CN100443812C - Air return temperature regulating sedan air conditioner - Google Patents
Air return temperature regulating sedan air conditioner Download PDFInfo
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- CN100443812C CN100443812C CNB2006100196366A CN200610019636A CN100443812C CN 100443812 C CN100443812 C CN 100443812C CN B2006100196366 A CNB2006100196366 A CN B2006100196366A CN 200610019636 A CN200610019636 A CN 200610019636A CN 100443812 C CN100443812 C CN 100443812C
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Abstract
The invention related to air condition of saloon car, especially to air return thermoregulated air condition of saloon car. The air condition includes air intake dual duct, refrigeration air duct, and air out duct. A blower fan is setup in the air intake dual duct. Air inlet of air intake dual duct is composed of fresh air inlet, air return inlet, and regulating door for fresh air setup between the fresh air inlet and the air return inlet. Evaporator of air conditioning unit is setup in the refrigeration air duct. Characters are that conduction through air duct insulated from refrigeration air duct is added between the air intake dual duct and air out duct. Air outlet of the conduction through air duct, and air outlet of the refrigeration air duct are led to the air out duct. The invention is in favor of reducing energy consumption caused by heating blast of air condition repeatedly.
Description
Technical field
The present invention relates to sedan air conditioner, particularly a kind of air return temperature regulating sedan air conditioner that is used to regulate the air-conditioning wind pushing temperature.
Background technology
The integrated car automatic air condition of existing changes in temperature, owing to be subjected to the restriction of space structure and degree of regulation, the schematic diagram of structure of its air-supply heating temperature adjustment aircondition and organigram are to be made of the air intake mixing air channel 1 that is communicated with successively, refrigeration air channel 2 and air-out air channel 3 as shown in figures 1 and 3 basically; The air intake mixing is provided with blower fan 11 in the air channel, the air inlet in air intake mixing air channel by the fresh inlet 12 that is used to import additional fresh air, be used to import the return air inlet 13 of circulating air and be located at fresh inlet and return air inlet between new wind damper 14 form; Total air circulation is by the rotational speed regulation of blower fan, and new wind is set up by new wind damper with the air quantity ratio of return air.Refrigeration is provided with the evaporimeter 21 of aircondition in the air channel, and the air outlet in refrigeration air channel 2 comprises the straightthrough port 23 that directly is communicated with air-out air channel 3 and the heating port 24 of another heater 22 of flowing through.Its air cooling processing process is: after earlier circulating air and the fresh air that replenishes being mixed in air intake mixing air channel, the dehumidifying that cools in the refrigeration air channel becomes cold wind, following a part of cold wind directly enters in the air-out air channel from straightthrough port 23, another part cold wind heater via 22 heating backs enter in the air-out air channel from heating port 24 mixes with cold wind, (mixed proportion of cold and hot wind is regulated by air door 51) makes the suitable air of formation temperature in the air-out air channel, sends (psychrometric chart of air handling process is seen Fig. 2) from air outlet at last.The shortcoming of this air-treatment mode is: (1) is in order to reach the comfort standard of air-conditioning, the temperature requirement of air-supply is more than 10～15 ℃ in the car, and evaporimeter air outlet temperature is generally between 2～7 ℃, the heating temperature difference is 8～12 ℃, in order to regulate comfortable wind pushing temperature, air is undertaken passing through the heater heat temperature raising again behind the cool-down dehumidification by evaporimeter, has wasted a large amount of colds; (2) air inflow of the air inflow of fresh air and circulating air is not accurately adjusted, and therefore often replenishes excessive fresh air (hereinafter to be referred as new wind), causes the excessive energy consumption of new wind.The air-conditioning of car power consumption at present probably accounts for about 10% of automobile total energy consumption, and wherein, heat temperature raising energy consumption duty is transferred 20%～30% of energy consumption, and excessive novel wind energy consumption accounts for about 10%, and invalid energy consumption duty is transferred 30%～40% of energy consumption.
In the past, its comfortableness aspect was mainly paid close attention in the design of car automatic air condition, and energy-conservation aspect is not dropped into too many attention.Become international today of serious society and economy problem in oil crisis, how serious day by day along with the rising all the way of gas price and problem of environmental pollution further reduces the air conditioning for automobiles oil consumption and need to have become the problem that conscientiously solves.
