Control method of air conditioning equipment and air conditioning equipment

Abstract

The invention relates to the technical field of air conditioning equipment, and particularly provides a control method of air conditioning equipment and the air conditioning equipment. The problem that existing air conditioning equipment is insufficient in refrigerating capacity under the working conditions of outdoor low temperature and large indoor and outdoor temperature difference is solved. Therefore, the control method comprises the steps that when the air conditioning equipment operates in a refrigeration mode, the outdoor environment temperature and the indoor environment temperature are obtained, the refrigeration capacity of the air conditioning equipment is selectively improved according to the outdoor environment temperature and the indoor environment temperature, and the refrigeration capacity of the air conditioning equipment is improved by obtaining the outdoor environment temperature and the indoor environment temperature and calculating the indoor and outdoor temperature difference. When the outdoor temperature is low, due to the fact that the existing air conditioning equipment can limit the highest operation frequency, and when the indoor and outdoor temperature difference is large, the refrigerating capacity of the existing air conditioning equipment is insufficient, and consequently the indoor temperature cannot be lowered, at the moment, the air conditioning equipment can improve the refrigerating capacity, and therefore the indoor temperature can meet the requirements of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, and specifically provides a control method of air conditioning equipment and air conditioning equipment. BACKGROUND

[0002] With the improvement of people's living standards, air conditioners have gradually become essential household appliances in people's daily life.

[0003] The frequency control logic of the existing variable frequency air conditioner generally segments according to the outdoor environment temperature, divides the entire outdoor environment temperature into several temperature segments, and limits the maximum operating frequency of the air conditioner in each temperature segment. Generally, the maximum frequency of the high-temperature segment and the low-temperature segment is lower.

[0004] However, when the outdoor temperature is low and the indoor temperature is high, for example, in a boiler room, the outdoor temperature is very low in winter, and the boiler room still needs to operate refrigeration. However, due to the influence of the outer ring temperature frequency limiting, the air conditioner cannot operate at a high frequency at this time, resulting in poor refrigeration effect and affecting the user's experience.

[0005] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0006] The present application aims to solve the above technical problems, that is, to solve the problem of insufficient refrigeration capacity of the existing air conditioning equipment under the condition of low outdoor temperature and large indoor-outdoor temperature difference.

[0007] In a first aspect, the present application provides a control method of air conditioning equipment, the control method comprising: when the air conditioning equipment operates in a refrigeration mode, acquiring an outdoor environment temperature, denoted as an outer ring temperature T1; acquiring an indoor environment temperature, denoted as an inner ring temperature T2; and selectively increasing the refrigeration capacity of the air conditioning equipment according to the outer ring temperature T1 and the inner ring temperature T2.

[0008] In the preferred technical solution of the above control method of air conditioning equipment, the step of "selectively increasing the refrigeration capacity of the air conditioning equipment according to the outer ring temperature T1 and the inner ring temperature T2" specifically comprises: calculating the temperature difference between the inner ring temperature T2 and the outer ring temperature T1, denoted as a temperature difference △T, △T=T2-T1; and selectively increasing the refrigeration capacity of the air conditioning equipment according to the temperature difference △T and the outer ring temperature T1.

[0009] In the preferred technical scheme of the control method of the air conditioning device, the step of selectively increasing the refrigerating capacity of the air conditioning device according to the temperature difference AT and the outer ring temperature T1 specifically comprises: comparing the temperature difference AT with a first preset temperature difference AT1; comparing the outer ring temperature T1 with a preset temperature T0; and selectively increasing the refrigerating capacity of the air conditioning device according to the comparison results.

[0010] In the preferred technical scheme of the control method of the air conditioning device, the step of selectively increasing the refrigerating capacity of the air conditioning device according to the comparison results specifically comprises: if the temperature difference AT is not less than the first preset temperature difference AT1 and the outer ring temperature T1 is not greater than the preset temperature T0, the refrigerating capacity of the air conditioning device is increased.

[0011] In the preferred technical scheme of the control method of the air conditioning device, the step of increasing the refrigerating capacity of the air conditioning device specifically comprises: increasing the operating frequency of the compressor of the air conditioning device, the rotating speed of the outdoor fan of the air conditioning device and / or the rotating speed of the indoor fan of the air conditioning device.

