14 results about "Outdoor temperature" patented technology

The invention discloses an air conditioner and controlling method thereof capable of cooling operation in the low temperature environment when the outdoor temperature is low. The air conditioner comprises a variable capacity compressor which can vary the capacity; an indoor heat exchanger used for evaporator at the time of the cooling operation; an outdoor temperature sensor for detecting the outdoor temperature; a controlling section which confines the lower limit capacity of the compressor when the detected outdoor temperature is within the predetermined region during cooling operation, andwhich variably controls the compressor capacity to be larger than the predetermined lower limit capacity based on load. Therefore, the invention can permit the substantially cooling operation in the environment that the outdoor temperature is low, and is benefit to avoid the indoor heat exchanger being frozen, so that the reliability of the equipment cooling circulation can be ensured. Further, the invention can avoid the phenomena of the compressor damage caused by liquid cooling agent flowing in by controlling the speed of indoor fan during cooling operation.

The invention discloses a water multi-copy air conditioner system and a control method of a variable frequency water pump thereof. The control method of the variable frequency water pump comprises the steps that real-time communication with an indoor unit on an indoor side is carried out, a real-time load rate of the indoor side is calculated; according to the current outdoor temperature, the real-time load rate of the corresponding proportion and an outdoor side water inlet and outlet temperature difference function value corresponding to the difference value of a set temperature of the current indoor unit on the indoor side minus a return air temperature are selected; and the current frequency of the variable frequency water pump is corrected through the real time load rate of the corresponding proportion and the corresponding outdoor side water inlet and outlet temperature difference function value. According to the control method of the variable frequency water pump, the indoor side load change condition is judged in real time through communication with an indoor air coil, the outdoor temperature, the set temperature difference in the room, the water temperature difference between the outdoor side and the outdoor side, and the current rotating speed of the water pump is comprehensively evaluated and judged, the running condition of a unit is adjusted, and the comfort of indoor users is ensured while the energy consumption of the unit is reduced.

The invention discloses an intelligent control method for a fresh air handling unit. The control method comprises the following steps: (1) monitoring indoor and outdoor temperature values, an indoor CO2 concentration value and a PM2.5 concentration value in real time; and (2) firstly, adjusting the openness of a fresh air valve according to the monitored indoor and outdoor temperature values and an indoor temperature priority algorithm, and when the outdoor temperature or indoor temperature is in a preset range, calculating and executing the openness of the fresh air valve according to the monitored CO2 concentration value, the PM2.5 concentration value and an air quality balance algorithm. The invention further provides the fresh air handling unit applying the control method. By the adoption of the indoor temperature priority algorithm and the air quality balance algorithm, the indoor temperature can be guaranteed preferentially under any working condition, and then the indoor PM2.5 concentration and the indoor CO2 concentration are effectively controlled, so that the environmental quality of air in a classroom is guaranteed, and the comfortable sensation of a student to a learning environment is enhanced; and the operation duration of the fresh air handling unit is preset according to a class period and background noise in the classroom, so that no influence on the class teaching is caused during the operation of the fresh air handling unit, and a good learning environment is supplied to the student.

The invention discloses a control method for guaranteeing stable operation of an air source heat pump at the low exhaust temperature of -40 DEG C, and belongs to the technical field of low-temperatureoperation. A compressor communicates with an indoor heat exchanger, an outdoor heat exchanger and an economizer, and the indoor heat exchanger communicates with the economizer. The economizer communicates with the outdoor heat exchanger. When a unit operates, the outdoor temperature is measured; if the outdoor temperature is higher than a set value, the opening degree of a main electronic expansion valve is adjusted, and the exhaust temperature is adjusted; if the outdoor temperature is not lower than 60 DEG C, the opening degree of an air supply electronic expansion valve is adjusted, and air supply is carried out on the compressor; if the outdoor temperature is lower than 60 DEG C, air supply is not carried out on the compressor, and the process is finished if the standard is met; and if the outdoor temperature is lower than the set value, the opening degree of the main electronic expansion valve and the opening degree of the air supply electronic expansion valve are adjusted, the oil temperature is judged, and the process is finished if the standard is met. According to the control method, the air source heat pump can still stably operate in the low-temperature environment of -40 DEG C, the low-temperature performance of the unit is greatly improved, and the stability of unit operation is improved; and wet compression is avoided, and the advantages of being easy to control,high in practicality, high in stability and the like are achieved.

