Variable soft-blow control method

Abstract

The present application relates to the field of air conditioner control, in order to realize the balance between the soft wind effect, condensation problem and room cooling load, provide variable soft wind control method: according to the set temperature, room temperature and temperature threshold determine the swing position, and according to the indoor relative humidity φir Determine the indoor unit speed and the maximum operating frequency of the compressor, can be in the cooling soft wind function is opened, through the reasonable matching indoor unit speed, swing angle, compressor frequency and with the change process of room temperature, indoor relative humidity during cooling dynamic adjustment three operating parameters, to realize the reasonable balance of cooling load, comfortable air supply and condensation under the soft wind function, improve the comfort and satisfaction of consumers.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control, specifically a variable soft wind control method. Background Technology

[0002] Currently, in the cooling mode of inverter air conditioners, the air delivery process aims for a windless feel, primarily using perforated blades. In soft wind mode, the blades are completely closed, and air is only delivered through small holes in the blades, thereby reducing air speed and volume to achieve a soft wind effect. However, this approach also has direct drawbacks, such as:

[0003] Condensation problem. In high temperature and high humidity environments, insufficient air volume will cause the evaporation temperature to drop, making the outlet air temperature much lower than the dew point temperature. This results in a large amount of condensation near the air outlet. With prolonged use, the condensation may even drip or slide onto the ground, causing market complaints.

[0004] Issues with performance. In this gentle breeze mode, the louvers are closed, the airflow from the small holes is greatly reduced, and the operating frequency is automatically reduced to prevent the evaporator from freezing and frostling due to excessively low evaporation temperature. With both airflow and frequency reduced, the cooling capacity of the inverter air conditioner will be significantly reduced, causing the room temperature to rise continuously and failing to meet the consumer's set temperature requirements, which will also lead to complaints.

[0005] Therefore, existing gentle breeze control solutions do not achieve a reasonable balance in terms of gentle breeze effect, condensation, and cooling capacity. Summary of the Invention

[0006] To achieve a balance between gentle breeze effect, condensation problem, and room cooling load, this application provides a variable gentle breeze control method.

[0007] The technical solution adopted by the present invention to solve the above problems is:

[0008] Variable soft wind control methods include:

[0009] Step 1: The user sets the set temperature Ts and turns on the cooling gentle breeze function;

[0010] Step 2: Real-time monitoring of room temperature (Tir) and indoor relative humidity (φir);

[0011] Step 3: Determine the position of the oscillating blades based on the set temperature Ts, room temperature Tir, and temperature threshold A, and determine the indoor unit fan speed and the maximum operating frequency of the compressor based on the indoor relative humidity φir.

[0012] Furthermore, the temperature threshold A ranges from 26 to 30°C.

[0013] Furthermore, step 3 specifically includes:

[0014] If the room temperature Tir > temperature threshold A > set temperature Ts, then adjust the louvers to the first angle. At this time, if the indoor relative humidity φir ≥ humidity threshold, then the indoor unit fan speed is C and the compressor maximum operating frequency is D; otherwise, the indoor unit fan speed is C and the compressor maximum operating frequency is: when the indoor relative humidity φir decreases by E, the maximum operating frequency increases by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed.

[0015] If the temperature threshold A ≥ room temperature Tir > set temperature Ts, then adjust the louvers to the second angle. At this time, if the indoor relative humidity φir ≥ humidity threshold, then the indoor unit fan speed is H and the compressor maximum operating frequency is I; otherwise, the indoor unit fan speed is H and the compressor maximum operating frequency is: when the indoor relative humidity φir decreases by E, the maximum operating frequency increases by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed.

[0016] If the room temperature Tir ≥ the set temperature Ts ≥ the temperature threshold A, the oscillating blades will immediately close completely. After J minutes, the oscillating blades will be adjusted to the third angle. At this time, if the indoor relative humidity φir ≥ the humidity threshold, the indoor unit fan speed will be L and the compressor maximum operating frequency will be M. Otherwise, the indoor unit fan speed will be L and the compressor maximum operating frequency will be: when the indoor relative humidity φir decreases by E, the maximum operating frequency will increase by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed.

[0017] Otherwise, it will enter the air supply mode.

[0018] Furthermore, the first angle is B, when BG×|A-Tir|≥0; the second angle is BG×|A-Tir|, when BG×|A-Tir|<0, the second angle is 0°; the third angle is 0+K×|room temperature Tir-set temperature Ts|, where G is a coefficient with a value range of 0.5~3; and K is a coefficient with a value range of 1~5.

