CN114312210A - Vehicle-mounted air conditioning unit and control method thereof - Google Patents
Vehicle-mounted air conditioning unit and control method thereof Download PDFInfo
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- CN114312210A CN114312210A CN202111486675.8A CN202111486675A CN114312210A CN 114312210 A CN114312210 A CN 114312210A CN 202111486675 A CN202111486675 A CN 202111486675A CN 114312210 A CN114312210 A CN 114312210A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000006073 displacement reaction Methods 0.000 claims abstract description 50
- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000003507 refrigerant Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 abstract description 17
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
- B60H1/26—Ventilating openings in vehicle exterior; Ducts for conveying ventilating air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/34—Nozzles; Air-diffusers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to the technical field of vehicle-mounted air conditioners, and particularly provides a vehicle-mounted air conditioning unit and a control method thereof, aiming at solving the problems of high energy consumption and short service life of a vehicle-mounted battery of the conventional vehicle-mounted air conditioning unit. Therefore, the refrigerant circulation loop of the vehicle-mounted air conditioning unit is provided with the condenser, the throttling component, the evaporator and the compressor, the vehicle-mounted air conditioning unit comprises a shell and a vehicle-mounted fan, the shell is provided with an air outlet, a first air inlet and a second air inlet, the second air inlet is positioned on an airflow path in the vehicle running process, the air outlet is communicated with one end of a heat exchange channel in the shell, the first air inlet and the second air inlet are arranged to be capable of being alternatively communicated with the other end of the heat exchange channel, and based on the situation, the communication state of the first air inlet and the second air inlet and the heat exchange channel is controlled according to the displacement speed of the vehicle, so that air passing through the shell in the vehicle running process is fully utilized to exchange heat for the condenser, the energy consumption is reduced, and the service life of a vehicle-mounted battery is ensured.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted air conditioners, and particularly provides a vehicle-mounted air conditioning unit and a control method thereof.
Background
Most of the existing vehicles are provided with vehicle-mounted air conditioning units to adjust the temperature and humidity in the vehicles, provide more comfortable riding environment for users, and further reduce the fatigue strength of drivers and ensure the driving safety. However, when the user uses the vehicle-mounted air conditioning unit during driving, the vehicle-mounted battery is in a non-continuous discharging and charging state, and the service life of the vehicle-mounted battery is easily shortened. In addition, the current vehicle-mounted air conditioner still can lead to the energy consumption of vehicle too high because operating power is great, and these all bring not good use experience for the user.
Accordingly, there is a need in the art for a new on-board air conditioning unit and a control method thereof to solve the above problems.
Disclosure of Invention
The invention aims to solve the technical problems, namely, the problems of high energy consumption and short service life of a vehicle-mounted battery of the conventional vehicle-mounted air conditioning unit are solved.
In a first aspect, the present invention provides a method for controlling a vehicle-mounted air conditioning unit, the vehicle-mounted air conditioning unit includes an internal vehicle unit, an external vehicle unit, and a refrigerant circulation loop disposed between the internal vehicle unit and the external vehicle unit, the external vehicle unit includes a casing and an external vehicle blower, a heat exchange channel is formed in the casing, a condenser, a throttling member, an evaporator, and a compressor are sequentially disposed on the refrigerant circulation loop, the evaporator is located in the internal vehicle unit, the condenser and the external vehicle blower are disposed in the heat exchange channel, the casing is further provided with an air outlet, a first air inlet, and a second air inlet, the air outlet is communicated with one end of the heat exchange channel, the second air inlet is located in an air flow path during vehicle traveling, and the first air inlet and the second air inlet are configured to be capable of being selectively communicated with the other end of the heat exchange channel, the control method comprises the following steps: acquiring the displacement speed of the vehicle; and controlling the communication state of the first air inlet, the second air inlet and the heat exchange channel according to the displacement speed of the vehicle.
In a preferred embodiment of the above control method, the step of controlling the communication state between the first air intake port and the heat exchange passage and the communication state between the second air intake port and the heat exchange passage according to the displacement speed of the vehicle includes: and if the displacement speed of the vehicle is greater than or equal to the preset displacement speed, controlling the second air inlet to be communicated with the heat exchange channel.
In a preferred embodiment of the above control method, the control method further includes: and under the condition that the second air inlet is communicated with the heat exchange channel, controlling the fan outside the vehicle to stop running.
In a preferable embodiment of the above control method, the step of controlling the communication state between the first air intake port and the heat exchange passage and the communication state between the second air intake port and the heat exchange passage according to the displacement speed of the vehicle further includes: and if the displacement speed of the vehicle is less than the preset displacement speed, controlling the first air inlet to be communicated with the heat exchange channel.