[0012] In the preferred technical scheme of the control method of the air conditioning device, the control method further comprises: comparing the temperature difference AT with a second preset temperature difference AT2 and a third preset temperature difference AT3; wherein the second preset temperature difference AT2 is greater than the first preset temperature difference AT1, and the third preset temperature difference AT3 is greater than the second preset temperature difference AT2; and selectively increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and / or the rotating speed of the indoor fan according to the comparison results.

[0013] In the preferred technical scheme of the control method of the air conditioning device, the step of selectively increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and / or the rotating speed of the indoor fan according to the comparison results specifically comprises: if the temperature difference AT is less than the second preset temperature difference AT2, the operating frequency of the compressor is increased.

[0014] In the preferred technical scheme of the control method of the air conditioning device, the step of selectively increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and / or the rotating speed of the indoor fan according to the comparison results specifically comprises: if the temperature difference AT is not less than the second preset temperature difference AT2 and the temperature difference AT is less than the third preset temperature difference AT3, the operating frequency of the compressor is increased, and the rotating speed of the outdoor fan or the rotating speed of the indoor fan is increased.

[0015] In the preferred technical scheme of the control method of the air conditioning device, the step of selectively increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and / or the rotating speed of the indoor fan according to the comparison result specifically comprises: if the temperature difference AT is not less than the third preset temperature difference AT3, increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.

[0016] In the second aspect, the application further provides an air conditioning device, and the air conditioning device of the application further comprises a controller configured to execute the control method described above.

[0017] As can be understood by those skilled in the art, the air conditioning device of the application can obtain the outdoor ambient temperature and the indoor ambient temperature, and calculate the temperature difference between the outdoor ambient temperature and the indoor ambient temperature. When the outdoor temperature is low and the outdoor-indoor temperature difference is large, the air conditioning device of the application can increase the refrigeration capacity to reduce the indoor temperature, thereby meeting the use requirements of the user and improving the use experience of the user.

[0018] Further, the air conditioning device of the application can increase the refrigeration capacity by increasing the operating frequency of the compressor, the rotating speed of the outdoor fan and / or the rotating speed of the indoor fan, thereby providing multiple ways and further improving the refrigeration capacity of the air conditioning device.

[0019] Further, when the temperature difference between the outdoor ambient temperature and the indoor ambient temperature is between the first preset temperature difference and the second preset temperature difference, the air conditioning device of the application can increase the refrigeration capacity by increasing the operating frequency of the compressor, thereby quickly reducing the indoor temperature and meeting the use requirements of the user.

[0020] Further, when the temperature difference between the outdoor ambient temperature and the indoor ambient temperature is between the second preset temperature difference and the third preset temperature difference, the air conditioning device of the application can increase the refrigeration capacity by increasing the operating frequency of the compressor, and increasing the rotating speed of the outdoor fan or increasing the rotating speed of the indoor fan, thereby further improving the refrigeration capacity of the air conditioning device and meeting the use requirements of the user.

[0021] Further, when the temperature difference between the outdoor ambient temperature and the indoor ambient temperature is not less than the third preset temperature difference, the air conditioning device of the application can increase the refrigeration capacity by increasing the operating frequency of the compressor, increasing the rotating speed of the outdoor fan and increasing the rotating speed of the indoor fan, thereby further improving the refrigeration capacity and meeting the use requirements of the user. BRIEF DESCRIPTION OF DRAWINGS

[0022] The preferred embodiments of the application will be described below with reference to the accompanying drawings, in which: Figure 1is a flow chart of the control method of the air conditioning device of the present application; Figure 2 is a flow chart of an embodiment of the control method of the air conditioning device of the present application. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0024] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that in the description of the present application, although the steps of the control method of the present application are described in a specific order, these orders are not limiting, and those skilled in the art can perform the steps in different orders without deviating from the basic principles of the present application. For example, the execution order of steps S100 to S200 of the control method of the present application can also be interchanged, or steps S100 to S200 can be executed simultaneously. The technical solutions after adjustment belong to equivalent technical solutions with the technical solutions described in the present application, and thus will also fall within the protection scope of the present application.

