Air conditioning apparatus for vehicle, comprising blower unit

Abstract

Disclosed is an air conditioning apparatus for a vehicle, comprising a blower unit having an improved structure, which allows a blower motor and a case to be detachably configured, while also considering mold release of the case, thereby satisfying both manufacturability and serviceability. The air conditioning apparatus for a vehicle comprising a blower unit comprises: an air conditioning unit having at least one heat exchanger and discharging conditioned air into a vehicle interior; and the blower unit introducing inside air or outside air and blowing the introduced air into the air conditioning unit, wherein the blower unit includes: a blower wheel; a blower motor rotating the blower wheel; and a blower case covering the blower wheel and the blower motor, wherein the blower case is divided into a plurality of case parts, and at least one of the divided case parts is configured to be detachable in a direction perpendicular to a rotary shaft of the blower motor.

Description

Air conditioning unit for vehicles equipped with a blower unit

[0001] The present invention relates to an air conditioning device for a vehicle, and more particularly, to an air conditioning device for a vehicle equipped with a blower unit having an improved assembly structure in a type in which the blower is vertically arranged in the engine room.

[0002] Typically, a vehicle air conditioning system is a device that heats or cools air by introducing it from outside the vehicle into the cabin or circulating it within the vehicle, thereby cooling or heating the vehicle's interior. The air conditioning case contains an evaporator for cooling and a heater core for heating.

[0003] The refrigerant system of an air conditioning unit consists of a compressor that compresses and transmits refrigerant, a condenser that condenses the high-pressure refrigerant transmitted from the compressor, an expansion valve that condenses the refrigerant condensed and liquefied in the condenser, and an evaporator that cools the air discharged into the cabin by absorbing the latent heat of vaporization of the refrigerant through heat exchange with the air transmitted into the vehicle interior through the evaporation of the low-pressure liquid refrigerant condensed by the expansion valve.

[0004] A vehicle air conditioning system is configured to selectively blow air cooled or heated by an evaporator or a heater core to various parts of the vehicle interior using a door for switching the blowing mode. Furthermore, the vehicle air conditioning system includes a blower unit for selectively drawing in internal or external air and blowing the air into an air conditioning case. Referring to Fig. 1, a conventional vehicle air conditioning system includes a blower unit (1) and an air conditioning unit. The air conditioning unit includes an air conditioning case, a cooling heat exchanger, and a heating heat exchanger.

[0005] The air conditioning case is formed with an air inlet for drawing in air and an air outlet for discharging air into the interior, and an air flow path is formed inside. The air conditioning unit is equipped with a heat exchanger module (2) placed on the engine room side of the vehicle and a distribution module (5) placed on the interior side of the vehicle. The heat exchanger module (2) and the distribution module (5) are connected on both sides in the front-rear direction of the vehicle based on the vehicle's dash panel (6) to form the air conditioning case.

[0006] A through hole is formed in the dash panel (6) to fasten the distribution module (5) and the heat exchanger module (2) by penetrating them in the front-rear direction of the vehicle. A fastening portion is formed in the end side of the distribution module (5) to be coupled with the heat exchanger module (2), and a fastening portion corresponding to the fastening portion of the heat exchanger module (2) is also formed in the distribution module (5). A cooling heat exchanger and a heating heat exchanger are sequentially provided in the air flow direction of the air conditioner case to exchange heat with the air passing therethrough. The cooling heat exchanger is composed of an evaporator that cools the air by exchanging heat between the refrigerant and the air, and the heating heat exchanger is composed of an indoor heat exchanger. The indoor heat exchanger is arranged downstream of the evaporator in the air flow direction.

[0007] In a conventional vehicle air conditioning device, the blower motor rotation shaft of the blower unit (1) extends in the front-rear direction of the vehicle, and the blower motor is positioned at the front of the vehicle. An outside air cover (3) is attached to the upper part of the outside air inlet, and air drawn in through the outside air inlet or the inside air inlet passes through an air filter and is blown toward the heat exchanger module (2) of the air conditioning case by a blower wheel rotated by the blower motor. In addition, the air filter is detachably assembled through the upper opening of the blower unit (1), and a filter cover (4) for covering the upper part of the air filter is attached to the blower unit (1).

