KR101492154B1 - Air conditioner for vehicle - Google Patents

Abstract

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle. More particularly, the present invention relates to an air conditioner for a vehicle, (Front seat) auxiliary heating and seat heating can be simultaneously performed through a single PTC heater by independently controlling the two regions of the PTC heaters located on the upper and lower passages by installing the switching doors, So that it is possible to reduce the number of components and the number of assembling steps, thereby reducing the cost.

The present invention is characterized in that an air inlet 111 is formed at an inlet side and an air ventilation case 110 having an air outlet 112a, a face vent 112b, floor vents 112c and 112d and a seat vent 112e, And an evaporator 101 and a heater core 102 installed inside the air conditioning case 110. In the air conditioning apparatus of the present invention, And a lower passageway 116b directed toward the seat vent 112e is defined by a partition wall 115. A single PTC is provided on the upper passageway 116a and the lower passageway 116b, And a seat side switching door 130 for opening and closing the lower passage 116b is provided at an inlet side of the lower passage 116b.

Air conditioner, PTC heater, seat, seat vent, seat side switching door

Description

[0001] Air conditioner for vehicle [0002]

The present invention relates to an air conditioner for a vehicle, and more particularly, to an air conditioner for a vehicle. More particularly, the present invention relates to an air conditioner for a vehicle, (Front seat) auxiliary heating and seat heating can be simultaneously performed through a single PTC heater by independently controlling the two regions of the PTC heaters located on the upper and lower passages by installing the switching doors, So that it is possible to reduce the number of components and the number of assembling steps, thereby reducing the cost.

Generally, the air conditioner for a vehicle is an automobile interior which is installed for the purpose of securing the front and rear view of the driver by removing the casting which is to be cooled or heated in the summer or winter season, or in case of rain or windshield during rainy or winter season Such an air conditioner is usually equipped with a heating device and a cooling device at the same time so that the indoor air or the outside air is selectively introduced through the air blowing unit and then the air is heated or cooled to blow air into the inside of the vehicle, .

Such an air conditioner has a three-piece type in which the three units are independently provided, an evaporator unit and a heater core unit are built in the air conditioner case, and an air blowing unit is installed in the air conditioner case according to the independent structure of the blowing unit, the evaporator unit, A semi-center type provided as a separate unit, and a center mounting type in which all of the three units are incorporated in the air conditioner case.

The above-described air conditioners are usually front air conditioners for front (front seat) air conditioning and rear air conditioners for rear seat air conditioning.

In addition, the air conditioning apparatus includes a vehicular seat air-conditioning apparatus for heating the seat of the vehicle by bypassing the heat-exchanged air from the front air-conditioning apparatus to the seat side of the vehicle in cooperation with the front air-conditioning apparatus, thereby comforting the passengers' back and hips.

1, an air conditioning case 10 in which an air inlet 11 is formed at an inlet side and a plurality of air outlet ports 12 are formed at an outlet side, An evaporator 2 and a heater core 3 provided inside the air conditioning case 10 and a cool air passage 2 provided between the evaporator 2 and the heater core 3 for bypassing the heater core 3, A tempo door 20 for regulating the temperature by regulating the opening degree of the hot air passage P2 passing through the heater core 1 and the heater core 3 and a temperature sensor 20 installed at the air outlet 12, And a mode door 30 for controlling the opening degree of the door.

In addition, a PTC heater 5 is installed on the downstream side of the heater core 3 so that heating can be performed using the electrical energy of the battery as an auxiliary heating device for heating at the initial startup.

On the other hand, a blower (not shown) for blowing the inside / outside air to the air conditioning casing 10 side is provided on the side of the air inlet 11 of the air conditioning case 10.

Therefore, the air blown by the blower is exchanged with the refrigerant flowing in the evaporator 2 through the evaporator 2 to be changed into a cool air, and then, by adjusting the opening of the tempo door 20, The coolant flows to the mixing chamber MC while bypassing the heater core 3 and flows into the mixing chamber MC and some of the cool air passes through the heater core 3 and the PTC heater 5 and is heat exchanged to be changed into a warm air and flows into the mixing chamber MC. Thereafter, the cold air and the warm air flowing into the mixing chamber MC are mixed with each other and then mixed by the mode door 30 according to a predetermined air conditioning mode (vent mode, bi-level mode, floor mode, mix mode, And is discharged to the passenger compartment through the open air outlet 12, thereby cooling and heating the passenger compartment.

At this time, the PTC heater 5 is activated when the heating performance is insufficient as in the initial stage of starting, thereby improving the heating performance.

The seat air-conditioning apparatus is configured to connect the front air-conditioning apparatus and the vehicle seat by a connecting duct, as disclosed in Japanese Patent Application Laid-Open No. 1999-263116, wherein a blower for forcibly blowing air to the seat side, Is installed.

