CN103317995B - Air conditioner for vehicles - Google Patents
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- CN103317995B CN103317995B CN201310081829.4A CN201310081829A CN103317995B CN 103317995 B CN103317995 B CN 103317995B CN 201310081829 A CN201310081829 A CN 201310081829A CN 103317995 B CN103317995 B CN 103317995B
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Abstract
The invention discloses a kind of air conditioner for vehicles.Control device (4) and obtain the opening information of mixed gas air-valve (25), when the aperture of mixed gas air-valve (25) is to heat side, this control device (4) makes the delivery feeding to electric heater (23) more than the delivery feeding to this electric heater (23) when the aperture of this mixed gas air-valve (25) is to freeze side.Control device (4) to be configured to: this control device (4) finally determines to feed to the delivery of electric heater (23) according to the aperture of mixed gas air-valve (25) and the temperature that detected by downstream temperature sensor (41).Therefore, when changing the caloric value of electric heater, even if being not provided with regenerative apparatus, it is also possible to the sharp temperature drop of suppression blow out air, it is thus possible to seek air-conditioning equipment miniaturization.
Description
Technical field
The present invention relates to a kind of air conditioner for vehicles being arranged in such as automobile etc..
Background technology
Generally speaking, in the vehicle such as including internal combustion engine, the cooling water circulation air conditioner for vehicles heating idle call air being configured to make internal combustion engine is installed, and in such as electric automobile etc. does not include the vehicle of internal combustion engine, the air conditioner for vehicles (see, for example patent documentation 1) heated idle call air with electric heater is installed.
In the air-conditioning device of patent documentation 1, being provided with electric heater, and be additionally provided with regenerative apparatus in the side, downstream of the air-flow direction of electric heater in the housing introducing idle call air, this regenerative apparatus is powered by external power source and thus accumulation of heat.This air-conditioning device is configured to: according to the passenger heating capacity to the operation change electric heater of temperature adjusting lever, and if the temperature of the side, air-flow direction downstream of electric heater rises to setting, be switched off feeding to the power supply of electric heater in case overheated.Because the air-conditioning device of this patent documentation 1 includes regenerative apparatus, even if so cutting off the power supply feeding to electric heater, it is also possible to suppress the sharp temperature drop of blow out air by making regenerative apparatus heat release.
Patent documentation 1: Japanese Laid-Open Patent Publication 9-86148 publication
Summary of the invention
-invention to solve the technical problem that-
But, when using regenerative apparatus to suppress the sharp temperature drop of blow out air as described in Patent Document 1, it is necessary to ensure that be used for arranging the space of regenerative apparatus, thus air-conditioning larger-scale unit can be caused.
The present invention completes the most in view of the above problems.Its object is to: when changing the heating capacity of electric heater, it is achieved even if being not provided with regenerative apparatus also to be able to suppress the sharp temperature drop of blow out air, seek air-conditioning equipment miniaturization.
-in order to solve the technical scheme of technical problem-
For reaching described purpose, in the present invention, the aperture according to mixed gas air-valve and the temperature by the idle call air after electric heater determine to feed to the delivery of electric heater.
nullThe invention of first aspect is using a kind of air conditioner for vehicles as object，This air conditioner for vehicles includes housing、Electric heater、Mixed gas air-valve、Downstream temperature sensor and control device，Heating paths and bypass path have been internally formed it at this housing，In this heating paths, idle call air is heated，This heating paths of idle call air bypass flows through this bypass path，This electric heater is arranged in this heating paths of described housing，And the idle call air flowing through this heating paths is heated，This mixed gas air-valve is arranged on the inside of described housing，By opening、Close at least one path in described heating paths and described bypass path thus change and flow through the air capacity of described heating paths and flow through the air capacity of described bypass path，The temperature of the blow out air of blowout in this housing is adjusted，This downstream temperature sensor detection temperature by the idle call air after described electric heater，Described electric heater and described mixed gas air-valve are controlled by this control device，It is characterized in that: described control device is configured to this control device and obtains the opening information of described mixed gas air-valve，When the aperture of this mixed gas air-valve is to heat side，This control device makes the delivery feeding to this electric heater more than the delivery feeding to this electric heater when the aperture of this mixed gas air-valve is to freeze side，Described control device is configured to this control device and finally determines to feed to the delivery of described electric heater according to the aperture of described mixed gas air-valve and the temperature that detected by the temperature sensor of described downstream.
According to this structure, when mixed gas air-valve is in the state such as making the aperture of heating paths bigger, when i.e. this mixed gas air-valve is to heat side, the delivery feeding to electric heater compared with when being refrigeration side with this mixed gas air-valve is more, thus heating capacity increases, its result is to be able to ensure that the comfortableness to passenger.
On the other hand, when mixed gas air-valve is in the state such as making the aperture of heating paths less, i.e. this mixed gas air-valve be to freeze side time, when being to heat side with this mixed gas air-valve compared with to feed to the delivery of electric heater less.
When the temperature detected by downstream temperature sensor is higher than set point of temperature, it is possible to reduce the delivery feeding to electric heater.Thus, do not cut off feeding to the power supply of electric heater and i.e. can change heating capacity, thus be no longer necessary to the regenerative apparatus arranged as prior art.
The invention of second aspect is in the invention of first aspect, it is characterized in that: described control device is configured to this control device temperature to being detected by the temperature sensor of described downstream and the first set point of temperature compares, when it has been determined that the temperature that detected by the temperature sensor of described downstream is more than the first set point of temperature, power to described electric heater, heating capacity is made to become the low heating capacity of target heating capacity determined than the aperture according to described mixed gas air-valve, on the other hand, when it has been determined that the temperature that detected by the temperature sensor of described downstream is lower than the first set point of temperature, power to described electric heater, heating capacity is made to become the target heating capacity that the aperture according to described mixed gas air-valve determines.
According to this structure, the temperature being speculated as electric heater when the temperature detected by downstream temperature sensor is more than the first set point of temperature is higher, thus powers to electric heater in this case, makes heating capacity become the heating capacity lower than target heating capacity.In such event, it is possible to suppress the overheated of housing etc..
