59results about How to "Reduce the feeling of wind" patented technology

A dual-temperature radiation heat pump type room air conditioner capable of processing fresh air comprises an air compressor. The air compressor is connected with an outdoor heat exchanger through a four-way reversing valve, the outdoor heat exchanger is connected with a metal radiation plate and an induction-type fresh air processor which are connected in parallel, a valve combination is arranged on a connecting pipeline, and the metal radiation plate and the induction-type fresh air processor are connected with the four-way reversing valve and the outdoor heat exchanger through an ejector and a three-way valve backwards. The refrigerant flow path is changed through the four-way reversing valve, the three-way valve and the valve combination to enable the metal radiation plate and the induction-type fresh air processor to serve as a parallel evaporator in the summer working condition and to serve as a parallel condenser and provide the defrosting working condition in the winter working condition. The dual-temperature radiation heat pump type room air conditioner meets the cold source requirement for temperature and humidity independent control in the summer working condition of the single air compressor, the dual advantages of radiation and fresh air heat / cold supplying are adopted in the winter working condition and the summer working condition, the quality of indoor air can be improved, the thermal comfort can be improved, secondary heat exchanging losses can be avoided and the energy utilization rate can be increased.

The invention discloses a plenum chamber capable of achieving balanced ventilation, comprising a chamber body, wherein an air inlet hole is formed in the lateral wall of the chamber body, a pore plate and a clapboard are arranged in the chamber body, a plurality of orifices are formed in the pore plate, the pore plate and the clapboard divide the internal space of the chamber body into three areas, including an air inlet area, a first turbulence area and a second turbulence area; the air inlet hole is formed in the lateral wall of the air inlet area, a vertical air outlet hole is formed in the lateral wall of the first turbulence area, a horizontal air outlet hole is formed in the lateral wall of the second turbulence area; and air enters the air inlet area via the air inlet hole, respectively enters the first turbulence area and the second turbulence are via the pore plate and are respectively sent out from the vertical air outlet hole and the horizontal air outlet hole. According to the invention, wall-attached jetting uniformity in the horizontal direction and the vertical direction can be improved, the capability of outlet airflow in mixing with indoor pollution (hot air) is weakened, and air sending jetting distance is increased, and blowing feeling of sending airflow to persons is reduced.

The invention provides operational control method and device, an air conditioner and a computer readable storage medium. The operational control method comprises the steps of detecting figure featureinformation and position distribution information of a user in a target area; determining whether an upper inner unit air outlet assembly is controlled to narrow-angle supply air to the target area ornot according to the figure feature information and the position distribution information; and if controlling the upper inner unit air outlet assembly to narrow-angle supply air to the target area, controlling a lower air outlet switching mechanism to cover a lower air outlet, so that the air outlet volume of a lower inner unit air outlet assembly is reduced, wherein the distance between the upper inner unit air outlet assembly and the bottom part of the air conditioner is larger than the distance between the lower inner unit air outlet assembly and the bottom part of the air conditioner; wind of the upper inner unit air outlet assembly is blown along the assigned direction and is scattered when arriving at the assigned distance; and the assigned distance corresponds to the rotate speed of the upper inner unit air outlet assembly. Through the technical scheme provided by the invention, an effect on regulating the temperature of the target area is improved, and the air blowing experience of a user is further improved.

The invention provides a convection and radiation combined heat exchange system, a heat exchange device and a control method, and relates to the technical field of heat pump air conditioning. The system comprises an indoor exchanger which further comprises first and second heat exchangers connected in parallel, the first heat exchanger is a convection heat exchanger or a radiation heat exchanger,and the second heat exchanger is a radiation heat exchanger or a convection heat exchanger; and the first and / or second heat exchangers are / is switched on / off to adjust the indoor temperature. The double heat exchangers are arranged to cool or heat an air conditioner, and the convection and radiation heat exchangers are used cooperatively to ensure the cooling or heating effect of the air conditioner. The radiation heat exchanger can be started independently according to practical needs, blowing in the using process can be reduced on the premise of cooling or heating, and a user can feel morecomfortable in the air conditioner using process.

