Cooling-only air conditioner and its control method
An air conditioner and cooling-only technology, which is applied in the field of cooling-only air conditioners and their control, can solve the problems affecting the heat transfer performance of the evaporator, increasing the compression power consumption of the compressor, and affecting the energy efficiency level of the air conditioner, so as to achieve the highest energy efficiency Excellent, reduce compression power consumption, and prolong service life
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Embodiment 1
[0060] In this embodiment, the first detection object and the second detection object are both the outdoor ambient temperature T4 and the operating frequency F, and the first throttling element and the second throttling element are calculated according to the detected outdoor ambient temperature T4 and operating frequency F The set opening degree of the element, and then adjust the corresponding opening degrees of the first throttling element and the second throttling element according to the set opening degree.
[0061] It can be understood that the calculation formula is pre-set in the electronic control element of the cooling-only air conditioner, and the calculation formula can be specifically defined according to the actual situation.
[0062]Specifically, during cooling, the relationship between the opening degree LA_cool_1 of the first throttling element, the outdoor ambient temperature T4 and the operating frequency F is: LA_cool_1=a 1 ·F+b 1 T 4 +c 1 , when the cal...
Embodiment 2
[0067] In this embodiment, the first detection object is the outdoor ambient temperature T4 and the operating frequency F, first calculate the set opening degree of the first throttling element according to the outdoor ambient temperature T4 and operating frequency F, and then adjust according to the set opening degree the opening degree of the first throttling element;
[0068] The second detection object is outdoor ambient temperature T4, operating frequency F and exhaust pressure; Constant exhaust pressure or set exhaust temperature, and then adjust the opening degree of the second throttling element according to the actually detected exhaust pressure or exhaust temperature so that the detected exhaust pressure or exhaust temperature reaches the set exhaust gas temperature. pressure or set discharge temperature.
[0069] Specifically, during cooling, the relationship between the opening degree LA_cool_1 of the first throttling element, the outdoor ambient temperature T4 an...
Embodiment 3
[0074] In this embodiment, a plurality of outdoor temperature intervals are preset, and each outdoor temperature interval corresponds to a different opening degree of the throttling element. The first detection object is the outdoor ambient temperature T4. According to the location where the actually detected outdoor ambient temperature T4 is The opening value corresponding to the outdoor temperature range adjusts the opening of the first throttling element;
[0075] The second detection object is outdoor ambient temperature T4, operating frequency F and exhaust pressure; Determine the exhaust pressure or set the exhaust temperature, and then adjust the opening of the second throttling element according to the actual detected exhaust pressure or exhaust temperature so that the detected exhaust pressure or exhaust temperature reaches the set exhaust pressure or Set the discharge temperature.
[0076] Specifically, when cooling, the specific conditions of the opening of the fir...
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