CN110578982A - control method for preventing snow deposition of outdoor unit of air conditioner with double wind directions - Google Patents
control method for preventing snow deposition of outdoor unit of air conditioner with double wind directions Download PDFInfo
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- CN110578982A CN110578982A CN201910703087.1A CN201910703087A CN110578982A CN 110578982 A CN110578982 A CN 110578982A CN 201910703087 A CN201910703087 A CN 201910703087A CN 110578982 A CN110578982 A CN 110578982A
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- Prior art keywords
- snow
- outdoor unit
- deposition
- air conditioner
- temperature value
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Classifications
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/52—Weather protecting means, e.g. against wind, rain or snow
Abstract
the invention provides a control method for preventing snow deposition of an outdoor unit of a double-wind-direction air conditioner, which comprises a temperature detection unit for monitoring the ambient temperature of the outdoor unit, wherein the temperature detection unit is started to monitor the ambient temperature T0 of the outdoor unit in real time after a compressor of the air conditioner system enters a shutdown state, the snow deposition prevention treatment is dynamically started or closed based on the ambient temperature T0 monitored by the temperature detection unit in real time, and the snow deposition prevention treatment is dynamically started or closed based on the ambient temperature T0 monitored by the temperature detection unit in real time, so that snow deposited on an outdoor heat exchanger can be effectively eliminated when the compressor is in the shutdown state, the influence of accumulated snow on the next startup operation of the air conditioner system is effectively reduced, the heat exchange efficiency of the outdoor heat exchanger at the next time is ensured, and the risk of liquid return of the compressor of the outdoor unit is reduced.
Description
Technical Field
the invention relates to the technical field of air conditioning systems, in particular to a first-stage snow deposition prevention treatment or a second-stage snow deposition prevention treatment.
Background
The existing outdoor unit of the air conditioner is installed outdoors, and when the outdoor unit is in snow in winter, if the outdoor unit does not work after the indoor unit is shut down, snow can fall on a heat exchanger of the outdoor unit, and when the outdoor unit is started next time, because a large amount of snow is deposited on the heat exchanger of the outdoor unit, the heating effect is poor generally, and the compressor can be started or burnt down by returning liquid refrigerant in the operation process when the outdoor unit is serious.
In general, some outdoor unit heat exchangers are externally provided with a snow-proof cover to prevent snow from depositing on the heat exchangers of the outdoor unit, but the installation cost needs to be increased due to the installation of the snow-proof cover, and the wind resistance of the outdoor unit is increased to reduce the heat exchange effect of the outdoor unit.
Disclosure of Invention
the invention aims to overcome the defects of the prior art and provides a control method for preventing snow deposition of an outdoor unit of a double-wind-direction air conditioner.
In order to achieve the above object, the method for controlling snow deposition prevention for an outdoor unit of a dual-air-direction air conditioner provided by the present invention includes a temperature detection unit for monitoring an ambient temperature of the outdoor unit, and after a compressor of the air conditioning system enters a shutdown state, the temperature detection unit is started to monitor an ambient temperature T0 of the outdoor unit in real time, wherein the snow deposition prevention process is dynamically started or stopped based on the ambient temperature T0 monitored by the temperature detection unit in real time, which includes the following specific cases:
Q1., when the environmental temperature T0 is higher than the preset first rated temperature value, the snow deposition prevention treatment is closed;
When the environmental temperature T0 is between a preset first rated temperature value and a second rated temperature value, starting a primary snow prevention deposition treatment, wherein the primary snow prevention deposition treatment is to start a fan of an outdoor unit at preset first interval time intervals so as to alternately switch forward and reverse rotation for each preset first operation time interval;
Q3. when the environmental temperature T0 is between the preset second rated temperature value, starting the second stage snow-proof deposition process, wherein the second stage snow-proof deposition process is that the fan of the outdoor unit is started at predetermined second interval time to alternately switch the forward and reverse rotation for the predetermined second operation time;
The first rated temperature value is higher than the second rated temperature value; the first interval period is longer than the second interval period.
Further, in the process of the first-stage snow prevention deposition treatment or the second-stage snow prevention deposition treatment, once the compressor of the air conditioning system is started, the first-stage snow prevention deposition treatment or the second-stage snow prevention deposition treatment is immediately closed, and the normal operation state is entered.
