CN105509314B - Defrosting method and system of air energy water heater - Google Patents
Defrosting method and system of air energy water heater Download PDFInfo
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- CN105509314B CN105509314B CN201410485648.2A CN201410485648A CN105509314B CN 105509314 B CN105509314 B CN 105509314B CN 201410485648 A CN201410485648 A CN 201410485648A CN 105509314 B CN105509314 B CN 105509314B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000010257 thawing Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The application discloses a defrosting method and system for an air energy water heater. Compared with the prior art, the invention combines the local weather forecast information of the unit installation, so that the unit defrosting can be more accurately controlled, the false defrosting action is effectively reduced, the air energy water heater is more energy-saving and economical, and the operation effect of the air energy water heater is improved to a certain extent.
Description
Technical field
The present invention relates to air-source water heater technical field, more specifically, being related to a kind of defrost of air-source water heater
Method and system.
Background technology
Air-source water heater is also known as " air source hot pump water heater ", " cold air water heater " etc., and air-source water heater can be
Low-temperature heat quantity in air, which is absorbed into, to be come, and is converted into after compressor compresses high temperature heat and is heated water temperature with this.But when
When environment temperature is too low, the evaporator of air-source water heater can suction out the vapor in environment when absorbing the heat in air
Come, form frost, unit heat dissipation and unit performance are influenced, so defrost must be carried out.
Generally use what is be combined based on outdoor environment temperature, outdoor heat exchanger tube temperature and heat pump continuous operating time at present
Defrosting method.But judgement is carried out according to above-mentioned two temperature and is deposited at low temperature without frosting, and temperature has reached setting value and has led
" the false defrost action " caused, so that air-source water heater is not energy saving, uneconomical and operation is slow.
The content of the invention
In view of this, the present invention provides a kind of defrosting method and system of air-source water heater, to solve because " false defrost is moved
The problem of air-source water heater is not energy saving caused by work ", uneconomical and operation is slow.
A kind of defrosting method of air-source water heater, including：
Gather weather forecast information of the units' installation locality in the first preset time period；
When the local highest temperature of weather forecast information instruction is less than the first preset temperature, while meet following two
A condition, controls unit defrost；
Unit hot water model accumulated running time t >=t0+t1+t2, wherein, t0 is the first preset time, t1 first
Weather correction factor, t2 are wind scale correction factor；
Continuous second preset time period detects the temperature difference of outdoor heat exchanger tube temperature To and outdoor environment temperature Te less than pre-
If the temperature difference；
When the local lowest temperature of weather forecast information instruction is not less than first preset temperature, and the locality
When the highest temperature is no more than the second preset temperature, while meet following three condition, control unit defrost, wherein, described second
Preset temperature is higher than first preset temperature；
Unit hot water model accumulated running time t >=t00+t11+t2+t3, wherein, t00 is the second preset time, t11
For the second weather correction factor, t2 is wind scale correction factor, and t3 is humidity correction factor；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To is less than the 3rd preset temperature；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To and outdoor environment temperature Te meet relation
To ＜ 0.5 × (Te-20 DEG C).
Preferably, further include：
When the local lowest temperature exceedes second preset temperature, control unit is in first preset time period
Do not enter defrost inside.
Preferably, further include：
Meet following either condition, control unit exits defrost；
Continuous 3rd preset time period detects that outdoor heat exchanger tube temperature To is not less than the 4th preset temperature；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To is not less than second preset temperature；
Defrost accumulated running time reaches the 4th preset time period.
Preferably, the value range of first preset temperature is [- 7 DEG C, -3 DEG C].
Preferably, the value range of second preset temperature is [8 DEG C, 12 DEG C].
