CN110887169A - Air conditioner defrosting control method and device and air conditioner - Google Patents
Air conditioner defrosting control method and device and air conditioner Download PDFInfo
- Publication number
- CN110887169A CN110887169A CN201910984734.0A CN201910984734A CN110887169A CN 110887169 A CN110887169 A CN 110887169A CN 201910984734 A CN201910984734 A CN 201910984734A CN 110887169 A CN110887169 A CN 110887169A
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- air conditioner
- defrosting
- heat exchanger
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- outdoor heat
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- 238000010257 thawing Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 4
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F24F11/41—Defrosting; Preventing freezing
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner defrosting control method and device and an air conditioner. The invention utilizes the air blocking device to block the outdoor heat exchanger which is defrosting, can effectively keep the temperature in the defrosting process, avoids the external influence on the defrosting temperature so as to reduce the defrosting efficiency, simultaneously does not influence the heating effect of the air conditioner, and improves the comfort of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method and device and an air conditioner.
Background
When a traditional vapor compression type air conditioning system heats, the problem that an outdoor heat exchanger is easy to frost is solved. When the heat exchanger frosts to a certain degree, the heat exchange efficiency of the air conditioner is reduced, and at the moment, the air conditioner is required to be converted into a refrigeration state to defrost the outdoor heat exchanger. The actual heating capacity of the air conditioner is reduced, and the indoor unit fan is frequently started/stopped in the defrosting process, so that the comfort experience of a user is poor.
Some technical solutions are proposed in the prior art for the problem, such as an air conditioning system of chinese patent with application number cn201720291524.x, which discloses an air conditioning system including: the indoor heat exchanger, the switching module and at least two outdoor heat exchanger branches; the outdoor heat exchanger branch comprises an outdoor heat exchanger and a first throttling device which are connected in series, and the first throttling device is connected with the indoor heat exchanger; the switching module includes: and the first reversing valves are in one-to-one correspondence with the outdoor heat exchanger branches and enable the outdoor heat exchanger branches and the indoor heat exchanger to be switched between series connection and parallel connection. The air conditioning system improves the defrosting effect on the basis of heat supply during defrosting; however, the outdoor heat exchangers in the patent are distributed in the vertical direction, and when one heat exchanger needs defrosting, the other heat exchanger is also used for heating, so in order to ensure the heating capacity of the other heat exchanger, the outer fan must be operated, but the operation of the outer fan greatly affects the defrosting effect of the defrosting heat exchanger, and even the air conditioner cannot defrost below zero. That is, when the defrosting outer ring is below zero, the operation of the outer fan enables the defrosting heat exchanger to defrost while defrosting, and the circulation is carried out, so that the heating effect of the air conditioner is reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an air conditioner defrosting control method and device, which adopt a rolling canvas wind blocking method to realize that the defrosting effect of a defrosting heat exchanger is not attenuated when an outer fan runs.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an air conditioner defrosting control device, includes two stifled wind devices, two stifled wind devices set up respectively on two outer fans of outer machine of air conditioner, stifled wind device is used for blockking up outdoor heat exchanger in the period of external machine frost. Utilize the stifled wind device to plug up the outdoor heat exchanger that is changing the frost, can effectively keep changing the temperature of frost in-process, thereby avoid the outside to influence the defrosting temperature and reduce and change the frost efficiency, can not influence the air conditioner effect of heating simultaneously, improve the travelling comfort that the user used.
Furthermore, the wind blocking device comprises a motor, a rolling shaft and a canvas, wherein the motor drives the rolling shaft to rotate, and the rolling shaft drives the canvas to descend or ascend. The winding shaft is driven by the motor to further drive the canvas to descend or ascend, the canvas descends to block the outdoor heat exchanger when frost is needed to be defrosted and blocked, and the canvas is controlled to ascend to restore after frost is defrosted, so that the defrosting efficiency can be effectively guaranteed.
Furthermore, the wind blocking device further comprises guide rails and guide blocks, the guide rails are arranged on two sides of the lower portion of the rolling shaft, the guide blocks are arranged at the bottoms of the canvases, and the guide blocks can slide in the guide rails. The guide rail is used for guiding the decline or the ascending direction of canvas, can make canvas can neatly orderly rise or descend through the guide block, and self weight and the guide block both ends through the guide block extend to inside the guide rail simultaneously for the canvas is unlikely to be scraped at strong wind weather and scrapes the turn-over.
Furthermore, a water receiving tray is arranged below the air plugging device. The water receiving plate is used for receiving water which is frosted during defrosting, so that water is prevented from dripping into the air conditioner to affect work, and accidents caused by the fact that the water directly drips on the ground are avoided.
An air conditioner defrosting control method uses the air conditioner defrosting control device, when the temperature of the outdoor heat exchanger tube is detected to reach a defrosting condition, the air blocking device is controlled to completely block the outdoor heat exchanger. After working under the heating mode, the temperature of outdoor heat exchanger can continuously descend, and the pipe temperature when outdoor heat exchanger drops to certain extent and indicates to get into the defrosting promptly, for the outdoor heat exchanger's that guarantees to change the frost defrosting temperature of defrosting at the defrosting in-process to and prevent the outside influence to changing the frost temperature, the outdoor heat exchanger that needs to change the frost is all stopped up to control stifled wind device, can effectively improve the efficiency of defrosting.
