CN108278736B

CN108278736B - Air conditioner and partial load control method and device thereof

Info

Publication number: CN108278736B
Application number: CN201810114162.6A
Authority: CN
Inventors: 谭建明; 胡乾龙; 黄章义; 石伟; 唐育辉; 徐美俊; 郭诗迪
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-07-17
Filing date: 2018-02-05
Publication date: 2021-09-10
Anticipated expiration: 2038-02-05
Also published as: CN107218707A; CN108302722A; CN108278736A

Abstract

The invention discloses an air conditioner and a method and a device for controlling partial load of the air conditioner. The air conditioner partial load control method comprises the following steps: receiving a target evaporation temperature and a set suction superheat degree input by a user; determining the current evaporation temperature according to the current air outlet temperature and the set suction superheat degree; and adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature. According to the invention, by adopting air quantity deviation adjustment, the evaporation temperature is stabilized within a reasonable range, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit is more stable and softer under partial load.

Description

Air conditioner and partial load control method and device thereof

Technical Field

The invention relates to the field of air conditioner load control, in particular to an air conditioner and a method and a device for controlling partial load of the air conditioner.

Background

The market of the current large-cooling-capacity frequency conversion commercial water-cooling cold air unit has appeared in a large quantity, according to the past operation statistical data, the frequency conversion unit operates under the condition of partial load for most of time, particularly for the unit above 100kw, the frequency conversion unit is often directly served for the whole building, and under the condition, the load requirement of a user always stays under the partial load.

Current frequency conversion unit, operation exists the unstable problem of evaporating temperature, the amount of wind is unstable under the partial load, makes the energy efficiency very high energy-conservation under the circumstances like this but can influence the change of air-out temperature, seriously influences user's use and experiences, influences company's brand.

Disclosure of Invention

In view of the technical problems, the invention provides an air conditioner and a method and a device for controlling the partial load of the air conditioner, which adopt load deviation adjustment to enable a unit to operate more stably under the partial load.

According to an aspect of the present invention, there is provided an air conditioner partial load control method, comprising:

receiving a target evaporation temperature and a set suction superheat degree input by a user;

determining the current evaporation temperature according to the current air outlet temperature and the set suction superheat degree;

and adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature.

In an embodiment of the present invention, the adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature includes:

determining the evaporation temperature change rate according to the current evaporation temperature and the evaporation temperature before the preset load adjustment time;

and adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature.

In an embodiment of the present invention, the adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate, and the current evaporation temperature includes:

determining a temperature judgment value according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature;

judging whether the temperature judgment value is less than or equal to a first load adjustment threshold value or not;

and if the temperature judgment value is less than or equal to the first load adjustment threshold value, increasing the current fan frequency.

In an embodiment of the present invention, the adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate, and the current evaporation temperature further includes:

if the temperature judgment value is larger than the first load adjustment threshold value, judging whether the temperature judgment value is smaller than or equal to a second load adjustment threshold value, wherein the second load adjustment threshold value is larger than the first load adjustment threshold value;

if the temperature judgment value is less than or equal to the second load adjustment threshold value, keeping the current fan frequency unchanged;

and if the temperature judgment value is larger than the second load adjustment threshold value, reducing the current fan frequency.

In one embodiment of the present invention, the increasing the current fan frequency includes: determining the frequency variation of the fan according to the current evaporation temperature and the evaporation temperature variation rate; and increasing the current fan frequency by the fan frequency variation.

In an embodiment of the present invention, the reducing the current fan frequency includes: determining the frequency variation of the fan according to the current evaporation temperature and the evaporation temperature variation rate; and reducing the current fan frequency by the fan frequency variable quantity.

In one embodiment of the invention, the method further comprises:

receiving a target air supply temperature input by a user;

acquiring the current air outlet temperature in real time;

and adjusting the current unit load according to the target air supply temperature and the current air outlet temperature.

In an embodiment of the present invention, the adjusting the current unit load according to the target supply air temperature and the current outlet air temperature includes:

determining an air outlet temperature difference according to the target air supply temperature and the current air outlet temperature;

determining the change rate of the air temperature according to the current air outlet temperature and the air outlet temperature before the preset air volume adjusting time;

and adjusting the current unit load according to the air outlet temperature difference and the air outlet temperature change rate.

In an embodiment of the present invention, the adjusting the current unit load according to the outlet air temperature difference and the outlet air temperature change rate includes:

judging whether the sum of the air outlet temperature difference and the air outlet temperature change rate is greater than or equal to a first air volume adjusting threshold value or not;

and if the sum of the air outlet temperature difference and the air outlet temperature change rate is greater than or equal to the first air volume adjusting threshold value, increasing the current unit load.

In an embodiment of the present invention, the adjusting the current unit load according to the outlet air temperature difference and the outlet air temperature change rate further includes:

if the sum of the air outlet temperature difference and the air outlet temperature change rate is smaller than a first air volume adjusting threshold value, judging whether the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a second air volume adjusting threshold value, wherein the second air volume adjusting threshold value is smaller than the first air volume adjusting threshold value;

if the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a second air volume adjusting threshold value, keeping the current unit load unchanged;

and if the sum of the air outlet temperature difference and the air outlet temperature change rate is smaller than a second air volume adjusting threshold value, reducing the current unit load.

In an embodiment of the present invention, the increasing the current unit load includes: determining the load variation according to the air outlet temperature difference and the air outlet temperature variation rate; and increasing the load of the current unit by the load variable quantity.

In an embodiment of the present invention, the reducing the current unit load includes: determining the load variation according to the air outlet temperature difference and the air outlet temperature variation rate; and reducing the load of the current unit by the load variable quantity.

According to another aspect of the present invention, there is provided an air conditioner partial load control apparatus comprising:

the superheat degree receiving module is used for receiving a target evaporation temperature input by a user and setting a suction superheat degree;

the evaporation temperature acquisition module is used for determining the current evaporation temperature according to the current air outlet temperature and the set suction superheat degree;

and the fan frequency adjusting module is used for adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature.

