Air conditioner control method, device and air conditioner

Abstract

The present invention provides an air conditioner control method, device and air conditioner, wherein the air conditioner control method includes: obtaining a first wind speed of ambient wind entering an outdoor unit of the air conditioner; obtaining a current rotational speed of the outdoor fan, and determining a second wind speed at which the outdoor fan runs at the current rotational speed in a windless state; determining a first rotational speed corresponding to the outdoor fan at the first wind speed based on the current rotational speed, the first wind speed and the second wind speed; controlling the opening of a throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed; the present invention controls the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed, thereby rationally utilizing ambient wind, improving the heat exchange efficiency of the air conditioner and saving energy.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner control method, an air conditioner control device and an air conditioner. Background Art

[0002] With the advancement of science and technology and the continuous improvement of people's living standards, air conditioners are widely used in people's daily lives.

[0003] During cooling or heating operations, the heat released by the outdoor unit's heat exchanger needs to be quickly dissipated into the air using the outdoor fan. Currently, the speed of an air conditioner's outdoor fan is controlled solely based on the unit's own operating conditions, without considering the influence of external wind direction and speed. Different ambient wind parameters have varying effects on the heat exchanger, resulting in inefficient utilization of the ambient wind and wasted resources. Summary of the Invention

[0004] The present invention provides an air conditioner control method, device and air conditioner, which are used to solve the problem in the prior art that different parameters of external ambient wind have different effects on a heat exchanger, the external ambient wind cannot be fully utilized, and resources are wasted.

[0005] The present invention provides an air conditioner control method, comprising: obtaining a first wind speed of ambient wind entering an outdoor unit of an air conditioner; obtaining a current rotational speed of an outdoor fan, and determining a second wind speed at which the outdoor fan operates at the current rotational speed in a windless state; determining a first rotational speed corresponding to the outdoor fan at the first wind speed based on the current rotational speed, the first wind speed, and the second wind speed; and controlling the opening of a throttling device to adjust the pressure between a compressor outlet and an inlet of the throttling device according to a direction of the first wind speed and a relationship between the first rotational speed and the current rotational speed.

[0006] According to an air conditioner control method provided by the present invention, the opening of the throttling device is controlled to adjust the pressure between the compressor outlet and the inlet of the throttling device according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed, including: obtaining the initial opening of the throttling device; when the first wind speed is negative, controlling the throttling device to operate with a first opening, the first opening being smaller than the initial opening; when the first wind speed is positive, controlling the opening of the throttling device according to the relationship between the first rotational speed and the current rotational speed.

[0007] According to an air conditioner control method provided by the present invention, when the first wind speed is in the positive direction, the opening of the throttling device is controlled according to the relationship between the first speed and the current speed, including: when the first speed is less than the current speed, the throttling device is controlled to operate at a second opening, and the second opening is greater than the initial opening; when the first speed is greater than or equal to the current speed, the throttling device is controlled to operate at a third opening, and the third opening is greater than the second opening.

[0008] According to an air conditioner control method provided by the present invention, the air conditioner control method also includes: in cooling mode, obtaining the current temperature of the outdoor heat exchanger outlet; or in heating mode, obtaining the current temperature of the outdoor heat exchanger inlet; determining the temperature difference between the current temperature and a preset temperature; and controlling the opening of the throttling device based on the relationship between the temperature difference and the preset temperature difference.

[0009] According to an air conditioner control method provided by the present invention, the opening of the throttling device is controlled according to the relationship between the temperature difference and the preset temperature difference, including: when the temperature difference is greater than a first preset temperature difference, controlling the opening of the throttling device to decrease, wherein the first preset temperature difference is greater than or equal to 0; when the temperature difference is less than a second preset temperature difference, controlling the opening of the throttling device to increase, wherein the second preset temperature difference is less than the first preset temperature difference.

[0010] According to an air conditioner control method provided by the present invention, the air conditioner includes a shell and an outdoor heat exchanger, the shell is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet are respectively provided on two adjacent side walls of the shell, and the air outlet is parallel to the first air inlet and perpendicular to the second air inlet; the outdoor heat exchanger is provided in the shell, and the outdoor heat exchanger is in contact with the external environment through the first air inlet, the second air inlet and the air outlet; obtaining a first wind speed of the ambient wind entering the air-conditioning outdoor unit, including: obtaining a third wind speed of the ambient wind entering the air-conditioning outdoor unit through the first air inlet; obtaining a fourth wind speed of the ambient wind entering the air-conditioning outdoor unit through the second air inlet; determining the first wind speed based on the third wind speed and the fourth wind speed, the first wind speed being equal to the sum of the third wind speed and the fourth wind speed.

[0011] According to an air conditioner control method provided by the present invention, a third wind speed of the ambient wind entering the air conditioner outdoor unit through the first air inlet is obtained, including: obtaining the fifth wind speed of the ambient wind at the first air inlet; obtaining the length of the first air inlet and the length of the outdoor heat exchanger, and determining a first ratio of the length of the first air inlet to the length of the outdoor heat exchanger; determining the third wind speed based on the relationship between the fifth wind speed and the first ratio, the third wind speed being equal to the product of the fifth wind speed and the first ratio.

[0012] According to an air conditioner control method provided by the present invention, a fourth wind speed of the ambient wind entering the air conditioner outdoor unit through the second air inlet is obtained, including: obtaining a sixth wind speed of the ambient wind at the second air inlet; obtaining the length of the second air inlet, and determining a second ratio of the length of the second air inlet to the length of the outdoor heat exchanger; and determining the fourth wind speed based on the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio.

