CN110986275A

CN110986275A - Air conditioner heating and defrosting control method, computer readable storage medium and air conditioner

Info

Publication number: CN110986275A
Application number: CN201911154046.8A
Authority: CN
Inventors: 范建波; 黄允棋; 司徒姗姗; 罗永前; 张世强
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Hangzhou Electric Appliances Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-04-10
Anticipated expiration: 2039-11-22
Also published as: CN110986275B

Abstract

The invention provides an air conditioner heating defrosting control method, a computer readable storage medium and an air conditioner. The air conditioning unit parameter that detects carries out the analysis and judge, and then increases the heat transfer between room air and indoor side heat exchanger through adjusting the fan rotational speed, effectively improves the efficiency of defrosting, and the temperature drop range in the time of can reducing the defrosting simultaneously.

Description

Air conditioner heating and defrosting control method, computer readable storage medium and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner heating and defrosting control method, a computer readable storage medium and an air conditioner.

Background

In the heating operation process of the household split air conditioner, the outdoor unit is easy to generate frost at low temperature. In order to ensure the heating capacity of the air conditioner and the reliability of the fan blades and the compressor, the system operation must be switched to a mode after a period of operation, and high-temperature and high-pressure refrigerant is introduced to heat and defrost the condenser. The temperature of a room is reduced in the defrosting process, so that people feel discomfort caused by temperature reduction, and the existing methods of heat storage defrosting, bypass defrosting and the like can reduce the indoor temperature reduction to a certain extent, but all the methods have the defects and cannot be widely applied.

Disclosure of Invention

Aiming at the defects of the prior art, the air conditioner heating defrosting control method easy to realize shortens defrosting time by enhancing indoor side heat exchange during conventional defrosting, so that the temperature drop amplitude during defrosting is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

a defrosting control method for air conditioning heating comprises the steps of detecting the ambient temperature in a unit when a defrosting condition is met in the operation process of an air conditioning hot mode, entering an accelerated defrosting mode if the ambient temperature meets a judgment condition, adjusting the angle of an air deflector to the maximum upward angle, detecting the temperature of an inner pipe of the unit in real time, calculating the difference value between the temperature of the inner pipe and the temperature of the inner environment, and adjusting the rotating speed of a fan to accelerate defrosting according to the difference value. The air conditioning unit parameter that detects carries out the analysis and judge, and then increases the heat transfer between room air and indoor side heat exchanger through adjusting the fan rotational speed, effectively improves the efficiency of defrosting, and the temperature drop range in the time of can reducing the defrosting simultaneously.

Further, if the internal environment temperature meets the judgment conditionEntering the defrosting acceleration mode specifically comprises the following steps: when the internal environment temperature T_{Inner ring}Satisfy T_{Inner ring}If the judgment condition is more than T1, the unit is controlled to enter an accelerated defrosting mode, wherein T1 is the preset inner ring lower limit temperature, and T1 is more than or equal to 10 ℃ and less than or equal to 20 ℃. When the internal environment temperature is higher than the set lower limit value, the internal environment temperature is high enough, and the room heat is also enough, so that the outside heat is increased by calling the room heat, the defrosting speed is further increased, and the comfort of the room is not greatly influenced.

Further, detecting the ambient temperature in the unit, if the ambient temperature T is detected_{Inner ring}Satisfy T_{Inner ring}And judging the condition less than or equal to T1, and controlling the unit to enter a conventional defrosting mode. When the internal environment temperature is not high, the heat of the room is insufficient, the room comfort is greatly influenced by improving the heat of the outer side, and the influence of defrosting on the room comfort can be reduced by selecting a conventional defrosting mode at the moment.

Further, the adjusting the rotating speed of the fan according to the difference value for accelerating defrosting specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If △ T is less than Y1, the fan is stopped, wherein Y1 is a preset temperature difference value, Y1 is more than or equal to-15 ℃ and Y1 is a set minimum temperature difference value, and when △ T is less than Y1, the fan is stopped because the temperature difference is too small, the upward air flow easily falls down to blow to people, and the fan can be effectively prevented from causing discomfort to the human body.

Further, the adjusting the rotating speed of the fan according to the difference value for accelerating defrosting specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y1 is not less than △ T and less than Y2, the fan operates at a rotating speed of X + A1, wherein Y2 is a preset temperature difference value, X is the initial rotating speed of the fan, A1 is a preset adjusting rotating speed, Y2 is not less than 25 ℃ and less than 5 ℃, Y1 is not less than Y2, X is not less than 200rpm and not more than 500 rpm, A1 is not less than 50rpm and not more than 200 rpm.

Go toAdjusting the rotating speed of the fan according to the difference value to accelerate defrosting specifically comprises the following steps: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y2 is not less than △ T and is not less than Y3, the fan operates at a rotating speed of X + A2, wherein Y3 is a preset temperature difference value, A2 is a preset adjusting rotating speed, Y3 is not less than-25 ℃ and not more than 5 ℃, Y2 is not less than Y3, and A2 is not less than 50rpm and not more than 200 rpm.