In one embodiment of the present invention, the fan frequency adjustment module includes:

the evaporation temperature change rate determining unit is used for determining the evaporation temperature change rate according to the current evaporation temperature and the evaporation temperature before the preset load adjusting time;

and the fan frequency adjusting unit is used for adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature.

In one embodiment of the present invention, the fan frequency adjusting unit includes:

the temperature judgment value determining submodule is used for determining a temperature judgment value according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature;

the third judgment submodule is used for judging whether the temperature judgment value is less than or equal to the first load adjustment threshold value or not;

and the first fan frequency adjusting submodule is used for increasing the current fan frequency under the condition that the third judging submodule judges that the temperature judging value is less than or equal to the first load adjusting threshold value.

In an embodiment of the present invention, the fan frequency adjusting unit further includes:

the fourth judgment submodule is used for judging whether the temperature judgment value is smaller than or equal to a second load regulation threshold value under the condition that the third judgment submodule judges that the temperature judgment value is larger than the first load regulation threshold value, wherein the second load regulation threshold value is larger than the first load regulation threshold value;

the second fan frequency adjusting submodule is used for keeping the current fan frequency unchanged under the condition that the fourth judging submodule judges that the temperature judging value is smaller than or equal to the second load adjusting threshold value;

and the third fan frequency adjusting submodule is used for reducing the current fan frequency under the condition that the fourth judging submodule judges that the temperature judging value is greater than the second load adjusting threshold value.

In one embodiment of the invention, the first fan frequency adjustment submodule is used for determining the fan frequency variation according to the current evaporation temperature and the evaporation temperature variation rate; and increasing the current fan frequency by the fan frequency variation.

In an embodiment of the present invention, the third fan frequency adjustment submodule is configured to determine a fan frequency variation according to the current evaporation temperature and the evaporation temperature variation rate; and reducing the current fan frequency by the fan frequency variable quantity.

In one embodiment of the present invention, the air conditioner partial load control apparatus further comprises:

the air supply temperature receiving module is used for receiving the target air supply temperature input by a user;

the air outlet temperature acquisition module is used for acquiring the current air outlet temperature in real time;

and the load adjusting module is used for adjusting the current unit load according to the target air supply temperature and the current air outlet temperature.

In one embodiment of the invention, the load adjustment module comprises:

the air outlet temperature difference determining unit is used for determining air outlet temperature difference according to the target air supply temperature and the current air outlet temperature;

the air outlet temperature change rate determining unit is used for determining the air temperature change rate according to the current air outlet temperature and the air outlet temperature before the preset air volume adjusting time;

and the load adjusting unit is used for adjusting the current unit load according to the air outlet temperature difference and the air outlet temperature change rate.

In one embodiment of the present invention, the load adjusting unit includes:

the first judgment submodule is used for judging whether the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a first air volume regulation threshold value or not;

and the first load adjusting submodule is used for increasing the load of the current unit under the condition that the first judging submodule judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is greater than or equal to the first air volume adjusting threshold value.

In one embodiment of the present invention, the load adjusting unit further includes:

the second judgment submodule is used for judging whether the sum of the air-out temperature difference and the air-out temperature change rate is larger than or equal to a second air volume regulation threshold value or not under the condition that the first judgment submodule judges that the sum of the air-out temperature difference and the air-out temperature change rate is smaller than the first air volume regulation threshold value, wherein the second air volume regulation threshold value is smaller than the first air volume regulation threshold value;

the second load adjusting submodule is used for keeping the current unit load unchanged under the condition that the second judging submodule judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is greater than or equal to a second air volume adjusting threshold;

and the third load adjusting submodule is used for reducing the current unit load under the condition that the second judging submodule judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is smaller than the second air volume adjusting threshold value.

In one embodiment of the invention, the first load adjustment submodule is used for determining the load variation according to the outlet air temperature difference and the outlet air temperature variation rate; and increasing the load of the current unit by the load variable quantity.

In an embodiment of the invention, the third load adjustment submodule is configured to determine a load variation according to the outlet air temperature difference and the outlet air temperature change rate; and reducing the load of the current unit by the load variable quantity.

According to another aspect of the present invention, there is provided an air conditioner partial load control device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method steps of any of the above embodiments when executing the program.

According to another aspect of the present invention, there is provided an air conditioner including the air conditioner partial load control device according to any one of the above embodiments.

According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions which, when executed by a processor, implement the partial load control method of the air conditioner as described in any of the above embodiments.

According to the invention, by adopting air quantity deviation adjustment, the evaporation temperature can be stabilized within a reasonable range, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit is more stable and soft in operation under partial load.

Drawings

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1a is a schematic diagram of a partial load control method of an air conditioner according to a first embodiment of the present invention.

Fig. 1b is a schematic diagram of a partial load control method of an air conditioner according to a second embodiment of the present invention.

Fig. 2a is a schematic diagram of a part load control method of an air conditioner according to a third embodiment of the present invention.

Fig. 2b is a schematic diagram of a fourth embodiment of the partial load control method of the air conditioner of the present invention.

Fig. 3 is a schematic diagram illustrating adjustment of a current unit load according to a target supply air temperature and a current outlet air temperature according to an embodiment of the present invention.

Fig. 4 is a schematic diagram illustrating adjustment of a current unit load according to an outlet air temperature difference and an outlet air temperature change rate in an embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating an adjustment of a current fan frequency according to a target evaporation temperature and a current evaporation temperature in an embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating the adjustment of the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature in one embodiment of the present invention.

Fig. 7 is a control timing chart of the air conditioner partial load control method according to the fifth embodiment of the present invention.

Fig. 8 is a schematic diagram comparing the effect of the partial load control method of the air conditioner of the present invention and the conventional control method on the adjustment of the supply air temperature.

Fig. 9a is a schematic diagram of a part load control device of an air conditioner according to a first embodiment of the present invention.