[0025] It should be noted that in the description of the present application, the terms "inner", "outer", "upper", "lower", "top", "bottom", and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "provided", "connected", "mounted" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Based on the problem of insufficient refrigeration capacity of existing air conditioning devices under the working condition of low outdoor temperature and large indoor-outdoor temperature difference, the present application provides a control method of an air conditioning device and an air conditioning device, which aims to obtain the outdoor environment temperature and the indoor environment temperature, and calculate the temperature difference between the outdoor environment temperature and the indoor environment temperature. When the outdoor temperature is low and the indoor-outdoor temperature difference is large, the air conditioning device of the present application can improve the refrigeration capacity to reduce the indoor temperature, thereby meeting the use requirements of users and improving the use experience of users.

[0028] Specifically, the application provides an air conditioning device, comprising an indoor unit and an outdoor unit, the outdoor unit comprising a compressor, a condenser and an outdoor fan, the indoor unit comprising an evaporator and an indoor fan, the compressor, the evaporator and the condenser forming a refrigerant circulation loop, the outdoor fan being capable of blowing air towards the condenser so as to improve the heat exchange efficiency of the condenser, and the indoor fan being capable of blowing air towards the evaporator so as to improve the heat exchange efficiency of the evaporator.

[0029] The frequency control logic of the existing variable frequency air conditioner is segmented according to the outdoor environment temperature, and the core purpose is to optimize the refrigeration / heating effect under different temperatures on the premise of ensuring system stability and energy efficiency.

[0030] The frequency segmentation of the variable frequency air conditioner has the following effects: 1. Protecting the compressor: under extreme temperatures (such as high or low temperatures), the compressor operating frequency that is too high may cause overheating, overloading or insufficient lubrication, and segmented frequency limiting can prolong the service life of the equipment; 2. Optimizing energy efficiency: under different temperatures, the optimal efficiency of the system corresponds to different frequencies, and segmented control can avoid invalid high-energy consumption operation; 3. Balancing performance and reliability: when cooling at high temperature or heating at low temperature, the system pressure / temperature is close to the limit, and frequency limiting can prevent the system from collapsing.

[0031] For example, the outdoor environment temperature is divided into: low temperature section, medium-low temperature section, medium temperature section and high temperature section.

[0032] Low temperature section (such as ≤-10℃): high heating demand, but low compressor efficiency, frequency limiting to prevent frosting or oil return problems, for example, the compressor operating frequency is limited between 50Hz and 90Hz.

[0033] Medium-low temperature section (-10℃~10℃): heating efficiency is improved, and the frequency can be appropriately relaxed, for example, the compressor operating frequency is limited between 70Hz and 110Hz.

[0034] Medium temperature section (10℃~30℃): higher refrigeration / heating efficiency, and the frequency can be close to the maximum value, for example, the compressor operating frequency is limited between 90Hz and 130Hz.

[0035] High temperature section (≥30℃): large refrigeration demand, but high condensing pressure, frequency limiting to prevent compressor overheating or high pressure protection, for example, the compressor operating frequency is limited between 60Hz and 80Hz.

[0036] When the outdoor temperature is low and the indoor temperature is high, for example, in a boiler room, the outdoor temperature is low and the indoor temperature is high in winter, the air conditioning equipment needs to operate refrigeration, and under the influence of the outer ring temperature frequency limiting, the air conditioner cannot operate at a high frequency. For example, when the outdoor temperature is in the low temperature section, the compressor operating frequency is limited between 50Hz and 90Hz, so that the air conditioning equipment can only operate at a frequency of 90Hz, resulting in insufficient refrigeration capacity of the air conditioning equipment, poor refrigeration effect, and indoor environment temperature cannot be reduced, thereby affecting the user experience.

[0037] The air conditioning equipment of the present application can improve the refrigeration capacity to reduce the indoor temperature when the outdoor temperature is low and the indoor-outdoor temperature difference is large by obtaining the outdoor environment temperature and the indoor environment temperature and calculating the temperature difference between the outdoor environment temperature and the indoor environment temperature, thereby meeting the user's use demand and improving the user's use experience.

