CN112810393A - Air conditioning system and refrigeration control method thereof - Google Patents
Air conditioning system and refrigeration control method thereof Download PDFInfo
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- CN112810393A CN112810393A CN202010304272.6A CN202010304272A CN112810393A CN 112810393 A CN112810393 A CN 112810393A CN 202010304272 A CN202010304272 A CN 202010304272A CN 112810393 A CN112810393 A CN 112810393A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005057 refrigeration Methods 0.000 title claims abstract description 14
- 238000007664 blowing Methods 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 238000009423 ventilation Methods 0.000 claims description 26
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013589 supplement Substances 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
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004134 energy conservation Methods 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
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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
- B60H1/00271—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
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- 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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- Aviation & Aerospace Engineering (AREA)
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides an air conditioning system and a refrigeration control method thereof, comprising: an air intake passage; an air supply passage; an evaporator; a heater installed at substantially the same position in the plurality of air blowing passages, and a cross-sectional area of the heater in the air blowing passage is smaller than a cross-sectional area of the air blowing passage; a plurality of air mixing dampers which are installed at the upstream of the heater corresponding to each air supply passage and can shield the heater, and the air mixing dampers are formed to be capable of moving independently from each other in the cross section direction of the air supply passage; a guide plate arranged near the air supply outlet of the air supply passages and at a position downstream of the heating part; and a control unit for controlling the air mixing damper to move towards the direction not shielding the heater in the cross section direction of the air supply passage when the user demand temperature of the left and right seats has a difference in the cooling mode. According to the invention, the temperature required by different users of the left and right seats can be realized under the condition of no heat source, the occupied space 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
At present, in a vehicle air conditioning system capable of independently adjusting and controlling the temperature of each seat, each seat has different refrigerating capacity requirements due to user requirements or sunlight deflection and the like. In the refrigeration working condition, when the user demand temperature of the left and right seats has a difference value, the heater is usually required to be started to heat air, and the cold air generated by the evaporator is mixed with the hot air heated by the heater in a certain proportion, so that the independent control of the temperature of each seat is realized.
However, the frequent activation of the heater in the cooling mode means additional consumption of energy from 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, and does not meet the social environmental requirements of energy conservation and environmental protection. Particularly, in the case of an electric vehicle, there is a problem that the driving range is affected by deterioration of power consumption. In this regard, it is desirable to achieve temperature differential cooling between the seats without activating the heater.
In the prior art, when a person skilled in the art faces the technical problem of realizing temperature difference refrigeration between seats within a certain range without starting a heater, a mixed air door is usually arranged at the upstream of the heater, an air quantity proportion control door is arranged at the upstream of the mixed air door, the mixed air door is adjusted to completely shield the heater so as to avoid air flowing in the heater, the position of the air quantity proportion control door is adjusted to control the ventilation area of a passage leading to each seat, and therefore different ventilation quantities of each seat are realized, and different user required temperatures of the left seat and the right seat are realized.
Although the method realizes energy saving, an air quantity ratio control air door needs to be additionally arranged, so that not only are parts increased to make the structure complicated and the manufacturing cost increased, but also the degree of freedom of arrangement of the vehicle space is deteriorated, and the method is not suitable for small vehicles with compact structures.
Disclosure of Invention
The problems to be solved by the invention are as follows:
in view of the above problems, an object of the present invention is to provide an air conditioning system and a cooling control method thereof that can achieve different user demand temperatures for left and right seats without requiring a heat source, and that have a small space occupation and a high energy utilization rate.
