CN112432309B - Air conditioner and air conditioner control method - Google Patents
Air conditioner and air conditioner control method Download PDFInfo
- Publication number
- CN112432309B CN112432309B CN202011349777.0A CN202011349777A CN112432309B CN 112432309 B CN112432309 B CN 112432309B CN 202011349777 A CN202011349777 A CN 202011349777A CN 112432309 B CN112432309 B CN 112432309B
- Authority
- CN
- China
- Prior art keywords
- temperature
- current temperature
- air conditioner
- controlling
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010257 thawing Methods 0.000 claims abstract description 47
- 238000009826 distribution Methods 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000004378 air conditioning Methods 0.000 claims abstract description 6
- 239000003507 refrigerant Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000013589 supplement Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003860 storage Methods 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
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioning, and discloses an air conditioner and an air conditioner control method. Wherein the air conditioner control method is applied to a defrost mode. The air conditioner control method comprises the following steps: acquiring a first temperature, wherein the first temperature is the current temperature of the outdoor heat exchanger; the method comprises the steps of acquiring the distribution range of a current temperature threshold in real time, and controlling an outer fan to be started when a first temperature is within the distribution range of the current temperature threshold; or, the current temperature threshold value is obtained in real time, and when the first temperature is smaller than or equal to the current temperature threshold value, the outer fan is controlled to be started. Therefore, the air conditioner control method provided by the embodiment of the invention fully utilizes the air heat to defrost by controlling the opening of the external fan, so that the melting of a frost layer is accelerated, and the defrosting rate can be increased by 30%.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioner and an air conditioner control method.
Background
In the region of high humidity microthermal, the air conditioner heats often and can make the outer machine of air conditioner seriously frost, and the air conditioner defrosting will make the temperature drop in the room too big, causes user experience not good, so it melts to accelerate the frost layer, reduces indoor temperature and falls to the heating travelling comfort that improves the air conditioner especially important. And for the environment with the temperature above 0 ℃, the air temperature is still higher than the triple point of water, and the air heat source can also be used for defrosting. And the outer fan is started in the defrosting process of the air conditioner, so that the heat dissipation of the refrigerant can be caused, and the defrosting time is prolonged.
In the prior art, a small air compressor is added on the basis of an original air source heat pump. When frosting, hot air flow is sprayed to the surface of the glass, and defrosting is carried out through the hot air flow. In the prior art, parts such as an air compressor, a stop valve and the like are additionally added, so that the manufacturing cost is increased; and the air current blows from the upper part to the lower part of the fin, the hot air current conveying distance is long, the hot air current speed and the heat loss are large, the defrosting air speed and the heat obtained at the lower part of the fin are insufficient, the defrosting heat is uneven, and the defrosting time is prolonged.
Disclosure of Invention
The invention provides an air conditioner and an air conditioner control method, aiming at solving the technical problem of controlling the starting time of an external fan.
In a first aspect, the present invention provides an air conditioner control method, applied to a defrost mode,
acquiring a first temperature, wherein the first temperature is the current temperature of the outdoor heat exchanger;
the distribution range of the current temperature threshold value is obtained in real time,
when the first temperature is within the distribution range of the current temperature threshold value, controlling an outer fan to be started; or the like, or, alternatively,
the current temperature threshold value is obtained in real time,
and when the first temperature is less than or equal to the current temperature threshold value, controlling the external fan to be started.
Optionally, the current temperature threshold is dynamically variable with a current temperature of the outdoor environment.
Optionally, the current temperature threshold is linearly varied with a current temperature of the outdoor environment.
Optionally, the current temperature threshold is a product of a fourth temperature and a thermal conductivity parameter; the fourth temperature is the current temperature of the outdoor environment, and the heat conduction parameter is calculated by the convective heat transfer of the refrigerant, the heat transfer of the copper pipe, the heat transfer of the frost and the convective heat transfer of the air.
Optionally, a second temperature and a third temperature are obtained, wherein the second temperature is a current temperature of the indoor heat exchanger, and the third temperature is a current temperature of an indoor environment;
and when the second temperature is higher than the third temperature, controlling the inner fan to be started.