On the other hand, when it has been determined that the temperature that detected by downstream temperature sensor is lower than the first set point of temperature, causes above-mentioned overheated probability relatively low, thus preferably ensure that heating capacity is powered to electric heater.In such event, it can be ensured that the comfortableness to passenger.
The invention of the third aspect is in the invention of second aspect, it is characterized in that: described control device is configured to this control device temperature to being detected by the temperature sensor of described downstream and second set point of temperature higher than the first set point of temperature compares, when it has been determined that the temperature that detected by the temperature sensor of described downstream is more than the second set point of temperature, cut off the power supply feeding to described electric heater.
According to this structure, when the temperature detected by downstream temperature sensor is more than the second set point of temperature, the probability that electric heater is in superheat state is higher, thus cuts off the power supply feeding to electric heater in this case.In such event, it is possible to suppress the overheated of housing etc..
The invention of fourth aspect is in the invention of the either side in first to the third aspect, it is characterized in that: described air conditioner for vehicles includes upstream side temperature sensor, this upstream side temperature sensor detection temperature by the idle call air before described electric heater, described control device is configured to this control device and compares the temperature and the 3rd set point of temperature that are detected by described upstream side temperature sensor, when it has been determined that the temperature that detected by described upstream side temperature sensor is more than the 3rd set point of temperature, power to described electric heater, heating capacity is made to become the low heating capacity of target heating capacity determined than the aperture according to described mixed gas air-valve.
According to this structure, the value that the temperature of idle call air has become higher it is speculated as when the temperature by the idle call air before electric heater is more than the 3rd set point of temperature, thus even if heating capacity is relatively low in this case can also, therefore power to electric heater, make heating capacity become the heating capacity lower than target heating capacity.In such event, it is possible to reduce power consumption.
The invention of the 5th aspect is in the invention of fourth aspect, it is characterized in that: described air conditioner for vehicles includes heat exchanger for cooling, this heat exchanger for cooling is arranged on the ratio heating paths of described enclosure interior and also proximates on the position of air-flow direction upstream side, idle call air is cooled down by this heat exchanger for cooling, described heat exchanger for cooling is provided with heat exchanger for cooling temperature sensor, this heat exchanger for cooling temperature sensor detects the surface temperature of this heat exchanger for cooling, described heat exchanger for cooling temperature sensor is described upstream side temperature sensor.
According to this structure, because making upstream side temperature sensor with heat exchanger for cooling temperature sensor, it is possible to the increase of suppression component quantity.
nullThe invention of the 6th aspect is in the invention of fourth aspect，It is characterized in that: described air conditioner for vehicles includes room air temperature sensor、Outside air temperature sensor and inner air and outer air switching part，The air themperature of this room air temperature sensor detection car chamber interior，The air themperature of this outside air temperature sensor detection car outdoor，This inner air and outer air switching part selects the air in the air of car chamber interior and the air of car outdoor and is introduced in described housing by the air selected，When the air of car chamber interior being introduced in described housing with described inner air and outer air switching part，Described upstream side temperature sensor is made with described room air temperature sensor，On the other hand，When the air of car outdoor being introduced in described housing with described inner air and outer air switching part，Described upstream side temperature sensor is made with described outside air temperature sensor.
According to this structure, because making upstream side temperature sensor with room air temperature sensor and outside air temperature sensor, it is possible to the increase of suppression component quantity.
The invention of the 7th aspect is in the invention of the either side in the first to the 6th aspect, it is characterized in that: described air conditioner for vehicles includes that current value detects sensor, the detection sensor detection of this current value inputs to the current value of described electric heater, described control device is configured to this control device and powers in the way of making to be become by the described current value detection current value that detects of sensor the state lower than setting, makes the heating capacity of described electric heater increase.
According to this structure, it is possible to dash current (inrushcurrent) value when making electric heater be in low temperature state is relatively low, realizes being easily constructed circuit, and heating capacity can be made to increase, guarantee the comfortableness to passenger.
The invention of eighth aspect is in the invention of the either side in the first to the 7th aspect, it is characterized in that: described control device is configured to this control device and periodically changes the electricity feeding to described electric heater, when making delivery increase, first making delivery increase, then making when have passed through the stipulated time delivery increase again.
According to this structure, it is possible to the dash current value making electric heater is relatively low, it is thus possible to be easily constructed circuit.
The invention of the 9th aspect is in the invention of the either side in first to eighth aspect, it is characterized in that: described control device be configured to this control device to before powering to described electric heater by the temperature sensor of described downstream detect heat before temperature and start after described electric heater is powered, have passed through the stipulated time again time detected by the temperature sensor of described downstream heat after temperature compare, when temperature difference is less than regulation judgment value after heating the front temperature of beginning and heating beginning, cut off the power supply feeding to described electric heater.
According to this structure, when temperature before powering to described electric heater is less with the temperature difference started after powering, air conditioner for vehicles is likely to be in following state, it may be assumed that idle call air is not fed to electric heater due to the fault of aerator or mixed gas air-valve etc..Because cutting off the power supply feeding to electric heater in this case, it is possible to suppression temperature anomaly ground rises.
-effect of invention-
According to the invention of first aspect, because of according to the aperture of mixed gas air-valve and finally determine to feed to the delivery of electric heater by the temperature of the idle call air after electric heater, feed to the power supply of electric heater i.e. can change heating capacity so not cutting off.Thus, even if not using regenerative apparatus also to be able to realize not reducing the comfortableness to passenger, it is thus possible to by air-conditioning equipment miniaturization.
According to the invention of second aspect, when by the temperature of the idle call air after electric heater higher time, it is possible to make the electricity feeding to electric heater less, it is thus possible to suppression various piece overheated.On the other hand, when by the temperature of the idle call air after electric heater the highest time, it is possible to obtain enough heating performances, it is thus possible to guarantee the comfortableness to passenger.
