33 results about "Fluorine deficiency" patented technology

The invention provides an air conditioner refrigerant fluorine deficiency judgment method and device. The method comprises the following steps: acquiring the inner-ring temperature and inner-tube temperature of an air conditioner after the air conditioner is started up and operates for a first preset time; acquiring the evaporation pressure of the air conditioner; and when the evaporation pressure is less than or equal to a refrigerant fluorine deficiency pressure judgment critical value and the difference between the inner-ring temperature and the inner-tube temperature is less than or equal to a first preset difference, controlling the air conditioner to get into a fluorine deficiency judgment mode. The method and the device solve the technical problem that refrigerant deficiency cannot be detected effectively in the prior art, achieve the purpose of effectively finding whether the air conditioner lacks fluorine, and are simple to realize.

The application relates to a fluorine deficiency detection control method, device, system for temperature adjusting equipment and an air conditioner. The method includes the following steps: acquiringoutdoor ambient temperature, air outlet temperature of an inner machine and module high pressure of an outer machine; acquiring a detection result according to the outdoor ambient temperature and theair outlet temperature of the internal machine when the module high pressure of the outer machine is within the preset high pressure target range; and acquiring the detection result according to themodule high pressure of the outer machine and the preset high pressure target range when the module high pressure of the outer machine is not within the preset high pressure target range. The outdoorambient temperature, the air outlet temperature of the inner machine, the module high pressure of the outer machine and the preset high pressure target range are combined for judging, the temperatureadjusting equipment can be automatically judged whether the fluorine is short or not while the refrigeration experience of users is not affected, so that the fluorine deficiency detection efficiency is effectively improved.

The invention discloses a fluorine-deficient protection method for an air conditioner. The method comprises the following steps of obtaining an initial inner ring temperature and an initial inner tubetemperature and calculating an initial temperature difference, wherein the initial temperature difference is a difference value between the initial inner ring temperature and the initial inner tube temperature; judging whether the initial inner ring temperature is in a preset inner ring temperature range and the initial temperature difference is less than or equal to a first preset difference value; if so, detecting an inner ring temperature and an inner tube temperature in real time and calculating a real-time temperature difference, wherein the real-time temperature difference is a difference value between the inner ring temperature and the inner tube temperature both detected in real time; and controlling a compressor to stop when a difference value between the real-time temperature difference and the initial temperature difference is less than or equal to a second preset difference value, and when the duration generated when a difference value between the inner tube temperature detected in real time and the initial inner tube temperature is less than or equal to a third preset difference value reaches a first preset time length. The invention also discloses the air conditionerand a readable storage medium. The temperature difference parameters are judged for a plurality of times to ensure that false protection of the air conditioner under the condition of no fluorine deficiency or a little fluorine deficiency amount can not be caused, and the occurrence of false protection is reduced.

The invention provides an air conditioner fluorine deficiency protection control method, an air conditioner and a computer readable storage medium. The air conditioner fluorine deficiency protection control method comprises the steps that S1, the air conditioner is started to operate; S2, the air conditioner obtains the exhaust superheat degree SH and the suction superheat degree SSH in real time; S3, the air conditioner judges whether the conditions that the SH is larger than or equal to a value obtained by multiplying beta and a first preset value and the SSH is larger than or equal to a value obtained by multiplying beta and a second preset value are met at the same time or not, if yes, the step S4 is executed, and if not, the air conditioner continues to operate; and S4, the air conditioner detects the outer environment temperature Tw in real time, whether the high-pressure saturation temperature Tc meets the condition that the sum of Tc and K is smaller than or equal to Tw or not is judged, if yes, a compressor is subjected to shutdown protection, and a fluorine-lacking prompting lamp on an air conditioner display lamp panel is turned on for a long time. According to the air conditioner fluorine deficiency protection control method, on one hand, the judgment accuracy of the air conditioner on the fluorine deficiency condition is improved, and the misjudgment condition is avoided; and on the other hand, the effectiveness of the air conditioner fluorine deficiency protection control method is ensured. In addition, the compressor is subjected to shutdown protection after fluorine deficiency is judged, so that damage to parts due to running of the air conditioner in the fluorine deficiency state is avoided, and the running reliability of a unit is improved.

The invention discloses a fluorine deficiency control method for a reheating mode of a reheating and dehumidification multi-split air conditioner system. The system comprises an outdoor unit and a plurality of indoor units; each indoor unit comprises an indoor unit first heat exchanger, an indoor unit second heat exchanger, a first expansion valve and a second expansion valve, wherein the first expansion valve is connected onto a pipeline of the indoor unit first heat exchanger, and the second expansion valve is connected onto a pipeline of the indoor unit second heat exchanger; the control method comprises a fluorine deficiency judging step: detecting a first difference value between a superheat degree of a first heat exchanger of a started indoor unit and a target superheat degree, and a second difference value between temperature of an outlet pipe of a gas-liquid separator of the outdoor unit and a refrigerant saturation temperature value corresponding to a pressure value of a low-pressure side, and judging whether the system is deficient in fluorine or not according to a result of the first difference value and the second difference value. According to the fluorine deficiency control method for the reheating mode, disclosed by the invention, the reheating and dehumidification multi-split air conditioner system is enabled to judge whether the fluorine is deficient or not accurately, therefore a foundation is laid for timely quit of a fluorine-deficiency state.

The invention discloses a fault self-checking method of an air conditioner and the multi-split air conditioner. The method is applied to the multi-split air conditioner comprising at least one outdoorunit, multiple indoor units and a controller. The method includes the following steps that the air conditioner is controlled to enter a self-checking mode; when the self-checking mode refers to refrigeration self-checking, whether the air conditioner has a fluorine deficiency fault is judged on the basis of the temperature of a first indoor unit liquid pipe, the temperature of a second indoor unit liquid pipe and the temperature of an outdoor unit coil pipe of the air conditioner, and when the air conditioner does not have the fluorine deficiency fault, fault self-checking is conducted according to first operation parameters and first preset parameters; and when the self-checking mode refers to heating self-checking, fault self-checking is conducted according to second operation parameters and second preset parameters, so that fault self-checking of the air conditioner is achieved, and the self-checking accuracy and efficiency are improved.