44results about How to "Increase return air temperature" patented technology

The invention discloses a method and a device for controlling an air conditioning system, and belongs to the field of air conditioning technology. The control method comprises the following steps of:obtaining an outdoor temperature Tao and an outdoor humidity RH; determining, according to the outdoor temperature Tao and the outdoor humidity RH, a start-stop state of the third throttle device of the cooling branch and a valve degree at the time of opening. The method for controlling the air conditioning system provided by the invention can determine, according to the outdoor temperature and the outdoor humidity condition, whether to open the operation of the cooling branch, so as to use the electric control member with high temperature to heat the refrigerant flowing back to a reservoir, thereby increasing the compressor return air temperature and delaying the attenuation of the heating capacity of the air conditioning system.

The invention provides a pressure control method and control device for an air conditioner and the air conditioner. The pressure control method for the air conditioner comprises the steps that 1, therunning mode of the air conditioner is detected; 2, the air exhaust pressure and the air return pressure of a compressor in the air conditioner are detected; and 3, the rotation speed of an outer fanand an inner fan in the air conditioner is controlled according to the running mode of the air conditioner, the air exhaust pressure and the air return pressure. According to the pressure control method and control device for the air conditioner and the air conditioner, the unit running pressure is continuously detected, the rotation speed of the outer fan or the inner fan is correspondingly adjusted according to comparison of the air exhaust pressure and the air return pressure with a preset value, therefore, the unit running pressure is in an appropriate range value, and the unit jumping phenomenon caused by high-pressure protection or low-pressure protection is prevented; and the control method is high in accuracy, has no delay and is simple and reliable.

The invention provides an energy-saving control device and method for a data center air conditioning terminal. The device and method are applied to a data center air conditioning terminal structure composed of a cold water coil pipe, a draught fan, a regulating valve, a speed regulation execution device, a chilled water inflow pipeline, a chilled water outflow pipeline, an air supply channel and an air return channel. The energy-saving control device comprises a supplied air temperature sensor, a supplied air static pressure sensor, a returned air temperature sensor, an optimization control module, a supplied air temperature control module, a static pressure module and the like. By the adoption of the device and method, the returned air temperature control accuracy can be improved, local hot spots are avoided, the supplied air is controlled in an environment-friendly safe section, the energy consumption of the draught fan of the data center air conditioning terminal can be saved as well, and the energy effect of a whole water cooling air conditioner system is improved.

The invention discloses a carbon dioxide heating and cooling combined system. The system adopts two parts; one part adopts R134a as a high temperature part of a refrigerant, and the other part adopts carbon dioxide as a low temperature part of the refrigerant. The carbon dioxide heating and cooling combined system has the beneficial effects that: all of the refrigerant adopted by the system is an environment-friendly refrigerant; R134a is a medium-low-temperature environment-friendly refrigerant which is widely popular at present; carbon dioxide is adopted as a pure natural refrigerant; an ozone layer depletion potential value is 0; a global warming potential value is 1; carbon dioxide has relatively high unit volume refrigerating capacity and has excellent thermodynamic property; the system can completely recycle heat of condensation to generate high-temperature hot water, medium-temperature hot water and low-temperature hot water; an expansion machine which is additionally arranged in the system utilizes energy lost by throttling and reducing pressure, improves back pressure of carbon dioxide and greatly improves the efficiency of the whole system; heat of condensation of an additional support system is completely utilized by the system to increase a back temperature of carbon dioxide.

The invention provides a refrigeration control method and device of an air conditioner and the air conditioner. The air conditioner comprises bypass loop and a solenoid valve arranged on the bypass loop. The method comprises the following steps that when the air conditioner runs in a normal refrigeration mode or a dehumidification mode, the outdoor environment temperature, the air inlet temperature of a compressor and the coiled pipe temperature of an evaporator are acquired; and according to the outdoor environment temperature, the air inlet temperature and the coiled pipe temperature, the solenoid valve is controlled so as to achieve breakover of the bypass loop. According to the refrigeration control method of the air conditioner, the running condition of the air conditioner is judged according to the outdoor environment temperature, the air inlet temperature of the compressor and the coiled pipe temperature of the evaporator, the solenoid valve is controlled according to the outdoor environment temperature, the air inlet temperature of the compressor and the coiled pipe temperature of the evaporator so as to achieve breakover of the bypass loop, the air return temperature is improved, compressor reliability is guaranteed, the lower limit temperature of air conditioner refrigeration is widened, and the low-temperature refrigeration requirements of special occasions is met.

