39results about "Efficient regulation technologies" patented technology

A capacity control algorithm for a multiple compressor liquid chiller system is provided wherein the speed and number of compressors in operation are controlled in order to obtain a leaving liquid temperature setpoint. In response to an increase in the load in the chiller system, the algorithm determines if a compressor should be started and adjusts the operating speed of all operating compressors when an additional compressor is started. In response to a decrease in the load in the chiller system with multiple compressors operating, the algorithm determines if a compressor should be de-energized and adjusts the operating speed of all remaining operating compressors when a compressor is de-energized.

A control system controls adaptively an operation of a vapor compression system. The control system includes a memory for storing a mapping relationship between control inputs of the vapor compression system, and a processor for executing a supervisory controller and an optimization controller. The supervisory controller controls the operation of the vapor compression system using a set of control inputs selected according to the mapping relationship. The optimization controller modifies the mapping relationship in response to the operation of the vapor compression system.

Apparatuses, methods and systems directed to reducing mineral buildup on drift eliminators of a cooling tower. Some embodiments of the invention allow irrigation of the drift eliminators of the cooling tower with fluid in the basin of the cooling tower to reduce mineral buildup. In other embodiments, the systems disclosed can be integrated with the drift eliminators to provide constant irrigation of to reduce mineral buildup. In some other embodiments, a control unit is used to selectively irrigate the drift eliminators based on the fluid temperature in the basin and the temperature inside and outside of the cooling tower.

The invention discloses a freezing device. When the opening of the electronic expansion valve (14) is less than the specified opening, or the superheat of the evaporator (15) is greater than the specified superheat, it is judged that the refrigerant circulation is insufficient, and the evaporator fan ( 22) The air volume is reduced.

The invention discloses an air-conditioner and a method for switching the working mode of the air-conditioner. The method solves the problem of high noise generated when the working mode of the air-conditioner is switched in the prior art. The air-conditioner comprises an indoor unit, an outdoor unit and a liquid pipe, a low-pressure air pipe, a low-pressure air pipe valve, a high-pressure air pipe and a high-pressure air pipe valve connected between the indoor unit and the outdoor unit; the air-conditioner also comprises a liquid pipe throttling device, a low-pressure air pipe throttling device and a high-pressure air pipe throttling device, wherein the liquid pipe throttling device is connected in series in the liquid pipe; the low-pressure air pipe throttling device is connected in parallel with the low-pressure air pipe valve; and the high-pressure air pipe throttling device is connected in parallel with the high-pressure air pipe valve. By using the technical scheme, the pressureof a coolant can be changed stably, and heat expansion and cold contraction effects are reduced, so that the noise generated when the working mode of the air-conditioner is switched is reduced.

The invention belongs to the technical field of air conditioners, and specifically provides a control method of an air conditioner and the air conditioner. The method aims to solve the problem that anair speed control method of the air conditioner is poor in user experience. The control method of the air conditioner comprises the following steps that a surface temperature of a human body and an indoor environment temperature are acquired, the surface temperature of the human body is compared with the indoor environment temperature, and an air speed of an air supply fan of the air conditioneris selectively adjusted based on a comparison result. Through the control mode, the control method of the air conditioner can selectively adjust the air speed of the air supply fan according to the comparison result of the surface temperature of the human body and the indoor environment temperature, so that a user can always be in a comfortable environment, the situation of human discomfort causedby the too high or too low air speed is avoided, and the use experience of the user is improved.

The invention relates to a progressive filter cake and water film two-level filter air purifying and humidifying device, and belongs to the technical field of air purifying and humidifying. The devicemainly comprises an upper grid plate, an LCD liquid crystal display, a temperature and humidity sensor, a side grid plate, a box body, a fan, a roll type filter, a liquid accumulation groove, a conical plastic net, a fiber thin film, a water pipe, a water tank, a water storage groove, a water pump, a piston and the like; according to first-level filter, through the roll type filter, a filter cakeis formed, through progressive replacement, filtered air is more stable in quality, according to second-level filter, a water film is formed on the filer film on the conical filer net, purifying of bacteria, dust and the like can be achieved while humidifying is carried out, according to the air purifying and humidifying device, the humidifying purifying manner and the purification manner can beswitched, the different needs of the user can be met, the progressive filter cake and water film two-level filter air purifying and humidifying device is high in efficiency, low in energy consumption,simple, and stable in filter effect, the indoor air can be effectively purified, and the device has the wide application prospect in the site with the particle requirement for the air quality.

The invention provides a control method, an air conditioner and a computer readable storage medium. The control method comprises the following steps that acquiring abnormal weather information of a region where the air conditioner is located; running parameters of a draught fan of an outdoor unit in the air conditioner are determined according to the abnormal weather information; the draught fan of the outdoor unit is controlled to operate according to the running parameters. According to the technical scheme, under different weather conditions, the draught fan of the outdoor unit is controlled to operate according to the running parameters corresponding to the weather conditions, so that the possibility of exception or fault of the outdoor unit caused by weather is effectively reduced, the aging of the outdoor unit is delayed, and the maintenance cost of the outdoor unit is reduced.

A vapor compression cooling system includes a centrifugal compressor(s) for compressing a primary fluid in a cycle including at least two compressions, and a control module for controlling the centrifugal compressor dependent upon at least a condition of a secondary fluid. The module controls a power of the centrifugal compressor by adjusting a speed of the motor driving the compressor and/or an opening of guide vanes associated with at least one impeller. The module may also control a pressure drop of a primary fluid moving through at least one expansion device. The at least two compressions may be made in parallel or in series. A related method includes compressing a primary fluid in a first and a second compression cycle and adjusting a parameter of the compressor dependent upon a calculated desired power of the compressor.