Optionally, when the second temperature is higher than the third temperature, controlling the internal fan to be turned on further includes: and controlling the internal electromechanical auxiliary heating to be started.
Optionally, the controlling the internal fan to turn on includes:
when the second temperature is higher than the third temperature and lower than a preset first temperature threshold value, controlling the inner fan to rotate at a first rotating speed;
when the second temperature is higher than the preset first temperature threshold and is lower than the preset second temperature threshold, controlling the inner fan to rotate at a second rotating speed;
and when the second temperature is higher than the preset second temperature threshold value, controlling the inner fan to rotate at a third rotating speed.
Optionally, the third rotation speed is greater than the second rotation speed, and the second rotation speed is greater than the first rotation speed.
Optionally, when the first temperature is greater than a preset third temperature threshold, or when a defrosting time length is greater than or equal to a preset defrosting time length; and controlling the inner fan, the outer fan and the inner machine to run according to an initial mode, controlling the opening of the throttle valve to be a preset opening gear, and controlling the opening of the throttle valve to maintain the preset opening duration.
In a second aspect, the present invention provides an air conditioner using the above-described air conditioner control method when in a defrost mode.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
the air conditioner control method provided by the embodiment of the invention is applied to a defrosting mode, and a first temperature is obtained and is the current temperature of an outdoor heat exchanger; acquiring the distribution range of the current temperature threshold in real time; when the first temperature is within the distribution range of the current temperature threshold value, controlling the external fan to be started; or, acquiring the current temperature threshold in real time; and when the first temperature is less than or equal to the current temperature threshold value, controlling the external fan to be started. Therefore, by controlling the starting time of the outer fan, the air heat can be fully utilized for defrosting, the melting of a frost layer is accelerated, and the effect of improving the defrosting rate by 30 percent is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
In the drawings:
fig. 1 is a flowchart of an air conditioner control method according to a first embodiment of the present invention;
fig. 2 is a logic diagram of the internal fan and the internal electric auxiliary heat control provided in the first embodiment of the present invention;
FIG. 3 is a schematic diagram of the hot gas bypass defrost system;
fig. 4 is a flowchart of an air conditioner control method according to a second embodiment of the present invention.
Reference numerals:
10. a compressor; 20. a liquid storage tank; 30. a four-way valve; 40. an indoor heat exchanger; 50. a throttle valve; 60. a bypass valve; 70. an outdoor heat exchanger.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The first embodiment is as follows:
referring to fig. 1 to 3, an air conditioner control method according to an embodiment of the present invention is applied to a defrost mode. The specific implementation mode comprises the following steps:
s100: acquiring a first temperature, wherein the first temperature is the current temperature of the outdoor heat exchanger;
s200: acquiring the distribution range of the current temperature threshold in real time;
s300: and when the first temperature is within the distribution range of the current temperature threshold value, controlling the external fan to be started.
Therefore, for the problem that the defrosting time of the air conditioner is too long, the current temperature of the outdoor heat exchanger is obtained, the distribution range of the current temperature threshold value is obtained in real time, and when the first temperature is in the distribution range of the current temperature threshold value, the outer fan is controlled to be started. Therefore, the air heat source is utilized to defrost, the melting of a frost layer is accelerated, and the defrosting time is shortened.
In particular, the current temperature threshold is dynamically variable with the current temperature of the outdoor environment. Therefore, when the first temperature is in the distribution range of the current temperature threshold, the current temperature threshold is dynamically changed along with the current temperature of the outdoor environment, and the opening of the outer fan is controlled, so that the defrosting time is reduced.
Further, the current temperature threshold is linearly varied with the current temperature of the outdoor environment. Thus, when the first temperature is within the distribution range of the current temperature threshold, the opening of the outer fan is controlled, so that the defrosting time is reduced.