[0013] According to an air conditioner control method provided by the present invention, the fourth wind speed is determined according to the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio, including: when the direction of the sixth wind speed is positive, the fourth wind speed is equal to the product of the sixth wind speed and the second ratio; when the direction of the sixth wind speed is negative, the fourth wind speed is equal to 0.

[0014] The present invention also provides an air conditioner control device, comprising: an acquisition module for acquiring a first wind speed of ambient wind entering an outdoor unit of the air conditioner; further for acquiring a current speed of the outdoor fan, and determining a second wind speed at which the outdoor fan runs at the current speed in a windless state; a control module for determining a first speed corresponding to the outdoor fan at the first wind speed based on the current speed, the first wind speed, and the second wind speed; and further for controlling the opening of a throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed.

[0015] The present invention also provides an air conditioner, comprising the air conditioner control device described above, and also comprising a shell and an outdoor heat exchanger, the shell being provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet being respectively arranged on two adjacent side walls of the shell, the air outlet being parallel to the first air inlet and perpendicular to the second air inlet; the outdoor heat exchanger being arranged in the shell, and the outdoor heat exchanger being in contact with the external environment through the first air inlet, the second air inlet and the air outlet.

[0016] The air conditioner control method, device and air conditioner provided by the present invention obtain the first wind speed of the ambient wind entering the air conditioner outdoor unit through a wind speed detection device, and understand the parameters of the ambient wind; determine the first speed of the outdoor fan when it runs at the first wind speed in a windless state based on the second wind speed, the current speed and the first wind speed of the outdoor fan when it runs at the current speed, and understand the speed at which the ambient wind can drive the outdoor fan to rotate when the outdoor fan is stopped; further, according to the direction of the first wind speed and the relationship between the first speed and the current speed, control the opening of the throttling device, adjust the pressure between the compressor outlet and the throttling device inlet, rationally utilize the ambient wind, improve the heat exchange efficiency of the air conditioner, and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 1 is a flow chart of the air conditioner control method provided by the present invention;

[0019] Figure 2 It is a structural diagram of the air-conditioning outdoor unit provided by the present invention;

[0020] Figure 3 This is a working principle diagram of the air conditioner provided by the present invention in cooling mode;

[0021] Figure 4 This is a working principle diagram of the air conditioner provided by the present invention in heating mode;

[0022] Figure 5 It is a structural schematic diagram of the electronic device provided by the present invention;

[0023] Reference numerals:

[0024] 1: Shell; 2: First air inlet; 3: Second air inlet; 4: Indoor heat exchanger; 5: Outdoor heat exchanger; 6: Compressor; 7: Throttling device; 8: Temperature monitoring device; L2: Length of the first air inlet; L3: Length of the second air inlet. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] The following combination Figures 1 to 5 The present invention describes an air conditioner control method, an air conditioner control device and an air conditioner.

[0027] The air conditioner control method provided in this embodiment includes: step 100, obtaining a first wind speed of ambient wind entering an outdoor unit of the air conditioner; step 200, obtaining a current rotational speed of the outdoor fan, and determining a second wind speed at which the outdoor fan runs at the current rotational speed in a windless state; step 300, determining a first rotational speed corresponding to the outdoor fan at the first wind speed based on the current rotational speed, the first wind speed, and the second wind speed; step 400, controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed.

[0028] Currently, air conditioners operate without considering the influence of outdoor ambient wind, resulting in discrepancies between the heat exchange effect and the actual heat exchange effect, and ineffective use of outdoor ambient wind. Therefore, the air conditioner control method provided in this embodiment controls the operation of the air conditioner based on the actual parameters of the outdoor ambient wind, thereby conserving resources while maintaining the current heating or cooling effect.

[0029] refer to Figure 1 In step 100, a first wind speed of the ambient wind entering the outdoor unit of the air conditioner is obtained; the first wind speed of the outdoor ambient wind entering the outdoor unit of the air conditioner is obtained through a wind speed detection device to understand the parameters of the ambient wind, wherein the first wind speed is a vector having a direction and a magnitude. When the direction in which the ambient wind enters the outdoor unit of the air conditioner is consistent with the direction in which the air enters the air inlet, the first wind speed is a positive value; when the direction in which the ambient wind enters the outdoor unit of the air conditioner is opposite to the direction in which the air enters the air inlet, the first wind speed is a negative value.

[0030] Step 200, obtain the current speed of the outdoor fan, and determine the second wind speed of the outdoor fan running at the current speed in a windless state; by obtaining the current speed of the outdoor fan, understand the current operating status of the outdoor fan.

[0031] In a windless state, the air-conditioning outdoor unit is controlled to operate at different speeds, and the corresponding wind speed is obtained to determine the relationship between the speed and wind speed of the outdoor fan in a windless state; further, the second wind speed of the outdoor fan is determined when the air-conditioning outdoor fan operates at the current speed in a windless state.

[0032] Step 300, based on the current rotational speed, the first wind speed and the second wind speed, determines the first rotational speed corresponding to the outdoor fan at the first wind speed; this embodiment obtains the first wind speed of the ambient wind entering the air-conditioning outdoor unit, and the first wind speed can drive the outdoor fan to rotate, so as to obtain the first rotational speed of the outdoor fan corresponding to the first wind speed in a windless state, and then obtain the influence of the first wind speed entering the air-conditioning outdoor unit on the rotational speed of the outdoor fan.