The invention relates to the field of heat exchange of air conditioners, in particular to an air conditioner non-stop defrosting system and method and an air conditioner. A compressor and an indoor heat exchanger in the air conditioner non-stop defrosting system is connected with each other through a heating gas exhaust pipeline and a heating return gas pipeline to form a heating loop, and the compressor and an outdoor heat exchanger are connected with each other through a defrosting gas exhaust pipeline and a defrosting return gas pipeline to form a defrosting loop; and the heating gas exhaust pipeline, the heating return gas pipeline, the defrosting gas exhaust pipeline and the defrosting return gas pipeline penetrate through a heat storage device. The compressor in the technology simultaneously supply heat for the indoor heat exchanger and the outdoor heat exchanger, heating and defrosting are carried out simultaneously. Moreover, the heating gas exhaust pipeline for exhausting gas to the indoor heat exchanger and the defrosting gas exhaust pipeline for exhausting gas to the outdoor heat exchanger pass through the heat storage device, dissipated heat can be absorbed by the heat storage device, and if heat cannot meet requirements, the heating gas exhaust pipeline and the defrosting gas exhaust pipeline are heated by the heat storage device. In addition, the heat storage device further can supply heat for the heating return gas pipeline and the defrosting return gas pipeline, the temperature of return gas is increased, and the heating effect is improved in a defrosting process.

The invention relates to the field of air conditioner heat exchange, in particular to an air conditioner defrosting system and method and an air conditioner. The air conditioner defrosting system mainly comprises a compressor, a heat accumulation device and an outdoor heat exchanger, wherein the compressor is connected with the outdoor heat exchanger through a defrosting exhaust pipeline and a defrosting gas-return pipeline to form a defrosting loop; and both the defrosting exhaust pipeline and the defrosting gas-return pipeline penetrate the heat accumulation device. According to the technology, after being defrosted, a refrigerant flows back into the heat accumulation device to be heated and then flows back into the compressor so as to avoid flowing back into an indoor heat exchanger and reducing the indoor temperature; the defrosting exhaust pipeline for discharging gas into the outdoor heat exchanger passes through the heat accumulation device, heat emitted by the defrosting exhaust pipeline can be absorbed by the heat accumulation device, and the heat accumulation device can heat the defrosting exhaust pipeline when the defrosting exhaust pipeline does not reach a required temperature; and on the other hand, the heat accumulation device can also supply heat to the defrosting gas return pipeline to increase the temperature of return gas and prevent the indoor temperature from being reduced during a defrosting process.

The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioning unit and a control method thereof. The problem that when an existing air conditioning unit operates in a low-temperature environment, the heat exchange effect becomes poor due to the fact that the air return temperature is too low is solved. Therefore, the air conditioning unit comprises a refrigerant circulation system, a regenerative branch and a regenerative heat exchanger, the refrigerant circulation system comprises a refrigerant circulation pipeline, an indoor heat exchanger, a four-way valve, a gas-liquid separator, a compressor and an outdoor heat exchanger, and the indoor heat exchanger, the four-way valve, the gas-liquid separator, the compressor and the outdoor heat exchanger are arranged on the refrigerant circulation pipeline; based on the arrangement of the regenerative branch and the regenerative heat exchanger, a medium-temperature medium-pressure refrigerant can be used for heating the refrigerant before entering the gas-liquid separator so as to increase the return gas temperature, and the temperature of the refrigerant in the regenerative branch is further increased through the refrigerant flowing through an outdoor coil pipe; and in addition, the communicating time of the regenerative branch and the refrigerant circulation system is accurately judged according to the temperature of the outdoor coil pipe and the return air temperature, so that the air conditioning unit can complete defrosting in the shortest time.