Therefore, the air supplied through the connecting duct in the front air conditioning apparatus during operation of the blower is heated while passing through the electric heater, and discharged to the passenger through the ventilation path formed in the seat, thereby improving the comfort of the passenger due to the seat heating .

However, since the PTC heater 5 installed in the front air conditioning apparatus 1 is designed to serve as auxiliary heating only when the heating performance of the front air conditioning apparatus 1 is insufficient, in the case of the seat air conditioner, A heater, a blower, and the like must be configured. This increases the number of parts and the number of assembling operations, which increases the cost.

In order to solve the above-described problems, an object of the present invention is to provide a heat exchanger which is characterized in that a downstream side of the heater core is divided into upper and lower passages, and a single PTC heater is disposed on the upper and lower passages, (Front seat) auxiliary heating and seat heating can be performed simultaneously through a single PTC heater by separately controlling the two regions of the PTC heaters located on the upper and lower passages, So that it is possible to reduce the number of components and assembling air, thereby reducing the cost.

According to an aspect of the present invention, there is provided an air conditioner comprising: an air conditioning case having an air inlet formed at an inlet side thereof and a defrost vent, a face vent, a floor vent and a seat vent formed at an outlet side; Wherein an upper passageway toward the cold / warm air mixing chamber and a lower passageway directed toward the seat vent are defined by a partition wall, wherein the upper passageway and the lower vent passageway are separated from each other by a single And a seat side switching door for opening and closing the lower passage is provided at the inlet side of the lower passage.

The present invention is characterized in that a downstream side of the heater core is divided into upper and lower passages, and a single PTC heater is disposed on the upper and lower passages, and a seat side switching door is provided in the lower passageway, (Front seat) auxiliary heating and seat heating can be performed at the same time through a single PTC heater by independently controlling the two regions of the PTC heaters located in the front side of the vehicle, And the number of assembling operations is reduced, thereby reducing the cost.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is a sectional view showing a case where the seat side switching door opens the lower passage in the vehicle air conditioner according to the first embodiment of the present invention. Fig. 3 is a side view of the vehicle side air conditioning apparatus according to the first embodiment of the present invention. Fig. 4 is a view showing the PTC heater of Fig. 2; Fig.

As shown in the figure, the air conditioning system 100 according to the present invention includes an air conditioning case 110 having an air inlet 111 formed at an inlet side thereof, a plurality of air discharge holes formed at an outlet side thereof, And an evaporator 101 and a heater core 102 installed on the air passage in the air conditioning case 110. [

The air inlet 111 of the air conditioner case 110 is selectively introduced with an indoor air or outdoor air through an indoor air inlet (not shown) opened by an indoor / outdoor switching door (not shown) and an outdoor air inlet A blower (not shown) for blowing air is provided.

A plurality of air outlets formed on the outlet side of the air conditioning case 110 include a defrost vent 112a for discharging air to the windshield of the vehicle and a face vent for discharging air toward the face of the occupant of the front seat And floor vents 112c and 112d for discharging air toward the foot of the passenger.

The floor vents 112c and 112d are divided into a front seat floor vent 112c for discharging air toward the foot of the occupant of the front seat and a floor vent 112d for the rear seat for discharging air toward the foot of the rear seat occupant .

A guide wall 113 is formed between the rear air passage P2 of the heater core 102 and the floor vents 112c and 112d and is partitioned from each other.

A cool air passage P1 for bypassing the heater core 102 and a warm air passage P2 for passing through the heater core 102 are disposed between the evaporator 101 and the heater core 102 A plurality of mode doors 121 are provided on the sides of the defrost vent 112a, the face vent 112b and the floor vents 112c and 112d to adjust the opening of each vent, Respectively.

Here, the cold air flowing in the cold air passage P1 and the hot air flowing in the hot air passage P2 are mixed in the mixing chamber MC located on the upper side of the heater core 102, and then discharged into the respective vents .

The tempo door 120 and the mode doors 121 are connected to a cam (not shown) or a lever (not shown) driven by an actuator (not shown) installed on the outer surface of the air conditioner case 110, And controls the openings of the cold and warm air passages P1 and P2 and the vents 112a to 112d.

The air outlet port also includes a seat vent 112e for supplying air to the vehicle seat 105 side.

The seat vent 112e is located on the lower side of the floor vents 112c and 112d and the seat vent 112e and the vehicle seat 105 are connected to communicate through the connecting duct 106. [

Here, the seat vent 112e and the floor vents 112c and 112d are partitioned by a partition wall 114. [

On the other hand, a ventilation path 105a is formed in the vehicle seat 105, and air supplied through the seat vent 112e and the connecting duct 106 is discharged to the passenger side to perform seat heating.