[0008] Conventional vehicle air conditioners have a problem in that, due to their assembly structure, only the blower motor of the blower unit (1) can be removed for after-sales service. To solve this problem, a technology has been developed that allows a portion of the blower case to be removed separately for removal of the blower motor, thereby allowing the blower motor and case to be removed together. However, in the case of this case removal structure, there is a problem in that the blower motor requires axial movement space, making removal impossible due to environmental constraints in the after-sales service workspace.

[0009] In order to solve such conventional problems, the present invention provides an air conditioning device for a vehicle equipped with a blower unit having an improved structure that can satisfy both manufacturability and ease of after-sales service by configuring the blower motor and the case to be detachable while simultaneously considering the mold removal of the case.

[0010] An air conditioning device for a vehicle equipped with a blower unit according to the present invention comprises an air conditioning unit having at least one heat exchanger and configured to discharge conditioned air into a vehicle interior, and a blower unit for introducing indoor or outdoor air and blowing air to the air conditioning unit, wherein the blower unit comprises a blower wheel, a blower motor for rotating the blower wheel, and a blower case for covering the blower wheel and the blower motor, wherein the blower case is divided into a plurality of cases, and at least one of the divided cases is configured to be detachable in a direction orthogonal to a rotation axis of the blower motor.

[0011] The direction orthogonal to the rotation axis of the above blower motor is the upper direction.

[0012] The above blower case is divided into three cases, and the rotation axis of the blower motor is formed to extend in the front-back direction of the vehicle. The upper case is mold-removed in the up-and-down direction, and the two lower cases are mold-removed in the front-and-back direction of the vehicle.

[0013] The blower case comprises: a first case configured to be detachable in the vertical direction; a second case and a third case configured to be detachable from each other in the front-rear direction of the vehicle, and the first case is separated in the upper direction from the second case and the third case.

[0014] The second case is placed in front of the third case in the forward-rear direction of the vehicle.

[0015] The mold removal directions of the second and third cases are formed in opposite directions in the front-rear direction of the vehicle.

[0016] On the inner surfaces of the second case and the third case, a second slope and a third slope are formed, each having an inclined shape that spreads out in the front-rear direction of the vehicle, and the second slope and the third slope form a continuous surface without a step between each other.

[0017] A first slope having an inclined shape that spreads out in the front-rear direction of the vehicle is formed on the inner surface of the first case, and the first slope forms a continuous surface without a step with respect to the second slope and the third slope.

[0018] The second slope formed in the second case is formed so that the inner cross-sectional area of ​​the second case becomes wider as it goes from the front to the rear of the vehicle, and the third slope formed in the third case is formed so that the inner cross-sectional area of ​​the third case becomes narrower as it goes from the front to the rear of the vehicle while facing the second slope in the front-to-rear direction of the vehicle.

[0019] The first gradient formed in the first case is formed to face the second and third gradients in the vertical direction and correspond to the second and third gradients.

[0020] A groove with a streamlined cross-section shape is formed in each of the first and second cases, so that when the first and second cases are joined in the vertical direction, a single circular motor insertion hole is formed.

[0021] A plurality of motor fastening parts are formed to fasten the blower motor to the first case and the second case, and the first case and the blower motor are connected through the motor fastening parts formed in the first case and can be separated from the second case and the third case.

[0022] The motor fastening parts formed in the first case and the second case are arranged in multiple radial directions when viewed from the front of the vehicle, and the screw fastening directions of the motor fastening parts are all parallel to the front-rear direction of the vehicle.

[0023] In order to connect the second case and the third case to each other, a plurality of front-rear fastening parts that are screw-fastened in the front-rear direction of the vehicle are provided, and in order to connect the second case and the third case to the first case, a plurality of upper-lower fastening parts that are screw-fastened in the vertical direction are provided.

[0024] A cooling hole is formed in the above blower case to supply cooling air to the blower motor, and the parting line between the upper case and the two lower cases is arranged so as not to interfere with the cooling hole.