The invention discloses an ultra-low ambient temperature air source heat pump unit using the daily range of the outdoor temperature of a heat storage balance chamber. The heat pump unit comprises a quasi-secondary (two-stage) compressor, an indoor heat exchanger, an economist, a main electronic expansion valve, an outdoor heat exchanger, a first auxiliary electronic expansion valve, a second auxiliary electronic expansion valve, an energy storage water tank, a first solenoid valve, a second solenoid valve, a circulating water pump, a four-way reversing valve, and a gas liquid separator. Duringthe day, at the noon with the not very low outdoor temperature, the unit has excess heat stored in the energy storage water tank, when the outdoor temperature is very low at night, the unit uses thestorage heat to heat and gasify the compressor for gas supplement, the heat absorbed from the outside absorption of the unit is equivalent to the sum of the heat absorbed from the environment of the outdoor heat exchanger and the heat absorbed from the heat storage water of the gas supplement, when the operating state of the compressor is unchanged, the unit heat can be increased by 32% or higher,and the heat requirements in the ultra-low temperature environment of the unit are met, so that the daily range of the outdoor temperature is balanced.

An intelligent with abnormality alarm which may comprise a housing, jacks in the surface of the housing and a conductive component arranged within the housing, wherein the housing is internally provided with a single chip processor as well as a current detection module, a voltage detection module, an outdoor temperature detection module, an indoor temperature detection module, a display module and a power supply module which are electrically connected with the single chip processor respectively. The power supply module is connected with the display module to power it. The socket may be used to carry out a real-time monitoring without making modification to the software and hardware. After applying the air conditioner socket of the present invention, the user may replace the socket of the air conditioner of a corresponding model him or her, i.e., the monitoring of an installed air conditioner may be accomplished with a minimum cost.

The invention provides an air conditioner control method and device, an air conditioner and a storage medium, and relates to the technical field of air conditioners. The air conditioner control methodcomprises the following steps: acquiring an indoor temperature range, an outdoor temperature range and an operating frequency range of a compressor of an air conditioner in a non-mute mode within preset time; and making the air conditioner enter a night mute mode, and controlling the operating parameters of the air conditioner in the sleep stage, the deep sleep stage and the morning stage in themute mode of the air conditioner according to the indoor temperature range, the outdoor temperature range and the operating frequency range of the compressor of the air conditioner in the non-mute mode within the preset time. According to the control method, the night mute mode is divided into the three stages, different mute adjustment is carried out according to the different stages and different requirements of users in the different stages, requirements of users are met, and self-adaptive night mute control is realized.

The invention relates to a prefabricated external wall panel for a PCM (phase change material) wrapped by a steel grating aluminum film and a preparation method thereof. The prefabricated external wall panel comprises an internal vane-board, an external vane-board and a phase change composite insulating layer, and the phase change composite insulating layer comprises a core plate, insulating tinsel and a support connecting box; and the core plate is integrally made from a phase change material, the support connecting box comprises a steel grating skeleton and a concrete intercepting web, and gaps between the support connecting box and the core plate form a cavity together. An outer wall of the steel grating skeleton is connected with an inserting rod, the external vane-board and the internal vane-board are respectively connected with the support connecting box through the inserting rod, and two ends in a width direction of the prefabricated external wall panel are corresponding to a convex head end and a concave head end which form pass lengths respectively. The prefabricated external wall panel is good in connecting performance, has advantages of storing energy and reducing indoor and outdoor temperature difference, and realizes the target of combining building energy conservation with a fabricated building.

