WO2022199239A1

WO2022199239A1 - Vehicle-mounted overhead air conditioner and control method therefor, and vehicle

Info

Publication number: WO2022199239A1
Application number: PCT/CN2022/073270
Authority: WO
Inventors: 于尊才; 董元伟; 刘光朋
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-03-25
Filing date: 2022-01-21
Publication date: 2022-09-29
Also published as: CN113085475B; CN113085475A

Abstract

A control method for a vehicle-mounted overhead air conditioner. A vehicle-mounted overhead air conditioner is mounted on a vehicle, the top of the vehicle-mounted overhead air conditioner is provided with air outlets (131, 132), which correspond to outdoor heat exchangers, and opening degree adjustment apparatuses are provided at the air outlets (131, 132); the vehicle and/or the vehicle-mounted overhead air conditioner are/is provided with a speed sensor; and the vehicle-mounted overhead air conditioner comprises a controller, which is connected to the opening degree adjustment apparatuses and the speed sensor. The control method comprises: acquiring the current moving speed of a vehicle, and according to this, controlling an opening degree adjustment apparatus to adjust an opening degree of an air outlet, wherein the opening degree of the air outlet is controlled to be negatively correlated with the current moving speed of the vehicle, such that the airflow of the air outlet matches the heat exchange amount of an outdoor heat exchanger, thereby prolonging the service life of a compressor and a refrigerant circulation pipeline. The present application further relates to a vehicle-mounted overhead air conditioner and a vehicle.

Description

Vehicle-mounted overhead air conditioner and control method thereof, and vehicle

technical field

The invention belongs to the technical field of air conditioners, and specifically provides a vehicle-mounted overhead air conditioner, a control method thereof, and a vehicle.

Background technique

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 life. Air conditioners are not only widely used in people's home environment, but also widely used in vehicles driven by people, which improves the temperature comfort in the driving space of the vehicle. Considering the limited interior space of vehicles, vehicle overhead air conditioners are the main type of air conditioners for vehicles. The vehicle overhead air conditioner is installed on the roof, and its upper half is located on the upper part of the roof, and its lower half is located in the car, and the air inlet and/or air outlet of the internal circulation air duct is arranged at the bottom of the overhead air conditioner so that the vehicle can The inner air flows through the indoor heat exchanger for heat exchange and then returns to the car. The air inlet and/or air outlet of the external circulation air duct is set on the top of the vehicle overhead air conditioner, so that the outside air flows through the outdoor heat exchanger. After the heat exchange, return to the outside of the car.

In the process of cooling or heating the interior of the vehicle using the on-board overhead air conditioner, the vehicle is usually in a driving state. During the driving process of the vehicle, the top of the vehicle-mounted overhead air conditioner moves relative to the air in the environment, forming an airflow flowing toward the rear of the vehicle at the top. , the air flow of the air outlet on the top of the vehicle air conditioner does not match the heat exchange of the outdoor heat exchanger, which causes the compressor to start and stop irregularly and the pipeline pressure in the refrigerant circuit is unstable, which affects the compressor and the refrigerant circulation pipeline. service life.

Therefore, a new technical solution is needed in the art to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems in the prior art, namely to solve the problem that the air flow of the top air outlet of the vehicle-mounted overhead air conditioner does not match the heat exchange of the outdoor heat exchanger during the running of the vehicle, on the one hand, the present invention provides A control method of a vehicle-mounted overhead air conditioner, wherein the vehicle-mounted overhead air conditioner is installed on a vehicle, an air outlet corresponding to an outdoor heat exchanger is arranged on the top of the vehicle-mounted overhead air conditioner, and an air outlet is arranged at the air outlet. An opening adjustment device, the vehicle and/or the vehicle-mounted overhead air conditioner is provided with a speed sensor for detecting the moving speed of the vehicle, the vehicle-mounted overhead air conditioner includes a controller, the controller is connected with the vehicle The opening adjustment device is connected to the speed sensor, and the control method includes: acquiring the current moving speed of the vehicle; controlling the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle; Wherein, the opening of the air outlet is controlled to be negatively correlated with the current moving speed of the vehicle.

