51results about How to "Guaranteed normal cooling" patented technology

The invention discloses a control method for an outdoor fan in refrigeration of a variable frequency multi-split air-conditioning unit, which comprises the key step that the operating wind level of the outdoor fan (2) is adjusted in real time through the overall consideration on outdoor environment temperature, the proportion of the number of started indoor units to the total number of indoor units, and condensing temperature. The control method can enable the operation frequency of the outdoor fan to be reasonable.

The invention discloses a control method of an outdoor fan during heating of a variable-frequency multi-connection type air conditioning unit. The control method comprises the following specific steps of a, measuring outdoor environment temperature; b, judging whether the outdoor environment temperature is less than or equal to 18 DEG C or not, if so, starting an outdoor fan (1) in high wind level, continuously running for 30 seconds and entering into step c; and if not, starting the outdoor fan (1) in a medium wind level, continuously running for 30 seconds and then directly entering into step d; c, regulating the wind level in which the outdoor fan (1) runs for once every 30 seconds according to the average value of the condensation temperature; and d, regulating the wind level in which the outdoor fan (1) runs for once every 30 seconds according to the average value of the condensation temperature. According to the control method disclosed by the invention, the frequency of the outdoor fan can run reasonably.

The invention discloses a blind window device for an air conditioner and the air conditioner. The blind window device for the air conditioner comprises the blind window device matched with the installation space of an air-conditioning outdoor unit and a vane control motor used for being connected with the air conditioner, wherein the blind window device comprises a vane fixing plate, a plurality of vanes arranged on the vane fixing plate, and a connecting rod connected with one ends of the vanes, and the vane control motor is connected with the connecting rod. The air conditioner comprises an air-conditioning indoor unit used for being installed indoors, an air-conditioning outdoor unit installation cover used for being installed outdoors, an air-conditioning outdoor unit arranged inside the air-conditioning outdoor unit installation cover, and the blind window device for the air conditioner. By means of the blind window device for the air conditioner and the air conditioner, air energy after heat transfer is discharged out of the blind window device rapidly, the heat conversion efficiency and the energy efficiency ratio of the air-conditioning units are improved, power consumption is lowered, and the air-conditioning units operate normally.

The invention discloses a multilevel air way air outlet system of a refrigerator. The system comprises a freezing chamber, a refrigerating chamber and an evaporator cavity; an air way cover plate and a draught fan support are arranged on the back of the freezing chamber, a plurality of air outlets re formed in the air way cover plate, an air returning opening is formed in the lower portion of the air way cover plate, a fan motor is arranged on the draught fan support, an air guide ring is arranged on the draught fan support, one side of the air guide ring is communicated with the evaporator cavity, and the other side of the air guide ring is provided with an air splitting guide groove communicated with the air outlets and the refrigerating chamber, a second air supply hole is formed in the air way cover plate, the air way cover plate protrudes in the direction of the freezing chamber in a manner of surrounding the local part of the second air supply hole to form a side air guide opening, and an air blocking cover is arranged on the second air supply hole. Through design of combination of multiple air openings, the temperatures of all areas of the freezing chamber of the refrigerator can meet the low-temperature freezing and storage requirements.

The invention relates to the technical field of refrigerators, in particular to a control method for a refrigerator. The control method for the refrigerator comprises the steps that different control modes are operated according to different environment temperatures, refrigeration of a refrigerating chamber is conducted preferably when the environment temperature is smaller than a set environment temperature value as well as when the environment temperature is not smaller than the set environment temperature value and the temperature in a freezing chamber is smaller than a set freezing temperature value, and refrigeration of a temperature-variable chamber is conducted after refrigeration of the refrigerating chamber is completed; and whether refrigeration of the refrigerating chamber is needed or not is monitored while refrigeration of the temperature-variable chamber is conducted, and a throttling mechanism of the freezing chamber is controlled to be connected with a freezing refrigeration circuit when both refrigeration of the refrigerating chamber and refrigeration of the temperature-variable chamber are not needed, so that independent refrigeration of the freezing chamber is conducted. When the environment temperature is larger than the set environment temperature value and the temperature in the freezing chamber is not smaller than the set freezing temperature value, refrigeration of the refrigerating chamber is conducted after the refrigerator operates in the initial operating mode. According to the control method for the refrigerator, a compressor operates under a small load condition, so that damage caused by liquid impact is avoided, the refrigerating speeds of all the chambers are guaranteed, and the system stability is improved.