A kind of defrosting system of air-source water heater, including：
Collecting unit, for gathering weather forecast information of the units' installation locality in the first preset time period；
First control unit, the local highest temperature for being indicated when the weather forecast information are less than the first preset temperature
When, while meet following two conditions, control unit defrost；
Unit hot water model accumulated running time t >=t0+t1+t2, wherein, t0 is the first preset time, t1 first
Weather correction factor, t2 are wind scale correction factor；
Continuous second preset time period detects the temperature difference of outdoor heat exchanger tube temperature To and outdoor environment temperature Te less than pre-
If the temperature difference；
Second control unit, the local lowest temperature for being indicated when the weather forecast information are pre- not less than described first
If temperature, and when the local highest temperature is no more than the second preset temperature, while meet following three condition, control unit
Frost, wherein, second preset temperature is higher than first preset temperature；
Unit hot water model accumulated running time t >=t00+t11+t2+t3, wherein, t00 is the second preset time, t11
For the second weather correction factor, t2 is wind scale correction factor, and t3 is humidity correction factor；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To is less than the 3rd preset temperature；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To and outdoor environment temperature Te meet relation
To ＜ 0.5 × (Te-20 DEG C).
Preferably, further include：
3rd control unit, for gathering weather of the units' installation locality in the first preset time period in the collecting unit
After forecast information, when the local lowest temperature exceedes second preset temperature, control unit is default described first
Do not enter defrost in period.
Preferably, further include：
4th control unit, after controlling unit defrost in first control unit, or in the described second control
After unit control unit defrost processed, meet following either condition, control unit exits defrost；
Continuous 3rd preset time period detects that outdoor heat exchanger tube temperature To is not less than the 4th preset temperature；
Continuous second preset time period detects that outdoor heat exchanger tube temperature To is not less than second preset temperature；
Defrost accumulated running time reaches the 4th preset time period.
Preferably, the value range of first preset temperature is [- 7 DEG C, -3 DEG C].
Preferably, the value range of second preset temperature is [8 DEG C, 12 DEG C].
It can be seen from the above technical scheme that the present invention provides a kind of air-source water heater defrosting method and be
System, gathers the weather forecast information of units' installation locality, then in conjunction with weather forecast information and outdoor environment temperature, room first
The outer gentle unit hot water model accumulated running time selection defrost entry condition of heat exchanger tube.Compared to existing technologies, this hair
It is bright to combine units' installation Local Weather Report information, therefore unit defrost can be more accurately controlled, so as to effectively reduce
The generation of " false defrost action " so that air-source water heater is more energy saving, economic, and improves air to a certain extent
The operational effect of energy water heater.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of defrosting method flow chart of air-source water heater disclosed by the embodiments of the present invention；
Fig. 2 is the defrosting method flow chart of another air-source water heater disclosed by the embodiments of the present invention；
Fig. 3 is the defrosting method flow chart of another air-source water heater disclosed by the embodiments of the present invention；
Fig. 4 is a kind of structure diagram of the defrosting system of air-source water heater disclosed by the embodiments of the present invention；
Fig. 5 is the structure diagram of the defrosting system of another air-source water heater disclosed by the embodiments of the present invention；
Fig. 6 is the structure diagram of the defrosting system of another air-source water heater disclosed by the embodiments of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the invention discloses the defrosting method and system of a kind of air-source water heater, to solve because " false defrost is moved
The problem of air-source water heater is not energy saving caused by work ", uneconomical and operation is slow.
Referring to Fig. 1, a kind of defrosting method flow chart of air-source water heater disclosed by the embodiments of the present invention, including step：
Step S11, weather forecast information of the units' installation locality in the first preset time period is gathered；
Wherein, the first preset time period depend on the actual needs, can be the shortest time that can forecast of weather forecast or
It is a regular time section, such as future 3h.
Weather forecast information includes：Local weather conditions (the rain or shine sleet of unit collection in the first preset time period
Deng), wind-force, local highest temperature Ty-max, locality lowest temperature Ty-min and humidity Tw etc..