The invention provides a micro-module data center used for solving the problem that an existing data center micro-module needs external circulation heat dissipation, and is low in refrigeration efficiency, large in occupied area and difficult to assemble; the micro-module data center disclosed in the invention comprises a comprehensive cabinet and at least one set of IT equipment cabinet; the comprehensive cabinet comprises a cabinet body with a containing cavity, a power supply assembly, a monitoring alarm assembly and an air conditioner; a front door body is arranged on the front side of the cabinet body, and a rear door body is arranged on the rear side of the cabinet body; a closed space is defined by the cabinet body, the front door body and rear door body; the air conditioner is arranged at the bottom of the containing cavity; a cold air channel is formed between the air conditioner and the front door body, and a hot air channel is formed between the air conditioner and the rear door body; the air conditioner can draw cold air from the air conditioner to the cold air channel, and can draw the hot air from the hot air channel to the air conditioner; and according to the micro-module data center, the isolation design of closing the cold and hot channels is adopted, so that gas mixing is avoided, the return air temperature is greatly improved, the refrigeration efficiency is improved while the PUE is reduced, the space is saved, and the rapid arrangement, the visual display and the intelligent management are achieved.

The invention discloses a novel heat pipe back plate air-conditioner system which comprises at least one set of condensers, multiple cabinets and back plate air-conditioners with the number corresponding to that of the cabinets. The multiple cabinets are sequentially connected side by side. The adjacent cabinets are designed in a series connection manner, and only the cabinet on the outmost layer is provided with a sealing side plate. The back plate air-conditioners are arranged on the back faces of the cabinets correspondingly. Each back plate air-conditioner comprises a heat exchanger, a fan, a temperature and humidity sensor and a control part, wherein the heat exchanger comprises a hot end and a cold end, the hot end is arranged in the corresponding cabinet and provided with a liquid inlet and a gas return outlet, and communicates with the cold end arranged in the outer environment through a pipeline, the fan is arranged in the corresponding cabinet and forces gas flow flowing through the cabinet to pass through the hot end of the heat exchanger to cool the gas flow, and the temperature and humidity sensor is connected with the control part. The condensers are arranged in the outer environment. The cold ends of the heat exchangers of the back plate air-conditioners and the condensers exchange heat. The system solves the heat dissipation problem of the high-heat-density cabinets, the cooling efficiency is higher, and energy consumption is lower.

The invention discloses an evaporation cooling horizontal outdoor machine for semiconductor refrigeration. The evaporation cooling horizontal outdoor machine comprises a filter mesh, a new air valve, a plate-fin heat exchanger, a stuffing and a centrifugal blower, which are arranged at the upper part inside a case body chassis shell; the air intake side of the stuffing is provided with an air return hole corresponding to the chassis shell; a spray device a is arranged above the stuffing; the spray device a is provided with a water inlet corresponding to the shell; an exhaust valve is arranged below the plate-fin heat exchanger; a spray device b and an axial flow blower are arranged above the plate-fin heat exchanger; the axial flow blower is provided with an exhaust outlet corresponding to the shell; the spray device a and the spray device b are communicated and are provided with a valve; the plate-fin heat exchanger corresponds to a new air inlet on the shell; the centrifugal blower corresponds to an air supply outlet on the shell; and the shell bottom is provided with a water collecting tank. With utilization of the evaporation cooling technology with lower operation cost, cold water for satisfying requirement of an indoor machine and cold air for satisfying requirement of refrigerating capacity are produced during the refrigeration; hot air for satisfying requirement of heating is produced during heating; and the evaporation cooling horizontal outdoor machine for the semiconductor refrigeration has higher energy-saving effect and meets the indoor requirement.

The invention relates to the field of air conditioners, and provides a start control method of an air conditioner. The air conditioner comprises a compressor, an evaporator, a condenser, an evaporation fan and a condensation fan. The method comprises the steps that when the air conditioner is started, the evaporation fan operates at a first preset rotating speed; and in the process from starting of the air conditioner to normal temperature adjusting operation, the frequency increasing process of the compressor has at most one stop point, and the current operation rotating speed of the evaporation fan is determined jointly according to the first preset rotating speed, the operation mode of the air conditioner, the outdoor environment temperature and the current operation frequency of the compressor, specifically, the current operation rotating speed of the evaporation fan is greater than the first preset rotating speed. The frequency increasing period of the compressor can be shortened, the air conditioner can quickly reach the normal temperature adjusting state, and the user experience can be improved; and in addition, it can be guaranteed that parts in the compressor cannot be excessively abraded in the continuous frequency increasing process of the compressor, and it can be guaranteed that the compressor normally operates for a long time.

The invention relates to the technical field of energy conservation of air conditioners, and discloses an air conditioner. The air conditioner comprises a compressor, a gas-liquid separator and a thermoelectric conversion device, wherein a gas outlet end of the gas-liquid separator communicates with a gas return port of the compressor; and a cold end of the thermoelectric conversion device is in heat conduction contact with the compressor to absorb heat from the compressor, and a hot end of the thermoelectric conversion device is in heat conduction contact with the gas-liquid separator to release heat to the gas-liquid separator. According to the air conditioner provided by the embodiment of the invention, heat on the body of the compressor can be transferred to the gas-liquid separator byutilizing the thermoelectric conversion device, so that the temperature of a refrigerant in the gas-liquid separator is increased by utilizing the heat, and thus the return gas temperature of the compressor can be effectively increased, and the compression effect of the compressor is enhanced; and via arrangement of the thermoelectric conversion device, the part of heat transferred to an outer wall by the compressor is recycled, and a waste heat utilization rate is increased.

The invention provides a variable frequency air conditioner control method and device, an air conditioner and a storage medium. The variable frequency air conditioner control method comprises the steps that a variable frequency air conditioner is controlled to increase frequency according to a preset frequency increasing mode; and before the frequency of the variable frequency air conditioner reaches the target frequency or within the preset duration after the frequency rising starting moment of the variable frequency air conditioner, the opening degree of an electronic expansion valve of thevariable frequency air conditioner is controlled to be larger than the preset opening degree, and / or the rotating speed of a draught fan in an indoor unit of the variable frequency air conditioner iscontrolled to be larger than the preset rotating speed. The air return temperature can be effectively increased, oil return is optimized, and the oil return performance of the compressor is improved.

The invention discloses a gas-replenishing enthalpy-increasing air conditioner system and a control method of the gas-replenishing enthalpy-increasing air conditioner system. The gas-replenishing enthalpy-increasing air conditioner system comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are connected together to form a refrigerant loop. The compressor is provided with a refrigerant suction inlet and a refrigerant discharge outlet. The refrigerant suction inlet of the compressor is connected with a bypass pipe. The outdoor heat exchanger is provided with a first flow path and a second flow path, wherein a refrigerant flows through the first flow path and the second flow path. The first flow path is connected between the refrigerant discharge outlet of the compressor and the throttling device. An inlet of the second flow path is connected with the refrigerant discharge outlet of the compressor. An outlet of the second flow path is connected with the throttling device and the bypass pipe through a valve assembly. The valve assembly is used for selectively enabling the second flow path to be cut off or communicate with the throttling device or the bypass pipe. Continuous refrigeration of the gas-replenishing enthalpy-increasing air conditioner system in the low-temperature environment is achieved, and therefore user experience is improved.

The invention discloses a controlling method of a refrigeration device. The method comprises the following steps: acquiring a temperature of an electronic control module in the refrigeration device atregular time; acquiring a dew-point temperature corresponding to an outdoor environment of the refrigeration device; and regulating operation parameters of the refrigeration device when the temperature of the electronic control module is smaller than the dew-point temperature so as to increase an air return temperature of a liquid storage tank. The invention also discloses the refrigeration device and a storage medium. According to the controlling method of the refrigeration device, the refrigeration device and the storage medium disclosed by the invention, the electronic control module is subjected to heat dissipation through the liquid storage tank, and the operation parameters of the refrigeration device are regulated when the temperature of the electronic control module is less than the dew-point temperature of the outdoor environment so as to increase the air return temperature of the liquid storage tank. Through increasing the air return temperature, the temperature of the liquid storage tank can be increased, so that the temperature of the electronic control module is further increased, and condensation of the electronic control module is avoided.

The invention provides an air conditioner, an operation control method and a computer readable storage medium. The air conditioner comprises a four-way valve, an air return pipe and a first exhaust branch pipe, wherein the four ports end of the four-way valve are connected with an indoor heat exchanger, an exhaust port of a compressor, an outdoor heat exchanger and an air return port of the compressor respectively; the first port of the four-way valve can communicate with the air return port of the compressor through the air return pipe; and the second port of the four-way valve can communicate with the exhaust port of the compressor through the first exhaust branch pipe, and high temperature and high pressure refrigerants in the first exhaust branch pipe can conduct heat exchange with backflow refrigerants in the air return pipe. Through the technical scheme, the air return temperature of the compressor can be effectively increased, the exhaust temperature of the compressor is increased, and thus the energy efficiency and reliability of an air-conditioning system are improved.