Further, the first rated temperature value is any one temperature value of 2 ~ 4 ℃.
Further, the first rated temperature value is 4 ℃.
Further, the second rated temperature value is any one temperature value of-1 ~ -2 ℃.
Further, the first rated temperature value is-1 ℃.
Further, the first interval period is 30 min.
Further, the second interval period is 15 min.
Further, the first operation time period is 1 min.
Further, the second operation time period is 1 min.
The invention adopts the scheme, and has the beneficial effects that: the snow-proof deposition treatment is dynamically started or closed through the environmental temperature T0 monitored in real time based on the temperature detection unit, so that snow deposited on the outdoor heat exchanger can be effectively eliminated when the compressor is in a shutdown state, the influence of the accumulated snow on the next startup operation of the air conditioning system is effectively reduced, the heat exchange efficiency of the next outdoor heat exchanger is ensured, and the risk of liquid return of the outdoor unit compressor is reduced.
Drawings
Fig. 1 is a schematic diagram of a control method of the embodiment.
Detailed Description
The present invention will be further described with reference to the following examples.
Referring to fig. 1, in the present embodiment, a method for controlling snow deposition prevention of an outdoor unit of a dual-wind-direction air conditioner includes a compressor, an outdoor unit and a temperature detection unit, wherein the outdoor unit includes a fan and an outdoor heat exchanger. The temperature detection unit of the embodiment is installed at the periphery of the outdoor heat exchanger and is used for monitoring the ambient temperature of the outdoor unit, after a compressor of the air conditioning system enters a shutdown state, the temperature detection unit is started to monitor the ambient temperature T0 of the outdoor unit in real time, so that the ambient temperature T0 is obtained through real-time monitoring, wherein the snow deposition prevention treatment is dynamically started or closed based on the ambient temperature T0, so that snow falling on the outdoor unit of the air conditioner when the outdoor unit of the air conditioner is shut down can be eliminated.
in the present embodiment, the air conditioning system performs processing based on the ambient temperature T0, which includes the following specific cases.
in case one Q1., when the ambient temperature T0 is higher than the preset first rated temperature value, it indicates that the outdoor ambient temperature of the outdoor unit is high at this time, and snow will not be generated, so that the snow deposition prevention process does not need to be performed at this time, and the snow deposition prevention process is turned off.
And secondly, when the environment temperature T0 is between the preset first rated temperature value and the second rated temperature value, it indicates that the outdoor environment temperature of the outdoor unit at this time is close to the freezing temperature of water, and a small amount of snow may fall on the outdoor heat exchanger, so that at this time, the first-stage snow deposition prevention treatment needs to be started, so as to remove the snow in time.
in case iii Q3., when the ambient temperature T0 is lower than the preset second rated temperature value, it indicates that the outdoor ambient temperature of the outdoor unit is lower than the freezing temperature of water, and there is a possibility that a large amount of snow falls on the outdoor heat exchanger, so that the secondary snow deposition prevention process needs to be started at this time to remove the snow in time.
The first rated temperature value is any one of temperature values of 2 ~ 4 ℃, namely, the first rated temperature value is 4 ℃ and the second rated temperature value is any one of temperature values of-1 ~ -2 ℃, namely, the second rated temperature value is-1 ℃, and the temperature value can be adaptively adjusted according to the actual environment and the type of the air conditioner.
In the present embodiment, the first-stage snow deposition prevention treatment: the fan of the outdoor unit is started at intervals of preset first interval time periods to alternately switch forward and reverse rotation to respectively operate the preset first operation time periods, namely, the first interval time period of the implementation is 30min, the first operation time period is 1min, the fan is started and closed at intervals to perform forward rotation operation for 1min and then reversely rotate for 1min, the double-wind-direction wind action is realized, so that a small part of accumulated snow deposited on the outdoor heat exchanger is removed by utilizing the wind action of the fan, and the removing effect is better.
In the present embodiment, the secondary snow deposition prevention treatment: the fan of the outdoor unit is started every preset second interval time period to alternately switch forward and reverse rotation to respectively operate the preset second operation time periods, namely, the second interval time period of the embodiment is 15min, the second operation time period is 1min, the fan is turned off at intervals, the fan is rotated forward for 1min and then rotated reversely for 1min, the wind force action of the double wind directions is realized, the accumulated snow deposited on the outdoor heat exchanger is removed by utilizing the wind force action of the fan, and the removing effect is better.
