322results about How to "Increase air temperature" patented technology

An air-conditioning device for a vehicle includes a blower and an estimating portion. The blower is disposed in an air-conditioning case, and performs a dry control for a heat exchanger arranged in a passenger compartment of the vehicle by sending air. The blower uses one of power supplied from an external power source, power supplied from the battery having residual quantity equal to or larger than a predetermined quantity, or power supplied from an in-vehicle solar cell, while the vehicle is parked. The estimating portion estimates an approximate elimination of odor generated from the heat exchanger by starting the sending of air, and stops the blower based on the estimation.

The invention discloses a control method and device for condensation prevention of an air conditioner and the air conditioner. The method comprises following steps: determining whether the wind level set by the air conditioner is higher than medium-speed wind level or not when the air conditioner operates in a cooling state and a compressor of the air conditioner is started; obtaining first temperature difference between indoor ambient temperature of the set wind level and inner evaporator tube temperature when the set wind level is less than or equal to the medium-speed wind level and determining whether the first temperature difference satisfies first pre-set temperature of corresponding wind level in different wind levels below the medium-speed wind level; increasing the angle of a wind guide plate, and / or rotating speed of an inner fan of the air conditioner when the first temperature difference is smaller than or equal to the first pre-set temperature and when the angle of the wind guide plate is the pre-set minimum value, and therefore the air conditioner is in the pre-set condensation prevention mode. The technical scheme provided by the control method and device for condensation prevention of the air conditioner and the air conditioner has following beneficial effects: defects in the prior art such as the proneness of generating condensation, bad environmental health and poor users' experience are solved; condensation is not easily generated; the environmental health is good; and users' experience is good.

A cooling system of a gas turbine engine, includes a heat exchanger having a common wall shared by a first air passage for directing a portion of a compressor air flow to be used as cooling air, and a second air passage for directing a portion of a bypass air flow, the portion of the compressor air flow being thereby cooled by the portion of the bypass air flow through the common wall

The present invention discloses a solid oxide fuel cell system and a control method thereof, and belongs to the field of fuel cells. According to the solid oxide fuel cell system structure, an output end of an air supply unit is connected with an input end of a stack unit through a valve, and is connected with an input end of a tail gas recovery unit through a valve, an output end of a fuel supply unit is connected with the input end of the stack unit through a mass flow meter, and is connected with the input end of the tail gas recovery unit through a mass flow meter, an output end of the stack unit is connected with the input end of the tail gas recovery unit, an output end of the tail gas recovery unit is connected with an input end of the fuel supply unit, and a control unit is respectively connected with various valves, various mass flow meters and various units. According to the present invention, work states of various valves and various flow meters are coordinatedly controlled according to load power requirements, and work temperatures of various units are regulated through adjusting gas flows so as to complete thermal-electric system control, improve system efficiency, and ensure a service life of the stack.

The invention discloses an air conditioner indoor unit. The air conditioner indoor unit comprises a base, a mounting shell, a back plate, a front panel, a lower volute fan assembly, an upper volute fan assembly and an evaporator assembly, wherein the base, the mounting shell, the back plate and the front panel define an accommodating space; the lower volute fan assembly is arranged inside the accommodating space and comprises a lower fan, a first volute and a second volute, and a lower air duct is defined between the first volute and the second volute; the upper volute fan assembly is arranged above the lower volute fan assembly and comprises an upper fan, a first upper volute and a second upper volute, and an upper air duct is defined between the first upper volute and the second upper volute; the evaporator assembly is arranged inside the accommodating space and is constructed in a mode that after the evaporator assembly exchanges heat with air entering the accommodating space from a return air inlet of the back plate, the air is guided respectively by the upper fan and the lower fan to enter the lower air duct and the upper air duct. The upward-downward air supply double cross-flow air conditioner indoor unit is high in heating efficiency and low in energy consumption and use costs.

An air conditioning system includes a multiple effect evaporative condenser, at least one compressor, at least one heat exchanger, an expansion valve, and at least one multiple-effect evaporative condensers. The multiple effect evaporative condenser and the heat exchanger utilize a highly efficient heat exchanging pipe for performing heat exchange between water and refrigerant.

The invention discloses a frequency control method, a frequency control device, a multi-split air conditioner and a storage medium. The frequency control method comprises the following steps that whenthe multi-split air conditioner is in the heating operation, a capability requirement identification value corresponding to each indoor unit in all indoor units in the running state, set temperatureand indoor environment temperature are acquired at interval preset time so as to determine the initial operating frequency of a compressor in each preset time; in each preset time, outdoor environmenttemperature is acquired; a target frequency correction coefficient within each preset time is determined according to the outdoor environment temperature; and the initial operation frequency within each preset time is corrected according to the target frequency correction coefficient so as to determine the target operating frequency of the compressor. According to the frequency control method, the frequency control device, the multi-split air conditioner and the storage medium, the problems that the accuracy of the tube temperature correction frequency of the middle of the indoor unit is lowand the needed time is too long are solved, and the effect of improving the heating capacity of the multi-split air conditioner is achieved.