Furthermore, when the temperature of the outdoor heat exchanger tube is detected to be within a normal working range, the defrosting is judged to be finished, and the air blocking device is controlled to restore to the original state, namely the outdoor heat exchanger is not blocked. When defrosting is finished, namely air does not need to be blocked, the air blocking device is controlled to restore to the original state, the air conditioner continues to operate subsequently, and the air blocking device is prevented from being blocked all the time to influence the working effect of the air conditioner.
Further, the step of controlling the air blocking device to completely block the outdoor heat exchanger specifically comprises: and theoretically calculating to obtain the theoretical running time of the outdoor heat exchanger blocked by the air blocking device, and adding Y seconds on the theoretical running time as an actual running time set value, wherein Y is the set value. And a small margin time is added in the theoretical operation time, so that the outdoor heat exchanger can be completely blocked by the air blocking device, and the defrosting efficiency is guaranteed.
A computer-readable storage medium storing a computer program that when invoked by a processor implements the air conditioner defrost control method of any of the above.
The air conditioner comprises an outer machine, wherein two outer fans are arranged in the outer machine, and the outer fans are provided with the air conditioner defrosting control device.
The air conditioner defrosting control method, the air conditioner defrosting control device and the air conditioner have the beneficial effects that: the problem that the defrosting effect of an air conditioning system which is continuously heated and defrosts and does not shut down is reduced when an external fan is turned on for defrosting in stages is effectively solved, and the problem that the air conditioning system cannot be effectively used below zero is solved; the using conditions of the air conditioning system which is continuously heated and defrosted before without stopping are expanded, and the using effect is improved; the air quantity and the air speed of the heating heat exchanger can be increased under the same rotating speed of the external fan by blocking the defrosting heat exchanger, so that the heating effect is improved.
Drawings
Fig. 1 is a schematic structural view of the wind blocking device of the present invention.
In the figure: 1. a motor; 2. a rolling shaft; 3. a guide rail; 4. canvas; 5. and a guide block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of the present invention.
Example 1: an air conditioner defrosting control device.
The utility model provides an air conditioner defrosting control device, includes two stifled wind devices, two stifled wind devices set up respectively on two outer fans of the outer machine of air conditioner, stifled wind device is used for plugging up outdoor heat exchanger in the period of external machine defrosting, and stifled wind device includes motor 1, rolling shaft 2, canvas 4, guide rail 3 and guide block 5, motor 1 drives rolling shaft 2 and rotates clockwise and anticlockwise to drive canvas 4 through friction transmission and go up and down, guide block 5 sets up in canvas 4's bottom, and inside guide block 5 both ends extended to guide rail 3, canvas 4 below still was provided with the water collector.
The working principle of the embodiment is as follows: when the air conditioner heats, the two wind blocking sailcloths 4 are in a rolling state, along with the continuous heating of the air conditioner, when a certain outdoor heat exchanger is subjected to defrosting conditions when the temperature of a pipe reaches, the corresponding wind blocking device motor is started to drive the wind blocking sailcloths 4 to descend, when the wind blocking sailcloths 4 completely block the outdoor heat exchanger needing defrosting, a defrosting channel of the heat exchanger is opened to defrost, when defrosting exits, the heating channel is opened, and meanwhile, the motor 1 drives the wind blocking sailcloths 4 to ascend to an initial state. When the defrosting condition is met when the temperature of the other outdoor heat exchanger reaches, the control is also carried out according to the method.
Because the wind blocking canvas 4 is softer, the transmitted friction driving force is more dispersed, and the canvas 4 is easy to curl or even block when the canvas 4 is unfolded or descended. Therefore, one metal guide block 5 is kneaded at the lower end of the canvas 4, the metal guide block 5 has two functions, one is that when the canvas 4 is rolled up and opened, the canvas 4 can ascend and descend orderly through the metal guide block 5 at the front end, and the two ends of the metal guide block 5 extend into the guide rail 3 through the self weight of the metal guide block 5 so that the canvas 4 is not scraped and turned over in strong wind weather.
According to the fact that the length of the roller shutter is fixed, the rotating speed of the motor 1 is not changed, theoretical falling time of the device can be obtained through theoretical calculation, and in order to guarantee complete blocking, the falling time (the running time of the electromechanical 1) can be a theoretical value plus a small margin time (2-4 s), and then the running time set value of the motor 1 in an actual program can be obtained.