The invention discloses a closet with a refrigerating function. The closet comprises a cabinet body and a refrigerating system, wherein the upper and lower parts of the cabinet body are both provided with accommodating areas; a refrigerating area is formed in the middle of the cabinet body; the refrigerating area is formed by a top plate, a base plate, and a left and right separation plates; the back surface of the cabinet body in the refrigerating area is provided with a back pack; a device cavity is formed between each separation and a corresponding side plate of the cabinet body; a transmission cavity is mounted on the lower part of the base plate; a screw rod is disposed in each device cavity; a movable bearing plate is arranged between the left and right separation plates; the top plate is hinged with an upper door and a hinge point is placed on the top of the upper door; and the base plate is hinged with a lower door and a hinge point is formed on the bottom of the lower door. The closet is equipped with a bearing area and a refrigerating area; the refrigerating area is divided into an upper temperature area and a lower temperature area via the bearing plate; a large gear drives a small gear to synchronously rotate, so an elevating block can rise at the same time, so the upper and lower temperature area sizes can be adjusted and the bearing plate cannot be deadly clamped.

The invention provides a two-tube heat recovery multi-split system and an air conditioning outdoor unit thereof. The air conditioning outdoor unit comprises a main circulation flow path and an enhanced-vapor injection flow path. The main circulation flow path comprises an enhanced-vapor injection compressor, a reversing device and an outdoor heat exchanger which are connected through pipelines, and two ends of the main circulation flow path are respectively communicated with an inlet and outlet of a refrigerant distribution device through a refrigerant output pipe and a refrigerant input pipe.The enhanced-vapor injection flow path comprises a flash evaporator and an outdoor throttling device, wherein the inlet of the flash evaporator is communicated with the refrigerant input pipe througha first pipeline, an air side outlet is connected with an air injection port of the enhanced-vapor injection compressor through a second pipeline, a liquid side outlet is connected with an input endof the outdoor heat exchanger through a third pipeline, and the outdoor throttling device is arranged on the third pipeline. By the adoption of the two-tube heat recovery multi-split system and the air conditioning outdoor unit thereof, the enhanced-vapor injection compressor technology is used and the flash evaporator and the outdoor throttling device are added, so that the two-tube heat recoverymulti-split system has a function of enhanced-vapor injection by heating, thereby obviously improving the low-temperature heating capacity and heating effect of the system.

The invention provides a novel vehicle air conditioner evaporator. The novel vehicle air conditioner evaporator comprises a header pipe system, an evaporation heat exchange device, a fin movable device, a condensate water processing system and a control system. The header pipe system is vertically placed. The evaporation heat exchange device is arranged in the middle of the header pipe system andprovided with flat pipes, louvered fins I, louvered fins II, auxiliary heat exchange cavities and wiping blocks. The flat pipes are transversely placed and connected with the header pipe system. Eachlouvered fin I and the adjacent louvered fin II form a V shape and are obliquely arranged between the corresponding adjacent flat pipes. The auxiliary heat exchange cavities and the wiping blocks arearranged on the louvered fins I and the louvered fins II. The fin movable device is connected with the flat pipes. The evaporation heat exchange device is connected with the condensate water processing system. The novel vehicle air conditioner evaporator is high in degree of automation and good in using effect, the vehicle air conditioner evaporator can be automatically cleaned, and the refrigerating effect of a vehicle air conditioner is improved.

The invention provides a two-tube heat recovery multi-split system and an air conditioning outdoor unit thereof. The air conditioning outdoor unit comprises a main circulation flow path, wherein the main circulation flow path comprises an enhanced-vapor injection compressor, a reversing device and an outdoor heat exchanger which are connected through pipelines; an enhanced-vapor injection flow path, which comprises an outdoor subcooler, an outdoor main throttling device and an outdoor auxiliary throttling device, wherein the outdoor subcooler is provided with a main path and an auxiliary path,an inlet of the main path is communicated with a refrigerant input pipe through a first pipeline, an outlet of the main path is respectively connected with an input end of the outdoor heat exchangerand the inlet of the auxiliary path through a second pipeline and a third pipeline, the outlet of the auxiliary path is communicated with an air injection port of the enhanced-vapor injection compressor through a fourth pipeline, the outdoor main throttling device is arranged on the second pipeline, and the outdoor auxiliary throttling device is arranged on the third pipeline. By the adoption of the two-tube heat recovery multi-split system and the air conditioning outdoor unit thereof, the enhanced-vapor injection compressor technology is used and the outdoor subcooler and the outdoor throttling device are added, so that the two-tube system has a function of enhanced-vapor injection by heating, and a low-temperature heating capacity of the system is obviously improved.

The invention relates to a machine with dual purposes of a refrigerator and a water heater, which can recycle waste heat discharged from a common refrigerator to heat domestic hot water. Hot water is stored in an insulating water tank which is above a refrigerator body. The system collects waste heat of the refrigerator in the insulating water tank by the thermal-siphon principle, and when water temperature of the water tank reaches a predetermined value, a temperature control electromagnetic valve of the system is opened automatically to pre-cool inflow water of a water cooled condenser. Then the cooled water enters the condenser so that the system can guarantee normal refrigeration of the system while effectively collecting waste heat of the refrigerator. The system has the advantages of simple structure, stable and reliable performance, low cost, efficiency and energy conservation.