The invention relates to the field of glass curtain walls, and discloses an energy-saving and environment-friendly double-layer glass curtain wall and an energy-saving and environment-friendly double-layer glass curtain wall group. The glass curtain wall comprises an outer-layer glass curtain wall and an inner-layer glass curtain wall, a sealed air cavity is formed by an interlayer between the outer-layer glass curtain wall and the inner-layer glass curtain wall, an air outlet capable of being opened and closed is formed in the top of the air cavity, and an air inlet capable of being opened and closed is formed in the bottom of the air cavity. The building ventilation system has the beneficial effects that sufficient ventilation quantity of a building can be guaranteed under the conditionthat the indoor and outdoor temperature difference is not large in an area with relatively mild four-season climate or unobvious seasonal change.

The invention provides an intelligent curtain system, which relates to the field of intelligent control, and comprises a plurality of electric curtains arranged in a window in parallel, a first temperature sensor and a first light brightness sensor arranged outside the window, and a second temperature sensor and a second light brightness sensor arranged in the window, the controller is electrically connected with the first temperature sensor, the first light brightness sensor, the second temperature sensor, the second light brightness sensor and the electric curtain and comprises a setting module and a control module, and the control module is used for setting the setting module according to indoor and outdoor temperature detection data and light brightness detection data. And comparing with a light brightness standard value and a temperature standard value, and selecting the electric curtain corresponding to the light transmission parameter and the heat insulation parameter by combining the weight value, so as to carry out comprehensive control on the electric curtain. The problems that in the prior art, an intelligent curtain can only solve the shading problem, and the indoor environment cannot be optimal through comprehensive control over the curtain are solved.

The invention discloses sound-insulating and heat-insulating glass. The glass comprises an installation frame, a glass body, a sliding rail, a first glass substrate, an anti-static coating, a heat-insulating layer and a sound-insulating layer, wherein the installation frame is internally provided with the glass body, the first glass substrate is arranged in the glass body, and the anti-static coating is arranged on the surface layer of the bottom of the first glass substrate; the heat-insulating layer is arranged on the surface layer of the top of the first glass substrate, a second glass substrate is arranged on the surface of the top of the heat-insulating layer, an ultraviolet resistant coating is arranged on the surface layer of the top of the second glass substrate, and the third glass substrate is arranged on the surface layer of the top of the ultraviolet resistant coating; the sound-insulating layer which is a vacuum layer is arranged on the surface layer of the top of the third glass substrate, and the fourth glass substrate is arranged on the surface layer of the top of the sound-insulating layer. According to the sound-insulating and heat-insulating glass, by arranging the heat-insulating layer, transfer between indoor temperature and outdoor temperature can be effectively blocked, the indoor temperature is kept to be stable, and a user feels comfortable.

The invention provides an indoor natural radiating device. The indoor natural radiating device comprises a wall surface and a plurality of air guiding pieces with the cut-off bottoms. The wall surfaceis provided with a plurality of fixed holes and provided with an indoor side and an outdoor side. The air guiding pieces are arranged in the corresponding fixed holes in a penetrating mode and provided with small-hole-diameter sections and large-hole-diameter sections which communicate with each other. The small-hole-diameter sections are fixed to the corresponding fixed holes in a penetrating mode, a part of the small-hole-diameter sections is exposed on the indoor side, the other part of the small-hole-diameter sections is exposed on the outdoor side, and the large-hole-diameter sections are located on the outdoor side. Recycled plastic bottles which are hollow after the bottoms are cut off can be utilized to be arranged on the wall surface of a building or the iron sheet wall surface of an iron sheet house, so that the temperature of air flowing to the indoor space in a guided mode is lower than that the outdoor temperature, and accordingly the effects of indoor natural radiating and cooling are achieved.