The invention relates to a heat recovery variable-frequency multi-split heat pump system and a control method of the heat recovery variable-frequency multi-split heat pump system. The system comprises an outdoor unit and two indoor units. According to the three-pipe heating recovery multi-split heat pump system designed based on a four-way reversing valve, each indoor unit is provided with two electronic expansion valves and two heat exchangers so that any indoor unit in the system can operate independently under the three working conditions of refrigeration, heating and heat recovery, and under the multi-split condition, the system has the function of operating under six working conditions, namely, the full-refrigeration working condition, the full-heating working condition, the common-heat-recovery working condition, the common-heat-recovery-dehumidification working condition, the heat recovery dehumidification and refrigeration combined working condition and the heat recovery dehumidification and heating combined working condition. Under the heat recovery dehumidification condition, heat emitted by a condenser is utilized for improving a low outlet air temperature during low-temperature dehumidification so as to achieve dehumidification without temperature fall or dehumidification with temperature rise, so that the thermal comfort and efficiency of the system are improved, and the refrigerating capacity and heating capacity of the system are effectively improved.

Embodiments for a charge air cooler are provided. In one example, a method comprises adjusting an operating parameter in response to a degraded grille shutter, the degraded grille shutter determined based on a temperature difference across a charge air cooler. In this way, degradation of the charge air cooler or engine may be reduced.

The invention discloses an anti-condensation control method, device and air condition system used for a fixed frequency unit. The method includes detecting the evaporation temperature of a refrigerant agent in the fixed frequency unit in a refrigerating mode; performing fuzzy inquiry calculation on the detected evaporation temperature based on a pre-set fuzzy relation database so as to obtain a corresponding calculation result, wherein the fuzzy relation database includes the fuzzy relation between the evaporator temperature of the fixed frequency unit and the corresponding indoor environmental temperature; judging whether to perform anti-condensation control over the fixed frequency unit based on the calculation result; enabling the fixed frequency unit to enter a predetermined anti-condensation control mode when the judgment result shows that anti-condensation control over the fixed frequency unit is needed so as to realize the anti-condensation control over the fixed frequency unit. The scheme provided by the invention can overcome shortcomings of use inconvenience, large potential safety hazards and poor user experience and the like of the prior art and can achieve beneficial effects of use convenience, small potential safety hazards and good user experience.

A refrigerator appliance includes a freezer compartment and at least one position-adjustable partition located in the freezer compartment. The at least one position-adjustable partition is configured to be selectively deployed in a first position such that a space is defined in the freezer compartment that causes a reduction in an amount of inlet airflow that contacts one or more portions of the freezer compartment that are outside the defined space.

The invention relates to a cabinet semiconductor moisture suction device applicable to a wardrobe, a shoe cabinet, a file cabinet, a locker and a kitchen cabinet. The device comprises a mounting box 1, a radiator 2, a semiconductor refrigerating strip 3, a condenser 4, a water receiving disc 5, a fan 6, a water evaporation tank 7 and a drainage hole 8. The radiator 2 consists of two parts, namely an inner radiator 22 inside the mounting box and an outer radiator 21 which runs through an open hole reserved in the mounting box and is exposed outside the mounting box. When the semiconductor refrigerating strip operates, the fan also operates simultaneously. Wind blown out from the fan brings heat on the surface of the radiator away and heats air in the cabinet, thereby accelerating the evaporation of moisture of an object; simultaneously, moisture in air is condensed to dew by the condenser, is gathered on the water receiving disc and flows to the water evaporation tank 7 through the drainage hole 8; and the heat of the outer radiator 21 is utilized to evaporate condensed water to the air outside the cabinet, thereby avoiding manual treatment on the condensed water.

Methods and systems are provided for an engine including a first turbocharger having a first compressor and a second turbocharger having a second compressor. An EGR differential between the first compressor and the second compressor may be increased under a condensation condition, and decreased under a surge condition. The EGR differential may also be decreased when a compressor outlet temperature exceeds an outlet temperature threshold.

Light control glasses are used as window glasses of a vehicle. When the vehicle is parked, voltage is applied to the light control glass, which directly receives solar radiation from the sun, so that a light transmittancy of the light control glass is reduced to reduce the amount of solar radiation entered a passenger compartment of the vehicle.

