CN113465153A - Control method of direct current fan - Google Patents
Control method of direct current fan Download PDFInfo
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- CN113465153A CN113465153A CN202110760488.8A CN202110760488A CN113465153A CN 113465153 A CN113465153 A CN 113465153A CN 202110760488 A CN202110760488 A CN 202110760488A CN 113465153 A CN113465153 A CN 113465153A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 13
- 238000001704 evaporation Methods 0.000 abstract description 12
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention relates to the technical field of heat pumps, in particular to a control method of a direct current fan, which comprises the following steps: in the operation stage of direct current fan, measure coil pipe temperature Te, decide the fan rotational speed according to the coil pipe temperature, the control rule includes: if Te is more than or equal to T1 and less than T2, the rotating speed of the fan is kept unchanged, wherein T1 is a first set temperature value, and T2 is a second set temperature value; if Te is less than T1, increasing the rotating speed of the fan to increase the temperature of the coil pipe until the temperature of the coil pipe meets the condition that Te is more than or equal to T1 and less than T2; if Te is more than or equal to T2, the rotating speed of the fan is reduced, so that the temperature of the coil is reduced along with the rotating speed until the temperature of the coil meets the condition that T1 is more than or equal to Te and is less than T2. The control method of the direct current fan controls the rotating speed of the fan through the temperature of the coil, namely when the load of the unit changes, the temperature of the coil changes along with the change of the load of the unit, the rotating speed of the fan can also change along with the change of the temperature of the coil, the performance of a system can be improved, the temperature of the coil can also be adjusted through the control method, and the purpose of accurately regulating and controlling the evaporating temperature of the fin heat exchanger on the air side is achieved.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to a control method of a direct current fan.
Background
The existing direct current fan can set the air quantity through a remote controller or set the direct current fan to be in an automatic mode. In the automatic mode, the fan rotation speed, i.e. the air supply volume, is related to the ambient temperature only, or to the difference between the ambient temperature and the set temperature. However, the ambient temperature cannot truly reflect the evaporation temperature of the system, and is influenced by the manufacturing process and the field installation condition, and the ambient temperature and the evaporation temperature are not a fixed difference. The existing control method cannot accurately control the evaporation temperature of the wind side fin heat exchanger, so that the overall performance of the system is low.
Therefore, a control method of the dc fan is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a control method of a direct current fan, which can accurately control the evaporation temperature of a fin heat exchanger on the air side and improve the system performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method of a direct current fan, the direct current fan using the method comprises an evaporator, a coil is arranged on the evaporator, and the method comprises the following steps:
in the operation stage of the evaporator, measuring the temperature Te of the coil in real time, and determining the rotating speed of the fan according to the temperature Te of the coil:
if Te is more than or equal to T1 and less than T2, the rotating speed of the fan is kept unchanged, wherein T1 is a first set temperature value, and T2 is a second set temperature value;
if Te is less than T1, increasing the rotating speed of the fan to increase the temperature of the coil pipe until the temperature of the coil pipe meets the condition that Te is more than or equal to T1 and less than T2;
if Te is more than or equal to T2, the rotating speed of the fan is reduced to reduce the temperature of the coil pipe until the temperature of the coil pipe meets the condition that T1 is more than or equal to Te and is less than T2.
Optionally, the fan speed is provided with a plurality of gears with fixed values, and the higher the gear is, the larger the fan speed is, the control method further includes:
when Tmin is not more than Te and is less than T1, the rotating speed of the fan is increased by one gear, and Tmin is the minimum set temperature value;
when T2 is more than or equal to Te and less than Tmax, the rotating speed of the fan is reduced by one gear, and Tmax is the maximum set temperature value.
Optionally, the control method further includes:
when Te is less than Tmin, the rotating speed of the fan is adjusted to the highest gear;
and when Te is more than or equal to Tmax, the rotating speed of the fan is adjusted to the lowest gear.