Step S12, it is full at the same time when the local highest temperature of weather forecast information instruction is less than the first preset temperature
Sufficient first condition and second condition, control unit defrost；
First condition is：Unit hot water model accumulated running time t >=t0+t1+t2；
Wherein, t0 is the first preset time, 100min~150min, preferably 120min；
T1 is the first weather correction factor, and rain or shine weather is 0, and rain, snowy day gas are -15min；
T2 is wind scale correction factor, is 5min when 0-3 grades of wind-force, and 4-5 grades of whens are -5min when being 0,6-7 grades, 8 grades with
It was -10min when upper；
Second condition is：Continuous second preset time period detects outdoor heat exchanger tube temperature To and outdoor environment temperature Te's
The temperature difference is less than fiducial temperature；
Wherein, the value range of the first preset temperature is [- 7 DEG C, -3 DEG C], preferably -5 DEG C.
The value range of fiducial temperature is [- 7 DEG C, -3 DEG C], preferably -5 DEG C.
Second preset time period is 1min.
Step S13, when the weather forecast information instruction the local lowest temperature be not less than first preset temperature, and
When the locality highest temperature is no more than the second preset temperature, while meet third condition, fourth condition and fifth condition, control
Unit defrost, wherein, second preset temperature is higher than first preset temperature；
Third condition is：Unit hot water model accumulated running time t >=t00+t11+t2+t3；
Wherein, t00 is the second preset time, 60min~100min, preferably 80min；
T11 is the second weather correction factor, and rain or shine weather is 0, and rain, snowy day gas are -10min；
T2 is wind scale correction factor, is 5min when 0-3 grades of wind-force, and 4-5 grades of whens are -5min when being 0,6-7 grades, 8 grades with
It was -10min when upper；
T3 is humidity correction factor, be 10min when maximal humidity is less than 40%, is 0 during maximal humidity 40%-60%,
It is -10min during maximal humidity 60%-80%, is -15min when maximal humidity is more than 80%.
Fourth condition is：Continuous second preset time period detects outdoor heat exchanger tube temperature To less than the 3rd default temperature
Degree.
For example, when the 3rd preset temperature is -3 DEG C, fourth condition is：＜ -3 DEG C of To.
Fifth condition is：Continuous second preset time period (for example, 1min) detect outdoor heat exchanger tube temperature To and
Outdoor environment temperature Te meets relation To ＜ 0.5 × (Te-20 DEG C).
Wherein, the value range of the second preset temperature is [8 DEG C, 12 DEG C], preferably 10 DEG C.
It should be noted is that each correction factor in the present embodiment selects the optimal value that experiment obtains.
For the defrost process of air-source water heater, concrete example explanation：
Embodiment 1, it is assumed that：First preset temperature is -5 DEG C, and the second preset temperature is 10 DEG C, and the first preset time period is not
Carry out 3h, the second preset time period is 1min, local Ty-max=-8 DEG C of the highest temperature, 3 grades of moderate snow, wind-force, unit water heating mould
Formula accumulated running time t=111min, outdoor heat exchanger tube temperature To and outdoor environment temperature Te meet ＜ -5 DEG C of relation To-Te；
Due to Ty-max=-8 DEG C ＜ -5 DEG C, judge whether to control unit according to the step S12 in Fig. 1 embodiments
Frost.
First condition judges：T0+t1+t2=120min-15min+5min=110min,
T=111min ＞ 110min, therefore, first condition meet；
Second condition judges：Meet ＜ -5 DEG C of relation To-Te, therefore, second condition meets；
To sum up determine that air-source water heater enters defrost process.
Embodiment 2, it is assumed that：First preset temperature is -5 DEG C, and the second preset temperature is 10 DEG C, the 3rd -3 DEG C of preset temperature,
First preset time period is future 3h, and the second preset time period is 1min, local Ty-min=-3 DEG C of the lowest temperature, local highest
Ty-max=6 DEG C of temperature, humidity 50%-70%, cloudy day, 6 grades of wind-force, unit hot water model accumulated running time t=
66min, ＜ -3 DEG C of outdoor heat exchanger tube temperature To, and outdoor heat exchanger tube temperature To and outdoor environment temperature Te meets relation To ＜
0.5×(Te-20℃)；
Due to Ty-min=-3 DEG C ＞ -5 DEG C, and Ty-max=6 DEG C of 10 DEG C of ＜, therefore according to the step in Fig. 1 embodiments
S13 judges whether to control unit defrost.