[0033] Specifically, in a windless state, the wind speed of the outdoor fan at different speeds is obtained, and then the relationship between the speed and wind speed of the outdoor fan is obtained. For example, in a windless state, when the outdoor fan runs at the current speed N, the wind speed is the second wind speed F2, and F2=KN; further, in a windless state, when the outdoor fan runs at the first wind speed F1, the first speed N1 of the outdoor fan is equal to F1 / K, that is, N1=F1N / F2.

[0034] In another embodiment, in a windless state, the wind speed of the outdoor fan when running at the current speed N is a second wind speed F2, F2 = KN + m (m is a constant); further, in a windless state, when the outdoor fan runs at a first wind speed F1, the first speed N1 of the outdoor fan is equal to F1 / K, that is, N1 = F1N / F2-m.

[0035] In this embodiment, the calculation method of the first rotational speed is not specifically limited and is limited according to the operating conditions of the outdoor fan. The calculation method of the first rotational speed is different in different operating conditions.

[0036] Step 400 : Control the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed.

[0037] refer to Figure 3 In the cooling mode, the outlet of the compressor is connected to the inlet of the outdoor heat exchanger, and the outlet of the outdoor heat exchanger is connected to the inlet of the indoor heat exchanger, and a throttling device is provided between the two for throttling and reducing pressure, and the outlet of the indoor heat exchanger is connected to the inlet of the compressor.

[0038] In the actual working process, the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gas, and sends it to the outdoor heat exchanger (condenser) for cooling. After cooling, it becomes a liquid refrigerant at room temperature and high pressure and enters the throttling device. After passing through the throttling device, it becomes a low-temperature and low-pressure liquid and enters the indoor heat exchanger (evaporator). After passing through the evaporator, it absorbs heat from the air and vaporizes into a gas, and then returns to the compressor to continue compression, realizing cycle refrigeration.

[0039] refer to Figure 4In the heating mode, the outlet of the compressor is connected to the inlet of the indoor heat exchanger, and the outlet of the indoor heat exchanger is connected to the inlet of the outdoor heat exchanger, and a throttling device is provided between the two for throttling and reducing pressure, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor.

[0040] During the actual working process, the compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gas, and sends it to the indoor heat exchanger (condenser), where it condenses and liquefies, releasing heat to become a liquid at room temperature and high pressure, while heating the indoor air and increasing the indoor ambient temperature; the liquid refrigerant enters the throttling device for decompression to form a low-pressure and low-temperature liquid, which enters the outdoor heat exchanger (evaporator), evaporates and absorbs heat to become a gas, and at the same time absorbs heat from the outdoor air before entering the compressor again to start the next cycle.

[0041] Furthermore, the larger the opening of the throttling device, the greater the flow rate from the compressor outlet into the condenser, and the flow rate of the refrigerant from the condenser into the throttling device, and the smaller the pressure between the compressor outlet and the throttling device inlet; the smaller the opening of the throttling device, the smaller the flow rate from the compressor outlet into the condenser, and the flow rate of the refrigerant from the condenser into the throttling device, and the greater the pressure between the compressor outlet and the throttling device; the first wind speed of the ambient wind entering the air-conditioning outdoor unit can affect the heat exchange effect of the air-conditioning outdoor unit. This embodiment controls the opening of the throttling device according to the direction of the first wind speed and the relationship between the first speed and the current speed, changes the pressure between the compressor outlet and the throttling device inlet, rationally utilizes the ambient wind, improves the heat exchange efficiency of the air conditioner, and saves energy.

[0042] This embodiment obtains the first wind speed of the ambient wind entering the outdoor unit of the air conditioner through a wind speed detection device to understand the parameters of the ambient wind; determines the first speed of the outdoor fan when it is running at the first wind speed in a windless state based on the second wind speed, the current speed and the first wind speed when the outdoor fan is running at the current speed in a windless state, and understands the speed at which the ambient wind can drive the outdoor fan to rotate when the outdoor fan is stopped; further, based on the direction of the first wind speed and the relationship between the first speed and the current speed, controls the opening of the throttling device, adjusts the pressure between the compressor outlet and the throttling device inlet, rationally utilizes the ambient wind, improves heat exchange efficiency, and saves energy.

[0043] On the basis of the above embodiments, further, according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed, the opening of the throttling device is controlled to adjust the pressure between the compressor outlet and the throttling device inlet, including: obtaining the initial opening of the throttling device; when the first wind speed is negative, controlling the throttling device to operate with a first opening, the first opening is smaller than the initial opening; when the first wind speed is positive, controlling the opening of the throttling device according to the relationship between the first rotational speed and the current rotational speed.

[0044] The first wind speed of the ambient wind entering the air-conditioning outdoor unit is F1, the current speed of the outdoor fan is N, the second wind speed of the outdoor fan running at the current speed N in a windless state is F2, and when the wind speed of the outdoor fan running in a windless state is F1, the first speed of the outdoor fan is N1, that is, when the outdoor fan is stopped, the ambient wind enters the air-conditioning outdoor unit at the first wind speed F1, which can drive the first speed of the outdoor fan to N1.

[0045] Obtain the initial opening P0 of the throttling device. When the direction of the first wind speed F1 of the ambient wind entering the air-conditioning outdoor unit is opposite to the air inlet direction of the air inlet, the ambient wind entering the air-conditioning outdoor unit will have a negative impact on the outdoor heat exchanger. The opening of the throttling device is controlled to be reduced, and it is operated at the first opening P1 to increase the pressure between the evaporator and the throttling device. The flow rate of the refrigerant in the condenser is slow, and the temperature change on both sides of the throttling device is large, which reduces the impact of the first wind speed on the outdoor heat exchanger and improves the heat exchange efficiency.

