CN112810393B - Air conditioning system and refrigeration control method thereof - Google Patents
Air conditioning system and refrigeration control method thereof Download PDFInfo
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- CN112810393B CN112810393B CN202010304272.6A CN202010304272A CN112810393B CN 112810393 B CN112810393 B CN 112810393B CN 202010304272 A CN202010304272 A CN 202010304272A CN 112810393 B CN112810393 B CN 112810393B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005057 refrigeration Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000036760 body temperature Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Classifications
-
- 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00285—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for vehicle seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5628—Heating or ventilating devices characterised by convection by air coming from the vehicle ventilation system, e.g. air-conditioning system
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention provides an air conditioning system and a refrigeration control method thereof, comprising: an air inlet passage; an air supply passage; an evaporator; heaters mounted at substantially the same positions in the plurality of air supply passages, and the cross-sectional area of the heaters in the air supply passages is smaller than the cross-sectional area of the air supply passages; a plurality of air mixing doors which are installed at the upstream side of the heater corresponding to the air supply passages and can shield the heater, and the air mixing doors are formed to be movable independently of each other in the cross-sectional direction of the air supply passages; a deflector disposed near the air supply openings of the plurality of air supply passages and downstream of the heating; and a control unit for controlling the air mixing damper to move in the direction of not shielding the heater in the section direction of the air supply passage when the user demand temperatures of the left and right seats have a difference in the cooling mode. According to the invention, the temperature required by different users of the left seat and the right seat can be realized without a heat source, the space occupation is small, and the energy utilization rate is high.
Description
Technical Field
The invention relates to an air conditioning system and a refrigeration control method thereof.
Background
Currently, in a vehicle air conditioning system capable of independently adjusting and controlling the temperature of each seat, each seat has different cooling capacity requirements due to user requirements or sunlight deflection and the like. When there is a difference between the user's required temperatures of the left and right seats in the cooling condition, it is generally necessary to start the heater to heat the air, and mix the hot air heated by the heater into the cold air generated by the evaporator in a certain proportion, so as to realize independent control of the temperatures of the seats.
However, the frequent activation of the heater in the cooling mode means additional consumption of energy of the vehicle, such as energy consumed by the heater itself and the need to provide greater cooling capacity due to the mixing of hot air, which do not meet the current social environment demands advocated for energy saving and environmental protection. Particularly, in the electric vehicle, there is a problem that the endurance mileage is affected due to deterioration of the power consumption. In this regard, it is desirable to be able to achieve temperature differential cooling between the seats without activating the heater.
In the prior art, when a person skilled in the art is faced with the technical problem that the heater is not started and temperature difference refrigeration among the seats is realized within a certain range, a wind mixing air door is usually arranged at the upstream of the heater, a wind quantity proportion control air door is arranged at the upstream of the wind mixing air door, the wind mixing air door is adjusted to completely shield the heater so as to prevent air from flowing into the heater, the position of the wind quantity proportion control air door is adjusted to control the ventilation area of a passage leading to each seat, and therefore different ventilation quantity of each seat is realized, and further different user demand temperatures of the left seat and the right seat are realized.
The method realizes energy saving, but requires additionally arranging the air quantity proportion control air door, thereby not only increasing parts and components to complicate the structure and raise the manufacturing cost, but also deteriorating the arrangement freedom degree of the vehicle space, and being quite inapplicable in small-sized vehicles with compact structures.
Disclosure of Invention
Problems to be solved by the invention:
in view of the above-described problems, an object of the present invention is to provide an air conditioning system and a cooling control method thereof that can realize different user-required temperatures of left and right seats without a heat source, and that has a small space occupation and a high energy utilization rate.
Technical means for solving the problems:
the present invention provides an air conditioning system, comprising: an air inlet passage; a plurality of air supply passages branched from the air intake passage; an evaporator installed in the air intake passage at a position closer to an upstream side than the air supply passage; a heater mounted at substantially the same position in the plurality of air supply passages, and a cross-sectional area of the heater in the air supply passage is smaller than a cross-sectional area of the air supply passage; a plurality of air mixing doors which are installed in correspondence with the respective air supply passages at an upstream side of the heater and which can shield the heater, and which are formed so as to be movable independently of each other in a cross-sectional direction of the air supply passages; and a deflector disposed adjacent to the air supply openings of the plurality of air supply passages and downstream of the heating; and a control unit for controlling the air mixing damper to move in a direction not to block the heater in the cross section direction of the air supply passage when the user demand temperatures of the left and right seats have a difference in the cooling mode.