The invention relates to a heat-storing and energy-saving window device coupled with a solar heat source. The heat-storing and energy-saving window device coupled with the solar heat source comprises a heat dissipation shutter. The heat-storing and energy-saving window device coupled with the solar heat source is characterized by further comprising a plate-type solar heat collector, a heating medium water pipeline and a phase-change material heat storage tank; the solar heat collector is of a plate-type structure and is installed on the upper portion of an outdoor lower window, the included angle between the heat collecting surface of the solar heat collector and the horizontal direction ranges from 10 degrees to 50 degrees, the length of the solar heat collector is the same as that of a window on which the solar heat collector is installed, and the width of the solar heat collector is one third to one second of the height of the window; the heat dissipation shutter comprises a water separator, heat dissipation water pipes, a water collector and heat conduction slats; the water separator and the water collector are horizontally arranged over and under the window on which the water separator and the water collector are installed respectively; the heat dissipation water pipes are evenly distributed between the water separator and the water collector, and each heat dissipation pipe is fixed with a heat conduction slat which can rotate by 360 degrees by taking the corresponding heat dissipation pipe as the axis.

The invention relates to a ventilation system based on an air and light complementary technology. An air inlet is internally provided with partition boards and is divided into multiple air channels. Any air channel of the air inlet is provided with a bladeless fan. An air draught fan blade is installed on a driving shaft in the air inlet, and the driving shaft is provided with a sealing plate. The periphery of a pipeline below the sealing plate is evenly provided with air holes, and a fresh air pipeline is arranged above the air inlet. An air valve is arranged below the air inlet, and the air valve is connected with a heat exchanger. The side face of the heat exchanger is provided with a used air pipeline which is connected with a solar heat collecting pipeline coaxial with the air draught fan blade. The solar heat collecting pipeline is connected with an exhaust fan, and the lower portion of the heat exchanger is connected with a volute cyclone. According to the ventilation system based on the air and light complementary technology, a solar cell panel can be used for power generating, energy accumulating, heating and exhausting, authigenic ventilation is formed, pollution is avoided, sustainability is achieved, and zero-energy-consumption and high-efficiency ventilation can be achieved.

The invention relates to the technical field of indoor heating and ventilation, in particular to a control method of an intelligent comfortable cooling and heating household air conditioning system. The control method comprises the following steps: in a heating mode, valves of a capillary network and a ground temperature adjusting pipe network are controlled to be opened through a valve controller for heating; in a refrigerating mode, the valves of the capillary network and the ground temperature adjusting pipe network are controlled to be opened, meanwhile, water supply at the set temperature is controlled and provided through a water mixing temperature adjusting controller for cooling; when the control result of the capillary network and the ground temperature adjusting pipe network cannot meet the set requirement, a fan coil is opened in a linkage mode; and when the control result of the capillary network and the ground temperature adjusting pipe network can meet the set requirement, the temperature is controlled by controlling a proportional integral valve through the water mixing temperature adjusting controller in the heating mode, and the temperature is controlled by opening and closing the valves of the capillary network and the ground temperature adjusting pipe network in the refrigerating mode. Radiation temperature adjustment is mainly adopted, the temperature can be rapidly adjusted, the blowing feeling is reduced, and the comfort degree is improved.

The invention relates to a multi-working-mode heat pump heat recovery type fresh air ventilator. The fresh air ventilator comprises a first air duct, a second air duct and a refrigerant loop. An air return port and an air exhaust port are formed in the first air duct; an air supply port and a fresh air port are formed in the second air duct; an air mixing air door enabling the first air duct to communicate with the second air duct is arranged between the first air duct and the second air duct; an air exhaust fan and an air supply fan are arranged in the air exhaust port of the first air duct and the air supply port of the second air duct correspondingly; and the refrigerant loop comprises a compressor, a four-way reversing valve, an exhaust coil pipe, a supercooling coil pipe, a first throttling device, a reheating coil pipe, a second throttling device and an air supply coil pipe which are connected in sequence. Compared with the prior art, the four modes of a summer high-load refrigeration and dehumidification mode, a summer low-load refrigeration and dehumidification mode, a transition season internal circulation mode and a winter heating mode are achieved through opening and closing of the air door and flow path conversion, all-season fresh air supply is met, and the multi-working-mode heat pump heat recovery type fresh air ventilator is suitable for being used under variousworking conditions throughout the year.