The invention discloses a double-cold-source device combining air cooling compression refrigeration and evaporation refrigeration. A first outdoor unit heat exchanger of an exhaust fan is installed onan exhaust opening, a refrigerant outlet of the first outdoor unit heat exchanger is sequentially connected with a throttle valve, a first indoor unit heat exchanger and a first compressor through pipelines, and a refrigerant outlet of the first compressor is connected with an inlet of the first outdoor unit heat exchanger through a pipeline to form an air cooling compression refrigeration unit.A direct evaporation cooling device is arranged on the air inlet side of the first outdoor unit heat exchanger, a water outlet pipe of the direct evaporation cooling device is connected with a first user through a first water pump, and a return pipe of the first user is connected with a water distribution device positioned above the direct evaporation cooling device. The double-cold-source devicehas a reasonable structure, the air cooling compression refrigeration and the dry air energy evaporation refrigeration are combined to cool to a high-temperature terminal and a low-temperature terminal, the operation energy consumption of a whole air conditioning system is reduced, the energy efficiency ratio of the air cooling compression refrigeration is improved, and the installed power of theunit is reduced.

The invention discloses an exhaust mechanism, a refrigerator and an exhaust control method of the refrigerator, relates to the technical field of refrigerators, and solves the technical problem that in the prior art, heat generated in the defrosting period of the refrigerator is diffused into a compartment, causing temperature rise in the compartment again. The exhaust mechanism comprises a freezing fan cover and an exhaust hole assembly, when a freezing evaporator is in a working state, an air outlet assembly and an air return opening assembly on the freezing fan cover are in an open state, and the exhaust hole assembly is in a closed state; when a defrosting heater is in a working state, the air outlet assembly and the air return opening assembly are in a closed state, and the exhaust hole assembly is in a closed state; and after defrosting is completed, the exhaust hole assembly is in an open state, and hot air in the freezing fan cover is exhausted through the exhaust holes. According to the exhaust mechanism, heat exchange between heat generated by the defrosting heater and air in the compartment is blocked, the influence of heat brought by defrosting on the temperature in the compartment can be reduced to the minimum, more electricity is saved, and environmental protection is facilitated.

The invention provides a movable type automobile air conditioner evaporator with a sufficient refrigerating effect. The movable type automobile air conditioner evaporator comprises a flow collecting pipe system, an evaporation heat exchange device, a fin movement device and a control system, wherein the flow collecting pipe system is vertically arranged; the evaporation heat exchange device is arranged in the middle part of the flow collecting pipe system, and is provided with flat pipes, a louver fin I, a louver fin II, an auxiliary heat exchange cavity and a wiping block; the flat pipes aretransversely arranged, and are connected with the flow collecting pipe system; the adjacent louver fin I and louver fin II are slantwise arranged between the adjacent flat pipes in a V shape; the auxiliary heat exchange cavity and the wiping block are arranged on the louver fin I and the louver fin II; the fin movement device is connected with the flat pipes; a crossing pipe is arranged at the side surface of the flow collecting pipe system. The movable type automobile air conditioner evaporator has the advantages that the automation degree is high, and the functions are simple and practical;by arranging the movable scraping and wiping functions, the condensate and dirt on the louver fin I and the louver fin II can be cleaned, so as to improve the heat exchange efficiency.

The invention discloses an air conditioner and an AHU unit temperature control method. The air conditioner comprises a compressor, a three-pipe heat recovery external unit and an AHU unit, and the AHU unit comprises a plurality of sets of refrigerating coils connected in parallel and a plurality of sets of heating coils connected in parallel, and a liquid pipe of each refrigerating coil is provided with a refrigerating electronic expansion valve; gas pipes of the refrigerating coils are connected with a low-temperature and low-pressure gas pipeline, a liquid pipe of each heating coil is provided with a heating electronic expansion valve, and gas pipes of the heating coils are connected with a high-temperature and high-pressure gas pipeline through a first electromagnetic valve; the gas pipes of the heating coils are connected with the low-temperature and low-pressure gas pipeline through a second electromagnetic valve; a controller is configured to obtain indoor environment information and user setting information; and the refrigerating electronic expansion valves and the heating electronic expansion valves are controlled based on the indoor environment information and the user setting information, so that the energy consumption of the AHU unit is reduced while the dehumidification, refrigeration and heating effects are ensured.

The invention discloses a refrigeration device. The refrigeration device comprises an upper box, a lower box and a connecting belt assembly, wherein the upper box and the lower box are connected through the connecting belt assembly, and a storage cavity is arranged in the connecting belt assembly; an upper air channel module is arranged in the upper box, and an upper fan and an upper evaporator are arranged in the upper air channel module; a lower air channel module is arranged in the lower box, and the lower air channel module comprises a lower air channel assembly, a lower partition module and a fan. The diversification of the storage function of the refrigeration device is realized, and thus the experience of users is improved.

