CN110834513B - Air conditioner for vehicle and method of assembling the same - Google Patents

Air conditioner for vehicle and method of assembling the same Download PDF

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Publication number
CN110834513B
CN110834513B CN201910747271.6A CN201910747271A CN110834513B CN 110834513 B CN110834513 B CN 110834513B CN 201910747271 A CN201910747271 A CN 201910747271A CN 110834513 B CN110834513 B CN 110834513B
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China
Prior art keywords
electric heater
air conditioner
heater
air
heater core
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CN201910747271.6A
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Chinese (zh)
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CN110834513A (en
Inventor
李南濬
朴大根
金东均
金时亨
裵殷硕
徐晙豪
李镐
曹升祐
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Hanon Systems Corp
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Hanon Systems Corp
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Publication date
Priority claimed from KR1020180095534A external-priority patent/KR102536623B1/en
Priority claimed from KR1020180095542A external-priority patent/KR102545119B1/en
Application filed by Hanon Systems Corp filed Critical Hanon Systems Corp
Priority to CN202310621071.2A priority Critical patent/CN116409115A/en
Publication of CN110834513A publication Critical patent/CN110834513A/en
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Publication of CN110834513B publication Critical patent/CN110834513B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507Details, e.g. mounting arrangements, desaeration devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/02Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/034Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/02Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention provides an air conditioner for a vehicle and an assembling method thereof, wherein the shape of a PTC heater placing part is changed to guide the PTC heater to a normal position even when the PTC heater is separated or assembled wrongly. An air conditioning device for a vehicle includes: an air conditioner case; a heater core provided in the air conditioner case and heating air by a cooling water heat source; and an electric heater for heating air by heat generated by application of a power supply, wherein the heater core and the electric heater are combined in the air conditioner for a vehicle, and the air conditioner comprises: an insertion hole formed in the air conditioner case to insert the heater core and the electric heater; a coupling part for coupling the electric heater inserted into the air conditioner case; and a guide part formed on the air conditioner case for placing the coupling part, wherein the guide part protrudes a certain height in the coupling direction of the coupling part.

Description

Air conditioner for vehicle and method of assembling the same
Technical Field
The present invention relates to an air conditioning apparatus for a vehicle and an assembling method thereof, and more particularly, to an air conditioning apparatus for a vehicle and an assembling method thereof, in which a heater core for heating air by flow of engine cooling water and an electric heater for heating air by application of power supply are combined.
Background
In general, a vehicle air conditioning apparatus is an apparatus for heating or cooling air in a vehicle room while introducing air outside the vehicle into the vehicle room or circulating the air in the vehicle room to cool or heat the vehicle room. An air conditioner for a vehicle has an evaporator for cooling and a heater core for heating in an air conditioner case, and is configured to selectively feed air cooled or heated by the evaporator or the heater core to each part in a vehicle room using a door.
In addition to a Heater Core (Heater Core) using a cooling water heat source of an engine, a Heater such as a PTC Heater (Positive Temperature Cofficient Heater) which generates heat by application of a power supply is also used as a vehicle Heater. The PTC heater includes a heat source unit including a PTC element, a heat radiation unit which contacts the heat source unit and releases heat, a terminal unit, and a case surrounding and protecting the heat radiation unit and the terminal unit.
Fig. 1 is a sectional view showing an air conditioner for a vehicle having a conventional PTC heater. As shown in fig. 1, the air conditioner for a vehicle includes an air conditioner case 10 having an air inlet 11 formed on an inlet side and a plurality of air outlets formed on an outlet side, an evaporator 1 provided in the air conditioner case 10 to cool air, a heater core 2 in which cooling water flows to heat air, a PTC heater 3 to heat air by heat generation by application of power supply, and a plurality of doors.
The air outlet is composed of a defroster air port 12, a face air port 13, and a floor air port 14, the opening of which is adjusted by a mode door 30. A temperature control door 20 for adjusting the opening degrees of the cold air passage and the hot air passage is provided between the evaporator 1 and the heater core 2. The PTC heater 3 is provided downstream of the heater core 2 in the air flow direction, and functions as a heating source together with the heater core 2.
The PTC heater 3 heats unheated air passing through the heater core 2, and discharges warm air. The PTC heater 3 is separated from the heater core 2 by a predetermined interval, thereby increasing the number of steps of being individually assembled in the air conditioner case, occupying the space inside the air conditioner case, and thus reducing space utilization.
In order to solve such a problem, a combined PTC heater is disclosed in which a PTC heater is combined with a heater core, and thus is integrally assembled to an air conditioner case. In the combined PTC heater, the PTC heater is closely attached to the heater core, so that all wind passing through the heater core passes through the PTC heater, thereby increasing the heat efficiency and reducing the number of assembly steps.
When the conventional air conditioner for a vehicle including the combined PTC heater is assembled with the heater core and the PTC heater, a false assembly phenomenon in which the PTC heater is coupled to a position apart from the normal position frequently occurs, and there is a problem that the PTC heater is apart from the normal position due to an assembly flow, a movement between steps, and the like.
On the other hand, as a method for assembling an air conditioner for a vehicle provided with a conventional combined PTC heater, there are the following methods: first, the heater core 2 is inserted into the side hole of the air conditioner case 10, and then the PTC heater 3 is inserted into the side hole of the air conditioner case 10 so as to be closely adhered to the heater core 2, and then connected.
The vehicle air conditioner provided with the conventional combined PTC heater has the following problems: when the PTC heater 3 is assembled after the heater core 2 is assembled, not only a phenomenon occurs in which the sealing member surrounding the heater core 2 is pressed, but also thermal damage such as dissolution of the sealing member by the heat source of the PTC heater 3 occurs after the assembly is completed.
