51results about How to "Reduce indoor temperature fluctuations" patented technology

The invention discloses a defrosting control method of a heat pump air conditioner unit. According to the outdoor environment temperature T4 of heat pump air conditioner operation, regional defrosting is conducted, and different defrosting control modes are conducted within regions of different temperatures. The outdoor environment temperature T4 during initial heat pump air conditioner operation is divided into N regions, different defrosting control methods are used in all regions, a controller is used for counting the air conditioner regional defrosting number when a machine is started up and heated, a special defrosting mode is conducted when the number reaches n, the entry condition of the special defrosting mode is the same as that of regional defrosting modes, and the exit condition is conducted in accordance with different control rules. By the aid of the method, the defrosting is conducted quickly, the indoor temperature fluctuation is small during defrosting, the heating amount is large and the heating can be conducted continuously. Simultaneously, the defects that the defrosting time is long and the defrosting is not complete due to hot gas bypass at the ultralow temperature are avoided. Users feel comfortable.

The invention discloses an integral type thermal insulation building, which belongs to the technical field of building engineering. The problem to be solved is to provide the integral type thermal insulation building. The adopted scheme is that the integral type thermal insulation building at least uses one of an inorganic thermal insulation structure layer and an inorganic thermal insulation layer, wherein the inorganic thermal insulation structure layer is formed by combining one or two of inorganic thermal insulation load-bearing concrete and inorganic thermal insulation load-bearing building blocks; and the inorganic thermal insulation load-bearing concrete comprises the following components in a mixing weight ratio (kg/m<3>) of concrete composite light bone admixture to cement to sandto stone to porcelain granule to fly ash to water to concrete admixture of (6-225):(200-800):(300-700):(500-1,600):(150-650):(10-600):(80-400):(0.1-200). The integral type thermal insulation buildingcan be widely applied to the technical field of buildings.

The invention discloses a building outer wall structure with double shaping phase change material layers. The building outer wall structure sequentially comprises the outer shaping phase change wall board layer, a first thermal insulation layer, a wall body layer, a second thermal insulation layer, the inner shaping phase change wall board layer from outside to inside, wherein the outer shaping phase change wall board layer and the inner shaping phase change wall board layer are respectively made of phase change materials of phase change temperatures of Tm1 and Tm2, the phase change temperature Tm1 is set to be minimum in cold load all year round in the expositing environment of the phase change temperature Tm1, and the solid phase change materials melt into liquid phase change materials when the wall board layer temperature is equal to or higher than Tm1; the phase change temperature Tm2 is set to be minimum in heat load all year round in the exposing environment of the phase change temperature Tm2, and the solid phase change materials melt into liquid phase change materials when the wall board layer temperature is equal to or higher than Tm2. The invention further designs the components and proportion of the phase change materials of the two shaping phase change wall board layers. By the building outer wall structure which is compact, high in adaptability, convenient to manufacture and maintain later, and the like, outer wall cold load and heat load can be lowered effectively, and overall energy consumption is lowered evidently.

The invention relates to an air conditioner and a control method thereof. The control method comprises the following steps that the indoor environment temperature and the indoor environment relative humidity of a space where an air conditioner indoor unit of the air conditioner is located are detected under a refrigeration operation mode; the air dew point temperature of the indoor environment iscalculated according to the indoor environment temperature and the indoor environment relative humidity; the target coil temperature of the air conditioner is determined according to the interval where the indoor environment temperature and the indoor environment relative humidity are located and the calculated air dew point temperature; and the operation frequency of a compressor of the air conditioner is determined through coil temperature PID control. According to the air conditioner and the control method thereof, the temperature of the indoor coil is accurately controlled according to theindoor temperature and humidity, in the whole refrigeration operation process, the indoor temperature and humidity are simultaneously controlled, the operation mode of the air conditioner is not required to be adjusted by an user according to the indoor environment, or, the set temperature deviating the intention of the user is not required to be set, and the intelligence degree of the air conditioner and the use experience of the user are improved.

The invention relates to an air conditioner and an anti-condensation control method thereof. The anti-condensation control method comprises the following steps: in a refrigerating operation mode, theindoor environment temperature of an air conditioner indoor unit of the air conditioner and the indoor environment relative humidity are detected; and when the indoor environment temperature is higherthan the indoor environment temperature threshold, and the indoor environment relative humidity is higher than the indoor humidity threshold, the air conditioner is controlled to enter an anti-condensation mode. In an anti-condensation mode, the first electronic expansion valve openness is calculated through the exhaust temperature PID control, the second electronic expansion valve openness is calculated through the coiler temperature PID control, and the smaller one of the first electronic expansion valve openness and the second electronic expansion valve openness is used as the actual electronic expansion valve openness of the air conditioner, so that the excellent anti-condensation effect is achieved, and the problem of excessive refrigeration caused by use of the coiler temperature ascontrol parameters in the prior art is prevented. In addition, the relatively stable temperature and the low fluctuation can be guaranteed through the PID control algorithm.