[0038] On the other hand, based on the above-mentioned air conditioning equipment, the present application further provides a control method for air conditioning equipment, as shown in Figure 1 The control method of the present application comprises the following steps: When the air conditioning equipment operates in refrigeration mode, S100: Obtain the outdoor environment temperature, denoted as the outer ring temperature T1.

[0039] Exemplarily, the outdoor unit of the present application is provided with a temperature sensor, which can detect the outdoor environment temperature and transmit the temperature information to the controller of the air conditioning equipment.

[0040] S200: Obtain the indoor environment temperature, denoted as the inner ring temperature T2.

[0041] Exemplarily, the indoor unit of the present application is provided with a temperature sensor, which can detect the indoor environment temperature and transmit the temperature information to the controller of the air conditioning equipment.

[0042] S300: According to the outer ring temperature T1 and the inner ring temperature T2, the refrigeration capacity of the air conditioning equipment is selectively improved.

[0043] Exemplarily, the air conditioning equipment of the present application can directly compare the size of the outer ring temperature T1 and the inner ring temperature T2, or also calculate the difference or ratio of the outer ring temperature T1 and the inner ring temperature T2, etc., so as to determine whether the refrigeration capacity of the air conditioning equipment meets the user's use demand.

[0044] Exemplarily, as shown in Figure 2 Step S300 comprises steps S310 to S330.

[0045] S310: Calculate the temperature difference between the inner ring temperature T2 and the outer ring temperature T1, denoted as temperature difference AT, AT = T2 - T1.

[0046] Exemplarily, the inner ring temperature T2 of the application is 30℃, the outer ring temperature T1 is 8℃, the temperature difference AT = T2 - T1 = 30℃ - 8℃ = 22℃, the application can directly compare the size of the temperature difference AT and the preset temperature difference, or the ratio of the temperature difference AT and the preset temperature difference, etc., so as to judge whether the refrigeration capacity of the air conditioning equipment meets the user's use demand.

[0047] S320: Compare the temperature difference AT with the first preset temperature difference AT1, and compare the outer ring temperature T1 with the preset temperature T0.

[0048] Exemplarily, the application directly compares the size of the temperature difference AT and the first preset temperature difference AT1, and directly compares the size of the outer ring temperature T1 and the preset temperature T0, according to the comparison result, whether the air conditioning equipment is refrigerated in the low temperature environment, and whether the refrigeration capacity of the air conditioning equipment meets the user's use demand can be judged.

[0049] S330: The temperature difference AT is not less than the first preset temperature difference AT1, and the outer ring temperature T1 is not greater than the preset temperature T0, then the refrigeration capacity of the air conditioning equipment is improved.

[0050] Exemplarily, the inner ring temperature T2 of the application is 30℃, the outer ring temperature T1 is 8℃, the temperature difference AT = T2 - T1 = 30℃ - 8℃ = 22℃, the first preset temperature difference AT1 is 20℃, AT > AT1, which indicates that the indoor and outdoor environment temperature difference is large at this time, the outer ring temperature T1 is 5℃, the preset temperature T0 is 10℃, T1 < T0, which indicates that the outdoor environment temperature is low at this time, at this time, the refrigeration capacity of the air conditioning equipment is improved, the refrigeration capacity is increased, so as to reduce the indoor environment temperature, so as to meet the user's use demand, and improve the user's use experience.

[0051] It should be noted that the application does not limit the value of the first preset temperature difference AT1, for example, the first preset temperature difference AT1 can also be set to 18℃ or 22℃, etc., the adjustment and change of the specific value of the first preset temperature difference AT1 does not deviate from the principle and scope of the application, and should be limited within the protection scope of the application.

[0052] It should be noted that the application does not limit the value of the preset temperature T0, for example, the preset temperature T0 can also be set to 8℃ or 12℃, etc., the adjustment and change of the specific value of the preset temperature T0 does not deviate from the principle and scope of the application, and should be limited within the protection scope of the application.

[0053] Preferably, the step S330 comprises a step S331.

[0054] S331: increasing the operating frequency of the compressor of the air conditioning device, the rotating speed of the outdoor fan of the air conditioning device, and / or the rotating speed of the indoor fan of the air conditioning device.

[0055] That is, the air conditioning device of the present application can increase the refrigerating capacity by three ways of increasing the operating frequency of the compressor, increasing the rotating speed of the outdoor fan, and increasing the rotating speed of the indoor fan.