The invention relates to an all-working-condition heat-pump heat recovery type fresh air ventilator with multiple reheating modes. A reheating coil and a bypass pipeline are particularly arranged in the fresh air ventilator, condensation heat and / or supercooling heat of a refrigerant in a steam compression cycle can be selected for reheating fresh air through opening and closing of an air door andflow path conversion, the multiple reheating modes of supercooling reheating, condensation reheating, semi-condensation reheating and the like are provided for a unit to select under different loadsof a refrigeration and dehumidification mode in summer, and it can be guaranteed that an air outlet temperature is higher than a set value. Compared with the prior art, the fresh air ventilator can beadjusted as required under different loads in summer, the requirement for the air outlet temperature can be met all the time, and particularly the requirement that the air outlet temperature of the fresh air dehumidifier is not lower than 22 DEG C in the new national standard is met; and the heat-pump heat recovery type fresh air ventilator can match all-year working conditions in a targeted andcomprehensive mode, 14 operation modes including refrigeration and dehumidification in summer, heating in winter and internal circulation in transition seasons can be achieved, and the fresh air ventilator is more suitable for household all-year fresh air supply.

The invention aims to provide a ceiling fan for solving the problem of inlet and outlet air heat short circuit in traditional ceiling fans. The ceiling fan comprises a bladeless fan component serving as an air blowing mechanism of the fan. The bladeless fan structure is applied to the ceiling fan; and the structural characteristics that air inlet and outlet directions of the bladeless fan are staggered in the space, the distance between the air inlet and the air outlet is far, and the mutual interference of inlet and outlet air flows is small are fully utilized, so that the problem of inlet and outlet air heat short circuit in the traditional ceiling fans is effectively prevented.

The invention relates to an air conditioning type extractor hood air channel which comprises a lampblack channel, an air conditioning channel and an air guide baffle. A lampblack inlet is formed in one end of the lampblack channel. The air conditioning channel and the lampblack channel are arranged side by side and do not communicate, and an air outlet is formed in the end, on the same side of the lampblack inlet, of the air conditioning channel. The air guide baffle is arranged on the air outlet and provided with a plurality of air guide openings. The flow area of the air guide opening close to one side of the lampblack channel is smaller than that of the air guide opening away from one side of the lampblack channel. The invention further relates to an air conditioning type extractor hood. According to the air conditioning type extractor hood air channel, air supply heat exchange does not need to be carried out on a whole kitchen, the temperature condition of the position where a kitchen operator is located can be adjusted directly and fast, lampblack is effectively isolated, and air quality is improved; and the wind feeling is small, use is comfort, and energy saving and environmental protection are achieved.

The rotary adjusting, personalized air conditioning air blast end device belongs to the heat air conditioning field. It features in the stair type rotary adapter between the wind blast end and reducing wind pipe, the conic section of the horizontal profile of the inner cavity of the wind blast end, and linear design of the longitudinal profile, with wind shroud equipped at each exhaust outlet of the wind blast end. It shows that the exhaust resistance at the wind blast end reduces obviously, driven by the 800mA / 12V small scale draught fan, average exhausting speed reaching above 4m / s, fairly enough to satisfy the air conditioner's demand for new wind volume. Meanwhile, the conic section of the horizontal profile and the linear design of the longitudinal profile of the exhaust end inner cavity and wind shroud for each outlet greatly reduce the flowed out exhaust, effectively lowering the wind blowing feel of the air conditioner user by playing the function of air diffusion.

The invention discloses an air duct device and a passenger car, relates to the field of air flow regulation, and aims to realize air outlet in a vortex manner. The air duct device comprises a first air duct, a second air duct, an elastic piece and a switching assembly. The first air duct is provided with an air inlet, a first air outlet and a second air outlet. An inlet and an outlet of the second air duct communicate with the first air duct, the first communicating position of the inlet and the first air duct is located between the air inlet and the first air outlet, and the second communicating position of the outlet and the first air duct is located between the first air outlet and the second air outlet. The elastic piece is mounted in the first air channel and located between the first communication position and the second communication position. The switching assembly is mounted in the first air duct and is constructed to switch the position through air flow in the first air duct so as to block one of the first air duct and the inlet. According to the air duct device provided by the technical scheme, vortex airflow is generated, and integral bathing type air supply is formed.

