JP2004161142A - Air conditioner for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate assembly of a baffle plate provided to a location where a cold air passage and a heating passage come into one in an air conditioner for an automobile. <P>SOLUTION: The heating passage in which a heater core is arranged and the cold air passage are formed in an air conditioning case, and the baffle plate expediting mixture of cold air with hot air is provided to the location where the heating passage and the cold air passage come into one.One side of the baffle plate is inserted in a mounting groove formed on the air conditioning case and the other side is mounted to hold a heater core holding part formed in the air conditioning case in-between. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automotive air conditioner provided with a baffle plate for promoting mixing of cold air and hot air.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an automotive air conditioner obtains a required blowing temperature by reheating all or part of cold air to generate hot air and mixing the hot air with cold air. There is disclosed an example in which a multi-layered ventilation path 6 that alternately flows in a multi-layered form is provided for the purpose of promoting mixing of hot air and cold air (Patent Document 1). Further, an example in which an air mixing chamber 10 having a similar structure is provided for the same purpose is shown (Patent Document 2).
[0003]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-88532 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-59726 [0004]
[Problems to be solved by the invention]
However, in Patent Documents 1 and 2, although the multilayer ventilation path 6 and the air mixing chamber 10 are shown, the figure is a schematic view, and the air flow path in the automotive air conditioner in a commercial vehicle is shown. It is not shown as a structure to be incorporated into the. In a commercial vehicle air conditioner, a cold air passage and a heating passage in which a heater core is arranged constitute one mixing passage in a downstream area, and a vehicle is appropriately provided in accordance with a blowing mode from each outlet provided at a terminal end. A means (baffle plate) for facilitating the mixing of cold air and hot air is incorporated at a portion where the cold air passage and the heating air passage are united, which is blown into the room. We have to think about it in terms of method and assembly. In view of the above, the present invention provides a structure for facilitating assembly in an air-conditioning case when assembling a baffle plate that promotes mixing by flowing cold air and hot air in a multilayer shape.
[0005]
[Means for Solving the Problems]
In order to solve this problem, an air conditioner for an automobile according to the present invention forms a heating passage having a heater core and a cool air passage in an air conditioning case in an air conditioning case, and supplies cold air to the heating passage and the cool air passage. An automotive air conditioner having a mix door for changing an amount ratio, and a baffle plate for promoting mixing of cold air and hot air is provided at a portion where the heating passage and the cold air passage become one, wherein the baffle plate is one side. In this case, the heater is inserted into a mounting groove formed in the air-conditioning case, and on the other hand, the heater-holding portion formed in the air-conditioning case is sandwiched and mounted (claim 1).
[0006]
As a result, the baffle plate for promoting the mixing of the cool air and the warm air is sandwiched between the cool air passage and the warm air passage in the air conditioning case, one of which is in the mounting groove and the other of which is in the heater core holding portion. For mounting, it can be mounted by sliding without using screws or the like. This is effective in facilitating the assemblability since the division surface of the heater case is formed in the vertical direction.
[0007]
The baffle plate is provided with an insertion piece for insertion into the mounting groove on one side and a holding section for holding the heater holding section on the other side (claim 2). Thus, the mounting means for mounting to the heater case may be the insertion piece and the holding portion, and the manufacture thereof is easy.
[0008]
The baffle plate is composed of a number of guide grooves and a combination of guide holes, and is provided with a horizontal bar connecting between the guide grooves and a number of projecting pieces forming the guide holes (claim 3). Thereby, the strength can be increased by connecting a large number of projecting pieces that are weak in strength.
[0009]
In addition, each outlet for each mode is provided at the end of the mixing passage that becomes one downstream of the cold air passage and the heating passage, and a net is disposed at one defrost outlet of each outlet, and a net is disposed on the net. (Claim 4). This has the advantage that the mesh makes the blown air impinging on the windscreen surface contradictory.
[0010]
The mesh has a shape that is slightly larger than the shape of the opening of the defrost outlet, and the mesh has a plurality of protruding pieces extending outward from the outer peripheral end thereof. As a result, it is possible to temporarily fix the defrosting outlet of the net before attaching the lining to the defrosting outlet, and to reliably cover the defrosting outlet.
[0011]
The upper and lower members of the air conditioning case that define the mixing passage are supported by metal rods. This allows the metal rod to be supported by the metal rod to increase the strength, and the metal rod to be supported is in the mixing passage, and is made thinner by metal, so that the ventilation resistance can be reduced as compared with the case where the resin is manufactured with resin.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
In the drawing, an automotive air conditioner 1 roughly includes an intake unit 4 for selectively introducing outside air from the outside air inlet 2 or vehicle interior air from an inside air inlet 3, and a blower for housing a blower 5 and an evaporator 6. And an air conditioning unit 10 having a heater core 8 for controlling the blowout temperature and performing blowout mode control in which a blowout port is appropriately selected.
