Multi-connected external unit and fresh air blower mixed-connection system and control method thereof
A control method and new fan technology, applied in heating and ventilation control systems, heating and ventilation safety systems, air conditioning systems, etc., can solve the problems of ordinary indoor unit capacity attenuation, high temperature, and deterioration of indoor effects
Active Publication Date: 2020-05-08
NINGBO AUX ELECTRIC
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Problems solved by technology
According to the current general control method of fresh air fans, the fresh air fans continue to run after starting up, and there are comfort problems: even if the fresh air fans have cooling / heating capabilities, but because they are mixed with ordinary multi-connected indoor units in a system, that is, System capacity = common internal machine capacity + fresh air machine capacity, fresh air machine will occupy the system capacity
The failure of the outdoor unit or the attenuation of the capacity will reduce the system capacity. At this time, if the fresh air capacity or the fresh air volume is increased, the capacity of the ordinary indoor unit will be further attenuated, and the indoor effect will be doubled.
Therefore, when ordinary multi-connected outdoor units fail to operate, the outdoor fresh air will aggravate the indoor comfort problem, especially in high temperature or low temperature weather, ordinary indoor units cannot provide cooling / heating, but fresh air is still being supplied continuously. The indoor temperature is getting higher / lower, affecting the experience
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0028] According to one aspect of the embodiments of...
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The invention provides a control method of a multi-connected external unit and fresh air blower mixed connection system. When an external unit cannot run due to a fault or the high-temperature / low-temperature capability of the external unit weakens and the normal indoor effect cannot be ensured, a fresh air blower can automatically recognize the situation and regulate the fresh air volume and theoutlet air temperature, supply of fresh air can be ensured, and meanwhile it can be avoided that the indoor temperature is too high or too low. The cooling / heating capability weakening proportion of the system is automatically recognized, and the air level of the fresh air blower and the opening degree of an expansion valve are automatically adjusted or the fresh air blower is started or stopped according to the cooling / heating capability weakening proportion of the system so as to regulate the fresh air volume and the outlet air temperature to reduce the influence on the indoor temperature.
Description
technical field [0001] The invention relates to the field of air conditioning, in particular to a hybrid connection system of multi-connected external units and fresh air fans and a control method thereof. Background technique [0002] At present, in the fresh air market, frequency conversion multi-connected fresh air fans are more and more widely used. Mixed connection with ordinary multi-connected external units in the same system is a common application scenario for fresh air fans. According to the current general control method of fresh air fans, the fresh air fans continue to run after starting up, and there are comfort problems: even if the fresh air fans have cooling / heating capabilities, but because they are mixed with ordinary multi-connected indoor units in a system, that is, System capacity = ordinary internal machine capacity + fresh air machine capacity, the fresh air machine will occupy the system capacity. If the outdoor unit is faulty or the capacity is att...
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IPC IPC(8): F24F1/0003F24F1/0035F24F11/32F24F11/64F24F11/65F24F11/72F24F11/88F24F140/40
CPCF24F1/0003F24F11/32F24F11/64F24F11/65F24F11/72F24F11/88F24F2140/40F24F1/0035
Inventor 任小辉陈东张坤坤
Owner NINGBO AUX ELECTRIC