Disclosure of Invention
Problems to be solved by the invention
In order to solve such a conventional problem, the present invention provides an air conditioner for a vehicle, which can change the shape of a PTC heater placement portion so as to be guided to a normal position even when the PTC heater is detached or erroneously assembled.
In addition, the present invention provides an air conditioner for a vehicle and an assembling method thereof, wherein the sealing member of the heater core contacting the PTC heater is deleted, a separate sealing member is provided, and the position is optimized.
Means for solving the problems
An air conditioner for a vehicle according to the present invention includes: an air conditioner case; a heater core provided in the air conditioner case and configured to heat air by a cooling water heat source; and an electric heater that generates heat by application of a power supply to heat air, the heater core and the electric heater being combined in the air conditioning device for a vehicle, wherein the electric heater includes: an insertion hole formed in the air conditioner case and into which the heater core and the electric heater are inserted; a connection part for connecting the electric heater inserted into the air conditioner case; and a guide part formed on the air conditioner case for placing the coupling part, wherein the guide part protrudes a certain height in the coupling direction of the coupling part.
In the above, a slope is formed at an end of the guide portion, and the slope is inclined so that a width of the guide portion becomes gradually narrower in an insertion direction of the electric heater.
In the above, the electric heater may include a bracket having a first coupling hole formed therein, and a boss having a second coupling hole formed therein, the second coupling hole being formed in a surface of the air conditioner case adjacent to the insertion hole.
In the above, the guide portion is formed to surround at least a part of the circumference of the boss.
In the above, a cut-out portion is formed on at least one surface of the guide portion.
In the above, the heater core includes: a first upper water tank and a second upper water tank which are arranged side by side with a certain distance; a cooling water pipe provided in the first header tank or the second header tank, and configured to allow cooling water to flow in and out; a plurality of hoses, both ends of which are fixed to the first upper water tank and the second upper water tank, forming a cooling water flow path; a pin disposed between the hoses; and a pair of side plates supporting both sides of the assembly of the hose and the pin, the electric heater comprising: a terminal portion; a heat generating part which generates heat by a power supply applied to the terminal part; a plate-shaped support part for fixing the heat generating part so that heat generated from the heat generating part exchanges heat with air passing therethrough; and a housing that supports the support portion and one end portion of the heat generating portion.
In the above, a first sandwiching groove recessed in a width direction is formed at one side of the electric heater, and a bending protrusion protruding and bending in the width direction is formed at an end of the side plate to be inserted into the first sandwiching groove.
In the above, a sealing member that is pressed and sealed in the width direction is provided between the joining surfaces of the side plate and the electric heater.
In the above, a first protrusion is formed, the first protrusion protruding toward the side plate between the sealing member and the first sandwiching groove in the longitudinal direction, and the first protrusion is sandwiched between the sealing member and the curved protrusion, so that the sealing member seals in the width direction and the longitudinal direction in a state where the curved protrusion is inserted into the first sandwiching groove.
In the above, a second protrusion protruding in the width direction is formed on the other side of the electric heater, and a second sandwiching groove into which the second protrusion is inserted is formed in the air conditioner case, wherein the other side of the electric heater is the opposite side of the first sandwiching groove in the length direction.
In the above, the second protruding portion is formed between the heater core and the coupling portion in the length direction.
In the above, a plurality of hose ends and a support portion are provided on the opposite surfaces of the heater core and the electric heater, and the end surface of the support portion opposite to the heater core has a planar structure.
An air conditioner for a vehicle according to another aspect of the present invention includes: an air conditioner case; a heater core provided in the air conditioner case and configured to heat air by a cooling water heat source; and an electric heater that heats air by generating heat by application of a power supply, wherein the heater core and the electric heater are connected to the vehicle air conditioner, and the electric heater is provided with: a first sealing member which is adhered to a non-contact area between the electric heater and the heater core and seals between the heater core and the air conditioner case; and a second sealing member that is attached to a contact area between the electric heater and the heater core, and seals between the heater core and the electric heater.
In the above, the pressing directions of the first sealing member and the second sealing member are different from each other.
In the above, the first seal member is pressed in the longitudinal direction, and the second seal member is pressed in the width direction.
In the above, the first sealing member is formed on one side of the heater core with a certain width in the width direction, and extends so as to surround a part of the periphery of the heater core in a band shape.
In the above, the heater core includes: a first upper water tank and a second upper water tank which are arranged side by side with a certain distance; a plurality of hoses, both ends of which are fixed to the first upper water tank and the second upper water tank, forming a cooling water flow path; and a pair of side plates supporting both sides of the assembly of the hose, the electric heater comprising: a heat generating unit that generates heat by an applied power source; a plate-shaped support part for fixing the heating part so that heat generated by the heating part exchanges heat with air passing through the heating part; and a housing that supports the support portion and one end portion of the heat generating portion.
In the above, the first sealing member is formed on the entire periphery of the first header tank and the second header tank, and on one surface of the side plate and the hose in the longitudinal direction.
In the above, the second sealing member is formed with a certain width on one side in the width direction where the side of the electric heater contacts the heater core in the length direction, and extends in the height direction.
In the above, the second sealing member is formed on the inner side surface of the placement portion of the housing opposite to the side plate in the width direction.
In the above, a sandwiching groove recessed in a width direction is formed on one side of the electric heater, a curved protrusion protruding and curved in the width direction is formed at an end of the side plate to be inserted into the sandwiching groove, and the second sealing member is pressed and sealed in the width direction between the joining surfaces of the side plate and the electric heater.
In the above, a protruding portion is formed, which protrudes in the longitudinal direction toward the side plate between the second seal member and the sandwiching groove, and the protruding portion is sandwiched between the second seal member and the bending protrusion, so that the second seal member performs sealing in the width direction and the longitudinal direction in a state where the bending protrusion is inserted into the sandwiching groove.