Fig. 9b is a schematic diagram of a second embodiment of the partial load control device of the air conditioner of the present invention.

Fig. 10 is a schematic diagram of a third embodiment of an air conditioner partial load control apparatus according to the present invention.

FIG. 11 is a diagram of a load leveling module according to an embodiment of the present invention.

Fig. 12 is a schematic diagram of a load adjustment unit according to an embodiment of the invention.

FIG. 13 is a schematic diagram of a fan frequency adjustment module according to an embodiment of the invention.

Fig. 14 is a schematic diagram of a fan frequency adjustment unit according to an embodiment of the present invention.

Fig. 15 is a schematic diagram of a fourth embodiment of an air conditioner partial load control apparatus according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1a is a schematic diagram of a partial load control method of an air conditioner according to a first embodiment of the present invention. Preferably, this embodiment can be performed by the air conditioner partial load control apparatus of the present invention. The method comprises the following steps:

step 1, receiving a target air supply temperature Tm input by a user.

And 2, acquiring the current air outlet temperature Ts in real time.

And 3, adjusting the current unit load according to the target air supply temperature Tm and the current air outlet temperature Ts, wherein the current unit load refers to the current compressor load output, namely the current compressor frequency F.

Based on the air conditioner partial load control method provided by the embodiment of the invention, the air outlet temperature can be stabilized by adopting load deviation adjustment, so that the air outlet temperature is in a range acceptable by a user, and the unit is more stable and softer in operation under partial load.

Fig. 1b is a schematic diagram of a partial load control method of an air conditioner according to a second embodiment of the present invention. Preferably, this embodiment can be performed by the air conditioner partial load control apparatus of the present invention. The method comprises the following steps:

and step 4, receiving the target evaporation temperature t2 input by the user and the set suction superheat Tx.

And 5, determining the current evaporation temperature t1 according to the current outlet air temperature Ts and the set suction superheat Tx.

In one embodiment of the present invention, step 5 may comprise: the current evaporating temperature t1 is determined according to the formula t 1-Ts-Tx.

And 6, adjusting the current fan frequency according to the target evaporation temperature t2 and the current evaporation temperature t 1.

Based on the air conditioner partial load control method provided by the embodiment of the invention, the air volume deviation adjustment is adopted, the evaporation temperature is stabilized in a reasonable range, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit can run more stably and softly under the partial load. The embodiment of the invention solves the technical problems of unstable evaporation temperature and unstable air volume of the existing frequency conversion unit in partial load operation, and improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

Fig. 2a is a schematic diagram of a part load control method of an air conditioner according to a third embodiment of the present invention. Preferably, this embodiment can be performed by the air conditioner partial load control apparatus of the present invention. As shown in fig. 2a, the method comprises the steps of:

step 1, receiving a target air supply temperature Tm input by a user.

And 2, acquiring the current air outlet temperature Ts in real time.

And 3, adjusting the load of the current unit according to the target air supply temperature Tm and the current air outlet temperature Ts.

Fig. 2b is a schematic diagram of a fourth embodiment of the partial load control method of the air conditioner of the present invention. Preferably, this embodiment can be performed by the air conditioner partial load control apparatus of the present invention. As shown in fig. 2b, the method comprises the steps of:

Step 1, receiving a target air supply temperature Tm input by a user.

And 2, acquiring the current air outlet temperature Ts in real time.

Based on the air conditioner partial load control method provided by the embodiment of the invention, the evaporation temperature is stabilized in a reasonable range by adopting load deviation adjustment and air volume deviation adjustment, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit can run more stably and softly under partial load. The embodiment of the invention solves the technical problems of unstable evaporation temperature and unstable air volume of the existing frequency conversion unit in partial load operation, and improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

Fig. 3 is a schematic diagram illustrating adjustment of a current unit load according to a target supply air temperature and a current outlet air temperature according to an embodiment of the present invention. As shown in fig. 3, step 3 in the embodiment of fig. 1a or fig. 2b may include:

and step 31, determining the air outlet temperature difference delta T1 to be Ts-Tm according to the target air supply temperature Tm and the current air outlet temperature Ts.

Step 32, adjusting the air outlet temperature Ts before the time delta t1 according to the current air outlet temperature Ts and the preset air volume_(t-Δt1)Determining the wind temperature change rate delta T2 as Ts_t-Ts_(t-Δt1)。

And step 33, adjusting the current unit load F according to the outlet air temperature difference delta T1 and the outlet air temperature change rate delta T2.

According to the embodiment of the invention, by adopting load deviation adjustment, the current unit load can be adjusted according to the air outlet temperature difference and the air outlet temperature change rate, so that the air outlet temperature can be stabilized, the phenomenon that the air outlet temperature does not meet the user requirement is avoided, and the stability of the unit partial load operation is improved.

Fig. 4 is a schematic diagram illustrating adjustment of a current unit load according to an outlet air temperature difference and an outlet air temperature change rate in an embodiment of the present invention. As shown in fig. 4, step 33 in the embodiment of fig. 3 may include:

and step 331, judging whether the sum delta T1+ delta T2 of the outlet air temperature difference delta T1 and the outlet air temperature change rate delta T2 is larger than or equal to a first air volume adjusting threshold value or not in a first preset period. If Δ T1+ Δ T2 is greater than or equal to the first air volume adjusting threshold, go to step 332; otherwise, if Δ T1+ Δ T2 is smaller than the first air volume adjusting threshold, step 333 is executed.

And step 332, increasing the load F of the current unit.

In one embodiment of the present invention, step 332 may comprise:

and step 3321, determining the load variation delta F according to the outlet air temperature difference delta T1 and the outlet air temperature change rate delta T2.

And step 3322, increasing the load variation delta F of the current unit load F.

