CN115682283B - Anti-condensation control method and device for air conditioner, air conditioner and medium - Google Patents

Anti-condensation control method and device for air conditioner, air conditioner and medium Download PDF

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CN115682283B
CN115682283B CN202211339476.9A CN202211339476A CN115682283B CN 115682283 B CN115682283 B CN 115682283B CN 202211339476 A CN202211339476 A CN 202211339476A CN 115682283 B CN115682283 B CN 115682283B
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temperature
mode
unit
electronic expansion
expansion valve
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CN115682283A (en
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沈炜轩
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

The invention discloses an anti-condensation control method and device for an air conditioner, the air conditioner and a medium, wherein the method comprises the following steps: acquiring an operation mode of a unit; if the operation mode of the unit is a heating mode, adjusting the opening of the first electronic expansion valve in a throttling mode, and controlling the opening of the second electronic expansion valve to be fully opened; if the running mode of the unit is a refrigeration mode or a dehumidification mode, controlling the opening of the first electronic expansion valve to be fully opened, regulating the opening of the second electronic expansion valve in a throttling mode, and controlling the rotating speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity. According to the invention, the electronic expansion valves are arranged on two sides of the radiating pipe, so that the refrigerant passes through the radiating pipe and is throttled, the problem of condensation of the main board caused by the fact that the temperature of the refrigerant is too low after throttling is solved, meanwhile, the rotating speed of the outer fan is controlled according to the fact that the temperature of the outer ring is in different temperature intervals during refrigeration, the temperature of the refrigerant in the radiating pipe is controlled at a proper level, and the problems of reduced refrigeration capacity and the like caused by condensation prevention improvement are avoided.

Description

Anti-condensation control method and device for air conditioner, air conditioner and medium
Technical Field
The invention relates to the technical field of air conditioner anti-condensation, in particular to an air conditioner anti-condensation control method, an air conditioner anti-condensation control device, an air conditioner and a medium.
Background
According to the requirement of the communication base station on the air conditioner, the compressor and related components are arranged on the indoor side, and only the condenser and the pipe fittings thereof are reserved on the outdoor side, so that the temperature rise of the internal machine control module is larger, and the temperature rise problem is solved by adopting a mode of cooling the main board module by a refrigerant. As shown in fig. 4 of the specification, a cooling tube is additionally arranged between a condenser and a throttling device (an electronic expansion valve) in the conventional system, the cooling tube is attached to a main board module, and after the refrigerant is condensed in an external machine, the refrigerant exchanges heat with the main board module through the cooling tube and then enters the electronic expansion valve for throttling. The design can well realize the purpose of heat dissipation under most conditions, but under a heating mode or a few extreme conditions of a refrigerating mode, such as low outdoor environment temperature, high indoor temperature and high humidity, the temperature of the refrigerant in the radiating pipe is low, so that the main board is excessively cooled, the surface temperature is lower than the dew point temperature of the indoor environment, condensation is generated on the surface of the main board, and the problems of short circuit and the like are easily caused.
In the heating mode of the existing system, the refrigerant enters the radiating pipe for radiating after being throttled by the electronic expansion valve, and the temperature of the throttled refrigerant is too low. When the air conditioner is in cold operation, the indoor humidity is reduced to a lower level after the air conditioner is operated for a certain period of time, so that the possibility of condensation is low, and the refrigerating capacity of the air conditioner is unnecessarily sacrificed if the rotating speed of the external fan is reduced by using the same control logic.
Disclosure of Invention
The invention aims to overcome the problems of condensation generated by cooling a main board by a refrigerant, the problem of reduced refrigerating capacity of an air conditioner caused by condensation prevention after improvement, system disorder caused by wind shift switching in an condensation prevention control method, excessive pressure and the like in the prior art, and provides an air conditioner condensation prevention control method, an air conditioner device, an air conditioner and a medium.
