CN109114806A - A kind of air source water heater and its Defrost method - Google Patents
A kind of air source water heater and its Defrost method Download PDFInfo
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- CN109114806A CN109114806A CN201810936929.3A CN201810936929A CN109114806A CN 109114806 A CN109114806 A CN 109114806A CN 201810936929 A CN201810936929 A CN 201810936929A CN 109114806 A CN109114806 A CN 109114806A
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- evaporator
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- source water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010257 thawing Methods 0.000 claims abstract description 43
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims abstract description 3
- 238000007664 blowing Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 abstract description 4
- 239000003507 refrigerant Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention relates to technical field of water heaters, and in particular to a kind of air source water heater, comprising: compression circulation line, including sequentially connected compressor, condenser, throttle valve and evaporator, the outlet of the evaporator connect the import of the compressor;Defroster is set to the side of the evaporator, and internal reservoir has for drying to the surface of the evaporator, the compressed air of required heat and power when providing evaporator surface defrosting.The present invention also provides a kind of Defrost methods of air source water heater, and defrosting does not interfere air source water heater hot water preparing simultaneously, and defrosting time is short, high-efficient, and energy utilization rate is high.
Description
Technical field
The present invention relates to technical field of water heaters, and in particular to a kind of air source water heater and its Defrost method.
Background technique
Air source water heater is that the low-temperature heat quantity in air is absorbed into come, and gasifies by fluorine medium, then passes through compression
It is pressurized heating after machine compression, then water supply is converted by heat exchanger and is heated, compressed high temperature heat heats water temperature with this.Air
Source water heater overcomes the disadvantage that solar water heater adopts heat and installation inconvenience by sunlight.Due to the work of air energy water heater
It is by media for heat exchange, therefore it does not need electrical heating elements and directly contacts with water, the danger of electric heater electric leakage is avoided,
It prevents gas heater to be possible to the danger exploded and be poisoned, more effectively controls sky caused by gas heater discharge exhaust gas
Gas pollution.
Air source water heater generally comprises compressor, condenser, liquid storage device, evaporator and gas-liquid separator, when it is low
When running heating under warm environment, the evaporator surface meeting frosting of heat exchange is carried out with air, refrigerant is caused to steam in evaporator
Send out insufficient, evaporating temperature reduces, and refrigerant flow reduces, and influences the working efficiency of heating system, seriously leads to compressor event
Barrier.Thus, it is ensured that air source water heater is normal at low ambient temperatures, stable operation, it is necessary to consider the defrosting problem of evaporator.
Defrost mode common at present has electric heated defrosting, heat water-spraying's defrosting and hot-air bypath defrosting, using electric heated defrosting power consumption
Measure big and not energy-efficient, portion of energy can be lost in air, and be easy to occur when environment temperature is lower that defrosting is difficult to be showed
As;It is defrosted using heat water-spraying larger to water resource waste, it, instead can be and if cannot be cleared by remaining water in time after water drenching
Accelerate frosting velocity during next defrosting;Compressor is easily accessible using the highly pressurised liquid that hot-air bypath defrosting generates, so that
There is hydraulic compression phenomenon and reduces the safety of system in compressor.
In order to solve the above-mentioned technical problem, Chinese patent literature CN102297512A discloses a kind of dual system Defrost
Device, by the way that two sets of defrosting mechanisms are arranged, in defrost mode, the evaporator to defrosting is discharged by the compressor in another circuit
High-temperature gas defrosting heat is provided, and stop working to the circuit where the evaporator of defrosting.This kind of double heat pump assemblies although
Defrosting speed is also accelerated in the safety for improving system to a certain extent, but since which create almost double systems
Cost of manufacture and defrosting cost, and hot water can not be persistently provided for user under defrosting mode, thus popularization and application are hardly resulted in, together
When the system need to absorb heat or auxiliary electrical heater from water and could thoroughly defrost, and be easy to appear the halfway feelings of defrosting
Shape.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming air source water heater in the prior art cannot when defrosting
Guarantee hot water supply, and defrosting efficiency is low, halfway defect, so that a kind of air source water heater and its Defrost method are provided,
Defrosting does not interfere air source water heater hot water preparing simultaneously, and defrosting time is short, high-efficient, and energy utilization rate is high.