The invention relates to an air conditioning system. The air conditioning system comprises a refrigerating circulation component, a total heat exchange core body, a return air flow path component anda fresh air flow path component, wherein the refrigerating circulation component comprises a compressor, a first heat exchanger and a second heat exchanger that are in loop connection; the return airflow path component is used for conveying part of indoor air to the total heat exchange core body for heat exchange, and mixing the part of heat exchanged indoor air with the rest indoor air in the return air flow path component, and mixed indoor air is discharged outdoors after exchanging heat with the first heat exchanger; and the fresh air flow path component is used for conveying part of outdoor air to the total heat exchange core body for heat exchange, and mixing part of heat exchanged outdoor air with the rest outdoor air in the fresh air flow path component, and mixed outdoor air is delivered indoors after exchanging heat with the second heat exchanger. Thus, exhaust air, i.e., the discharged indoor air, can be increased in temperature while fresh air, i.e., the conveyed outdoor air, is heated, thereby realizing frostless operation of the first heat exchanger during low-temperature heating; the indoor temperature is small in fluctuation, and comfort is high. The invention further provides a control method of the air conditioning system.

The invention provides an air-conditioner defrosting control method and an air-conditioner. The air-conditioner comprises a compressor, an indoor side heat exchanger, a flash evaporator, a first throttling element, a first two-way valve and an outdoor side heat exchanger. In a heating mode, the first throttling element is started, the first two-way valve is closed, refrigerant sequentially passesthrough the compressor, the indoor inner side heat exchanger, the flash evaporator, the first throttling element and the outdoor side heat exchanger, and returns into the compressor to form a circulating passage. In a defrosting mode, the first throttling element is closed, the first two-way valve is opened, and the refrigerant sequentially passes through the compressor, the indoor side heat exchanger, the flash evaporator, the first two-way valve and the outdoor side heat exchanger, and returns to the compressor to form a circulating passage. According to the air-conditioner defrosting control method, in the defrosting mode, the indoor side heat exchanger keeps non-stop heating, all refrigerant participates heat exchange, indoor temperature fluctuations can be reduced, and the heating comfort is improved.

The invention relates to phase-change roof self-insulation ceramsite concrete, and belongs to the technical field of building materials. The problems that existing ceramsite concrete is low in strength property and poor in energy storage effect can be solved. The phase-change roof self-insulation ceramsite concrete comprises, by mass, 30%-40% of cement, 20%-35% of pottery sand, 8.0%-13% of phase-change material, 10%-20% of ceramsite and 5.0%-8.0% of coal ash. The phase-change material uses the ceramsite as a loaded carrier. According to the concrete, the phase-change material is added and loaded onto the ceramsite, hence, a good energy storage effect can be achieved, and a large amount of heat can be stored or released when phase change happens; the phase-change latent heat range is wide, indoor temperature fluctuation is reduced, and cost is lowered; meanwhile, the strength property of the concrete can be guaranteed.

The invention discloses a phase-change energy storage material filled with ardealite, a phase-change energy storage plate and a preparation method thereof, and belongs to the technical field of building materials. The phase change energy storage material comprises the following components in parts by weight: 20-75 parts of ardealite, 5-38 parts of an inorganic phase change material, 2-25 parts ofexpanded graphite, 0-1 part of citric acid, 0-3 parts of polypropylene fibers, 0.1-3 parts of a water reducing agent and 20-85 parts of water. When the phase change temperature is reached, the phase state is changed, heat storage or heat release can be achieved under the condition that the temperature is basically kept unchanged, fluctuation of the indoor temperature is reduced, and the living comfort is improved. According to the invention, the components and the ratio of the phase change energy storage material are adjusted; the ardealite-filled phase change energy storage plate is preparedby adopting a filling molding mode, so that the permeability of a phase change material can be reduced, the utilization rate of phase change heat is improved, and durability of the phase change energystorage plate is prolonged.

The invention provides an air conditioner and a control method of the air conditioner, wherein the air conditioner comprises a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a throttling device, a refrigerant heating device, a valve body and a temperature control device, wherein the refrigerant heating device is connected into a system of the air conditioner in series, and is used for heating refrigerant in the system of the air conditioner; the valve body is connected with the throttling device in parallel and is opened when the air conditioner performs frosting; the temperature control device is used for detecting the temperature of the refrigerant at a refrigerant outlet of the compressor in a heating mode of the air conditioner, and controlling the refrigerant heating device to work according to the temperature of the refrigerant. According to the air conditioner disclosed by the invention, the refrigerant heating device is connected into the air conditioning system in series, the valve body and the throttling device are connected in parallel, the temperature control device is capable of controlling the refrigerant heating device to work according to the temperature of the refrigerant at the refrigerant outlet of the compressor, compared with the prior art, the air conditioner is capable of heating indoors in a sustainable manner, the condition that a traditional air conditioner absorbs heat from the indoor environment for frosting of the outdoor heat exchanger during frosting is avoided, and the indoor temperature fluctuation is small.