In a preferred embodiment of the above control method, the control method further includes: and under the condition that the first air inlet is communicated with the heat exchange channel, controlling the fan outside the vehicle to operate.
In a preferable technical scheme of the control method, the preset displacement speed is 20 km/h.
In a preferred embodiment of the above control method, the control method further includes: under the condition that the second air inlet is communicated with the heat exchange channel, the temperature of the evaporator and the change condition of the temperature in the vehicle are obtained; and selectively controlling the first air inlet to be communicated with the heat exchange channel according to the temperature of the evaporator and the change condition of the temperature in the vehicle.
In a preferred technical solution of the above control method, "selectively controlling the first air inlet to communicate with the heat exchange channel according to a change condition of the temperature of the evaporator and the temperature in the vehicle" specifically includes: when the vehicle-mounted air conditioning unit operates in a refrigeration working condition, if the temperature of the evaporator is higher than a preset refrigeration temperature and/or the falling amplitude of the temperature in the vehicle does not reach the preset falling amplitude, controlling the first air inlet to be communicated with the heat exchange channel; and when the vehicle-mounted air conditioning unit operates in a heating working condition, if the temperature of the evaporator is lower than a preset heating temperature and/or the rise amplitude of the temperature in the vehicle does not reach the preset rise amplitude, controlling the first air inlet to be communicated with the heat exchange channel.
In a preferred technical solution of the above control method, in a case that the second air inlet is communicated with the heat exchange channel, the control method further includes: when the vehicle-mounted air conditioning unit operates in a refrigeration working condition, if the temperature of the evaporator is less than or equal to the preset refrigeration temperature and the falling amplitude of the temperature in the vehicle reaches the preset falling amplitude, the second air inlet is maintained to be communicated with the heat exchange channel; and when the vehicle-mounted air conditioning unit operates in a heating working condition, if the temperature of the evaporator is greater than or equal to the preset heating temperature and the rise amplitude of the temperature in the vehicle reaches the preset rise amplitude, the second air inlet is communicated with the heat exchange channel.
In another aspect, the present invention further provides an on-board air conditioning unit, where the on-board air conditioning unit includes a controller, and the controller is capable of executing the control method in any one of the above preferred technical solutions.
Under the condition of adopting the technical scheme, the vehicle-mounted air conditioning unit selectively enables the first air inlet and the second air inlet to be communicated with the heat exchange channel according to the displacement speed of the vehicle, ensures the running stability of the vehicle-mounted air conditioning unit, and simultaneously can fully utilize the naturally flowing air passing through the shell in the running process of the vehicle to exchange heat with the condenser, so that the use frequency of the fan outside the vehicle is reduced, and further, the charge and discharge times of the vehicle-mounted battery can be effectively reduced, the purposes of protecting the vehicle-mounted battery and prolonging the service life are achieved, and the energy consumption of the vehicle-mounted air conditioning unit can be effectively reduced.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of an on-board air conditioning unit of the present invention;
fig. 2 is a schematic structural view of an outboard motor of the present invention;
FIG. 3 is a schematic structural view of the outboard engine of the present invention in an active supply mode;
FIG. 4 is a schematic view of the exterior vehicle of the present invention in a natural blowing mode;
FIG. 5 is a flow chart of the main steps of the control method of the present invention;
FIG. 6 is a flowchart illustrating the detailed steps of a preferred embodiment of the control method of the present invention;
reference numerals:
1. an outboard motor;
11. a housing; 111. an air outlet; 112. a first air inlet; 113. a second air inlet;
12. an external fan;
13. a shielding member; 131. a rotating member; 132. a first bonding structure; 133. a second bonding structure; 134. a locking member;
14. a temperature sensor; 15. a controller; 16. a baffle plate;
2. a refrigerant circulation circuit;
21. a condenser; 22. a throttling member; 23. an evaporator; 24. a compressor; 25. and a four-way valve.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the present invention does not limit the specific application objects of the vehicle-mounted air conditioning unit, and the present invention may be applied to oil vehicles, electric vehicles, and hybrid vehicles with plug-in and plug-in, and technicians may set the application objects of the vehicle-mounted air conditioning unit according to actual use requirements, and such specific application objects may be changed without departing from the principle of the present invention, and still fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "in communication with" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Although the steps of the compressor frequency control method of the present invention are described herein in a particular order, the order is not intended to be limiting and those skilled in the art can perform the steps in a different order without departing from the basic principles of the present invention.