Third condition judges：T00+t11+t2+t3=80min+0min-5min-10min=65min,
T=66min ＞ 65min, therefore, third condition meet；
Fourth condition judges：Due to ＜ -3 DEG C of To, fourth condition meets；
Fifth condition judges：Meet relation To ＜ 0.5 × (Te-20 DEG C), therefore, fifth condition meets；
To sum up determine that air-source water heater enters defrost process.
It in summary it can be seen, the present invention gathers the weather forecast information of units' installation locality first, pre- then in conjunction with weather
Notify breath and outdoor environment temperature, outdoor heat exchange tube temperature and the selection defrost of unit hot water model accumulated running time enters bar
Part.Compared to existing technologies, present invention incorporates units' installation Local Weather Report information, therefore can more accurately control
Unit defrost processed, so as to effectively reduce " false defrost action ", or enter defrost action too early/generation too late so that air
Energy water heater is more energy saving, economical, and improves the operational effect of air-source water heater to a certain extent.
In order to further optimize the above embodiments, the invention also discloses the condition for not entering defrost.
Referring to Fig. 2, the defrosting method flow chart of a kind of air-source water heater disclosed in another embodiment of the present invention, with reference to figure
1 and Fig. 2, after step s 11, further includes：
Step S14, when the local lowest temperature exceedes second preset temperature, control unit is pre- described first
If do not enter defrost in the period.
Wherein, the value of the second preset temperature and the first preset time period is the same as above-mentioned.
Illustrate, it is assumed that local Ty-min=15 DEG C of the lowest temperature in weather forecast prediction future 3h, due to Ty-min
=15 DEG C of 10 DEG C of ＞, then control unit not enter defrost in following 3h.
In order to further optimize the above embodiments, the invention also discloses the condition that unit exits defrost.
Referring to Fig. 3, the defrosting method flow chart of a kind of air-source water heater disclosed in another embodiment of the present invention, with reference to figure
1 and Fig. 3, after step S12 or step S13, further includes：
Step S15, meet any one condition in Article 6 part, Article 7 part and Article 8 part, control unit to move back
Go out defrost；
Article 6 part is：Continuous 3rd preset time period detects outdoor heat exchanger tube temperature To not less than the 4th default temperature
Degree；
Wherein, the 3rd preset time period and the 4th equal depend on the actual needs of preset temperature, such as the 3rd preset time
Section is 5s, and the 4th preset temperature is 15 DEG C.
Article 7 part is：Continuous second preset time period (such as 1min) detects that outdoor heat exchanger tube temperature To is not low
In second preset temperature (such as 10 DEG C).
Article 8 part is：Defrost accumulated running time reaches the 4th preset time period (such as 10min).
Wherein, step S15 can also be performed after the step S12 or step S13 in Fig. 2 disclosed embodiments.
It should be noted is that in the various embodiments described above, each preset time period and each preset temperature are needed according to actual
Depending on wanting, the present invention does not limit herein.
It in summary it can be seen, the present invention gathers the weather forecast information of units' installation locality first, pre- then in conjunction with weather
Notify breath and outdoor environment temperature, outdoor heat exchange tube temperature and the selection defrost of unit hot water model accumulated running time enters bar
Part.Compared to existing technologies, present invention incorporates units' installation Local Weather Report information, therefore can more accurately control
Unit defrost processed, so as to effectively reduce " false defrost action ", or enter defrost action too early/generation too late so that air
Energy water heater is more energy saving, economical, and improves the operational effect of air-source water heater to a certain extent.
Also, the present invention also carries out the condition for not entering defrost and the condition for exiting defrost using weather forecast information
Reset so that unit run at low temperature it is more efficiently and economical.
Corresponding with above method embodiment, invention additionally discloses a kind of defrosting system of air-source water heater.