[0046] In a specific embodiment, the initial opening of the throttling device is P0. When the first wind speed is negative, the opening of the throttling device is controlled to be P1, wherein P1 = P0-10 (steps), or P1 = 90% P0.

[0047] When the direction of the ambient wind entering the air-conditioning outdoor unit is consistent with the air inlet direction of the air inlet, F1>0, which is a positive value; when the outdoor fan is running, the ambient wind entering the air-conditioning outdoor unit is helpful for heat exchange; in a windless state, the second wind speed F2 when the outdoor fan is running at the current speed N is a positive value; in a windless state, when the outdoor fan is running at the first wind speed F1, the first speed is N1, which is a positive value; at this time, the opening of the throttling device is controlled to increase (greater than the initial opening), reduce the pressure between the compressor outlet and the throttling device, increase the flow rate of the refrigerant in the condenser, and reduce the temperature change on both sides of the throttling device, thereby reducing the heat exchange rate of the air conditioner itself, and rationally utilizing the ambient wind without affecting the heat exchange effect to save energy.

[0048] On the basis of the above embodiment, further, when the first wind speed is positive, the opening of the throttling device is controlled according to the relationship between the first speed and the current speed, including: when the first speed is less than the current speed, the throttling device is controlled to operate at a second opening, and the second opening is greater than the initial opening; when the first speed is greater than or equal to the current speed, the throttling device is controlled to operate at a third opening, and the third opening is greater than the second opening.

[0049] When the direction of the first wind speed F1 of the ambient wind entering the air-conditioning outdoor unit is consistent with the air inlet direction of the air inlet, the first wind speed F1 is greater than 0 and is a positive value; further, the first rotational speed N1 is compared with the current rotational speed N. When the first rotational speed N1 is less than the current rotational speed N, the first wind speed F1 of the ambient wind is beneficial to the heat exchange of the outdoor heat exchanger, but at this time the first rotational speed N1 corresponding to the first wind speed is less than the current rotational speed, and the opening of the throttling device is controlled to increase and operate at the second opening P2, wherein the second opening P2 is greater than the initial opening P0, thereby reducing the pressure between the compressor outlet and the throttling device. While ensuring the heat exchange effect, the ambient wind is utilized to reduce the heat exchange efficiency of the air conditioner itself and save energy.

[0050] When the first speed is greater than the current speed, the first speed N1 corresponding to the first wind speed F1 of the ambient wind is greater than the current speed N, that is, in a windless state, the speed of the outdoor fan in the air-conditioning outdoor unit when running at the first wind speed is the first speed N, and the heat exchange effect generated by it exceeds the heat exchange effect brought by running at the current speed N. Based on this, the opening of the throttling device is controlled to increase and run at the third opening P3, wherein the third opening P3 is greater than the second opening P2, thereby reducing the pressure between the compressor outlet and the throttling device, rationally utilizing the ambient wind, reducing the heat exchange efficiency of the air conditioner itself, and saving energy.

[0051] In one embodiment, when the direction of the first wind speed F1 of the ambient wind entering the air-conditioning outdoor unit is consistent with the air inlet direction of the air inlet, the first wind speed F1 is in the positive direction; the initial opening of the throttling device is obtained as P0; further, the first rotational speed N1 is compared with the current rotational speed N. When the first rotational speed N1 is greater than 0 and less than the current rotational speed (0<N1<N), the opening of the throttling device is controlled to operate at the second opening P2, where P2=P0+10 (steps); when the first rotational speed N1 is greater than the current rotational speed N (N1>N), the opening of the throttling device is controlled to operate at the third opening P3, where P3=P0+20 (steps); in this embodiment, when the first wind speed F1 is in the positive direction, the opening of the throttling device is increased, the pressure between the compressor outlet and the throttling device is reduced, the heat exchange efficiency of the air conditioner itself is reduced, the ambient wind is reasonably utilized to improve the heat exchange efficiency of the outdoor heat exchanger, and energy is saved.

[0052] On the basis of the above embodiments, the air conditioner control method further includes: in cooling mode, obtaining the current temperature of the outdoor heat exchanger outlet; or in heating mode, obtaining the current temperature of the outdoor heat exchanger inlet; determining the temperature difference between the current temperature and the preset temperature; and controlling the opening of the throttling device according to the relationship between the temperature difference and the preset temperature difference.

[0053] A temperature monitoring device is provided between the outdoor heat exchanger of the air conditioner and the throttling device, which is used to detect the current temperature of the inlet or outlet of the outdoor heat exchanger of the air conditioner; in the cooling mode, the preset temperature of the outlet of the outdoor heat exchanger (condenser) is T0, and T0 is set according to the outdoor ambient temperature. Generally, T0 is greater than the outdoor ambient temperature. For example, when the outdoor ambient temperature is 30°C, T0 is 32°C; further, the current temperature T1 of the outdoor heat exchanger outlet is obtained at intervals of a certain period of time (such as 1 minute), and the temperature difference between the current temperature T1 and the preset temperature T1 is determined, that is, ΔT = T1-T0.