The invention relates to the technical field of air conditioning, and provides an air conditioning system, an air conditioner and an air conditioning method. The air conditioning system comprises an indoor heat exchanger, a throttling device and an outdoor heat exchanger connected in sequence; the indoor heat exchanger and the outdoor heat exchanger are both connected with a compressor through a four-way valve; a heat exchanger is connected between the throttling device and the indoor heat exchanger; and the outdoor heat exchanger is connected to the four-way valve through the heat exchanger. A refrigerant flowing out from the indoor heat exchanger exchanges heat with a refrigerant flowing out from the outdoor heat exchanger so as to recycle heat in the refrigerant flowing out from the indoor heat exchanger. Specifically, the refrigerant flowing out from the indoor heat exchanger exchanges heat with the refrigerant flowing out from the outdoor heat exchanger, so that the temperature of the refrigerant flowing out from the outdoor heat exchanger can be increased when the refrigerant flowing out from the indoor heat exchanger is too cold, the air return temperature of the compressor is increased, the exhaust temperature of the compressor is increased, and the heating capacity of the air conditioner is overally optimized.

The invention relates to the technical field of pellet gas, and discloses a technical improvement method for optimizing nitrate reduction of vanadium-titanium pellet gas. Combustion characteristics ofblast furnace gas are matched with that of coke oven gas. When the blast furnace gas is added and mixed, the pressure difference between the blast furnace gas and the coke oven gas is reduced as muchas possible, so that the blast furnace gas and the coke oven gas can be effectively mixed; before the blast furnace gas is mixed in, after normal ignition of pure coke oven gas, high furnace gas withthe appropriate ratio is gradually added, the ratio of the blast furnace gas to the coke oven gas is 2:1, the blast furnace gas is gradually added appropriately, and adding and observation are simultaneously carries out step by step. By means of the technical improvement method for optimizing nitrate reduction of vanadium-titanium pellet gas, the generation amount of the thermal NOx in the flue gas after combustion is reduced, meanwhile, a partition wall of a circular cooler is reformed, so that the temperature of the return air is increased, stable increase of the temperature in a rotary kiln is guaranteed, the phenomenon that the combustion is insufficient because the return temperature is too low is avoided, the roasting effect of briquettes is guaranteed, and the generation amount ofthe NOx is greatly reduced.

The invention discloses a control method of a refrigeration device, comprising the following steps of: acquiring the temperature of an electric control module in the refrigeration device; acquiring the temperature of a dew point corresponding to the outdoor environment of the refrigeration device; when the temperature of the electronic control module is lower than the temperature of the dew point,the opening degree of an electronic expansion valve in the refrigeration device is appropriately reduced to improve the return air temperature of a liquid storage tank. The invention further discloses a refrigeration device and a computer readable storage medium. In the invention, the electric control module is radiated through the liquid storage tank, and when the temperature of the electric control module is lower than the temperature of dew point in the outdoor environment, the opening degree of the expansion valve in the refrigeration system is appropriately reduced, so that the return air temperature of the liquid storage tank is improved, the temperature of the liquid storage tank can be improved by increasing the return air temperature, the temperature of the electric control module is further improved, and condensation of the electric control module is avoided.

The invention discloses a zero emission device and method for VOCs desorption condensation treatment tail gas, and belongs to the technical field of VOCs tail end treatment. The zero discharge device comprises an adsorption device for treating volatile organic compounds (VOCs) of the adsorption device, and further comprises an adjusting fan, an end difference heat exchanger, a heater and a condensation absorption tower; the adjusting fan is arranged at the outlet end of an air inlet valve or the inlet end of an air return valve; the inlet end of the air inlet valve is connected with the inlet end of the adsorption box, and the connection part is an air inlet port of the VOCs; the inlet end of the air return valve is connected with the outlet end of the adsorption box through the heater, and the connection part is an air outlet port of the VOCs at the same time; and a hot air outlet of the end difference heat exchanger communicates with an air inlet of the condensation absorption tower, and a cold air inlet of the end difference heat exchanger communicates with an air return opening of the condensation absorption tower. The device and method have the advantages that VOCs deep treatment realizes high desorption rate, energy-saving and high-efficiency zero emission of tail gas, meanwhile, the tail gas is recycled as desorption gas, and the tail end treatment cost is greatly reduced.