According to the invention, the air mixing damper is moved in the cross section direction to change the flow of air in the air supply passage, and the air mixing damper is moved in the direction not to block the heater, so that the air in the air supply passage inevitably passes through the heater and flows outwards, thereby increasing the ventilation resistance of the flowing air, that is, the larger the air quantity flowing from the heater is, the larger the ventilation resistance is, and the smaller the air quantity reaching each seat under the same air supply capacity is. That is, when the heater power supply or the warm water supply function is turned off or the heat source is not started, the ventilation resistance in the air supply passage is controlled by controlling the degree to which the heater is blocked by the air mixing damper, so that the air quantity ratio to be sent to each seat is adjusted, and different air mixing ranges of each seat are realized, and further, different user demand temperatures of the left and right seats are satisfied.
In the present invention, the control unit may control the air mixing damper to move in a direction not to block the heater in a cross-sectional direction of the air supply passage when the difference value is within a achievable range.
In the present invention, the control unit may control the air mixing damper on the side where the user demand temperature of the left and right seats is high to move in a direction not to block the heater in the cross-sectional direction of the air blowing path.
In the present invention, the air mixing damper may be movable between: a first position in which the heater is completely shielded from a portion other than the heater in the air supply passage; and a second position in which a portion of the air supply passage other than the heater is completely shielded from the heater.
In the present invention, when the difference is the upper threshold of the achievable range, the control unit may control the air mixing damper on the side where the user demand temperature of the left and right seats is low to be located at the first position, and control the air mixing damper on the side where the user demand temperature of the left and right seats is high to be located at the second position.
In the present invention, the ventilation area near the air supply port of the air supply passage may be changed by adjusting the angle, the size, and/or the shape of the deflector.
The invention also provides a refrigeration control method using the air conditioning system, which comprises the following steps of: judging whether the difference value is within a range capable of realizing different user demand temperatures by adjusting the air mixing damper, and when the difference value is judged to be within the range, controlling the air mixing damper on the side with higher user demand temperature to move in the direction of not shielding the heater in the section direction of the air supply passage by the control unit compared with the air mixing damper on the side with lower user demand temperature.
The invention has the following effects:
the air conditioning system and the refrigeration control method thereof can realize the target temperature difference in the refrigeration mode without starting a heat source and without arranging additional parts when the user demand temperatures of at least the left seat and the right seat have difference values.
Drawings
Fig. 1 is a schematic structural view of an air conditioning system S according to an embodiment of the present invention;
fig. 2 is a refrigeration control flow chart of an air conditioning system S according to an embodiment of the present invention;
FIG. 3 is a graph showing the correlation of the position of the mixing damper with the achievable range;
FIG. 4 is a graph showing the dependence of the ventilation resistance of the heater on the achievable range;
symbol description:
s an air conditioning system;
1. an evaporator;
2. a heater;
3. 4, a wind mixing air door;
5. 6, an air supply passage;
8. a deflector;
10. an air inlet passage;
11. 12 air supply ports.
Detailed Description
The invention will be further described in connection with the following embodiments, it being understood that the following embodiments are only illustrative of the invention and not limiting thereof. The same or corresponding reference numerals in the drawings denote the same parts, and a repetitive description thereof will be omitted.
An air conditioning system S according to an embodiment of the present invention includes, as shown in a schematic configuration diagram of fig. 1: an air intake passage 10 communicating with the outside of the vehicle; air supply passages 5, 6 branched from the air intake passage 10; an evaporator 1 installed in the air intake passage 10 at a position upstream of the air supply passages 5, 6; the heater 2 is installed at the same position in the air supply passages 5 and 6, and the cross-sectional area of the heater in the air supply passages 5 and 6 is smaller than the cross-sectional area of the air supply passages 5 and 6; a plurality of air mixing doors 3, 4 installed in the respective air supply passages 5, 6 upstream of the heater 2, respectively, and capable of shielding the heater 2, and the plurality of air mixing doors 3, 4 are formed so as to be movable independently of each other in the cross-sectional direction of the air supply passages 5, 6; a deflector 8 provided near the air outlets 11, 12 of the air supply passages 5, 6 and downstream of the heater; and a control unit (not shown) for controlling the air mixing doors 3, 4 to move in a direction not to block the heater 2 in the cross section direction of the air supply passages 5, 6 when there is a difference in the user demand temperatures of the plurality of seats in the cooling mode.