[0054] In the hot mode, the preset temperature at the inlet of the outdoor heat exchanger (evaporator) is T0, which is set according to the outdoor ambient temperature. Generally, T0 is lower than the outdoor ambient temperature. For example, when the outdoor ambient temperature is 15°C, T0 is 5°C. Furthermore, the current temperature T1 at the inlet of the outdoor heat exchanger is obtained at regular intervals to determine the temperature difference between the current temperature T1 and the preset temperature T1, i.e., ΔT = T1 - T0.

[0055] According to the relationship between the temperature difference and the preset temperature difference, the opening of the throttling device is controlled, the pressure between the compressor outlet and the throttling device inlet is adjusted, the temperature difference between the two ends of the throttling device is changed, the heat exchange efficiency is improved, and energy is saved while ensuring the heat exchange effect.

[0056] On the basis of the above embodiment, further, according to the relationship between the temperature difference and the preset temperature difference, the opening of the throttling device is controlled, including: when the temperature difference is greater than the first preset temperature difference, the opening of the throttling device is controlled to decrease, wherein the first preset temperature difference is greater than or equal to 0; when the temperature difference is less than the second preset temperature difference, the opening of the throttling device is controlled to increase, wherein the second preset temperature difference is less than the first preset temperature difference.

[0057] In cooling mode, the temperature difference between the current temperature T1 at the outdoor heat exchanger outlet and the preset temperature T0 is 5°C, or in heating mode, the temperature difference between the current temperature T1 at the outdoor heat exchanger inlet and the preset temperature T0 is 5°C, and the temperature difference is greater than the first preset temperature difference (1°C). At this time, the current temperature at the outdoor heat exchanger outlet is greater than the preset temperature, and the opening of the throttling device is controlled to decrease, the pressure between the compressor outlet and the throttling device inlet is increased, the temperature difference on both sides of the throttling device is increased, and the heat exchange efficiency is improved.

[0058] In cooling mode, the temperature difference between the current temperature T1 at the outdoor heat exchanger outlet and the preset temperature T0 is -3°C, or in heating mode, the temperature difference between the current temperature T1 at the outdoor heat exchanger inlet and the preset temperature T0 is -3°C, and the temperature difference is less than the second preset temperature difference (-1°C). At this time, the current temperature at the outdoor heat exchanger outlet is less than the preset temperature, and the opening of the throttling device is controlled to increase, thereby reducing the pressure between the compressor outlet and the throttling device inlet, narrowing the temperature difference on both sides of the throttling device, reducing the heat exchange efficiency of the air conditioner itself, and saving energy.

[0059] In this embodiment, there is no specific limitation on the preset temperature, the first preset temperature difference, and the second preset temperature difference, and they are limited according to actual conditions.

[0060] The air conditioner in this embodiment includes a shell and an outdoor heat exchanger, the shell is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet are respectively provided on two adjacent side walls of the shell, the air outlet is parallel to the first air inlet and perpendicular to the second air inlet; the outdoor heat exchanger is provided in the shell, and the outdoor heat exchanger is in contact with the external environment through the first air inlet, the second air inlet and the air outlet; obtaining a first wind speed of the ambient wind entering the air-conditioning outdoor unit includes: obtaining a third wind speed of the ambient wind entering the air-conditioning outdoor unit through the first air inlet; obtaining a fourth wind speed of the ambient wind entering the air-conditioning outdoor unit through the second air inlet; determining a first wind speed based on the third wind speed and the fourth wind speed, the first wind speed being equal to the sum of the third wind speed and the fourth wind speed.

[0061] The air conditioner includes a shell and an outdoor heat exchanger. The shell is provided with an air inlet and an air outlet. The outdoor heat exchanger is arranged inside the shell and located between the air inlet and the air outlet. The outdoor ambient air enters from the air inlet, exchanges heat in the outdoor heat exchanger, and then blows out through the air outlet. Figure 2 The shell is provided with two air inlets, namely a first air inlet and a second air inlet, the first air inlet is arranged on the first side wall of the shell, and the second air inlet is arranged on the second side wall of the shell, the first side wall and the second side wall are adjacent to each other, and the first side wall and the second side wall are perpendicular to each other; further, the air outlet is arranged on the third side wall of the shell, the third side wall is parallel to the first side wall and perpendicular to the second side wall; that is, the outdoor ambient wind can enter the outdoor heat exchanger through the first air inlet and / or the second air inlet for heat exchange and be blown out from the air outlet, or it can enter the outdoor heat exchanger from the air outlet and then be blown out from the first air inlet.

[0062] In this embodiment, a wind speed detection device is set at the first air inlet to obtain the third wind speed F3 of the ambient wind entering the air-conditioning outdoor unit, wherein the third wind speed F3 is a vector. When the direction of the ambient wind entering the air-conditioning outdoor unit through the first air inlet is the same as the air inlet direction of the first air inlet, the third wind speed is positive, that is, the third wind speed is a positive value; when the direction of the ambient wind entering the air-conditioning outdoor unit through the first air inlet is opposite to the air inlet direction of the first air inlet, the third wind speed F3 is negative, that is, the third wind speed F3 is a negative value.

[0063] In this embodiment, a wind speed detection device is set at the second air inlet to obtain the fourth wind speed F4 of the ambient wind entering the air-conditioning outdoor unit, wherein the fourth wind speed F4 is a vector. When the direction of the ambient wind entering the air-conditioning outdoor unit through the second air inlet is the same as the air inlet direction of the second air inlet, the fourth wind speed F4 is positive, that is, the fourth wind speed F4 is a positive value; when the direction of the ambient wind entering the air-conditioning outdoor unit through the second air inlet is opposite to the air inlet direction of the second air inlet, the fourth wind speed F4 is negative, that is, the fourth wind speed F4 is a negative value.