Further, the adjusting the rotating speed of the fan according to the difference value for accelerating defrosting specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y3 is not less than △ T and is not less than Y4, the fan operates at a rotating speed of X + A3, wherein Y4 is a preset temperature difference value, A3 is a preset adjusting rotating speed, Y4 is not less than-25 ℃ and not more than 5 ℃, Y3 is not less than Y4, and A3 is not less than 50rpm and not more than 200 rpm.

Further, the adjusting the rotating speed of the fan according to the difference value for accelerating defrosting specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}And if the △ T is larger than or equal to Y4, the fan operates at the rotating speed of X.

A computer-readable storage medium storing a computer program that, when invoked by a processor, implements the air conditioner heating and defrosting control method of any one of the above.

An air conditioner comprising a processor and a memory for storing a computer program that when invoked by the processor implements the air conditioner heating and defrosting control method of any of the above.

The air conditioner heating and defrosting control method, the computer readable storage medium and the air conditioner provided by the invention have the beneficial effects that: the defrosting time is shortened by enhancing the indoor side heat exchange during the conventional defrosting, the problem of long common defrosting time is solved, and meanwhile, the air conditioner has a common defrosting mode and has stronger adaptability; meanwhile, the temperature drop amplitude during defrosting is reduced, the problem of overlarge indoor temperature drop during common defrosting is solved, the comfort of a room is guaranteed, and the use experience of a user is improved.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

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 heating defrosting control method.

As shown in fig. 1, a control method for heating and defrosting of an air conditioner includes the following steps:

when the air-conditioning hot mode operation process meets the defrosting condition, detecting the ambient temperature in the unit, and when the ambient temperature T is within the set_{Inner ring}Satisfy T_{Inner ring}If the judgment condition is more than T1, the unit is controlled to enter an acceleration defrosting mode; if the internal ambient temperature T_{Inner ring}Satisfy T_{Inner ring}Judging the condition of not more than T1, and controlling the unit to enter a conventional defrosting mode; t1=15 ℃, defrosting is carried out when the air conditioner operates for 25min, the internal environment temperature is 12 ℃, and T is judged at the moment_{Inner ring}If the temperature is less than 15 ℃, the accelerated defrosting control is not executed, and the process is ended. The unit operates for 35min again, defrosting is carried out again, the internal environment temperature is 20 ℃, and T is judged at the moment_{Inner ring}And (4) controlling the defrosting acceleration at the temperature of more than 15 ℃.

After entering the defrosting acceleration control, when the four-way valve starts reversing, the air deflector is controlled to be adjusted to an angle N, the angle is generally the controllable maximum upward angle, the temperature of the air in a room can be lowered through the inner side heat exchanger according to the structure of a product, and cold wind is felt in order to prevent the air from blowing to people.

Then the inner fan starts to operate at an initial rotating speed Xrpm, and then T is judged according to the following_{Inner pipe}-T_{Inner ring}If the difference is too small, namely △ T is smaller than a Y1 value, the inner fan is stopped at the moment, if △ T is larger than or equal to Y1, the inner fan is controlled according to the following parameters, and the inner fan is judged and adjusted again after the time T every time of adjustment, so that the inner pipe temperature is not too low in the operation process.

If △ T is less than Y1, the rotating speed of the fan is 0, if Y1 is less than or equal to △ T is less than Y2, the fan is operated at the rotating speed of X + A1, if Y2 is less than or equal to △ T is less than Y3, the fan is operated at the rotating speed of X + A2, if Y3 is less than or equal to △ T is less than Y4, the fan is operated at the rotating speed of X + A3, if △ T is more than or equal to Y4, wherein Y1 is-20 ℃, Y2 is-5 ℃, Y3 is-3 ℃, Y4=2 ℃, X =300rpm, A1=150rpm, A2=100rpm, and A3=50 rpm.

When the first lattice of the angle of the air deflector of the prototype is the upward maximum angle, the air deflector is adjusted to the first lattice after the reversing is executed, the rotating speed of the inner fan is adjusted to 300rpm, and the temperature T of the inner pipe is detected_{Inner pipe}=39.5 ℃, internal ambient temperature T_{Inner ring}At 19 ℃ and T_{Inner pipe}-T_{Inner ring}If the temperature is not less than 10.5 ℃, the rotating speed of the inner fan does not need to be adjusted, the judgment is carried out again after 20s, and T is carried out after 4 20s_{Inner pipe}Cooling to 15 deg.C, T_{Inner ring}Reduced to 18.5 ℃ and T_{Inner pipe}-T_{Inner ring}At the moment of setting of = -3.5 ℃, the rotating speed of the internal fan is adjusted to 400rpm according to the setting, and after 3 times of 20 seconds, T is carried out_{Inner pipe}Cooling to 10 ℃ T_{Inner ring}Reduced to 18.5 ℃ and T_{Inner pipe}-T_{Inner ring}At this time, the rotation speed of the internal blower was adjusted to 450rpm, and then, if T is reached_{Inner pipe}-T_{Inner ring}And if the temperature is not lower than-20 ℃, keeping the current rotating speed of the inner fan until defrosting is finished.