A control method and control device for a heat pump-type double-circulation hot-air drying system, relating to a device for supplying or controlling air or gas for drying solid materials or products, and in particular to a control method and control device for a heat pump-type hot-air drying system. The method comprises: configuring a temperature control parameter, and saving a preset temperature control curve parameter; detecting and monitoring an outlet air temperature, and the temperature and humidity of a drying room; dynamically adjusting a set temperature according to a preset temperature control curve; and selecting, according to a current set temperature, a double-circulation dynamic operation mode of a system. The control device uses a micro-processor to realize program control. By building an inner circulation loop for large-volume air circulation, the latent heat of condensation in a refrigerant is fully absorbed, to improve the basic air temperature.

The invention provides a photovoltaic drive solar air collector which comprises a collector cavity and a collecting plate arranged in the collector cavity, wherein the collector cavity is also internally provided with a solar photovoltaic plate, an S-shaped air channel, a wind guide plate and a partition plate; the wind guide plate divides the collector cavity into a front cavity and a back cavity, the partition plate is arranged in the back cavity and divides the back cavity into a back upper cavity and a back lower cavity, the solar photovoltaic plate and the collecting plate are connected together and the solar photovoltaic plate is arranged above the collecting plate, meanwhile, the solar photovoltaic plate and the collecting plate are arranged in the front cavity and divide the front cavity into a sunny cavity and a shaded cavity, and the S-shaped air channel is arranged in the shaded cavity. The collector has the advantages of complete heat exchange, good heat exchange effect, high heat utilization, low use cost and high economy.

A cooling module includes a heat exchanger, a blower, a fan shroud and an air cleaner unit for filtering air to be introduced into an engine of a vehicle. The fan shroud holds the blower on a downstream side of the heat exchanger with respect to a flow of air passing through the heat exchanger and has an air introducing portion defining an air passage from the heat exchanger to the blower. A front end of the air cleaner unit is offset from the heat exchanger with respect to a horizontal direction. A side wall of the air cleaner unit partly forms the air introducing portion. A clearance is provided between the side wall and the heat exchanger such that air upstream of the heat exchanger is conducted toward a position downstream of the heat exchanger through the clearance.

The invention discloses a forced finned straight pipe condensation heat-supply heat exchanger, which comprises a shell, a combustor and a plurality of finned straight pipes, wherein the combustor is positioned on the upper part of the shell; the periphery of the combustor is provided with a group of finned straight pipe bundles consisting of a plurality of finned straight pipes which are tightly and uniformly distributed along the circumference; a smoke exhaust pipeline which consists of the shell and a plurality of tightly arranged finned straight pipes is arranged below the combustor; the smoke exhaust pipeline is emptied through a smoke outlet; two ends of the finned straight pipes are respectively front water main pipes and rear water main pipes; clapboards are arranged in the rear water main pipes; the rear water main pipes are separated into a water inlet area and a water outlet area through the clapboards; and water flow enters part of the finned straight pipes through the water inlet area, reaches the front water main pipes and enters the water outlet area of the rear water main pipes through the other part of the finned straight pipes. The inwards folded finned straight pipes serve as basic elements of the forced finned straight pipe condensation heat-supply heat exchanger, and the heat exchange efficiency is obviously improved.

The invention provides a solar air conditioner for improving air conditioning heating performance. The solar air conditioner comprises a compressor, an indoor unit heat exchanger, an outdoor unit heat exchanger, a solar module and a four-way valve, wherein an air suction port and an exhaust port are formed in the compressor; and the solar module is connected between the outdoor unit heat exchanger and the four-way valve. According to the solar air conditioner for improving the air conditioning heating performance, a heat pump technology is combined with a solar energy technology, so that air conditioning low-temperature starting performance can be enhanced, the outlet air temperature comfort can be improved, a modular design is used, the universality of the air conditioner is enhanced, the application temperature range of heat pump air conditioning is greatly expanded, and the solar air conditioner is environment-friendly and economical.

A snowmobile is provided that includes a frame, an engine, an endless belt drive system, and an air intake system for the engine. The frame has a forward portion and an aft portion. The engine is mounted to the forward portion and the belt drive system is mounted to the aft portion and is operatively connected to the engine. The engine is a turbocharged four-stroke type engine.

A heating mode control method of an air conditioner, comprises: obtaining an indoor temperature and calculating the difference between the indoor temperature and an indoor target temperature to obtain an indoor temperature difference as air conditioner running at heating mode; performing a coil temperature control process as the indoor temperature difference in a set indoor temperature difference range, wherein the coil temperature control process including: obtaining an indoor coil temperature and controlling the frequency of the compressor according to the indoor coil temperature and a coil target temperature. The application of the method can achieve the purpose of improving the heating effect by increasing the outlet air temperature, thus improving the heating performance of an air-conditioner.