According to the invention of the third aspect, because cut off the power supply feeding to electric heater when the temperature by the idle call air after electric heater is more than the second set point of temperature, it is possible to suppression various piece is overheated.
According to the invention of fourth aspect, when having become higher value by the temperature of the idle call air before electric heater, it is possible to make the electricity feeding to electric heater less.Thereby, it is possible to guarantee the comfortableness to passenger, and power consumption can be reduced.
According to the invention of the 5th aspect, because making upstream side temperature sensor with heat exchanger for cooling temperature sensor, it is possible to the increase of suppression component quantity, it is possible to seek to realize cost degradation.
According to the invention of the 6th aspect, because making upstream side temperature sensor with room air temperature sensor and outside air temperature sensor, it is possible to the increase of suppression component quantity, it is possible to seek to realize cost degradation.
According to the invention of the 7th aspect, power in the way of making the current value of electric heater become the state lower than setting, make heating capacity increase.Therefore, it is possible to be easily constructed circuit, and it is able to ensure that the comfortableness to passenger.
According to the invention of eighth aspect, when making the delivery feeding to electric heater increase, it is possible to accomplish: often the most periodically increase delivery through the stipulated time.Thereby, it is possible to make the dash current value of electric heater relatively low, it is thus possible to be easily constructed circuit.
According to the invention of the 9th aspect, when the temperature before powering to electric heater is less with the temperature difference started after powering, cut off the power supply feeding to electric heater.Therefore, it is possible to the temperature anomaly ground of suppression electric heater rises.
Accompanying drawing explanation
Fig. 1 is the figure of the schematic configuration showing the air conditioner for vehicles involved by embodiments of the present invention.
Fig. 2 is the block diagram of vehicle console device.
Fig. 3 is the axonometric chart of electric heater.
Fig. 4 is the flow chart representing and controlling the control content that device is carried out.
Fig. 5 is the figure of the relation of the heating capacity showing the aperture of mixed gas air-valve and electric heater.
-symbol description-
1-air conditioner for vehicles；4-controls device；20-housing；23-electric heater；23a-current value detection sensor；25-mixes gas air-valve；40-surface temperature detection sensor (heat exchanger for cooling temperature sensor, upstream side temperature sensor)；The temperature sensor of 41-downstream；60-room air temperature sensor (upstream side temperature sensor)；61-outside air temperature sensor (upstream side temperature sensor)；R1-cooling channel；R2-heating paths；R3-bypass path.
Detailed description of the invention
Hereinafter, referring to the drawings embodiments of the present invention are described in detail.Should illustrate, be substantially example below to preferred embodiment description, be not intended to the scope of the present invention, the application of the present invention or its purposes is any limitation as.
Fig. 1 is the figure of the schematic configuration showing the air conditioner for vehicles 1 involved by embodiments of the present invention.This air conditioner for vehicles 1 is arranged in the vehicles such as such as automobile, and is configured to: can introduce air or the air of car outdoor of car chamber interior, and the air-conditioner wind of the temperature desired by generation, then this air-conditioner wind feeds to the various piece of car room.
Should illustrate, the vehicle installing this air-conditioning device 1 is to include electric drive motor (not shown) and the electric automobile of battery B.
Air conditioner for vehicles 1, including outdoor unit 2, indoor units 3 and control device 4, outdoor unit 2 and indoor units 3 are controlled by this control device 4.Outdoor unit 2 is arranged in the motor room such as installing electric drive motor, and include condenser 10, motor compressor 11 and pressure fan 12, this condenser 10 and this motor compressor 11 are the elements of refrigerating circulatory device, and this pressure fan 12 carries air to condenser 10.The break-make of the power supply of motor compressor 11 is switched by controlling device 4, and the rotating speed of this motor compressor 11 is also changed by control device 4.Motor compressor 11 is powered by battery B.
Indoor units 3 includes: housing 20, be accommodated in the aerator 21 within housing 20, heat exchanger for cooling 22, electric heater 23, inner air and outer air switching air-valve 24, mixed gas air-valve 25 and blow-off direction switching air-valve 26.
It has been internally formed air flue at housing 20.Air-flow direction upstream side within housing 20 is provided with inner air and outer air switching part 30.It is formed with indoor air sucting inlet 31 and outdoor air suction inlet 32 at inner air and outer air switching part 30, this indoor air sucting inlet 31 is used for introducing the air of car chamber interior the inside of housing 20, and this outdoor air suction inlet 32 is used for introducing the air of car outdoor the inside of housing 20.
Described inner air and outer air switching air-valve 24 is arranged on the inside of inner air and outer air switching part 30, and is configured to: makes the suction inlet in indoor air sucting inlet 31 and outdoor air suction inlet 32 open, and closes another suction inlet.
The ratio inner air and outer air switching air-valve 24 that aerator 21 is arranged within housing 20 also proximates on the position of side, downstream.Blower motor 28 blower 21 rotates.
Cooling channel R1, heating paths R2, bypass path R3 and mixed headroom R4 have been internally formed it at housing 20, this cooling channel R1 is used for cooling down the idle call air having been introduced within this housing 20, this heating paths R2 is used for heating idle call air in this heating paths R2, idle call air bypass this heating paths R2 flows through this bypass path R3, and this mixed headroom R4 makes have passed through the air of heating paths R2 and have passed through the air mixing of bypass path R3.
Specifically, cooling channel R1 is formed at the side, downstream of aerator 21.The side, downstream of cooling channel R1 branches into two, and one therein is connected with the upstream side of heating paths R2, and another is connected with the upstream side of bypass path R3.The side, downstream of heating paths R2 and the side, downstream of bypass path R3 are connected with mixed headroom R4.The side, downstream of mixed headroom R4 branches into three, and these three are connected with a blow-off outlet in defrosting blow-off port 33, air-out blow-off outlet 34 and heating blow-off outlet 35 respectively.
