301results about "Mechanical apparatus" patented technology

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.

The present invention provides devices and methods for removal of obstructive matter from the patients that are located inside or outside of the patient's endovascular system using rotational energy. One or more therapeutic agents may be delivered to the treatment location to further facilitate the removal process

A configurable ceiling lighting system for a grid ceiling comprising at least one and preferably a plurality of driver panels having a bottom and a defined perimeter sized to allow the driver panel to be set into and retained within the grid openings of a ceiling grid. The driver panel has at least one and preferably a plurality of electrical connectors accessible from the bottom of the driver panel. At least one and preferably a plurality of light modules are provided having a light source and an electrical connector complimentary to the electrical connectors of the panel drivers. The light modules can be operatively connected to the bottom of the ceiling panel drivers at selected connection points to produced desired arrays of ceiling lighting fixtures to meet particular lighting needs.

The invention discloses a control method of an air conditioning unit. The control method of the air conditioning unit comprises the steps of after receiving an input user command, obtaining temperature and humidity setting information in the user command, further calculating a temperature demand and a humidity demand of a user according to the temperature and humidity setting information, judgingthe priority of running cooling and dehumidifying of the air conditioning unit according to the temperature demand and the humidity demand, and adjusting a running logic of the air conditioning unit according to a judging result. The invention further discloses the air conditioning unit and a storage medium. According to the control method of the air conditioning unit, the air conditioning unit and the storage medium provided by the invention, the temperature demand and the humidity demand of the user are obtained through the received user command, the running logic of the air conditioning unit can be intelligently adjusted according to the temperature demand and the humidity demand of the user, and the interaction between the user and the air conditioning unit is increased while the running logic of the air conditioning unit is intelligently adjusted at the same time, so that the intelligence and the interactivity of the air conditioning unit are improved.

A light emitting sheet module includes a light guiding sheet to cover a plurality of key switches, at least one LED disposed on at least one end portion of the light guiding sheet, and a circuit board disposed on the one end portion of the light guiding sheet on which the LED is disposed. When the light emitting sheet module is, mounted on a switch board, it is capable of adaptation to key switches in a wide variety of forms and to illuminate the key switches with light emission of high brightness.

An optical lens for lighting fixture includes a body, which comprises a bottom surface and a light-exit surface at opposing bottom and top sides thereof, an elongated groove formed in the bottom surface, a light incident surface, a first intersection line and a second intersection line respectively connected between the two ends of the elongated groove and the bottom surface, a first line segment and a second line segment respectively connected between the light incident surface and the bottom surface, a first virtual line defined between the two ends of the first line segment, a first distance that is the shortest distance between the two ends of the first intersection line, and a SAGi that is the shortest distance between any point at the first line segment and the first virtual line and satisfies the equation: 0≦|SAGi/first distance|×100≦2.8.

The invention discloses an air conditioner and fresh air system predictive control method and system based on the indoor number of people. The control method comprises the following steps that a current indoor image and current indoor carbon dioxide concentration data are collected; according to the current indoor image and/or the current indoor carbon dioxide concentration data, the indoor numberof people is recognized; according to the current indoor carbon dioxide concentration data and the current indoor number of people, the temperature change amount and the carbon dioxide concentrationchange amount after the first preset duration are predicted; and the air conditioner and/or the fresh air system is adjusted according to the temperature change amount and the carbon dioxide concentration change amount. According to the control method, the indoor number of people can be accurately recognized according to the indoor image and/or the indoor carbon dioxide concentration data, and theair conditioner and/or the fresh air system can be accurately adjusted according to the indoor number of people, so that the accuracy of the number identification of people is effectively improved, then the accuracy of predictive control of the air conditioner and the fresh air system is improved, and the effects of being simple and easy to realize are achieved.

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 relates to a cascade heat pump drying system and a control method thereof. The cascade heat pump drying system is composed of a high temperature stage loop and a low temperature stage loop. Refrigerating fluid R134a is used in the high temperature stage loop, and refrigerating fluid R744 is used in the low temperature stage loop. Operation of the high temperature stage loop and the low temperature stage loop can be controlled according to the environment temperature so that the system can work normally within the wide environment temperature range from -20 DEG C to 43 DEG C, and the use requirement can be met.

The invention discloses an intelligent street lamp control system. The intelligent street lamp control system includes street lamp control terminals, street lamp monitoring sub-stations and a street lamp management center; the street lamp control terminals acquire the voltage, current and power information of street lamp nodes and upload the data to the street lamp monitoring sub-stations; the street lamp control terminals receive commands issued from the street lamp monitoring sub-stations and execute operation so as to realize switching control and brightness adjustment of street lamps; the street lamp control terminals analyze and process received data packets, and send and receive data through radio frequency transmission modules; and the street lamp monitoring sub-stations maintain the node information of all street lamp control terminals on roads where the street lamp monitoring sub-stations are located, and transmit corresponding data to the street lamp management center. According to the intelligent street lamp control system of the invention, a GPRS public wireless communication technology and short-distance wireless communication technology-combined scheme is adopted, and the advantages of the GPRS public wireless communication technology and the short-distance wireless communication technology can be combined, and therefore, the problem of high cost can be solved, the complexity of the system is reduced, and the intelligent street lamp control system is practical, is convenient to manage, assist in saving energy and can realize intelligent control.