The invention relates to a control method for indoor air supply of an air conditioner. When the air conditioner is in a refrigeration mode, the control method for indoor air supply of the air conditioner comprises the following steps that S1', whether Ts-Te is larger than or equal to delta T1' or not is judged; S2', when the Ts-Te is larger than or equal to delta T1', at least the following threeparameters including the compressor frequency F, the inner fan rotating speed V and the air outlet cross section area F of an air conditioner air outlet are adjusted, and the air conditioner enters alow-disturbance air supply mode; and if the Ts-Te is not larger than delta T1', the original normal air supply mode of the air conditioner is maintained; S3', when the air conditioner enters the low-disturbance air supply mode, whether Te-Ts is larger than or equal to delta T2' or not is judged; and S4', when the Te-Ts is larger than or equal to delta T2', the air conditioner exits from the low-disturbance air supply mode and returns to the original normal air supply mode; and if the Te-Ts is not larger than delta T2', the air conditioner continues to keep running in the low-disturbance air supply mode. After the room where the air conditioner is positioned reaches the room set temperature, the air conditioner implements the low-disturbance air supply mode, the air supply intensity of theair conditioner to people is reduced, the blowing feeling of the air conditioner to people is reduced, and the comfort of the air conditioner in the using process is improved.

The invention provides an operation method and device, an air conditioner and a computer readable storage medium. A shell of the air conditioner is provided with an air outlet, and three air guide assemblies are sequentially arranged at the air outlet in the height direction of the shell. A control method of the air conditioner comprises the following steps: determining the operation mode of the air conditioner; and controlling the three air guide assemblies to swing horizontally to three angles respectively according to the operation mode to perform surrounding type air supply on a target area of the air conditioner. By use of the technical scheme, the operation power consumption of the air conditioner is reduced, the air supply comfort of the air conditioner is improved, and the heat exchange efficiency of the air conditioner is enhanced.

The invention discloses a direct seawater radiation cooling and heating type environment control system and a control method, the direct seawater radiation cooling and heating type environment controlsystem comprises a refrigerating module, a heating module, a radiating module, a water source module, a fresh air module and a control cabinet; the provided direct seawater radiation cooling and heating type environment control system and the control method provides create a healthy comfortable energy-saving artificial environment for people working and living in a cabin for long: a radiation type air conditioner uses seawater as a cooling or heating medium, the environment with proper temperature and humidity is provided for the cabin, the temperature and the humidity are independently controlled, the energy source is saved, the blowing feeling is also reduced, the noise is reduced, the requirement of people on comfort is met, in addition, the system structure is simplified, and the costis saved.

The invention discloses a radiation and convection combined micro-environment control device and control method, and belongs to the field of research of ventilation manners, airflow distribution and human body comfort. The device sequentially comprises a radiation coil pipe, fans, an air pipe, a horizontal air supply grille, an activated carbon filter, a carbon dioxide filter, an electric heatingdevice, a personalized air supply tail end and other components, and the above components are sequentially connected into a whole to form the micro-environment control device. According to the micro-environment control device, the blowing feeling is avoided through the radiation coil pipe, the quality of air inhaled by the human body is improved through artificial fresh air, and the requirements of different human bodies for thermal comfort can be met.

The invention discloses a train sleeper capillary network radiation air-conditioning system and belongs to the technical field of train air conditioning. The air-conditioning system comprises a trainsleeper carriage 1, a cold / hot water unit 2, an all-air air-conditioning unit 3, a ventilation device 4, a sleeper area 5, a corridor area 6, an air supply opening 7, an air return opening 8, a watersupply main pipe 9, a water return main pipe 10, a capillary network 11, a radiation plate 12, heat insulation cotton 13, a bed plate 14, outside-train fresh air 15, fresh air 16, air conditioner supplied air 17, an in-carriage return air 18 and a flow controller 19. The train sleeper capillary network radiation air-conditioning system adopts a capillary network radiation air-conditioning system and an all-air air-conditioning system to control the environment in the same section of a sleeper carriage, the temperature field in the same section of train sleeper carriage can be subdivided, the different requirements of different passengers in the same section of carriage on the temperature can be met, the air-conditioning blowing feel can be reduced, the air-conditioning noise can be reduced, the temperature field distribution in the sleeper area can be more uniform, and the air-conditioning energy consumption can be greatly reduced.

The IJV and DPV combined indoor thermal environment building system comprises a collision jet flow air supply pipe and an air-duct-free personalized air supply device, the collision jet flow air supply pipe is installed on any empty wall of a room, an air inlet of the collision jet flow air supply pipe is connected with an air conditioning system air supply pipe, and an air outlet of the collision jet flow air supply pipe is close to the ground. The air-duct-free personalized air supply device is arranged on the table, the table top divides the air-duct-free personalized air supply device into an upper-section pipeline and a lower-section pipeline, an air supply panel is arranged at an outlet of the upper-section pipeline, a pipeline fan is arranged in the lower-section pipeline, and the air supply amount of the pipeline fan is adjustable. According to the invention, personalized air supply and no air channel are combined for use, and the blowing feeling and the temperature difference between the head and the foot are avoided, so that the possible problems when the IJV is used in an office are solved.