The current temperature of the outdoor environment is a fourth temperature, and the current temperature threshold is a product of the fourth temperature multiplied by the thermal conductivity parameter. The heat conduction parameters are calculated by the heat convection of the refrigerant, the heat conduction of the copper pipe, the heat conduction of the frost and the heat convection of the air. The specific calculation formula of the heat conduction parameter is as follows:
k in the above formula1As a parameter of heat conductivity, hRefrigerantIs a pair of refrigerantsHeat transfer by flow, hAir (a)For the heat convection of the air,
is the heat conduction of the copper tube,
is the heat conduction of the frost.
In the embodiment of the invention, the heat supplement phi for defrosting the frost layer by air is calculated when the external fan is controlled to be started in the defrosting modeHot patchingAnd heat loss phi of refrigerant to airHeat lossWherein phi isHot patching＝AhAir (a)(TAir (a)-TCream)，ΦHeat loss＝Ak1(TOutside heat exchanger-TAir (a))。
"heat replenishment" in the above formula refers to the amount of heat absorbed by the frost layer from the air in the defrost mode; "Heat loss" refers to the heat lost by the refrigerant dissipating heat to the air during defrost mode; a refers to the contact area of the outdoor heat exchanger and the frost layer or the water film, hAir (a)Refers to the heat transfer coefficient, k1Refers to the thermal conductivity parameter. T isAir (a)Is the current temperature, T, of the airCreamRefers to the current temperature of the frost. T isOutside heat exchangerThe current temperature of the outdoor heat exchanger, that is, the current temperature of the refrigerant flowing through the outdoor heat exchanger.
Thus, in defrost mode, when TOutside heat exchanger≤k1*TOutdoor environmentTime phiHeat loss≤ΦHot patchingThe heat dissipation of the refrigerant to the air is smaller than the heat absorption of the frost layer from the air, and the defrosting is facilitated by starting the outer fan at the moment. When T is satisfiedOutside heat exchanger≤k1*TOutdoor environmentThen phi can be realizedHeat loss≤ΦHot patchingAnd controlling the outer fan to be started in the defrosting mode, otherwise, not starting the outer fan. T isOutdoor environmentRefers to the current temperature of the outdoor heat exchanger. k is a radical of1*TOutdoor environmentRefers to the distribution range of the current temperature threshold, where k1Is in the range of 0 to 10.
According to the air conditioner control method provided by the embodiment of the invention, when the reversing defrosting mode is not adopted, the outer fan and the inner fan are simultaneously controlled to be started. When the reversing defrosting mode is adopted, only the outer fan is controlled to be started, and the inner fan is not started.
It is understood that the air conditioner control method provided by the first embodiment of the present invention may be applied to an air conditioner provided with a bypass valve, and may also be applied to an air conditioner without a bypass valve. The opening or closing of the bypass valve may be controlled when the air conditioner is in the defrost mode.
Referring to fig. 2, the air conditioner control method further includes: acquiring a second temperature and a third temperature, wherein the second temperature is the current temperature of the indoor heat exchanger, and the third temperature is the current temperature of the indoor environment; and when the second temperature is higher than the third temperature, controlling the inner fan to be started. Like this, open and control the appropriate rotational speed of interior fan through the fan in the control, air-out temperature is also higher when interior fan is opened for when not influencing the defrosting, continuously give indoor heat supply, the temperature drop when reducing indoor defrosting reaches the purpose of continuously heating.
And further, when the second temperature is higher than the third temperature, the internal electromechanical auxiliary heating is controlled to be started. Generally, the indoor unit of the air conditioner at the middle and high ends is provided with an electric auxiliary heating device, and the electric auxiliary heating device can supplement more heat to the indoor space. Therefore, when the inner fan is controlled to be started, the inner electromechanical auxiliary heating can be controlled to be started. Therefore, the defrosting of the outdoor heat exchanger is not influenced, meanwhile, the indoor heat supply is continued, the temperature drop during indoor defrosting is reduced, and the purpose of continuous heating is achieved. It is worth to be noted that the premise of the internal machine electric auxiliary heating starting is that the internal fan is started.