[0064] Furthermore, the first wind speed is determined by the third wind speed F3 and the fourth wind speed F4, that is, the first wind speed F1 is equal to the vector sum of the third wind speed F3 and the fourth wind speed F4, that is, F1 = F3 + F4.

[0065] Based on the above embodiment, obtaining the third wind speed of the ambient wind entering the air-conditioning outdoor unit through the first air inlet includes: obtaining the fifth wind speed of the ambient wind at the first air inlet; obtaining the length of the first air inlet and the length of the outdoor heat exchanger, and determining a first ratio of the length of the first air inlet to the length of the outdoor heat exchanger; determining the third wind speed based on the relationship between the fifth wind speed and the first ratio, the third wind speed being equal to the product of the fifth wind speed and the first ratio.

[0066] Obtain the fifth wind speed F5 of the ambient wind at the first air inlet, and understand the parameters of the ambient wind at the first air inlet, where the fifth wind speed F5 is a vector; obtain the length L1 of the outdoor heat exchanger through the measuring device, the height of the outdoor heat exchanger is consistent with the height direction of the shell, obtain the length L2 of the first air inlet, that is, the length of the outdoor heat exchanger in contact with the external environment through the first air inlet, the width of the first air inlet is the same as the width of the outdoor heat exchanger, both are the height of the shell, determine the first ratio of the length L2 of the first air inlet to the length L1 of the outdoor heat exchanger, and understand the relationship between the length of the first air inlet and the length of the outdoor heat exchanger.

[0067] Furthermore, the third wind speed F3 of the ambient air at the first air inlet entering the air conditioner outdoor unit through the first air inlet is the product of the fifth wind speed F5 and the first ratio, that is, F3=F5×L2 / L1.

[0068] Based on the above embodiment, obtaining the fourth wind speed of the ambient wind entering the air-conditioning outdoor unit through the second air inlet includes: obtaining the sixth wind speed of the ambient wind at the second air inlet; obtaining the length of the second air inlet, and determining the second ratio of the length of the second air inlet to the length of the outdoor heat exchanger; and determining the fourth wind speed based on the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio.

[0069] Obtain the sixth wind speed F6 of the ambient wind at the second air inlet, and understand the parameters of the ambient wind at the second air inlet, where the sixth wind speed F6 is a vector; obtain the length L3 of the second air inlet through the measuring device, that is, the length of the outdoor heat exchanger in contact with the external environment through the second air inlet, and the width of the second air inlet is the same as the width of the outdoor heat exchanger, both of which are the height of the shell. Determine the second ratio of the length L3 of the second air inlet to the length L1 of the outdoor heat exchanger, that is, L3 / L1, to understand the relationship between the length of the second air inlet and the length of the outdoor heat exchanger.

[0070] It is determined whether the direction of the sixth wind speed is consistent with the air inlet direction at the second air inlet, and the fourth wind speed is determined based on the relationship between the sixth wind speed F6 and the second ratio.

[0071] Furthermore, the fourth wind speed is determined based on the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio, including: when the direction of the sixth wind speed is positive, the fourth wind speed is equal to the product of the sixth wind speed and the second ratio; when the direction of the sixth wind speed is negative, the fourth wind speed is equal to 0.

[0072] When the direction of the ambient wind at the second air inlet is the same as the air inlet direction of the second air inlet, the sixth wind speed F6 is positive, and the fourth wind speed F4 of the ambient wind from the second air inlet entering the air-conditioning outdoor unit is the product of the sixth wind speed F6 and the second ratio, that is, F4 = F6 × L3 / L1.

[0073] When the direction of the ambient wind at the second air inlet is opposite to the air inlet direction of the second air inlet, the sixth wind speed F6 is negative. Since the second air inlet is perpendicular to the air outlet, the outdoor ambient wind cannot enter through the air outlet and blow out from the second air inlet. At this time, the ambient wind with the sixth wind speed does not affect the heat exchange of the outdoor heat exchanger, and the fourth wind speed is zero, that is, F4=0.

[0074] The first wind speed F1 of the ambient wind entering the air-conditioning outdoor unit is equal to the sum of the third wind speed F3 and the fourth wind speed F4, where F3 = F5 × L2 / L1, F4 = F6 × L3 / L1, that is, F1 = F5 × L2 / L1 + F6 × L3 / L1, where F1, F5, and F6 are all vectors; determine the second wind speed of the outdoor fan when it runs at the current speed in a windless state, and further, based on the current speed, the first wind speed, and the second wind speed, determine the first speed N1 of the outdoor fan when the air-conditioning outdoor fan runs at the first wind speed F1, that is, the speed of the outdoor fan to reach the first wind speed F1.

[0075] Furthermore, according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed, the opening of the throttling device is controlled, the pressure between the compressor outlet and the throttling device inlet is adjusted, the ambient wind is rationally utilized, the heat exchange efficiency of the air conditioner is improved, and energy is saved.

[0076] The air conditioner control device provided by the present invention is described below. The air conditioner control device described below and the air conditioner control method described above can be referenced to each other.

[0077] This embodiment also provides an air conditioner control device, which includes: an acquisition module for acquiring a first wind speed of ambient wind entering the air conditioner outdoor unit; also for acquiring the current speed of the outdoor fan, and determining the second wind speed of the outdoor fan running at the current speed in a windless state; a control module for determining the first speed corresponding to the outdoor fan at the first wind speed based on the current speed, the first wind speed and the second wind speed; and also for controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed.