The invention provides an intelligent corpse cabinet comprising a main body. A plurality of stretchers are disposed in the main body. Each stretcher is used to support a corpse; each stretcher is provided with an infrared sensor; a detection circuit and at least two compressors unit are mounted on the top of the main body; and two ends of the top of the main body are provided with an ozonateur and an intelligent controller. Each compressor set is arranged on the top of the main body, so land occupation of the intelligent corpse cabinet can be reduced; besides, at least two compressor sets are mounted on the top of the main body; the intelligent controller can independently control work states and time of each compressor unit; when one compressor unit fails, the intelligent controller can control the other compressor to work, so inner refrigeration of the main body can be ensured.

The invention relates to a control system for a zero-carbon flexible efficient cold source system. The control system for the zero-carbon flexible efficient cold source system comprises a magnetic suspension evaporation-cooling integrated unit, a phase-change cold storage box and a user side, wherein a water return pipeline of the user side is connected with the magnetic suspension evaporation-cooling integrated unit through an electric valve III; and a water supply pipeline of the user side is connected with the magnetic suspension evaporation-cooling integrated unit through an electric valve VI. The control system for the zero-carbon flexible efficient cold source system has the following beneficial effects: through a temperature sensor and a PLC control system, and through the electric valves and an electric proportional three-way valve, the operation condition of the system is controlled, electricity in the off-peak period is effectively utilized for cold storage, cold release is carried out in the peak period, cold supply of the user side is ensured, the stability of a power grid is improved through peak clipping and valley filling, meanwhile, the energy consumption is greatly reduced, and the power consumption is reduced, so that the operation cost is saved; and the phase-change cold storage box facilitates cold and heat transfer, so that the phase-change cold storage box can work conveniently, and the working effect of the phase-change cold storage box is improved.

The invention belongs to the field of air conditioners, and particularly relates to a control method of an air conditioner, the air conditioner comprises a cleaning mode for cleaning an outdoor heat exchanger, and the control method comprises the steps that when the air conditioner runs in a refrigeration mode, whether the air conditioner enters the cleaning mode or not is judged according to the outdoor environment temperature and the outer pipe temperature; when the air conditioner is in heating operation, whether the air conditioner enters the cleaning mode or not is judged according to the operation duration of an outdoor unit; and after the air conditioner enters the cleaning mode, the operation rotating speed of an outdoor fan and the opening degree of a throttling valve are adjusted. According to the control method of the air conditioner and the air conditioner, automatic cleaning of the outdoor heat exchanger can be achieved through simple control logic on the basis that other cleaning devices are not additionally arranged.

The invention discloses an air conditioner control method and an air conditioner system. The method comprises the steps that an indoor unit or an outdoor unit obtains the air suction pressure and the air suction temperature of a compressor, and the superheat degree of the compressor is obtained according to the air suction pressure and the air suction temperature; and the indoor unit or the outdoor unit adjusts the starting step number of an overheating bypass motor according to the superheat degree so as to adjust the amount of exhausted gas, entering a double-channel heat exchanger, of the compressor. The starting step number of the overheating bypass motor is adjusted according to the current superheat degree of an air conditioner so as to adjust the amount of exhausted gas, entering the double-channel heat exchanger, of the compressor, so that the heat exchange degree of return air from an evaporator to the compressor in the double-channel heat exchanger can be achieved, the heat absorption evaporation degree of a refrigerant circulated to the compressor is improved, the superheat degree of the compressor is improved, and the normal refrigeration of the air conditioner is maintained.

An array type moisture-proof industrial switch provided by the present invention comprises a circuit board, a shell, a heat dissipation silica gel layer, a heat dissipation backing plate, a drying layer, a protection box, an early warning device, a master control device, a plurality of baking fans and a cooling device, the circuit board is located in the shell, the heat dissipation silica gel layer wraps the circuit board, the drying layer is located in the middle area of the shell and the heat dissipation silica gel layer, and the baking fans are arranged in the drying layer. The baking fan is located in the protection box and close to one side of the heat dissipation gasket, the baking fan is fixedly connected with the protection box through bolts, the baking fan is electrically connected with the main control device, the cooling device is located on the inner side of the protection box and fixedly connected with the protection box in a welded mode, and the early warning device is electrically connected with the main control device. A plurality of heat dissipation columns are arranged on the heat dissipation base plate, a plurality of heat dissipation holes are formed in the shell, the heat dissipation columns penetrate through the heat dissipation holes and the drying layer and are inserted into the heat dissipation silica gel layer, and heat generated by the industrial switch is led out from the interior through the heat dissipation columns.