[0025] A cooling hole is formed in the above blower case to supply cooling air to the blower motor, and the cooling hole is formed in the second case.

[0026] The above cooling hole is formed to penetrate the second case in the front-rear direction.

[0027] The air conditioning system for a vehicle equipped with a blower unit according to the present invention facilitates maintenance and reassembly by separating only the upper case from the lower case when the blower case must be separated for after-sales service of the blower motor or the like. In addition, problems such as air leaks and noise caused by steps within the blower case can be resolved.

[0028] Figure 1 is a plan view illustrating a conventional vehicle air conditioning system.

[0029] FIG. 2 is a perspective view schematically illustrating an air conditioning device for a vehicle according to an embodiment of the present invention.

[0030] Figure 3 is a side cross-sectional view illustrating an air conditioning device for a vehicle according to an embodiment of the present invention.

[0031] Figure 4 is a plan view illustrating a vehicle air conditioning device according to one embodiment of the present invention.

[0032] FIG. 5 is a perspective view showing a blower case with the blower motor separated according to one embodiment of the present invention.

[0033] Figure 6 is a front view of Figure 5,

[0034] Figure 7 is a plan view of Figure 5,

[0035] Fig. 8 is a perspective view showing the first case in Fig. 5 separated.

[0036] FIG. 9 is a perspective view illustrating a first case according to an embodiment of the present invention.

[0037] Figure 10 is an enlarged perspective view of a portion of Figure 8.

[0038] Figure 11 is a plan view of Figure 10.

[0039] The technical configuration of a vehicle air conditioning system equipped with a blower unit is described in detail according to the attached drawings below.

[0040] In the following description, the up-down direction of Fig. 4 is the front-back direction of the vehicle, and the left-right direction is the vehicle width direction.

[0041] Referring to FIGS. 2 to 4, an air conditioning device for a vehicle according to an embodiment of the present invention is an air conditioning device that uses a heat pump system installed in an electric vehicle, etc., and includes a blower unit (100) and an air conditioning unit (400). The air conditioning unit (400) is configured to discharge conditioned air into the interior of the vehicle, and includes an air conditioning case and at least one heat exchanger, and the heat exchanger is composed of a cooling heat exchanger and a heating heat exchanger.

[0042] The air conditioning case is formed with an air inlet (211) for introducing air and an air outlet for discharging air into the interior, and an air flow path is formed inside. The air conditioning unit (400) is equipped with a heat exchanger module (200) placed on the vehicle engine room side and a distribution module (300) placed on the vehicle interior side.

[0043] Based on the dash panel (500) of the vehicle, the heat exchanger module (200) and the distribution module (300) are coupled on both sides in the front-rear direction of the vehicle to form an air conditioning unit (400). A through hole is formed in the dash panel (500) to fasten the distribution module (300) and the heat exchanger module (200) by penetrating them in the front-rear direction of the vehicle. A fastening portion (209) is formed in the end side of the distribution module (300) to be coupled with the heat exchanger module (200), and a fastening portion (309) corresponding to the fastening portion (209) of the heat exchanger module (200) is also formed in the distribution module (300).

[0044] A cooling heat exchanger and a heating heat exchanger are sequentially installed in the air flow direction of the air passage of the air conditioner case to exchange heat with the air passing through them. The cooling heat exchanger is composed of an evaporator (210) that cools the air by exchanging heat between the refrigerant and the air. The heating heat exchanger is composed of an indoor heat exchanger (220). The indoor heat exchanger (220) is placed downstream of the evaporator (210) in the air flow direction.

[0045] That is, the compressor, indoor heat exchanger (220), outdoor heat exchanger, expansion valve, and evaporator (210) are sequentially installed in the refrigerant line. In addition, the indoor heat exchanger (220) heats the air by exchanging heat with the high-temperature, high-pressure refrigerant discharged from the compressor and dissipating the heat, and the refrigerant throttled by the expansion valve cools the air by exchanging heat with the air in the evaporator (210).