The technical scheme adopted for solving the technical problems is as follows: the control system comprises a first electronic expansion valve arranged between a refrigerant radiating pipe and an outdoor unit, and a second electronic expansion valve arranged between the refrigerant radiating pipe and an indoor unit, wherein the control method specifically comprises the following steps:
acquiring an operation mode of a unit, wherein the operation mode comprises a heating mode, a refrigerating mode and a dehumidifying mode;
If the operation mode of the unit is a heating mode, adjusting the opening of the first electronic expansion valve in a throttling mode, and controlling the opening of the second electronic expansion valve to be fully opened;
If the running mode of the unit is a refrigeration mode or a dehumidification mode, controlling the opening of the first electronic expansion valve to be fully opened, regulating the opening of the second electronic expansion valve in a throttling mode, and controlling the rotating speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity.
As a further improvement of the invention: and controlling the rotating speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity, wherein the rotating speed control comprises the following steps:
if the outdoor environment temperature is less than or equal to the sum of a preset temperature value and a temperature interval point correction value, controlling the unit to enter a condensation-preventing external fan rotating speed control mode;
the temperature interval point correction value is determined according to the indoor environment temperature value and the indoor environment relative humidity.
As a further improvement of the invention: the anti-condensation external fan rotating speed control mode comprises the following steps:
acquiring outdoor environment temperature, indoor environment temperature value and indoor environment relative humidity in real time;
Updating and determining interval point values of different preset temperature intervals according to the sum of the preset temperature initial interval point and the temperature interval point correction value;
controlling the rotating speed of the external fan according to the rotating speeds of the fans corresponding to different preset temperature intervals of the outdoor environment temperature;
And different preset initial temperature intervals are preset in a controller of the unit.
As a further improvement of the invention: the fan rotating speeds corresponding to different preset temperature intervals according to the outdoor environment temperature are controlled, and the rotating speed of the outer fan comprises the following steps:
When the outdoor environment temperature is greater than or equal to a minimum interval point T N of a preset temperature interval and less than a maximum interval point T N+1 of the preset temperature interval, the rotating speed calculation formula of the external fan is as follows:
wherein T Outer ring is the outdoor ambient temperature, SN+1 is the preset fan speed corresponding to the maximum interval point T N+1 of the preset temperature interval, and S N is the preset fan speed corresponding to the minimum interval point T N of the preset temperature interval.
As a further improvement of the invention: the anti-condensation external fan rotating speed control mode further comprises the following steps:
and if the surface temperature of the copper tube of the heat exchanger of the outdoor unit is larger than the preset high-load copper tube temperature threshold value of the heat exchanger in the refrigerating mode of the unit, controlling the unit to exit the anti-condensation external fan rotating speed control mode.
As a further improvement of the invention: and the temperature interval point correction value is the difference value between the dew point temperature of the unit under different indoor environment temperatures and indoor environment relative humidity and the dew point temperature of the unit under a reference state.
The invention also provides an anti-condensation control device of the air conditioner, which comprises:
the acquisition module is used for acquiring the outdoor environment temperature;
The judging module is used for judging the running mode of the unit, judging whether the outdoor environment temperature is smaller than or equal to the sum of a preset temperature value and a temperature interval point correction value, judging that the outdoor environment temperature is in different preset temperature intervals, and judging whether the surface temperature of the copper tube of the heat exchanger of the outdoor unit is larger than a preset high-load copper tube temperature threshold value in the refrigerating mode of the unit;
The control module is used for judging the judging result of the judging module, controlling the opening degrees of the first electronic expansion valve and the second electronic expansion valve and controlling the rotating speed of the external fan;
The storage module is used for storing preset external fan rotating speeds corresponding to different preset temperature intervals.
The invention also provides an air conditioner, which uses the anti-condensation control method of the air conditioner, and the anti-condensation control method comprises an outdoor unit heat exchanger arranged outdoors, an indoor unit heat exchanger arranged indoors and a compressor, wherein a refrigerant radiating pipe is arranged between the outdoor unit and the indoor unit, a first electronic expansion valve is arranged between the refrigerant radiating pipe and the outdoor unit, and a second electronic expansion valve is arranged between the refrigerant radiating pipe and the indoor unit.
As a further improvement of the invention: when the air conditioner operates in a heating mode, the opening of the first electronic expansion valve is adjusted in a throttling mode, the opening of the second electronic expansion valve is fully opened, and when the air conditioner operates in a refrigerating mode or a dehumidifying mode, the opening of the first electronic expansion valve is fully opened, and the opening of the second electronic expansion valve is adjusted in the throttling mode.