Referring to Fig. 4, a kind of structure diagram of the defrosting system of air-source water heater disclosed by the embodiments of the present invention, bag
Include：
Collecting unit 21, for gathering weather forecast information of the units' installation locality in the first preset time period；
Wherein, the first preset time period depend on the actual needs, can be the shortest time that can forecast of weather forecast or
It is a regular time section, such as future 3h.
Weather forecast information includes：Weather conditions (the rain or shine sleet of units' installation locality in the first preset time period
Deng), wind-force, local highest temperature Ty-max, locality lowest temperature Ty-min and humidity Tw etc..
First control unit 22, the local highest temperature for being indicated when the weather forecast information are default less than first warm
When spending, while meet following two conditions, control unit defrost；
First condition is：Unit hot water model accumulated running time t >=t0+t1+t2；
Wherein, t0 is the first preset time, 100min~150min, preferably 120min；
T1 is the first weather correction factor, and rain or shine weather is 0, and rain, snowy day gas are -15min；
T2 is wind scale correction factor, is 5min when 0-3 grades of wind-force, and 4-5 grades of whens are -5min when being 0,6-7 grades, 8 grades with
It was -10min when upper；
Second condition is：Continuous second preset time period detects outdoor heat exchanger tube temperature To and outdoor environment temperature Te's
The temperature difference is less than fiducial temperature；
Wherein, the value range of the first preset temperature is [- 7 DEG C, -3 DEG C], preferably -5 DEG C.
The value range of fiducial temperature is [- 7 DEG C, -3 DEG C], preferably -5 DEG C.
Second preset time period is 1min.
Second control unit 23, the local lowest temperature for being indicated when the weather forecast information are not less than described first
Preset temperature, and when the local highest temperature is no more than the second preset temperature, while meet following three condition, control unit
Defrost, wherein, second preset temperature is higher than first preset temperature；
Third condition is：Unit hot water model accumulated running time t >=t00+t11+t2+t3；
Wherein, t00 is the second preset time, 60min~100min, preferably 80min；
T11 is the second weather correction factor, and rain or shine weather is 0, and rain, snowy day gas are -10min；
T2 is wind scale correction factor, is 5min when 0-3 grades of wind-force, and 4-5 grades of whens are -5min when being 0,6-7 grades, 8 grades with
It was -10min when upper；
T3 is humidity correction factor, be 10min when maximal humidity is less than 40%, is 0 during maximal humidity 40%-60%,
It is -10min during maximal humidity 60%-80%, is -15min when maximal humidity is more than 80%.
Fourth condition is：Continuous second preset time period detects outdoor heat exchanger tube temperature To less than the 3rd default temperature
Degree.
For example, when the 3rd preset temperature is -3 DEG C, fourth condition is：＜ -3 DEG C of To.
Fifth condition is：Continuous second preset time period (for example, 1min) detect outdoor heat exchanger tube temperature To and
Outdoor environment temperature Te meets relation To ＜ 0.5 × (Te-20 DEG C).
Preferably, the value range of the second preset temperature is [8 DEG C, 12 DEG C], preferably 10 DEG C.
It should be noted is that each correction factor in the present embodiment selects the optimal value that experiment obtains.
It in summary it can be seen, the present invention gathers the weather forecast information of units' installation locality first, pre- then in conjunction with weather
Notify breath and outdoor environment temperature, outdoor heat exchange tube temperature and the selection defrost of unit hot water model accumulated running time enters bar
Part.Compared to existing technologies, present invention incorporates units' installation Local Weather Report information, therefore can more accurately control
Unit defrost processed, so as to effectively reduce " false defrost action ", or enter defrost action too early/generation too late so that air
Energy water heater is more energy saving, economical, and improves the operational effect of air-source water heater to a certain extent.
In order to further optimize the above embodiments, the 3rd control for not entering defrost the invention also discloses control unit is single
Member.
Referring to Fig. 5, a kind of structure diagram of the defrosting system of air-source water heater disclosed in another embodiment of the present invention,
With reference to Fig. 4 and Fig. 5, further include：
3rd control unit 24, for gathering weather of the units' installation locality in the first preset time period in collecting unit 21
After forecast information, when the local lowest temperature exceedes second preset temperature, control unit is default described first
Do not enter defrost in period.