In a preferred technical solution of the above control method, the opening degree of the air outlet is set to include n opening degrees, the moving speed range of the vehicle is delimited into n speed intervals, and n of the air outlet The opening degree is in one-to-one correspondence with the n speed intervals of the vehicle, and n is a positive integer greater than or equal to 2. “Control the opening degree adjusting device to adjust the opening degree of the air outlet according to the current moving speed of the vehicle”. The steps include: judging the speed interval in which the current moving speed of the vehicle is located and determining the target opening of the air outlet; and adjusting the opening of the air outlet to the target opening.

In a preferred technical solution of the above control method, the step of “controlling the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle” includes: according to the current moving speed of the vehicle according to the formula ( 1) Calculate the target opening of the air outlet,

Adjust the opening degree of the air outlet to the target opening degree; wherein, K is the target opening degree, V is the maximum moving speed that the vehicle can achieve, and v is the current moving speed of the vehicle.

In a preferred technical solution of the above control method, the air outlet includes a first air outlet, ..., the i-th air outlet, ..., the p-th air outlet arranged in sequence from the front to the rear of the vehicle, "according to the vehicle The step of controlling the opening degree adjusting device to adjust the opening degree of the air outlet at the current moving speed includes: determining the target opening degree of the first air outlet according to the current moving speed of the vehicle; calculating according to formula (2) the target opening of the i-th air outlet,

K _i =K ₁ +(i-1)ΔK (2);

Adjust the opening degree of the first air outlet, ..., the opening degree of the i-th air outlet, ..., the opening degree of the p-th air outlet to the corresponding target opening degree; wherein, K ₁ is the first air outlet. The target opening degree of an air outlet, K _i is the target opening degree of the i-th air outlet, p is a positive integer greater than or equal to 2, i is a positive integer greater than or equal to 2 and less than or equal to p, ΔK is the preset opening degree difference.

In a preferred technical solution of the above control method, the top of the vehicle-mounted overhead air conditioner is provided with an air inlet corresponding to the outdoor heat exchanger, and the control method further includes: increasing the air intake according to the current moving speed of the vehicle The rotation speed of the fan at the air inlet; wherein, the increase in the rotation speed of the fan at the air inlet is controlled to be positively correlated with the current moving speed of the vehicle.

In a preferred technical solution of the above control method, the moving speed range of the vehicle is delimited into n speed intervals, and the fan of the air inlet is provided with n rotational speed increases, and the n rotational speed increases are related to the vehicle. There is a one-to-one correspondence between the n speed intervals, and n is a positive integer greater than or equal to 2. The step of "increasing the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle" includes: judging the current moving speed of the vehicle The speed range in which it is located is determined and the rotational speed increase amount of the fan at the air inlet is determined; the rotational speed of the fan at the air inlet is increased by the rotational speed increase amount.

In a preferred technical solution of the above control method, the step of "increasing the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle" includes: calculating the The speed increase of the fan at the air inlet,

Increase the rotational speed of the fan at the air inlet by the rotational speed increase amount; wherein, M is the rotational speed increase amount, v is the current moving speed of the vehicle, V is the maximum moving speed that the vehicle can reach, and ΔM is The preset speed increase amount.

In a preferred technical solution of the above control method, the air inlet includes a first air inlet, ..., jth air inlet, ..., qth air inlet arranged in sequence from front to rear along the vehicle, "according to the vehicle The step of increasing the rotational speed of the fan of the air inlet at the current moving speed" includes: determining the increase in the rotational speed of the fan of the first air inlet according to the current moving speed of the vehicle; calculating the first air inlet according to formula (4). j The speed increase of the fan at the air inlet,

M _j =M ₁ -(j-1)Δm (4);

Increase the rotational speed of the blower of the first air inlet,..., the rotational speed of the blower of the jth air inlet,..., the rotational speed of the blower of the qth air inlet by the corresponding rotational speed increase amount; wherein, M ₁ is the The rotational speed increase of the fan at the first air inlet, Mj is the rotational speed increase of the fan at the _jth air inlet, q is a positive integer greater than or equal to 2, j is a positive integer greater than or equal to 2 and less than or equal to q, Δm is the preset speed increase difference.