[0013]
When the blower 5 rotates, air selected from the outside air inlet 2 and the inside air inlet 3 is introduced, guided from the intake unit 4 into the storage case 7 such as a blower, and the evaporator arranged in the storage case 7. 6, cool air is generated, and reaches the air conditioning unit 10. A part or all of the cool air is heated by the heater core 8 to become hot air, mixed with non-heated cool air, adjusted to an appropriate temperature, and vented. Outlets selected from the outlet 11, the hot air outlet 12, and the defrost outlet 13 are blown into the passenger compartment from each outlet (not shown).
[0014]
2 and 3, the air conditioning unit 10 is shown. FIG. 2 is a perspective view, and FIG. 3 is a cross-sectional view, which has a heater core and controls the temperature of the blown air and the blow mode. The lower part of the air-conditioning case 15 is opened and serves as a cool air inlet 18, which is fitted to the cool air outlet 17 of the storage case 7 such as a blower.
[0015]
An air mix door 20 and an auxiliary door 21 are provided above the cool air inlet 18, and both doors 20, 21 are connected by a lever 22 so as to be moved in conjunction with each other. If the air mix door 20 and the auxiliary door 21 are at positions as indicated by the solid lines in FIG. 3, the cool air passage 24 is closed and the heating passage 25 is open, so that all of the cool air flows into the heater core 8 and the cool air is When the heating becomes the maximum heating to be warmed, and is rotated as indicated by the two-dot chain line, the cooling air passage 24 is opened, the heating passage 25 is closed, and the cooling air is the maximum cooling air flowing through the cooling air passage 24. When the air mix door 20 and the auxiliary door 21 are at the intermediate position, both the passages 24 and 25 are opened appropriately, and the cool air and the warm air are mixed in the mixing passage 28 in which the heating passage 25 and the cool air passage 24 become one. Thus, the temperature is adjusted.
[0016]
In this embodiment, the heater core 8 is composed of a tube and fins, one of which is provided with an engine cooling water introduction / outflow pipe 27a, 27b, and a heater core insertion hole 30 formed on the right side surface of the air conditioning case 15. Inserted. The inserted heater core 8 is held by upper and lower heater core holding portions 32 and 33, and is arranged just across the heating passage 25, where the cool air is heated to become hot air.
[0017]
Further, in this embodiment, a baffle plate 34 is provided at a portion where the heating passage 21 and the cool air passage 24 become one in order to promote mixing of the cool air and the warm air, and this baffle plate 34 is shown in FIG. A plurality of guide grooves 35 and guide holes 36 are formed in the longitudinal direction, and a plurality of projecting pieces 37 are provided therebetween. These projecting pieces 37 are connected by a horizontal bar 39 extending in the longitudinal direction. I have. As a result, the cold air and the hot air become numerous laminar flows when passing, collide and mix.
[0018]
The baffle plate 34 is attached to the inside of the air-conditioning case 10 by using an insertion piece 42 formed at one end and an arc-shaped holding portion 43 formed at the other end. The air-conditioning case 15 is inserted into the mounting groove 46 formed in the lateral direction from the dividing surface 45, and the holding portion 43 is held by the heater core holding portion 33 below the heater core 8. This baffle plate 34 is attached by inserting one end of the insertion piece 42 into the attachment groove 46 of the left air-conditioning case 10 and inserting one end of the holding portion 43 into the lower heater holding portion 33, and thereafter, as shown in FIG. This is performed by sliding in the lateral direction as indicated by arrow A. Then, by holding the holding portion 43 of the baffle plate 34 in the heater core holding portion 33 below the right air conditioning case 10 and sliding it, the divided surfaces 45 of the left and right air conditioning cases 10 are joined.
[0019]
In order to define the mixing passage 28 and the heating passage 25 connected thereto, the mixing passage 28 has an inner partition wall 50 projecting in the lateral direction. The inner partition wall 50 has a flat cylindrical shape, and has a strong configuration. In the mixing passage 28 formed by the internal partition wall 50 and the air-conditioning case 15, the vent outlet 11 connected to the vent outlet is formed first, and the defrost outlet 13 connected to the defrost outlet is formed further downstream. A warm air outlet 12 connected to the foot outlet is formed at the bottom of the vehicle.
[0020]
A switching door 55 is disposed at the vent outlet 11 and controls opening and closing of the vent outlet 11. That is, when the vent outlet 11 is fully opened, the mixing passage 28 leading to the defrost outlet 13 and the warm air outlet 12 is closed, and when the vent outlet 11 is fully closed, the mixing passage 28 leading to the defrost outlet 13 and the warm air outlet 12 is supplied to the conditioned air. Is washed away. A switching door 57 for switching between the defrost outlet 13 and the hot air outlet 12 is provided, and is appropriately rotated in a defrost mode or a heating mode. The hot air outlet 12 is connected to a wind guide duct 58 (shown in FIG. 1) for guiding the hot air to the feet.