Wherein, the value of the second preset temperature and the first preset time period is the same as above-mentioned.
In order to further optimize the above embodiments, the invention also discloses the 4th control unit that control unit exits defrost.
Referring to Fig. 6, a kind of structure diagram of the defrosting system of air-source water heater disclosed in another embodiment of the present invention,
With reference to Fig. 4 and Fig. 6, further include：
4th control unit 25, it is single after controlling unit defrost in the first control unit 22, or in the second control
After member 23 controls unit defrost, meet following either condition, control unit exits defrost；
Article 6 part is：Continuous 3rd preset time period detects outdoor heat exchanger tube temperature To not less than the 4th default temperature
Degree；
Wherein, the 3rd preset time period and the 4th equal depend on the actual needs of preset temperature, such as the 3rd preset time
Section is 5s, and the 4th preset temperature is 15 DEG C.
Article 7 part is：Continuous second preset time period (such as 1min) detects that outdoor heat exchanger tube temperature To is not low
In second preset temperature (such as 10 DEG C).
Article 8 part is：Defrost accumulated running time reaches the 4th preset time period (such as 10min).
Wherein, the 4th control unit 25 also can control unit in Fig. 5 disclosed embodiments in the first control unit 22
After frost, or performed after the second control unit 23 controls unit defrost and exit defrost action.
It should be noted is that in the various embodiments described above, each preset time period and each preset temperature are needed according to actual
Depending on wanting, the present invention does not limit herein.
It in summary it can be seen, the present invention gathers the weather forecast information of units' installation locality first, pre- then in conjunction with weather
Notify breath and outdoor environment temperature, outdoor heat exchange tube temperature and the selection defrost of unit hot water model accumulated running time enters bar
Part.Compared to existing technologies, present invention incorporates units' installation Local Weather Report information, therefore can more accurately control
Unit defrost processed, so as to effectively reduce " false defrost action ", or enter defrost action too early/generation too late so that air
Energy water heater is more energy saving, economical, and improves the operational effect of air-source water heater to a certain extent.
Also, the present invention also carries out the condition for not entering defrost and the condition for exiting defrost using weather forecast information
Reset so that unit run at low temperature it is more efficiently and economical.
It should be noted is that the same embodiment of the method for the operation principle of each part in system embodiment.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (10)
- A kind of 1. defrosting method of air-source water heater, it is characterised in that including：Gather weather forecast information of the units' installation locality in the first preset time period；When the local highest temperature of weather forecast information instruction is less than the first preset temperature, while meet following two bars Part, controls unit defrost；Unit hot water model accumulated running time t >=t0+t1+t2, wherein, t0 is the first preset time, and t1 is the first weather Correction factor, t2 are wind scale correction factor；Continuous second preset time period detects the temperature difference of outdoor heat exchanger tube temperature To and outdoor environment temperature Te less than default temperature Difference；When the local lowest temperature of weather forecast information instruction is not less than first preset temperature, and the local highest When temperature is no more than the second preset temperature, while meet following three condition, control unit defrost, wherein, described second is default Temperature is higher than first preset temperature；Unit hot water model accumulated running time t >=t00+t11+t2+t3, wherein, t00 is the second preset time, t11 Two weather correction factors, t2 are wind scale correction factor, and t3 is humidity correction factor；Continuous second preset time period detects that outdoor heat exchanger tube temperature To is less than the 3rd preset temperature；Continuous second preset time period detects that outdoor heat exchanger tube temperature To and outdoor environment temperature Te meets relation To ＜ 0.5×(Te-20℃)。
- 2. defrosting method according to claim 1, it is characterised in that further include：When the local lowest temperature exceedes second preset temperature, control unit in first preset time period not Into defrost.
- 3. defrosting method according to claim 1, it is characterised in that further include：Meet following either condition, control unit exits defrost；Continuous 3rd preset time period detects that outdoor heat exchanger tube temperature To is not less than the 4th preset temperature；Continuous second preset time period detects that outdoor heat exchanger tube temperature To is not less than second preset temperature；Defrost accumulated running time reaches the 4th preset time period.