The present invention also provides a computer storage medium storing a computer program, which when executed, enables to implement an air conditioner anti-condensation control method as described above.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the electronic expansion valves are arranged on the two sides of the cooling medium radiating pipe, so that the cooling medium firstly passes through the radiating pipe and then is throttled, and the problem of condensation of the main board caused by too low temperature of the throttled cooling medium is solved.
2. In the refrigeration mode or the dehumidification mode, the rotating speed of the external fan is controlled according to the fact that the outdoor environment temperature is in different temperature intervals, and the temperature interval points in different temperature intervals are corrected according to the actual indoor environment temperature and the indoor environment relative humidity, so that intelligent control is realized, the temperature of the refrigerant in the radiating pipe is controlled at a proper level, the problem of condensation of a main board is solved, and meanwhile, the problems of refrigeration capacity reduction and the like caused by improvement of condensation prevention are avoided.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
FIG. 2 is a schematic view of the anti-condensation control according to the present invention.
FIG. 3 is a schematic diagram of an anti-condensation control system according to the present invention.
Fig. 4 is a schematic diagram of a conventional condensation prevention system according to the background art.
Reference numerals: 1. the outdoor side, 2, the outdoor unit heat exchanger, 3, the indoor side, 4, the cross valve, 5, the storage tank, 6, the compressor, 7, the indoor unit heat exchanger, 8, the second electronic expansion valve B,9, the refrigerant cooling tube, 10, the first electronic expansion valve A,11 third electronic expansion valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the technical problems in the prior art, the present invention will be further described with reference to the accompanying drawings and examples:
As shown in fig. 1-3, the invention discloses an anti-condensation control method for an air conditioner, which is applied to an anti-condensation control system for the air conditioner, wherein the control system comprises a first electronic expansion valve a10 arranged between a refrigerant radiating pipe 9 and an outdoor unit 2, and a second electronic expansion valve B8 arranged between the refrigerant radiating pipe 9 and an indoor unit 7, and the control method specifically comprises the following steps:
s1: acquiring an operation mode of a unit, wherein the operation mode comprises a heating mode, a refrigerating mode and a dehumidifying mode;
S21: if the operation mode of the unit is a heating mode, the opening of the first electronic expansion valve A10 is regulated in a throttling mode, and the opening of the second electronic expansion valve B8 is controlled to be fully opened;
In the heating mode, the second electronic expansion valve B8 is fully opened, and the second electronic expansion valve B is close to a common pipeline, and the throttling function is completed by the first electronic expansion valve A10.
S22: if the operation mode of the unit is a refrigeration mode or a dehumidification mode, the opening of the first electronic expansion valve A10 is controlled to be fully opened, the opening of the second electronic expansion valve B8 is regulated in a throttling mode, and the rotating speed of the external fan is controlled according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity.
Similarly, in the refrigeration mode or the dehumidification mode, the first electronic expansion valve A is fully opened, no throttling effect exists, and the throttling function is completed by the second electronic expansion valve B.
It should be noted that, the throttling mode performed by the first electronic expansion valve a or the second electronic expansion valve B is a prior art, but should not be considered as a prior art for setting and controlling two electronic expansion valves in the heating mode, the cooling mode or the dehumidifying mode according to the present application.
According to the invention, the electronic expansion valves are arranged on the two sides of the refrigerant radiating pipe, and the refrigerant is throttled after passing through the refrigerant radiating pipe by controlling the two electronic expansion valves, so that the problem of main board condensation caused by low temperature of the throttled refrigerant in a heating mode is solved.
The invention also aims to solve the problems that the refrigerating capacity of the air conditioner is possibly reduced due to the improvement of the main board condensation by adding two electronic expansion valves, and the problems of system disorder and over-high pressure caused by wind shift switching in the condensation prevention control method, and the rotating speed of the external fan is linearly controlled according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity.
As a preferred embodiment of the present invention, in step S22, the controlling the rotation speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity further includes:
S221: if the outdoor environment temperature is less than or equal to the sum of a preset temperature value and a temperature interval point correction value, controlling the unit to enter a condensation-preventing external fan rotating speed control mode;
the temperature interval point correction value is determined according to the indoor environment temperature value and the indoor environment relative humidity.