And 333, judging whether the delta T1+ delta T2 is greater than or equal to a second air volume adjusting threshold value or not in a first preset period, wherein the second air volume adjusting threshold value is smaller than the first air volume adjusting threshold value. If Δ T1+ Δ T2 is greater than or equal to the second airflow rate adjustment threshold, go to step 334; otherwise, if Δ T1+ Δ T2 is smaller than the second air volume adjusting threshold, step 335 is executed.

Step 334, keeping the load F of the current unit unchanged;

and step 335, reducing the load F of the current unit.

In one embodiment of the present invention, the step 335 may include:

and step 3351, determining the load variation delta F according to the outlet air temperature difference delta T1 and the outlet air temperature change rate delta T2.

And step 3352, reducing the load variation delta F of the current unit load F.

According to the embodiment of the invention, the load increment can be determined according to the air outlet temperature difference and the temperature change rate, and a certain load increment is increased or reduced every time, so that the relationship between the air supply temperature and the actual output load can be more accurately determined.

In one embodiment of the present invention, step 3321 or step 3351 may comprise: and determining the load change quantity delta F according to a formula delta F-delta T1-alpha + delta T2-gamma, wherein alpha is a temperature difference correction coefficient, and gamma is an outlet air temperature change rate correction coefficient.

In an embodiment of the present invention, in the embodiment of fig. 4, the first predetermined period is 15s, the second air volume adjusting threshold is-1 ℃, and the first air volume adjusting threshold is 2 ℃.

That is, in this particular embodiment, if Δ T1+ Δ T2 ≧ 2 ℃ is monitored every 15s, the unit load F increases by Δ F, i.e., F ═ F + Δ F.

If the temperature of delta T1+ delta T2 is less than or equal to 2 ℃ when the monitored temperature is less than or equal to-1 every 15s, the load F of the unit is unchanged.

And if the monitored temperature of delta T1+ delta T2 is less than or equal to minus 1 ℃ every 15s, reducing the unit load F by delta F, namely F-delta F.

According to the embodiment of the invention, the load of the unit can be determined to be increased or decreased by comparing the sum of the air outlet temperature difference and the temperature change rate with the two threshold values, so that the relationship between the air supply temperature and the actual output load can be more accurately determined.

FIG. 5 is a schematic diagram illustrating an adjustment of a current fan frequency according to a target evaporation temperature and a current evaporation temperature in an embodiment of the present invention. As shown in fig. 5, step 6 in the embodiment of fig. 1b or fig. 2a or fig. 2b may include:

step 61, adjusting the evaporation temperature t1 before the time delta t2 according to the current evaporation temperature t1 and the preset load_(t-Δt2)Determining the evaporation temperature change rate delta t2-t 1_t-t1_(t-Δt2)。

And 62, adjusting the current fan frequency f according to the target evaporation temperature t2, the evaporation temperature change rate delta t2 and the current evaporation temperature t 1.

The embodiment of the invention provides a partial load control method with constant evaporation temperature, so that the problem of unstable evaporation temperature in the partial load operation of a unit is solved. According to the embodiment of the invention, by adopting load deviation adjustment and air volume deviation adjustment, the evaporation temperature can be stabilized within a reasonable range, the air outlet temperature can be stabilized, and the air outlet temperature is in a range acceptable by users, so that the unit can run more stably and softly under partial load.

FIG. 6 is a schematic diagram illustrating the adjustment of the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature in one embodiment of the present invention. As shown in fig. 6, step 62 in the embodiment of fig. 5 may include:

and 621, determining a temperature judgment value t1+ Δ t2-t2 according to the target evaporation temperature t2, the evaporation temperature change rate Δ t2 and the current evaporation temperature t1 in a second preset period.

At step 622, it is determined whether the temperature determination value t is less than or equal to the first load adjustment threshold. If the temperature judgment value t is less than or equal to the first load adjustment threshold, executing step 623; otherwise, if the temperature determination value is greater than the first air volume adjusting threshold, go to step 624.

And step 623, increasing the current fan frequency f. Therefore, the embodiment of the invention can increase the current fan frequency under the condition that the temperature judgment value is less than or equal to the first load regulation threshold value so as to realize the stable control of the air volume

In one embodiment of the present invention, step 623 may comprise:

in step 6231, a fan frequency variation Δ f is determined according to the current evaporation temperature t1 and the evaporation temperature variation rate Δ t 2.

Step 6232, increase the current fan frequency f by the fan frequency variation Δ f.

In step 624, it is determined whether the temperature determination value is less than or equal to a second load adjustment threshold, wherein the second load adjustment threshold is greater than the first load adjustment threshold. If the temperature determination value t is less than or equal to the second load adjustment threshold, go to step 625; otherwise, if the temperature determination value is greater than the second load adjustment threshold, step 626 is executed.

And step 625, keeping the current fan frequency f unchanged.

And step 626, reducing the current fan frequency f.

In one embodiment of the present invention, step 626 may comprise:

in step 6261, the fan frequency variation Δ f is determined according to the current evaporation temperature t1 and the evaporation temperature variation rate Δ t 2.

Step 6262, the current fan frequency f is decreased by the fan frequency variation Δ f.

According to the embodiment of the invention, the fan frequency variation can be determined according to the current evaporation temperature and the evaporation temperature variation rate, and a certain fan frequency variation is increased or reduced every time, so that the relationship between the evaporation temperature and the actual output load and the air supply volume can be more accurately determined.

In one embodiment of the present invention, step 6231 or step 6261 may comprise: and determining the fan frequency variation delta f according to a formula delta f-t 1-beta + delta t 2-delta, wherein beta is an evaporation temperature correction coefficient, and delta is an evaporation temperature change rate correction coefficient.

In one embodiment of the present invention, in the embodiment of fig. 6, the second predetermined period is 8s, the first load adjustment threshold is-2 ℃, and the second load adjustment threshold is 2 ℃.

That is, in this embodiment, if t1+ Δ t2 ≦ t2-2 is detected every 8s, the fan frequency f is increased by Δ f, i.e., f + Δ f.