[0056] It should be noted that the air conditioning device of the present application can increase the refrigerating capacity by one of the ways of increasing the operating frequency of the compressor, increasing the rotating speed of the outdoor fan, and increasing the rotating speed of the indoor fan, and can also increase the refrigerating capacity by two or three of the ways of increasing the operating frequency of the compressor, increasing the rotating speed of the outdoor fan, and increasing the rotating speed of the indoor fan, and such flexible adjustment and change do not deviate from the principles and scope of the present application, and should be limited within the protection scope of the present application.

[0057] The control method of the present application further comprises: comparing the temperature difference AT with a second preset temperature difference AT2 and a third preset temperature difference AT3; wherein the second preset temperature difference AT2 is greater than the first preset temperature difference AT1, and the third preset temperature difference AT3 is greater than the second preset temperature difference AT2.

[0058] That is, by comparing the temperature difference AT with the second preset temperature difference AT2 and the third preset temperature difference AT3, the degree of difference between the indoor and outdoor temperature differences can be judged, so as to adjust the way of increasing the refrigerating capacity of the air conditioning device.

[0059] If the temperature difference AT is less than the second preset temperature difference AT2, the operating frequency of the compressor is increased.

[0060] Exemplarily, the inner ring temperature T2 of the present application is 30℃, the outer ring temperature T1 is 8℃, the temperature difference AT = T2-T1 = 30℃-8℃ = 22℃, the second preset temperature difference AT2 is 25℃, AT2>AT, which indicates that the indoor and outdoor temperature difference is high at this time, and the refrigerating capacity can be increased by increasing the operating frequency of the compressor, so as to meet the use demand of the user.

[0061] If the temperature difference AT is not less than the second preset temperature difference AT2, and the temperature difference AT is less than the third preset temperature difference AT3, the operating frequency of the compressor is increased, and the rotating speed of the outdoor fan or the rotating speed of the indoor fan is increased.

[0062] Exemplarily, the inner ring temperature T2 of the air conditioning device is 36℃, the outer ring temperature T1 is 8℃, the temperature difference ΔT=T2-T1=36℃-8℃=28℃, the second preset temperature difference ΔT2 is 25℃, the third preset temperature difference ΔT3 is 30℃, and ΔT3>ΔT>ΔT2. It is illustrated that the indoor and outdoor temperature difference is very high at this time, and the refrigerating capacity cannot be increased by increasing the running frequency of the compressor, and the indoor temperature cannot be reduced to the appropriate temperature. At this time, the refrigerating capacity can be further increased by increasing the rotating speed of the outdoor fan or the rotating speed of the indoor fan, so that the indoor temperature can continue to be reduced, and the use requirement of the user can be met.

[0063] When the temperature difference ΔT is not less than the third preset temperature difference ΔT3, the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are increased.

[0064] Exemplarily, the inner ring temperature T2 of the air conditioning device is 39℃, the outer ring temperature T1 is 8℃, the temperature difference ΔT=T2-T1=39℃-8℃=31℃, the third preset temperature difference ΔT3 is 30℃, and ΔT>ΔT3. It is illustrated that the indoor and outdoor temperature difference is very large at this time, and the refrigerating capacity cannot be increased by increasing the running frequency of the compressor, and the refrigerating requirement cannot be met by increasing the rotating speed of the indoor fan and the rotating speed of the indoor fan. At this time, the refrigerating capacity can be further increased by increasing the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan, so that the indoor temperature can continue to be reduced, and the use requirement of the user can be met.

[0065] It should be noted that the value of the second preset temperature difference ΔT2 is not limited in the present application. For example, the second preset temperature difference ΔT2 can be set to 24℃ or 26℃, etc. The adjustment and change of the specific value of the second preset temperature difference ΔT2 do not deviate from the principles and scope of the present application, and should be limited within the protection scope of the present application.

[0066] It should be noted that the value of the third preset temperature difference ΔT3 is not limited in the present application. For example, the third preset temperature difference ΔT3 can be set to 29℃ or 31℃, etc. The adjustment and change of the specific value of the third preset temperature difference ΔT3 do not deviate from the principles and scope of the present application, and should be limited within the protection scope of the present application.