Those skilled in the art can understand that, in the technical solution of the present invention, by arranging the opening adjustment device at the top air outlet of the vehicle-mounted overhead air conditioner, the vehicle and/or the vehicle-mounted overhead air conditioner is provided with a device for detecting the vehicle. The speed sensor of the moving speed, the controller is connected with the opening adjustment device and the speed sensor, and controls the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle, so that the air outlet can be kept in the state of the vehicle at different speeds. The corresponding opening degree matches the air flow of the air outlet with the heat exchange of the outdoor heat exchanger, ensures that the compressor starts and stops regularly, and keeps the pipeline pressure in the refrigerant circuit relatively stable, thereby extending the compressor and refrigerant circulation pipes. service life of the road. Since the speed detection is relatively convenient, the opening degree of the air outlet can be more conveniently controlled during the running of the vehicle. During the running of the vehicle, the flow rate of the airflow that moves relative to the top of the vehicle-mounted overhead air conditioner is directly related to the moving speed of the vehicle, and the effect of the relative moving airflow on the airflow at the air outlet of the vehicle-mounted overhead air conditioner is directly related to its relative flow speed. , the opening of the air outlet can be adjusted according to the moving speed of the vehicle, the opening of the air outlet can be adjusted more accurately, and the airflow flow of the air outlet can be more effectively matched with the heat exchange of the outdoor heat exchanger.

In another aspect, the present invention also provides a vehicle-mounted overhead air conditioner, comprising: a memory; a processor; and a computer program, the computer program being stored in the memory and configured to be executed by the processor to The control method of the vehicle-mounted overhead air conditioner in the above technical solution is realized.

In addition, the present invention also provides a vehicle, which includes the vehicle-mounted overhead air conditioner in the above technical solution.

It should be noted that the vehicle-mounted overhead air conditioner and the vehicle have all the technical effects of the above-mentioned control method, which will not be repeated here.

Description of drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

Fig. 1 is the main step diagram of the control method of the vehicle-mounted overhead air conditioner of the present invention;

Fig. 2 is a kind of concrete step diagram of the control method of the vehicle-mounted overhead air conditioner of the present invention;

3 is a schematic top view of the vehicle-mounted overhead air conditioner according to an embodiment of the present invention 1 (the air outlet is fully opened);

FIG. 4 is a second schematic top view of the vehicle-mounted overhead air conditioner according to an embodiment of the present invention (the air outlet is partially open);

FIG. 5 is a specific step diagram of a control method for a vehicle-mounted overhead air conditioner according to an embodiment of the present invention.

List of reference numbers:

1. Shell; 11. Top plate; 12. Side plate; 131. The first air outlet; 132, The second air outlet; 14, The air inlet; 21, The first linear motor; 22, The first air plate; 31, The second linear motor; 32. The second air plate.

Detailed ways

First of all, those skilled in the art should understand that the embodiments described below are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. For example, although the damper in the opening degree adjusting device in the embodiment of the present invention adjusts the opening degree of the air outlet in a translational manner, this does not limit the protection scope of the present invention, and those skilled in the art can make it according to their needs. It can be adjusted so as to adapt to specific application occasions. For example, the damper in the opening degree adjusting device of the present invention can also adjust the opening degree of the air outlet in a pivoting manner. Obviously, the adjusted technical solution will still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "left", "right", "upper", "lower" and other terms indicating a direction or a positional relationship are based on the direction or positional relationship shown in the drawings, which are only It is for ease of description, not to indicate or imply that the device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise expressly specified and limited, the terms "installed", "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Referring to FIGS. 1 to 5 , the vehicle-mounted overhead air conditioner and the control method thereof of the present invention will be introduced. 1 is a main step diagram of the control method of the vehicle-mounted overhead air conditioner of the present invention, FIG. 2 is a specific step diagram of the control method of the vehicle-mounted overhead air conditioner of the present invention, and FIG. 3 is an embodiment of the present invention. Schematic top view 1 of the vehicle-mounted overhead air conditioner (the air outlet is fully open), FIG. 4 is the top schematic diagram 2 of the vehicle overhead air conditioner according to an embodiment of the present invention (the air outlet is partially open), and FIG. 5 is the first embodiment of the present invention. The specific step diagram of the control method of the vehicle-mounted overhead air conditioner according to the embodiment.