For the sake of easy understanding, the control method for preventing snow deposition is further explained below with reference to specific embodiments.
When the real-time monitored environmental temperature T0 is 3 ℃ and is between-1 ~ 4 ℃, the condition that the environmental temperature T0 is between a preset first rated temperature value and a preset second rated temperature value is met, therefore, the air conditioning system correspondingly starts primary snow-proof deposition treatment, namely, the air conditioning system controls the fan to rotate forwards for 1min at intervals of 30min and then rotate reversely for 1min, the cycle is repeated until the compressor is started or the real-time monitored environmental temperature T0 is higher than 4 ℃, the snow-proof deposition treatment is closed, and in addition, when the real-time monitored environmental temperature T0 is lower than-1 ℃, the primary snow-proof deposition treatment is switched to the secondary snow-proof deposition treatment.
When the real-time monitored environmental temperature T0 is-2 ℃ and is lower than-1 ℃, the condition that the environmental temperature T0 is lower than a preset second rated temperature value is met, and therefore, the air conditioning system correspondingly starts secondary snow deposition prevention treatment, namely, the air conditioning system controls the fan to rotate forward for 1min at intervals of 15min and then rotate reversely for 1min, the cycle is repeated until the compressor is detected to be started, the snow deposition prevention treatment is stopped, or the secondary snow deposition prevention treatment is switched to the primary snow deposition prevention treatment after the real-time monitored environmental temperature T0 is higher than-1 ℃.
Compared with the first-stage snow-proof deposition treatment, the second-stage snow-proof deposition treatment of the embodiment has shorter interval time and can remove snow more quickly.
In the present embodiment, during the state of the primary snow deposition prevention process or the secondary snow deposition prevention process, once the compressor of the air conditioning system is started, the primary snow deposition prevention process or the secondary snow deposition prevention process is immediately turned off, and the normal operation state is entered.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the invention without departing from the scope of the invention as set forth in the claims below. Therefore, equivalent changes made according to the spirit of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical scheme of the present invention.
Claims (10)
1. A control method for preventing snow deposition of an outdoor unit of a double-wind-direction air conditioner comprises a temperature detection unit for monitoring the ambient temperature of the outdoor unit, and is characterized in that: after a compressor of the air conditioning system enters a shutdown state, a temperature detection unit is started to monitor the ambient temperature T0 of an outdoor unit in real time, wherein the snow deposition prevention treatment is dynamically started or closed based on the ambient temperature T0 monitored by the temperature detection unit in real time, and the method specifically comprises the following conditions:
Q1., when the environmental temperature T0 is higher than the preset first rated temperature value, the snow deposition prevention treatment is closed;
When the environmental temperature T0 is between a preset first rated temperature value and a second rated temperature value, starting a primary snow prevention deposition treatment, wherein the primary snow prevention deposition treatment is to start a fan of an outdoor unit at preset first interval time intervals so as to alternately switch forward and reverse rotation for each preset first operation time interval;
Q3. when the environmental temperature T0 is between the preset second rated temperature value, starting the second stage snow-proof deposition process, wherein the second stage snow-proof deposition process is that the fan of the outdoor unit is started at predetermined second interval time to alternately switch the forward and reverse rotation for the predetermined second operation time;
The first rated temperature value is higher than the second rated temperature value; the first interval period is longer than the second interval period.
2. The outdoor unit of a dual wind direction air conditioner of claim 1, wherein the control method for preventing snow deposition comprises: in the process of the first-stage snow-proof deposition treatment or the second-stage snow-proof deposition treatment, once a compressor of the air conditioning system is started, the first-stage snow-proof deposition treatment or the second-stage snow-proof deposition treatment is immediately closed, and the air conditioning system enters a normal running state.
3. The outdoor unit of an air conditioner with a single wind direction as claimed in claim 1, wherein the first rated temperature value is any one of 2 ~ 4 ℃ and 4 ℃.
4. The outdoor unit of an air conditioner with a single wind direction as claimed in claim 3, wherein the control method comprises: the first nominal temperature value is 4 ℃.