In order to solve the above-mentioned technical problems, the present invention provides a kind of air source water heaters, comprising:
Circulation line, including sequentially connected compressor, condenser, throttle valve and evaporator are compressed, the evaporator
Outlet connects the import of the compressor;
Defroster is set to the side of the evaporator, and internal reservoir has for drying to the surface of the evaporator,
The compressed air of required heat and power when providing evaporator surface defrosting.
The defroster includes:
Sequentially connected compressed air generator, at least one first conveyance conduit and several second conveyance conduits, it is described
Second conveyance conduit is towards the apertures for being provided with multiple permission compressed airs on the tube wall of the evaporator surface and spraying.
First conveyance conduit is two disposed in parallel, the opening and the compression of first conveyance conduit
The opening of the outlet of air generator, another opening and another first conveyance conduit is all closed;Several institutes
It states the second conveyance conduit to be arranged in parallel between two first conveyance conduits, and the axial axis with first conveyance conduit
To vertical.
It further include several third conveyance conduits for offering and compressed air being allowed to spray aperture, several third delivery pipes
Road and several second conveyance conduits are grid-shaped staggered.
Further include the bracket for installing the defroster, is spaced between the bracket and the evaporator surface predetermined
Distance setting.
The preset distance is 15-30cm.
The compressed air generator is any of pressure bottle, compressor or manual pressure device.
It further include the first temperature sensor on the outside of the compression circulation line, and the in the evaporator
Two temperature sensors.
The present invention also provides a kind of Defrost method of air source water heater, compressed outside circulation line described in real-time monitoring
The first temperature and the evaporator inside second temperature, when first temperature is less than the first preset value, second temperature
Degree is compared less than the second preset value, and by the difference of first temperature and second temperature with third preset value, when described
Difference is greater than the third preset value, and when the first predetermined time of arrival interval time, controls the defroster and open, to institute
Defrosting is blowed in the surface for stating evaporator, until the second temperature reaches the 4th preset value or the time of blowing defrosting reaches
When to the second predetermined time, stop blowing defrosting, wherein the 4th preset value is greater than second preset value.
The third preset value is 2-15 DEG C, and first predetermined time is 0.5-2.0h, and second predetermined time is
2-20min。
Technical solution of the present invention has the advantages that
1. air source water heater provided by the invention, when evaporator surface frosting, opening internal reservoir has compressed air
Defroster, using defroster to evaporator surface compressed-air blows, compressed air can will both be coagulated by pressure itself
Frost blows off evaporator surface, and can carry out heat exchange with evaporator surface and solidifying frost be promoted to melt, and has that defrosting efficiency is high, defrosting
Time short advantage;And defroster provided by the invention is not necessarily to provide hot gas or hot water by compression circulation line, no
Air source water heater hot water preparing is influenced, can satisfy the demand of hot water preparing while defrosting.
2. air source water heater provided by the invention, by two the first conveyance conduits disposed in parallel, two it is first defeated
The multiple apertures sending several second conveyance conduits being arranged between pipeline and being arranged on the second conveyance conduit, can be empty by compression
Gas is delivered to the second conveyance conduit through the first conveyance conduit from compressed air generator, then from tapping towards evaporator surface
Direction sprays, while the opening of one with the outlet of compressed air generator is only arranged in the first conveyance conduit, guarantees compression
Air has enough power, meanwhile, reduce unnecessary energy waste;Further, by grid-shaped with second pipe
Staggered third conveyance conduit substantially increases compressed air towards evaporator and blows area, so that blowing is uniformly,
Defrosting efficiency is improved, frosting dead angle is avoided the occurrence of, to thoroughly remove evaporator surface frosting.
3. air source water heater provided by the invention, pass through plane where the defroster is set and evaporator surface
Horizontal space is 15-30cm, both can provide enough compressed airs for thoroughly defrosting, and guarantee the enough covering surfaces of compressed air
Product, can also reduce the unnecessary wasting of resources to the greatest extent.
