Fresh air unit adopting internal circulation mode and having low air resistance as well as controlling method thereof
A new air unit and control method technology, applied in heating and ventilation control system, control input related to air characteristics, space heating and ventilation control input, etc., can solve the problems of increasing energy consumption, achieve simplified structure, overcome pressure drop and energy consumption increase, the effect of ensuring reliability
Active Publication Date: 2021-01-05
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0003] In order to solve the technical problem of increasing energy consumption caused by the return air fan always working during the internal circulation in the fresh air unit of the prior art, a return air inlet is provided on the fresh air fan to introduce the return air so as to reduce the pressure drop of the return air and Fresh air unit with low wind resistance in internal circulation mode of energy consumption and its control method
Method used
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0047] Such as Figure 1 to Figure 7The shown fresh air unit includes: a casing 1, a fresh air chamber and an exhaust chamber are formed inside the casing 1, the fresh air chamber and the exhaust chamber are stacked, and the casing 1 is provided with a return air port 11. Fresh air outlet 12 and exhaust outlet 13; the fresh air chamber is provided with a return air inlet 22 and a fresh air inlet 21, and the exhaust chamber is provided with a return air outlet 51; the fresh air chamber is provided with a fresh air Fan 2, an exhaust fan is arranged in the exhaust cavity, and the fresh air fan and th...
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The invention provides a fresh air unit adopting an internal circulation mode and having low air resistance as well as a controlling method thereof. The fresh air unit comprises a shell and a fresh air blower; when the fresh air unit is in a fresh air mode, a fresh air inlet communicates with a fresh air port through a heat exchange mechanism, and an air return inlet is located in a closing state;and when the fresh air unit is in the internal circulation mode, the air return inlet communicates with an air return port, and the fresh air inlet is located in a closing state. According to the fresh air unit adopting the internal circulation mode and having the low air resistance as well as the controlling method thereof disclosed by the invention, the air return inlet is additionally formed in the fresh air blower and is used for leading returned air into the air return inlet, so that the problem that pressure drop and energy consumption are increased because the indoor returned air needsto pass through a resistance part in the prior art are effectively overcome; and meanwhile, due to arrangement of a communication channel, the air return port can directly communicate with the air return inlet and the heat exchange mechanism in the communication channel based on needs, so that a structure of the fresh air unit is effectively simplified.
Description
technical field [0001] The invention relates to the technical field of fresh air devices, in particular to a fresh air unit with small wind resistance in an internal circulation mode and a control method thereof. Background technique [0002] Fresh air fans have gradually entered people's lives and become another important air-conditioning equipment. At present, fresh air fans on the market mainly use fans to drive outdoor fresh air and indoor exhaust air, recover the heat of exhaust air in the exchange core, and control the cleanliness of fresh air through filter components. However, when the existing full heat exchange fresh air fan operates at low temperature, high humidity or other severe weather conditions, the exchange membrane inside the total heat exchange core will collapse or even rupture due to exceeding the operating range. For this reason, many fresh air fans start to be equipped with internal circulation function, but the return air fan and the fresh air fan o...
Claims
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IPC IPC(8): F24F7/007F24F13/20F24F13/14F24F13/02F24F13/30F24F11/64F24F11/65F24F11/61F24F11/52F24F11/46F24F110/10F24F110/20
CPCF24F7/007F24F11/0001F24F13/02F24F13/14F24F13/20F24F13/30F24F2013/205F24F11/46F24F11/52F24F11/61F24F11/64F24F11/65F24F2110/10F24F2110/20
Inventor 张玉峰杨力古展彰
Owner GREE ELECTRIC APPLIANCES INC