Referring first to fig. 1 and 2, fig. 1 is a schematic structural view of a vehicle air conditioning unit according to the present invention, and fig. 2 is a schematic structural view of an outdoor unit according to the present invention. As shown in fig. 1 and 2, the vehicle-mounted air conditioning unit of the present invention includes an internal vehicle unit (not shown), an external vehicle unit 1, and a refrigerant circulation circuit 2 disposed between the internal vehicle unit and the external vehicle unit 1, where the external vehicle unit 1 includes a casing 11 and an external vehicle blower 12, a heat exchange channel is formed in the casing 11, a condenser 21, a throttle member 22, an evaporator 23, a compressor 24, and a four-way valve 25 are sequentially disposed on the refrigerant circulation circuit 2, the evaporator 23 is located in the internal vehicle unit, and the condenser 21 and the external vehicle blower 12 are disposed in the heat exchange channel. The casing 11 is further provided with an air outlet 111, a first air inlet 112 and a second air inlet 113, the air outlet 111 is communicated with one end of the heat exchange channel, the second air inlet 113 is located on an air flow path in the vehicle driving process, and the first air inlet 112 and the second air inlet 113 are set to be capable of being alternatively communicated with the other end of the heat exchange channel. Based on the arrangement mode, the vehicle-mounted air conditioning unit can fully utilize the naturally flowing air passing through the shell 11 in the vehicle running process to exchange heat with the condenser 21, reduces the use frequency of the external fan 12, further can effectively reduce the charging and discharging times of the vehicle-mounted battery, achieves the purposes of protecting the vehicle-mounted battery and prolonging the service life, can also effectively reduce the energy consumption of the vehicle-mounted air conditioning unit, and provides good use experience for users.
It should be noted that, the present invention does not make any limitation on the specific structure of the vehicle interior unit, nor on the specific types and specific structures of the condenser 21, the throttling member 22, the evaporator 23 and the compressor 24, and the condenser 21 and the evaporator 23 may be coil heat exchangers, fin heat exchangers, or shell-and-tube heat exchangers; the throttling component 22 may be a throttling capillary tube or an electronic expansion valve, which is not restrictive, as long as the vehicle-mounted air conditioning unit can realize heat exchange through the vehicle-mounted internal unit, the vehicle-mounted external unit 1 and the refrigerant circulation loop 2 arranged between the vehicle-mounted internal unit and the vehicle-mounted external unit 1, and a technician can set the throttling capillary tube or the electronic expansion valve according to actual use conditions.
In addition, it should be noted that the present invention does not limit the specific shape of the housing 11, and the housing may be circular, square, or irregular, and may be set by a technician according to the actual use situation. As a preferable arrangement, the shape of the casing 11 is set in accordance with the position where the external machine 1 is specifically located in the vehicle, so as to more effectively utilize the space of the vehicle.
As a specific embodiment, the outdoor unit 1 further includes a shielding member 13, and the shielding member 13 is configured to be movable between the first air inlet 112 and the second air inlet 113 so that the first air inlet 112 and the second air inlet 113 can be alternatively communicated with the other end of the heat exchange channel. It should be noted that, the present invention does not limit the specific structure and the specific shape of the shielding member 13, as long as the shielding member 13 can select the first air inlet 112 and the second air inlet 113 to communicate with the other end of the heat exchanging channel, and a technician can set the configuration according to the actual use situation.
Preferably, the shielding member 13 is rotatably connected to the cabinet 11, and a portion of the cabinet 11 can be rotated by the shielding member 13 to open or close the second air inlet 113. Specifically, a rotating member 131 is provided at a connection of the blocking member 13 and the cabinet 11 to enable the blocking member 13 to be rotatably moved between the first and second wind inlets 112 and 113. Of course, the present invention does not limit the specific structure of the rotating member 131, and it may be a rotating hinge structure or a rotating spring structure, which is not restrictive, and the technician may set the actual rotation of the shielding member 13.
Further preferably, the shielding member 13 is further provided with a first engaging structure 132 and a second engaging structure 133, the first engaging structure 132 can be engaged with the first air inlet 112 to seal the first air inlet 112, and the second engaging structure 133 can be engaged with the second air inlet 113 to seal the second air inlet 113. It should be noted that the present invention does not limit the specific structure and the specific shape of the first engaging structure 132 and the second engaging structure 133 at all, and the first engaging structure 132 and the second engaging structure 133 may be a shielding plate or a shielding block, which is not restrictive, and the technician can set the shielding conditions according to the actual shielding conditions of the first engaging structure 132 and the second engaging structure 133.
As a specific implementation mode, first joint structure 132 and second joint structure 133 are the shielding plate to effectively guarantee first air intake 112 and second air intake 113's leakproofness, effectively guarantee when heat transfer passageway is linked together with second air intake 113, first air intake 112 can not leak out, and then effectively reduce the frequency of use of outer fan 12 of car, guarantee on-vehicle battery's life, simultaneously can also effectively reduce on-vehicle air conditioning unit's energy consumption, promote user's use and experience and feel.