If t2-2 is detected to be more than or equal to t1+ delta t2 is detected to be more than or equal to t2+2 every 8s, the fan frequency f is unchanged;

if t1+ Δ t2 ≧ t2+2 is detected every 8s, the fan frequency f is reduced by Δ f, i.e., f ═ f + Δ f.

The embodiment of the invention provides a partial load control method of an air conditioner of a variable-frequency commercial large-cold-capacity cold air unit with a variable air volume function, which can determine to increase or decrease the frequency of a fan by comparing a temperature judgment value determined by a target evaporation temperature, an evaporation temperature change rate and a current evaporation temperature with two threshold values, thereby more accurately realizing the stable control of the air volume and the evaporation temperature, further controlling the air supply temperature and further improving the stability of the unit in partial load operation.

Fig. 7 is a control timing chart of the air conditioner partial load control method according to the fifth embodiment of the present invention. As shown in fig. 7, the unit is powered on to complete the initialization process, and then is started, during the start operation, the opening of the throttling device and the frequency of the fan are adjusted according to the actual working condition, and the compressor is adjusted to 100% load step by step after operating for 3 minutes at the initial load (initial working frequency).

Specifically, the air conditioner partial load control method shown in fig. 7 may include:

in the first stage, the unit is started

Powering on the unit, and in the initialization process, opening the throttling device to the maximum opening; raising the frequency of the fan to the maximum; the fan and the electronic expansion valve (EXV) are closed.

Second stage, starting up the unit

The throttling device advances the compressor and adjusts the compressor to the initial opening degree; the fan advances the compressor and adjusts the frequency to the initial frequency; the compressor was adjusted to initial load on and run for 3 minutes.

In the above embodiment of the present invention, the electronic expansion valve is opened in advance to allow the refrigerant to be firstly circulated, and the blower is opened in advance to allow the air to be circulated in advance, so that the compressor can be ensured to normally operate when being opened, and the compressor is prevented from being out of order.

The third stage, the unit operation stage (0-100% load stage)

In the third stage, the present invention may control the unit part load according to the actual working condition according to the air conditioner part load control method described in any of the above embodiments (for example, any of fig. 1 to 6).

In an embodiment of the present invention, as shown in fig. 7, in the third stage, the partial load control method of the air conditioner may not further include: the opening degree of the electronic expansion valve EXV is controlled. The amount of change in the opening degree of the electronic expansion valve is adjusted by the suction superheat Tx.

In an embodiment of the present invention, the initial opening may be EXV1, and the real-time variation of the opening may be EXV 2. After the initial opening degree operation is finished, the target evaporation temperature t2 is set according to the actual suction superheat degree. The adjustment amount EXV2 may be determined every 5s according to (t2-Tx), Tx being the set suction superheat.

Therefore, in the embodiment of the invention, the display panel serves as an interactive platform to issue the start and stop command of the test mode to the air conditioning part load control device, and the air conditioning part load control device can adjust the compressor load signal, the electronic expansion valve signal and the fan frequency signal in real time according to the received sensor parameters, the temperature sensing bulb parameters and the alternating current contactor so as to control the stable operation of the unit in the operating state.

Fig. 8 is a schematic diagram comparing the effect of the partial load control method of the air conditioner of the present invention and the conventional control method on the adjustment of the supply air temperature. As shown in fig. 8, the adjusting effect of the present invention is much more stable than that of the conventional method, and the above embodiment of the present invention also avoids some extreme conditions during the startup state, thereby increasing the operation stability.

The embodiment of the invention provides a brand-new partial load control scheme for the large-scale variable-frequency air cooler. The air conditioner partial load control method provided by the embodiment of the invention can be suitable for large variable-frequency cold air units. The embodiment of the invention can realize the stable control of the evaporation temperature, further stabilize the air supply temperature and improve the stability of the unit in partial load operation.

Fig. 9a is a schematic diagram of a part load control device of an air conditioner according to a first embodiment of the present invention. As shown in fig. 9, the air conditioner partial load control device may include an air supply temperature receiving module 1, an air outlet temperature obtaining module 2, and a load adjusting module 3, wherein:

and the air supply temperature receiving module 1 is used for receiving the target air supply temperature Tm input by the user.

And the air outlet temperature acquisition module 2 is used for acquiring the current air outlet temperature Ts in real time.

And the load adjusting module 3 is configured to adjust a current unit load according to the target air supply temperature Tm and the current air outlet temperature Ts, where the current unit load refers to a current compressor load output, that is, a current compressor frequency F.

Based on the air conditioner partial load control device provided by the embodiment of the invention, the air outlet temperature can be stabilized by adopting load deviation adjustment, so that the air outlet temperature is in a range acceptable by a user, and the unit can run more stably and softly under partial load.

Fig. 9b is a schematic diagram of a second embodiment of the partial load control device of the air conditioner of the present invention. As shown in fig. 9b, the air conditioner partial load control device may include a superheat degree receiving module 4, an evaporation temperature acquiring module 5, and a fan frequency adjusting module 6, wherein:

and the superheat receiving module 4 is used for receiving the target evaporation temperature t2 input by the user and setting the suction superheat Tx.

And the evaporation temperature acquisition module 5 is used for determining the current evaporation temperature t1 according to the current outlet air temperature Ts and the set suction superheat Tx.

In one embodiment of the present invention, the evaporation temperature acquisition module 5 may be configured to determine the current evaporation temperature t1 according to the formula t1 — Ts-Tx.

And the fan frequency adjusting module 6 is used for adjusting the current fan frequency according to the target evaporation temperature t2 and the current evaporation temperature t 1.

In an embodiment of the present invention, the fan frequency adjustment module 6 in the embodiment of fig. 9b may be a fan frequency adjustment module as described in the embodiment of fig. 13.