[0078] This embodiment also provides an air conditioner, including the air conditioner control device in the above embodiment, and also including a shell and an outdoor heat exchanger, the shell is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet are respectively arranged on two adjacent side walls of the shell, the air outlet is parallel to the first air inlet and perpendicular to the second air inlet; the outdoor heat exchanger is arranged in the shell, and the outdoor heat exchanger is in contact with the external environment through the first air inlet, the second air inlet and the air outlet.

[0079] refer to Figure 2 The air conditioner includes a housing 1 and an outdoor heat exchanger. The housing is provided with an air inlet and an air outlet. The outdoor heat exchanger 5 is arranged inside the housing 1 and is located between the air inlet and the air outlet. The outdoor ambient air enters from the air inlet, exchanges heat in the outdoor heat exchanger 5, and is blown out through the air outlet. Figure 2The shell is provided with two air inlets, namely a first air inlet 2 and a second air inlet 3. The first air inlet 2 is arranged on the first side wall of the shell 1, and the second air inlet 3 is arranged on the second side wall of the shell. The first side wall and the second side wall are arranged adjacent to each other, and the first side wall and the second side wall are perpendicular to each other; further, the air outlet is arranged on the third side wall of the shell, and the third side wall is parallel to the first side wall and perpendicular to the second side wall; that is, the outdoor ambient wind can enter the outdoor heat exchanger through the first air inlet 2 and / or the second air inlet 3 for heat exchange and be blown out from the air outlet, or it can enter the outdoor heat exchanger 5 from the air outlet and then be blown out from the first air inlet 2.

[0080] Furthermore, the sum of the length L2 of the first air inlet and the length L3 of the second air inlet is equal to the sum of the lengths of the outdoor heat exchanger 5 in contact with the external environment, and the height of the outdoor heat exchanger 5 is the same as the width of the first air inlet 2 and the width of the second air inlet 3.

[0081] The air conditioner provided in this embodiment further includes an indoor heat exchanger 4, a compressor 6 and a throttling device 7. Figure 3 In the cooling mode, the outlet of the compressor 6 is connected to the inlet of the outdoor heat exchanger 5 (condenser), and the outlet of the outdoor heat exchanger 5 is connected to the inlet of the indoor heat exchanger 4 (evaporator), and a throttling device 7 is provided between the two for throttling and reducing pressure, and the outlet of the indoor heat exchanger 4 is connected to the inlet of the compressor 6.

[0082] refer to Figure 4 In the heating mode, the outlet of the compressor 6 is connected to the inlet of the indoor heat exchanger 4 (condenser), and the outlet of the indoor heat exchanger 4 is connected to the inlet of the outdoor heat exchanger 5 (evaporator), and a throttling device 7 is provided between the two for throttling and reducing pressure. The outlet of the outdoor heat exchanger 5 is connected to the inlet of the compressor 6.

[0083] Furthermore, a temperature monitoring device 8 is provided between the outdoor heat exchanger 5 and the throttling device 7. In cooling mode, the temperature monitoring device 8 is used to detect the temperature at the outlet of the outdoor heat exchanger 5; in heating mode, the temperature monitoring device 8 is used to detect the temperature at the inlet of the outdoor heat exchanger 5.

[0084] The throttling device 7 in this embodiment may be an electronic expansion valve.

[0085] Figure 5 It is a structural diagram of an electronic device, such as Figure 5As shown, the electronic device may include: a processor 510, a communications interface 520, a memory 530, and a communications bus 540, wherein the processor 510, the communications interface 520, and the memory 530 communicate with each other via the communications bus 540. The processor 510 may call logic instructions in the memory 530 to execute an air conditioner control method, which includes: obtaining a first wind speed at which ambient air enters the air conditioner outdoor unit; obtaining a current speed of the outdoor fan and determining a second wind speed at which the outdoor fan operates at the current speed in a windless state; determining a first speed corresponding to the outdoor fan at the first wind speed based on the current speed, the first wind speed, and the second wind speed; and controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed.

[0086] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0087] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the air conditioner control method provided by the above methods, which includes: obtaining a first wind speed at which ambient wind enters the air conditioner outdoor unit; obtaining a current speed of the outdoor fan, and determining a second wind speed at which the outdoor fan runs at the current speed in a windless state; based on the current speed, the first wind speed and the second wind speed, determining a first speed corresponding to the outdoor fan at the first wind speed; and controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed.

[0088] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the above-mentioned air conditioner control methods, the methods comprising: obtaining a first wind speed at which ambient wind enters an outdoor unit of the air conditioner; obtaining a current rotational speed of the outdoor fan, and determining a second wind speed at which the outdoor fan runs at the current rotational speed in a windless state; determining a first rotational speed corresponding to the outdoor fan at the first wind speed based on the current rotational speed, the first wind speed, and the second wind speed; and controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed.