Summary of the invention
The invention provides a kind of air return temperature regulating sedan air conditioner, the aperture size of the straightthrough port in its energy Synchronization Control refrigeration air channel and the air outlet in straight-through air channel, thereby not only when refrigeration, can regulate the flow in straight-through air channel and refrigeration air channel, and when isothermal dehumidifying or heating, can make the opening degree of the air outlet in the opening degree of straightthrough port in refrigeration air channel and straight-through air channel reach minimum of a value simultaneously, guarantee to have enough air mass flows to flow through heater, guarantee to add thermal effect.
Technical scheme of the present invention is to constitute like this: it comprises air intake mixing air channel, refrigeration air channel and the air-out air channel that is communicated with successively; Described air intake mixing is provided with blower fan in the air channel, the air inlet in air intake mixing air channel by fresh inlet, return air inlet and be located at fresh inlet and return air inlet between new wind damper form; Be provided with the evaporimeter of aircondition in the described refrigeration air channel, it is characterized in that: also be provided with the straight-through air channel that isolates with the air channel of freezing between described air intake mixing air channel and the air-out air channel, the air outlet in straight-through air channel leads in the air-out air channel with the air outlet in refrigeration air channel; The air outlet in described refrigeration air channel comprises the heating port of the straightthrough port that directly is communicated with the air-out air channel and another heater of flowing through; Be hinged with a double valve sheet damper between the air outlet in described straightthrough port and straight-through air channel, this double valve sheet damper is made of a pair of Linkage valve plate that is crossed as certain angle that is fixed in the rotating shaft, and two Linkage valve plates are located at the opening degree of the straightthrough port in the opening degree of the air outlet that is used for regulating respectively straight-through air channel on the straightthrough port in the air outlet in straight-through air channel and refrigeration air channel and refrigeration air channel respectively.
Than prior art, technique scheme of the present invention not only helps reducing because of the air-conditioning air-supply repeated to heat the energy loss that causes; And the aperture size of the air outlet in the straightthrough port in energy Synchronization Control refrigeration air channel and straight-through air channel, thereby when refrigeration, help regulating the flow that leads directly to air channel and refrigeration air channel on the one hand, reach temperature adjustment purpose preferably; On the other hand when isothermal dehumidifying (spring and autumn demist) or heating (winter), can make the opening degree of the air outlet in the opening degree of straightthrough port in refrigeration air channel and straight-through air channel reach minimum of a value simultaneously, guarantee to have enough air mass flows flow through heater (maximum that flows through the air mass flow of heater can reach flow through refrigeration air channel total air 30%), guarantee to add thermal effect.
In order accurately to control the air quantity in the above-mentioned straight-through air channel of flowing through, thereby the cold wind of adjustment process evaporator cools and mixed temperature without overcooled former wind, to reach the leaving air temp of the most comfortable, the further improvement of technical solution of the present invention is as follows: the air outlet in described straight-through air channel is provided with the opening degree that the Flow-rate adjustment barrier that cooperates with a valve block of double valve sheet damper is used to regulate direct ventilation road air outlet; Described air-out is provided with temperature sensor in the air channel, this temperature sensor is connected with the control device of the opening angle that is used to control double valve sheet damper relative discharge, and this temperature sensor is regulated for the aperture of straight-through air channel double valve sheet damper feedback signal is provided.
In order accurately to control the intake of new wind, adjust the air intake ratio of new wind and return air, thereby reduce the loss of excessive novel wind energy, the further improvement of technical solution of the present invention is as follows: also be provided with the opening degree that the Flow-rate adjustment barrier that cooperates with new wind damper is used to regulate fresh inlet on the described fresh inlet, described air intake mixing also is provided with temperature sensor in the air channel, this temperature sensor is connected with the control device of the opening angle that is used to control new wind damper relative discharge, and this temperature sensor is regulated for the aperture of new wind damper feedback signal is provided.
The consumption of the cold that causes in order to reduce heating, the further improvement of technical solution of the present invention is as follows: described heater is equipped with electric switching valve in add on hot fluid (automobile engine cooling liquid) circulation line joining with it, described electric switching valve be used to control the control device that electric switching valve opens and closes and be connected.Come to add in the control heater flowing of hot fluid by electric switching valve, thus during the conversion of control air-conditioning between operational modes such as refrigeration, heating, dehumidifying the heater heater can opening and closing.