In the above, a chute is formed in the first header tank or the second header tank to extend in a width direction, so that the support portion of the electric heater is inserted into the chute.
A method of assembling an air conditioner for a vehicle according to still another aspect of the present invention includes the steps of: inserting a heater core into a part of an insertion hole of an air conditioner case; inserting an electric heater into the rest of the insertion hole, and combining the heater core and the electric heater; and coupling the electric heater to the air conditioner case.
In the above, when the electric heater is inserted into the air conditioner case, the support portion to which the electric heater is coupled is inserted into the chute formed in the first or second upper water tank of the heater core, the curved protrusion formed at the end of the side plate of the heater core is inserted into the sandwiching groove recessed in the width direction in the electric heater, and the bracket formed in the electric heater is placed at the coupling portion formed in the air conditioner case, and screwed.
Effects of the invention
According to the air conditioner for a vehicle of the present invention, the guide portion is configured so that even when the electric heater is separated from the normal position during the movement between the assembly steps other than the assembly flow, the bracket is guided to the correct position by the guide portion, and the problem of quality degradation due to the assembly error can be improved. In addition, the structure for fixing the electric heater is provided, automatic assembly can be realized, production cost can be reduced, and heat source damage and leakage noise of the electric heater caused by assembly errors can be prevented.
And, the first sealing member and the second sealing member are separately constructed and the positions thereof are optimized, thereby maximizing sealing performance while minimizing the number of sealing members, and in the coupling structure between the heater core and the electric heater, the sealing members prevent interference, so that deformation of the sealing members can be fundamentally prevented.
Further, the sealing member located at the contact portion between the heater core and the electric heater is prevented from being thermally damaged by the heat source of the electric heater, and the sealing member is prevented from being pushed when the electric heater is assembled, so that the assembling property and quality can be improved, and the cost can be reduced by deleting a part of the sealing member.
Drawings
Fig. 1 is a sectional view showing an air conditioner for a vehicle having a conventional PTC heater.
Fig. 2 is a sectional view showing an air conditioner for a vehicle according to an embodiment of the present invention.
Fig. 3 is a perspective view showing a state in which an assembly of a heater core and an air conditioner for a vehicle according to an embodiment of the present invention is disassembled.
Fig. 4 is a disassembled perspective view of a heater core and an electric heater according to an embodiment of the present invention.
Fig. 5 is a partial perspective view illustrating an air conditioner case incorporating an assembly of a heater core and an electric heater according to an embodiment of the present invention.
Fig. 6 is a sectional view taken along line A-A of fig. 5.
Fig. 7 is a sectional view showing the B portion of fig. 6 in an enlarged manner.
Fig. 8 is a perspective view illustrating an electric heater according to an embodiment of the present invention.
Fig. 9 is a perspective view illustrating a guide part of an air conditioner case according to an embodiment of the present invention.
Fig. 10 is a sectional view taken along line C-C of fig. 9.
Fig. 11 is a cross-sectional view showing an air conditioner for a vehicle according to another embodiment of the present invention.
Fig. 12 is a perspective view showing a disassembled state of an assembly of an air conditioner for a vehicle and a heater core and an electric heater according to another embodiment of the present invention.
Fig. 13 is a disassembled perspective view of a heater core and an electric heater according to another embodiment of the present invention.
Fig. 14 is a side view showing a heater core according to another embodiment of the present invention.
Fig. 15 is a cross-sectional view taken along line A-A of fig. 12.
Fig. 16 is a partial perspective view illustrating an air conditioner case incorporating an assembly of a heater core and an electric heater according to another embodiment of the present invention.
Fig. 17 is a sectional view taken along line B-B of fig. 12.
Fig. 18 is a sectional view showing the C portion of fig. 17 in an enlarged manner.
Fig. 19 is a perspective view illustrating an electric heater according to another embodiment of the present invention.
Marking:
100: air conditioner case 110: evaporator
111: air inflow port 112: defrosting air port
113: face blowing tuyere 114: floor air port
115: mode gate 116: temperature control door
120: heater core 121: cooling water pipe
124: bending protrusion 125: first upper water tank
126: second header tank 128: pin
130: an electric heater 131: support part
132: terminal portion 133: a first protruding part
134: support 135: first coupling hole
136: second protrusion 137: first clamping groove
106: second clamping groove 138: heating part
139: the housing 140: sealing member
150: first sealing member 160: second sealing member
Detailed Description
Technical configurations of the air conditioner for a vehicle will be described in detail with reference to the drawings.
In the following description, the width direction of fig. 3 is the vehicle left-right direction. The width direction is the same direction as the coupling direction of the coupling portion, and is the same direction as the insertion direction of the electric heater. The longitudinal direction in fig. 3 is the vehicle longitudinal direction, and the height direction is the vehicle vertical direction. In the following description, the width direction, the length direction, and the height direction are arbitrarily specified for convenience of description, and are not limited to these directions.
As shown in fig. 2 to 10, the air conditioner for a vehicle according to an embodiment of the present invention includes an air conditioner case 100 having an air inlet 111 formed at an inlet side and a plurality of air discharge ports formed at an outlet side, an evaporator 110 provided inside the air conditioner case 100 to cool air, a heater core 120 in which cooling water flows to heat air, an electric heater 130 to heat air by application of heat of a power supply, and a plurality of doors.
The air outlet is composed of a defroster air port 112, a face air port 113, and a floor air port 114, the opening of which is adjusted by a mode door 115. A temperature control door 116 for adjusting the opening degrees of the cold air passage and the hot air passage is provided between the evaporator 110 and the heater core 120. The electric heater 130 is disposed downstream of the heater core 120 in the air flow direction, and functions as a heating source together with the heater core 120.