That is, in the refrigerating or dehumidifying mode of the air conditioner, after the condensation preventing operation is completed, whether the unit needs to enter the condensation preventing external fan rotating speed control mode is judged.
For example, if the outdoor ambient temperature T Outer ring is less than or equal to 22°c+delta T, the anti-condensation external fan speed control mode is entered. Wherein, delta T is a temperature interval point correction value and is a function of the indoor environment temperature T Inner ring and the indoor environment relative humidity phi Inner ring .
Specifically, the anti-condensation external fan rotating speed control mode comprises the following steps:
S222: acquiring outdoor environment temperature, indoor environment temperature value and indoor environment relative humidity in real time;
s223: determining a temperature interval point correction value delta T according to the acquired indoor environment temperature value and the indoor environment relative humidity;
Illustratively, the determination of the temperature interval point correction ΔT is shown in Table 1 below:
TABLE 1
The delta T may be equal to the dew point temperature difference. For example, as can be seen from table 1, the indoor environment temperature T Inner ring is 36 ℃, the indoor environment relative humidity Φ Inner ring is 50%, the operating dew point temperature is 24 ℃, and the dew point temperature is used as a reference point; the indoor environment temperature T Inner ring is 32 ℃, the indoor environment relative humidity phi Inner ring is 50%, the dew point temperature is 20 ℃, the difference between the dew point temperature and the reference point is-4 ℃, and the working condition delta T is-4 ℃.
Preferably, the temperature interval point correction value delta T is the difference value between the dew point temperature of the unit under different indoor environment temperatures T Inner ring and indoor environment relative humidity phi Inner ring and the dew point temperature of the unit under a reference state.
S224: updating and determining interval point values of different preset initial temperature intervals according to the sum of a preset temperature initial interval point T Initial initiation and a temperature interval point correction value delta T;
For example, in the actual running process of the unit, temperature interval points of different preset temperature intervals are shown in the following table 2, that is, the actual temperature interval point needs to be added with delta T, that is, T N=T Initial initiation +' delta T.
Temperature initial interval point Setting value Unit (B) External fan rotating speed interval point Setting value Unit (B)
T Initial initiation A 0 SA 200 rpm
T Initial initiation B 10 SB 300 rpm
T Initial initiation C 14 SC 350 rpm
T Initial initiation D 18 SD 500 rpm
T Initial initiation E 22 SE 650 rpm
TABLE 2
S225: controlling the rotating speed of the external fan according to the rotating speeds of the fans corresponding to different preset temperature intervals of the outdoor environment temperature;
And different preset initial temperature intervals are preset in a controller of the unit.
According to outdoor side temperature in advance, divide a plurality of preset temperature intervals, through reducing the rotational speed of outer fan, control the refrigerant temperature in the cooling tube at suitable level, solve the condensation problem that produces because of the refrigerant cooling.
Meanwhile, through linear control of the rotating speed of the external fan and addition of a temperature interval point correction value coefficient calculated according to the indoor temperature and humidity in a control logic, the air conditioner achieves the purpose of condensation prevention at the minimum cost in different temperature and humidity combination intervals, and therefore the problem of air conditioner refrigerating capacity reduction caused by condensation prevention is solved. The linear control also avoids system disturbances due to wind gear switching back and forth.
As a preferred embodiment of the present invention, in step S225, the controlling the rotational speed of the external fan according to the rotational speeds of the fans corresponding to the outdoor environmental temperature being in different preset temperature ranges includes:
When the outdoor environment temperature trellises is greater than or equal to a minimum interval point TN of a preset temperature interval and is less than a maximum interval point TN+1 of the preset temperature interval, the rotating speed calculation formula of the outer fan is as follows:
Wherein S N+1 is a preset fan speed corresponding to a maximum interval point T N+1 of the preset temperature interval, and S N is a preset fan speed corresponding to a minimum interval point T N of the preset temperature interval.
For example, if the "anti-condensation external fan speed control" mode is entered, the external fan operation speed S outer fan rotational speed is calculated according to the interval to which the detection T Outer ring belongs, as shown in table 3 below.