Optionally, the real-time coil temperature is measured for multiple times within the time period t1, an average value Ta is calculated, the average value Ta is used as the coil temperature Te within the time period t1, and the fan rotation speed within the next time period t1 is controlled according to the average value Ta control rule.
Optionally, t1 is divided into a plurality of time periods t2 with equal length, the real-time coil temperature is measured once in each time period t2, and the average value of all the real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te in the time period t 1.
Optionally, t1 is divided into t3 and t4, then t4 is divided into a plurality of time periods t5 with equal length, the real-time coil temperature is measured once in each time period t5, and the average value of all the real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te in the time period t 1.
Optionally, the real-time coil temperature measurement is at the evaporator inlet.
Optionally, in a starting stage before the operation stage, the ambient temperature is measured, and the rotation speed of the fan is controlled according to the ambient temperature.
Alternatively, the startup phase is maintained for a time period of t0, and the transition to the run phase is made after a time period of t 0.
Optionally, the real-time coil temperature is measured once every t6 time length in the starting phase, and when the difference value of the real-time coil temperatures measured in two adjacent times is smaller than or equal to the set difference value, the operation phase is switched to.
The invention has the beneficial effects that:
a control method of a direct current fan comprises the following steps: in the operation stage of direct current fan, measure coil pipe temperature Te, decide the fan rotational speed according to the coil pipe temperature, the control rule includes: if Te is more than or equal to T1 and less than T2, the rotating speed of the fan is kept unchanged, wherein T1 is a first set temperature value, and T2 is a second set temperature value; if Te is less than T1, increasing the rotating speed of the fan to increase the temperature of the coil pipe until the temperature of the coil pipe meets the condition that Te is more than or equal to T1 and less than T2; if Te is more than or equal to T2, the rotating speed of the fan is reduced, so that the temperature of the coil is reduced along with the rotating speed until the temperature of the coil meets the condition that T1 is more than or equal to Te and is less than T2. The control method of the direct current fan controls the rotating speed of the fan through the temperature of the coil, namely when the load of the unit changes, the temperature of the coil changes along with the change of the temperature of the coil, and the rotating speed of the fan can also change along with the change of the temperature of the coil, so that the system performance can be improved. When the coil pipe temperature is lower, the improvement of fan rotational speed can promote the evaporating pressure of evaporation side for evaporating temperature obtains improving, and the coil pipe temperature also improves thereupon, and on the same hand, when the coil pipe temperature is higher, the reduction of fan rotational speed can make the coil pipe temperature reduce thereupon, thereby reaches control regulation coil pipe temperature, accurate regulation and control wind side fin heat exchanger evaporating temperature's purpose.
Drawings
Fig. 1 is a schematic flow chart of a control method of a direct current fan according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the present embodiment provides a control method of a direct current blower that is used when a user selects an automatic mode when the direct current blower is provided in an air conditioner. The control method comprises a starting rule of a starting phase and a control rule of an operating phase.
In the starting stage of the direct current fan, the starting rule comprises controlling the rotating speed of the fan according to the environment temperature. Specifically, the ambient temperature is measured, and a corresponding fan gear is designated according to a temperature interval in which the ambient temperature is located, that is, the fan operates at a fixed fan rotation speed. As shown in the table below, for example, when the ambient temperature is 33 ℃, the fan is automatically set to 2 steps and the fan speed is set to 800 RPM.
| Ambient temperature (. degree. C.) | (-∞，-5) | [-5，10) | [10，20) | [20，30) | [30，40) | [40，+∞) |
| Fan gear | 6 | 5 | 4 | 3 | 2 | 1 |
| Fan speed (RPM) | 400 | 500 | 600 | 700 | 800 | 850 |
At direct current fan's start-up stage, the change of coil pipe temperature is big, if select the coil pipe temperature as the parameter of control fan rotational speed, then the fan rotational speed also can correspondingly take place great change, is unfavorable for system steady operation, and leads to system performance low easily. And the environmental temperature is very stable, and the change is very little in the start-up stage, so in the start-up stage of direct current fan, regard environmental temperature as the parameter of control fan rotational speed, be favorable to guaranteeing the steady operation of system.