The heater core 102 is divided into an upper passageway 116a toward the cold and warm air mixing chamber MC and a lower passageway 116b toward the seat vent 112e. The passage 116a and the lower passage 116b are defined by a partition wall 115 formed between the heater core 102 and the guide wall 113. [

A single PTC heater 140 is installed on the downstream side of the heater core 102.

The PTC heater 140 includes a plurality of PTC devices 145 and a plurality of radiating fins 146 so that heat is exchanged between heat generated by the PTC devices 145 and air passing through the radiating fins 146. [ So as to perform a heating function.

The PTC heater 140 is controlled by a known real-time control method or a pulse width modulation (PWM) control method.

The single PTC heater 140 is installed on the downstream side of the heater core 102 on the partitioned upper passage 116a and the lower passage 116b.

That is, when the single PTC heater 140 is divided into the primary region 141 and the secondary region 142, the primary region 141 of the PTC heater 140 is divided into the upper passage 116a, And the secondary region 142 is disposed on the lower passage 116b.

At this time, the secondary region 142 of the PTC heater 140 located on the primary region 141 and the lower passage 116b of the PTC heater 140 on the upper passage 116a is independently controlled.

That is, the PTC element 145 provided in the primary region 141 and the PTC element 145 provided in the secondary region 142 are independently controlled through the relay or the PWM control.

Therefore, when the primary region 141 of the single PTC heater 140 is operated, auxiliary heating of the vehicle interior through the deproved vent 112a, the face vent 112b, and the floor vents 112c and 112d And activating the secondary region 142 of the single PTC heater 140 serves to heat the vehicle seat 105 through the seat vent 112e.

The seat side switching door 130 is provided at the entrance side of the lower passage 116b to selectively open and close the lower passage 116b. That is, the seat side switching door 130 opens the lower passage 116b only when the occupant turns on the seat heating switch (not shown).

Meanwhile, the PTC heater 140 controls the position of the TEMP door 120 and the signal of the blower ON state as an INPUT factor.

At this time, the secondary region 142 of the PTC heater 140 is operated only when the seat heating switch is turned on and the blower of the air conditioning apparatus is turned on. Of course, the on / off control may be performed by adding a separate timer function have.

When the static pressure to the vehicle seat 105 is exceeded even when the air conditioner blower is not operated or the blower is operated, the connecting duct 106 connecting the seat vent 112e and the vehicle seat 105, A separate auxiliary blower 107 may be additionally provided.

An inlet duct 119 is further provided at one side of the air conditioning case 110 so that air outside the air conditioning case 110 can be directly introduced into the lower passage 116b. That is, when the air does not flow to the downstream side of the heater core 102, air is directly introduced into the lower passage 116b through the inlet duct 119 to be used for heating the seat. At this time, when the air is introduced through the inflow duct 119, the auxiliary blower 107 installed in the connection duct 106 is used.

Hereinafter, the operation of the automotive air conditioner 100 according to the present invention will be described. Only the case in which the above-described temp door 120 opens both the cold air passage P1 and the warm air passage P1 will be described for convenience.

First, the air blown by the blower (not shown) is converted into cold air through the evaporator 101.

The cold air cooled through the evaporator 101 is branched by the tempo door 120 and a part thereof bypasses the heater core 102 through the cold air passage P1 and part of the cold air passes through the hot air passage P2, The heater core 102 and the PTC heater 140 are changed to hot air.

3, the air passing through the hot air passage P2 passes through the heater core 102 and the PTC heater 140 because the seat side switching door 130 normally closes the lower passage 116b. It is changed into warm air while passing through the primary region 141. [

The cold air and the warm air passing through the cold air passage P1 and the warm air passage P2 are mixed with each other in the mixing chamber MC and then mixed with each of the vents opened by the mode door 121 112a to 112d to maintain the temperature of the passenger compartment at a desired temperature.

When the passenger turns on the seat heating switch, the seat side switching door 130 opens the lower passage 116b as shown in FIG. 2, so that a part of the air passing through the heater core 102 passes through the upper passage Passes through the primary region 141 of the PTC heater 140 located on the lower passage 116a and part of it passes through the secondary region 142 of the PTC heater 140 located on the lower passage 116b.

At this time, the hot air passing through the primary region 141 of the PTC heater 140 flows as described above, and the hot air passing through the secondary region 142 of the PTC heater 140 flows into the seat vent 112e, And the connecting duct 106 to the passenger compartment side through the ventilation path 105a formed in the seat 105 to perform the seat heating.

As described above, according to the present invention, since the first and second regions 141 and 142 of the single PTC heater 140 located on the upper and lower passages 116a and 116b are independently controlled, a single PTC heater 140 The front (front seat) auxiliary heating and seat heating can be performed at the same time, thereby eliminating the need for a separate additional structure for heating the seat, thereby reducing the number of parts and assembling air, thereby reducing the cost.

