Control method and device of air conditioner system with R290 refrigerant
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An air-conditioning system and control method technology, applied in heating and ventilation control systems, heating and ventilation safety systems, applications, etc., can solve problems such as compressor burnout and affect the service life of air conditioners, so as to prevent burnout, avoid oil plugging, and speed up The effect of defrosting speed
Active Publication Date: 2015-08-26
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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Problems solved by technology
[0006] In view of the above problems, the purpose of the present invention is to provide a control method and device for an air-conditioning system using R290 refrigerant, aiming at solving the problem of not judging whether the compressor oil blocks the capillary and adopting related control schemes in the existing R290 refrigerant air-conditioning system , may cause the compressor to burn out and affect the technical problems of the service life of the air conditioner
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Embodiment 1
[0059] figure 1 The flowchart of the control method for the air conditioning system using R290 refrigerant provided by the first embodiment of the present invention is shown, and for the convenience of description, only the parts related to this embodiment are shown.
[0060] Such as figure 1 As shown, the control method of the air-conditioning system using R290 refrigerant includes:
[0061] Step S101. Obtain the current working state of the air conditioning system.
[0062] In the air conditioning system using R290 as the refrigerant, when the temperature is low, the viscosity of the compressor oil is relatively high, and the charge of R290 refrigerant is small due to safety considerations, so the pressure of the air conditioning system is also small, which will make the oil with relatively high viscosity The capillary tube with small diameter is blocked by oil, which makes the R290 refrigerant unable to participate in the circulation, the compressor runs idly, the capacit...
Embodiment 2
[0105] Figure 5 The structure of the control device for the air-conditioning system using R290 refrigerant provided by the second embodiment of the present invention is shown, and for the convenience of description, only the parts related to this embodiment are shown.
[0106] The control device of the air-conditioning system using R290 refrigerant provided in this embodiment includes:
[0107] A status acquisition module 51, configured to acquire the current working status of the air conditioning system;
[0108] The start control module 52 is used to detect whether the air conditioner is faulty during the heating start-up process according to the outdoor ambient temperature, the operating frequency of the compressor, the current magnitude of the outdoor unit and the state of the air conditioner windshield when the air-conditioning system is started by heating. , display the fault code in the indoor unit and shut down;
[0109] The defrosting control module 53 is used to j...
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Abstract
The invention provides a control method and a device of an air conditioner system with an R290 refrigerant. The method comprises that a current working state of the air conditioner system is acquired; when the air conditioner system starts a heating function, whether an air conditioner fails during heating starting is detected according to an outdoor environmental temperature, operational frequency of a compressor, current of an outdoor unit and a wind shift state of the air conditioner, and when a failure appears, a failure code is displayed in an indoor unit and the air conditioner is shut down; when the air conditioner system starts a defrosting mode, whether defrosting is completed is judged according to the compressor frequency, the current of the outdoor unit and defrosting time during the defrosting; and when the defrosting is uncompleted, temperature of a condenser coil is detected, and the air conditioner is controlled to start a compulsory heating mode when the temperature of the condenser coil exceeds a preset temperature. Through control realized by the control method and the device of the air conditioner system with the R290 refrigerant provided by the invention, oil blocking can be effectively avoided, and the problem that a motor is burnt due to excessive heating caused by the oil blocking in the compressor can be prevented.
Description
technical field [0001] The invention belongs to the technical field of air-conditioning control, and in particular relates to a control method and device for an air-conditioning system using R290 refrigerant. Background technique [0002] At present, in the field of air-conditioning and refrigeration technology, most of the R410a refrigerants are used to replace R22, and its advantages are obviously reflected in inverter air conditioners. The greenhouse effect is becoming more and more serious, and under the background that countries around the world pay more and more attention to addressing global climate change, it will be gradually eliminated. Therefore, at present, it is more focused on the research of low-GWP refrigerants represented by R32 and R290. At the same time, the corresponding compressor research and development is also in progress. Among them, the compressor oil, as an indispensable part of the air conditioning system, is getting more and more attention, espe...
Claims
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Application Information
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