5. The method as claimed in claim 1, wherein the second rated temperature value is any one temperature value of-1 ~ -2 ℃.
6. The outdoor unit of an air conditioner with a single wind direction as claimed in claim 5, wherein the control method comprises: the first rated temperature value is-1 ℃.
7. The outdoor unit of a dual wind direction air conditioner of claim 1, wherein the control method for preventing snow deposition comprises: the first interval period is 30 min.
8. The outdoor unit of a dual wind direction air conditioner of claim 1, wherein the control method for preventing snow deposition comprises: the second interval period is 15 min.
9. The outdoor unit of a dual wind direction air conditioner of claim 1, wherein the control method for preventing snow deposition comprises: the first operating period is 1 min.
10. The outdoor unit of a dual wind direction air conditioner of claim 1, wherein the control method for preventing snow deposition comprises: the second operation time period is 1 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910703087.1A CN110578982A (en) | 2019-07-31 | 2019-07-31 | control method for preventing snow deposition of outdoor unit of air conditioner with double wind directions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910703087.1A CN110578982A (en) | 2019-07-31 | 2019-07-31 | control method for preventing snow deposition of outdoor unit of air conditioner with double wind directions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110578982A true CN110578982A (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910703087.1A Pending CN110578982A (en) | 2019-07-31 | 2019-07-31 | control method for preventing snow deposition of outdoor unit of air conditioner with double wind directions |
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| CN (1) | CN110578982A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626697A (en) * | 1992-07-08 | 1994-02-04 | Toshiba Ave Corp | Air conditioner |
| JP2003232557A (en) * | 2002-02-08 | 2003-08-22 | Sanyo Electric Co Ltd | Drive controlling method for freezing device, air conditioner, and outside fan |
| CN101561167A (en) * | 2008-04-14 | 2009-10-21 | 乐金电子(天津)电器有限公司 | Snow cover prevention control method for fan of outdoor unit of air conditioner |
| US20120085113A1 (en) * | 2010-10-11 | 2012-04-12 | Lennox Industries Inc. | Fan motor controller for use in an air conditioning system |
| CN105276750A (en) * | 2014-06-25 | 2016-01-27 | 广东美的暖通设备有限公司 | Air conditioning outdoor unit and control method thereof, and air conditioner |
| CN106871368A (en) * | 2017-03-13 | 2017-06-20 | 珠海格力电器股份有限公司 | The control method of air-conditioner set, device and air-conditioner set |
| CN107143971A (en) * | 2017-04-18 | 2017-09-08 | 珠海格力电器股份有限公司 | A kind of snow defence control method, device, system and air-conditioning |
| CN107773152A (en) * | 2017-10-27 | 2018-03-09 | 无锡凹凸自动化科技有限公司 | A kind of vehicle-mounted telescopic formula dust catcher |
-
2019
- 2019-07-31 CN CN201910703087.1A patent/CN110578982A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626697A (en) * | 1992-07-08 | 1994-02-04 | Toshiba Ave Corp | Air conditioner |
| JP2003232557A (en) * | 2002-02-08 | 2003-08-22 | Sanyo Electric Co Ltd | Drive controlling method for freezing device, air conditioner, and outside fan |
| CN101561167A (en) * | 2008-04-14 | 2009-10-21 | 乐金电子(天津)电器有限公司 | Snow cover prevention control method for fan of outdoor unit of air conditioner |
| US20120085113A1 (en) * | 2010-10-11 | 2012-04-12 | Lennox Industries Inc. | Fan motor controller for use in an air conditioning system |
| CN105276750A (en) * | 2014-06-25 | 2016-01-27 | 广东美的暖通设备有限公司 | Air conditioning outdoor unit and control method thereof, and air conditioner |
| CN106871368A (en) * | 2017-03-13 | 2017-06-20 | 珠海格力电器股份有限公司 | The control method of air-conditioner set, device and air-conditioner set |
| CN107143971A (en) * | 2017-04-18 | 2017-09-08 | 珠海格力电器股份有限公司 | A kind of snow defence control method, device, system and air-conditioning |
| CN107773152A (en) * | 2017-10-27 | 2018-03-09 | 无锡凹凸自动化科技有限公司 | A kind of vehicle-mounted telescopic formula dust catcher |
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Application publication date: 20191217 |