The invention discloses a multifunctional integrated solar energy and wind energy monitoring street lamp which comprises a lamp pole, an integrated solar energy and wind energy monitoring street lamp device and a support for installing the integrated solar energy and wind energy monitoring street lamp device. The integrated solar energy and wind energy monitoring street lamp device comprises a control box, a solar power generation device, a wind power generation device, an automatic photovoltaic board cleaning device, an electric storage device, a camera and an LED lamp. The camera is connected with a mini-type network monitoring emission processor. LED screens are arranged on the periphery of the control box. The control box is installed on the lamp pole through the support. The multifunctional integrated solar energy and wind energy monitoring street lamp is compact in structure, small in occupied area, multifunctional and capable of greatly facilitating work and life of people; a solar photovoltaic board and a wind power generator supply power, energy is saved, and environment friendliness is achieved; the LED screens are installed to be used for advertising, a network monitoring system can remind a traffic management department in time to adjust the traffic vehicle jam condition, and road traffic safety is facilitated.

A light-emitting diode (LED) light source suitable for being electrically connected with a power line is provided. The LED light source includes an LED array, a power line communication (PLC) unit and a current control unit. The PLC unit is electrically connected with the power line, and the current control unit is electrically connected with the LED array and the PLC unit.

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.

Disclosed is a light appliance and a cooling arrangement, comprising a light appliance and a substantially sealed enclosure for the light appliance that gives off unwanted heat into surrounding air within the enclosure during operation. The enclosure has an external wall at least part of which is thermally conductive. A medium, cooler than the external wall of the enclosure, contacts the external wall. An air circulating device is provided for circulating air, heated by the electrical appliance or by the air circulating device, to the thermally conductive portion of the external wall for removing heat from the air by thermally dissipating the heat into the cooler medium through said thermally conductive portion.

The invention discloses a method, system and device of air injection of an air conditioning system and an air conditioner. The method comprises the following steps that the discharge temperature of a compressor and an adjusting parameter of an electronic expansion valve are obtained, and opening of the electronic expansion valve is adjusted according to the discharge temperature of the compressor and the adjusting parameter of the electronic expansion valve. The technical problem that in the prior art, the stability of air injection control and adjustment is low is solved.

A solar powered LED portable light tower. A solar powered LED portable light tower may comprise: one or more photovoltaic modules, an adjustable masthead, one or more lamps, one or more batteries, an inverter, a controller, and a base. The lamps may be light emitting diodes. The controller may be configured to turn on and off and dim said one or more lamps, and preferably comprises a motion sensor. The portable light tower may also comprise a concrete ballast, fork lift option, and/or a trailer option.

The invention discloses an intelligent family environment control method and system. The method comprises the following steps that the air pollution threshold value is preset; the user position is positioned in real time, the user speed is monitored, and the user state and the leaving distance are judged; and the indoor air quality is monitored in real time, purifier start control is conducted according to the user state, when a user is at home and the air quality exceeds the air pollution preset threshold value, a purifier is started, when the user leaves the home or the air quality does not reach the air pollution preset threshold value, the purifier is stopped, and when the user returns home, the needed air purification time is judged according to the current indoor air quality, the needed home returning time is calculated in combination of the user leaving distance and speed, the purifier start time is judged in combination of the needed air purification time and the needed user home returning time, and air in a room is purified when the user returns home. Through intelligent control, the user can enjoy the purified air all the time, and power saving and energy saving can be achieved with the maximum efficiency.

The invention relates to an air-condition radiation control method and system, wherein the air-condition radiation control method comprises the following steps: S1, detecting the first environment temperature value T1 within the specific scope of the position of an air conditioner external unit while an air conditioner is started; S2, acquiring the running time t of the air conditioner; S3, judging whether t is equal to or greater than M, wherein the M represents a first target time, if yes, executing the step S4; otherwise, returning to the step S2; S4, detecting the second environment temperature value T2 within the specific scope of the position of the air conditioner external unit; S5, judging whether the absolute value of the T1 and T2 is equal to or greater than A, wherein the A represents the target temperature difference value, if yes, executing the step S6, and otherwise, returning to the step S4; S6, controlling the air conditioner to enter into a heat dissipation mode. The air-condition radiation control method provided by the invention can accurately and intuitively reflect the heat dissipation condition of the air conditioner; the heat exchange capability of the air conditioner is enhanced, while the refrigerating/heating effect of the air conditioner is improved, damage to elements of the air conditioner, caused by poor heat dissipation, can be prevented, and the service life of the air conditioner is prolonged.

A multi-purpose solar lamp includes an illumination lamp powered by solar power, a positioning board detachably fixed onto a wall or any plane, and a plug-in part pluggable into the ground. The positioning board and the plug-in part can be simultaneously or alternately combined to the back of the illumination lamp to allow users to conveniently fix the illumination lamp to the wall or a wooden or concrete ground or plug the plug-in part into the ground/soil as needed to achieve a multi-purpose effect.

A subcooling heat exchanger and subcooling expansion valve in a refrigeration system provide subcooling of a pre-subcooled portion, for refrigerating a thermal load, of condensed refrigerant liquid by a pre-subcooling portion of the condensed refrigerant liquid. The amount of subcooling of the pre-subcooled portion is determined by measuring, with a pressure sensor, refrigerating suction pressure exerted by refrigerating compressors of the system. A controller then controls, based on the refrigerating suction pressure, modulation of mass of pre-subcooling portion, relative pre-subcooled portion, and expansion thereof in the subcooling expansion valve, which controls the amount of refrigerant heat exchanged, and therefore subcooling of pre-subcooled portion, between the pre-subcooling portion and the pre-subcooled portion in the subcooling heat exchanger. The pre-subcooling portion is then subsequently compressed by a subcooling compressor.