Alternatively, the startup phase is maintained for a time period of t0, and the transition to the run phase is made after a time period of t 0. Optionally, t0 is 2min, that is, the fan operates for 2min according to the start rule of the start phase, and then switches to the operation phase to operate according to the control rule of the operation phase.
In addition to dividing the start-up phase and the run phase by time length, the magnitude of the change in coil temperature can also be used as an indicator to switch from the start-up phase to the run phase. Optionally, the real-time coil temperature is measured once every t6 time length in the starting stage, and when the difference between the real-time coil temperatures measured twice is smaller than or equal to the set difference, the operation stage can be switched to.
In the operation stage of direct current fan, measure coil pipe temperature Te, decide the fan rotational speed according to the coil pipe temperature, the control rule includes:
1. and if the T1 is more than or equal to Te and less than T2, keeping the rotating speed of the fan unchanged, wherein T1 is a first set temperature value, and T2 is a second set temperature value.
2. If Te is less than T1, increasing the rotating speed of the fan to increase the temperature of the coil pipe until the temperature of the coil pipe meets the condition that T1 is more than or equal to Te and less than T2. Optionally, the fan speed is provided with a plurality of gears with fixed values, as shown in the table above, the higher the gear is, the larger the fan speed is, that is, the fan speed of 1 gear is larger than that of 2 gears. Optionally, the detailed control rule after further dividing the temperature interval is as follows:
when Tmin is not more than Te and is less than T1, Tmin is the minimum set temperature value, the rotating speed of the fan is increased by one gear on the basis of the original fan gear, and if the original fan gear is 3 gears, the speed is adjusted to 2 gears.
And when Te is less than Tmin, the rotating speed of the fan is adjusted to the highest gear, namely 1 gear.
3. If Te is more than or equal to T2, the rotating speed of the fan is reduced, so that the temperature of the coil is reduced along with the rotating speed until the temperature of the coil meets the condition that T1 is more than or equal to Te and is less than T2. Optionally, the detailed control rule after further dividing the temperature interval is as follows:
when T2 is not less than Te and less than Tmax, Tmax is the maximum set temperature value, and the rotating speed of the fan is reduced by one gear on the basis of the original fan gear. And if the original fan gear is 4 gears, the gear is adjusted to 5 gears.
When Te is larger than or equal to Tmax, the rotating speed of the fan is adjusted to the lowest gear, namely 6 gears.
Alternatively, in the present embodiment, the first set temperature value T1 is set to 10 ℃, the second set temperature value T2 is set to 20 ℃, the minimum set temperature value Tmin is set to 5 ℃, and the maximum set temperature value Tmax is set to 24 ℃. Of course, other values may be set in other embodiments. The control rules are shown in the following table.
| Temperature of coil | (-∞，5) | [5，10) | [10，20) | [20，24) | [24，+∞) |
| Control rules | A | B | C | D | E |
A. The gear of the fan directly rises to the highest gear, namely 1 gear, no matter which gear is in the previous step;
B. increasing a gear on the basis of the current fan gear, and if the original gear is 1 gear, keeping the 1 gear;
C. the gear of the fan is kept unchanged;
D. descending a first gear on the basis of the current fan gear, and if the original gear is 6 gears, keeping 6 gears;
E. no matter which gear was in before, the fan gear directly drops to the lowest gear, i.e. 6.
Optionally, the real-time coil temperature is measured for multiple times within the time period t1 and an average value Ta is calculated, the average value Ta is used as the coil temperature Te, the fan rotation speed within the next time period t1 is controlled according to the control rule, the average value Ta ' is measured and calculated within the next time period t1 to obtain an average value Ta ', the average value Ta ' is used as the coil temperature Te, the fan rotation speed within the next time period t1 is controlled according to the control rule, and the fan rotation speed is controlled by analogy in sequence.