[0089] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0090] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner includes a housing and an outdoor heat exchanger, the housing is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet are respectively provided on two adjacent side walls of the housing, the air outlet is parallel to the first air inlet and perpendicular to the second air inlet; The outdoor heat exchanger is disposed in the housing, and the outdoor heat exchanger is in contact with the external environment through the first air inlet, the second air inlet, and the air outlet; The air conditioner control method includes: Obtain the first wind speed of the ambient wind entering the air conditioner outdoor unit; Obtaining a current rotational speed of the outdoor fan, and determining a second wind speed of the outdoor fan at the current rotational speed in a windless state; Determining a first speed of the outdoor fan corresponding to the first wind speed based on the current speed, the first wind speed, and the second wind speed; controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first rotational speed and the current rotational speed; Acquiring a first wind speed of ambient wind entering the air conditioner outdoor unit, comprising: acquiring a third wind speed of ambient wind entering the air conditioner outdoor unit through the first air inlet; Obtaining a fourth wind speed of ambient air entering the air conditioner outdoor unit through the second air inlet; Determining the first wind speed according to the third wind speed and the fourth wind speed, wherein the first wind speed is equal to the sum of the third wind speed and the fourth wind speed; Obtaining a third wind speed of ambient air entering the air conditioner outdoor unit through the first air inlet includes: Obtaining a fifth wind speed of the ambient wind at the first air inlet; Obtaining a length of the first air inlet and a length of the outdoor heat exchanger, and determining a first ratio of the length of the first air inlet to the length of the outdoor heat exchanger; The third wind speed is determined according to the relationship between the fifth wind speed and the first ratio, and the third wind speed is equal to the product of the fifth wind speed and the first ratio.

2. The air conditioner control method according to claim 1, wherein: Controlling the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed includes: obtaining an initial opening of the throttling device; When the first wind speed is negative, controlling the throttling device to operate at a first opening, the first opening being smaller than the initial opening; When the first wind speed is in the positive direction, the opening of the throttling device is controlled according to the relationship between the first rotational speed and the current rotational speed.

3. The air conditioner control method according to claim 2, wherein: When the first wind speed is in a positive direction, controlling the opening of the throttling device according to the relationship between the first speed and the current speed includes: When the first speed is less than the current speed, controlling the throttling device to operate at a second opening, the second opening being greater than the initial opening; When the first rotational speed is greater than or equal to the current rotational speed, the throttling device is controlled to operate at a third opening degree, and the third opening degree is greater than the second opening degree.

4. The air conditioner control method according to claim 1, wherein: The air conditioner control method further includes: In cooling mode, obtain the current temperature of the outdoor heat exchanger outlet; or in heating mode, obtain the current temperature of the outdoor heat exchanger inlet; determining a temperature difference between the current temperature and a preset temperature; The opening of the throttling device is controlled according to the relationship between the temperature difference and a preset temperature difference.

5. The air conditioner control method according to claim 4, characterized in that: Controlling the opening of the throttling device according to the relationship between the temperature difference and a preset temperature difference includes: When the temperature difference is greater than a first preset temperature difference, controlling the opening of the throttling device to decrease, wherein the first preset temperature difference is greater than or equal to 0; When the temperature difference is smaller than a second preset temperature difference, the opening degree of the throttling device is controlled to increase, wherein the second preset temperature difference is smaller than the first preset temperature difference.

6. The air conditioner control method according to claim 1, wherein: Obtaining a fourth wind speed of ambient air entering the air conditioner outdoor unit through the second air inlet includes: Obtaining a sixth wind speed of the ambient wind at the second air inlet; Obtaining a length of the second air inlet, and determining a second ratio of the length of the second air inlet to the length of the outdoor heat exchanger; The fourth wind speed is determined according to the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio.

7. The air conditioner control method according to claim 6, characterized in that: Determining the fourth wind speed according to the direction of the sixth wind speed and the relationship between the sixth wind speed and the second ratio includes: When the direction of the sixth wind speed is positive, the fourth wind speed is equal to the product of the sixth wind speed and the second ratio; When the direction of the sixth wind speed is negative, the fourth wind speed is equal to 0.

8. An air conditioner control device, configured to execute the air conditioner control method according to any one of claims 1 to 7, characterized in that: include: An acquisition module, configured to acquire a first wind speed of ambient wind entering an outdoor unit of the air conditioner; It is also used to obtain the current speed of the outdoor fan and determine the second wind speed of the outdoor fan running at the current speed in a windless state; it is also used to obtain the third wind speed of the ambient air entering the air-conditioning outdoor unit through the first air inlet; it is also used to obtain the fourth wind speed of the ambient air entering the air-conditioning outdoor unit through the second air inlet; it is also used to obtain the fifth wind speed of the ambient wind at the first air inlet; it is also used to obtain the length of the first air inlet and the length of the outdoor heat exchanger, and determine a first ratio of the length of the first air inlet to the length of the outdoor heat exchanger; a control module, configured to determine a first speed of the outdoor fan corresponding to the first wind speed based on the current speed, the first wind speed, and the second wind speed; It is also used to control the opening of the throttling device to adjust the pressure between the compressor outlet and the throttling device inlet according to the direction of the first wind speed and the relationship between the first speed and the current speed; it is also used to determine the first wind speed according to the third wind speed and the fourth wind speed, the first wind speed being equal to the sum of the third wind speed and the fourth wind speed; it is also used to determine the third wind speed according to the relationship between the fifth wind speed and the first ratio, the third wind speed being equal to the product of the fifth wind speed and the first ratio.

9. An air conditioner, characterized in that: The air conditioner control device includes the air conditioner control device according to claim 8, and also includes a shell and an outdoor heat exchanger, the shell is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet and the second air inlet are respectively provided on two adjacent side walls of the shell, the air outlet is parallel to the first air inlet and perpendicular to the second air inlet; the outdoor heat exchanger is provided in the shell, and the outdoor heat exchanger is in contact with the external environment through the first air inlet, the second air inlet and the air outlet.

Images