Described heat exchanger for cooling 22 is arranged in cooling channel R1.The all idle call air having been introduced in housing 20 all pass through heat exchanger for cooling 22.Heat exchanger for cooling 22 is the vaporizer of the element as refrigerating circulatory device.Being provided with expansion valve device 37 on this heat exchanger for cooling 22, the cold-producing medium discharged from condenser 10 is reduced pressure by expansion valve device 37, then flows in heat exchanger for cooling 22.The cold-producing medium having flowed through heat exchanger for cooling 22 circulation is inhaled in motor compressor 11.
Being provided with surface temperature detection sensor (heat exchanger for cooling temperature sensor) 40 on heat exchanger for cooling 22, this surface temperature detection sensor 40 is used for detecting the surface temperature of this heat exchanger for cooling 22.As also shown in Figure 2, surface temperature detection sensor 40 is connected with controlling device 4, to controlling the temperature that device 4 output detections goes out.
As it is shown on figure 3, electric heater 23 includes the first to the 6th heat-generating units 51～56, multiple fin 57 and electrode tip holder 58.First to the 6th heat-generating units 51～56 is arranged in order along the width of electric heater 23, is provided with fin 57 between these first to the 6th heat-generating units 51～56, and idle call air is by between these fins 57.
First to the 6th heat-generating units 51～56 is the parts being mutually identical.PTC(positivetemperaturecoefficient: the positive temperature coefficient of the heat generation in flow by electric current it is respectively arranged with in the inside of the first to the 6th heat-generating units 51～56) element.
First to the 6th heat-generating units 51～56 is divided into three groups.It is to say, the first and second heat-generating units 51,52 are connected with first anode lateral electrode 58a and cathode side electrode 58d.Third and fourth heat-generating units 53,54 is connected with second plate lateral electrode 58b and cathode side electrode 58d.5th and the 6th heat-generating units 55,56 is connected with third anode lateral electrode 58c and cathode side electrode 58d.
First is connected to third anode lateral electrode 58a～58c and cathode side electrode 58d with controlling device 4, independently powers to third anode lateral electrode 58a～58c to first.By powering to first anode lateral electrode 58a, then the first and second heat-generating units 51,52 heating；By powering to first anode lateral electrode 58a and second plate lateral electrode 58b, then the first to the 4th heat-generating units 51～54 heating；By powering to third anode lateral electrode 58a～58c to first, then the first to the 6th heat-generating units 51～56 heating.As it has been described above, the heating capacity of electric heater 23 is adjustable as three phases.
As it is shown in figure 1, be provided with current value detection sensor 23a on electric heater 23, the detection sensor 23a detection of this current value inputs to the current value of this electric heater 23.This current value detection sensor 23a is connected with controlling device 4, and to controlling the current value that device 4 output detections goes out.
The side, air-flow direction downstream of the electric heater 23 within housing 20 is provided with downstream temperature sensor 41, this downstream temperature sensor 41 detect by electric heater 23 after the temperature of idle call air.This downstream temperature sensor 41 is connected with controlling device 4, to controlling the temperature that device 4 output detections goes out.
Mixed gas air-valve 25 is configured to: this mixed gas air-valve 25 opens, cuts out a part i.e. upstream-end opening of heating paths R2 and bypass path R3.Mixed gas air-valve 25 is driven by an element of air-conditioning device 1 i.e. actuator 42.Actuator 42 is connected with controlling device 4, according to by controlling the signal work that device 4 exports.
As in FIG with as shown in solid, if till allowing mixed gas air-valve 25 move to make the position that heating paths R2 becomes full closing state, all idle call air having passed through cooling channel R1 the most all flow through bypass path R3, then flow in mixed headroom R4.On the other hand, as as use shown in double dot dash line in FIG, if till allowing mixed gas air-valve 25 move to make the position that bypass path R3 becomes full closing state, all idle call air having passed through cooling channel R1 the most all flow through heating paths R2, then flow in mixed headroom R4.Action by this mixed gas air-valve 25 regulates heating paths R2 and the aperture of bypass path R3, changes the cold blast rate and hot blast rate flowed in mixed headroom R4.
In the present embodiment, the aperture of mixed gas air-valve 25 is represented by the aperture of heating paths R2.Such as, the aperture of mixed gas air-valve 25 is that " 100% " represents that the aperture of heating paths R2 is 100% and the state that aperture is 0% of bypass path R3；The aperture of mixed gas air-valve 25 is that " 0% " represents that the aperture of heating paths R2 is 0% and the state that aperture is 100% of bypass path R3.The aperture of mixed gas air-valve 25 can be set as arbitrary value in the range of 0%～100%.
In mixed headroom R4, cold wind and hot blast mixing, thus generate regulation air.
The regulation air generated in mixed headroom R4 feeds to the various piece of car room according to the open and-shut mode of blow-off direction switching air-valve 26.Blowout pattern now has such as defrosting mode, air-out mode and heating pattern etc..
Room air temperature sensor 60 and outside air temperature sensor 61 it is provided with in described vehicle, it is indoor that this room air temperature sensor 60 is arranged on car, and detect the air themperature of car chamber interior, this outside air temperature sensor 61 is arranged on car outdoor, and detects the air themperature of car outdoor.Room air temperature sensor 60 and outside air temperature sensor 61 are the elements of air conditioner for vehicles 1.Room air temperature sensor 60 and outside air temperature sensor 61 are connected with controlling device 4, to controlling the temperature that device 4 output detections goes out.
Control device 4 refrigerating circulatory device is controlled, and also aerator 21, electric heater 23 and actuator 42 are controlled.In the control to refrigerating circulatory device, essentially according to air conditioner load (cooling load), switching and the rotating speed of the on/off of motor compressor 11 are controlled.Now, from the output signal of surface temperature detection sensor 40, obtain the surface temperature information of heat exchanger for cooling 22, according to the surface temperature of this heat exchanger for cooling 22, motor compressor 11 is controlled.