Further, an end of the first coupling structure 132 and an end of the second coupling structure 133 are connected to form an obtuse angle, so that the shielding member 13 can selectively shield the first and second intake ports 112 and 113. Of course, the present invention does not limit the specific angle formed between the first engaging structure 132 and the second engaging structure 133, and the skilled person can set the angle between the first engaging structure 132 and the second engaging structure 133 according to the actual engaging situation.
It is further preferable that an end of the second coupling structure 133, which is away from the first coupling structure 132, is connected to the rotating member 131, and during the rotation of the second coupling structure 133, the first coupling structure 132 rotates with the second coupling structure 133 to achieve the opening or closing of the first and second intake vents 112 and 113.
In addition, in the preferred embodiment, a locking member 134 is further disposed at an end of the portion of the housing 11 that rotates with the shielding member 13 and is far away from the rotating member 131, and the locking member 134 can lock the housing 11 that rotates with the shielding member 13 to achieve the closing of the second air inlet 113. It should be noted that, the invention does not limit any specific structure of the locking member 134, and the locking member 134 may be a magnetic attraction locking structure or a snap locking structure, which are not restrictive, and the technician may set the locking structure according to the actual locking condition.
Further, the external fan 12 is set to be opened only when the first air inlet 112 is communicated with the heat exchange channel, so that the external fan 12 can fully utilize the naturally flowing air passing through the shell 11 in the running process of the vehicle to exchange heat with the condenser 21, the use frequency of the external fan 12 is reduced, the charge and discharge frequency of the vehicle-mounted battery can be effectively reduced, the purposes of protecting the vehicle-mounted battery and prolonging the service life are achieved, the energy consumption of the vehicle-mounted air conditioning unit can be effectively reduced, and a good use experience feeling is provided for a user.
In addition, in the preferred embodiment, the first air inlet 112 is disposed at a side portion of the casing 11, the second air inlet 113 is disposed at a top portion of the casing 11, and an included angle is formed between the second air inlet 113 and a vehicle traveling direction, so as to effectively utilize air flowing through the casing 11 during a vehicle traveling process, thereby effectively protecting a vehicle-mounted battery and reducing energy consumption of the vehicle-mounted air conditioning unit. Further, the number of the first air inlets 112 is two, and the two first air inlets 112 are respectively disposed at two sides of the cabinet 11, so as to effectively exchange heat with the condenser 21.
It should be noted that the present invention does not set any limit to the specific number and the setting position of the air outlet 111, the first air inlet 112 and the second air inlet 113. In addition, the present invention does not limit the specific structure and shape of the air outlet 111, the first air inlet 112 and the second air inlet 113 at all, and the air outlet 111, the first air inlet 112 and the second air inlet 113 may be a net structure or a single hole structure, which is not restrictive, and the technician may set the configuration according to the actual use situation.
Further, condenser 21 and outer fan 12 of car set gradually in along the direction of heat transfer air current in the heat transfer passageway, outer fan 12 of car is located near air outlet 111 to effectively guarantee the heat transfer effect of heat transfer passageway to condenser 21, and then effectively reduce on-vehicle air conditioning unit's energy consumption protects on-vehicle battery, guarantees on-vehicle battery's life. Of course, the present invention does not limit the specific arrangement positions of the condenser 21 and the air blower 12 outside the vehicle, and the condenser 21 and the air blower 12 outside the vehicle may be located at other positions inside the outdoor unit 1, and the technician may set the positions according to the actual use condition.
Furthermore, in the present preferred embodiment, the vehicle exterior unit 1 further includes a temperature sensor 14 and a controller 15, the temperature sensor 14 is capable of sensing the temperature of the condenser 21, and the controller 15 is capable of controlling the operating state of the vehicle-mounted air conditioning unit, for example: the frequency of the compressor 24, the rotational speed and the operating state of the air mover 12 outside the vehicle, and the like are controlled. Specifically, the temperature sensor 14 is located in the condenser 21 and the controller 15 is located in the vicinity of the compressor 24, although the specific locations of the temperature sensor 14 and the controller 15 are not limiting. It can be understood by those skilled in the art that the present invention does not limit the specific structure and model of the controller 15, and the controller 15 may be the original controller of the vehicle air conditioning unit, or may be a controller separately configured to execute the compressor frequency control method of the present invention, and the skilled person can set the structure and model of the controller 15 according to the actual use requirement.
Further, the vehicle exterior device 1 further comprises a baffle 16, one end of the baffle 16 is connected with the rotating member 131, and the other end of the baffle 16 is connected with the casing 11 to isolate the compressor 24 and the controller 15, so that the influence of air in the heat exchange channel on the service life of the compressor 24 and the controller 15 can be effectively avoided.