[0046] Meanwhile, a heat exchanger (310) is further provided in the distribution module (300). The heat exchanger (310) is disposed downstream of the indoor heat exchanger (220) in the direction of air flow. The heat exchanger (310) is installed at a similar height in the vertical direction on the rear side of the indoor heat exchanger (220), and the indoor heat exchanger (220) and the heat exchanger (310) are disposed in parallel in the vertical direction. In addition, the heat exchanger (310) is composed of a PTC heater (Positive Temperature Cofficient Heater), and functions as an auxiliary heating heat exchanger that generates heat by applying power and heats the air passing through it.

[0047] The airflow of the air conditioning case is divided into upper, lower, left, and right channels, forming four zones. Furthermore, the vehicle air conditioning system is configured to independently control the airflow in four different areas within the vehicle interior. Specifically, the vehicle air conditioning system can independently control the four zones: the front driver's seat, front passenger's seat, rear left (behind the driver's seat), and rear right (behind the passenger's seat). Therefore, independent airflow control is possible for all areas of the vehicle interior, enhancing freedom in air conditioning and enhancing passenger satisfaction.

[0048] The airflow path of the air conditioning case is provided with an upper path and a lower path. The upper path is further divided into an upper left path and an upper right path, and the lower path is further divided into a lower left path and a lower right path. The airflow path of the air conditioning case is divided into left and right paths by a separator provided in the central portion in the direction of the vehicle width. In addition, the airflow path is divided into an upper path and a lower path based on a support member (443) formed approximately in the central portion in the vertical direction.

[0049] Meanwhile, the indoor heat exchanger (220) and the electric heater (310) are arranged in the central portion in the vertical direction. In addition, the air flow path of the air conditioning case forms a hot air flow path (203) in the central portion in the vertical direction, and cold air flow paths (201) and (202) are formed above and below the hot air flow path (203), respectively. More specifically, the upper flow path is composed of an upper cold air flow path (201) and an upper hot air flow path, and the lower flow path is composed of a lower cold air flow path (202) and a lower hot air flow path.

[0050] That is, the upper flow path is divided vertically based on the upper bulkhead (441) into an upper cold air flow path (201) and an upper hot air flow path, and the lower flow path is divided vertically based on the lower bulkhead (442) into a lower hot air flow path and a lower cold air flow path (202). Ultimately, the air flow path of the air conditioning case is sequentially formed with an upper cold air flow path (201), a hot air flow path (203), and a lower cold air flow path (202) from the top to the bottom.

[0051] A hot air path (203) is formed between the upper bulkhead (441) and the lower bulkhead (442). The upper bulkhead (441) supports the upper portion of the indoor heat exchanger (220) and the electric heater (310), and the lower bulkhead (442) supports the lower portion of the indoor heat exchanger (220) and the electric heater (310). In addition, the hot air path (203) between the indoor heat exchanger (220) and the electric heater (310) is not divided into upper and lower portions, but forms a single space.

[0052] Meanwhile, an upstream temp door is provided between the evaporator (210) and the indoor heat exchanger (220), and a downstream temp door is provided downstream of the indoor heat exchanger (220) in the air flow direction. The upstream temp door and the downstream temp door control the air temperature by adjusting the amount of cold air or hot air. In addition, the upstream temp door is composed of a front seat upstream temp door (241) and a rear seat upstream temp door (242), and the downstream temp door is composed of a front seat downstream temp door (321) and a rear seat downstream temp door (323).

[0053] The upper temp door (241) on the front seat is arranged between the evaporator (210) and the indoor heat exchanger (220) to control the opening between the upper cold air passage (201) and the upper hot air passage, and the upper temp door (242) on the rear seat is arranged between the evaporator (210) and the indoor heat exchanger (220) to control the opening between the lower cold air passage (202) and the lower hot air passage.

[0054] The front seat downstream side temp door (321) is positioned downstream of the electric heater (310) in the air flow direction to control the air temperature of the front seat, and the rear seat downstream side temp door (323) is positioned downstream of the electric heater (310) in the air flow direction to control the air temperature of the rear seat. In addition, a rear seat air volume door (322) is further provided downstream of the rear seat downstream side temp door (323) in the air flow direction to control the amount of air discharged to the rear seat.