When air conditioner for vehicles 1 is required out bigger, controls device 4 and make the voltage applied to blower motor 28 increase, make the rotating speed of aerator 21 increase.Controlling device 4, whether the air themperature etc. of the design temperature, the air themperature of car chamber interior or the car outdoor that set according to such as passenger in accordance with known methods is being required out to judge more greatly for air conditioner for vehicles 1.
The computings such as the air themperature of design temperature, the air themperature of car chamber interior or car outdoor that control device 4 sets according to passenger mix the target aperture of gas air-valve 25.Such as, in the case of higher in outside air temperatures such as summers and passenger setting design temperature is relatively low, makes the aperture of mixed gas air-valve 25 in the range of such as 0%～20%, freeze rapidly；In the case of in the winter time etc. outside air temperature is relatively low and passenger sets design temperature is higher, makes the aperture of mixed gas air-valve 25 in the range of such as 80%～100%, heat rapidly；In the case of not only being made without heating rapidly but also be made without to freeze rapidly, make the aperture of mixed gas air-valve 25 in the range of 20%～80%, the refrigeration that thus carries out out less or heating of opening less.
Control device 4 and substantially obtain the target opening information of the above-mentioned mixed gas air-valve 25 calculated, and when the target aperture of this mixed gas air-valve 25 is to heat side (more than 50% and less than 100%), make to feed to the delivery of electric heater 23 more than the delivery feeding to this electric heater 23 when this target aperture is to freeze side (more than 0% and less than 50%).Control device 4, finally determine to feed to the delivery of electric heater 23 according to the target aperture of mixed gas air-valve 25 and the temperature that detected by downstream temperature sensor 41.
With reference to the flow chart shown in the diagram, the key step controlling the delivery that device 4 decision feeds to electric heater 23 is illustrated.Should illustrate, this controls when air-conditioning device 1 just starts action, and repeats this control in the action of air-conditioning device 1.
In step S1 after " beginning " of flow chart, read target aperture (MIX) information of the mixed gas air-valve 25 obtained as mentioned above, and read temperature (TE) information detected by surface temperature detection sensor 40, the i.e. surface temperature of heat exchanger for cooling 22.This TE be by electric heater 23 before the temperature of idle call air.
In carrying out step S2 that step S1 is followed by carried out, determine the target heating capacity (HA) of electric heater 23 according to the target aperture (MIX) of mixed gas air-valve 25.
Specifically, as it is shown in figure 5, when the target aperture (MIX) of mixed gas air-valve 25 is more than 0% and less than 25%, target setting heating capacity (HA) is 0, does not powers (power supply cutting off electric heater 23) to electric heater 23.When the target aperture (MIX) of mixed gas air-valve 25 is more than 25% and less than 45%, target setting heating capacity (HA) is minimum heating capacity, only to the first and second heat-generating units 51,52 power supplies of electric heater 23.Target aperture (MIX) now, uses when the electric heater 23 being in power off state becomes minimum heating capacity state.Should illustrate, the longitudinal axis in Fig. 5 represents the temperature of the idle call air of the side, downstream of electric heater 23, and this temperature is corresponding to the output valve of downstream temperature sensor 41.
When the target aperture (MIX) of mixed gas air-valve 25 is more than 45% and less than 85%, target setting heating capacity (HA) is medium heating capacity, only to the first and second heat-generating units the 51,52 and the 5th and the 6th heat-generating units 55,56 power supplies of electric heater 23.Target aperture (MIX) now, uses when electric heater 23 is switched to medium heating capacity state from minimum heating capacity state.
When the target aperture (MIX) of mixed gas air-valve 25 is more than 85% and when less than 100%, and target setting heating capacity (HA) is maximum heating capacity, to the first to the 6th heat-generating units 51～56 power supply of electric heater 23.Target aperture (MIX) now, uses when electric heater 23 is switched to maximum heating capacity state from medium heating capacity state.
On the other hand, in the case of the power supply cutting off this electric heater 23 when electric heater 23 is in minimum heating capacity state, after the aperture of mixed gas air-valve 25 becomes 20% value below, just cut off this power supply.In the case of this electric heater 23 being switched to minimum heating capacity state when electric heater 23 is in medium heating capacity state, after the aperture of mixed gas air-valve 25 becomes 45% value below, just this electric heater 23 is switched to minimum heating capacity state.Say again, in the case of this electric heater 23 being switched to medium heating capacity state when electric heater 23 is in maximum heating capacity state, after the aperture of mixed gas air-valve 25 becomes 85% value below, just this electric heater 23 is switched to medium heating capacity state.
In step s3, it is judged that whether the target heating capacity (HA) determined the most in step s 2 is 0.When judging "Yes" in step s3, target heating capacity (HA) is to shift to " return " when of 0.On the other hand, when judging "No" in step s3, target heating capacity (HA) is to shift to step S4 when of (minimum heating capacity, medium heating capacity or maximum heating capacity) beyond 0.
In step s 4, the output valve (T1) of downstream temperature sensor 41 is read.The temperature of the idle call air now read is the temperature before electric heater 23 is powered.
In step s 5, power to electric heater 23, make heating capacity become the target heating capacity (HA) determined the most in step s 2.It is to say, when target heating capacity (HA) is minimum heating capacity, only to the first and second heat-generating units 51,52 power supplies；When target heating capacity (HA) is medium heating capacity, only to the first and second heat-generating units the 51,52 and the 5th and the 6th heat-generating units 55,56 power supplies；When target heating capacity (HA) is maximum heating capacity, to the first to the 6th heat-generating units 51～56 power supply.
After powering to electric heater 23, shift to step S6.In step s 6, the output valve (T2) of downstream temperature sensor 41 when have passed through the stipulated time again after electric heater 23 is powered is read.Stipulated time is such as 1 minute, but this stipulated time is not limited to 1 minute, as long as there is the temperature that can detect the electric heater 23 having started to power supply to rise the so long time.