The heater core 120 is provided inside the air conditioner case 100, and heats air by a cooling water heat source. The heater core 120 includes a first header tank 125 and a second header tank 126, a cooling water pipe 121, a hose 123, a pin 128, and a side plate 122.
The first and second header tanks 125 and 126 are juxtaposed at a distance in the height direction. One of the first header tank 125 and the second header tank 126 includes a cooling water pipe 121 through which cooling water flows, and the other includes a cooling water pipe 121 through which cooling water is discharged.
The hose 123 is a member having both ends fixed to the first header tank 125 and the second header tank 126 to form a cooling water flow path, and a plurality of hoses are arranged in parallel in the width direction. The pins 128 are provided between the plurality of hoses 123 to exchange heat with air passing through the hoses 123, thereby improving heat exchange performance. The side plates 122 are formed as a pair, and support both sides of the assembly of the hose 123 and the pin 128.
The electric heater 130 is provided inside the air conditioner case 100, and heats air by heat generated by application of power. The electric heater 130 may be constituted by a PTC heater (Positive Temperature Cofficient Heater). The electric heater 130 includes a terminal portion 132, a heat generating portion 138, a support portion 131, and a housing 139.
The terminal portion 132 is a member for receiving power, and a plurality of heat generating portions 138 are arranged at intervals in the height direction, and generate heat by the power applied to the terminal portion 132. The heat generating portion 138 includes an electrode and may be constituted by a heat generating hose using a PTC element. The support portion 131 is configured in a plate shape for fixing the heat generating portion 138 such that heat generated in the heat generating portion 138 exchanges heat with air passing through the heat generating portion 138. The housing 139 supports one end of the supporting portion 131 and the heat generating portion 138.
The heater core 120 and the electric heater 130 are integrated and inserted into the air conditioner case 100. An insertion hole 119 for inserting the assembly of the heater core 120 and the electric heater 130 is formed in the air conditioner case 100. The heater core 120 and the electric heater 130 may be integrally inserted into the air conditioner case 100 after being assembled, but the assembly may be completed by inserting the heater core 120 into the air conditioner case 100 and then inserting the electric heater 130 into the air conditioner case 100 and coupling the electric heater 130 to the air conditioner case 100. The electric heater 130 may be slidably inserted into the upper water tanks 125, 126 of the heater core 120.
The vehicle air conditioner further includes a coupling portion. The coupling portion couples the electric heater 130 inserted into the air conditioner case 100. The coupling portion may be implemented by a bracket 134 formed at the electric heater 130.
That is, the bracket 134 is provided on one side of the electric heater 130, and the bracket 134 is formed with a first coupling hole 135. The brackets 134 are formed in plurality at intervals in the height direction, and in this embodiment, form a pair. The bracket 134 is formed at one side of the housing 139 in the length direction, and is formed extending in the length direction at an end of the housing 139. The bracket 134 is formed on opposite sides of the side coupled with the heater core 120 among both sides of the housing 139 in the length direction. The first coupling hole 135 is formed therethrough in the width direction.
A boss 101 is provided on one surface of the air conditioner case 100 adjacent to the insertion hole 119. A second coupling hole 102 is formed at a position of the boss 101 corresponding to the first coupling hole 135. The boss 101 protrudes in the width direction on the air conditioner case 100. Screws are passed through the first coupling holes 135 and the second coupling holes 102, and the brackets 134 are closely attached to the bosses 101, so that the assembly of the heater core 120 and the electric heater 130 is coupled to the air conditioner case 100.
The air conditioner case 100 is provided with a guide 103. The guide 103 is formed on one surface of the air conditioner case 100 formed with the boss 101 for receiving the coupling portion. That is, the guide 103 serves to guide the bracket 134 of the electric heater 130 to be placed. The guide portion is formed to protrude by a certain height in the coupling direction of the coupling portion, that is, in the width direction. The guide 103 is formed to surround at least a part of the circumference of the boss 101.
The guide 103 protrudes in the width direction so as to be higher than the protruding length of the boss 101. Preferably, the guide 103 is formed in a wall-like projection on three sides in the periphery of the boss 101 so as to surround the entire periphery of the boss 101.
In the assembly process in which the electric heater 130, i.e., the assembly of the heater core and the electric heater, is slidably inserted into the insertion hole 119 of the air conditioner case 100, the guide 103 functions to guide to a normal position when the bracket 134 is detached from the placement portion of the air conditioner case or is erroneously assembled.
Also, with the guide 103, even in the case where the electric heater is detached from the normal position at the time of movement between assembly processes other than assembly flow, the bracket 134 is still guided to the normal position by the guide 103 when the bracket 134 and the boss 101 are coupled with the screw, so that quality problems caused by erroneous assembly can be improved. Also, a structure for fixing the electric heater 130 is provided, so that automatic assembly can be realized, production costs can be reduced, and heat source loss and leakage noise of the electric heater due to erroneous assembly can be prevented.
A slope 104 is formed at an end of the guide 103. The inclined surface 104 is formed so that the width of the guide 103 gradually narrows in the insertion direction of the electric heater 130, that is, in the width direction. The inclined surface 104 may be formed by cutting the end corner of the guide 103 obliquely. When the electric heater 130 is coupled, the inclined surface 104 guides the bracket 134 to the normal position of the boss 101 more smoothly, and the normal assembly guiding effect can be further improved.
A cutout 105 may be formed on at least one surface of the guide 103. The cutout 105 is recessed inward in the width direction. The cutout 105 may be formed in the middle of the three faces. The cutout 105 functions to prevent interference with an assembly Tool (Tool) for rotating the screw. The cutout 105 is formed to have a suitable size within a range that can sufficiently perform the coupling portion guiding function of the guide 103.