Based on the air conditioner partial load control device provided by the embodiment of the invention, the air volume deviation adjustment is adopted, the evaporation temperature is stabilized in a reasonable range, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit can run more stably and softly under partial load. The embodiment of the invention solves the technical problems of unstable evaporation temperature and unstable air volume of the existing frequency conversion unit in partial load operation, and improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

Fig. 10 is a schematic diagram of a third embodiment of an air conditioner partial load control apparatus according to the present invention. Compared with the embodiment shown in fig. 9a, in the embodiment shown in fig. 10, the air conditioner partial load control device may further include a superheat degree receiving module 4, an evaporation temperature acquiring module 5, and a fan frequency adjusting module 6, wherein:

Based on the air conditioner partial load control device provided by the embodiment of the invention, the evaporation temperature is stabilized in a reasonable range by adopting load deviation adjustment and air volume deviation adjustment, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit can run more stably and softly under partial load. The embodiment of the invention solves the technical problems of unstable evaporation temperature and unstable air volume of the existing frequency conversion unit in partial load operation, and improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

FIG. 11 is a diagram of a load leveling module according to an embodiment of the present invention. As shown in fig. 11, the load adjustment module 3 in the embodiment of fig. 9a or fig. 10 may include an outlet air temperature difference determination unit 31, an outlet air temperature change rate determination unit 32, and a load adjustment unit 33:

and the air-out temperature difference determining unit 31 is configured to determine the air-out temperature difference Δ T1 as Ts-Tm according to the target air supply temperature Tm and the current air-out temperature Ts.

An outlet air temperature change rate determining unit 32, configured to adjust the outlet air temperature Ts before the time Δ t1 according to the current outlet air temperature Ts and the predetermined air volume_(t-Δt1)The rate of change of wind temperature Δ T2 is determined.

Wherein, the change rate of the outlet air temperature Delta T2 is Ts_t-Ts_(t-Δt1)。

And the load adjusting unit 33 is used for adjusting the current unit load F according to the outlet air temperature difference delta T1 and the outlet air temperature change rate delta T2.

Fig. 12 is a schematic diagram of a load adjustment unit according to an embodiment of the invention. As shown in fig. 12, the load adjusting unit 33 in the embodiment of fig. 11 may include a first determining sub-module 331, a first load adjusting sub-module 332, a second determining sub-module 333, a second load adjusting sub-module 334, and a third load adjusting sub-module 335, wherein:

the first judgment submodule 331 is configured to judge whether the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is greater than or equal to a first air volume adjustment threshold;

the first load adjusting submodule 332 is configured to increase the load of the current unit when the first determining submodule 331 determines that the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is greater than or equal to the first air volume adjusting threshold.

In an embodiment of the present invention, the first load adjustment submodule 332 is configured to determine a load variation according to the outlet air temperature difference Δ T1 and the outlet air temperature variation rate Δ T2; and increasing the load of the current unit by the load variable quantity.

The second judging submodule 333, configured to judge whether the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is greater than or equal to a second air volume adjusting threshold value, where the second air volume adjusting threshold value is smaller than the first air volume adjusting threshold value, when the first judging submodule 331 judges that the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is smaller than the first air volume adjusting threshold value;

the second load adjusting submodule 334 is configured to keep the current unit load unchanged when the second determining submodule 333 determines that the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is greater than or equal to the second air volume adjusting threshold;

and the third load adjusting submodule 335 is configured to reduce the current unit load when the second determining submodule 333 determines that the sum of the outlet air temperature difference Δ T1 and the outlet air temperature change rate Δ T2 is smaller than the second air volume adjusting threshold.

In an embodiment of the present invention, in the embodiment of fig. 12, the first predetermined period is 15s, the second air volume adjusting threshold is-1 ℃, and the first air volume adjusting threshold is 2 ℃.

In an embodiment of the present invention, the third load adjustment submodule 335 is configured to determine a load variation according to the outlet air temperature difference Δ T1 and the outlet air temperature variation rate Δ T2; and reducing the load of the current unit by the load variable quantity.

FIG. 13 is a schematic diagram of a fan frequency adjustment module according to an embodiment of the invention. As shown in fig. 13, the fan frequency adjustment module 6 in the embodiment of fig. 9b or fig. 10 may include an evaporation temperature change rate determination unit 61 and a fan frequency adjustment unit 62, wherein:

an evaporation temperature change rate determining unit 61 for adjusting the evaporation temperature t1 before the time Δ t2 according to the current evaporation temperature t1 and a predetermined load_(t-Δt2)The evaporation temperature change rate Δ t2 is determined.

Wherein, the evaporation temperature change rate delta t2 is t1_t-t1_(t-Δt2)。

And the fan frequency adjusting unit 62 is configured to adjust the current fan frequency f according to the target evaporation temperature t2, the evaporation temperature change rate Δ t2, and the current evaporation temperature t 1.

The embodiment of the invention provides a partial load control device with constant evaporation temperature, so that the problem of unstable evaporation temperature in the partial load operation of a unit is solved. According to the embodiment of the invention, by adopting load deviation adjustment and air volume deviation adjustment, the evaporation temperature can be stabilized within a reasonable range, the air outlet temperature can be stabilized, and the air outlet temperature is in a range acceptable by users, so that the unit can run more stably and softly under partial load.

Fig. 14 is a schematic diagram of a fan frequency adjustment unit according to an embodiment of the present invention. As shown in fig. 14, the fan frequency adjustment unit 62 in the embodiment of fig. 13 may include a temperature determination sub-module 621, a third determination sub-module 622, and a first fan frequency adjustment sub-module 623, wherein:

and a temperature judgment value determining submodule 621, configured to determine a temperature judgment value t according to the target evaporation temperature t2, the evaporation temperature change rate Δ t2 and the current evaporation temperature t1 at a second predetermined period, where t is t1+ Δ t2-t 2.

And a third determining submodule 622, configured to determine whether the temperature determination value t is smaller than or equal to the first load adjustment threshold.

And the first fan frequency adjusting submodule 623 is configured to increase the current fan frequency f under the condition that the third judging submodule 622 judges that the temperature judging value t is smaller than or equal to the first load adjusting threshold value.