The invention relates to a double-heating and one-evaporation gas-liquid tank type multifunctional energy-saving and efficient water heater and a working method thereof. The double-heating and one-evaporation gas-liquid tank type multifunctional energy-saving and efficient water heater is characterized in that the water heater comprises a compressor, a first condensation heating pipe, a four-way valve, an air conditioning condensation pipe, a second condensation heating pipe, a throttling valve, an evaporator and a gas-liquid tank which are connected in sequence, the first condensation heatingpipe is arranged in a domestic hot water tank, the first end of the four-way valve is connected with the output end of the first condensation heating pipe, the second end of the four-way valve is connected with the input end of the air conditioning condensation pipe, and the third end of the four-way valve is connected with the first end of the evaporator. The double-heating and one-evaporation gas-liquid tank type multifunctional energy-saving and efficient water heater is simple in structure and reasonable in design, and can be used for improving the heat efficiency easily.

The invention discloses an air-conditioning system for replenishing air and increasing enthalpy and a control method thereof. An air-conditioning system for supplementing air and increasing enthalpy, including a compressor connected together to form a refrigerant circuit, an outdoor heat exchanger, a throttling device and an indoor heat exchanger, the compressor has a refrigerant suction port and a refrigerant discharge port, and the refrigerant of the compressor The suction port is connected with a bypass pipe, and the outdoor heat exchanger is provided with a first flow path and a second flow path for the refrigerant to flow through. The first flow path is connected between the refrigerant discharge port of the compressor and the throttling device, and the second flow path The inlet of the flow path is connected to the refrigerant outlet of the compressor, and the outlet of the second flow path is respectively connected to the throttling device and the bypass pipe through the valve assembly. The valve assembly is used to selectively block the second flow path, or make the second flow path Connect throttling device or bypass pipe. Realize the continuous refrigeration of the air-enhancing air-conditioning system in a low-temperature environment to improve user experience.

The invention discloses an evaporation cooling horizontal outdoor machine for semiconductor refrigeration. The evaporation cooling horizontal outdoor machine comprises a filter mesh, a new air valve, a plate-fin heat exchanger, a stuffing and a centrifugal blower, which are arranged at the upper part inside a case body chassis shell; the air intake side of the stuffing is provided with an air return hole corresponding to the chassis shell; a spray device a is arranged above the stuffing; the spray device a is provided with a water inlet corresponding to the shell; an exhaust valve is arranged below the plate-fin heat exchanger; a spray device b and an axial flow blower are arranged above the plate-fin heat exchanger; the axial flow blower is provided with an exhaust outlet corresponding to the shell; the spray device a and the spray device b are communicated and are provided with a valve; the plate-fin heat exchanger corresponds to a new air inlet on the shell; the centrifugal blower corresponds to an air supply outlet on the shell; and the shell bottom is provided with a water collecting tank. With utilization of the evaporation cooling technology with lower operation cost, cold water for satisfying requirement of an indoor machine and cold air for satisfying requirement of refrigerating capacity are produced during the refrigeration; hot air for satisfying requirement of heating is produced during heating; and the evaporation cooling horizontal outdoor machine for the semiconductor refrigeration has higher energy-saving effect and meets the indoor requirement.

The invention discloses a wasteheat recovery system of a circulating hot water unit of a heat pump. The system comprises a first condenser, a compressor, a second condenser, a throttling unit, a circulating water tank and a wasteheat recoverer, wherein the first condenser, the second condenser and the wasteheat recoverer are provided with four ports, separately, the four ports are separately a first upper port, a first lower port, a second upper port and a second lower port, the first upper ports and the first lower ports of the first condenser, the second condenser and the wasteheat recoverercommunicate correspondingly, and the second upper ports and the second lower ports of the first condenser, the second condenser and the wasteheat recoverer communicate correspondingly. According to the system, wasteheat of a condensing working medium is recovered by means of a second condenser pipeline, so that the condensing temperature is reduced and the evaporating temperature is increased. The condensing temperature is further reduced by means of the wasteheat recoverer, so that the back temperature of the compressor is increased, and the heating capacity and the energy efficiency ratio of a heat pump system are improved. Meanwhile, it is also beneficial for defrosting the second condenser in a frosting working condition.