Optionally, t1 is divided into a plurality of time periods t2 with equal length, the real-time coil temperature is measured once in each time period t2, and the average value of all the real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te. Alternatively, t1 is 60s and t2 is 10 s. That is, the real-time coil temperature was measured once in 10 seconds, and the average value was calculated using 6 measurements within 60 seconds as a data source, and this average value was used as the coil temperature Te. And determining the fan gear within the next 60s according to the coil temperature Te and by combining the control rule.
In addition to the above method of averaging, subsequent measurements over time period t1 can be taken to average to allow the average to be closer to the coil temperature at time t1 to allow more precise control over the next time period t 1. Optionally, t1 is divided into t3 and t4, then t4 is divided into a plurality of time periods t5 with equal length, the real-time coil temperature is measured once in each time period t5, and the average value of all the real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te. Alternatively, t1 is 60s, t3 is 30s, t4 is 30s, and t5 is 10s, that is, the real-time coil temperature measurement is performed at the last 30s within 60s, and is uniformly measured 3 times within 30s, and the average of the 3 measurement results is calculated as the coil temperature Te. And determining the fan gear within the next 60s according to the coil temperature Te and by combining the control rule.
The existing coil temperature measurement position is at the evaporator elbow, and the design has two disadvantages. The first is that the evaporation temperature of the reaction system cannot be made more accurate, requiring more corrections to be added to the control. Secondly, when the ambient temperature is higher, the position point of the evaporator coil is easy to overheat, which causes the coil temperature to be very high, and at the moment, the expansion valve is closed all the time, which causes the compression ratio of the system to be increased, the exhaust temperature to be overhigh and the system pressure to be increased, thereby causing the unit failure. To address the above issues, optionally, in this embodiment, the real-time coil temperature measurement is located at the evaporator inlet, i.e., the split capillary transition. The refrigerant at the position is in a two-phase state, so that the evaporation temperature of the reaction system can be very accurate, and the problem of influence on control due to overheating can be avoided.
The control method of the direct current fan comprises a starting rule in a starting stage and a control rule in an operation stage. And in the starting stage, the ambient temperature is used as a control parameter to control the rotating speed of the fan, so that the stable operation of the system is ensured, and the service life is prolonged. The rotating speed of the fan is controlled by taking the temperature of the coil pipe as a control parameter in the operation stage, namely when the load of the unit changes, the temperature of the coil pipe changes along with the change of the temperature of the coil pipe, and the rotating speed of the fan can also change along with the change of the temperature of the coil pipe, so that the performance of the system can be improved. When the coil pipe temperature is lower, the improvement of fan rotational speed can make the coil pipe temperature improve thereupon, when the coil pipe temperature is higher, the reduction of fan rotational speed can make the coil pipe temperature reduce thereupon to reach the control and adjust the coil pipe temperature, accurate regulation and control wind side fin heat exchanger evaporating temperature's purpose.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A control method of a direct current fan, the direct current fan using the method comprises an evaporator, a coil is arranged on the evaporator, and the method is characterized by comprising the following steps:
in the operation stage of the evaporator, measuring the temperature Te of the coil in real time, and determining the rotating speed of the fan according to the temperature Te of the coil:
if Te is more than or equal to T1 and less than T2, the rotating speed of the fan is kept unchanged, wherein T1 is a first set temperature value, and T2 is a second set temperature value;
if Te is less than T1, increasing the rotating speed of the fan to increase the temperature of the coil pipe until the temperature of the coil pipe meets the condition that Te is more than or equal to T1 and less than T2;
if Te is more than or equal to T2, the rotating speed of the fan is reduced to reduce the temperature of the coil pipe until the temperature of the coil pipe meets the condition that T1 is more than or equal to Te and is less than T2.