In an embodiment of the present invention, the first fan frequency adjustment submodule 623 is configured to determine a fan frequency variation Δ f according to the current evaporation temperature t1 and the evaporation temperature variation rate Δ t 2; and increasing the current fan frequency f by the fan frequency variation delta f.

According to the embodiment of the invention, the fan frequency variation can be determined according to the current evaporation temperature and the evaporation temperature variation rate, and a certain fan frequency variation is added each time, so that the relationship between the evaporation temperature and the actual output load and the air supply volume can be more accurately determined.

In an embodiment of the present invention, as shown in fig. 14, the fan frequency adjusting unit may further include a fourth determining submodule 624, a second fan frequency adjusting submodule 625, and a third fan frequency adjusting submodule 626, wherein:

the fourth determining submodule 624 is configured to determine whether the temperature determination value t is smaller than or equal to a second load adjustment threshold value when the third determining submodule 622 determines that the temperature determination value t is greater than the first load adjustment threshold value, where the second load adjustment threshold value is greater than the first load adjustment threshold value.

And the second fan frequency adjusting submodule 625 is configured to, when the fourth determining submodule 624 determines that the temperature determination value t is smaller than or equal to the second load adjustment threshold, keep the current fan frequency f unchanged.

And the third fan frequency adjusting submodule 626 is configured to decrease the current fan frequency f when the fourth judging submodule 624 judges that the temperature judging value t is greater than the second load adjusting threshold.

In one embodiment of the present invention, the second predetermined period is 8s in the embodiment of fig. 14, the first load adjustment threshold is-2 ℃, and the second load adjustment threshold is 2 ℃.

The embodiment of the invention provides a partial load control method of an air conditioner of a variable-frequency commercial large-cold-capacity cold air unit with a variable air volume function, which can determine to increase or decrease the frequency of a fan by comparing a temperature judgment value determined by a target evaporation temperature, an evaporation temperature change rate and a current evaporation temperature with two threshold values, thereby more accurately realizing the stable control of the evaporation temperature, further controlling the air supply temperature and further improving the stability of the unit in partial load operation.

In an embodiment of the present invention, the third fan frequency adjustment submodule 626 is configured to determine a fan frequency change Δ f according to the current evaporation temperature t1 and the evaporation temperature change rate Δ t 2; and reducing the current fan frequency f by the fan frequency variation delta f.

Fig. 15 is a schematic diagram of a fourth embodiment of an air conditioner partial load control apparatus according to the present invention. As shown in fig. 15, the air conditioner part load control device may include a memory 151, a processor 152, and a computer program stored in the memory 151 and operable on the processor 152, wherein the processor 152 implements the method steps of any of the above embodiments when executing the program.

According to the embodiment of the invention, the evaporation temperature is stabilized in a reasonable range by adopting load deviation adjustment and air volume deviation adjustment, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by users, so that the unit is more stable and softer under partial load. The embodiment of the invention improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

Based on the air conditioner provided by the embodiment of the invention, the evaporation temperature is stabilized in a reasonable range by adopting load deviation adjustment and air volume deviation adjustment, the air outlet temperature is stabilized, and the air outlet temperature is in a range acceptable by a user, so that the unit can run more stably and softly under partial load. The embodiment of the invention improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

Based on the computer-readable storage medium provided by the above embodiment of the present invention, the evaporation temperature can be stabilized within a reasonable range by adopting load deviation adjustment and air volume deviation adjustment, and the air-out temperature is stabilized to be within a range acceptable by a user, so that the unit can operate more stably and softly under a partial load. The embodiment of the invention improves the use experience of the unit; the risk caused by temperature instability during partial load operation is reduced.

The air conditioning section load control devices described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.

Thus far, the present invention has been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An air conditioner partial load control method, comprising:

adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature;

wherein, the adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature comprises:

adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature;

wherein the determining the evaporation temperature change rate according to the current evaporation temperature and the evaporation temperature before the predetermined load adjustment time comprises: taking the difference value of the current evaporation temperature and the evaporation temperature before the preset load adjusting time as the evaporation temperature change rate;

wherein: the adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature comprises the following steps:

determining a temperature judgment value according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature, wherein the temperature judgment value is equal to the sum of the current evaporation temperature and the evaporation temperature change rate, and the target evaporation temperature is subtracted;

if the temperature judgment value is less than or equal to the first load adjustment threshold value, increasing the current fan frequency;

if the temperature judgment value is larger than the second load adjustment threshold value, reducing the current fan frequency;

wherein increasing the current fan frequency comprises: determining the frequency variation of the fan according to the current evaporation temperature and the evaporation temperature variation rate; and increasing the current fan frequency by the fan frequency variation.

2. The method of claim 1, wherein adjusting the current fan frequency based on the target evaporation temperature, the evaporation temperature rate of change, and the current evaporation temperature further comprises:

and if the temperature judgment value is less than or equal to the second load adjustment threshold value, keeping the current fan frequency unchanged.

3. The method of claim 2,

the reducing the current fan frequency comprises: determining the frequency variation of the fan according to the current evaporation temperature and the evaporation temperature variation rate; and reducing the current fan frequency by the fan frequency variable quantity.

4. The method according to any one of claims 1-3, further comprising:

receiving a target air supply temperature input by a user;

acquiring the current air outlet temperature in real time;

5. The method of claim 4, wherein adjusting the current unit load according to the target supply air temperature and the current outlet air temperature comprises:

6. The method of claim 5, wherein the adjusting the current unit load according to the outlet air temperature difference and the outlet air temperature change rate comprises:

7. The method of claim 6, wherein adjusting the current unit load according to the outlet air temperature difference and the outlet air temperature change rate further comprises:

8. The method of claim 6,

the increasing of the load of the current unit comprises the following steps: determining the load variation according to the air outlet temperature difference and the air outlet temperature variation rate; and increasing the load of the current unit by the load variable quantity.