TABLE 3 Table 3
Through the linear control of the rotating speed of the external fan and the addition of the correction coefficient according to the indoor environment temperature T Inner ring and the indoor environment relative humidity phi Inner ring in the control logic, the anti-condensation purpose is achieved at the minimum cost under the combined interval of different temperatures and humidity of the air conditioner, and therefore the problem of the reduction of the refrigerating capacity of the air conditioner caused by the anti-condensation is solved.
As a preferred embodiment of the present invention, the anti-condensation external fan speed control mode further includes:
S226: if the surface temperature T Outer tube of the copper tube of the heat exchanger of the outdoor unit is larger than the preset high-load heat exchanger copper tube temperature threshold T Threshold value of outer tube in the unit refrigeration mode, the unit is controlled to exit the condensation-preventing external fan rotating speed control mode.
The linear control can also avoid system disorder caused by wind gear back and forth switching, and the high-load outer tube temperature threshold T Threshold value of outer tube is set in the refrigeration mode on the basis of the system disorder, so that the problems of overhigh condensation temperature and pressure caused by low wind speed are further avoided.
Example 1:
based on the same inventive concept, this embodiment provides an anti-condensation control device of an air conditioner, including:
the acquisition module is used for acquiring the outdoor environment temperature;
The judging module is used for judging the running mode of the unit, judging whether the outdoor environment temperature is smaller than or equal to the sum of a preset temperature value and a temperature interval point correction value, judging that the outdoor environment temperature is in different preset temperature intervals, and judging whether the surface temperature of the copper tube of the heat exchanger of the outdoor unit is larger than a preset high-load copper tube temperature threshold value in the refrigerating mode of the unit;
The control module is used for judging the judging result of the judging module, controlling the opening degrees of the first electronic expansion valve and the second electronic expansion valve and controlling the rotating speed of the external fan;
The storage module is used for storing preset external fan rotating speeds corresponding to different preset temperature intervals.
Example 2
As shown in fig. 1-3, according to the same inventive concept, the present embodiment provides an air conditioner, which uses the above-mentioned control method for preventing condensation of an air conditioner, and includes an outdoor unit heat exchanger installed outdoors, an indoor unit heat exchanger installed indoors, and a compressor, wherein a refrigerant heat dissipation pipe is arranged between the outdoor unit and the indoor unit, a first electronic expansion valve is arranged between the refrigerant heat dissipation pipe and the outdoor unit, and a second electronic expansion valve is arranged between the refrigerant heat dissipation pipe and the indoor unit.
When the air conditioner operates in a heating mode, the opening of the first electronic expansion valve is adjusted in a throttling mode, the opening of the second electronic expansion valve is fully opened, and when the air conditioner operates in a refrigerating mode or a dehumidifying mode, the opening of the first electronic expansion valve is fully opened, and the opening of the second electronic expansion valve is adjusted in the throttling mode.
Example 3
Based on the same inventive concept, the present embodiment provides a computer storage medium storing a computer program, which when executed, can implement the above-described method for controlling the anti-condensation of an air conditioner.
The main functions of the invention are as follows: 1. according to the invention, the electronic expansion valves are arranged on the two sides of the cooling medium radiating pipe, so that the cooling medium firstly passes through the radiating pipe and then is throttled, and the problem of condensation of the main board caused by too low temperature of the throttled cooling medium is solved.