4. the Defrost method of air source water heater provided by the invention, outside compression circulation line described in real-time monitoring
The first temperature and the evaporator inside second temperature, when the first temperature is less than the first preset value, second temperature is less than
Two preset values, and the difference of first temperature and second temperature is compared with third preset value, and simultaneously between monitoring
It every the time, to control turning on or off for defroster, can defrost in time to evaporator surface, it is tight to avoid appearance
Again the case where frosting, it might even be possible to the generation of pre- anti-condensation frost, while also reducing the waste of the energy.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the operation principle schematic diagram of air source water heater of the invention;
Fig. 2 is the schematic diagram of defroster.
Description of symbols:
1, compressor;2, condenser;3, throttle valve;4, evaporator;5, bracket;6, the first conveyance conduit;7, the second conveying
Pipeline;8, aperture;9, blower.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
A kind of specific embodiment of air source water heater as illustrated in fig. 1 and 2, comprising: compression circulation line, including according to
Compressor 1, condenser 2, throttle valve 3 and the evaporator 4 of secondary connection, the outlet of the evaporator 4 connect the compressor 1 into
Mouthful;Defroster, is set to the side of the evaporator 4, and internal reservoir has for drying to the surface of the evaporator 4, with
The compressed air of heat and power required when the defrosting of 4 surface of evaporator is provided.Wherein, compressor 1 will be from by acting
The low-temperature low-pressure refrigerant gas transition absorbed in evaporator 4 is at high-temperature high-pressure refrigerant gas, thus to obtain energy, for
The equipment compressed in circulation line carries out heat exchange;Condenser 2 is used for the high-temperature high-pressure refrigerant gas for flowing out in compressor 1
The cold water flowed out in body and water pipe carries out heat and exchanges, and high-temperature high-pressure refrigerant gas is condensed into cryogenic high pressure refrigerant liquid
And amount of heat is released, for heating the cold water in the water pipe for flowing through condenser 2, the water after heating is flowed out through outlet pipe for user
It uses;Then the liquid that cryogenic high pressure refrigerant liquid is transformed into low-temp low-pressure after the decompression of throttle valve 3 is delivered to evaporator 4,
Heat in evaporator 4 in the liquid absorption surrounding air of low-temp low-pressure, is transformed into low-temperature low-pressure refrigerant gas after evaporation,
Low-temperature low-pressure refrigerant gas is inhaled into the acting of compressor 1 again, recycles repeatedly, thus continuous hot water preparing.In order to enable
The liquid of low-temp low-pressure is easier to absorb the heat in the air around evaporator 4, and a blower 9 can also be arranged at evaporator 4.
Defroster can be set in the other side opposite with blower 9, and the surface of evaporator 4 is completely covered in air outlet as far as possible.
Specifically, the defroster includes: sequentially connected compressed air generator, at least one first conveyance conduit
6 and several second conveyance conduits 7, second conveyance conduit 7 multiple is permitted towards being provided on the tube wall on 4 surface of evaporator
Perhaps the aperture 8 that compressed air sprays, for the compressed air generator for generating compressed air, the compressed air generator can
Think any of pressure bottle, compressor 1 or manual pressure device;First conveyance conduit 6 is used for compressed air
Each second conveyance conduit 7 is delivered to by compressed air generator, then towards evaporator 4 from the aperture 8 of the second conveyance conduit 7
The direction on surface sprays, and multiple apertures 8 are uniformly distributed along the axial direction of the second conveyance conduit 7, to increase projected area, guarantee simultaneously
Injection is uniform.The compressed air of ejection can not only blow off solidifying frost 4 surface of evaporator by pressure itself, but also can be with 4 table of evaporator
Face carries out heat exchange and solidifying frost is promoted to melt, to realize highly effective defrosting.Certainly, in order to improve jeting effect, in the first conveying
Pipeline 6 is towards can also be uniformly arranged multiple apertures 8 on the tube wall on 4 surface of evaporator.
In the present embodiment, first conveyance conduit 6 is two up and down disposed in parallel, first delivery pipe of upside
The outlet of the left side opening and the compressed air generator in road 6, right openings and the first conveyance conduit of downside 6 are opened
Mouth is all closed, to prevent the leakage of compressed air;Several second conveyance conduits 7 are arranged in parallel in two first conveyings
Between pipeline 6, and it is axial axially vertical with first conveyance conduit 6.First conveyance conduit 6 and the second conveyance conduit 7 are
Vertical arrangement, and aperture 8 is towards the surface of evaporator 4.