9. The method of claim 7,

the reducing of the current unit load comprises: determining the load variation according to the air outlet temperature difference and the air outlet temperature variation rate; and reducing the load of the current unit by the load variable quantity.

10. A partial load control device for an air conditioner, comprising:

the superheat degree receiving module (4) is used for receiving a target evaporation temperature input by a user and setting the suction superheat degree;

the evaporation temperature acquisition module (5) is used for determining the current evaporation temperature according to the current air outlet temperature and the set suction superheat degree;

the fan frequency adjusting module (6) is used for adjusting the current fan frequency according to the target evaporation temperature and the current evaporation temperature;

wherein, fan frequency adjustment module (6) includes:

an evaporation temperature change rate determining unit (61) for determining an evaporation temperature change rate according to the current evaporation temperature and the evaporation temperature before the predetermined load adjustment time;

the device comprises an evaporation temperature change rate determining unit (61) and a load adjusting unit, wherein the evaporation temperature change rate determining unit is used for taking the difference value between the current evaporation temperature and the evaporation temperature before the preset load adjusting time as an evaporation temperature change rate;

the fan frequency adjusting unit (62) is used for adjusting the current fan frequency according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature;

wherein the fan frequency adjustment unit (62) comprises:

the temperature judgment value determining submodule (621) is used for determining a temperature judgment value according to the target evaporation temperature, the evaporation temperature change rate and the current evaporation temperature, wherein the temperature judgment value is equal to the sum of the current evaporation temperature and the evaporation temperature change rate, and the target evaporation temperature is subtracted;

a third judgment submodule (622) for judging whether the temperature judgment value is less than or equal to the first load adjustment threshold value;

the first fan frequency adjusting submodule (623) is used for increasing the current fan frequency under the condition that the third judging submodule (622) judges that the temperature judging value is smaller than or equal to the first load adjusting threshold value;

a fourth judgment submodule (624) for judging whether the temperature judgment value is equal to or less than a second load adjustment threshold value, which is greater than the first load adjustment threshold value, in the case where the third judgment submodule (622) judges that the temperature judgment value is greater than the first load adjustment threshold value;

the third fan frequency adjusting submodule (626) is used for reducing the current fan frequency under the condition that the fourth judging submodule (624) judges that the temperature judging value is larger than the second load adjusting threshold value;

the first fan frequency adjusting submodule (623) is used for determining the fan frequency variation according to the current evaporation temperature and the evaporation temperature variation rate; and increasing the current fan frequency by the fan frequency variation.

11. Air conditioning part load control device according to claim 10, characterized in that the fan frequency adjustment unit (62) further comprises:

and the second fan frequency adjusting submodule (625) is used for keeping the current fan frequency unchanged under the condition that the fourth judging submodule (624) judges that the temperature judging value is less than or equal to the second load adjusting threshold value.

12. An air conditioning part load control apparatus according to claim 11,

the third fan frequency adjusting submodule (626) is used for determining the fan frequency variation according to the current evaporation temperature and the evaporation temperature variation rate; and reducing the current fan frequency by the fan frequency variable quantity.

13. An air conditioning part load control device according to any one of claims 10-11, characterized by further comprising:

the air supply temperature receiving module (1) is used for receiving the target air supply temperature input by a user;

the air outlet temperature acquisition module (2) is used for acquiring the current air outlet temperature in real time;

and the load adjusting module (3) is used for adjusting the current unit load according to the target air supply temperature and the current air outlet temperature.

14. Air conditioning part load control device according to claim 13, characterized in that the load adjustment module (3) comprises:

the air outlet temperature difference determining unit (31) is used for determining the air outlet temperature difference according to the target air supply temperature and the current air outlet temperature;

the air outlet temperature change rate determining unit (32) is used for determining the air outlet temperature change rate according to the current air outlet temperature and the air outlet temperature before the preset air volume adjusting time;

and the load adjusting unit (33) is used for adjusting the current unit load according to the air outlet temperature difference and the air outlet temperature change rate.

15. Air conditioning part load control device according to claim 14, characterized in that the load adjusting unit (33) comprises:

the first judgment submodule (331) is used for judging whether the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a first air volume adjusting threshold value or not;

and the first load adjusting submodule (332) is used for increasing the load of the current unit under the condition that the first judging submodule (331) judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is greater than or equal to the first air volume adjusting threshold value.

16. Air conditioning part load control device according to claim 15, characterized in that the load adjusting unit (33) further comprises:

the second judgment submodule (333) is used for judging whether the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a second air volume regulation threshold value or not under the condition that the first judgment submodule (331) judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is smaller than the first air volume regulation threshold value, wherein the second air volume regulation threshold value is smaller than the first air volume regulation threshold value;

the second load adjusting submodule (334) is used for keeping the load of the current unit unchanged under the condition that the second judging submodule (333) judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is larger than or equal to a second air volume adjusting threshold value;

and the third load adjusting submodule (335) is used for reducing the current unit load under the condition that the second judging submodule (333) judges that the sum of the air outlet temperature difference and the air outlet temperature change rate is smaller than the second air volume adjusting threshold value.

17. An air conditioning part load control apparatus according to claim 16,

the first load adjustment submodule (332) is used for determining the load variation according to the outlet air temperature difference and the outlet air temperature variation rate; and increasing the load of the current unit by the load variable quantity.

18. An air conditioning part load control apparatus according to claim 17,

the third load adjustment submodule (335) is used for determining the load variation according to the outlet air temperature difference and the outlet air temperature variation rate; and reducing the load of the current unit by the load variable quantity.

19. An air conditioning part load control device comprising a memory (151), a processor (152) and a computer program stored on the memory (151) and executable on the processor (152), characterized in that the processor (152) implements the method steps of any of claims 1-9 when executing said program.

20. An air conditioner characterized by comprising the air conditioner partial load control device according to any one of claims 10 to 19.

21. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the partial load control method of an air conditioner according to any one of claims 1 to 9.