2. The method for controlling the direct current fan according to claim 1, wherein the fan speed is provided with a plurality of gears with fixed values, and the higher the gear is, the larger the fan speed is, and the method further comprises the following steps:
when Tmin is not more than Te and is less than T1, the rotating speed of the fan is increased by one gear, and Tmin is the minimum set temperature value;
when T2 is more than or equal to Te and less than Tmax, the rotating speed of the fan is reduced by one gear, and Tmax is the maximum set temperature value.
3. The method of claim 2, further comprising:
when Te is less than Tmin, the rotating speed of the fan is adjusted to the highest gear;
and when Te is more than or equal to Tmax, the rotating speed of the fan is adjusted to the lowest gear.
4. The method for controlling the direct current fan according to any one of claims 1 to 3, wherein the real-time coil temperature is measured for a plurality of times within a time period t1 and an average value Ta is calculated, the average value Ta is used as the coil temperature Te within the time period t1, and the fan speed within the next time period t1 is controlled according to the average value Ta.
5. The control method of the direct current fan as claimed in claim 4, wherein t1 is divided into a plurality of time periods t2 with equal length, the real-time coil temperature is measured once in each time period t2, and the average value of all the real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te in the time period t 1.
6. The method for controlling the direct current fan as claimed in claim 4, wherein t1 is divided into t3 and t4, t4 is divided into a plurality of time periods t5 with equal length, the real-time coil temperature is measured once in each time period t5, and the average value of all real-time coil temperatures measured in one time period t1 is taken as the coil temperature Te in the time period t 1.
7. The method of claim 4, wherein the real-time coil temperature measurement is at the evaporator inlet.
8. The method of claim 1, wherein the ambient temperature is measured and the rotational speed of the fan is controlled according to the ambient temperature during a start-up phase before the operational phase.
9. The method for controlling the direct current fan according to claim 8, wherein the starting stage is kept for a time period of t0, and the operation stage is switched to the operation stage after the time period of t 0.
10. The control method of the direct current fan according to claim 8, wherein the real-time coil temperature is measured once every t6 time length in the starting stage, and when the difference value of the real-time coil temperatures measured in two adjacent times is smaller than or equal to the set difference value, the operation stage is switched to.
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| CN202110760488.8A CN113465153A (en) | 2021-07-06 | 2021-07-06 | Control method of direct current fan |
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| CN202110760488.8A CN113465153A (en) | 2021-07-06 | 2021-07-06 | Control method of direct current fan |
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| CN102705985A (en) * | 2012-06-12 | 2012-10-03 | 广东美的暖通设备有限公司 | Heat pump water heater system and method for controlling wind speed thereof |
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| CN111550901A (en) * | 2020-04-10 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Control method and control device of air conditioner, storage medium and air conditioner |
| CN111594977A (en) * | 2020-04-08 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Heating control method and air conditioner |
| CN112611084A (en) * | 2020-11-23 | 2021-04-06 | 珠海格力电器股份有限公司 | Low-temperature refrigeration control method and system, air conditioner, medium and terminal |
-
2021
- 2021-07-06 CN CN202110760488.8A patent/CN113465153A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705985A (en) * | 2012-06-12 | 2012-10-03 | 广东美的暖通设备有限公司 | Heat pump water heater system and method for controlling wind speed thereof |
| CN108826599A (en) * | 2018-05-09 | 2018-11-16 | 青岛海尔空调电子有限公司 | Control method for air-conditioning system |
| CN111594977A (en) * | 2020-04-08 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Heating control method and air conditioner |
| CN111550901A (en) * | 2020-04-10 | 2020-08-18 | 宁波奥克斯电气股份有限公司 | Control method and control device of air conditioner, storage medium and air conditioner |
| CN112611084A (en) * | 2020-11-23 | 2021-04-06 | 珠海格力电器股份有限公司 | Low-temperature refrigeration control method and system, air conditioner, medium and terminal |
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