If the two heat exchanger tubes do not have much temperature difference to reach the defrosting condition at the same time, the procedure can be optimized to ensure the integrity of the procedure, i.e. when the upper and lower condenser tubes reach the same temperature, the defrosting of the upper condenser can be preferentially defaulted. Secondly, according to the actual conditions, entering into defrosting simultaneously is also possible to appear at the first start-up, and the condenser that enters into defrosting removes the heating again, and the effect can attenuate, but the heating air-out temperature also can realize guaranteeing through the wind-break conversion, does not influence the travelling comfort, can make up completely that the heating amount is zero when the prior art changes the frost defect. And with the alternate progress of the defrosting and frosting of the upper condenser and the lower condenser, the continuous heating effect has periodicity, and the condition that the defrosting is simultaneously carried out cannot occur.
Example 2: an air conditioner defrosting control method.
An air conditioner defrosting control method specifically comprises the following steps:
when the air conditioner heats, the two wind blocking sailcloths 4 are in a rolling state, along with the continuous heating of the air conditioner, when a certain outdoor heat exchanger is subjected to defrosting conditions when the temperature of a pipe reaches, the corresponding wind blocking device motor is started to drive the wind blocking sailcloths 4 to descend, when the wind blocking sailcloths 4 completely block the outdoor heat exchanger needing defrosting, a defrosting channel of the heat exchanger is opened to defrost, when defrosting exits, the heating channel is opened, and meanwhile, the motor 1 drives the wind blocking sailcloths 4 to ascend to an initial state. When the defrosting condition is met when the temperature of the other outdoor heat exchanger reaches, the control is also carried out according to the method.
Example 3: a computer readable storage medium.
A computer-readable storage medium storing a computer program that implements the air conditioner defrost control method of embodiment 2 when invoked by a processor.
Example 4: an air conditioner.
The air conditioner comprises an outer unit, wherein two outer fans are arranged in the outer unit, and the outer fans are provided with the air conditioner defrosting control device in embodiment 1.
The above description is only for the preferred embodiment of the present invention, but the present invention should not be limited to the embodiment and the disclosure of the drawings, and therefore, all equivalent or modifications that do not depart from the spirit of the present invention are intended to fall within the scope of the present invention.
Claims (9)
1. The air conditioner defrosting control device is characterized by comprising two air plugging devices, wherein the two air plugging devices are respectively arranged on two outer fans of an air conditioner external unit, and the air plugging devices are used for plugging an outdoor heat exchanger in an external defrosting period.
2. The air conditioner defrost control apparatus of claim 1, wherein: the wind blocking device comprises a motor, a rolling shaft and a canvas, wherein the motor drives the rolling shaft to rotate, and the rolling shaft drives the canvas to descend or ascend.
3. The air conditioner defrost control apparatus of claim 2, wherein: the wind blocking device further comprises guide rails and guide blocks, the guide rails are arranged on two sides below the rolling shaft, the guide blocks are arranged at the bottoms of the canvases, and the guide blocks can slide in the guide rails.
4. The air conditioner defrost control apparatus of claim 1, wherein: and a water receiving tray is arranged below the wind blocking device.
5. An air conditioner defrosting control method is characterized in that: the defrosting control device for the air conditioner according to any one of claims 1 to 4, when it is detected that the temperature of the tube of the outdoor heat exchanger reaches a defrosting condition, controls the air blocking device to block the outdoor heat exchanger entirely.
6. The defrosting control method of an air conditioner according to claim 5, wherein: when the temperature of the outdoor heat exchanger tube is detected to be within the normal working range, the defrosting is judged to be finished, and the air blocking device is controlled to restore to the original state, namely the outdoor heat exchanger is not blocked.
7. The defrosting control method of an air conditioner according to claim 6, wherein: the control air blocking device is used for completely blocking the outdoor heat exchanger and specifically comprises the following steps: and theoretically calculating to obtain the theoretical running time of the outdoor heat exchanger blocked by the air blocking device, and adding Y seconds on the theoretical running time as an actual running time set value, wherein Y is the set value.
8. A computer-readable storage medium storing a computer program, characterized in that: the computer program, when invoked by a processor, implements the air conditioner defrost control method of any of claims 5-7.
9. An air conditioner, comprising an outer unit, wherein two outer fans are arranged in the outer unit, and characterized in that the outer fans are respectively provided with the air conditioner defrosting control device as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984734.0A CN110887169A (en) | 2019-10-16 | 2019-10-16 | Air conditioner defrosting control method and device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984734.0A CN110887169A (en) | 2019-10-16 | 2019-10-16 | Air conditioner defrosting control method and device and air conditioner |
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| CN110887169A true CN110887169A (en) | 2020-03-17 |
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| CN201910984734.0A Pending CN110887169A (en) | 2019-10-16 | 2019-10-16 | Air conditioner defrosting control method and device and air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357713A (en) * | 2021-07-06 | 2021-09-07 | 珠海格力电器股份有限公司 | Heat exchange equipment and control method thereof |
| CN116045382A (en) * | 2022-12-20 | 2023-05-02 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and electrostatic dust collection method thereof |
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2019
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| CN116045382A (en) * | 2022-12-20 | 2023-05-02 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and electrostatic dust collection method thereof |
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Application publication date: 20200317 |