It further include that several offer allows to press to further increase the uniformity of the compressed air sprayed from defroster
Contracting air sprays the third conveyance conduit of aperture 8, and several third conveyance conduits and several second conveyance conduits 7 are in net
Trellis is staggered.That is, the axially vertical setting of the axial direction of third conveyance conduit and the second conveyance conduit 7, and several thirds are defeated
It send pipeline enclosure every parallel arrangement, the latticed of intersection is consequently formed.
It further include the bracket 5 for installing the defroster, the bracket 5 and the evaporator are spaced between 4 surface
Preset distance setting.In the present embodiment, the range of the preset distance can be in 15-30cm.It is provided on bracket 5 for pacifying
The groove body of the first conveyance conduit 6 and the second conveyance conduit 7 is filled, the first conveyance conduit 6 and the second conveyance conduit 7 are being installed in place
Afterwards, it is further fixed by modes such as welding, to guarantee fastness and leakproofness.
It further include being set to the compression to follow to preferably monitor the temperature on the outside of compression circulation line and in evaporator 4
The first temperature sensor on the outside of endless tube road, and the second temperature sensor in the evaporator 4.
Specifically used process: when user needs water heating, compressor 1 sucks low-temp low-pressure system from evaporator 4 first
Refrigerant gas, by the acting of compressor 1 by low-temperature low-pressure refrigerant gas compression at high temperature and high pressure gas, then high temperature and pressure system
Refrigerant gas enters condenser 2 from the left side of condenser 2, while the cold water in water pipe enters condenser 2 from right side, with high temperature height
Compression refrigerant gas carries out heat exchange, is condensed into cryogenic high pressure refrigerant liquid in 2 high temperature higher pressure refrigerant gas of condenser
Body and release amount of heat, for heating the cold water in the water pipe for flowing through condenser 2, cold water flows out after absorbing heat through outlet pipe
It is used to user terminal;Then the liquid that cryogenic high pressure refrigerant liquid is transformed into low-temp low-pressure after the decompression of throttle valve 3 is delivered to
Evaporator 4, the heat in evaporator 4 in the liquid absorption surrounding air of low-temp low-pressure, is transformed into low-temp low-pressure system after evaporation
Refrigerant gas, low-temperature low-pressure refrigerant gas suck the acting of compressor 1 again, recycle repeatedly, thus hot water preparing.
When air source water heater is using a period of time, when 4 surface frosting of evaporator, compressed air generator is opened, is utilized
Compressed air generator generates compressed air, and compressed air is delivered to each second conveyance conduit 7 through the first conveyance conduit 6, then
It is sprayed from the aperture 8 of the second conveyance conduit 7 towards the direction on 4 surface of evaporator, the compressed air of ejection can both rely on itself
Pressure blows off solidifying frost 4 surface of evaporator, and can carry out heat exchange with 4 surface of evaporator and solidifying frost be promoted to melt, to realize
Highly effective defrosting.The first temperature and steaming on the outside of first temperature sensor and second temperature sensor real-time monitoring compression circulation line
The second temperature inside device 4 is sent out, and according to the difference of the first temperature and second temperature according to pre-provisioning request control compressed air hair
The opening and closing of raw device realize blowing defrosting on demand, save the energy.
Embodiment 2
A kind of specific embodiment of the Defrost method of air source water heater, comprising:
S1: the first temperature outside compression circulation line described in real-time monitoring and the second temperature inside the evaporator 4;
S2: when first temperature is less than the first preset value, the second temperature is less than the second preset value, by described first
The difference of temperature and second temperature is compared with third preset value, when the difference is greater than the third preset value, and interval
When time reached for the first predetermined time, controls the defroster and opens, defrosting is blowed to the surface of the evaporator 4,
When the second temperature reaches the 4th preset value or the time defrosted of drying reached for the second predetermined time, stops blowing and remove
Frost, wherein the 4th preset value is greater than second preset value;As long as above-mentioned either condition is unsatisfactory for, defroster is equal
Defrosting will not be blowed.The setting of first predetermined time is that the first temperature sensor and second temperature sensor are supervised in order to prevent
The defrosting occurred when indeterminacy not in time the case where, the second predetermined time can flexibly set according to environment temperature and frosting situation
It sets.