In this preferred embodiment, the vehicle-mounted air conditioning unit includes an active air supply mode and a natural air supply mode, and based on the specific structure of the vehicle-mounted air conditioning unit, the operating principles of the active air supply mode and the natural air supply mode of the vehicle-mounted air conditioning unit are as follows:
first, referring to fig. 3, fig. 3 is a schematic structural view of the vehicle external unit of the present invention in an active blowing mode. As shown in fig. 3, in the case of the active blowing mode, the locking member 134 is in the closed state, the second engaging structure 133 and a part of the casing 11 together shield the second air inlet 113, and the first engaging structure 132 and the first air inlet 112 are in the separated state, the air of the external machine 1 can enter the heat exchange channel from the first air inlet 112 to exchange heat with the condenser 21, at this time, the external fan 12 is in the working state, and the air after heat exchange is extracted to the air outlet 111 by the external fan 12 and then exhausted to the outside of the vehicle.
Next, referring to fig. 4, fig. 4 is a schematic structural view of the vehicle exterior unit of the present invention in a natural blowing mode. As shown in fig. 4, in the case of the natural blowing mode, the locking member 134 is in the open state to enable the partial housing 11 to rotate clockwise with the shutter member 13 by the rotation of the rotating member 131, the partial housing 11 and the second coupling structure 133 rotate to open the second air inlet 113, and the first coupling structure 132 rotates to the first air inlet 112 and just shields the first air inlet 112. At this time, the external fan 12 is in a closed state, air flowing naturally during the running process of the vehicle enters the heat exchange channel from the second air inlet 113 to exchange heat with the condenser 21, and the air after heat exchange is exhausted from the air outlet 111 to the outside of the vehicle through the hole in the external fan 12.
Based on the setting mode that above-mentioned on-vehicle air conditioning unit can switch between initiative air supply mode and natural air supply mode, when not needing initiative air supply mode, fan 12 outside the car is in the off-state, on-vehicle air conditioning unit can make full use of the vehicle go in-process through the air of the natural flow of casing 11 so that carry out the heat transfer to condenser 21, reduces fan 12 outside the car's use frequency, and then can enough effectively reduce the charge and discharge number of times of on-vehicle battery, reach the purpose of protection on-vehicle battery, extension on-vehicle battery life, can also effectively reduce on-vehicle air conditioning unit's energy consumption provides good use experience for the user and feels.
Referring next to fig. 5, fig. 5 is a flow chart illustrating the main steps of the control method of the present invention. As shown in fig. 5, based on the vehicle-mounted air conditioning unit described in the above embodiment, the control method of the present invention mainly includes the following steps:
s1: acquiring the displacement speed of the vehicle;
s2: and controlling the communication state of the first air inlet and the second air inlet with the heat exchange channel according to the displacement speed of the vehicle.
First, in step S1, the displacement speed of the vehicle is acquired; it should be noted that, the present invention does not limit any specific obtaining manner of the displacement speed, and it can be obtained by a vehicle running speed detector set by the vehicle itself, or can be obtained by calculation according to the actual running time and running distance of the vehicle, which is not restrictive.
Next, in step S2, the communication state between the first air intake opening 112 and the second air intake opening 113 and the heat exchange passage is controlled according to the displacement speed of the vehicle. It should be noted that, the present invention does not limit any specific determination method for controlling the communication state between the first air inlet 112 and the second air inlet 113 and the heat exchange channel according to the displacement speed, and the determination may be performed by comparing the displacement speed with a preset displacement speed or a ratio, or may be determined by a mathematical calculation formula together according to the displacement speed and other introduced parameters, such as the temperature of the evaporator 23, which is not restrictive, and the technician may set the determination according to the actual situation.
Referring next to fig. 6, fig. 6 is a flowchart illustrating specific steps of a preferred embodiment of the control method of the present invention. As shown in fig. 6, based on the vehicle-mounted air conditioning unit described in the above preferred embodiment, the preferred embodiment of the control method of the present invention specifically includes the following steps:
s101: acquiring the displacement speed of the vehicle;
s102: if the displacement speed of the vehicle is greater than or equal to the preset displacement speed, controlling the second air inlet to be communicated with the heat exchange channel;
s103: controlling the external fan to stop running;
s104: if the displacement speed of the vehicle is less than the preset displacement speed, controlling the first air inlet to be communicated with the heat exchange channel;
s105: controlling the operation of an external fan;
s106: acquiring the temperature of an evaporator and the change situation of the temperature in the vehicle;
s107: if the temperature of the evaporator is higher than the preset refrigeration temperature or the falling amplitude of the temperature in the vehicle does not reach the preset falling amplitude, controlling the first air inlet to be communicated with the heat exchange channel;
s108: if the temperature of the evaporator is less than or equal to the preset refrigeration temperature and the falling amplitude of the temperature in the vehicle reaches the preset falling amplitude, the second air inlet is communicated with the heat exchange channel;
s109: if the temperature of the evaporator is lower than the preset heating temperature or the rising amplitude of the temperature in the vehicle does not reach the preset rising amplitude, controlling the first air inlet to be communicated with the heat exchange channel;
s110: and if the temperature of the evaporator is greater than or equal to the preset heating temperature and the rising amplitude of the temperature in the vehicle reaches the preset rising amplitude, the second air inlet is communicated with the heat exchange channel.