The invention discloses a method for preventing a valve core position of an electronic expansion valve from offsetting and a corresponding protective cover. According to the method for preventing the valve core position of the electronic expansion valve from offsetting, a protective cover capable of generating magnetism is arranged at the exterior of a valve body of the electronic expansion valve, and the valve core position of the valve body is prevented from offsetting due to vibration in the transport process by using the magnetism generated by the protective cover and an interaction force generated by a magnetic rotor in the valve body. The transport protective cover of the electronic expansion valve comprises a protective cover main body capable of generating magnetism, and the protective cover main body is provided with a hollow cavity matched with a sleeve of the electronic expansion valve. The magnetic rotor positioned in the sleeve of the electronic expansion valve and the protective cover main body positioned at the outer end of the sleeve are mutually attracted. The protective cover main body capable of generating magnetism is arranged at the exterior of the electronic expansion valve, and the magnetic piece in the protective cover main body can be mutually attracted with the magnetic rotor of the electronic expansion valve to fix the valve core during transporting; and the protective cover has the advantages of simple structure, convenience in use and capability of being reused.

The invention discloses a control method for an air conditioning system, and belongs to the technical field of air conditioning control. The control method includes the steps that a revolving speed ofan indoor fan of the air conditioning system during a last shutdown is obtained; first prompt information is generated when the revolving speed of the indoor fan is less than a set speed; when the revolving speed of the indoor fan is greater than or equal to the set speed, second prompt information is generated; and the first prompt information or the second prompt information is sent to a mobileterminal. According to the control method for the air conditioning system, the revolving speed of the indoor fan of the air conditioning system during the last shutdown is obtained, different promptinformation is generated according to the magnitude of the revolving speed of the indoor fan, the prompt information generated is sent to the mobile terminal so that a user obtains the information conveniently, the user is prompted to adjust operating parameters of the air conditioning system in time, and the situation that user experience is affected due to failure of the air conditioning systemis avoided.

The invention provides a constant flow control method and system, and belongs to the technical field of fresh air equipment. The method comprises the following steps that firstly, real-time temperatures in a first air inlet cavity, a second air inlet cavity and a first air outlet cavity are obtained through a temperature detector, and the fresh air temperature efficiency Vo is obtained through calculation; and secondly, real-time temperatures in a second air inlet cavity, a second air outlet cavity and a first air inlet cavity are obtained through the temperature detector, and the exhaust temperature efficiency Vi is obtained through calculation. When the absolute value of delta V is larger than the target efficiency difference Vs, a controller 6 can adjust the rotating speed of a fresh air fan 7 and/or an air return fan 8 to enable the absolute value of delta V to be smaller than or equal to the target efficiency difference Vs, and the flow in a fresh air channel and the flow in an air return channel are adjusted to be within the reasonable difference range.

The invention provides a humidifier with a purifying function. The humidifier with the purifying function includes a base, a water storage tank which is arranged on the base, a water-adding pipe is arranged at the broadside of the water storage tank, and a filter is arranged at the bottom of the water storage tank; an atomization portion is arranged at the right side of the filter, the atomizationportion is provided with an atomizer, a spray-guiding pipe is arranged above the atomizer, and a spray-outlet is arranged above the spray-guiding pipe; and an air purifier is arranged above the waterstorage tank, and an air quality detector is arranged above the air purifier. Air is detected by the air quality detector and purified by the air purifier, fresh air can be guaranteed, and impuritiesin the water storage tank is collected through a impurity-collecting device to guarantee clean spray which passes through the humidifier with the purifying function; the second impurity-removing is carried out through a filtering and impurity-removing device, spray which passes through the humidifier is healthy for a human body, and the human cost is reduced; and the temperature detection is carried out through the temperature detector, then the temperature regulation is carried out through controlling a temperature regulating device, the temperature is regulated following the changes of weather, and the environment of work and life is more comfort.

The invention discloses an operation control method of an air conditioner, the air conditioner, an effect evaluation method of torque compensation control parameters of a compressor, an operation control device and a computer readable storage medium. The air conditioner comprises the compressor and an acceleration sensor arranged on the peripheral side of the compressor. The operation control method comprises the following steps: acquiring vibration acceleration measured by an acceleration sensor; extracting circumferential vibration acceleration from the vibration acceleration; differentiating the circumferential vibration acceleration to obtain the circumferential vibration speed of the compressor; when the circumferential vibration speed is larger than a preset speed threshold value, operation parameters of the air conditioner are obtained, a preset torque compensation parameter table is inquired according to the operation parameters, and torque compensation control parameters are obtained; and the torque compensation control parameters are called to carry out torque compensation on the compressor. The adaptive adjustment of the torque compensation control parameters can be realized, and the problem of vibration noise deterioration caused by electrical parameter fluctuation after the air conditioner finished product machine is used for a long time in an actual environment is solved.

The invention relates to the technical field of air conditioners, and discloses an air conditioner, a method and device for controlling the air conditioner and a storage medium. The air conditioner comprises a mosquito killing device located on one side of an air outlet of the air conditioner and a control device in electric control connection with the mosquito killing device. The method comprises the steps that under the condition that it is determined that mosquitoes exist in an indoor area where the air conditioner is located, current personnel number information of the indoor area is obtained; determining a current air conditioner operation strategy matched with the current personnel quantity information; and the air conditioner is controlled to operate according to the current air conditioner operation strategy, a mosquito killing device in the air conditioner is controlled to be in an operation state, and carbonic acid gas storage equipment which is connected with the mosquito killing device and located outside the air conditioner is started. Therefore, the automatic mosquito eradication function of the air conditioner is achieved, and the intelligence of the air conditioner is improved.