Based on the problem that the air flow of the top air outlet of the vehicle-mounted overhead air conditioner does not match the heat exchange of the outdoor heat exchanger during the running of the vehicle mentioned in the background art, the present invention provides a vehicle-mounted overhead air conditioner and the same. Control Method. The vehicle-mounted overhead air conditioner is installed on the vehicle, the top of the vehicle-mounted overhead air conditioner is provided with an air outlet corresponding to the outdoor heat exchanger, and the air outlet is provided with an opening adjustment device, and the vehicle and/or the vehicle-mounted overhead air conditioner is provided with a A speed sensor for detecting the moving speed of the vehicle, the vehicle-mounted overhead air conditioner includes a controller, and the controller is connected with the opening adjustment device and the speed sensor.

It can be understood by those skilled in the art that the speed sensor may be a speed sensor installed inside the instrument panel of the vehicle that will detect the speed of the output shaft of the gearbox and convert it into the moving speed of the vehicle, or a vehicle overhead air conditioner with real-time positioning information based on The speed sensor for measuring its moving speed may also include two speed sensors installed on the vehicle and the vehicle-mounted overhead air conditioner at the same time. In the case of including two speed sensors installed on the vehicle and the vehicle overhead air conditioner at the same time, the controller can obtain an average value of the vehicle moving speed according to the two measured vehicle moving speeds as the vehicle moving speed, so as to reduce the measurement error as much as possible, and In the case that one of the speed sensors fails and cannot work, the controller can still obtain the moving speed of the vehicle according to the other speed sensor. In addition, the controller is connected with the opening adjustment device and the speed sensor, and can be connected by a wired connection through a communication line, or by a wireless connection such as Bluetooth and WIFI. The opening degree adjusting device may be a device disposed at the air outlet, which can move the damper in a pivoting manner, a translation manner or other suitable manners, thereby changing the opening degree of the air outlet.

As shown in Figure 1, the control method of the vehicle-mounted overhead air conditioner of the present invention mainly comprises the following steps:

Step S100, obtaining the current moving speed of the vehicle.

The speed sensor detects the current moving speed of the vehicle in real time and sends the current moving speed of the vehicle to the controller.

Step S200 , controlling the opening degree adjusting device to adjust the opening degree of the air outlet according to the current moving speed of the vehicle, wherein the opening degree of the air outlet is controlled to be negatively correlated with the current moving speed of the vehicle.

In China, the speed limit of high-speed is 120km/h, and the moving speed of the vehicle during daily driving is usually between 0 and 120km/h. The speed range from 0 to 120 km/h can be divided into n speed intervals, and the opening of the air outlet is preset as n opening degrees corresponding to the n speed intervals. For example, it is divided into 5 speed intervals, which are (0, 20) km/h, [20, 45) km/h, [45, 70) km/h, [70, 95) km/h, [95 , 120] km/h, the opening of the air outlet is preset to 1, 4/5, 3/5, 2/5, 1/5 corresponding to the speed interval. It should be noted that the opening is the ratio of the open cross-sectional area of the air outlet to its cross-sectional area. When the controller receives the current moving speed of the vehicle from the speed sensor, it determines the speed range that the current moving speed of the vehicle falls into, so as to determine the target opening of the air outlet. For example, the current moving speed of the vehicle is 50km/h, which falls into the speed range of [45, 70)km/h, and the corresponding air outlet opening is 3/5. The controller can determine the target opening of the current air outlet as 3/5, thereby controlling the opening adjustment device to make the opening of the air outlet reach 3/5.

According to the current speed of the vehicle, the opening adjustment device adjusts the opening of the air outlet, so that the air outlet is at the corresponding opening when the vehicle is at different moving speeds, thereby reducing the relative movement of the vehicle-mounted overhead air conditioner and the air during the driving process. The influence of airflow on the airflow at the air outlet, that is, reducing the promotion effect of the negative pressure area formed above the vehicle overhead air conditioner on the air outlet during the driving process of the vehicle, so that the air flow at the air outlet can be exchanged with the heat exchange of the outdoor heat exchanger. It can ensure that the compressor starts and stops regularly, so that the pipeline pressure in the refrigerant circuit remains relatively stable, thereby prolonging the service life of the compressor and the refrigerant circulation pipeline.