In steps S101 to S105, first, the displacement speed of the vehicle is obtained, and it should be noted that the present invention does not limit the obtaining manner of the displacement speed, and the obtaining manner may be obtained according to a vehicle running speed detector set by the vehicle itself, or may be obtained by calculation according to the actual running time and running distance of the vehicle, which is not restrictive. Then, the communication state of the first air inlet 112 and the second air inlet 113 with the heat exchange channel is controlled according to the displacement speed. It should be noted that, the present invention does not limit any specific determination method for controlling the communication state between the first air inlet 112 and the second air inlet 113 and the heat exchange channel according to the displacement speed, and the determination may be performed by comparing the displacement speed with a preset displacement speed or a ratio, or may be determined by a mathematical calculation formula together according to the displacement speed and other introduced parameters, such as the temperature of the evaporator 23, which is not restrictive, and the technician may set the determination according to the actual situation.
Specifically, in order to more intuitively and quickly determine the communication state between the first air inlet 112 and the second air inlet 113 and the heat exchange channel, as an optimal setting mode, if the displacement speed is greater than or equal to a preset displacement speed, the second air inlet 113 is controlled to be communicated with the heat exchange channel, that is, the vehicle-mounted air conditioning unit is controlled to be in a natural air supply mode. Meanwhile, under the condition that the second air inlet 113 is communicated with the heat exchange channel, the controller 15 controls the fan 12 outside the vehicle to stop running, so that the vehicle can fully utilize the naturally flowing air passing through the shell 11 in the running process to exchange heat with the condenser 21, the use frequency of the fan 12 outside the vehicle is reduced, the charge and discharge frequency of the vehicle-mounted battery can be effectively reduced, the purposes of protecting the vehicle-mounted battery and prolonging the service life are achieved, and the energy consumption of the vehicle-mounted air conditioning unit can be effectively reduced. On the contrary, if the displacement speed is smaller than the preset displacement speed, the first air inlet 112 is controlled to be communicated with the heat exchange channel, that is, the vehicle-mounted air conditioning unit is controlled to be in an active air supply mode, and meanwhile, the external fan 12 is controlled to continue to operate under the condition that the first air inlet 112 is communicated with the heat exchange channel, so that the actual heat exchange requirement of a user is ensured.
It should be noted that, the present invention does not make any limitation on the specific setting mode of the preset displacement speed, and as a preferred setting mode, the preset displacement speed is 20km/h, so as to effectively meet the use requirements of users, and at the same time, the energy consumption of the vehicle-mounted air conditioning unit is effectively reduced, and the service life of the vehicle-mounted battery is ensured.
Further, in step S106, under the condition that the second air inlet 113 is communicated with the heat exchange channel, the temperature of the evaporator 23 and the change condition of the vehicle interior temperature are continuously obtained, and the first air inlet 112 is selectively controlled to be communicated with the heat exchange channel according to the temperature of the evaporator 23 and the change condition of the vehicle interior temperature. Of course, the present invention does not limit the specific obtaining manner of the temperature of the evaporator 23 and the variation of the temperature in the vehicle, for example, the temperature may be obtained according to an average value of the temperatures of the temperature sensor arranged in the vehicle in different time periods, or may be obtained according to the real-time temperature in the vehicle; preferably, the temperature of the evaporator 23 and the change condition of the temperature in the vehicle are obtained according to the real-time temperature in the vehicle, so that the running state of the vehicle-mounted air conditioning unit can be effectively adjusted in time, the energy consumption of the vehicle-mounted air conditioning unit is further effectively reduced, and the service life of a vehicle-mounted battery is ensured.