Than prior art, the present invention has following advantage: (1) is owing to set up the straight-through air channel of being led to the air-out air channel by air intake mixing air channel, can directly utilize the flow through former wind of not refrigeration in straight-through air channel of a part to mix with the cold wind through freezing in the refrigeration air channel of flowing through, mixed leaving air temp is raise, thereby do not need additionally the cold air after evaporator cools to be heated by heater, help reducing the loss of cold, and can reduce by the air quantity of evaporator cools, refrigerating capacity can reduce, both having reduced the loss of air conditioner energy (compares with traditional return air heating temperature adjustment aircondition, can save air conditioner energy 30～40%), reduced the volume of evaporimeter again, the condenser area, compressor air-discharging amount (assembly of aircondition) helps reducing cost, weight reduction, the convenient installation; (2) owing on straight-through air channel, be provided with the Flow-rate adjustment barrier that cooperates with a valve block of double valve sheet damper, and temperature signal is passed to control device by the temperature sensor on the air-out air channel, accurately control the opening angle that double valve sheet damper relative discharge is regulated, help regulating the ratio of wind with the wind that does not need to cool off of needs cooling, thereby reach accurate adjustment through the wind of supercooling and purpose without the mixed leaving air temp of overcooled wind; (3) owing to be provided with the opening degree that the Flow-rate adjustment barrier that cooperates with new wind damper is used to regulate fresh inlet at fresh inlet, and temperature signal is passed to control device by temperature sensor, to adjust the opening angle of new wind damper relative discharge, therefore can accurately regulate new wind intake, avoid causing the energy consumption of excessive new wind; (4) owing on the heating fluid circulating line, be provided with electric switching valve with opening and closing heater function, realized that heater and evaporimeter block placement in the direct nothing of refrigeration in the air channel, reduce the air channel and taken up room, improved runner, reduced gas-flow resistance; (5) can dwindle the flow adjustment range of blower fan, improve the circular flow efficient of blower fan; (6) can reduce supply air temperature difference, improve the comfort level in the passenger cabin; (7) compare with traditional return air heating temperature adjustment aircondition, the present invention's moisture removal in middle low-humidity environment can reduce, and the balanced relative humidity point of air condition point can move to right by isothermal in the passenger cabin, and operating mode remains unchanged under high humidity environment, has improved comfort level.
Description of drawings
Fig. 1 is the schematic diagram of structure of existing return air heating temperature adjustment aircondition.
Fig. 2 is the air handling process psychrometric chart of existing return air heating temperature adjustment aircondition.
Fig. 3 is the organigram of existing return air heating temperature adjustment aircondition.
Fig. 4 is a schematic diagram of structure of the present invention.
Fig. 5 is an air handling process psychrometric chart of the present invention.
Fig. 6 is an embodiment of the invention organigram.
Fig. 7 is Flow-rate adjustment barrier and damper engagement formation schematic diagram.
Fig. 8 is the front organigram of a kind of Flow-rate adjustment barrier of adopting of the present invention.
Fig. 9 is common damper and the aperture-air quantity curve contrast schematic diagram that has added the damper behind the Flow-rate adjustment barrier.
Figure 10 is a kind of double valve sheet damper organigram that the present invention adopts.
Label declaration: 1, air intake mixing air channel, 11, blower fan, 12, fresh inlet, 13, return air inlet, 14, new wind damper, 15, the Flow-rate adjustment barrier, 16, temperature sensor, 2, the refrigeration air channel, 21, evaporimeter, 22, heater, 23, the straightthrough port in refrigeration air channel, 24, the heating port in refrigeration air channel, 25 electric switching valves, 26, the heating fluid circulating line, 3, the air-out air channel, 31, temperature sensor, 32, the air outlet in air-out air channel, 4, straight-through air channel, 41, the double valve sheet damper, 42, the Flow-rate adjustment barrier, 5, the back track of leading to the car trunk, 51, heater ventilation damper.
Aerial temperature and humidity state point in N, the passenger cabin, W, passenger cabin outer air humiture state point, C, new wind return air mixed once aerial temperature and humidity state point, L, evaporator outlet cooling aerial temperature and humidity state point, O, air-out air channel air outlet aerial temperature and humidity state point.
The aperture of a, common damper-air quantity curve, has added the aperture-air quantity curve of the damper behind the Flow-rate adjustment barrier at b.
The specific embodiment
It comprises air intake mixing air channel 1, refrigeration air channel 2 and the air-out air channel 3 that is communicated with successively the specific embodiment of the invention; Be provided with blower fan 11 in the described air intake mixing air channel 1, the air inlet in air intake mixing air channel by fresh inlet 12, return air inlet 13 and be located at fresh inlet and return air inlet between new wind damper 14 form; Be provided with the evaporimeter 21 of aircondition in the described refrigeration air channel 2, it is characterized in that: set up the straight-through air channel 4 that isolates with the refrigeration air channel between described air intake mixing air channel 1 and the air-out air channel 3, the air outlet 43 in described straight-through air channel 4 leads in the air-out air channel with the air outlet in refrigeration air channel 2.As shown in Figure 4, the air outlet in straight-through air channel 4 can be located on the blower housing shell wall of blower fan 11 and evaporimeter adjacent regions, and its opening can be arranged on towards air-out air channel 3 or the optional position in air-out air channel 3, as shown in Figure 6.
The air outlet in described refrigeration air channel 2 comprises the heating port 24 of the straightthrough port that directly is communicated with air-out air channel 3 23 and another heater 22 of flowing through, be hinged with a double valve sheet damper 41 between the air outlet 43 in described straightthrough port 23 and straight-through air channel, this double valve sheet damper 41 is made of a pair of Linkage valve plate that is crossed as certain angle that is fixed in the rotating shaft, and two Linkage valve plates are located at the opening degree of the straightthrough port 23 in the opening degree of the air outlet 43 that is used for regulating respectively straight-through air channel on the straightthrough port in the air outlet in straight-through air channel and refrigeration air channel and refrigeration air channel respectively.
The air outlet 43 in described straight-through air channel is provided with the opening degree that the Flow-rate adjustment barrier 42 that cooperates with a valve block of double valve sheet damper 41 is used to regulate direct ventilation road air outlet 43; Described air-out is provided with temperature sensor 31 in the air channel, this temperature sensor 31 is connected with the control device of the opening angle that is used to control double valve sheet damper 41 relative discharges, and this temperature sensor is regulated for the aperture of straight-through air channel double valve sheet damper feedback signal is provided.
During concrete enforcement, the aperture of above-mentioned double valve sheet damper 41 is regulated and can be calculated according to following formula:
G
c×(T
c-T
o)＝G
s×(T
s-T
o)
T
s＝T
n-ΔT
S
w＝f(T
s，T
c，T
o)
In the following formula: G
cFlow through and lead directly to the air quantity in air channel 4, can be by 41 controls of double valve sheet damper;
G
sTotal air output of the air outlet 32 in air-out air channel 3 is mainly regulated by blower fan 11 rotating speeds and double valve sheet damper 41, and its quantitative relation is demarcated by actual measurement;
Q car cabin heat load mainly determines that by the speed of a motor vehicle, setting passenger cabin design temperature, car outer air temperature, solar radiation and occupant's number its quantitative relation is demarcated by actual measurement to fixing vehicle;
C
pPressurization by compressed air specific heat;
T
oThe evaporator air outlet temperature of aircondition is by temperature sensor measurement;
T
sThe air outlet air themperature is determined by comfortable equation;
T
cThe temperature of mixing air in the air intake mixing air channel, it determines jointly that by the aperture of car outer air temperature, return air inlet air themperature and new wind damper 14 its value can be by being predicted by temperature sensor;
T
nDesign temperature in the passenger cabin, its value is by being predicted by temperature sensor;
Δ T supply air temperature difference determines that by the comfortableness condition its value can be by being predicted by temperature sensor;
S
wThe aperture of double valve sheet damper 41, the functional relation of decision aperture is determined by experiment;
The opening degree of above-mentioned refrigeration air channel straightthrough port 23 does not need too accurate, if the flow that guarantees when aperture reaches minimum of a value, to flow through heater and the flow specific energy that flows through evaporimeter near or reach about 0.4.
Control the determined air mass flow of aperture of double valve sheet damper 41 by above formula draw control algoritic module, can promote wind pushing temperature near setting value, thereby realize higher amenity standards (dwindling supply air temperature difference), the higher supply air temperature difference (as 18～20 ℃ of degree) of employing is blown and can additionally do not increased air conditioner load in the specific implementation.
Also be provided with the opening degree that the Flow-rate adjustment barrier 15 that cooperates with new wind damper 14 is used to regulate fresh inlet on the described fresh inlet 12, described air intake mixing also is provided with temperature sensor 16 in the air channel, and this temperature sensor is connected with the control device of the opening angle that is used to control new wind damper 14 relative discharges.This temperature sensor is regulated for the aperture of new wind damper feedback signal is provided.
During concrete enforcement, can calculate the minimum resh air requirement of fresh inlet by following formula:
G
nw×(T
nw-T
h)＝G
s×(T
c-T
h)
G
nw+G
L＝G
BN
S
w＝f(T
h，T
nw，T
c)
In the following formula: G
NwFrom the resh air requirement that fresh inlet enters, can be by new wind damper 14 controls;
G
sTotal air output of the air outlet 32 in air-out air channel 3 is mainly regulated by blower fan 11 rotating speeds and double valve sheet damper 41, and its quantitative relation is demarcated by actual measurement;
G
LCar passenger cabin inleakage is determined by the speed of a motor vehicle mainly that to fixing vehicle its quantitative relation is demarcated by actual measurement;
G
BNTotal fresh-air ventilation amount in the car passenger cabin.Determine jointly by occupant's number, relevant sanitary standard and amenity standards;
T
NwCar outer air temperature is by temperature sensor measurement;
T
hThe return air inlet air themperature is by temperature sensor measurement;
T
cThe temperature of mixing air in the air intake mixing air channel, it determines jointly that by the aperture of car outer air temperature, return air inlet air themperature and new wind damper 14 its value can be predicted by temperature sensor;
S
wThe aperture of new wind damper 14, the functional relation of decision aperture is determined by experiment;
Control the aperture of new wind damper 14 by above formula draw control algoritic module, new wind air inflow is remained near the best resh air requirement.
Described heater 22 is equipped with electric switching valve 25 in add on hot fluid (automobile engine cooling liquid) circulation line 26 joining with it, described electric switching valve be used to control the control device that electric switching valve opens and closes and be connected.Come to add in the control heater flowing of hot fluid by electric switching valve, thus the opening and closing of heater heating function during the conversion of control air-conditioning between operational modes such as refrigeration, heating, dehumidifying.
When need carry out isothermal dehumidification processing to air (spring and autumn demist), mixed air still can't reach suitable wind pushing temperature in the air-out air channel after air-treatment, can open electric switching valve 25 this moment, start heater 22, send again after making portion of air by the heater heating, so that reach suitable wind pushing temperature.When ambient temperature too low (winter, the early spring or late autumn) in the time of need heating, can close compressor of air conditioner this moment, opens electric switching valve 25, starts heater 22, sends after making portion of air by the heater heating, so that reach suitable wind pushing temperature again.In the normal state, electric switching valve 25 all is in closed condition.
An important difference of the present invention and traditional return air heating temperature adjustment aircondition is: mix wind damper place and all added Flow-rate adjustment barrier (structure as shown in Figure 7 and Figure 8), be used for accurately regulating the ratio that air mixes.The Flow-rate adjustment barrier has changed the flow aperture curve of damper, has improved the adjusting function of damper.The Flow-rate adjustment barrier can be designed to even all distributions as required or be distributed (as shown in Figure 8) to thin by close.Aperture-air quantity the curve of the damper after not establishing the common damper of Flow-rate adjustment barrier and having added the Flow-rate adjustment barrier contrasts as shown in Figure 7, wherein a is the aperture-air quantity curve of common damper, and b is the aperture-air quantity curve that has added the damper behind the Flow-rate adjustment barrier.
Another important difference of the present invention and traditional return air heating temperature adjustment aircondition is: installed electric switching valve 25 additional on the heating fluid circulating line, be used for the heating function of heater is opened and closed.Heater can directly be serially connected in after the evaporimeter, reduce to take up room, reduce gas-flow resistance.
Claims (4)
1. air return temperature regulating sedan air conditioner, it comprises air intake the mixings air channel (1) that is communicated with successively, freeze air channel (2) and air-out air channel (3); Be provided with blower fan (11) in the described air intake mixing air channel (1), the air inlet in air intake mixing air channel by fresh inlet (12), return air inlet (13) and be located at fresh inlet and return air inlet between new wind damper (14) form; Be provided with the evaporimeter (21) of aircondition in the described refrigeration air channel (2), it is characterized in that: also be provided with the straight-through air channel (4) that isolates with the air channel of freezing between described air intake mixing air channel (1) and air-out air channel (3), the air outlet (43) in straight-through air channel (4) leads in the air-out air channel with the air outlet in refrigeration air channel (2); The air outlet in described refrigeration air channel (2) comprises the straightthrough port (23) that directly is communicated with air-out air channel (3) and the heating port (24) of another heater of flowing through (22); Be hinged with a double valve sheet damper (41) between the air outlet (43) in described straightthrough port (23) and straight-through air channel, this double valve sheet damper (41) is made of a pair of Linkage valve plate that is crossed as certain angle that is fixed in the rotating shaft, and two Linkage valve plates are located at the opening degree of the straightthrough port (23) in the opening degree of the air outlet (43) that is used for regulating respectively straight-through air channel on the straightthrough port in the air outlet in straight-through air channel and refrigeration air channel and refrigeration air channel respectively.
2. air return temperature regulating sedan air conditioner according to claim 1 is characterized in that: the air outlet in described straight-through air channel (43) is provided with the opening degree that the Flow-rate adjustment barrier (42) that cooperates with a valve block of double valve sheet damper (41) is used to regulate direct ventilation road air outlet (43); Be provided with temperature sensor (31) in the described air-out air channel, this temperature sensor (31) is connected with the control device that is used to control double valve sheet damper (41) opening angle.
3. air return temperature regulating sedan air conditioner according to claim 1 and 2, it is characterized in that: also be provided with the opening degree that the Flow-rate adjustment barrier (15) that cooperates with new wind damper (14) is used to regulate fresh inlet on the described fresh inlet (12), described air intake mixing also is provided with temperature sensor (16) in the air channel, and this temperature sensor is connected with the control device that is used to control new wind damper (14) opening angle.
4. air return temperature regulating sedan air conditioner according to claim 1 and 2, it is characterized in that: described heater (22) is equipped with electric switching valve (25) on heating fluid circulating line joining with it (26), described electric switching valve be used to control the control device that electric switching valve opens and closes and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100196366A CN100443812C (en) | 2006-07-12 | 2006-07-12 | Air return temperature regulating sedan air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100196366A CN100443812C (en) | 2006-07-12 | 2006-07-12 | Air return temperature regulating sedan air conditioner |
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| CN1900613A CN1900613A (en) | 2007-01-24 |
| CN100443812C true CN100443812C (en) | 2008-12-17 |
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| CNB2006100196366A Expired - Fee Related CN100443812C (en) | 2006-07-12 | 2006-07-12 | Air return temperature regulating sedan air conditioner |
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| KR100303812B1 (en) * | 1999-06-04 | 2001-11-01 | 이영환 | A melody instrument |
| US20050262853A1 (en) * | 2004-05-25 | 2005-12-01 | Salim Munther M | Automotive hvac system and method of operating same utilizing evaporator freezing |
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2006
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| JPS60255522A (en) * | 1984-05-31 | 1985-12-17 | Nippon Denso Co Ltd | Air conditioner for car |
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| CN2298152Y (en) * | 1997-07-16 | 1998-11-25 | 北京弘大汽车空调散热器有限公司 | Jeep air conditioner |
| KR100303812B1 (en) * | 1999-06-04 | 2001-11-01 | 이영환 | A melody instrument |
| US20050262853A1 (en) * | 2004-05-25 | 2005-12-01 | Salim Munther M | Automotive hvac system and method of operating same utilizing evaporator freezing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1900613A (en) | 2007-01-24 |
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