The technical means for solving the problems are as follows:
the present invention provides an air conditioning system, comprising: an air intake passage; a plurality of air supply passages branched from the air inlet passage; an evaporator installed in the air intake passage at a position upstream of the air supply passage; a heater installed at substantially the same position in the plurality of air blowing passages, and having a cross-sectional area in the air blowing passage smaller than that of the air blowing passage; a plurality of air mixing dampers which are installed corresponding to the respective air blowing passages at a position upstream of the heater and can shield the heater, and the air mixing dampers are formed to be movable independently of each other in a cross-sectional direction of the air blowing passages; and a guide plate disposed in the vicinity of the air supply ports of the plurality of air supply passages and downstream of the heating portion; and a control unit for controlling the air mixing damper to move in the direction of not blocking the heater in the cross section direction of the air supply passage when the user demand temperature of the left and right seats is different in the cooling mode.
According to the present invention, the flow of air in the air supply passage is changed by moving the air mixing damper in the cross-sectional direction, and the air in the air supply passage is inevitably passed through the heater and then circulated to the outside by moving the air mixing damper in the direction not to block the heater, so that the ventilation resistance of the flowing air is increased, that is, the larger the amount of air circulated from the heater, the larger the ventilation resistance, the smaller the amount of air reaching each seat with the same air supply capacity. That is, the ventilation impedance in the air supply passage can be controlled by controlling the degree of shielding the heater by the air mixing damper under the condition that the heat source is not started, such as the heater power supply or the warm water supplement function is in a closed or low power consumption state, so that the air volume proportion sent to each seat is adjusted, different air mixing degrees of each seat are realized, and different user required temperatures of the left seat and the right seat are further met.
In the present invention, when the difference is within the achievable range, 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 blowing passage.
In the present invention, the control unit may control the air mixing damper on the side of the left and right seats where the user-requested temperature is high to move in a direction not to block the heater in the cross-sectional direction of the air blowing passage.
In the present invention, the air mixing damper may be movable between: a first position in which the heater is completely shielded and a portion of the air supply path other than the heater is not shielded; and a second position where the portion of the air supply path other than the heater is completely shielded without shielding the heater.
In the present invention, when the difference is the upper threshold of the achievable range, the control unit controls the air mixing damper on the side of the left and right seats where the user demand temperature is lower to be located at the first position, and controls the air mixing damper on the side of the left and right seats where the user demand temperature is higher to be located at the second position.
In the present invention, the ventilation area near the air supply opening of the air supply passage may be changed by adjusting the angle, size, and/or shape of the baffle plate.
The invention also provides a refrigeration control method using the air conditioning system, which performs the following control when the user required temperature of at least left and right seats has a difference in the refrigeration mode: and judging whether the difference value is within an achievable range in which different user required temperatures can be achieved only by adjusting the air mixing air door, and when the difference value is determined to be within the achievable range, controlling the air mixing air door on the side with higher user required temperature to move towards the direction which does not shield the heater in the cross section direction of the air supply passage compared with the air mixing air door on the side with lower user required temperature by the control unit.
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 arranging additional parts when the temperature required by the user of at least the left seat and the right seat is different.
Drawings
Fig. 1 is a schematic configuration diagram of an air conditioning system S according to an embodiment of the present invention;
fig. 2 is a flow chart of cooling control of the air conditioning system S according to the 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 a heater on the achievable range;
description of the symbols:
s, an air conditioning system;
1, an evaporator;
2, a heater;
3. 4, a mixed air door;
5. 6 air supply path;
8 a flow guide plate;
10 air inlet channel;
11. 12 air supply outlet.
Detailed Description
The present invention is further described below in conjunction with the following embodiments, which are to be understood as merely illustrative, and not restrictive, of the invention. The same or corresponding reference numerals denote the same components in the respective drawings, and redundant description is omitted.