A first sandwiching groove 137 is formed at one side of the electric heater 130. The first sandwiching groove 137 is formed recessed in the width direction inside the frame of the housing 139 of the electric heater 130. Further, a curved protrusion 124 is formed at an end of the side plate 122. The curved protrusion 124 is formed protruding and curved in the width direction at the side plate 122 to be inserted into the first sandwiching groove 137.
In this way, the first sandwiching groove 137 and the curved protrusion 124 are configured to be engaged, and the heater core 120 and the electric heater 130 are restricted from each other in the longitudinal direction, and a function of guiding the electric heater 130 to the normal position of the air conditioner case 100 is performed at the time of assembly.
A sealing member 140 is provided between the junction surface of the side plate 122 and the electric heater 130. The sealing member 140 is positioned between the side plate 122 and the housing 139 of the electric heater 130, is pressed in the width direction, and seals. When the bracket 134 and the boss 101 of the air conditioner case 100 are coupled by the screw, the electric heater 130 is pressed against the side plate 122 of the heater core 120, so that the sealing member 140 is pressed and deformed in the arrow direction of fig. 7.
By the constitution of the sealing member 140, the assembly of the heater core 120 and the electric heater 130 is pressed at the time of coupling of the air conditioner case 100, thereby sealing the gap between the heater core 120 and the electric heater 130, the gap between the heater core 120 and the air conditioner case 100, and the gap between the electric heater 130 and the air conditioner case 100, and minimizing air leakage and leakage noise.
Further, a first protruding portion 133 is formed between the sealing member 140 and the first sandwiching groove 137 in the longitudinal direction. The first protrusion 133 protrudes from the inner side surface of the housing 139 of the electric heater 130 toward the side plate 122. The first protrusion 133 is interposed between the sealing member 140 and the curved protrusion 124, so that the sealing member 140 performs sealing in the width direction and the length direction in a state where the curved protrusion 124 is inserted into the first sandwiching groove 137.
By the engagement structure and the sealing structure of the sealing member 140, the first protrusion 133, the first sandwiching groove 137, and the curved protrusion 124, the coupling force between the heater core 120, the electric heater 130, and the air conditioner case 100 can be improved, and the sealability can be further improved. Further, the position of the sealing member 140 is disposed at a position adjacent to the engagement structure of the first projection 133, the first sandwiching groove 137, and the curved protrusion 124, so that the number of sealing members can be minimized and efficient sealing can be performed.
On the other hand, there is a great advantage in that the sealing member 140 is provided to the electric heater 130. That is, in the heater core 120, in order to maintain sealing in a state of being inserted into the air conditioner case 100, the individual sealing members surround the entire hose 123 including the upper tanks 125 and 126, and when the electric heater 130 is bonded to the heater core 120 in a close contact manner, as an example, the sealing members wound around the heater core 120 may be separated or damaged during sliding insertion.
The sealing member 140 is provided to the electric heater 130, and when the electric heater 130 is coupled, the sealing member 140 is pressed in the coupling direction, and the sealing member is not formed at the portion of the heater core 120 that is in close contact with the electric heater 130, but is provided only at the portion that is not in close contact with the electric heater 130, so that the air conditioner case 100 is sealed, and the sealing member 140 is sealed between the electric heater 130 and the heater core 120, whereby damage to the sealing member can be prevented.
Further, a second protrusion 136 is formed on the opposite side of the first sandwiching groove 137, i.e., the other side of the electric heater 130 in the longitudinal direction. The second protrusion 136 is formed protruding in the width direction on the inner frame of the electric heater 130. In the air conditioner case 100, the second sandwiching grooves 106 for inserting the second protruding portions 136 are formed at corresponding positions. In this case, the second protrusion 136 is formed between the heater core 120 and the coupling portion in the length direction.
When the bracket 134 and the boss 101 are coupled by the screw after the assembly of the heater core 120 and the electric heater 130 is temporarily fixed in a state of being inserted into the air conditioner case 100, the second protrusion 136 and the second sandwiching groove 106 position the bracket 134 at a normal position, and the assembly of the heater core 120 and the electric heater 130 is restricted to the air conditioner case 100 in a length direction, thereby further improving coupling force.
On the other hand, end portions of the plurality of hoses 123 and the supporting portion 131 are provided on opposite surfaces of the heater core 120 and the electric heater 130. The end surface of the support portion 131 facing the heater core 120 is configured in a planar structure. Accordingly, the pin 128 of the heater core 120 disposed between the hoses 123 when the electric heater 130 is coupled can be prevented from being damaged.
On the other hand, as shown in fig. 11 to 19, the air conditioner for a vehicle according to another embodiment of the present invention includes an air conditioner case 100 having an air inlet 111 formed at an inlet side and a plurality of air discharge ports formed at an outlet side, an evaporator 110 provided inside the air conditioner case 100 to cool air, a heater core 120 in which cooling water flows to heat air, an electric heater 130 to heat air by application of heat of a power source, and a plurality of doors.
The air outlet is composed of a defroster air port 112, a face air port 113, and a floor air port 114, the opening of which is adjusted by a mode door 115. A temperature control door 116 for adjusting the opening degrees of the cool air passage and the hot air passage is provided between the evaporator 110 and the heater core 120. The electric heater 130 is disposed downstream of the heater core 120 in the air flow direction, and functions as a heating source together with the heater core 120.
The heater core 120 is provided inside the air conditioner case 100, and heats air by a cooling water heat source. The heater core 120 includes a first header tank 125 and a second header tank 126, a cooling water pipe 121, a hose 123, a pin 128, and a side plate 122.