It should be noted that the inner unit refers to the whole unit placed at the indoor side, and the inner fan refers to a fan in the inner unit, that is, a motor and a fan blade of a fan in the prior art. The outdoor unit refers to the whole unit placed outside the room, and the external fan refers to a fan in the outdoor unit, namely a motor and a fan blade of a fan in the prior art.
The fan opens including in the control: when the second temperature is higher than the third temperature and lower than a preset first temperature threshold value, controlling the inner fan to rotate at a first rotating speed; when the second temperature is higher than the preset first temperature threshold and lower than the preset second temperature threshold, controlling the inner fan to rotate at a second rotating speed; and when the second temperature is higher than a preset second temperature threshold value, controlling the inner fan to rotate at a third rotating speed.
The third rotating speed is greater than the second rotating speed, and the second rotating speed is greater than the first rotating speed. Specifically, the first rotation speed ranges from 0rpm to 1000rpm, and the third rotation speed ranges from 0rpm to 1000rpm, where rpm is a rotation speed unit. The second rotation speed is calculated by the formula r1+Q1*(TInner side heat exchanger-T1) Wherein Q in the formula1The value range of the rotation speed coefficient is 0 to 200; r is1Is referred to as the first rotational speed, T1Refers to a preset first temperature threshold, TInner side heat exchangerRefers to the current temperature of the indoor heat exchanger.
The preset first temperature threshold value ranges from 30 ℃ to 70 ℃, the preset second temperature threshold value ranges from 30 ℃ to 70 ℃, and the preset first temperature threshold value is smaller than the preset second temperature threshold value. The value range of the preset third temperature threshold is 0-20 ℃.
When the first temperature is higher than a preset third temperature threshold value, the inner fan, the outer fan and the inner fan are controlled to run according to an initial mode, the opening of the throttle valve is controlled to be a preset opening gear, and the opening of the throttle valve is controlled to be maintained for a preset opening duration. In a specific embodiment, when the defrosting time is longer than or equal to the preset defrosting time, the inner fan, the outer fan and the inner fan may also be controlled to operate according to an initial mode, the opening of the throttle valve is controlled to be a preset opening gear, and the opening of the throttle valve is controlled to maintain the preset opening time. Therefore, when the defrosting exit condition is met, the inner fan, the inner electric auxiliary heater and the outer fan are controlled to operate according to an initial mode preset by a user. The throttle valve opening is adjusted to preset opening gear from the biggest, and it is long when maintaining preset opening, then adjusts according to the mode operation that heats, can improve the refrigerant heat like this, avoids throttle valve opening undersize to lead to the problem that frosting is too fast after the defrosting simultaneously.
Referring to fig. 3, a first embodiment of the present invention further provides an air conditioner, and an air conditioner control method is used when the air conditioner is in a defrosting mode.
The air conditioner includes a compressor 10, an indoor heat exchanger 40, a throttle valve 50, and an outdoor heat exchanger 70 connected to form a main refrigerant circuit. The air conditioner further includes an outer fan (not shown) for driving the outdoor air flow to flow, and the outer fan is configured to be turned on when the first temperature is within a distribution range of the current temperature threshold in the defrosting mode. Throttle valve 50 may alternatively be an electronic expansion valve. In order to accelerate defrosting, the external fan is started, air heat can be fully utilized to defrost, melting of a frost layer is accelerated, and the defrosting speed can be improved by 30%.
The first temperature is the current temperature of the outdoor heat exchanger, and the distribution range of the current temperature threshold is the distribution range of the current temperature threshold obtained in real time.
In one embodiment, the air conditioner further includes an inner fan (not shown) for driving the indoor airflow to flow, and the inner fan is configured to be turned on when the second temperature is greater than the third temperature. The second temperature is a current temperature of the indoor heat exchanger, and the third temperature is a current temperature of the indoor environment. The inner fan is started, so that heat supply for the indoor is continuously performed while defrosting is not influenced, and indoor temperature drop during defrosting is reduced.