The invention discloses an air conditioning system and an auxiliary heating control method thereof. The air conditioning system comprises a compressor, a condenser and an evaporator which sequentially communicate with one another in an end-to-end mode; a throttling device is arranged between the condenser and the evaporator; the air conditioning system further comprises an auxiliary heating device and a controller; the auxiliary heating device is arranged at a return air inlet of the condenser and is used for increasing the return air temperature of the condenser so as to increase the high pressure of the air conditioning system; and the controller is used for controlling the auxiliary heating device to be started when the high pressure of the air conditioning system and the low pressure of the air conditioning system meet preset conditions. By means of the system, the problem that when the outdoor temperature is low, the compressor is excessively low in pressure ratio and is difficult to start can be solved, the stability of the air conditioner system is improved, and the annual refrigeration requirement under an extreme environment is met.

A rotary compressor with compression pump separated from motor comprises an inside motor and a seal shell for the compression pump, a compressor rotary shaft, and a gas-liquid separator communicating with the compression pump through an intake elbow pipe. The compression pump comprises an upper flange, a cylinder and a lower flange; the compressor rotary shaft is driven by a motor to rotate; the upper flange, the cylinder and the lower flange are successively arranged on a pump rotary shaft with an axis coinciding with that of the compressor rotary shaft; the pump rotary shaft is driven by the compressor rotary shaft to rotate; a pump cover plate fixed on an inner wall of the seal shell is arranged above the upper flange; the pump cover enables the space in the seal shell and below the pump cover plate to form a sealed high-pressure area; an exhaust pipe communicating with the high-pressure area is arranged on a side wall of the seal shell; and radiating holes are arranged on a peripheral wall of the seal shell and above the pump cover plate. According to the invention, electrical components are separated from a refrigerant, so as to improve usage safety and reliability of the compressor.

The invention provides a heat pipe backboard type data center. The data center comprises a plurality of cabinets, a plurality of backboard air conditioners, and a plurality of fans, wherein the numberof the backboard air conditioners is identical to the number of the cabinets; the cabinets are arranged in a front row and a back row to form cabinet groups, and a front-row cabinet group and a rear-row cabinet group are arranged side by side; each backboard air conditioner is mounted on a rear door of the corresponding cabinet; the front-row cabinet group and the rear-row cabinet group are arranged back to back, so that a cooling passage is formed between the front-row cabinet group and the rear-row cabinet group; a closing cover top is mounted at the top of the cooling passage; a pluralityof fan mounting openings are formed in the closing cover top; and the fans are respectively mounted on the fan mounting openings in the sealing cover top. Therefore, the backboard air conditioners aremounted on the rear doors of the cabinets, hot air blown from the cabinets is directly cooled through heat exchangers of the backboard air conditioners, and cooled air enters the cooling passage andis sent to a surrounding environment through suction of the fans, so that cooler air flows that are exhausted from the cabinets can be recycled into the cabinets for cooling of electronic equipment.

The invention relates to a defrosting system and method for a heat pump air conditioner, comprising a compressor, a four-way reversing valve, an indoor heat exchanger, a throttling device, an outdoor heat exchanger and a heat storage module which are sequentially connected through pipelines and form a circulation loop , the heat storage module includes a phase change heat storage material, a PTC electric heating rod, a PTC electric heating rod temperature control circuit, a refrigerant pipeline and a PTC temperature control system, and the PTC temperature control device is used to set the heating temperature and control the overload temperature . The heat pump type air conditioner defrosting system and method of the present invention solves the problem that the system and control method are based on the frequency conversion compression technology, combined with the phase change heat storage technology and the PTC electric heating technology, and the waste heat of the compressor is recovered and reused, and the efficiency is improved. At the same time, defrosting can be realized, and the heating efficiency can be improved by increasing the temperature of the air return port of the compressor.