Example 2: a computer readable storage medium.

A computer-readable storage medium storing a computer program that implements the air conditioner heating and defrosting control method of embodiment 1 when the computer program is called by a processor.

Example 3: a wall-mounted air conditioner.

A wall-mounted air conditioner comprising a processor and a memory, the memory being configured to store a computer program that, when invoked by the processor, implements the air conditioner heating and defrosting control method of 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

1. The air conditioner heating defrosting control method is characterized in that when the defrosting condition is met in the air conditioner heating mode operation process, the ambient temperature in a unit is detected, if the ambient temperature meets the judgment condition, the unit enters an accelerated defrosting mode, the angle of an air deflector is adjusted to the maximum upward angle, meanwhile, the temperature of an inner pipe of the unit is detected in real time, the difference value between the temperature of the inner pipe and the ambient temperature is calculated, and the rotating speed of a fan is adjusted according to the difference value to accelerate defrosting.

2. The air conditioning heating defrosting control method according to claim 1, wherein entering the defrosting acceleration mode if the internal ambient temperature satisfies the determination condition specifically includes: when the internal environment temperature T_{Inner ring}Satisfy T_{Inner ring}If the judgment condition is more than T1, the unit is controlled to enter an accelerated defrosting mode, wherein T1 is the preset inner ring lower limit temperature, and T1 is more than or equal to 10 ℃ and less than or equal to 20 ℃.

3. The air conditioning heating defrosting control method of claim 1, wherein the in-unit ambient temperature is detected, and if the in-unit ambient temperature T is detected_{Inner ring}Satisfy T_{Inner ring}And judging the condition less than or equal to T1, and controlling the unit to enter a conventional defrosting mode.

4. The air conditioning heating defrosting control method according to claim 1, wherein the adjusting of the fan rotation speed according to the difference value for defrosting by acceleration specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}And if △ T is less than Y1, stopping the fan, wherein Y1 is a preset temperature difference value, and Y1 is more than-25 ℃ and less than-15 ℃.

5. The air conditioning heating defrosting control method according to claim 1, wherein the adjusting of the fan rotation speed according to the difference value for defrosting by acceleration specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y1 is not more than △ T and is less than Y2, the fan operates at the rotating speed of X + A1, wherein Y2 is presetThe temperature difference value is that X is the initial rotating speed of the fan, A1 is the preset adjusting rotating speed, Y2 is more than or equal to minus 25 ℃ and less than or equal to 5 ℃, Y1 is more than or equal to Y2, X is more than or equal to 200rpm and less than or equal to 500 rpm, and A1 is more than or equal to 50rpm and less than or equal to 200 rpm.

6. The air conditioning heating defrosting control method according to claim 1, wherein the adjusting of the fan rotation speed according to the difference value for defrosting by acceleration specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y2 is not less than △ T and is not less than Y3, the fan operates at a rotating speed of X + A2, wherein Y3 is a preset temperature difference value, A2 is a preset adjusting rotating speed, Y3 is not less than-25 ℃ and not more than 5 ℃, Y2 is not less than Y3, and A2 is not less than 50rpm and not more than 200 rpm.

7. The air conditioning heating defrosting control method according to claim 1, wherein the adjusting of the fan rotation speed according to the difference value for defrosting by acceleration specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}If Y3 is not less than △ T and is not less than Y4, the fan operates at a rotating speed of X + A3, wherein Y4 is a preset temperature difference value, A3 is a preset adjusting rotating speed, Y4 is not less than-25 ℃ and not more than 5 ℃, Y3 is not less than Y4, and A3 is not less than 50rpm and not more than 200 rpm.

8. The air conditioning heating defrosting control method according to claim 1, wherein the adjusting of the fan rotation speed according to the difference value for defrosting by acceleration specifically comprises: inner tube temperature T_{Inner pipe}And internal ambient temperature T_{Inner ring}Difference △ T = T_{Inner pipe}-T_{Inner ring}And if the △ T is larger than or equal to Y4, the fan operates at the rotating speed of X.

9. A computer-readable storage medium storing a computer program, wherein the computer program, when being invoked by a processor, implements the air conditioner heating and defrosting control method according to any one of claims 1 to 8.

10. An air conditioner comprising a processor and a memory for storing a computer program, wherein the computer program when invoked by the processor implements the air conditioner heating and defrosting control method of any one of claims 1 to 8.