The first and second header tanks 125 and 126 are juxtaposed at a distance in the height direction. One of the first header tank 125 and the second header tank 126 includes a cooling water pipe 121 through which cooling water flows, and the other includes a cooling water pipe 121 through which cooling water is discharged.
The hose 123 is a member having both ends fixed to the first header tank 125 and the second header tank 126 to form a cooling water flow path, and a plurality of hoses are arranged in parallel in the width direction. The pins 128 are provided between the plurality of hoses 123 to exchange heat with air passing through the hoses 123, thereby improving heat exchange performance. The side plates 122 are formed as a pair, and support both sides of the assembly of the hose 123 and the pin 128.
The electric heater 130 is provided inside the air conditioner case 100, and heats air by heat generated by application of power. The electric heater 130 may be constituted by a PTC heater (Positive Temperature Cofficient Heater). The electric heater 130 includes a terminal portion 132, a heat generating portion 138, a support portion 131, and a housing 139.
The terminal portion 132 is a member for receiving power, and a plurality of heat generating portions 138 are arranged at intervals in the height direction, and generate heat by the power applied to the terminal portion 132. The heat generating portion 138 includes an electrode and may be constituted by a heat generating hose using a PTC element. The support portion 131 is configured in a plate shape for fixing the heat generating portion 138 such that heat generated in the heat generating portion 138 exchanges heat with air passing through the heat generating portion 138. The housing 139 supports one end of the supporting portion 131 and the heat generating portion 138.
The heater core 120 and the electric heater 130 are integrated and inserted into the air conditioner case 100. The air conditioner case 100 is formed with an insertion hole 119 for inserting the heater core 120 and the assembly of the electric heater 130. The heater core 120 and the electric heater 130 may be integrally inserted and assembled to the air conditioner case 100 after being assembled, but in another embodiment of the present invention, the heater core 120 is inserted to the air conditioner case 100 before the electric heater 130 is inserted to the air conditioner case 100, and the electric heater 130 is coupled to the air conditioner case 100, thereby completing the assembly.
A chute 129 is formed to extend in the width direction on the first and second header tanks 125 and 126. The sliding groove 129 is formed to be recessed inward on one surface of the first and second upper water tanks 125 and 126 opposite to each other, so that the electric heater 130 is insert-coupled. The support portion 131 of the electric heater 130 is slidably inserted to be coupled to the chute 129.
The vehicle air conditioner includes a first seal member 150 and a second seal member 160. The first sealing member 150 is attached to a non-contact area between the electric heater 130 and the heater core 120, and seals between the heater core 120 and the air conditioner case 100. The second sealing member 160 is stuck to a contact area between the electric heater 130 and the heater core 120, and seals between the heater core 120 and the electric heater 130.
In addition, the second sealing member 160 achieves sealing between the electric heater 130 and the air conditioner case 100. In this way, the first sealing member 150 and the second sealing member 160 respectively achieve sealing between the heater core 120 and the air conditioner case 100, between the heater core 120 and the electric heater 130, and between the electric heater 130 and the air conditioner case 100, so that gaps between the assembly of the heater core 120 and the electric heater 130 and the air conditioner case 100 can be completely filled.
By the constitution of the second sealing member 160, the partial sealing member shown by the broken line in fig. 17 may be deleted from the conventional structure surrounding the entire periphery of the heater core 120, and the function thereof may be replaced by the second sealing member 160.
The sealing performance can be improved when the rubber material member for sealing is sufficiently provided between the respective components, but the number of components cannot be increased blindly from the viewpoint of cost and the number of assembly steps and the joining structure between the respective components. As in the present embodiment, the first sealing member 150 and the second sealing member 160 are separately provided, and the positions thereof are optimized so that the number of sealing members is minimized in the case of maximizing sealing performance, and in the coupling structure between the heater core 120 and the electric heater 130, the sealing members prevent interference, thereby fundamentally preventing deformation of the sealing members.
In particular, as described in the related art, it is possible to prevent the sealing member located at the contact portion of the heater core 120 and the electric heater 130 from being thermally damaged due to the influence of the heat source of the electric heater 130, and to prevent the sealing member from being pushed when the electric heater 130 is assembled, so that the assemblability and quality can be improved, and the cost can be reduced by deleting a part of the sealing member.
The pressing directions of the first and second sealing members 150 and 160 are different from each other. That is, the first sealing member 150 is pressed in the length direction, and the second sealing member 160 is pressed in the width direction. With this configuration, the first seal member 150 and the second seal member 160 perform sealing in different directions, respectively, and thus effective sealing can be achieved.
The first sealing member 150 is formed at a certain width at one side of the heater core 120 in the width direction. The first sealing member 150 extends in a band shape to surround a part of the circumference of the heater core 120. That is, the first sealing member 150 is formed in the entirety of the non-contact region except for the contact region between the heater core 120 and the electric heater 130. More preferably, the first sealing member 150 is formed on one surface of the hose 123 and the side plate 122 in the longitudinal direction and the entire circumference of the first and second header tanks 125 and 126.
The second sealing member 160 is formed at a certain width on one side of the electric heater 130 in the length direction and is formed at one side in the width direction contacting the heater core 120. The second sealing member 160 is formed to extend long in the height direction. That is, the second sealing member 160 is formed across the entire non-contact area between the heater core 120 and the electric heater 130. More preferably, the second sealing member 160 is formed on the inner side surface of the placement portion of the housing 139 opposite to the side plate 122 in the width direction.