The invention provides an attached jet flow tail end air supply device suitable for a column / wall. The attached jet flow tail end air supply device comprises a shell, wherein a flow guide hole plate and a partition plate are arranged in the shell; the flow guide hole plate is horizontally arranged; the partition plate is located below the flow guide hole plate and vertically arranged; the inner space of the shell is divided into a flow stabilizing area, an air inlet area and an air outlet area through the flow guide hole plate and the partition plate; an air inlet is formed in the position, inthe air inlet area, of the shell; and the bottom of the air outlet area vertically extends downwards to form a flow guide section. An air supply opening is formed in the flow guide section. Accordingto the attached jet flow tail end air supply device, the flowing distance of air in the shell is increased, the proportion of converting dynamic pressure into static pressure is increased, and the air outlet uniformity is improved; and meanwhile, due to the fact that the flow speed of air supply jet flow close to the column or the wall face is large, the static pressure is small, the static pressure away from the column or the wall face is large, the attaching effect is formed on the side wall through air supply under the action of the pressure difference, the air outlet range is prolonged, and therefore the mixing degree of air outlet airflow and indoor hot air is weakened, the air supply jet flow distance is increased, and the blowing feeling of the air supply airflow to personnel is reduced.

The invention discloses an oxygen supply and carbon emission bedside air supply device. The oxygen supply and carbon emission bedside air supply device comprises an air treatment box, a carbon discharge box, an oxygen generator and an air outlet frame, wherein the air treatment box and the carbon discharge box are installed in a bed head, the oxygen generator is arranged outside the room and the air outlet frame is arranged on the side surface of the bed head and above a bed surface. The air outlet frame, of a hollow arc-shaped structure, is provided with an electrically-adjusted spherical nozzle, and the air treatment box is internally provided with an air mixing chamber, a spraying chamber and a first heating chamber, a surface cooler and a first noise reduction fan in sequence. The carbon discharge box is internally provided with a telescopic support and a carbon removal case. According to the oxygen supply and carbon emission bedside air supply device, the air quality near the bedside can be effectively improved, and oxygen enrichment and purification treatment can be carried out on the air, thus providing a better sleep environment for users.

The invention discloses a water-cooling mechanical refrigeration-corrugated plate pipe indirect evaporation cooling compound-type window type air conditioner which comprises an air conditioner housing, wherein an air inlet and an air outlet are respectively formed in the two opposite side walls of the air conditioner housing; an air filter, a primary air fan, a corrugated plate pipe type indirect evaporation cooler and a direct evaporation cooler are sequentially arranged in the air conditioner housing according to the flow direction of air entering the air conditioner housing; the corrugated plate pipe type indirect evaporation cooler is internally and additionally provided with a condenser and a compressor; the direct evaporation cooler is internally and additionally provided with an evaporator; the condenser is sequentially connected with the compressor, the evaporator and a throttling valve through pipelines to form a closed loop, namely a mechanical refrigeration system; a secondary air fan is arranged at the upper part of the corrugated plate pipe type indirect evaporation cooler; and a secondary air outlet is formed in the upper wall of the air conditioner housing corresponding to the secondary air fan. The water-cooling mechanical refrigeration-corrugated plate pipe indirect evaporation cooling compound-type window type air conditioner is high in refrigeration efficiency, and can improve the quality of indoor air obviously.

The invention relates to an air conditioner exhausted-air mixing device and an air conditioner. The air conditioner exhausted-air mixing device comprises an air mixing component, and a hollow chamberis formed in the air mixing component. An air mixing channel is formed in the chamber wall of the hollow chamber and communicates with the hollow chamber. The air conditioner exhausted-air mixing device and the air conditioner provided by the embodiment of the invention have the beneficial effects that by the arrangement of the air mixing component, the hollow chamber and the air mixing channel, the exhausted-air of the air conditioner is changed from direct blow exhausted-air to air-mixing exhausted-air; the blowing feeling of the air conditioner exhausted-air is effectively reduced, and theproblem of non-uniform exhausted-air temperature is solved; the exhausted air is more comfortable, and the usage experience of users is improved.