[0021]
The vent outlet 11 and the defrost outlet 13 are long openings in the lateral direction, and the lateral members 59 of the air-conditioning case 15 that define the two outlets only protrude laterally from the left and right side walls of the air-conditioning case 15. , Weak in strength, not only by external force but also by its own weight, it falls down and distorted, making it difficult to fit the air-conditioning case, reducing the area of the mixing passage after assembly, the seat surface of the vent outlet 11 and the defrost outlet 13 Inconveniences such as deterioration of sealing performance due to the deformation occur. As a countermeasure, a metal bar 60 is interposed between the lateral member 59 and the inner partition wall 50. Specifically, as shown in FIG. 5, both heads 60a, 60a of the metal bar 60 are inserted and attached to the concave portions of the dividing surface 45. The transverse member 59, which is weak in strength, is strengthened by the metal rod 60, and the above-mentioned disadvantage is improved.
[0022]
A net 62 is arranged at the defrost outlet 13 to make blown air hitting the windshield of the vehicle inconsistent. As shown in FIGS. 6 and 7, the mesh 62 is configured to be larger than the opening area of the defrost outlet 13, and has a large number of outwardly projecting pieces 63 formed on the outer peripheral edge thereof. The projection 63 is used to temporarily fix the air conditioning case around the defrost outlet 13. When the lining 64 for air sealing is stuck around the defrost outlet 13, the outer periphery of the net 62 is simultaneously adhered to the temporarily fixed net 62 with the adhesive of the lining 64.
[0023]
【The invention's effect】
As described above, according to the first aspect of the present invention, since the baffle plate is mounted with one of the mounting grooves and the other of the baffle plates sandwiched between the heater core holding portions, the baffle plate can be slid and mounted without using screws or the like. According to the second aspect of the present invention, since the baffle plate mounting means may be an insertion piece inserted into the mounting groove and a holding portion sandwiched between the heater core holding portions, the processing is easy.
[0024]
According to the third aspect of the present invention, since a large number of projecting pieces of the baffle plate are connected by the horizontal bar, the strength of the baffle plate itself can be improved. According to the invention of claim 4, since the net is provided at the defrost outlet provided at the end of the mixing passage, the blown air can be made inconsistent, and the net is adhered together with the adhesive of the lining. Have the advantage. Furthermore, according to the invention of claim 5, since the net can be temporarily fixed by the protruding pieces, the attaching operation becomes easy. According to the invention of claim 6, it is possible to reinforce the member of the air conditioning case that defines the mixing passage with the metal rod. And since it is a metal, it can be made fine and the ventilation resistance can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view of an automotive air conditioner according to the present invention.
FIG. 2 is a perspective view of an air conditioning unit.
FIG. 3 is a view as viewed from a division surface formed in a vertical direction of the air conditioning unit.
FIG. 4 is a perspective view showing a state in which a baffle plate is attached to an air conditioning case (left side).
FIG. 5 is a perspective view for explaining a reinforcing metal rod provided on the mixing passage in the air-conditioning case.
FIG. 6 is a perspective view showing a state in which a net is provided at a defrost outlet in the air conditioning case.
FIG. 7 is a plan view of a net.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Automotive air conditioner 4 Intake unit 7 Blower etc. storage case 8 Heater core 10 Air conditioning unit 11 Vent outlet 12 Hot air outlet 13 Defrost outlet 15 Air conditioning case 17 Cold air outlet 18 Cold air inlet 20 Air mix door 21 Auxiliary door 24 Cold air passage 25 Heating passage 28 Mixing passage 33 Lower heater core holding part 34 Baffle plate 37 Protrusion piece 39 Horizontal rod 42 Insertion piece 43 Nipping part 45 Dividing surface 46 Mounting groove 50 Internal partition wall 59 Horizontal member 60 Metal rod 63 Protrusion piece 64 Lining

Claims (6)

A heating door and a cool air passage having a heater core are formed in the air conditioning case, and a mix door for changing a ratio of a cool air amount supplied to the heating passage and the cool air passage is provided. In a vehicle air conditioner in which a baffle plate that promotes mixing of cold air and hot air is provided
The air conditioner for a vehicle according to claim 1, wherein the baffle plate is inserted into a mounting groove formed in the air conditioning case on one side, and is mounted so as to sandwich a heater core holding portion formed in the air conditioning case on the other side. The vehicle air conditioner according to claim 1, wherein the baffle plate includes an insertion piece for inserting the heater core holding part on one side and an insertion piece for inserting the heater core holding part on the other side. The said baffle plate is comprised with the connection of many guide grooves and guide holes, and provided the horizontal bar which connects between many guide pieces which form this guide groove and guide holes, or 3. The vehicle air conditioner according to 2. At the end of the mixing passage that becomes one downstream of the cold air passage and the heating passage, there is an outlet for each mode at the end of the mixing passage, and a net is arranged at one of the defrost outlets of each outlet. 2. The air conditioner for a vehicle according to claim 1, wherein the air conditioner is attached with an adhesive of the lining. 5. The air conditioner for a vehicle according to claim 4, wherein the net has a shape slightly larger than an opening shape of the defrost outlet, and has a plurality of projecting pieces extending outward from an outer peripheral end thereof. 2. The air conditioner according to claim 1, wherein upper and lower members of the heater case defining the mixing passage are supported by metal rods.

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