[0055] In addition, the air outlet of the air conditioning case is composed of a front seat outlet and a rear seat outlet (304). The front seat outlet is composed of a defrost vent (301), an indirect vent (308), a face vent (302), and a front seat floor vent (303), and the rear seat outlet (304) is composed of a console vent and a rear seat floor vent. The air conditioning case has a plurality of mode doors. The mode doors are composed of a defrost door (331) that controls the opening of the defrost vent (301), a vent door (332) that controls the opening of the indirect vent (308) and the face vent (302), a front floor door (333) that controls the opening of the front seat floor vent (303), and a rear door that controls the opening of the console vent and the rear seat floor vent.

[0056] Among the air conditioning units (400), an air inlet (211), an evaporator (210), an indoor heat exchanger (220), a front seat upstream side temp door (241), and a rear seat upstream side temp door (242) are arranged in a heat exchanger module (200) installed on the engine room side with respect to the dash panel (500). In addition, among the air conditioning units (400), a distribution module (300) installed on the vehicle interior side with respect to the dash panel (500) is arranged with an electric heater (310), a front seat downstream side temp door (321), a rear seat downstream side temp door (323), a rear seat air volume door (322), an air outlet, and a mode door. Meanwhile, the air conditioning case may further include a baffle (390) for closing warm air.

[0057] Meanwhile, the blower unit (100) blows air to the air conditioning unit (400) by introducing internal or external air, and includes a blower case (700), an air filter, a blower wheel, and a blower motor (790). An internal air inlet and an external air inlet are formed in the blower case (700). The internal air inlet is for introducing internal air, and is formed to extend rearward toward the dash panel (500) that communicates with the interior of the vehicle. The external air inlet is for introducing external air, and is opened upward, and an external air cover (190) is attached to the opening.

[0058] An intake door is further provided inside the blower case (700) of the blower unit (100). The intake door operates between the internal air inlet and the external air inlet to control the amount of internal and external air flowing in. An actuator (191) for operating the intake door is installed on one side of the blower unit (100). An air filter is provided inside the blower case (110) to filter air passing through it. A filter cover (192) that covers the air filter is assembled to the blower case (700).

[0059] The blower wheel is coupled to the rotation shaft of the blower motor (790) and, as it rotates, blows the inside or outside air that flows in the axial direction in the radial direction and supplies it to the interior of the air conditioning unit (400). The blower motor (790) rotates the blower wheel, and the blower motor (790) is positioned at the front of the vehicle and the rotation shaft extends in the front-rear direction of the vehicle. The blower case (700) covers the blower wheel and the blower motor (790).

[0060]

[0061] Referring further to FIGS. 5 to 11, the blower case (700) is divided into a plurality of cases. At least one of the divided cases is configured to be detachable in a direction orthogonal to the rotation axis of the blower motor (790). In this case, the direction orthogonal to the rotation axis of the blower motor is the upper direction. That is, the blower case (700) is divided into three cases. The upper case is mold-removed in the up-and-down direction, and the two lower cases are mold-removed in the front-rear direction of the vehicle.

[0062] With this configuration, when the blower case (700) needs to be separated for A / S of the blower motor (790), etc., maintenance is easy by separating only the upper case from the lower case, and reassembly is easy.

[0063] The blower case (700) includes a first case (710), a second case (720), and a third case (730). The first case (710) is configured to be detachable in the vertical direction. The second case (720) and the third case (730) are configured to be detachable from each other in the front-rear direction of the vehicle. In addition, the first case (710) is configured to be detachable in the upper direction with respect to the second case (720) and the third case (730). The second case (720) is arranged in front of the third case (730) in the front-rear direction of the vehicle. The mold-removing directions of the second case (720) and the third case (730) are formed in opposite directions in the front-rear direction of the vehicle. That is, the mold-removing direction of the second case (720) is forward, and the mold-removing direction of the third case (730) is rearward.

