permeable blind pipes, longitudinal water-permeable blind pipes and a central ditch; one end of the transverse water-permeable blind pipe is connected with a longitudinal water-permeable blind pipe of a tunnel wall foot, the other end of the transverse water-permeable blind pipe is connected with a central ditch, and the transverse water-permeable blind pipe is longitudinally arranged along the tunnel; the central ditch penetrates through the heating system along the longitudinal direction of the tunnel; the temperature control system comprises a power distribution control box and a temperature sensor. The aim of cold protection and heat preservation of the tunnel in the cold region can be achieved.