Further, the air conditioner further comprises internal electromechanical auxiliary heat, the internal electromechanical auxiliary heat is used for providing heat for the indoor air, and the internal electromechanical auxiliary heat is configured to be turned on when the second temperature is higher than the third temperature. The internal machine is electrically assisted with heat and is opened, so that enough heat can be supplied to indoor air in the defrosting process, and the excessive indoor temperature drop is avoided. Of course, when the internal electromechanical auxiliary heating is not started, the air outlet temperature of the internal fan is also higher, and the purpose of starting the internal electromechanical auxiliary heating is only to supplement more heat for indoor air. However, the precondition for starting the internal electromechanical auxiliary heating is that the internal fan is started.
The air conditioner further includes a reservoir 20, a bypass valve 60, and a four-way valve 30. The bypass valve 60 may form a bypass loop to speed defrosting. The four-way valve 30 can switch the flow direction of the refrigerant.
Example two:
referring to fig. 4, a control method of an air conditioner according to a second embodiment of the present invention is applied to a defrosting mode. The difference between the second embodiment and the first embodiment is that the current temperature threshold is obtained in real time, and when the first temperature is less than or equal to the current temperature threshold, the external fan is controlled to be started. The specific implementation mode comprises the following steps:
s110: acquiring a first temperature, wherein the first temperature is the current temperature of the outdoor heat exchanger;
s120: acquiring a current temperature threshold in real time;
s130: and when the first temperature is less than or equal to the current temperature threshold value, controlling the external fan to be started.
Therefore, for the problem that the defrosting time of the air conditioner is too long, the current temperature of the outdoor heat exchanger is obtained, the current temperature threshold value is obtained in real time, and when the first temperature is smaller than or equal to the current temperature threshold value, the outer fan is controlled to be started. Therefore, the air heat source is utilized to defrost, the melting of a frost layer is accelerated, and the defrosting time is shortened.
The current temperature threshold is calculated by the product of the current temperature of the outdoor environment and the heat conduction parameter, the value range of the heat conduction parameter is 0 to 10, and the specific value of the heat conduction parameter can be preset and stored or manually input through user setting. The outdoor ambient temperature is a variable that changes with the season or day and night. Therefore, the current temperature threshold is obtained in real time, that is, the current temperature of the outdoor environment can be obtained in real time, and then the current temperature of the outdoor environment is multiplied by the heat conduction parameter to obtain the current temperature threshold. And then comparing the current temperature threshold value obtained in real time with the current temperature of the outdoor heat exchanger, thereby realizing the control of the opening of the outer fan.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (9)
1. An air conditioner control method is applied to a defrosting mode and is characterized in that,
acquiring a first temperature, wherein the first temperature is the current temperature of the outdoor heat exchanger;
the distribution range of the current temperature threshold value is obtained in real time,
when the first temperature is within the distribution range of the current temperature threshold value, the air supplements the heat of frost melting of the frost layer to be larger than or equal to the heat loss of the refrigerant to the air, and the external fan is controlled to be started; or the like, or, alternatively,
the current temperature threshold value is obtained in real time,
when the first temperature is lower than or equal to the current temperature threshold, the air supplements the heat of frost melting of the frost layer to be larger than or equal to the heat loss of the refrigerant to the air for heat dissipation, and the external fan is controlled to be started;
the current temperature threshold is the product of a fourth temperature and a heat conduction parameter; the fourth temperature is the current temperature of the outdoor environment, and the heat conduction parameter is calculated by the convective heat transfer of a refrigerant, the heat transfer of a copper pipe, the heat transfer of frost and the convective heat transfer of air; wherein the value range of the heat conduction parameter is 0 to 10.
2. The air conditioning control method according to claim 1, wherein the current temperature threshold value is dynamically varied with a current temperature of the outdoor environment.
3. The air conditioning control method according to claim 1, wherein the current temperature threshold value is linearly varied with a current temperature of the outdoor environment.
4. The air conditioner controlling method according to any one of claims 1 to 3,
acquiring a second temperature and a third temperature, wherein the second temperature is the current temperature of the indoor heat exchanger, and the third temperature is the current temperature of the indoor environment;
and when the second temperature is higher than the third temperature, controlling the inner fan to be started.