[0067] Preferably, the air conditioning device further comprises a controller, and the controller can control the air conditioning device to complete the control method of any one of the above.

[0068] Those skilled in the art will appreciate that the features of the various embodiments can be combined with each other in any combination within the scope of the application and form different embodiments. For example, in the claims of the application, any of the claimed embodiments can be used in any combination.

[0069] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will all fall within the protection scope of the present application.

Claims

1. A control method for an air conditioning device, characterized in that, The control method includes: When the air conditioning equipment is operating in cooling mode, Obtain the outdoor ambient temperature and denote it as the outer ring temperature T1; Obtain the indoor ambient temperature and record it as the inner ring temperature T2; The cooling capacity of the air conditioning device is selectively increased based on the outer ring temperature T1 and the inner ring temperature T2.

2. The control method for the air conditioning equipment according to claim 1, characterized in that, The step of "selectively increasing the cooling capacity of the air conditioning device based on the outer ring temperature T1 and the inner ring temperature T2" ​​specifically includes: Calculate the temperature difference between the inner ring temperature T2 and the outer ring temperature T1, and denot it as temperature difference ΔT, where ΔT = T2 - T1; The cooling capacity of the air conditioning equipment can be selectively increased based on the temperature difference ΔT and the outer ring temperature T1.

3. The control method for the air conditioning equipment according to claim 2, characterized in that, The step of "selectively increasing the cooling capacity of the air conditioning equipment based on the temperature difference ΔT and the outer ring temperature T1" specifically includes: The temperature difference ΔT is compared with the first preset temperature difference ΔT1; Compare the outer ring temperature T1 with the preset temperature T0; Based on the comparison results, the cooling capacity of the air conditioning equipment can be selectively increased.

4. The control method for the air conditioning equipment according to claim 3, characterized in that, The step of "selectively increasing the cooling capacity of the air conditioning equipment based on the comparison results" specifically includes: If the temperature difference ΔT is not less than the first preset temperature difference ΔT1, and the outer ring temperature T1 is not greater than the preset temperature T0, then the cooling capacity of the air conditioning equipment is improved.

5. The control method for the air conditioning equipment according to claim 4, characterized in that, The steps to "improve the cooling capacity of the air conditioning equipment" specifically include: Increase the operating frequency of the compressor of the air conditioning equipment, the speed of the outdoor fan of the air conditioning equipment, and / or the speed of the indoor fan of the air conditioning equipment.

6. The control method for the air conditioning equipment according to claim 5, characterized in that, The control method further includes: The temperature difference ΔT is compared with the second preset temperature difference ΔT2 and the third preset temperature difference ΔT3; Wherein, the second preset temperature difference △T2 is greater than the first preset temperature difference △T1, and the third preset temperature difference △T3 is greater than the second preset temperature difference △T2; Based on the comparison results, the operating frequency of the compressor, the speed of the outdoor fan, and / or the speed of the indoor fan may be selectively increased.

7. The control method for the air conditioning equipment according to claim 6, characterized in that, The step of "selectively increasing the operating frequency of the compressor, the speed of the outdoor fan, and / or the speed of the indoor fan based on the comparison results" specifically includes: If the temperature difference ΔT is less than the second preset temperature difference ΔT2, then the operating frequency of the compressor is increased.

8. The control method for the air conditioning equipment according to claim 6, characterized in that, The step of "selectively increasing the operating frequency of the compressor, the speed of the outdoor fan, and / or the speed of the indoor fan based on the comparison results" specifically includes: If the temperature difference ΔT is not less than the second preset temperature difference ΔT2, and the temperature difference ΔT is less than the third preset temperature difference ΔT3, then the operating frequency of the compressor is increased, and the speed of the outdoor fan or the speed of the indoor fan is increased.

9. The control method for the air conditioning equipment according to claim 6, characterized in that, The step of "selectively increasing the operating frequency of the compressor, the speed of the outdoor fan, and / or the speed of the indoor fan based on the comparison results" specifically includes: If the temperature difference ΔT is not less than the third preset temperature difference ΔT3, then the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are increased.

10. An air conditioning device, characterized in that, The air conditioning device includes a controller configured to perform the control method according to any one of claims 1 to 9.

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