It can be understood by those skilled in the art that the number of the speed intervals and the openings of the air outlet is only a specific setting method, and those skilled in the art can adjust them as needed, such as the speed interval and the air outlet opening. The number of openings may be 3, 4, 6 or more, etc. Dividing the speed range from 0 to 120km/h into multiple speed intervals is also a specific setting method, and those skilled in the art can adjust it according to the actual situation. For example, the speed range can be 0 to 100km/h, 0 to 130km /h or 0 to 140km/h, etc.

2, in another specific implementation, step S200 includes:

Step S210: Calculate the target opening of the air outlet according to the formula K=(V-v)/V according to the current moving speed of the vehicle, where K is the target opening, V is the maximum moving speed that the vehicle can reach, and v is the current moving speed of the vehicle . It can be understood that the maximum moving speed that the vehicle can reach may be the maximum moving speed that the vehicle itself is designed to reach, or the maximum speed that the vehicle is restricted to travel while traveling on the road.

Step S220, adjusting the opening of the air outlet to the target opening.

According to the formula K=(V-v)/V, the target opening of the air outlet can be calculated, and the opening of the air outlet can be adjusted to the opening degree matching the speed at any speed of the vehicle, which can reduce the speed of the vehicle more effectively. The influence of the relative airflow generated during driving on the airflow at the air outlet makes the airflow through the outdoor heat exchanger more stable, ensures that the compressor starts and stops regularly, keeps the pipeline pressure in the refrigerant circuit relatively stable, and prolongs compression. The service life of the machine and the refrigerant circulation line.

For some vehicle-mounted overhead air conditioners, the air inlet of the external circulation air duct is also set at the top, and the relative airflow generated during the driving of the vehicle affects the gas flow of the air inlet and does not match the heat exchange of the outdoor heat exchanger. .

Continuing to refer to FIG. 2 , the control method of the vehicle-mounted overhead air conditioner further includes “increasing the rotational speed of the fan at the air inlet according to the current moving speed of the vehicle, wherein the increase in the rotational speed of the fan at the air inlet is controlled to be consistent with the current moving speed of the vehicle. positive correlation" steps. Specifically, it includes the following steps:

Step S310: Calculate the rotational speed increase of the fan at the air inlet according to the formula M=v*ΔM/V according to the current moving speed of the vehicle, where M is the rotational speed increase, v is the maximum moving speed that the vehicle can reach, and ΔM is the preset rotational speed Increase the amount.

The preset rotational speed increase amount ΔM is preset, for example, the preset rotational speed increase amount ΔM may be 20 rpm, 30 rpm, or other suitable rotational speed increases.

Step S320 , increasing the rotational speed of the fan at the air inlet by the rotational speed increase amount.

With this setting, the rotational speed increase of the fan at the air inlet is calculated according to the formula M=v*ΔM/V according to the speed of the vehicle, and the rotational speed of the air inlet is increased by the rotational speed increase, so that the air intake can be increased for any speed condition. The increase in the rotational speed of the fan at the air outlet corresponds to the increase in rotational speed, thereby reducing the obstruction of the relative airflow generated during vehicle driving on the air flow at the air inlet at the top of the vehicle air conditioner, so that the air flow at the air outlet is compatible with the heat exchange of the outdoor heat exchanger. It can ensure that the compressor starts and stops regularly, so that the pipeline pressure in the refrigerant circuit remains relatively stable, thereby prolonging the service life of the compressor and the refrigerant circulation pipeline.

In another feasible implementation manner, the moving speed range of the vehicle is delineated into n speed intervals, and the fan at the air inlet is set with n rotational speed increases corresponding to the n speed intervals one-to-one. For example, the speed range from 0 to 120km/h is divided into 5 speed intervals, which are (0, 20] km/h, (20, 45] km/h, (45, 70] km/h, (70 , 95]km/h, (95, 120]km/h, the speed increase of the fan at the air inlet is set to 10 rpm, 20 rpm, 30 rpm, 40 rpm corresponding to the speed interval one-to-one. /min, 50 rpm. When the controller receives the current moving speed of the vehicle from the speed sensor, it determines the speed range that the current moving speed of the vehicle falls into, so as to determine the rotational speed increase of the fan at the air inlet and outlet. For example, The current moving speed of the vehicle is 75km/h, which falls within the speed range of (70, 95]km/h. The corresponding increase in the rotational speed of the fan at the air inlet is 40 rpm. The controller can determine the current fan at the air inlet. The speed increase of 40 rpm, so that the speed of the fan that controls the air inlet is increased by 40 rpm.