5 is a cross-sectional view illustrating a vehicle air conditioning system according to a second embodiment of the present invention. As shown in FIG. 5, a seat vent opening / closing door 118 is additionally provided on the seat vent 112e side. At this time, the partition wall 114 partitioning the floor vents 112c and 112d and the seat vent 112e is omitted.

That is, when maximum heating is required on the side of floor vents 112c and 112d without using seat heating, when the seat vent 112e is closed by the seat vent opening / closing door 118, The air that has passed through the secondary region 142 of the PTC heater 140 is supplied to the floor vent 112d side through the floor vent 112d to improve the heating performance of the floor vent 112d.

The air flowing into the floor vent 112d through the mixing chamber MC after passing through the primary region 141 of the PTC heater 140 and the secondary region 142 of the PTC heater 140 The baffle 117 may be formed at a midpoint of the floor vent 112d where the air flowing through the floor vent 112d meets the air flowing toward the floor vent 112d.

However, the present invention is not limited thereto. The same method can be applied to all the air conditioners such as the three-piece type air conditioner, the center mounting air conditioner, and the left and right independent control air conditioner .

1 is a sectional view showing a conventional automotive air conditioner,

Fig. 2 is a sectional view showing a case in which a seat side switching door opens a lower passage in a vehicle air conditioner according to a first embodiment of the present invention; Fig.

Fig. 3 is a sectional view showing a case where the seat side switching door closes the lower passage in the vehicle air conditioning system according to the first embodiment of the present invention, Fig.

Fig. 4 is a view showing the PTC heater of Fig. 2,

5 is a cross-sectional view showing a vehicle air conditioning system according to a second embodiment of the present invention.

Description of the Related Art [0002]

100: air conditioner 101: evaporator

102: heater core 110: air conditioning case

111: air inlet 112a: diffused vent

112b: face vents 112c, 112d: floor vents

112e: seat vent 113: guide wall

114: partition wall 115:

116a: upper passage 116b: lower passage

117: Baffle 118: Seat vent opening / closing door

120: Temp door 121: Mode door

130: Seat side switching door 140: PTC heater

141: primary domain 142: secondary domain

145: PTC element 146:

Claims (7)

An air conditioning case 110 having an air inlet 111 formed at its inlet side and a defrost vent 112a, a face vent 112b, floor vents 112c and 112d and a seat vent 112e formed at the outlet side, In a vehicle air conditioning system including an evaporator (101) and a heater core (102) installed inside a case (110) An upper passageway 116a toward the hot and warm air mixing chamber MC and a lower passageway 116b toward the seat vent 112e are formed on the downstream side of the heater core 102 by partition walls 115 A single PTC heater 140 is disposed on the upper passage 116a and the lower passage 116b, A seat side switching door 130 for opening and closing the lower passage 116b is provided at the inlet side of the lower passage 116b, The PTC heater 140 is controlled independently of the secondary region 142 located on the primary region 141 and the lower passage 116b located on the upper passage 116a and on the lower passage 116b, Wherein the secondary region (142) of the PTC heater (140) located is activated when the seat heating switch is turned on and the blower of the air conditioner is turned on. delete delete The method according to claim 1, Wherein an auxiliary blower (107) is installed in a connecting duct (106) connecting the seat vent (112e) and the seat (105) of the vehicle. delete An air conditioning case 110 having an air inlet 111 formed at its inlet side and a defrost vent 112a, a face vent 112b, floor vents 112c and 112d and a seat vent 112e formed at the outlet side, In a vehicle air conditioning system including an evaporator (101) and a heater core (102) installed inside a case (110) An upper passageway 116a toward the hot and warm air mixing chamber MC and a lower passageway 116b toward the seat vent 112e are formed on the downstream side of the heater core 102 by partition walls 115 A single PTC heater 140 is disposed on the upper passage 116a and the lower passage 116b, A seat side switching door 130 for opening and closing the lower passage 116b is provided at the inlet side of the lower passage 116b, A seat vent opening and closing door 118 is further provided on the side of the seat vent 112e to supply air that has passed through the region 142 of the PTC heater 140 located on the lower passage 116b to the floor vent 112d side and, The air flowing toward the floor vent 112d through the upper passage 116a and the air flowing toward the floor vent 112d through the lower passage 116b do not collide with the baffle 112d at the position where the floor vent 112d is formed, (117) is formed on the front side of the vehicle. The method according to claim 1, Wherein an inlet duct (119) is installed at one side of the air conditioning case (110) so as to allow air outside the air conditioning case (110) to flow toward the lower passage (116b) side.

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