The first sealing member 150 is formed of a relatively thin band-shaped (Belt) member having a predetermined width, and the second sealing member 160 is formed of a quadrangular Bar-shaped (Bar) member having a predetermined width. The first seal member 150 surrounds the entire upper tank, and surrounds the entire one of the two longitudinal surfaces of the side plate 122 and the hose 123. In this case, the first sealing member 150 is formed on the side plate 122 on the inlet side of the insertion hole 119 of the air conditioner case 100 in the pair of plates 122. Preferably, the first sealing member 150 is formed to surround the side plate 122 and the at least one hose 123 in the width direction.
A bracket 134 is provided at one side of the electric heater 130, and a coupling hole is formed at the bracket 134. The brackets 134 are formed in a pair spaced apart in the height direction, are formed on one side of the housing 139 in the longitudinal direction, and extend in the longitudinal direction from the end of the housing 139. The bracket 134 is formed on opposite sides of the side coupled with the heater core 120 among both sides of the housing 139 in the length direction.
A boss, which is a placement portion of the bracket 134, is provided on one surface of the air conditioner case 100 adjacent to the insertion hole 119. Coupling holes corresponding to the coupling holes formed in the bracket 134 are formed in the boss. The bracket 134 and the boss are coupled by screws so that the heater core 120 and the assembly of the electric heater 130 are coupled to the air conditioner case 100.
A sandwiching groove 137 is formed at one side of the electric heater 130. The sandwiching groove 137 is formed recessed in the width direction inside the frame of the housing 139 of the electric heater 130. Further, a curved protrusion 124 is formed at an end of the side plate 122. The curved protrusion 124 is formed protruding and curved from the side plate 122 in the width direction to be inserted into the sandwiching groove 137.
In this way, the sandwiching groove 137 and the curved protrusion 124 are configured to be engaged with each other, and the heater core 120 and the electric heater 130 are restricted from each other in the longitudinal direction, and function to guide the electric heater 130 to the normal position of the air conditioner case 100 when assembled. The second sealing member 160 is pressed in the width direction between the coupling surfaces of the side plate 122 and the electric heater 130 to seal.
When the second sealing member 160 is coupled to the bracket 134 and the placement portion of the air conditioner case 100 by the screw, the electric heater 130 is pressed against the side plate 122 of the heater core 120, and the second sealing member 160 is deformed by pressing in the arrow direction of fig. 18.
With such a configuration, the assembly of the heater core 120 and the electric heater 130 is pressed when coupled to the air conditioner case 100, thereby sealing the gap between the heater core 120 and the electric heater 130, the gap between the heater core 120 and the air conditioner case 100, and the gap between the electric heater 130 and the air conditioner case 100, thereby minimizing leakage air and leakage noise.
Further, a protruding portion 133 is formed between the second seal member 160 and the sandwiching groove 137 in the longitudinal direction. The protruding portion 133 protrudes toward the side plate 122 inside the housing 139 of the electric heater 130. The protruding portion 133 is interposed between the second sealing member 160 and the curved protrusion 124, so that the second sealing member 160 performs sealing in the width direction and the length direction in a state where the curved protrusion 124 is inserted into the sandwiching groove 137.
By such a snap structure and a sealing structure of the second sealing member 160, the protrusion 133, the sandwiching groove 137, and the curved protrusion 124, the coupling force between the heater core 120, the electric heater 130, and the air conditioner case 100 can be improved, and the sealability can be further improved. Further, the second sealing member 160 is disposed at a position adjacent to the engagement structure of the protruding portion 133, the sandwiching groove 137, and the curved protrusion 124, so that the number of sealing members can be minimized and efficient sealing can be performed.
Next, a method of assembling an air conditioner for a vehicle according to another embodiment of the present invention will be described.
First, the heater core 120 is inserted into a part of the insertion hole 119 of the air conditioner case 100. After that, the electric heater 130 is inserted into the remaining portion of the insertion hole 119, thereby combining the heater core 120 and the electric heater 130. In this case, when the electric heater 130 is inserted into the air conditioner case 100, the support portion 131 to which the electric heater 130 is coupled is slidably inserted into the slide groove 129 formed in the first and second header tanks 125 and 126 of the heater core 120.
Further, the curved protrusion 124 formed at the end of the side plate 122 of the heater core 120 is inserted into the sandwiching groove 137 of the electric heater 130 recessed in the width direction. In this way, the state in which the assembly of the heater core 120 and the electric heater 130 is inserted into the air conditioner case 100 is a pre-assembled state, and the assembly of the heater core 120 and the electric heater 130 is limited in the longitudinal direction with respect to the air conditioner case 100 but is not limited in the width direction.
Finally, a step of coupling the electric heater 130 to the air conditioner case 100 is performed. That is, the bracket 134 formed in the electric heater 130 is placed in the coupling portion placement portion formed in the air conditioner case 100, and is coupled by the screw, thereby ending a series of assembly processes.
While the air conditioning apparatus for a vehicle according to the present invention has been described above with reference to the embodiments shown in the drawings, these are only examples, and it should be understood that various modifications and other embodiments equivalent thereto will be apparent to those skilled in the art. Therefore, the true scope of protection should be defined based on the technical ideas of the claims.