For some vehicle-mounted overhead air conditioners, a plurality of air outlets are arranged on the top of the air conditioner, and the plurality of air outlets are the first air outlet, ..., the i-th air outlet, ..., the p-th air outlet arranged in sequence from the front to the rear of the vehicle, p is a positive integer greater than or equal to 2. Step S200 of the control method for the vehicle-mounted overhead air conditioner includes the following steps:

Determine the target opening of the first air outlet according to the current moving speed of the vehicle, and calculate the target opening of the i-th air outlet according to the formula K _i =K ₁ +(i-1)ΔK;

Adjust the opening degree of the first air outlet, ..., the opening degree of the i-th air outlet, ..., the opening degree of the p-th air outlet to the corresponding target opening degree;

Wherein, K ₁ is the target opening degree of the first air outlet, K _i is the target opening degree of the ith air outlet, i is a positive integer greater than or equal to 2 and less than or equal to p, and ΔK is the preset opening degree difference. It can be understood that, the preset opening degree difference ΔK may be 1/10, 3/10, or other values.

With this arrangement, the openings of the air outlets along the front-rear direction can be set differently, so that in the case of being arranged in the front-rear direction, the influence of the relative airflow on the air flow of the air outlets arranged in the front-rear direction is different, and the front-rear direction can be controlled more accurately. The opening of the air outlet is set so that the gas flow of different air outlets matches the heat exchange of the corresponding part of the outdoor heat exchanger.

The following description will be made with reference to FIG. 3 to FIG. 5 in conjunction with a vehicle-mounted overhead air conditioner having two air outlets on the top that are arranged in the front-rear direction.

As shown in FIGS. 3 to 5 and referring to the orientation shown in FIG. 3 , the vehicle-mounted overhead air conditioner includes a casing 1 , and a first air outlet 131 and a second air outlet are distributed on the top plate 11 of the casing 1 from top to bottom. 132. An air inlet 14 is provided on the side panel 12 of the lower side of the housing 1 (the side faces the rear of the vehicle when the vehicle-mounted overhead air conditioner is installed in the vehicle). The top plate 11 is provided with a first opening adjustment device and a second opening adjustment device at the positions on the left side of the first air outlet 131 and the second air outlet 132, respectively. The first opening adjustment device and the second opening adjustment device are respectively It is used to adjust the opening of the first air outlet 131 and the second air outlet 132 . The first opening adjustment device includes a first linear motor 21 and a first air plate 22 connected to the output shaft of the first linear motor 21 . The second opening adjustment device includes a second linear motor 31 and a second air plate 32 connected to the output shaft of the second linear motor 31 .

The control method of the vehicle-mounted overhead air conditioner includes the following steps:

Step S100, obtaining the current moving speed of the vehicle.

Step S211: Calculate the target opening K ₁ of the first air outlet according to the formula K ₁ =(Vv)/V, and calculate the target opening K ₂ of the second air outlet according to the formula K ₂ =K ₁ +ΔK. Among them, V is the maximum moving speed that the vehicle can reach, v is the current moving speed of the vehicle, and ΔK is the preset opening degree difference. Step S221 , adjusting the opening degree of the first air outlet and the opening degree of the second air outlet to corresponding target opening degrees.

For example, the maximum moving speed that the vehicle can reach is 120km/h, and the preset opening difference is 1/12. When it is detected that the current moving speed of the vehicle is 60 km/h, K ₁ =(120-60)/120=1/2, K ₂ =1/2+1/12=7/12. The controller controls the first linear motor 21 and the second linear motor 22 to drive the first air plate 22 and the second air plate 32 to move to corresponding positions respectively, so that the opening of the first air outlet 131 and the second air outlet 132 The opening reaches 1/2 and 7/12.

It can be understood by those skilled in the art that the moving speed range of the vehicle can also be divided into n speed intervals, and the opening of the air outlet is set to include n opening degrees corresponding to the n speed intervals of the vehicle one-to-one, Determine the speed range in which the current moving speed of the vehicle is located, determine the target opening K ₁ of the first air outlet, and calculate the target opening of the i-th air outlet according to the formula K _i =K ₁ +(i-1)ΔK.