[0064] By configuring the upper case as one piece and the lower case as two pieces, a step difference between the upper and lower cases can be prevented during assembly. This step difference is inevitably created by the gradient (incline) applied to the inside of the case during the mold removal process. Since the mold direction of the upper case can be formed differently from the mold directions of the two lower cases, a step difference due to the gradient can be prevented during case assembly. This effect will be explained in detail later.

[0065] In addition, a second slope (725) is formed in the second case (720), and a third slope (735) is formed in the third case (730). The second slope (725) is formed in an inclined shape that is widened in the front-rear direction of the vehicle (in the mold-out direction) on the inner surface of the second case (720). The third slope (735) is formed in an inclined shape that is widened in the front-rear direction of the vehicle (in the mold-out direction) on the inner surface of the third case (730). In this case, the second slope (725) and the third slope (735) form continuous surfaces without steps.

[0066] In addition, a first slope (715) is formed in the first case (710). The first slope (715) is formed in an inclined shape that spreads out in the front-rear direction of the vehicle (mold removal direction) on the inner surface of the first case (710). The first slope (715) forms a continuous surface without a step with respect to the second slope (725) and the third slope (735).

[0067] More specifically, the second slope (725) formed in the second case (720) is formed so that the inner cross-sectional area of ​​the second case (720) becomes wider as it goes from the front to the rear of the vehicle. In addition, the third slope (735) formed in the third case (730) is formed so that the inner cross-sectional area of ​​the third case (730) becomes narrower as it goes from the front to the rear of the vehicle while facing the second slope (725) in the front-to-rear direction of the vehicle.

[0068] In addition, the first slope (715) formed in the first case (710) is formed to face the second slope (725) and the third slope (735) in the vertical direction and correspond to the second slope (725) and the third slope (735). The second case (720) is fastened to the front of the third case (730) to form a lower case. The first case (710) is fastened to the upper part of the assembly of the second case (720) and the third case (730).

[0069] In the assembled state of the blower case (700), the second slope (725) formed on the inner surface of the second case (720) has a shape that becomes wider as it goes toward the rear. The second slope (725) makes it easy to remove the mold during injection molding of the second case (720). If the second slope (725) does not exist (is in a straight shape), removing the mold of the second case (720) becomes difficult or impossible. In addition, the third slope (735) formed on the inner surface of the third case (730) has a shape that becomes wider as it goes toward the front. As illustrated in Fig. 11, in the state where the second case (720) and the third case (730) are connected in the front-back direction, the inner diameter is largest at the parting line, which is the connection portion between the two cases.

[0070] Likewise, if the third slope (735) is absent (if it is in a straight line shape), it becomes difficult or impossible to remove the mold from the third case (730). In addition, when the blower case (700) is assembled, the first slope (715) formed on the inner surface of the first case (710) has a shape corresponding to the shapes of the second slope (725) and the third slope (735) of FIG. 11. If the first slope (715) is absent (if it is in a straight line shape), it becomes difficult or impossible to remove the mold from the first case (710).

[0071] In this way, a gradient must inevitably be formed on the inner surface of the case to facilitate the smooth removal of the mold. However, when the case is formed by applying such a gradient, a step is generated, which acts as a resistor in the environment of the scroll structure flowing inside the blower case (700), thereby generating noise. The present invention can solve the problem caused by such a step by configuring the mold removal direction of the first case (710), which is the upper case, differently from that of the second case (720) and the third case (730), which are the lower cases. As a result, problems such as air leaks and noise caused by the step inside the blower case (700) can be solved.

[0072] Meanwhile, a streamlined cross-sectional groove is formed in each of the first case (710) and the second case (720). That is, a first streamlined groove (711) is formed in the first case (710), and a second streamlined groove (721) is formed in the second case (720). When the first case (710) and the second case (720) are joined in the vertical direction, a single circular motor insertion hole (740) is formed. A blower motor (790) is inserted and assembled through the motor insertion hole (740). In addition, an inlet ring (731) is formed in the third case (730) to allow air passing through the air filter to flow toward the blower wheel.