5. The air conditioner control method according to claim 4, wherein when the second temperature is higher than the third temperature, controlling the internal fan to be turned on further comprises: and controlling the internal electromechanical auxiliary heating to be started.
6. The air conditioner control method according to claim 4, wherein the controlling of the opening of the inner fan includes:
when the second temperature is higher than the third temperature and lower than a preset first temperature threshold value, controlling the inner fan to rotate at a first rotating speed;
when the second temperature is higher than the preset first temperature threshold and is lower than the preset second temperature threshold, controlling the inner fan to rotate at a second rotating speed;
and when the second temperature is higher than the preset second temperature threshold value, controlling the inner fan to rotate at a third rotating speed.
7. The air conditioning control method according to claim 6, wherein the third rotation speed is greater than the second rotation speed, and the second rotation speed is greater than the first rotation speed.
8. The air conditioner control method according to claim 1, wherein when the first temperature is greater than a preset third temperature threshold, or when a defrosting time period is greater than or equal to a preset defrosting time period; and controlling the inner fan, the outer fan and the inner machine to run according to an initial mode, controlling the opening of the throttle valve to be a preset opening gear, and controlling the opening of the throttle valve to maintain the preset opening duration.
9. An air conditioner characterized by using the air conditioning control method of any one of claims 1 to 8 when in a defrosting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349777.0A CN112432309B (en) | 2020-11-26 | 2020-11-26 | Air conditioner and air conditioner control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349777.0A CN112432309B (en) | 2020-11-26 | 2020-11-26 | Air conditioner and air conditioner control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112432309A CN112432309A (en) | 2021-03-02 |
| CN112432309B true CN112432309B (en) | 2022-03-18 |
Family
ID=74698910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011349777.0A Active CN112432309B (en) | 2020-11-26 | 2020-11-26 | Air conditioner and air conditioner control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112432309B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551372A (en) * | 2021-07-12 | 2021-10-26 | 广东Tcl智能暖通设备有限公司 | Air conditioner self-cleaning method and device, air conditioner and storage medium |
| CN114061031A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
| CN114061033B (en) * | 2021-11-03 | 2023-08-18 | 青岛海尔空调器有限总公司 | Method and device for defrosting air conditioner, air conditioner and storage medium |
| CN114110929A (en) * | 2021-11-12 | 2022-03-01 | 珠海格力电器股份有限公司 | Defrosting control method of air conditioner and air conditioner using same |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278551A (en) * | 2006-04-04 | 2007-10-25 | Matsushita Electric Ind Co Ltd | Defrosting operation method of heat pump water heater |
| JP2013231564A (en) * | 2012-05-01 | 2013-11-14 | Daikin Industries Ltd | Air conditioning system and defrosting operation method |
| CN103868296A (en) * | 2014-04-01 | 2014-06-18 | 深圳麦克维尔空调有限公司 | Method for defrosting air conditioning unit and air conditioning unit |
| CN105972772A (en) * | 2016-05-30 | 2016-09-28 | 广东美的制冷设备有限公司 | Defrosting control method and device for air conditioner |
| CN107143978A (en) * | 2017-05-17 | 2017-09-08 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method and device |
| CN107152819A (en) * | 2017-06-06 | 2017-09-12 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
| JP2017207243A (en) * | 2016-05-19 | 2017-11-24 | シャープ株式会社 | Defrost control device and air conditioner |
| CN108072188A (en) * | 2017-10-30 | 2018-05-25 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
| CN111503824A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN111780348A (en) * | 2020-06-23 | 2020-10-16 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting method, defrosting control device and air conditioner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205935A (en) * | 1997-01-18 | 1998-08-04 | Matsushita Electric Ind Co Ltd | Defrosting controller and air conditioner employing the same |