As shown in the schematic configuration diagram of fig. 1, an air conditioning system S according to an embodiment of the present invention includes: 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 and 6; a heater 2 installed at substantially the same position in the air blowing passages 5, 6, and having a cross-sectional area in the air blowing passages 5, 6 smaller than that of the air blowing passages 5, 6; a plurality of air mixing dampers 3, 4 which are installed in the respective air blowing passages 5, 6 at upstream of the heater 2 and which can block the heater 2, and the plurality of air mixing dampers 3, 4 are formed so as to be movable independently of each other in the cross-sectional direction of the air blowing passages 5, 6; a baffle plate 8 provided near the air blowing ports 11 and 12 of the air blowing passages 5 and 6 and downstream of the heater; and a control unit (not shown) for controlling the air mixing dampers 3 and 4 to move in the cross-sectional direction of the air blowing passages 5 and 6 in a direction not to block the heater 2 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 air outside the vehicle and send the air into the in-vehicle air conditioning system for air conditioning, the air intake passage 10 is branched into the air supply passages 5, 6 at the downstream side, and the air supply passages 5, 6 communicate with the vehicle compartment to blow air-conditioned air at a proper temperature into the vehicle compartment to achieve a temperature required by the user. In the present embodiment, the one air intake passage and the two air blowing passages are exemplified, and in this example, the two air blowing passages respectively lead 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 intake passage 10 for heat exchange with the outside air, and the low-temperature condensed liquid inside the evaporator is gasified to absorb heat to achieve the refrigeration effect.
The heater 2 is attached to the air blowing passages 5, 6, and in the present embodiment, the heater 2 is formed so as to be shared by the two air blowing passages 5, 6, and so that the cross-sectional area in each air blowing passage 5, 6 is smaller than the cross-sectional area of each air blowing passage 5, 6 itself, but the present invention is not limited to the configuration shown in the present embodiment, and as long as the heater 2 is located at substantially the same position in the upstream and downstream directions, the specific arrangement thereof can be freely selected according to actual circumstances. The air mixing dampers 3 and 4 are mounted on the air supply passages 5 and 6 in a one-to-one correspondence with each other at positions slightly upstream of the heater 2, and are configured to be independently movable in the cross-sectional direction of the air supply passages 5 and 6 to adjust the flow rate and the direction of air in the passages. In the present embodiment, the air mix dampers 3 and 4 can be moved to completely shield the heater 2 or not to completely shield the heater 2, that is, the air mix dampers 3 and 4 can be moved between a first position where the air mix dampers completely shield the heater 2 and do not shield the portion of the air supply passages 5 and 6 other than the heater 2 and a second position where the air mix dampers completely shield the portion of the air supply passages 5 and 6 other than the heater 2 and do not shield the heater 2. However, the sizes, shapes, moving manners, and the like of the air mixing dampers 3 and 4 are not limited to the illustrated embodiments and the above description.
The baffle plate 8 is attached to the vicinity of the air blowing ports 11, 12 on the downstream side of the heater 2, is attached in one-to-one correspondence with the air blowing passages 5, 6, and is independently adjustable in angle and direction, and the positions, orientations, and the like of the air blowing ports 11, 12 correspond to the left and right seats, and the ventilation area in the vicinity of the air blowing ports 11, 12 of the air blowing passages 5, 6 can be changed by adjusting the angle, size, and/or shape of the baffle plate 8. Specifically, during the refrigeration working condition, the air outside the vehicle is sucked through the air inlet passage 10, then is refrigerated through the evaporator 1, is uniformly dispersed into the air supply passages 5 and 6 which are branched at the downstream side, continues to flow downstream, reaches the air supply outlets 11 and 12 through the air flow paths defined by the matching of the air mixing dampers 3 and 4 and the heater 2, is contacted with the guide plate 8, and finally is blown into the vehicle room.
With the above configuration of the present invention, in the cooling mode, when there is a difference in the user demand temperature 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 temperature adjustment a plurality of times without starting the heat source. In detail, according to different user demand temperatures of the left and right seats, the evaporator 1 is used for refrigerating the sucked external air integrally until the air temperature reaches the temperature of the lower side of the user demand temperatures, the refrigerated air uniformly 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 air 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 air door on the air supply passage on the higher side of the user demand temperatures moves in the direction which does not shield the heater 2. Details of the related control method will be described later.
After the cooled air, that is, the air whose actual temperature is the lower temperature of the user's required temperature enters the two air supply passages 5 and 6, respectively, in the air supply passage on the side of the user's required temperature (taking fig. 1 as an example, hereinafter, the air supply passage is collectively referred to as the air supply passage 5), the corresponding air mixing damper 3 completely shields the portion of the heater 2 located in the passage, so that the air directly reaches the air supply outlet 11 without passing through the heater 2, and the air is guided by the guide plate 8 to provide the air volume and temperature (lower temperature) expected by the user on the seat.
On the other hand, in the air blowing passage on the side where the user's required temperature is high (similarly, fig. 1 is taken as an example, hereinafter, this air blowing passage is collectively referred to as an air blowing passage 6), the corresponding air mixing damper 4 blocks the portion other than the heater 2 in this passage within a certain range according to fig. 3 described later, so that a part or all of the air in this passage passes through the heater 2 and reaches the air blowing 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 small amount of cold air reaches the air blowing port 12 at the same air blowing power, and the user in this seat feels a high temperature due to a small amount of cold air, thereby obtaining the air volume and temperature (high temperature) expected by this user. Further, the user on the seat can adjust the deflector 8 to change the shape of the blowing paths at the air outlets 11 and 12 (the shape is not specified in the present invention), thereby further adjusting the amount of air fed to the seat and increasing the sensible temperature.
According to the present invention, the air mixing dampers 3 and 4 are moved in the cross-sectional direction to change the flow of air in the air supply passages 5 and 6, and the air mixing dampers on the side where the temperature required by the user is high are moved in the direction not to block the heater 2, so that the air in the air supply passages 5 and 6 is inevitably passed through the heater 2 and then circulated to the outside, and the ventilation resistance R of the air thus circulated is increased, that is, the larger the amount of air circulated from the heater 2, the larger the ventilation resistance R, the smaller the amount of air reaching each seat with the same air supply capacity. That is, the ventilation resistance R in the air supply passages 5 and 6 can be controlled by controlling the degree of shielding the heater 2 by the air mixing dampers 3 and 4 under the condition that the heat source is not started, such as the power supply of the heater 2 or the warm water supplement function is turned off or in a low power consumption state, so that the air volume ratio to be supplied to each seat can be adjusted, thereby realizing different air mixing degrees of each seat and further meeting different user required temperatures of the left and right seats.
A cooling control method performed by the air conditioning system S according to the present invention will be described in further detail with reference to the accompanying drawings. It will also be understood that the following is illustrative of the present invention and is not to be construed as limiting the scope of the invention, as numerous insubstantial modifications and adaptations of the invention will now occur to those skilled in the art based on the teachings herein. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Fig. 2 is a flow chart of cooling control of the air conditioning system S according to the embodiment of the present invention. As shown in the flowchart of fig. 2, when the user sets the user demand temperatures of different seats (i.e., when there is a difference in the user demand temperatures of a plurality of seats), the control unit performs the relevant control. The preset threshold T0 mentioned later means that the temperature required by the user of different seats can be satisfied by adjusting the positions of the air mixing dampers 3 and 4 only when the difference is less than or equal to the threshold T0 in the cooling mode. That is, when the difference is less than the threshold T0, the achievable range between the user demand temperatures of different seats can be satisfied by adjusting only the positions of the air mix dampers 3 and 4.
In step S1, the control unit determines whether each seat (at least left and right seats) is required for cooling based on the actual temperature in the vehicle interior, the amount of solar radiation bias, or the like, and if it is determined not, the control unit proceeds to step S5, i.e., the normal air conditioning mode, for example, the heater 2 is turned on, and if it is determined not, the control unit proceeds to step S2.
The control unit determines whether or not there is a temperature difference T in the user required temperature for each seat in step S2, and if no, the control unit proceeds to step S5, i.e., the normal air conditioning mode, for example, the heater 2 is turned on or the air mix dampers 3 and 4 are synchronously adjusted, and if yes, the control unit proceeds to step S3.
The control unit determines in step S3 whether or not the temperature difference T between the user demand temperatures of the respective seats is equal to or less than the threshold T0, and if no, the routine air conditioning mode is started in step S5, that is, the heater 2 is turned on, for example, and if yes, the routine air conditioning mode is started in step S4.
The control unit performs energy-saving air conditioning mode control (i.e., energy-saving control) unique to the air conditioning system of the present invention described above in step S4, and controls the air flow rate through the heater 2 by adjusting the movement position SW of the air mix dampers 3, 4 according to the correspondence relationship shown in fig. 3 and 4, thereby realizing the temperature difference T between seats.
The control unit executes the ordinary air conditioning mode control in the art (i.e., ordinary control) in step S5.
For example, in this example, if the threshold T0 is 2 ℃, the current vehicle interior ambient temperature is 30 ℃, the user demand temperature is 25 ℃ for the driver seat user, and the user demand temperature is 26 ℃ for the passenger seat user, if it is determined in step S1 that there is a cooling demand, the routine proceeds to step S2, if it is determined in step S2 that there is a temperature difference T =1 ℃, the routine proceeds to step S3, and if it is determined in step S3 that the temperature difference T =1 ℃ is less than the threshold T0=2 ℃, that is, within the achievable range, the heater 2 is not activated, and only the position SW of the air mixing damper on the driver seat side (the side on which the set temperature is higher) is adjusted according to the correspondence shown in fig. 3 and 4 to control the degree of shielding the heater 2 at a predetermined ratio, and further the ventilation resistance R is controlled to control the amount of air blown through the air blowing ports 11 and 12 at the same power, thereby meeting different user required temperatures.
The control unit determines in step S6 whether the time for executing the normal control or the energy saving control has reached a predetermined period, and if not, the control unit stays in step S5 or step S4 to continue the control, and if yes, the control unit proceeds to step S7.
The control unit re-executes the above determination in step S7 based on the current user-set required temperature, solar radiation amount, and/or environmental conditions (outside air temperature, blower air-supply amount, air-supply outlet mode, etc.).
In the invention, extra energy consumption and poor user physical examination caused by switching the air conditioning mode too frequently 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 of meeting the energy-saving condition by setting the cycle judgment.
Fig. 3 is a diagram showing the correlation between the position SW of the air mix dampers 3, 4 and the threshold value T0. Fig. 4 is a graph showing the correlation of the ventilation resistance R of the heater 2 with the threshold value T0. Hereinafter, the relationship between the position SW of the air mixing damper in the air blowing passage and the threshold T0 and the relationship between the ventilation resistance R of the heater 2 and the threshold T0 in the control process of the control unit will be described in detail with reference to fig. 3 and 4. The position SW of the air mixing damper is moved to change the degree of shielding 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 maximized.
In the present invention, the relationship between the temperature difference T and the position SW of the air mixing damper in the air supply passage may be preset according to real vehicle data under different environmental conditions, for example, as shown in fig. 3, the threshold value T0=2 ℃, when the temperature difference T =1 ℃, the corresponding position SW =50%, at this time, the control unit controls the air mixing damper corresponding to the side with higher user required temperature to move in the direction not to shield the heater 2 until the shielding degree becomes 50%, and when the temperature difference T = T0=2 ℃, the corresponding position SW =100%, at this time, the control unit controls the air mixing damper corresponding to the side with higher user required temperature to move in the direction not to shield the heater 2 until the shielding degree becomes 0%. Further, for example, the actual vehicle data may be in different states such as the amount of solar radiation, the outside air temperature, the inside room temperature, the air volume, and the passenger temperature. In the present embodiment, the relationship between the temperature difference T and the position SW of the air mixing damper in the air blowing passage obtained from the actual vehicle data is substantially linear, but this is merely an example, and the relationship curve is different for different vehicle types or environmental conditions, and is not limited to the linear relationship.
Further, the ventilation resistance R by the heater 2 varies depending on the degree of shielding of the heater 2 by the air mixing damper, and as the heater is shielded less, the ventilation resistance R of the heater becomes larger, and the influence of the larger ventilation resistance R on the air volume becomes larger, so that as shown in fig. 4, the larger ventilation resistance R becomes, the closer the difference in the user required temperature that can be realized becomes to the threshold value T0.
In the present invention, a threshold T0 is set based on real vehicle data, and specifically, a relationship between a temperature difference T and a position SW of a ventilation damper in an air blowing passage is actually measured on a vehicle under conditions of different amounts of insolation, outside air temperature, inside room temperature, air volume, and passenger body temperature, and 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 increase the ventilation resistance R + of the blowing passage to increase the amount of change in the air volume and fundamentally increase the threshold T0. The means for increasing the ventilation resistance R + of the air blowing passage may be realized by changing the shape or size of the structure, for example, by reducing the effective ventilation area of the air blowing passage or by increasing the air blowing path. This can further save energy.
Therefore, according to the invention, the air supply quantity of at least left and right seats is controlled by controlling the air quantity entering the heater 2 without starting the heater so as to realize the sensible temperature difference, no additional part is required, the existing spatial 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 air in the corresponding passage of each seat passing through the heater is controlled by adjusting the position of the air mixing damper so as to realize different user required temperatures within a certain range in the refrigeration mode.
The above embodiments are intended to illustrate and not to limit the scope of the invention, which is defined by the claims, but rather by the claims, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (7)
1. An air conditioning system is provided with:
an air intake passage;
a plurality of air supply passages branched from the air inlet passage;
an evaporator installed in the air intake passage at a position upstream of the air supply passage;
a heater installed at substantially the same position in the plurality of air blowing passages, and having a cross-sectional area in the air blowing passage smaller than that of the air blowing passage;
a plurality of air mixing dampers which are installed in the respective air blowing passages at positions corresponding to upstream positions of the heaters and which can shield the heaters, and which are formed to be movable independently of each other in a cross-sectional direction of the air blowing passages; and
a guide plate 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 preparation method is characterized in that,
and a control unit for controlling the air mixing damper to move in the direction of the cross section of the air supply passage to not block the heater when the temperature required by the users of the plurality of seats is different in the cooling mode.
2. The air conditioning system of claim 1,
when the difference is less than or equal to a predetermined threshold, the control unit controls the air mixing damper to move in a direction not to block the heater in a cross-sectional direction of the air supply passage.
3. The air conditioning system of claim 2,
the control unit controls the air mixing air doors on the higher-temperature side of the user requirements of the seats to move in the direction of not shielding the heater in the cross section direction of the air supply passage.
4. Air conditioning system according to claim 3,
the mixing damper is movable between:
a first position in which the heater is completely shielded and a portion of the air supply path other than the heater is not shielded; and
a second position where the portion of the air supply passage other than the heater is completely shielded without shielding the heater.
5. The air conditioning system of claim 4,
when the difference value is below the threshold value, the control unit controls the air mixing air door on the lower side of the user requirement temperature of the plurality of seats to be located at the first position, and controls the air mixing air door on the higher side of the user requirement temperature of the plurality of seats to be located at the second position.
6. Air conditioning system according to any of claims 1 to 5,
the ventilation area near the air supply outlet of the air supply passage is changed by adjusting the angle, the size and/or the shape of the guide plate.
7. 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 6, wherein in the cooling mode, when there is a difference in the user demand temperatures of the plurality of seats, the following control is performed:
and judging whether the difference value is below a preset threshold value or not, and when the difference value is below the threshold value, controlling the air mixing air door on the side with higher user required temperature to move towards the direction which does not shield the heater in the cross section direction of the air supply passage compared with the air mixing air door on the side with lower user required temperature by the control unit.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112810393A true CN112810393A (en) | 2021-05-18 |
| CN112810393B 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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