[0073] A plurality of motor fastening portions for fastening a blower motor (790) to the first case (710) and the second case (720) are formed. The plurality of motor fastening portions formed in the first case (710) and the second case (720) are arranged radially when viewed from the front of the vehicle. In this case, the screw fastening directions of the motor fastening portions are all formed in a direction parallel to the front-rear direction of the vehicle. The motor fastening portion includes a first motor fastening portion (751), a second motor fastening portion (752), and a third motor fastening portion (753). The first motor fastening portion (751), the second motor fastening portion (752), and the third motor fastening portion (753) are arranged radially along the periphery of the motor insertion hole (740) in the front view.

[0074] In this case, the first case (710) and the blower motor (790) are coupled through the motor fastening portion formed in the first case (710) and can be separated from the second case (720) and the third case (730). That is, the blower motor (790) is assembled to the blower case (700) through screw fastening at three locations through the first motor fastening portion (751), the second motor fastening portion (752), and the third motor fastening portion (753).

[0075] In order to service the blower motor (790), by loosening the screw fastening of the second motor fastening part (752) and the third motor fastening part (753), the blower motor (790) is only fixed to the first case (710) via the first motor fastening part (751). Thereafter, by loosening the screws of the upper and lower fastening parts that fasten the first case (710), the second case (720), and the third case (730), the first case (710) and the blower motor (790) assembly can be separated upward from the second case (720) and the third case (730) assembly.

[0076] In addition, the blower case (700) is provided with front-rear fastening parts and upper-lower fastening parts. The front-rear fastening parts are provided in multiple numbers, and are fastened with screws in the front-rear direction of the vehicle to fasten the second case (720) and the third case (730) to each other. The upper-lower fastening parts are provided in multiple numbers, and are fastened with screws in the upper-lower direction to fasten the second case (720) and the third case (730) to the first case (710).

[0077] The front-rear fastening portion includes a first front-rear fastening portion (764), a second front-rear fastening portion (765), a third front-rear fastening portion (766), a fourth front-rear fastening portion (767), and a fifth front-rear fastening portion (768). The upper and lower fastening portion includes a first upper and lower fastening portion (761), a second upper and lower fastening portion (762), and a third upper and lower fastening portion (763). The number of front-rear fastening portions and the upper and lower fastening portions can be appropriately increased or decreased and their arrangement can be changed depending on the shape and size of the blower case (700).

[0078] In addition, a cooling hole (780) is formed in the blower case (700) to supply cooling air to the blower motor (790). The cooling hole (780) is formed to penetrate the second case (720) in the front-back direction. The cooling hole (780) communicates the air flow path inside the blower case (700) with the inside where the blower motor (790) is mounted, thereby cooling the blower motor (790) by sending some of the air flowing in the air flow path inside the blower case (700) toward the blower motor (790).

[0079] In this case, the parting line between the upper case (first case) and the two lower cases (second case and third case) is arranged so as not to interfere with the cooling hole (780). In addition, the third upper and lower fastening part (763) arranged adjacent to the cooling hole (780) is formed above the cooling hole (780), so that it does not interfere with the cooling hole (780) when the first case (710) is separated upward. That is, the cooling hole (780) is formed in the second case (720), and when the first case (710) is separated upward, it does not affect the cooling hole (780), and enables the mold removal of the first case (710) in the vertical direction.

[0080]

[0081] While the vehicle air conditioning system equipped with a blower unit according to the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and anyone skilled in the art will understand that various modifications and equivalent embodiments are possible. Therefore, the true scope of technical protection should be determined by the technical spirit of the appended claims.

Claims

1. An air conditioning unit having at least one heat exchanger and configured to discharge conditioned air into the vehicle interior, and a blower unit for introducing indoor or outdoor air and blowing air into the air conditioning unit, The above blower unit comprises a blower wheel, a blower motor that rotates the blower wheel, and a blower case that covers the blower wheel and the blower motor. The above blower case is divided into multiple parts, An air conditioning system for a vehicle having a blower unit, at least one of the split cases being configured to be detachable in a direction orthogonal to the rotational axis of the blower motor.

