Control method, control device and constant-speed air-cooled heat pump unit of outdoor unit fan
A control method, air-cooled heat pump technology, applied in the field of heat exchange, can solve problems such as large fluctuations in water supply temperature, frequent start and stop of fixed-speed air-cooled heat pump units, etc.
Active Publication Date: 2019-08-16
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a control method for the fan of the external unit, aiming at solving the problem of frequent start-up and stop of the fixed-speed air-cooled heat pump unit under the condition of small load without increasing the cost and construction area, which leads to fluctuations in the water supply temperature larger technical issues
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[0051] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0052]The invention proposes a control method applied to an external fan of a constant-speed air-cooled heat pump unit.
[0053] refer to figure 1 , figure 1 It is a flow chart of an embodiment of the control method of the fan of the external unit of the present invention.
[0054] In this example, further reference image 3 , the external machine includes at least two fans, each fan is provided with at least two stalls, the control method includes the following steps:
[0055] S10: It is detected that the outdoor machine has been running for at least two consecutive times and the running time is less than the preset value, so that the water supply temperature T reaches the highest set value T S While shutting down, run the following control logic:
[0056] S11: When the water supply temperature T reaches the fir...
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The invention provides a control method and a control device of an outdoor unit blower and a fixed-speed air cold hot pump unit; the outdoor unit comprises at least two blowers, wherein every blower is provided with at least two gears; when the running time of the outdoor unit for at least two times continuously is less than the preset value and the water supply temperature reaches the highest setting value, the blower is shut down, running the following control logic; before the water supply temperature reaches the first preset temperature, controlling all blowers at the highest wind speed gear so that the water supply temperature can reach the first preset temperature rapidly; when the water supply temperature reaches the first preset temperature, lowering the control blower by at least one gear; when the water supply temperature reaches the second preset temperature, adjusting the control blower to the lowest wind speed gear; when the water supply temperature reaches the third preset temperature, closing at least one blower; until the water supply temperature reaches the fourth preset temperature, completely closing all control blowers. The control method and the control device, and the fixed-speed air cold hot pump unit prolong the highest temperature setting time, thereby reducing the start and stop frequency of the outdoor unit, and guaranteeing the stable water supply temperature.
Description
technical field [0001] The invention relates to the technical field of heat exchange, in particular to a control method, a control device, and a constant-speed air-cooled heat pump unit for an external fan. Background technique [0002] As people's awareness of quality of life continues to improve, more and more people will choose to use floor heating for heating in winter. For a fixed-speed air-cooled hot and cold water heat pump unit, when working under a small load (such as an outdoor ambient temperature of about 10°C), the outlet water temperature will soon reach the preset value, and the compressor will continue to start and stop, resulting in a decrease in the supply water temperature. The fluctuation is large, and the indoor temperature cannot reach a more comfortable temperature for a long time. [0003] In response to the above situation, there are currently two solutions: (1) use frequency conversion products instead of fixed speed products, and use frequency conv...
Claims
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IPC IPC(8): F24F11/64F24F11/89F24F11/77F25B30/06
CPCF24F11/30F24F11/89F24F2110/00F25B30/06Y02B30/70
Inventor 马剑张光鹏
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD