KR20040080286A - Case of air conditioner for vehicle - Google Patents

Abstract

PURPOSE: An air conditioner case for a vehicle is provided to easily adjust temperature to temperature desired by a user and to improve the heating and cooling efficiency. CONSTITUTION: An air conditioner case(20) for a vehicle comprises an air inlet(21) formed to a side; a main passage(22) connected to the air inlet; a first branched passage(23) in which a heater core(12) is installed; a second branched passage(24) divided from the first branched passage; temperature doors(30,40) selectively opening and shutting the first and second branched passages; plural discharge outlets(27a,27b,27c) through which air, passing through the first and second branched passages, is discharged; and plural doors opening and shutting the discharge outlets. The first branched passage is branched from the main passage. A bypass passage(25) is disposed between the first branched passage and the second branched passage. The air conditioner case has an opening and shutting door opening and shutting the bypass passage.

Description

Air Conditioning Case for Vehicles {Case of air conditioner for vehicle}

The present invention relates to a case of a vehicle air conditioner, and more particularly, to a case of a vehicle air conditioner that can easily adjust the desired temperature, and can increase the cooling and heating efficiency of the air conditioner.

In general, a vehicle is provided with an air conditioning apparatus to maintain a comfortable temperature by providing a comfortable ride to the occupant by heating or cooling the inside / outside air to enter or circulate into the interior of the vehicle. Such an air conditioner for a vehicle includes a case having a plurality of air passages therein, a blower installed at one side of the case to blow air into and out of the case, an evaporator for cooling the introduced air, and It is basically provided with a heater core (heat core) for heating the air.

The automotive air conditioner includes a cooling system for cooling the interior of a vehicle, and a heating system for heating the interior of the vehicle. The cooling system is configured to cool the interior of the vehicle by heat exchange between the evaporator and the outdoor air in the process of circulating the refrigerant compressed by the compressor driven by the engine to the compressor through the condenser, the receiver dryer, the expansion valve and the evaporator. On the other hand, the heating system allows the coolant that has cooled the engine to pass through the heater core, and then the inside air or air blown by the blower's blower fan is exchanged with the coolant passing through the heater core and introduced into the warm state in the process of returning to the engine. It is configured to heat the interior of the car.

Various types of cases of automotive air conditioners have been developed, among which are horizontal type air conditioners in which an evaporator and a heater core are disposed almost horizontally. In this air conditioning case, the air can smoothly pass through the evaporator and the heater core, thereby reducing the flow resistance of the air and reducing the noise.

1 shows a horizontal type air conditioner as described above. Referring to the drawings, the air conditioner for automobiles includes an evaporator 11 and a heater core 12 in the case 1.

An air inlet 2 is provided at a lower side of the case 1, and the air introduced from the side through the air inlet 2 is changed in direction and flows upward.

On the upper side of the case 1, a plurality of outlets 6a, 6b, 6c are provided for supplying air into the cabin. That is, the floor outlet 6a for supplying air to the bottom of the vehicle interior, the vent outlet 6c for supplying the front of the vehicle interior, the defrost outlet 6b for supplying to the glass surface of the vehicle, and the like. In addition, a plurality of passages are provided in the case 1, the main passage 3 communicating with the air inlet 2, the warm passage 4 extending from the main passage 3, and the cold air. The passage 5 is formed.

On the other hand, the evaporator 11 and the heater core 12 are sequentially installed with respect to the flow direction of the air introduced from the air inlet (2), the evaporator 11 for heat exchange the air to a low temperature state It is provided over the main path 3 in the case 1 so that it may incline at a predetermined angle with respect to the flow direction of air. In addition, a heater core 12 is positioned above the evaporator 11, and the heater core 12 is used to heat-exchange the air at a high temperature, and extends across the warm passage 5 in the case 1. Is installed. The cold air passage 4 is positioned at the side of the warm passage 5 in which the heater core 12 is installed. The cold passage 4 serves to allow air to be bypassed without passing through the heater core 12. Do it.

In addition, a plurality of doors are rotatably installed in the case 1 to selectively open and close the passages and the outlets, respectively, and the temporal door 7 is formed at the branch point of the cold air passage 4 and the warm passage 5. ) Is installed so that air passing through the evaporator 11 passes through the heater core 12 or bypasses the heater core 12. A first direction switching door 8a is provided at the front end of the defrost outlet 6b to selectively open and close the floor outlet 6a and the defrost outlet 6b, and the defrost outlet 6b and the vent outlet 6c. The second direction change door 8b is provided between and selectively opens and closes the vent outlet 6c.

In the air-conditioning case for a vehicle as described above, the user switches the temporal door 7 to perform the cooling and heating mode. As shown in FIG. 1, the temporal door 7 is disposed in the middle to provide cooling and heating. An intermediate step, Mixing mode, allows the temperature to be properly adjusted.

However, as shown in FIG. 1, when the user wants to blow the air in both the floor outlet 6a and the vent outlet 6c in a state where the temperature is set in the mixing mode, the user may not mix the cold and warm air properly. A problem arises in which air at temperature cannot be contacted. That is, the user arranges the temporal door 7 in the middle as described above, closes the defrost outlet 6b with the first turning door 8a, and uses the second turning door 8b to open the vent outlet ( When 6c) and the floor outlet 6a are opened in half, respectively, the air introduced through the air inlet 2 is first cooled through the evaporator 11, and part of the heater core 12 of the warm passage 5 is opened. The air is changed into hot air 13 while passing through, and the remaining part becomes cold air 14 in a cooled state while passing through the cold air passage 4. These hot air 13 and cold air 14 must be mixed with each other at the portion 9 where the cold passage 4 and the warm passage 5 merge. However, the air 13 and 14 passing through each of the cold and warm passages 4 and 5 cannot form a layer and mix with each other, so that the low-temperature air 14 passes to the vent outlet 6c before being mixed. The hot air 13 passes through the floor outlet 6a. Therefore, the user receives a cold wind on the front surface, a problem that receives a hot wind from the floor.

The present invention has been made to solve the above problems, an object of the present invention is to provide a car air conditioning case that is easy to adjust to a desired temperature.

Another object of the present invention is to provide a car air conditioning case having high heating and cooling efficiency.

1 is a cross-sectional view showing a conventional automotive air conditioning case,

Figure 2 is a cross-sectional view showing the bi-level, mixing mode of the air conditioning case for a vehicle according to an embodiment of the present invention,

3 is a cross-sectional view showing the floor, heating mode of the automotive air conditioner of FIG.

Figure 4 is a cross-sectional view showing the floor, heating mode of the air conditioning case for a vehicle according to another embodiment of the present invention,

5 is a cross-sectional view showing the bi-level, mixing mode of the automotive air conditioner of FIG.

6 is a cross-sectional view showing the vent, the cooling mode of the air conditioning case for automobile of FIG.

7 is a cross-sectional view showing a floor, a heating mode of the air conditioning case for a vehicle according to another preferred embodiment of the present invention;

8 is a cross-sectional view showing the bi-level, mixing mode of the automotive air conditioner of FIG.

FIG. 9 is a cross-sectional view illustrating a vent and a cooling mode of the air conditioner case of FIG. 7;

<Brief description of symbols for the main parts of the drawings>

11; Evaporator 12: Heater Core

20: case 21: air inlet

22: main passage 23; First branch passage

24: second branch passage 25: bypass passage

26: mixing passage 27a: floor outlet

27b: defrost outlet 27c: vent outlet

28: condensate outlet 30, 40: temp door

32: bypass opening and closing door 42: auxiliary door

37a, 37b: first and second direction changing doors

In order to achieve the above object, the present invention provides an air inlet formed on one side, a main passage communicating with the air inlet, a first branch passage branched from the main passage and installed with a heater core, and the first branch. A second branch passage partitioned with a passage, a temporal door for selectively opening and closing the first and second branch passages, a plurality of discharge ports through which air passing through the first and second branch passages is discharged, and opening and closing the discharge openings In the automotive air conditioning case provided with a plurality of doors, there is provided a vehicle air conditioning case further comprising a bypass passage between the first branch passage and the second branch passage.

According to another feature of the invention, the bypass opening and closing door for opening and closing the bypass passage may be further provided.

In this case, the bypass opening and closing door may open the bypass passage when the temporal door closes the first branch passage, but may be in a state parallel to the flow of air passing through the second branch passage. have.

According to another feature of the present invention, the temporal door may be further provided with an auxiliary door for opening and closing the bypass passage, the auxiliary door may be formed to extend to the opposite side of the hinge axis of the temporal door.

In this case, the auxiliary door may open the bypass passage when the temporal door closes the first branch passage, but may be parallel to the flow of air passing through the second branch passage.

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

Figure 2 is a cross-sectional view of the air conditioning case for a vehicle according to an embodiment of the present invention.

Basic configuration of the air conditioning case for a vehicle according to the present invention is the same as the above-described conventional air conditioning case for automobiles. That is, an air inlet 21 is formed at one side of the case 20, and an evaporator 11 and a heater core 12 are provided inside the case. This is common to all the embodiments of the present invention to be described below, the reference numerals are all the same, the evaporator 11 and the heater core 12 is a conventional general evaporator and heater core as described above can be employed as it is. The same reference numerals as those in FIG. 1 are shown.

In the air conditioning case for a vehicle according to an embodiment of the present invention as shown in Figure 2, the case 20 has an air inlet 21 is formed on one side to allow air to flow into the interior, A blower unit (not shown) is connected to the air inlet 21 to allow air to flow into the case 20 through the air inlet 21.

The case 20 is divided into a plurality of passages, the main passage 22 communicating with the air inlet 21, and the first branch passage 23 and the second branch from the main passage 22 Branch passages 24 are formed by branching. Outlets of the passage extending from the first and second branch passages 23 and 24 are formed with outlets for discharging cold or warm air to the interior of the vehicle. By discharging the floor outlet 27a and the cold or warm air toward the car window to discharge the defrost outlet 27b and the cold or warm air toward the upper half of the vehicle interior, that is, the front part of the user. Vent outlets 27c are provided, which are connected to separate ducts (not shown) to allow cold or warm air to be supplied to the vehicle interior through various paths.

In addition, on the main passage 22 of the case 20, an evaporator 11 for exchanging air at a low temperature is inclined at a predetermined angle with respect to the flow direction of air, and branched from the main passage 11. On the first branch passage 23, a heater core 12 for heat-exchanging air at a high temperature is provided. Accordingly, the air introduced into the air inlet 21 always passes through the evaporator 11, and part of the air passes through the first branch passage 23 to become hot air, and part of the air passes through the second branch passage 23. The low temperature state after passing through the evaporator 11 is maintained as it is.

These first and second branch passages 23 and 24 are selectively opened and closed by the temporal doors 30 installed at the branch points, and the front ends of the defrost outlet 27b and the vent outlet 27c may be supplied to the vehicle interior. First and second direction switching doors 37a and 37b for adjusting the blowing direction of cold or warm air are provided to selectively open and close the floor outlet 27a, the defrost outlet 27b, and the vent outlet 27c, respectively. Of course, the installation form and structure of the direction change doors are not limited thereto, and any structure capable of opening and closing the floor outlet 27a, the defrost outlet 27b, and the vent outlet 27c may be used. The doors 30, 37a and 37b are formed of a plate-like member, one end of which is hinged to the inner wall of the case 20, and is rotated by a separate driving means (not shown).

The evaporator 11 and the heater core 12 may be disposed substantially horizontally in a slightly inclined state, respectively, and condensed water formed on the surface of the evaporator 11 by the evaporator 11 inclined at a predetermined angle is easily downward. It can flow down quickly, and prevent condensate from splashing. Condensate flowed down from the surface of the evaporator 11 is discharged to the outside through a separate condensate outlet (28).

On the other hand, the bypass passage 25 between the first branch passage 23 and the hinge shaft 31 of the temporal door 30, that is, between the branch points of the first branch passage 23 and the first and second branch passages. ) Is installed separately to facilitate the mixing of cold and warm in Mixing mode. That is, as shown in FIG. 2, the temporal door 30 opens both the first branch passageway 23 and the second branch passageway 24 to pass through the evaporator 11, and a part of the cool air is part of the first branch. Heated between the first branch passageway 23 and the branching point in a state where it is allowed to pass through the heater core 12 of the passageway 23, and a portion passes through the second branch passageway 24 in a cold state. Bypass the bypass passage 25 is bypassed without passing through the core 12, the cold air passing through the bypass passage 25, the hot air passing through the heater core 12 and the first and second It is to be better mixed in the mixing passage 26 where the branch passages (23, 24) meet. Therefore, the user can feel a more comfortable atmosphere without feeling the temperature difference in the bi-level mode in which both the floor and the vent are opened as shown in FIG. 2.

Meanwhile, according to another exemplary embodiment of the present invention, the bypass passage 25 as described above is introduced into the first branch passage 23 in the heating mode of Max Warm as shown in FIG. When some of the air to pass through the core 12 passes through the bypass passage 25 of the heater core 12 and the temperature of the warmth supplied to the vehicle interior is lowered, as shown in FIGS. 4 to 6. In addition, a separate bypass opening and closing door 32 for opening and closing the bypass passage 25 may be installed.

The bypass opening and closing door 32 may be installed to open and close the bypass passage 25 on the opposite side of the hinge shaft 31 of the temporal door 30, as shown in FIGS. 4 to 6. Although not shown, the hinge shaft may be installed on the side facing the heater core 12.

As described above, the bypass opening / closing door 32 closes the bypass passage 25 when the temporal door 30 closes the second branch passage 24, as shown in FIG. 4. Through the evaporator 11, the air introduced through the air is directed to the first branch passage 23 so as to pass through the heater core 12. Therefore, the fall of heating efficiency can be prevented at this time.

In addition, the bypass opening / closing door 32 may open the bypass passage 25 according to the extent to which the temporal door 30 opens the second branch passage 24. That is, as shown in FIG. 5, when the temporal door 30 partially opens the first and second branch passages 23 and 24, the bypass passage 25 is partially opened to allow the cold air to pass through the heater core. In order to better mix with the warmth, as in the cooling mode of FIG. 6, when the temporal door 30 closes the first branch passage 23, the bypass passage 25 is fully opened.

On the other hand, as can be seen in Figure 6, the bypass opening and closing door 32 is in a state substantially parallel to the forming direction of the second branch passage 24 in the state that the bypass passage 25 is fully open. It may be helpful to go straight to the air passing through the second branch passage (24). At this time, the bypass opening and closing door 32 is in a state parallel to the flow direction of air passing through the second branch passage 24 so that the cold air flows toward the first branch passage 23 provided with the heater core 12. This prevents the problem of lowering the cooling efficiency. That is, the bypass opening / closing door 32 at this time acts as a blocking wall for blocking the air passing through the second branch passage 24 from flowing in the direction of the first branch passage 23, and acts as a block for air flow. It is a function that gives straightness.

Meanwhile, as described above, the bypass passage 25 may be opened and closed by the auxiliary door 42 provided in the temporal door 40. That is, as in the above-described embodiment, having a separate door for opening and closing the bypass passage 25 may increase the weight of the entire air conditioner and increase the number of parts to increase the cost. Therefore, as shown in FIGS. 7 to 9, the auxiliary door 42 is further formed toward the rear of the temporal door 40 to open and close the bypass passage 25 according to the movement of the temporal door 40. This auxiliary door 42 may be formed to extend opposite the hinge axis 41 at a portion near the hinge axis 41 of the temporal door 40 as shown in the figure. Of course, the shape of the auxiliary door 42 may be applied to any shape that shares the hinge shaft 41 of the temporal door 40.

As described above, the auxiliary door 42 is rotated according to the rotation of the temporal door 40. As shown in FIG. 7, when the temporal door 40 closes the second branch passage 24, the bypass is bypassed. The passage 25 is closed so that the air introduced through the air inlet 21 leads to the first branch passage 23 so that all of the air passing through the evaporator 11 can pass through the heater core 12. Prevents deterioration of heating efficiency.

In addition, the auxiliary door 42 may open the bypass passage 25 according to the extent that the temporal door 40 opens the second branch passage 24. This is because the auxiliary door 42 rotates together with the rotation of the temporal door 40. As shown in FIG. 8, the temporal door 40 partially opens the first and second branch passages 23 and 24. In this case, the bypass passage 25 may be partially opened to allow the cool air to mix with the warmth passed through the heater core, and the temporal door 40 may include the first branch passage 23 as in the cooling mode of FIG. 9. In the case of closing the bypass passage 25, all of them are opened.

On the other hand, the auxiliary door 42 may also have a role to further increase the cooling effect in the cooling mode of Max Cool (Max Cool). That is, as shown in FIG. 9, the auxiliary door 42 is parallel to the flow of air passing through the second branch passage 24 in a state where the temporal door 40 closes the first branch passage 23. Since the auxiliary door 42 is in a state, straightness is further increased in the flow of air, and the flow of air to the first branch passage 23 can be blocked to some extent. Therefore, the air can be taken out to the outlet side as it is to further increase the cooling efficiency.

According to the air conditioning case for a vehicle according to the present invention as described above, the following effects can be obtained.

First, by providing a bypass passage between the branch point of the first branch passage and the first and second branch passages provided with the heater core, it is possible to improve the mixing of the cold and warm air in the mixing mode in which cold and warm air are mixed. In addition, the user can maintain a proper temperature to create a comfortable vehicle interior environment.

Second, it is possible to prevent the deterioration of the heating efficiency in the heating mode by opening and closing the bypass passage.

Third, the door that opens and closes the bypass passage blocks the cold air from flowing toward the branch passage where the heater core is installed in the heating mode, and increases cooling efficiency to increase the cooling efficiency.

Fourth, by forming the door to open and close the bypass passage integrally with the temper door can reduce the weight of the air conditioning apparatus, reduce the cost, and improve the productivity.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (6)

An air inlet formed on one side, a main passage communicating with the air inlet, a first branch passage branched from the main passage, in which a heater core is installed, a second branch passage partitioned from the first branch passage, In a car air conditioner case comprising a temporal door for selectively opening and closing the first and second branch passages, a plurality of discharge ports through which the air passing through the first and second branch passages is discharged, and a plurality of doors for opening and closing the discharge openings. , An air conditioning case for a vehicle, further comprising a bypass passage between the first branch passage and the second branch passage. The method of claim 1, Air conditioning case for a vehicle, characterized in that the bypass opening and closing door for opening and closing the bypass passage is further provided. The method of claim 2, The bypass opening / closing door opens the bypass passage when the temporal door closes the first branch passage, so that the bypass door is parallel to the flow of air passing through the second branch passage. Air conditioning case. The method of claim 1, The temporal door further comprises an auxiliary door for opening and closing the bypass passage. The method of claim 4, wherein And the auxiliary door is formed to extend to the opposite side of the hinge shaft of the temp door. The method according to claim 4 or 5, The auxiliary door opens the bypass passage when the temporal door closes the first branch passage, but is in a state parallel to the flow of air passing through the second branch passage. case.