In the step s 7, it is judged that the temperature (T2) after power supply deduct power supply before temperature (T1) and whether the value that obtains is the value less than regulation judgment value.Regulation judgment value is set as such as 5 DEG C～about 10 DEG C.When judging "Yes" the most in the step s 7 when, it is meant that the temperature difference of T1 and T2 is less.That is, it means that although the power supply feeding to electric heater 23 has started to, but the temperature of side, downstream does not almost rise.Do not flow in heating paths R2 in such a case it is possible to be speculated as idle call air.Its reason is for instance that aerator 21 or blower motor 28 are out of order, or heating paths R2 is due to mixed gas air-valve 25 or the fault of actuator 42 and closedown etc..In such a case it is possible to think that electric heater 23 is likely to become superheat state and makes housing 20 melt, thus shift to step S8, cut off the power supply feeding to electric heater 23.Then, " return " is shifted to.
When judging "No" in the step s 7, the when that the temperature difference of T1 and T2 being bigger, thus it is speculated that for the most normally conveying idle call air.In this case, next step i.e. step S9 is shifted to.In step s 9, the output valve (T3) of downstream temperature sensor 41, the i.e. temperature of the idle call air of the side, downstream of electric heater 23 are again read off.
Afterwards, step S10 is shifted to, it is judged that the output valve (T3) of downstream temperature sensor 41 is whether more than 100 DEG C (second settings).When judging "Yes" in step slo, the when that T3 being more than 100 DEG C, it is believed that the temperature of electric heater 23 is too high so that housing 20 likely melts, thus shifts to step S8, cut off the power supply feeding to electric heater 23.Then, " return " is shifted to.
When judging "No" in step slo, the when that T3 being lower than 100 DEG C, because housing 20 will not melt, so continuing to power to electric heater 23, and shift to step S11.
A judgement temperature only example in described step S10, this judgement temperature is set as the minimum temperature that housing 20 likely melts or damages.Such as, this temperature can also be 90 DEG C, it is also possible to is 110 DEG C.
In step s 11, it is judged that whether temperature TE detected by surface temperature detection sensor 40 is more than 25 DEG C (the 3rd set points of temperature).When judging "Yes" in step s 11, the when that TE being more than 25 DEG C, the temperature of the idle call air before can being speculated as by electric heater 23 is sufficiently high, can also even if heating capacity is relatively low, thus now shift to step S12, power to electric heater 23, make heating capacity lower than target heating capacity (HA).It is to say, such as when target heating capacity (HA) is maximum heating capacity, be powered the medium heating capacity making heating capacity become the stage lower than this maximum heating capacity.
When judging "No" in step s 11, the when that TE being lower than 25 DEG C, need carry out out the biggest to heat.In this case, step S13 is shifted to, it is judged that the output valve (T3) of downstream temperature sensor 41 is whether more than 80 DEG C (first set points of temperature).When judging "Yes" in step s 13, the when that TE being more than 80 DEG C, it is meant that the temperature by the air after electric heater 23 is higher.In this case, shift to step S12, heating capacity is switched to the heating capacity lower than target heating capacity (HA), powers to electric heater 23.
When judging "No" in step s 13, the when that T3 being lower than 80 DEG C, shift to step S14, it is judged that the output valve (T3) of downstream temperature sensor 41 is lower than 70 DEG C.When judging "Yes" in step S14, the when that T3 being lower than 70 DEG C, it is meant that be suitably heated by the air after electric heater 23.In this case, shift to step S15 and power to electric heater 23, make heating capacity become target heating capacity (HA).
When judging "No" in step S14, the when that T3 being more than 70 DEG C, shift to step S16, it is judged that whether this process is to process the first time after air-conditioning device 1 starts action.When judging "Yes" in step s 16, the when that this process being to process for the first time, shift to step S15 and power to electric heater 23, make heating capacity become target heating capacity (HA).
When judging "No" in step s 16 when, shift to step S17 and maintain the target heating capacity (HA) of present electric heater 23, and shift to " return ".
This control device 4 is configured to: in the case of having had the necessity of the heating capacity changing electric heater 23 in described flow process, just change heating capacity counting in time changing last time after more than 20 seconds (stipulated time).In such event, the temperature at each PTC-element of electric heater 23 just starts power supply after rising, it is thus possible to suppression occurs that current value rises to the phenomenon of extremely high value, i.e. dash current can be suppressed to lower value.The described stipulated time is not limited to 20 seconds, as long as the dash current of electric heater 23 can be suppressed to the time of lower value, therefore this stipulated time can also be about 10 seconds, it is also possible to is about 30 seconds.
Control device 4 to be configured to: this control device 4 learns the value of current value detection sensor 23a, power to electric heater 23 in the way of making to be become by the current value detection current value that detects of sensor 23a the state lower than setting, make the heating capacity of electric heater 23 increase.
It is to say, the temperature of PTC-element before Gong electricity is relatively low, if powering to the PTC-element that temperature is relatively low, dash current is possible to increase.When tackling this dash current, the setting to electric fuse etc. is more difficult, and circuit is difficult to constitute.And in the present embodiment, because making temperature be gradually increased, make the current value of electric heater 23 become setting, so dash current will not be produced, it is possible to be easily constructed circuit.Setting now is the value not producing dash current.
As mentioned above, according to the air conditioner for vehicles 1 involved by present embodiment, when mixing gas air-valve 25 as shown in Figure 5 and being in the state making the aperture of heating paths R2 bigger, i.e. mix gas air-valve 25 when being to heat side, the delivery feeding to electric heater 23 compared with when being refrigeration side with this mixed gas air-valve 25 is more, thus heating capacity increases, its result is to be able to ensure that the comfortableness to passenger.
On the other hand, when mixed gas air-valve 25 is in the state making the aperture of heating paths R2 less, i.e. this mixed gas air-valve 25 be to freeze side time, when being to heat side with this mixed gas air-valve 25 compared with to feed to the delivery of electric heater 23 less.
When the temperature (T3) detected by downstream temperature sensor 41 in step S13 in the diagram is more than set point of temperature (80 DEG C) when, it is possible to reduce the delivery feeding to electric heater 23.Thus, do not cut off and feed to the power supply of electric heater 23 and i.e. can change heating capacity.Therefore, even if not using regenerative apparatus as prior art, it is also possible to realizing not reducing the comfortableness to passenger, its result is can be by air-conditioning equipment miniaturization.
In step S13 in the diagram, when the temperature (T3) detected by downstream temperature sensor 41 is more than set point of temperature (80 DEG C) when, the temperature that can be speculated as electric heater 23 is higher.In this case, by making heating capacity become the heating capacity lower than target heating capacity (HA) in step s 12, and power to electric heater 23, then can suppress the overheated of housing 20 grade.
On the other hand, in step s 13, when it has been determined that the temperature (T3) that detected by downstream temperature sensor 41 is lower than set point of temperature (80 DEG C) when, occurs that above-mentioned overheated probability is relatively low, thus preferentially guarantee that heating capacity is powered to electric heater 23.In such event, it can be ensured that the comfortableness to passenger.
In step slo, when judging that the temperature (T3) detected by downstream temperature sensor 41 is more than set point of temperature (100 DEG C) when, the probability that electric heater 23 is in superheat state is higher.In this case, cut-out feeds to the power supply of electric heater 23 in step s 8.In such event, it is possible to suppress the overheated of housing 20 grade.
In step s 11, when by the temperature of the idle call air before electric heater 23 more than set point of temperature (25 DEG C) when, it is meant that the temperature of idle call air has become as higher value.In this case, though heating capacity relatively low can also, thus power to electric heater 23 in step s 12, make heating capacity become the heating capacity lower than target heating capacity (HA).In such event, it is possible to reduce power consumption.
In the present embodiment, use as controlling the surface temperature detection sensor 40 set by refrigerating circulatory device, the temperature (TE) of the idle call air before detecting by electric heater 23.In such event, it is possible to the increase of suppression component quantity, it is possible to seek cost degradation.
For detection, special temperature sensor (upstream side temperature sensor) can also be set by the temperature (TE) of the idle call air before electric heater 23.
It is also possible that, that is: when the air of car chamber interior being introduced in housing 20 with inner air and outer air switching part 30, upstream side temperature sensor is made with room air temperature sensor 60, on the other hand, when being introduced in housing 20 by the air of car outdoor with inner air and outer air switching part 30, make upstream side temperature sensor with outside air temperature sensor 61.In this case, it is not necessary to for detection, special temperature sensor is set by the temperature (TE) of the idle call air before electric heater 23.Therefore, it is possible to seek cost degradation.
In the present embodiment, the current value detection sensor 23a that detection inputs to the current value of electric heater 23 is set, powers in the way of making to be become by the current value detection current value that detects of sensor 23a the state lower than setting and make heating capacity increase.In such event, it is possible to dash current value when making electric heater 23 be in low temperature state is relatively low to guarantee to be easily constructed circuit, and heating capacity can be made to increase, and guarantees the comfortableness to passenger.
In the present embodiment, the electricity feeding to electric heater 23 changes between three phases, and when making delivery increase, just makes delivery increase counting in time changing last time after the stipulated time (20 seconds).By being configured to said structure, it is also possible to dash current value when making electric heater 23 be in low temperature state is relatively low, and its result is to be easily constructed circuit.
In the step s 7, when temperature (T1) before powering to electric heater 23 and the difference of temperature (T2) after starting power supply are less, cut-out feeds to the power supply of electric heater 23.In such event, it is possible to do not flow to the situation of electric heater 23 in view of idle call air due to the fault of such as aerator 21 or mixed gas air-valve 25 etc., it is possible to the temperature anomaly ground of suppression electric heater 23 rises.
Should illustrate, in the above-described embodiment, be configured to the heating capacity of electric heater 23 changes over minimum heating capacity, medium heating capacity and maximum heating capacity these three stage, but be not limited to this.The heating capacity of electric heater 23 can also be divided into two stages, it is also possible to is divided into more than four-stage.
The present invention, it is also possible to be applied to such as include the air-conditioning device of the hybrid vehicle of electromotor and electric drive motor.
-industrial applicability-
In sum, air conditioner for vehicles involved in the present invention can act as the air-conditioning device of such as electric automobile.
Claims (8)
- null1. an air conditioner for vehicles，Including housing、Electric heater、Mixed gas air-valve、Downstream temperature sensor and control device，Heating paths and bypass path have been internally formed it at this housing，In this heating paths, idle call air is heated，Idle call air this heating paths roundabout and flow through this bypass path，This electric heater is arranged in this heating paths of described housing，And the idle call air flowing through this heating paths is heated，This mixed gas air-valve is arranged on the inside of described housing，By opening、Close at least one path in described heating paths and described bypass path thus change and flow through the air capacity of described heating paths and flow through the air capacity of described bypass path，The temperature of the blow out air of blowout in this housing is adjusted，This downstream temperature sensor detection temperature by the idle call air after described electric heater，Described electric heater and described mixed gas air-valve are controlled by this control device，It is characterized in that:Described control device is configured to, this control device obtains the opening information of described mixed gas air-valve, when the aperture of this mixed gas air-valve is to heat side, this control device makes the delivery feeding to this electric heater more than the delivery feeding to this electric heater when the aperture of this mixed gas air-valve is to freeze sideDescribed control device is configured to, this control device finally determines to feed to the delivery of described electric heater according to the aperture of described mixed gas air-valve and the temperature that detected by the temperature sensor of described downstream, this control device temperature to being detected by the temperature sensor of described downstream and the first set point of temperature compare, when it has been determined that the temperature that detected by the temperature sensor of described downstream is more than the first set point of temperature, power to described electric heater, heating capacity is made to become the low heating capacity of target heating capacity determined than the aperture according to described mixed gas air-valve, on the other hand, when it has been determined that the temperature that detected by the temperature sensor of described downstream is lower than the first set point of temperature, power to described electric heater, heating capacity is made to become the target heating capacity that the aperture according to described mixed gas air-valve determines.
- Air conditioner for vehicles the most according to claim 1, it is characterised in that:Described control device is configured to, this control device temperature to being detected by the temperature sensor of described downstream and second set point of temperature higher than the first set point of temperature compare, when it has been determined that the temperature that detected by the temperature sensor of described downstream is more than the second set point of temperature, cut off the power supply feeding to described electric heater.
- Air conditioner for vehicles the most according to claim 1 and 2, it is characterised in that:Described air conditioner for vehicles includes upstream side temperature sensor, this upstream side temperature sensor detection temperature by the idle call air before described electric heater,Described control device is configured to, the temperature and the 3rd set point of temperature that are detected by described upstream side temperature sensor are compared by this control device, when it has been determined that the temperature that detected by described upstream side temperature sensor is more than the 3rd set point of temperature, powers to described electric heater and make heating capacity become the heating capacity lower than the target heating capacity that the aperture according to described mixed gas air-valve determines.
- Air conditioner for vehicles the most according to claim 3, it is characterised in that:Described air conditioner for vehicles includes heat exchanger for cooling, and this heat exchanger for cooling is arranged on the ratio heating paths of described enclosure interior and also proximates on the position of air-flow direction upstream side, and idle call air is cooled down by this heat exchanger for cooling,Being provided with heat exchanger for cooling temperature sensor on described heat exchanger for cooling, this heat exchanger for cooling temperature sensor detects the surface temperature of this heat exchanger for cooling,Described heat exchanger for cooling temperature sensor is described upstream side temperature sensor.
- Air conditioner for vehicles the most according to claim 3, it is characterised in that:Described air conditioner for vehicles includes:Room air temperature sensor, the air themperature of its detection car chamber interior；Outside air temperature sensor, the air themperature of its detection car outdoor；AndInner air and outer air switching part, it selects the air in the air of the air of car chamber interior and car outdoor the air that will select to introduce in described housing,When the air of car chamber interior being introduced in described housing with described inner air and outer air switching part, described upstream side temperature sensor is made with described room air temperature sensor, on the other hand, when being introduced in described housing by the air of car outdoor with described inner air and outer air switching part, make described upstream side temperature sensor with described outside air temperature sensor.
- Air conditioner for vehicles the most according to claim 1 and 2, it is characterised in that:Described air conditioner for vehicles includes that current value detects sensor, and the detection sensor detection of this current value inputs to the current value of described electric heater,Described control device is configured to: this control device is powered in the way of making to be become the state lower than setting by the described current value detection current value that detects of sensor, makes the heating capacity of described electric heater increase.
- Air conditioner for vehicles the most according to claim 1 and 2, it is characterised in that:Described control device is configured to, and this control device periodically changes the electricity feeding to described electric heater, when making delivery increase, first making delivery increase, then making when have passed through the stipulated time delivery increase again.
- Air conditioner for vehicles the most according to claim 1 and 2, it is characterised in that:Described control device is configured to, this control device to before powering to described electric heater by the temperature sensor of described downstream detect heat before temperature and start after described electric heater is powered, have passed through the stipulated time again time detected by the temperature sensor of described downstream heat after temperature compare, when temperature difference is less than regulation judgment value after heating the front temperature of beginning and heating beginning, cut off the power supply feeding to described electric heater.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-062146 | 2012-03-19 | ||
| JP2012062146A JP5960458B2 (en) | 2012-03-19 | 2012-03-19 | Air conditioner for vehicles |
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| Publication Number | Publication Date |
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| CN103317995A CN103317995A (en) | 2013-09-25 |
| CN103317995B true CN103317995B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310081829.4A Expired - Fee Related CN103317995B (en) | 2012-03-19 | 2013-03-14 | Air conditioner for vehicles |
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| JP (1) | JP5960458B2 (en) |
| CN (1) | CN103317995B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6252323B2 (en) * | 2014-04-08 | 2017-12-27 | 株式会社デンソー | Heating control mechanism |
| CN105966193B (en) * | 2016-05-27 | 2018-06-12 | 北京新能源汽车股份有限公司 | Electric vehicle and its HAVC air-conditioning systems |
| US20220026163A1 (en) * | 2019-01-29 | 2022-01-27 | National University Corporation Tokai National Higher Education And Research System | Heat storage device |
| CN111678209A (en) * | 2020-06-23 | 2020-09-18 | 珠海格力电器股份有限公司 | Air duct machine, air conditioning unit and control method of air conditioning unit |
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| JPH0618011U (en) * | 1992-08-11 | 1994-03-08 | カルソニック株式会社 | PTC heater controller for automobile air conditioner |
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| CN1202432A (en) * | 1997-04-21 | 1998-12-23 | 株式会社杰克赛尔 | Air mixer controller for vehicle air conditioner system |
| JP2000006649A (en) * | 1998-06-19 | 2000-01-11 | Denso Corp | Air conditioner for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2571235Y2 (en) * | 1992-05-19 | 1998-05-18 | 三菱自動車工業株式会社 | Electric vehicle air conditioner |
| JP2003159930A (en) * | 2001-11-22 | 2003-06-03 | Denso Corp | Air conditioner for vehicle |
| US8899311B2 (en) * | 2009-11-16 | 2014-12-02 | Denso Corporation | Vehicular air conditioner |
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2012
- 2012-03-19 JP JP2012062146A patent/JP5960458B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0618011U (en) * | 1992-08-11 | 1994-03-08 | カルソニック株式会社 | PTC heater controller for automobile air conditioner |
| JPH0986148A (en) * | 1995-09-22 | 1997-03-31 | Zexel Corp | Air conditioner for electric vehicle |
| CN1202432A (en) * | 1997-04-21 | 1998-12-23 | 株式会社杰克赛尔 | Air mixer controller for vehicle air conditioner system |
| JP2000006649A (en) * | 1998-06-19 | 2000-01-11 | Denso Corp | Air conditioner for vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103317995A (en) | 2013-09-25 |
| JP5960458B2 (en) | 2016-08-02 |
| JP2013193549A (en) | 2013-09-30 |
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