More specifically, the air intake passage 10 communicates with the outside of the vehicle to suck in air from the outside of the vehicle and send it into the air conditioning system in the vehicle for air conditioning, and the air intake passage 10 branches off at the downstream side into the air supply passages 5, 6, the air supply passages 5, 6 communicating with the vehicle interior to blow the temperature-adapted air subjected to air conditioning into the vehicle interior to achieve the user-required temperature. In the present embodiment, one air intake passage and two air supply passages are exemplified, and in this example, the two air supply passages are respectively led to the left and right seats in the vehicle interior, but the present invention is not limited thereto, and may be changed according to the specific vehicle condition requirements. The evaporator 1 is installed on the air inlet passage 10, and is used for performing heat exchange with the outside air, and the low-temperature condensed liquid in the evaporator is gasified and absorbs heat to achieve the refrigeration effect.
The heater 2 is mounted on the air supply passages 5, 6, and in the present embodiment, the heater 2 is shared by the two air supply passages 5, 6, and the cross-sectional area of the heater in each air supply passage 5, 6 is smaller than the cross-sectional area of the air supply passage 5, 6 itself, but the present invention is not limited to the configuration shown in the present embodiment, and the specific arrangement and the like of the heater 2 can be freely selected according to the actual situation as long as the heater 2 is located at substantially the same position in the upstream-downstream direction. The air mixing dampers 3 and 4 are mounted on the air supply passages 5 and 6 in a one-to-one correspondence manner slightly upstream of the heater 2, and are configured to be independently movable in the cross-sectional directions of the air supply passages 5 and 6 to adjust the flow rate and direction of air in the passages. In the present embodiment, the air mix doors 3 and 4 can be moved to completely block or completely unblock the heater 2, that is, the air mix doors 3 and 4 can be moved between a first position in which the air mix doors completely block the heater 2 and do not block portions other than the heater 2 in the air supply passages 5 and 6 and a second position in which the air mix doors completely block portions other than the heater 2 in the air supply passages 5 and 6 and do not block the heater 2. However, the size, shape, movement mode, and the like of the air mixing damper 3, 4 are not limited to the illustrated embodiment and the above description.
The baffle 8 is installed near the air supply ports 11, 12 on the downstream side of the heater 2, is installed in one-to-one correspondence with the air supply passages 5, 6, and is capable of independently adjusting the angle and direction, the positions and orientations of the air supply ports 11, 12, etc. correspond to the left and right seats, and the ventilation area near the air supply ports 11, 12 of the air supply passages 5, 6 can be changed by adjusting the angle, size, and/or shape of the baffle 8. Specifically, under the cooling condition, the air outside the vehicle is sucked through the air inlet passage 10, cooled by the evaporator 1, uniformly dispersed into the air supply passages 5 and 6 branched at the downstream side, continuously flows downstream, reaches the air supply openings 11 and 12 after passing through the air flow paths defined by the air mixing doors 3 and 4 and the heater 2, contacts with the guide plate 8, and finally is blown into the vehicle.
According to the structure of the invention, in the cooling mode, when the difference exists between the user demand temperatures of at least the left and right seats, the air at the natural temperature sucked from the outside of the vehicle can be subjected to multiple temperature adjustment without starting the heat source. In detail, according to different user demand temperatures of the left and right seats, the evaporator 1 integrally cools the sucked external air until the air temperature reaches the temperature of the lower side of the user demand temperatures, the cooled air equally flows into the air supply passages 5 and 6 correspondingly communicated with the left and right seats, and the control unit controls the air mixing doors 3 and 4 to move in the cross section directions of the air supply passages 5 and 6 according to the user demand temperatures, specifically, the air mixing doors positioned on the air supply passage of the higher side of the user demand temperatures move in the direction of not shielding the heater 2. Details of the related control method will be described later.
After the cooled air, that is, the air with the actual temperature being the temperature at the lower side of the user's required temperature, enters the two air supply passages 5, 6, respectively, the air supply passage with the lower user's required temperature (for example, the air supply passage is hereinafter collectively referred to as the air supply passage 5 in fig. 1) has its corresponding air mixing damper 3 completely shielding the portion of the heater 2 located in the passage, so that the air directly reaches the air supply port 11 without passing through the heater 2, and the air is guided by the guide plate 8 to provide the air volume and the temperature (lower temperature) expected by the user on the seat.