2. In the refrigeration mode or the dehumidification mode, the rotating speed of the external fan is controlled according to the fact that the outdoor environment temperature is in different temperature intervals, and the temperature interval points in different temperature intervals are corrected according to the actual indoor environment temperature and the indoor environment relative humidity, so that intelligent control is realized, the temperature of the refrigerant in the radiating pipe is controlled at a proper level, the problem of condensation of a main board is solved, and meanwhile, the problems of refrigeration capacity reduction and the like caused by improvement of condensation prevention are avoided.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides an anti-condensation control method of air conditioner, its characterized in that is applied to air conditioner anti-condensation control system, control system includes and is equipped with first electronic expansion valve between refrigerant cooling tube and the off-premises station, is equipped with the second electronic expansion valve between refrigerant cooling tube and the indoor set, and its control method specifically includes:
acquiring an operation mode of a unit, wherein the operation mode comprises a heating mode, a refrigerating mode and a dehumidifying mode;
If the operation mode of the unit is a heating mode, adjusting the opening of the first electronic expansion valve in a throttling mode, and controlling the opening of the second electronic expansion valve to be fully opened;
If the running mode of the unit is a refrigeration mode or a dehumidification mode, controlling the opening of the first electronic expansion valve to be fully opened, regulating the opening of the second electronic expansion valve in a throttling mode, and controlling the rotating speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity;
and controlling the rotating speed of the external fan according to the outdoor environment temperature, the indoor environment temperature and the indoor environment relative humidity, wherein the rotating speed control comprises the following steps:
if the outdoor environment temperature is less than or equal to the sum of a preset temperature value and a temperature interval point correction value, controlling the unit to enter a condensation-preventing external fan rotating speed control mode;
The temperature interval point correction value is determined according to the indoor environment temperature value and the indoor environment relative humidity;
the anti-condensation external fan rotating speed control mode comprises the following steps:
acquiring outdoor environment temperature, indoor environment temperature value and indoor environment relative humidity in real time;
Updating and determining the interval point values of different preset temperature intervals according to the sum of the initial interval point of the preset temperature interval and the temperature interval point correction value; controlling the rotating speed of the external fan according to the rotating speeds of the fans corresponding to the outdoor environment temperature in different preset temperature intervals;
Wherein, the initial interval points of different preset temperature intervals are preset in the controller of the unit.
2. The method for controlling condensation prevention of an air conditioner according to claim 1, wherein controlling the rotational speed of the external fan according to the rotational speeds of the fans corresponding to the outdoor environmental temperature in different preset temperature ranges comprises:
When the outdoor environment temperature is greater than or equal to a minimum interval point T N of a preset temperature interval and less than a maximum interval point T N+1 of the preset temperature interval, the rotating speed calculation formula of the external fan is as follows:
outer fan rotational speed
The outer ring is an outdoor environment temperature, S N+1 is a preset fan rotation speed corresponding to a maximum interval point T N+1 of a preset temperature interval, and S N is a preset fan rotation speed corresponding to a minimum interval point T N of the preset temperature interval.
3. The method of claim 1, wherein the anti-condensation fan speed control mode further comprises:
and if the surface temperature of the copper tube of the heat exchanger of the outdoor unit is larger than the preset high-load copper tube temperature threshold value of the heat exchanger in the refrigerating mode of the unit, controlling the unit to exit the anti-condensation external fan rotating speed control mode.
4. The method for controlling condensation prevention of an air conditioner according to claim 1, wherein the temperature interval point correction value is a difference value between a dew point temperature of the unit under different indoor environment temperatures and indoor environment relative humidity and a dew point temperature of the unit under a reference state.
5. An air conditioner anti-condensation control apparatus according to any one of claims 1 to 4, characterized by comprising:
the acquisition module is used for acquiring the outdoor environment temperature;
The judging module is used for judging the running mode of the unit, judging whether the outdoor environment temperature is less than or equal to the sum of the initial interval point of the preset temperature interval and the correction value of the temperature interval point, judging that the outdoor environment temperature is in different preset temperature intervals, and judging whether the surface temperature of the copper tube of the heat exchanger of the outdoor unit is greater than a preset high-load copper tube temperature threshold value of the heat exchanger in the refrigerating mode of the unit;
The control module is used for judging the judging result of the judging module, controlling the opening degrees of the first electronic expansion valve and the second electronic expansion valve and controlling the rotating speed of the external fan;
The storage module is used for storing preset external fan rotating speeds corresponding to different preset temperature intervals.
6. An air conditioner characterized in that the condensation prevention control method of the air conditioner according to any one of the claims 1-4 comprises an outdoor unit heat exchanger arranged outdoors, an indoor unit heat exchanger arranged indoors and a compressor, wherein a refrigerant radiating pipe is arranged between the outdoor unit and the indoor unit, a first electronic expansion valve is arranged between the refrigerant radiating pipe and the outdoor unit, and a second electronic expansion valve is arranged between the refrigerant radiating pipe and the indoor unit.
7. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed, is capable of realizing an air conditioner anti-condensation control method according to any one of the preceding claims 1-4.
CN202211339476.9A 2022-10-29 2022-10-29 Anti-condensation control method and device for air conditioner, air conditioner and medium Active CN115682283B (en)

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