In another embodiment, the top of the vehicle-mounted overhead air conditioner is provided with a first air inlet, . positive integer of . The step of "increasing the rotational speed of the fan at the air inlet according to the current moving speed of the vehicle, wherein the increase in the rotational speed of the fan at the air inlet is controlled to be positively correlated with the current moving speed of the vehicle" includes:

Determine the rotational speed increase amount of the fan of the first air inlet according to the current moving speed of the vehicle;

Calculate the rotational speed increase of the fan at the jth air inlet according to the formula M _j =M ₁ -(j-1)Δm;

Increase the rotational speed of the fan at the first air inlet, ..., the rotational speed of the fan at the jth air inlet, ..., the rotational speed of the fan at the qth air inlet by the corresponding rotational speed increase;

Among them, M1 is the increase in the rotational speed of the fan at the _first air inlet, Mj is the increase in the rotational speed of the fan at the _jth air inlet, q is a positive integer greater than or equal to 2, and j is a positive integer greater than or equal to 2 and less than or equal to q Integer, Δm is the preset speed increase difference.

It can be understood that the increase in the rotational speed of the fan at the first air inlet can be calculated according to the formula M=v*ΔM/V, or the moving speed range of the vehicle can be divided into n speed intervals, and the fan at the air inlet is set to n. The rotational speed increase amounts corresponding to the n speed intervals one-to-one are determined, the speed interval in which the current moving speed of the vehicle is located is determined, and the rotational speed increase amount of the fan of the first air inlet is determined.

By setting in this way, the rotational speed of the air inlets along the front and rear directions can be set differently, so that in the case of setting in the front and rear directions, the relative airflow has different influences on the airflow flow of the air inlets arranged in the front and rear directions, and more accurately control the speed of the air inlets arranged in the front and rear directions. The rotation speed of the fan at the air inlet makes the gas flow of different air inlets match the heat exchange of the corresponding parts of the outdoor heat exchanger.

In another aspect, the present invention also provides a vehicle-mounted overhead air conditioner, comprising: a memory, a processor, and a computer program, where the computer program is stored in the memory and configured to be executed by the processor to implement any of the above embodiments The control method of the vehicle overhead air conditioner.

Those skilled in the art can understand that the memory in the above embodiments includes but is not limited to random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory or Registers, etc., processors include but are not limited to CPLD/FPGA, DSP, ARM processor, MIPS processor, etc.

In addition, the present invention also provides a vehicle including the vehicle-mounted overhead air conditioner of the above embodiment.

It can be seen from the above description that in the technical solution of the present invention, the opening degree adjusting device is controlled according to the current moving speed of the vehicle to adjust the opening degree of the air outlet, so that the air outlet can be kept at the corresponding opening when the vehicle is running at different speeds. The air flow at the air outlet matches the heat exchange of the outdoor heat exchanger to ensure that the compressor starts and stops regularly, so that the pipeline pressure in the refrigerant circuit remains relatively stable, thereby prolonging the use of the compressor and the refrigerant circulation pipeline. life.

It will be understood by those skilled in the art that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of the different embodiments are intended to be within the scope of the present invention And form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the accompanying drawings, however, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

A method for controlling a vehicle-mounted overhead air conditioner, wherein the vehicle-mounted overhead air conditioner is installed on a vehicle, wherein the top of the vehicle-mounted overhead air conditioner is provided with an air outlet corresponding to an outdoor heat exchanger, and the outlet is provided with an air outlet corresponding to an outdoor heat exchanger. An opening adjustment device is provided at the air outlet, the vehicle and/or the vehicle-mounted overhead air conditioner is provided with a speed sensor for detecting the moving speed of the vehicle, the vehicle-mounted overhead air conditioner includes a controller, the control The controller is connected with the opening adjustment device and the speed sensor, and the control method includes:

Obtain the current moving speed of the vehicle;

Control the opening degree adjusting device to adjust the opening degree of the air outlet according to the current moving speed of the vehicle;