Specifically, in steps S107 and S108, when the vehicle-mounted air conditioning unit is in the cooling condition, on one hand, if the temperature of the evaporator 23 is greater than the preset cooling temperature, or the falling amplitude of the temperature in the vehicle does not reach the preset falling amplitude, the first air inlet 112 is controlled to be communicated with the heat exchange channel; of course, if the temperature of the evaporator 23 is greater than the preset refrigeration temperature and the falling range of the temperature in the vehicle does not reach the preset falling range, the first air inlet 112 may be controlled to communicate with the heat exchange channel, which is not restrictive, and the technician may set the temperature according to the actual situation; preferably, when the temperature of the evaporator 23 and the drop amplitude of the temperature in the vehicle meet the requirements at the same time, the first air inlet 112 is controlled to be communicated with the heat exchange channel, so that the vehicle-mounted air conditioning unit can be in a natural air supply mode for a long time, and the energy consumption is reduced. On the other hand, if the temperature of the evaporator 23 is less than or equal to the preset refrigeration temperature and the drop amplitude of the vehicle interior temperature reaches the preset drop amplitude, the second air inlet 113 is maintained to be communicated with the heat exchange channel.
Further, in steps S109 and S110, when the vehicle-mounted air conditioning unit is in a heating working condition, on one hand, if the temperature of the evaporator 23 is less than a preset heating temperature, or the rise amplitude of the temperature in the vehicle does not reach the preset rise amplitude, the first air inlet 112 is controlled to be communicated with the heat exchange channel, so as to better ensure the heat exchange effect; of course, if the temperature of the evaporator 23 is less than the preset heating temperature and the rise range of the temperature in the vehicle does not reach the preset rise range, the first air inlet 112 may also be controlled to communicate with the heat exchange channel, which is not restrictive, and the technician may set the temperature according to the actual situation. Preferably, when the temperature of the evaporator 23 and the rise range of the temperature in the vehicle meet the requirements at the same time, the first air inlet 112 is controlled to be communicated with the heat exchange channel, so that the vehicle-mounted air conditioning unit can be in a natural air supply mode for a long time, and the energy consumption is reduced. On the other hand, if the temperature of the evaporator 23 is greater than or equal to the preset heating temperature and the rising range of the vehicle interior temperature reaches the preset rising range, the second air inlet 113 is maintained to be communicated with the heat exchange channel.
It should be noted that, the present invention does not limit the specific setting modes of the preset refrigeration temperature, the preset heating temperature, the preset reduction amplitude and the preset increase amplitude, and the specific setting modes may be set by the user, or may be set by the actual operating conditions of the vehicle-mounted air conditioning unit and the vehicle; preferably, the preset cooling temperature and the preset heating temperature are both 20 ℃. This is not restrictive and the skilled person can set himself according to the actual situation.
In addition, it should be noted that, the present invention does not limit any specific determination manner of the communication state between the first air inlet 112 and the second air inlet 113 and the heat exchange channel, and the determination manner may be determined only by the displacement speed of the vehicle, or may be determined by the displacement speed of the vehicle, the temperature of the evaporator 23, and the change condition of the temperature in the vehicle; preferably, the displacement speed of the vehicle, the temperature of the evaporator 23 and the change condition of the temperature in the vehicle are determined together, so that under the condition that the vehicle-mounted air conditioning unit is ensured to run stably, the energy consumption is further reduced more effectively, and the service life of a vehicle-mounted battery is ensured.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of a vehicle-mounted air conditioning unit is characterized in that the vehicle-mounted air conditioning unit comprises an internal vehicle machine, an external vehicle machine and a refrigerant circulation loop arranged between the internal vehicle machine and the external vehicle machine,
the external machine comprises a shell and an external fan, a heat exchange channel is formed in the shell,
a condenser, a throttling component, an evaporator and a compressor are sequentially arranged on the refrigerant circulating loop, the evaporator is positioned in the vehicle interior machine, the condenser and the vehicle exterior fan are arranged in the heat exchange channel,
the shell is also provided with an air outlet, a first air inlet and a second air inlet, the air outlet is communicated with one end of the heat exchange channel, the second air inlet is positioned on an air flow path in the running process of the vehicle, and the first air inlet and the second air inlet can be alternatively communicated with the other end of the heat exchange channel,
the control method comprises the following steps:
acquiring the displacement speed of the vehicle;
and controlling the communication state of the first air inlet, the second air inlet and the heat exchange channel according to the displacement speed of the vehicle.
2. The control method according to claim 1, wherein the step of controlling the state of communication between the first and second intake ports and the heat exchange passage in accordance with the displacement speed of the vehicle includes:
and if the displacement speed of the vehicle is greater than or equal to the preset displacement speed, controlling the second air inlet to be communicated with the heat exchange channel.
3. The control method according to claim 2, characterized by further comprising:
and under the condition that the second air inlet is communicated with the heat exchange channel, controlling the fan outside the vehicle to stop running.
4. The control method according to claim 2, wherein the step of controlling the communication state of the first and second intake ports with the heat exchange passage according to the displacement speed of the vehicle further includes:
and if the displacement speed of the vehicle is less than the preset displacement speed, controlling the first air inlet to be communicated with the heat exchange channel.