- 4. defrosting method according to any one of claims 1 to 3, it is characterised in that the value of first preset temperature Scope is [- 7 DEG C, -3 DEG C].
- 5. defrosting method according to any one of claims 1 to 3, it is characterised in that the value of second preset temperature Scope is [8 DEG C, 12 DEG C].
- 6. a kind of defrosting system of air-source water heater, including：Collecting unit, it is default first for gathering units' installation locality The weather forecast information of period；It is characterized in that, further include：First control unit, when the local highest temperature for being indicated when the weather forecast information is less than the first preset temperature, Meet following two conditions at the same time, control unit defrost；Unit hot water model accumulated running time t >=t0+t1+t2, wherein, t0 is the first preset time, and t1 is the first weather Correction factor, t2 are wind scale correction factor；Continuous second preset time period detects the temperature difference of outdoor heat exchanger tube temperature To and outdoor environment temperature Te less than default temperature Difference；Second control unit, the local lowest temperature for being indicated when the weather forecast information are default not less than described first warm Degree, and when the local highest temperature is no more than the second preset temperature, while meet following three condition, control unit defrost, Wherein, second preset temperature is higher than first preset temperature；Unit hot water model accumulated running time t >=t00+t11+t2+t3, wherein, t00 is the second preset time, t11 Two weather correction factors, t2 are wind scale correction factor, and t3 is humidity correction factor；Continuous second preset time period detects that outdoor heat exchanger tube temperature To is less than the 3rd preset temperature；Continuous second preset time period detects that outdoor heat exchanger tube temperature To and outdoor environment temperature Te meets relation To ＜ 0.5×(Te-20℃)。
- 7. defrosting system according to claim 6, it is characterised in that further include：3rd control unit, for gathering weather forecast of the units' installation locality in the first preset time period in the collecting unit After information, when the local lowest temperature exceedes second preset temperature, control unit is in first preset time Do not enter defrost in section.
- 8. defrosting system according to claim 6, it is characterised in that further include：4th control unit, it is single after controlling unit defrost in first control unit, or in the described second control After member control unit defrost, meet following either condition, control unit exits defrost；Continuous 3rd preset time period detects that outdoor heat exchanger tube temperature To is not less than the 4th preset temperature；Continuous second preset time period detects that outdoor heat exchanger tube temperature To is not less than second preset temperature；Defrost accumulated running time reaches the 4th preset time period.
- 9. according to claim 6 to 8 any one of them defrosting system, it is characterised in that the value of first preset temperature Scope is [- 7 DEG C, -3 DEG C].
- 10. according to claim 6 to 8 any one of them defrosting system, it is characterised in that the value of second preset temperature Scope is [8 DEG C, 12 DEG C].
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105972862A (en) * | 2016-05-18 | 2016-09-28 | 珠海格力电器股份有限公司 | Defrosting method and device for heat pump and heat pump |
| CN106545961B (en) * | 2016-10-24 | 2020-04-21 | 珠海格力电器股份有限公司 | Control method of air conditioner chassis heating belt and air conditioning system |
| CN108266898B (en) * | 2016-12-30 | 2020-12-22 | 青岛海尔新能源电器有限公司 | Defrosting control method and system for air energy water heater |
| CN108917246A (en) * | 2018-05-21 | 2018-11-30 | 顺德职业技术学院 | The defrosting method of frequency conversion air source hot pump water heater |
| CN110017582B (en) * | 2019-02-28 | 2021-12-24 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner |
| CN112050368B (en) * | 2019-06-07 | 2022-07-15 | 重庆海尔空调器有限公司 | Control method and device for defrosting of air conditioner, air conditioner and server |
| CN113977347B (en) * | 2021-11-19 | 2023-06-16 | 深圳市万嘉科技有限公司 | Control method, equipment and computer readable storage medium for ultra-precision machine tool |
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