The invention relates to the technical field of air conditioners and discloses a control method and device for an air duct type air conditioner and the air duct type air conditioner. When the air ducttype air conditioner is in a wind-feeling-free operation mode, temperature of a coil pipe in an indoor heat exchanger of the air duct type air conditioner is obtained, operation frequency of a compressor is adjusted according to temperature change of the coil pipe, thus when air outlet temperature is too low due to too low pipe temperature of the indoor heat exchanger, operation frequency of thecompressor is adjusted appropriately so as to increase air outlet temperature or to prevent further decrease of the air outlet temperature, generation of condensate water due to too low air outlet temperature is prevented, and user experience is promoted.

A cooling device includes a first cooling medium circuit for circulating a cooling medium that passes through a main body of an engine to a first heat exchanger, a second cooling medium circuit for circulating a cooling medium that passes through the main body to a second heat exchanger, a control valve that is commonly used in the first and second cooling medium circuits, and a control device. The control valve includes a rotatable rotor, and is configured such that a rotation range of the rotor includes a water stop section in which the circuits are both closed. The control device restricts output power of the engine in a period in which the rotation angle is in the water stop section, when the rotor rotates via the water stop section at an operating time of the control valve.

The invention discloses a method and a device for testing the heat exchange capability of a heat exchanger. The method comprises: building an analog internal circulation system and an analog external circulation system; operating the two systems connected with a heat exchanger; adopting differential pressure detection to obtain practical operation air quantity in the two systems; comparing with aset air quantity to regulate the two systems; and collecting the temperature data of the internal circulation inlet and outlet of the heat exchanger as well as the external circulation inlet and outlet of the heat exchanger at the same time to obtain the heat exchange capability of the heat exchanger under different air quantities. The device comprises a master control mechanism, the analog internal circulation system, the analog external circulation system, temperature acquisition mechanisms and a differential pressure acquisition mechanism, wherein the master control mechanism is connected with the temperature acquisition mechanisms and the differential pressure acquisition mechanism, and the temperature acquisition mechanisms are respectively arranged in the analog internal circulationsystem and the analog external circulation system. The test method of the invention is convenient and simple, is easy to operate, and has high test data accuracy; and the device of the invention has low cost, simple structure, favorable stability of detection result and high data detection accuracy.

The invention provides an air-conditioning system and a control method thereof. The air-conditioning system comprises a front air outlet communicated with a first middle air channel and a second middle air channel, a first side air outlet communicated with a first side air channel, and a second air outlet communicated with a second side air channel. The control method achieves free conversion between front air output and side air output and combined multi-surface air output by opening and closing the air channels and comprises, when in a front air output mode and at a high air output speed, feeding air to a far position requiring cooling capacity / heating capacity; when in a side air output mode, accelerating air capacity circulation and rapidly reducing / increasing the air output temperature; when in a multi-face air output mode with a front air output mode and a side air output mode combined and at a super-large air supply range, greatly improving the uniformity of the indoor temperature to enhance the usage experience of users. The working modes of the air-conditioning system completely rely on the system according to preset time parameters or temperature parameters to achieve automatic determination and conversion, so that convenience and humanization can be achieved.

The invention relates to a composite paraboloid solar collector. The solar collector comprises a Fresnel reflection collecting mirror array and a solar collector body. The Fresnel reflection collecting mirror array is arranged under the solar collector body. A collector part of the solar collector body is a collector pipe, the outer wall face of the collector pipe is coated with an absorption coating, and the upper wall face of the collector pipe is a composite paraboloid composed of a heat-isolation protective layer and a secondary reflection mirror. The lower wall face of the solar collector body is composed of two layers of glass faces. The upper wall face and the lower wall face of the solar collector body define a closed cavity to form a layer of air wall. The two-layer glass design is adopted, and advantages of a composite paraboloid solar collector without heat-isolation measures and advantages of a composite paraboloid solar collector with a vacuum glass pipe are combined; under the situation that heat losses are not reduced, integration complexity of a system is effectively reduced, the structure is simple, manufacturing and operation cost is low, and safety and stability of the solar collector are improved.

The invention provides an air-conditioning system and a control method thereof. The air-conditioning system comprises a front air outlet communicated with a first middle air channel and a second middle air channel, a first side air outlet communicated with a first side air channel, and a second air outlet communicated with a second side air channel. The control method achieves free conversion between front air output and side air output and combined multi-surface air output by opening and closing the air channels and comprises, when an indoor fan works in a high air output mode and the indoor shows high refrigerating or heating requirements, utilizing a double-side air output mode to accelerate air capacity circulation, to rapidly reduce / increase air output temperature and further to achieve high adjustment capacity; when the indoor fan works in a middle air output mode, utilizing a three-face air output mode to enlarge the air supply range, improve the uniformity of the indoor temperature and meanwhile to reduce noise; when an outdoor unit works in a low air output mode and the indoor shows low refrigerating or heating requirements and is in a temperature stabilizing period, utilizing a high-speed middle air output mode to input relatively small cooling capacity / heating capacity and meanwhile to supply air to a far position requiring the cooling capacity / heating capacity.