2. In paragraph 1, An air conditioning device for a vehicle equipped with a blower unit, characterized in that the direction orthogonal to the rotation axis of the blower motor is upward.

3. In paragraph 2, The above blower case is divided into three cases, The rotation axis of the above blower motor is formed to extend in the front-rear direction of the vehicle, An air conditioner for a vehicle equipped with a blower unit, characterized in that the upper case is molded in the up-down direction, and the two lower cases are molded in the front-back direction of the vehicle.

4. In paragraph 3, The above blower case: A first case configured to be detachable in the vertical direction; It has a second case and a third case that are detachable from each other in the front-back direction of the vehicle, The above first case is an air conditioning device for a vehicle equipped with a blower unit that is separated upwardly for the second case and the third case.

5. In paragraph 4, An air conditioner for a vehicle equipped with a blower unit, characterized in that the second case is arranged in front of the third case in the forward-reverse direction of the vehicle.

6. In paragraph 4, An air conditioner for a vehicle equipped with a blower unit in which the mold removal directions of the second case and the third case are formed in opposite directions in the front-rear direction of the vehicle.

7. In paragraph 5, On the inner surfaces of the second and third cases, second and third slopes are formed, respectively, in an inclined shape that spreads out in the front-rear direction of the vehicle. An air conditioning device for a vehicle equipped with a blower unit, characterized in that the second and third slopes form continuous surfaces without any steps between them.

8. In paragraph 7, On the inner surface of the first case, a first gradient is formed in a shape that is inclined in the forward and backward direction of the vehicle. An air conditioning device for a vehicle equipped with a blower unit, characterized in that the first gradient forms a continuous surface without steps with respect to the second gradient and the third gradient.

9. In paragraph 8, The second gradient formed in the second case is formed so that the inner cross-sectional area of ​​the second case becomes wider as it goes from the front to the rear of the vehicle. An air conditioner for a vehicle equipped with a blower unit, wherein a third gradient formed in a third case is formed such that the inner cross-sectional area of ​​the third case becomes narrower from the front to the rear of the vehicle while facing the second gradient in the forward-rear direction of the vehicle.

10. In paragraph 9, An air conditioner for a vehicle equipped with a blower unit in which a first gradient formed in a first case faces the second gradient and the third gradient in the vertical direction and is formed to correspond to the second gradient and the third gradient.

11. In paragraph 5, An air conditioner for a vehicle equipped with a blower unit, characterized in that a streamlined cross-sectional groove is formed in each of the first case and the second case, and a single circular motor insertion hole is formed when the first case and the second case are joined in the vertical direction.

12. In paragraph 5, A plurality of motor fastening parts are formed to fasten the blower motor to the first case and the second case. An air conditioning device for a vehicle equipped with a blower unit, characterized in that the blower motor is separated from the second case and the third case while the first case and the blower motor are connected through a motor connection formed in the first case.

13. In paragraph 12, The motor connecting parts formed in the first and second cases are arranged radially in multiple numbers when viewed from the front of the vehicle. An air conditioner for a vehicle equipped with a blower unit in which the screw fastening direction of the motor fastening part is all parallel to the front-rear direction of the vehicle.

14. In paragraph 5, In order to connect the second case and the third case to each other, a plurality of front-back and rear-back fastening parts are provided that are screw-fastened in the front-back direction of the vehicle. An air conditioner for a vehicle having a blower unit having a plurality of upper and lower fastening members that are screw-fastened in the upper and lower directions to fasten the second and third cases to the first case.

15. In paragraph 5, A cooling hole is formed in the above blower case to supply cooling air to the blower motor. An air conditioning system for a vehicle equipped with a blower unit, characterized in that the parting line between the upper case and the two lower cases is arranged so as not to interfere with the cooling hole.

16. In paragraph 5, A cooling hole is formed in the above blower case to supply cooling air to the blower motor. An air conditioning device for a vehicle equipped with a blower unit, characterized in that the cooling hole is formed in the second case.

17. In paragraph 16, An air conditioner for a vehicle having a blower unit formed so as to penetrate the second case in the forward and backward directions, wherein the cooling hole is formed in the second case.

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