[0019] Furthermore, the first angle B ranges from 30° to 60°.

[0020] Furthermore, the humidity threshold is set to 75%.

[0021] Furthermore, C is high speed or above; D is 40-50Hz; E is 0.5-3%; F is 0.5-1Hz; H is medium speed or above; I is 30-40Hz; J is 0.5-3 minutes; L is low speed or above; and M is 10-20Hz.

[0022] The advantages of this invention compared to the prior art are as follows: the position of the louver is determined based on the set temperature Ts, room temperature Tir, and temperature threshold A, and the indoor unit fan speed and compressor maximum operating frequency are determined based on the indoor relative humidity φir. When the cooling soft wind function is turned on, the indoor unit fan speed, louver angle, compressor frequency, and the dynamic adjustment of the three operating parameters as the room temperature and indoor relative humidity change during cooling can achieve a reasonable balance between cooling load, comfortable air supply, and condensation under the soft wind function, thereby improving consumer comfort and satisfaction. Attached Figure Description

[0023] Figure 1 This is a flowchart of a variable soft wind control method. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] When the cooling gentle breeze function is running, it is necessary to fully balance the room load, air supply comfort, and condensation risk. When the load is low, the frequency needs to be reduced appropriately to save energy and avoid the risk of condensation. When the indoor humidity is high, it is also necessary to control the indoor unit fan speed and compressor frequency to meet the cooling needs while maximizing the evaporation temperature and reducing condensation. In the gentle breeze mode, the fan speed and air volume can be reduced by adjusting the oscillating blade angle to achieve a comfortable, windless effect.

[0026] Based on this, such as Figure 1 As shown, this application provides a variable soft wind control method, including:

[0027] Step 1: The user sets the set temperature Ts and turns on the cooling gentle breeze function. The cooling gentle breeze function means turning on the gentle breeze in cooling mode.

[0028] Step 2: Real-time monitoring of room temperature (Tir) and indoor relative humidity (φir);

[0029] Step 3: Determine the initial position of the swing blades based on the set temperature Ts, room temperature Tir, and temperature threshold A, and determine the indoor unit fan speed and the maximum operating frequency of the compressor based on the indoor relative humidity φir. The temperature threshold is built into the air conditioning system and is used to measure the size of the air conditioning cooling load. It is generally taken as 26 to 30°C, preferably 28°C.

[0030] Specifically, step 3 is as follows:

[0031] If the room temperature Tir > temperature threshold A > set temperature Ts, the indoor ambient temperature is high and the air conditioning cooling load is large. Therefore, the louvers are adjusted to the first angle, which corresponds to a larger air outlet area and a larger air volume, allowing the system to input a larger cooling capacity to meet the room's cooling load requirements. Then, it is determined that if the indoor relative humidity φir ≥ humidity threshold, the indoor unit fan speed is C and the compressor maximum frequency is D. Otherwise, the indoor unit fan speed is C, and the compressor maximum operating frequency is: for every E decrease in indoor relative humidity φir, the maximum operating frequency increases by F until the maximum operating frequency D reaches the operating frequency threshold allowed by the current fan speed.

[0032] If the temperature threshold A ≥ room temperature Tir > set temperature Ts, the indoor ambient temperature is lower than the threshold, and the air conditioning cooling load decreases. Therefore, the louvers are adjusted to the second angle, which corresponds to a smaller air outlet area and a smaller air volume. The cooling capacity input to the system also decreases accordingly to meet the room's cooling load requirements. Then, it is determined that if the indoor relative humidity φir ≥ the humidity threshold, the indoor unit fan speed is H and the compressor's maximum frequency is I. Otherwise, the indoor unit fan speed is H, and the compressor's maximum operating frequency is: for every E decrease in indoor relative humidity φir, the maximum operating frequency increases by F until the maximum operating frequency I reaches the operating frequency threshold allowed by the current fan speed.

[0033] If the room temperature Tir ≥ the set temperature Ts ≥ the temperature threshold A, the indoor ambient temperature is higher than the threshold, but the set temperature is also higher than the threshold, indicating that the user's cooling load requirement is very low. Therefore, the oscillator is immediately and completely closed. After J minutes, the oscillator is adjusted to the third angle, which corresponds to the smallest air outlet area and the smallest air volume. Only a very low cooling capacity is needed to meet the room's cooling load, while avoiding condensation. Then, it is determined that if the indoor relative humidity φir ≥ the humidity threshold, the indoor unit fan speed is L and the compressor's maximum frequency is M. Otherwise, the indoor unit fan speed is L, and the compressor's maximum operating frequency is: for every E decrease in indoor relative humidity φir, the maximum operating frequency increases by F until the maximum operating frequency M reaches the operating frequency threshold allowed by the current fan speed.

[0034] Otherwise, it will enter the air supply mode.

[0035] In this embodiment, the first angle is B, which is 30 to 60°, preferably 45°. When BG×|A-Tir|≥0, the second angle is BG×|A-Tir|. When BG×|A-Tir|<0, the second angle is 0°. The third angle is 0+K×|room temperature Tir-set temperature Ts|, where G is a coefficient, ranging from 0.5 to 3, preferably 1; and K is a coefficient, ranging from 1 to 5, preferably 3.

[0036] In this embodiment, the humidity threshold is 75%, C is high speed or above, with high speed preferred; D is 40-50Hz, with 45Hz preferred; E is 0.5-3%, with 1% preferred; F is 0.5-1Hz, with 1Hz preferred; H is medium speed or above, with medium speed preferred; I is 30-40Hz, with 35Hz preferred; J is 0.5-3 minutes, with 1 minute preferred; L is low speed or above, with low speed preferred; M is 10-20Hz, with 15Hz preferred.

[0037] It should be noted that air conditioner fan speed settings generally have five levels: strong, high, medium, low, and low.

Claims

1. A variable soft wind control method, characterized in that, include: Step 1: The user sets the set temperature Ts and turns on the cooling gentle breeze function; Step 2: Real-time monitoring of room temperature (Tir) and indoor relative humidity (φir); Step 3: Determine the louver position based on the set temperature Ts, room temperature Tir, and temperature threshold A, and determine the indoor unit fan speed and compressor maximum operating frequency based on the indoor relative humidity φir. If the room temperature Tir > temperature threshold A > set temperature Ts, then adjust the louvers to the first angle. At this time, if the indoor relative humidity φir ≥ humidity threshold, then the indoor unit fan speed is C and the compressor maximum operating frequency is D; otherwise, the indoor unit fan speed is C and the compressor maximum operating frequency is: when the indoor relative humidity φir decreases by E, the maximum operating frequency increases by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed. If the temperature threshold A ≥ room temperature Tir > set temperature Ts, then adjust the louvers to the second angle. At this time, if the indoor relative humidity φir ≥ humidity threshold, then the indoor unit fan speed is H and the compressor maximum operating frequency is I; otherwise, the indoor unit fan speed is H and the compressor maximum operating frequency is: when the indoor relative humidity φir decreases by E, the maximum operating frequency increases by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed. If the room temperature Tir ≥ the set temperature Ts ≥ the temperature threshold A, the oscillating blades will immediately close completely. After J minutes, the oscillating blades will be adjusted to the third angle. At this time, if the indoor relative humidity φir ≥ the humidity threshold, the indoor unit fan speed will be L and the compressor maximum operating frequency will be M. Otherwise, the indoor unit fan speed will be L and the compressor maximum operating frequency will be: when the indoor relative humidity φir decreases by E, the maximum operating frequency will increase by F until the maximum operating frequency reaches the operating frequency threshold allowed by the current fan speed. Otherwise, it will enter the air supply mode; The first angle is B, when B - G × |A - Tir| ≥ 0; the second angle is B - G × |A - Tir|, when B - G × |A - Tir| < 0, the second angle is 0°; the third angle is 0 + K × |room temperature Tir - set temperature Ts|, where G is a coefficient with a value range of 0.5 to 3; K is a coefficient with a value range of 1 to 5. C is high speed or above; D is 40-50Hz; E is 0.5-3%; F is 0.5-1Hz; H is medium speed or above; I is 30-40Hz; J is 0.5-3 minutes; L is low speed or above; M is 10-20Hz.

2. The variable gentle wind control method according to claim 1, characterized in that, The temperature threshold A ranges from 26 to 30°C.

3. The variable gentle wind control method according to claim 1, characterized in that, The first angle B ranges from 30° to 60°.

4. The variable gentle wind control method according to claim 1, characterized in that, The humidity threshold is set to 75%.

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