Wherein, the opening of the air outlet is controlled to be negatively correlated with the current moving speed of the vehicle.
The control method according to claim 1, wherein the opening degree of the air outlet is set to include n opening degrees, the moving speed range of the vehicle is divided into n speed intervals, and the outlet opening is set to include n opening degrees. The n opening degrees of the tuyere correspond one-to-one with the n speed intervals of the vehicle, n is a positive integer greater than or equal to 2,

The step of "controlling the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle" includes:

Judging the speed interval in which the current moving speed of the vehicle is located and determining the target opening of the air outlet;

The opening degree of the air outlet is adjusted to the target opening degree.
The control method according to claim 1, wherein the step of "controlling the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle" comprises:

According to the current moving speed of the vehicle, the target opening of the air outlet is calculated according to formula (1),

adjusting the opening of the air outlet to the target opening;

Wherein, K is the target opening degree, V is the maximum moving speed that the vehicle can reach, and v is the current moving speed of the vehicle.
The control method according to claim 2 or 3, wherein the air outlet comprises a first air outlet, . ,

The step of "controlling the opening adjustment device to adjust the opening of the air outlet according to the current moving speed of the vehicle" includes:

determining the target opening of the first air outlet according to the current moving speed of the vehicle;

Calculate the target opening of the i-th air outlet according to formula (2),

K i =K 1 +(i-1)ΔK (2);

Adjust the opening degree of the first air outlet, ..., the opening degree of the i-th air outlet, ..., the opening degree of the p-th air outlet to the corresponding target opening degree;

Wherein, K 1 is the target opening of the first air outlet, K i is the target opening of the i-th air outlet, p is a positive integer greater than or equal to 2, and i is a positive integer greater than or equal to 2 and less than or equal to p Integer, ΔK is the preset opening difference.
The control method according to claim 1, wherein the top of the vehicle-mounted overhead air conditioner is provided with an air inlet corresponding to the outdoor heat exchanger, and the control method further comprises:

Increase the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle;

Wherein, the rotational speed increase of the fan of the air inlet is controlled to be positively correlated with the current moving speed of the vehicle.
The control method according to claim 5, characterized in that, the moving speed range of the vehicle is delineated into n speed intervals, the fan of the air inlet is set with n rotational speed increases, and the n rotational speed increases One-to-one correspondence with the n speed intervals of the vehicle, n is a positive integer greater than or equal to 2,

The step of "increasing the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle" includes:

Judging the speed interval in which the current moving speed of the vehicle is located and determining the increase in the rotational speed of the fan of the air inlet;

The rotational speed of the fan of the air inlet is increased by the rotational speed increase amount.
The control method according to claim 5, wherein the step of "increasing the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle" comprises:

According to the current moving speed of the vehicle, the rotational speed increase of the fan of the air inlet is calculated according to formula (3),

increasing the rotational speed of the fan at the air inlet by the rotational speed increase amount;

Wherein, M is the rotational speed increase amount, v is the current moving speed of the vehicle, V is the maximum moving speed that the vehicle can reach, and ΔM is the preset rotational speed increase amount.
The control method according to claim 6 or 7, wherein the air inlets comprise first air inlets, ..., jth air inlets, ..., qth air inlets, which are sequentially arranged along the vehicle from front to rear. ,

The step of "increasing the rotational speed of the fan of the air inlet according to the current moving speed of the vehicle" includes:

determining the rotational speed increase amount of the fan of the first air inlet according to the current moving speed of the vehicle;

Calculate the rotational speed increase of the fan at the jth air inlet according to formula (4),

M j =M 1 -(j-1)Δm (4);

Increase the rotational speed of the fan of the first air inlet, ..., the rotational speed of the fan of the jth air inlet, ..., the rotational speed of the fan of the qth air inlet by a corresponding rotational speed increase amount;

Wherein, M 1 is the rotational speed increase of the fan at the first air inlet, M j is the rotational speed increase of the fan at the j-th air inlet, q is a positive integer greater than or equal to 2, and j is greater than or equal to 2 and less than A positive integer equal to q, Δm is the preset speed increase difference.
A vehicle-mounted overhead air conditioner, comprising:

memory;

processor; and

A computer program, the computer program being stored in the memory and configured to be executed by the processor to implement the control method of the in-vehicle overhead air conditioner of any one of claims 1 to 8.
A vehicle, characterized in that the vehicle comprises the vehicle-mounted overhead air conditioner of claim 9 .