Claims (17)

1. An air conditioning device for a vehicle, comprising: an air conditioner case; a heater core provided in the air conditioner case, for heating air by a cooling water heat source; and an electric heater for heating air by heating the air by application of a power supply, wherein the heater core and the electric heater are combined in the air conditioner for a vehicle,
the air conditioning device for a vehicle includes:
an insertion hole formed in the air conditioner case, into which the heater core and the electric heater are inserted;
a connection part for connecting the electric heater inserted into the air conditioner case; and
a guiding part formed on the air conditioner case for placing the connecting part,
wherein the guide part is formed by protruding a certain height in the connection direction of the connection part,
a slope surface is formed at an end of the guide part, the slope surface is inclined in such a way that the width of the guide part is gradually narrowed in the insertion direction of the electric heater, the slope surface guides the electric heater to a normal position when the electric heater is coupled to the air conditioner case,
The heater core includes: a first upper water tank and a second upper water tank which are arranged side by side with a certain distance; a cooling water pipe provided in the first or second water tank to allow cooling water to flow in and out; a plurality of hoses, both ends of which are fixed to the first upper water tank and the second upper water tank, forming a cooling water flow path; a pin disposed between the hoses; and a pair of side plates which support both sides of the hose and pin assembly,
the electric heater includes: a terminal portion; a heat generating part which generates heat by a power supply applied to the terminal part; a plate-shaped support part for fixing the heat generating part so that heat generated from the heat generating part exchanges heat with air passing through the heat generating part; and a housing for supporting the support portion and one end of the heat generating portion,
a second sealing component which is pressed in the width direction to seal is arranged between the combining surface of the side plate and the electric heater,
the second sealing member is formed on the inner side surface of the housing opposite to the side plate in the width direction,
the second sealing member is pressed in the width direction between the joint surfaces of the side plate and the electric heater to seal.
2. The vehicular air-conditioning apparatus according to claim 1, wherein,
the electric heater includes a bracket with a first coupling hole,
a boss having a second coupling hole corresponding to the first coupling hole is provided on one surface of the air conditioner case adjacent to the insertion hole.
3. The vehicular air-conditioning apparatus according to claim 2, wherein,
the guide portion is formed to surround at least a part of the periphery of the boss.
4. The vehicular air-conditioning apparatus according to claim 1, wherein,
a cut-out portion is formed on at least one surface of the guide portion.
5. The vehicular air-conditioning apparatus according to claim 1, wherein,
a first clamping groove which is formed by sinking in the width direction is formed on one side of the electric heater,
a curved protrusion protruding and curved in the width direction is formed at an end of the side plate to be inserted into the first sandwiching groove.
6. The air conditioner for a vehicle according to claim 5, wherein,
in the longitudinal direction, a first protrusion protruding toward the side plate is formed between the sealing member and the first sandwiching groove, and the first protrusion is inserted between the sealing member and the curved protrusion, so that the sealing member seals in the width direction and the longitudinal direction in a state where the curved protrusion is inserted into the first sandwiching groove.
7. The air conditioner for a vehicle according to claim 5, wherein,
in the length direction, a second protruding part protruding along the width direction is formed on the other side of the electric heater which is the opposite side of the first clamping groove, and a second clamping groove which is inserted into the second protruding part is formed on the air conditioner case.
8. The vehicular air-conditioning apparatus according to claim 7, wherein,
the second protruding portion is formed between the heater core and the coupling portion in the longitudinal direction.
9. The vehicular air-conditioning apparatus according to claim 1, wherein,
a plurality of hose ends and a support portion are provided on opposite sides of the heater core and the electric heater, and an end surface of the support portion opposite to the heater core is a planar structure.
10. The vehicular air-conditioning apparatus according to claim 1, wherein,
the vehicle air conditioner further includes:
and a first sealing member adhered to a non-contact area between the electric heater and the heater core to seal the heater core and the air conditioner case.
11. The vehicular air-conditioning apparatus according to claim 10, wherein,
the pressing directions of the first sealing member and the second sealing member are different from each other.
12. The vehicular air-conditioning apparatus according to claim 11, wherein,
the first seal member is pressed in the longitudinal direction.
13. The vehicular air-conditioning apparatus according to claim 10, wherein,
the first sealing member is formed on one side of the heater core with a constant width in the width direction, and extends so as to surround a part of the periphery of the heater core in a band shape.
14. The vehicular air-conditioning apparatus according to claim 10, wherein,
the first sealing member is formed on the whole periphery of the first upper water tank and the second upper water tank, and on one side of the side plate and the hose in the length direction.
15. The vehicular air-conditioning apparatus according to claim 10, wherein,
the second sealing member is formed at a width in a longitudinal direction on one side of the electric heater in a width direction contacting the heater core, and extends in a height direction.
16. The vehicular air-conditioning apparatus according to claim 14, wherein,
the first or second header tank may be extended in a width direction to form a chute, so that the support portion of the electric heater may be inserted into the chute.
17. A method of assembling the air conditioner for a vehicle according to any one of claims 1 to 16, comprising the steps of:
Inserting a heater core into a part of an insertion hole of an air conditioner case;
inserting an electric heater into the remaining part of the insertion hole, and inserting a supporting part combined with the electric heater into a chute formed in the first upper water tank or the second upper water tank of the heater core, thereby combining the heater core and the electric heater; and
and placing a bracket formed on the electric heater at a connecting part formed on the air conditioner case to carry out screwing.
CN201910747271.6A 2018-08-16 2019-08-14 Air conditioner for vehicle and method of assembling the same Active CN110834513B (en)

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KR1020180095542A KR102545119B1 (en) 2018-08-16 2018-08-16 Air conditioner for vehicle

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JPH0752637A (en) * 1993-08-16 1995-02-28 Nippondenso Co Ltd Air conditioner
JP4078180B2 (en) * 2002-10-15 2008-04-23 カルソニックカンセイ株式会社 Air conditioner for vehicles
JP2012096779A (en) * 2010-10-07 2012-05-24 Mitsubishi Heavy Ind Ltd Heat-medium heating device and vehicle air conditioning device provided with the same
JP5565321B2 (en) * 2011-01-07 2014-08-06 株式会社デンソー Air conditioner for vehicles
US9333835B2 (en) * 2012-07-09 2016-05-10 Hanon Systems Heater for vehicles
JP6211293B2 (en) * 2013-04-24 2017-10-11 株式会社ケーヒン Air conditioner for vehicles
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