The invention relates to a radiation convection type heat exchanger and an air-conditioner provided with the same. Specifically, the radiation convection type heat exchanger comprises a radiation heatexchange portion and a convection heat exchange portion, wherein the radiation heat exchange portion is in a cylinder shape with openings formed in the two ends, and arranged to absorb heat or refrigerant from the inner wall face of the radiation heat exchange portion, and radiate the heat or the refrigerant outwards from the outer wall face of the radiation heat exchange portion. The convectionheat exchange portion is arranged on the inner side of the radiation heat exchange portion and arranged to generate the heat or the refrigerant, transmit the heat or the refrigerant to air flowing through the inner side of the radiation heat exchange portion, and pass the heat or the refrigerant to the inner wall face of the radiation heat exchange portion. The convection heat exchange potion comprises a refrigerant pipeline and multiple heat dissipating fins arranged on the refrigerant pipeline. Each heat dissipating fin is a pin-shaped fin. According to the radiation convection type heat exchanger, on the premise of ensuring the heating or refrigerating ability, blowing feeling of the human body is reduced, and heat comfort of the human body is improved.

The invention relates to a radiation convection type heat exchanger and an air conditioner with the radiation convection type heat exchanger. Specifically, the radiation convection type heat exchangercomprises a radiation heat exchange part and a convection heat exchange part; the radiation heat exchange part is a cylinder with openings in two ends and is configured to absorb heat or cold from aninner wall surface of the radiation heat exchange part, and radiate the heat or cold outward from an outer wall surface of the radiation heat exchange part; the convection heat exchange part is arranged on the inner side of the radiation heat exchange part, and is configured to generate heat or cold, transfer the heat or cold to the air which flows through the inner side of the radiation heat exchange part, and transfer the heat or cold to the inner wall surface of the radiation heat exchange part; the convection heat exchange part comprises a refrigerant pipeline and a plurality of radiatingfins that arranged on the refrigerant pipeline; and each radiating fin is a flat sheet fin. The radiation convection type heat exchanger and the air conditioner with the radiation convection type heat exchanger can reduce the wind blowing feeling of a human body and improve the thermal comfort of the human body on the premise of ensuring heating or refrigerating capacity.

The invention discloses a cooling system based on an evaporative cooling technology. The cooling system comprises a cold water part and a heat exchange part, wherein the cold water part comprises an air inlet pipe, an air cooler, a water tank and a water pipe which are sequentially connected; the bottom of the water tank is connected with an inlet of a water distributor through a pipeline; an outlet of the water distributor is connected with a pipeline a and a pipeline b; the pipeline a penetrates a heat release part of the air cooler to be connected with a water collector; the pipeline b is connected with the heat exchange part; a plurality of nozzles are connected to the upper part in the water tank; filler is connected in the water tank; the plurality of nozzles are sequentially connected with a water pump and a water collector water outlet through spraying pipes; the heat exchange part comprises a housing and a cold water channel in the housing; one end of the cold water channel isconnected with the water distributor through the pipeline b, and the other end of the cold water channel is connected with the water collector; and an air supply opening is formed in the bottom of the housing. According to the cooling system, cold water is prepared through the environment-friendly, economical and efficient evaporative cooling technology, low energy consumption and a special tabletop air supply manner are achieved, the air blowing feeling is eliminated, and the human body comfort degree is improved.

The invention relates to a radiation convection type heat exchanger and an air conditioner with the same. Specifically, the radiation convection heat exchanger comprises a radiation heat exchange partwhich is in a cylindrical shape with two open ends and configured to absorb heat or cold from the inner wall surface of the radiation heat exchange part and outwards radiate heat or cold from the outer wall surface of the radiation heat exchange part, and a convection heat exchange part which is arranged on the inner side of the radiation heat exchange part and configured to generate heat or cold, transfer the heat or cold to air flowing through the inner side of the radiation heat exchange part and transfer the heat or cold to the inner wall surface of the radiation heat exchange part; the convection heat exchange part comprises a refrigerant pipeline which is provided with a main inlet pipe, a main outlet pipe and a plurality of refrigerant channels extending in the axial direction of the radiation heat exchange part; and one end of each refrigerant channel communicates with the main inlet pipe, and the other end of each refrigerant channel communicates with the main outlet pipe, sothat the multiple refrigerant channels are connected in parallel. On the premise of ensuring the heating or refrigerating capacity, the blowing sense of a human body can be reduced, and the thermal comfort of the human body can be improved.