5. The control method according to claim 4, characterized by further comprising:
and under the condition that the first air inlet is communicated with the heat exchange channel, controlling the fan outside the vehicle to operate.
6. The control method according to any one of claims 2 to 5, characterized in that the preset displacement speed is 20 km/h.
7. The control method according to any one of claims 1 to 5, characterized by further comprising:
under the condition that the second air inlet is communicated with the heat exchange channel, the temperature of the evaporator and the change condition of the temperature in the vehicle are obtained;
and selectively controlling the first air inlet to be communicated with the heat exchange channel according to the temperature of the evaporator and the change condition of the temperature in the vehicle.
8. The control method according to claim 7, wherein the step of selectively controlling the first air inlet to communicate with the heat exchange channel according to the temperature of the evaporator and the temperature inside the vehicle specifically comprises:
when the vehicle-mounted air conditioning unit operates in a refrigeration working condition, if the temperature of the evaporator is higher than a preset refrigeration temperature and/or the falling amplitude of the temperature in the vehicle does not reach the preset falling amplitude, controlling the first air inlet to be communicated with the heat exchange channel;
and when the vehicle-mounted air conditioning unit operates in a heating working condition, if the temperature of the evaporator is lower than a preset heating temperature and/or the rise amplitude of the temperature in the vehicle does not reach the preset rise amplitude, controlling the first air inlet to be communicated with the heat exchange channel.
9. The control method according to claim 8, wherein in a case where the second air intake port is communicated with the heat exchange passage, the control method further comprises:
when the vehicle-mounted air conditioning unit operates in a refrigeration working condition, if the temperature of the evaporator is less than or equal to the preset refrigeration temperature and the falling amplitude of the temperature in the vehicle reaches the preset falling amplitude, the second air inlet is maintained to be communicated with the heat exchange channel;
and when the vehicle-mounted air conditioning unit operates in a heating working condition, if the temperature of the evaporator is greater than or equal to the preset heating temperature and the rise amplitude of the temperature in the vehicle reaches the preset rise amplitude, the second air inlet is communicated with the heat exchange channel.
10. An on-board air conditioning unit characterized in that it comprises a controller capable of executing the control method of any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486675.8A CN114312210A (en) | 2021-12-07 | 2021-12-07 | Vehicle-mounted air conditioning unit and control method thereof |
| PCT/CN2022/104426 WO2023103368A1 (en) | 2021-12-07 | 2022-07-07 | Vehicle-mounted air conditioning unit and control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486675.8A CN114312210A (en) | 2021-12-07 | 2021-12-07 | Vehicle-mounted air conditioning unit and control method thereof |
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| Publication Number | Publication Date |
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| CN114312210A true CN114312210A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111486675.8A Pending CN114312210A (en) | 2021-12-07 | 2021-12-07 | Vehicle-mounted air conditioning unit and control method thereof |
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| Country | Link |
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| CN (1) | CN114312210A (en) |
| WO (1) | WO2023103368A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103368A1 (en) * | 2021-12-07 | 2023-06-15 | 青岛海尔空调器有限总公司 | Vehicle-mounted air conditioning unit and control method therefor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19956816A1 (en) * | 1999-11-25 | 2001-06-07 | Bosch Gmbh Robert | Refrigerant circulation |
| JP2010048498A (en) * | 2008-08-22 | 2010-03-04 | Tgk Co Ltd | Refrigerating cycle |
| US9868336B2 (en) * | 2014-09-26 | 2018-01-16 | Thermo King Corporation | Method and system for controlling condenser/radiator airflow |
| CN110497769B (en) * | 2019-09-23 | 2024-07-23 | 中国科学院理化技术研究所 | Automobile heat pump system and control method thereof |
| CN111688443B (en) * | 2020-06-15 | 2024-05-10 | 珠海格力电器股份有限公司 | Automobile air conditioning system and control method |
| CN111942100A (en) * | 2020-07-06 | 2020-11-17 | 珠海格力电器股份有限公司 | Automobile air conditioning system and control method thereof |
| CN114312210A (en) * | 2021-12-07 | 2022-04-12 | 青岛海尔空调器有限总公司 | Vehicle-mounted air conditioning unit and control method thereof |
-
2021
- 2021-12-07 CN CN202111486675.8A patent/CN114312210A/en active Pending
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2022
- 2022-07-07 WO PCT/CN2022/104426 patent/WO2023103368A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103368A1 (en) * | 2021-12-07 | 2023-06-15 | 青岛海尔空调器有限总公司 | Vehicle-mounted air conditioning unit and control method therefor |
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| WO2023103368A1 (en) | 2023-06-15 |
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