The invention belongs to the technical field of an air conditioner and discloses a constant-frequency air conditioning system and a control method thereof. In the constant-frequency air conditioning system, a compressor is set to comprise two compression chambers which can be opened independently or opened simultaneously; the compressor is also provided with a data acquisition module used for acquiring an indoor temperature and a set temperature in real time; by adopting the constant-frequency air conditioning system, cold output or heat output can be automatically adjusted according to thermal load demands so that influences, on comfort, of the indoor temperature affected by frequent start and shutdown can be prevented; and meanwhile, compared with a variable-frequency air conditioner, the constant-frequency air conditioning system is greatly lowered in design cost and is greatly improved in comfort. According to the control method of the constant-frequency air conditioning system provided by the invention, air conditioning load is determined according to an absolute value of the difference value of the indoor temperature and the set temperature, the difference value is divided into different ranges, and the compressor adopts different output combination in different range states so as to work at different output power; and in a working process of the air conditioner, the indoor temperature fluctuation is small and the use comfort is high.

The invention is a small ultrathin horizontal ceiling water-ring double-system room air-conditioner, its technical character: (1) single air conditioner is composed of two sets of independently-working water-ring compressed-steam refrigerating systems and a set of electrical apparatus control systems, and each set of refrigerating systems includes ultralow power full-closed compressor, evaporator, condenser, four-way switching valve, throttling expanding system; (2) the main parts of the systems are not distributed the same plane in a up- and down- overlapping mode and the height of the whole machine is by far less than the length and width; (3) the compressor is a unconventional ultralow power full-closed one and the power of each compressor is less than 600W. It reduces the thickness by 20% above and can be mounted in building house with smaller storey height; reduces noise by 5-15%; doubles control precision and enhances the heat utilization ratio by 30-50%; reduces the starting current by one half and has constant-temperature dehumidifying function.

The invention relates to the field of air conditioner control and especially relates to a regulating system for a fixed frequency machine, a regulating method thereof and a fixed frequency air conditioner. In the regulating system, a compressor, an indoor side evaporator and an outdoor side condenser are formed into a circulation loop; a flow regulating structure is arranged on a pipeline between the indoor side evaporator and the outdoor side condenser; a temperature measuring structure is arranged at an air inlet of the indoor side evaporator; a low-pressure air inlet of the compressor is connected with the pipeline between the flow regulating structure and the outdoor side condenser through a first return pipe; and a control valve is arranged on the first return pipe. The opening degree of the flow regulating structure is controlled according to the temperature at the air inlet of the indoor side evaporator and a comparison result between the temperature and a preset temperature, so that the refrigerant flow between the indoor side evaporator and the outdoor side condenser can be adjusted, the heat exchange volume of the indoor side evaporator can be regulated, and the indoor temperature can be regulated. The regulation has little influence on the indoor temperature, and the startup and shutdown are not required in a regulation process, so that no higher noise is generated, and the service life of the compressor is prolonged.

The invention provides composite phase change material composition for a window frame. The composite phase change material composition is prepared from polyolefin, phthalate, a hydrocarbon mixture, acarbon material, a silicate material, a resin material and a polymer. The material composition can absorb or release a large amount of heat on the premise of unchanged size and unchanged performance in a phase change process, so that product performance stability is guaranteed, the problems about cold insulation and heat insulation of the window frame are solved, indoor temperature equalization ofa building is realized, indoor temperature fluctuation is reduced, start times of an air conditioner are reduced, energy consumption of the building is reduced remarkably, and energy using efficiencyis increased.

The invention discloses a split type air conditioner with a compressor installed indoors, comprising an air conditioner outdoor unit installed outdoors, an air conditioner indoor unit installed indoors, and a connecting pipe connecting the air conditioner outdoor unit and the air conditioner indoor unit, It is characterized in that: the outdoor unit of the air conditioner has an outdoor unit outlet grille, an outdoor unit fan, an outdoor unit connection pipe cut-off valve and a condenser; the outdoor unit outlet grille is arranged in the downwind direction of the outdoor fan, and the condenser Arranged in the leeward direction of the outdoor fan; the air-conditioning indoor unit has an indoor unit outlet grille, an indoor unit fan, an indoor unit connection pipe stop valve, an indoor unit condensate removal pipe, an evaporator and a compressor; the indoor unit outlet style The grille is arranged in the downwind direction of the indoor fan, and the evaporator is arranged in the leeward direction of the indoor fan, with the front facing the outlet grille. Arranged at the bottom of the air conditioner indoor unit.

The invention discloses a red mud-paraffin composite phase-change energy storage material which comprises paraffin and red mud. The mass ratio of paraffin to red mud is (0.4-0.55):(0.45-0.6). The invention also discloses a technical scheme for preparing the material through a mixed grinding process. Thermogravimetry and differential thermal analysis tests are adopted for representing the heat stability of the prepared phase-change energy storage material. The preparation method for the phase-change energy storage material disclosed by the invention is simple in process, convenient in operation and suitable for industrial mass production. When the phase-change energy storage material disclosed by the invention is used as a thermal insulation material for a building, the indoor and outdoor heat transferring amplitude of the building can be effectively reduced, the indoor temperature fluctuation can be reduced, the temperature scope suitable for a human body can be kept, the use of heat supply or air conditioner can be reduced and the energy-saving effect of the building can be realized.