| JPH1194329A (en) * | 1997-06-27 | 1999-04-09 | Samsung Electron Co Ltd | Defrosting device of air conditioner and control method therefor |
| JP2002005491A (en) * | 2000-06-20 | 2002-01-09 | Fujitsu General Ltd | Control method for air-conditioner |
| CN100541035C (en) * | 2005-08-22 | 2009-09-16 | 乐金电子(天津)电器有限公司 | The outdoor machine defrosting device of air-conditioner and control method thereof |
| US9341405B2 (en) * | 2012-11-30 | 2016-05-17 | Lennox Industries Inc. | Defrost control using fan data |
| CN103471203B (en) * | 2013-08-29 | 2016-04-06 | 广东美的制冷设备有限公司 | The defrosting control method of air-conditioner and air-conditioner system |
| CN104596032B (en) * | 2014-12-31 | 2017-08-29 | 广东美的制冷设备有限公司 | Air conditioner and its defrosting control method |
| CN106765778B (en) * | 2017-01-10 | 2019-09-27 | 美的集团武汉制冷设备有限公司 | The defrosting control method of air conditioner and air conditioner |
-
2020
- 2020-11-26 CN CN202011349777.0A patent/CN112432309B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278551A (en) * | 2006-04-04 | 2007-10-25 | Matsushita Electric Ind Co Ltd | Defrosting operation method of heat pump water heater |
| JP2013231564A (en) * | 2012-05-01 | 2013-11-14 | Daikin Industries Ltd | Air conditioning system and defrosting operation method |
| CN103868296A (en) * | 2014-04-01 | 2014-06-18 | 深圳麦克维尔空调有限公司 | Method for defrosting air conditioning unit and air conditioning unit |
| JP2017207243A (en) * | 2016-05-19 | 2017-11-24 | シャープ株式会社 | Defrost control device and air conditioner |
| CN105972772A (en) * | 2016-05-30 | 2016-09-28 | 广东美的制冷设备有限公司 | Defrosting control method and device for air conditioner |
| CN107143978A (en) * | 2017-05-17 | 2017-09-08 | 广东美的暖通设备有限公司 | Air-conditioning system and its blower control method and device |
| CN107152819A (en) * | 2017-06-06 | 2017-09-12 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
| CN108072188A (en) * | 2017-10-30 | 2018-05-25 | 青岛海尔空调器有限总公司 | Air-conditioning device and its control method |
| CN111503824A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN111780348A (en) * | 2020-06-23 | 2020-10-16 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting method, defrosting control device and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112432309A (en) | 2021-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112432309B (en) | Air conditioner and air conditioner control method | |
| CN105605742B (en) | The clean method of heat exchanger of air conditioner | |
| WO2021083067A1 (en) | Thermal management system | |
| US10180277B2 (en) | Vehicle air conditioner | |
| US11897316B2 (en) | Refrigeration cycle device | |
| CN105276895B (en) | A kind of wind cooling refrigerator | |
| TWI666135B (en) | Vehicle battery temperature regulation system | |
| JP6488994B2 (en) | Vehicle heat transfer circuit | |
| US10207564B2 (en) | Vehicle air conditioner | |
| CN109378550B (en) | Automobile air conditioner and new energy automobile | |
| JP5971202B2 (en) | Refrigeration cycle equipment | |
| CN111032386B (en) | Air conditioner for vehicle | |
| CN107763874A (en) | The self cleaning method and air conditioner of heat exchanger of air conditioner | |
| WO2021221152A1 (en) | Method for controlling air conditioning system | |
| CN107531132B (en) | Anti-fog device for vehicle | |
| CN110887303A (en) | Refrigerator with air conditioning and humidifying device | |
| JP6493486B1 (en) | Air conditioner | |
| JP2003159931A (en) | Air conditioner for vehicle | |
| CN209744561U (en) | Indoor unit capable of continuously heating and air conditioner | |
| CN110254165B (en) | Heat pump and battery liquid cooling system | |
| CN113879067A (en) | Refrigerant flow distribution control method of integrated battery cooler automobile air conditioning system | |
| JP3482782B2 (en) | Brine air conditioner | |
| KR20190046058A (en) | Airconditioning apparatus for electric vehicle | |
| CN110736142B (en) | Air conditioner and rapid dehumidification control method without cooling | |
| JPS6015217A (en) | Air conditioner for vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |