WO2020125165A1 - Control method for double cross-flow air conditioner - Google Patents

Abstract

A control method for a double cross-flow air conditioner. The control method for the double cross-flow air conditioner comprises: a detection step for detecting whether the air conditioner is in an open state; a control step for controlling a first cross-flow fan and a second cross-flow fan to simultaneously operate after the air conditioner is started, and controlling a rotation speed N₁ of the first cross-flow fan to be less than or equal to N_1min, and meanwhile controlling a rotation speed N₂ of the second cross-flow fan to be N_2max, wherein N_1min is a preset minimum rotation speed of the first cross-flow fan, and N_2max is a preset maximum rotation speed of the second cross-flow fan, so that a user feels strong cold air or hot air due to the fact that air having a large air volume is blown out of a lower air outlet at a refrigeration/heating startup or initial stage, and then the body feeling comfort degree of the user at the initial stage of operation is improved.

Description

Control method of double-through air conditioner

Cross-reference of related applications

This application requires priority to be submitted to the Chinese Patent Office on December 20, 2018, with the application number 201811560777.8 and the application name of the Chinese patent application titled "a control method for dual-through-flow air conditioners". reference.

Technical field

The present application belongs to the technical field of air conditioning, and in particular relates to a control method of a double-through air conditioner.

Background technique

The traditional wall-mounted heat pump air conditioner has a single air supply method, which is difficult to meet the user's comfort requirements for air supply at different stages of air conditioning operation. The indoor unit cooling/heating stage often makes the human body not feel cold or hot air, which makes the user in cooling/heating. There is a problem of somatosensory discomfort at the beginning of heat; the traditional existing air conditioner indoor unit has a long temperature rise time during cooling/heating and cannot quickly reach the indoor specified temperature. When the indoor unit is cooled, there will be blowing to the human body, resulting in poor feeling; In addition, when the indoor mechanism is hot, the hot air tends to go up, which causes the hot air in the upper part of the room to fail to fall, which leads to waste of energy and reduced human comfort. Insufficient air flow in the indoor unit results in low cooling and heat, and the room load does not meet the user's requirements.

In addition, the indoor unit has a problem of long temperature rise time during cooling/heating; when the indoor unit is cooled, it causes a problem of poor body feeling; when the indoor mechanism is hot, the hot air in the upper part of the room cannot fall to cause energy waste; the insufficient air volume of the indoor unit results in cooling 3. The heat is low, and the room load cannot meet the user requirements.

Because the air conditioner indoor unit in the prior art has a cooling/heating start-up stage, the human body often does not feel cold or hot air, which makes the user feel uncomfortable in the initial stage of cooling/heating; temperature rise time during cooling/heating When the indoor unit is cooling, there will be a blow to the human body, which results in a poor feeling. When the indoor mechanism is hot, the hot air cannot fall to the ground, which results in wasted energy and reduced human comfort. The insufficient airflow of the indoor unit results in cold and low heat, and the room load is not up to Due to the technical problems such as user requirements, this application studies and designs a control method for dual-through-flow air conditioners.

Summary of the invention

Therefore, the technical problem to be solved by the present application is to overcome the drawbacks of the prior art air conditioner indoor unit that the user has a cold feeling or poor hot feeling at the initial stage of cooling/heating, and there is a physical discomfort, thereby providing a double consistency Control method of air conditioner.

This application provides a control method for a dual-through air conditioner, which includes:

The dual cross-flow air conditioner includes a first cross-flow fan and a second cross-flow fan, and further includes a first air outlet corresponding to the first cross-flow fan and a corresponding one provided to the second cross-flow fan A second air outlet, the first air outlet is provided above the second air outlet;

Detection step, used to detect whether the air conditioner is on;

In the control step, when the air conditioner is turned on, the first cross-flow fan and the second cross-flow fan are controlled to operate at the same time, and the rotation speed of the first cross-flow fan N _{1 is} less than or equal to N _{1 min} , and simultaneously controlled The speed N ₂ of the second cross-flow fan is N _2max , where N _1min is the preset minimum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan.

In one of the embodiments, the detecting step is used to detect the operating time of the air conditioner;

A control step for controlling the first cross-flow fan and the second cross-flow fan to operate at the same time after the air conditioner is turned on for a preset time, and controlling the rotation speed N ₁ of the first cross-flow fan to N _1max , and controlling The speed N ₂ of the second cross-flow fan is N _2max , where N _1max is the preset maximum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan.

In one of the embodiments, it further includes a judging step for judging whether the relationship between the indoor ambient temperature t and the preset temperature value T ₀ satisfies the relationship |tT ₀ |<t error after the air conditioner is turned on for a preset time;

The control step is also used to continue to control the first cross-flow fan and the second cross-flow fan to operate at the same time when |tT ₀ |≥t error, and to control the rotation speed N of the first cross-flow fan ₁ is N _1max , and the speed N ₂ of controlling the second cross-flow fan is N _2max .

In one of the embodiments, the detection step is also used to detect whether the dual cross-flow air conditioner is in the cooling mode or the heating mode, and the control step is also used when |tT ₀ |<t _error holds Controlling the first cross-flow fan to stop, run at a low speed or to operate at a set speed, and/or controlling the second cross-flow fan to stop, operate at a low speed or at a set speed.

In one of the embodiments, when the double cross-flow air conditioner is in the cooling mode and tT ₀ <t _{1 error} , the second cross-flow fan is controlled to stop or run at a speed N ₂ ≤N _2min , where N _2min is the preset low operating speed of the second cross-flow fan, and the first cross-flow fan is controlled to operate at the preset speed N ₁ .

In one of the embodiments, the preset speed N _{1 of} the first cross-flow fan is _{set to} satisfy: N _1min< N _{1 setting ≤} N _1max , where N _1min is the preset running low speed of the first cross-flow fan .

In one of the embodiments, when the double-cross-flow air conditioner is in the heating mode and tT ₀ >-t _{2 error} , the first cross-flow fan is controlled to stop or run at a speed N ₁ ≤N _1min , Where N _1min is the preset low operating speed of the first cross-flow fan, and the second cross-flow fan is controlled to operate at the preset speed N ₂ .

In one of the embodiments, the preset speed N _{2 of} the second cross-flow fan is _{set to} satisfy: N _2min< N _{2 setting ≤} N _2max , where N _2min is the preset running low speed of the second cross-flow fan .

In one of the embodiments, the dual cross-flow air conditioner includes a first air guide plate provided at the first air outlet, and the control step further includes adjusting when the first air outlet exits the wind The first wind deflector opens upward to a position parallel to the air duct profile at the first air outlet.

In one of the embodiments, the dual cross-flow air conditioner includes a second air guide plate disposed at the second air outlet, and the control step further includes adjusting when the second air outlet exits the wind The second wind deflector opens downward to a position parallel to the air duct profile at the second air outlet.

The control method of a double-through air conditioner provided by the present application has the following beneficial effects:

1. In this application, after the air conditioner is turned on, the second cross-flow fan located below is operated at maximum speed, and the first cross-flow fan located above is operated at less than or equal to the minimum speed. At the stage, the user feels a strong sense of cold or hot air through the large amount of wind blown from the lower air outlet, which improves the user's physical comfort at the beginning of the operation; in cooling mode: during the startup phase, considering the higher ambient temperature, the human body is cold The demand is large, keep the speed of the down fan running at a high speed, increase the air supply of the down air channel, so that the human body can feel stronger cold air. But at the same time, the evaporator overcooling problem at the corresponding place of the upper air duct and the condensation problem of the upper air duct and the upper air duct deflector are taken into consideration. Keep the upper air duct running at a low speed to allow a breeze to blow out; in the heating mode, at the initial startup, the environment The temperature is lower, which is the greatest possible to meet the heat demand of the human body, and at the same time avoid the overheating of the evaporator at the corresponding position of the upper air duct, reduce the speed of the upper fan, and the upper air duct only maintains a slight wind state; the lower fan runs at high speed to allow the lower air duct The wind speed is greater, which allows the user to feel a strong warm wind during the startup phase;

2. In this application, after the air conditioner is operated for a preset time, the speed of the upper and lower cross-flow fans are turned to the maximum at the same time, and the maximum operating power can be driven from the air conditioner to start heating or cooling the room, thereby increasing the indoor unit air volume and cooling. Heating capacity makes the room quickly meet the requirements of the user, and achieves rapid temperature rise and fall in the room while meeting the load requirements of the room, effectively solving the technical problem of long temperature rise time during cooling/heating and unable to quickly cool or heat;

3. This application also sets up a judgment step to judge that when |tT ₀ |≥t _error , control the first cross-flow fan and the second cross-flow fan to continue to operate simultaneously, and control the first cross-flow fan The rotation speed N ₁ is N _1max , and/or the rotation speed N ₂ of the second cross-flow fan is controlled to be N _2max , after the air conditioner runs cooling or heating for a period of time, but its indoor ambient temperature has not reached the preset temperature T Within the error range of ₀ , continue to turn on the maximum operating power of the two fans to drive the heating or cooling of the room, increase the indoor unit air volume, increase the cooling heating capacity and heating cooling speed, so that the room quickly meets the requirements of the user and achieves While meeting the load demand of the room, the rapid temperature rise and fall in the room can effectively solve the technical problem that the temperature rise time during cooling/heating is long and the temperature cannot be quickly cooled or heated;

4. At the same time, when the indoor ambient temperature reaches the set temperature |tT ₀ |<t _error , the lower air outlet is controlled to not emit air or slight air during cooling, and the upper air outlet is used to realize the shower type cooling in the cooling mode. Wind, to avoid the direct blowing of cold wind, at the same time, make the indoor wide area covered by cold wind, thereby improving the indoor cooling comfort level; when the indoor ambient temperature reaches the set temperature, the upper air outlet is controlled to prevent the air from blowing or slightly out of the air when heating , Through the air outlet of the lower air outlet, to realize the carpet-type air outlet in the heating mode, so that the bottom can be covered with hot air, so that the indoor area is covered by hot air, thereby improving the indoor cooling comfort level; when the indoor temperature reaches the user setting After the temperature is adjusted according to different operating modes, the status of the upper and lower fans is adjusted. When cooling, cold air is sent from the upper air channel to achieve shower-type air supply, and during heating, the hot air flows close to the wall to realize carpet-type air supply. It truly provides users with the premise of meeting the load requirements of the room. Bring no wind feeling to enjoy the wind.

BRIEF DESCRIPTION

FIG. 1 is a control flowchart of a control method of a dual-through air conditioner of the present application;

Fig. 2 is a schematic diagram of the operation and the wind output of the dual cross-flow air conditioner of the present application with the large down fan and the small up fan turned on (including cooling mode and heating mode);

Fig. 3 is a schematic diagram of the fan operation and the wind output (including cooling mode and heating mode) of turning on the lower fan and the upper fan at the same time with high power after the preset time of the dual cross-flow air conditioner of the present application is started;

4 is a schematic diagram of fan operation and air outlet in the cooling mode after the dual cross-flow air conditioner of the present application reaches a preset temperature range;

FIG. 5 is a schematic diagram of fan operation and air outlet in the heating mode after the dual cross-flow air conditioner of the present application reaches a preset temperature range.

The reference signs in the figure are expressed as:

11. The first cross-flow fan; 12. The second cross-flow fan; 21. The first air outlet; 22. The second air outlet; 31. The first air deflector; 32. The second air deflector; 4. The evaporator ; 5. Panel.

detailed description

As shown in FIGS. 1-5, the present application provides a control method for a dual-through air conditioner, which includes:

The dual cross-flow air conditioner includes a first cross-flow fan 11 and a second cross-flow fan 12, and further includes a first air outlet 21 corresponding to the first cross-flow fan 11 and the second cross-flow A second air outlet 22 corresponding to the fan 12 is provided, and the first air outlet 21 is provided above the second air outlet 22;

Detection step, used to detect whether the air conditioner is on;

In the control step, when the air conditioner is turned on, the first cross-flow fan and the second cross-flow fan are controlled to operate at the same time, and the rotation speed of the first cross-flow fan N _{1 is} less than or equal to N _{1 min} , and simultaneously controlled The speed N ₂ of the second cross-flow fan is N _2max , where N _1min is the preset minimum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan.

This application can control the second cross-flow fan located at the bottom to operate at the maximum speed after the air conditioner is turned on, and the first cross-flow fan located at the upper portion to operate at the minimum speed or less, which can enable the user to start the cooling/heating or the initial stage The strong wind or hot air sensation is felt through the large amount of wind blown from the lower air outlet, which improves the user's physical comfort at the beginning of the operation; in the cooling mode: during the startup phase, taking into account the higher ambient temperature and the cold demand of the human body The amount is large, keep the speed of the lower fan running at a high speed, increase the air supply of the lower air channel, so that the human body can feel stronger cold air. But at the same time, the evaporator overcooling problem at the corresponding place of the upper air duct and the condensation problem of the upper air duct and the upper air duct deflector are taken into consideration. Keep the upper air duct running at a low speed to allow a breeze to blow out; in the heating mode, at the initial startup, the environment The temperature is lower, which is the greatest possible to meet the heat demand of the human body, and at the same time avoid the overheating of the evaporator at the corresponding part of the upper air duct, reduce the speed of the upper fan, and the upper air duct only maintains a slight wind state; the lower fan runs at high speed to allow the lower air duct The wind speed is greater, which allows users to feel a strong warm wind during the startup phase.

In one of the embodiments, the detecting step is used to detect the operating time of the air conditioner;

A control step for controlling the first cross-flow fan and the second cross-flow fan to operate at the same time after the air conditioner is turned on for a preset time, and controlling the rotation speed N ₁ of the first cross-flow fan to N _1max , and controlling The speed N ₂ of the second cross-flow fan is N _2max , where N _1max is the preset maximum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan.

By turning on the upper and lower cross-flow fans at the same time to the maximum after the preset time of the air conditioner operation, the maximum operating power can be driven from the air conditioner to start heating or cooling the room, increase the indoor unit air volume, and increase the cooling and heating capacity, so that The room quickly meets the requirements of the user, and achieves rapid temperature rise and fall in the room while meeting the room load requirements, effectively solving the technical problem of long temperature rise time during cooling/heating and unable to quickly cool or heat.

In one of the embodiments, it further includes a judging step for judging whether the relationship between the indoor ambient temperature t and the preset temperature value T ₀ satisfies the relationship |tT ₀ |<t _error after the air conditioner is turned on for a preset time;

The control step is also used to continue to control the first cross-flow fan and the second cross-flow fan to operate at the same time when |tT ₀ |≥t _error , and to control the rotation speed N of the first cross-flow fan ₁ is N _1max , and the speed N ₂ of controlling the second cross-flow fan is N _2max .

In this application, by setting a judgment step and judging when |tT ₀ |≥t _error , the first cross-flow fan and the second cross-flow fan continue to operate simultaneously, and the first cross-flow fan is controlled The rotation speed N ₁ is N _1max , and/or the rotation speed N ₂ of the second cross-flow fan is controlled to be N _2max , which can be after the air conditioner is operated for cooling or heating for a period of time but its indoor ambient temperature has not yet reached the preset temperature T ₀ Within the error range, continue to turn on the maximum operating power of the two fans to drive the heating or cooling of the room, increase the indoor unit air volume, increase the cooling heating capacity and heating cooling speed, so that the room quickly meets the requirements of the user, and achieves The rapid temperature rise and fall in the room while meeting the load demand of the room effectively solves the technical problem that the temperature rise time during cooling/heating is long and cannot be quickly cooled or heated. The purpose of the present application is to provide a method for controlling the comfortable air supply of a double-through indoor air conditioner. The control method is as follows: the user sets the air conditioning cooling/heating operation mode, and the upper and lower fans run at high speed at the same time, so that the ambient temperature quickly reaches the user set temperature.

In one of the embodiments, the detection step is also used to detect whether the dual cross-flow air conditioner is in the cooling mode or the heating mode, and the control step is also used to control when |tT ₀ |<t error The first cross-flow fan is stopped, low-speed operation (low-speed operation refers to running to the lowest speed of the first cross-flow fan) or at a set speed, and/or the second cross-flow fan is stopped, Low-speed operation (low-speed operation refers to operation to the lowest speed of the second cross-flow fan) or at a set speed.

This is the preferred method of the detection and control steps of this application, that is, the different operation modes of the two fans can be controlled according to different modes, and the lower fan can be turned off or operated at low speed during cooling, and there is no wind at the lower air outlet or low speed. , Will not affect the cold wind directly blowing people, improve indoor comfort, and cooling realizes air outlet from the top, realizes shower-type air outlet, increases indoor comfort, and can realize the shutdown or low-speed operation of the upper fan during heating, and the upper air outlet has no When the wind or the wind exits at a low speed, the hot air is blown out from the lower air outlet to realize the carpet-like air outlet, which increases the indoor comfort, and at the same time prevents the waste of energy due to the inability of the hot air in the upper part of the room to fall.

In one of the embodiments, when the double cross-flow air conditioner is in the cooling mode and tT ₀ <t _{1 error} , the second cross-flow fan is controlled to stop or run at a speed N ₂ ≤N _2min , where N _2min is the preset low operating speed of the second cross-flow fan, and the first cross-flow fan is controlled to operate at the preset speed N ₁ . This is the preferred control mode of the dual cross-flow air conditioner of the present application in the cooling mode, that is, when tT ₀ <t _{1 error} indicates that the indoor cooling cold wind temperature has reached the preset temperature T ₀ error (t _{1 error} ), At this time, one of the two fans can be turned off. It is not necessary for both fans to be turned on at the same time with high power. It is also to prevent the temperature from continuing to decrease and affect the indoor comfort. At this time, turn off the second cross-flow fan or adjust its speed. Below the preset operating low speed, the cold wind can be basically blown out from the first cross-flow fan above, to achieve shower-style air outlet, increase the cooling area, and improve indoor comfort.

In one of the embodiments, the preset speed N _{1 of} the first cross-flow fan is _{set to} satisfy: N _1min< N _{1 setting ≤} N _1max , where N _1min is the preset running low speed of the first cross-flow fan . This is the preferred value range of the preset speed of the first cross-flow fan of the present application, that is, N _1min< N _{1 setting ≤} N _1max can enable the first cross-flow fan to operate in a range between the minimum power and the maximum power Blow out the required cold air for cooling, realize the user's windless and comfortable cooling cold air blowing, improve the cooling comfort.

In one of the embodiments, t _{1 error} = 5°C. This is the preferred value of the error value of the present application, and the temperature range within the preset temperature of ±5°C is within the range of the temperature control range of the present application.

In one of the embodiments, when the double-cross-flow air conditioner is in the heating mode and tT ₀ >-t _{2 error} , the first cross-flow fan is controlled to stop or run at a speed N ₁ ≤N _1min , Wherein N _1min is the minimum running speed of the first cross-flow fan, and the second cross-flow fan is controlled to operate at a preset speed N ₂ . This is the preferred control mode of the dual-cross-flow air conditioner of the present application in the heating mode, that is, when tT ₀ >-t _{2 error} indicates that the indoor heating cold wind temperature has risen to the preset temperature T ₀ error (t _{2 error} ), one of the two fans can be turned off at this time. It is not necessary for both fans to be turned on at the same time with high power. It is also to prevent the temperature from continuing to rise and cause the room to overheat and affect the indoor comfort. At this time, turn off the first The cross-flow fan or its speed is adjusted to below the preset operating low speed, which can make the hot air basically blow out from the second cross-flow fan below, realize the carpet-type air outlet, increase the heating area, and improve indoor comfort.

In one of the embodiments, the preset speed N _{2 of} the second cross-flow fan is _{set to} satisfy: N _2min< N _{2 setting ≤} N _2max , where N _2min is the preset running low speed of the second cross-flow fan . This is the preferred value range of the preset speed of the second cross-flow fan of the present application, that is, N _{2min <} N _{2 setting ≤} N _2max can enable the second cross-flow fan to operate within the range between the minimum power and the maximum power The required hot air for heating is blown out to realize the user's windless and comfortable heating hot air blowing, and the heating comfort is improved.

In one of the embodiments, t _{2 error} =5°C. This is the preferred value of the error value of the present application, and the temperature range within the preset temperature of ±5°C is within the range of the temperature control range of the present application.

In one of the embodiments, the dual cross-flow air conditioner includes a first air guide plate 31 provided at the first air outlet 21, and the control step further includes when the first air outlet 21 emits air At this time, adjust the first wind deflector 31 to open upward to a position parallel to the air duct profile at the first air outlet 21 (ie, the extension line at the edge of the air outlet). This is the preferred control method of the present application when the first air deflector is provided when the air is discharged, that is, when the air is discharged from the first air outlet, the first air deflector is opened to a position parallel to the air outlet direction of the first air outlet, so It can reduce the blocking effect on the wind, increase the wind speed and area, and improve the wind effect.

In one of the embodiments, the dual cross-flow air conditioner includes a second air guide plate 32 disposed at the second air outlet 22, and the control step further includes when the second air outlet 22 emits air At this time, adjust the second air guide plate 32 to open downward to a position parallel to the air duct profile at the second air outlet 22 (ie, the extension line at the edge of the air outlet). This is the preferred control method of this application when there is a second air deflector when the air is discharged, that is, when the air is discharged from the second air outlet, the second air deflector is opened to a position parallel to the air outlet direction of the second air outlet, so It can reduce the blocking effect on the wind, increase the wind speed and area, and improve the wind effect.

In this application, by controlling the rotation speeds of the upper and lower fans in different operation stages of the air conditioner, and thereby controlling the air outlet speed of the upper and lower air ducts, it is possible to satisfy the best comfort of the human body at different operation times of the air conditioner. 1. In cooling mode: Considering the higher ambient temperature and the greater demand for cooling by the human body during the startup phase, keep the speed of the lower fan running at a high speed, increase the air supply of the lower air duct, so that the human body can feel stronger cold air . But at the same time, considering the problem of evaporator supercooling at the corresponding place of the upper air duct and the condensation of the upper air duct and the upper air duct deflector, keep the upper air duct running at a low speed to make it have a breeze. When the air conditioner has been running for a period of time, in order to achieve the purpose of rapid temperature drop in the room, the speed of the upper fan is increased to the same as that of the lower fan, and the upper and lower air vents are simultaneously cooled strongly to improve the temperature drop effect of the whole machine. Because the air-conditioning directly blows people for a long time, it will cause discomfort. When the room temperature is lowered to the set temperature, reduce the speed of the down fan to the state of slight wind, to achieve the effect of no air feeling under the air outlet. The air speed of the air outlet is reduced. To further increase the wind speed of the upper air outlet, this control method can realize the air supply of the lower air outlet without wind sense and the air supply of the upper air outlet shower room. This cooling control mode not only solves the problem of cold wind blowing directly, but also guarantees the temperature drop rate of the whole machine, while avoiding the overcooling of the lower half of the evaporator of the lower air duct and solving the condensation problem of the lower air duct and the lower air duct deflector. 2. In the heating mode, the initial ambient temperature is low, which is the maximum possible to meet the heat demand of the human body, and at the same time avoid the overheating of the evaporator at the corresponding place of the upper air duct, reduce the speed of the upper fan, and the upper air duct only maintains a slight wind Status: The high-speed operation of the downdraft fan makes the downdraft wind speed greater, allowing users to feel a strong warm air during the startup phase. When the air conditioner runs for a period of time, increase the updraft fan speed to the same as the downdraft fan, and the up and down vents are strong Heating, to achieve the purpose of rapid temperature rise in the room. When the room temperature reaches the set temperature, reduce the speed of the upper fan to a slight wind state to avoid overheating of the evaporator corresponding to the upper air channel, and at the same time, the wind speed of the lower air outlet will be further increased, so that the warm air is mainly blown out from the lower air outlet and sent directly to the ground , Carpet-type air supply, to make the temperature of the entire room more uniform.

1) Cooling mode

During the start-up phase, the upper and lower air vents are opened, the lower fan runs at high speed, and the upper fan runs at low speed, which makes the lower air duct wind speed greater, allowing users to feel strong cold wind during the start-up phase. The upper air duct only maintains a slight wind state to avoid upwind The problem of overcooling of the evaporator at the corresponding channel and the problem of condensation on the upper air duct and the upper air deflector; when entering the room, the user is often sweating, so that the user can feel the maximum cooling pleasure brought by the direct blowing of cold air. If the air volume is smaller when the upper and lower motors are turned on at the same time than when the motor is turned on and down, it can not meet the rapid cooling of the human body by direct cold air blowing.

After running for a period of time, increase the speed of the upper fan to the same as that of the lower fan, and the upper and lower air vents are simultaneously cooled strongly to improve the temperature drop effect of the whole machine;

When the room temperature reaches the set temperature, reduce the speed of the down-draft fan to a slight air-out state to achieve the effect of no wind-sensing air supply at the down-air vent. Lowering the air speed at the down-air vent will further increase the wind speed at the up-air vent and let the cold wind blow out mainly from the up-air vent. Achieve shower air supply. This control method can realize the windless air supply of the lower air outlet and the air supply of the shower room of the upper air outlet, solve the problem of direct cold air blowing people and ensure the temperature drop rate of the whole machine, while avoiding the problem of excessive cooling of the evaporator at the corresponding place of the lower air duct and The problem of dew condensation in the downwind duct and downwind outlet.

Note: The upper and lower air deflectors are open during the whole process.

2) Heating mode

During the start-up phase, the upper and lower air ducts are opened, the lower fan runs at high speed, and the upper fan runs at low speed, which makes the lower air duct wind speed greater, allowing users to feel strong warm air during the startup phase. The upper air duct only maintains a slight wind state to avoid The evaporator at the corresponding part of the upper duct is overheated; when entering the room, users often have a very high demand for heat, so that users can feel the maximum heating pleasure brought by the direct blowing of hot air. If the air volume is smaller when the upper and lower motors are turned on at the same time than when the motor is turned on and off, it is not possible to satisfy the comfort of the human body caused by the direct blow of hot air.

Run for a period of time, increase the speed of the upper fan to the same as that of the lower fan, and the upper and lower air outlets simultaneously heat strongly to improve the temperature rise effect of the whole machine;

When the room temperature reaches the set temperature, reduce the speed of the upper fan to a slight wind state to avoid overheating of the evaporator corresponding to the upper air channel, and at the same time, the wind speed of the lower air outlet will be further increased, so that the warm air is mainly blown out from the lower air outlet and sent directly to the ground , To achieve carpet air supply, so that the temperature of the entire room is more uniform.

The above are only the preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application should be included in the protection of this application Within range. The above is only the preferred embodiment of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present application, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the scope of protection of this application.

Claims (10)

A control method of a double-through-flow air conditioner, characterized in that it includes: The dual cross-flow air conditioner includes a first cross-flow fan (11) and a second cross-flow fan (12), and further includes a first air outlet (21) provided corresponding to the first cross-flow fan (11) And a second air outlet (22) provided corresponding to the second cross-flow fan (12), the first air outlet (21) is provided above the second air outlet (22); Detection step, used to detect whether the air conditioner is on; In the control step, when the air conditioner is turned on, the first cross-flow fan and the second cross-flow fan are controlled to operate at the same time, and the rotation speed of the first cross-flow fan N _{1 is} less than or equal to N _{1 min} , and simultaneously controlled The speed N ₂ of the second cross-flow fan is N _2max , where N _1min is the preset minimum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan. The control method according to claim 1, characterized in that: The detection step is used to detect the operating time of the air conditioner; A control step for controlling the first cross-flow fan and the second cross-flow fan to operate at the same time after the air conditioner is turned on for a preset time, and controlling the rotation speed N ₁ of the first cross-flow fan to N _1max , and controlling The speed N ₂ of the second cross-flow fan is N _2max , where N _1max is the preset maximum speed of the first cross-flow fan, and N _2max is the preset maximum speed of the second cross-flow fan. The control method according to claim 2, characterized in that: It also includes a judgment step for judging whether the relationship between the indoor ambient temperature t and the preset temperature value T ₀ satisfies the relationship |tT ₀ |<t _error when the air conditioner is turned on for a preset time; The control step is also used to continue to control the first cross-flow fan and the second cross-flow fan to operate at the same time when |tT ₀ |≥t _error , and to control the rotation speed N of the first cross-flow fan ₁ is N _1max , and the speed N ₂ of controlling the second cross-flow fan is N _2max . The control method according to any one of claims 1-3, characterized in that: The detection step is also used to detect whether the dual cross-flow air conditioner is in the cooling mode or the heating mode, and the control step is also used to control the first cross flow when |tT ₀ |<t _{error is} established The fan is stopped, running at a low speed or running at a set speed, and/or controlling the second cross flow fan to be stopped, running at a low speed or running at a set speed. The control method according to claim 4, characterized in that: When the dual cross-flow air conditioner is in the cooling mode and tT ₀ <t _{1 error} , the second cross-flow fan is controlled to stop or run at a speed N ₂ ≤N _2min , where N _2min is the second cross-flow fan The preset running speed is low, and the first cross-flow fan is controlled to operate at a preset speed N ₁ . The control method according to claim 5, characterized in that: The preset speed N _{1 of} the first cross-flow blower satisfies: N _1min< N _{1 setting ≤} N _1max , where N _1min is the preset running low speed of the first cross-flow blower. The control method according to claim 4, characterized in that: When the dual cross-flow air conditioner is in the heating mode and tT ₀ >-t _{2 error} , the first cross-flow fan is controlled to stop or run at a speed N ₁ ≤N _1min , where N _1min is the first The preset running speed of the flow fan is low, and the second cross flow fan is controlled to operate at a preset speed N ₂ . The control method according to claim 7, characterized in that: The _setting of the preset speed N _{2 of} the second cross-flow fan satisfies: N _2min< N _{2 setting ≤} N _2max , where N _2min is the preset running low speed of the second cross-flow fan. The control method according to any one of claims 1-8, characterized in that: The dual cross-flow air conditioner includes a first air deflector (31) provided at the first air outlet (21), and the control step further includes when the first air outlet (21) emits air 1. Adjust the first air guide plate (31) to open upward to a position parallel to the air duct profile at the first air outlet (21). The control method according to any one of claims 1-9, characterized in that: The dual cross-flow air conditioner includes a second air deflector (32) disposed at the second air outlet (22), and the control step further includes when the second air outlet (22) is out of air 1. Adjust the second air guide plate (32) to open downward to a position parallel to the air duct profile at the second air outlet (22).

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