On the other hand, in the air supply passage (in the same way, taking fig. 1 as an example, hereinafter, the air supply passage is collectively referred to as an air supply passage 6) on the side where the user needs a higher temperature, the corresponding air mixing damper 4 shields the part outside the heater 2 in the passage within a certain range according to fig. 3 described later, so that part or all of the air in the passage passes through the heater 2 and then reaches the air supply port 12, wherein the air passing through the heater 2 deteriorates the ventilation resistance R due to the structural resistance of the heater 2 itself, so that a relatively smaller amount of cold air reaches the air supply port 12 under the same air supply power, and the user on the seat feels a higher body temperature due to a smaller amount of cold air, thereby obtaining the air volume and the temperature (higher temperature) expected by the user. The user in the seat can adjust the air flow amount to the seat and raise the body temperature by changing the shape of the air blowing passages (not specified in the present invention) at the air outlets 11, 12 by adjusting the baffle plate 8.
According to the present invention, by moving the air mixing damper 3, 4 in the cross-sectional direction to change the flow of air in the air supply passage 5, 6, and by moving the air mixing damper on the side where the user's required temperature is higher in the direction not to block the heater 2, the air in the air supply passage 5, 6 is inevitably circulated outside through the heater 2, and the ventilation resistance R of the flowing air is increased, that is, the larger the ventilation resistance R is, the smaller the amount of air reaching each seat under the same air supply capacity is. That is, when the power supply to the heater 2 or the warm water supply function is turned off or the heat source is not started in a low power consumption state, the ventilation resistance R in the air supply passages 5, 6 can be controlled by controlling the degree to which the air mixing damper 3, 4 shields the heater 2, so that the air quantity ratio to be sent to each seat can be adjusted, and different air mixing ranges of each seat can be realized, and further, different user demand temperatures of the left and right seats can be satisfied.
The refrigeration control method by the air conditioning system S of the present invention will be described in further detail with reference to the accompanying drawings. It should also be understood that the following is only for further illustrating the present invention and should not be construed as limiting the scope of the present invention, and that some insubstantial modifications and adaptations of the invention by those skilled in the art are within the scope of the present invention. The specific process parameters and the like described below are also merely examples of suitable ranges, i.e., one skilled in the art can make a suitable selection from the description herein and are not intended to be limited to the specific values described below.
Fig. 2 is a flow chart of cooling control of the air conditioning system S according to an embodiment of the present invention. As shown in the flowchart of fig. 2, when the user sets the user demand temperatures of the different agents (i.e., when there is a difference in the user demand temperatures of the plurality of agents), the control unit performs the related control. The preset threshold T0 mentioned later refers to a temperature required by the user of different seats by adjusting the positions of the air mixing doors 3 and 4 when the difference is below the threshold T0 in the cooling mode. Namely, when the difference is below the threshold value T0, the achievable range between the user demand temperatures of different seats can be met by only adjusting the positions of the air mixing doors 3 and 4.
In step S1, the control unit determines whether or not each seat (at least the left and right seats) is required to be cooled based on the actual temperature in the vehicle interior and/or the amount of sunlight bias, etc., and if not, proceeds to step S5, that is, the normal air conditioning mode, for example, the heater 2 is started, and if yes, proceeds to step S2.
In step S2, the control unit determines whether or not there is a temperature difference T between the user-required temperatures of the respective seats, and if not, it proceeds to step S5, that is, the normal air conditioning mode, for example, the heater 2 is started or the air mixing dampers 3 and 4 are synchronously adjusted, and if yes, it proceeds to step S3.
In step S3, the control unit determines whether or not the temperature difference T of the user demand temperature of each seat is equal to or lower than a threshold T0, and if not, it proceeds to step S5, that is, the normal air conditioning mode, for example, the heater 2 is started, and if yes, it proceeds to step S4.
The control unit performs energy-saving air conditioning mode control (i.e., energy-saving control) specific to the above-described air conditioning system based on the present invention in step S4, adjusts the moving positions SW of the air mix doors 3, 4 according to the correspondence shown in fig. 3 and 4 to control the air volume passing through the heater 2, thereby realizing the temperature difference T between seating and seating.
The control unit performs conventional air conditioning mode control (i.e., conventional control) in the art in step S5.
For example, assuming that the above-mentioned threshold T0 is 2 ℃, the current vehicle interior environment temperature is 30 ℃, the user demand temperature is set to 25 ℃ by the main driver seat user, the user demand temperature is set to 26 ℃ by the auxiliary driver seat user, if it is determined that there is a cooling demand in step S1, step S2 is entered, if it is determined that there is a temperature difference t=1 ℃ in step S2, step S3 is entered, if it is determined that the temperature difference t=1 ℃ is less than the threshold t0=2 ℃ in step S3, that is, within the achievable range, the heater 2 is not started, and only the position SW of the air mixing damper on the auxiliary driver seat side (the side with higher set temperature) is adjusted according to the correspondence relation shown in fig. 3 and 4, so that the shielding degree of the heater 2 is controlled at a predetermined ratio, and the ventilation resistance R is controlled so that the air quantity of the same power through the air inlets 11, 12 is controlled, so that different user demand temperatures are satisfied.
In step S6, the control unit determines whether or not the time to execute the normal control or the energy saving control has reached a predetermined period, and if not, the control unit remains in step S5 or step S4 to continue the execution of the control, and if yes, the control unit proceeds to step S7.
The control unit again performs the above-described judgment based on the current user-set demand temperature, solar irradiation deviation amount, and/or environmental conditions (outside air temperature, blower air volume, air supply port mode, etc.) in step S7.
In the invention, the extra energy consumption and poor user physical examination caused by too frequent switching of the air conditioning mode can be prevented by setting the specified period, and the energy saving mode can be ensured to be entered as much as possible under the condition that the energy saving condition is met by setting the circulation judgment.
Fig. 3 is a diagram showing the correlation between the position SW of the damper 3, 4 and the threshold T0. Fig. 4 is a diagram showing the correlation of the ventilation resistance R of the heater 2 with the threshold T0. In the following, the relationship between the position SW of the damper in the air supply passage and the threshold T0 and the ventilation resistance R of the heater 2 and the threshold T0 during control by the control unit will be described in detail with reference to fig. 3 and 4. Here, moving the position SW of the air mixing damper corresponds to changing the degree of shielding of the heater 2, and when the position sw=100%, it indicates that the air volume ratio passing through the heater in the air supply passage corresponding to the seat is the maximum.
In the present invention, the relationship between the temperature difference T and the position SW of the air mixing damper in the air supply path may be preset according to real vehicle data under different environmental conditions, for example, as shown in fig. 3, when the temperature difference t=1 ℃, the corresponding position sw=50% is the threshold t0=2 ℃, at this time, the control unit controls the air mixing damper corresponding to the side with higher user demand temperature to move in the direction of not shielding the heater 2 until the shielding degree becomes 50%, and when the temperature difference t=t0=2 ℃, the corresponding position sw=100% is the control unit controls the air mixing damper corresponding to the side with higher user demand temperature to move in the direction of not shielding the heater 2 until the shielding degree becomes 0%. For example, the real vehicle data may be different states such as a solar radiation amount, an outside air temperature, an inside room temperature, an air volume, and a passenger body temperature. In the present embodiment, the relationship between the temperature difference T obtained from the real vehicle data and the position SW of the air mixing damper in the air supply passage is substantially linear, but the relationship is merely an example, and the relationship is not limited to linear, but is actually true, and the relationship is different in different vehicle types or environmental conditions.
Further, according to the degree of shielding of the heater 2 by the air mixing damper, the ventilation resistance R caused by the heater 2 also changes, and the smaller the shielding of the heater, the larger the ventilation resistance R of the heater is, the larger the ventilation resistance R has an effect on the air volume, so as to make the difference in the user demand temperature which can be achieved by the larger ventilation resistance R closer to the threshold T0 as shown in fig. 4.
In the present invention, the threshold T0 is set through real vehicle data, specifically, the relationship between the temperature difference T and the position SW of the air mixing damper in the air supply passage is actually measured on the vehicle under the conditions of different amounts of sunlight, outside air temperature, inside room temperature, air volume, and passenger body temperature, so that T0 is determined when sw=100%. In this case, it is conceivable to increase the ventilation resistance R of the heater 2 itself and/or the ventilation resistance r+ of the air supply passage, thereby increasing the amount of change in the air volume and further fundamentally increasing the threshold T0. The ventilation resistance r+ of the air supply passage may be increased by changing the shape or size of the air supply passage, for example, by reducing the effective ventilation area of the air supply passage or increasing the air supply path. This can further save energy.
Therefore, in the invention, the heater is not required to be started, but the air quantity of at least the left and right seats is controlled by controlling the air quantity entering the heater 2 so as to realize the temperature difference of the body temperature, no additional parts are required to be arranged, the existing space arrangement of the air conditioning system is not required to be changed or adjusted according to the adjustment requirement of ventilation impedance, and the proportion of the air in the corresponding passages of each seat passing through the heater is controlled by only adjusting the position of the air mixing damper so as to realize different user requirement temperatures in a certain range in a refrigeration mode.
The above embodiments further describe the objects, technical solutions and advantageous effects of the present invention in detail, it should be understood that the above is only one embodiment of the present invention and is not limited to the scope of the present invention, and the present invention may be embodied in various forms without departing from the gist of the essential characteristics of the present invention, and thus the embodiments of the present invention are intended to be illustrative and not limiting, since the scope of the present invention is defined by the claims rather than the specification, and all changes falling within the scope defined by the claims or the equivalent scope of the scope defined by the claims should be construed to be included in the claims. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An air conditioning system is provided with:
an air inlet passage;
a plurality of air supply passages branched from the air intake passage;
an evaporator installed in the air intake passage at a position closer to an upstream side than the air supply passage;
a heater mounted at substantially the same position in the plurality of air supply passages, and a cross-sectional area of the heater in the air supply passage is smaller than a cross-sectional area of the air supply passage;
a plurality of air mixing doors which are installed in each of the air supply passages at positions upstream of the heater and which are capable of shielding the heater, and which are formed so as to be movable independently of each other in a cross-sectional direction of the air supply passage; and
a deflector disposed in the vicinity of the air supply port of each air supply passage and downstream of the heater;
it is characterized in that the method comprises the steps of,
and a control unit for controlling the power supply of the heater to be in a closed state and controlling the air mixing damper to move in a direction not to block the heater in the cross section direction of the air supply passage when the user demand temperatures of the plurality of seats have a difference value and the difference value is less than a preset threshold value in the cooling mode.
2. An air conditioning system according to claim 1, wherein,
the control unit controls the air mixing damper at the side with higher user demand temperature of the plurality of seats to move in the direction of not shielding the heater in the section direction of the air supply passage.
3. An air conditioning system according to claim 2, wherein,
the air mixing damper is movable between:
a first position in which the heater is completely shielded from a portion other than the heater in the air supply passage; and
and completely shielding the part of the air supply passage except the heater from the second position of the heater.
4. An air conditioning system according to claim 3, wherein,
when the difference value is the preset threshold value, the control unit controls the air mixing damper on the side with lower user demand temperature of the plurality of seats to be located at the first position, and controls the air mixing damper on the side with higher user demand temperature of the plurality of seats to be located at the second position.
5. An air conditioning system according to any of claims 1 to 4, characterized in that,
by adjusting the angle, the size and/or the shape of the guide plate, the ventilation area near the air supply opening of the air supply passage is changed.
6. A refrigeration control method of an air conditioning system is characterized in that,
the air conditioning system according to any one of claims 1 to 5 is configured to perform the following control when there is a difference in user demand temperatures of a plurality of agents in the cooling mode:
and judging whether the difference value is below a preset threshold value, and when the difference value is judged to be below the threshold value, controlling the power supply of the heater to be in a closed state by the control unit, and controlling the air mixing damper at the side with higher user demand temperature to move in the direction of not shielding the heater in the section direction of the air supply passage compared with the air mixing damper at the side with lower user demand temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304272.6A CN112810393B (en) | 2020-04-17 | 2020-04-17 | Air conditioning system and refrigeration control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304272.6A CN112810393B (en) | 2020-04-17 | 2020-04-17 | Air conditioning system and refrigeration control method thereof |
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| Publication Number | Publication Date |
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| CN112810393A CN112810393A (en) | 2021-05-18 |
| CN112810393B true CN112810393B (en) | 2024-01-26 |
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| CN202010304272.6A Active CN112810393B (en) | 2020-04-17 | 2020-04-17 | Air conditioning system and refrigeration control method thereof |
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