Defrost method of the present invention can defrost while hot water preparing, compress circulating line without influencing
Hot water preparing, in the present embodiment, the third preset value be may range from 2-15 DEG C, and first predetermined time is 0.5-
2.0h, second predetermined time are 2-20min, and the third preset value, the first predetermined time and the second predetermined time are to provide
One embodiment, the numerical value being specifically arranged need artificially to be determined according to different geographical actually located season and environment.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of air source water heater characterized by comprising
Circulation line, including sequentially connected compressor (1), condenser (2), throttle valve (3) and evaporator (4) are compressed, it is described
The outlet of evaporator (4) connects the import of the compressor (1);
Defroster, is set to the side of the evaporator (4), and internal reservoir has for blowing to the surface of the evaporator (4)
Wind, the compressed air of required heat and power when providing the defrosting of the evaporator (4) surface.
2. air source water heater according to claim 1, which is characterized in that the defroster includes:
Sequentially connected compressed air generator, at least one first conveyance conduit (6) and several second conveyance conduits (7), institute
The second conveyance conduit (7) is stated to open towards be provided with that multiple permission compressed airs spray on the tube wall on the evaporator (4) surface
Hole (8).
3. air source water heater according to claim 2, which is characterized in that first conveyance conduit (6) is to set in parallel
Two set, the opening and the outlet of the compressed air generator of first conveyance conduit (6), another is opened
The opening of mouth and another first conveyance conduit (6) is all closed;Several second conveyance conduits (7) are arranged in parallel in
Between two first conveyance conduits (6), and it is axial axially vertical with first conveyance conduit (6).
4. air source water heater according to claim 3, which is characterized in that further include several offering permission compressed air
The third conveyance conduit of aperture (8) is sprayed, several third conveyance conduits and several second conveyance conduits (7) are in grid
Shape is staggered.
5. air source water heater according to claim 1-4, which is characterized in that further include for installing described remove
The bracket (5) of white device is spaced a predetermined distance setting between the bracket (5) and the evaporator (4) surface.
6. air source water heater according to claim 5, which is characterized in that the preset distance is 15-30cm.
7. according to the described in any item air source water heaters of claim 2-4, which is characterized in that the compressed air generator is
Any of pressure bottle, compressor or manual pressure device.
8. air source water heater according to claim 1-4, which is characterized in that further include being set to the compression to follow
The first temperature sensor on the outside of endless tube road, and the second temperature sensor being set in the evaporator (4).
9. a kind of Defrost method of air source water heater, which is characterized in that the outside compression circulation line described in real-time monitoring
The second temperature of one temperature and the evaporator (4) inside, when first temperature is less than the first preset value, the second temperature
It is compared less than the second preset value, and by the difference of first temperature and second temperature with third preset value, when the difference
Value is greater than the third preset value, and when the first predetermined time of arrival interval time, controls the defroster and open, to described
Defrosting is blowed in the surface of evaporator (4), until the second temperature reaches the time of the 4th preset value or blowing defrosting
When reaching for the second predetermined time, stop blowing defrosting, wherein the 4th preset value is greater than second preset value.
10. Defrost method according to claim 9, which is characterized in that the third preset value be 2-15 DEG C, described first
Predetermined time is 0.5-2.0h, and second predetermined time is 2-20min.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111664578A (en) * | 2020-07-06 | 2020-09-15 | 高才林 | Air energy water heater |
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CN105571222A (en) * | 2015-12-22 | 2016-05-11 | 佛山欧思丹热能科技有限公司 | Heat pump defrosting control method |
CN106705502A (en) * | 2017-02-13 | 2017-05-24 | 硕楠 | Evaporator dedusting and defrosting system of air source heat pump |
CN208794727U (en) * | 2018-08-16 | 2019-04-26 | 浙江正理生能科技有限公司 | A kind of air source water heater |
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CN111664578A (en) * | 2020-07-06 | 2020-09-15 | 高才林 | Air energy water heater |
CN111664578B (en) * | 2020-07-06 | 2021-07-06 | 浙江康意洁具有限公司 | Air energy water heater |
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