US2020056798A1PendingUtilityA1
Control device and method for outdoor fan of air conditioner
Assignee: QINGDAO HAIER AIR CONDITIONING ELECTRONIC CO LTDPriority: May 5, 2017Filed: Apr 9, 2018Published: Feb 20, 2020
Est. expiryMay 5, 2037(~10.8 yrs left)· nominal 20-yr term from priority
F24F 11/77F24F 2110/12F24F 2140/20F24F 11/64F24F 11/30F24F 1/16Y02B30/70
38
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Claims
Abstract
The present disclosure discloses a control device for an outdoor fan of an air conditioner. The device includes: an outdoor environment temperature detection unit configured to detect an outdoor environment temperature; a first temperature detection unit and a second temperature detection unit configured to detect an outdoor condenser coil temperature; a calculation unit configured to calculate a target rotational speed of the outdoor fan according to the outdoor environment temperature and the outdoor condenser coil temperature; and a control unit configured to control the outdoor fan to operate at the target rotational speed. The present disclosure further discloses a control method for an outdoor fan of an air conditioner.
Claims
exact text as granted — not AI-modified1 . A control device for an outdoor fan of an air conditioner, comprising:
an outdoor environment temperature detection unit configured to detect an outdoor environment temperature; a first temperature detection unit and a second temperature detection unit configured to detect an outdoor condenser coil temperature; a calculation unit configured to calculate a target rotational speed of the outdoor fan according to the outdoor environment temperature and the outdoor condenser coil temperature; and a control unit configured to control the outdoor fan to operate at the target rotational speed.
2 . The device according to claim 1 , wherein the calculation unit calculates the target rotational speed of the outdoor fan according to the following formula:
n
=
N
*
(
Ta
0
+
273.15
)
*
(
Tp
0
-
Ta
0
)
*
(
273.15
+
Tp
0
)
(
Tp
-
Ta
)
*
(
273.15
+
Tp
)
*
(
273.15
+
Ta
)
wherein n is the target rotational speed of the outdoor fan, N is a rated maximum rotational speed when the outdoor fan operates at full speed, Tp 0 is an outdoor condenser coil temperature preset by the air conditioner, Ta 0 is an outdoor environment temperature preset by the air conditioner, Tp is the outdoor condenser coil temperature, and Ta is the outdoor environment temperature.
3 . The device according to claim 1 , wherein
the outdoor condenser coil temperature is a higher one of outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit.
4 . The device according to claim 1 , wherein the control unit is further configured to control the outdoor fan to operate at a first rotational speed within a first set time after startup.
5 . A control method for an outdoor fan of an air conditioner, comprising:
when it is detected that an outdoor environment temperature is less than a first set temperature, controlling the outdoor fan to operate at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature and an outdoor condenser coil temperature detected by a first temperature detection unit and a second temperature detection unit within a second set time; and when it is detected that an absolute value of a difference between the outdoor condenser coil temperature and a preset outdoor condenser coil temperature is greater than a second set temperature, controlling the outdoor fan to operate at a target rotational speed of the outdoor fan determined according to a latest read outdoor environment temperature and the outdoor condenser coil temperature detected by the first temperature detection unit and the second temperature detection unit within the second set time.
6 . The method according to claim 5 , wherein the controlling the outdoor fan to operate at a target rotational speed of the outdoor fan determined according to the outdoor environment temperature and an outdoor condenser coil temperature detected by a first temperature detection unit and a second temperature detection unit within a second set time comprises:
calculating the target rotational speed of the outdoor fan according to the following formula:
n
=
N
*
(
Ta
0
+
273.15
)
*
(
Tp
0
-
Ta
0
)
*
(
273.15
+
Tp
0
)
(
Tp
-
Ta
)
*
(
273.15
+
Tp
)
*
(
273.15
+
Ta
)
wherein n is the target rotational speed of the outdoor fan, N is a rated maximum rotational speed when the outdoor fan operates at full speed, Tp 0 is an outdoor condenser coil temperature preset by the air conditioner, Ta 0 is an outdoor environment temperature preset by the air conditioner, Tp is the outdoor condenser coil temperature, and Ta is the outdoor environment temperature; and
controlling the outdoor fan to operate at the target rotational speed within the second set time.
7 . The method according to claim 5 , wherein the outdoor condenser coil temperature is a higher one of outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit.
8 . The method according to claim 6 , further comprising:
reading the outdoor environment temperature and the outdoor condenser coil temperature once every second set time, and ending after reading six groups of data; and calculating an average value of the outdoor environment temperature and an average value of the outdoor condenser coil temperature.
9 . The method according to claim 5 , further comprising:
controlling the outdoor fan to operate at a first rotational speed within a first set time after startup.
10 . The device according to claim 2 , wherein the outdoor condenser coil temperature is a higher one of outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit.
11 . The method according to claim 6 , wherein the outdoor condenser coil temperature is a higher one of outdoor condenser coil temperatures detected by the first temperature detection unit and the second temperature detection unit.Join the waitlist — get patent alerts
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